Multi-station synchronous operation battery box screw locking machine
By designing a multi-station synchronous battery box screw fastening machine, the movement and position adjustment of the battery box are realized by using components such as a slide table and a storage structure, which solves the problem of low efficiency of existing screw fastening machines and improves the continuity and accuracy of battery box screw fastening.
Patent Information
- Application Number
- CN202520560182.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-28
AI Technical Summary
Most existing screw fastening machines operate in a single station with a fixed worktable. After the battery box screws are fastened, the machine needs to be stopped to replace them, which increases the labor intensity of the operators and reduces the efficiency of battery box screw fastening.
The design incorporates a multi-station synchronous operation battery box screw fastening machine, which uses components such as a slide table, a storage structure, and electric screwdriver bits to achieve longitudinal movement and lateral position adjustment of the battery box. Combined with clamping and buffering mechanisms, it improves the efficiency and accuracy of screw fastening the battery box.
It enables continuous operation of battery box screw fastening, reduces machine downtime, improves screw fastening efficiency and accuracy, and reduces the labor intensity of operators.
Smart Images

Figure CN223889393U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screw fastening machine technology, specifically a multi-station synchronous operation battery box screw fastening machine. Background Technology
[0002] A battery box, as a container for batteries, is primarily used to protect the batteries, connect circuits, and provide a power supply channel. It possesses both component and part-component attributes and is a crucial component widely used in electronic products. A screw fastening machine, also known as an automatic screw fastening machine, automatic screw driving machine, or automatic screw tightening machine, is a typical non-standard automated device designed to automatically feed, tighten, and inspect screws using electric and pneumatic components. This simplifies the screw fastening process, reduces the number of manual laborers, and minimizes adverse effects caused by human error.
[0003] Chinese Patent Publication No. CN218533478U, authorized on February 28, 2023, discloses a multi-station automatic screw fastening machine. This machine has four screw fasteners, capable of simultaneously fastening screws at four stations. It is not only highly efficient and reliable in its fastening, but also significantly reduces the labor intensity of operators. A gripper hook is provided, and a rotating shaft is rotatably connected to one side of the frame. A turntable is rotatably connected to the top of the rotating shaft, and a mounting block is movably installed on the top of the turntable. During use, the workpiece to be processed is fixed onto the mounting block. The operation of the screw fastener is controlled by a control button, which also controls the rotation of the turntable to coordinate with the machine's operation. When the finished workpiece reaches the angle of the gripper hook, the gripper hook automatically removes the finished workpiece. This design improves work efficiency and reduces the labor intensity of operators.
[0004] Most existing screw fastening machines operate at a single workstation, and the worktables are mostly fixed. After the battery box screws are fastened, the machine needs to be stopped to remove the battery box and replace it with a new one. This greatly increases the labor intensity of the operators, reduces the efficiency of battery box screw fastening, and cannot meet the usage requirements. Utility Model Content
[0005] The purpose of this utility model is to provide a multi-station synchronous operation battery box screw fastening machine to solve the problems mentioned in the background art, where most existing screw fastening machines operate at a single station, the worktable is mostly fixed, and after the battery box screws are fastened, the operation needs to be paused to remove the battery box and replace it with a new one, which greatly increases the labor intensity of the operators, reduces the efficiency of battery box screw fastening, and cannot meet the needs of use.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-station synchronous operation battery box screw fastening machine, comprising a base, a touch panel at the front end of the base, the touch panel being connected to the base by screws, two slides on the top of the base, the slides being connected to the base by screws, a storage structure on top of each slide, the storage structure being slidably connected to the slide, a beam frame on the top of the base, the beam frame being fixedly connected to the base, a first mounting plate on one side of the beam frame, and a first mounting plate on the inner side of the first mounting plate. The system includes a slide rail, with the first slide rail connected to the beam frame by screws. The first mounting plate is slidably connected to the first slide rail. A second mounting plate is provided on one side of the first mounting plate, and a second slide rail is provided on the inner side of the second mounting plate. The second slide rail is connected to the first mounting plate by screws. The second mounting plate is slidably connected to the second slide rail. A U-shaped frame is provided on one side of the second mounting plate and is fixedly connected to the second mounting plate. An electric screwdriver is provided above the U-shaped frame and is connected to the U-shaped frame by screws. An electric screwdriver bit is provided below the electric screwdriver and is connected to the output end of the electric screwdriver.
