A clamping device

Abstract

The utility model relates to clamping technology field especially is a kind of clamping device, including base, rotary driver, rotary seat, top plate, elastic chuck, lifting driver, jackscrew, limit board and elastic piece, rotary seat is installed in the rotary end of rotary driver, lifting driver is located in rotary seat, top plate is installed in the top surface of rotary seat, elastic chuck is installed in the top surface of top plate, elastic chuck is equipped with guide hole, the top surface of elastic chuck is equipped with multiple elastic claws around the edge of guide hole, the bottom surface of top plate is recessed with lifting hole that is communicated with guide hole, limit board is installed in the bottom end of jackscrew, limit board is elastically connected with top plate via elastic piece, jackscrew is slidably penetrated into guide hole, the top end of jackscrew is equipped with inverted taper surface, inverted taper surface and the inner wall of multiple elastic claws slidingly abut. The structure of the application is simple, the cost is low, multiple elastic claws clamp the inner wall of annular material to clamp annular material, and the clamping efficiency is high, and the angle of annular material after clamping can be adjusted.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, and in particular to a clamping device. Background Technology

[0002] Before processing materials, they need to be clamped. In existing patents, Chinese patent application number 202321284242.9 discloses a single-acting cylinder ER spring chuck structure, including an ER chuck, a chuck fixing seat, a piston, and a cylinder seat arranged sequentially from the inside out. The chuck fixing seat and the cylinder seat are fixedly connected to a rotating shaft. A chuck nut that moves synchronously is fixedly connected to the front end of the piston. An air chamber is formed between the rear end of the piston, the cylinder seat, and the rear end of the chuck fixing seat for driving the piston forward when air is supplied. The piston is connected to a spring for resetting the piston backward when air is cut off. An air chamber floating component is provided outside the cylinder seat. The air chamber floating component can fit tightly against the cylinder seat to connect the air passage of the air chamber, and can move away from the cylinder seat to allow for the rotational movement of the cylinder seat. This patent has a complex structure. It clamps the outer wall of the material using the ER chuck, but it cannot clamp the inner wall of annular materials, thus failing to achieve the clamping of annular materials. Therefore, the defects are very obvious, and a solution is urgently needed. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a clamping device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A clamping device includes a base, a rotary driver, a rotating seat, a top plate, an elastic chuck, a lifting driver, a top rod, a limiting plate, and an elastic element. The rotary driver is mounted on the base, the rotating seat is rotatably positioned above the base, and the rotating seat is mounted on the rotating end of the rotary driver. The lifting driver is located inside the rotating seat and mounted on the bottom surface of the top plate, the top plate is mounted on the top surface of the rotating seat, the elastic chuck is mounted on the top surface of the top plate, the elastic chuck has a guide hole, and multiple elastic claws are arranged around the edge of the guide hole on the top surface of the elastic chuck. The bottom surface of the top plate has a lifting hole that communicates with the guide hole. The limiting plate is mounted on the bottom end of the top rod and is located inside the lifting hole. The limiting plate is used to abut against the lifting end of the lifting driver. The limiting plate is elastically connected to the top plate via the elastic element, and the elastic element applies a downward elastic force to the limiting plate. The top rod slides through the guide hole, and an inverted conical surface is arranged on the periphery of the top end of the top rod. The inverted conical surface slides against the inner wall of the multiple elastic claws.

[0006] Furthermore, a flared inclined surface is provided on the inner side of the top of the elastic claw, and the slope of the flared inclined surface is equal to the slope of the inverted conical surface.

[0007] Furthermore, the clamping device also includes a locking plate, which is used to lock the elastic clamp onto the top plate.

[0008] Furthermore, the lock plate is detachably connected to the top plate via a locking fastener.

