JP2020183091A - Rubber sleeve molding method, and rubber sleeve molding apparatus - Google Patents

Abstract

To provide a method and apparatus for forming rubber sleeves, which suppress a decrease in efficiency in the forming of rubber sleeves, as well as a decrease in the quality of transmission belts manufactured using the formed rubber sleeves as material.SOLUTION: A rubber ribbon 100 is supplied from a winding mechanism 3, driven by a traverse mechanism 4 in synchronization with the rotation of a forming drum 6, and wrapped around the perimeter of the forming drum 6 in a spiral pattern. The amount of displacement of the actual position of the rubber ribbon 100 in relation to the position of a reference rubber ribbon when the rubber ribbon 100 is wound onto the forming drum 6 by feeding the rubber ribbon 100 of a predetermined width without meandering and moving the winding mechanism 3 at a reference moving pitch. The adjusted moving pitch derived by adjusting the reference moving pitch based on the amount of displacement is calculated. Based on the adjusted moving pitch, the driving motion of the traverse mechanism 4 is controlled so as to change the speed ratio between the rotational speed of the forming drum 6 and the moving speed of the winding mechanism 3.SELECTED DRAWING: Figure 1

Description

The present invention relates to a method for forming a rubber sleeve using a ribbon-shaped rubber and a device for forming a rubber sleeve.

As a transmission belt for transmitting power, for example, a synchronous transmission belt such as a toothed belt, or a friction transmission belt such as a V belt, a V ribbed belt, or a flat belt is known.

In recent years, the technology for improving the quality of these transmission belts is maturing, but on the other hand, the technology development for suppressing the manufacturing cost such as reducing the labor required for manufacturing is being carried out. In the manufacture of the transmission belt, first, an unvulcanized rubber sleeve as a material of the transmission belt is molded. The rubber sleeve is formed into a tubular shape, and the core wire is also wound according to the specifications of the transmission belt. When the transmission belt is a wrapped V-belt, when the rubber sleeve is formed, the unvulcanized rubber sleeve is then cut into a ring-shaped belt to form a belt molded body, and the belt molded body is added. It is vulcanized to form a transmission belt. Therefore, in order to reduce the labor required for manufacturing the transmission belt, it is important to reduce the labor required for molding the rubber sleeve.

For example, in Patent Document 1, a rubber sleeve molding method and a rubber sleeve molding apparatus for molding an unvulcanized rubber sleeve by spirally winding a plurality of unvulcanized ribbon-shaped rubbers around the outer periphery of a molding drum. Is disclosed. According to the rubber sleeve molding method and the rubber sleeve molding apparatus disclosed in Patent Document 1, conventionally, unvulcanized rubber is rolled to produce an unvulcanized rubber sheet having dimensions according to specifications, and the rubber sheet is produced. The rubber sleeve, which was manufactured by cutting the rubber to the required length and connecting the ends to each other, can be molded by spirally winding multiple unvulcanized ribbon-shaped rubber around the outer circumference of the molding drum. it can. As a result, the process of forming the rubber sleeve can be simplified, and the labor required for forming the rubber sleeve can be reduced.

JP-A-2017-223355

However, the ribbon-shaped rubber spirally wound around the outer circumference of the molding drum over a plurality of circumferences may have a non-constant dimension in the width direction or may meander when wound around the molding drum. Therefore, when the ribbon-shaped rubber is wound around the outer circumference of the molding drum, the ribbon-shaped rubbers adjacent to each other in the width direction may overlap each other, or a gap may be formed between the adjacent ribbon-shaped rubbers. In order to suppress the overlap of ribbon-shaped rubbers on the outer periphery of the molding drum and the occurrence of gaps between the ribbon-shaped rubbers, the rotation speed of the molding drum is set to be slow during the molding work of the rubber sleeve to prevent the ribbon. It is necessary to carefully wrap the rubber around the molding drum. In this case, the efficiency of forming the rubber sleeve is reduced. Even when the ribbon-shaped rubber is wound around the molding drum by setting the rotation speed of the molding drum to be slow, if the dimensions of the ribbon-shaped rubber fluctuate or meander in the width direction, the ribbon-shaped rubbers may overlap or the ribbon-shaped rubber may overlap. Gap between rubbers is likely to occur.

Further, if the ribbon-shaped rubbers overlap each other during molding of the rubber sleeve, the volume of the rubber sleeve becomes excessive at the overlapping portion of the ribbon-shaped rubbers. When such an excessive volume portion occurs in the rubber sleeve, when the transmission belt is manufactured by vulcanizing the belt molded body formed by cutting the rubber sleeve, it is partially formed on the back surface of the manufactured transmission belt. There is a risk that the quality of the transmission belt will deteriorate due to bulging or uneven alignment of the core wires. Further, if a gap is generated between the ribbon-shaped rubbers during molding of the rubber sleeve, the volume of the rubber sleeve becomes insufficient at the portion where the gap is generated. If such a volume-deficient part occurs in the rubber sleeve, there is a possibility that a fillout or air bubbles may occur in the main body rubber part of the transmission belt manufactured by vulcanizing the belt molded body formed from the rubber sleeve. .. Then, the adhesive force of the core wire is lowered due to the occurrence of lack of meat or air bubbles in the rubber portion of the main body of the transmission belt, which may lead to deterioration of the quality of the transmission belt.

In view of the above circumstances, the present invention can suppress a decrease in efficiency during molding of a rubber sleeve and a decrease in quality of a transmission belt manufactured by using the molded rubber sleeve as a material. It is an object of the present invention to provide a method for forming a rubber sleeve and a device for forming a rubber sleeve.

(1) The method for forming a rubber sleeve according to a certain aspect of the present invention for solving the above problems is winding driven by a traverse mechanism in parallel with the axial direction of the forming drum in synchronization with the rotation of the forming drum. The unvulcanized rubber sleeve is formed by supplying ribbon-shaped rubber from the hooking mechanism along the ribbon supply path and winding it around the molding drum, and spirally winding the ribbon-shaped rubber around the outer periphery of the molding drum. It relates to a method of molding a rubber sleeve to be molded. Then, in the method for molding a rubber sleeve according to a certain aspect of the present invention, the ribbon-shaped rubber having a predetermined width is supplied along the ribbon supply path without meandering, and the winding mechanism moves per rotation of the molding drum. A reference defined as the ribbon-shaped rubber when the winding mechanism is moved and the ribbon-shaped rubber is wound around the molding drum based on a reference movement pitch which is a pitch and is a movement pitch corresponding to the predetermined width. A deviation amount detection step for detecting the deviation amount of the actual position of the ribbon-shaped rubber in a direction parallel to the axial direction of the molding drum with respect to the position of the ribbon rubber, and the reference movement pitch are adjusted based on the deviation amount. The traverse mechanism so as to change the speed ratio between the rotation speed of the molding drum and the movement speed of the winding mechanism based on the adjustment movement pitch calculation step of calculating the derived adjustment movement pitch and the adjustment movement pitch. It is provided with a drive control process for controlling the drive operation of the vehicle.

According to this method, ribbon-shaped rubber is supplied from a winding mechanism that moves by a traverse mechanism in parallel with the axial direction of the forming drum in synchronization with the rotation of the forming drum, and is spirally wound around the outer circumference of the forming drum a plurality of times. The rubber sleeve is formed in the above, and in addition to this, a deviation amount detection step, an adjustment movement pitch calculation step, and a drive control step are performed. Then, in the deviation amount detection step, the deviation amount of the actual position of the ribbon-shaped rubber with respect to the position of the reference ribbon rubber is detected, and in the adjustment movement pitch calculation step, the adjustment movement pitch adjusted based on the deviation amount is used. calculate. Further, in the drive control step, the drive operation of the traverse mechanism is controlled so as to change the speed ratio between the rotation speed of the forming drum and the movement speed of the winding mechanism based on the adjustment movement pitch. As a result, even if the ribbon-shaped rubber wound around the molding drum fluctuates from a predetermined width or meanders when the ribbon-shaped rubber is wound around the molding drum, the winding mechanism with respect to the rotation speed of the molding drum By adjusting the moving speed according to the amount of deviation of the actual position of the ribbon-shaped rubber with respect to the position of the reference ribbon rubber, it is possible to suppress the overlap of the ribbon-shaped rubbers and the occurrence of gaps between the ribbon-shaped rubbers. In addition, the moving speed of the winding mechanism is automatically adjusted with respect to the rotation speed of the molding drum according to the amount of displacement of the position of the ribbon-shaped rubber, and the overlapping of the ribbon-shaped rubber and the occurrence of gaps are suppressed. It is not necessary to set the rotation speed of the drum slowly and carefully wind the ribbon-shaped rubber around the molded drum. Therefore, it is possible to suppress a decrease in efficiency during molding of the rubber sleeve. Further, since the overlap of the ribbon-shaped rubber and the generation of gaps during the molding of the rubber sleeve are suppressed, it is possible to prevent the rubber sleeve from having an excessive volume portion or a volume insufficient portion. Therefore, in the transmission belt manufactured by using the molded rubber sleeve as a material, it is possible to suppress the occurrence of deficiency or air bubbles in the rubber portion of the main body, and it is possible to suppress the deterioration of quality.

Therefore, according to the above-mentioned rubber sleeve molding method, it is possible to suppress a decrease in efficiency during molding of the rubber sleeve and a decrease in quality of a transmission belt manufactured by using the rubber sleeve as a material.

(2) Preferably, in the displacement detection step, the ribbon supply path is upstream from the winding original position, which is the position on the molding drum where the ribbon-shaped rubber starts to wind around the outer circumference of the rotating molding drum. The shaft of the molding drum from the supply ribbon side deviation amount, which is the deviation amount at the supply ribbon side detection position, which is a predetermined position on the ribbon supply path, and the winding original position to the winding original position. Winding at a predetermined position on the molding drum, which is traced back along the winding direction of the ribbon-shaped rubber adjacent to the molding drum in a direction parallel to the direction and along the direction opposite to the rotation direction of the molding drum. The winding ribbon side deviation amount, which is the deviation amount at the ribbon side detection position, is detected, and in the adjustment movement pitch calculation step, the reference movement pitch is set to the supply ribbon side deviation amount and the winding ribbon side deviation amount. The adjusted movement pitch derived by adjusting based on the above is calculated.

According to this configuration, in the rubber sleeve molding method, the amount of deviation on the supply ribbon side at the supply ribbon side detection position, which is a predetermined position on the ribbon supply path that traces the ribbon supply path upstream from the original winding position, is detected. .. Therefore, when the ribbon-shaped rubber supplied to the winding original position meanders, the amount of deviation of the winding position due to the meandering is detected as the amount of deviation on the supply ribbon side. Further, in the above configuration, the amount of deviation on the winding ribbon side at the winding ribbon side detection position, which is a predetermined position on the molding drum, which is traced back from the original winding position along the direction opposite to the rotation direction of the molding drum, is detected. Therefore, when the ribbon-shaped rubber wound around the molding drum has a variation in the width direction, the deviation amount of the winding position due to the variation in the width dimension is detected as the deviation amount on the winding ribbon side. Then, in the above method, the adjustment movement pitch is calculated based on the amount of deviation on the supply ribbon side and the amount of deviation on the winding ribbon side. Therefore, the adjustment movement pitch can be calculated according to the meandering of the ribbon-shaped rubber and the fluctuation of the width dimension of the ribbon-shaped rubber. Further, in the above configuration, the amount of deviation due to the meandering of the supplied ribbon-shaped rubber and the amount of deviation due to the fluctuation of the width dimension at the position where the ribbon-shaped rubber is wound on the forming drum are determined by the ribbon-shaped rubber being wound around the forming drum. Detected before it is done. Then, the adjustment movement pitch is calculated according to the amount of deviation detected before the winding, and the ribbon-shaped rubber is wound around the molding drum based on the control according to the adjustment movement pitch. Therefore, according to the above configuration, the ribbon-shaped rubber can be wound around the molding drum by further suppressing the occurrence of overlapping and gaps of the ribbon-shaped rubber.

(3) Preferably, in the deviation amount detection step, the distance from the winding original position to the supply ribbon side detection position and the distance from the winding original position to the winding ribbon side detection position are the same. It is set to the distance.

According to this method, the distance from the winding original position to the supply ribbon side detection position and the distance to the winding ribbon side detection position are the same. Therefore, the timing of detecting the deviation amount at each position is almost the same. This eliminates the need to consider the amount of deviation caused by the timing difference between one detection and the other detection. As a result, more accurate control can be performed.

(4) Preferably, in the displacement detection step, the winding original position is a side surface portion of the ribbon-shaped rubber on the side opposite to the moving direction of the winding mechanism in a direction parallel to the axial direction of the molding drum. The amount of deviation on the supply ribbon side is set as the position of, at the detection position on the supply ribbon side, in a direction parallel to the axial direction of the molding drum, on the side opposite to the moving direction side of the winding mechanism in the reference ribbon rubber. It is detected as the amount of deviation between the position of the side surface portion and the position of the side surface portion on the side opposite to the moving direction side of the winding mechanism in the actual ribbon-shaped rubber supplied to the molding drum, and the winding ribbon side. The amount of deviation is determined by the position of the side surface portion of the reference ribbon rubber on the moving direction side of the reference ribbon rubber in the direction parallel to the axial direction of the molding drum at the winding ribbon side detection position and the position of the side surface portion of the winding mechanism on the moving direction side. It is detected as the amount of deviation from the position of the side surface portion of the winding mechanism on the moving direction side of the actual ribbon-shaped rubber.

According to this method, in the deviation amount detection step, the deviation amount on the supply ribbon side is determined by the position of the side surface portion of the reference ribbon rubber on the side opposite to the moving direction side and the actual ribbon-shaped rubber supplied to the forming drum. It is detected as the amount of deviation from the position of the side surface portion on the side opposite to the moving direction side of the winding mechanism. That is, the amount of deviation on the supply ribbon side is detected with reference to the side surface portion of the ribbon-shaped rubber. The amount of deviation on the winding ribbon side is the position of the side surface portion of the winding mechanism on the moving direction side of the reference ribbon rubber and the side surface portion of the actual ribbon-shaped rubber wound on the molding drum on the moving direction side. It is detected as the amount of deviation from the position of. That is, the amount of deviation on the winding ribbon side is also detected with reference to the side surface portion of the ribbon-shaped rubber. Therefore, even if the ribbon-shaped rubber wound around the molding drum is meandering or the width dimension is changed, the amount of deviation caused by the meandering can be reliably detected as the amount of deviation of the position of the side surface portion at each detection position. Then, based on the detected deviation amount, the ribbon-shaped rubber is formed on the drum so that the overlap between the side surface portions adjacent to each other in the width direction and the generation of the gap between the side surface portions are suppressed in the ribbon-shaped rubber. Wrapped around. Therefore, it is possible to form a rubber sleeve having a better surface condition in which the occurrence of steps due to overlapping portions and dents due to gap portions is further suppressed.

(5) Preferably, in the deviation amount detection step, the supply ribbon side deviation amount is such that the ribbon-shaped rubber is wound around the tension roll at the supply ribbon side detection position to apply tension to the ribbon-shaped rubber. Detected in the state.

According to this method, the amount of deviation on the supply ribbon side is detected in a state where tension is applied to the ribbon-shaped rubber by the tension roll. Therefore, the ribbon-shaped rubber in which the amount of deviation on the supply ribbon side is detected runs stably on the tension roll without loosening. As a result, the amount of deviation on the supply ribbon side is accurately detected.

(6) Preferably, in the deviation amount detection step, the deviation amount is detected by using a laser scanner.

According to this method, a racer scanner is used in the deviation amount detecting step of detecting the deviation amount. Therefore, high-speed detection becomes possible, and measurement can be performed with a shorter exposure time than, for example, a non-contact scanner other than a laser scanner. As a result, the amount of deviation can be accurately detected even if the rotation speed of the forming drum is increased. As a result, it is possible to further improve the efficiency in molding the rubber sleeve while ensuring the quality of the transmission belt manufactured by using the rubber sleeve as a material.

(7) Preferably, the rubber sleeve is molded by winding only one layer of the ribbon-shaped rubber in the radial direction of the molding drum.

According to this method, the rubber sleeve is formed by winding only one layer around the forming drum. Therefore, even in the case of a rubber sleeve having only one ribbon-shaped rubber layer, the generation of overlapping portions and gap portions of the ribbon-shaped rubber is suppressed. For this reason, a rubber sleeve having only one layer is used as a material, which is more affected by the overlapping portion and the gap portion of the ribbon-shaped rubber than in the case of a rubber sleeve formed by laminating a plurality of layers of ribbon-shaped rubber. Deterioration of quality can be remarkably suppressed in the manufactured transmission belt.

(8) The rubber sleeve molding apparatus according to a certain aspect of the present invention for solving the above-mentioned problems includes a molding drum, a winding mechanism for winding a ribbon-shaped rubber around the molding drum, and the winding mechanism. The ribbon-shaped rubber is provided from the winding mechanism that is driven and moved by the traverse mechanism, and includes a traverse mechanism that drives the rubber to move in parallel with the axial direction of the molding drum in synchronization with the rotation of the molding drum. Is wound around the molding drum along the ribbon supply path, and the ribbon-shaped rubber is spirally wound around the outer periphery of the molding drum a plurality of times to form an unvulvered rubber sleeve. A molding apparatus that supplies a ribbon position detector that detects the position of the ribbon-shaped rubber in a direction parallel to the axial direction of the molding drum and the ribbon-shaped rubber having a predetermined width along the ribbon supply path without meandering. At the same time, the winding mechanism is moved based on the reference movement pitch, which is the movement pitch of the winding mechanism per rotation of the molding drum and is the movement pitch corresponding to the predetermined width, and the ribbon is moved to the molding drum. The ribbon position detector determines the amount of deviation of the actual position of the ribbon-shaped rubber in a direction parallel to the axial direction of the molding drum with respect to the position of the reference ribbon rubber defined as the ribbon-shaped rubber when the rubber-shaped rubber is wound. Based on the deviation amount calculation unit that calculates based on the detection result of, the adjustment movement pitch calculation unit that calculates the adjustment movement pitch derived by adjusting the reference movement pitch based on the deviation amount, and the adjustment movement pitch. Further, a drive control unit for controlling the drive operation of the traverse mechanism is provided so as to change the speed ratio between the rotation speed of the molding drum and the movement speed of the winding mechanism.

