A clamping device

Abstract

The utility model belongs to CNC processing equipment technical field, specifically discloses a kind of clamping equipment, it includes mounting seat, suction unit and first clamping unit;Suction unit includes suction seat, the suction seat is installed in the mounting seat, and the suction seat top is formed with vacuum suction space;First clamping unit includes the clamping seat installed in the mounting seat and the clamping assembly installed in the clamping seat, and the clamping seat is located in the side of the suction seat, and the clamping assembly has the first clamping end that can be close to or away from the suction seat.This application's clamping equipment can make up the defect of vacuum suction, solve the problem that the suction force of vacuum clamping equipment can be greatly reduced when vibration, airflow disturbance or micro gap exists on product surface is generated in processing process, maintain the stability of product, and guarantee product processing precision.

Description

Technical Field

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

[0002] Vacuum clamping equipment is widely used in the current CNC machining field. However, existing vacuum clamping equipment has many limitations.

[0003] Traditional vacuum clamping equipment mainly relies on a single vacuum adsorption force to fix products. However, the stability of the adsorption force is difficult to guarantee when facing complex working conditions. For example, when vibration, airflow disturbance, or tiny gaps exist on the product surface during processing, the adsorption force of the vacuum clamping equipment will drop significantly, causing the product to shift, which seriously affects the processing accuracy and may even result in scrap. As a result, it is necessary to add processes to meet the quality and accuracy requirements. Therefore, there is an urgent need for a clamping equipment that can improve the stability of tooling clamping. Utility Model Content

[0004] The purpose of this utility model is to provide a clamping device to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0005] The solution to the technical problem of this utility model is:

[0006] A clamping device comprising:

[0007] Mounting base;

[0008] An adsorption unit includes an adsorption seat, which is mounted on a mounting base, and a vacuum adsorption space is formed on the top of the adsorption seat;

[0009] The first clamping unit includes a clamping seat mounted on the mounting base and a clamping assembly mounted on the clamping seat. The clamping seat is located on the side of the adsorption base, and the clamping assembly has a first clamping end that can move closer to or further away from the adsorption base.

[0010] This technical solution has at least the following beneficial effects: When using a clamping device to clamp a product, the product is placed on the vacuum adsorption space at the top of the adsorption seat, and the product is fixed to the mounting seat by vacuum suction, thereby processing and transferring the product. When the adsorption seat is affected by vibration or airflow, causing it to not fit closely to the product and potentially causing the product to shift, the first clamping end of the first clamping unit quickly moves towards the adsorption seat until it presses against the product, pressing the product firmly onto the adsorption seat. This application, through the first clamping unit, compensates for the defects of vacuum adsorption, solves the problem that the adsorption force of the vacuum clamping device will decrease significantly when vibration, airflow disturbance or fine gaps exist on the product surface during processing, maintains product stability, and ensures product processing accuracy.

[0011] As a further improvement to the above technical solution, the clamping assembly includes a clamping part, a hinge part, and a first pushing part. One end of the hinge part is rotatably connected to the side of the clamping seat near it, and the other end of the hinge part away from the clamping seat is rotatably connected to the clamping part. The first pushing part is movable in the vertical direction on the clamping seat. The first pushing part is located on the side of the hinge part away from the suction seat. The end of the first pushing part away from the clamping seat is rotatably connected to the end of the clamping part away from the hinge part. The top end of the clamping part near the suction seat is the first clamping end.

[0012] As a further improvement to the above technical solution, the clamping part can be moved until the projection of the first clamping end on the horizontal plane is completely located inside the projection of the adsorption seat on the horizontal plane or they do not overlap.

[0013] As a further improvement to the above technical solution, a pressure sensor is provided on the clamping seat. When the clamping part moves to the point where the projection of the first clamping end on the horizontal plane does not overlap with the projection of the adsorption seat on the horizontal plane, the clamping part abuts against the pressure sensor.

[0014] As a further improvement to the above technical solution, the adsorption seat is provided with a plurality of the first clamping units along the circumferential direction.

[0015] As a further improvement to the above technical solution, the adsorption seat is provided with a positioning component, the positioning component including a positioning top block, the projection of the positioning top block on the horizontal plane and the projection of the adsorption seat on the horizontal plane do not overlap.

