Fork-shaped piece clamping device

Abstract

The utility model relates to the technical field of clamping tools, in particular to a fork-shaped part clamping device which comprises a connecting arm, a mounting plate and a mounting seat, the connecting arm is fixedly connected with the mounting seat through the mounting plate, two opposite supporting blocks are arranged on the mounting seat in a sliding structure mode, and two opposite clamping blocks are arranged on the mounting seat in a sliding structure mode. The opening part of the fork-shaped part is oppositely supported by arranging the supporting block, then the rear part of the fork-shaped part is clamped by utilizing the clamping block, and the clamping stability is ensured in a mode of tightly supporting the front part and clamping the rear part; the mounting base is provided with a first transmission structure used for driving the supporting block to reciprocate in the vertical direction and a second transmission structure used for driving the clamping block to reciprocate in the vertical direction, and the second transmission structure is connected with the mounting base. And one power piece is used for driving the supporting block and the clamping block to move through the first transmission structure and the second transmission structure correspondingly, good action synchronism is achieved, and meanwhile cost is saved.

Description

Technical fields:

[0001] This application relates to the field of clamping tooling technology, and in particular to a fork-shaped clamping device. Background technology:

[0002] As the name suggests, a fork-shaped component is a mechanical element shaped like a fork. It typically consists of two or more branches that intersect at a point to form a fork-like structure. Fork-shaped components have wide applications in mechanical design, such as... Figure 7 As shown, the boom beam produced by the company needs to be welded together with the boom box A and the beam body C. At the same time, a fork-shaped part B also needs to be welded to the sleeve of the boom box A to serve as a connection, positioning, support and fixation.

[0003] Patent application CN201810593245.8—a reversing gripper robot—comprises a reversing structure, a locking structure, and a gripping arm. The reversing structure includes two connecting arms, three horizontal reversing joints, a set of connecting plates, and one vertical reversing joint. The locking structure includes a locking handle, an upper locking post, and a lower locking post. The vertical reversing joint includes a rotating shaft, a bearing sleeve, and a first bearing. This invention, through three horizontal reversing joints and one vertical reversing joint, has a simplified structure, requires no power drive, and can achieve rotation of the gripping arm at a certain angle in both the horizontal and vertical planes. The rotation process is flexible, and the gripping arm is precisely positioned in both the vertical and horizontal planes.

[0004] The clamping arm in this patent is not stable enough for holding the fork-shaped parts. During the transfer process, the fork-shaped parts are prone to falling off, which reduces production efficiency. In addition, the fork-shaped parts are prone to displacement on the clamping arm, which affects the precise matching with subsequent workpieces and cannot meet the assembly requirements of the fork-shaped parts. Utility Model Content:

[0005] To solve the above-mentioned technical problems, this utility model provides a fork-shaped component clamping device. The technical problem it solves is that existing clamping devices are not stable enough in clamping fork-shaped components, and they are prone to falling off during transport. To solve the above-mentioned technical problems, the technical solution adopted by this utility model is:

[0006] A fork-shaped clamping device, characterized in that it comprises:

[0007] The connecting arm, mounting plate, and mounting base are connected together;

[0008] Support blocks, two support blocks are connected to the mounting base by a sliding structure;

[0009] A first transmission structure for driving the support block to reciprocate vertically is connected to the mounting base.

[0010] Two clamping blocks are connected to the mounting base via a sliding structure.

[0011] A second transmission structure is used to drive the clamping block to reciprocate vertically, and the second transmission structure is connected to the mounting base;

[0012] The power component is connected to the first transmission structure and the second transmission structure.

[0013] Furthermore, the first transmission structure includes a drive arm connected to the power component, and inclined surfaces A are provided on both sides of the front end of the drive arm;

[0014] Both support blocks have inclined surfaces A' on their opposite sidewalls that fit against the inclined surface A. The inclined surfaces A' and A slide together to allow the two support blocks to move outward.

[0015] It is also equipped with a return spring that drives the two support blocks to move inward.

[0016] Furthermore, a mounting groove is provided inside the drive arm, and a pressure claw is connected to the mounting groove. The middle part of the pressure claw is connected to the side wall of the mounting groove through a hinge structure, and the lower part of the pressure claw is connected to the mounting base through a hinge structure.

[0017] The mounting base is equipped with a pawl by means of a hinge structure. The pawl has a slide groove A and a slide groove B. The slide groove A is equipped with a shaft A by means of a sliding structure. The shaft A is connected to the drive arm.

[0018] A shaft B is installed in the slide groove B in a sliding structure. A drive rod B is connected to the shaft B and is connected to the power component.

[0019] A baffle is fixedly installed at the bottom of the mounting base.