According to this device, a molding drum, a winding mechanism for winding a ribbon-shaped rubber around the molding drum, and a traverse mechanism for driving the winding mechanism to move in parallel with the axial direction of the molding drum are provided. .. Then, the ribbon-shaped rubber is supplied from the winding mechanism along the ribbon supply path, and is spirally wound around the outer circumference of the molding drum a plurality of times to form an unvulcanized rubber sleeve. In addition to this, the apparatus includes a ribbon position detector that detects the position of the ribbon-shaped rubber in a direction parallel to the axial direction of the forming drum. Further, based on the detection result of the ribbon position detector, the deviation amount calculation unit calculates the deviation amount from the actual position of the ribbon-shaped rubber in the direction parallel to the axial direction of the forming drum with respect to the position of the reference ribbon rubber. Further, the adjustment movement pitch calculation unit calculates the adjustment movement pitch derived by adjusting the reference movement pitch based on the deviation amount. Further, the drive control unit controls the drive operation of the traverse mechanism so as to change the speed ratio between the rotation speed of the forming drum and the movement speed of the winding mechanism based on the adjusted movement pitch. As a result, even if the ribbon-shaped rubber wound around the molding drum fluctuates from a predetermined width or meanders when the ribbon-shaped rubber is wound around the molding drum, the winding mechanism with respect to the rotation speed of the molding drum By adjusting the moving speed according to the amount of deviation of the actual position of the ribbon-shaped rubber with respect to the position of the reference ribbon rubber, it is possible to suppress the overlap of the ribbon-shaped rubbers and the occurrence of gaps between the ribbon-shaped rubbers. In addition, the moving speed of the winding mechanism is automatically adjusted with respect to the rotation speed of the molding drum according to the amount of displacement of the position of the ribbon-shaped rubber, and the overlapping of the ribbon-shaped rubber and the occurrence of gaps are suppressed. It is not necessary to set the rotation speed of the drum slowly and carefully wind the ribbon-shaped rubber around the molded drum. Therefore, it is possible to suppress a decrease in efficiency during molding of the rubber sleeve. Further, since the overlap of the ribbon-shaped rubber and the generation of gaps during the molding of the rubber sleeve are suppressed, it is possible to prevent the rubber sleeve from having an excessive volume portion or a volume insufficient portion. Therefore, in the transmission belt manufactured by using the molded rubber sleeve as a material, it is possible to suppress the occurrence of deficiency or air bubbles in the rubber portion of the main body, and it is possible to suppress the deterioration of quality.

Therefore, according to the above-mentioned rubber sleeve molding apparatus, it is possible to suppress a decrease in efficiency during molding of the rubber sleeve and also to suppress a decrease in the quality of the transmission belt manufactured by using the rubber sleeve as a material.

(9) Preferably, the ribbon position detector is upstream of the ribbon supply path from the winding original position, which is a position on the molding drum at which the ribbon-shaped rubber begins to wind around the outer periphery of the rotating molding drum. A supply ribbon position detector that detects the position of the ribbon-shaped rubber in a direction parallel to the axial direction of the molding drum at a supply ribbon side detection position that is a predetermined position on the ribbon supply path and the winding. From the original position, along the winding direction of the ribbon-shaped rubber around the forming drum and in the direction opposite to the rotation direction of the forming drum, which is adjacent to the winding original position in a direction parallel to the axial direction of the forming drum. A winding ribbon position detector that detects the position of the ribbon-shaped rubber in a direction parallel to the axial direction of the molding drum at a winding ribbon side detection position that is a predetermined position on the molding drum that goes back along the molding drum. The deviation amount calculation unit calculates the supply ribbon side deviation amount, which is the deviation amount at the supply ribbon side detection position, based on the detection result of the supply ribbon position detector, and detects the winding ribbon position. Based on the detection result of the device, the winding ribbon side deviation amount, which is the deviation amount at the winding ribbon side detection position, is calculated, and the adjustment movement pitch calculation unit supplies the reference movement pitch. The adjusted movement pitch derived by adjusting based on the ribbon side deviation amount and the winding ribbon side deviation amount is calculated.

According to this device, the ribbon position detector is parallel to the axial direction of the forming drum at the supply ribbon side detection position, which is a predetermined position on the ribbon supply path upstream of the ribbon supply path from the winding original position. It is configured to include a supply ribbon position detector that detects the position of the ribbon-shaped rubber in the direction. The supply ribbon position detector detects the amount of deviation on the supply ribbon side at the detection position on the supply ribbon side. Therefore, when the ribbon-shaped rubber supplied to the winding original position meanders, the amount of deviation of the winding position due to the meandering is detected as the amount of deviation on the supply ribbon side. Further, the ribbon position detector is parallel to the axial direction of the molding drum at the winding ribbon side detection position, which is a predetermined position on the molding drum, which is traced back from the original winding position along the direction opposite to the rotation direction of the molding drum. It includes a wound ribbon position detector that detects the position of the ribbon-shaped rubber in the direction. The ribbon position detector detects the amount of deviation on the winding ribbon side at the detection position on the winding ribbon side. Therefore, when the ribbon-shaped rubber wound around the molding drum has a variation in the width direction, the deviation amount of the winding position due to the variation in the width dimension is detected as the deviation amount on the winding ribbon side. Further, in the above device, the deviation amount calculation unit calculates the deviation amount on the supply ribbon side, which is the deviation amount at the detection position on the supply ribbon side, based on the detection result of the supply ribbon position detector, and the winding ribbon position detector. The winding ribbon side deviation amount, which is the deviation amount at the winding ribbon side detection position, is calculated based on the detection result of. Further, the adjustment movement pitch calculation unit calculates the adjustment movement pitch based on the supply ribbon side deviation amount and the winding ribbon side deviation amount. Therefore, the adjustment movement pitch can be calculated according to the meandering of the ribbon-shaped rubber and the fluctuation of the width dimension of the ribbon-shaped rubber. Further, in the above device, the amount of deviation due to the meandering of the supplied ribbon-shaped rubber and the amount of deviation due to the fluctuation of the width dimension at the position where the ribbon-shaped rubber is wound on the forming drum are determined by winding the ribbon-shaped rubber around the forming drum. Detected before it is done. Then, the adjustment movement pitch is calculated according to the amount of deviation detected before the winding, and the ribbon-shaped rubber is wound around the molding drum based on the control according to the adjustment movement pitch. Therefore, according to the above configuration, the ribbon-shaped rubber can be wound around the molding drum by further suppressing the occurrence of overlapping and gaps of the ribbon-shaped rubber.

(10) Preferably, the distance from the winding original position to the supply ribbon side detection position and the distance from the winding original position to the winding ribbon side detection position are set to the same distance.

According to this device, the distance from the winding original position to the supply ribbon side detection position and the distance to the winding ribbon side detection position are the same. Therefore, the timing of detecting the deviation amount at each position is almost the same. This eliminates the need to consider the amount of deviation caused by the timing difference between one detection and the other detection. As a result, more accurate control can be performed.

(11) Preferably, the winding original position is set as a position of a side surface portion of the ribbon-shaped rubber opposite to the moving direction of the winding mechanism in a direction parallel to the axial direction of the molding drum. The supply ribbon position detector is a position of a side surface portion of the ribbon-shaped rubber on the side opposite to the moving direction side of the winding mechanism at the supply ribbon side detection position, in a direction parallel to the axial direction of the molding drum. The position is detected, and the winding ribbon position detector is a position of a side surface portion of the ribbon-shaped rubber on the moving direction side of the winding mechanism at the winding ribbon side detection position, and is in the axial direction of the molding drum. The deviation amount calculation unit detects the position in the direction parallel to the above, and is the deviation amount at the supply ribbon side detection position based on the detection result of the supply ribbon position detector, which is the axial direction of the molding drum. The position of the side surface portion of the reference ribbon rubber opposite to the moving direction side of the winding mechanism and the moving direction side of the winding mechanism in the actual ribbon-shaped rubber supplied to the molding drum. The supply ribbon side deviation amount is calculated as the deviation amount with respect to the position of the side surface portion on the opposite side to the above side, and the deviation at the winding ribbon side detection position is calculated based on the detection result of the winding ribbon position detector. The amount, which is the position of the side surface portion of the reference ribbon rubber on the moving direction side in the direction parallel to the axial direction of the molding drum, and the actual ribbon-shaped rubber wound around the molding drum. The amount of deviation on the winding ribbon side is calculated as the amount of deviation from the position of the side surface portion of the winding mechanism on the moving direction side.

According to this device, the supply ribbon position detector is the position of the side surface portion of the ribbon-shaped rubber on the side opposite to the moving direction side of the winding mechanism at the supply ribbon side detection position, and is parallel to the axial direction of the forming drum. Detects position in direction. Then, in the deviation amount calculation unit, based on the detection result, it is supplied as the deviation amount of the position of the side surface portion on the side opposite to the moving direction side of the actual ribbon-shaped rubber supplied to the molding drum with respect to the reference ribbon rubber. Calculate the amount of deviation on the ribbon side. That is, the calculation of the amount of deviation on the supply ribbon side is performed with reference to the side surface portion of the ribbon-shaped rubber. Further, the winding ribbon position detector detects the position of the side surface portion of the ribbon-shaped rubber on the moving direction side of the ribbon-shaped rubber in the direction parallel to the axial direction of the forming drum at the winding ribbon side detection position. To do. Then, based on the detection result, the deviation amount calculation unit determines the deviation amount of the position of the side surface portion of the winding mechanism on the moving direction side of the actual ribbon-shaped rubber supplied to the molding drum with respect to the reference ribbon rubber on the winding ribbon side. Calculate the amount of deviation. That is, the amount of deviation on the winding ribbon side is also calculated with reference to the side surface portion of the ribbon-shaped rubber. Therefore, even if the ribbon-shaped rubber wound around the molding drum is meandering or the width dimension is changed, the amount of deviation caused by these can be reliably detected and calculated as the amount of deviation of the position of the side surface portion at each detection position. it can. Then, based on the calculated displacement amount, the ribbon-shaped rubber is formed on the drum so that the overlap between the side surface portions adjacent to each other in the width direction and the generation of the gap between the side surface portions are suppressed in the ribbon-shaped rubber. Wrapped around. Therefore, it is possible to form a rubber sleeve having a better surface condition in which the occurrence of steps due to overlapping portions and dents due to gap portions is further suppressed.

(12) Preferably, a tension roll around which the ribbon-shaped rubber is wound is further provided at the supply ribbon side detection position, and the supply ribbon position detector has the ribbon-shaped rubber tension roll at the supply ribbon side detection position. The position of the ribbon-shaped rubber in a direction parallel to the axial direction of the molding drum is detected in a state where the ribbon-shaped rubber is wound around the ribbon and tension is applied to the ribbon-shaped rubber.

According to this device, the amount of deviation on the supply ribbon side is detected in a state where tension is applied to the ribbon-shaped rubber by the tension roll. Therefore, the ribbon-shaped rubber in which the amount of deviation on the supply ribbon side is detected runs stably on the tension roll without loosening. As a result, the amount of deviation on the supply ribbon side is accurately detected.

(13) Preferably, the ribbon position detector is a laser scanner.

According to this device, a racer scanner is used as a ribbon position detector that detects the position of the ribbon-shaped rubber. Therefore, high-speed detection becomes possible, and measurement can be performed with a shorter exposure time than, for example, a non-contact scanner other than a laser scanner. As a result, the amount of deviation can be accurately detected even if the rotation speed of the forming drum is increased. As a result, it is possible to further improve the efficiency in molding the rubber sleeve while ensuring the quality of the transmission belt manufactured by using the rubber sleeve as a material.

(14) The rubber sleeve is molded by winding only one layer of the ribbon-shaped rubber in the radial direction of the molding drum.

According to this device, the rubber sleeve is formed by winding only one layer around the forming drum. Therefore, even in the case of a rubber sleeve having only one ribbon-shaped rubber layer, the generation of overlapping portions and gap portions of the ribbon-shaped rubber is suppressed. For this reason, a rubber sleeve having only one layer is used as a material, which is more affected by the overlapping portion and the gap portion of the ribbon-shaped rubber than in the case of a rubber sleeve formed by laminating a plurality of layers of ribbon-shaped rubber. Deterioration of quality can be remarkably suppressed in the manufactured transmission belt.

According to the present invention, it is possible to suppress a decrease in efficiency during molding of a rubber sleeve and to suppress a decrease in quality of a transmission belt manufactured by using the molded rubber sleeve as a material. A method and a rubber sleeve molding apparatus can be provided.

It is a perspective view which shows the rubber sleeve molding apparatus which concerns on one Embodiment of this invention. It is a top view which shows by omitting a part of the rubber sleeve molding apparatus. It is a side view which shows by omitting a part of the rubber sleeve molding apparatus. It is a figure which shows the belt sleeve including the rubber sleeve which was molded around the outer circumference of the molding drum in the molding apparatus of a rubber sleeve. It is a figure which shows the toothed belt as an example of the transmission belt manufactured from the belt sleeve including the rubber sleeve molded by the rubber sleeve molding apparatus. It is a figure for demonstrating the control device in the rubber sleeve molding apparatus, and is the figure which shows typically together with a part of a sleeve holding mechanism, a winding mechanism, and a traverse mechanism. It is a figure which shows the part of the molding drum enlarged, and is the figure which shows the state in which the ribbon-shaped rubber is wound around the molding drum. It is sectional drawing which shows typically the state in which the ribbon-shaped rubber is wound around a molding drum. It is a flowchart which shows the molding method of the rubber sleeve which concerns on one Embodiment of this invention. It is a figure which shows in a schematic form by enlarging the detection position on the supply ribbon side in the rubber sleeve molding apparatus. It is a figure which shows in a schematic view by enlarging the detection position on the winding ribbon side in the rubber sleeve molding apparatus. It is a table which shows in a list about the rubber composition of the rubber sleeve which concerns on Example and comparative example. It is a table which showed the constituent material of the core wire of the rubber sleeve which concerns on Example and the comparative example in a list. It is a figure which shows in a list about the material of the tooth cloth of the rubber sleeve which concerns on Example and comparative example.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a rubber sleeve molding apparatus 1 according to an embodiment of the present invention. FIG. 2 is a plan view showing a rubber sleeve molding apparatus 1 with a part omitted. FIG. 3 is a side view showing a rubber sleeve molding apparatus 1 with a part omitted. FIG. 4 is a diagram showing a belt sleeve 102 including a rubber sleeve 101 formed on the outer periphery of a forming drum 6 in the rubber sleeve forming apparatus 1. In FIG. 4, the elements other than the molding drum 6 in the rubber sleeve molding apparatus 1 are schematically shown by omitting the illustration. FIG. 5 is a diagram showing a toothed belt W1 as an example of a transmission belt manufactured from a belt sleeve 102 including a rubber sleeve 101 molded by the rubber sleeve molding apparatus 1. Although the toothed belt W1 is provided in a ring shape, FIG. 5 is shown as a perspective view including a cross section of a part of the toothed belt W1 in the circumferential direction. The rubber sleeve molding device 1 of the present embodiment is configured as a device for molding the rubber sleeve 101 constituting the belt sleeve 102 used as the material of the transmission belt, and is used when manufacturing the transmission belt.

The method for forming a rubber sleeve according to an embodiment of the present invention is configured as a method for forming a rubber sleeve 101 by spirally winding a ribbon-shaped rubber 100 around a plurality of circumferences of a forming drum 6. Then, the rubber sleeve molding method of the present embodiment is carried out by operating the rubber sleeve molding device 1 of the present embodiment. Further, the rubber sleeve molding method of the present embodiment is configured as a method of molding the rubber sleeve 101 constituting the belt sleeve 102 used as the material of the transmission belt, and is used when manufacturing the transmission belt. The rubber sleeve molding method of the present embodiment is configured as a rubber sleeve molding step in the transmission belt manufacturing process. The belt sleeve 102 as a material for the transmission belt includes a core wire or the like as a material other than rubber and a rubber sleeve 101. With a core wire other than rubber wound around the outer circumference of the molding drum 6, a ribbon-shaped rubber 100 is wound around the outer circumference of the molding drum 6 from above the core wire or the like to form a rubber sleeve 101, thereby forming a belt. The sleeve 102 is molded. Hereinafter, the rubber sleeve molding device 1 of the present embodiment will be described, and then, the rubber sleeve molding method of the present embodiment, which is carried out by operating the rubber sleeve molding device 1, will be an outline of the transmission belt manufacturing method. I will explain it together.

[Rubber sleeve molding device]
The rubber sleeve molding apparatus 1 of the present embodiment shown in FIGS. 1 to 3 is used when carrying out the method of molding the rubber sleeve of the present embodiment. When the rubber sleeve molding device 1 is operated, the rubber sleeve molding method of the present embodiment is implemented, and as shown in FIG. 4, the unvulcanized rubber sleeve 101 is molded to form the rubber sleeve 101. The belt sleeve 102 included as an element is molded. The belt sleeve 102 is configured to include a rubber sleeve 101 formed by spirally winding a ribbon-shaped rubber 100 around a plurality of circumferences of a forming drum 6, and is used as a material for a transmission belt. The ribbon-shaped rubber 100 is formed by forming the rubber material into a strip shape by rolling. Further, as the transmission belt manufactured by using the belt sleeve 102 including the rubber sleeve 101 as a component, the synchronous transmission belt such as the toothed belt W1 shown in FIG. 5, the V belt, the V ribbed belt, and the flat are used. A friction transmission belt such as a belt can be exemplified. There are two types of V-belts: a raw-edge type in which a rubber layer is exposed on the side surface for friction transmission, and a wrapped type in which the belt is covered with an outer cover.

