Automatic clamping device for fastener

Abstract

The invention discloses an automatic clamping device for fasteners, and belongs to the technical field of fasteners, the automatic clamping device comprises a workbench, the top of the workbench is fixedly connected with a first supporting column, the bottom of the workbench is fixedly connected with a supporting seat, the top of the first supporting column is fixedly connected with a top plate, and the bottom of the top plate is fixedly connected with a first electric push rod; a positioning groove is formed in the bottom of the first electric push rod, a telescopic rod is fixedly connected into the positioning groove, an adjusting groove is formed in the outer surface of the first electric push rod, and a rotating shaft is movably connected to one side of the inner wall of the adjusting groove. Automatic clamping is accurate and efficient, automatic clamping of fasteners is achieved through linkage of a first electric push rod, a telescopic rod, a contact ring and a clamping frame, positioning, clamping and station switching can be completed without manual intervention in cooperation with a clamping base transferring structure driven by a sliding block and a second electric push rod, the working efficiency is greatly improved, manual operation errors are reduced, and the labor intensity of workers is relieved. And the clamping requirements of fasteners of different specifications are met.

Description

Technical Field

[0001] This invention relates to the field of fastener technology, and more particularly to an automatic fastener clamping device. Background Technology

[0002] In industrial production and machinery assembly, fasteners, as core components connecting various parts, directly affect the overall quality and service life of products due to their installation accuracy and clamping stability. With the rapid development of automated production technology, traditional manual fastener clamping methods are no longer sufficient to meet the demands of efficient and precise production, leading to the emergence of various automatic clamping devices. These devices, through the coordinated operation of mechanical structures and power components, replace manual labor in the positioning, clamping, and transfer of fasteners, becoming key equipment for improving production efficiency and reducing labor costs. They are widely used in various industries such as automobile manufacturing, electronic equipment assembly, and construction machinery assembly.

[0003] However, existing automatic fastener clamping devices still have many shortcomings. The clamping structure of some devices has poor adaptability and is difficult to accommodate fasteners of different specifications and shapes. Rigid clamping is prone to damage to the surface of fasteners, while flexible clamping often has insufficient positioning accuracy. The internal transmission structure and limit structure of the device have poor coordination and are prone to jamming and displacement, affecting the stability of clamping and transfer. At the same time, some device components are complex to assemble and lack convenient maintenance, making it difficult to meet the high-efficiency operation requirements of large-scale production. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the clamping structure of some devices has poor adaptability. The present invention provides an automatic clamping device for fasteners, which can solve the problem of poor adaptability of the clamping structure of some devices.

[0005] To solve the above problems, the following technical solutions are provided: Design an automatic fastener clamping device, including a worktable, a support column fixedly connected to the top of the worktable, a support base fixedly connected to the bottom of the worktable, a top plate fixedly connected to the top of the support column, an electric push rod fixedly connected to the bottom of the top plate, a positioning groove provided at the bottom of the electric push rod, a telescopic rod fixedly connected inside the positioning groove, an adjustment groove provided on the outer surface of the electric push rod, a rotating shaft movably connected to one side of the inner wall of the adjustment groove, a clamping frame fixedly connected to the outer surface of the rotating shaft, a movable seat movably connected to the bottom of the clamping frame, a clamping plate fixedly connected to the bottom of the movable seat, and a contact ring fixedly connected to the outer surface of the telescopic rod, the contact ring contacting the clamping frame.

[0006] Furthermore, a second support column is fixedly connected to the top of the workbench, and a slide rail is fixedly connected to the top of the second support column. A sliding block is movably connected inside the slide rail.

[0007] The above technical solution achieves automatic and precise clamping of fasteners through the linkage of electric push rod, telescopic rod, contact ring and clamping frame. Combined with the movable structure of slide rail and sliding block, it can flexibly adapt to the positioning and clamping requirements of fasteners of different specifications, effectively improve the automation level and operation efficiency of clamping operation, and reduce human operation error.

[0008] Furthermore, an electric push rod two is fixedly connected to one side of the sliding block, and a clamping seat is fixedly connected to the other side of the electric push rod two. A fastener one is fixedly connected inside the clamping seat.

[0009] The above technical solution uses a sliding block to drive the electric push rod 2 and the clamping seat to move, which can flexibly adjust the position of the fastener 1. Combined with the fixing effect of the clamping seat, it can achieve stable bearing and precise transfer of the fastener 1, and improve the adaptability of the device to different work positions and the ease of operation.

[0010] Furthermore, the top of the workbench is provided with a mounting groove, and a directional ring is fixedly connected to the top of the workbench.