[0016] As a further improvement to the above technical solution, the mounting base is provided with a second clamping unit, the adsorption base has a mounting hole in the middle, the second clamping unit is located at the mounting hole, and the second clamping unit has a second clamping end that can move toward or away from the adsorption base.

[0017] As a further improvement to the above technical solution, the top of the adsorption seat is provided with an adsorption groove with an upward opening, and the adsorption groove forms the vacuum adsorption space. The mounting seat is provided with a vacuum generating component, which is connected to the inside of the adsorption groove.

[0018] As a further improvement to the above technical solution, a sealing groove is provided on the top of the adsorption seat along the circumference of the adsorption groove, and a sealing strip is installed in the sealing groove.

[0019] As a further improvement to the above technical solution, a detection unit is also included. The detection unit includes a vacuum pressure gauge and a control component. The vacuum pressure gauge is used to detect the vacuum level in the vacuum adsorption space. When the vacuum level in the vacuum adsorption space reaches a threshold, the control component controls the first clamping unit to start moving the first clamping end toward the adsorption seat. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the clamping device of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of the clamping device of this utility model when a product is placed on it;

[0023] Figure 3 yes Figure 2 Enlarged view of A in the middle;

[0024] Figure 4 This is a top view of the clamping device of this utility model. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] In the current CNC machining field, vacuum adsorption clamping equipment has been widely used. However, traditional vacuum adsorption clamping equipment still has limitations. In actual production, when facing complex working conditions, the suction stability of the clamping equipment is difficult to guarantee. For example, when mass-producing thin plates, cover plates, and other products with different shapes and surfaces, insufficient adsorption force can easily lead to processing vibration and product displacement. This requires adding processes or manually adjusting the position of the product on the clamping equipment to meet processing requirements. Moreover, once the product shifts position or the adsorption force changes during processing, the equipment generally cannot respond in time, which further limits the improvement of processing efficiency and quality. Therefore, this application provides a clamping equipment that can overcome the defects of vacuum adsorption clamping and ensure processing accuracy.

[0030] The clamping device provided in this application includes a mounting base 1, an adsorption unit 2, a first clamping unit 3, and a second clamping unit 4. The adsorption unit 2 adsorbs the product 101 and fixes it to the mounting base 1. The first clamping unit 3 and the second clamping unit 4 can physically clamp the product 101 when the adsorption unit 2 has insufficient suction force on the product 101, thereby improving the stability of the product 101 on the mounting base 1.

[0031] Specifically, refer to Figure 1-4The adsorption unit 2 includes an adsorption seat 21, which is mounted on the mounting base 1. The top shape of the adsorption seat 21 is adapted to the product 101. The top of the adsorption seat 21 can form a vacuum adsorption space 22, and the product 101 can completely cover the vacuum adsorption space 22. The first clamping unit 3 includes a clamping seat 31 mounted on the mounting base 1 and a clamping assembly mounted on the clamping seat 31. The clamping seat 31 is located on the side of the adsorption seat 21. The clamping assembly has a first clamping end 321 that can move toward or away from the top of the adsorption seat 21. When the product 101 is placed on the adsorption seat 21 and the adsorption unit 2 has insufficient suction on the product 101, the first clamping end 321 moves toward the adsorption seat 21 and presses against the surface of the product 101.

[0032] As described above, when using the clamping device to clamp the product 101, the product 101 is placed on the vacuum adsorption space 22 at the top of the adsorption seat 21. The product 101 is fixed to the mounting seat 1 by vacuum suction, thereby processing and transferring the product 101. When the adsorption seat 21 is affected by vibration or airflow, causing it to not fit closely to the product 101 and potentially causing the product 101 to shift, the first clamping end 321 of the first clamping unit 3 quickly moves towards the adsorption seat 21 until it presses against the product 101, pressing the product 101 firmly onto the adsorption seat 21. This application, through the first clamping unit 3, compensates for the defects of vacuum adsorption, solves the problem that the adsorption force of the vacuum clamping device will decrease significantly when vibration, airflow disturbance or fine gaps exist on the surface of the product 101 occur during processing, maintains the stability of the product 101, and ensures the processing accuracy of the product 101.

[0033] In practical use, engineers can either activate the adsorption seat 21 alone to grab the product 101 through vacuum adsorption, or use the clamping component alone to clamp the product 101 on the surface of the adsorption seat 21 through the first clamping end 321, or combine the two to compensate the adsorption unit through the clamping component and thus press the product.

