A long-stroke two-finger battery gripper based on a positive and negative lead screw structure
By using a long-stroke two-finger battery gripper based on a positive and negative screw structure and a servo motor to drive the gripper, the safety hazards of high-pressure gas drive and the high cost and difficulty of adjusting clamping force in existing technologies are solved, thus achieving safe and precise battery gripping.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HIGGS PRECISION MASCH (SUZHOU) CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-07-03
Smart Images

Figure CN224446005U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of square battery gripping and moving technology, specifically a long-stroke two-finger battery gripper based on a positive and negative toothed screw structure. Background Technology
[0002] Square battery grippers are widely used in new energy vehicle production, battery recycling, and cargo handling. For example, in the assembly and welding of automotive parts, square battery grippers can accurately grip and place parts, enabling automated production and improving assembly accuracy and quality. Existing gripping solutions include the SUNK MAGNOS square magnetic chuck and the SUNK cylinder gripper.
[0003] Existing grippers have the following drawbacks:
[0004] (1) Pneumatic grippers use high-pressure gas to drive the grippers, thereby achieving the purpose of gripping and releasing square batteries. However, this method requires the use of high-pressure gas and a cylinder, and cannot achieve long-distance movement. It also poses safety hazards.
[0005] (2) Magnetic chucks use current pulses to activate permanent magnets and use the magnetism of permanent magnets to complete clamping. Magnetic chucks are expensive and the magnetic field and clamping force are difficult to adjust, making it difficult to achieve very precise control. Utility Model Content
[0006] The purpose of this invention is to provide a long-stroke two-finger battery gripper based on a positive and negative screw structure, in order to solve the problems mentioned in the background art. The pneumatic gripper uses high-pressure gas to drive the gripper, thereby achieving the purpose of gripping and releasing square batteries. However, this method requires high-pressure gas and a cylinder, and cannot achieve long-distance movement. It also poses safety hazards. The magnetic chuck uses current pulses to activate a permanent magnet and uses the magnetism of the permanent magnet to complete the clamping. The magnetic suction solution is expensive, and the magnetic field and clamping force are difficult to adjust, making it difficult to achieve very precise control.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a long-stroke two-finger battery gripper based on a positive and negative lead screw structure, comprising a housing, an end plate fixedly connected to one end of the housing, a motor fixedly mounted on one side of the end plate at one end of the top of the housing, an outer cover fixedly connected to one end of the end plate, a small synchronous pulley being driven through the motor output end through the end plate to the outer cover, a large synchronous pulley being meshed with the small synchronous pulley, a lead screw being rotatably arranged inside the housing, one end of the lead screw passing through the end of the housing and being driven through the large synchronous pulley, a bearing being rotatably connected to the other end of the lead screw, and sliders being threadedly connected to the bottom of both ends of the lead screw surface, the bottoms of the two sliders being fixedly arranged to the bottom inside the housing, and the motor being used to drive the large synchronous pulley and the small synchronous pulley to rotate.
[0008] Preferably, the threads at both ends of the lead screw have opposite rotation directions, and multiple nuts are fixedly provided between the two sliders and the lead screw to fix the lead screw.
[0009] Preferably, a plurality of first screws arranged in a rectangular pattern are fixedly disposed between the housing and the motor, and a plurality of third screws arranged in a rectangular pattern are fixedly disposed at one end of the motor. The motor is fixedly connected to the housing by the plurality of first screws and the plurality of third screws, and the first screws and third screws are used to fix the motor.
[0010] Preferably, the small synchronous pulley and the large synchronous pulley are located inside the outer cover, with the large synchronous pulley located below the small synchronous pulley. The small synchronous pulley and the large synchronous pulley are used to drive the lead screw.
[0011] Preferably, a side cover is fixedly connected to one side of the bearing, and a plurality of evenly distributed second screws are fixedly provided on one side of the side cover. The side cover is fixedly connected to the outer shell through the plurality of second screws. The side cover is used to fix the bearing, and the bearing is used to fix the lead screw.
