Vacuum chuck and suction device

Abstract

The application relates to the field of pneumatic technology and discloses a vacuum chuck and a suction device, the vacuum chuck comprising a chuck main body and a suction assembly, the chuck main body having opposite suction surfaces and non-suction surfaces, the suction surfaces being divided into a plurality of suction areas which are concentrically distributed and have different suction forces, each suction area being provided with a suction hole which penetrates the chuck main body in the axial direction, the suction holes in different suction areas having different hole diameters; the suction assembly comprising a vacuum pump and a plurality of suction nozzles arranged on the non-suction surfaces, one end of each suction nozzle being connected with a hole opening of the suction hole which penetrates the non-suction surface, the other end of each suction nozzle being connected with the vacuum pump through a vacuum pipeline, and each vacuum pipeline being provided with a control valve which controls the conduction or closing of the corresponding vacuum pipeline. The vacuum chuck can dynamically adjust the distribution of the suction force according to the deformation characteristics of the soft material, ensure that the soft material closely adheres to the suction surface of the chuck main body, prevent the appearance of gaps in local areas and affect the vacuum suction force, and further cause poor suction effect.

Description

Technical Field

[0001] This utility model relates to the technical field, and in particular to a vacuum suction cup and adsorption device. Background Technology

[0002] Currently, vacuum suction cups, as important pneumatic components for picking up parts, are widely used in automated equipment. In these devices, vacuum suction cups act as the finger-like ends of robotic arms, capable of picking up sheet-like and lightweight materials such as films, paper, and glass. However, when existing vacuum suction cups pick up soft materials such as films and paper, the large deformation of these soft packaging materials can easily lead to gaps appearing at the adhesion point between the vacuum suction cup and these soft packaging materials. This affects the vacuum adhesion force, resulting in adhesion failure and poor adhesion effect. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this application provides a vacuum suction cup.

[0004] In a first aspect, this application provides a vacuum suction cup, comprising: The suction cup body has opposing adsorption and non-adsorption surfaces. The adsorption surfaces are divided into multiple concentrically distributed adsorption regions with different suction forces. Each adsorption region is provided with an adsorption hole that penetrates the suction cup body along the axial direction. The diameter of the adsorption hole located in different adsorption regions is different. The adsorption assembly includes a vacuum pump and a plurality of suction nozzles disposed on the non-adsorption surface. One end of each suction nozzle is connected to the opening of the adsorption hole that penetrates the non-adsorption surface, and the other end is connected to the vacuum pump through a vacuum pipe. The vacuum pipe is provided with a control valve that controls the opening or closing of the corresponding vacuum pipe.

[0005] In one possible implementation, there are n adsorption regions, one of which is located in the middle of the suction cup body, and the remaining adsorption regions are distributed around the middle of the suction cup body; wherein, n≥2.

[0006] In one possible implementation, the adsorption area is provided with three regions: a first adsorption area, a second adsorption area, and a third adsorption area. The first adsorption area is located in the middle of the suction cup body, the second adsorption area is located around the first adsorption area, and the third adsorption area is located around the second adsorption area.

[0007] In one possible implementation, the pore sizes of the adsorption pores in the first adsorption region, the second adsorption region, and the third adsorption region satisfy the following relationship: ;in, The pore size is the pore diameter of the adsorption pore located in the first adsorption region. The pore size is the pore diameter of the adsorption pore located in the second adsorption region. The pore size is the pore diameter of the adsorption pore located in the third adsorption region.

[0008] In one possible implementation, the pore spacing and pore diameter of the adsorption pores located in the same adsorption region satisfy the following relationship: Where R is the pore diameter of the adsorption pores located in the same adsorption region, and L is the distance between the centers of the adsorption pores located in the same adsorption region.

[0009] In one possible implementation, the suction nozzle includes a suction nozzle body and an adapter. One end of the suction nozzle body is inserted into the opening of the suction hole that penetrates the non-adsorption surface. The adapter is connected to the end of the suction nozzle body away from the suction cup body and is used to connect to the vacuum pipe.

[0010] In one possible implementation, the nozzle body has a limiting ring distributed along its circumference, the diameter of the limiting ring being larger than the diameter of the adsorption hole, and after one end of the nozzle body is inserted into the adsorption hole, the limiting ring abuts against the non-adsorption surface.

