A convenient cleaning clamp jaw structure for metal processing
By incorporating ventilation plates and push plates on the grippers, airflow is used to automatically clean debris from the gaps between the grippers, solving the problem of grippers not being able to clean themselves automatically and improving the production efficiency and workpiece quality of metal processing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN QIANHE PRECISION MASCH MFG CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-07-21
AI Technical Summary
Existing grippers cannot automatically clean themselves during metal processing, causing waste chips to enter the gaps, affecting workpiece surface quality and production efficiency.
A gripper structure including a ventilation plate, a push plate, and an air supply component was designed. The structure uses airflow to clean the recesses of the friction part, and the push plate pushes out residual impurities when the gripper is released, thus achieving automated cleaning.
It effectively cleans debris from the gaps in the grippers, reduces damage to the workpiece, improves production efficiency, reduces manual cleaning steps, and enhances cleaning convenience.
Smart Images

Figure CN224527259U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of gripper technology, and in particular relates to a gripper structure for easy cleaning in metal processing. Background Technology
[0002] In the modern metalworking industry, grippers, as the core actuators for workpiece clamping and positioning, are widely used in automated machining scenarios such as lathes, milling machines, and stamping equipment. To ensure workpiece stability during cutting, drilling, bending, and other processing, and to avoid displacement or slippage due to insufficient clamping force, technicians often design intermittent gap structures at the contact points between the grippers and the metal workpiece. This design, by increasing the roughness of the contact surface and utilizing the principle of increased friction coefficient, effectively enhances the gripping force of the grippers on the metal workpiece, and is particularly suitable for machining smooth-surfaced metal materials (such as aluminum alloys and stainless steel).
[0003] However, the above structure has revealed significant drawbacks in practical applications. Waste chips generated during metal processing (such as iron filings, aluminum powder, and oil mixtures) can easily enter the intermittent gaps when the grippers open and close and when workpieces are loaded and unloaded, causing the gaps to become clogged and filled. Residual waste chips can cause scratches, indentations, and other damage to the surface of subsequently gripped workpieces, especially in the machining of precision parts (such as aero-engine blades and electronic chip substrates), directly affecting the product yield. If the grippers are used in automated production lines, the malfunctions caused by waste chip accumulation require frequent shutdowns for maintenance, leading to a decrease in production efficiency. Traditional grippers cannot automatically clean themselves during operation, which seriously affects the use of the grippers. Utility Model Content
[0004] In view of the problems existing in the prior art, this utility model provides a gripper structure for easy cleaning in metal processing, which solves the problem that existing grippers cannot be automatically cleaned during use, which makes them prone to damaging metal parts.
[0005] This utility model is implemented as follows: a chuck structure for easy cleaning in metal processing includes a mounting plate, a movable plate slidably disposed on the mounting plate, multiple chucks disposed at equal angles on the movable plate, and friction parts disposed on the chucks, and further includes:
[0006] A cleaning component, mounted on a gripper, is used for cleaning the friction part. It includes a ventilation plate that is slidably mounted on the gripper, and the ventilation plate has multiple air holes that communicate with it. The air holes are located on one side of the friction part.
[0007] Multiple push plates are mounted on the ventilation plate and slidably disposed within the gripper. The push plates are located inside the friction part and are used for cleaning the friction part.
[0008] In a preferred embodiment of this invention, the friction part is composed of multiple strip plates forming a concave shape, and the multiple concave shapes are arranged linearly, with the push plate slidably disposed in the recess of the concave shape.
[0009] In a preferred embodiment of this invention, the plurality of push plates are connected by a connecting rod fixedly disposed on the lower side of the ventilation plate, and the connecting rod is slidably disposed on the gripper.
[0010] As a preferred embodiment of this invention, a ball bearing is rotatably provided at the end of the ventilation plate to push the ventilation plate to slide.
[0011] As a preferred embodiment of this invention, two springs are fixedly provided on the rear side of the ventilation plate, and the springs are fixedly provided on the gripper.
[0012] As a preferred embodiment of this invention, the gripper is further provided with an air supply component for providing airflow to the ventilation plate.
[0013] As a preferred embodiment of this utility model, the air supply assembly includes a piston portion disposed between the mounting plate and the moving plate, and an air box disposed on the gripper and communicating with the piston portion. The air box and the ventilation plate are interconnected through an external air pipe.
[0014] As a preferred embodiment of the present invention, the piston part includes a fixed tube fixedly mounted on a movable plate and a piston rod slidably mounted inside the fixed tube. The fixed tube is connected to the bellows through a flexible hose, which is located in the upper half of the fixed tube.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0016] When the grippers in this device release an object, they can fully push the piston to generate airflow. This airflow acts on the friction part, effectively cleaning the recesses of the friction part and ensuring its cleanliness. Simultaneously, when the grippers relax, the push plate slides in the recesses, pushing out any impurities that the airflow cannot completely remove. This further improves the ease of cleaning, making the cleaning process more automated and convenient, reducing the accumulation of waste and minimizing manual cleaning steps. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the front view structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the structure from the lower side view of this utility model;
[0019] Figure 3 This is a schematic diagram of the partial front-view separation structure of this utility model;
[0020] Figure 4This is a schematic diagram of the partial left-side view separation structure of this utility model.