The rubber sleeve molding device 1 is configured to include a sleeve holding mechanism 2, a winding mechanism 3, a traverse mechanism 4, a control device 5, and the like.

The sleeve holding mechanism 2 is for holding the molding drum 6 for holding the belt sleeve 102 including the unvulcanized rubber sleeve 101, and for rotating the molding drum 6 around the central axis L6 of the molding drum 6. The molding drum rotation mechanism 7 of the above is provided.

The molding drum 6 is provided as a rotating body in which the rubber sleeve 101 and the belt sleeve 102 including the rubber sleeve 101 are formed on the outer periphery by winding the ribbon-shaped rubber 100 as the material of the rubber sleeve 101 constituting the belt sleeve 102. It has a cylindrical outer peripheral surface. The circumferential length (peripheral length) of the outer peripheral surface of the molding drum 6 is set to be substantially the same as the circumferential length (peripheral length) of the inner peripheral surfaces of the unvulcanized rubber sleeve 101 and the belt sleeve 102. In the rubber sleeve molding apparatus 1 according to the present embodiment, the molding drum 6 is arranged sideways, and the central axis L6 of the molding drum 6 faces the horizontal direction. The orientation of the molding drum 6 may be vertical. The forming drum 6 is rotatably supported around the central axis L6 of the forming drum 6 by the forming drum rotating mechanism 7. In FIG. 1 and FIG. 6 described later, the rotation direction R6 of the forming drum 6 rotationally driven by the forming drum rotating mechanism 7 is indicated by an arrow R6. In the rubber sleeve molding apparatus 1, the ribbon-shaped rubber 100 is attracted to the molding drum 6 and wound around the molding drum 6 by the rotation of the molding drum 6, as will be described later. In the rubber sleeve molding apparatus 1 according to the present embodiment, for example, the diameter of the outer circumference of the molding drum 6 is set to about 290 mm.

The molding drum rotation mechanism 7 includes a molding drum rotation motor 8 and a support shaft 9.

The forming drum rotation motor 8 is provided as a drive source for applying a rotational force around the central axis L6 to the forming drum 6. The forming drum rotation motor 8 is, for example, an electric motor. The output shaft of the forming drum rotation motor 8 is connected to the support shaft 9 so as to be able to transmit power. The support shaft 9 is integrally rotatably connected to the forming drum 6.

The support shaft 9 supports the forming drum 6. As a result, the driving force of the forming drum rotation motor 8 is transmitted to the forming drum 6 via the support shaft 9. The support shaft 9 is supported by a support column (not shown) via a bearing. The winding mechanism 3 is arranged at a position adjacent to the forming drum 6 of the sleeve holding mechanism 2 having the above configuration.

Further, the forming drum rotation mechanism 7 is configured to control the operation based on a control command from the control device 5. Specifically, the rotational operation of the forming drum rotation motor 8 is controlled based on the control command from the control device 5. Thereby, the rotation speed of the forming drum 6 is controlled. FIG. 6 is a diagram for explaining the control device 5 in the rubber sleeve molding device 1, and is a diagram schematically showing a part of the sleeve holding mechanism 2, the winding mechanism 3, and the traverse mechanism 4.

With reference to FIG. 6, the molding drum rotation mechanism 7 is provided with a drum rotation position detector 47 that detects the rotation position and the rotation speed of the molding drum 6. The drum rotation position detector 47 is provided as, for example, an encoder attached to the molding drum rotation motor 8. Then, the drum rotation position detector 47 is connected to the control device 5, and transmits a detection signal of the rotation position of the molding drum 6 to the control device 5. The control device 5 controls the rotation speed of the molding drum 6 to a predetermined speed by feedback-controlling the rotation of the molding drum rotation motor 8 based on the detection signal from the drum rotation position detector 47.

The winding mechanism 3 is formed from the width of the unvulcanized rubber sleeve 101 in order to form the unvulcanized rubber sleeve 101 having a predetermined thickness and the belt sleeve 102 including the rubber sleeve 101 on the outer periphery of the molding drum 6. Is also configured as a portion for winding the ribbon-shaped rubber 100 having a short width around the molding drum 6.

The winding mechanism 3 includes a base 11, a ribbon position detector 70, a feeding mechanism 13, a passing mechanism 14, and a film peeling mechanism 15.

The base 11 has the winding ribbon position detector 12, the feeding mechanism 13, the passing mechanism 14, the film peeling mechanism 15, and the supply ribbon position detector 16 arranged in a predetermined direction parallel to the central axis L6 (axial direction X1). It is provided as an integrally movable support member. The base 11 (winding mechanism 3) is driven by the traverse mechanism 4 in a direction parallel to the axial direction X1 of the forming drum 6 and moves in that direction.

The base 11 is formed by, for example, superimposing a rectangular plate-shaped member and an elongated plate-shaped member. The base 11 is arranged below the position of the central axis L6 in the vertical direction. The height position of the base 11 may be higher, lower, or the same as the position of the central axis L6 in the vertical direction. A delivery mechanism 13 is provided on the base 11.

The ribbon position detector 70 includes a winding ribbon position detector 12 and a supply ribbon position detector 16.

The winding ribbon position detector 12 is supported by a support member 17 fixed to the base 11. Then, the winding ribbon position detector 12 detects the position of the ribbon-shaped rubber 100 for detecting the amount of deviation in the direction parallel to the axial direction X1 of the ribbon-shaped rubber 100 at a predetermined position on the outer circumference of the molding drum 6. It is configured to do. Further, the winding ribbon position detector 12 is connected to the control device 5 and is configured to transmit the detected position of the ribbon-shaped rubber 100 to the control device 5. In the rubber sleeve molding apparatus 1 according to the present embodiment, the winding ribbon position detector 12 included in the ribbon position detector 70 is configured as a laser scanner. More specifically, the winding ribbon position detector 12 emits a laser to a planar region over a predetermined range toward the ribbon-shaped rubber 100 wound around the outer circumference of the molding drum 6. Then, the winding ribbon position detector 12 receives the reflected wave of the laser reflected on the outer peripheral surface of the molding drum 6 and the surface of the ribbon-shaped rubber 100, and calculates the distance by the time until the reflected wave returns. As a result, the coordinates of the outer peripheral portion of the molding drum 6 and the portion of the ribbon-shaped rubber 100 are acquired, and the position of the ribbon-shaped rubber 100 is detected.

The supply ribbon position detector 16 is supported by a support member 24 fixed to the base 11. Then, the supply ribbon position detector 16 shifts the ribbon-shaped rubber 100 on the tension roll 22 of the first tension mechanism 19 at the supply ribbon side detection position Z1 described later in a direction parallel to the axial direction X1 of the molding drum 6. It is configured to detect the position of the ribbon-shaped rubber 100 for detecting the above. The supply ribbon position detector 16 is a ribbon-shaped rubber 100 in a direction parallel to the axial direction X1 of the forming drum 6 in a state where the ribbon-shaped rubber 100 is wound around the tension roll 22 and tension is applied to the ribbon-shaped rubber 100. Detects the position of. Further, the supply ribbon position detector 16 is connected to the control device 5 and is configured to transmit the detected position of the ribbon-shaped rubber 100 to the control device 5. In the rubber sleeve molding apparatus 1 according to the present embodiment, the supply ribbon position detector 16 included in the ribbon position detector 70 is configured as a laser scanner. More specifically, the supply ribbon position detector 16 emits a laser to a planar region over a predetermined range toward the ribbon-shaped rubber 100 moving on the tension roll 22. Then, the supply ribbon position detector 16 receives the reflected wave of the laser reflected on the surface of the tension roll 22 and the surface of the ribbon-shaped rubber 100, and calculates the distance by the time until the reflected wave returns. The position of the ribbon-shaped rubber 100 is detected by acquiring the coordinates of the portion of the tension roll 22 and the portion of the ribbon-shaped rubber 100.

The feeding mechanism 13 is provided to supply the ribbon-shaped rubber 100 to the molding drum 6. The feeding mechanism 13 holds the ribbon-shaped rubber 100, and supplies the ribbon-shaped rubber 100 to the forming drum 6 via the first tension mechanism 19 and the passing mechanism 14, which will be described later. The ribbon-shaped rubber 100 supplied to the forming drum 6 comes into contact with the forming drum 6 at the winding original position O described later, and is wound around the outer periphery of the forming drum 6 as the forming drum 6 rotates. The delivery mechanism 13 has a bobbin 18 and a first tension mechanism 19.

The bobbin 18 is a member having a cylindrical outer peripheral surface, and holds the ribbon-shaped rubber 100 in a state in which the ribbon-shaped rubber 100 is wound. Further, the ribbon-shaped rubber 100 is held by the bobbin 18 of the winding mechanism 3 in a state where one side surface of the ribbon-shaped rubber 100 is wound in a plurality of layers along the film 107. That is, the ribbon-shaped rubber 100 is wound around the bobbin 18 in a state where the ribbon-shaped rubber 100 and the film 107 are alternately laminated.

The bobbin 18 is rotatably supported by a support member 21 via a support shaft 20 and a bearing (not shown). In the rubber sleeve molding apparatus 1 according to the present embodiment, the central axis of the bobbin 18 is arranged parallel to the central axis L6 of the molding drum 6. Further, a support shaft 20 and a bobbin 18 are arranged at the upper end of the support member 21. Further, the lower end portion of the support member 21 is fixed to the base 11.

With the above configuration, the bobbin 18 rotates around the support shaft 20 when the ribbon-shaped rubber 100 is sent out. The ribbon-shaped rubber 100 unwound from the bobbin 18 is sent to the first tension mechanism 19.

The first tension mechanism 19 is provided to apply a predetermined tension to the ribbon-shaped rubber 100 sent out from the bobbin 18. The first tension mechanism 19 has a tension roll 22, a support shaft 23, and a support member 24. The first tension mechanism 19 is arranged between the forming drum 6 and the feeding mechanism 13.

The tension roll 22 is formed in a cylindrical shape, and is configured to receive one side surface (lower surface) of the ribbon-shaped rubber 100 sent out from the bobbin 18 via the film 107. The tension roll 22 is arranged so as to pressurize one side surface of the ribbon-shaped rubber 100 in the normal direction of the one side surface, whereby the ribbon-shaped rubber 100 can run on the tension roll 22 without loosening. ..

The tension roll 22 is rotatably supported by the support member 24 via a support shaft 23 and a bearing (not shown). In the rubber sleeve molding apparatus 1 according to the present embodiment, the central axis of the tension roll 22 is arranged parallel to the central axis L6 of the forming drum 6. Further, the support shaft 23 and the tension roll 22 are arranged on the upper side of the support member 24. Further, the lower end portion of the support member 24 is fixed to the base 11. A supply ribbon position detector 16 is arranged above the tension roll 22. Then, the tension roll 22 is wrapped with ribbon-shaped rubber at the supply ribbon side detection position Z1 described later. The first tension mechanism 19 is not limited to the above-described configuration, and may be any configuration as long as it can apply tension to the ribbon-shaped rubber 100. The ribbon-shaped rubber 100 that has passed through the tension roll 22 is sent to the transfer mechanism 14.

The passing mechanism 14 is provided for passing the ribbon-shaped rubber 100 sent toward the molding drum 6 to the molding drum 6. The passing mechanism 14 is arranged between the first tension mechanism 19 and the forming drum 6.

The transfer mechanism 14 has a transfer roll 25 and a guide unit 26 for guiding the supply of the ribbon-shaped rubber 100 to the forming drum 6, and a support mechanism 27 for supporting the transfer roll 25 and the guide unit 26.

The transfer roll 25 is arranged adjacent to the forming drum 6, and is configured so that the ribbon-shaped rubber 100 is placed along the outer periphery of the forming drum 6. The passing roll 25 is formed in a cylindrical shape. In the rubber sleeve molding apparatus 1 according to the present embodiment, the central axis of the transfer roll 25 is arranged parallel to the central axis L6 of the forming drum 6. That is, the transfer roll 25 is arranged in parallel with the forming drum 6. Further, the height position of the central axis of the passing roll 25 is arranged substantially the same as the height position of the central axis L6 of the forming drum 6.

The outer diameter of the passing roll 25 is set smaller than the outer diameter of the forming drum 6. In a plan view, the transfer roll 25, the tension roll 22 for tension, and the bobbin 18 are aligned in a straight line along the moving direction when the ribbon-shaped rubber 100 is sent from the bobbin 18 to the forming drum 6. The path through which the ribbon-shaped rubber travels from the bobbin 18 of the winding mechanism 3 via the tension roll 22 and the transfer roll 25 is configured as a ribbon supply path.

The guide unit 26 is arranged adjacent to the transfer roll 25 to guide the ribbon-shaped rubber 100 to be fed to the transfer roll 25. In the rubber sleeve molding apparatus 1 according to the present embodiment, in the orthogonal direction Y2 orthogonal to the opposite direction Y1 in which the central axis L6 of the molding drum 6 and the central axis of the transfer roll 25 face each other, the position is separated from the transfer roll 25. The guide unit 26 is arranged. Further, the guide unit 26 is located above the passing roll 25.

The support mechanism 27 is configured to displaceably support the guide unit 26 and the transfer roll 25 in the direction toward the forming drum 6 and the direction away from the forming drum 6. The support mechanism 27 is fixed to the base 11 via other members. That is, the transfer roll 25 and the guide unit 26 are fixed to the base 11 via the support mechanism 27 and other members.

The film peeling mechanism 15 is provided to peel the film 107 from the ribbon-shaped rubber 100 before the ribbon-shaped rubber 100 is wound around the molding drum 6. By providing the film peeling mechanism 15, the ribbon-shaped rubber 100 is formed when one side surface of the ribbon-shaped rubber 100 is wound on a plurality of layers along the film 107 and then wound on the molding drum 6. The 107 is wound around the molding drum 6 so as to be peeled off.

The film peeling mechanism 15 is arranged between the feeding mechanism 13 and the passing roll 25. In other words, the feeding mechanism 13, the film peeling mechanism 15, and the passing roll 25 are arranged along the facing direction Y1.

The film peeling mechanism 15 has a pulling member 30 for pulling the film 107 peeled from the ribbon-shaped rubber 100, and a second tension mechanism 31 for applying a tensile force to the film 107.

The pulling member 30 is a member having a cylindrical outer peripheral surface, and is configured to hold the film 107 in a state in which the film 107 peeled off from the ribbon-shaped rubber 100 is wound. In the rubber sleeve molding apparatus 1 according to the present embodiment, the height position of the central axis of the pulling member 30 is set to be substantially the same as the height position of the central axis of the transfer roll 25. Further, the pulling member 30 is arranged directly under the tension roll 22 of the feeding mechanism 13, whereby the winding mechanism 3 is compactly configured. A plurality of lightening holes 32 (four in the rubber sleeve molding apparatus 1 according to the present embodiment) are formed in the pulling member 30. As a result, the weight of the attracting member 30 is reduced, and the reduction of the moment of inertia of the attracting member 30 prevents a difference between the traveling speed of the ribbon-shaped rubber 100 and the traveling speed of the film 107.

The pulling member 30 is rotatably supported by the support member 24 via a support shaft 33 and a bearing (not shown). The pulling member 30 is fitted so as to be rotatable relative to the support shaft 33. In the rubber sleeve molding apparatus 1 according to the present embodiment, the central axis of the pulling member 30 is arranged parallel to the central axis L6 of the forming drum 6. Further, a support shaft 33 and a pulling member 30 are arranged at an intermediate portion in the vertical direction of the support member 24. Further, the lower end portion of the support member 24 is fixed to the base 11.

With the above configuration, the pulling member 30 rotates around the support shaft 33 when the film 107 is wound up. The film 107 that has passed through the transfer roll 25 is wound around the pulling member 30 via the second tension mechanism 31.

The second tension mechanism 31 is provided to apply a predetermined tension to the film 107 peeled from the ribbon-shaped rubber 100. The second tension mechanism 31 has a roll 34 and a support shaft 35. The second tension mechanism 31 is fixed to the base 11 via other members.

The roll 34 is arranged between the passing roll 25 and the pulling member 30. The roll 34 is formed in a cylindrical shape, and is configured to receive one side surface (lower surface) of the film 107 fed from the transfer roll 25. The roll 34 is arranged so as to pressurize one side surface of the film 107 in the normal direction of the one side surface, whereby a tensile force is applied to the film 107.

The roll 34 is rotatably supported via a support shaft 35 and a bearing (not shown). In the present embodiment, the central axis of the roll 34 is arranged parallel to the central axis L6 of the forming drum 6. The second tension mechanism 31 is not limited to the above-described configuration, and may have a configuration that can apply a tensile force to the film 107. The film 107 that has passed through the roll 34 is wound around the outer peripheral surface of the pulling member 30.

Further, the winding mechanism 3 has a power transmission mechanism 40 that connects the bobbin 18 and the pulling member 30 so as to be interlocked and rotatable with each other. The power transmission mechanism 40 is configured to rotate the pulling member 30 as the bobbin 18 rotates. In the rubber sleeve molding device 1 according to the present embodiment, the power transmission mechanism 40 is a pulley type power transmission mechanism. The power transmission mechanism 40 is arranged so as to face the bobbin 18 and the pulling member 30 via the support members 21 and 24 in a direction parallel to the axial direction X1.

The power transmission mechanism 40 includes a drive pulley 41 that receives the rotational force of the bobbin 18, a driven pulley 42 that transmits the rotational force to the pulling member 30, and an endless belt 43 wound between the pulleys 41 and 42. Have.

