JP7343469B2 - Skive weight adjustment method and skive weight adjustment system - Google Patents

Description

The present invention provides a skive weight adjustment method for adjusting the weight of a corner of a belt ring which is cut off in a skiving process performed on the belt ring (hereinafter also referred to as skive process weight), and a skive process weight. Regarding skive weight adjustment system to adjust.

In the process of forming a belt molded body such as a wrapped V-belt, for example, as shown in Patent Document 1, a skive process is performed on a belt ring-shaped body having a rectangular cross section that is wound around a pair of pulleys. executed. Skive processing is a process in which a blade (also referred to as a skive cutter or the like) is brought into contact with a corner of a running belt loop between a pair of pulleys to cut the corner of the belt loop.

JP2016-87885A

By the way, in the forming process of the belt formed body, the following preparation process is provided prior to the skiving process.

Specifically, before the skiving process, there are two steps: (1) measuring the weight of the belt hoop, and (2) measuring the weight measurement value and set value (the reference weight of the belt hoop before skiving). (3) determining whether or not it is necessary to adjust the weight of the corner portion to be skived (skive treatment weight) based on a comparison with the set value for the skive treatment; and (3) determining whether adjustment of the skive treatment weight is required. There are three steps: a step of adjusting the skive processing weight when the skive processing is carried out.

Conventionally, all of these three steps have been performed manually by workers, and in this case, as will be described below, there is a problem in that belt manufacturing quality and productivity cannot be achieved at the same time.

For example, in the preparation process for skiving processing, the weight of each of a plurality of belt loops to be skived (for example, 500 belt loops) is measured one by one, and the weight measurement value and the set value are combined. A possible method is to compare the values one by one and determine whether or not the skive treatment weight needs to be adjusted for each belt ring.

According to this method, the measured weight of each of the 500 belt loops is compared with the set value (so-called a complete check), so the belt loops whose skive processing weight should be adjusted are The skiving weight can be reliably detected and adjusted prior to skiving the belt hoop. As a result, deterioration in belt manufacturing quality can be suppressed.

However, if this method is carried out manually by a worker, the worker will, for example, place the belt loop on an electronic scale, read and measure its weight, and check the set value written on the document etc. Operations such as determining whether or not it is necessary to adjust the skive processing weight must be repeated 500 times. That is, if this method is performed manually by a worker, the productivity of the belt cannot be ensured.

On the other hand, considering the productivity of the belt, we focused on the lot in which the material for the part of the belt hoop that is to be skived is produced, and we decided to A method may also be considered in which it is determined whether or not the skive treatment weight needs to be adjusted for only the belt loop. The belt hoop on which the skiving process is performed is a compressed rubber layer provided as an inner rubber layer, an elongated rubber layer provided as an outer rubber layer, and sandwiched between the compressed rubber layer and the elongated rubber layer. and a core wire provided therein. The skiving process is performed as a process of cutting off the corners of the compressed rubber layer in the belt annular body. In addition, the belt annular body consists of a compressed rubber layer on the inner circumferential side, a core wire, and an elongated rubber layer on the outer circumferential side, which are produced by forming a rubber sheet into a cylinder shape by rolling the rubber material. The belt sleeve is formed by laminating the belt sleeves and cutting them into a ring shape. For this reason, the weight of the compressed rubber layer in the belt ring and the rolling lot, which is the lot in which the compressed rubber layer is produced by rolling, which is the part of the belt ring whose corners are removed in the skiving process, are It is estimated that the correlation will be high. Therefore, in consideration of belt productivity, among the plurality of belt loops to be skived (for example, 500 belt loops), the first belt loop in each rolling lot of compressed rubber layer (i.e. It is also conceivable to first measure the weight of only the belt ring-shaped body containing the compressed rubber layer to be skived in each rolling lot of the compressed rubber layer, and to determine whether or not the skiving weight needs to be adjusted.

In this case, for example, when the number of belt loops per lot (that is, the number of belt loops corresponding to each rolled lot of compressed rubber layer) is 100, out of 500 belt loops, The number of belt loops whose weights are measured and whether or not the skive processing weight needs to be adjusted is 5 (=500/100). Therefore, when this method is performed manually by a worker, belt productivity can be ensured compared to a method in which all of a plurality of belt loops are weighed or the like.

However, all of the belt loops in one lot (here, 100 belt loops) have the same weight as the first belt loop in the rolling lot (i.e., the belt loop whose weight is being measured, etc.). However, there are also belt loops whose weight is different from that of the first belt ring. In this case, the skive process is performed on the belt ring-shaped body which should normally be skived after the skive process weight has been adjusted, but the skive process is executed without adjusting the skive process weight (so to speak, the skive process weight is adjusted). There is a risk that the adjustment may be missed), resulting in a decrease in manufacturing quality.

In addition, when a worker judges whether or not to adjust the skive processing weight, due to an error in judgment by the worker, it is determined that the skive processing weight does not need to be adjusted, even though it should be adjusted. There is a possibility. In this case as well, there is a risk that the skive processing weight may not be adjusted properly, resulting in a decrease in manufacturing quality.

Further, when the worker manually adjusts the skive processing weight, the worker adjusts the skive processing weight by, for example, adjusting an adjustment dial provided on the skive adjustment mechanism. In this case, there is a risk that the skive processing weight may not be adjusted appropriately due to an operator's operational error, resulting in a decrease in manufacturing quality.

As described above, all of the three processes of (1) measuring the weight of the belt ring, (2) determining the necessity of adjusting the skive processed weight, and (3) adjusting the skive processed weight can be carried out by the worker. If the process is carried out manually, there is a problem in that it is not possible to achieve both belt manufacturing quality and productivity.

The present invention is intended to solve the above problems, and its purpose is to provide a skive weight adjustment method and skive weight adjustment system that can achieve both belt manufacturing quality and productivity.

(1) In order to solve the above problems, a skive weight adjustment method according to an aspect of the present invention involves winding a belt ring-shaped body having a rectangular cross section perpendicular to the longitudinal direction around a pair of pulleys. a traveling mechanism that runs between a pair of pulleys; a skive processing mechanism that performs a skive process that cuts off the corner by bringing a blade into contact with a corner of the belt loop running between the pair of pulleys; A skive weight adjustment for adjusting the skive treatment weight by a belt molded body forming apparatus comprising a skive adjustment mechanism configured to be able to adjust the skive treatment weight, which is the weight of the corner portion to be removed in the skive treatment. A method comprising: a weight measuring step of measuring the weight of a belt hoop before performing the skiving process; a weight measurement value obtained in the weight measuring step; and a reference for the belt hoop before performing the skiving process. A determination step of comparing a setting value regarding the weight, determining whether or not adjustment of the skive processing weight is necessary based on the comparison result, and transmitting an adjustment signal when it is determined that adjustment of the skive processing weight is necessary. and controlling the skive adjustment mechanism so that the relative position of the belt loop running between the pair of pulleys and the blade portion is changed based on the adjustment signal before executing the skive process. and an adjusting step of adjusting the skive processing weight.

According to this configuration, the forming apparatus automatically measures the weight of the belt ring and determines whether or not the skive processing weight needs to be adjusted. Therefore, it is possible to adopt a method of measuring the weight of each of multiple belt loops one by one and determining whether or not the skive processing weight needs to be adjusted, without requiring any work by workers, thereby ensuring productivity. At the same time, it is possible to reliably detect the belt hoop whose skiving weight should be adjusted. Further, since the molding apparatus automatically determines whether or not the skive processing weight needs to be adjusted, errors in judgment by the operator do not occur. Furthermore, since the skive processing weight adjustment operation is automatically executed by the molding apparatus, there is no possibility of errors in adjustment operations by the operator. Therefore, according to this configuration, it is possible to provide a skive weight adjustment method that can achieve both belt manufacturing quality and productivity.

(2) Preferably, the skive adjustment mechanism pushes the belt ring toward the blade by coming into contact with a surface opposite to the corner of the belt ring that is running between the pair of pulleys. In the adjusting step, the relative position of the belt ring-shaped body running between the pair of pulleys and the blade portion is adjusted by changing the pushing amount of the pushing roll based on the adjustment signal. is changed.

According to this configuration, by using the push roll, the relative position between the belt ring and the blade part can be changed while the belt ring is running between the pair of pulleys. Therefore, it is possible to adjust the skive processing weight with a simple configuration.

(3) More preferably, the push roll is configured to be movable in a linear direction by drive control of a drive source that can change the push amount of the push roll based on the adjustment signal.

According to this configuration, the push roll does not involve complicated movements, but is configured to be movable along a straight line by drive control of the drive source, making it easier to adjust the skive processing weight. It is possible to realize this by using the configuration.

(4) In order to solve the above-mentioned problem, a skive weight adjustment method according to an aspect of the present invention involves winding a belt ring-shaped body having a rectangular cross section perpendicular to the longitudinal direction around a pair of pulleys. a traveling mechanism that runs between a pair of pulleys; a skive processing mechanism that performs a skive process that cuts off the corner by bringing a blade into contact with a corner of the belt loop running between the pair of pulleys; A skive weight adjustment for adjusting the skive treatment weight by a belt molded body forming apparatus comprising a skive adjustment mechanism configured to be able to adjust the skive treatment weight, which is the weight of the corner portion to be removed in the skive treatment. A method comprising: a weight measuring step of measuring the weight of a belt hoop before performing the skiving process; a weight measurement value obtained in the weight measuring step; and a reference for the belt hoop before performing the skiving process. is compared with a first setting value regarding the weight, and based on the comparison result, it is determined whether or not the skive processing weight needs to be adjusted. When it is determined that the skive processing weight needs to be adjusted, the operator a determination step of transmitting an adjustment signal to the skive adjustment mechanism; an adjustment step of accepting an adjustment operation for the skive adjustment mechanism by an operator based on the adjustment signal before executing the skive process; and execution of the skive process. Later, a weight remeasuring step of remeasuring the weight of the belt hoop after the skiving process is performed, and the weight measurement value obtained in the weight remeasuring step and the weight of the belt hoop after the skiving process are performed. Comparing with a second set value regarding the reference weight, determining whether readjustment of the skive processing weight is necessary based on the comparison result, and determining that readjustment of the skive processing weight is necessary; The method includes a re-discrimination step of transmitting a re-adjustment signal to a worker, and a re-adjustment step of accepting a re-adjustment operation of the skive adjustment mechanism by the worker based on the re-adjustment signal.

According to this configuration, the forming apparatus automatically measures the weight of the belt ring and determines whether or not the skive processing weight needs to be adjusted. Therefore, it is possible to adopt a method of measuring the weight of each of multiple belt loops one by one and determining whether or not the skive processing weight needs to be adjusted, without requiring any work by workers, thereby ensuring productivity. At the same time, it is possible to reliably detect the belt hoop whose skiving weight should be adjusted. Furthermore, since the determination of whether or not the skive processing weight needs to be adjusted is automatically executed, errors in judgment by the operator do not occur. Furthermore, although the adjustment of the skive processing weight is performed by the worker, if a skive processing weight adjustment error occurs, a readjustment signal will be sent to the worker and the skive processing weight will be readjusted. Accepted. That is, even if an operator makes an error in adjusting the skive processing weight, the operator can subsequently readjust the skive processing weight to an appropriate skive processing weight. Therefore, according to this configuration, it is possible to provide a skive weight adjustment method that can achieve both belt manufacturing quality and productivity.

(5) Preferably, the skive adjustment mechanism pushes the belt ring toward the blade by coming into contact with a surface opposite to the corner of the belt ring that is running between the pair of pulleys. The adjustment operation and the readjustment operation are respectively performed by changing the amount of pushing of the push roll to adjust the distance between the belt ring-shaped body running between the pair of pulleys and the blade portion. This is an operation that changes the relative position.

According to this configuration, by using the push roll, the operator can change the relative position of the belt loop and the blade portion while the belt loop is running between the pair of pulleys. Therefore, it is possible to easily adjust the skive processing weight.

(6) Preferably, in the weight measuring step, a pair of gripping portions capable of gripping the belt loop between the pair of pulleys arranged apart from each other in the vertical direction are attached to the belt loop wrapped around the pair of pulleys. a step of gripping the body in a state in which the lower pulley of the pair of pulleys is released from the belt; a step of performing a movement operation of moving the pair of gripping parts upward; and a step of a weight measurement part measuring the weight of the belt ring-like body gripped by the pair of gripping parts after the movement operation has stopped. and has.

According to this configuration, the shape of the belt ring is adjusted by wrapping the belt ring around the pair of pulleys, and the pair of gripping parts holding the belt ring with the adjusted shape are moved upward. Moving. Therefore, the belt loop that is moving upward comes into contact with the pair of pulleys, compared to the case where the pair of grips move upward while gripping the belt loop that has not yet been wrapped around the pair of pulleys. This can be avoided more easily. As a result, it is possible to provide a skive weight adjustment method that can more accurately measure the weight of the belt hoop.

(7) In order to solve the above problem, a skive weight adjustment system according to an aspect of the present invention is provided by winding a belt ring-shaped body having a rectangular cross section perpendicular to the longitudinal direction around a pair of pulleys. a traveling mechanism that runs between a pair of pulleys; a skive processing mechanism that performs a skive process that cuts off the corner by bringing a blade into contact with a corner of the belt loop running between the pair of pulleys; A skive weight adjustment system that adjusts the skive treatment weight in a belt molding apparatus comprising: a skive adjustment mechanism configured to be able to adjust the skive treatment weight, which is the weight of the corner portion to be removed in the skive treatment; a weight measurement unit that measures the weight of the belt ring before the skiving process; and a weight measurement value obtained by the weight measurement unit that serves as a reference for the belt ring before the skiving process. a determining unit that compares the weight with a set value, determines whether or not the skive processing weight needs to be adjusted based on the comparison result, and sends an adjustment signal when it is determined that the skive processing weight needs to be adjusted; Before executing the skive process, the skive adjustment mechanism is controlled based on the adjustment signal so that the relative position of the belt ring-shaped body running between the pair of pulleys and the blade part is changed, and an adjustment control section that adjusts the skive processing weight.

According to this configuration, the forming apparatus automatically measures the weight of the belt ring and determines whether or not the skive processing weight needs to be adjusted. Therefore, it is possible to adopt a method of measuring the weight of each of multiple belt loops one by one and determining whether or not the skive processing weight needs to be adjusted, without requiring any work by workers, thereby ensuring productivity. At the same time, it is possible to reliably detect the belt hoop whose skiving weight should be adjusted. Furthermore, since the determination of whether or not the skive processing weight needs to be adjusted is automatically executed, errors in judgment by the operator do not occur. Furthermore, since the skive processing weight adjustment operation is automatically executed, there is no possibility of errors in adjustment operations by the operator. Therefore, according to this configuration, it is possible to provide a skive weight adjustment system that can achieve both belt manufacturing quality and productivity.

(8) In order to solve the above problem, a skive weight adjustment system according to an aspect of the present invention is provided by winding a belt ring-shaped body having a rectangular cross section perpendicular to the longitudinal direction around a pair of pulleys. a traveling mechanism that runs between a pair of pulleys; a skive processing mechanism that performs a skive process that cuts off the corner by bringing a blade into contact with a corner of the belt loop running between the pair of pulleys; A skive weight adjustment system that adjusts the skive treatment weight in a belt molding apparatus comprising: a skive adjustment mechanism configured to be able to adjust the skive treatment weight, which is the weight of the corner portion to be removed in the skive treatment; a weight measurement unit that measures the weight of the belt ring before the skiving process; and a weight measurement value obtained by the weight measurement unit that serves as a reference for the belt ring before the skiving process. and a first set value regarding the weight, and based on the comparison result, it is determined whether or not the skive processing weight needs to be adjusted. When it is determined that the skive processing weight needs to be adjusted, a message is sent to the worker. a discriminating unit that transmits an adjustment signal; and an adjustment receiving unit that receives an adjustment operation for the skive adjustment mechanism, which is an adjustment operation by a worker based on the adjustment signal, before executing the skive process, and The unit re-measures the weight of the belt loop after the skiving process, and the determining unit measures the weight measurement value again obtained by the weight measuring unit and the skive process. and a second set value regarding the reference weight of the belt ring body after execution of the process, and based on the comparison result, it is determined whether readjustment of the skive processed weight is necessary, and readjustment of the skive processed weight is performed. When it is determined that adjustment is required, a readjustment signal is sent to the worker, and the adjustment receiving unit receives a readjustment operation for the skive adjustment mechanism by the worker based on the readjustment signal. accept.

According to this configuration, the forming apparatus automatically measures the weight of the belt ring and determines whether or not the skive processing weight needs to be adjusted. Therefore, it is possible to adopt a method of measuring the weight of each of multiple belt loops one by one and determining whether or not the skive processing weight needs to be adjusted, without requiring any work by workers, thereby ensuring productivity. At the same time, it is possible to reliably detect the belt hoop whose skiving weight should be adjusted. Furthermore, since the determination of whether or not the skive processing weight needs to be adjusted is automatically executed, errors in judgment by the operator do not occur. Furthermore, although the adjustment of the skive processing weight is performed by the worker, if a skive processing weight adjustment error occurs, a readjustment signal will be sent to the worker and the skive processing weight will be readjusted. Accepted. That is, even if an operator makes an error in adjusting the skive processing weight, the operator can subsequently readjust the skive processing weight to an appropriate skive processing weight. Therefore, according to this configuration, it is possible to provide a skive weight adjustment system that can achieve both belt manufacturing quality and productivity.

(9) Preferably, the weight measurement unit includes a pair of gripping portions capable of gripping the belt loop between the pair of pulleys spaced apart in the vertical direction, and a pair of gripping portions capable of vertically moving the pair of gripping portions. a moving part, the pair of gripping parts grip the belt ring-shaped body that has been wrapped around the pair of pulleys in a state in which the belt loop is released from the belt loop around the lower pulley of the pair of pulleys; The moving section executes a moving operation of moving the pair of gripping sections upward while gripping the belt loop, and the weight measurement section moves the belt hoop-shaped object to the gripping section by the pair of gripping sections after the moving operation is stopped. Measure the weight of the belt hoop in the state in which it is attached.

