Precise control structure for opening and closing positions of claw pieces

Abstract

The utility model discloses a claw piece opening and closing position accurate control structure, which belongs to the technical field of tire vulcanization auxiliary equipment and comprises a fixed disc with the axis as a first axis. The multiple movable blocks are arranged on the fixed disc and distributed in the circumferential direction; each moving block can move in the radial direction, one moving block is arranged to be a driving block, the driving block is connected with a driving assembly, and the other moving blocks are arranged to be driven blocks; each moving block is provided with a claw piece and a guide part, and the multiple claw pieces and the multiple guide parts are distributed in the circumferential direction. The rotating disc can rotate relative to the fixed disc; a plurality of guide long holes of which the length direction and the radial direction are intersected are formed in the rotating disc; the guide parts are embedded into the guide long holes and are in clearance fit with the guide long holes; the driving assembly can directly drive the driving block to move in the radial direction, meanwhile, the guiding part can drive the rotating disc to rotate through the guiding long hole, all the driven blocks can synchronously move in the radial direction, the opening and closing positions and the radial displacement amount of all the claw pieces are accurately controlled, and operation is easy.

Description

Technical Field

[0001] This utility model relates to the technical field of tire vulcanization auxiliary equipment, specifically to a structure for precise control of the opening and closing position of claw plates. Background Technology

[0002] In the tire vulcanization production process, a specialized robotic arm is required to load and unload tires. During the loading and unloading process, the radial displacement of the robotic arm's claws needs to be precisely and stably controlled. Furthermore, when the tire specifications change, the opening and closing position of the robotic arm's claws also needs to be further adjusted.

[0003] The opening and closing position control of the claws in existing robotic arms specifically designed for vulcanizing machines is not precise, resulting in significant measurement errors and potential safety hazards. Furthermore, the opening and closing position of the claws usually requires manual adjustment, and the adjustment methods are complex, cumbersome, time-consuming, and labor-intensive, which affects the production efficiency of tire vulcanization.

[0004] Therefore, developing a precise control structure that can accurately control the opening and closing position and radial displacement of the claw without manual measurement and adjustment, is easy to install, safe to use, and simple to operate is an urgent problem to be solved at present. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a precise control structure for the opening and closing position of the claw plates. One of the multiple moving blocks is designated as the driving block, while the others are driven blocks. The guide parts on each moving block engage with the guide holes on the rotating disk. The driving assembly can drive the driving block to move directly radially, enabling convenient and precise control of the opening and closing position and radial displacement of the claw plates on the driving block. When the driving block moves radially, the guide parts on the driving block drive the rotating disk to rotate through the guide holes. Simultaneously, the rotating disk drives all the driven blocks to move radially synchronously, thus enabling precise control of the opening and closing position and radial displacement of the claw plates on all the driven blocks. No manual measurement or adjustment is required; installation is convenient, use is safe, and operation is simple.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This utility model provides a structure for precise control of the opening and closing position of the claw, including:

[0008] A fixed disk, wherein the axis of the fixed disk is set as a first axis;

[0009] Multiple movable blocks are disposed on the fixed disk and distributed circumferentially along the first axis. Each movable block is capable of radial movement along the first axis. One movable block is a driving block connected to a driving assembly that drives its movement, while the other movable blocks are driven blocks. Each movable block is provided with a claw and a guide portion, and the claw and the guide portion are distributed circumferentially along the first axis.

[0010] A rotating disk is rotatable relative to the fixed disk about the first axis; the rotating disk is provided with guide holes corresponding to the guide portions one by one, the length direction of the guide holes intersects the radial direction of the first axis, and the guide portions are embedded in the guide holes and are clearance-fitted with the guide holes.

[0011] As a preferred technical solution, the drive component is configured as a servo electric cylinder, and the output shaft of the servo electric cylinder is connected to the drive block.

[0012] As a preferred technical solution, the output shaft of the servo electric cylinder is provided with a connecting pin, and the drive block is provided with a pin hole that matches the connecting pin. The cross-section of the pin hole is an elongated hole shape.