The drive pulley 41 is integrally rotatably connected to a support shaft 20 connected to the bobbin 18, and rotates integrally with the bobbin 18. The driven pulley 42 is integrally rotatably connected to a support shaft 33 that supports the pulling member 30, and is rotatably connected to the pulling member 30 via a slip-inducing member 44. In the rubber sleeve molding apparatus 1 according to the present embodiment, the pitch circle diameter of the drive pulley 41 is set to be larger than the pitch circle diameter of the driven pulley 42, and the rotational speed of the bobbin 18 is amplified to form the pulling member 30. It is configured to communicate.

In the rubber sleeve molding apparatus 1 according to the present embodiment, a mode in which the pitch circle diameters of the pulleys 41 and 42 are constant will be described as an example, but this may not be the case. For example, each of the pulleys 41 and 42 is composed of a variable diameter pulley whose pitch circle diameter can be changed so that the feeding speed of the ribbon-shaped rubber 100 on the bobbin 18 and the winding speed of the film 107 on the pulling member 30 are synchronized. The above pitch circle diameter may be changed. Further, the power transmission mechanism 40 may be formed by another mechanism such as a gear mechanism as long as the bobbin 18 and the pulling member 30 can be connected so as to be able to transmit power.

The slip-inducing member 44 is provided to cause a slip operation between the pull member 30 and the bobbin 18 when the torque acting between the pull member 30 and the bobbin 18 is equal to or greater than a predetermined value. In other words, the slip-inducing member 44 is relative to the attracting member 30 and the bobbin 18 in order to absorb the deviation in the rotational speed when the rotational speed is deviated between the attracting member 30 and the bobbin 18. It is provided to allow rotation.

The slip-inducing member 44 is formed by using a coil spring in the rubber sleeve molding apparatus 1 according to the present embodiment, and is fitted to the support shaft 33. One end of the slip-inducing member 44 is fixed to the support shaft 33 and rotates integrally with the support shaft 33. On the other hand, the other end of the slip-inducing member 44 is fixed to the pulling member 30 and rotates integrally with the pulling member 30.

With the above configuration, when the torque acting between the pulling member 30 and the bobbin 18 is less than a predetermined value, the driven pulley 42 and the pulling member 30 rotate integrally via the support shaft 33, thereby causing the pulling member to rotate integrally. No sliding motion occurs between the 30 and the bobbin 18. On the other hand, when the torque acting between the pulling member 30 and the bobbin 18 is equal to or greater than a predetermined value, the slip-inducing member 44 twists between the driven pulley 42 and the pulling member 30. As a result, the driven pulley 42 and the pulling member 30 rotate relative to each other, and as a result, a sliding operation occurs between the pulling member 30 and the bobbin 18.

In the bobbin 18, the distance (pitch circle radius) of the ribbon-shaped rubber 100 from the central axis of the bobbin 18 at the position where the ribbon-shaped rubber 100 is sent out becomes smaller as the ribbon-shaped rubber 100 is fed out. That is, the angular velocity of the drive pulley 41 of the power transmission mechanism 40 decreases as the ribbon-shaped rubber 100 extends. On the other hand, in the pulling member 30, the distance (pitch circle radius) of the film 107 from the central axis of the pulling member 30 at the position where the film 107 is wound increases as the winding of the film 107 progresses. That is, the angular velocity of the driven pulley 42 of the power transmission mechanism 40 increases as the ribbon-shaped rubber 100 is extended.

In this way, although the relationship between the rotation speed of the drive pulley 41 and the rotation speed of the driven pulley 42 changes, the rotation speed of each of the pulleys 41 and 42 is increased by the provision of the slip-inducing member 44. Regardless of the change in the relationship, the pulling member 30 can realize a smooth pulling operation of the film 107.

As described above, the winding ribbon position detector 12, the feeding mechanism 13, the passing mechanism 14, the film peeling mechanism 15, the power transmission mechanism 40, and the supply ribbon position detector 16 having the above configuration are provided by the base 11. It is supported so as to be integrally movable along the axial direction X1, and is moved along the axial direction X1 by the traverse mechanism 4.

With reference to FIGS. 1 and 6, the traverse mechanism 4 is configured as a portion that drives the winding mechanism 3 to move in parallel with the axial direction X1 of the forming drum 6 in synchronization with the rotation of the forming drum 6. There is. That is, the traverse mechanism 4 is a mechanism for displacing the winding mechanism 3 along the axial direction X1 of the forming drum 6, and is provided as a linear motion mechanism for displacing the base 11 along the axial direction X1. The traverse mechanism 4 has, for example, an electric motor 29 for traversing and a motion conversion mechanism such as a ball screw that converts the output rotation of the electric motor 29 into a linear displacement.

The electric motor 29 of the traverse mechanism 4 is configured by using, for example, a servomotor or a stepping motor, and can accurately control the rotational position of the output shaft of the electric motor 29. The motion conversion mechanism converts the rotational motion of the output shaft of the electric motor 29 for traverse into a linear motion along the axial direction X1 and transmits it to the base 11. As a result, the base 11 is driven.

Further, the traverse mechanism 4 is configured to control its operation based on a control command from the control device 5. Specifically, the rotational operation of the electric motor 29 is controlled via the ratio setting device 48 based on the control command from the control device 5. As a result, the driving operation of the traverse mechanism 4 is controlled, and the moving speed of the base 11, that is, the moving speed of the winding mechanism 3 is controlled.

The ratio setting device 48 is provided as, for example, a programmable controller or an electric circuit, is connected to the control device 5, and is connected to the drum rotation position detector 47 of the molding drum rotation mechanism 7 and the electric motor 29. Then, the ratio setting device 48 sets the speed ratio of the moving speed of the winding mechanism 3 in the direction parallel to the axial direction X1 of the molding drum 6 to the rotation speed of the molding drum 6 based on the control command from the control device 5. It is configured to set. Specifically, the ratio setting device 48 is based on the detection signal regarding the rotation speed of the molding drum 6 received from the drum rotation position detector 47 and the control signal regarding the speed ratio received from the control device 5, and the electric motor 29. The rotation speed command of is created and transmitted to the electric motor 29. The electric motor 29 rotates based on the rotation speed command received from the ratio setting device 48. As a result, the moving speed of the winding mechanism 3 is set to the moving speed of the speed ratio set by the control device 5 and the ratio setting device 48 with respect to the rotating speed of the molding drum 6, and the winding mechanism is set at that moving speed. 3 moves in a direction parallel to the axial direction X1 of the forming drum 6.

Further, the traverse mechanism 4 is provided with a moving position detector 49 that detects the moving position of the winding mechanism 3 by detecting the rotation position and the rotation speed of the electric motor 29 for traversing. The moving position detector 49 is provided, for example, as an encoder attached to the electric motor 29. The rotation position and rotation speed of the electric motor 29 detected by the movement position detector 49 correspond to the movement position of the winding mechanism 3. The moving position detector 49 is connected to the control device 5, and transmits a detection signal of the rotation position and the rotation speed of the electric motor 29 to the control device 5. The control device 5 sets the speed ratio of the moving speed of the winding mechanism 3 to the rotation speed of the molding drum 6, and winds at the moving speed based on the set speed ratio based on the detection signal from the moving position detector 49. The rotation of the electric motor 29 is feedback-controlled via the ratio setting device 48 so that the mechanism 3 moves. As a result, the driving operation of the traverse mechanism 4 that drives and moves the winding mechanism 3 in parallel with the axial direction X1 of the forming drum 6 is controlled in synchronization with the rotation of the forming drum 6 at a set speed ratio. By controlling the driving operation of the traverse mechanism 4, the base 11, that is, the winding mechanism 3 moves at a moving speed of a speed ratio set with respect to the rotation speed of the forming drum 6.

Further, according to the above configuration, the traverse mechanism 4 bases the ribbon-shaped rubber 100 at a moving speed synchronized with the rotation speed of the forming drum 6 at a speed ratio set in conjunction with the feeding of the ribbon-shaped rubber 100 from the feeding mechanism 13. 11 is moved along the axial direction X1. As a result, the ribbon-shaped rubber 100 supplied from the bobbin 18 supported by the base 11 to the forming drum 6 through the passing roll 25 is displaced along one of the directions parallel to the axial direction X1. Then, the ribbon-shaped rubber 100 wound around the rotating forming drum 6 is displaced along the axial direction X1 so as to be wound around the forming drum 6 along the axial direction X1. become.

The control device 5 is configured to set each setting information and control the operation of the forming drum rotation mechanism 7 and the traverse mechanism 4 based on the set various setting information. The control device 5 is configured to include a hardware processor such as a CPU, a memory, an input device in which an input operation is performed by a user when various setting information is input, an interface circuit, and the like. Further, referring to FIG. 6, the control device 5 controls the operation by reading and executing the setting information storage unit 46 composed of the memory and the program stored in the memory by the hardware processor. It is configured to include a control unit 45 for the operation.

As various setting information, the setting information storage unit 46 includes information on the rubber sleeve 101 and the type of the belt sleeve 102 including the rubber sleeve 101, information on the reference rotation speed of the molding drum 6, and per rotation of the molding drum 6. Information on the movement pitch of the winding mechanism 3 and the reference movement pitch, information on the speed ratio of the movement speed of the winding mechanism 3 to the rotation speed of the molding drum 6 and the reference speed ratio, the winding mechanism 3 Information on the reference movement speed of the ribbon-shaped rubber 100, information on the reference winding length of the ribbon-shaped rubber 100 supplied from the winding mechanism 3 to the forming drum 6 and wound around the forming drum 6, and the winding ribbon. Information on the reference position of the ribbon-shaped rubber 100 detected by the position detector 12, information on the reference position of the ribbon-shaped rubber 100 detected by the supply ribbon position detector 16, and the rotation speed of the molding drum 6. It is configured to store information regarding the frequency of changing the speed ratio of the moving speed of the winding mechanism 3 with respect to the wind speed.

The control unit 45 operates the molding drum rotation mechanism 7 and the traverse mechanism 4 based on the information stored in the setting information storage unit 46 and the detection signals from the drum rotation position detector 47 and the movement position detector 49. It is configured to control. Further, the control unit 45 detects the information stored in the setting information storage unit 46, the detection signals from the drum rotation position detector 47 and the movement position detector 49, and the winding ribbon position detection included in the ribbon position detector 70. Based on the detection signals from the vessel 12 and the supply ribbon position detector 16, control is configured to adjust the deviation generated when the ribbon-shaped rubber 100 is wound around the forming drum 6. More specifically, the control unit 45 determines the rotation speed of the molding drum 6 based on the information stored in the setting information storage unit 46 and the detection signals from the detectors (47, 49, 12, 16). The drive operation of the traverse mechanism 4 is controlled so as to change the speed ratio of the moving speed of the winding mechanism 3 with respect to the drum 6, and the deviation generated when the ribbon-shaped rubber 100 is wound around the forming drum 6 is adjusted. Has been done.

FIG. 7 is an enlarged view showing a part of the molding drum 6, showing a state in which the ribbon-shaped rubber is wound around the molding drum 6. The winding ribbon position detector 12 included in the ribbon position detector 70 and the control unit 45 based on the detection signal from the supply ribbon position detector 16 adjust the deviation generated when the ribbon-shaped rubber 100 is wound around the forming drum 6. Control is done. Then, for this control, as shown in FIGS. 1, 6 and 7, in the rubber sleeve molding apparatus 1, the supply ribbon position detector 16 is arranged above the tension roll 22 and the winding ribbon position. The detector 12 is arranged above the molding drum 6. Further, for the above control by the control unit 45, in the rubber sleeve molding apparatus 1, as shown in FIGS. 6 and 7, the winding original position O, the supply ribbon side detection position Z1, and the winding ribbon side detection position Z2, is set. Information regarding the setting of the winding original position O, information regarding the setting of the supply ribbon side detection position Z1, and information regarding the setting of the winding ribbon side detection position Z2 are stored in the setting information storage unit 46 and read by the control unit 45. It is taken out and used in the control for adjusting the deviation generated when the ribbon-shaped rubber 100 is wound around the forming drum 6.

The winding original position O is defined and set as a position on the molding drum 6 where the ribbon-shaped rubber 100 starts to wind around the outer circumference of the rotating molding drum 6. More specifically, with reference to FIG. 7, the winding original position O is in a direction parallel to the axial direction X1 of the forming drum 6 and on the side opposite to the moving direction X2 of the winding mechanism 3 in the ribbon-shaped rubber 100. It is set as the position of the side part.

The supply ribbon side detection position Z1 is defined and set as a predetermined position on the ribbon supply path 28 that traces the ribbon supply path 28 upstream from the winding original position O. More specifically, in the rubber sleeve molding apparatus 1 according to the present embodiment, the supply ribbon side detection position Z1 is a tension roll 22 on which the supply ribbon position detector 16 is arranged above on the ribbon supply path 28. Is set as a position where the ribbon-shaped rubber 100 comes into contact with each other. The supply ribbon side detection position Z1 moves in a direction parallel to the axial direction X1 of the molding drum 6 on the upstream side of the ribbon supply path 28 while the ribbon-shaped rubber 100 is wound around the molding drum 6. At the supply ribbon side detection position Z1, the supply ribbon position detector 16 detects the amount of deviation of the ribbon-shaped rubber 100 on the tension roll 22 in the direction parallel to the axial direction X1 of the ribbon-shaped rubber 100. The position of is detected. The ribbon supply path 28 is a path in which the ribbon-shaped rubber 100 is supplied from the winding mechanism 3 to the forming drum 6 with reference to FIGS. 1 and 6.

The winding ribbon side detection position Z2 is along the winding direction of the ribbon-shaped rubber 100 adjacent to the winding original position O in a direction parallel to the axial direction X1 of the forming drum 6 from the winding original position O. Moreover, it is defined and set as a predetermined position on the forming drum 6 that goes back along the direction opposite to the rotation direction R6 of the forming drum 6. The winding ribbon side detection position Z2 is a position on the molding drum 6 where the winding ribbon position detector 12 is arranged upward, and is a position where the ribbon-shaped rubber 100 is wound on the molding drum 6 and from now on. The position of the boundary with the position where the supplied ribbon-shaped rubber 100 is wound is set. The winding ribbon side detection position Z2 moves on the molding drum 6 in a direction parallel to the axial direction X1 of the molding drum 6 while the ribbon-shaped rubber 100 is wound around the molding drum 6. At the winding ribbon side detection position Z2, the winding ribbon position detector 12 detects the amount of deviation of the ribbon-shaped rubber 100 at a predetermined position on the outer periphery of the forming drum 6 in a direction parallel to the axial direction X1 of the forming drum 6. The position of the ribbon-shaped rubber 100 for is detected.

Further, referring to FIG. 6, in the rubber sleeve molding apparatus 1, the distance A1 from the winding original position O to the supply ribbon side detection position Z1 and the distance from the winding original position O to the winding ribbon side detection position Z2. The distance A2 is set to the same distance. For example, in the rubber sleeve molding apparatus 1, the distance A1 and the distance A2 are set to about 230 mm. Since the distance A1 and the distance A2 are set to the same distance, the winding ribbon side detection position Z2 is expected that the ribbon-shaped rubber 100 currently at the supply ribbon side detection position Z1 is wound around the molding drum 6 after a lapse of a predetermined time. It becomes the position corresponding to the position of.

Further, the control unit 5 has a deviation amount calculation unit 50, an adjustment movement pitch calculation unit 51, and a drive control unit 52 with reference to FIG.

The deviation amount calculation unit 50 winds the ribbon-shaped rubber 100 around the forming drum 6 based on the detection results (detection signals) of the winding ribbon position detector 12 and the supply ribbon position detector 16 included in the ribbon position detector 70. It is configured to calculate the amount of deviation that occurs at this time. That is, the position of the ribbon-shaped rubber 100 is detected by the winding ribbon position detector 12 and the supply ribbon position detector 16, and the deviation amount calculation unit 50 calculates the deviation amount based on the detection result. Therefore, the above deviation amount is calculated by the position detection of the ribbon-shaped rubber 100 by the winding ribbon position detector 12 and the supply ribbon position detector 16 included in the ribbon position detector 70 and the calculation by the deviation amount calculation unit 50. By being done, it is detected.

The reference movement pitch P and the reference ribbon rubber 100S are defined in the calculation of the deviation amount generated when the ribbon-shaped rubber 100 is wound around the forming drum 6 by the deviation amount calculation unit 50.

The reference movement pitch P is the movement pitch of the winding mechanism 3 per rotation of the molding drum 6 when the ribbon-shaped rubber 100 having a predetermined width is wound around the molding drum 6, and is defined as the movement pitch corresponding to the predetermined width. .. The predetermined width of the ribbon-shaped rubber 100 is the width dimension when it is assumed that the ribbon-shaped rubber 100 has the same constant width dimension over the entire length and there is no change in the width dimension.

The reference ribbon rubber 100S supplies the ribbon-shaped rubber 100 having a predetermined width along the ribbon supply path 28 without meandering, and moves the winding mechanism 3 based on the reference movement pitch P to wind the ribbon-shaped rubber 100 around the molding drum 6. It is defined as a ribbon-shaped rubber 100 (virtual ribbon-shaped rubber 100) for hanging. In FIG. 7, the ribbon-shaped rubber 100 having a predetermined width is supplied from the supply path 28 without meandering from the start of winding to the forming drum 6 to the middle, and is wound around the forming drum 100 at the reference movement pitch P. It is illustrated. Then, in FIG. 7, the width dimension of the ribbon-shaped rubber 100 fluctuates from the middle after the start of winding around the molding drum 6, and the width dimension is different from that of the reference ribbon rubber 100S shown by the alternate long and short dash line in FIG. The reduced state is illustrated. Further, in FIG. 7, with respect to the position of the virtual reference ribbon rubber 100S when it is assumed that the actual ribbon-shaped rubber 100 passing over the tension roll 22 and being supplied to the forming drum 7 does not meander. , The state of meandering in the moving direction X2 of the winding mechanism 3 is illustrated.