[0034] Because the product 101 placed on the adsorption seat 21 needs to be processed from above, the clamping seat 31 is set on the side of the adsorption seat 21. In order to expand the operable space above the adsorption seat 21 and reduce the impact of the first clamping end 321 on the processing, the clamping assembly includes a clamping part 32, a hinge part 33 and a first pushing part 34. One end of the hinge part 33 is rotatably connected to the side of the clamping seat 31 near it, and the other end of the hinge part 33 away from the clamping seat 31 is rotatably connected to the clamping part 32. The first pushing part 34 can move in the vertical direction of the clamping seat 31 and is located on the side of the hinge part 33 away from the adsorption seat 21. The end of the first pushing part 34 away from the clamping seat 31 is rotatably connected to the end of the clamping part 32 away from the hinge part 33. The top end of the clamping part 32 near the adsorption seat 21 is the first clamping end 321. Specifically, the first pushing part 34 can be a cylinder or a hydraulic cylinder. The end of the first pushing part 34 away from the clamping seat 31 is the output end. The output end of the first pushing part 34 is connected to the clamping part 32. The rotation axes of the hinge part 33 and the clamping part 32 both extend in a direction parallel to the horizontal. The clamping part 32 can move until the projection of the first clamping end 321 on the horizontal plane is completely inside the projection of the adsorption seat 21 on the horizontal plane or they do not overlap.

[0035] Furthermore, each clamping component can be controlled independently by the controller, thereby controlling the clamping part 32 of one or more clamping components to clamp or release, avoiding the tool machining path to complete the machining of the outline, surface, hole, groove, etc.

[0036] Furthermore, a pressure block is provided on the side of the clamping part 32 near the adsorption seat 21. After the clamping seat 31 moves toward the adsorption seat 21, the pressure block abuts against the product 101 placed on the adsorption seat 21 and the bottom of the pressure block is parallel to the horizontal plane.

[0037] By adopting the above technical solution, when it is necessary to flip the clamping part 32 so that the pressure block on the clamping part 32 moves closer to the adsorption seat 21, the first pushing part 34 rises, pushing the clamping part 32 to rotate about the axis of connection with the hinge part 33. When the clamping part 32 rotates to a certain angle, the clamping part 32 drives the hinge part 33 to rotate relative to the clamping seat 31, so that the flipping axis of the clamping part 32 continues to move closer to the adsorption seat 21 in the horizontal direction, so that the clamping part 32 can move closer to the adsorption seat 21 while flipping. When the clamping part 32 flips back to the outside of the adsorption seat 21, the first pushing part 34 rises, pushing the clamping part 32 to rotate about the axis of connection with the hinge part 33. 34 descends, causing the clamping part 32 to rotate away from the adsorption seat 21 with the connection point with the hinge part 33 as the axis. After the clamping part 32 rotates to a certain angle, it causes the hinge part 33 to rotate away from the adsorption seat 21 with the connection point with the clamping seat 31 as the axis of rotation. This causes the rotation axis of the clamping part 32 to move continuously away from the adsorption seat 21 in the horizontal direction. At the same time, the clamping part 32 rotates away from the adsorption seat 21, so that the clamping part 32 can move towards the adsorption seat 21 while rotating. This allows the horizontal projection of the pressure block after the clamping part 32 rotates to completely detach from the horizontal projection of the adsorption seat 21.

[0038] In order to ensure that the processing equipment for product 101 only starts processing after the clamping part 32 has completely exited above the adsorption block and the area above product 101 has been cleared, a pressure sensor 35 is provided on the clamping seat 31, and a pressing block 36 is provided on the side of the clamping block away from the adsorption seat 21. When the clamping part 32 moves to a point where the projection of the first clamping end 321 on the horizontal plane does not overlap with the projection of the adsorption seat 21 on the horizontal plane, the pressing block 36 on the clamping part 32 abuts against the pressure sensor 35. That is, when the pressure sensor 35 senses the pressure brought by the pressing block 36, the processing equipment for product 101 starts to operate and process product 101. In this way, the processing equipment for product 101 can avoid being positioned relative to the clamping part 32, reducing the safety risks caused by collisions.

