Mechanical arm clamp

By adjusting the components and designing the anti-slip pads, the problem of fixed gripper size was solved, enabling the clamp to adapt to gripping books of different sizes, avoiding bending and improving gripping stability.

CN224116186UActive Publication Date: 2026-04-14CHANGSHA XUFEI INTELLIGENT TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGSHA XUFEI INTELLIGENT TECH CO LTD
Filing Date
2025-03-25
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

The fixed size of the grippers in existing robotic arm fixtures makes it easy to bend books when gripping them of different sizes, making them unsuitable for a variety of book sizes.

Method used

The adjustment components include a clamping cylinder, a two-way lead screw, a slide bar, an adjustment motor, and a transmission plate. The motor drives the lead screw to adjust the spacing between the clamping plates, and the anti-slip pads increase friction, allowing the clamp to adapt to books of different sizes.

Benefits of technology

The clamp can accommodate books of various sizes, preventing bending, improving clamping effect and protecting the book. The replaceable anti-slip pad ensures friction and improves clamping stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a mechanical arm clamp which comprises a base, a clamping air cylinder is fixedly connected to the bottom end of the base, an adjusting assembly is arranged at the telescopic end of the clamping air cylinder, and a clamping plate is arranged at the bottom end of the adjusting assembly. The adjusting assembly comprises a fixing frame fixedly connected to the telescopic end of the clamping air cylinder, the inner wall of the fixing frame is rotationally connected with a two-way lead screw, one end of the two-way lead screw extends out of the fixing frame and is fixedly connected with an adjusting motor, and a sliding rod is fixedly connected to the position, below the two-way lead screw, of the inner wall of the fixing frame; compared with the prior art, the clamping device has the following beneficial effects that the two first mounting seats move towards each other or away from each other by adjusting the motor, the two-way lead screw and the sliding rod, and the first transmission plate and the second transmission plate are matched to drive the second mounting seats to slide along the surface of the sliding rod, so that the distance between the clamping plates can be adjusted; therefore, the clamp can be suitable for books of various sizes, and the books are prevented from being bent in the carrying process.
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Description

Technical Field

[0001] This utility model is a robotic arm gripper, belonging to the field of book production. Background Technology

[0002] Books refer to bound volumes of works. During the production process, books need to be handled and stacked. Due to the inefficiency of manual handling and stacking, robotic arm grippers have emerged.

[0003] In the prior art, some clamps are used by a robotic arm to move the clamp to the position of the book. Then, the telescopic ends of the cylinder will retract synchronously to drive the gripper to grab the book. However, because the size of the gripper is fixed, the part of the book not covered by the gripper is prone to bending when gripping the book, making it difficult for the clamp to be used for books of different sizes. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a robotic arm gripper to solve the problem mentioned in the background art that some grippers, due to the fixed size of the grippers, make it easy for the part of the book not covered by the grippers to bend when gripping the book, making the gripper difficult to be used for books of different sizes.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a robotic arm gripper, including a base, a clamping cylinder fixedly connected to the bottom end of the base, an adjustment component provided at the telescopic end of the clamping cylinder, and a clamping plate provided at the bottom end of the adjustment component;

[0006] The adjustment assembly includes a fixed frame fixedly connected to the telescopic end of the clamping cylinder. A bidirectional lead screw is rotatably connected to the inner wall of the fixed frame. An adjustment motor is fixedly connected to one end of the bidirectional lead screw extending out of the fixed frame. A slide rod is fixedly connected to the inner wall of the fixed frame below the bidirectional lead screw. Two first mounting seats are threadedly connected to the surface of the bidirectional lead screw. The first mounting seats are slidably connected to the slide rod. A plurality of second mounting seats are slidably connected to the surface of the slide rod between the two first mounting seats. A first transmission plate is rotatably connected to one side of the first mounting seat, and a second transmission plate is rotatably connected to one side of the second mounting seat. Adjacent first transmission plates, adjacent second transmission plates, and the first and second transmission plates are all rotatably connected.

[0007] Furthermore, the first mounting base, the second mounting base, and the clamping plate are all provided with locking holes, and locking bolts are inserted into the locking holes. Locking nuts are threaded onto the surface of the locking bolts.

[0008] Furthermore, the vertical cross-section of the clamp is L-shaped, and the end of the clamp away from the first mounting base is sharp.

[0009] Furthermore, a slot is provided on one side of the clamping plate, the cross-section of the slot is "T" shaped, and an anti-slip pad is slidably connected inside the slot, the cross-section of the anti-slip pad is I-shaped.

[0010] Furthermore, a pad-removing groove is provided on one side of the clamp above the slot, and the pad-removing groove is square.

[0011] Furthermore, the vertical cross-section of the base is I-shaped, and the top of the base is provided with several connecting holes.

