Workpiece clamping device
By using a clamping method that combines electromagnets and permanent magnets, along with pressure sensors and automated slide rail components, the problem of difficult force control in traditional clamping devices is solved. This achieves flexible and precise workpiece clamping, protects the workpiece from damage, and improves welding efficiency and quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-13
- Publication Date
- 2026-04-10
AI Technical Summary
Traditional workpiece clamping devices are difficult to control the clamping force precisely, which can easily lead to workpiece deformation or damage. In particular, improper clamping of thin-walled parts and precision parts during welding can affect product quality and reliability.
The clamping method uses a combination of electromagnets and permanent magnets. The clamping force is adjusted by regulating the repulsive force between the permanent magnets and the electromagnets. A pressure sensor monitors and controls the clamping force. Combined with a slide rail assembly and an electric telescopic rod, the clamping is automated. After clamping, the clamping is automatically released by a spring.
It enables flexible adjustment of clamping force, protects the workpiece from damage, simplifies the workpiece loading and unloading process, and improves production efficiency and welding quality.
Smart Images
Figure CN224102191U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to clamping technical field especially relates to a workpiece clamping device. BACKGROUND
[0002] In the industrial manufacturing field, especially in the welding process, stable and accurate clamping of workpieces is a key step to ensure welding quality and efficiency. During the welding process, the workpiece needs to be kept in a fixed position and posture to prevent welding deviation, substandard weld quality, and other problems caused by shaking or displacement, thereby affecting the overall performance and reliability of the product.
[0003] Traditional workpiece clamping methods have many limitations. Some clamping devices use manual operation, making it difficult to accurately control the clamping force, which can easily damage the workpiece surface if clamped too tightly or cause displacement of the workpiece during the welding process if clamped too loosely. For some workpieces that are sensitive to clamping force, such as thin-walled parts and precision parts, improper clamping force can cause deformation or damage to the workpiece, affecting product quality.
[0004] With the increasing automation of industry and the increasing demand for product quality in manufacturing, there is an urgent need for a workpiece clamping device that can accurately, flexibly, and automatically clamp various welding workpieces, with adjustable clamping force, convenient operation, and strong adaptability, to meet the needs of modern industrial production for efficient and high-quality welding processing. SUMMARY
[0005] The utility model aims at solving the shortcomings in the prior art and provides a workpiece clamping device.
[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0007] A workpiece clamping device includes a mounting seat, a slide rail assembly is fixed to the top outer wall of the mounting seat, a moving seat is movably connected to the slide rail assembly, a moving plate is welded to the top outer wall of the moving seat, a clamping assembly is installed on the moving plate, the clamping assembly includes a bracket two, a backing plate, and a guide rod, the backing plate is welded to the top outer wall of the moving plate, the guide rod is movably connected to the inner wall of the through hole on the surface of the backing plate, the bracket two is fixed to one end of the guide rod, a connecting piece one and a connecting piece two are respectively welded to the bottom of the two brackets two, a middle plate is welded to one side of the outer wall of the connecting piece one, a pressure sensor is fixed to the middle plate, a V-shaped clamping plate one is fixed to the outer wall of the pressure sensor, a V-shaped clamping plate two is welded to one side of the outer wall of the connecting piece two, and the through hole on the surface of the middle plate and the connecting piece two is movably connected.
[0008] As a further scheme of the utility model: the slide rail assembly includes a slide plate, a containing plate and a backing plate, the containing plate and the backing plate are fixed to the top outer wall of the mounting seat, and the slide plate is fixed between the containing plate and the backing plate, and the movable seat and the slide plate are movably connected.
[0009] As a further scheme of the utility model: the mounting seat top outer wall is fixed with a fixed plate, and the fixed plate one side outer wall is fixed with an electric telescopic rod, and the electric telescopic rod output end is fixed with a connecting plate, and the connecting plate and the movable plate are welded and fixed.
[0010] As a further scheme of the utility model: the clamping assembly further includes a driving mechanism, the driving mechanism includes a vertical plate, a permanent magnet, a spring and a moving rod, the vertical plate is welded to the top outer wall of the movable plate, the moving rod is movably connected to the inner wall of the through hole formed in the surface of the vertical plate, the permanent magnet is fixed to one end of the moving rod, and the spring is fixed between the permanent magnet and the vertical plate at both ends.
[0011] As a further scheme of the utility model: the moving rod one end is welded with a bracket one, and the bracket one inner wall and the bracket two inner wall are movably connected with a swing arm.
