Vacuum chuck with stable adsorption function

Abstract

The utility model relates to a vacuum chuck capable of absorbing stably in the field of chucks, which comprises a shell, a suction nozzle is arranged on the shell, a sealing ring is sleeved on the outer side of the suction nozzle, a support shaft matched with the sealing ring is arranged on the shell, and height differences are sequentially arranged among the sealing ring, the support shaft and the vertex of the suction nozzle. Through the height difference between the sealing ring and the supporting shaft, after a workpiece is placed on the suction cup, the top of the sealing ring is extruded to deform downwards and is flush with the top of the supporting shaft. Therefore, the sealing ring is tightly attached to the bottom of the workpiece while the precision is not affected. And moreover, the suction nozzle firmly adsorbs the sealing ring through negative pressure by utilizing the height difference between the suction nozzle and the supporting shaft, so that a sealing effect is formed. And the stability and the safety of the workpiece in the machining process are ensured while the sealing ring is prevented from loosening.

Description

Technical Field

[0001] The utility model relates to the field of suction cups, in particular to a vacuum suction cup with stable adsorption. Background Art

[0002] As a widely used tool in the field of mechanical processing, the value of suction cups lies in their ability to achieve precise positioning and fixation of workpieces in a variety of situations. Suction cups are particularly advantageous in processing processes that require strict high precision and high stability. Their carefully designed structure allows the suction cups to adapt to parts and surfaces of different shapes, ensuring that the workpiece is not damaged during the suction process. In addition, the suction cups' rapid suction and release functions greatly improve production efficiency and shorten processing cycles. In automated production lines, the use of this new type of suction cup not only reduces the error rate of manual operations, but also reduces labor intensity, providing strong support for the realization of intelligent manufacturing.

[0003] Existing suction cups typically rely on squeezing a sealing ring between the workpiece and the cup to achieve their sealing function. However, because the sealing ring has a certain degree of elasticity after being squeezed, it will rebound upward after the pressure is released. This can cause the workpiece to tilt or shift during the suction process, affecting the workpiece's position and angle, and thus the machining accuracy. Therefore, the present utility model provides a vacuum suction cup that ensures stable suction. Summary of the Invention

[0004] The utility model provides a vacuum suction cup with stable adsorption, which solves the problem of a workpiece tilting or deflecting caused by rebound of a sealing ring in an existing suction cup by improving the suction cup structure.

[0005] The purpose of this utility model is achieved by the following methods:

[0006] A vacuum suction cup with stable adsorption includes a shell, a suction nozzle is provided on the shell, a sealing ring is provided on the outer side of the suction nozzle, a support shaft is provided on the shell to cooperate with the sealing ring, and height differences are provided among the vertices of the sealing ring, the support shaft and the suction nozzle in sequence.

[0007] Furthermore, a limiting groove cooperating with the sealing ring is provided on the outer side of the suction nozzle.

[0008] Furthermore, the limiting groove is arc-shaped.

[0009] Furthermore, the height difference ranges from 0.05 mm to 0.10 mm.

[0010] Furthermore, the height difference is 0.05 mm.

[0011] Furthermore, the shell is composed of an upper cover and a base, a sealing groove is provided in the base, and the base and the suction nozzle are respectively provided with through holes connected to the sealing groove.

[0012] Furthermore, positioning pins are provided on both sides of the shell, and guide structures are provided on the outer sides of the positioning pins.