According to this configuration, the shape of the belt ring is adjusted by wrapping the belt ring around the pair of pulleys, and the pair of gripping parts holding the belt ring with the adjusted shape are moved upward. Moving. Therefore, the belt loop that is moving upward comes into contact with the pair of pulleys, compared to the case where the pair of grips move upward while gripping the belt loop that has not yet been wrapped around the pair of pulleys. This can be avoided more easily. As a result, it is possible to provide a skive weight adjustment system that can more accurately measure the weight of the belt hoop.

According to the present invention, it is possible to provide a skive weight adjustment method that can achieve both belt manufacturing quality and productivity, and to provide a skive weight adjustment system that can achieve both belt manufacturing quality and productivity.

1(A) is an external view, and FIG. 1(B) is a sectional view taken along line IB-IB in FIG. 1(A). FIG. FIG. 2A is a diagram for explaining the shape of a belt molded body, and FIG. 2A is an external view, and FIG. 2B is a cross-sectional view taken along the line IIB-IIB in FIG. 2A. FIG. 2 is a schematic diagram showing the positional relationship of each component included in the belt molded body forming apparatus according to the first embodiment, as viewed from above. 4 is a schematic diagram showing the configuration of the suspension mechanism shown in FIG. 3. FIG. FIG. 4 is a diagram viewed from the direction of arrow V, and is a diagram for explaining the general shape of the presser portion. FIG. 4 is a diagram for explaining the operation of the suspension mechanism, in which (A) shows the gripping portion advancing toward the hanging stand, and (B) shows the state immediately before the belt loop is gripped by the gripping portion. The figure shown in FIG. 1C is a diagram showing a state immediately before the gripping portion gripping the belt ring-shaped body is retracted from the hanging stand. It is a schematic diagram showing the configuration of the spanning mechanism, and is a view of the spanning mechanism viewed from the front. 8 is a diagram schematically showing a cross section taken along line VIII-VIII in FIG. 7. FIG. FIG. 8 is a view of the spanning mechanism shown in FIG. 7 viewed from above, and is a diagram for explaining the turning operation and linear motion of the spanning mechanism. FIG. 3 is a diagram for explaining the state when the belt loop gripped by the gripping part is delivered to the spanning main body part, (A) is a diagram showing the state before delivery, and (B) is a diagram showing the state after delivery. It is a figure showing a state. FIG. 2 is a schematic diagram showing a schematic configuration of a traveling mechanism. It is a figure which shows the shape of an upper pulley, Comprising: (A) is a top view, (B) is a side view. FIG. 3 is a diagram illustrating the process in which the belt loop is stretched from the spanning body to the upper pulley, and (A) is a diagram showing how the spanning body on which the belt loop is hung approaches the upper pulley; , (B) is a diagram showing a state in which the protruding member of the spanning main body is in contact with the upper pulley. FIG. 3 is a diagram showing the process in which the belt loop is stretched from the spanning main body to the upper pulley, in which (A) shows the state in which the support member is in contact with the belt loop, and (B) shows the state in which the belt loop is in contact with the belt loop. It is a figure which shows the state where it spans over the upper pulley. FIG. 3 is a diagram illustrating the process in which the belt ring-shaped body that has been stretched around the upper pulley is wound around both the upper pulley and the lower pulley, and (A) shows the state immediately after the belt ring-shaped body has been stretched around the upper pulley. (B) is a diagram showing a state in which the lower pulley is lowered and the belt loop is wound around both pulleys. FIG. 2 is a diagram illustrating a schematic configuration of a skive processing section and a skive adjustment section, together with a belt ring-shaped body that has been skived by the skive processing section. FIG. 2 is a diagram showing a schematic configuration of a skive processing section and a skive adjustment section. FIG. 17 is a view seen from the direction of arrow XVII in FIG. 16, and is a diagram for explaining the operations of the skive processing section and the skive adjustment section. (A) A block diagram of an operation panel, (B) a block diagram of a control panel. FIG. 2 is a schematic diagram showing a schematic configuration of a canvas supply mechanism. It is a schematic diagram for demonstrating the schematic structure of a covering process part, Comprising: It is a front view shown together with the belt ring-shaped object of the state covered by the covering process part. 22 is a schematic diagram for explaining the schematic configuration of the covering processing section, and is a sectional view taken along the line XX-XX in FIG. 21. FIG. FIG. 22 is a schematic diagram for explaining the general configuration of the covering processing section, and is a view taken from the direction of arrow XXI in FIG. 21, and is a schematic diagram of the catcher section. FIG. 3 is a schematic diagram showing a schematic configuration of a removal mechanism. 25 is a diagram showing a state in which the arm portion has advanced to an advanced position in the removal mechanism shown in FIG. 24. FIG. FIG. 25 is a diagram showing a state in which the arm part that receives the belt molded body from the upper pulley has moved to a standby position in the removal mechanism shown in FIG. 24, and a diagram showing a state in which the belt molded body is hung on a belt molded body hanger; It is. FIG. 2 is a diagram for explaining the operation of the belt molded body forming apparatus, and is a flowchart showing a belt molded body forming process. It is a flowchart which shows the preparation process of skive processing. It is a flowchart which shows weight measurement processing. FIG. 3 is a diagram showing a state immediately before the forming apparatus starts forming a belt formed body. It is a figure which shows the state just before the belt ring-shaped body is spanned over the span body part by the holding part. It is a figure which shows the state just before the belt ring-shaped body is spanned from the spanning main body part to the traveling mechanism. FIG. 3 is a diagram showing a state in which the belt loop body has been spanned from the span body to the traveling mechanism, and then the span body has moved to a standby position. FIG. 3 is a diagram showing the forming apparatus during skiving and covering processing, and shows a state in which the belt molded body to be processed next is held by the spanning main body. FIG. 6 is a diagram showing a state in which the belt molded body that has undergone skiving and covering processing is removed from the traveling mechanism by a removal mechanism and hung on a belt molded body hanging stand. (A) to (C) are schematic diagrams for explaining the operation of the load detection mechanism in weight measurement processing. FIG. 6 is a diagram showing evaluation results regarding the first embodiment and aspects related to Comparative Examples 1 and 2. It is a flowchart which shows the preparation process of the skive process based on 2nd Embodiment. It is a flowchart which shows a confirmation process. FIG. 7 is a diagram showing evaluation results regarding the second embodiment and aspects related to Comparative Examples 1 and 2.

[First embodiment]
Below, a forming apparatus 1 for forming a belt molded body 105 including a skive adjustment section 10 (see FIG. 3) and a method for forming the belt formed body 105 (see FIG. 2) according to an example of an embodiment of the present invention will be described. According to the molding device 1 according to the present embodiment, a predetermined process can be performed on an endless belt body (belt loop body 100) in which a compressed rubber layer 101, a core wire 102, and an elongated rubber layer 103 are laminated. As a result, a belt molded body 105 (see FIG. 2(B)) whose outer peripheral surface is covered with canvas can be formed. This belt molded body 105 is formed as a material constituting a wrapped V-belt (not shown), and by performing a vulcanization treatment on the belt molded body 105, a wrapped V-belt having elasticity is formed. It is formed. Note that a long wrapped V-belt can also be formed by cutting each of the belt molded bodies 105 formed in plurality and joining their end faces together.

[Configuration of belt loop]
FIG. 1 is a diagram for explaining the shape of a belt ring-shaped body 100, in which (A) is an external view and (B) is a cross-sectional view taken along line IB-IB in FIG. 1(A).

The belt loop body 100 has a rectangular cross section perpendicular to its longitudinal direction. As shown in FIG. 1, the belt annular body 100 includes a compressed rubber layer 101, an elongated rubber layer 103, and a core wire 102 sandwiched between these rubber layers 101 and 103. The belt hoop 100 is formed into an endless loop having a predetermined circumference (for example, 60 to 105 inches). Further, the width w of the belt ring body 100 is, for example, about 13 mm (millimeter), and the thickness t of the belt ring body 100 is, for example, about 8 mm.

The compressed rubber layer 101 is a loop-shaped rubber layer having a circumferential length of a predetermined length, and the cross-sectional shape perpendicular to the longitudinal direction is formed into a rectangular shape as shown in FIG. 1(B). The compressed rubber layer 101 is made of, for example, natural rubber (NR), styrene-butadiene rubber (SBR), chloroprene rubber (CR), or the like. The compressed rubber layer 101 is provided as a rubber layer on the inner peripheral side of the belt annular body 100.

The elongated rubber layer 103 is a loop-shaped rubber layer having a circumferential length that is approximately the same as that of the compressed rubber layer 101, and the elongated rubber layer 103 is a loop-shaped rubber layer having a circumferential length that is approximately the same as that of the compressed rubber layer 101. It is superimposed on the . The width of the elongated rubber layer 103 is the same as that of the compressed rubber layer 101, while the thickness of the elongated rubber layer 103 is formed to be thinner than the compressed rubber layer 101. Like the compressed rubber layer 101, the elongated rubber layer 103 is made of, for example, natural rubber (NR), styrene-butadiene rubber (SBR), chloroprene rubber (CR), or the like. The elongated rubber layer 103 is provided as a rubber layer on the outer peripheral side of the belt ring-shaped body 100.

The core wire 102 is held between the compressed rubber layer 101 and the elongated rubber layer 103. The core wire 102 is provided over the entire circumference of each rubber layer 101, 103. The core wire 102 is provided so as to extend along the circumferential direction of the rubber layers 101 and 103 (specifically, in a spiral shape with respect to the circumferential direction). Thereby, the core wire 102 functions as a reinforcing member that prevents the belt loop body 100 from breaking. The core wires 102 are arranged at equal intervals along the width direction of each rubber layer 101, 103. As the core wire 102, for example, a filamentous material such as polyester fiber, nylon fiber, or aramid fiber is used. In addition, although the cross-sectional view of FIG. 1(B) illustrates the belt ring-shaped body 100 in which the number of arrays of the core wires 102 is eight, the density of the array of the core wires 102 is not limited to this. Further, although not shown, an adhesive rubber layer may be provided on the surface of the compressed rubber layer 101 on the core wire 102 side and on the surface of the elongated rubber layer 103 on the core wire 102 side.

The belt loop body 100 configured as described above is in an unvulcanized state, so its surface portion is sticky and has low elasticity, making it a relatively difficult member to handle. be.

[Structure of belt molded body]
FIG. 2 is a diagram for explaining the shape of the belt molded body 105, in which (A) is an external view and (B) is a cross-sectional view taken along the line IIB-IIB in FIG. 2(A).

As shown in FIG. 2(B), the belt molded body 105 has a substantially trapezoidal cross section perpendicular to its longitudinal direction. The belt molded body 105 is formed by subjecting the belt ring-shaped body 100 described above to a predetermined process. Specifically, the belt molded body 105 is subjected to a skive process (process for cutting off the corner portion 101a of the compressed rubber layer 101) and a covering process (skive process) to be described in detail later on the belt annular body 100. It is formed by wrapping the covers 106, 107 (canvas) around the belt ring-shaped body 100.

The compressed rubber layer 101 in the belt molded body 105 is formed so that its cross-sectional shape is approximately trapezoidal. Such a trapezoidal shape (V-shape) is formed by cutting off the corner portion 101a (see FIG. 1(B)) of the compressed rubber layer 101 in the belt annular body 100 by skiving.

The lower cover 106 and the upper cover 107 are provided as canvas that covers the outer periphery of the belt ring-shaped body 100 that has been skived. As shown in FIG. 2(B), the lower cover 106 is provided to cover the outer peripheral surfaces of the rubber layers 101 and 103, and the upper cover 107 is provided to cover the outer peripheral surfaces of the lower cover 106 while covering the rubber layers 101 and 103. It is placed to cover the surface.

[Overall configuration of molding equipment]
FIG. 3 is a schematic diagram showing the positional relationship of each component included in the forming apparatus 1 for the belt formed body 105 according to the present embodiment, and is a view of the forming apparatus 1 viewed from above.

As shown in FIG. 3, the forming apparatus 1 includes a belt loop supply mechanism 2, a traveling mechanism 5, a skive processing section 6, a skive adjustment section 10, a canvas supply mechanism 7, a covering processing section 8, a removal mechanism 9, etc. We are prepared.

In the forming apparatus 1 , one of the plurality of pre-formed belt loops 100 is set on the traveling mechanism 5 by the belt loop supply mechanism 2 . Next, in the forming apparatus 1, the belt annular body 100 run by the running mechanism 5 is sequentially subjected to skiving processing by the skiving processing section 6 and covering processing by the covering processing section 8, thereby forming the belt. A body 105 is formed. The belt molded body 105 formed in this manner is removed from the traveling mechanism 5 by the removal mechanism 9. Then, in the forming apparatus 1, the belt ring-like body supply mechanism 2 sequentially performs skiving and covering processes on each belt ring-like body 100 set on the traveling mechanism 5, so that belt molded bodies 105 are sequentially formed. , are sequentially removed by the removal mechanism 9. That is, according to the forming apparatus 1 according to the present embodiment, a plurality of belt formed bodies 105 can be manufactured fully automatically.

[Configuration of each component constituting the molding device]
[Configuration of belt loop supply mechanism]
The belt loop supply mechanism 2 includes a suspension mechanism 3 and a spanning mechanism 4. The suspension mechanism 3 is a mechanism for sequentially delivering the plurality of belt ring bodies 100 one by one to the spanning mechanism 4. Moreover, the spanning mechanism 4 is a mechanism for sequentially spanning the belt loop body 100 received from the suspension mechanism 3 to the traveling mechanism 5.

FIG. 4 is a schematic diagram showing the configuration of the suspension mechanism 3. As shown in FIGS. 3 and 4, the suspension mechanism 3 includes a belt hoop mounting stand 31, a belt hoop transport belt 32, and a gripping mechanism 33.

The belt hoop hanging stand 31 is a part formed in an elongated platform shape extending in a predetermined direction (in the case of FIG. 3, the left-right direction). is multiplied. Note that these plurality of belt loops 100 are hung so as to straddle both of a pair of belt loop transportation belts 32, which will be described later, by a worker or by automatic conveyance from a previous process.

The belt hoop conveyor belt 32 is provided on each of the widthwise ends of the belt hoop hanger 31, and transports the plurality of belt hoops 100 hung on the belt hoop hanger 31 in a predetermined direction (in the case of FIG. 3, transport in the direction of arrow A). Specifically, the belt ring-like body conveying belt 32 intermittently conveys the belt ring-like body 100 in the direction of arrow A by a predetermined distance. Thereby, the belt loops 100 that are sequentially picked up by the gripping mechanism 33 can be sent out one after another to a position where the belt loops 100 can be picked up by the gripping mechanism 33.

Furthermore, the distance between the pair of belt loop-shaped body conveying belts 32 is determined by the degree of bending of the upper portion of the belt loop-shaped body 100 in a state where it is hung on the suspension mechanism 3. The degree of curvature is set to be substantially smaller than the degree of curvature of the upper portion of the belt ring-shaped body 100. In other words, the upper portion of the belt loop 100 suspended on the suspension mechanism 3 is less curved and flat than the upper portion of the belt loop 100 suspended on the protruding member 43. It's getting close. In other words, the suspension mechanism 3 also has the function of bending the belt loop 100 in advance so that the upper portion of the belt loop 100 has a small bend. This makes it easier to span the belt loop body 100 over the protrusion member 43, and it is possible to suppress the outflow of defective products due to molding troubles.

Note that it is preferable to use a timing belt as the ring-shaped body conveying belt 32 in order to ensure feeding accuracy. Further, as the belt ring-like body conveying belt 32, in order to prevent the belt ring-like body 100 from sticking, it is preferable to use urethane resin or the like.

The gripping mechanism 33 (see FIG. 4) is for picking up the belt ring-shaped body 100 hung on the hanging stand 31 and delivering it to the spanning mechanism 4. The gripping mechanism 33 includes a gripping part 34 and a holding part 38.

The grip part 34 has an upper plate 35 and a lower plate 36, as shown in FIG. The upper plate 35 and the lower plate 36 are provided as plate-shaped portions extending along a horizontal plane. A pair of upper claw portions 35a (only one upper claw portion 35a is shown in FIG. 4) are formed on the upper plate 35 and are provided in parallel with each other. On the other hand, the lower plate 36 is formed with a pair of lower claws 36a (only one lower claw 36a is shown in FIG. 4) that are provided in parallel with each other. Each claw portion 35a, 36a is formed to extend toward the hanging stand 31 and the conveyor belt 32 side.

The lower plate 36 is movable in the vertical direction with respect to the upper plate 35 by an air cylinder (not shown). As a result, the gripping part 34 can hold the belt ring-shaped body 100 between the upper claw part 35a and the lower claw part 36a, which will be described in detail later.

The grip portion 34 is configured to be slidable along an LM guide (not shown) that extends in parallel with the hanging stand 31 . The gripping part 34 can advance along the LM guide toward the hanging stand 31 (direction Bf in FIG. 3) and retreat toward the side away from the hanging stand 31 (direction Bb in FIG. 3) by a linear actuator (not shown). It is possible.

FIG. 5 is a view of FIG. 4 viewed from the direction of arrow V, and is a view for explaining the general shape of the presser portion 38. As shown in FIG. The presser portion 38 is arranged above the hanging stand 31 and can be raised and lowered in the vertical direction using an air cylinder (not shown) or the like. The presser part 38 is positioned one position before the belt loop 100 located at the most distal end side (on the right side in FIGS. 3 and 4) of the hanger 31 (that is, the belt loop 100 to be picked up next by the gripping mechanism 33). This is for holding down the side belt loop body 100 from above. As a result, when a belt loop 100 is picked up by the gripping section 34, the belt loop 100 next to it may accidentally get caught and fall from the hanging stand 31, or two belt loops 100 may be grabbed at once. You can prevent it from being put away. That is, by providing the presser portion 38, even if a plurality of belt loops 100 are arranged on the hanger 31 without any gaps between them, the belt loops 100 can be reliably picked up one by one.

