Mechanical gripper for riser production

Abstract

The utility model relates to the technical field of mechanical grippers, in particular to a mechanical gripper for riser production, which comprises a guide disc, clamping jaws and a cam, the guide disc is provided with a plurality of guide grooves along the radial direction, the plurality of guide grooves are radially distributed, one ends of the clamping jaws are slidably connected with the guide grooves, the guide grooves are in one-to-one correspondence with the clamping jaws, and the cam is arranged on the guide disc. The cam is used for driving the clamping jaws to slide, the cam is arranged above the guide disc and rotationally connected with the guide disc, concave parts and convex parts are arranged on the cam in pairs, and the clamping jaws correspond to the concave parts and the convex parts respectively. The mechanical clamping hand for dead head production is easy to operate and low in misoperation rate.

Description

Technical Field

[0001] The utility model relates to a mechanical gripper, in particular to a mechanical gripper for riser production. Background Art

[0002] The riser is a geometric pouring body on the casting. The riser height is relatively large, and a longer clamp is required for clamping during production. The Chinese utility model patent with publication number CN214394258U discloses a pneumatic clamp and a manipulator with the pneumatic clamp. In the patent, a second sliding groove is provided on the turntable, a first sliding groove is provided on the bracket, and a clamping mechanism is provided at the intersection of the first sliding groove and the second sliding groove. When the bracket and the turntable rotate relative to each other, the intersection of the first sliding groove and the second sliding groove changes, thereby facilitating the movement of the clamping mechanism to complete the clamping of the workpiece.

[0003] In the above patent, the clamping force is generated by the relative rotation of the first sliding groove and the second sliding groove. Clamping or loosening the workpiece requires repeated forward and reverse rotation, and operating errors may cause the workpiece to fall off. Utility Model Content

[0004] Technical purpose: In order to overcome the deficiencies in the prior art, the utility model provides a mechanical gripper for riser production.

[0005] Technical solution: To achieve the above purpose, the utility model discloses a mechanical gripper for riser production, comprising:

[0006] A guide plate, wherein the guide plate is provided with a plurality of guide grooves along the radial direction, and the plurality of guide grooves are distributed in a radial shape;

[0007] A clamping jaw, one end of which is slidably connected to the guide groove, and the guide groove corresponds to the clamping jaw one by one;

[0008] The cam is used to drive the clamping jaws to slide. The cam is arranged above the guide plate and is rotatably connected to the guide plate. The cam is provided with a concave portion and a convex portion in pairs, and the clamping jaws correspond to a pair of concave portions and a convex portion respectively.

[0009] Preferably, the clamp comprises a body, a slider and a guide wheel which are connected to each other, the body is connected to the bottom of the slider, the guide wheel is connected to the top of the slider, and the slider is slidably connected in the guide groove.

[0010] Preferably, one end of the guide groove is connected to a top block, a spring is provided between the top block and the sliding block, and one end of the spring is fixedly connected to the top block.

[0011] Preferably, two side walls defining the recess are respectively a first side wall and a second side wall, and the inclination degree of the first side wall is greater than the inclination degree of the second side wall.

[0012] Preferably, an elastic member is sleeved and connected around all the clamping jaws, and under the action of the elastic member, the clamping jaws have a movement tendency to gather toward the center.

[0013] Preferably, it further comprises a fixed disk, which is arranged above the guide disk, and a driver is connected to the fixed disk, and an output end of the driver is connected to the cam.

[0014] The mechanical gripper for riser production disclosed in the utility model has the following technical effects:

[0015] (1) The cam of the device can rotate unidirectionally to achieve the closing or dispersion of the clamping jaws, thereby achieving the grasping or releasing of the workpiece, which is easier to operate and reduces the error rate.

[0016] (2) The inclination of the first side wall in the device is greater than that of the second side wall, so that the clamping jaws move smoothly when clamping the workpiece and move quickly when releasing the workpiece, thereby avoiding damage to the workpiece during clamping while ensuring the clamping efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a bottom view of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the utility model after the fixing plate is removed;

[0020] Figure 4 This is a schematic diagram of the structure of the utility model after the fixing plate and the cam are removed;

[0021] Figure 5 It is a structural schematic diagram of the clamping jaws of the utility model.

[0022] In the figure, 1, guide plate; 2, guide groove; 3, clamping claw; 4, cam; 5, recess; 6, convex part; 7, main body; 8, slider; 9, guide wheel; 10, top block; 11, spring; 12, first side wall; 13, second side wall; 14, elastic member; 15, fixed plate; 16, driver; 17, fastener. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1 To Attachment Figure 5 The principles and features of the present invention are described, and the examples given are only used to explain the present invention, and are not used to limit the scope of the present invention.

[0024] A mechanical gripper for riser production comprises a guide plate 1, a clamping claw 3, a cam 4 and a fixed plate 15.

[0025] The guide plate 1 and the fixed plate 15 are arranged in parallel, and the guide plate 1 is arranged below the fixed plate 15, and the guide plate 1 and the fixed plate 15 are fixed to each other by fasteners 17 (bolts). The cam 4 is arranged above the guide plate 1 and below the fixed plate 15, and the cam 4 is rotatably connected to the guide plate 1. The fixed plate 15 is connected to a driver 16, which is a motor, and the output end of the driver 16 is connected to the cam 4, and the driver 16 is used to drive the cam 4 to rotate.