[0011] The above technical solution allows for convenient and rapid assembly and disassembly of related components through the mounting slot, while the directional ring can regulate and limit the fasteners, preventing them from shifting during clamping or transfer, and further improving the stability and reliability of the device operation.

[0012] Furthermore, a spring is movably installed inside the mounting groove, and a contact cylinder is fixedly connected to the top of the spring.

[0013] The above technical solution uses the elastic support of the spring to drive the contact cylinder to move up and down flexibly, thereby starting the subsequent parts.

[0014] Furthermore, a rack is fixedly connected to the inner wall of the contact cylinder, a connecting seat is fixedly connected to the bottom of the mounting groove, and a bevel gear is movably connected to one side of the connecting seat, the bevel gear being adapted to the rack.

[0015] The above technical solution uses the meshing of the rack and pinion gear on the inner wall of the contact cylinder to convert the lifting motion of the contact cylinder into the rotational motion of the pinion gear, and can ensure the accuracy of the contact cylinder's positioning by leveraging the stability of the gear transmission.

[0016] Furthermore, a support column three is fixedly connected to the bottom of the mounting groove, and a limit plate is fixedly connected to the top of the support column three.

[0017] The above technical solution forms a stable support through three pairs of limiting plates on the support column. The limiting plates can precisely limit the lifting stroke of the contact cylinder, avoid excessive spring extension and contraction causing the contact cylinder to shift position, ensure the stability of the meshing transmission between the rack and the bevel gear, and improve the overall reliability of the device.

[0018] Furthermore, a second fastener is fixedly connected to the inner wall of the limiting plate, and the second fastener extends downward.

[0019] The above technical solution uses fasteners that extend downward through the inner wall of the limiting plate to precisely guide the lifting path of the contact cylinder. At the same time, it forms a cooperative limiting with the transmission structure inside the contact cylinder to prevent the contact cylinder from swaying during movement, and further ensures the accuracy and stability of the meshing transmission between the rack and the bevel gear.

[0020] Furthermore, a toothed ring is fixedly connected to the outer surface of the second fastener, and the toothed ring is adapted to the bevel gear.

[0021] The above technical solution, through the meshing of the gear ring and the bevel gear, can further transmit the rotational motion of the bevel gear driven by the lifting of the contact cylinder to the second fastener. By using the meshing constraint of the gear transmission, the contact cylinder and the second fastener can achieve synchronous linkage, which not only ensures the accuracy of the lifting and limiting of the contact cylinder, but also enhances the clamping and limiting effect of the fastener through the synchronous action of the second fastener, thereby improving the coordination and stability of the device's transmission and clamping.

[0022] Furthermore, a bearing is fixedly connected to the bottom of the gear ring, the outer ring of the bearing is connected to the gear ring, and a support column four is fixedly connected to the bottom of the inner ring of the bearing, the bottom of the support column four being connected to the bottom of the mounting groove.

[0023] The above technical solution achieves a flexible rotatable connection between the gear ring and the support column four through the bearing. It can not only provide stable vertical support for the gear ring with the support column four, but also ensure smooth rotation of the gear ring when it meshes with the bevel gear, avoiding jamming. At the same time, it reduces friction loss during transmission, improves the stability of gear meshing transmission and the service life of the device.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This automatic fastener clamping device features precise and efficient automated clamping. Through the linkage of electric push rod one with telescopic rod, contact ring, and clamping frame, it achieves automatic clamping of fasteners. Combined with the sliding block and clamping seat transfer structure driven by electric push rod two, positioning, clamping, and workstation switching can be completed without manual intervention, greatly improving work efficiency, reducing human operation errors, and adapting to the clamping needs of fasteners of different specifications. 2. This automatic fastener clamping device features stable transmission and limiting. It converts lifting motion into rotational motion through the meshing transmission of contact cylinder rack, bevel gear, and gear ring. The bearing ensures smooth transmission. Furthermore, the limiting plate and the guide limit and stroke limitation of the second fastener prevent component swaying or excessive movement, ensuring the accuracy of clamping and transmission, reducing jamming and friction loss, and extending the service life of the device. 3. This automatic fastener clamping device is highly adaptable and easy to assemble and disassemble. The spring-driven contact cylinder can achieve flexible contact, adapting to fasteners of different heights and irregular shapes. The directional ring and multiple sets of limiting structures enhance the regularity effect and prevent displacement during operation. The mounting groove design facilitates the quick assembly and disassembly of related components, improves the convenience of device maintenance, and meets the flexible adaptation needs of different workstations. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a perspective view of the overall structure of the present invention; Figure 2 This is a schematic diagram of the main structure of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure below the top plate of the present invention; Figure 4 This is an enlarged structural schematic diagram of point A of the present invention; Figure 5 This is a three-dimensional structural diagram of the two parts of the fastener of the present invention; Figure 6 This is a cross-sectional three-dimensional structural diagram of the present invention. Figure 1 ; Figure 7 This is a cross-sectional three-dimensional structural diagram of the present invention. Figure 2 ; Figure 8 This is a cross-sectional three-dimensional structural diagram of the present invention. Figure 3 .