[0007] Preferably, a screw feeder is provided between the two slides, and the screw feeder base is connected by screws.
[0008] Preferably, an L-shaped bracket is provided on one side of the electric screwdriver bit, and the electric screwdriver bit is connected to the L-shaped bracket by screws. The L-shaped bracket and the U-shaped bracket are slidably connected through each other. A third slide rail is provided at the front end of the second mounting plate, and the third slide rail is connected to the second mounting plate by screws. The L-shaped bracket is slidably connected to the third slide rail. A compression spring is provided above the L-shaped bracket, and the two ends of the compression spring are fixedly connected to the second mounting plate and the L-shaped bracket, respectively.
[0009] Preferably, a first motor is provided on the back of the base, and the first motor is connected to the base by screws. A first pulley is provided at the front end of the base. There are two first pulleys, and the first pulleys are rotatably connected to the base. The output end of the first motor is connected to one of the first pulleys. A first belt is provided between the two first pulleys, and the first belt is drivingly connected to the first pulley. The first belt is located above the first slide rail, and the first belt is fixedly connected to the first mounting plate.
[0010] Preferably, a second motor is provided on the back of the first mounting plate, and the second motor is connected to the first mounting plate by screws. A second pulley is provided at the front end of the first mounting plate. There are two second pulleys, and the second pulleys are rotatably connected to the first mounting plate. The output end of the second motor is connected to one of the second pulleys. A second belt is provided between the two second pulleys, and the second belt is drivingly connected to the second pulley. The second belt is located on one side of the second slide rail, and the second belt is fixedly connected to the second mounting plate.
[0011] Preferably, the storage structure includes a sliding seat, a storage plate, a stop block, a first clamping block, a second clamping block, a first electric actuator, and a second electric actuator. The sliding seat is sleeved on the outside of the slide table and is slidably connected to the slide table. The storage plate is disposed above the sliding seat and is connected to the sliding seat by screws. Four stops are disposed above the storage plate and are fixedly connected to the storage plate. The four stops are disposed on adjacent sides of the storage plate. The first clamping block and the second clamping block are disposed above the storage plate and are perpendicular to each other. The first electric actuator is disposed on one side of the first clamping block and is connected to the storage plate by screws. The telescopic end of the first electric actuator is fixedly connected to the first clamping block. The second electric actuator is disposed on one side of the second clamping block and is connected to the storage plate by screws. The telescopic end of the second electric actuator is fixedly connected to the second clamping block.
[0012] Preferably, a third motor is installed inside the base and is connected to the base by screws. A third pulley is installed below the slide table. There are two third pulleys and they are rotatably connected to the base. A third belt is installed between the two third pulleys and is drivingly connected to the third pulleys. The third belt is installed on one side of the slide table and is fixedly connected to the slide table.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. This utility model device, through the arrangement of a slide table, a storage structure, a first mounting plate, an electric screwdriver, an electric screwdriver bit, a second mounting plate, a first slide rail, and a second slide rail, allows the storage structure to slide along the slide table, moving the fixed battery box longitudinally. The first mounting plate slides along the first slide rail, and the second mounting plate slides along the second slide rail, adjusting the lateral position and height of the electric screwdriver bit. This facilitates the insertion of the electric screwdriver bit into screws at different positions on the battery box. The electric screwdriver drives the electric screwdriver bit to rotate, and as the electric screwdriver bit rotates, it drives the screws to rotate, thus tightening the screws on the battery box. The slide table is provided in two sets. After one set of battery box screws is tightened, the machine needs to be paused. The screws can be moved to the top of the other set of storage structures to continue screw tightening, improving the efficiency of screw tightening on the battery box.