The deviation amount calculation unit 50 is the axial direction X1 of the molding drum 6 with respect to the position of the reference ribbon rubber 100S based on the detection results of the winding ribbon position detector 12 and the supply ribbon position detector 16 included in the ribbon position detector 70. The amount of deviation of the actual position of the ribbon-shaped rubber 100 in the direction parallel to is calculated. Specifically, the deviation amount calculation unit 50 determines the deviation amount on the winding ribbon side as the deviation amount of the actual position of the ribbon-shaped rubber 100 in the direction parallel to the axial direction X1 of the molding drum 6 with respect to the position of the reference ribbon rubber 100S. The a and the deviation amount b on the supply ribbon side are calculated.

The amount of deviation a on the winding ribbon side is calculated as the amount of deviation of the actual position of the ribbon-shaped rubber 100 with respect to the position of the reference ribbon rubber 100S at the winding ribbon side detection position Z2. The winding ribbon side deviation amount a is a reference at the winding ribbon side detection position Z2 based on the detection result of the position of the ribbon-shaped rubber 100 detected by the winding ribbon position detector 12 at the winding ribbon side detection position Z2. It is calculated as the amount of deviation of the actual position of the ribbon-shaped rubber 100 with respect to the position of the ribbon rubber 100S. More specifically, the winding ribbon side deviation amount a calculated based on the detection result of the winding ribbon position detector 12 is parallel to the axial direction X1 of the molding drum 6 at the winding ribbon side detection position Z2. In the direction, the position of the side surface portion of the winding mechanism 3 on the moving direction X2 side of the reference ribbon rubber 100S and the side surface portion of the winding mechanism 3 on the moving direction X2 side of the actual ribbon-shaped rubber 100 wound around the molding drum 6. It is calculated as the amount of deviation from the position of. Note that FIG. 7 illustrates a state in which the winding ribbon side deviation amount a occurs due to the actual width dimension of the ribbon-shaped rubber 100 fluctuating so as to become smaller.

The supply ribbon side deviation amount b is calculated as the deviation amount of the actual position of the ribbon-shaped rubber 100 with respect to the position of the reference ribbon rubber 100S at the supply ribbon side detection position Z1. The supply ribbon side deviation amount b is the position of the reference ribbon rubber 100S at the supply ribbon side detection position Z1 based on the detection result of the position of the ribbon-shaped rubber 100 detected by the supply ribbon position detector 16 at the supply ribbon side detection position Z1. It is calculated as the amount of deviation of the actual position of the ribbon-shaped rubber 100 with respect to. More specifically, the supply ribbon side deviation amount b calculated based on the detection result of the supply ribbon position detector 16 is a direction parallel to the axial direction X1 of the molding drum 6 at the supply ribbon side detection position Z1. The position of the side surface portion on the side opposite to the moving direction X2 side of the winding mechanism 3 in the reference ribbon rubber 100S, and the side opposite to the moving direction X2 side of the winding mechanism 3 in the actual ribbon-shaped rubber 100 wound around the molding drum 6. It is calculated as the amount of deviation from the position of the side surface of. In FIG. 7, the actual ribbon-shaped rubber 100 that has passed over the tension roll 22 and is being supplied to the forming drum 7 meanders in the moving direction X2 side of the winding mechanism 3, so that the supply ribbon side shifts. The state in which the quantity b is generated is illustrated.

The adjustment movement pitch calculation unit 51 calculates the adjustment movement pitch P1 derived by adjusting the reference movement pitch P based on the deviation amount calculated by the deviation amount calculation unit 50. Specifically, the adjustment movement pitch P1 derived by adjusting the reference movement pitch P based on the winding ribbon side deviation amount a and the supply ribbon side deviation amount b is calculated.

The drive control unit 52 changes the speed ratio between the rotation speed of the forming drum 6 and the movement speed of the winding mechanism 3 based on the adjustment movement pitch P1 calculated by the adjustment movement pitch calculation unit 51. Control the drive operation of 4. The drive control unit 52 changes the speed ratio of the movement speed of the winding mechanism 3 to the rotation speed of the forming drum 6 based on the adjustment movement pitch P1 at a predetermined control cycle, and controls the drive operation of the traverse mechanism 4. To do. That is, the predetermined control cycle is the frequency at which the speed ratio of the moving speed of the winding mechanism 3 to the rotation speed of the molding drum 6 is changed.

Then, the drive control unit 52 calculates and sets the above speed ratio based on the adjustment movement pitch P1 for each predetermined control cycle, and transmits a control command of the set speed ratio to the ratio setting device 48. The ratio setting device 48 moves the moving speed of the winding mechanism 3 based on the detection result of the rotation speed of the molding drum 6 received from the drum rotation position detector 47 and the speed ratio control command received from the drive control unit 52. The rotation speed of the electric motor 29 of the traverse mechanism 4 corresponding to the above is calculated, and a control command of the rotation speed is transmitted to the electric motor 29. The drive operation of the traverse mechanism 4 is controlled by rotating the electric motor 29 based on the control command from the ratio setting device 48, and the winding mechanism 3 moves at a moving speed based on the speed ratio set by the drive control unit 52. Move with. These control operations are performed at each of the above-mentioned predetermined control cycles. Therefore, the speed ratio of the moving speed of the winding mechanism 3 to the rotating speed of the forming drum 6 is changed every moment at a predetermined control cycle based on the adjusted moving pitch P1. Then, the driving operation of the traverse mechanism 4 is controlled every moment at a predetermined control cycle, and the moving speed of the winding mechanism 3 is controlled so as to change according to the adjustment movement pitch P1.

[Rubber sleeve molding method]
Next, a method of molding the rubber sleeve according to the present embodiment will be described. The rubber sleeve molding method of the present embodiment is configured as a method of molding the rubber sleeve 101 constituting the belt sleeve 102 used as the material of the transmission belt, and is configured as a rubber sleeve molding step in the transmission belt manufacturing process. .. Hereinafter, the outline of the transmission belt manufacturing method will be described first, and the rubber sleeve molding method of the present embodiment implemented as the rubber sleeve molding step in the transmission belt manufacturing process will be described. As a transmission belt manufactured by using the belt sleeve 102 including the rubber sleeve 101 as a component, the toothed belt W1 shown in FIG. 5 will be described as an example.

When manufacturing the toothed belt W1, first, in the rubber sleeve molding apparatus 1 described above, the ribbon-shaped rubber 100 is spirally wound around the outer periphery of the molding drum 6 in a plurality of circumferences, and the unvulcanized rubber sleeve 101. Is molded, thereby forming an unvulcanized belt sleeve 102 having a rubber sleeve 101 as a constituent element. Then, the unvulcanized belt sleeve 102 is vulcanized and cut to produce a toothed belt W1 as shown in FIG. The toothed belt W1 includes a core wire 91, a belt back portion 92 in which the core wire 91 is embedded, a plurality of tooth portions 93 arranged on the belt back portion 92 along the length direction of the belt, and the tooth portions 93 and teeth. It has a tooth bottom portion 94 provided between the portion 93 and a tooth cloth 95 coated on the tooth bottom portion 94 and the tooth portion 93.

The back portion 92 and the tooth portion 93 of the toothed belt W1 are configured as rubber-like portions. For example, the rubber composition contains natural rubber, styrene-butadiene rubber, and nitrile rubber as main components, as well as chloroprene rubber. Alternatively, hydride nitrile rubber having heat aging resistance, chloroprene rubber, chlorosulfonated polyethylene (CSM), alkylated chlorosulfonated polyethylene (ACSM) and the like are used. In these rubber compositions, for example, carbon black, zinc oxide, stearic acid, plasticizer, anti-aging agent and the like are used as compounding agents. Further, as the vulcanizing agent blended in the rubber composition, for example, sulfur, organic peroxide and the like are used. The compounding agent and the vulcanizing agent are not limited to these.

When the toothed belt W1 is manufactured, first, the raw material rubber is rolled. In this rolling process, a ribbon-shaped rubber 100 having a width shorter than the width of the rubber sleeve 101 is formed. The ribbon-shaped rubber 100 may be formed by forming a sheet having a width larger than the width of the ribbon-shaped rubber 100 by rolling and cutting the sheet at predetermined width intervals.

Next, the ribbon-shaped rubber 100 formed into a strip shape by rolling is wound around the bobbin 18 by a predetermined length. Then, the ribbon-shaped rubber 100 wound around the bobbin 18 for a predetermined length is cut from the ribbon-shaped rubber 100 extending from the rolling mill.

FIG. 8 is a partial cross-sectional view schematically showing a state in which the ribbon-shaped rubber 100 is wound around the molding drum 6. Note that FIG. 8 illustrates a cross-sectional state when the belt sleeve 102, which is the material of the toothed belt W1 and includes the rubber sleeve 101 as a component, is molded, and has a ribbon-shaped rubber on the outer periphery of the molding drum 6. The form of the belt sleeve 102 in which the tooth cloth 95 and the core wire 91 are wound in addition to the rubber sleeve 101 formed by winding the 100 is illustrated. Further, a tooth portion forming portion 60 for forming the tooth portion 93 of the toothed belt W1 is formed on the outer peripheral surface of the forming drum 6, and the tooth portion forming portion 60 is parallel to the axial direction X1 of the forming drum 6. It is formed in a groove shape so as to extend in various directions. With reference to FIG. 8, when the belt sleeve 102, which is the material of the toothed belt W1 and includes the rubber sleeve 100 as a component, is molded, first, the tooth cloth 95 is installed on the outer periphery of the molding drum 6. ..

Next, a spinning step is performed in which the core wire 91 is wound around the outer circumference of the tooth cloth 95. In the spinning step, the core wire 91 is spirally wound around the tooth cloth 95 as the tooth cloth 95 is rotated by the forming drum 6.

Next, the rubber sleeve 101 is formed by spirally winding the ribbon-shaped rubber 100 around the outer peripheral portion of the core wire 91. This completes the molding of the unvulcanized belt sleeve 102. In the present embodiment, as a step of molding the rubber sleeve 101 in the belt sleeve 102, which is formed by winding the ribbon-shaped rubber 100 together with the tooth cloth 95 and the core wire 91 in a single layer around the forming drum 6, the rubber sleeve of the present embodiment is formed. The embodiment in which the molding method of the above is carried out is described as an example. The rubber sleeve of the present embodiment is a step of further winding the ribbon-shaped rubber 100 on the rubber sleeve 101 wound around the outer periphery of the molding drum 6 together with the tooth cloth 95 and the core wire 91 to form the rubber sleeve 101 having a plurality of layers. The molding method of may be carried out.

Next, the belt sleeve 102 is vulcanized while the unvulcanized belt sleeve 102 is held by the forming drum 6. As a result, the rubber portion of the unvulcanized belt sleeve 102 is vulcanized, and as a result, the vulcanized belt sleeve 102 is formed. At the time of vulcanization, the tooth portion forming portion 60 (tooth portion 93 side) is filled with unvulcanized rubber from the gap of the core wire 91, and the tooth portion 93 of the toothed belt W1 is formed.

After the belt sleeve 102 is vulcanized and the vulcanized belt sleeve 102 is demolded from the molding drum 6, a cutting step is performed. In the cutting step, the belt sleeve 102 after vulcanization is cut at predetermined intervals along the circumferential direction of the belt sleeve 102 by a cutting device (not shown). As a result, the toothed belt W1 as a transmission belt is completed.

Further, in the step of winding the ribbon-shaped rubber 100 for molding each of the sleeves described above, the molding drum 6 is wound from one end side to the other end side of the molding drum 6, and then from the other end side. The ribbon-shaped rubber 100 may be wound in two layers by winding it toward the original end side. Further, the ribbon-shaped rubber 100 may be wound in a plurality of layers by repeating the winding operation.

Next, the rubber sleeve molding method of the present embodiment, which is carried out as a rubber sleeve molding step in the transmission belt manufacturing process, will be described in more detail.

The rubber sleeve molding method of the present embodiment is carried out by operating the rubber sleeve molding device 1 described above. Then, in the method of molding the rubber sleeve of the present embodiment, the ribbon-shaped rubber 100 is driven by the traverse mechanism 4 and moves in parallel with the axial direction X1 of the molding drum 6 in synchronization with the rotation of the molding drum 6. Is wound around the molding drum 6 along the ribbon supply path 28, and the ribbon-shaped rubber 100 is spirally wound around the outer periphery of the molding drum 6 in a plurality of times, so that the unvulcanized rubber sleeve 101 is included as a component. It is configured as a method for molding a rubber sleeve for molding the belt sleeve 102.

In the present embodiment, the thickness of the ribbon-shaped rubber 100 wound around the molding drum 6 can be 0.5 mm to 3.5 mm, and 0.5 mm to 2.0 mm can be exemplified. Further, the width of the ribbon-shaped rubber 100 can be exemplified by 10 mm to 50 mm. Further, as the width of the unvulcanized rubber sleeve 101, 600 mm to 1200 mm can be exemplified. Further, in the present embodiment, the width of the ribbon-shaped rubber 100 is set to less than 1/10 of the width of the unvulcanized rubber sleeve 101.

In the molding of the unvulcanized rubber sleeve 101, the worker first pulls out one end of the ribbon-shaped rubber 100 from the bobbin 18 and passes it to the molding drum 6 via the transfer roll 25, and further, the one end is passed. It is fixed to the molding drum 6. Further, the worker peels the film 107 from the ribbon-shaped rubber 100 on the transfer roll 25, and fixes one end of the film 107 to the pulling member 30.

From this state, the method for molding the rubber sleeve of the present embodiment is started. FIG. 9 is a flowchart showing a method of molding a rubber sleeve according to the present embodiment. When the method of forming the rubber sleeve of the present embodiment is started, the driving of the forming drum rotation mechanism 7 and the traverse mechanism 4 is started based on the control of the control unit 45, and the ribbon-shaped rubber 100 is wound around the forming drum 6. The operation is started (step S1). When the winding operation of the ribbon-shaped rubber 100 around the molding drum 6 is started based on the control of the control unit 45, the molding drum 6 rotates, and the rotation of the molding drum 6 attracts the ribbon-shaped rubber 100 to the molding drum 6. It is wound around the forming drum 6. Further, due to the operation of the traverse mechanism 4, the transfer roll 25 of the winding mechanism 3 is displaced along the axial direction X1 at a speed based on the control command from the control unit 5 as the winding mechanism 3 moves. , The ribbon-shaped rubber 100 is spirally wound while being pressed against the forming drum 6 by the passing roll 25. At this time, the bobbin 18 and the pulling member 30 rotate in conjunction with each other by the power transmission mechanism 40. Then, in the transfer roll 25, the ribbon-shaped rubber 100 and the film 107 are peeled off, and the film 107 is wound around the pulling member 30.

When the ribbon-shaped rubber 100 is wound around the forming drum 6 or the like in the above step, the ribbon-shaped rubber 100 to be wound around the forming drum 6 is serpentine and the width dimension is changed, so that the ribbon-like rubber 100 is adjacent in a direction parallel to the axial direction X1. The rubbers 100 may overlap each other in the radial direction of the forming drum 6 or may be wound with a gap. In this case, the toothed belt W1 after vulcanization may be partially bulged or the arrangement of the core wires may be biased, resulting in quality deterioration. Therefore, it is necessary to spirally wind the ribbon-shaped rubber 100 on the forming drum in a state where the side surfaces of the ribbon-shaped rubber 100 adjacent to each other in the direction parallel to the axial direction X1 are butted against each other. Therefore, in the rubber sleeve molding method of the present embodiment, the ribbon-shaped rubber 100 is continuously wound around the molding drum 6 from the start (step S1) to the end of the winding operation. At predetermined control cycles, control is performed to adjust the moving speed of the winding mechanism 3 with respect to the rotation speed of the forming drum 6 according to the amount of deviation of the position of the ribbon-shaped rubber. Due to this control, in the method of molding the rubber sleeve of the present embodiment, the ribbon-shaped rubber 100 wound around the molding drum 6 will meander when it fluctuates from a predetermined width, or when the ribbon-shaped rubber is wound around the molding drum 6. Even in this case, the moving speed of the winding mechanism 3 with respect to the rotation speed of the molding drum 6 is adjusted according to the amount of deviation of the actual position of the ribbon-shaped rubber 100 with respect to the position of the reference ribbon rubber 100S, and the ribbon-shaped rubber 100 Overlapping and generation of gaps between the ribbon-shaped rubbers 100 are suppressed.

With reference to FIG. 9, the rubber sleeve molding method of the present embodiment includes a displacement amount detection step (step S2), an adjustment movement pitch calculation step (step S3), and a drive control step (step S4). It is configured. In the rubber sleeve molding method of the present embodiment, the displacement amount detection step (step S2), the adjustment movement pitch calculation step (step S3), and the drive control step (step S4) are performed to rotate the molding drum 6. Control is performed to adjust the moving speed of the winding mechanism 3 with respect to the speed according to the amount of deviation of the position of the ribbon-shaped rubber 100.

When the operation of winding the ribbon-shaped rubber 100 around the forming drum 6 is started (step S1), the forming drum 6 rotates and the traverse mechanism 4 operates to wind the ribbon-shaped rubber 100 around the outer periphery of the forming drum 6. The operation continues. Then, while the operation of winding the ribbon-shaped rubber 100 around the outer circumference of the forming drum 6 is continuing, the deviation amount detection step (step S2), the adjustment movement pitch calculation step (step S3), and the drive control step (step S4) are performed. However, it is repeated every predetermined control cycle. The predetermined control cycle is set to, for example, 0.1 seconds. That is, in the present embodiment, the execution frequency of controlling the speed of the traverse mechanism 4 with respect to the forming drum 6 is every 0.1 seconds.

