JP2001200432A - Textile machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a textile machine having resolved such a problem that, when a cleaning work is to be conducted in a conventional textile machine, a service device has sometimes made misoperations such as in piecing actions as a result of decrease in blower suction force due to opening the door of a dust box, therefore a relevant operator has needed to clean the dust box after he turned off the electric source of the service device in advance, thus resulting in troublesomeness of the cleaning work as a whole. SOLUTION: This textile machine having a service device C for making a specified service on a unit 3 through making use of the suction force of a blower 31 is such as to be equipped with a detective means 22 for directly or indirectly detecting the variation or decrease in blower suction force and a control means 23 functioning to reflect the information from the detective means 22 in the service control by the service device C and working so as to prohibit a service to the unit 3 when the variation or decrease in blower suction force is detected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the control of a service device (working vehicle) for a textile machine, and more particularly to the service and traveling control of a service device linked to a change or a decrease in suction force by a blower in a dust box.

[0002]

2. Description of the Related Art For example, in a spinning machine, a work carriage is provided so as to be movable between respective spinning units, and when a yarn defect is detected in the spinning unit or when a yarn is cut, the work carriage is provided. Moves to the position of the spinning unit where the yarn joining request has occurred, and performs the yarn joining operation. In addition, even when the package is full, the work carriage moves to the position of the corresponding spinning unit, and performs the yarn joining operation between the seed yarn and the fiber bundle on the spinning side. On the other hand, a dust box containing a blower is provided on the side of the plurality of spinning units arranged side by side, and a duct connected to the dust box extends to each spinning unit. The lint is sucked into the dust box through the duct by the suction force of the blower. Therefore, when the amount of lint sucked and accumulated in the dust box becomes equal to or more than a predetermined amount, the operator periodically cleans the lint.

[0003]

In the above-mentioned conventional construction, when the operator performs a cleaning operation, it is naturally necessary to open the door of the dust box. At this time, the suction of the duct extending to each unit is required. The negative pressure is greatly reduced. In addition, the work cart performs an operation of sucking and capturing the yarn with a suction mouse or the like in a doffing operation or a yarn splicing operation, and the suction force is also operated using the suction force of a blower in a dust box. In the splicing operation, it is necessary to appropriately maintain the suction force of the duct. The slack tube provided in each spinning unit also sucks the yarn by the suction force of the blower in order to store a predetermined amount of the yarn when the package is reversed. For this reason, if the dust box door is opened and the suction negative pressure of the duct drops while the work cart is performing the yarn splicing operation, a yarn splicing error occurs or the package surface layer is sucked. There is a problem that it is disturbed by a defect. Then, in order to avoid this problem, it is necessary for the operator to perform a cleaning operation of the dust box after performing an operation of stopping the power of the work cart in advance, which is complicated and inefficient.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. That is, as in claim 1, in a textile machine having a service device that performs a predetermined service to a unit using suction force of a blower,
A detection unit for directly or indirectly detecting a change or a decrease in suction force due to a blower, and a control unit for reflecting detection information of the detection unit on control of service by the service device.

Further, as described in claim 2, the control means controls the service device so as to prohibit the service to the unit when detecting the fluctuation or decrease of the suction force by the blower from the detection information of the detection means.

According to a third aspect of the present invention, there is provided a dust box for collecting fly waste or lint using the suction force of the blower, wherein the detecting means detects an operation related to cleaning of the dust box. Thus, the fluctuation or decrease in suction force due to the blower is indirectly detected.

According to a fourth aspect of the present invention, when the control unit detects a change or a decrease in suction force by the blower during the service by the service device, the control unit prohibits the service after the service cycle ends. Control the service control unit.

According to a fifth aspect of the present invention, the service device is a work vehicle that travels along a plurality of units, and the control unit is configured to control a change in suction force caused by a blower during travel of the service device. When the decrease is detected, the traveling of the service device is stopped immediately or after traveling to a predetermined position.

According to a sixth aspect of the present invention, the detecting means detects an essential operation when cleaning the dust box, and the control means restarts the operation of the service device based on the detection of the completion of the cleaning. Let it.