[0020] Furthermore, the outside of the pawl is provided with a through hole that connects to the slide groove A. An adjusting bolt is provided in the through hole by means of thread engagement. A compression spring is sleeved on the outside of the adjusting bolt, and the lower end of the compression spring abuts against the outside of the shaft A.

[0021] Furthermore, a clamping spring is connected between the two clamping blocks, and a cylinder is provided on the inner wall of the two clamping blocks by means of a fixed structure. A groove is provided on the inner side of the cylinder, and the two grooves are inclined surfaces B with an inclined structure on opposite side walls.

[0022] The second transmission structure includes a drive rod A disposed between two inclined surfaces B. Inclined surfaces B' are provided on both sides of the drive rod A to fit against the inclined surfaces B. The inclined surfaces B' slide against the inclined surfaces B to move the two clamping blocks outward.

[0023] Furthermore, the drive rod A has a plane that slides in conjunction with the horizontal surface of the groove.

[0024] Furthermore, the mounting plate is connected to drive rods A and B in a sliding structure, and a push plate is provided through the mounting plate to drive rods A and B, which is connected to the power component.

[0025] Furthermore, the power component is a cylinder.

[0026] The beneficial effects of this utility model are:

[0027] By setting support blocks to support the opening of the fork-shaped part, and then using clamping blocks to clamp the rear of the fork-shaped part, the stability of clamping is ensured through the front-supported and rear-clamped mode. Furthermore, by using a power component to drive the support blocks and clamping blocks through the first transmission structure and the second transmission structure respectively, the movement has good synchronization and saves costs. Attached image description:

[0028] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0029] Figure 2 This is a schematic diagram of the exploded structure of part of this utility model.

[0030] Figure 3 This is a schematic diagram of the structure of this utility model in its unclamped state, viewed from the left.

[0031] Figure 4 This is a utility model Figure 3 Schematic diagram of the cross-sectional structure of AA.

[0032] Figure 5 This is a schematic diagram of the cross-sectional structure of the fork-shaped component after clamping.

[0033] Figure 6 This is a three-dimensional structural schematic diagram of an embodiment of the present utility model.

[0034] Figure 7 This is a schematic diagram of the fork-shaped component of this utility model installed on the boom.

[0035] In the picture:

[0036] 1. Connecting arm; 2. Mounting plate; 3. Mounting seat; 4. Support block; 5. Clamping block; 6. Power component; 7. Push plate; 8. First transmission structure; 81. Drive arm; 82. Inclined surface A; 83. Inclined surface A'; 84. Return spring; 85. Mounting groove; 9. Second transmission structure; 91. Drive rod A; 92. Inclined surface B'; 93. Plane; 10. Pressure claw; 11. Pulley; 12. Slide groove A; 13. Slide groove B; 14. Shaft A; 15. Shaft B; 16. Drive rod B; 17. Baffle; 18. Inclined surface B; 19. Adjusting bolt; 20. Compression spring; 21. Clamping spring; 22. Cylinder. Detailed implementation method:

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the utility model will now be described in further detail with reference to the accompanying drawings and the following embodiments, so that the public can better understand the implementation method of this utility model. The specific implementation scheme of this utility model is as follows:

[0038] A fork-shaped clamping device includes a connecting arm 1, a mounting plate 2, and a mounting base 3. The connecting arm 1 is fixedly connected to the mounting base 3 via the mounting plate 2. The mounting base 3 has two opposing support blocks 4 and two opposing clamping blocks 5 arranged in a sliding structure. The support blocks support the opening of the fork-shaped part, and the clamping blocks clamp the rear of the fork-shaped part. This front-supporting and rear-clamping mode ensures clamping stability. The mounting base 3 is provided with a first transmission structure 8 for driving the support blocks 4 to reciprocate vertically, and a second transmission structure 9 for driving the clamping blocks 5 to reciprocate vertically. The second transmission structure 9 is connected to the mounting base 3. Both the first transmission structure 8 and the second transmission structure 9 are connected to a power component 6. The power component 6 drives the support blocks 4 and clamping blocks 5 to move through the first transmission structure 8 and the second transmission structure 9 respectively, which has good motion synchronization and saves costs.

[0039] Specifically, the first transmission structure 8 includes a drive arm 81 connected to the power component 6. Inclined surfaces A82 are provided on both sides of the front end of the drive arm 81. The front end of the drive arm 81 gradually widens towards the rear. Inclined surfaces A'83 that fit against the inclined surfaces A82 are provided on the opposite side walls of the two support blocks 4. When the drive arm 81 moves outward, the inclined surfaces A'83 and A82 slide together to make the two support blocks 4 gradually move away from each other and outward. A return spring 84 is also provided to drive the two support blocks 4 to move inward.

