JP4988512B2 - Tire component supply device - Google Patents

Description

  The present invention relates to a tire component supply device that supplies various tire components to a tire molding drum, and is particularly suitable for molding a large radial tire such as an extra large ORR tire (Off the Road Radial Tire). The present invention relates to a tire component supply device.

  In a tire molding process in which various members such as unvulcanized rubber constituting a tire are bonded together to produce an unvulcanized raw tire, a molding method using a tire molding drum is widely adopted. In this method, raw tires and the like are produced by sequentially winding and adhering various tire components such as a belt-shaped inner liner, side tread, carcass ply on the outer peripheral surface of a rotating tire molding drum, In order to affix the constituent member to the tire molding drum, a tire constituent member supplying device is used.

  This conventional tire component supply device supplies and conveys tire components on a member supply conveyor, supplies the tire components on the tire molding drum from the tip of the member supply conveyor, and affixes the tire components on the tire molding drum. At this time, since the tire constituent member meanders on the member supply conveyor, the worker manually fine-tunes the tire constituent member supply device and pastes it in accordance with the set line.

Patent Document 1 discloses a method and an apparatus for winding a belt-shaped material in which a tire constituent member is wound around a tire molding drum.
JP 2005-271411 A

  However, in the conventional tire component supply device as described above, when the tire component supplied from the tire component supply device is meandering, an operator manually fine-tunes the position of the tire component supply device. While performing, simultaneously unwinding and pasting to the tire molding drum, this causes a slowing of the pasting speed.

  Also, if the length of the tire component is different from the reference value, it will be pasted once and then the excess / deficiency amount will be seen. There is a problem that the skill of the worker is required and the working time of the worker varies.

  In addition, since the tire constituent member is affixed while inching the tire molding drum, the tire constituent member partially contracts, and there is a problem that the thickness of the tire constituent member varies on the periphery of the drum.

  The present invention has been made in view of such problems, and an object of the present invention is to increase the speed at which the tire component is affixed to the tire molding drum, thereby eliminating the need for skill acquisition by workers. Another object of the present invention is to provide a tire component supply device that can reduce variations in the thickness of tire components on the drum circumference.

  In order to achieve the above object, the present invention provides a tire component supply device that supplies tire components to a tire molding drum, and is installed at a position above a member supply conveyor that conveys the tire components onto the tire molding drum. The sectional shape of the tire component is created from the displacement sensor for measuring the distance to the position of the tire component conveyed by the member supply conveyor and the distance data to the position of the tire component measured by the displacement sensor. Stored in the reference data storage unit, the reference data storage unit for storing the sectional shape of the reference tire component, the sectional shape of the tire component created by the sectional shape generator, and the reference data storage unit. A comparison unit that compares the cross-sectional shape of the tire component that is a reference, and a calculation that calculates the deviation of the tire component based on the comparison result. A processing unit, a moving mechanism unit for moving the tire constituent member supply device in a transverse direction, and a lateral direction of the member supply conveyor by controlling the moving mechanism unit based on a deviation of the tire constituent member obtained by the arithmetic processing unit And a controller for adjusting the position.

  Further, the present invention includes a length measuring unit that measures the length of the tire constituent member from the distance data to the position of the tire constituent member measured by the displacement sensor, and a rotation driving unit that drives the member supply conveyor. Further, the reference data storage unit stores reference length data of the tire constituent member, and the comparison unit is stored in the reference data storage unit and the length of the tire constituent member measured by the length measuring unit. Is compared with the reference length data, the calculation processing unit calculates the rotation speed of the rotation drive unit according to the comparison result, and the control unit adjusts the rotation speed of the rotation drive unit and supplies the member It is preferable to adjust the conveyance speed of the conveyor.