[0010] According to a seventh aspect of the present invention, there is provided a dust box for collecting fly waste or lint using the suction force of the blower, and the detecting means is provided in the dust box or a suction space communicating with the dust box. By detecting the negative pressure, the fluctuation or reduction of the suction force by the blower is directly detected.

[0011]

Next, an embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an overall configuration diagram of a spinning machine according to an embodiment to which the present invention is applied, FIG. 2 is a configuration diagram of an operation control device of a service device (working cart), and FIG. FIG. 4 is a flowchart showing a control for indirectly detecting a change in suction force by a related operation, FIG. 4 is a flowchart showing a control for indirectly detecting a change (decrease) in suction force by a switch operation, and FIG. FIG. 6 is a flowchart showing a control for directly detecting the pressure by a negative pressure detector.

First, the configuration of a spinning machine and a service device (working cart) as one embodiment of a textile machine according to the present invention will be described. In FIG. 1, a number of spinning units 3 are arranged in parallel between a motor box 1 and a dust box 2. The spinning unit 3 includes a back roller 4
And a draft device 7 having a middle roller 5 and a front roller 6, a spinning section 8 having an air injection nozzle, a nip roller 9 for drawing out a spun yarn Y generated by the spinning section 8, and storing the slack yarn at the time of yarn splicing. Slack tube 1
3, a slab catcher 10 for detecting a thick yarn portion (hereinafter referred to as a slab) of the spun yarn, a winding unit 12 for winding the yarn while traversing the yarn on a package 11, and the like. The sliver S supplied to the draft device 7 is drawn out of a sliver can provided on the back of the machine base and supplied to the back roller 4.

The spinning unit 3 is substantially in the side cross section.
It is arranged on a frame formed in a character shape, and the work cart C reciprocates in the left and right direction in FIG. Package 1 is included in work cart C
A suction mouth 19 for sucking and holding the lower thread on one side and pulling it upward is rotatably provided, and a transfer arm 18 for receiving the thread sucked and held by the suction mouth 19 and guiding it to the vicinity of a thread discharge port of the spinning unit 8. Is rotatably provided.

When the package 11 in each spinning unit 3 is full, the work cart C stops at the position of the spinning unit 3 and collects the full package, and the suction mouse 19 and By a known piecing method using the transfer arm 18,
It has a function as a doffing device for splicing the seed yarn and the spun fiber bundle and starting a winding operation on the next empty bobbin, and when a yarn break occurs in the spinning unit 3,
Stop at the position of the spinning unit 3 where the yarn joining request has occurred,
As in the case of doffing, it has a function of splicing a fiber bundle on the spinning side and a seed yarn on the winding side by a known piecing method. That is, the work cart C uses the suction action of the blower 31 to transfer the seed yarn drawn out from the seed yarn supply means (the package 11 or another seed yarn package) to the spinning unit 8 by the seed yarn conveying member. Transport. Then, after passing the seed yarn from the yarn discharge side of the spinning section 8 to the sliver introduction side, the stopped draft device 7, the spinning section 8 and the running of the seed yarn are started, and the seed yarn is supplied from the draft device 7. Has a piecing function of tangling the fiber bundle to be spliced.

After the doffing operation or the yarn splicing operation is completed, the work cart C starts running toward the next spinning unit 3 where the full winding or the yarn breakage is detected. The operation of the work cart C that performs such an operation is controlled by the operation control device 21. As the yarn splicing service performed by the service device (working cart C), the piecing in which the drawn seed yarn is entangled with the fiber bundle supplied from the spinning side and connected is described, but the present invention is not limited to this. Using the suction force of a blower, both the yarn on the winding side and the yarn on the spinning side may be sucked and captured together and introduced into a yarn splicer (mechanical knotter or pneumatic splicer). It is applicable to the textile machine of the invention.

The cause of the yarn breakage is that when a sliver is wound around each of the rollers 4, 5, 6 of the drafting device 7 and spinning is impossible, the sliver or impurities in the sliver are clogged in the spinning unit 8. When spinning is not possible, or when the sliver in the sliver can runs out, etc.,
When the slab in the spun yarn passes through the slab catcher 10, the yarn may be forcibly cut.

