A clamping control method, system, computer device, medium and program product

Abstract

The present invention relates to the field of tire manufacturing, and in particular to a clamping control method, system, computer device, medium, and program product, wherein the clamping control method includes the following steps: a control module provides a first parameter to a servo controller; the servo controller controls the action of a servo motor based on the first parameter, and the servo motor drives the clamping plate to move inward to perform a first clamping action; after the clamping plate reaches a target position, a detection module sends a feedback signal to the control module; the control module provides a second parameter to the servo controller; the servo controller controls the action of a servo motor based on the second parameter, and the servo motor drives the clamping plate to move inward to perform a second clamping action. The advantage of the present invention is that after the laminating drum contracts, the clamping plate performs a secondary clamping, that is, the clamping plate moves inward again a short distance to further clamp the tire carcass composite, preventing the tire carcass composite from collapsing inward and ensuring tire quality.

Description

Technical Field

[0001] The present invention relates to the field of tire manufacturing, and in particular to a clamping control method, system, computer equipment, medium and program product. Background Art

[0002] During the tire production process, the various materials that make up the tire carcass are layered and wound around the outer circumference of the laminating drum. The drum's radial expansion allows these materials to be laminated to form the carcass composite. After lamination, the drum remains expanded, locking the inner circumference of the carcass composite against the drum. A transfer ring then clamps the carcass composite on the drum from the outer circumference and transfers it for subsequent tire production.

[0003] The applicant's Chinese utility model patent (publication number: CN205416425U, publication date: 201608030) discloses a transfer ring device for a tire building machine. The device comprises multiple clamping devices arranged in a circular array. Each clamping device has a clamping plate that can move radially, and each clamping plate is driven by a corresponding servo motor. During operation, the transfer ring device drives the corresponding clamping plate inward, causing the clamping plate to contact the outer circumference of the carcass composite and secure the carcass composite. The laminating drum then contracts, retaining the carcass composite on the transfer ring device, enabling the transfer ring device to transport (transfer) the carcass composite.

[0004] During the use of the aforementioned transfer ring device, the applicant discovered the following problem: Due to the internal tension of the carcass material during the lamination process, when the laminating drum contracts inward, the carcass composite loses its internal support and collapses inward. Specifically, after the laminating drum contracts inward, the carcass composite collapses inward on the transfer ring device, hindering the transfer of the carcass composite and affecting the concentricity of the subsequent lamination process, thereby reducing tire quality. Summary of the Invention

[0005] In order to solve the problem that the existing clamping plate only clamps once, causing the carcass composite to collapse, the first purpose of the present invention is to provide a clamping control method for the transfer ring of a tire building machine. After the bonding drum shrinks, the clamping plate performs a second clamping to prevent the carcass composite from collapsing inward and ensure the quality of the tire.

[0006] For the first purpose of the present invention, the following technical solutions are adopted:

[0007] A method for controlling the clamping of a transfer ring of a tire building machine comprises the following steps:

[0008] The control module provides a first parameter to the servo controller;

[0009] The servo controller controls the action of the servo motor according to the first parameter, and the servo motor drives the clamping plate to move inward to perform the first clamping action;

[0010] After the clamping plate reaches the target position, the detection module sends a feedback signal to the control module;

[0011] The control module provides a second parameter to the servo controller;

[0012] The servo controller controls the action of the servo motor according to the second parameter, and the servo motor drives the clamping plate to move inward to perform a second clamping action.

[0013] Preferably, the servo controller switches the servo motor to a torque mode according to a first parameter, and switches the servo motor to a position mode according to a second parameter.

[0014] Preferably, the first parameter includes torque and rotation direction; the second parameter includes number of revolutions and rotation direction.

[0015] Preferably, the first parameter also includes a rotational speed.

[0016] Preferably, the rotation speed varies with the distance between the zero position and the target position, and the closer to the target position, the slower the rotation speed.

[0017] Preferably, when the clamping plate performs the second clamping action, the distance the clamping plate moves is 3-5 mm.