As shown in FIG. 5, the holding portion 38 has a pair of acute-angled tip portions 38a that protrude downward at an acute angle. In the holding portion 38, each acute-angled tip portion 38a presses a portion of the belt loop body 100 that is placed on one of the conveyor belts 32 and a portion that is placed on the other conveyor belt 32, respectively. As a result, the belt loop 100 is not pressed by the planar portion but by the dotted portions, so that it is possible to prevent the belt loop from sticking to the presser portion 38.

[Pickup operation of the belt loop by the gripping section]
6A and 6B are diagrams for explaining the operation of the suspension mechanism 3, in which (A) is a diagram showing how the grip part 34 advances toward the hanging stand 31 side, and (B) is a diagram showing how the grip part 34 is used to hold the belt loop. 100 is a diagram showing a state immediately before the belt loop body 100 is gripped, and FIG.

The suspension mechanism 3 operates as follows with reference to FIG. Specifically, in the suspension mechanism 3, the grip portion 34 moves in the advancing direction Bf (see FIG. 6(A)) and stops near the hanging stand 31 (see FIG. 6(B)). Note that when this operation is performed, the presser section 38 presses the belt loop 100 that is one place before the belt loop 100 to be picked up next (the next belt after the belt loop 100 to be picked up next). The ring-shaped body 100) is in a pressed state.

Next, the lower plate 36 of the grip portion 34 is raised. As a result, the belt loop body 100 located at the most distal end side (on the right side in FIG. 6) of the hanging stand 31 is held between the upper claw portion 35a and the lower claw portion 36a (see FIG. 6(C)). . After that, in the gripping mechanism 33, the gripping part 34 is retracted toward the retraction direction Bb, and the presser part 38 is raised. After the presser part 38 is raised, the conveyor belt 32 is driven, and the belt loop 100 to be gripped by the gripper 34 is conveyed to the tip of the hanger 31 (not shown). . Thereafter, the holding portion 38 presses down the belt loop 100 that is one place closer to the belt loop 100 to be picked up next, and returns to the state shown in FIG. 6(A).

FIG. 7 is a schematic diagram showing the configuration of the spanning mechanism 4, and is a view of the spanning mechanism 4 viewed from the front. The spanning mechanism 4 includes a spanning body section 40, an arm section 21, a flat plate section 22, a turning mechanism 23, and a linear motion mechanism 24.

Further, FIG. 8 is a longitudinal cross-sectional view showing a schematic configuration of the spanning body section 40. As shown in FIG. The spanning body section 40 has a base section 41 , a support member 42 , a protruding member 43 , a shaft section 46 , and a coil spring 47 .

The base portion 41 is provided as a base to which the support member 42 is attached. The base portion 41 is fixed to the arm portion 21 by bolting or the like.

The support member 42 is a member formed in the shape of a slightly thin rectangular parallelepiped box in the front-rear direction, and is a member for supporting the protrusion member 43. The support member 42 is fixed to the upper side of the base portion 41. A circular opening hole 42a is formed in the front side of the support member 42 in a plan view. Further, the peripheral edge portion of the opening hole 42a on the front side of the support member 42 is provided as a front end surface 42b. Further, the depth d ₄₂ of the support member 42 is the sum of the height h ₄₃ of the protruding member 43, which will be described later, and the thickness d ₅₃ of the collar 53 of the upper pulley 51 (see FIG. 12, which will be described later). It is set as follows.

The protruding member 43 has a disk portion 44 and a peripheral wall portion 45, and is a member in which these are integrally formed. The disk portion 44 is a portion formed into a disk shape when viewed from above. The peripheral wall portion 45 is a wall portion formed to extend rearward from the outer peripheral edge of the disc portion 44 . As a result, the upper portion of the protruding member 43 is formed with an upper side surface 43a having an arcuate cross-sectional shape that bulges upward. The rear portion of the protrusion member 43 is inserted into the opening hole 42a of the support member 42 so that the disc portion 44 faces the front side.

As will be described later, in the forming device 1, the upper portion of the inner circumferential surface of the belt ring-shaped body 100 is supported by the upper side surface 43a of the protruding member 43. As a result, the degree of deformation of the belt ring 100 can be reduced compared to the case where the belt ring 100 is supported by, for example, dotted or linear parts. Furthermore, in the forming apparatus 1, the belt loop 100 can be hung from the spanning mechanism 4 to the upper pulley 51 without substantially changing the shape of the belt loop 100 (especially the shape of the upper part of the belt loop 100). can be handed over. That is, according to the molding apparatus 1, it is possible to suppress the outflow of defective products due to problems during molding.

Note that the material used for the protruding member 43 is preferably a material that has a small coefficient of friction with the belt annular body 100 in order to improve the sliding with the belt annular body 100 hung on the protruding member 43, and specifically, For example, nylon resin can be mentioned. However, the material used for the protruding member 43 is not limited to this, and may be a hard resin other than nylon resin (ultra-high molecular weight polyethylene resin, etc.).

As shown in FIG. 7, a pair of notches 44a are formed in the upper part of the disc part 44, extending downward from the upper end of the disc part 44. As shown in FIG. The pair of notches 44a are formed to be aligned in the left-right direction.

The shaft portion 46 is a rod-shaped member extending in the front-rear direction, and most of the shaft portion 46 is located within the internal space S formed by the support member 42 and the protruding member 43. Specifically, the front end of the shaft portion 46 is fixed to the center portion of the disc portion 44 by a bolt 48, while the rear end portion thereof is fixed to the center portion of the rear surface of the support member 42 while passing through the center portion. It is exposed to the outside through a cylindrical bush 42c. A bolt 49a is fixed to the rear end surface of the shaft portion 46 via a washer 49b. In the state shown in FIG. 8, the outer peripheral edge of the washer 49b is in contact with the inner peripheral edge of the bush 42c.

The coil spring 47 is provided as a biasing portion for biasing the protrusion member 43 forward with respect to the support member 42 . As shown in FIG. 8, the coil spring 47 is provided so as to surround the shaft portion 46, and its front end abuts against the disc portion 44 of the protruding member 43, while its rear end abuts against the bush 42c.

Further, the spanning body section 40 has a guide pin 25 and a guide pin bush 26. The guide pin 25 is a pin-shaped member fixed to the rear surface of the support member 42, and is provided so as to extend forward in the internal space S of the spanning body 40. On the other hand, the guide pin bush 26 is a part formed integrally with the protruding member 43, and is formed in a cylindrical shape extending rearward from the disk portion 44 of the protruding member 43. The guide pin 25 is inserted into the guide pin bush 26 . The guide pin bush 26 can be displaced in the front-rear direction along the guide pin 25 by sliding its inner peripheral surface against the outer peripheral surface of the guide pin 25.

Referring to FIG. 7, the arm portion 21 is an arm-shaped portion formed in an L-shape, and includes a vertical portion 21a extending linearly in the vertical direction and a horizontal portion 21b extending linearly in the horizontal direction. These are integrally formed. A spanning main body 40 is fixed to one end of the arm portion 21 (the upper portion of the vertical portion 21a), while the other end (the upper portion of the horizontal portion 21b opposite to the side where the vertical portion 21a is provided) A rotating mechanism 23 is provided in the side portion). Thereby, the arm portion 21 connects the spanning main body portion 40 and the turning mechanism 23.

The flat plate portion 22 is a member formed in a plate shape elongated in the vertical direction. The flat plate portion 22 is provided so as to extend downward with its upper end portion fixed to a portion of the horizontal portion 21b of the arm portion 21 near the vertically downward portion of the spanning body portion 40.

FIG. 9 is a view of the spanning mechanism 4 shown in FIG. 7 viewed from above, and is a diagram for explaining the pivoting operation and linear motion of the spanning mechanism 4. In the spanning mechanism 4, the turning mechanism 23 performs a turning operation of the spanning body 40. The turning mechanism 23 includes, for example, a turning actuator (not shown), and turns the spanning main body 40 within a range of 90 degrees. Specifically, the turning mechanism 23 turns the spanning main body 40 between position P1 and position P2. Position P1 is a position (receiving position) where the spanning main body 40 receives the belt loop 100 from the gripping part 34, and position P2 is a position (receiving position) where the spanning main body 40 and the traveling mechanism 5 are spaced apart in the front-rear direction ( (standby position).

Further, in the spanning mechanism 4, the linear motion mechanism 24 performs a linear motion of the spanning body section 40. The linear motion mechanism 24 includes, for example, a linear motion base 24a and a linear motion actuator (not shown), and when the linear motion actuator is driven, the spanning main body 40 is moved in the front-rear direction (back side or front side). Move (direct motion). Specifically, the linear motion mechanism 24 moves between the above-mentioned standby position P2 and a spanning position P3, which is a position in which the spanning main body 40 is moved toward the traveling mechanism 5 side and the belt loop body 100 is bridged over the traveling mechanism 5. The spanning body section 40 is moved linearly between.

[Transfer operation of the belt loop from the gripping section to the spanning body]
FIG. 10 is a diagram for explaining the state when the belt loop body 100 gripped by the gripping part 34 is delivered to the spanning body part 40, and FIG. 10(A) shows the state before delivery. 10(B) are diagrams showing the state after delivery. In addition, in FIG. 10, regarding the grip part 34, only a pair of upper claw parts 35a and a pair of lower claw parts 36a are illustrated.

When the belt loop body 100 is transferred from the grip portion 34 to the spanning main body portion 40, the grip portion 34, which is gripping the belt loop body 100, is retracted toward the retraction direction Bb side. On the other hand, the spanning main body 40 is rotated by the rotation mechanism 23 and is located at the receiving position P1. In this state, the grip portion 34 and the spanning body portion 40 face each other (see FIG. 31 described later for details).

After the gripping portion 34 and the spanning body portion 40 face each other as described above, the gripping portion 34 advances toward the advancing direction Bf side. Then, the belt loop body 100 held between the upper claw part 35a and the lower claw part 36a of the grip part 34 will be located above the protruding member 43 in the spanning body part 40 (FIG. 10). See A). Thereafter, as the pair of lower claws 36a descends, the belt loop 100 supported by the lower claws 36a falls and becomes caught on the upper side surface 43a of the protruding member 43 (see FIG. 10). See B). Note that at this time, each lower claw portion 36a enters each notch portion 44a of the protrusion member 43, so interference between the lower claw portion 36a and the protrusion member 43 can be avoided.

[Configuration of traveling mechanism]
FIG. 11 is a schematic diagram showing a schematic configuration of the traveling mechanism 5. As shown in FIG. As shown in FIG. 11, the traveling mechanism 5 includes an upper pulley 51, a lower pulley 55, and an air cylinder (not shown) for raising and lowering the lower pulley 55. The upper pulley 51 and the lower pulley 55 are arranged apart from each other in the vertical up-down direction. The upper pulley 51 is arranged above the lower pulley 55. A rotating shaft of an electric motor (not shown) is connected to the center of the upper pulley 51 . On the other hand, the lower pulley 55 is provided rotatably about the central axis of the lower pulley 55.

FIG. 12 is a diagram showing the shape of the upper pulley 51, with FIG. 12(A) being a plan view and FIG. 12(B) being a side view. The upper pulley 51 has a pulley main body portion 52 and a pair of collar portions 53, which are integrally provided.

The pulley main body 52 is a disc-shaped portion having a predetermined thickness, and is provided as a portion around which the belt ring-shaped body 100 is wound. The thickness of the pulley body 52 in the axial direction is approximately the same as the width w (see FIG. 1(B)) of the belt annular body 100. Furthermore, a plurality of grooves 52a are formed on the outer peripheral surface of the pulley main body 52, extending along the axial direction of the pulley main body 52. A large number of grooves 52a are formed along the circumferential direction of the outer peripheral surface of the pulley main body 52. This prevents the belt annular body 100 from slipping with respect to the upper pulley 51 when the belt annular body 100 runs (when the upper pulley 51 is driven to rotate).

Each collar portion 53 is a disk-shaped portion provided at both ends of the upper pulley 51 in the axial direction. The collar portion 53 is provided coaxially with the pulley main body portion 52. The outer diameter of the collar portion 53 is larger than the outer diameter of the pulley main body portion 52. This can prevent the belt loop 100 from separating from the upper pulley 51 in the state where the belt loop 100 is wound around the pulley main body 52 . Further, the outer diameter of the flange portion 53 is the same as the outer diameter of the protrusion member 43, or is slightly smaller (for example, about 1 mm). The height h of each collar portion 53 is set lower than the thickness t of the belt ring-shaped body 100 (see FIG. 1(B)). Specifically, the height h is set to be approximately half the thickness of the compressed rubber layer 101 (see FIG. 1) of the belt annular body 100. A radially outer portion of each collar portion 53 is formed with a tapered surface that gradually becomes lower from the outside toward the inside in the thickness direction of the collar portion 53 . Thereby, the belt loop body 100 can be smoothly spanned from the span body 40 to the upper pulley 51.

Referring to FIG. 11, the lower pulley 55 has a pulley main body portion 56 and a collar portion 57, which are integrally provided. The pulley main body portion 56 is a portion formed in a cylindrical shape, and is provided as a portion around which the belt loop body 100 is wound. The lower pulley 55 is movable up and down.

The outer diameter of the pulley main body 56 of the lower pulley 55 is configured to be equal to the outer diameter of the pulley main body 52 of the upper pulley 51. The collar portion 57 is provided on the back side of the pulley body portion 56 (on the side opposite to the spanning body portion 40 in the axial direction of the pulley body portion 56). The collar portion 57 is provided coaxially with the pulley main body portion 56. The outer diameter of the collar portion 57 is larger than the outer diameter of the pulley main body portion 52. Thereby, it is possible to prevent the belt loop body 100 from coming off to the back side of the lower pulley 55 while the belt ring body 100 is traveling by the traveling mechanism 5.

In the traveling mechanism 5, after the belt ring body 100 is wound around the pair of pulleys 51 and 55 as will be described in detail later, the belt ring body 100 is rotated by an electric motor connected to the upper pulley 51. is circulated between the pair of pulleys 51 and 55. Then, the belt loop body 100 running between the pair of pulleys 51 and 55 in this manner is subjected to a skiving process and a covering process, which will be described in detail later.

In this way, in the molding apparatus 1 according to the present embodiment, one running mechanism 5 having a pair of pulleys 51 and 55 serves as a mechanism for running the belt ring-shaped body 100 when skiving processing is performed and a mechanism for running belt ring-shaped body 100 when skiving processing is performed. It functions both as a mechanism for running the belt hoop 100 when the belt loop is being carried out. Therefore, there is no need to provide a separate traveling mechanism for each process, and the configuration of the molding apparatus 1 can be simplified. In addition, in the forming apparatus 1, the belt ring body 100 can be run by two pulleys 51 and 55, which simplifies the forming apparatus 1 compared to the case where the belt ring body 100 is run by three or more pulleys. And size reduction can be achieved.

[Transferring operation of the belt loop from the main body to the upper pulley]
13 and 14 are diagrams showing a process in which the belt loop body 100 is spanned from the span body section 40 to the upper pulley 51. Specifically, FIG. 13(A) is a diagram showing how the spanning main body 40 on which the belt loop body 100 is hung approaches the upper pulley 51, and FIG. 13(B) shows the spanning main body 14(A) is a diagram showing a state in which the supporting member 42 is in contact with the belt ring-shaped body 100, and FIG. 5 is a diagram showing a state in which the ring-shaped body 100 is spanned over an upper pulley 51. FIG.

The belt ring-like body 100 hung on the protruding member 43 of the spanning main body 40 is wrapped around the traveling mechanism 5 in the following manner. Specifically, the spanning main body 40 that has received the belt loop body 100 at the receiving position P1 (see FIG. 9) is rotated by the rotating mechanism 23 to the standby position P2. As a result, the spanning main body portion 40 and the upper pulley 51 are placed in an opposed state (see FIG. 32, which will be described later).

In this state, by driving the linear motion mechanism 24, the spanning main body 40 gradually advances toward the upper pulley 51 (in the direction of the white arrow in FIG. The plate portion 44 comes into contact with the collar portion 53 on the front side of the upper pulley 51 (see FIG. 13(B)). Since the central axis of the protruding member 43 is set to be coaxial with the central axis of the upper pulley 51, in the state shown in FIG. are in a state where they are exactly overlapped (in other words, they are in close contact). By bringing the protruding member 43, on which the belt loop 100 is hung on the upper surface 43a, into close contact with the upper pulley 51 in this way, the belt loop 100 can be reliably spanned over the upper pulley 51. Note that the central axis of the protruding member 43 may be set slightly above the central axis of the upper pulley 51 (for example, about 0.5 mm).

Further, when the linear motion mechanism 24 is driven, the protrusion member 43 is maintained at the same position, while the support member 42 moves forward against the biasing force of the coil spring 47. As a result, the front end surface 42b (pressing surface) of the support member 42 comes into contact with the belt ring-shaped body 100 hung on the protruding member 43 (see FIG. 14(A)). Then, the support member 42 advances further to a position where its front end surface 42b slightly exceeds the surface of the protruding member 43 that is in contact with the flange 53, specifically, the rear surface of the flange 53 on the near side. Move to a position where it is flush with the As a result, the belt loop body 100 climbs over the front side flange 53 and fits between the pair of flange portions 53 (see FIG. 14(B)), and becomes wound around the upper pulley 51. In this state, as shown in FIG. 15(A), the lower pulley 55 is in a raised state, so the belt loop body 100 is wound only around the upper pulley 51.

In this way, in the molding device 1, one member (supporting member 42) has the function of supporting the protruding member 43, the function of pressing the belt loop 100 hung on the protruding member 43 toward the upper pulley 51, It is possible to accomplish both. This allows the device to be made compact. Further, in the forming device 1, when the belt ring body 100 is stretched over the upper pulley 51, it is pressed by the planar portion (the front end surface 42b as a pressing surface), so that deformation of the belt ring body 100 is prevented. Can be done. Furthermore, in the forming apparatus 1, all of the portions of the belt loop body 100 that are hung on the protruding member 43 can be moved from the protruding member 43 to the upper pulley 51. Thereby, the belt loop body 100 can be reliably spanned over the upper pulley 51.