[0026] In the diagram: 1. Workbench; 2. Support base; 3. Support column one; 4. Top plate; 5. Electric push rod one; 6. Positioning slot; 7. Telescopic rod; 8. Adjustment slot; 9. Rotating shaft; 10. Clamping frame; 11. Movable seat; 12. Clamping plate; 13. Contact ring; 14. Fastener one; 15. Support column two; 16. Slide rail; 17. Sliding block; 18. Electric push rod two; 19. Clamping seat; 20. Directional ring; 21. Mounting slot; 22. Spring; 23. Rack; 24. Connecting seat; 25. Bevel gear; 26. Gear ring; 27. Fastener two; 28. Limiting plate; 29. ​​Support column three; 30. Contact cylinder; 31. Bearing; 32. Support column four. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figure 1 - Figure 8 As shown, this embodiment provides an automatic fastener clamping device, including a worktable 1. A support column 3 is fixedly connected to the top of the worktable 1, and a support base 2 is fixedly connected to the bottom of the worktable 1. A top plate 4 is fixedly connected to the top of the support column 3, and an electric push rod 5 is fixedly connected to the bottom of the top plate 4. A positioning groove 6 is provided at the bottom of the electric push rod 5, and a telescopic rod 7 is fixedly connected inside the positioning groove 6. An adjustment groove 8 is provided on the outer surface of the electric push rod 5, and a rotating shaft 9 is movably connected to one side of the inner wall of the adjustment groove 8. A clamping frame 10 is fixedly connected to the outer surface of the rotating shaft 9, and a movable seat 11 is movably connected to the bottom of the clamping frame 10. A clamping plate 12 is fixedly connected to the bottom of the movable seat 11. A contact ring 13 is fixedly connected to the outer surface of the telescopic rod 7, and the contact ring 13 contacts the clamping frame 10. When the electric push rod 5 is started, it pushes downward, and the telescopic rod 7 in the positioning groove 6 at its bottom moves downward synchronously. The contact ring 13 on the outer surface of the telescopic rod 7 and the adjusting groove 8 are connected by the rotating shaft 9. The connected clamping frames 10 come into contact and generate a squeezing force. Under this force, the clamping frames 10 rotate around the rotating shaft 9, which in turn drives the movable seat 11 at the bottom and the clamping plate 12 fixed at the bottom of the movable seat 11 to move inward synchronously. Finally, the clamping operation of the fastener is achieved by the opposite movement of the clamping plates 12. Conversely, when the electric push rod 5 retracts, the telescopic rod 7 drives the contact ring 13 to move upward. After the clamping frame 10 loses the squeezing force, it can reset and release the clamping of the fastener.

[0029] Preferably, a second support column 15 is fixedly connected to the top of the workbench 1, and a slide rail 16 is fixedly connected to the top of the second support column 15. A sliding block 17 is movably connected inside the slide rail 16. An electric push rod 18 is fixedly connected to one side of the sliding block 17, and a clamping seat 19 is fixedly connected to the other side of the electric push rod 18. A fastener 14 is fixedly connected inside the clamping seat 19. The second support column 15 provides stable support for the top slide rail 16. According to the requirements of the work station, the sliding block 17 inside the slide rail 16 can slide horizontally along the slide rail 16, thereby driving the electric push rod 18, which is fixedly connected to one side of the sliding block 17, to move synchronously, realizing the position adjustment of the clamping seat 19 and the internally fixed fastener 14. When the sliding block 17 moves to the target position, the electric push rod 18 can further fine-tune the lateral distance of the clamping seat 19 through telescopic movement to ensure that the fastener 14 is accurately aligned with the clamping or transfer station. At the same time, the clamping seat 19 and the fastener 14 are aligned. It serves to stabilize and support the load, preventing it from shifting or falling off during movement.