[0026] The guide plate 1 is provided with a plurality of guide grooves 2 along the radial direction. Figure 2 and attached Figure 3 It can be seen that six guide grooves 2 are provided in this embodiment. The six guide grooves 2 are distributed radially. One end of the clamping jaw 3 is slidably connected to the guide groove 2, and the guide groove 2 corresponds to the clamping jaw 3 one by one. Specifically, the clamping jaw 3 includes a main body 7, a slider 8 and a guide wheel 9 which are connected to each other. The main body 7 is cylindrical. The main body 7 is connected to the bottom of the slider 8 and fixed by bolts; the guide wheel 9 is connected to the top of the slider 8; the slider 8 is slidably connected in the guide groove 2. A top block 10 is connected to one end of the guide groove 2 close to the center of the guide plate 1, and a spring 11 is provided between the top block 10 and the slider 8, and one end of the spring 11 is fixedly connected to the top block 10. Replacing the length of the top block 10 can control the maximum length of the slider 8 sliding inward.

[0027] The cam 4 is used to drive the clamping jaws 3 to slide. The cam 4 is provided with a concave portion 5 and a convex portion 6 in pairs, and each clamping jaw 3 corresponds to a set of concave portions 5 and convex portions 6. The guide wheel 9 abuts against the cam surface of the cam 4. When the cam 4 rotates to make the guide wheel 9 correspond to the concave portion 5 of the cam 4, the clamping jaws 3 gather together to clamp the workpiece; when the cam 4 rotates to make the guide wheel 9 correspond to the convex portion 6 of the cam 4, the clamping jaws 3 move away from each other to release the workpiece. The two side walls of the concave portion 5 are defined as a first side wall 12 and a second side wall 13, respectively, and the inclination of the first side wall 12 is greater than the inclination of the second side wall 13. Under this design, when the guide wheel 9 slides from the convex portion 6 to the concave portion 5 through the second side wall 13, the clamping jaws 3 move closer to each other to clamp the workpiece. Since the second side wall 13 is relatively smooth, the workpiece is clamped more stably to avoid damaging the workpiece. When the guide wheel 9 slides from the concave portion 5 to the first side wall 12 to the convex portion 6, the clamping jaws 3 move away from each other to release the workpiece. Since the first side wall 12 is relatively steep, the workpiece is lowered more quickly, thereby improving the clamping efficiency.

[0028] An elastic member 14 is sleeved and connected around the clamping jaw 3. Under the action of the elastic member 14, the clamping jaw 3 has a tendency to move toward the center. The elastic member 14 is used in conjunction with the cam 4. The elastic member 14 is used to gather the clamping jaw 3 toward the center; the cam 4 is used to open the clamping jaw 3. Under the action of the elastic member 14, the clamping jaw 3 has a relatively mild clamping force.

[0029] In this solution, the driver 16 can be rotated unidirectionally to achieve periodic movement of the clamping jaws 3 toward the center or outward expansion; the clamping jaws 3 are relatively long and can conveniently clamp the workpiece.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mechanical gripper for riser production, characterized in that: include: A guide plate (1), wherein the guide plate (1) is provided with a plurality of guide grooves (2) along a radial direction, and the plurality of guide grooves (2) are distributed in a radial shape; A clamping jaw (3), one end of the clamping jaw (3) being slidably connected to the guide groove (2), and the guide groove (2) and the clamping jaw (3) corresponding one to one; A cam (4) is used to drive the clamping jaw (3) to slide. The cam (4) is arranged above the guide plate (1) and is rotatably connected to the guide plate (1). The cam (4) is provided with a concave portion (5) and a convex portion (6) in pairs. The clamping jaw (3) corresponds to a pair of concave portions (5) and convex portions (6) respectively.

2. The mechanical gripper for riser production according to claim 1, characterized in that: The clamping jaw (3) comprises a main body (7), a slider (8) and a guide wheel (9) which are connected to each other, wherein the main body (7) is connected to the bottom of the slider (8), the guide wheel (9) is connected to the top of the slider (8), and the slider (8) is slidably connected to the guide groove (2).

3. The mechanical gripper for riser production according to claim 2, characterized in that: One end of the guide groove (2) is connected to a top block (10), a spring (11) is provided between the top block (10) and the slider (8), and one end of the spring (11) is fixedly connected to the top block (10).

4. The mechanical gripper for riser production according to claim 1, characterized in that: The two side walls of the recess (5) are defined as a first side wall (12) and a second side wall (13), respectively, and the inclination degree of the first side wall (12) is greater than the inclination degree of the second side wall (13).

5. The mechanical gripper for riser production according to claim 1, characterized in that: An elastic member (14) is sleeved and connected around all the clamping jaws (3); under the action of the elastic member (14), the clamping jaws (3) have a tendency to move toward the center.

6. The mechanical gripper for riser production according to claim 1, characterized in that: It also comprises a fixed disk (15), wherein the fixed disk (15) is arranged above the guide disk (1), and a driver (16) is connected to the fixed disk (15), and an output end of the driver (16) is connected to the cam (4).

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