Centering carrying clamp

Abstract

The utility model discloses a centering carrying clamping hand which comprises a frame, two clamping jaws symmetrically distributed on the left side and the right side in front of the frame and an air cylinder driving the two clamping jaws to be opened and closed. The rear end faces of the two clamping jaws are each connected with a rack, the two racks are vertically arranged in parallel in a spaced mode, and a gear is meshed between the two racks. The gear is rotatably assembled in the center of the frame. According to the utility model, the two racks are meshed on the same gear, so that the two clamping jaws move synchronously, and then centering clamping is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping devices, in particular to a centering transport clamp. Background Art

[0002] When workers carry large-sized items, manual carrying is difficult. Therefore, workers often need the assistance of carrying grippers to carry the items. Specifically, the carrying grippers clamp on both sides of the items, and workers move the carrying grippers to carry the items. In the prior art, the structure of the carrying grippers is mostly driven by a cylinder to open and close the two jaws. However, during the clamping process of the cylinder, the two jaws cannot be guaranteed to move synchronously, that is, after the item is clamped, it cannot be guaranteed that the item is placed in the clamping center of the carrying gripper.

[0003] When the transport gripper is carrying a larger object, the transport gripper is considered as a reference object. Whether the transport gripper moves to the reference position is used to determine whether the object held by the transport gripper is moved to the theoretical placement position. If there is a deviation between the relative position of the transport gripper and the object, that is, the object is not placed at the gripping center of the transport gripper, when the transport gripper moves to the reference position, there will be a certain deviation between the actual placement position of the object and the theoretical placement position, which will affect the subsequent stacking and placement of the objects. Utility Model Content

[0004] The utility model aims to provide a centering carrying clamping hand, which can realize the synchronous movement of two clamping jaws so as to enable the two clamping jaws to perform centering clamping.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A centering handling gripper comprises a frame, two gripping jaws symmetrically distributed on the left and right sides of the front of the frame, and a cylinder for driving the two gripping jaws to open and close;

[0007] The rear end surfaces of the two clamping jaws are respectively connected with a rack, the two racks are arranged in parallel with each other at an interval, and a gear is meshed between the two racks; the gear is rotatably assembled at the center position of the frame.

[0008] By meshing the two racks on the same gear, the two clamping jaws move synchronously, thereby achieving center clamping.

[0009] As a further solution of the utility model, a plurality of support blocks are provided between the rack and the frame, and the support blocks are fixed to the frame by bolts; the support blocks are provided with slide grooves, and the rack slides in the corresponding slide grooves. With the above structure, the support blocks support the sliding of the rack, so that the rack can move horizontally smoothly, thereby fully meshing the rack with the gear.

[0010] As a further solution of the utility model, the material of the support block is POM. The use of the above material improves the wear resistance and self-lubricating property of the support block.

[0011] As a further solution of the utility model, guide rails are symmetrically arranged at the upper and lower positions of the front surface of the frame, and slide feet mounted on the guide rails are respectively arranged at the upper and lower positions of the rear end surface of the clamping jaws. With the above structure, the two clamping jaws can be opened and closed smoothly through the cooperation between the guide rails and the slide feet.

[0012] As a further solution of the utility model, an elastic layer is provided inside the front end of the clamping jaw. The above structure is adopted to increase the friction between the clamping jaw and the side wall of the object.

[0013] As a further solution of the utility model, the material of the elastic layer is eutectic. The above material is used to increase the friction between the elastic layer and the surface of the object.

[0014] As a further solution of the utility model, a plurality of suction cups are embedded on the elastic layer. With the above structure, the side wall of the object is effectively adsorbed to prevent the object from accidentally falling off the centering handling clamp.

[0015] As a further solution of the utility model, a support plate is fixed to the rear surface of the frame, and the gear is rotatably arranged on the front side of the support plate through a bearing. The above structure is adopted to realize the rotation of the gear.

[0016] As a further solution of the utility model, there are two cylinders, which are arranged at intervals in the upper and lower parts; the cylinder is arranged horizontally between the rear ends of the two clamping jaws. The above solution is adopted to effectively drive the two clamping jaws to open and close.

[0017] As a further solution of the utility model, the frame is a rectangular frame formed by four frame bars fixedly connected in sequence. The above solution has a simple structure and is easy to maintain.

[0018] Beneficial effects of the utility model:

[0019] By meshing the two racks on the same gear, the two jaws move synchronously, thereby achieving center clamping;

[0020] The support block slides the rack to enable the rack to move horizontally smoothly, thereby fully meshing the rack with the gear.