[0011] In one possible implementation, a sensor is also included, which is located on the outside of the nozzle body and connected to the nozzle body.

[0012] In one possible implementation, a one-way valve is also included, which is disposed within the nozzle.

[0013] Secondly, this application also provides an adsorption device, including the vacuum suction cup described above.

[0014] The technical solutions provided in this application have the following advantages compared with the prior art: By dividing the adsorption surface of the suction cup body into multiple concentric adsorption areas, and setting adsorption holes that penetrate the suction cup body and are independent of each other in each adsorption area, a suction nozzle is connected to the opening of each adsorption hole in the non-adsorption area. The suction nozzle is connected to a vacuum pump through a vacuum pipe. Since a control valve is set on the vacuum pipe, the distribution of suction force can be dynamically adjusted according to the deformation characteristics of the soft material, ensuring that the soft material is tightly attached to the adsorption surface of the suction cup body, preventing gaps from appearing in some areas that would affect the vacuum adsorption force and thus lead to poor adsorption effect. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] In the attached image: Figure 1 This is a bottom view of a vacuum suction cup according to this application; Figure 2 This is a top view schematic diagram of a vacuum suction cup according to this application.

[0018] Icon labels: 10. Suction cup body; 11. Adsorption surface; 11a. First adsorption area; 11b. Second adsorption area; 11c. Third adsorption area; 12. Non-adsorption surface; 20. First adsorption hole; 30. Second adsorption hole; 40. Third adsorption hole; 50. Suction nozzle; 51. Suction nozzle body; 52. Adapter; 53. Limiting ring; 60. Sensor. Detailed Implementation

[0019] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0020] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0021] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0022] Please refer to Figure 1 and Figure 2 This application provides a vacuum suction cup, which includes a suction cup body 10 and an adsorption assembly. The suction cup body 10 has opposing adsorption surfaces 11 and non-adsorption surfaces 12. The adsorption surfaces 11 are divided into multiple concentrically distributed adsorption regions with different suction forces. Each adsorption region has an adsorption hole that penetrates the suction cup body 10 along the axial direction. The diameter of the adsorption holes in different adsorption regions is different. The adsorption assembly includes a vacuum pump and multiple suction nozzles 50 disposed on the non-adsorption surfaces 12. One end of each suction nozzle 50 is connected to the opening of the adsorption hole penetrating the non-adsorption surface 12, and the other end is connected to the vacuum pump through a vacuum pipe. The vacuum pipe is provided with a control valve that controls the opening or closing of the corresponding vacuum pipe.

[0023] In this embodiment, the vacuum suction cup divides the adsorption surface 11 of the suction cup body 10 into multiple concentric adsorption areas. Each adsorption area has an adsorption hole that penetrates the suction cup body 10 and is independent of each other. Then, a suction nozzle 50 is connected to the opening of each adsorption hole in the non-adsorption area. The suction nozzle 50 is connected to a vacuum pump through a vacuum pipe. Since a control valve is provided on the vacuum pipe, the distribution of suction force can be dynamically adjusted according to the deformation characteristics of the soft material. This ensures that the soft material is tightly attached to the adsorption surface 11 of the suction cup body 10, preventing gaps from appearing in some areas that would affect the vacuum adsorption force and thus lead to poor adsorption effect.

[0024] It should be noted that the term "soft material" in this application refers to the degree to which the adsorbed object deforms under its own weight even in a free state. Examples include films and paper used in packaging bags, which deform under their own weight even in a free state. Furthermore, it should be pointed out that while the vacuum suction cup of this application can be used to adsorb flexible materials, it is not exclusively for flexible materials; it is also applicable to common rigid materials such as glass.

[0025] For example, the suction cup's adsorption surface 11 is divided into multiple adsorption regions, and adsorption holes of different diameters are provided in different adsorption regions. Each adsorption hole is connected to a vacuum pump through a corresponding vacuum pipe, so that the suction force of the corresponding adsorption region can be independently controlled. For example, when adsorbing flexible materials, the adsorption region with a larger pore diameter can provide a stronger initial adsorption force to prevent the flexible material from slipping; the adsorption region with a smaller pore diameter on the periphery can maintain stable adsorption with a smaller adsorption force, avoiding the problem of material deformation caused by excessive local suction force.

