Mechanical clamp anti-pinch device

Abstract

The utility model relates to anti -pinch device technical field and disclose a kind of mechanical clamp anti -pinch device, including installation box, the left and right inner walls in installation box are all provided with sliding slot, anti -pinch component, anti -pinch component is set on two sliding slots, anti -pinch component includes two sliding blocks, two sliding blocks are respectively slidingly connected in the inner wall of two sliding slots, the opposite surface of two sliding blocks is fixedly connected with moving plate, moving plate is slidingly connected in the inner wall of installation box, the left end of moving plate slidingly penetrates out the left side of installation box, the left end of moving plate is fixedly connected with rubber plate, two installation boxes are symmetrically installed on the opposite surface of mechanical clamp, ensure that the stress of both sides of clamping object is uniform, cooperate the buffering effect of buffer spring, damper and the real-time monitoring of S-shaped pressure sensor, form the triple anti -pinch protection of " physical buffering + pressure detection + automatic stop", both guarantee the stability of clamping, and effectively avoid the situation of pinching.

Description

Technical Field

[0001] This utility model relates to the technical field of anti-pinch injury devices, specifically an anti-pinch injury device for mechanical clamps. Background Technology

[0002] In the fields of precision manufacturing and automated production, the anti-pinch performance of mechanical fixtures is directly related to workpiece quality and production safety—especially for fragile workpieces such as thin-walled parts and optical components, even minor damage during the clamping process can lead to product scrapping or even equipment downtime.

[0003] Traditional mechanical clamps commonly used in workshops rely on simple cushioning with rubber pads or springs for clamping protection. While this is generally sufficient for clamping ordinary metal parts, when the clamping force increases abnormally due to mechanical failure (such as cylinder malfunction or transmission component jamming), the cushioning capacity of the rubber pads and springs is limited and cannot trigger the shutdown protection in time. Sustained excessive pressure can directly lead to workpiece deformation, surface indentations, and even damage to the clamp's own structure, causing production accidents and cost losses. Therefore, a mechanical clamping anti-pinch device is needed. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a device to prevent pinching injuries in mechanical clamps. It solves the problem that traditional mechanical clamps commonly used in workshops rely heavily on simple cushioning with rubber pads or springs for clamping protection. While these are generally sufficient for clamping ordinary metal parts, when the clamping force abnormally increases due to mechanical failure (such as cylinder malfunction or transmission component jamming), the cushioning capacity of the rubber pads and springs is limited and cannot trigger the shutdown protection in time. Sustained excessive pressure can directly lead to workpiece deformation, surface indentations, and even damage to the clamp's own structure, causing production accidents and cost losses.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a mechanical clamp anti-pinch device, including a mounting box, wherein sliding grooves are provided on both the left and right inner walls of the mounting box; The anti-pinch component is set on two slide grooves. The anti-pinch component includes two sliders, which are slidably connected to the inner walls of the two slide grooves respectively. A movable plate is fixedly connected to the opposite face of the two sliders, and the movable plate is slidably connected to the inner wall of the mounting box. The left end of the movable plate slides through the left side of the mounting box. A rubber plate is fixedly connected to the left end of the movable plate. Anti-slip texture is provided on the left side of the rubber plate, which is used for direct contact with the clamping parts.

[0006] Preferably, two buffer springs are fixedly connected to the right side of the movable plate. The two buffer springs are arranged in a front-to-back configuration, and the right ends of both buffer springs are fixedly connected to the inner wall of the mounting box.

[0007] Preferably, both of the buffer springs are provided with dampers inside.

[0008] Preferably, the right ends of both dampers are fixedly connected to the inner wall of the mounting box.

[0009] Preferably, the telescopic ends of both dampers are fixedly connected to the movable plate.

[0010] Preferably, a fixing rod is fixedly connected to the left side of the movable plate, and a circular fixing plate is fixedly connected to the right side of the fixing rod.

[0011] Preferably, a connecting rod is fixedly connected to the right side of the circular fixing plate, and a spring is provided on the outer wall of the connecting rod, the length of which is longer than the length of the connecting rod.

[0012] Preferably, the left end of the spring is fixedly connected to the circular fixing plate.

[0013] Preferably, an S-shaped pressure sensor is provided at the right end of the spring, and the S-shaped pressure sensor is fixedly connected to the right inner wall of the mounting box.

[0014] Preferably, a circular plate is fixedly installed on the left side of the S-shaped pressure sensor. When clamped, the spring will contact the circular plate. There are two mounting boxes in total. The structures of the two mounting boxes are completely identical. The shape of the two mounting boxes can be processed according to the shape of the specific fixture.