[0021] The two clamping jaws can be opened and closed smoothly through the cooperation between the guide rail and the sliding foot. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described below in conjunction with the accompanying drawings:

[0023] Figure 1It is a schematic diagram (I) of the utility model;

[0024] Figure 2 yes Figure 1 The enlarged schematic diagram of point A in the middle;

[0025] Figure 3 It is a schematic diagram (II) of the utility model;

[0026] Figure 4 It is a partial schematic diagram of the utility model (I);

[0027] Figure 5 It is a partial schematic diagram (II) of the utility model;

[0028] Figure 6 It is a partial schematic diagram of the utility model (three);

[0029] Figure 7 It is a partial schematic diagram (four) of the utility model.

[0030] The accompanying drawings are marked as follows:

[0031] 1. Frame; 11. Support block; 12. Support plate; 13. Guide rail; 2. Clamp; 2a. First clamp; 2b. Second clamp; 21. Connecting plate; 22. Elastic layer; 23. Sliding foot; 24. Suction cup; 3. Cylinder; 3a. First cylinder; 3b. Second cylinder; 4. Gear; 5. Rack; 5a. First rack; 5b. First rack. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] A centering gripper, see Figure 1 , Figure 4 and Figure 5 As shown, it includes a frame 1, two clamping jaws 2 symmetrically distributed on the left and right sides of the front of the frame 1, and a cylinder 3 for driving the two clamping jaws 2 to open and close. The rear end surfaces of the two clamping jaws 2 are respectively connected with a rack 5. The two racks 5 are arranged in parallel with each other at an interval, and a gear 4 is meshed between the two racks 5. The gear 4 is rotatably assembled at the center position of the frame 1.

[0034] The cylinder 3 is horizontally arranged between the rear ends of the two clamping jaws 2. When the cylinder 3 is extended and retracted, the distance between the two clamping jaws 2 is adjusted, thereby realizing the opening and closing of the two clamping jaws 2.

[0035] In this embodiment, there are two cylinders 3, which are spaced apart from each other. Figure 3 As shown, the two clamping jaws 2 are respectively a first clamping jaw 2a and a second clamping jaw 2b. The first clamping jaw 2a is arranged on the front left side of the frame 1, and the second clamping jaw 2b is arranged on the front right side of the frame 1.

[0036] The two cylinders 3 are respectively a first cylinder 3a and a second cylinder 3b. The first cylinder 3a is located above the second cylinder 3b. The fixed end of the first cylinder 3a is connected to the inner side of the rear end of the first clamping jaw 2a, and the cylinder rod of the first cylinder 3a is connected to the inner side of the rear end of the second clamping jaw 2b. The fixed end of the second cylinder 3b is connected to the inner side of the rear end of the second clamping jaw 2b, and the cylinder rod of the second cylinder 3b is connected to the inner side of the rear end of the first clamping jaw 2a.

[0037] The two racks 5 are respectively a first rack 5a and a second rack 5b. The first rack 5a is located below the gear 4, and the second rack 5b is located above the gear 4. The rear end surface of the first clamping jaw 2a is connected to the first rack 5a through a corresponding connecting plate 21. The rear end surface of the second clamping jaw 2b is connected to the second rack 5b through a corresponding connecting plate 21.

[0038] When the first cylinder 3a and the second cylinder 3b shrink synchronously, the distance between the first clamping jaw 2a and the second clamping jaw 2b becomes smaller, and at the same time, the first rack 5a slides horizontally to the right and the second rack 5b slides horizontally to the left under the cooperation between the rack 5 and the gear 4. Since the gear 4 is meshed with the first rack 5a and the second rack 5b at the same time, the first rack 5a and the second rack 5b move synchronously in the opposite direction, thereby causing the first clamping jaw 2a and the second clamping jaw 2b to move synchronously in the opposite direction, thereby enabling the centering gripper to achieve centering clamping.

[0039] A support plate 12 is fixed to the rear surface of the frame 1. The gear 4 is rotatably disposed on the front side of the support plate 12 via a bearing.

[0040] In this example, see Figure 6 As shown, the frame 1 is a rectangular frame formed by four frame bars fixedly connected in sequence. The support plate 12 is fixed to the rear surface of the corresponding frame bar by bolts and is located at the center of the frame 1. A fixed shaft is fixed to the front side of the support plate 12. The gear 4 is rotatably assembled on the fixed shaft through a bearing.

[0041] Further, in order to ensure that the rack 5 slides smoothly and the rack 5 is fully meshed with the gear 4, please refer to Figure 4As shown, a plurality of support blocks 11 are provided between the rack 5 and the frame 1. The support blocks 11 are fixed to the frame 1 by bolts. A slide groove is provided on the support block 11. The rack 5 slides in the corresponding slide groove. The slide groove provides sliding support for the horizontal movement of the rack 5, so that the rack 5 slides smoothly and ensures that the rack 5 is fully meshed with the gear 4.