[0009] Furthermore, the top surface of the top plate is recessed with an insert hole, and the bottom wall of the insert hole is provided with a through hole that communicates with the lifting hole. The elastic clamp is inserted into the insert hole, and the locking plate limits the elastic clamp in the insert hole. The top rod passes through the through hole, and the guide hole communicates with the lifting hole through the through hole. The two ends of the elastic element are respectively connected to the top surface of the limiting plate and the top wall of the lifting hole or the bottom surface of the elastic clamp.

[0010] Furthermore, an expansion hole is provided in the middle of the locking plate, through which multiple elastic claws move.

[0011] Furthermore, the inner wall of the expansion hole is recessed with an annular hole, the locking plate has an air groove communicating with the annular hole, the top plate has an air passage, one end of the air passage is communicating with the air groove, and the other end of the air passage is equipped with an air pipe connector.

[0012] Furthermore, the lifting actuator is a cylinder, and the piston rod of the cylinder extends into the lifting hole.

[0013] Furthermore, a raised ring is provided on the top surface of the locking plate, and the raised ring is arranged around the edge of the expansion hole.

[0014] Furthermore, a lower storage cavity is provided in the middle of the base, and the rotation drive is located in the lower storage cavity. An upper storage cavity is provided in the middle of the rotating seat, and the lifting drive is located in the upper storage cavity.

[0015] The beneficial effects of this utility model are as follows: In practical applications, the lifting end of the lifting driver rises and abuts against the limiting plate and the push rod, causing them to move upwards. The limiting plate compresses the elastic element, allowing the elastic element to store elastic potential energy. As the push rod moves upwards, the inverted conical surface on the push rod gradually moves out of the multiple elastic claws, causing the multiple elastic claws to gradually contract and converge. At this point, the annular material can be fitted onto the multiple elastic claws. Then, the lifting end of the lifting driver descends. As the lifting end of the lifting driver descends, the elastic element gradually recovers its elasticity. Under the action of the elastic element's rebound force, the limiting plate and the push rod move downwards and reset, causing the inverted conical surface on the push rod to move into the multiple elastic claws. The inverted conical surface abuts against the multiple elastic claws. The inner wall of the elastic claws allows multiple elastic claws to open and clamp the inner wall of the annular material, thus clamping the annular material. During the processing of the clamped annular material by external equipment (such as a laser engraving machine), the rotary driver drives the rotating seat, along with the elastic chuck and the annular material, to rotate, allowing the external equipment to process the annular material at different angles. After processing, the lifting end of the lifting driver rises and moves upward against the limiting plate along with the top rod. As the inverted conical surface gradually moves outside the multiple elastic claws, the multiple elastic claws gradually contract and close together, releasing the clamping of the annular material, which can then be removed. This invention has a simple structure, low cost, and can clamp the inner wall of the annular material using multiple elastic claws, achieving high clamping efficiency. It can also drive the clamped annular material to adjust its angle to meet the processing requirements of external equipment at different angles. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a cross-sectional view of the concealed base and rotating drive of this utility model.

[0018] Figure 3 This is a three-dimensional structural diagram of the lock plate of this utility model.

[0019] Figure 4 This is a three-dimensional structural schematic diagram of the lock plate of this utility model from another perspective.

[0020] Figure 5 This is a three-dimensional structural diagram of the top plate of this utility model.

[0021] Figure 6 This is a three-dimensional structural schematic diagram of the top plate of this utility model from another perspective.

[0022] Figure 7 This is a three-dimensional structural diagram of the elastic clamp of this utility model.