[0015] (III) Beneficial Effects Compared with the prior art, this utility model provides a device for preventing pinching injuries in mechanical clamps, which has the following beneficial effects: 1. The anti-pinch device for this mechanical clamp has two mounting boxes symmetrically installed on opposite sides of the mechanical clamp to ensure that the clamped object is subjected to uniform force on both sides. Combined with the buffering effect of the buffer spring and damper and the real-time monitoring of the S-shaped pressure sensor, it forms a triple anti-pinch protection of "physical buffering + pressure detection + automatic stop", which not only ensures the stability of clamping, but also effectively avoids the occurrence of pinching injuries.

[0016] 2. The anti-pinch device of this mechanical clamp has the following features: When the moving plate moves to the right, the fixed rod on its right side will drive the circular fixed plate and the connecting rod to move to the right simultaneously. The spring on the right side of the circular fixed plate will gradually come into contact with the circular plate and be compressed. The length of the spring is longer than that of the connecting rod, which ensures that the connecting rod will not directly contact the S-shaped pressure sensor during the compression process, thus avoiding damage to the S-shaped pressure sensor due to rigid collision. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the anti-pinch device for mechanical clamps of this utility model; Figure 2 This is a schematic diagram of the interior of the mounting box of this utility model; Figure 3 This is a schematic diagram showing the position of the connecting rod of this utility model; Figure 4 This is a schematic diagram showing the position of the S-shaped pressure sensor of this utility model.

[0018] In the diagram: 1. Mounting box; 2. Rubber plate; 3. Moving plate; 4. Slider; 5. Fixing rod; 6. Circular fixing plate; 7. Spring; 8. Connecting rod; 9. Damper; 10. Buffer spring; 11. Slide groove; 12. Circular plate; 13. S-shaped pressure sensor; 14. Anti-slip texture. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 This utility model provides a new technical solution: a mechanical clamp anti-pinch device, including a mounting box 1, with sliding grooves 11 on both the left and right inner walls of the mounting box 1, and an anti-pinch component, which is set on the two sliding grooves 11. The anti-pinch component includes two sliders 4, which are slidably connected to the inner walls of the two sliding grooves 11 respectively. A movable plate 3 is fixedly connected to the opposite face of the two sliders 4, and the movable plate 3 is slidably connected to the inner wall of the mounting box 1. The left end of the movable plate 3 slides through the left side of the mounting box 1. A rubber plate 2 is fixedly connected to the left end of the movable plate 3. Anti-slip texture 14 is provided on the left side of the rubber plate 2. The rubber plate 2 is used for direct contact with the clamping parts.

[0021] Furthermore, two buffer springs 10 are fixedly connected to the right side of the movable plate 3. The two buffer springs 10 are arranged in a front-to-back configuration, and the right ends of the two buffer springs 10 are fixedly connected to the inner wall of the mounting box 1.

[0022] Furthermore, dampers 9 are provided inside both buffer springs 10.

[0023] Furthermore, the right ends of both dampers 9 are fixedly connected to the inner wall of the mounting box 1.

[0024] Furthermore, the telescopic ends of both dampers 9 are fixedly connected to the movable plate 3.

[0025] Furthermore, a fixing rod 5 is fixedly connected to the left side of the movable plate 3, and a circular fixing plate 6 is fixedly connected to the right side of the fixing rod 5.

[0026] Furthermore, a connecting rod 8 is fixedly connected to the right side of the circular fixing plate 6, and a spring 7 is provided on the outer wall of the connecting rod 8. The length of the spring 7 is longer than the length of the connecting rod 8.

[0027] Furthermore, the left end of the spring 7 is fixedly connected to the circular fixing plate 6.

[0028] Furthermore, an S-shaped pressure sensor 13 is provided at the right end of the spring 7, and the S-shaped pressure sensor 13 is fixedly connected to the right inner wall of the mounting box 1.

[0029] Furthermore, a circular plate 12 is fixedly installed on the left side of the S-shaped pressure sensor 13. When clamped, the spring 7 will contact the circular plate 12. There are two mounting boxes 1 in total. The structures of the two mounting boxes 1 are completely identical. The shape of the two mounting boxes 1 can be processed according to the shape of the specific fixture.