[0013] As a preferred technical solution, the length direction of the elongated hole is parallel to the first axis.

[0014] As a preferred technical solution, the drive component is connected to a controller.

[0015] As a preferred technical solution, the guide part includes a guide rod fixed on the moving block and a connecting bearing disposed on the guide rod. The inner ring of the connecting bearing is fixedly connected to the guide rod, and the outer ring of the connecting bearing is embedded in the guide elongated hole. The outer peripheral surface of the connecting bearing and the two inner walls of the guide elongated hole extending along its length are clearance fitted.

[0016] As a preferred technical solution, the length direction of the guide hole is arc-shaped.

[0017] As a preferred technical solution, the fixed disk is horizontally arranged, the movable block is located below the fixed disk, and the rotating disk is located below the movable block; the fixed disk is provided with an annular guide groove, and the rotating disk is provided with a plurality of circumferentially distributed guide blocks, all of which cooperate with the guide groove.

[0018] As a preferred technical solution, the fixed disk is provided with a guide rail at the position of each of the moving blocks, and the moving blocks are disposed on the guide rails and can move along the guide rails.

[0019] As a preferred technical solution, the number of moving blocks is set to 6 or 8.

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. In this utility model, one of the multiple moving blocks is designated as a driving block, while the others are driven blocks. The guide parts on the moving blocks all mate with the guide elongated holes on the rotating disk. The driving assembly can drive the driving block to move directly radially, enabling convenient and precise control of the opening and closing position and radial displacement of the claw plates on the driving block. When the driving block moves radially, the guide parts on the driving block can drive the rotating disk to rotate through the guide elongated holes. Simultaneously, the rotating disk can drive all the driven blocks to move radially synchronously. Furthermore, the axis of the output shaft of the servo electric cylinder is collinear with the radial movement direction of the driving block. The radial displacement range of the driving block is the opening and closing position of the claw plates, thus enabling precise control of the opening and closing position and radial displacement of the claw plates on all the driven blocks. No manual measurement or adjustment is required. It is easy to install, safe to use, and simple to operate, and is suitable for various small and medium-sized tire shaping and vulcanizing machines.

[0022] 2. The output shaft of the servo electric cylinder of this utility model is connected to the drive block by a connecting pin. The pin hole on the drive block that matches the connecting pin is in the shape of an elongated hole. The elongated hole can expand the range of the connecting pin's insertion into the drive block, which facilitates the connection between the output shaft of the servo electric cylinder and the drive block. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the claw plate opening and closing position precise control structure of this utility model;

[0024] Figure 2 for Figure 1 Enlarged view of region A in the middle;

[0025] Figure 3 for Figure 1 A bottom view;

[0026] Figure 4 for Figure 1 A schematic diagram of the structure of the driving block in the diagram;

[0027] Figure 5 for Figure 1 A schematic diagram of the connecting pin in the middle;

[0028] Figure 6 for Figure 1 A schematic diagram of the driven block in the diagram.

[0029] In the figure: 1-fixed disk, 11-guide groove, 12-guide rail, 2-moving block, 21-drive block, 211-drive assembly, 212-connecting pin, 213-pin hole, 22-driven block, 23-claw plate, 24-guide part, 241-guide rod, 242-connecting bearing, 3-rotating disk, 31-guide elongated hole, 32-guide block. Detailed Implementation

[0030] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0031] Please refer to Figures 1-6 This invention provides an embodiment of a precise control structure for the opening and closing position of a claw plate, comprising a fixed disk 1, multiple movable blocks 2 disposed on the fixed disk 1 and distributed circumferentially along a first axis, each movable block 2 capable of radial movement along the first axis, and each movable block 2 provided with a claw plate 23 and a guide portion 24; a rotating disk 3 disposed on the fixed disk 1 and capable of rotating relative to the fixed disk 1 around the first axis, the rotating disk 3 provided with guide elongated holes 31 corresponding one-to-one with the guide portions 24, the length direction of the guide elongated holes 31 intersecting the radial direction of the first axis, and the guide portions 24 being embedded in the guide elongated holes 24. The guide 24 is fitted with a clearance within the hole 31 and the guide elongated hole 31. When one guide part 24 moves radially, it can drive the rotating disk 3 to rotate through the guide elongated hole 31. When the rotating disk 3 rotates, it can drive all the moving blocks 2 to move radially synchronously through the guide elongated hole 31 and the guide part 24. Specifically, one of the moving blocks 2 is set as a driving block 21. The driving component 211 can directly drive the driving block 21 to move radially. The other moving blocks 2 are all set as driven blocks 22. By adjusting the synchronous radial movement process of the moving blocks 2, that is, adjusting the opening and closing position and radial displacement of the claw 23.