During normal spinning, a suction action is constantly generated also in the spinning section 8 by the blower. Thus, fly waste generated in the spinning unit 8 is always sucked and collected in the dust box 2 via a duct (not shown).
The dust box 2 is provided on the side of the spinning units 3, 3,..., And the duct 30 and the slack tube duct 14 are communicated with the dust box 2. Then, the suction mouth 1 connected to the duct 30 is sucked by the blower 31 provided in the dust box 2.
An air suction force is generated in the slack tube 13 connected to the duct 9 and the duct 14, and the yarn splicing operation is performed in each unit using the suction flow generated in the suction mouth 19 and the slack tube 13. Also, blower 3
1 is composed of a main blower and a sub blower, and the exhaust of the sub blower is sucked by the main blower, so that a high suction force is generated by the sub blower, a sufficient suction force is maintained by the suction mouth 19 and the like, and the yarn splicing operation is ensured Can also be performed.

In the dust box 2 configured as described above, yarn wastes accumulate with the continuous operation of the spinning machine. However, the spinning unit 8 always sucks the yarn to generate normal spun yarn. It is necessary to keep the flow running and the cleaning operation of this accumulated fly waste or lint must be performed during continuous operation of the spinning machine. That is, in a state where the spinning process in each spinning unit 3 is continued, the cleaning operation must be performed without stopping the suction action by the blower. However, as described above, when the dolly operation and the yarn splicing operation by the work cart C are being performed (hereinafter, such a state is referred to as the work cart C being in service), the door 2d of the dust box 2 is opened. When the cleaning operation is performed, the suction force of the suction mouth 19 and the slack tube 13 is reduced, and the yarn cannot be pulled out from the package 11 or
There is a possibility that the operation during the service may fail due to, for example, occurrence of chatter on the drawn yarn.

Therefore, in the textile machine according to the present invention, by performing the following control by the operation control device 21, the cleaning operation can be performed during the continuous operation of the spinning machine. As shown in FIG. 2, the operation control device 21 includes a detection unit 22 that directly or indirectly detects a change or a decrease in suction force caused by the blower 31, and a detection unit 22 of the work vehicle C according to a detection result of the detection unit 22. And control means 23 for controlling operation. The dust box 2 is provided with a sensor 22 s for detecting an operation related to cleaning of the dust box 2, and the sensor 22 s is a detecting unit 2 of the operation control device 21.
2 are connected. As described above, the detecting unit 22 indirectly detects a change or a decrease in the suction force of the blower 31 by detecting an operation related to cleaning of the dust box. Further, the control device 23 is connected to the control unit 2 of the work cart C via a wired or wireless communication line 23a.
4 is connected.

The operation control device 21 having such a configuration
Will be described with reference to the flowchart of FIG. First, when the operator attempts to start cleaning the dust box 2, the detecting unit 22 detects an operation related to cleaning via the sensor 22s (Step S).
1). Here, the operation related to cleaning is an operation essential for cleaning, such as an operation of opening the door 2d of the dust box 2 or an operation of a bypass switching lever 32 described later. As described above, since the detecting means 22 is a means for detecting an essential operation performed by the operator at the time of cleaning and is capable of indirectly detecting a change or decrease in suction force due to the blower, a special operation switch for cleaning is provided. There is no need, and the start and end of the cleaning operation can be reliably detected. In addition, even if a negative pressure detector and its negative pressure determination means are not used, a simple control using a simple sensor such as a microswitch can be used to indirectly detect a change or decrease in suction force due to a blower. Becomes possible.

In the dust box 2, the bypass switching lever 32 is connected to the blower 31 from the communicating portion of the duct 30.
Lever to switch the suction air flow path up to
The operation of the lever 32 is detected by the detecting means 2 via the sensor 22s.
2, the control means 23 controls the operation of the work vehicle C based on the detection. The reason why such a configuration is required is that the blower 31 cannot be stopped even during cleaning, so by performing the bypass switching, the flow path of the suction air near the door 2d in the dust box 2 is bypassed. By reducing the negative pressure near the door 2d, the operator can open and close the door 2d. And this bypass switching lever 3
The operation 2 is an indispensable operation at the time of cleaning (unless the bypass switching is performed, the suction negative pressure is large and the door 2d cannot be opened or closed). It is possible to reliably grasp the start situation and indirectly detect a change or decrease in the suction force caused by the blower 31.