[0012] The beneficial effects of this utility model are as follows: by adjusting the motor, the two-way lead screw and the slide bar, the two first mounting seats can be moved towards each other or away from each other. With the cooperation of the first transmission plate and the second transmission plate, several second mounting seats will be driven to slide along the surface of the slide bar, so that the distance between several clamping plates can be adjusted, thereby making the clamp suitable for books of various sizes and preventing the books from bending during transportation.

[0013] The anti-slip pad increases the friction between the book and the clip, which not only effectively improves the gripping effect of the book, but also protects the book. The old anti-slip pad can be removed from the slot and the new anti-slip pad can be inserted into the slot to replace the anti-slip pad, thus ensuring the anti-slip effect of the anti-slip pad. Attached Figure Description

[0014] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the overall structure of a robotic arm gripper according to the present invention;

[0016] Figure 2 This is a schematic diagram of the adjustment component structure of a robotic arm gripper according to the present invention;

[0017] Figure 3 This is an enlarged structural diagram of point A of a robotic arm gripper according to the present invention;

[0018] Figure 4 This is a schematic diagram of the anti-slip pad installation structure of a robotic arm gripper according to the present invention.

[0019] In the diagram: 1. Base; 2. Clamping cylinder; 3. Adjustment assembly; 31. Fixing frame; 32. Two-way lead screw; 33. Adjustment motor; 34. Slide rod; 35. First mounting seat; 36. Second mounting seat; 37. First transmission plate; 38. Second transmission plate; 4. Clamping plate; 5. Locking hole; 6. Locking bolt; 7. Locking nut; 8. Slot; 9. Anti-slip pad; 10. Pad removal groove; 11. Connecting hole. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] Please see Figures 1 to 2 This utility model provides a technical solution: a robotic arm gripper, including a base 1, a clamping cylinder 2 fixedly connected to the bottom end of the base 1, an adjustment component 3 provided at the telescopic end of the clamping cylinder 2, and a clamping plate 4 provided at the bottom end of the adjustment component 3;

[0022] The adjusting assembly 3 includes a fixed frame 31 fixedly connected to the telescopic end of the clamping cylinder 2. A bidirectional lead screw 32 is rotatably connected to the inner wall of the fixed frame 31. One end of the bidirectional lead screw 32 extends out of the fixed frame 31 and is fixedly connected to an adjusting motor 33. A slide rod 34 is fixedly connected to the inner wall of the fixed frame 31 below the bidirectional lead screw 32. Two first mounting seats 35 are threadedly connected to the surface of the bidirectional lead screw 32. The first mounting seats 35 and the slide rod 34 are slidably connected. Several second mounting seats 36 are slidably connected to the surface of the slide rod 34 between the two first mounting seats 35. A first transmission plate 37 is rotatably connected to one side of the first mounting seat 35. A second transmission plate 38 is rotatably connected to one side of the second mounting seat 36. There are rotatable connections between two adjacent first transmission plates 37, between two adjacent second transmission plates 38, and between the first transmission plate 37 and the second transmission plate 38.

[0023] By adjusting the motor 33, the bidirectional lead screw 32, and the slide bar 34, the two first mounting seats 35 can move towards or away from each other. In conjunction with the first transmission plate 37 and the second transmission plate 38, several second mounting seats 36 will slide along the surface of the slide bar 34, thereby adjusting the spacing between several clamping plates 4. This allows the clamp to be suitable for books of various sizes and prevents the books from bending during handling.

[0024] Please see Figures 1 to 4This utility model provides a technical solution: Locking holes 5 are provided on the surfaces of the first mounting base 35, the second mounting base 36, and the clamping plate 4. Locking bolts 6 pass through the locking holes 5, and locking nuts 7 are threaded onto the surface of the locking bolts 6. The clamping plate 4 is placed at the bottom of the first mounting base 35 or the second mounting base 36, then the locking bolts 6 are inserted into the locking holes 5. Next, the locking nuts 7 are fitted onto the surface of the locking bolts 6 and rotated to install the clamping plate 4 onto the bottom of the first mounting base 35 or the second mounting base 36, thus enabling the clamping plate 4 to be assembled and disassembled.

[0025] The vertical cross-section of the clamping plate 4 is L-shaped, and the end of the clamping plate 4 away from the first mounting base 35 is pointed. The L-shaped vertical cross-section of the clamping plate 4 can provide support for the bottom of the book, and the pointed end of the clamping plate 4 away from the first mounting base 35 facilitates the movement of the clamping plate 4 to the bottom of the book.

[0026] A slot 8 is provided on one side of the clamping plate 4. The cross-section of the slot 8 is "T"-shaped, and an anti-slip pad 9 is slidably connected inside the slot 8. The cross-section of the anti-slip pad 9 is I-shaped. The anti-slip pad 9 increases the friction between the book and the clamping plate 4, thereby not only effectively improving the clamping effect of the book, but also protecting the book. The old anti-slip pad 9 can be removed from the slot 8 and a new anti-slip pad 9 can be inserted into the slot 8 to replace the anti-slip pad 9, thus ensuring the anti-slip effect of the anti-slip pad 9.