[0021] In the picture:
[0022] 1. Mounting plate; 2. Moving plate; 3. Gripper; 4. Ventilation plate; 5. Air hole; 6. Connecting rod; 7. Push plate; 8. Spring; 9. Ball bearing; 10. Fixing tube; 11. Piston rod; 12. Air box; 13. Friction part. Detailed Implementation
[0023] To further understand the utility model content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.
[0024] The structure of this utility model will now be described in detail with reference to the accompanying drawings.
[0025] like Figures 1 to 4 As shown in the figure, the present invention provides a metalworking gripper structure that is easy to clean, including a mounting plate 1, a movable plate 2 slidably disposed on the mounting plate 1, a plurality of grippers 3 disposed at equal angles on the movable plate 2, and a friction part 13 disposed on the grippers 3, and further including:
[0026] A cleaning component, mounted on the gripper 3, is used for cleaning the friction part 13. It includes a ventilation plate 4 that is slidably mounted on the gripper 3, and the ventilation plate 4 has a plurality of air holes 5 that communicate with it. The air holes 5 are located on one side of the friction part 13.
[0027] Multiple push plates 7 are mounted on the ventilation plate 4 and slidably mounted in the gripper 3. The push plates 7 are located inside the friction part 13 and are used for cleaning the friction part 13.
[0028] As a preferred embodiment of this invention, the friction part 13 is fixed to the gripper 3 by multiple strip plates, forming a concave shape with the surface of the gripper 3, and the multiple concave shapes are arranged linearly. The push plate 7 is slidably disposed in the concave recess. When the gripper 3 is not clamping, the push plate 7 seals the recess, thereby fully pushing out the waste debris in the recess and preventing the waste debris from clogging the recess, thus affecting the clamping of the friction part 13.
[0029] As a preferred embodiment of this utility model, multiple push plates 7 are connected by a connecting rod 6 fixedly disposed on the lower side of the ventilation plate 4, and the connecting rod 6 is slidably disposed on the gripper 3, so as to simultaneously push multiple push plates 7 to move in the recess, thereby fully cleaning the friction part 13 and ensuring the cleanliness of the friction part 13.
[0030] As a preferred embodiment of this utility model, a ball bearing 9 is rotatably provided at the end of the ventilation plate 4 for pushing the ventilation plate 4 to slide. When the gripper 3 clamps, the ball bearing 9 can simultaneously contact the object, and the squeezing force at the contact can fully push the ventilation plate 4 and the push plate 7, so that the gripper 3 can fully clamp the object and prevent it from affecting the clamping effect of the equipment during use.
[0031] As a preferred embodiment of this utility model, two springs 8 are fixedly provided on the rear side of the ventilation plate 4, and the springs 8 are fixedly provided on the gripper 3, which facilitates the movement of the ventilation plate 4 and the push plate 7. At the same time, when the gripper 3 is released, the elastic force of the springs 8 can push it to reset, thereby fully cleaning the friction part 13 of the gripper 3.
[0032] As a preferred embodiment of this utility model, the gripper 3 is also provided with an air supply component for providing airflow to the ventilation plate 4, which facilitates the cleaning of the gaps in the friction part 13 through the flow of gas. At the same time, the airflow acts on the push plate 7 to keep the push plate 7 and the gaps clean and prevent the accumulation of waste.
[0033] As a preferred embodiment of this utility model, the air supply assembly includes a piston portion disposed between the mounting plate 1 and the movable plate 2, and a bellows 12 disposed on the gripper 3 and communicating with the piston portion. The bellows 12 and the ventilation plate 4 are communicating with each other through an external air pipe. The piston portion can be driven to generate gas by the gripper 3 clamping or releasing. At the same time, the gas enters the ventilation plate 4 through the bellows 12, thereby effectively cleaning the friction part 13.
[0034] As a preferred embodiment of this utility model, the piston part includes a fixed tube 10 fixedly mounted on the movable plate 2 and a piston rod 11 slidably mounted inside the fixed tube 10. The fixed tube 10 is connected to the bellows 12 through a flexible hose. The flexible hose is located in the upper half of the fixed tube 10, which makes the equipment more automated and convenient during cleaning, reduces the installation of external equipment, and enables automatic cleaning.
[0035] The working principle of this utility model:
[0036] refer to Figure 1 and Figure 2 In the initial state of the friction part 13, the push plate 7 is located in the recess of the friction part 13, so that the push plate 7 fills the recess. At this time, the ventilation plate 4 is parallel to one side of the friction part 13, and the air holes of the ventilation plate 4 are aligned with one side of the friction part 13.