[0013] The beneficial effects of this utility model are as follows: By leveraging the height difference between the sealing ring and the support shaft, the top of the sealing ring is squeezed and deformed downward, becoming flush with the top of the support shaft after the workpiece is placed on the suction cup. This allows the sealing ring to maintain a tight fit against the bottom of the workpiece without compromising accuracy. Furthermore, the suction nozzle utilizes the height difference with the support shaft to securely hold the sealing ring in place through negative pressure, creating a seal. This prevents the sealing ring from loosening while ensuring the stability and safety of the workpiece during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of a vacuum suction cup for stable adsorption according to the present invention;

[0015] Figure 2 This is a cross-sectional view of a vacuum suction cup with stable adsorption according to the present invention;

[0016] Figure 3 for Figure 2 A is an enlarged schematic diagram;

[0017] Figure 4 This is a schematic structural diagram of the upper cover in the utility model;

[0018] Figure 5 This is a schematic structural diagram of the base in the present utility model;

[0019] Figure 6 This is a schematic structural diagram of the positioning pin in the present utility model;

[0020] The reference numerals in the figure are: 1-shell, 1A-upper cover, 1B-base, 1C-sealing groove, 1D-through hole, 2-sucking nozzle, 2A-limiting groove, 3-sealing ring, 4-support shaft, 5-locating pin, 5A-guide structure. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementations.

[0022] In this embodiment, refer to Figures 1-6The invention specifically implements a vacuum suction cup with stable adsorption, comprising a housing 1, a suction nozzle 2 provided on the housing 1, a sealing ring 3 sleeved on the outside of the suction nozzle 2, and a support shaft 4 provided on the housing 1 for cooperating with the sealing ring 3. The sealing ring 3, the support shaft 4, and the apex of the suction nozzle 2 are sequentially provided with height differences. When a workpiece is placed on the suction cup, due to the height difference between the sealing ring 3 and the support shaft 4, the sealing ring 3 is slightly deformed by the weight and pressure of the workpiece. Subsequently, as the bottom of the workpiece contacts the support shaft 4, the support effect of the support shaft 4 stops the deformation of the sealing ring 3. This allows the sealing ring 3 to maintain a tight fit with the bottom of the workpiece without affecting accuracy. Furthermore, the suction nozzle 2 utilizes the height difference between the support shaft 4 and the suction nozzle 2 to firmly suck the sealing ring 3 together through negative pressure, making the contact between the sealing ring 3 and the bottom of the workpiece more stable. This design not only improves the suction cup's adsorption efficiency, but also enhances its adaptability to different workpiece surfaces. This ensures the stability and safety of the workpiece during processing.

[0023] In addition, a limiting groove 2A is provided on the outside of the suction nozzle 2 to cooperate with the sealing ring 3. The limiting groove 2A allows the sealing ring 3 to remain in a fixed position under normal conditions, preventing the sealing ring 3 from accidentally moving or falling off. When the suction cup is working, the limiting groove 2A can also guide the deformation of the sealing ring 3 to prevent the sealing ring 3 from sliding downward after being squeezed, affecting the sealing effect. In this embodiment, the limiting groove 2A is arc-shaped. The sealing ring 3 also adopts a cylindrical sealing ring 3 corresponding to the limiting groove 2A. Through the cooperation of the arc-shaped limiting groove 2A and the cylindrical sealing ring 3, it is ensured that the sealing ring 3 can deform evenly when subjected to the pressure of the workpiece, thereby maintaining good contact with the bottom of the workpiece. This design not only improves the sealing performance of the suction cup, but also extends the service life of the suction cup.

[0024] The height difference between the sealing ring 3, the support shaft 4 and the suction nozzle 2 ranges from 0.05mm to 0.10mm. This precise height difference design enables the suction cup to generate sufficient negative pressure when working. At the same time, excessive deformation of the sealing ring 3 is avoided, ensuring the stability and reliability of the sealing effect. When the height difference is greater than 0.10mm, the sealing ring 3 may rebound upward due to excessive deformation, resulting in a slight deviation in the position and angle of the workpiece. When the height difference is less than 0.05mm, the negative pressure generated by the suction cup is not enough to firmly adsorb the workpiece, especially when the surface of the workpiece is uneven or has tiny protrusions, the workpiece may slip. In this embodiment, the height difference is 0.05mm. The height difference of 0.05mm ensures the adsorption stability and sealing effect of the suction cup while avoiding the generation of higher negative pressure, which causes unnecessary pressure on the workpiece, thereby causing deformation or bending of the workpiece.