[0027] A square-shaped groove 10 is provided on one side of the clamping plate 4 above the slot 8 for removing the anti-slip pad 9. The square groove 10 facilitates the removal of the anti-slip pad 9 from the slot 8.

[0028] The vertical cross-section of the base 1 is I-shaped, and several connection holes 11 are provided at the top of the base 1. The base 1 can be connected to the robotic arm through the connection holes 11 at the top of the base 1. The I-shaped vertical cross-section of the base 1 ensures that there is enough space to insert bolts into the connection holes 11.

[0029] Detailed implementation: Before use, start the adjusting motor 33 to drive the bidirectional lead screw 32 connected to its output end to rotate within the fixed frame 31. Due to the restriction of the slide rod 34 fixed to the inner wall of the fixed frame 31, the two first mounting seats 35 will move towards or away from each other along the surface of the bidirectional lead screw 32. Then, through the first transmission plate 37 and the second transmission plate 38, the second mounting seat 36 will slide along the surface of the slide rod 34, thereby driving the clamping plates 4 installed at the bottom of the first mounting seats 35 and the second mounting seats 36 to move. The spacing between several clamping plates 4 can be adjusted, so that the clamp can be used for books of various sizes, avoiding bending of the books during the handling process. When in use, connect the base 1 to the robot arm, and the robot arm controls the clamp to move. When the clamp moves to the book position, the telescopic ends of the clamping cylinder 2 will retract synchronously, thereby driving the adjusting components 3 fixed to the telescopic ends of the clamping cylinder 2 to move towards each other, so as to grab the book, thereby realizing the handling and stacking of books on the production line.

[0030] The anti-slip pad 9 increases the friction between the book and the clamp 4, which not only effectively improves the gripping effect of the book, but also protects the book. As the usage time increases, the anti-slip pad 9 will wear out. At this time, the old anti-slip pad 9 can be pulled out from the slot 8 opened on one side of the clamp 4, and the new anti-slip pad 9 can be inserted into the slot 8 to replace the anti-slip pad 9, thus ensuring the anti-slip effect of the anti-slip pad 9.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A robotic arm gripper, comprising a base (1), wherein a clamping cylinder (2) is fixedly connected to the bottom end of the base (1), characterized in that: The extension end of the clamping cylinder (2) is provided with an adjustment component (3), and the bottom end of the adjustment component (3) is provided with a clamping plate (4). The adjusting assembly (3) includes a fixed frame (31) fixedly connected to the telescopic end of the clamping cylinder (2). A bidirectional lead screw (32) is rotatably connected to the inner wall of the fixed frame (31). One end of the bidirectional lead screw (32) extends out of the fixed frame (31) and is fixedly connected to an adjusting motor (33). A slide rod (34) is fixedly connected to the inner wall of the fixed frame (31) below the bidirectional lead screw (32). Two first mounting seats (35) are threaded onto the surface of the bidirectional lead screw (32). The first mounting seats (35) are connected to the... The slide rods (34) are slidably connected. The surface of the slide rods (34) is slidably connected to a plurality of second mounting seats (36) between two first mounting seats (35). A first transmission plate (37) is rotatably connected to one side of the first mounting seat (35), and a second transmission plate (38) is rotatably connected to one side of the second mounting seat (36). The two adjacent first transmission plates (37), the two adjacent second transmission plates (38), and the first transmission plate (37) and the second transmission plate (38) are all rotatably connected.

2. The robotic arm gripper according to claim 1, characterized in that: The first mounting base (35), the second mounting base (36) and the clamping plate (4) are all provided with locking holes (5), and locking bolts (6) are inserted in the locking holes (5). Locking nuts (7) are threaded onto the surface of the locking bolts (6).

3. The robotic arm gripper according to claim 1, characterized in that: The vertical cross-section of the clamp (4) is "L" shaped, and the end of the clamp (4) away from the first mounting base (35) is sharp.

4. A robotic arm gripper according to claim 1, characterized in that: The clamp (4) has a slot (8) on one side. The cross-section of the slot (8) is "T" shaped. An anti-slip pad (9) is slidably connected inside the slot (8). The cross-section of the anti-slip pad (9) is I-shaped.

5. A robotic arm gripper according to claim 4, characterized in that: The clamp (4) has a pad-removing groove (10) on one side above the slot (8), and the pad-removing groove (10) is square.

6. A robotic arm gripper according to claim 1, characterized in that: The vertical cross section of the base (1) is I-shaped, and the top of the base (1) is provided with several connecting holes (11).