[0039] As a further embodiment, the adsorption seat 21 is provided with a plurality of first clamping units 3 along the circumference. The plurality of first clamping units 3 can move synchronously or individually, thereby clamping different parts of the product 101.

[0040] In order to enable the adsorption unit 2 and the first clamping unit 3 to accurately clamp the product 101 at the predetermined position, a positioning component 5 is provided on the adsorption seat 21. The positioning component 5 includes a pair of positioning top blocks 51. The two positioning top blocks 51 are respectively installed on the adsorption seat 21 along the diagonal position. The projection of the positioning top block 51 on the horizontal plane does not overlap with the projection of the adsorption seat 21 on the horizontal plane. When the product 101 is placed on the adsorption seat 21, the positioning top block 51 can be inserted into the positioning hole reserved on the product 101. The two positioning top blocks 51 act synchronously, thereby initially positioning the product 101 on the adsorption seat 21.

[0041] As a further embodiment of the above embodiments, the positioning component 5 also includes a second pusher, which is used to drive the positioning top block 51 to move in the vertical direction. In this embodiment, the second pusher can be any linear drive device. The positioning top block 51 is installed at the output end of the second pusher, so that the positioning top block 51 can be adapted to products 101 of different thicknesses.

[0042] As a further embodiment of the above embodiments, the top of the positioning top block 51 is conical, so that the top of the positioning top block 51 forms a guide and can be better inserted into the positioning hole of the product 101.

[0043] Furthermore, the positioning component 5 also includes multiple pairs of locking blocks. Each pair of locking blocks corresponds to a positioning top block 51. The two locking blocks of the same pair are installed on both sides of the corresponding positioning top block 51. When the product 101 is locked into the positioning top block 51, the locking blocks on both sides will lock the product 101 at that point, reducing the shaking of the product 101.

[0044] The mounting base 1 is provided with a second clamping unit 4. The adsorption base 21 has a mounting hole in the middle. The second clamping unit 4 is located at the mounting hole. The second clamping unit 4 has a second clamping end that can move towards or away from the adsorption base 21. Specifically, the second clamping unit 4 has the same structure as the first clamping unit 3. By setting the second clamping unit 4 in the middle of the product 101, the product 101 can be clamped from the middle, so that the middle position of the product 101 can be better attached to the adsorption base 21 for vacuum adsorption.

[0045] The top of the adsorption base 21 has an adsorption groove 23 with an upward opening. The adsorption groove 23 forms a vacuum adsorption space 22. The mounting base 1 is equipped with a vacuum generating component, which is connected to the inside of the adsorption groove 23. Specifically, the adsorption groove 23 has multiple vacuum suction holes 24. The vacuum generating component includes a vacuum generator 25 and multiple connecting pipes. Each connecting pipe corresponds to one vacuum suction hole 24. Each connecting pipe is connected at one end to the vacuum generator 25 and at the other end to the corresponding vacuum suction hole 24.

[0046] As a further embodiment of the above embodiments, the adsorption seat 21 may be provided with multiple independent adsorption grooves 23. Each adsorption groove 23 is distributed on the upper surface of the adsorption seat 21, and each adsorption groove 23 is provided with a vacuum suction hole 24 and connected to a corresponding connecting pipe. In this way, products 101 of different specifications can be adsorbed through the adsorption grooves 23 that act independently, thereby improving the applicability of the clamping device.

[0047] Furthermore, a sealing groove 26 is provided on the top of the adsorption seat 21 along the circumference of the adsorption groove 23, and a sealing strip is installed in the sealing groove 26. The sealing strip can be made of a flexible material.

[0048] By setting a sealing strip on the outside of the adsorption tank 23, when the product 101 is placed on the adsorption seat 21, the flexible sealing body can better fit the bottom of the product 101, reduce the gap between the product 101 and the adsorption seat 21, improve airtightness and thus enhance the stability of adsorption clamping.

[0049] Furthermore, the top surface of the sealing strip is at a height greater than the top surface of the adsorption seat 21. In this way, when the product 101 is placed on the adsorption seat 21, it first comes into contact with the sealing strip and does not directly contact the adsorption seat 21, reducing the risk of the product 101 being scratched by the hard adsorption seat 21.