[0023] Figure 8This is a three-dimensional structural diagram of the top rod of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Base; 2. Rotary driver; 3. Rotary seat; 4. Top plate; 5. Elastic chuck; 6. Lifting driver; 7. Top rod; 8. Limiting plate; 10. Elastic element; 11. Guide hole; 12. Elastic claw; 13. Lifting hole; 14. Inverted conical surface; 15. Flared bevel; 16. Locking plate; 17. Insertion hole; 18. Through hole; 19. Expansion hole; 20. Annular hole; 21. Air groove; 22. Air passage; 23. Air pipe connector; 24. Protruding ring; 25. Lower receiving cavity; 26. Upper receiving cavity; 27. Annular material. Detailed Implementation

[0026] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0027] like Figures 1 to 8 As shown, this utility model provides a clamping device suitable for laser engraving machines, which includes a base 1, a rotary driver 2, a rotating seat 3, a top plate 4, an elastic chuck 5, a lifting driver 6, a top rod 7, a limiting plate 8, and an elastic element 10. The rotary driver 2 is mounted on the base 1, the rotating seat 3 is rotatably disposed above the base 1, and the rotating seat 3 is mounted on the rotating end of the rotary driver 2. The lifting driver 6 is located inside the rotating seat 3 and mounted on the bottom surface of the top plate 4, the top plate 4 is mounted on the top surface of the rotating seat 3, and the elastic chuck 5 is mounted on the top surface of the top plate 4. The elastic chuck 5 has a guide opening. The top surface of the elastic chuck 5 is provided with multiple elastic claws 12 around the edge of the guide hole 11. The bottom surface of the top plate 4 is recessed with a lifting hole 13 that communicates with the guide hole 11. The limiting plate 8 is installed at the bottom end of the top rod 7 and is located in the lifting hole 13. The limiting plate 8 is used to abut against the lifting end of the lifting driver 6. The limiting plate 8 is elastically connected to the top plate 4 via an elastic member 10. The elastic member 10 applies a downward elastic force to the limiting plate 8. The top rod 7 slides through the guide hole 11. The top end of the top rod 7 is provided with an inverted conical surface 14. The inverted conical surface 14 slides against the inner wall of the multiple elastic claws 12.

[0028] In practical applications, the lifting end of the lifting drive 6 rises and abuts against the limiting plate 8, which in turn moves the push rod 7 upward. The limiting plate 8 compresses the elastic element 10, causing the elastic element 10 to store elastic potential energy. As the push rod 7 moves upward, the inverted conical surface 14 on the push rod 7 gradually moves out of the multiple elastic claws 12, causing the multiple elastic claws 12 to gradually contract and move closer together. At this time, the annular material 27 can be fitted onto the multiple elastic claws 12. Then, the lifting end of the lifting drive 6 descends. As the lifting end of the lifting drive 6 descends, the elastic element 10 gradually recovers its elasticity. Under the action of the rebound force of the elastic element 10, the limiting plate 8 and the push rod 7 move downward and reset, causing the inverted conical surface 14 on the push rod 7 to move into the multiple elastic claws 12. The inverted conical surface 14 abuts against the multiple elastic claws 12. The inner wall of the ring material 27 is clamped by multiple elastic claws 12, which open and clamp the inner wall of the ring material 27. During the processing of the clamped ring material 27 by external equipment (e.g., a laser engraving machine), the rotary driver 2 drives the rotating seat 3, along with the elastic chuck 5 and the ring material 27, to rotate, allowing the external equipment to process the ring material 27 at different angles. After processing, the lifting end of the lifting driver 6 rises and moves upward against the limiting plate 8 along with the top rod 7. As the inverted conical surface 14 gradually moves outside the multiple elastic claws 12, the multiple elastic claws 12 gradually contract and close together, releasing the clamping of the ring material 27. At this point, the processed ring material 27 can be removed. This invention has a simple structure, low cost, and can clamp the inner wall of the ring material 27 using multiple elastic claws 12, resulting in high clamping efficiency. It can also drive the clamped ring material 27 to adjust its angle to meet the processing requirements of external equipment at different angles.

[0029] Specifically, the elastic element 10 can be a spring, which is sleeved on the outside of the push rod 7. The push rod 7 guides and positions the spring, thereby improving the working stability and positional accuracy of the elastic element 10.