[0012] As a further scheme of the utility model: the inner surface of the V-shaped clamping plate one and the V-shaped clamping plate two is bonded with a rubber pad.
[0013] As a further scheme of the utility model: the containing plate one side outer wall is fixed with a mounting shell, and the mounting shell one side inner wall is fixed with an electromagnet, and the electromagnet and the permanent magnet are used in cooperation.
[0014] As a further scheme of the utility model: the mounting seat top outer wall is provided with a controller, and the controller is electrically connected between the electric telescopic rod and the pressure sensor.
[0015] Compared with the prior art, the utility model provides a workpiece clamping device, has the following beneficial effects:
[0016] 1. The repulsion between the electromagnet and the permanent magnet is used to realize the clamping function, the distance between the permanent magnet and the electromagnet is reduced or the magnetic force of the electromagnet is increased, the repulsion between them is adjusted, and the pressure applied by the V-shaped clamping plate one and the V-shaped clamping plate two to the welding workpiece during clamping is flexibly adjusted, which not only ensures the stability of the workpiece clamping, but also effectively avoids the damage to the workpiece caused by excessive clamping force, and plays a good protective role on the welding workpiece.
[0017] 2. When the welding is finished, the permanent magnet is separated from the inside of the installation shell, and the V-shaped clamping plate one and the V-shaped clamping plate two are automatically released from clamping the welded workpiece by the rebound force of the spring, without manual operation, greatly simplifying the taking and placing process of the welded workpiece, saving operation time and labor cost, improving production efficiency, and making the whole processing process more smooth and efficient.
[0018] 3. The sliding rail assembly composed of the sliding plate, the accommodating plate and the backing plate guides the moving path of the moving seat, so that the moving seat and the moving plate can stably reciprocate along the sliding plate under the driving of the electric telescopic rod, and the whole operation of the workpiece clamping device is stable.
[0019] The parts not involved in the device are the same as or can be realized by the prior art, and the workpiece clamping device has the advantages of simple structure and convenient operation. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is an overall structure schematic view of the workpiece clamping device.
[0021] Figure 2 It is a side direction structure schematic view of the workpiece clamping device.
[0022] Figure 3 It is a clamping assembly main body structure schematic view of the workpiece clamping device.
[0023] Figure 4 It is an explosion structure schematic view of the clamping assembly of the workpiece clamping device.
[0024] Figure 5 It is a local structure schematic view of the clamping assembly of the workpiece clamping device.
[0025] Figure 6 It is a permanent magnet and electromagnet installation structure schematic view of the workpiece clamping device.
[0026] In the figure: mounting seat 1; moving plate 2; electric telescopic rod 3; fixed plate 4; controller 5; sliding plate 6; accommodating plate 7; installation shell 8; connecting plate 9; backing plate 10; moving seat 11; support one 12; support two 13; V-shaped clamping plate one 14; connecting sheet two 15; electromagnet 16; rubber pad 17; V-shaped clamping plate two 18; connecting sheet one 19; lining plate 20; guide rod 21; swing arm 22; vertical plate 23; permanent magnet 24; spring 25; moving rod 26; intermediate plate 27; pressure sensor 28. DETAILED DESCRIPTION
[0027] 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.
[0028] A workpiece clamping device, such as Figures 1 to 6 As shown, the device includes a mounting base 1, and a slide rail assembly is fixed to the top outer wall of the mounting base 1 by bolts. A movable base 11 is slidably connected to the slide rail assembly. A movable plate 2 is welded to the top outer wall of the movable base 11. A clamping assembly is installed on the movable plate 2. A fixing plate 4 is fixed to the top outer wall of the mounting base 1 by bolts. An electric telescopic rod 3 is fixed to one side outer wall of the fixing plate 4 by bolts. A connecting plate 9 is fixed to the output end of the electric telescopic rod 3 by bolts. The connecting plate 9 and the movable plate 2 are welded and fixed together.
[0029] Once the workpiece is placed on the movable plate 2, the clamping assembly can be used to clamp and fix the workpiece.
[0030] The slide rail assembly includes a slide plate 6, a receiving plate 7, and a pad 10. The receiving plate 7 and the pad 10 are both fixed to the top outer wall of the mounting base 1 by bolts, and the slide plate 6 is fixed between the receiving plate 7 and the pad 10 by bolts. The movable base 11 and the slide plate 6 are slidably connected.
[0031] The sliding plate 6 can guide the movement path of the movable seat 11, so that the movable seat 11 and the movable plate 2 can move along the sliding plate 6 under the drive of the electric telescopic rod 3.