[0015] 2. This utility model device, through the arrangement of a stop block, a first clamping block, a second clamping block, a first electric push rod, and a second electric push rod, allows two adjacent sides of the battery box to contact the stop block. The first electric push rod drives the first clamping block to move, and the first clamping block contacts the battery box to apply a pushing force. The second electric push rod drives the second clamping block to move, and the second clamping block contacts the battery box to apply a pushing force from another direction. Under the action of the pushing force, the battery box is pushed, which can not only achieve battery box clamping but also battery box positioning, which is beneficial to the accuracy and efficiency of subsequent battery box screw tightening.
[0016] 3. The utility model device uses an L-shaped frame, a third slide rail, and a compression spring. The L-shaped frame is slidably connected to the third slide rail, and the compression spring provides a buffering effect for the installed L-shaped frame. When the electric screwdriver bit comes into contact with the screw on the battery box, it buffers the impact and effectively prevents the electric screwdriver bit or screw from being damaged. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a structural diagram showing the connection between the beam frame, the first mounting plate, and the second mounting plate of this utility model.
[0019] Figure 3 For the present utility model Figure 2 A magnified view of a portion of area A;
[0020] Figure 4 This is a diagram showing the connection between the storage structure and the slide table of this utility model.
[0021] Figure 5 This is a diagram showing the connection relationship between the sliding seat and the sliding table of this utility model.
[0022] In the diagram: 1. Base; 2. Beam frame; 3. Touch panel; 4. Slide table; 5. Storage structure; 6. First mounting plate; 7. Electric screwdriver; 8. Electric screwdriver bit; 9. Second mounting plate; 10. L-shaped frame; 11. First motor; 12. First pulley; 13. First belt; 14. First slide rail; 15. Second motor; 16. Second pulley; 17. Second slide rail; 18. Second belt; 19. Third slide rail; 20. U-shaped frame; 21. Compression spring; 22. Third motor; 23. Third pulley; 24. Third belt; 25. Sliding seat; 26. Stop block; 27. First clamping block; 28. Second clamping block; 29. First electric actuator; 30. Second electric actuator; 31. Storage plate; 32. Screw feeder. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0024] Please see Figure 1-5This utility model provides an embodiment of a multi-station synchronous battery box screw fastening machine, including a base 1. A touch panel 3 is provided at the front end of the base 1 and is connected to the base 1 by screws. Two slides 4 are provided above the base 1 and are connected to the base 1 by screws. A storage structure 5 is provided above each slide 4 and is slidably connected to the slide 4. A beam frame 2 is provided above the base 1 and is fixedly connected to the base 1. A first mounting plate 6 is provided on one side of the beam frame 2, and a first slide rail 14 is provided on the inner side of the first mounting plate 6 and is connected to the beam frame 2 by screws. The first mounting plate 6 is slidably connected to the first slide rail 14. A second mounting plate 9 is provided on one side of the first mounting plate 6. A second slide rail 17 is provided on the inner side of the second mounting plate 9. The second slide rail 17 is connected to the first mounting plate 6 by screws. The second mounting plate 9 is slidably connected to the second slide rail 17. A U-shaped frame 20 is provided on one side of the second mounting plate 9. The U-shaped frame 20 is fixedly connected to the second mounting plate 9. An electric screwdriver 7 is provided above the U-shaped frame 20. The electric screwdriver 7 is connected to the U-shaped frame 20 by screws. An electric screwdriver bit 8 is provided below the electric screwdriver 7. The electric screwdriver bit 8 is connected to the output end of the electric screwdriver 7. A screw feeder 32 is provided between the two slide tables 4. The base 1 of the screw feeder 32 is connected by screws.
[0025] In use: Place the screws into the screw feeder 32 to arrange the screws in an orderly manner for output. Select a suitable electric screwdriver bit 8 and connect it to the output end of the electric screwdriver 7. Place the battery box on the storage structure 5 and move it along the slide table 4. Move the battery box longitudinally, and the first mounting plate 6 moves along the first slide rail 14. Move the electric screwdriver bit 8 laterally, and the second mounting plate 9 slides down along the second slide rail 17. Insert the electric screwdriver bit 8 into the screw on the battery box. Turn on the electric screwdriver 7 to drive the electric screwdriver bit 8 to rotate. As the electric screwdriver bit 8 rotates, it drives the screw to rotate, thus tightening the screw on the battery box.