[0032] For any further explanation, please refer to [link / reference]. Figure 1 and Figure 3 Both the fixed disk 1 and the rotating disk 3 are circular and horizontally arranged. The first axis is the axis of the rotating disk 3, and the fixed disk 1 and the rotating disk 3 are coaxially arranged, which facilitates installation and use.

[0033] For further details, please refer to Figure 3 In order to ensure that the claw 23 can stably grip the tire, the number of moving blocks 2 is preferably set to 8; in other embodiments, the number of moving blocks 2 can be set to 6 or other numbers, as long as the number of claw 23 is sufficient to ensure stable gripping of the tire.

[0034] In this embodiment, please refer to Figure 1 and Figure 2The drive component 211 is configured as a servo electric cylinder, and the output shaft of the servo electric cylinder is connected to the drive block 21. The axis of the output shaft of the servo electric cylinder is collinear with the radial movement direction of the drive block 21, which can accurately drive the drive block 21 to move radially. The radial displacement range of the drive block 21 is the opening and closing position of the claw 23. In other embodiments, the drive component 211 can also be configured as a cylinder or a lead screw stepper motor, as long as it can stably and accurately control the radial movement position of the drive block 21.

[0035] For further details, please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 The output shaft of the servo electric cylinder is provided with a connecting pin 212, and the drive block 21 is provided with a pin hole 213 that matches the connecting pin 212. The connecting pin 212 passes through the pin hole 213 and both ends of the connecting pin 212 are fixedly connected to the output shaft of the servo electric cylinder, thereby realizing the connection between the output shaft of the servo electric cylinder and the drive block 21. Furthermore, the cross-section of the pin hole 213 is preferably in the shape of an elongated hole, and the length direction of the elongated hole is set vertically and parallel to the first axis, which can expand the position range of the connecting pin 212 inserted into the drive block 21, making the connection between the output shaft of the servo electric cylinder and the drive block 21 more convenient and stable.

[0036] It should be noted that the drive component 211 should be connected to a controller. The controller, as a host computer, can easily control the switching and working intensity of the drive component 211. Specifically, by directly inputting adjustment parameters into the controller, the servo electric cylinder can extend and retract by the corresponding distance, thereby driving the radial opening and closing of all the claw plates 23. This achieves precise control of the radial displacement of the claw plates 23, reducing the deviation caused by manual measurement and adjustment.

[0037] In this embodiment, please refer to Figure 3 Preferably, the length direction of the guide hole 31 is arc-shaped, and the tangent at any point of the arc should form an angle with the radial direction. During the rotation of the rotating disk 3, the guide hole 31 can smoothly guide the moving block 2 to move radially. In other embodiments, the length direction of the guide hole 31 can also be a straight line, as long as it can guide the moving block 2 to move radially smoothly.

[0038] For further details, please refer to Figure 3The guide part 24 includes a guide rod 241 fixed on the moving block 2 and a connecting bearing 242 provided on the guide rod 241. The inner ring of the connecting bearing 242 is fixedly connected to the guide rod 241, and the outer ring of the connecting bearing 242 is embedded in the guide elongated hole 31. The outer circumferential surface of the outer ring of the connecting bearing 242 and the two inner walls of the guide elongated hole 31 extending along its length are in clearance fit. When the guide part 24 reciprocates in the guide elongated hole 31, the connecting bearing 242 and the inner wall of the guide elongated hole 31 undergo rolling friction, which effectively reduces the friction force and ensures smooth relative movement between the moving block 2 and the rotating disk 3.