FIG. 15 is a diagram illustrating a process in which the belt loop body 100, which is stretched around the upper pulley 51, is wound around both the upper pulley 51 and the lower pulley 55. Specifically, FIG. 15(A) is a diagram showing the state immediately after the belt loop body 100 is spanned over the upper pulley 51, and FIG. 15(B) is a diagram showing the state immediately after the belt ring-like body 100 is stretched over the upper pulley 51. 5 is a diagram showing a state in which a belt ring-shaped body 100 is wound around 51 and 55. FIG.

When the belt loop body 100 is placed over the upper pulley 51, the lower pulley 55 is lowered by the air cylinder. As a result, the belt loop 100 is wound around the lower surface of the pulley main body 56 of the lower pulley 55 (see FIG. 15(B)). Further, since the belt ring body 100 is pulled in the vertical direction by the upper pulley 51 and the lower pulley 55, an appropriate tension is applied to the belt ring body 100.

Note that, as described above, when the lower pulley 55 descends, the spanning main body 40 remains in the vicinity of the traveling mechanism 5. That is, when the lower pulley 55 is lowered, the belt loop 100 that is hung on the upper pulley 51 is covered by the flat plate portion 22 (see FIG. 7) so that it does not protrude toward the front side. Thereby, the belt loop body 100 can be reliably wound around the lower pulley 55. In the traveling mechanism 5, after the belt ring body 100 is wound around the pair of pulleys 51 and 55 as shown in FIG. It runs so as to circulate between the pulleys 51, 51 of the. In this embodiment, the upper pulley 51 is rotationally driven in the clockwise direction when the traveling mechanism 5 is viewed from the front side. As a result, the right side portion of the belt loop body 100 set on the traveling mechanism 5 travels downward, while the left side portion travels upward.

[Configuration of skive processing section and skive adjustment section]
16 and 17 are diagrams showing the schematic configurations of the skive processing section (also referred to as skive processing mechanism) 6 and the skive adjustment section 10. FIG. 16 is also a diagram showing a state in which the belt ring-shaped body 100 is subjected to skiving processing by the skiving processing section 6. 18 is a view seen from the direction of arrow XVII in FIG. 16, and is a diagram for explaining the operations of the skive processing section 6 and the skive adjustment section 10.

Further, the skive adjustment section 10 functions as a skive weight adjustment system that adjusts the skive processing weight (described later).

The skive processing section 6 is a processing section that executes skive processing. Skive processing is performed by bringing a blade (for example, skive cutter 62) into contact with a corner 101a (see FIGS. 1 and 18) of a belt loop 100 that is running between a pair of pulleys 51 and 55 by a running mechanism 5. In this process, the corner portion 101a of the belt loop body 100 is cut off.

The skive processing section 6 can make the cross-sectional shape of the belt ring-shaped body 100 substantially trapezoidal by executing the skive processing. Specifically, the skive processing section 6 removes the corner 101a (see FIGS. 1 and 18) of the inner circumference side of the belt ring-like body 100 running between the pair of pulleys 51 and 55. , the cross-sectional shape of the belt loop body 100 is made approximately trapezoidal.

The skive processing section 6 has a skive processing main body section 61 (see FIGS. 16 and 18).

As shown in FIG. 18, the skive processing main body 61 has a pair of skive cutters 62. As shown in FIG. Each skive cutter 62 is formed into a substantially cylindrical shape with a central axis extending in the vertical direction. The skive cutter 62 can be displaced between a standby position P4 and a skive position P5 shown in FIG. 18 by a displacement mechanism (not shown). For example, while the skive process is not being performed, the skive cutter 62 is located at the standby position P4. On the other hand, when the skive process is performed, the skive cutter 62 moves from the standby position P4 to the skive position P5. At this time, the outer peripheral edge of the skive cutter 62 comes into contact with the corner 101a of the belt ring-shaped body 100. When the traveling mechanism 5 is driven and the belt ring body 100 is traveling, the outer peripheral edge of the skive cutter 62 comes into contact with the corner 101a of the belt ring body 100, thereby cutting off the corner 101a. Note that, as described later, the skive adjustment mechanism 65 is configured to be able to adjust the skive position P5.

As shown in FIG. 16, the skive cutter 62 is a part of the belt ring-shaped body 100 that circulates between the pair of pulleys 51 and 55 and runs from the top to the bottom (the right part in FIGS. 16 and 18). ). As a result, the shavings cut by the skive cutter 62 fall downward due to gravity. The shavings that have fallen downward in this way are discharged by a swarf discharge duct (not shown) provided slightly below the portion of the belt loop 100 where the skive cutter 62 cuts out the belt ring.

In this way, the skive process can be performed without the shavings cut immediately before intervening in the part to be cut by the skive process, so it is possible to suppress the outflow of defective products due to molding troubles.

The skive adjustment section 10 has a skive adjustment mechanism 65. The skive adjustment mechanism 65 is configured to be able to adjust the weight (hereinafter also referred to as skive processing weight) of the corner portion 101a (see FIG. 1(B)) of the belt ring-shaped body 100 that is removed in the skive processing.

As shown in FIG. 18, the skive adjustment mechanism 65 includes a back pushing roll 66 and a pair of guide rolls 67.

The back pushing roll 66 can push the belt ring 100 toward the skive cutter 62 by coming into contact with the surface opposite to the corner 101a of the belt ring 100 running between the pair of pulleys 51 and 55. It is a roll member.

In the skive adjustment mechanism 65, the relative position between the skive cutter 62 and the belt ring-shaped body 100 running between the pair of pulleys 51 and 55 is adjusted by changing the pushing amount (specifically, the pushing position) of the rear pushing roll 66. The position (specifically, the relative position of the belt hoop 100 with respect to the skive cutter 62) is changed, thereby adjusting the skive processing weight. As shown in FIG. 17, the pushing amount of the back pushing roll 66 is determined by using a speed reducer (for example, a timing belt) 64 with respect to a drive source (for example, a servo motor 68) that can change the pushing amount of the back pushing roll 66. This is realized by controlling the servo cylinder 69 (see FIG. 17) connected through the servo cylinder 69 (see FIG. 17). Specifically, the servo motor 68 changes the push amount of the back push roll 66 by controlling the operation of the servo cylinder 69 based on an adjustment signal (described later) for adjusting the skive processing weight.

In this embodiment, when the loop-shaped belt ring body 100 runs between the pair of pulleys 51 and 55, the back surface of the belt ring body 100 becomes the outer peripheral surface. The belt ring 100 is pushed into the skive cutter 62 by contacting the outer peripheral surface of the belt ring 100 running between the pulleys 51 and 55 of the belt ring 100 . The back surface of the belt annular body 100 is, for example, the surface on the elongated rubber layer 103 side (the upper surface of the belt annular body 100 in FIG. 1(B)) among the four surfaces of the belt annular body 100 having a substantially rectangular cross section.

On the other hand, if the back surface of the belt loop 100 becomes the inner circumferential surface when the belt loop 100 runs between the pair of pulleys 51 and 55, the back surface pushing roll 66 moves between the pair of pulleys 51 and 55 during the skiving process. By coming into contact with the outer peripheral surface of the belt ring 100 running between the pulleys 51 and 55, the belt ring 100 is pushed toward the skive cutter 62.

The back pushing roll 66 is rotatably provided around a central axis extending parallel to the central axis of each pulley 51, 55 of the traveling mechanism 5. As a result, the back pushing roll 66 comes into contact with the back surface of the belt loop 100 running between the pair of pulleys 51 and 55 without making uneven contact, so that the belt loop 100 is properly moved toward the skive cutter 62 side. can be pushed into.

The pair of guide rolls 67 are arranged along the width direction (vertical direction in FIG. 18) of the belt loop 100 so that the interval is slightly wider than the width w of the belt loop 100 (see FIG. 1). There is.

The skive adjustment mechanism 65 operates between the standby position P6 and the skive adjustment position P7 shown in FIG. 18 by using, for example, a linear actuator (for example, a servo cylinder 69 (see FIG. 17)) in a straight line direction connecting the positions P6 and P7. can be displaced along. As the skive adjustment mechanism 65 is displaced between the standby position P6 and the skive adjustment position P7, the back surface push roll 66 moves along the linear direction.

For example, while skive processing is not being performed, the skive adjustment mechanism 65 (back surface push roll 66, etc.) is located at the standby position P6 (see FIG. 18). On the other hand, when the skive process is performed, the skive adjustment mechanism 65 (back surface push roll 66, etc.) moves from the standby position P6 to the skive adjustment position P7. At this time, the back surface (portion on the elongated rubber layer 103 side) of the belt loop body 100 running between the pair of pulleys 51 and 55 is pushed toward the skive cutter 62 side by the back pushing roll 66, so that the belt loop body 100 The corner 101a of the skive cutter 62 comes into contact with the outer peripheral edge of the skive cutter 62.

Further, as described above, when the skive adjustment mechanism 65 moves from the standby position P6 to the skive adjustment position P7, the belt ring body 100 is guided between the pair of skive cutters 62 by the pair of guide rolls 67. Thereby, the belt hoop 100 can be reliably passed between the pair of skive cutters 62.

Now, as shown in FIG. 17, the skive adjustment section 10 further includes a load detection mechanism 130.

The load detection mechanism 130 is provided to measure the weight Wb1 of the belt ring-shaped body 100.

As shown in FIG. 17, the load detection mechanism 130 includes a hand 131, a load cell 132, a pair of arms 133, a linear actuator (for example, a solenoid actuator 135), and a drive control section 136. There is. In the preparation process for the skive process, which will be described later, the load detection mechanism 130 operates to automatically measure the weight Wb1 of the belt ring-shaped body 100 before the skive process is performed. Note that the detailed operation of the load detection mechanism 130 will be described later.

The load cell 132 is a load detection section that can detect a load (static load).

The pair of arms 133 are configured to be able to grip the belt loop body 100 between the pair of pulleys 51 and 55. Specifically, a chuck 134 that functions as a gripping portion capable of gripping the belt loop body 100 between the pair of pulleys 51 and 55 is provided at the distal end portions of the pair of arms 133, respectively. The chuck 134 is composed of a movable chuck 134A and a fixed chuck 134B. In the load detection mechanism 130 according to this embodiment, the movable chuck 134A is provided on the inside, and the fixed chuck 134B is provided on the outside.

The hand (robot hand) 131 is a moving unit that can move a pair of arms 133 in the vertical direction via a load cell 132. As will be described later, when the pair of arms 133 move in the vertical direction, the belt loop body 100 gripped by the pair of arms 133 moves in the vertical direction.

A solenoid actuator (also referred to as an electromagnetic solenoid, etc.) 135 performs an opening/closing operation (specifically, a gripping operation and a releasing operation) of the chuck 134. The solenoid actuator 135 opens and closes the chuck 134 (specifically, the movable chuck 134A) based on a signal from the drive control unit 136. Note that the drive source for opening and closing the chuck 134 is not limited to the solenoid actuator 135, but may be a hydraulic cylinder, an electric motor, or the like.

Further, as shown in FIG. 17, the skive adjustment section 10 further includes an operation panel 120. The operation panel 120 is configured using, for example, a computer including a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), etc., or a PLC (Programmable Logic Controller).

FIG. 19(A) is a block diagram of the operation panel 120. As shown in FIG. 19(A), the operation panel 120 includes a calculating section 121 and a determining section 122.

The calculation unit 121 is a processing unit that measures (in detail, calculates) the weight Wb of the belt ring-shaped body 100 based on the load detection result transmitted from the load cell 132. In this embodiment, the load detection mechanism 130 and the calculation section 121 constitute a weight measurement section that measures the weight of the belt ring-shaped body 100. Note that the calculation unit 121 is also referred to as an arithmetic control unit or the like.

In the calculation unit 121, the weight Wa of the pair of arms 133 is set in advance, and a formula for calculating the weight of the belt ring-shaped body 100 is set in advance. The weight calculation formula is a formula (Wb= Wab-Wa). The calculation unit 121 calculates the weight (static load) Wb of the belt annular body 100 by substituting the load detection result Wab by the load cell 132 into the weight calculation formula (Wb=Wab−Wa).

In addition, in this embodiment, although the calculation part 121 measures the weight Wb of the belt ring-shaped body 100 using the load detection mechanism 130 as a weight measurement part, it is not limited to this. For example, the load detection mechanism 130 itself may measure the weight Wb of the belt loop body 100 as a weight measurement section. In this case, for example, the load (so-called tared weight) obtained by subtracting the weight Wa of the pair of arms 133 in advance may be directly measured as the weight Wb of the belt loop body 100.

The determining unit 122 is a processing unit that executes a determining process to determine whether or not adjustment of skive processing weight is necessary. Specifically, the determination unit 122 compares the weight measurement value (measurement value of the weight of the belt ring 100) Wb obtained by the calculation unit 121 with a predetermined setting value (details will be described later). Based on the comparison result, it is determined whether or not the skive processing weight needs to be adjusted.

The determining unit 122 also has a function of transmitting an electrical signal to other processing units within the operation panel 80 or other processing units outside the operation panel 80. For example, when determining that the skive processing weight needs to be adjusted, the determining unit 122 sends an adjustment signal (also referred to as an adjustment command) for adjusting the skive processing weight to the adjustment control unit 111 of the control panel 110 (described later). send a message to The adjustment signal includes the adjustment amount of the skive processing weight in the skive adjustment section 65.

Then, in the skive adjustment section 10, the skive processing weight is adjusted by adjustment control based on the adjustment signal.

Specifically, as shown in FIG. 17, the skive adjustment section 10 further includes a control panel 110. A control panel 110 is provided to control the operation of the skive adjustment mechanism 65. The control panel 110 is configured using, for example, a computer including a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), etc., or a PLC (Programmable Logic Controller).

FIG. 19(B) is a block diagram of the control panel 110. As shown in FIG. 19(B), the control panel 110 includes an adjustment control section 111.

The adjustment control unit 111 is a processing unit that controls the operation of the skive adjustment mechanism 65 (specifically, the adjustment operation of the skive processing weight). The adjustment control unit 111 automatically adjusts the skive processing weight based on the adjustment signal (see FIG. 17) transmitted from the determination unit 122 of the operation panel 120.

Note that although the operation panel 120 (FIG. 19(A)) and the control panel 110 (FIG. 19(B)) are provided separately here, the operation panel 120 and the control panel 110 are provided separately. may be provided integrally.

[Configuration of canvas supply mechanism]
FIG. 20 is a schematic diagram showing a schematic configuration of the canvas supply mechanism 7. As shown in FIG. The canvas supply mechanism 7 includes a lower cover supply mechanism 71 and an upper cover supply mechanism 75.

The lower cover supply mechanism 71 is a mechanism for supplying the lower cover 106 to the belt loop 100 (belt loop 100 after skiving processing) that runs between the pair of pulleys 51 and 55 by the traveling mechanism 5. be. The lower cover supply mechanism 71 includes a lower cover feed-out pulley 72 around which the elongated lower cover 106 is wound, a plurality of crown rolls 73, a roller guide 74, and a lower cover tip gripping portion 74a. . In the lower cover supply mechanism 71, the lower cover delivery pulley 72 is driven to rotate, whereby the lower cover 106 is delivered to the covering processing section 8 side via the plurality of crown rolls 73 and roller guides 74, and the corresponding cover ring is delivered. It is wound around the outer periphery of the belt hoop 100 by the processing section 8 .

The upper cover supply mechanism 75 supplies the upper cover 107 to the belt loop 100 (the belt loop 100 with the lower cover 106 wrapped around it) that runs between the pair of pulleys 51 and 55 by the traveling mechanism 5. This is the mechanism. The upper cover supply mechanism 75 includes an upper cover feed-out pulley 76 around which the elongated upper cover 107 is wound, a plurality of crown rolls 77, a roller guide 78, and an upper cover tip gripping portion 78a. . In the upper cover supply mechanism 75, the upper cover delivery pulley 76 is driven to rotate, whereby the upper cover 107 is delivered to the covering processing section 8 side via the plurality of crown rolls 77 and roller guides 78, and the upper cover 107 is delivered to the covering processing unit 8 side. The processing unit 8 further wraps the lower cover 106, which has been wrapped around the outer periphery of the belt loop 100, around the outer periphery.

The canvas supply mechanism 7 further includes a cover gripping portion displacement mechanism 79. The cover gripping portion displacement mechanism 79 displaces the positions of the lower cover tip gripping portion 74a and the upper cover tip gripping portion 78a relative to each other, thereby displacing the cover (lower cover and top cover) can be switched. The cover gripping portion displacement mechanism 79 has, for example, an air cylinder (not shown), and by moving each cover tip gripping portion 74a, 78a and each roller guide 74, 78 in the direction of arrow C in FIG. The cover to be wrapped around the belt hoop 100 is switched.

[Configuration of covering processing section]
21 to 23 are schematic diagrams for explaining the general configuration of the covering processing section 8. FIG. Specifically, FIG. 21 is a front view of the covering processing unit 8, FIG. 22 is a sectional view taken along line XX-XX in FIG. 21, and FIG. 23 is a view taken from the direction of arrow XXI in FIG. This is a schematic diagram of a catcher section 82. Note that, although an example will be described below in which the lower cover 106 is wrapped around the outer peripheral surface of the belt ring-shaped body 100 by the covering processing unit 8, according to the covering processing unit 8 of the present embodiment, the lower cover 106 is wrapped around the outer peripheral surface of the belt ring-shaped body 100. It is also possible to wrap the upper cover 107 further outside the lower cover 106 that is wrapped around the outer circumferential surface.

The covering processing section 8 is for performing a covering processing in which the lower cover 106 fed out from each cover supply mechanism 71, 75 is wrapped around a belt ring-shaped body 100 running between a pair of pulleys 51, 55. It is. The covering processing section 8 includes a pressing roll 81, a catcher section 82, and a pair of bottom side bending disks 88.

The pressing roll 81 is for pressing the lower cover 106 against the belt loop 100 that is run by the running mechanism 5. The pressing roll 81 presses the lower cover 106 against the back surface of the belt loop 100 by moving in the direction of arrow D shown in FIG.

The catcher section 82 includes a shaping roll 83, four side-side bending rolls 84, and a pair of back rollers 85. In the catcher section 82, each component constituting the catcher section 82 cooperates to wrap the lower cover 106 around the outer peripheral surface of the belt ring-shaped body 100.