In each control cycle during which the ribbon-shaped rubber 100 is wound around the forming drum 6, a deviation amount detection step (step S2), an adjustment movement pitch calculation step (step S3), and a drive control step (step S4) are performed. Then, the control unit 5 determines whether or not it is necessary to end the winding operation (step S5). In step S5, it is determined whether or not the ribbon-shaped rubber 100 wound around the molding drum 6 has reached the set winding length. When it is determined that the set winding length has not been reached (steps S5 and No), the deviation amount detection step (step) while the winding operation of the ribbon-shaped rubber 100 around the forming drum 6 is continued. S2), the adjustment movement pitch calculation step (step S3), and the drive control step (step S4) are repeated. On the other hand, when it is determined that the set winding length has been reached (step S5, Yes), the winding operation of the ribbon-shaped rubber 100 around the forming drum 6 is completed, and the winding operation is completed. As a result, the operation of winding the ribbon-shaped rubber 100 around the outer periphery of the forming drum 6 is performed until the ribbon-shaped rubber 100 for the set winding length is wound around the forming drum 6, and covers the entire width of the rubber sleeve 101. This is done until the ribbon-shaped rubber 100 having a length is wound around the molding drum 6.

Hereinafter, the displacement amount detection step (step S2), the adjustment movement pitch calculation step (step S3), and the drive control step (step S4) in the rubber sleeve molding method of the embodiment will be described in more detail.

In the deviation amount detection step (step S2), the deviation amount of the actual position of the ribbon-shaped rubber 100 in the direction parallel to the axial direction X1 of the forming drum 6 with respect to the position of the reference ribbon rubber 100S is detected. Specifically, in the shift amount detection step (step S2), the actual position of the ribbon-shaped rubber 100 in the direction parallel to the axial direction X1 of the molding drum 6 with respect to the position of the reference ribbon rubber 100S at the supply ribbon side detection position Z1. The supply ribbon side deviation amount b, which is the deviation amount from the above, is detected (steps S21 to S23). In parallel, the winding ribbon is the amount of deviation from the actual position of the ribbon-shaped rubber 100 in the direction parallel to the axial direction X1 of the molding drum 6 with respect to the position of the reference ribbon rubber 100S at the winding ribbon side detection position Z2. The amount of lateral displacement a is also detected (steps S24 to S26).

FIG. 10 is an enlarged view schematically showing the supply ribbon side detection position Z1 in the rubber sleeve molding apparatus 1. Note that FIG. 10A schematically shows a state in which the position of the ribbon-shaped rubber 100 is actually detected at the supply ribbon side detection position Z1. Further, FIG. 10B schematically shows a state in which the position of the reference ribbon rubber 100S is detected when it is assumed that the virtual reference ribbon rubber 100S exists at the supply ribbon side detection position Z1.

In the steps (steps S21 to S23) in which the supply ribbon side deviation amount b is detected in the deviation amount detection step (step S2), the supply ribbon position detector 16 and the control unit 45 perform steps S21, step S22, and step S23. Each step is performed.

With reference to FIG. 10A, first, the supply ribbon position detector 16 moves the winding mechanism 3 in the actual ribbon-shaped rubber 100 supplied to the forming drum 6 at the supply ribbon side detection position Z1 in the moving direction X2. The position of the side surface portion on the opposite side to the side (hereinafter referred to as the supply ribbon side surface position Sb) is detected in the direction parallel to the axial direction X1 of the forming drum 6 (step S21). Then, the detection signal of the supply ribbon side surface position Sb detected by the supply ribbon position detector 16 is transmitted from the supply ribbon position detector 16 to the control unit 45 (step S22).

Further, the setting information storage unit 46 of the control device 5 stores information regarding the position of the reference ribbon rubber 100S detected when it is assumed that the virtual reference ribbon rubber 100S exists at the supply ribbon side detection position Z1. There is. Specifically, referring to FIG. 10B, it is assumed that the virtual reference ribbon rubber 100S exists at the supply ribbon side detection position Z1 in the setting information storage unit 46, and the molding drum 6 Information on the position of the side surface portion of the reference ribbon rubber 100S on the side opposite to the moving direction X2 side (hereinafter, referred to as the supply ribbon side surface reference position Sb0) in the direction parallel to the axial direction X1 is stored.

When the control unit 45 receives the detection signal of the supply ribbon side surface position Sb from the supply ribbon position detector 16 (step S22), the control unit 45 reads the information of the supply ribbon side surface reference position Sb0 from the setting information storage unit 46. Then, the control unit 45 calculates the supply ribbon side deviation amount b based on the supply ribbon side surface reference position Sb0 and the supply ribbon side surface position Sb (step S23). Specifically, the supply ribbon side deviation amount b is calculated as the difference between the supply ribbon side surface reference position Sb0 and the supply ribbon side surface position Sb. That is, the supply ribbon side deviation amount b is calculated by the following equation (1).
b = Sb0-Sb ... (1)
By calculating the supply ribbon side deviation amount b in step S23, the detection of the supply ribbon side deviation amount b in the deviation amount detection step (step S2) is completed.

In the step of detecting the amount of deviation b on the supply ribbon side (steps S21 to S23) in the amount of deviation detection step (step S2), the ribbon-shaped rubber 100 tensions the amount of deviation b on the supply ribbon side at the supply ribbon side detection position Z1. It is detected in a state where the ribbon-shaped rubber 100 is wound around the roll 22 and tension is applied to the ribbon-shaped rubber 100. Further, in the detection step (steps S21 to S23) of the supply ribbon side deviation amount b in the deviation amount detection step (step S2), the supply ribbon side deviation amount b is used by using the supply ribbon position detector 16 configured as a laser scanner. Is detected.

FIG. 11 is an enlarged view schematically showing the winding ribbon side detection position Z2 in the rubber sleeve molding apparatus 1. Note that FIG. 11A schematically shows a state in which the position of the ribbon-shaped rubber 100 is actually detected at the winding ribbon side detection position Z2. Further, FIG. 11B schematically shows a state in which the position of the reference ribbon rubber 100S is detected when it is assumed that the virtual reference ribbon rubber 100S exists at the winding ribbon side detection position Z2.

In the step (steps S24 to S26) in which the winding ribbon side deviation amount a is detected in the deviation amount detection step (step S2), the winding ribbon position detector 12 and the control unit 45 perform steps S24, step S25, and step. Each step of S26 is performed.

With reference to FIG. 11A, first, the winding ribbon position detector 12 of the winding mechanism 3 in the actual ribbon-shaped rubber 100 wound around the forming drum 6 at the winding ribbon side detection position Z2. The position of the side surface portion on the moving direction X2 side (hereinafter referred to as the winding ribbon side surface position Sa) is detected in the direction parallel to the axial direction X1 of the forming drum 6 (step S24). Then, the detection signal of the winding ribbon side surface position Sa detected by the winding ribbon position detector 12 is transmitted from the winding ribbon position detector 12 to the control unit 45 (step S25).

Further, the setting information storage unit 46 of the control device 5 stores information regarding the position of the reference ribbon rubber 100S detected when it is assumed that the virtual reference ribbon rubber 100S exists at the winding ribbon side detection position Z2. ing. Specifically, referring to FIG. 11B, the molding drum 6 is assumed to exist in the setting information storage unit 46 at the detection position Z2 on the winding ribbon side, assuming that the virtual reference ribbon rubber 100S exists. Information on the position of the side surface portion of the winding mechanism 3 on the moving direction X2 side of the reference ribbon rubber 100S (hereinafter, referred to as the winding ribbon side surface reference position Sa0) in the direction parallel to the axial direction X1 is stored.

When the control unit 45 receives the detection signal of the winding ribbon side surface position Sa from the winding ribbon position detector 12 (step S25), the control unit 45 reads out the information of the winding ribbon side surface reference position Sa0 from the setting information storage unit 46. Then, the control unit 45 calculates the winding ribbon side deviation amount a based on the winding ribbon side surface reference position Sa0 and the winding ribbon side surface position Sa (step S26). Specifically, the winding ribbon side deviation amount a is calculated as the difference between the winding ribbon side surface reference position Sa0 and the winding ribbon side surface position Sa. That is, the winding ribbon side deviation amount a is calculated by the following equation (2).
a = Sa0-Sa ... (2)
By calculating the winding ribbon side deviation amount a in step S26, the detection of the winding ribbon side deviation amount a in the deviation amount detection step (step S2) is completed.

In the step of detecting the amount of deviation a on the winding ribbon side (steps S24 to S26) in the deviation amount detection step (step S2), the winding ribbon side is used by using the winding ribbon position detector 12 configured as a laser scanner. The amount of deviation a is detected.

When the winding ribbon side deviation amount a and the supply ribbon side deviation amount b are detected in the deviation amount detection step (step S2), the adjustment movement pitch calculation step (step S3) is then performed. In the adjustment movement pitch calculation step (step S3), the control unit 45 calculates the adjustment movement pitch P1 derived by adjusting the reference movement pitch P based on the deviation amount detected in the deviation amount detection step (step S2). To do. That is, in the adjustment movement pitch calculation step (step S3), the control unit 45 adjusts and derives the reference movement pitch P based on the winding ribbon side deviation amount a and the supply ribbon side deviation amount b. Calculate P1.

The adjustment movement pitch P1 is calculated from the reference movement pitch P by both the pitch correction amount a'based on the winding ribbon side deviation amount a and the pitch correction amount b'based on the supply ribbon side deviation amount b ( It is calculated by modifying a'and b'). The pitch correction amount a'based on the winding ribbon side deviation amount a is defined as a positive value when the width of the ribbon-shaped rubber 100 is smaller than the predetermined width, and the pitch correction amount based on the supply ribbon side deviation amount b is defined. When the minute b'is defined as a positive value when the ribbon-shaped rubber 100 meanders in the movement direction X2 side of the winding mechanism 3, the adjustment movement pitch P1 is the pitch correction portion a'from the reference movement pitch P. It is calculated by subtracting and the pitch correction amount b'. That is, the adjustment movement pitch P1 is calculated by the following equation (3).
P1 = P-a'-b'... (3)

The pitch correction amount a'based on the winding ribbon side deviation amount a and the pitch correction amount b'based on the supply ribbon side deviation amount b are the distance from the winding original position O to the position where the deviation amount is detected and the forming drum. It is obtained by converting the winding ribbon side deviation amount a and the supply ribbon side deviation amount b into the deviation amount corresponding to the pitch based on the relationship with the peripheral length of the outer circumference of 6. Here, the distance A1 from the winding original position O to the supply ribbon side detection position Z1 where the supply ribbon side deviation amount b is detected, and the winding ribbon side deviation amount a from the winding original position O is detected. The distance A2 to the ribbon side detection position Z2 is set to the same distance. Let A be the values of distance A1 and distance A2, which are the same distance. Then, let D be the dimension of the diameter of the forming drum 6. Then, the peripheral length of the outer circumference of the molding drum 6 becomes πD (pi π × diameter D). Therefore, the pitch correction amount a'based on the winding ribbon side deviation amount a is the distance A between the winding ribbon side detection position Z2 where the winding ribbon side deviation amount a is detected and the winding original position O, and the forming drum. It is obtained from the relationship with the peripheral length πD of No. 6 and is obtained by the following equation (4). The pitch correction amount b'based on the supply ribbon side deviation amount b is the distance A between the supply ribbon side detection position Z1 where the supply ribbon side deviation amount b is detected and the winding original position O, and the outer circumference of the molding drum 6. It is obtained from the relationship with the circumference πD, and is obtained by the following equation (5).
a'= a × (πD / A) ... (4)
b'= b × (πD / A) ... (5)

Therefore, from the above equations (3), (4), and (5), the adjustment movement pitch P1 is calculated by the following equation (6).
P1 = P-πD (a + b) / A ... (6)

In the adjustment movement pitch calculation step (step S3), as the adjustment movement pitch P1 derived by adjusting the reference movement pitch P based on the winding ribbon side deviation amount a and the supply ribbon side deviation amount b by the control unit 45. The adjustment movement pitch P1 obtained by the above equation (6) is calculated.

When the adjustment movement pitch P1 is calculated in the adjustment movement pitch calculation step (step S3), the drive control step (step S4) is then performed. In the drive control step (step S4), the traverse mechanism 4 is driven so as to change the speed ratio between the rotation speed of the forming drum 6 and the movement speed of the winding mechanism 3 based on the calculated adjustment movement pitch P1. The operation is controlled.

In the drive control step (step S4), first, the control unit 45 newly sets the speed ratio of the moving speed of the winding mechanism 3 to the rotating speed of the forming drum 6 based on the calculated adjustment moving pitch P1. The speed ratio to be changed is set (step S41). Then, the traverse mechanism 4 is controlled based on the newly set control command of the speed ratio (step S42). More specifically, a control command for the speed ratio newly set by the control unit 45 is transmitted to the ratio setting device 48. The ratio setting device 48 moves the moving speed of the winding mechanism 3 based on the detection result of the rotation speed of the molding drum 6 received from the drum rotation position detector 47 and the speed ratio control command received from the drive control unit 52. The rotation speed of the electric motor 29 of the traverse mechanism 4 corresponding to the above is calculated, and a control command of the rotation speed is transmitted to the electric motor 29. The drive operation of the traverse mechanism 4 is controlled by rotating the electric motor 29 based on the control command from the ratio setting device 48. As a result, the winding mechanism 3 moves at a moving speed based on the speed ratio set by the drive control unit 52.

When the drive control step (step S4) is completed, the ribbon-shaped rubber 100 wound around the forming drum 6 has a ribbon-like shape around the forming drum 6 unless it reaches the set winding length (steps S5, No). While the winding operation of the rubber 100 is continued, the deviation amount detection step (step S2), the adjustment movement pitch calculation step (step S3), and the drive control step (step S4) are repeatedly performed. When it is determined that the set winding length has been reached (step S5, Yes), the winding operation of the ribbon-shaped rubber 100 around the forming drum 6 is completed, and the winding operation is completed.

As described above, the operation of winding the ribbon-shaped rubber 100 around the outer circumference of the molding drum 6 is performed until the ribbon-shaped rubber 100 for the set winding length is wound around the molding drum 6. Then, during the winding operation of the ribbon-shaped rubber 100 around the outer circumference of the forming drum 6, the deviation amount detection step (step S2), the adjustment movement pitch calculation step (step S3), and the drive control step (step S4) are predetermined. It is repeated every control cycle. Therefore, during the winding operation, the speed ratio of the moving speed of the winding mechanism 3 to the rotating speed of the forming drum 6 is changed every moment at a predetermined control cycle based on the adjusted moving pitch P1. Then, the driving operation of the traverse mechanism 4 is controlled every moment at a predetermined control cycle, and the moving speed of the winding mechanism 3 is controlled so as to change according to the adjustment movement pitch P1. As a result, the deviation of the winding position of the ribbon-shaped rubber 100 is corrected continuously every moment, and the side surfaces of the ribbon-shaped rubber 100 adjacent to each other in the direction parallel to the axial direction X1 are abutted against each other and spiraled around the forming drum 6. Can be rolled into a shape.

[Example]
A test for evaluating whether or not the generation of overlapping and gaps of the ribbon-shaped rubber 100, which leads to quality deterioration of the toothed belt W1 manufactured from the molded belt sleeve 102, can be suppressed by the rubber sleeve molding method of the present embodiment. Was done. In the test, a belt sleeve 102 including a rubber sleeve 101 formed by controlling the speed of the traverse mechanism 4 with respect to the forming drum 6 by the method of forming the rubber sleeve of the present embodiment is used as an example, while controlling the speed of the traverse mechanism 4. A belt sleeve 102 including a rubber sleeve 101 formed without performing the above was used as a comparative example.

Regarding the evaluation method, after the unvulcanized belt sleeve 102 is molded, in the direction parallel to the axial direction X1 of the molding drum 6 within the range of the effective surface length excluding both ends that do not become a product after vulcanization. The evaluation was performed by visually confirming whether or not there was any overlap or gap between the adjacent ribbon-shaped rubbers 100 over the entire circumference.

Specifically, when the adjacent side surfaces of the ribbon-shaped rubber 100 wound around the molding drum 6 overlap even at one place or a gap is generated, the quality of the toothed belt W1 manufactured from the belt sleeve 102 is ensured. It was judged that there was a risk that it would not be possible to do so. On the other hand, if the adjacent side surfaces of the ribbon-shaped rubber 100 do not overlap at all and no gap is generated, it can be judged that the quality of the toothed belt W1 manufactured from the belt sleeve 102 as a material can be ensured. Judged.

FIG. 12 is a table showing a list of rubber compositions of the rubber sleeve 101 according to Examples and Comparative Examples. The rubber composition of the rubber sleeve 101 according to Examples and Comparative Examples has 100 parts by mass of chloroprene rubber, 4 parts by mass of magnesium oxide, 2 parts by mass of an antioxidant, 65 parts by mass of carbon black, and 8 parts by mass of a plasticizer. 15 parts by mass of rubber, 2 parts by mass of vulcanization accelerator, and 0.5 parts by mass of sulfur are blended. The rubber hardness of the toothed belt W1 after vulcanization is about 75 in terms of durometer hardness (JIS K6253-2012) defined by Japanese Industrial Standards.

FIG. 13 is a table showing a list of constituent materials of the core wire 91 of the belt sleeve 102 according to the examples and the comparative examples. In the molding of the belt sleeve 102 according to the examples and the comparative examples, the same core wire 91 was used, and in each case, a twisted cord made of a glass fiber filament group was used. Further, for the core wire 91, glass having a glass composition of E glass or high-strength glass obtained by twisting filaments having a thickness of 5 to 9 μm was used. Further, as the core wire 91, one in which the filament was treated with a protective agent made of a compound or an adhesive such as an RFL liquid was used. Further, the wire diameter of the core wire 91 was set to about 0.38, and the twisted structure of the core wire 91 was a single-twisted structure of 330 dtex / 3. The number of twists of the core wire 91 was 16 times / 10 cm, and the total fineness was 990 dtex. The median diameter of the core wire 91 was 0.25 mm.