[0030] Preferably, the top of the worktable 1 is provided with a mounting groove 21, and a guide ring 20 is fixedly connected to the top of the worktable 1. A spring 22 is movably installed inside the mounting groove 21, and a contact cylinder 30 is fixedly connected to the top of the spring 22. A rack 23 is fixedly connected to the inner wall of the contact cylinder 30. A connecting seat 24 is fixedly connected to the bottom of the mounting groove 21, and a bevel gear 25 is movably connected to one side of the connecting seat 24. The bevel gear 25 is adapted to the rack 23. A support column 29 is fixedly connected to the bottom of the mounting groove 21. A limiting plate 28 is fixedly connected to the top of support column 3 29. A fastener 27 is fixedly connected to the inner wall of the limiting plate 28. Fastener 27 extends downwards, and a toothed ring 26 is fixedly connected to the outer surface of fastener 27. The toothed ring 26 is adapted to a bevel gear 25. A bearing 31 is fixedly connected to the bottom of the toothed ring 26. The outer ring of the bearing 31 is connected to the toothed ring 26. A support column 4 32 is fixedly connected to the bottom of the inner ring of the bearing 31. The bottom of support column 4 32 is connected to the bottom of the mounting groove 21. Worktable 1 The top guide ring 20 provides initial alignment and positioning for the inserted fasteners, preventing them from shifting. The mounting slot 21 provides installation space for internal components such as the spring 22 and the contact cylinder 30. When the fastener is placed on top of the contact cylinder 30, the spring 22 undergoes elastic deformation under pressure, causing the contact cylinder 30 to move downwards along the extension direction of the second fastener 27. The limiting plate 28, supported by the support column 29, precisely limits the downward stroke of the contact cylinder 30, preventing excessive compression of the spring 22. As the contact cylinder 30 moves downwards, the rack 23 fixed on its inner wall meshes with the bevel gear 25 movably connected to one side of the connecting seat 24, converting the lifting motion of the contact cylinder 30 into the rotational motion of the bevel gear 25. Simultaneously, the bevel gear 25 meshes with the toothed ring 26 fixed on the outer surface of the second fastener 27, thereby causing the second fastener 27 to rotate synchronously, enhancing the clamping and positioning effect on the fastener. The bottom of the gear ring 26 is connected to the support column 32 via the bearing 31. The support column 32 provides stable vertical support for the gear ring 26, while the bearing 31 ensures the smoothness of the gear ring 26 as it rotates with the bevel gear 25, avoids transmission jamming, and reduces friction loss.

[0031] The automatic fastener clamping device proposed in this embodiment provides stable support for the top slide rail 16 via a second support column 15. A sliding block 17 inside the slide rail 16 slides horizontally along the slide rail 16, causing a fixed electric push rod 18 to move synchronously, thereby adjusting the lateral position of the clamping seat 19 and the fastener 14 fixed inside. When the sliding block 17 moves to the preset position, the electric push rod 18 finely adjusts the longitudinal distance of the clamping seat 19 through its telescopic movement, accurately positioning the fastener 14 in the clamping area. The clamping seat 19 provides stable support for the fastener 14. After the position adjustment is completed, the electric push rod 5 at the bottom of the top plate 4 is activated, and the telescopic rod 7 in its bottom positioning groove 6 moves downward synchronously, first contacting the fastener 14 and forming a preliminary positioning, establishing the connection between the telescopic rod 7 and the fastener 14. Subsequently, the target fastener is placed on top of the workbench 1, and the guide ring 20 initially aligns and limits its position to prevent misalignment. The bottom of the target fastener gently contacts the top of the contact cylinder 30 (not yet generating sufficient pressure to drive the transmission). Next, the telescopic rod 7 continues to move downward, and the contact ring 13 on its outer surface contacts and presses against the clamping frame 10 connected to the adjustment groove 8 via the rotating shaft 9, causing the clamping frame 10 to rotate around the rotating shaft 9. This causes the movable seat 11 and the clamping plate 12 at the bottom to retract inward, prioritizing the precise clamping of the target fastener. After the clamping action is in place, the electric push rod 5 continues to output downward thrust, causing the clamping frame 10, movable seat 11, clamping plate 12, and telescopic rod 7, which have clamped the target fastener, to press down as a whole. The target fastener is then pressed down and applies stable pressure to the top of the contact cylinder 30. At this time, the spring 22 in the mounting groove 21 undergoes elastic deformation under pressure, causing the contact cylinder 30 to move downward along the extension direction of the fastener 27 on the inner wall of the limiting plate 28. The limiting plate 28 supported by the support column 29 precisely limits the downward stroke of the contact cylinder 30, preventing the spring 22 from being over-compressed. During the downward movement of the contact cylinder 30, the rack 23 on its inner wall meshes with the bevel gear 25 on one side of the connecting seat 24, converting the lifting motion into the rotational motion of the bevel gear 25. The bevel gear 25 then meshes with the toothed ring 26 on the outer surface of the fastener 27, causing the fastener 27 to rotate synchronously, realizing the linkage connection between the telescopic rod 7 (through the fastener 14 and the target fastener) and the fastener 27, further strengthening the limiting and fixing of the target fastener, and ensuring the stability of the docking at the workstation after pressing down. The bottom of the gear ring 26 is connected to the support column 32 via the bearing 31. The support column 32 provides vertical support, and the bearing 31 ensures that the gear ring 26 rotates smoothly and avoids transmission jamming.After the operation is completed, the electric push rod 5 retracts, causing the overall structure to move upward. The target fastener releases the pressure on the contact cylinder 30, and the spring 22 restores its elastic deformation, causing the contact cylinder 30 and related transmission components to return to their initial positions. At the same time, the telescopic rod 7 moves upward, causing the contact ring 13 to disengage from the clamping frame 10. The clamping frame 10 resets and releases the clamp, completing one operation cycle.