When an operation related to cleaning is detected in step S1, the control means 23 inquires of the control unit 24 via the communication line 23a about the state of the work vehicle C (running or in service), and thereby the work vehicle C It is determined whether or not C is running (step S
2). If the work vehicle C is running, a command is issued to the control unit 24 of the work vehicle C, and the operation of the work vehicle C is stopped immediately or the vehicle is driven to a predetermined position, and then the operation of the work vehicle C is started. Is stopped (step S3). That is, while the operator is cleaning the dust box 2, the work cart C is controlled so as not to provide service to the spinning unit 3. By performing such control, the work cart C does not detect the spinning unit 3 in which a thread break or the like is detected during the cleaning operation, and does not move to the corresponding spinning unit 3 to start the service. It is possible to prevent mistakes in the doffing operation and the yarn joining operation in a state where the suction force by the blower 31 is reduced. Further, it is possible to prevent the work vehicle C from running uselessly, or to run the work vehicle C to a position optimal for the operation after the return.

If the control means 23 does not detect that the work vehicle C is running in step S2, it determines whether the work vehicle C is in service (step S4). Here, the state that the work cart C is being serviced means that after the work cart C is stopped at a specific unit position, the state from the start of the doffing or piecing service to the unit until the end thereof is completed. It means there is. In this example, one doffing operation or yarn splicing operation is performed via the rotating cam by one rotation of the doffing operation shaft or the yarn splicing operation shaft, so that the work cart C is in service. Means that the doffing operation shaft or the yarn splicing operation shaft is rotating. When the work vehicle C is being serviced, the operation is continued until the service cycle in service of the work vehicle C ends, and control is performed to prohibit the service after the service cycle ends (step). S5). By performing such control, when the work cart C is in service, the service is forcibly stopped in the middle of the service cycle, thereby preventing the next service operation from being performed normally. At the same time, after the end of the service cycle, control is performed so that the next service is not started, thereby preventing a service error during cleaning.

In this state, the operator performs a cleaning operation. However, since the operation of the work cart C is stopped, even if the suction force in the duct 30 and the slack tube duct 14 is reduced, the work cart C is not operated. It does not affect the driving of the car. As described above, when the detection unit 22 is configured to detect the open / closed state of the door 2d as an operation related to cleaning, the operation control unit 21 causes the operation control unit 21 to perform step operation in conjunction with the operation of opening the door 2d. From S1 to step S5
The control up to this is performed.

After the end of the cleaning operation by the operator, the detecting means 22 detects the end of the operation related to the cleaning (step S6). The end of the operation related to the cleaning is, for example, an operation of closing the door 2d, an operation of returning the bypass switching lever 32, or the like.
It is detected by the detection means 22 via 2s. Then, the control means 23 issues an instruction to restart the operation to the controller 24 of the work vehicle C based on the detection of the end of the cleaning by the detection means 22, and restarts the operation of the work vehicle C (step S7). By performing such control, the cleaning operation is completed, the bypass switching is restored, and the duct 30
In addition, the operation of the work vehicle C is resumed in a state where a high suction force can be obtained in the slack tube duct 14, so that the service by the work vehicle C can be stably performed without any service error. It is a configuration that is performed. Further, when the essential operation in the cleaning operation is detected to detect the occurrence of the cleaning operation, restarting the operation of the work cart C does not require an operation such as turning on the power of the operator. Reduce the operation,
It becomes a configuration with high working efficiency.

As described above, according to the present invention, the detecting means 22 for directly or indirectly detecting the fluctuation or reduction of the suction force by the blower 31 and the detection information of the detecting means 22 is provided by the service device (working vehicle C). And the control means 23 to be reflected in the control of the work cart C, it is possible to provide an optimum service to the unit of the work cart C without being affected by the fluctuation (decrease) of the suction force of the blower 31, and to suction the blower. When the fluctuation (decrease) of the force is detected, the work carriage C is controlled so as to prohibit the service to the unit, so that a service error caused by the fluctuation (decrease) of the suction force by the blower is prevented.

