A pneumatic mechanical gripper

Abstract

The utility model discloses a pneumatic mechanical clamp, which specifically relates to the technical field of mechanical clamps, including a support plate, a first passive bar and a second passive bar, a cylinder is installed at one end of the support plate through a mounting plate, an active bar is installed at the output end of the cylinder, a first rack is symmetrically arranged on both sides of the active bar, the first passive bar is cross-arranged below the active bar, the second passive bar is cross-arranged above the active bar, and a first gear connector is arranged between the first passive bar and the active bar. The utility model provides a first gear connector and a second gear connector, and when the output end of the cylinder retracts, the active bar retracts, the first rack drives the first gear and the second gear to rotate, the first gear drives the first passive bar to extend outward, and at the same time, the second gear drives the second passive bar to extend outward, so that the clamping area can be increased, and rapid release after three-point clamping can be achieved more stably, with a large separation range.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical clamps, in particular to a pneumatic mechanical clamp. Background Art

[0002] A mechanical gripper is a commonly used end effector in the field of industrial automation. It is mainly used in robots, automated assembly lines, material handling systems, etc. to grasp, carry, and place various workpieces. Among them, pneumatic mechanical grippers use compressed air as a power source to achieve the grasping and releasing of objects. Pneumatic mechanical grippers are widely used in many automated production environments due to their simple structure, fast response, relatively low cost, and easy maintenance.

[0003] In the Chinese patent application number 202021869289.8, a new type of pneumatic manipulator clamp is disclosed. The disclosed clamp describes that "when the moving rod moves, the two moving plates can be pulled closer to each other by two linkage rods. After clamping the cylindrical workpiece, the two blocking wheels can be made in close contact with the cylindrical workpiece, and the cylindrical workpiece can be further braked." The linkage rod in the disclosed clamp is hinged to the clamp arm and the connecting plate. When the cylinder drives the connecting plate forward, the hinged linkage rod pulls the ends of the two clamp arms closer together to clamp the workpiece. Although it can clamp the workpiece, the moving length of the hinged linkage rod is limited, which has a certain clamping limit and a small scope of application. Secondly, the cylinder is retracted when releasing the clamping of the clamp arm, but due to the hinged connection of the linkage rod, the linkage rod rotates during the retraction of the cylinder, making it difficult to separate the two clamp arms at a large angle, which is not convenient for unloading and subsequent clamping. Utility Model Content

[0004] The purpose of this utility model is to provide a pneumatic mechanical gripper to solve the above-mentioned deficiencies in the technology.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pneumatic mechanical gripper, comprising:

[0006] A support plate, one end of which is mounted with a cylinder via a mounting plate, an output end of the cylinder is mounted with an active bar, and two sides of the active bar are symmetrically provided with a first rack;

[0007] A first passive bar and a second passive bar, the first passive bar is cross-arranged below the active bar, the second passive bar is cross-arranged above the active bar, and a first gear connecting member is provided between the first passive bar and the active bar, a second gear connecting member is provided between the second passive bar and the active bar, the ends of the first passive bar and the second passive bar are both connected with arc bars, and a clamping area is formed between the end of the active bar and the two arc bars.

[0008] Preferably, the first gear connecting member includes:

[0009] a second rack, the second rack being fixed to a surface of the first passive bar facing the active bar;

[0010] The first gear is rotatably mounted on the support plate and is meshedly connected between the second rack and the first rack.

[0011] Preferably, the second gear connecting member includes:

[0012] a third rack, the third rack being fixed to a surface of the second passive bar facing the active bar;

[0013] The second gear is rotatably mounted on the supporting plate and is meshedly connected between the third rack and the first rack.

[0014] Preferably, fixed blocks are symmetrically fixed at both ends of the upper end surface of the support plate, the upper end surface of the fixed block is provided with a through groove, the side wall of the through groove is provided with a guide groove, and the first passive bar and the second passive bar are connected to both sides near the end with guide bars, and the guide bars are slidably fitted in the guide groove.

[0015] Preferably, the bottom end of the active strip is connected to a limiting plate, the upper end surface of the support plate is provided with a limiting groove, and the limiting plate is slidably fitted in the limiting groove.

[0016] Preferably, the lower end surfaces of the first gear and the second gear are both connected to a support rod, and the bottom end of the support rod is connected to the support plate through a bearing seat.

[0017] Preferably, a first clamping block is fixed to the end of the active strip away from the cylinder, and a second clamping block is fixed to the end of the arc strip.