The shaping roll 83 is a member in which a flange-like collar portion 83b is formed at each end of a cylindrical portion 83a. The shaping roll 83 pushes the widthwise both sides of the lower cover 106 pressed against the back surface of the belt loop 100 by the pressing roll 81 to the sides of the belt loop 100 (both widthwise end surfaces of the belt loop 100). Fold it to the shape and add the shape.

The four side-side bending rolls 84 press the portion of the lower cover 106 that is bent toward the side surface of the belt ring-shaped body 100 by the shaping roll 83 against the side surface of the belt ring-shaped body 100, and also adjust the width of the lower cover 106. This is for bending the outer part in the direction to the bottom surface of the belt ring-shaped body 100 (the part on the compressed rubber layer 101 side).

The four side-side folding rolls 84 include a pair of upper folding rolls 84a and a pair of lower folding rolls 84b. Each pair of folding rolls 84a, 84b are arranged at intervals along the vertical direction. The pair of upper folding rolls 84a are arranged along the width direction of the belt loop 100 with an interval that allows the belt loop 100 to fit between them. Similarly, the pair of lower folding rolls 84b are also arranged along the width direction of the belt ring-shaped body 100 with an interval that allows the belt ring-shaped body 100 to fit between them.

The pair of back rollers 85, 85 are arranged vertically at intervals. As shown in FIG. 23, the upper back roller 85 is provided between the pair of upper folding rolls 84a. On the other hand, the lower back roller 85 is provided between the pair of lower folding rolls 84b.

A pair of bottom-side bending disks 88 , 88 is used to press the portion of the lower cover 106 that is bent toward the bottom side of the belt ring-like body 100 by the side-side bending roll 84 against the bottom face of the belt ring-like body 100 . It is something. The bottom side bending disks 88 are arranged at intervals along the vertical direction. The upper bottom-side folding disk 88 is provided at a height position corresponding to the pair of upper folding rolls 84a, while the lower bottom-side folding disk 88 corresponds to the pair of lower folding rolls 84b. It is located at a height.

[Operation of covering processing section]
In the covering processing section 8, each component constituting the covering processing section 8 operates as follows, so that the lower cover 106 and the upper cover 107 are attached to the belt ring-shaped body 100 which has been subjected to the skive processing. The wires are wrapped around each other in turn.

In the state before the covering process is performed by the covering process unit 8, the pressing roll 81, the catcher unit 82, and the bottom side bending disc 88 are at the standby position P8, respectively, with reference to FIGS. 21 and 22. It is waiting at P10 and P12. Then, when the covering process is performed, the lower cover tip gripping part 74a that grips the tip of the lower cover 106 is moved to near the upper end of the upper pulley 51 by the cover gripping part displacement mechanism 79. As a result, the tip of the lower cover 106 comes into close contact with the belt ring-shaped body 100. On the other hand, after that, or in parallel, the pressing roll 81, the catcher part 82, and the bottom side bending disk 88 are moved from the standby positions P8, P10, P12 to the covering processing positions P9, P11, P13 by a displacement mechanism (not shown). Move up to. As a result, the tip of the lower cover 106 in close contact with the belt loop 100 is pressed by the pressing roll 81. Thereafter, the lower cover tip gripping section 74a releases its grip on the lower cover 106 and retreats to the rear.

In the above state, the upper pulley 51 is rotationally driven by the electric motor, so that the tip of the lower cover 106 is sequentially sent out downward. Then, the tip of the lower cover 106 is first shaped by a shaping roll 83 so that the cross-sectional shape has a substantially U-shape, and then travels further downward, and then the side bending roll 84, The belt is wound around the outer peripheral surface of the belt hoop 100 by the back roller 85 and the bottom side bending disk 88 . In this way, since the lower cover 106 is pressed against the belt loop 100 traveling downward, the lower cover 106 is wrapped around the belt loop 100 in a state extending downward due to its own weight. The same applies to the upper cover 107. This makes it possible to suppress the outflow of defective products due to molding problems. Note that when the side bending rolls 84 press the widthwise end portions of the lower cover 106 against the side surfaces of the belt loop 100, the widthwise central portion of the lower cover 106 is pressed by the back rollers 85. , the curling wrinkles of the lower cover 106 can be effectively suppressed.

Immediately before the lower cover 106 is wrapped around the entire outer peripheral surface of the belt loop body 100, the upper pulley 51 decelerates and temporarily stops. Next, after the lower cover 106 is gripped by the lower cover tip gripping portion 74a, a portion closer to the belt loop body 100 than the gripped portion is cut with scissors (not shown). Thereafter, the upper pulley 51 is rotated again to wrap the remaining lower cover 106 around the belt loop 100, thereby completing the wrapping of the lower cover 106 around the belt loop 100.

Next, the covering processing unit 8 wraps the upper cover 107. Specifically, first, the position of the lower cover tip gripping part 74a and the position of the upper cover tip gripping part 78a are switched by the cover gripping part displacement mechanism 79, and then the position of the top cover tip of the upper cover 107 is switched. The upper cover tip gripping portion 78a is moved to near the upper end of the upper pulley 51 by the cover gripping portion displacement mechanism 79. As a result, the tip of the upper cover 107 comes into close contact with the lower cover 106 wrapped around the belt loop 100. On the other hand, after that, or in parallel with that, the pressing roll 81 and the catcher section 82, which were once retracted to the standby positions P8 and P10 after the wrapping of the lower cover 106 is completed, move again to the covering processing positions P9 and P11. As a result, the tip of the upper cover 107 that is in close contact with the lower cover 106 wrapped around the belt loop 100 is pressed by the pressing roll 81. Thereafter, the upper cover tip gripping section 78a releases its grip on the upper cover 107 and retreats to the rear.

Thereafter, the upper cover 107 is wrapped around the belt hoop 100 in the same manner as the lower cover 106 described above. As a result, the belt molded body 105 having the shape shown in FIG. 2 is completed.

In this manner, the forming apparatus 1 can automatically and continuously wrap a plurality of canvases (the lower cover 106 and the upper cover 107) around the belt loop body 100. This eliminates the need for manual work when wrapping the plurality of covers 106, 107, thereby suppressing the outflow of defective products due to molding troubles. Further, according to the molding device 1 according to the present embodiment, there is no need to provide a traveling mechanism corresponding to each cover in order to wrap the plurality of covers around the belt loop, so the device can be simplified.

[Configuration of removal mechanism]
FIG. 24 is a schematic diagram showing a schematic configuration of the removal mechanism 9. As shown in FIG. The removal mechanism 9 is for removing the belt ring-shaped body 100 (that is, the belt molded body 105) that has been subjected to the covering treatment from the traveling mechanism 5, and stores the belt ring-shaped body 105. The removal mechanism 9 includes a removal mechanism main body 91, a belt molded body hanging stand 98, and a belt molded body conveying belt 99.

The removal mechanism main body part 91 has a rail part 92, a base part 93, an arm part 94, and a pair of arm claw parts 95.

The rail portion 92 is a rail-shaped portion extending in the left-right direction. The base portion 93 is disposed on the rail portion 92 and is capable of linear motion along the rail portion 92 (advancing to the left in FIG. 24 and retracting to the right). The base portion 93 performs linear motion along the rail portion 92 by, for example, an air cylinder (not shown).

The arm portion 94 is an arm-shaped portion formed in a substantially L-shape when viewed from above. The proximal end side of the arm portion 94 is attached to the base portion 93 so as to be pivotable relative to the base portion 93. The arm portion 94 performs a pivoting motion with respect to the base portion 93 by, for example, a pivot actuator (not shown). The arm portion 94 can be displaced between a standby position P16 shown in FIG. 24 and an advanced position P15 toward the upper pulley 51 by the linear movement of the base portion 93 and its own turning movement.

The pair of arm claw parts 95 are parts provided on the distal end side of the arm part 94, and are constituted by two pin-shaped parts extending from the distal end part of the arm part 94. The pair of arm claw portions 95 are provided so as to extend in parallel with each other at intervals in the horizontal direction.

The belt molded body hanging stand 98 is a portion formed in an elongated platform shape extending in the left-right direction, and a plurality of belt formed bodies 105 are hung along the longitudinal direction of the belt molded body hanging stand 98 .

The belt molded body conveying belts 99 are provided at both ends in the width direction of the belt molded body hanging table 98, and sequentially convey the plurality of belt molded bodies 105 hung on the belt molded body hanging table 98 in the right direction.

A horizontal bar 96 is provided above and on the left side of the belt molded body hanging stand 98 . The horizontal bar 96 is provided so as to extend along the width direction of the belt molded body hanging stand 98. The horizontal bar 96 is provided below the arm portion 94.

[Operation of removal mechanism]
In the removal mechanism 9, the arm The section 94 advances from the standby position P16 to the advance position P15. In this state, when the lower pulley 55 of the traveling mechanism 5 rises, the holding of the belt molded body 105 by the pair of pulleys 51 and 55 is released. At the same time, a discharge bar (not shown) provided as a horizontal bar provided slightly below the upper pulley 51 protrudes toward the front, and the belt molded body 105 is pushed toward the front. It then falls and gets caught by a pair of arm claws 95 (see FIG. 25). Thereby, the belt molded body 105 is supported by the pair of arm claws 95.

The arm portion 94, which supported the belt molded body 105 by the arm claw portion 95, returns to the standby position P16 by performing the pivoting operation and the linear motion again. At this time, the belt molded body 105 supported by the arm claw portion 95 is caught by the horizontal bar 96 and falls downward toward the left side portion of the belt molded body hanger 98. Thereby, the belt molded body 105 can be hung on the belt molded body hanger 98. Thereafter, the belt molded body 105 is conveyed to the right side by the belt molded body conveying belt 99. This makes it possible to free up a space on the belt molded body conveying belt 99 on which the belt molded body 105 to be formed next is hung.

[Operation of molding equipment]
FIG. 27 is a diagram for explaining the operation of the forming apparatus 1 for forming the belt formed body 105, and is a flowchart showing the forming process for the belt formed body 105. As will be described later, a skive weight adjustment step is provided in a part of the molding process of the belt molded body 105 to adjust the skive treatment weight. Moreover, FIGS. 30 to 35 are schematic diagrams showing the state of the molding apparatus 1 at each step when molding the belt molded body 105. Specifically, FIG. 30 shows a state immediately before the forming apparatus 1 starts forming the belt formed body 105, and FIG. 32 is a diagram showing a state immediately before the belt ring body 100 is stretched from the spanning body 40 to the traveling mechanism 5, and FIG. 33 is a diagram showing the state immediately before being passed from the spanning body 40 to the traveling mechanism 5. 34 is a diagram showing a state in which the spanning main body 40 has moved to the standby position P2 after the belt loop body 100 has been spanned over the belt loop body 100, and FIG. 35 is a diagram illustrating a state in which the belt ring-shaped body 100 to be processed next is held by the spanning main body 40, and FIG. 9 is a diagram showing a state in which the belt is removed from the traveling mechanism 5 by the removal mechanism 9 and hung on a belt molded body hanging stand 98. FIG. The operation of the molding apparatus 1 will be described below with reference to FIGS. 27 to 35 and the like.

First, in step S1, a plurality of belt loops 100 are hung on the belt loop stand 31 by a worker or by automatic conveyance from a previous process. At this time, as shown in FIG. 30, in the molding apparatus 1, the grip portion 34 of the suspension mechanism 3 is advanced toward the hanging stand 31, and the spanning main body portion 40 is in a standby state at the standby position P2.

Next, in step S2, the belt loop body 100 is gripped by the gripping section 34. Specifically, with reference to FIGS. 6(B) and 6(C), the gripping part 34 advances in the advancing direction Bf side, and the holding part 38 moves further than the belt ring-shaped body 100 to be picked up next. The lower plate 36 of the grip portion 34 is raised in a state in which the belt ring-shaped body 100 on the near side is held down (see FIG. 6(B)). As a result, the belt loop body 100 is held between the gripping portions 34 (see FIG. 6(C)).

Next, in step S3, the belt hoop 100 is spanned from the grip section 34 to the span body section 40. Specifically, first, in step S2, the gripping section 34 that grips the belt loop body 100 retreats in the retreating direction Bb, and then the spanning body section 40 moves to the receiving position P1 (see FIG. 31). In this embodiment, after the gripping part 34 is retracted as described above, the presser part 38 is raised, and the belt ring-shaped body 100 is conveyed by a predetermined distance by the belt-shaped body conveying belt 32. Thereby, the belt hoop 100, which is then picked up by the gripping section 34, can be moved to a predetermined position.

In step S3, the gripping section 34 advances again in the advancing direction Bf side and moves to the vicinity of the spanning body section 40, and then, as shown in FIG. 10, the pair of lower claw sections 36a descends. Then, the belt loop 100 supported by the lower claw portion 36a falls and becomes caught on the upper side of the protruding member 43. Thereby, the belt ring-shaped body 100 is spanned from the grip section 34 to the span body section 40 (see FIG. 10(B)).

Next, in step S4, the belt loop body 100 is installed (set) from the installation main body 40 to the traveling mechanism 5. Specifically, first, the grip section 34 that spans the belt loop body 100 to the spanning main body section 40 in step S3 moves toward the retreat direction Bb, and then the spanning main body section 40 moves to the standby position P2. (See FIG. 32), and further moves from there to the spanning position P3 (see FIG. 9). Thereby, as shown in FIGS. 13 and 14, the belt ring-shaped body 100 is spanned from the span body section 40 to the upper pulley 51. After the spanning main body section 40 spans the belt loop body 100 over the upper pulley 51, it moves again to the standby position P2 (see FIG. 33).

In the present embodiment, after the spanning main body section 40 moves to the spanning position P3 as described above, the gripping section 34 moves to the belt hoop hanging stand 31 and grips the next belt hoop 100. It moves in the retraction direction Bb again and waits at that position until the belt loop body 100 is then spanned over the span main body 40 (see FIG. 32).

In step S4, next, referring to FIG. 15, the lower pulley 55 moves downward (see FIG. 15(B)). As a result, the belt loop is wound around the pair of pulleys 51 and 55 in the traveling mechanism 5, and an appropriate tension is applied thereto. As a result, the shape of the belt hoop 100 is adjusted. Specifically, after the belt loop 100 is formed (after preliminary formation), the unnatural deformation that would have occurred without elongation is removed, and the belt loop 100 is arranged into a substantially oval shape.

Here, as described above, the belt ring-shaped body 100 before being subjected to the skiving process and the covering process is in an unvulcanized state, and thus has poor elasticity and high stickiness.

In the forming apparatus 1 according to the present embodiment, as described above, the pair of pulleys 51 and 55 are arranged apart from each other in the vertical direction. By spanning the upper pulley 51, the lower portion of the belt loop body 100 hangs downward due to its own weight. By setting the position of the lower pulley 55 in advance so that the lower pulley 55 is disposed on the inner peripheral surface side of the part that hangs downward in this way, the belt can be placed under the lower pulley 55. The inner peripheral side portions on the lower side of the annular body 100 can be opposed to each other. That is, according to the forming apparatus 1, it is possible to wrap the belt ring-shaped body 100 around the pair of pulleys 51 and 55 by simply holding a portion of the belt-shaped body 100, so that the deformation of the belt ring-shaped body 100 is prevented. It can be prevented. Therefore, the forming apparatus 1 can provide a forming apparatus for a belt formed body that has a compact and general-purpose configuration and can suppress deformation of the belt annular body 100 during manufacturing.

Next, in step S5, skive processing is performed by the skive processing section 6.

In step S5, a skive treatment preparation step (also referred to as a skive weight adjustment step for adjusting the skive treatment weight) is provided before the skive treatment. Below, before explaining the contents of the skive process, the preparation process for the skive process will be explained.

FIG. 28 is a flowchart showing the preparation process for skiving processing. As shown in FIG. 28, the preparation process for the skive process includes a process for measuring the weight of the belt ring-shaped body 100 (step S11), a process for determining whether or not adjustment of the skive process weight is necessary (step S12), and an adjustment process for the skive process weight. There are three processing steps: processing (step S13). By going through these three processing steps, a skive weight adjustment method for adjusting the skive processing weight is realized.

First, in step S11, a weight measurement process is performed to measure the weight Wb1 of the belt ring-shaped body 100 before execution of the skive process. Note that, prior to the weight measurement process, the rotation of the upper pulley 51 is stopped, and along with this, the running operation of the belt loop 100 wound around the pair of pulleys 51 and 55 is also stopped.

The process of measuring the weight of the belt annular body 100 before the skiving process is executed by the calculation unit 121 (FIG. 19(A)) in cooperation with the load detection mechanism 130.

FIG. 29 is a flowchart showing the weight measurement process, and FIGS. 36A to 36C are schematic diagrams for explaining a series of operations of the load detection mechanism 130 in the weight measurement process (step S11). . Note that the following operations are realized by the drive control unit 136 transmitting control signals to each element based on signals from the calculation unit 121 (weight measurement unit) in the operation panel 120.

In the weight measurement process, first, in step S21, the hand 131 moves the chucks 134A and 94B provided at the tip of the arm 133 to a gripping position where the belt ring-shaped body 100 can be gripped between the pair of pulleys 51 and 55. (See FIG. 36(A)). As a result, the belt loop 100 is present between the chuck 134A and the chuck 134B.

Then, in step S22, the lower pulley 55 moves to a position slightly (for example, about 20 mm) above the position where the belt ring-shaped body 100 can be unwound (not shown). As a result, the belt loop body 100, which has been wrapped around both of the pair of pulleys 51 and 55, is released from being wrapped around the lower pulley 55. In other words, the belt hoop 100 hangs down from the upper pulley 51 due to its own weight.

Next, in step S23, the pair of chucks 134 are closed (in detail, the movable chuck 134A is moved) in response to the driving operation of the pair of solenoid actuators 135, and the belt loop between the pair of pulleys 51 and 55 is closed. The body 100 is gripped by the pair of chucks 134 (see FIG. 36(B)). That is, the belt loop 100 that has been wrapped around the pair of pulleys 51 and 55 is gripped in a state where the belt ring 100 is no longer wrapped around the lower pulley 55.