[0032] The clamping assembly includes a second bracket 13, a liner 20, and a guide rod 21. The liner 20 is welded to the top outer wall of the movable plate 2, and the guide rod 21 is slidably connected to the inner wall of the through hole on the surface of the liner 20. The second bracket 13 is fixed to one end of the guide rod 21 by bolts. The bottom of the two second brackets 13 are respectively welded with a first connecting piece 19 and a second connecting piece 15. A middle plate 27 is welded to one side of the outer wall of the first connecting piece 19, and a pressure sensor 28 is fixed on the middle plate 27. A V-shaped clamping plate 14 is fixed to the outer wall of the pressure sensor 28, and a V-shaped clamping plate 18 is welded to one side of the outer wall of the second connecting piece 15. The through hole on the surface of the middle plate 27 and the second connecting piece 15 are movably connected.
[0033] The clamping assembly also includes a drive mechanism, which includes a vertical plate 23, a permanent magnet 24, a spring 25, and a moving rod 26. The vertical plate 23 is welded to the top outer wall of the moving plate 2, and the moving rod 26 is slidably connected to the inner wall of the through hole opened on the surface of the vertical plate 23. The permanent magnet 24 is fixed to one end of the moving rod 26 by screws, and the two ends of the spring 25 are respectively fixed between the permanent magnet 24 and the vertical plate 23. A bracket 12 is welded to one end of the moving rod 26, and a swing arm 22 is rotatably connected between the inner wall of the bracket 12 and the inner wall of the bracket 23.
[0034] When it is necessary to clamp and fix the welding workpiece, the moving rod 26 is driven to move along the vertical plate 23, in this process, the spring 25 is in a compressed state, the movement of the moving rod 26 along the vertical plate 23 is converted into the movement of the guide rod 21 and the bracket 13 along the lining plate 20 by the two sets of swing arms 22, so that the distance between the V-shaped clamping plate 14 and the V-shaped clamping plate 18 gradually decreases, and the welding workpiece is clamped and fixed after the V-shaped clamping plate 14 and the V-shaped clamping plate 18 are attached to the outer wall of the welding workpiece. The clamping force can be monitored by using the pressure sensor 28.
[0035] The inner surfaces of the V-shaped clamping plate 14 and the V-shaped clamping plate 18 are bonded with rubber pads 17;
[0036] The rubber pads 17 can increase friction during clamping of the welding workpiece by the V-shaped clamping plate 14 and the V-shaped clamping plate 18.
[0037] One side of the outer wall of the accommodating plate 7 is fixed with a mounting shell 8 through screws, and one side of the inner wall of the mounting shell 8 is fixed with an electromagnet 16 through screws, and the electromagnet 16 and the permanent magnet 24 are used in cooperation;
[0038] When the permanent magnet 24 is moved to the inside of the mounting shell 8 under the indirect drive of the electric telescopic rod 3, the electromagnet 16 is energized, the repulsive force between the electromagnet 16 and the permanent magnet 24 gradually increases by reducing the distance between the permanent magnet 24 and the electromagnet 16 or increasing the magnetic force of the electromagnet, the moving rod 26 slides along the vertical plate 23 by using the repulsive force between the electromagnet 16 and the permanent magnet 24, and the spring 25 is compressed in this process, until the welding workpiece is clamped and fixed by the V-shaped clamping plate 14 and the V-shaped clamping plate 18, the clamping force can be monitored by using the pressure sensor 28, the welding workpiece is protected by monitoring the clamping force, so as to avoid damage to the welding workpiece caused by excessive clamping force, and when the welding is completed and the permanent magnet 24 moves away from the inside of the mounting shell 8, the V-shaped clamping plate 14 and the V-shaped clamping plate 18 are automatically released from clamping the welding workpiece by using the elastic force of the spring 25, so as to facilitate taking and placing the welding workpiece.
[0039] The controller 5 is installed on the top outer wall of the mounting seat 1, and the controller 5 is electrically connected with the electric telescopic rod 3 and the pressure sensor 28;
[0040] The controller 5 can be used to control the electric telescopic rod 3, and the monitoring results of the pressure sensor 28 can be displayed.