[0012] Preferably, a cover plate is fixedly connected to the top of the outer casing, and the cover plate is used to seal the outer casing.
[0013] Preferably, the top of the cover plate is fixedly provided with a plurality of evenly distributed fourth screws and connecting ports, the plurality of fourth screws and connecting ports being arranged with each other, and the cover plate being fixedly connected to the outer shell by the plurality of fourth screws, the fourth screws and connecting ports being used to fix the outer shell and the cover plate.
[0014] Compared with the prior art, the beneficial effects of this utility model are: the long-stroke two-finger battery gripper uses a servo motor-driven gripper that no longer requires high-pressure gas, and only needs to be connected to electricity to complete the gripper's work, which solves the problem of limited movement of pneumatic grippers. At the same time, since it does not require high-pressure gas drive, there is no need for a high-pressure gas storage device, which improves safety; and the use of electric control and lead screw transmission can control the gripper's clamping force, which solves the problem that magnetic suction cups cannot achieve precise control. Attached Figure Description
[0015] Figure 1 The three-dimensional structure of this utility model Figure 1 ;
[0016] Figure 2 The three-dimensional structure of this utility model Figure 2 ;
[0017] Figure 3 The three-dimensional structure of this utility model Figure 3 ;
[0018] Figure 4 This is a partial three-dimensional representation of the present invention. Figure 1 ;
[0019] Figure 5 This is a partial three-dimensional representation of the present invention. Figure 2 ;
[0020] Figure 6 This is a partial three-dimensional representation of the present invention. Figure 3 .
[0021] In the diagram: 1. Outer shell; 2. Slider; 3. Lead screw; 4. Nut; 5. Cover plate; 6. Bearing; 7. End plate; 8. Small synchronous pulley; 9. Large synchronous pulley; 10. Outer cover; 11. Side cover; 12. Motor; 13. First screw; 14. Second screw; 15. Third screw; 16. Fourth screw; 17. Connection port. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1-6This utility model provides a long-stroke two-finger battery gripper based on a positive and negative lead screw structure, including a shell 1. One end of the shell 1 is fixedly connected to an end plate 7. A motor 12 located on one side of the end plate 7 is fixedly installed at one end of the top of the shell 1. An outer cover 10 is fixedly connected to one end of the end plate 7. The output end of the motor 12 extends through the end plate 7 to the outer cover 10 and is connected to a small synchronous pulley 8. The small synchronous pulley 8 is meshed with a large synchronous pulley 9. A lead screw 3 is rotatably installed inside the shell 1. One end of the lead screw 3 passes through one end of the shell 1 and is connected to the large synchronous pulley 9. The other end of the lead screw 3 is rotatably connected to a bearing 6. The bottom of both ends of the lead screw 3 is threadedly connected to sliders 2. The bottom of both sliders 2 is fixedly installed to the bottom inside the shell 1.
[0024] In use, a motor 12 is installed at one end of the top of the outer casing 1, located on one side of the end plate 7. The electric gripper is driven by the motor 12, which is a servo motor and uses synchronous belt pulley transmission.
[0025] The threads at both ends of the lead screw 3 rotate in opposite directions. Multiple nuts 4 are fixed between the two sliders 2 and the lead screw 3. Multiple first screws 13 arranged in a rectangular pattern are fixed between the housing 1 and the motor 12. Multiple third screws 15 arranged in a rectangular pattern are fixed at one end of the motor 12. The motor 12 is fixedly connected to the housing 1 through multiple first screws 13 and multiple third screws 15. The small synchronous pulley 8 and the large synchronous pulley 9 are located inside the outer cover 10, and the large synchronous pulley 9 is located below the small synchronous pulley 8.
[0026] In use, the small synchronous pulley 8 and the large synchronous pulley 9 are located inside the outer cover 10, and the pulleys are driven to rotate by the motor 12.