[0042] In this embodiment, the material of the support block 11 is POM, which has good wear resistance and self-lubricating properties.

[0043] Further, in order to make the two clamping jaws 2 open and close smoothly, please refer to Figure 2 and Figure 4 As shown, guide rails 13 are symmetrically arranged at the upper and lower positions of the front surface of the frame 1. Slide feet 23 assembled on the guide rails 13 are respectively arranged at the upper and lower positions of the rear end surface of the clamping jaw 2.

[0044] In this embodiment, the guide rails 13 are fixed to the front surfaces of the corresponding frame bars respectively. The clamping jaws 2 slide on the guide rails 13 via the sliding feet 23 .

[0045] In this embodiment, four slide feet 23 are arranged on the rear end surface of the same clamping jaw 2. Two slide feet 23 are arranged on the guide rail 13 at the upper position, and the other two slide feet 23 are arranged on the guide rail 13 at the lower position.

[0046] Further, in order to increase the friction between the inner side of the clamping jaw 2 and the object to be transported, please refer to Figure 1 As shown, an elastic layer 22 is provided on the inner side of the front end of the clamping jaw 2 .

[0047] In this embodiment, the contact surface of the elastic layer 22 is an arc surface, which is suitable for fitting to the outer wall of the drum.

[0048] In this embodiment, the elastic layer 22 is made of eutectic rubber.

[0049] For further information, see Figure 7 As shown, a plurality of suction cups 24 are embedded on the elastic layer 22 for adsorbing the side walls of the object to be transported. While the centering transport gripper clamps the object through the gripper 2, it also adsorbs the side walls of the object through the suction cups 24. Therefore, with the assistance of the suction cups 24, the centering transport gripper can firmly clamp the object without increasing the clamping force, thereby preventing the object from being deformed due to excessive clamping force.

[0050] In this embodiment, an air pipe is connected to the outer side of the suction cup 24. When the clamping jaws 2 clamp an object, the inner cavity of the suction cup 24 is evacuated through the air pipe, so that the suction cup 24 can effectively absorb the side wall of the object.

[0051] In the utility model, the two clamping jaws 2 are meshed on the same gear 4 through the rack 5, so that the two clamping jaws 2 move synchronously, thereby achieving centered clamping; the frame 1 supports the sliding of the rack 5 through the support block 11, so that the rack 5 can move smoothly horizontally, and thus the rack 5 and the gear 4 are fully meshed; the two clamping jaws 2 cooperate with each other through the guide rail 13 and the sliding foot 23, so that the two clamping jaws 2 can open and close smoothly.

[0052] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A centering handling gripper, comprising a frame (1), two gripping jaws (2) symmetrically distributed on the left and right sides in front of the frame (1), and a cylinder (3) for driving the two gripping jaws (2) to open and close, characterized in that: The rear end surfaces of the two clamping jaws (2) are respectively connected to a rack (5), the two racks (5) are arranged in parallel with each other at an interval, and a gear (4) is meshed between the two racks (5); the gear (4) is rotatably mounted at the center position of the frame (1).

2. The centering and carrying clamp according to claim 1 is characterized in that: A plurality of support blocks (11) are provided between the rack (5) and the frame (1), and the support blocks (11) are fixed to the frame (1) by means of bolts; a slide groove is provided on the support block (11), and the rack (5) slides in the corresponding slide groove.

3. The centering and transporting clamp according to claim 2 is characterized in that: The material of the support block (11) is POM.

4. The centering and carrying clamp according to claim 1 is characterized in that: Guide rails (13) are symmetrically arranged at upper and lower positions on the front surface of the frame (1), and sliding feet (23) mounted on the guide rails (13) are respectively arranged at upper and lower positions on the rear end surface of the clamping jaw (2).

5. The centering and carrying clamp according to claim 1 is characterized in that: An elastic layer (22) is provided on the inner side of the front end of the clamping jaw (2).

6. The centering and carrying clamp according to claim 5 is characterized in that: The material of the elastic layer (22) is urethane foam.

7. The centering and carrying clamp according to claim 5 is characterized in that: A plurality of suction cups (24) are embedded on the elastic layer (22).

8. The centering and carrying clamp according to claim 1 is characterized in that: A support plate (12) is fixed to the rear surface of the frame (1), and the gear (4) is rotatably arranged on the front side of the support plate (12) via a bearing.

9. The centering and carrying clamp according to claim 1, characterized in that: There are two cylinders (3) which are spaced apart from each other in the upper and lower parts; the cylinders (3) are horizontally arranged between the rear ends of the two clamping jaws (2).

10. The centering and carrying clamp according to claim 1, characterized in that: The frame (1) is a rectangular frame formed by four frame strips that are fixedly connected in sequence.

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