FIG. 14 is a diagram showing a list of materials of the tooth cloth 95 of the belt sleeve 102 according to the examples and the comparative examples. As the tooth cloth 95 covering the tooth portion 93 and the tooth bottom portion 94, a cloth composed of weft threads and warp threads was used. Woolly 6 nylon was used for the weft of the tooth cloth 95. The yarn composition was set to 44 dtex / 5 threads, and the weaving density was set to 120 threads / 30 mm. 6 nylon was used for the diameter thread of the tooth cloth 95. The yarn composition was set to 235 dtex / thread, and the weaving density was set to 90 threads / 30 mm.

The rubber material (rubber composition) of the rubber sleeve 101 constituting the belt sleeve 102 according to the examples and the comparative examples, wherein the rubber material forming the belt back portion 92 and the tooth portion 93 of the toothed belt W1 is a Banbury mixer. Prepared by kneading for 4 minutes. The rubber material prepared in this manner was rolled with a rolling roll and formed into a rolled rubber sheet having a thickness of about 1 mm. The thickness accuracy at this time was set from −0.05 to +0.05 mm. Further, the rolled rubber sheet is passed through a slitter and has a thickness of 1.0 mm (error is set from -0.05 to +0.05 mm) and a width of 20 mm (error is set from -0.2 to +0.2 mm). It was molded into the ribbon-shaped rubber 100 (which was rolled). The ribbon-shaped rubber 100 was wound around the bobbin 18 along the film 107. The tooth cloth 95 was made of the above-mentioned material, immersed in an RFL solution, dried and heat-treated to produce the tooth cloth 95. The tooth cloth 95 was molded into an endless tubular shape and installed on the outer periphery of the molding drum 6 before the ribbon-shaped rubber 100 was wound around the molding drum 6. Then, the core wire 91 was spirally wound around the outer circumference of the tooth cloth 95 at a predetermined core wire pitch. Next, the unvulcanized belt sleeve 102 was formed by spirally winding the ribbon-shaped rubber 100 around the outer circumference of the core wire 91 in a plurality of circumferences to form the rubber sleeve 101. When the ribbon-shaped rubber 100 was wound around the outer circumference of the core wire 91, in the embodiment, the speed of the traverse mechanism 4 with respect to the forming drum 6 was controlled by the method of forming the rubber sleeve of the present embodiment. Further, in the embodiment, a laser scanner (manufactured by OMRON Corporation, model ZG2-WDS22) was used as the supply ribbon position detector 16 and the winding ribbon position detector 12 connected to the control device 5. On the other hand, in the comparative example, the speed of the traverse mechanism 4 with respect to the forming drum 6 was not controlled. After the ribbon-shaped rubber was wound around the core wire 91, the molding drum 6 was sealed in a vulcanization can and heated while being pressurized inward in the radial direction of the molding drum to perform vulcanization. By the vulcanization, the unvulcanized rubber is filled on the tooth portion 93 side through the gap of the core wire 91, so that the tooth portion 93 is formed on the toothed belt W1. The vulcanized rubber sleeve is cut into predetermined widths and formed into a toothed belt W1.

In the molding of the belt sleeve 102 according to the examples and the comparative examples, when the ribbon-shaped rubber 100 is wound around the molding drum 6 from above the core wire 91 already wound around the molding drum 6, the cycle is about 300 to 500 mm. It meandered. The meandering amount was about −0.6 to +0.6 mm in the direction parallel to the axial direction X1 of the forming drum 6. Further, the width of the molding drum 6 used for molding the belt sleeve 102 according to the examples and the comparative examples is set to about 500 mm, the diameter of the outer peripheral portion is set to about 290 mm, and the rotation speed is set to 0.5 m / sec. did. Further, the execution frequency of controlling the speed of the traverse mechanism 4 with respect to the forming drum 6 was set to every 0.1 seconds, and the speed of the traverse mechanism 4 was controlled every 50 mm as the peripheral length of the forming drum. The distance A1 from the winding original position O to the supply ribbon side detection position Z1 and the distance A2 from the winding original position O to the winding ribbon side detection position Z2 were set to 230 mm. The reference movement pitch P is a value obtained by adjusting the width of the ribbon-shaped rubber 100 in consideration of the inclination due to spirally winding around the forming drum 6. Specifically, it is set at 20 mm + 20 / COS θ mm. When the ribbon-shaped rubber is wound around the molding drum 6, it can be wound 24 times. The adjustment movement pitch P1 was calculated by the above equation (6). Further, as the reference ribbon-shaped rubber 100S, a rubber woven fabric made of polyester having a width of 20.0 mm and a thickness of 0.5 mm was used.

As a result of molding the belt sleeve 102 under the above conditions, it was confirmed that when the ribbon-shaped rubber 100 was wound around the belt sleeve 102 according to the comparative example, the ends overlapped with each other and a gap was generated. On the other hand, in the molding of the belt sleeve 102 according to the embodiment, when the ribbon-shaped rubber 100 was wound, the ends did not overlap each other or a gap was not generated. From the above results, in the rubber sleeve molding method of the present embodiment, the overlapping of the ribbon-shaped rubber 100 and the occurrence of gaps are suppressed by adjusting the moving speed of the winding mechanism 3 with respect to the rotation speed of the molding drum 6. It was confirmed that As a result, according to the rubber sleeve molding method of the present embodiment, the decrease in efficiency at the time of molding the rubber sleeve is suppressed, and the quality of the transmission belt manufactured by using the molded rubber sleeve as a material is deteriorated. It was confirmed that it can be suppressed.

[Action and effect of this embodiment]
According to the rubber sleeve molding method of the present embodiment, the ribbon-shaped rubber 100 is supplied from the winding mechanism 3 that moves by the traverse mechanism 4 in parallel with the axial direction X1 of the molding drum 6 in synchronization with the rotation of the molding drum 6. The rubber sleeve 101, which is a component of the belt sleeve 102, is formed by spirally winding it around the outer circumference of the forming drum 6 in a plurality of turns. In addition to this, the deviation amount detection step S2 and the adjustment movement pitch calculation step S3 And the drive control step S4. Then, in the deviation amount detection step S2, the deviation amount of the actual position of the ribbon-shaped rubber 100 with respect to the position of the reference ribbon rubber 100S is detected, and in the adjustment movement pitch calculation step S3, the reference movement pitch P is adjusted based on the deviation amount. The adjusted movement pitch P1 is calculated. Further, in the drive control step S4, the drive operation of the traverse mechanism 4 is controlled so as to change the speed ratio between the rotation speed of the forming drum 6 and the movement speed of the winding mechanism 3 based on the adjustment movement pitch P1. .. As a result, even when the ribbon-shaped rubber 100 wound around the molding drum 6 fluctuates from a predetermined width or when the ribbon-shaped rubber 100 is wound around the molding drum 6 and meanders, the rotation speed of the molding drum 6 By adjusting the moving speed of the winding mechanism 3 with respect to the position of the reference ribbon rubber 100S according to the amount of deviation of the actual position of the ribbon-shaped rubber 100, the overlap of the ribbon-shaped rubber 100 and the gap between the ribbon-shaped rubber 100 The occurrence can be suppressed. Further, the moving speed of the winding mechanism 3 with respect to the rotation speed of the molding drum 6 is automatically adjusted according to the amount of displacement of the position of the ribbon-shaped rubber 100, and the overlap of the ribbon-shaped rubber 100 and the generation of gaps are suppressed. Therefore, it is not necessary to set the rotation speed of the molding drum 6 to be slow and carefully wind the ribbon-shaped rubber 100 around the molding drum 6. Therefore, it is possible to suppress a decrease in efficiency during molding of the rubber sleeve 101. Further, since the overlap of the ribbon-shaped rubber 100 and the generation of gaps during the molding of the rubber sleeve 101 are suppressed, it is possible to prevent the rubber sleeve 101 from having an excessive volume portion or a volume insufficient portion. Therefore, in the transmission belt manufactured by using the molded rubber sleeve 100 as a material, it is possible to suppress the occurrence of lack of meat and air bubbles in the rubber portion of the main body, and it is possible to suppress the deterioration of quality.

Therefore, according to the present embodiment, it is possible to suppress a decrease in efficiency during molding of the rubber sleeve 101 and a decrease in quality of the transmission belt W1 manufactured by using the rubber sleeve 101 as a material. A method of forming a sleeve can be provided.

Further, according to the rubber sleeve molding method of the present embodiment, in the rubber sleeve molding method, the supply ribbon side which is a predetermined position on the ribbon supply path 28 which traces the ribbon supply path 28 upstream from the winding original position O. The amount of deviation b on the supply ribbon side at the detection position Z1 is detected. Therefore, when the ribbon-shaped rubber 100 supplied to the winding original position O is meandering, the amount of deviation of the winding position due to the meandering is detected as the amount of deviation b on the supply ribbon side. Further, in the above configuration, the winding ribbon side shift at the winding ribbon side detection position Z2, which is a predetermined position on the molding drum 6 that goes back from the winding original position O along the direction opposite to the rotation direction R6 of the molding drum 6. The amount a is detected. Therefore, when the ribbon-shaped rubber 100 wound around the forming drum 6 has a variation in the width direction, the deviation amount of the winding position due to the variation in the width dimension is detected as the deviation amount a on the winding ribbon side. Ribbon. Then, in the above method, the adjustment movement pitch P1 is calculated based on the supply ribbon side deviation amount b and the winding ribbon side deviation amount a. Therefore, the adjustment movement pitch P1 can be calculated according to the meandering of the ribbon-shaped rubber 100 and the fluctuation of the width dimension of the ribbon-shaped rubber 100. Further, in the above configuration, the amount of deviation due to the meandering of the supplied ribbon-shaped rubber 100 and the amount of deviation due to the fluctuation of the width dimension at the position where the ribbon-shaped rubber 100 is wound on the forming drum 6 are determined by the ribbon on the forming drum 6. The shape rubber 100 is detected before it is wound. Then, the adjustment movement pitch P1 is calculated according to the amount of deviation detected before the winding, and the ribbon-shaped rubber 100 is wound around the molding drum 6 based on the control according to the adjustment movement pitch P1. Therefore, according to the above configuration, the ribbon-shaped rubber 100 can be wound around the molding drum 6 by further suppressing the occurrence of overlapping and gaps of the ribbon-shaped rubber 100.

Further, according to the method of molding the rubber sleeve of the present embodiment, the distance from the winding original position O to the supply ribbon side detection position Z1 and the distance to the winding ribbon side detection position Z2 are the same. Therefore, the timing of detecting the deviation amount at each position is almost the same. This eliminates the need to consider the amount of deviation caused by the timing difference between one detection and the other detection. As a result, more accurate control can be performed.

Further, according to the rubber sleeve molding method of the present embodiment, the displacement amount b on the supply ribbon side in the displacement amount detection step S2 is the position of the side surface portion on the reference ribbon rubber 100S opposite to the moving direction X2 side of the winding mechanism. It is detected as the amount of deviation from the position of the side surface portion on the side opposite to the moving direction X2 side of the winding mechanism in the actual ribbon-shaped rubber 100 supplied to the forming drum 6. That is, the detection of the deviation amount b on the supply ribbon side is performed with reference to the side surface portion of the ribbon-shaped rubber 100. Further, the amount of deviation a on the winding ribbon side is the position of the side surface portion on the moving direction X2 side of the winding mechanism in the reference ribbon rubber 100S and the movement of the winding mechanism in the actual ribbon-shaped rubber 100 wound around the molding drum 6. It is detected as the amount of deviation from the position of the side surface portion on the direction X2 side. That is, the amount of deviation a on the winding ribbon side is also detected with reference to the side surface portion of the ribbon-shaped rubber 100. Therefore, even if the ribbon-shaped rubber 100 wound around the forming drum 6 is meandering or the width dimension is changed, the amount of deviation due to the meandering is reliably detected as the amount of deviation of the position of the side surface portion at each of the detection positions Z1 and Z2. be able to. Then, based on the detected deviation amount, the ribbon-shaped rubber 100 suppresses the overlap between the side surface portions adjacent to each other in the width direction and the generation of the gap between the side surface portions in the ribbon-shaped rubber 100. It is wound around the forming drum 6. Therefore, it is possible to mold the rubber sleeve 101 having a better surface condition in which the occurrence of steps due to overlapping portions and dents due to gap portions is further suppressed.

Further, according to the rubber sleeve molding method of the present embodiment, the supply ribbon side deviation amount b is detected in a state where tension is applied to the ribbon-shaped rubber 100 by the tension roll 22. Therefore, the ribbon-shaped rubber 100 in which the amount of deviation b on the supply ribbon side is detected runs stably on the tension roll 22 without loosening. As a result, the amount of deviation b on the supply ribbon side is accurately detected.

Further, according to the rubber sleeve molding method of the present embodiment, a racer scanner is used in the deviation amount detection step S2 for detecting the deviation amount. Therefore, high-speed detection becomes possible, and measurement can be performed with a shorter exposure time than, for example, a non-contact scanner other than a laser scanner. As a result, the amount of deviation can be accurately detected even if the rotation speed of the forming drum 6 is increased. As a result, the efficiency of molding the rubber sleeve 101 can be further improved while ensuring the quality of the transmission belt manufactured by using the rubber sleeve 101 as a material.

Further, the rubber sleeve molding method of the present embodiment may be used in a form in which the rubber sleeve is molded by winding only one layer of the ribbon-shaped rubber 100 in the radial direction of the molding drum 6. Even in the case of a rubber sleeve having only one layer of the ribbon-shaped rubber 100, the generation of overlapping portions and gap portions of the ribbon-shaped rubber 100 is suppressed. Therefore, as compared with the case of a rubber sleeve formed by laminating a plurality of layers of the ribbon-shaped rubber 100, a rubber sleeve having only one layer is used as a material, which is greatly affected by the overlapping portion and the gap portion of the ribbon-shaped rubber 100. In the transmission belt manufactured by using the method, deterioration in quality can be remarkably suppressed.

According to the rubber sleeve molding apparatus 1 of the present embodiment, the molding drum 6, the winding mechanism 3 for winding the ribbon-shaped rubber 100 around the molding drum 6, and the winding mechanism 3 are moved in parallel with the axial direction X1 of the molding drum 6. It is provided with a traverse mechanism 4 that is driven so as to be driven. Then, the ribbon-shaped rubber 100 is supplied from the winding mechanism 3 along the ribbon supply path 28, and is spirally wound around the outer circumference of the molding drum 6 in a plurality of circumferences to form an unvulcanized rubber sleeve. In addition to this, the rubber sleeve molding apparatus 1 of the present embodiment includes a ribbon position detector 70 that detects the position of the ribbon-shaped rubber 100 in a direction parallel to the axial direction X1 of the molding drum 6. Further, based on the detection result of the ribbon position detector 70, the deviation amount calculation unit calculates the deviation amount of the ribbon-shaped rubber 100 from the actual position of the ribbon-shaped rubber 100 in the direction parallel to the axial direction X1 of the molding drum 6 with respect to the position of the reference ribbon rubber 100S. 50 is calculated. Further, the adjustment movement pitch calculation unit 51 calculates the adjustment movement pitch P1 derived by adjusting the reference movement pitch P based on the deviation amount. Further, the drive control unit 52 controls the drive operation of the traverse mechanism 4 so as to change the speed ratio between the rotation speed of the forming drum 6 and the movement speed of the winding mechanism 3 based on the adjustment movement pitch P1. As a result, even when the ribbon-shaped rubber 100 wound around the molding drum 6 fluctuates from a predetermined width or when the ribbon-shaped rubber 100 is wound around the molding drum 6 and meanders, the rotation speed of the molding drum 6 By adjusting the moving speed of the winding mechanism 3 with respect to the position of the reference ribbon rubber 100S according to the amount of deviation of the actual position of the ribbon-shaped rubber 100, the overlap of the ribbon-shaped rubber 100 and the gap between the ribbon-shaped rubber 100 The occurrence can be suppressed. Further, the moving speed of the winding mechanism 3 with respect to the rotation speed of the molding drum 6 is automatically adjusted according to the amount of displacement of the position of the ribbon-shaped rubber 100, and the overlap of the ribbon-shaped rubber 100 and the generation of gaps are suppressed. Therefore, it is not necessary to set the rotation speed of the molding drum 6 to be slow and carefully wind the ribbon-shaped rubber 100 around the molding drum 6. Therefore, it is possible to suppress a decrease in efficiency during molding of the rubber sleeve. Further, since the overlap of the ribbon-shaped rubber and the generation of gaps during the molding of the rubber sleeve are suppressed, it is possible to prevent the rubber sleeve from having an excessive volume portion or a volume insufficient portion. Therefore, in the transmission belt manufactured by using the molded rubber sleeve as a material, it is possible to suppress the occurrence of deficiency or air bubbles in the rubber portion of the main body, and it is possible to suppress the deterioration of quality.

Therefore, according to the above-mentioned rubber sleeve molding apparatus 1, it is possible to suppress a decrease in efficiency during molding of the rubber sleeve and a decrease in quality of a transmission belt manufactured by using the rubber sleeve as a material. ..