[0027] A side cover 11 is fixedly connected to one side of the bearing 6. A plurality of evenly distributed second screws 14 are fixedly provided on one side of the side cover 11. A cover plate 5 is fixedly connected to the top of the housing 1. A plurality of evenly distributed fourth screws 16 and connection ports 17 are fixedly provided on the top of the cover plate 5. The plurality of fourth screws 16 and connection ports 17 are arranged in relation to each other.
[0028] In use, the top of the outer casing 1 is connected to a cover plate 5, which is used to fix the outer casing 1 in place.
[0029] In practical use, the electric gripper is driven by a servo motor 12 and a synchronous belt pulley. The motor 12 is connected to the housing by a thread, and one side of the motor 12 is connected to the pulley and fixed to the pulley by a keyway. The motor 12 drives the pulley to rotate, and the driving force is increased by a 1:2 reduction ratio, which reduces the speed and makes the gripper move smoothly to pick up the battery. It adopts a positive and negative lead screw, which has bidirectional transmission characteristics and self-locking characteristics. The rotation of the motor 12 in the same direction can realize the opposite movement of the double nuts 4. During the rotation of the lead screw 3, the gripper is driven to reciprocate, realizing the gripping and putting down of the item.
[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A long-stroke two-finger battery gripper based on a positive and negative lead screw structure, comprising a housing (1), characterized in that: One end of the outer shell (1) is fixedly connected to an end plate (7). A motor (12) located on one side of the end plate (7) is fixedly installed at one end of the top of the outer shell (1). An outer cover (10) is fixedly connected to one end of the end plate (7). The output end of the motor (12) extends through the end plate (7) to the outer cover (10) and is connected to a small synchronous pulley (8). The small synchronous pulley (8) is meshed with a large synchronous pulley (9). A lead screw (3) is rotatably installed inside the outer shell (1). One end of the lead screw (3) passes through one end of the outer shell (1) and is connected to the large synchronous pulley (9). The other end of the lead screw (3) is rotatably connected to a bearing (6). The bottom of both ends of the surface of the lead screw (3) is threadedly connected to a slider (2). The bottom of both sliders (2) is fixedly installed to the bottom inside the outer shell (1).
2. The long-stroke two-finger battery gripper based on the positive and negative toothed screw structure according to claim 1, characterized in that: The threads at both ends of the lead screw (3) rotate in opposite directions, and multiple nuts (4) are fixedly provided between the two sliders (2) and the lead screw (3).
3. The long-stroke two-finger battery gripper based on the positive and negative toothed screw structure according to claim 1, characterized in that: Multiple first screws (13) arranged in a rectangular pattern are fixed between the outer casing (1) and the motor (12). Multiple third screws (15) arranged in a rectangular pattern are fixed at one end of the motor (12). The motor (12) is fixedly connected to the outer casing (1) through multiple first screws (13) and multiple third screws (15).
4. The long-stroke two-finger battery gripper based on the positive and negative toothed screw structure according to claim 1, characterized in that: The small synchronous pulley (8) and the large synchronous pulley (9) are located inside the outer cover (10), and the large synchronous pulley (9) is located below the small synchronous pulley (8).
5. The long-stroke two-finger battery gripper based on the structure of the positive and negative toothed screw according to claim 1, characterized in that: A side cover (11) is fixedly connected to one side of the bearing (6), and a plurality of evenly distributed second screws (14) are fixedly provided on one side of the side cover (11). The side cover (11) is fixedly connected to the outer shell (1) by the plurality of second screws (14).
6. The long-stroke two-finger battery gripper based on the structure of the positive and negative toothed screw according to claim 1, characterized in that: A cover plate (5) is fixedly connected to the top of the outer casing (1).
7. The long-stroke two-finger battery gripper based on the structure of the positive and negative toothed screw according to claim 6, characterized in that: The top of the cover plate (5) is fixedly provided with a plurality of evenly distributed fourth screws (16) and connection ports (17), and the plurality of fourth screws (16) and connection ports (17) are arranged in relation to each other. The cover plate (5) is fixedly connected to the outer shell (1) by the plurality of fourth screws (16).