[0030] In this embodiment, a flared inclined surface 15 is provided on the inner side of the top end of the elastic claw 12, and the slope of the flared inclined surface 15 is equal to the slope of the inverted conical surface 14. In practical applications, when the inverted conical surface 14 of the push rod 7 is located in the inverted conical hole formed by the flared inclined surfaces 15 of the multiple elastic claws 12, the multiple elastic claws 12 elastically contract and move closer together. This structural design allows the multiple elastic claws 12 to move closer together even if the inverted conical surface 14 of the push rod 7 does not extend beyond the top of the multiple elastic claws 12, avoiding the push rod 7 being too exposed, which is beneficial for operators or external robotic arms to quickly and accurately place the annular material 27 onto the multiple elastic claws 12.

[0031] In this embodiment, the clamping device further includes a locking plate 16, which is used to lock the elastic clamp 5 onto the top plate 4. By locking the elastic clamp 5 onto the top plate 4 with the locking plate 16, the assembly of the elastic clamp 5 and the top plate 4 is secure.

[0032] In this embodiment, the locking plate 16 is detachably connected to the top plate 4 via a locking fastener; specifically, the locking fastener can be a locking bolt. This structural design allows for easy disassembly and assembly, and ensures a secure fit.

[0033] In this embodiment, the top surface of the top plate 4 is recessed with an insert hole 17, and the bottom wall of the insert hole 17 is provided with a through hole 18 communicating with the lifting hole 13. The elastic clamp 5 is inserted into the insert hole 17, and the locking plate 16 limits the elastic clamp 5 within the insert hole 17. The top rod 7 passes through the through hole 18, and the guide hole 11 communicates with the lifting hole 13 through the through hole 18. The two ends of the elastic element 10 are respectively connected to the top surface of the limiting plate 8 and the top wall of the lifting hole 13 or the bottom surface of the elastic clamp 5. This structural design makes the positional accuracy of the elastic clamp 5 assembled on the top plate 4 high and the stability better.

[0034] In this embodiment, an expansion hole 19 is provided in the middle of the locking plate 16, and multiple elastic claws 12 move through the expansion hole 19. Multiple elastic elements 10 can retract or expand within the expansion hole 19. When the annular material 27 is sleeved on the multiple elastic claws 12, the top surface of the locking plate 16 can support the annular material 27, which helps to improve the stability of the external equipment in processing the clamped annular material 27.

[0035] In this embodiment, an annular hole 20 is recessed in the inner wall of the expansion hole 19, an air groove 21 communicating with the annular hole 20 is provided on the locking plate 16, and an air passage 22 is provided on the top plate 4. One end of the air passage 22 is connected to the air groove 21, and the other end of the air passage 22 is equipped with an air pipe connector 23. In practical applications, the air pipe connector 23 is connected to an air blower via an air pipe. The air blower blows out positive pressure gas, which flows sequentially along the air passage 22 and into the annular hole 20. The positive pressure gas in the annular hole 20 is blown out through the expansion hole 19. This positive pressure gas blows away debris and other impurities, thus cleaning up debris and other impurities.

[0036] In this embodiment, the lifting actuator 6 is a cylinder, and the piston rod of the cylinder extends into the lifting hole 13. When the piston rod of the cylinder extends, it will push upward against the limiting plate 8 and move upward along with the push rod 7.

[0037] In this embodiment, a protruding ring 24 is provided on the top surface of the locking plate 16, and the protruding ring 24 is arranged around the edge of the expansion hole 19. In practical applications, the protruding ring 24 provides support for the annular material 27, which is beneficial for external equipment to stably process the annular material 27.

[0038] In this embodiment, a lower storage cavity 25 is provided in the middle of the base 1, and the rotary actuator 2 is located in the lower storage cavity 25. An upper storage cavity 26 is provided in the middle of the rotating seat 3, and the lifting actuator 6 is located in the upper storage cavity 26. This structural design not only makes the structure of the base 1 and the rotary actuator 2 compact, thus protecting the rotary actuator 2, but also makes the structure of the rotating seat 3 and the lifting actuator 6 compact, thus protecting the lifting actuator 6.