[0018] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0019] The utility model provides a first gear connecting member and a second gear connecting member. When the cylinder output end retracts, the active bar retracts, the first rack drives the first gear and the second gear to rotate, the first gear drives the first passive bar to extend outward, and the second gear drives the second passive bar to extend outward. This can increase the clamping area, and can more stably realize rapid release after three-point clamping, with a large separation range, and is more convenient to use.

[0020] During the extension or retraction of the first passive bar and the second passive bar, the first passive bar and the second passive bar are always moving in the through groove, and the sliding of the guide bar in the guide groove can limit and guide the first passive bar and the second passive bar to avoid misalignment of the first passive bar and the second passive bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 This is one of the overall structural diagrams of the utility model;

[0023] Figure 2 This is the second schematic diagram of the overall structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the fixing block of the utility model;

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the support plate of the utility model.

[0026] Description of reference numerals:

[0027] 1. Support plate; 2. Cylinder; 3. Active bar; 4. First rack; 5. First passive bar; 6. First gear; 7. Second rack; 8. Second passive bar; 9. Second gear; 10. Third rack; 11. Arc bar; 12. First clamping block; 13. Second clamping block; 14. Fixed block; 15. Limiting plate; 16. Guide bar; 17. Through slot; 18. Support rod; 19. Guide slot; 20. Limiting slot. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Figure 1 and Figure 2The figures are schematic diagrams of the overall structure of the present invention. As shown in the figure, the pneumatic mechanical gripper includes a support plate 1, a first passive bar 5 and a second passive bar 8. A cylinder 2 is installed at one end of the support plate 1 through a mounting plate. An active bar 3 is installed at the output end of the cylinder 2. A first clamping block 12 is fixed to the end of the active bar 3 away from the cylinder 2. A first rack 4 is symmetrically provided on both sides of the active bar 3. The first passive bar 5 is cross-arranged below the active bar 3. The second passive bar 8 is cross-arranged above the active bar 3. A first gear connecting member is provided between the first passive bar 5 and the active bar 3. The first passive bar 5 is connected to the active bar 3 through the first gear connecting member. A gear connector can be used to push the first passive strip 5 backward when the active strip 3 is pushed forward, or to push the first passive strip 5 forward when the active strip 3 is retracted. A second gear connector is provided between the second passive strip 8 and the active strip 3. The second passive strip 8 can be pushed forward and the second passive strip 8 backward when the active strip 3 is pushed forward, or to push the second passive strip 8 forward when the active strip 3 is retracted, through the second gear connector. The ends of the first passive strip 5 and the second passive strip 8 are both connected to an arc strip 11, and a second clamping block 13 is fixed to the end of the arc strip 11. A clamping area is formed between the end of the active strip 3 and the two arc strips 11, and the size of the clamping area is adjustable.

[0030] Among them, see Figure 1 As shown, the first gear connecting member includes:

[0031] The second rack 7 is fixed to the side of the first passive bar 5 facing the active bar 3;

[0032] The first gear 6 is rotatably mounted on the support plate 1 and is meshedly connected between the second rack 7 and the first rack 4 . The first rack 4 is the first rack 4 on the side of the active rack 3 facing the second rack 7 .

[0033] See Figure 1 As shown, the second gear connecting member includes:

[0034] The third rack 10 is fixed to the side of the second passive bar 8 facing the active bar 3;

[0035] The second gear 9 is rotatably mounted on the support plate 1 and is meshedly connected between the third rack 10 and the first rack 4 . The first rack 4 is the first rack 4 on the side of the active rack 3 facing the third rack 10 .

[0036] See Figure 2 As shown, the lower end surfaces of the first gear 6 and the second gear 9 are connected to a support rod 18, and the bottom end of the support rod 18 is connected to the support plate 1 through a bearing seat to achieve the rotational installation of the first gear 6 and the second gear 9.

[0037] Secondly, see Figure 1 and Figure 3As shown, fixed blocks 14 are symmetrically fixed at both ends of the upper end surface of the support plate 1, a through groove 17 is provided on the upper end surface of the fixed block 14, and a guide groove 19 is provided on the side wall of the through groove 17. Guide bars 16 are connected to both sides of the first passive bar 5 and the second passive bar 8 near the end, and the guide bars 16 slide in the guide groove 19.