Then, in step S24, the hand 131 performs a movement operation of slightly (for example, about 20 mm) upwardly moving the arm 133, which is gripping the belt ring-shaped body 100, using the pair of chucks 134. It is temporarily stopped at the raised position (see FIG. 36(C)).

Then, in this state, the weight Wb1 of the belt ring-shaped body 100 before execution of the skive process is measured based on the load detected by the load cell 132 after the movement operation is stopped (step S25).

In this manner, in the forming apparatus 1 according to the present embodiment, the belt ring body 100 is wound around the pair of pulleys 51 and 55, so that the shape of the belt ring body 100 is adjusted. Then, the pair of arms 133 gripping the shaped belt loop body 100 move upward (see FIG. 36(C)). Therefore, compared to the case where the pair of arms 133 gripping the belt loop 100 that is not yet wrapped around the pair of pulleys 51 and 55 (in other words, the belt loop 100 that is not stretched) moves upward, The belt loop 100 moving upward can be prevented from coming into contact with the pair of pulleys 51 and 55. As a result, it is possible to measure the weight Wb of the belt ring-shaped body 100 more accurately.

Now, the weight Wb1 of the belt annular body 100 is measured by the calculation unit 121 using the above-mentioned weight calculation formula (Wb=Wab-Wa).

Specifically, the load cell 132 detects the load Wab1 (the weight including the weight of the arm 131 and the weight of the belt loop 100) after the upward movement of the arm 131 has stopped, and outputs the load detection result Wab1. The electrical signal shown is transmitted to the calculation unit 121 of the operation panel 120. The calculation unit 121 inputs the load detection result Wab1 from the load cell 132 into a predetermined weight calculation formula (Wb=Wab-Wa), and calculates the weight Wb1 of the belt ring-shaped body 100 before execution of the skiving process. . In this way, the weight Wb1 of the belt ring-shaped body 100 before execution of the skive process is measured (step S25). Note that the calculation unit 121 transmits the measurement result (weight measurement value) of the weight Wb1 of the belt ring-shaped body 100 to the determination unit 122.

Next, in steps S26 to S29, a process is performed to return the belt loop body 100 to the state where it is wound around the pair of pulleys 51 and 55.

Specifically, the hand 131 moves the arm 133, which is gripping the belt ring-shaped body 100, slightly downward (for example, about 20 mm) (step S26). Then, in response to the driving operation of the pair of solenoid actuators 135, the pair of chucks 134 release their grip on the belt ring-shaped body 100 (step S27). Thereafter, the lower pulley 55 is lowered and the belt loop 100 is wound around the lower pulley 55 (step S28), and the hand 131 moves the pair of arms 133 to the standby position (step S29).

When the process of measuring the weight of the belt annular body 100 is executed as described above (step S11 (FIG. 28)), the process of determining whether or not the skive processing weight needs to be adjusted is then executed (step S12).

In the process of determining whether or not to adjust the skive process weight, the determination unit 122 determines the weight measurement value Wb1 of the belt ring body 100 before the skive process and the reference weight of the belt ring body 100 before the skive process. The skive processing weight is compared with a predetermined setting value, and based on the comparison result, it is determined whether or not the skive processing weight needs to be adjusted. In other words, it is determined whether the skive processing weight currently set in the skive adjustment mechanism 65 is appropriate (appropriateness of the skive processing weight).

Specifically, the determination unit 122 determines that the weight measurement value Wb1 of the belt hoop 100 before the skiving process is within a predetermined allowable setting range with respect to the reference weight of the belt hoop 100 before the skiving process. It is determined whether or not it is within R1. The permissible setting range R1 is, for example, a range of ±5% (for example, ±15 g) with respect to a reference value Ws1 (for example, 310 g) that is predetermined as the reference weight of the belt hoop 100 before skiving processing is performed. ) is set. Specifically, in this embodiment, the lower limit value (setting lower limit value) Wd1 of the setting allowable range R1 is -5% of the reference value Ws1 (here, 295 g (=310-15)), The upper limit value (upper limit setting value) Wu1 of the setting allowable range R1 is +5% of the reference value Ws1 (here, 325 g (=310+15)).

Then, the determination unit 122 compares the measured weight Wb1 of the belt ring-shaped body 100 before execution of the skive process with the upper limit value Wu1, and also compares the measured weight Wb1 with the lower limit value Wd1. Then, the determining unit 122 determines whether or not the skive processing weight needs to be adjusted based on the comparison result.

For example, if the weight measurement value Wb1 of the belt ring-shaped body 100 before execution of the skiving process is within the set tolerance range R1, the determining unit 122 determines in step S12 that the skiving process weight does not need to be adjusted. Specifically, if the measured weight Wb1 of the belt ring-shaped body 100 before skiving is less than or equal to the upper limit Wu1 and greater than or equal to the lower limit Wd1, the determining unit 122 determines that the skiving weight does not need to be adjusted. Discern. In this case, the skive treatment weight adjustment (step S13) is not performed, and the flowchart of FIG. 28 (skive treatment preparation step) ends.

Then, skive processing is automatically executed. At this time, the skive processing weight currently set for the skive adjustment mechanism 65 is used as is to execute the skive processing. Specifically, with reference to FIGS. 16 and 18, the pair of skive cutters 62 are displaced from the standby position P4 to the skive position P5 with respect to the belt ring-shaped body 100 that runs due to the rotational drive of the upper pulley 51. Further, the skive adjustment mechanism 65 is displaced from the standby position P6 to the skive adjustment position P7. As a result, a skive process is performed in which the corner portion 101a of the belt ring-shaped body 100 is cut off. Then, the process after the skive process (step S5), specifically, the lower cover wrapping process (step S6) is executed. Note that details of the operation in step S6 will be described later.

On the other hand, if the weight measurement value Wb1 of the belt ring-shaped body 100 before execution of the skiving process is outside the setting allowable range R1, the determining unit 122 determines in step S12 that the skiving process weight needs to be adjusted. Specifically, if the weight measurement value Wb1 of the belt ring-shaped body 100 before skiving processing is larger than the upper limit value Wu1, or if the weight measurement value Wb1 is smaller than the lower limit value Wd1, the determination unit 122 determines that the skive process has been performed. It is determined that the processing weight needs to be adjusted.

Then, the determining unit 122 determines the adjustment amount of the skive processing weight (specifically, the pushing position of the back pushing roll 66). Specifically, the determining unit 122 skives the belt so that the weight Wb2 of the belt ring 100 after the skive process is within a predetermined allowable setting range R2 for the belt ring 100 after the skive process has been performed. Determine the processing weight adjustment amount.

For example, if the weight Wb of the belt hoop 100 before the skive process is executed exceeds the upper limit value Wu1 of the setting allowable range R1, the skive process weight will be lower than the case where the skive process is executed without adjustment. The adjustment amount of the skive adjustment mechanism 65 is determined so as to increase. Specifically, the pushing position of the back pushing roll 66 is determined so that the back pushing roll 66 is pushed closer to the skive cutter 62 than the currently set pushing position.

Furthermore, if the weight Wb1 of the belt ring-shaped body 100 before skiving processing is less than the lower limit value Wd1 of the setting allowable range R1, the skiving processing weight is reduced compared to the case where skiving processing is performed without adjustment. The adjustment amount of the skive adjustment section 65 is determined as follows. Specifically, the pushing position of the back pushing roll 66 is determined so that the back pushing roll 66 is not pushed closer to the skive cutter 62 than the currently set pushing position.

The determination unit 122 then transmits an adjustment signal to the control panel 110 (specifically, the adjustment control unit 111) of the skive adjustment unit 65.

The adjustment signal sent to the adjustment control unit 111 includes the amount of adjustment of the skive adjustment mechanism 65 (specifically, the pushing position of the back pushing roll 66). In addition to this, the adjustment signal may include a signal for operating a buzzer and a lamp provided on the operation panel 120 in order to notify the worker that the skive processing weight is being adjusted. . Further, the adjustment signal may further include a signal for displaying the adjustment amount of the skive adjustment mechanism 65 on the display section of the control panel 110 so that the operator can check the adjustment amount of the skive adjustment mechanism 65.

Then, in step S13, the adjustment control unit 111 adjusts the skive processing weight in the skive adjustment mechanism 65.

Specifically, the adjustment control unit 111 adjusts the belt loop body 100 running between the pair of pulleys 51 and 55 based on the adjustment signal from the determination unit 122 (the adjustment signal including the adjustment amount of the skive adjustment mechanism 65). The skive processing weight is adjusted by controlling the skive adjustment mechanism 65 so that the relative position with the skive cutter 62 is changed.

More specifically, the adjustment control unit 111 changes the set value of the push position of the back push roll 66 from the currently set push position to a new push position based on the adjustment amount of the skive adjustment mechanism 65 included in the adjustment signal. Change to the push-in position. As a result, in the skiving process to be described below, the back pushing roll 66 can be moved to the changed pushing position, and the relative position between the belt loop 100 running between the pair of pulleys 51 and 55 and the skive cutter 62 can be adjusted. Can be changed.

Then, the flowchart of FIG. 28 (preparation step for skive processing) ends, and skive processing is automatically started (step S5). At this time, the skive process is executed using the skive process weight adjusted in step S13.

Specifically, with reference to FIGS. 16 and 18, a pair of skive cutters 62 are moved from a standby position P4 under drive control of a servo motor 68 to a belt ring-like body 100 that runs under the rotational drive of an upper pulley 51. Displace to skive position P5. Further, the skive adjustment mechanism 65 is displaced from the standby position P6 to the adjusted (changed) skive adjustment position P7. As a result, a skive process is performed in which the corner portion 101a of the belt ring-shaped body 100 is cut off.

Now, with reference to FIG. 27 again, the operation after the skive process (step S5) will be described.

In step S6 and step S7, a covering process is performed by the canvas supply mechanism 7 and the covering process section 8. Specifically, in step S6, the lower cover 106 is wrapped around the belt loop body 100 that has undergone the skiving process. In step S7, the upper cover 107 is wrapped around the lower cover 106 that has been wrapped around the belt loop 100 in step S6.

First, in step S6, with reference to FIGS. 21 to 23, the lower cover tip gripping part 74a of the canvas supply mechanism 7 moves the tip of the lower cover 106 near the upper end of the upper pulley 51 by the cover gripping part displacement mechanism 79. Move up to. On the other hand, after that, or in parallel, the pressing roll 81, the catcher part 82, and the bottom side bending disk 88 are moved from the standby positions P8, P10, P12 to the covering processing positions P9, P11, P13 by a displacement mechanism (not shown). Move up to. Thereby, each component 81, 82, 88 for performing the process of winding the lower cover 106 around the belt loop body 100 is arranged at a predetermined position.

Then, in step S6, after the lower cover tip gripping part 74a releases its grip on the lower cover 106 and retreats backward, the upper pulley 51 is rotationally driven, so that the lower cover 106 is attached to the outer peripheral surface of the belt ring body 100. Can be wrapped around. After the wrapping of the lower cover 106 is completed in this way, the pressing roll 81 and the catcher part 82 temporarily retreat from the covering processing positions P9, P11 to the standby positions P8, P10, and the rotational drive of the upper pulley 51 is also temporarily stopped. will be stopped.

Next, in step S7, the upper cover tip gripping part 78a of the canvas supply mechanism 7 moves the tip part of the upper cover 107 to near the upper end of the upper pulley 51 by the cover gripping part displacement mechanism 79. On the other hand, after that, or in parallel therewith, the pressing roll 81 and the catcher section 82 move again to the covering processing positions P9 and P11. Thereby, each component 81, 82, 88 for performing the process of winding the upper cover 107 around the belt ring-shaped body 100 is arranged at a predetermined position.

Then, in step S7, the upper cover tip gripping part 78a releases the grip on the upper cover 107 and retreats backward, and then the upper pulley 51 is rotationally driven, so that the lower cover 107 wrapped around the belt loop 100 is An upper cover 107 is wrapped around the outer side of the belt, thereby completing the belt molded body 105.

Note that in this embodiment, while steps S5 to S7 described above are being performed, the spanning body section 40 moves to the receiving position P1, and the belt is removed from the gripping section 34 that is already gripping the next belt loop 100. Receive the ring 100 (see Figure 34). Further, in this embodiment, while steps S6 and S7 are being performed, the arm portion 94 of the removal mechanism 9 moves from the standby position P14 to the advanced position P15 (see FIG. 34).

Finally, in step S8, the belt molded body 105 is removed from the traveling mechanism 5 and hung on the belt molded body hanger 98. Specifically, in step S8, referring to FIGS. 25 and 26, the belt molded body 105, which has been released from being held by the pair of pulleys 51 and 55 due to the rise of the lower pulley 55, is pushed forward by the discharge bar. and falls downward, and is caught by a pair of arm claws 95 formed on the arm portion 94. Thereafter, when the arm part 94 returns to the standby position P16, the belt molded body 105 held by the arm part 94 is caught by the horizontal bar 96, falls downward, and is caught on the left side portion of the belt molded body hanger 98. Thereby, the belt molded body 105 can be removed from the traveling mechanism 5. Thereafter, the belt molded body 105 is conveyed to the right side by the belt molded body conveying belt 99. This makes it possible to free up a space on the belt molded body conveying belt 99 on which the belt molded body 105 to be formed next is hung (see FIG. 35).

Then, from the state shown in FIG. 35, the spanning main body 40, on which the belt ring-shaped body 100 to be subjected to the next skiving process and covering process is already hung, is processed in the same manner as in step S4 described above. The belt loop body 100 is then moved to the spanning position P3, and the belt loop body 100 is spanned over the upper pulley 51. As a result, the belt ring-like body 100 to be subjected to the next skiving process and covering process can be set on the traveling mechanism 5 by the belt ring-like body supply mechanism 2, so that multiple Belt molded bodies can be formed fully automatically. Furthermore, since the steps necessary to form the belt molded body 105 can be performed in parallel, work efficiency can be improved.

Thereafter, the steps described above are repeated in sequence. Thereby, the forming apparatus 1 according to the present embodiment can automatically form a plurality of belt formed bodies 105 one after another.

[effect]
As described above, in the forming apparatus 1 for forming the belt formed body 105 according to the first embodiment, the forming apparatus 1 automatically measures the weight of the belt ring-shaped object 100 and determines whether or not the skive processing weight needs to be adjusted. Ru. Therefore, a method of measuring the weight of each of the plurality of belt loops 100 one by one to determine whether or not the skive processing weight needs to be adjusted (so-called 100% check) is adopted without requiring any work by workers. Therefore, it is possible to reliably identify the belt hoop 100 whose skiving weight should be adjusted while ensuring productivity.

In addition, since the molding device 1 automatically determines whether or not adjustment of the skive processing weight is necessary, it is possible to reduce the amount of effort required for the worker to manually determine whether adjustment is necessary while referring to documents, etc. , there are no errors in judgment by workers.

Furthermore, since the skive processing weight is automatically adjusted by the molding device 1, it is possible to reduce the amount of effort required by the worker to manually operate the adjustment dial etc. of the skive adjustment section 65, and No adjustment errors occur.

As described above, according to the forming apparatus 1 for the belt formed body 105 according to the first embodiment, it is possible to provide a skive weight adjustment method that can achieve both belt manufacturing quality and productivity, and to improve belt manufacturing quality and productivity. It is possible to provide a compatible skive weight adjustment system.

In addition, in the forming apparatus 1 for the belt formed body 105 according to the first embodiment, by changing the pushing amount of the back pushing roll 66, the belt ring body 100 and the skive cutter 62, which run between the pair of pulleys 51 and 55, The relative position with Thereby, the relative position between the belt ring 100 and the skive cutter 62 can be changed while the belt ring 100 is running between the pair of pulleys 51 and 55. Therefore, it is possible to adjust the skive processing weight with a simple configuration.

In addition, in the forming apparatus 1 for the belt formed body 105 according to the first embodiment, the back pushing roll 66 is moved along the linear direction by drive control of the servo motor 68 (drive source) based on the adjustment signal from the determining section 122. It is configured to be movable. Therefore, since the back pushing roll 66 does not involve complicated movements and is configured to be movable along a straight line by drive control of the servo motor 68, the skive processing weight can be adjusted more easily. It is possible to realize this by using the configuration.

[evaluation]
FIG. 37 is a diagram showing evaluations (manufacturing quality evaluation and productivity evaluation) in the case where the method according to the first embodiment is adopted and the case where the methods according to Comparative Examples 1 and 2 are adopted, respectively.

Here, for each of the first embodiment and the aspects related to Comparative Examples 1 and 2, 500 belt loops 100 for standard product specifications are sequentially supplied (1 lot of 100 belts x 5 lots) and skive processing is performed. Each aspect was evaluated by producing a belt molded body 105 and a final product (wrapped V-belt) through vulcanization. The belt loop 100 to be evaluated has a circumference of 80 inches (2032 mm), a width w of about 13 mm, and a thickness t of about 8 mm, and is a belt loop for a general-purpose wrapped V-belt. Using.

In both Comparative Examples 1 and 2, the measurement of the weight of the belt ring-shaped body 100, the determination of whether or not the skive treatment weight needs to be adjusted, and the adjustment of the skive treatment weight are manually performed by an operator.

Specifically, Comparative Example 1 is the first belt loop 100 in each rolled lot of compressed rubber layers (i.e., the belt loop containing the compressed rubber layer to be skived first in each rolled lot of compressed rubber layers). In this mode, only the body 100) is subjected to weight measurement and whether or not the skive treatment weight needs to be adjusted is determined. Comparative Example 2 is an embodiment in which the gravity is measured and the necessity of adjusting the skive processing weight is determined for each of the 500 belt loops 100 one by one.

Note that the evaluation of each aspect is performed through inspection work by inspectors.

[Manufacturing quality evaluation]
First, evaluation regarding the manufacturing quality of the belt will be explained.