[0050] The clamping device also includes a detection unit, which includes a vacuum pressure gauge and a control component. The vacuum pressure gauge is used to detect the vacuum level in the vacuum adsorption space 22. When the vacuum level in the vacuum adsorption space 22 reaches a threshold, the control component controls the first clamping unit 3 to start the first clamping end 321 to move towards the adsorption seat 21, so as to clamp and stabilize the product 101 in a timely manner. In this embodiment, the control component is any electronically controlled device that can control the lifting and lowering of the first pushing part 34.

[0051] As can be seen from the above, after configuring the detection unit, the position of the product 101, the first clamping unit 3, and the vacuum suction force are continuously monitored with the help of the control components, vacuum pressure gauge, and pressure sensor 35. Once an abnormality occurs, the system responds quickly by adjusting the magnitude of the vacuum suction force or activating the first clamping unit 3 to clamp the product, thereby maintaining the stability and accuracy of the processing and improving processing efficiency and quality.

[0052] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A clamping device, characterized in that, include: Mounting base (1); The adsorption unit (2) includes an adsorption seat (21) which is mounted on the mounting base (1) and a vacuum adsorption space (22) is formed on the top of the adsorption seat (21); The first clamping unit (3) includes a clamping seat (31) mounted on the mounting base (1) and a clamping assembly mounted on the clamping seat (31). The clamping seat (31) is located on the side of the adsorption seat (21), and the clamping assembly has a first clamping end (321) that can move closer to or away from the adsorption seat (21).

2. The clamping device according to claim 1, characterized in that, The clamping assembly includes a clamping part (32), a hinge part (33), and a first pushing part (34). One end of the hinge part (33) is rotatably connected to the side of the clamping seat (31) near it, and the other end of the hinge part (33) away from the clamping seat (31) is rotatably connected to the clamping part (32). The first pushing part (34) is capable of moving in the vertical direction on the clamping seat (31). The first pushing part (34) is located on the side of the hinge part (33) away from the adsorption seat (21). The other end of the first pushing part (34) away from the clamping seat (31) is rotatably connected to the other end of the clamping part (32) away from the hinge part (33). The top end of the clamping part (32) near the adsorption seat (21) is the first clamping end (321).

3. The clamping device according to claim 2, characterized in that, The clamping part (32) can be moved until the projection of the first clamping end (321) on the horizontal plane is completely inside the projection of the adsorption seat (21) on the horizontal plane or they do not overlap.

4. A clamping device according to claim 3, characterized in that, A pressure sensor (35) is provided on the clamping seat (31). When the clamping part (32) moves to the point where the projection of the first clamping end (321) on the horizontal plane does not overlap with the projection of the adsorption seat (21) on the horizontal plane, the clamping part (32) abuts against the pressure sensor (35).

5. A clamping device according to claim 1, characterized in that, The adsorption seat (21) is provided with a plurality of the first clamping units (3) along the circumferential direction.

6. A clamping device according to claim 1, characterized in that, The adsorption seat (21) is provided with a positioning component (5), which includes a positioning top block (51). The projection of the positioning top block (51) on the horizontal plane does not overlap with the projection of the adsorption seat (21) on the horizontal plane.

7. A clamping device according to claim 1, characterized in that, The mounting base (1) is provided with a second clamping unit (4), and the adsorption base (21) has an installation hole in the middle. The second clamping unit (4) is located at the installation hole and has a second clamping end that can move toward or away from the adsorption base (21).

8. A clamping device according to claim 1, characterized in that, The top of the adsorption seat (21) is provided with an adsorption groove (23) with the opening facing upward. The adsorption groove (23) forms the vacuum adsorption space (22). The mounting base (1) is provided with a vacuum generating component, which is connected to the inside of the adsorption groove (23).

9. A clamping device according to claim 8, characterized in that, The top of the adsorption seat (21) is provided with a sealing groove (26) along the circumference of the adsorption groove (23), and a sealing strip is installed in the sealing groove (26).

10. A clamping device according to claim 1, characterized in that, It also includes a detection unit, which includes a vacuum pressure gauge and a control component. The vacuum pressure gauge is used to detect the vacuum level in the vacuum adsorption space (22). When the vacuum level in the vacuum adsorption space (22) reaches a threshold, the control component controls the first clamping unit (3) to start the first clamping end (321) to move toward the adsorption seat (21).

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