[0038] Based on the above technical solutions:

[0039] During specific use, when the output end of the cylinder 2 retracts, the active bar 3 retracts, the first rack 4 drives the first gear 6 and the second gear 9 to rotate, the first gear 6 drives the first passive bar 5 to extend, and the second gear 9 drives the second passive bar 8 to extend, which can increase the clamping area. After the part to be clamped is in the clamping area, the output end of the cylinder 2 can be extended. At this time, the active bar 3 extends, the first rack 4 drives the first gear 6 and the second gear 9 to rotate, the first gear 6 drives the first passive bar 5 to retract, and the second gear 9 drives the second passive bar 8 to retract, which can make the first clamping block 12 and the second clamping block 13 close to each other to clamp the part to be clamped. When loosening, the cylinder 2 retracts, which can quickly realize the separation of the first clamping block 12 and the second clamping block 13, and can more stably realize rapid loosening after three-point clamping, and the separation range is large, which is more convenient to use.

[0040] Among them, during the extension or retraction of the first passive bar 5 and the second passive bar 8, the first passive bar 5 and the second passive bar 8 are always moving in the through groove 17, and the sliding of the guide bar 16 in the guide groove 19 can limit and guide the first passive bar 5 and the second passive bar 8 to avoid misalignment of the first passive bar 5 and the second passive bar 8.

[0041] Further, see Figure 1 and Figure 4 As shown, the bottom end of the active bar 3 is connected to the limiting plate 15 , the upper end surface of the supporting plate 1 is provided with a limiting groove 20 , and the limiting plate 15 is slidably fitted in the limiting groove 20 .

[0042] Specifically, the linear sliding of the limiting plate 15 in the limiting groove 20 can limit and guide the extension or retraction of the active bar 3, thereby improving the stability of the movement of the active bar 3.

[0043] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A pneumatic mechanical gripper, characterized in that: include: A support plate (1), wherein a cylinder (2) is mounted on one end of the support plate (1) via a mounting plate, an active bar (3) is mounted on the output end of the cylinder (2), and a first rack (4) is symmetrically provided on both sides of the active bar (3); A first passive strip (5) and a second passive strip (8), wherein the first passive strip (5) is cross-arranged below the active strip (3), and the second passive strip (8) is cross-arranged above the active strip (3), and a first gear connecting member is provided between the first passive strip (5) and the active strip (3), and a second gear connecting member is provided between the second passive strip (8) and the active strip (3), and ends of the first passive strip (5) and the second passive strip (8) are both connected to an arc strip (11), and a clamping area is formed between the end of the active strip (3) and the two arc strips (11).

2. A pneumatic mechanical gripper according to claim 1, characterized in that: The first gear connecting member comprises: A second rack (7), the second rack (7) being fixed on a surface of the first passive bar (5) facing the active bar (3); A first gear (6) is rotatably mounted on the support plate (1), and the first gear (6) is meshedly connected between the second rack (7) and the first rack (4).

3. A pneumatic mechanical gripper according to claim 2, characterized in that: The second gear connecting member comprises: A third rack (10), wherein the third rack (10) is fixed to a surface of the second passive bar (8) facing the active bar (3); A second gear (9), the second gear (9) is rotatably mounted on the support plate (1), and the second gear (9) is meshedly connected between the third rack (10) and the first rack (4).

4. A pneumatic mechanical gripper according to claim 1, characterized in that: Fixed blocks (14) are symmetrically fixed at both ends of the upper end surface of the support plate (1), a through groove (17) is provided on the upper end surface of the fixed block (14), a guide groove (19) is provided on the side wall of the through groove (17), and guide bars (16) are connected to both sides of the first passive strip (5) and the second passive strip (8) near the ends, and the guide bars (16) are slidably matched in the guide grooves (19).

5. The pneumatic mechanical gripper according to claim 1, characterized in that: The bottom end of the active strip (3) is connected to a limiting plate (15), the upper end surface of the support plate (1) is provided with a limiting groove (20), and the limiting plate (15) is slidably matched in the limiting groove (20).

6. A pneumatic mechanical gripper according to claim 3, characterized in that: The lower end surfaces of the first gear (6) and the second gear (9) are both connected to a support rod (18), and the bottom end of the support rod (18) is connected to the support plate (1) via a bearing seat.

7. The pneumatic mechanical gripper according to claim 1, characterized in that: A first clamping block (12) is fixed to one end of the active strip (3) away from the cylinder (2), and a second clamping block (13) is fixed to the end of the arc strip (11).

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