[0032] In the description of this invention, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, unless otherwise specified and limited, it should be noted that the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two elements; they can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0033] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. 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. An automatic fastener clamping device, comprising a worktable (1), characterized in that: The top of the workbench (1) is fixedly connected to a support column (3), the bottom of the workbench (1) is fixedly connected to a support seat (2), the top of the support column (3) is fixedly connected to a top plate (4), the bottom of the top plate (4) is fixedly connected to an electric push rod (5), the bottom of the electric push rod (5) is provided with a positioning groove (6), the inside of the positioning groove (6) is fixedly connected to a telescopic rod (7), the outer surface of the electric push rod (5) is provided with an adjustment groove (8), one side of the inner wall of the adjustment groove (8) is movably connected to a rotating shaft (9), the outer surface of the rotating shaft (9) is fixedly connected to a clamping frame (10), the bottom of the clamping frame (10) is movably connected to a movable seat (11), the bottom of the movable seat (11) is fixedly connected to a clamping plate (12), the outer surface of the telescopic rod (7) is fixedly connected to a contact ring (13), and the contact ring (13) is in contact with the clamping frame (10).

2. The automatic fastener clamping device according to claim 1, characterized in that: The top of the workbench (1) is fixedly connected to a support column two (15), the top of the support column two (15) is fixedly connected to a slide rail (16), and a sliding block (17) is movably connected inside the slide rail (16).

3. The automatic fastener clamping device according to claim 2, characterized in that: One side of the sliding block (17) is fixedly connected to an electric push rod two (18), and the other side of the electric push rod two (18) is fixedly connected to a clamping seat (19). The clamping seat (19) is fixedly connected to a fastener one (14).

4. The automatic fastener clamping device according to claim 1, characterized in that: The top of the workbench (1) is provided with a mounting groove (21), and a directional ring (20) is fixedly connected to the top of the workbench (1).

5. The automatic fastener clamping device according to claim 4, characterized in that: A spring (22) is movably installed inside the mounting groove (21), and a contact cylinder (30) is fixedly connected to the top of the spring (22).

6. The automatic fastener clamping device according to claim 5, characterized in that: A rack (23) is fixedly connected to the inner wall of the contact cylinder (30), and a connecting seat (24) is fixedly connected to the bottom of the mounting groove (21). A bevel gear (25) is movably connected to one side of the connecting seat (24), and the bevel gear (25) is adapted to the rack (23).

7. The automatic fastener clamping device according to claim 6, characterized in that: The bottom of the mounting groove (21) is fixedly connected to a support column three (29), and the top of the support column three (29) is fixedly connected to a limit plate (28).

8. The automatic fastener clamping device according to claim 7, characterized in that: The inner wall of the limiting plate (28) is fixedly connected with a second fastener (27), which extends downward.

9. The automatic fastener clamping device according to claim 8, characterized in that: The outer surface of the second fastener (27) is fixedly connected to a toothed ring (26), which is adapted to the bevel gear (25).

10. The automatic fastener clamping device according to claim 9, characterized in that: The bottom of the toothed ring (26) is fixedly connected to a bearing (31), the outer ring of the bearing (31) is connected to the toothed ring (26), and the bottom of the inner ring of the bearing (31) is fixedly connected to a support column four (32), the bottom of the support column four (32) is connected to the bottom of the mounting groove (21).

Images