[0030] Furthermore, when using the anti-pinch device for this mechanical clamp, first install the two mounting boxes 1 on the mechanical clamp respectively. The installation method can be determined according to the specific situation (such as bolts or welding). When the mechanical clamp holds the object, the opposite surfaces of the two rubber plates 2 will come into contact with the object. When the mechanical clamp clamps the object, after the opposing surfaces of the two rubber plates 2 come into contact with the object, the mechanical clamp continues to apply clamping force. The rubber plates 2 will be subjected to the reaction force of the object, pushing the moving plate 3 to slide into the mounting box 1. The sliders 4 on the front and rear surfaces of the moving plate 3 slide synchronously along the slide groove 11, providing guidance for the movement of the moving plate 3 and ensuring that it moves only in the horizontal direction, avoiding tilting that could lead to uneven clamping. When the movable plate 3 slides to the right, the two buffer springs 10 on its right side will be compressed. The elastic deformation of the buffer springs 10 can initially absorb the impact force generated by the clamping force and reduce the damage to the clamped object caused by rigid contact. At the same time, the extension end of the damper 9 inside the buffer spring 10 contracts synchronously. The damper 9 reduces the vibration frequency of the buffer spring 10 through the damping effect, avoids the clamping force fluctuation caused by the high frequency vibration of the spring, and makes the clamping process more stable. When the movable plate 3 moves to the right, the fixed rod 5 on its right side will drive the circular fixed plate 6 and the connecting rod 8 to move to the right simultaneously. The spring 7 on the right side of the circular fixed plate 6 will gradually come into contact with the circular plate 12 and be compressed. The length of the spring 7 is longer than that of the connecting rod 8, ensuring that the connecting rod 8 will not directly contact the S-shaped pressure sensor 13 during the compression process, thus avoiding damage to the S-shaped pressure sensor 13 due to rigid collision. When the spring 7 is compressed, it applies pressure to the circular plate 12. The pressure is transmitted to the S-shaped pressure sensor 13 through the circular plate 12. The S-shaped pressure sensor 13 detects the magnitude of the clamping force in real time. When the detected pressure value exceeds the preset safety threshold, the S-shaped pressure sensor 13 sends a signal to the control system of the mechanical fixture. The control system immediately controls the fixture to stop applying the clamping force to prevent the clamped object from being damaged due to excessive pressure. Among them, the anti-slip texture 14 on the left side of the rubber plate 2 can increase the friction with the clamped object and prevent the object from sliding during the clamping process, which would cause excessive local force. The rubber plate 2 itself is soft and can adapt to the surface shape of the clamped object, avoiding scratches or pressure damage caused by hard contact. It is especially suitable for clamped objects that are fragile or have easily damaged surfaces.

[0031] Two mounting boxes 1 are symmetrically installed on opposite sides of the mechanical clamp to ensure that the clamped object is subjected to uniform force on both sides. Together with the buffering effect of the buffer spring 7 and the damper 9 and the real-time monitoring of the S-shaped pressure sensor 13, a triple anti-pinch protection of "physical buffering + pressure detection + automatic stop" is formed, which not only ensures the stability of clamping, but also effectively avoids the occurrence of pinching.

[0032] Structural Description: Slide 11: The slide is located on the left and right walls inside the mounting box 1, allowing the slider 4 to slide and restricting the movement direction of the moving plate 3. This ensures that the moving plate moves only horizontally and avoids tilting that could cause uneven force on the clamped object.

[0033] Slider 4: The movable plate 3 is slidably connected to the inner wall of the two slide grooves 11 respectively, and is fixedly connected to the movable plate. It provides guidance as the movable plate moves, ensuring that the movable plate slides smoothly and preventing tilting.

[0034] Mobile board 3: The sliding connection is attached to the inner wall of the mounting box 1. The left end is connected to the rubber plate 2, and the right end is connected to the buffer spring 10 and the fixing rod 5. It transmits the reaction force received by the rubber plate and provides a carrier for the linkage of various components.

[0035] Rubber sheet 2: Fixed to the left end of the movable plate 3, with anti-slip texture 14 on the left side, it directly contacts the object being held. The soft texture can adapt to the shape of the object's surface, avoiding hard contact that could cause pinching. The anti-slip texture increases friction to prevent slipping.

[0036] Anti-slip texture 14: Located on the left side of rubber plate 2, it increases the friction with the object being clamped, preventing the object from sliding during clamping and causing excessive local force, thus further avoiding the risk of pinching injury.

[0037] Buffer spring 10: Fixed between the right side of the movable plate 3 and the inner wall of the mounting box 1, with corresponding front and rear positions, it absorbs the clamping impact force through elastic deformation when compressed by the movable plate, providing initial buffering and protection for the clamped object.

[0038] Damper 9: Located inside the buffer spring 10, with its two ends connected to the inner wall of the mounting box 1 and the moving plate 3 respectively, it reduces the vibration frequency of the buffer spring through damping, avoids high-frequency vibration of the spring causing fluctuations in clamping force, and makes clamping more stable.