[0018] A second object of the present invention is to provide a clamping control system for a transfer ring of a tire building machine, comprising:

[0019] A control module, configured to provide a first parameter to the servo controller according to an external input, and to provide a second parameter to the servo controller according to a feedback signal;

[0020] A servo controller, configured to control corresponding actions of the servo motor according to the first parameter and the second parameter;

[0021] Servo motor, used to drive the clamping plate to move;

[0022] A clamping plate is connected to the output shaft of the servo motor and is used to clamp the carcass composite;

[0023] The detection module is used to detect the position of the clamping plate and send a feedback signal to the control module.

[0024] A third object of the present invention is to provide a computer device comprising a memory, a processor and a computer program stored in the memory, wherein the processor executes the computer program to implement the above method.

[0025] A fourth object of the present invention is to provide a computer-readable storage medium having a computer program or instruction stored thereon, which implements the above method when the computer program or instruction is executed by a processor.

[0026] A fifth object of the present invention is to provide a computer program product comprising a computer program or instructions, which implement the above method when executed by a processor.

[0027] To sum up, the advantage of the present invention is that after the bonding drum shrinks, the clamping plate performs secondary clamping under the action of the servo motor, that is, the clamping plate moves inward a small distance again to further clamp the carcass composite, preventing the carcass composite from collapsing inward and ensuring the quality of the tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the structure of the transfer ring device.

[0029] Figure 2 Schematic diagram of the clamping device.

[0030] Figure 3 Schematic diagram of the clamping control system. DETAILED DESCRIPTION

[0031] Figure 1 Figure 2 shows a schematic diagram of the structure of a conventional transfer ring device. The device comprises a base 10 at the bottom, a ring-shaped mounting frame 20 mounted on the base 10, and a plurality of clamping devices 30 arranged in a circular array on the mounting frame 20. A clamping plate 34 is provided at the output end of the clamping device 30. The clamping plate 34 is positioned toward the center of the mounting frame 20 and can be displaced radially to tighten or loosen the carcass composite. The base 10 is mounted on a transfer track (not shown) and moves along the track to transfer the clamped carcass composite.

[0032] Figure 2The schematic diagram of the clamping device 30 shows the structure of the clamping device 30, which includes a base plate 31 fixed to the mounting frame 20, a servo motor 32 fixed to the base plate, a transmission mechanism 33 connected to the output shaft of the servo motor 32, and a clamping plate 34 mounted on the transmission mechanism 33. The transmission mechanism 33 converts the rotational motion of the servo motor 32 into linear motion, thereby driving the clamping plate 34 to move linearly along the radial direction of the mounting frame 20. Specifically, the transmission mechanism 33 can be a screw, a gear rack, or the like. The inner surface of the clamping plate 34 (the surface facing the center of the mounting frame 20) is generally arc-shaped. Generally, the curvature of this arc matches the curvature of the mounting frame 20, so that when several clamping plates 34 are moved, they form a circle concentric with the mounting frame 20. The inner surface of the clamping plate 34 is provided with a plurality of protruding needles 341. When clamped, the needles 341 penetrate the outer circumference of the carcass composite, thereby better securing the carcass composite.

[0033] The remaining structure of the transfer ring device refers to the content disclosed in the applicant's Chinese utility model patent (publication number: CN205416425U, publication date: 201608030).

[0034] Based on the above structure, it should be noted that the servo motor 32 of the present application has a servo controller, which controls the servo motor 32 so that it has a torque mode and a position mode.

[0035] Torque mode sets the output torque of the output shaft through external analog input or direct address assignment. Specifically, when servo motor 32 is in use, the output shaft delivers a constant torque. When the output shaft load is less than the set torque (which can be a specific value or a range of values), servo motor 32 rotates forward. When the load exceeds the set torque, servo motor 32 rotates reversely. Of course, when the load equals the set torque, servo motor 32 does not rotate.

[0036] Position mode involves sending high-speed pulses of a certain frequency through the host computer, combined with a direction signal, to achieve forward and reverse rotation of the servo motor 32. The number of pulses corresponds to the angle of rotation of the output shaft, thereby controlling the displacement of the clamping plate 34. The pulse frequency corresponds to the output shaft's rotational speed, thereby controlling the displacement speed of the clamping plate 34. The host computer can be a PLC, a single-chip microcomputer, or a manual pulse generator.