In manufacturing quality evaluation for each aspect, inspectors:
(1) Measure the weight Wb2 of all the belt loops 100 after the skiving process using, for example, an electronic scale,
(2) Based on whether the weight Wb2 of the belt hoop 100 after the skiving process is within the predetermined setting tolerance R2 for the belt hoop 100 after the skiving process, the non-conforming belt hoop 100 is determined. Determine the existence or non-existence of
(3) After completing the final product (wrapped V-belt), it was confirmed whether there were any manufacturing defects in the vulcanization process, etc.

For example, if the weight Wb2 of the belt loops 100 after skiving is within the set tolerance range R2 for all 500 belt loops 100 (the number corresponding to 5 rolling lots of compressed rubber layers), It is expected that there is no risk of manufacturing defects in all of them, and it is evaluated that the manufacturing quality of the belt can be ensured satisfactorily ("○" in FIG. 37).

Furthermore, if the weight Wb2 of even one of the 500 belt loops 100 after the skive treatment is outside the set tolerance range R2, there is a risk that that belt loop 100 will be defective in manufacturing. Therefore, it is evaluated that the manufacturing quality of the belt cannot be ensured ("X" in FIG. 37).

Hereinafter, evaluation results of manufacturing quality will be described for each of the first embodiment and the aspects according to Comparative Examples 1 and 2.

As shown in FIG. 37, in the method according to the first embodiment, the weight Wb1 of each of the 500 belt loops 100 is automatically measured, and it is automatically determined whether or not the skive processing weight needs to be adjusted. As a result, it was determined that among the 500 belt loops 100, seven belt loops 100 required adjustment of the skive processing weight. Then, the skiving process was performed for each of the seven belt loops 100 after the skiving process weight was automatically adjusted.

In the evaluation regarding manufacturing quality, the weight Wb2 of the belt loop 100 after skiving weight was measured by the inspector, and the number of belt loops 100 outside the setting tolerance R2 (nonconforming) was 0. Met. Furthermore, there were no manufacturing defects in the vulcanization process or the like. As a result, in the method according to the first embodiment described above, the manufacturing quality was evaluated as "good" ("○" in FIG. 37).

Next, in the method according to Comparative Example 1, the number of belt loops 100 whose skive treatment weight was adjusted was five out of 500 belt loops 100. The inspector measured the weight Wb2 of the belt loops 100 after carrying out the skiving process, and as a result, the number of nonconforming belt loops 100 was three. The weight Wb2 of these three belt loops 100 exceeds the upper limit of the set tolerance range R2, and as a result of the vulcanization process performed on these belt loops 100, the ring gold It was difficult for the belt loop 100 to fit into the V-shaped groove formed in the mold, resulting in poor vulcanization (wrinkles, deformation, etc.). As a result, the method according to Comparative Example 1 was evaluated as "problematic" ("x" in FIG. 37) regarding manufacturing quality.

Next, in the method according to Comparative Example 2, out of 500 belt loops 100, the number of belt loops 100 whose skive treatment weight was adjusted was seven. Then, the inspector measured the weight Wb2 of the belt loop 100 after carrying out the skiving process, and as a result, the number of nonconforming belt loops 100 was one. The weight Wb2 of this one belt ring body 100 exceeds the upper limit of the set allowable range R2, and as a result of the vulcanization process being performed on this belt ring body 100, it is formed into an annular mold. It was difficult for the belt loop 100 to fit into the V-shaped groove, resulting in poor vulcanization (wrinkles, deformation, etc.). As a result, the method according to Comparative Example 2 was evaluated as "problematic" ("x" in FIG. 37) regarding manufacturing quality.

[Productivity evaluation]
Next, evaluation regarding belt productivity will be explained.

In the productivity evaluation for each aspect, the inspector evaluates the total time T1 required from the supply of 500 belt loops 100 to the completion of the skiving process, and the time during which the worker was restrained within the total time T1 (restraint time ) T2 was recorded. Note that the worker's restraint time T2 is the total time (excluding mere monitoring time) in which the worker's actual work, such as manual operation time and discrimination processing time, is involved in the series of operations (processes) at time T1. .

Then, the inspector calculated the ratio of the worker's restraint time T2 to the total time T1 (=T2/T1) as the worker's restraint rate. That is, the larger the value of the worker restraint rate, the lower the number of molding devices 1 that each worker can handle, which impairs productivity.

For example, if the worker restraint rate is less than 50%, the number of molding machines 1 per worker is expected to be 2 or more, and the productivity is "good" ("〇" in the figure). It is evaluated as. In addition, if the worker restraint rate is 50% or more and 66% or less, it is expected that the number of molding machines 1 per worker will be 1.5, and there will be no problem with productivity. (It is evaluated as "△" in the figure). In addition, if the worker restraint rate exceeds 66%, it is expected that the number of molding devices 1 per worker is one, and there is a "problem" in terms of productivity (indicated by an "x" in the figure). It is evaluated as.

Productivity evaluation results will be described below for each of the first embodiment and the aspects according to Comparative Examples 1 and 2.

Here, although the forming process of the belt formed body 105 by the forming apparatus 1 is basically automated, including the process of preparing the skive processing weight, a certain amount of auxiliary work by the operator is required.

As an auxiliary work performed by a worker, for example, between the supply of the belt loop 100 and the completion of the skiving process, the shape of the belt loop 100 being conveyed on the belt loop hanging table 31 may be partially bent or deformed. One example is the work of adjusting the shape to a form that does not exist. The working time T3 of this auxiliary work was included in the worker's restraint time T2, and the ratio of the working time T3 of the auxiliary work to the total time T1 was about 25%.

In addition, as an auxiliary work by the worker, for example, between the covering process on the belt loop body 100 and the discharge of the belt molded body 105, the cover feeding pulleys are Examples include work to replace 72 and 76. The working time T4 of this auxiliary work was also included in the worker's restraint time T2, and the ratio of the working time T4 of the auxiliary work to the total time T1 was about 15%.

That is, the ratio of the working time of the auxiliary work (T3+T4) to the above-mentioned total time T1 was 40%.

As shown in FIG. 37, in terms of productivity, in the method according to the first embodiment, the worker restraint rate is approximately 40%, and the number of machines per worker is expected to be two. Ta. This means that the workers are not restrained for any work other than the above-mentioned auxiliary work. As a result, in the method according to the first embodiment described above, the productivity was evaluated as "good" ("○" in FIG. 37).

Next, in the method according to Comparative Example 1, the worker restraint rate was about 48%, and the number of machines per worker was expected to be two. As a result, the method according to Comparative Example 1 was evaluated as "good" ("○" in FIG. 37) in terms of productivity.

Next, in the method according to Comparative Example 2, the worker restraint rate was about 95%, and the number of machines per worker was expected to be one. As a result, the method according to Comparative Example 2 was evaluated as "problematic" ("x" in FIG. 37) regarding productivity.

Note that, for each aspect, FIG. 37 shows the operation time T10 required for measuring the weight of one belt ring 100, and the operation time T20 for determining the suitability of the skive processing weight and adjusting the one belt ring 100. is further shown.

Regarding the operation time T10 required for measuring the weight of one belt ring-shaped body 100, if the operation time T10 in the methods according to Comparative Examples 1 and 2 is set to "100", the operation time T10 in the method of the first embodiment is Time T10 became "97". As a result, the required operation time T10 when automatically measuring the weight of the belt circular body 100 (first embodiment) is different from the required operational time T10 when measuring the weight of the belt circular body 100 manually (Comparative Examples 1 and 2). It can be seen that this time is shorter than time T10.

In addition, regarding the operation time T20 for determining the suitability of the skive processing weight for one belt ring-shaped body 100 and adjusting operation, when the operation time T20 in the methods according to Comparative Examples 1 and 2 is set to "100", The required operation time T20 in the method of the first embodiment was "20". As a result, the required operation time T20 when automatically determining whether or not to adjust the skive processing weight and performing the adjustment operation (first embodiment) is reduced by manually determining whether or not the skive processing weight needs to be adjusted and performing the adjustment operation. It can be seen that the required operation time T20 is significantly shorter than the operation time T20 in the case where the operation is performed (Comparative Examples 1 and 2).

From the above, in the method according to the first embodiment, both manufacturing quality and productivity are "good", and the overall evaluation can be "very good" ("◎" in FIG. 37). On the other hand, the methods according to Comparative Examples 1 and 2 have "problems" regarding at least one of manufacturing quality and productivity, and are evaluated as "problems" overall ("X" in FIG. 37).

From the above evaluation results, it can be seen that the forming apparatus 1 for the belt formed body 105 according to the first embodiment described above can achieve both belt manufacturing quality and productivity.

[Second embodiment]
The second embodiment is a modification of the first embodiment. Below, differences from the first embodiment will be mainly described.

In the first embodiment described above, all of the measurement of the weight of the belt ring body 100 (step S11 (FIG. 28)), the determination of the necessity of adjusting the skive-treated weight (step S12), and the adjustment of the skive-treated weight (step S13) are performed. This is automatically executed by the molding device 1.

On the other hand, in the second embodiment, the measurement of the weight of the belt ring-shaped body 100 (step S31 (FIG. 38)) and the determination of whether or not it is necessary to adjust the skive processing weight (step S32) are carried out in the same way as in the first embodiment. This is automatically performed by the apparatus 1, while the adjustment of the skive processing weight (step S33) is performed manually by the operator.

In this second embodiment as well, similarly to the first embodiment, the molding apparatus 1 includes a skive adjustment section 10, and the skive adjustment section 10 functions as a skive weight adjustment system that adjusts the skive processing weight.

FIG. 38 is a flowchart showing a skive treatment preparation process (skive weight adjustment process) according to the second embodiment. In the second embodiment, as in the first embodiment, the skive weight adjustment method for adjusting the skive processing weight is realized by going through the preparation process shown in FIG.

In the flowchart of FIG. 38, first, the weight Wb1 of the belt ring-shaped body 100 before skiving processing is automatically measured using the load detection mechanism 130 (step S31), and the weight measurement value Wb1 and the set value (in detail , upper limit value Wu1, and lower limit value Wd1, respectively), the determining unit 122 determines whether adjustment of the skive processing weight is necessary (step S32). Note that steps S31 and S32 in the second embodiment are the same as steps S11 and S12 (FIG. 28) in the first embodiment, so the description thereof will be omitted here.

For example, if the determining unit 122 determines in step S32 that the skive processing weight does not require adjustment, the flowchart of FIG. 38, that is, the preparation process is completed, and the skive process is executed (step S5 (FIG. 27)). . At this time, the skive process is executed using the skive process weight currently set for the skive adjustment mechanism 65.

On the other hand, when the determining unit 122 determines in step S32 that the skive processing weight needs to be adjusted, the determining unit 122 transmits an adjustment signal to the worker. Specifically, an adjustment signal indicating that the skive processing weight needs to be adjusted is transmitted to a lamp and a buzzer provided on the operation panel 120. As a result, the lamp flashes and a buzzer sounds, notifying the operator that the skive processing weight needs to be adjusted.

In addition to this, a signal for temporarily stopping the operation of the molding device 1 may be included in the adjustment signal. Then, the operation of the molding device 1 may be automatically temporarily stopped based on the adjustment signal. Further, the adjustment signal may include a signal for displaying the adjustment amount of the skive adjustment mechanism 65 on a display section (not shown) of the control panel 110.

Then, based on the adjustment signal, the worker manually adjusts the skive adjustment mechanism 65, and the skive adjustment mechanism 65, as an adjustment receiving section, receives the adjustment operation by the worker (step S33).

Specifically, the worker adjusts the pushing position of the back pushing roll 66 by operating (adjusting) an adjustment dial (not shown) provided on the skive adjusting mechanism 65. After the operator performs the skive processing weight adjustment operation, the operator presses an operation restart button (not shown) of the molding apparatus 1.

As a result, the molding apparatus 1 is restarted and skive processing is performed. At this time, the skive process is executed using the skive process weight adjusted by the operator in step S33. Note that the details of the skive process (step S5) are the same as those in the first embodiment, so a description thereof will be omitted here.

Now, when the adjustment operation of the skive processing weight is performed manually by a worker, an operational error by the worker may occur. As described above, if an operator makes an operational error, the skive processing weight may not be adjusted appropriately, which may lead to a decrease in manufacturing quality.

In consideration of this point, in the second embodiment, after the skiving process, the molding apparatus 1 automatically checks whether or not the skive process weight adjustment operation has been performed appropriately (confirmation process, ) is provided. As a result, even if an operational error occurs in the adjustment operation by the operator in step S33 (FIG. 38), the belt hoop 100 that has been skived based on the incorrect skived weight remains as it is. Proceeding to the next process can be suppressed. As a result, deterioration in manufacturing quality can be suppressed.

FIG. 39 is a flowchart showing the confirmation process. The operation in FIG. 39 is performed immediately after the skive process (step S5). That is, in this second embodiment, after the skive process is once executed, it is checked whether the skive process that was actually executed was executed with an appropriate skive process weight. As will be described later, if the skive process is not performed with an appropriate skive process weight, the skive process is performed again after a readjustment operation is performed by the operator.

In the confirmation step in FIG. 39, basically the same operations as in the preparation step (steps S31 to S33) in FIG. 38 are performed.

First, in step S41, the weight Wb2 of the belt loop body 100 after the skiving process is measured again using the load detection mechanism 130. The weight remeasuring operation in step S41 is the same as the weight remeasuring operation in step S31 (FIG. 38), so a description thereof will be omitted here.

Then, in step S42, the determining unit 122 compares the weight remeasurement value Wb2 of the belt ring-like body 100 with a predetermined setting value for the belt ring-like body 100 after the skiving process, and based on the comparison result, , determine whether readjustment of skive processing weight is required. In other words, it is determined whether the skive process has been executed based on the appropriate skive process weight.

Specifically, in the determination unit 122, a reference value Ws2 (for example, 275 g) is predetermined regarding the weight of the belt loop body 100 after the skiving process. The setting allowable range R2 regarding the belt ring after the skiving process is set, for example, to a range of ±5% (for example, ±14 g) with respect to the reference value Ws2. Specifically, in this embodiment, the lower limit value Wd2 of the setting allowable range R2 is -5% of the reference value Ws2 (in this embodiment, 261g (=275-14)), and the setting allowable range The upper limit value Wu2 of R2 is +5% of the reference value Ws2 (in this embodiment, 289 g (=275+14)).

Here, if the weight Wb2 of the belt annular body 100 after the skiving process exceeds the upper limit value Wu2 of the set tolerance range R2, the belt molded body 105 with excessive volume is formed into an annular mold in the vulcanization process. It becomes difficult to fit into the wrapped V-shaped groove, and poor vulcanization (wrinkles, deformation, etc.) is likely to occur in the wrapped V-belt. However, in the visual inspection, it is relatively easy to detect vulcanization defects in the wrapped V-belt formed from the belt molded body 105 with excessive volume.

On the other hand, if the weight Wb2 of the belt ring body 100 after skiving is below the lower limit value Wd2 of the set allowable range R2, vulcanization failure due to insufficient compression ( (bubble, spongy, etc.) are likely to occur. In this case, since the surface of the wrapped V-belt is covered with canvas, it is difficult to detect vulcanization defects in the wrapped V-belt formed from the belt molded body 105 with insufficient volume in the visual inspection. .

Under these circumstances, in order to prevent vulcanized defects (bubbles, sponge-like) that are difficult to detect through visual inspection from entering the market, workers are asked to check the belt after skiving when adjusting the skiving weight. There is an awareness (judgment) that it is necessary to avoid the weight remeasurement value Wb2 of the annular body 100 falling below the lower limit value Wd2 of the setting allowable range R2. Therefore, when adjusting the skive processing weight, the pushing position of the back pushing roll 66 tends to be adjusted to be slightly pulled toward the opposite side of the skive cutter 62 from the originally intended pushing position. Conversely, when adjusting the skive processing weight, the pushing position of the back pushing roll 66 is rarely adjusted to a position closer to the skive cutter 62 than the originally intended pushing position.

In consideration of this point, in the second embodiment, the remeasured weight value Wb2 of the belt hoop 100 is compared with the upper limit Wu2 of the predetermined allowable setting range R2 for the belt hoop 100 after skiving. be done. In other words, in this second embodiment, the remeasured weight value Wb2 of the belt ring-shaped body 100 is not compared with the lower limit value Wd2 of the setting allowable range R2.

Then, the determining unit 122 determines whether or not the skive processing weight needs to be adjusted based on the comparison result between the weight re-measurement value Wb2 and the upper limit value Wu2 of the setting allowable range R2.

For example, if the re-measured weight value Wb2 of the belt ring-like body 100 after the skiving process is smaller than the upper limit value Wu2 of the setting allowable range R2, the determining unit 122 determines in step S42 that readjustment of the skiving process weight is not required. Ru. In this case, the flowchart of FIG. 39 ends without readjusting the skive processing weight. Then, the process proceeds to the next step (specifically, the lower cover wrapping process (step S6)) without executing the skiving process (step S5 (FIG. 27)) again.

On the other hand, if the re-measured weight value Wb2 of the belt ring body 100 after the skiving process is larger than the upper limit value Wu2 of the setting allowable range R2, the determining unit 122 determines in step S42 that the skiving process weight needs to be readjusted. Ru.

When it is determined in step S42 that the skive processing weight needs to be readjusted, the determination unit 122 transmits a readjustment signal to the worker indicating that the skive processing weight needs to be readjusted. Specifically, a readjustment signal indicating that the skive processing weight needs to be readjusted is transmitted to a lamp and a buzzer provided on the operation panel 120. This causes the lamp to flash and a buzzer to sound, notifying the operator that the skive processing weight needs to be readjusted.

Then, the worker manually performs a readjustment operation of the skive adjustment mechanism 65 based on the readjustment signal, and the skive adjustment mechanism 65 receives the readjustment operation by the worker as an adjustment receiving section (step S43). Note that the readjustment operation for the skive adjustment mechanism 65 is the same as the adjustment operation in step S33 of FIG. 38, so the explanation will be omitted here.

Thereafter, the operator performs an operation to readjust the skive processing weight, and then presses an operation restart button (not shown) of the molding apparatus 1. As a result, the molding apparatus 1 is restarted and the skiving process is executed again. Then, the process proceeds from step S5 to the next process, and a lower cover wrapping process (step S6 (FIG. 27)) is performed on the belt loop body 100 that has undergone the skive process.