Further, according to the rubber sleeve molding apparatus 1 of the present embodiment, the ribbon position detector 70 is a supply ribbon at a predetermined position on the ribbon supply path 28 that traces the ribbon supply path 28 upstream from the winding original position O. A supply ribbon position detector 16 that detects the position of the ribbon-shaped rubber 100 in a direction parallel to the axial direction X1 of the molding drum 6 at the side detection position Z1 is included. The supply ribbon position detector 16 detects the supply ribbon side deviation amount b at the supply ribbon side detection position Z1. Therefore, when the ribbon-shaped rubber 100 supplied to the winding original position O is meandering, the amount of deviation of the winding position due to the meandering is detected as the amount of deviation b on the supply ribbon side. Further, the ribbon position detector 70 is used at the winding ribbon side detection position Z2, which is a predetermined position on the molding drum 6 that goes back from the winding original position O along the direction opposite to the rotation direction R6 of the molding drum 6. It is configured to include a wound ribbon position detector 12 that detects the position of the ribbon-shaped rubber 100 in a direction parallel to the axial direction X1 of 6. The ribbon position detector 70 detects the winding ribbon side deviation amount a at the winding ribbon side detection position Z2. Therefore, when the ribbon-shaped rubber 100 wound around the forming drum 6 has a variation in the width direction, the deviation amount of the winding position due to the variation in the width dimension is detected as the deviation amount a on the winding ribbon side. Ribbon. Further, in the rubber sleeve molding apparatus 1 of the present embodiment, the deviation amount calculation unit 50 determines the deviation amount on the supply ribbon side, which is the deviation amount at the supply ribbon side detection position Z1, based on the detection result of the supply ribbon position detector 16. b is calculated, and based on the detection result of the winding ribbon position detector 12, the winding ribbon side deviation amount a, which is the deviation amount at the winding ribbon side detection position Z2, is calculated. Further, the adjustment movement pitch calculation unit 51 calculates the adjustment movement pitch P1 based on the supply ribbon side deviation amount b and the winding ribbon side deviation amount a. Therefore, the adjustment movement pitch P1 can be calculated according to the meandering of the ribbon-shaped rubber 100 and the fluctuation of the width dimension of the ribbon-shaped rubber 100. Further, according to the rubber sleeve molding apparatus 1 of the present embodiment, the amount of deviation due to the meandering of the supplied ribbon-shaped rubber 100 and the amount of deviation due to the fluctuation of the width dimension at the position where the ribbon-shaped rubber 100 is wound on the molding drum 6. Is detected before the ribbon-shaped rubber 100 is wound around the molding drum 6. Then, the adjustment movement pitch P1 is calculated according to the amount of deviation detected before the winding, and the ribbon-shaped rubber 100 is wound around the molding drum 6 based on the control according to the adjustment movement pitch P1. Therefore, according to the above configuration, the ribbon-shaped rubber 100 can be wound around the molding drum 6 by further suppressing the occurrence of overlapping and gaps of the ribbon-shaped rubber 100.

Further, according to the rubber sleeve molding apparatus 1 of the present embodiment, the distance from the winding original position O to the supply ribbon side detection position Z1 and the distance to the winding ribbon side detection position Z2 are the same. Therefore, the timing of detecting the deviation amount at each position is almost the same. This eliminates the need to consider the amount of deviation caused by the timing difference between one detection and the other detection. As a result, more accurate control can be performed.

Further, according to the rubber sleeve molding apparatus 1 of the present embodiment, the supply ribbon position detector 16 is a side surface of the ribbon-shaped rubber 100 on the side surface opposite to the moving direction X2 side of the winding mechanism 3 at the supply ribbon side detection position Z1. The position of the portion in the direction parallel to the axial direction X1 of the forming drum 6 is detected. Then, in the deviation amount calculation unit 50, based on the detection result, the position of the side surface portion on the side opposite to the moving direction X2 side of the winding mechanism 3 in the actual ribbon-shaped rubber 100 supplied to the molding drum 6 with respect to the reference ribbon rubber 100S. The deviation amount b on the supply ribbon side is calculated as the deviation amount of. That is, the calculation of the deviation amount b on the supply ribbon side is performed with reference to the side surface portion of the ribbon-shaped rubber 100. Further, the winding ribbon position detector 12 is a position of a side surface portion of the ribbon-shaped rubber 100 on the moving direction X2 side of the ribbon-shaped rubber 100 at the winding ribbon side detection position Z2, and is the position of the axial direction X1 of the forming drum 6. Detects position in parallel direction. Then, in the deviation amount calculation unit 50, based on the detection result, the deviation amount of the position of the side surface portion on the moving direction X2 side of the winding mechanism 3 in the actual ribbon-shaped rubber 100 supplied to the molding drum 6 with respect to the reference ribbon rubber 100S. As a result, the amount of deviation a on the winding ribbon side is calculated. That is, the calculation of the amount of deviation a on the winding ribbon side is also performed with reference to the side surface portion of the ribbon-shaped rubber 100. Therefore, even if the ribbon-shaped rubber 100 wound around the forming drum 6 has meandering or fluctuations in width dimension, the amount of deviation due to these meanders is reliably detected and calculated as the amount of deviation of the position of the side surface portion at each detection position. be able to. Then, based on the calculated deviation amount, the ribbon-shaped rubber 100 suppresses the overlap between the side surface portions adjacent to each other in the width direction and the generation of the gap between the side surface portions in the ribbon-shaped rubber 100. It is wound around the forming drum 6. Therefore, it is possible to form a rubber sleeve having a better surface condition in which the occurrence of steps due to overlapping portions and dents due to gap portions is further suppressed.

Further, according to the rubber sleeve molding apparatus 1 of the present embodiment, the supply ribbon side deviation amount b is detected in a state where tension is applied to the ribbon-shaped rubber 100 by the tension roll 22. Therefore, the ribbon-shaped rubber 100 in which the amount of deviation b on the supply ribbon side is detected runs stably on the tension roll 22 without loosening. As a result, the amount of deviation b on the supply ribbon side is accurately detected.

Further, according to the rubber sleeve molding apparatus 1 of the present embodiment, the racer scanner is used as the ribbon position detector 70 that detects the position of the ribbon-shaped rubber 100. Therefore, high-speed detection becomes possible, and measurement can be performed with a shorter exposure time than, for example, a non-contact scanner other than a laser scanner. As a result, the amount of deviation can be accurately detected even if the rotation speed of the forming drum 6 is increased. As a result, it is possible to further improve the efficiency in molding the rubber sleeve while ensuring the quality of the transmission belt manufactured by using the rubber sleeve as a material.

Further, according to the rubber sleeve molding apparatus 1 of the present embodiment, the rubber sleeve is molded by winding only one layer around the molding drum 6. Therefore, even when the ribbon-shaped rubber 100 has only one layer of the rubber sleeve, the occurrence of the overlapping portion and the gap portion of the ribbon-shaped rubber 100 is suppressed. Therefore, as compared with the case of a rubber sleeve formed by laminating a plurality of layers of the ribbon-shaped rubber 100, a rubber sleeve having only one layer is used as a material, which is greatly affected by the overlapping portion and the gap portion of the ribbon-shaped rubber 100. In the transmission belt manufactured by using the method, deterioration in quality can be remarkably suppressed.

[Modification example]
The embodiment of the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and can be variously modified and implemented as long as it is described in the claims. For example, you may change it as follows.

(1) In the above-described embodiment, the distance A1 from the winding original position O to the supply ribbon side detection position Z1 and the distance A2 from the winding original position O to the winding ribbon side detection position Z2 are the same distance. The case where it is set to is described as an example, but it does not have to be this way. For example, the distance A1 from the winding original position O to the supply ribbon side detection position Z1 and the distance A2 from the winding original position O to the winding ribbon side detection position Z2 may be set to be different distances.

(2) Further, in the above-described embodiment, a case where a laser scanner is used as the winding ribbon position detector 12 and the supply ribbon position detector 16 included in the ribbon position detector 70 has been described as an example. It doesn't have to be this street. For example, an image processing scanner may be used as the winding ribbon position detector 12 and the supply ribbon position detector 16.

The present invention can be widely applied as a method for molding a rubber sleeve using a ribbon-shaped rubber and a device for molding a rubber sleeve.

1 Rubber sleeve molding device 2 Sleeve holding mechanism 3 Winding mechanism 4 Traverse mechanism 6 Molding drum 12 Winding ribbon position detector 16 Supply ribbon position detector 28 Ribbon supply path 45 Control unit 50 Misalignment amount calculation unit 51 Adjustment pitch calculation unit 52 Drive control unit 70 Ribbon position detector 100 Ribbon-shaped rubber 101 Rubber sleeve S2 Misalignment amount detection process S3 Adjustment movement pitch calculation process S4 Drive control process

Claims (14)

Ribbon-shaped rubber is supplied along the ribbon supply path from the winding mechanism that is driven and moved by the traverse mechanism in parallel with the axial direction of the forming drum in synchronization with the rotation of the forming drum, and is wound around the forming drum. A rubber sleeve molding method in which an unvulcanized rubber sleeve is molded by spirally winding the ribbon-shaped rubber around the outer circumference of a molding drum.
The ribbon-shaped rubber having a predetermined width is supplied along the ribbon supply path without meandering, and the reference movement is the movement pitch of the winding mechanism per rotation of the molding drum, which is the movement pitch corresponding to the predetermined width. In a direction parallel to the axial direction of the molding drum with respect to the position of the reference ribbon rubber defined as the ribbon-shaped rubber when the ribbon-shaped rubber is wound around the molding drum by moving the winding mechanism based on the pitch. A deviation amount detection step for detecting the deviation amount of the actual position of the ribbon-shaped rubber, and
The adjustment movement pitch calculation step of calculating the adjustment movement pitch derived by adjusting the reference movement pitch based on the deviation amount, and
A drive control step that controls the drive operation of the traverse mechanism so as to change the speed ratio between the rotation speed of the molding drum and the movement speed of the winding mechanism based on the adjustment movement pitch.
A method of molding a rubber sleeve, which comprises. The method for molding a rubber sleeve according to claim 1.
In the deviation amount detection step,
At a predetermined position on the ribbon supply path upstream of the ribbon supply path from the original winding position, which is the position on the molding drum where the ribbon-shaped rubber begins to wind around the outer circumference of the rotating molding drum. The amount of deviation on the supply ribbon side, which is the amount of deviation at a certain supply ribbon side detection position,
Along the winding direction of the ribbon-shaped rubber around the molding drum, which is adjacent to the winding original position in a direction parallel to the axial direction of the molding drum, and opposite to the rotation direction of the molding drum. The amount of deviation on the winding ribbon side, which is the amount of deviation at the detection position on the winding ribbon side, which is a predetermined position on the molding drum that goes back along the direction, and the amount of deviation on the winding ribbon side.
Detected
In the adjustment movement pitch calculation step, the rubber is characterized in that the adjustment movement pitch derived by adjusting the reference movement pitch based on the supply ribbon side deviation amount and the winding ribbon side deviation amount is calculated. How to mold the sleeve. The method for molding a rubber sleeve according to claim 2.
In the deviation amount detection step, the distance from the winding original position to the supply ribbon side detection position and the distance from the winding original position to the winding ribbon side detection position are set to the same distance. A method for molding a rubber sleeve, which is characterized in that. The method for molding a rubber sleeve according to claim 2 or 3.
In the deviation amount detection step,
The winding original position is set as a position of a side surface portion of the ribbon-shaped rubber opposite to the moving direction of the winding mechanism in a direction parallel to the axial direction of the molding drum.
The amount of deviation on the supply ribbon side is the position of the side surface portion of the reference ribbon rubber on the side opposite to the moving direction side of the winding mechanism in the direction parallel to the axial direction of the molding drum at the supply ribbon side detection position. It is detected as the amount of deviation from the position of the side surface portion on the side opposite to the moving direction side of the winding mechanism in the actual ribbon-shaped rubber supplied to the molding drum.
The amount of deviation on the winding ribbon side is the position of the side surface portion of the reference ribbon rubber on the moving direction side of the reference ribbon rubber in the direction parallel to the axial direction of the molding drum at the winding ribbon side detection position. A method for forming a rubber sleeve, which is detected as an amount of deviation from the position of a side surface portion of the winding mechanism on the moving direction side of the actual ribbon-shaped rubber wound around the forming drum. The method for molding a rubber sleeve according to any one of claims 2 to 4.
In the shift amount detection step, the shift amount on the supply ribbon side is detected in a state where the ribbon-shaped rubber is wound around a tension roll at the detection position on the supply ribbon side and tension is applied to the ribbon-shaped rubber. A method for molding a rubber sleeve. The method for molding a rubber sleeve according to any one of claims 1 to 5.
A method for molding a rubber sleeve, which comprises detecting the deviation amount using a laser scanner in the deviation amount detection step. The method for molding a rubber sleeve according to any one of claims 1 to 6.
A method for molding a rubber sleeve, characterized in that the rubber sleeve is molded by winding only one layer of the ribbon-shaped rubber in the radial direction of the molding drum. The molding drum, the winding mechanism for winding the ribbon-shaped rubber around the molding drum, and the winding mechanism are driven so as to move in parallel with the axial direction of the molding drum in synchronization with the rotation of the molding drum. A traverse mechanism is provided, and the ribbon-shaped rubber is supplied from the winding mechanism driven and moved by the traverse mechanism along a ribbon supply path and wound around the molding drum, and the ribbon is wound on the outer periphery of the molding drum. It is a rubber sleeve molding device that molds unvulcanized rubber sleeves by winding the shaped rubber around multiple times in a spiral shape.
A ribbon position detector that detects the position of the ribbon-shaped rubber in a direction parallel to the axial direction of the molding drum, and
The ribbon-shaped rubber having a predetermined width is supplied along the ribbon supply path without meandering, and the reference movement is the movement pitch of the winding mechanism per rotation of the molding drum, which is the movement pitch corresponding to the predetermined width. In a direction parallel to the axial direction of the molding drum with respect to the position of the reference ribbon rubber defined as the ribbon-shaped rubber when the ribbon-shaped rubber is wound around the molding drum by moving the winding mechanism based on the pitch. A deviation amount calculation unit that calculates the deviation amount of the actual position of the ribbon-shaped rubber based on the detection result of the ribbon position detector.
An adjustment movement pitch calculation unit that calculates an adjustment movement pitch derived by adjusting the reference movement pitch based on the deviation amount, and
A drive control unit that controls the drive operation of the traverse mechanism so as to change the speed ratio between the rotation speed of the molding drum and the movement speed of the winding mechanism based on the adjustment movement pitch.
A rubber sleeve molding apparatus, which further comprises. The rubber sleeve molding apparatus according to claim 8.
The ribbon position detector is
At a predetermined position on the ribbon supply path upstream of the ribbon supply path from the winding original position, which is the position on the molding drum where the ribbon-shaped rubber starts to wind around the outer circumference of the rotating molding drum. A supply ribbon position detector that detects the position of the ribbon-shaped rubber in a direction parallel to the axial direction of the molding drum at a certain supply ribbon side detection position.
Along the winding direction of the ribbon-shaped rubber around the molding drum, which is adjacent to the winding original position in a direction parallel to the axial direction of the molding drum, and opposite to the rotation direction of the molding drum. Winding ribbon position detector that detects the position of the ribbon-shaped rubber in the direction parallel to the axial direction of the molding drum at the winding ribbon side detection position which is a predetermined position on the molding drum that goes back along the direction. When,
Including
Based on the detection result of the supply ribbon position detector, the deviation amount calculation unit calculates the supply ribbon side deviation amount, which is the deviation amount at the supply ribbon side detection position, and detects the winding ribbon position detector. Based on the result, the winding ribbon side deviation amount, which is the deviation amount at the winding ribbon side detection position, is calculated.
The rubber adjusting movement pitch calculation unit calculates the adjusted movement pitch derived by adjusting the reference movement pitch based on the supply ribbon side deviation amount and the winding ribbon side deviation amount. Sleeve molding equipment. The rubber sleeve molding apparatus according to claim 9.
The rubber is characterized in that the distance from the winding original position to the supply ribbon side detection position and the distance from the winding original position to the winding ribbon side detection position are set to the same distance. Sleeve molding equipment. The rubber sleeve molding apparatus according to claim 9 or 10.
The winding original position is set as a position of a side surface portion of the ribbon-shaped rubber opposite to the moving direction of the winding mechanism in a direction parallel to the axial direction of the molding drum.
The supply ribbon position detector is a position of a side surface portion of the ribbon-shaped rubber on the side opposite to the moving direction side of the winding mechanism at the supply ribbon side detection position, and is in a direction parallel to the axial direction of the molding drum. Detects the position in
The winding ribbon position detector is a position of a side surface portion of the ribbon-shaped rubber on the moving direction side of the ribbon-shaped rubber at the winding ribbon side detection position, in a direction parallel to the axial direction of the forming drum. Detect the position and
The deviation amount calculation unit is
Based on the detection result of the supply ribbon position detector, the deviation amount at the supply ribbon side detection position and the moving direction of the winding mechanism in the reference ribbon rubber in a direction parallel to the axial direction of the molding drum. As the amount of deviation between the position of the side surface portion on the opposite side to the side and the position of the side surface portion on the side opposite to the moving direction side of the winding mechanism in the actual ribbon-shaped rubber supplied to the molding drum, the said Calculate the amount of deviation on the supply ribbon side,
Based on the detection result of the winding ribbon position detector, the amount of deviation at the winding ribbon side detection position, which is the amount of deviation in the direction parallel to the axial direction of the molding drum, is the winding mechanism of the reference ribbon rubber. The winding ribbon is used as the amount of deviation between the position of the side surface portion on the moving direction side and the position of the side surface portion on the moving direction side of the winding mechanism in the actual ribbon-shaped rubber wound around the molding drum. A rubber sleeve molding apparatus characterized by calculating the amount of lateral displacement. The rubber sleeve molding apparatus according to any one of claims 9 to 11.
A tension roll around which the ribbon-shaped rubber is wound is further provided at the detection position on the supply ribbon side.
The supply ribbon position detector has a direction parallel to the axial direction of the molding drum in a state where the ribbon-shaped rubber is wound around a tension roll at the supply ribbon side detection position and tension is applied to the ribbon-shaped rubber. A rubber sleeve molding apparatus, which detects the position of the ribbon-shaped rubber in the above. The rubber sleeve molding apparatus according to any one of claims 8 to 12.
The ribbon position detector is a rubber sleeve molding apparatus, characterized in that it is a laser scanner. The rubber sleeve molding apparatus according to any one of claims 8 to 13.
A rubber sleeve molding apparatus, characterized in that the rubber sleeve is molded by winding only one layer of the ribbon-shaped rubber in the radial direction of the molding drum.

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