[0037] The servo motor 32 outputs the corresponding torque, speed, rotation direction, and number of revolutions according to the servo controller's instructions. The transmission mechanism 33 converts this rotational motion into output force, displacement, and velocity of the clamping plate 34. In torque mode, the servo controller primarily outputs torque and rotation direction. In position mode, the servo controller primarily outputs rotation direction and number of revolutions.

[0038] In addition, the transfer ring device also includes a control module that controls the action of the clamping device 30. The control module is usually a computer device or a computer program. The control module is used to receive external input signals (such as tire clamping instructions) and provide the corresponding first parameters to the servo controller based on the input signals. After the first parameters are read by the servo controller, the servo controller switches the servo motor 32 to the torque mode, thereby giving the output shaft the corresponding torque and rotation direction, and finally drives the clamping plate 34 to move linearly through the transmission mechanism 33 to achieve the clamping action. Since the torque mode is adopted, when the clamping plate 34 is tightly attached to the outer peripheral surface of the tire composite and the pressure between the clamping plate 34 and the tire composite is equal to the torque of the output shaft, the output shaft will stop rotating, that is, the clamping plate 34 stops linear displacement.

[0039] In the prior art, the carcass composite is clamped only once using the torque mode of the servo controller. This can cause tension during material lamination, leading to inward contraction of the composite due to tension when the laminating drum contracts, causing the composite to collapse on the transfer ring. To address this issue, the present application performs a secondary clamping action after the primary clamping action. Specifically, after the laminating drum contracts, the servo controller switches the servo motor to position mode, causing the clamping block to perform another linear displacement, contracting the entire assembly inward by a certain distance (e.g., 3-5 mm). This ensures concentricity, resolves the composite collapse issue, and improves product quality.

[0040] To achieve this goal, the clamping device 30 is equipped with a detection module that detects whether the clamping plate 34 is clamped in place or whether the torque of the servo motor 32 output shaft has reached a set value. When the detection module detects that the clamping plate 34 is clamped in place or the torque of the servo motor 32 output shaft has reached a set value, the detection module sends a feedback signal to the control module. When the control module receives the feedback signal, it indicates that the clamping plate 34 has reached the clamping position. The control module then sends a second parameter to the servo controller. After the servo controller reads the second parameter, the servo controller switches the servo motor 32 to position mode, thereby assigning the corresponding number of revolutions (i.e., the displacement of the clamping plate 34) and rotation direction to the output shaft. Finally, the transmission mechanism 33 drives the clamping plate 34 to move linearly again, performing a secondary clamping of the carcass composite, preventing the carcass composite from collapsing inward and ensuring concentricity.

[0041] Furthermore, it should be noted that before the transfer ring device begins clamping the tire, or if pulse drift occurs during operation, a zero-point search step is performed to correct for accumulated deviations during operation, achieving high-precision tire clamping or release. Specifically, the zero-point search step requires resetting the clamping plate 34 to a zero position. The so-called zero position is generally the starting point of the clamping plate 34, which is relatively far from the center of the mounting frame 20. A zero-point determination module (typically a photoelectric sensor) is positioned at this position. This module determines whether the clamping plate is at the zero position. If it is not, the control module sends a zero-point search signal to the servo controller, which drives the servo motor 32 to move the clamping plate 34 to the zero position.

[0042] Since there is a distance between the zero position and the target position (i.e., the position where the tire is clamped for the first time, which may not be the same due to different specifications of the tire composite material), in order to improve the clamping efficiency, corresponding parameters can be input into the control module or servo controller so that the farther the clamping plate is from the target position, the faster the movement speed; the closer the clamping plate is to the target position, the slower the movement speed. This can also reduce the impact of the clamping block on the tire composite.

[0043] The following describes the clamping control method:

[0044] First, the zero point search step is performed. The zero point judgment module determines whether the clamping plate is at the zero point position. If the clamping plate is not at the zero point position, the control module sends a zero point search signal to the servo controller, which drives the servo motor to move the clamping plate to the zero point position.