  The tire component supply device of the present invention captures the cross-sectional shape of the tire component by a displacement sensor, compares it with the shape of the reference tire component, and determines the lateral position of the member supply conveyor according to the displacement of the tire component. Therefore, manual fine adjustment by an operator is unnecessary. Moreover, since manual fine adjustment is not necessary, the attaching speed of the tire constituent member can be increased. Further, since the worker only presses the tire constituent member, skill acquisition becomes easy. Moreover, the variation in the thickness of the tire constituent member on the drum circumference can be reduced.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a top view of a tire molding drum and a tire component supply device that supplies a tire component to the tire molding drum. The tire component supply device 10 shown in FIG. 1 is installed at a position above the stock conveyor 11 for waiting the tire component, the member supply conveyor 12 for conveying the tire component on the tire forming drum, and the member supply conveyor 12. A displacement sensor (not shown) and a moving mechanism (not shown) that moves the member supply conveyor in the direction of the axis of rotation of the tire molding drum by automatic control. FIG. 1 shows a state where two types of tire constituent members A and B are waiting on the stock conveyor 11. The tire constituent members A and B are cut in advance to a length corresponding to the circumferential length of the tire forming drum. The member supply conveyor 12 is a belt conveyor driven by a servo motor.

  The tire molding drum 20 includes a central molding drum 21, a pair of inflatable cylindrical bladders 22 located on both sides thereof, and a pair of side decks 23 provided between the central molding drum 21 and the bladder 22. Become.

  The tire component supply device 10 is configured to traverse in the direction of the rotation axis of the tire molding drum to the member setting position of the tire molding drum 20, and when attaching the tire component A to the tire molding drum 20, After moving to the set position, the left and right two tire constituent members A are received by the member supply conveyor 12, transported by the member supply conveyor 12, the front end of the tire constituent member A is attached to the tire forming drum 20, and then the drum is rotated. If it does so, the tire structural member A will be affixed once.

  FIG. 2 is a diagram when the member supply conveyor is viewed from a direction orthogonal to the conveyance direction of the tire constituent members. A displacement sensor 31 that measures the distance to the position of the tire constituent member A (B) conveyed on the member supply conveyor 12 is installed above the member supply conveyor 12.

  FIG. 3 is a circuit configuration diagram of a control system for adjusting the transverse movement of the tire component supply device according to the present invention. A displacement sensor 31 that measures the distance to the position of the tire component conveyed by the member supply conveyor, and a cross section that creates a cross-sectional shape of the tire component from the distance data to the position of the tire component measured by the displacement sensor 31 The shape creation unit 32, the reference data storage unit 33 that stores the cross-sectional shape of the reference tire component, the cross-sectional shape of the tire component created by the cross-section creation unit 32, and the reference data storage unit 33. A comparison unit 34 that compares the cross-sectional shape of the tire component that is a reference, a calculation processing unit 35 that calculates a displacement of the tire component according to the comparison result, and a moving mechanism unit that moves the tire component supply device in a traverse direction 37 and a control unit 36 that controls the moving mechanism unit 37.

  The control unit 36 controls the movement mechanism unit 37 based on the displacement of the tire constituent member obtained by the arithmetic processing unit 35 to adjust the lateral position of the member supply conveyor. For the moving mechanism 37, an LM guide or the like combining a ball screw and a servo motor is used.

  Further, the tire component supply device according to the present invention reads the length of the tire component using a displacement sensor, compares it with reference data, and adjusts the conveying speed of the member supply conveyor if the length is excessive or insufficient. The tension applied to the tire constituent member is adjusted so that the length of the tire constituent member does not become excessive or insufficient at the time of application to the tire molding drum.

  FIG. 4 is a circuit configuration diagram of a control system for adjusting the conveyance speed of the member supply conveyor of the tire component supply device according to the present invention. A length measuring unit 38 for measuring the length of the tire constituent member from the distance data to the position of the tire constituent member measured by the displacement sensor 31 and a rotation driving unit (servo motor) 39 for driving the member supply conveyor are further provided. The reference data storage unit 33 stores the reference length data of the tire constituent member, and the comparison unit 34 stores the length of the tire constituent member measured by the length measuring unit 38 and the reference data storage unit 33. The calculation processing unit 35 calculates the rotation speed of the rotation drive unit 39 based on the comparison result, and the control unit 36 adjusts the rotation speed of the rotation drive unit 39 to supply a member. Adjust the conveyor speed.