[0040] The mounting base 3 on the inner side of the support block 4 has a groove for placing the return spring 84. The groove is blocked by a stop block. The outer end of the return spring 84 abuts against the inner side of the stop block, and the other end is connected to the support block 4. When the support block 4 moves outward, the return spring 84 is compressed. When the drive arm 81 moves inward, the front end of the drive arm 81 gradually narrows due to the influence of the two inclined surfaces A82. As a result, the two support blocks 4 move inward under the push of the return spring 84.

[0041] It should be noted that, in order to ensure the precise clamping of the fork-shaped part by this solution, the shape of the outer wall of the mounting base 3 is adapted to the outer contour of the fork-shaped part B. A mounting groove 85 is provided in the drive arm 81. A pressure claw 10 is connected to the mounting groove 85. The middle part of the pressure claw 10 is connected to the side wall of the mounting groove 85 by a hinge structure, and the lower part of the pressure claw 10 is connected to the mounting base 3 by a hinge structure. A baffle 17 is fixedly provided at the lower part of the mounting base 3. The pressure claw 10 is driven to press against the inner side of the recess of the fork-shaped part, thereby pressing the lower part of the fork-shaped part against the baffle 17. This satisfies the positioning of the three surfaces of the recess and the three surfaces of the tail of the fork-shaped part, providing all-round positioning of the fork-shaped part B. This facilitates cooperation with the welding system and allows for precise placement of the fork-shaped part B.

[0042] It should be noted that a pawl 11 is hinged within the mounting base 3. The pawl 11 has a sliding groove A12 and a sliding groove B13. A shaft A14 is slidably mounted within groove A12 and is connected to the drive arm 81. A shaft B15 is slidably mounted within groove B13 and is connected to a drive rod B16, which is connected to the power component 6. This structural design ensures that the drive arm 81 can move towards the attached... Figure 5 The target moving to the lower left can drive the support block 4 to move outward, and can also drive the pressure claw 10 to rotate around the hinge point with the mounting base 3 through the drive arm 81. Through the above linkage design, the synchronization of the clamping block 5, the support block 4 and the pressure claw 10 is increased, ensuring that the fork-shaped part is subjected to uniform force.

[0043] Furthermore, the pawl 11 has a through hole connecting to the slide groove A12. An adjusting bolt 19 is threaded into the through hole, and a clamping spring 20 is sleeved on the outside of the adjusting bolt 19. The lower end of the clamping spring 20 abuts against the outside of the shaft A14. Figure 4 As shown in Figure 5, the compression spring 20 applies a downward pressure to the left on the shaft A14 to ensure that the drive arm 81 does not rotate downward to the left around the hinge point with the pressure claw 10 when not in operation, thus not affecting the reset of the support block 4.

[0044] Specifically, a clamping spring 21 is connected between the two clamping blocks 5. The inner walls of the two clamping blocks 5 are respectively provided with cylinders 22 by a fixed structure. The inner side of the cylinders 22 is provided with grooves. The two grooves are inclined surfaces B18 with an inclined structure on opposite side walls. The second transmission structure 9 includes a drive rod A91 disposed between the two inclined surfaces B18. Inclined surfaces B'92 are provided on both sides of the drive rod A91 to fit with the inclined surfaces B18. The design of the inclined surfaces B'92 makes the front end of the drive rod A91 gradually narrow backward. As the drive rod A91 moves towards the mounting plate 2, the distance between the two clamping blocks 5 gradually widens. The inclined surfaces B'92 and B18 slide together to make the two clamping blocks 5 move outward and unlock the clamping of the fork-shaped piece.

[0045] It should be noted that the cylinder 22 has a placement hole for placing the clamping spring 21, and the spring is connected to the two sides with a stop post. The stop post applies tension to the clamping block 5. The structural design is more concealed and reduces space occupation.

[0046] It should be noted that the drive rod A91 has a plane 93 that slides with the horizontal surface of the groove, which ensures both the movement of the drive rod A91 and the non-rotation of the clamping block 5.

[0047] Specifically, the mounting plate 2 is connected to the drive rods A91 and B16 in a sliding structure to ensure that the drive rods A91 and B16 move in a straight line. The drive rods A91 and B16 pass through the mounting plate 2 and are connected to a push plate 7. The push plate 7 is connected to the power component 6, and the power component 6 is fixedly connected to the connecting arm 1. The power component 6 is a cylinder.

[0048] The working principle and process of this utility model are as follows:

[0049] First, the robotic arm attaches the fork-shaped component to the outer wall of the mounting base 3, and then activates cylinder 6, as follows. Figure 4 As shown, cylinder 6 pushes push plate 7 to move to the left, and push plate 7 simultaneously pushes drive rod A91 and drive rod B16 to move.