[0045] Based on external input, the control module then provides the servo controller with a first parameter, which includes torque and rotation direction, and assigns a rotational speed based on the distance between the zero position and the target position. Based on the first parameter, the servo controller switches the servo motor to torque mode, driving the clamping plate inward to perform the clamping action.

[0046] When the clamping plate reaches the target position, the detection module sends a feedback signal to the control module, indicating that the tire is clamped in place. The first clamping action is completed.

[0047] Wait for the laminating drum to shrink. Once the drum shrinks, the control module sends a second parameter to the servo controller, which includes the number of revolutions and the direction of rotation. Based on this second parameter, the servo controller switches the servo motor to position mode, which drives the clamping plate to clamp again. The clamping plate moves inward another 3-5 mm, re-clamping the carcass composite to prevent internal collapse.

[0048] The above is a description of the embodiments of the present invention. The above description of the disclosed embodiments will enable professionals in the field to implement or use the present invention. Various modifications to these embodiments will be apparent to professionals in the field. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for controlling the clamping of a transfer ring of a tire building machine, characterized in that: The following steps are involved: First, the zero point search step is performed. The zero point judgment module determines whether the clamping plate is at the zero point position. If the clamping plate is not at the zero point position, the control module sends a zero point search signal to the servo controller, and the servo controller drives the servo motor to move the clamping plate to the zero point position. Then, the control module provides a first parameter to the servo controller based on external input. The first parameter includes torque and rotation direction, and assigns a rotation speed based on the distance between the zero position and the target position. The servo controller switches the servo motor to a torque mode based on the first parameter, and the servo motor drives the clamping plate to move inward to perform a clamping action. When the clamping plate reaches the target position, the detection module sends a feedback signal to the control module, indicating that the tire is clamped in place; the first tire clamping action is completed; Wait for the laminating drum to shrink. When the laminating drum shrinks, the control module sends a second parameter to the servo controller, which includes the number of revolutions and the direction of rotation. The servo controller switches the servo motor to position mode based on the second parameter. The servo motor drives the clamping plate to clamp again. The clamping plate continues to move inward 3-5 mm to clamp the carcass composite again to prevent internal collapse. The so-called torque mode means: the output torque of the output shaft is set by inputting external analog quantities or directly assigning values ​​to addresses; that is, when the servo motor is in use, the output shaft outputs at a constant torque. When the output shaft load is less than the set torque, the servo motor rotates forward; when the load is greater than the set torque, the servo motor rotates reversely; of course, when the load is equal to the set torque, the servo motor does not rotate. The so-called position mode means: high-speed pulses of a certain frequency are sent by the host computer, combined with the direction signal to realize the forward and reverse rotation of the servo motor; the number of pulses corresponds to the angle of rotation of the output shaft, that is, the displacement of the clamping plate is controlled; the frequency of the pulses corresponds to the speed of the output shaft, that is, the displacement speed of the clamping plate is controlled.

2. The clamping control method according to claim 1, characterized in that: The first parameter also includes the rotational speed.

3. The clamping control method according to claim 2, characterized in that: The speed changes with the distance between the zero position and the target position. The closer to the target position, the slower the speed.

4. A clamping control system for a transfer ring of a tire building machine, characterized in that: The system is used to implement the method described in any one of claims 1 to 3, including: A control module, configured to provide a first parameter to the servo controller according to an external input, and to provide a second parameter to the servo controller according to a feedback signal; A servo controller, configured to control corresponding actions of the servo motor according to the first parameter and the second parameter; Servo motor, used to drive the clamping plate to move; A clamping plate is connected to the output shaft of the servo motor and is used to clamp the carcass composite; The detection module is used to detect the position of the clamping plate and send a feedback signal to the control module.

5. A computer device comprising a memory, a processor, and a computer program stored in the memory, characterized in that: The processor executes the computer program to implement the method according to any one of claims 1 to 3.

6. A computer-readable storage medium having a computer program or instruction stored thereon, characterized in that: When the computer program or instruction is executed by a processor, the method according to any one of claims 1 to 3 is implemented.

7. A computer program product comprising a computer program or instructions, characterized in that When the computer program or instruction is executed by a processor, the method according to any one of claims 1 to 3 is implemented.

Images