[0026] In one possible implementation, there are n adsorption regions, one of which is located in the middle of the suction cup body, and the remaining adsorption regions are distributed around the middle of the suction cup body; wherein, n≥2.

[0027] Specifically, there are three adsorption regions: a first adsorption region 11a, a second adsorption region 11b, and a third adsorption region 11c. The first adsorption region 11a is located in the middle of the suction cup body 10, the second adsorption region 11b is located around the first adsorption region 11a, and the third adsorption region 11c is located around the second adsorption region 11b. In other words, the adsorption surface 11 of the suction cup body 10 is divided into a first adsorption region 11a, a second adsorption region 11b, and a third adsorption region 11c. The first adsorption region 11a is located in the middle of the suction cup body 10, the second adsorption region 11b is located on the periphery of the first adsorption region 11a, and the third adsorption region 11c is located on the periphery of the second adsorption region 11b. The adsorption force of the second adsorption region 11b is stronger than that of the third adsorption region 11c and weaker than that of the first adsorption region 11a. This allows the first adsorption region 11a to provide a stronger adsorption force to hold the middle of the flexible material firmly in place, preventing slippage. The second adsorption region 11b and the third adsorption region 11c provide a smaller adsorption force to adsorb the flexible material, thereby effectively avoiding the problem of material deformation caused by excessive local suction and achieving a better adsorption effect.

[0028] In one possible implementation, the pore sizes of the adsorption pores in the first adsorption region 11a, the second adsorption region 11b, and the third adsorption region 11c satisfy the following relationship: in, The pore size is the pore diameter of the adsorption pore located in the first adsorption region 11a. The pore size is the pore diameter of the adsorption pore located in the second adsorption region 11b. The pore size is the pore diameter of the adsorption pore located in the third adsorption region 11c.

[0029] For example, for ease of description, the adsorption hole located in the first adsorption region 11a is defined as the first adsorption hole 20, the second adsorption hole 30 located in the second adsorption region 11b is defined as the second adsorption hole 30, and the third adsorption hole 40 located in the third adsorption region 11c is defined as the third adsorption hole 40. That is, when adsorption force is provided to the first adsorption hole 20, the second adsorption hole 30, and the third adsorption hole 40 through the vacuum channel, the first adsorption hole 20 has a stronger adsorption force due to its largest pore size, and the third adsorption hole 40 has a weakest adsorption force due to its smallest pore size. In this way, different intensities of adsorption force can be provided according to the deformation characteristics of the flexible material. Compared with traditional vacuum suction cups that do not divide the adsorption force into regions, the vacuum suction cup of this embodiment can provide a better adsorption effect and effectively avoid material deformation due to excessive local suction force.

[0030] In one possible implementation, the pore spacing and pore diameter of the adsorption pores located in the same adsorption region satisfy the following relationship: Where R is the pore diameter of the adsorption pores located in the same adsorption region, and L is the distance between the centers of the adsorption pores located in the same adsorption region. In other words, setting the pore spacing to between 2 and 5 times the pore diameter is to ensure better adsorption performance. For example, if the pore spacing is less than 2 times the pore diameter, the adsorption force areas of adjacent adsorption areas will overlap, resulting in excessive local adsorption force, which may cause excessive stretching or even tearing of the flexible material; if the pore spacing is greater than 5 times the pore diameter, the adsorption coverage will be discontinuous, causing wrinkles to appear in the areas of the flexible material that are not adsorbed due to gravity or inertia. The pore diameter of the adsorption pores is between 0.1 mm and 1 mm.

[0031] In one possible implementation, the suction nozzle 50 is equipped with a one-way valve. This ensures that in the event of an accidental leak in the vacuum pump or vacuum pipeline, the one-way valve can automatically lock the current vacuum state, preventing the adsorbed flexible material from falling off due to pressure loss.

[0032] In one possible implementation, the suction nozzle 50 includes a suction nozzle body 51 and an adapter 52. One end of the suction nozzle body 51 is inserted into the opening of the suction hole penetrating the non-adsorption surface 12. The adapter 52 is connected to the end of the suction nozzle body 51 away from the suction cup body 10, and the adapter 52 is used to connect to a vacuum pipeline. In this way, the adapter 52 connected to the suction nozzle body 51 can be quickly connected to the vacuum pipeline, facilitating the rapid replacement of the suction nozzle 50.