[0039] Fixed rod 5: Fixed at the middle position on the left side of the movable plate 3, with a circular fixed plate 6 connected to the right end, it moves synchronously with the movable plate, transmitting the displacement of the movable plate to the spring 7 and the S-shaped pressure sensor 13.

[0040] Circular fixing plate 6: Fixed to the right end of the fixed rod 5, the right side connects to the connecting rod 8 and the spring 7, and the left end of the spring is fixed to ensure that the spring is subjected to uniform force and can stably transmit pressure.

[0041] Connecting rod 8: Fixed to the right side of the circular fixing plate 6, the outer wall is fitted with a spring 7, which is shorter than the spring 7 to prevent the connecting rod from directly contacting the S-shaped pressure sensor 13 when the spring is compressed, thus protecting the sensor from rigid impacts.

[0042] Spring 7: It is fitted onto the outer wall of the connecting rod 8, with the left end connected to the circular fixing plate 6 and the right end in contact with the circular plate 12. When compressed, it transmits the pressure to the S-shaped pressure sensor 13, and at the same time plays a secondary buffering role.

[0043] S-shaped pressure sensor 13: It is fixed inside the left inner wall of the mounting box 1, and the left side is connected to the circular plate 12. It detects the pressure value transmitted by the spring in real time. When it exceeds the preset threshold, it sends a signal to the control system to control the clamp to stop applying force.

[0044] Circular plate 12: Fixed to the left side of the S-shaped pressure sensor 13, in contact with the spring 7, the pressure of the spring is evenly transmitted to the sensor, avoiding excessive local force caused by the spring directly contacting the sensor.

[0045] 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 device for preventing pinching injuries in mechanical clamps, characterized in that, include: The mounting box (1) has sliding grooves (11) on both the left and right inner walls. The anti-pinch component is set on two slide grooves (11). The anti-pinch component includes two sliders (4). The two sliders (4) are slidably connected to the inner walls of the two slide grooves (11). The opposite surfaces of the two sliders (4) are fixedly connected to a movable plate (3). The movable plate (3) is slidably connected to the inner wall of the mounting box (1). The left end of the movable plate (3) slides through the left side of the mounting box (1). The left end of the movable plate (3) is fixedly connected to a rubber plate (2). Anti-slip texture (14) is provided on the left side of the rubber plate (2). The rubber plate (2) is used for direct contact with the clamping parts.

2. The anti-pinch device for mechanical clamps according to claim 1, characterized in that: Two buffer springs (10) are fixedly connected to the right side of the movable plate (3). The two buffer springs (10) are arranged in a front-to-back correspondence. The right ends of the two buffer springs (10) are fixedly connected to the inner wall of the mounting box (1).

3. The anti-pinch device for mechanical clamps according to claim 2, characterized in that: Both of the buffer springs (10) have dampers (9) installed inside them.

4. The anti-pinch device for mechanical clamps according to claim 3, characterized in that: The right ends of both dampers (9) are fixedly connected to the inner wall of the mounting box (1).

5. The anti-pinch device for mechanical clamps according to claim 3, characterized in that: The telescopic ends of both dampers (9) are fixedly connected to the movable plate (3).

6. The anti-pinch device for mechanical clamps according to claim 1, characterized in that: A fixing rod (5) is fixedly connected to the left side of the movable plate (3), and a circular fixing plate (6) is fixedly connected to the right side of the fixing rod (5).

7. The anti-pinch device for mechanical clamps according to claim 6, characterized in that: A connecting rod (8) is fixedly connected to the right side of the circular fixing plate (6). A spring (7) is provided on the outer wall of the connecting rod (8). The length of the spring (7) is longer than the length of the connecting rod (8).

8. The anti-pinch device for mechanical clamps according to claim 7, characterized in that: The left end of the spring (7) is fixedly connected to the circular fixing plate (6).

9. A mechanical clamp anti-pinch device according to claim 7, characterized in that: An S-shaped pressure sensor (13) is provided at the right end of the spring (7), and the S-shaped pressure sensor (13) is fixedly connected to the right inner wall of the mounting box (1).

10. A mechanical clamp anti-pinch device according to claim 9, characterized in that: A circular plate (12) is fixedly installed on the left side of the S-shaped pressure sensor (13). When clamped, the spring (7) will contact the circular plate (12). There are two mounting boxes (1) in total. The structures of the two mounting boxes (1) are completely identical. The shape of the two mounting boxes (1) can be processed according to the shape of the specific fixture.

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