[0041] Working principle: first, the welding workpiece is placed on the moving plate 2, the controller 5 controls the electric telescopic rod 3 to work, the electric telescopic rod 3 output end movement, when the permanent magnet 24 is indirectly driven by the electric telescopic rod 3 and moves to the inside of the installation shell 8, the electromagnet 16 is energized, the distance between the permanent magnet 24 and the electromagnet 16 is reduced or the magnetic force of the electromagnet is increased, the opposite poles of the opposite sides of the electromagnet 16 and the permanent magnet 24 are opposite, the repulsion between the electromagnet 16 and the permanent magnet 24 gradually increases, the repulsion between the electromagnet 16 and the permanent magnet 24 is used to make the moving rod 26 slide along the vertical plate 23, the spring 25 is compressed in the process, the movement of the moving rod 26 along the vertical plate 23 is converted into the movement of the guide rod 21 and the bracket 13 along the lining plate 20 by the two groups of swing arms 22, the distance between the V-shaped clamping plate one 14 and the V-shaped clamping plate two 18 is gradually reduced, until the V-shaped clamping plate one 14 and the V-shaped clamping plate two 18 clamp and fix the welding workpiece, the clamping force can be monitored by using the pressure sensor 28, the welding workpiece is protected by monitoring the clamping force, the clamping force is too large to cause damage to the welding workpiece, when the welding is completed and the permanent magnet 24 leaves the inside of the installation shell 8, the spring 25 is used to make the V-shaped clamping plate one 14 and the V-shaped clamping plate two 18 automatically release the clamping of the welding workpiece, which is convenient for taking and placing the welding workpiece.
[0042] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.
Claims
1. A workpiece clamping device comprising a mounting base (1), characterised in that, The outer wall of the top of the mounting base (1) is fixed with a sliding rail assembly, and a moving seat (11) is movably connected to the sliding rail assembly. The outer wall of the top of the moving seat (11) is welded with a moving plate (2), and a clamping assembly is installed on the moving plate (2). The clamping assembly comprises a bracket two (13), a lining plate (20) and a guide rod (21). The lining plate (20) is welded to the outer wall of the top of the moving plate (2), and the guide rod (21) is movably connected to the inner wall of the through hole formed on the surface of the lining plate (20). The bracket two (13) is fixed to one end of the guide rod (21). The bottom of each bracket two (13) is welded with a connecting piece one (19) and a connecting piece two (15), respectively. The outer wall of one side of the connecting piece one (19) is welded with an intermediate plate (27), and the intermediate plate (27) is fixed with a pressure sensor (28). The outer wall of the pressure sensor (28) is fixed with a V-shaped clamping plate one (14), and the outer wall of one side of the connecting piece two (15) is welded with a V-shaped clamping plate two (18). The through holes formed on the surfaces of the intermediate plate (27) and the connecting piece two (15) are movably connected.
2. A workpiece holding device according to claim 1, wherein The sliding rail assembly comprises a sliding plate (6), a containing plate (7) and a backing plate (10). The containing plate (7) and the backing plate (10) are both fixed to the outer wall of the top of the mounting base (1), and the sliding plate (6) is fixed between the containing plate (7) and the backing plate (10). The moving seat (11) and the sliding plate (6) are movably connected.
3. A workpiece holding device according to claim 2, wherein The outer wall of one side of the fixed plate (4) is fixed with an electric telescopic rod (3), and the output end of the electric telescopic rod (3) is fixed with a connecting plate (9). The connecting plate (9) and the moving plate (2) are fixedly connected by welding.
4. A workpiece holding device according to claim 3, wherein The clamping assembly further comprises a driving mechanism. The driving mechanism comprises a vertical plate (23), a permanent magnet (24), a spring (25) and a moving rod (26). The vertical plate (23) is welded to the outer wall of the top of the moving plate (2), and the moving rod (26) is movably connected to the through hole formed on the surface of the vertical plate (23). The permanent magnet (24) is fixed to one end of the moving rod (26), and the spring (25) is fixed between the permanent magnet (24) and the vertical plate (23).
5. A workpiece holding device according to claim 4, wherein One end of the moving rod (26) is welded with a bracket one (12), and the inner wall of the bracket one (12) and the inner wall of the bracket two (13) are movably connected with a swing arm (22).
6. A workpiece holding device according to claim 5, wherein The inner surfaces of the V-shaped clamping plate one (14) and the V-shaped clamping plate two (18) are both bonded with rubber pads (17).
7. A workpiece holding device according to claim 6, wherein The outer wall of one side of the containing plate (7) is fixed with a mounting shell (8), and the inner wall of one side of the mounting shell (8) is fixed with an electromagnet (16). The electromagnet (16) and the permanent magnet (24) are used in cooperation.
8. A workpiece holding device according to claim 7, wherein The outer wall of the top of the mounting base (1) is fixed with a controller (5), and the controller (5) is electrically connected with the electric telescopic rod (3) and the pressure sensor (28).