[0033] In one possible implementation, a limiting ring 53 is distributed circumferentially on the nozzle body 51. The diameter of the limiting ring 53 is larger than the diameter of the adsorption hole, and after one end of the nozzle body 51 is inserted into the adsorption hole, the limiting ring 53 abuts against the non-adsorption surface 12. That is, after the nozzle body 51 is inserted into the adsorption hole, the limiting ring 53 plays a limiting role to ensure a firm connection between the nozzle body 51 and the suction cup body 10, preventing the nozzle 50 from becoming loose during use and causing air leakage.

[0034] In one possible implementation, a sensor 60 is also included. The sensor 60 is located on the outside of the suction nozzle body 51 and is connected to the suction nozzle body 51. In this way, the sensor 60 can be used to monitor the vacuum level and adsorption status of the suction cup in real time, thereby ensuring that adsorption problems occurring during the adsorption process can be detected in a timely manner.

[0035] This application also provides an adsorption device, including the vacuum suction cup of the above embodiments.

[0036] The adsorption device according to the embodiments of this disclosure uses the above-described vacuum suction cup, and its technical effects are the same as those of the above-described vacuum suction cup, so they will not be repeated here.

[0037] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A vacuum suction cup, characterized in that, include: The suction cup body has opposing adsorption and non-adsorption surfaces. The adsorption surfaces are divided into multiple concentrically distributed adsorption regions with different suction forces. Each adsorption region is provided with an adsorption hole that penetrates the suction cup body along the axial direction. The diameter of the adsorption hole located in different adsorption regions is different. The adsorption assembly includes a vacuum pump and a plurality of suction nozzles disposed on the non-adsorption surface. One end of each suction nozzle is connected to the opening of the adsorption hole that penetrates the non-adsorption surface, and the other end is connected to the vacuum pump through a vacuum pipe. The vacuum pipe is provided with a control valve that controls the opening or closing of the corresponding vacuum pipe.

2. The vacuum suction cup according to claim 1, characterized in that, The adsorption area is provided with n, one of which is located in the middle of the suction cup body, and the remaining adsorption areas are distributed on the periphery of the middle of the suction cup body; wherein, n≥2.

3. The vacuum suction cup according to claim 2, characterized in that, The adsorption area is provided with three regions: a first adsorption area, a second adsorption area, and a third adsorption area. The first adsorption area is located in the middle of the suction cup body, the second adsorption area is located on the periphery of the first adsorption area, and the third adsorption area is located on the periphery of the second adsorption area.

4. The vacuum suction cup according to claim 3, characterized in that, The pore sizes of the adsorption pores in the first adsorption region, the second adsorption region, and the third adsorption region satisfy the following relationship: ;in, The pore size is the pore diameter of the adsorption pore located in the first adsorption region. The pore size is the pore diameter of the adsorption pore located in the second adsorption region. The pore size is the pore diameter of the adsorption pore located in the third adsorption region.

5. The vacuum suction cup according to claim 1, characterized in that, The pore spacing and pore diameter of the adsorption pores located in the same adsorption region satisfy the following relationship: Where R is the pore diameter of the adsorption pores located in the same adsorption region, and L is the distance between the centers of the adsorption pores located in the same adsorption region.

6. The vacuum suction cup according to claim 1, characterized in that, The suction nozzle includes a suction nozzle body and an adapter. One end of the suction nozzle body is inserted into the opening of the suction hole that penetrates the non-adsorption surface. The adapter is connected to the end of the suction nozzle body away from the suction cup body and is used to connect to the vacuum pipe.

7. The vacuum suction cup according to claim 6, characterized in that, The nozzle body has a limiting ring distributed along its circumference. The diameter of the limiting ring is larger than the diameter of the adsorption hole. After one end of the nozzle body is inserted into the adsorption hole, the limiting ring abuts against the non-adsorption surface.

8. The vacuum suction cup according to claim 7, characterized in that, It also includes a sensor, which is located on the outside of the nozzle body and connected to the nozzle body.

9. The vacuum suction cup according to claim 1, characterized in that, It also includes a one-way valve, which is located inside the suction nozzle.

10. An adsorption device, characterized in that, Includes the vacuum chuck as described in any one of claims 1 to 9.

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