[0039] In this embodiment, please refer to Figure 1 and Figure 2 The movable block 2 is located below the fixed disk 1, and the rotating disk 3 is located below the movable block 2. The fixed disk 1 is provided with an annular guide groove 11, and the rotating disk 3 is provided with several circumferentially distributed guide blocks 32. The surface of the guide block 32 is in clearance fit with the surface of the guide groove 11, which enables the rotating disk 3 to rotate stably relative to the fixed disk 1 and will not interfere with the radial movement of the claw 23.

[0040] For further details, please refer to Figure 1 and Figure 2 Each fixed disk 1 is provided with a guide rail 12 at the position of each movable block 2. The movable block 2 is located on the guide rail 12 and can move along the guide rail 12, so as to realize the radial movement of the movable block 2 relative to the fixed disk 1 along the first axis.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A structure for precisely controlling the opening and closing position of a claw, characterized in that, include: Fixed disk (1), wherein the axis of the fixed disk (1) is set as the first axis; Multiple movable blocks (2) are disposed on the fixed disk (1) and are distributed circumferentially along the first axis. Each movable block (2) is capable of radial movement along the first axis. One of the movable blocks (2) is configured as a driving block (21) and is connected to a driving component (211) for driving its movement. The other movable blocks (2) are configured as driven blocks (22). Each movable block (2) is provided with a claw (23) and a guide (24). The multiple claws (23) and the multiple guides (24) are distributed circumferentially along the first axis. A rotating disk (3) is capable of rotating relative to the fixed disk (1) around the first axis; the rotating disk (3) is provided with guide holes (31) corresponding to the guide parts (24) one by one, the length direction of the guide holes (31) intersects the radial direction of the first axis, and the guide parts (24) are embedded in the guide holes (31) and are in clearance fit with the guide holes (31).

2. The claw plate opening and closing position precise control structure according to claim 1, characterized in that, The drive assembly (211) is configured as a servo electric cylinder, and the output shaft of the servo electric cylinder is connected to the drive block (21).

3. The claw plate opening and closing position precise control structure according to claim 2, characterized in that, The output shaft of the servo electric cylinder is provided with a connecting pin (212), and the drive block (21) is provided with a pin hole (213) that matches the connecting pin (212). The cross-section of the pin hole (213) is an elongated hole.

4. The claw plate opening and closing position precise control structure according to claim 3, characterized in that, The length direction of the elongated hole is parallel to the first axis.

5. A precise control structure for the opening and closing position of a claw plate according to claim 1 or 2, characterized in that, The drive component (211) is connected to a controller.

6. The claw plate opening and closing position precise control structure according to claim 1, characterized in that, The guide part (24) includes a guide rod (241) fixed on the moving block (2) and a connecting bearing (242) provided on the guide rod (241). The inner ring of the connecting bearing (242) is fixedly connected to the guide rod (241), and the outer ring of the connecting bearing (242) is embedded in the guide elongated hole (31). The outer circumferential surface of the outer ring of the connecting bearing (242) is clearance-fitted with the two inner walls of the guide elongated hole (31) extending along its length direction.

7. A precise control structure for the opening and closing position of a claw plate according to claim 1 or 6, characterized in that, The length of the guide hole (31) is arc-shaped.

8. The claw plate opening and closing position precise control structure according to claim 1, characterized in that, The fixed disk (1) is horizontally arranged, the moving block (2) is located below the fixed disk (1), and the rotating disk (3) is located below the moving block (2); the fixed disk (1) is provided with an annular guide groove (11), and the rotating disk (3) is provided with a plurality of circumferentially distributed guide blocks (32), and the guide blocks (32) all cooperate with the guide groove (11).

9. The claw plate opening and closing position precise control structure according to claim 1, characterized in that, The fixed disk (1) is provided with a guide rail (12) at the position of each of the moving blocks (2), and the moving blocks (2) are provided on the guide rail (12) and can move along the guide rail (12).

10. The claw plate opening and closing position precise control structure according to claim 1, characterized in that, The number of moving blocks (2) is set to 6 or 8.

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