[0037] refer to Figure 2 and 3When the equipment clamps, the existing hydraulic rod pushes the moving plate 2 to rise. At this time, the multiple grippers 3 on the moving plate 2 approach each other to clamp the object. When the multiple grippers 3 approach each other, the ball bearings 9 on the ventilation plate 4 will contact the object first. As the grippers 3 approach, the ball bearings 9 will push the ventilation plate 4 and the push plate 7 to move away from the object being clamped. At the same time, the spring 8 is compressed. As the push plate 7 gradually moves away from the recess of the friction part 13, the inner side of the friction part 13 forms a concave shape. When the grippers 3 rotate to a certain angle, the friction part 13 contacts the object. At this time, the clamping force of the grippers 3 can effectively clamp and process the goods.
[0038] After the object is processed, the drive plate 2 descends, and the multiple grippers 3 move away from each other. When the drive plate 2 descends, the piston rod 11 slides upward in the fixed tube 10, causing the fixed tube 10 to be stretched relative to the piston rod 11. At this time, the piston rod 11 compresses the air in the fixed tube 10 and causes it to enter the bellows 12. Simultaneously, it enters the ventilation plate 4 through the bellows 12 and is discharged through the air hole 5 on one side of the ventilation plate 4. The discharged gas acts on the gap of the friction part 13, which can be cleaned from the side. At this time, due to the rebound of the spring 8, the push plate 7 gradually fills the interior of the friction part 13 again, thereby squeezing out the waste that the gas cannot clean, thus ensuring the cleanliness of the recess and preventing a large amount of waste from clogging the recess and affecting the use of the equipment.
[0039] When the gripper 3 in this device releases the object it is holding, it can fully push the piston part to generate airflow. The airflow acts on the friction part 13, which can fully clean the recessed area of the friction part 13, ensuring the cleanliness of the friction part. At the same time, when the gripper 3 is released, the push plate 7 slides in the recessed area, which can push out the impurities that the airflow cannot completely clean from the recessed area, further improving the cleaning convenience of the device, making the device more automated and convenient to clean, reducing the accumulation of waste, and reducing manual cleaning steps.
[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0041] 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 convenient-to-clean gripper structure for metal processing, comprising a mounting plate (1), a movable plate (2) slidably disposed on the mounting plate (1), a plurality of grippers (3) disposed at equal angles on the movable plate (2), and friction portions (13) disposed on the grippers (3), characterized in that: Also includes: A cleaning assembly is provided on the gripper (3) for cleaning the friction part (13), including a ventilation plate (4) slidably provided on the gripper (3), and a plurality of air holes (5) communicating with it are provided on the ventilation plate (4), the air holes (5) being located on one side of the friction part (13); Multiple push plates (7) are disposed on the ventilation plate (4) and slidably disposed in the gripper (3). The push plates (7) are disposed inside the friction part (13) for cleaning the friction part (13).
2. The easy-to-clean gripper structure for metal processing as described in claim 1, characterized in that: The friction part (13) is fixed on the gripper (3) by multiple strip plates, so that it forms a concave shape with the surface of the gripper (3), and the multiple concave shapes are arranged linearly. The push plate (7) is slidably disposed in the concave recess.
3. The easy-to-clean gripper structure for metal processing as described in claim 2, characterized in that: Multiple push plates (7) are connected by a connecting rod (6) fixedly disposed on the lower side of the ventilation plate (4), and the connecting rod (6) is slidably disposed on the gripper (3).
4. The easy-to-clean gripper structure for metal processing as described in claim 3, characterized in that: The end of the ventilation plate (4) is also rotatably provided with a ball bearing (9) for pushing the ventilation plate (4) to slide.
5. The easy-to-clean gripper structure for metal processing as described in claim 4, characterized in that: Two springs (8) are fixedly installed on the rear side of the ventilation plate (4), and the springs (8) are fixedly installed on the gripper (3).
6. The easy-to-clean gripper structure for metal processing as described in claim 5, characterized in that: The gripper (3) is also provided with an air supply component for providing airflow to the ventilation plate (4).
7. The easy-to-clean gripper structure for metal processing as described in claim 6, characterized in that: The air supply assembly includes a piston portion disposed between the mounting plate (1) and the movable plate (2), and a bellows (12) disposed on the gripper (3) and communicating with the piston portion. The bellows (12) and the ventilation plate (4) are communicating with each other through an external air pipe.
8. The easy-to-clean gripper structure for metal processing as described in claim 7, characterized in that: The piston part includes a fixed tube (10) fixedly mounted on the movable plate (2) and a piston rod (11) slidably mounted inside the fixed tube (10). The fixed tube (10) is connected to the bellows (12) through a flexible hose, which is located in the upper half of the fixed tube (10).