As described above, the tire component supply device according to the present invention captures the cross-sectional shape of the tire component by the displacement sensor, compares it with the shape of the tire component serving as a reference, and the member supply conveyor according to the deviation of the tire component. Since the horizontal position of the is adjusted, manual fine adjustment by an operator is unnecessary. Moreover, since manual fine adjustment is not necessary, the attaching speed of the tire constituent member can be increased. In addition, since the worker only presses the tire constituent member, skill acquisition is facilitated.
In addition, since the sectional shape is simply captured by the displacement sensor and compared with the shape of the reference tire constituent member, the processing speed can be increased because the processing is simpler than the recognition by the image.
Moreover, since the tension applied to the tire constituent member is adjusted by adjusting the conveying speed of the member supply conveyor when the tire constituent member is attached to the tire molding drum, it is not necessary to reattach the tire constituent member. Furthermore, since the tension applied to the tire constituent member is adjusted at the time of sticking, the tire constituent member is not expanded or contracted by inching, and the variation in the thickness of the tire constituent member on the drum circumference can be reduced.

  Note that the tire component supply device of the present invention is preferably used for a tire molding drum for molding a large tire.

It is the figure which looked at the tire molding drum and the tire component supply device from above. It is a figure when a member supply conveyor is seen from the direction orthogonal to the conveyance direction of a tire structural member. It is a circuit block diagram of the control system which adjusts the transverse movement of the tire structural member supply apparatus which concerns on this invention. It is a circuit block diagram of the control system which adjusts the conveyance speed of the member supply conveyor of the tire structural member supply apparatus which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Tire component supply apparatus 11 Stock conveyor 12 Member supply conveyor 20 Tire molding drum 21 Center molding drum 22 Bladder 23 Side deck 31 Displacement sensor 32 Section shape creation part 33 Reference data storage part 34 Comparison part 35 Operation processing part 36 Control part 37 Movement mechanism part 38 Length measurement part 39 Rotation drive part

Claims (2)

A tire component supply device for supplying a tire component to a tire molding drum,
A displacement sensor that is installed at a position above a member supply conveyor that conveys a tire component on the tire molding drum, and that measures a distance to the position of the tire component that is conveyed by the member supply conveyor;
A cross-sectional shape creating section for creating a cross-sectional shape of the tire constituent member from the distance data to the position of the tire constituent member measured by the displacement sensor;
A reference data storage unit for storing a cross-sectional shape of a tire constituent member as a reference;
A comparison unit that compares the cross-sectional shape of the tire constituent member created by the cross-sectional shape creation unit with the cross-sectional shape of the tire constituent member that is a reference stored in the reference data storage unit;
An arithmetic processing unit that calculates the displacement of the tire constituent member according to the result of the comparison;
A moving mechanism for traversing the tire component supply device,
A control unit that controls the moving mechanism unit based on a deviation of the tire constituent member obtained by the arithmetic processing unit and adjusts a lateral position of the member supply conveyor;
A tire component supply device comprising: A length measuring unit for measuring the length of the tire constituent member from the distance data to the position of the tire constituent member measured by the displacement sensor;
A rotation drive unit for driving the member supply conveyor,
The reference data storage unit stores reference length data of a tire constituent member, and the comparison unit stores the length of the tire constituent member measured by the length measurement unit and a reference stored in the reference data storage unit. The calculation processing unit calculates the rotation speed of the rotation driving unit according to the comparison result, and the control unit adjusts the rotation speed of the rotation driving unit to convey the member supply conveyor. The tire component supply device according to claim 1, wherein a speed is adjusted.

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