[effect]
As explained above, in the forming apparatus 1 for the belt formed body 105 according to the second embodiment, similarly to the first embodiment, the weight measurement of the belt ring-shaped body 100 and the determination of whether adjustment of the skive processing weight is necessary are performed. It is automatically executed by the molding device 1. Therefore, it is possible to adopt a method of measuring the weight of each of the plurality of belt loops 100 one by one and determining whether or not the skive processing weight needs to be adjusted, without requiring any work by the workers, thereby increasing productivity. It is possible to reliably identify the belt loop body 100 whose skive processing weight should be adjusted while ensuring the same.

In addition, as in the first embodiment, since the determination of whether or not adjustment of the skive processing weight is necessary is automatically executed, the labor of the worker to manually determine the necessity of adjustment while referring to documents etc. is reduced. In addition, there is no possibility of errors in judgment by workers.

Furthermore, in the molding apparatus 1 according to the second embodiment, although the skive processing weight is manually adjusted by the worker, if an adjustment error occurs in the skive processing weight, a readjustment signal is sent to the worker. is sent, and the skive processing weight readjustment operation is accepted. That is, even if an error occurs in the adjustment operation of the skive processing weight, the operator can readjust the skive processing weight to an appropriate skive processing weight afterwards.

Therefore, according to the forming apparatus 1 for the belt formed body 105 according to the second embodiment, it is possible to provide a skive weight adjustment method that can achieve both belt manufacturing quality and productivity; It is possible to provide a skive weight adjustment system.

In addition, in the forming apparatus 1 for the belt formed body 105 according to the second embodiment, since the adjustment of the skive processing weight is performed by the operator, a device for automating the skive processing weight adjustment operation in the skive adjustment mechanism 65 ( (servo motor, etc.) is not required. Therefore, it is also possible to suppress equipment costs.

In addition, in the forming apparatus 1 for the belt formed body 105 according to the second embodiment, the operator can control the belt ring body 100 traveling between the pair of pulleys 51 and 55 by adjusting the pushing amount of the back pushing roll 66. The relative position between the skive cutter 62 and the skive cutter 62 can be changed. That is, the worker can change the relative position of the belt loop 100 and the skive cutter 62 while the belt loop 100 is running between the pair of pulleys 51 and 55. Therefore, it is possible to easily adjust the skive processing weight.

[evaluation]
FIG. 40 is a diagram showing evaluations (manufacturing quality evaluation and productivity evaluation) in the case where the method according to the second embodiment is adopted and the method according to Comparative Examples 1 and 2, respectively. Note that the belt loop body 100 to be evaluated, the evaluation method, the evaluation criteria, etc. are the same as in the first embodiment.

First, belt manufacturing quality evaluation will be explained.

As shown in FIG. 37, in the method according to the second embodiment, the weight Wb1 of each of the 500 belt loops 100 before the skiving process is automatically measured and the skiving process weight is adjusted. As a result of the automatic determination of necessity, it was determined that adjustment of skive processing weight was required for seven belt loops 100 out of the 500 belt loops 100. Then, for each of the seven belt loops 100, the skive processing weight was manually adjusted by the worker.

Thereafter, the weight Wb1 of each of the seven belt loops 100 after the skiving process is automatically remeasured, and it is automatically determined whether or not the skive process weight needs to be readjusted. It was determined that the skive treatment weight for one of the 100 belt hoops 100 needed to be readjusted. That is, regarding one of the seven belt loops 100, an error occurred in the adjustment operation of the skive processing weight by the worker.

However, after the readjustment operation was performed by the worker, the skiving process was performed again, and the weight Wb2 of the belt hoop 100 after the skiving process was measured by the inspector. The number of 100 was 0.

As a result, in the method according to the second embodiment described above, the manufacturing quality was evaluated as "good" ("○" in FIG. 40).

Regarding manufacturing quality evaluation, the methods according to Comparative Examples 1 and 2 were both evaluated as "problematic" ("x" in FIG. 40), as described in the first embodiment.

Next, productivity evaluation will be explained.

As shown in FIG. 40, in terms of productivity, in the method according to the second embodiment, the worker restraint rate is approximately 64%, and the number of machines per worker is expected to be 1.5. Ta. As a result, the method according to the second embodiment described above was evaluated as "no problem" ("Δ" in FIG. 40) regarding productivity.

Regarding productivity evaluation, as described in the first embodiment, the method according to Comparative Example 1 is evaluated as "good" ("○" in FIG. 40), and the method according to Comparative Example 1 is evaluated as "problematic". ” (“×” in FIG. 40).

Further, regarding the operation time T10 required for measuring the weight of one belt ring-shaped body 100, when the operation time T10 in the methods according to Comparative Examples 1 and 2 is set to "100", the operation time T10 in the method according to the second embodiment is set to "100". The required operation time T10 was "97". As a result, the required operation time T10 when automatically measuring the weight of the belt circular body 100 (second embodiment) is different from the required operational time T10 when measuring the weight of the belt circular body 100 manually (Comparative Examples 1 and 2). It can be seen that this time is shorter than time T10.

In addition, regarding the operation time T20 for determining the suitability of the skive processing weight for one belt ring-shaped body 100 and adjusting operation, when the operation time T20 in the methods according to Comparative Examples 1 and 2 is set to "100", The required operation time T20 in the method of the second embodiment was "50". As a result, the required operation time T20 when automatically determining whether or not to adjust the skive processing weight and manually performing the adjustment operation (second embodiment) is reduced by manually determining whether or not the skive processing weight needs to be adjusted and performing the adjustment operation. It can be seen that this is shorter than the required operation time T20 in the case of measurement (Comparative Examples 1 and 2).

From the above, in the method according to the second embodiment, the manufacturing quality is evaluated as "good", the productivity is evaluated as "no problem", and the overall result is "good" ("○" in FIG. 40). It can be evaluated as follows. From this evaluation result, it can be seen that the forming apparatus 1 for the belt formed body 105 according to the second embodiment described above can achieve both belt manufacturing quality and productivity.

[Modified example]
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and can be implemented with various modifications within the scope of the claims. For example, the following modification may be implemented.

(1) In the above-described embodiment, the belt loop body 100 is spanned over the upper pulley 51 by relative displacement between the support member 42 and the protrusion member 43, but the present invention is not limited to this, and the support member 42 and the protrusion member 43 may be integrated. In this case, it is necessary to provide another mechanism (such as a mechanism for pressing the belt ring 100 with a rod) for moving the belt ring 100 toward the upper pulley 51 side.

(2) In the embodiment described above, the depth d ₄₂ of the support member 42 is set to be the sum of the height h 43 of the protruding member ₄₃ and the thickness t ₅₃ of the flange 53. Not exclusively. Specifically, the depth d ₄₂ of the support member 42 may be set equal to the height h ₄₃ of the protruding member 43.

(3) In the embodiment described above, the skiving process and the covering process for the belt loop body 100 are performed on the same side (the right side in FIGS. 16 and 21, the side on which the belt loop body 100 runs downward). However, the present invention is not limited to this, and one may be performed on the right side and the other on the left side. In this case, a bidirectionally rotatable motor is used as the electric motor that drives the upper pulley 51 so that each process is performed on the belt loop 100 traveling downward during skiving and covering. It's better to be there.

(4) In the embodiment described above, the forming apparatus 1 is configured to be able to manufacture a plurality of belt formed bodies 105 fully automatically, but the present invention is not limited to this. Specifically, for example, the belt loop supply mechanism 2 and the removal mechanism 9 may be omitted. Although this increases the number of work steps required by the worker (setting the belt hoop to the traveling device and removing the belt molded body from the traveling device), it has a compact and general-purpose configuration similar to the above-mentioned embodiment. At the same time, it is possible to provide a forming apparatus for a belt molded body that can suppress deformation of the belt ring-shaped body 100 during manufacturing.

(5) In the embodiment described above, the skive processing weight is adjusted by adjusting the pushing position of the back pushing roll 66, but the invention is not limited to this. For example, the skive processing weight may be adjusted by adjusting the skive position P5 (see FIG. 18) of the skive cutter 62. Specifically, the skive cutter 62 contacts the bottom surface (the left surface in FIG. 18) of the belt loop 100 running between the pair of pulleys 51 and 55, and pushes the belt loop 100 toward the back pushing roll 66. The skive processing weight may be adjusted by adjusting the pushing position (skive position P5) of the skive cutter 62.

(6) In the second embodiment described above, in step S42 in FIG. 39, the re-measured weight value Wb2 of the belt ring-shaped body 100 after the skiving process is compared with the upper limit value Wu2 of the setting allowable range R2, and the re-weighted Although the comparison between the measured value Wb2 and the lower limit value Wd2 of the setting allowable range R2 is not performed, the present invention is not limited to this.

For example, in addition to comparing the weight remeasurement value Wb2 with the upper limit value Wu2 of the setting allowable range R2, the weight remeasurement value Wb2 may be compared with the lower limit value Wd2 of the setting allowable range R2.

However, in this case, if the weight remeasurement value Wb2 is below the lower limit value Wd2 of the set allowable range R2 (so-called, when the belt ring-shaped body 100 is shaved too much in the skiving process), the skiving process is performed again. cannot be done. Therefore, in this case, the worker may be notified that the re-measured weight Wb2 of the belt loop body 100 after the skiving process is below the lower limit value Wd2 of the set allowable range R2. As a result, the worker who receives this notification can remove the belt hoop 100 (belt hoop 100 with a relatively high possibility of insufficient vulcanization) from the production line, thereby preventing defective products. It is possible to prevent this from flowing into the market.

The present invention relates to a molding device for a belt molded body and a method for molding a belt molded body, and in particular to the molding of a wrapped V-belt in which the surface of a belt loop body formed to have a V-shaped cross-sectional shape is covered with canvas. The present invention can be widely applied to body molding devices and molding methods.

1 Belt molding device 5 Traveling mechanism 6 Skive processing section (skive adjustment mechanism)
8 Covering processing section 10 Skive adjustment section 51 Upper pulley 55 Lower pulley 62 Skive cutter (blade section)
65 Skive adjustment mechanism 66 Back pushing roll 100 Belt loop 101a Corner 105 Belt molded body 106 Lower cover (canvas)
107 Upper cover (canvas)
130 Load detection mechanism 131 Hand (moving part)
132 Load cell (load detection section)
133 Arm 134 Chuck

Claims (9)

a traveling mechanism for winding a belt loop having a rectangular cross section perpendicular to the longitudinal direction around a pair of pulleys and running between the pair of pulleys; and a belt loop running between the pair of pulleys. a skive processing mechanism that executes a skive process of bringing a blade into contact with a corner of the machine to cut off the corner; and a skive process weight that is the weight of the corner that is removed during the skive process, which is configured to be adjustable. A skive weight adjustment method for adjusting the skive processing weight using a belt molded body forming apparatus comprising a skive adjustment mechanism,
a weight measuring step of measuring the weight of the belt hoop before performing the skiving process;
Comparing the weight measurement value obtained in the weight measurement step with a setting value regarding the reference weight of the belt ring before the skiving process, and adjusting the skive process weight based on the comparison result. a determining step of determining whether or not the skive processing weight is necessary and transmitting an adjustment signal when determining that adjustment of the skive processing weight is required;
Before executing the skive process, the skive adjustment mechanism is controlled based on the adjustment signal so that the relative position of the belt ring-shaped body running between the pair of pulleys and the blade part is changed, an adjusting step of adjusting the skive processing weight;
A skive weight adjustment method comprising: In the skive weight adjustment method according to claim 1,
The skive adjustment mechanism includes a push roll that can push the belt ring toward the blade by coming into contact with a surface opposite to the corner of the belt ring that is running between the pair of pulleys. death,
In the adjusting step, the relative position of the belt ring-shaped body running between the pair of pulleys and the blade portion is changed by changing the pushing amount of the pushing roll based on the adjusting signal. How to adjust skive weight. In the skive weight adjustment method according to claim 2,
The skive weight adjustment method is characterized in that the push roll is configured to be movable in a linear direction by drive control of a drive source that can change the push amount of the push roll based on the adjustment signal. a traveling mechanism for winding a belt loop having a rectangular cross section perpendicular to the longitudinal direction around a pair of pulleys and running between the pair of pulleys; and a belt loop running between the pair of pulleys. a skive processing mechanism that executes a skive process of bringing a blade into contact with a corner of the machine to cut off the corner; and a skive process weight that is the weight of the corner that is removed during the skive process, which is configured to be adjustable. A skive weight adjustment method for adjusting the skive processing weight using a belt molded body forming apparatus comprising a skive adjustment mechanism,
a weight measuring step of measuring the weight of the belt hoop before performing the skiving process;
The weight measurement value obtained in the weight measurement step is compared with a first setting value regarding the reference weight of the belt loop before the skiving process is performed, and the skiving process weight is determined based on the comparison result. a determining step of determining whether or not adjustment is necessary, and upon determining that adjustment of the skive processing weight is required, transmitting an adjustment signal to a worker;
an adjustment step of accepting an adjustment operation for the skive adjustment mechanism by an operator based on the adjustment signal before executing the skive process;
After performing the skiving process, a weight re-measuring step of re-measuring the weight of the belt ring after the skiving process;
The weight measurement value obtained in the weight re-measuring step is compared with a second setting value regarding the reference weight of the belt loop after the skiving process is performed, and the skiving process is performed based on the comparison result. a re-determination step of determining whether readjustment of the weight is necessary, and transmitting a readjustment signal to the worker when it is determined that readjustment of the skive processing weight is required;
a readjustment step of accepting a readjustment operation for the skive adjustment mechanism by a worker based on the readjustment signal;
A skive weight adjustment method comprising: In the skive weight adjustment method according to claim 4,
The skive adjustment mechanism includes a push roll that can push the belt ring toward the blade by coming into contact with a surface opposite to the corner of the belt ring that is running between the pair of pulleys. death,
The adjustment operation and the readjustment operation are operations for changing the relative position of the belt ring-shaped body running between the pair of pulleys and the blade portion by changing the pushing amount of the push roll, respectively. A skive weight adjustment method characterized by: In the skive weight adjustment method according to any one of claims 1 to 5,
The weight measurement step includes:
A pair of gripping parts capable of gripping the belt loop between the pair of pulleys arranged apart in the vertical direction transfer the belt loop that has been wound around the pair of pulleys to the lower pulley of the pair of pulleys. a step of grasping the device in an unwrapped state;
a step in which a moving unit capable of moving the pair of grips in the vertical direction performs a movement operation of moving the pair of grips upward while gripping the belt loop;
a step in which the weight measurement section measures the weight of the belt ring-shaped body held by the pair of gripping sections after the movement operation is stopped;
A skive weight adjustment method comprising: a traveling mechanism for winding a belt loop having a rectangular cross section perpendicular to the longitudinal direction around a pair of pulleys and running between the pair of pulleys; and a belt loop running between the pair of pulleys. a skive processing mechanism that executes a skive process of bringing a blade into contact with a corner of the machine to cut off the corner; and a skive process weight that is the weight of the corner that is removed during the skive process, which is configured to be adjustable. A skive weight adjustment system for adjusting the skive processing weight in a belt molding device comprising a skive adjustment mechanism,
a weight measurement unit that measures the weight of the belt loop before the skiving process;
Comparing the weight measurement value obtained by the weight measurement unit with a set value regarding the reference weight of the belt ring before the skiving process is performed, and adjusting the skive process weight based on the comparison result. a determining unit that determines whether or not the skive processing weight is necessary and transmits an adjustment signal when determining that adjustment of the skive processing weight is necessary;
Before executing the skive process, the skive adjustment mechanism is controlled based on the adjustment signal so that the relative position of the belt ring-shaped body running between the pair of pulleys and the blade part is changed, an adjustment control unit that adjusts the skive processing weight;
A skive weight adjustment system featuring: a traveling mechanism for winding a belt loop having a rectangular cross section perpendicular to the longitudinal direction around a pair of pulleys and running between the pair of pulleys; and a belt loop running between the pair of pulleys. a skive processing mechanism that executes a skive process of bringing a blade into contact with a corner of the machine to cut off the corner; and a skive process weight that is the weight of the corner that is removed during the skive process, which is configured to be adjustable. A skive weight adjustment system for adjusting the skive processing weight in a belt molding device comprising a skive adjustment mechanism,
a weight measurement unit that measures the weight of the belt loop before the skiving process;
The weight measurement value obtained by the weight measuring section is compared with a first setting value regarding the reference weight of the belt loop before the skiving process is performed, and the skiving process weight is determined based on the comparison result. a determining unit that determines whether or not adjustment is necessary, and upon determining that adjustment of the skive processing weight is required, transmits an adjustment signal to a worker;
an adjustment reception unit that receives an adjustment operation for the skive adjustment mechanism by a worker based on the adjustment signal before executing the skive process;
Equipped with
After performing the skiving process, the weight measurement unit re-measures the weight of the belt loop after the skiving process,
The determination unit compares the weight measurement value obtained again by the weight measurement unit with a second set value regarding the reference weight of the belt ring after the skiving process, and determines the result of the comparison. Based on this, it is determined whether or not the skive processing weight needs to be readjusted, and when it is determined that the skive processing weight needs to be readjusted, a readjustment signal is sent to the worker,
The skive weight adjustment system is characterized in that the adjustment receiving unit receives a readjustment operation of the skive adjustment mechanism, which is a readjustment operation by a worker based on the readjustment signal. The skive weight adjustment system according to claim 7 or 8,
The weight measurement unit includes a pair of gripping parts that can grip the belt loop between the pair of pulleys spaced apart in the vertical direction, and a moving part that can move the pair of gripping parts in the vertical direction. death,
The pair of gripping portions grip the belt ring-shaped body that has been wrapped around the pair of pulleys in a state where the belt loop is released from the belt loop around the lower pulley of the pair of pulleys,
The moving unit executes a moving operation of moving the pair of gripping parts upward while gripping the belt loop,
The skive weight adjustment system is characterized in that the weight measuring section measures the weight of the belt loop held by the pair of gripping sections after the moving operation is stopped.