[0025] The housing 1 consists of an upper cover 1A and a base 1B. A sealing groove 1C is provided in the base 1B, and both the base 1B and the suction nozzle 2 are provided with a through-hole 1D connected to the sealing groove 1C. The split design makes the manufacture of the housing 1 more convenient and quick. At the same time, this design also facilitates subsequent maintenance and replacement of parts. The upper cover 1A and the base 1B are connected by threads, and a sealing strip is provided on the outer ring of the sealing groove 1C to ensure the sealing performance of the housing 1. The through-hole 1D on the base 1B is connected to a negative pressure vacuum pump, etc., and the negative pressure is quickly transmitted to the workpiece surface through the through-hole 1D on the suction nozzle 2, achieving efficient and stable adsorption.

[0026] In addition, positioning pins 5 are provided on both sides of the shell 1, and the positioning pins 5 are fixed to the shell 1 by threaded connections. A guide structure 5A is provided on the outside of the positioning pin 5. The workpiece can be quickly positioned and fixed at the specified position through the guide structure 5A on the positioning pin 5. This allows the tray to meet the production requirements of batch processing and other processes. The guide structure 5A can be designed in a variety of shapes and sizes to accommodate workpieces of different sizes and shapes. The precise design of the guide structure 5A ensures the position accuracy of the workpiece during the processing and reduces the processing errors caused by inaccurate positioning. In addition, the material selection and surface treatment process of the guide structure 5A have also been carefully designed to ensure good wear resistance and stability during long-term use.

[0027] The beneficial effects of this utility model are as follows: Due to the height difference between the sealing ring 3 and the support shaft 4, after the workpiece is placed on the suction cup, the top of the sealing ring 3 is squeezed and deformed downward, becoming flush with the top of the support shaft 4. This ensures that the sealing ring 3 maintains a tight fit with the bottom of the workpiece without affecting accuracy. Furthermore, the suction nozzle 2 utilizes the height difference with the support shaft 4 to firmly absorb the sealing ring 3 through negative pressure, creating a sealing effect. This prevents the sealing ring 3 from loosening while ensuring the stability and safety of the workpiece during processing.

[0028] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention is disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the above-disclosed technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technology of the present invention, which do not depart from the content of the technical solution of the present invention, are within the scope of the technical solution of the present invention.

Claims

1. A vacuum suction cup with stable adsorption, characterized in that: The invention comprises a shell (1), a suction nozzle (2) is provided on the shell (1), a sealing ring (3) is sleeved on the outer side of the suction nozzle (2), a support shaft (4) is provided on the shell (1) and cooperates with the sealing ring (3), and height differences are sequentially provided between the vertices of the sealing ring (3), the support shaft (4) and the suction nozzle (2).

2. A vacuum suction cup with stable adsorption according to claim 1, characterized in that: The outer side of the suction nozzle (2) is provided with a limiting groove (2A) that cooperates with the sealing ring (3).

3. The vacuum suction cup with stable adsorption according to claim 2, characterized in that: The limiting groove (2A) is in an arc shape.

4. A vacuum suction cup with stable adsorption according to any one of claims 1 to 3, characterized in that: The height difference ranges from 0.05 mm to 0.10 mm.

5. A vacuum suction cup with stable adsorption according to any one of claims 1 to 3, characterized in that: The height difference is 0.05 mm.

6. The vacuum suction cup with stable adsorption according to claim 1, characterized in that: The housing (1) is composed of an upper cover (1A) and a base (1B); a sealing groove (1C) is provided in the base (1B); and the base (1B) and the suction nozzle (2) are respectively provided with a through hole (1D) connected to the sealing groove (1C).

7. The vacuum suction cup with stable adsorption according to claim 1, characterized in that: Positioning pins (5) are provided on both sides of the housing (1), and guide structures (5A) are provided on the outer sides of the positioning pins (5).

Images