In the above-described embodiment, the operation control unit 21 detects the operation related to cleaning and controls the work cart C. However, a switch is provided around the dust box 2 and this switch is provided. It is also possible to adopt a configuration in which a change or decrease in suction force due to a blower is indirectly detected by an operation. However, in such a configuration, the operator needs to be careful not to forget to operate the switch. The control in this configuration will be described with reference to the flowchart of FIG. First, the operator performs a switch operation before starting the cleaning operation. Then, the detection means 22 of the operation control device 21 detects this switch operation (step S1). Then, similarly to the above-described embodiment, the control of steps S2 to S5 is performed to stop (prohibit) the operation of the work vehicle C. When the switch is released by the operator after the cleaning operation, the detecting means 22
Detects that the switch has been released (step S6),
Is restarted (step S7). With such a configuration, it is possible to prevent the occurrence of a service error caused by the work cart C during the cleaning work, although the operation of the operator is interposed.

In each of the above-described embodiments, a description has been given of an embodiment in which a change or reduction in suction force due to a blower is indirectly detected. However, a change or reduction in suction force is directly detected by the following configuration. As a result, a service error can be more reliably prevented. That is, as shown in FIG.
A negative pressure detector (negative pressure gauge) 2 s is provided in the dust box 2, and the negative pressure detector 2 s constantly detects a negative pressure in the dust box 2 or a suction space communicating with the dust box, and fluctuates or reduces suction power by the blower. Is detected directly.

The control in this configuration will be described with reference to the flowchart of FIG. Detection means 2 of operation control device 21
2 detects the negative pressure in the dust box 2 through the negative pressure detector 2s at all times, and detects a fluctuation or decrease in the suction force by the blower 31 in the dust box 2 (step S1).
Then, similarly to the above-described embodiment, steps S2 to S5 are performed.
And the operation of the work cart C is stopped (prohibited). When the suction force of the blower 31 returns to the normal state after the cleaning operation is completed, the detecting unit 22 detects the normal state of the negative pressure (step S6), and restarts the operation of the work cart C (step S7). . With this configuration, it is possible to accurately detect the fluctuation or decrease in suction force due to the blower, to cope with fluctuations other than during cleaning, to more reliably prevent service mistakes, and to reduce wasteful service. Prohibition can be prevented.

In the above-described embodiment, the operation control device 21 is provided on the fixed side to communicate with the work vehicle C via the communication line 23a, and the state of the work vehicle C is recognized via the communication line 23a. At the same time, the travel stop command and the like are sent. However, the operation control device 21 is mounted on the work vehicle C, the signal of the sensor 22s is taken in via a wired or wireless signal line, and the operation control device is based on the detection signal. 2
1 may control the operation of the work vehicle C. Also, in this embodiment, an example in which the present invention is applied to a spinning machine as a textile machine is shown. However, a service device (yarn splicing device) such as an automatic winder that uses the suction force of a blower for each unit.
The present invention is also applicable to a textile machine provided with a, and is not particularly limited to this embodiment.

[0031]

As described above, the present invention has the following advantages. That is, in a textile machine having a service device for performing a predetermined service to a unit using a suction force of a blower as described in claim 1, a detection for directly or indirectly detecting a change or a decrease in a suction force by a blower. Means and control means for reflecting the detection information of the detection means in the control of the service by the service device, so that the service device can provide the optimum service to the unit without being affected by the fluctuation or reduction of the suction force by the blower. It can be performed.

Further, as described in claim 2, the control means controls the service device so as to prohibit the service to the unit when detecting the fluctuation or decrease of the suction force by the blower from the detection information of the detection means. In addition, it is possible to prevent a service error due to a change or decrease in suction force caused by the blower.

According to a third aspect of the present invention, there is provided a dust box for collecting fly waste or lint using the suction force of the blower, and the detecting means detects an operation related to cleaning of the dust box. Thus, since it is intended to indirectly detect a change or decrease in suction force due to the blower, without using a negative pressure detector and a means for determining the negative pressure,
With a simple control using a simple sensor such as a microswitch, it is possible to detect a change or a decrease in the suction force due to the blower.