[0026] Please see Figure 2 and Figure 3 An L-shaped bracket 10 is provided on one side of the electric screwdriver bit 8, and the electric screwdriver bit 8 is connected to the L-shaped bracket 10 by screws. The L-shaped bracket 10 is slidably connected to the U-shaped bracket 20. A third slide rail 19 is provided at the front end of the second mounting plate 9, and the third slide rail 19 is connected to the second mounting plate 9 by screws. The L-shaped bracket 10 is slidably connected to the third slide rail 19. A compression spring 21 is provided above the L-shaped bracket 10, and the two ends of the compression spring 21 are fixedly connected to the second mounting plate 9 and the L-shaped bracket 10 respectively. The L-shaped bracket 10 supports the electric screwdriver bit 8. The L-shaped bracket 10 is slidably connected to the third slide rail 19. The compression spring 21 makes the installed L-shaped bracket 10 have a buffering effect, which buffers when the electric screwdriver bit 8 comes into contact with the screw on the battery box, effectively preventing the electric screwdriver bit 8 or the screw from being damaged by impact.
[0027] Please see Figure 1 and Figure 2 A first motor 11 is mounted on the back of the base 1 and is connected to the base 1 by screws. Two first pulleys 12 are mounted on the front of the base 1 and are rotatably connected to the base 1. The output of the first motor 11 is connected to one of the first pulleys 12. A first belt 13 is positioned between the two first pulleys 12 and is drivingly connected to the first pulleys 12. The first belt 13 is positioned above the first slide rail 14 and is fixedly connected to the first mounting plate 6. A second motor 15 is mounted on the back of the first mounting plate 6 and is connected to the first mounting plate 6 by screws. Two second pulleys 16 are mounted on the front of the first mounting plate 6 and are rotatably connected to the first mounting plate 6. The first motor 11 drives the first pulley 12 to rotate, and the first belt 13 moves with the first pulley 12. The moving first belt 13 applies a pushing and pulling force to the first mounting plate 6, realizing the translation of the first mounting plate 6. The second motor 15 drives the second pulley 16 to rotate, and the second belt 18 moves with the second pulley 16. The moving second belt 18 applies a pushing and pulling force to the second mounting plate 9, realizing the lifting and lowering of the second mounting plate 9, thereby adjusting the lateral position and height of the electric screwdriver bit 8.
[0028] Please see Figure 1 , Figure 4 and Figure 5The storage structure 5 includes a sliding seat 25, a storage plate 31, a stop block 26, a first clamping block 27, a second clamping block 28, a first electric actuator 29, and a second electric actuator 30. The sliding seat 25 is sleeved on the outside of the slide table 4 and is slidably connected to the slide table 4. The storage plate 31 is located above the sliding seat 25 and is connected to the sliding seat 25 by screws. The stop block 26 is located above the storage plate 31. There are four stop blocks 26, and the stop blocks 26 are fixedly connected to the storage plate 31. The four stop blocks 26 are located on adjacent sides of the storage plate 31. The first clamping block 27, the first clamping block 28, the second clamping block 29, the first clamping block 29, the second clamping block 20 ... 7 and the second clamping block 28 are positioned above the shelf 31, and the first clamping block 27 and the second clamping block 28 are perpendicularly positioned. The first electric push rod 29 is positioned on one side of the first clamping block 27, and the first electric push rod 29 is connected to the shelf 31 by screws. The telescopic end of the first electric push rod 29 is fixedly connected to the first clamping block 27. The second electric push rod 30 is positioned on one side of the second clamping block 28, and the second electric push rod 30 is connected to the shelf 31 by screws. The telescopic end of the second electric push rod 30 is fixedly connected to the second clamping block 28. A third motor 22 is installed inside the base 1. 2 is connected to the base 1 by screws. A third pulley 23 is provided below the slide table 4. There are two third pulleys 23, and they are rotatably connected to the base 1. A third belt 24 is provided between the two third pulleys 23, and the third belt 24 is drivingly connected to the third pulleys 23. The third belt 24 is located on one side of the slide seat 25 and is fixedly connected to the slide seat 25. The battery box is placed on the shelf 31, and two adjacent sides of the battery box contact the stop block 26. The first electric push rod 29 drives the first clamping block 27 to move, and the first clamping block 27 contacts the battery box. When a pushing force is applied, the second electric push rod 30 drives the second clamping block 28 to move. The second clamping block 28 contacts the battery box and applies a pushing force from another direction. Under the action of the pushing force, the battery box is pushed, which can not only clamp the battery box, but also position the battery box, which is beneficial to the accuracy and efficiency of subsequent battery box screw tightening. The third motor 22 drives the third pulley 23 to rotate. As the third pulley 23 rotates, it drives the third belt 24 to move. The moving third belt 24 applies a pushing and pulling force to the sliding seat 25, so that the placement structure 5 moves along the slide table 4 and adjusts the longitudinal position of the fixed battery box.