[0050] Drive rod B16 drives shaft B15 to slide in slide groove B13, thereby driving pawl 11 to rotate around the hinge point with mounting base 3. Pawl 11 drives shaft A14 to move to the left through slide groove A12. Shaft A14 then drives drive arm 81 to move to the left. Drive arm 81 is constrained by the hinge point between pressure pawl 10 and mounting base 3, causing the front end of drive arm 81 to move to the lower left. As drive arm 81 moves, it drives pressure pawl 10 to rotate around the hinge point with mounting base 3. Pressure pawl 10 presses on the bottom of the fork of fork-shaped part B, pressing the lower end of fork-shaped part B tightly against baffle 17. The two support blocks 4 gradually widen and are pushed out as drive arm 81 moves, until the support blocks 4 support the two side walls of the fork-shaped part B's insertion.

[0051] like Figure 4 As shown, when the drive rod A91 moves to the left, the two inclined surfaces B18 gradually narrow as the front end of the drive rod A91 narrows. The two clamping blocks 5 are pulled by the clamping spring 21 to clamp the two sides of the tail of the fork-shaped piece B, as shown. Figure 5 and Figure 6 As shown, the clamping of the fork-shaped part B is completed.

[0052] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "left," "right," "front," "rear," "lower left," "upper right," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Although this utility model has been described according to a limited number of embodiments, those skilled in the art should understand from the above description that other embodiments can be conceived within the scope of this utility model described herein.

Claims

1. A fork clamping device, characterized in that include: The connecting arm (1), the mounting plate (2), and the mounting base (3) are connected to the mounting base (3) via the mounting plate (2); Support block (4), the two support blocks (4) are connected to the mounting base (3) in a sliding structure; The first transmission structure (8) is used to drive the support block (4) to reciprocate vertically, and the first transmission structure (8) is connected to the mounting base (3); Clamping blocks (5), the two clamping blocks (5) are respectively connected to the mounting base (3) by a sliding structure; The second transmission structure (9) is used to drive the clamp (5) to reciprocate vertically, and the second transmission structure (9) is connected to the mounting base (3); The power component (6) is connected to the first transmission structure (8) and the second transmission structure (9).

2. A fork clamping device according to claim 1, characterised in that: The first transmission structure (8) includes a drive arm (81) connected to the power component (6), and inclined surfaces A (82) are provided on both sides of the front end of the drive arm (81). The two support blocks (4) are provided with inclined surfaces A' (83) that fit with the inclined surface A (82) on their opposite side walls. The inclined surfaces A' (83) and A (82) slide together to make the two support blocks (4) move outward. It is also equipped with a return spring (84) that drives the two support blocks (4) to move inward.

3. A fork clamping device according to claim 2, wherein: The drive arm (81) has an installation groove (85) inside, and a pressure claw (10) is connected to the installation groove (85). The middle part of the pressure claw (10) is connected to the side wall of the installation groove (85) through a hinge structure, and the lower part of the pressure claw (10) is connected to the mounting base (3) through a hinge structure. The mounting base (3) is provided with a pawl (11) by means of a hinge structure. The pawl (11) has a slide groove A (12) and a slide groove B (13). The slide groove A (12) is provided with a shaft A (14) by means of a sliding structure. The shaft A (14) is connected to the drive arm (81). A shaft B (15) is provided in the sliding groove B (13) in a sliding structure. A drive rod B (16) is connected to the shaft B (15) and the drive rod B (16) is connected to the power component (6). A baffle (17) is fixedly installed at the lower part of the mounting base (3).

4. A fork clamping device according to claim 3, wherein: The pawl (11) has a through hole that connects to the slide groove A (12). The through hole is fitted with an adjusting bolt (19) by thread engagement. A compression spring (20) is sleeved on the outside of the adjusting bolt (19). The lower end of the compression spring (20) abuts against the outside of the shaft A (14).

5. A fork clamping device according to claim 2, wherein: A clamping spring (21) is connected between the two clamping blocks (5). A cylinder (22) is provided on the inner wall of the two clamping blocks (5) by means of a fixed structure. A groove is provided on the inner side of the cylinder (22). The two grooves are inclined surfaces B (18) with an inclined structure on opposite side walls. The second transmission structure (9) includes a drive rod A (91) disposed between two inclined surfaces B (18). Inclined surfaces B' (92) that fit against the inclined surfaces B (18) are provided on both sides of the drive rod A (91). The inclined surfaces B' (92) and B (18) slide together to move the two clamping blocks (5) outward.

6. A fork clamping device according to claim 5, wherein: The drive rod A (91) has a plane (93) that slides with the horizontal surface of the groove.

7. A fork clamping device according to claim 5, wherein: The mounting plate (2) is connected to the drive rod A (91) and drive rod B (16) in a sliding structure. The drive rod A (91) and drive rod B (16) pass through the mounting plate (2) and are connected to a push plate (7). The push plate (7) is connected to the power component (6).

8. A fork-shaped clamping device according to claim 1 or 7, characterized in that: The power component (6) is a cylinder.

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