Further, as described in claim 4, when the control means detects a change or decrease in suction force by the blower during the service by the service device, the control means inhibits the service after the service cycle is completed. Since the service control device is controlled, the service is forcibly stopped in the middle of the service cycle to prevent the next service operation from being performed normally, and after the service cycle ends, the next service is stopped. It is controlled not to start, preventing a service error during cleaning.

According to a fifth aspect of the present invention, the service device is a work vehicle that travels along a plurality of units, and the control unit is configured to control a change in suction force caused by a blower while the service device is running. When the lowering is detected, the traveling of the service device is stopped immediately or after traveling to a predetermined position, so that useless traveling of the service device (working trolley) can be prevented. Alternatively, the vehicle can be driven to a position that is optimal for restarting the operation after the return.

According to a sixth aspect of the present invention, the detecting means detects an essential operation when cleaning the dust box, and the control means restarts the operation of the service device based on the detection of the completion of the cleaning. Therefore, since an essential operation is detected at the time of cleaning, it is not necessary to provide a special operation switch for cleaning, and the start and end of the cleaning operation can be reliably detected.

According to a seventh aspect of the present invention, there is provided a dust box for collecting fly waste or lint using the suction force of the blower, and the detecting means is provided in the dust box or a suction space communicating with the dust box. By detecting the negative pressure, the fluctuation or decrease in suction force due to the blower is directly detected, so that the fluctuation or decrease in suction force due to the blower can be accurately detected, and the fluctuation other than during cleaning is reduced. It is possible to cope with the situation at any time, and it is possible to more reliably prevent a service error and prevent a useless service from being prohibited.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a spinning machine which is an embodiment to which the present invention is applied.

FIG. 2 is a configuration diagram of an operation control device of a service device (working vehicle).

FIG. 3 is a flowchart illustrating control for indirectly detecting a change (decrease) in suction force by an operation related to cleaning.

FIG. 4 is a flowchart illustrating control for indirectly detecting a change (decrease) in suction force by operating a switch.

FIG. 5 is a flowchart showing a control for directly detecting a change (decrease) in suction force by a negative pressure detector.

[Explanation of symbols]

 Reference Signs List 2 dust box 2s negative pressure detector 3 spinning unit 21 operation control device 22 detection means 23 control means 30 duct 31 blower 32 bypass switching lever

Claims (7)

[Claims] 1. A textile machine having a service device for performing a predetermined service to a unit by utilizing a suction force of a blower, wherein a detecting means for directly or indirectly detecting a change or a decrease in a suction force by a blower; A textile machine comprising: control means for reflecting the detection information of the detection means in service control by the service device. 2. The control device according to claim 1, wherein the control device controls a service device so as to prohibit a service to the unit when detecting a change or a decrease in suction force by the blower from detection information of the detection device. Textile machine as described. 3. A dust box for collecting fly waste or lint using the suction force of the blower, wherein the detecting means detects an operation related to cleaning of the dust box to reduce the suction force of the blower. The textile machine according to claim 1 or 2, wherein the fluctuation or decrease is detected indirectly. 4. When the control unit detects a change or decrease in suction force due to a blower during service by the service device, the control unit controls the service control device so as to prohibit the service after the end of the service cycle. The textile machine according to claim 2 or 3, wherein: 5. The service device is a work vehicle traveling along a plurality of units, and the control unit detects a change or a decrease in suction force by a blower during traveling of the service device, or immediately or The textile machine according to any one of claims 1 to 4, wherein the traveling of the service device is stopped after traveling to a predetermined position. 6. The apparatus according to claim 6, wherein the detecting means detects an essential operation when cleaning the dust box, and the control means restarts the operation of the service device based on detection of completion of cleaning. A textile machine according to any one of claims 1 to 5. 7. A dust box for collecting fly waste or lint using the suction force of the blower, wherein the detecting means detects a negative pressure in the dust box or a suction space communicating with the dust box. The textile machine according to any one of claims 1 to 6, wherein a change or reduction in suction force caused by the blower is directly detected.