[0029] Working principle: Screws are placed into the screw feeder 32, and the screws are output in an orderly manner. A suitable electric screwdriver bit 8 is connected to the output end of the electric screwdriver 7. The battery box is placed on the shelf 31. The first electric push rod 29 drives the first clamping block 27 to move, and the first clamping block 27 contacts the battery box, applying a pushing force. The second electric push rod 30 drives the second clamping block 28 to move, and the second clamping block 28 contacts the battery box, applying a pushing force from another direction. Under the action of the pushing force, the battery box is pushed, achieving positioning and clamping of the battery box. The third motor 22 is turned on, driving the third pulley 23 to rotate. As the third pulley 23 rotates, it drives the third belt 24 to move. The moving third belt 24 applies a pushing and pulling force to the sliding seat 25, realizing the placement structure 5. Moving along the slide table 4, the first motor 11 is turned on, driving the first pulley 12 to rotate. As the first pulley 12 rotates, it drives the first belt 13 to move. The moving first belt 13 applies a pushing and pulling force to the first mounting plate 6, realizing the translation of the first mounting plate 6. The second motor 15 is turned on, driving the second pulley 16 to rotate. As the second pulley 16 rotates, it drives the second belt 18 to move. The moving second belt 18 applies a pushing and pulling force to the second mounting plate 9, realizing the lifting and lowering of the second mounting plate 9. The electric screwdriver bit 8 is moved to above the screw on the battery box. The electric screwdriver bit 8 falls and inserts into the screw on the battery box. The electric screwdriver 7 is turned on, driving the electric screwdriver bit 8 to rotate. As the electric screwdriver bit 8 rotates, it drives the screw to rotate, realizing the tightening of the screw on the battery box.
[0030] The contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A multi-station synchronous operation battery box screw fastening machine, comprising a machine base (1), characterized in that: The front end of the base (1) is provided with a touch panel (3), and the touch panel (3) is connected to the base (1) by screws. A slide (4) is provided above the base (1). There are two slides (4), and the slides (4) are connected to the base (1) by screws. A storage structure (5) is provided above each of the two slides (4), and the storage structure (5) is slidably connected to the slide (4). A beam frame (2) is provided above the base (1), and the beam frame (2) is fixedly connected to the base (1). A first mounting plate (6) is provided on one side of the beam frame (2). A first slide rail (14) is provided on the inner side of the first mounting plate (6), and the first slide rail (14) is connected to the beam frame (2) by screws. The plate (6) is slidably connected to the first slide rail (14). A second mounting plate (9) is provided on one side of the first mounting plate (6). A second slide rail (17) is provided on the inner side of the second mounting plate (9). The second slide rail (17) is connected to the first mounting plate (6) by screws. The second mounting plate (9) is slidably connected to the second slide rail (17). A U-shaped frame (20) is provided on one side of the second mounting plate (9). The U-shaped frame (20) is fixedly connected to the second mounting plate (9). An electric screwdriver (7) is provided above the U-shaped frame (20). The electric screwdriver (7) is connected to the U-shaped frame (20) by screws. An electric screwdriver bit (8) is provided below the electric screwdriver (7). The electric screwdriver bit (8) is connected to the output end of the electric screwdriver (7).