[0039] Specifically, the lifting drive 6 can be a motor.

[0040] All technical features in this embodiment can be freely combined according to actual needs.

[0041] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A clamping device, characterized in that: The device includes a base (1), a rotary driver (2), a rotating seat (3), a top plate (4), an elastic chuck (5), a lifting driver (6), a top rod (7), a limiting plate (8), and an elastic element (10). The rotary driver (2) is mounted on the base (1). The rotating seat (3) is rotatably positioned above the base (1) and is mounted on the rotating end of the rotary driver (2). The lifting driver (6) is located inside the rotating seat (3) and mounted on the bottom surface of the top plate (4). The top plate (4) is mounted on the top surface of the rotating seat (3). The elastic chuck (5) is mounted on the top surface of the top plate (4) and has a guide hole (11). The top surface of the top plate (4) is provided with multiple elastic claws (12) around the edge of the guide hole (11). The bottom surface of the top plate (4) is recessed with a lifting hole (13) communicating with the guide hole (11). The limiting plate (8) is installed at the bottom end of the top rod (7) and located in the lifting hole (13). The limiting plate (8) is used to abut against the lifting end of the lifting drive (6). The limiting plate (8) is elastically connected to the top plate (4) via an elastic element (10). The elastic element (10) applies a downward elastic force to the limiting plate (8). The top rod (7) slides through the guide hole (11). The top end of the top rod (7) is provided with an inverted conical surface (14). The inverted conical surface (14) slides against the inner wall of the multiple elastic claws (12).

2. The clamping device according to claim 1, characterized in that: The inner side of the top of the elastic claw (12) is provided with a flared inclined surface (15), and the slope of the flared inclined surface (15) is equal to the slope of the inverted conical surface (14).

3. The clamping device according to claim 1, characterized in that: The clamping device also includes a locking plate (16) for locking the elastic clamp (5) onto the top plate (4).

4. The clamping device according to claim 3, characterized in that: The locking plate (16) is detachably connected to the top plate (4) via a locking fastener.

5. A clamping device according to claim 3, characterized in that: The top surface of the top plate (4) is recessed with an insert hole (17). The bottom wall of the insert hole (17) is provided with a through hole (18) that communicates with the lifting hole (13). The elastic chuck (5) is inserted into the insert hole (17). The locking plate (16) limits the elastic chuck (5) in the insert hole (17). The top rod (7) passes through the through hole (18). The guide hole (11) communicates with the lifting hole (13) through the through hole (18). The two ends of the elastic element (10) are respectively connected to the top surface of the limiting plate (8) and the top wall of the lifting hole (13) or the bottom surface of the elastic chuck (5).

6. The clamping device according to claim 3, characterized in that: An expansion hole (19) is provided in the middle of the locking plate (16), and multiple elastic claws (12) move through the expansion hole (19).

7. A clamping device according to claim 6, characterized in that: An annular hole (20) is recessed in the inner wall of the expansion hole (19). An air groove (21) communicating with the annular hole (20) is provided on the locking plate (16). An air passage (22) is provided on the top plate (4). One end of the air passage (22) is connected to the air groove (21), and the other end of the air passage (22) is equipped with an air pipe connector (23).

8. The clamping device according to claim 1, characterized in that: The lifting drive (6) is a cylinder, and the piston rod of the cylinder extends into the lifting hole (13).

9. A clamping device according to claim 6, characterized in that: The top surface of the locking plate (16) is provided with a protruding ring (24), which surrounds the edge of the expansion hole (19).

10. A clamping device according to claim 1, characterized in that: The base (1) has a lower storage cavity (25) in the middle, and the rotation driver (2) is located in the lower storage cavity (25). The rotating seat (3) has an upper storage cavity (26) in the middle, and the lifting driver (6) is located in the upper storage cavity (26).

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