2. The multi-station synchronous operation battery box screw fastening machine according to claim 1, characterized in that: A screw feeder (32) is provided between the two slides (4), and the screw feeder (32) base (1) is connected by screws.
3. The multi-station synchronous operation battery box screw fastening machine according to claim 1, characterized in that: An L-shaped frame (10) is provided on one side of the electric screwdriver bit (8), and the electric screwdriver bit (8) and the L-shaped frame (10) are connected by screws. The L-shaped frame (10) and the U-shaped frame (20) are slidably connected through each other. A third slide rail (19) is provided at the front end of the second mounting plate (9), and the third slide rail (19) is connected to the second mounting plate (9) by screws. The L-shaped frame (10) and the third slide rail (19) are slidably connected. A compression spring (21) is provided above the L-shaped frame (10), and the two ends of the compression spring (21) are fixedly connected to the second mounting plate (9) and the L-shaped frame (10) respectively.
4. The multi-station synchronous operation battery box screw fastening machine according to claim 1, characterized in that: A first motor (11) is provided on the back of the base (1), and the first motor (11) is connected to the base (1) by screws. A first pulley (12) is provided at the front end of the base (1). There are two first pulleys (12), and the first pulleys (12) are rotatably connected to the base (1). The output end of the first motor (11) is connected to one of the first pulleys (12). A first belt (13) is provided between the two first pulleys (12), and the first belt (13) is connected to the first pulleys (12) in a transmission manner. The first belt (13) is located above the first slide rail (14), and the first belt (13) is fixedly connected to the first mounting plate (6).
5. A multi-station synchronous operation battery box screw fastening machine according to claim 1, characterized in that: A second motor (15) is provided on the back of the first mounting plate (6), and the second motor (15) is connected to the first mounting plate (6) by screws. A second pulley (16) is provided at the front end of the first mounting plate (6). There are two second pulleys (16), and the second pulleys (16) are rotatably connected to the first mounting plate (6). The output end of the second motor (15) is connected to one of the second pulleys (16). A second belt (18) is provided between the two second pulleys (16), and the second belt (18) is connected to the second pulleys (16) for transmission. The second belt (18) is provided on one side of the second slide rail (17), and the second belt (18) is fixedly connected to the second mounting plate (9).
6. A multi-station synchronous operation battery box screw fastening machine according to claim 1, characterized in that: The storage structure (5) includes a sliding seat (25), a storage plate (31), a stop (26), a first clamp (27), a second clamp (28), a first electric actuator (29), and a second electric actuator (30). The sliding seat (25) is sleeved on the outside of the slide table (4) and is slidably connected to the slide table (4). The storage plate (31) is located above the sliding seat (25) and is connected to the sliding seat (25) by screws. The stop (26) is located above the storage plate (31). There are four stop (26) and they are fixedly connected to the storage plate (31). The four stop (26) are arranged on the storage plate. On the two sides adjacent to the plate (31), the first clamping block (27) and the second clamping block (28) are set above the shelf (31), and the first clamping block (27) and the second clamping block (28) are set perpendicularly. The first electric push rod (29) is set on one side of the first clamping block (27), and the first electric push rod (29) is connected to the shelf (31) by screws. The telescopic end of the first electric push rod (29) is fixedly connected to the first clamping block (27). The second electric push rod (30) is set on one side of the second clamping block (28), and the second electric push rod (30) is connected to the shelf (31) by screws. The telescopic end of the second electric push rod (30) is fixedly connected to the second clamping block (28).
7. A multi-station synchronous operation battery box screw fastening machine according to claim 6, characterized in that: The machine base (1) is equipped with a third motor (22), and the third motor (22) is connected to the machine base (1) by screws. A third pulley (23) is provided below the slide (4). There are two third pulleys (23), and the third pulleys (23) are rotatably connected to the machine base (1). A third belt (24) is provided between the two third pulleys (23), and the third belt (24) is connected to the third pulleys (23) for transmission. The third belt (24) is provided on one side of the slide seat (25), and the third belt (24) is fixedly connected to the slide seat (25).
Citation Information
Patent Citations
Multi-station automatic screw locking machine
CN218533478U