Vacuum chuck and automobile metal plate suction device

Abstract

The utility model provides a vacuum chuck and an automobile sheet metal suction device, the vacuum chuck comprises an outer chuck and an inner airflow assembly located in the outer chuck, one of the outer chuck and the inner airflow assembly is used for being connected with a negative pressure device, and the other one of the outer chuck and the inner airflow assembly is used for being communicated with an air supply device. The inner airflow assembly is arranged in the outer suction cup, and the channels are formed in the outer suction cup and the inner airflow assembly correspondingly, so that before the suction cup makes contact with the surface of an adsorbate, air is blown to the surface of the adsorbate through the air supply device, and therefore the part, making contact with the adsorbate, of the suction cup does not have dust or other impurities as much as possible; and the contact between the suction cup and the adsorbate is firmer.

Description

Technical Field

[0001] The utility model belongs to the technical field of machining tooling, and particularly relates to a vacuum chuck and an automobile sheet metal suction device. Background Art

[0002] With the rapid development of industrial automation, vacuum chucks, as important tooling fixtures, are widely used in various automated production lines. The structure of most vacuum chucks is a hollow cone, and the chuck wall surface facing the adsorbed object is a cone with a concave middle part. When in use, after the chuck is pressed against the adsorbed object surface, the middle part of the chuck is pressed towards the adsorbed object surface, so that the air in the conical cavity of the chuck is extruded. Then, the chuck is released, and a negative pressure is generated in the conical cavity of the chuck during the self-resetting process of the chuck, enabling the chuck to adsorb on the surface of the article, or the air in the chuck cavity is extracted after the chuck is pressed against the adsorbed object surface to form a negative pressure in the chuck cavity.

[0003] During the actual use process, since there may be dust or other impurities on the adsorbed object surface, after the chuck contacts the adsorbed object surface, there is a gap between the chuck and the adsorbed object, thereby reducing the suction force, and making it possible for the chuck to separate from the adsorbed object surface during use. Summary of the Utility Model

[0004] In view of the above-mentioned disadvantages of the prior art, the purpose of the present utility model is to provide a vacuum chuck and an automobile sheet metal suction device, which are used to solve the problems such as unstable suction of the chuck caused by the possible adhesion of dust and other impurities on the adsorbed object surface in the prior art.

[0005] To achieve the above purpose and other related purposes, on the one hand, the present utility model provides a vacuum chuck, which includes an outer chuck and an inner air flow component located inside the outer chuck. One of the outer chuck and the inner air flow component is used to connect with a negative pressure device, and the other is used to communicate with a gas supply device.

[0006] Further, the inner air flow component is an inner chuck located inside the outer chuck and separated from the outer chuck. The opening direction of the outer chuck is the same as that of the inner chuck. The inner chuck is communicated with a first channel, and the outer chuck is communicated with a second channel. Among them, the first channel is used to communicate with the gas supply device, and the second channel is used to communicate with the negative pressure device, or the first channel is used to communicate with the negative pressure device, and the second channel is used to communicate with the gas supply device.

[0007] Further, in the opening direction of the outer chuck, the inner air flow component does not protrude beyond the opening edge of the outer chuck.

[0008] Further, it further includes an angle adjustment mechanism. The inner suction cup and the outer suction cup are both connected to the angle adjustment mechanism, and the angle adjustment mechanism is used to adjust the opening direction of the vacuum suction cup.

[0009] Further, the angle adjustment mechanism includes an adjustment pipe and a universal ball connected to the port of the adjustment pipe. The outer suction cup is sleeved on the universal ball and is in clearance fit with the universal ball.

[0010] Further, an adjustment hole is provided on the universal ball; an air valve is provided in the adjustment pipe, and the air valve is used to control the connection or disconnection between the first channel and the adjustment pipe.

[0011] Further, a connection block is provided between the inner suction cup and the outer suction cup, and the inner suction cup and the outer suction cup are fixedly connected through the connection block.

[0012] Further, a plurality of air vent holes are provided on the connection block.

[0013] Further, a cover plate is provided on the top of the outer suction cup, a sealing gasket is provided between the cover plate and the outer suction cup, and a support seat is provided in the outer suction cup, and the support seat is used to support the universal ball.

[0014] On the other hand, the present application also provides an automobile sheet metal suction device, which includes the above-mentioned vacuum suction cup, and also includes a gas supply device and a negative pressure device.

[0015] As described above, the present utility model has the following beneficial effects: By providing an inner air flow component in the outer suction cup and providing channels in the outer suction cup and the inner air flow component respectively, before the suction cup contacts the surface of the adsorbed object, the surface of the adsorbed object is first blown by the gas supply device, so that there are as few dust and other impurities as possible in the part where the suction cup contacts the adsorbed object, making the contact between the suction cup and the adsorbed object firmer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the vacuum suction cup provided by the embodiment of the present utility model;

[0017] Figure 2 is Figure 1 the front view of;

[0018] Figure 3 is Figure 2 the sectional view along A-A Figure 1 ;

[0019] Figure 4 is Figure 2 the sectional view along A-A Figure 2 .

[0020] Description of Part Numbers

[0021] 1 - Outer suction cup, 11 - Second channel, 12 - Connecting hole, 13 - Support base, 2 - Inner suction cup, 21 - First channel, 22 - Connecting block, 23 - Ventilation through hole, 3 - Angle adjustment mechanism, 31 - Universal ball, 32 - Adjusting tube, 33 - Third channel, 34 - Adjusting hole, 4 - Cover plate, 5 - Sealing gasket, 6 - Air valve. Detailed implementation mode

[0022] The following specific embodiments illustrate the implementation mode of the present invention. Those skilled in this technology can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0023] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical essential significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration and are not used to limit the scope for the implementation of the present invention. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope for the implementation of the present invention.

[0024] In order to be able to describe the present invention in detail, first, the vacuum suction cup of the present invention will be specifically described below.

[0025] As Figure 1 shown, the present application provides a vacuum suction cup, including an outer suction cup 1 and an inner air flow component located inside the outer suction cup 1. One of the outer suction cup 1 and the inner air flow component is connected to a negative pressure device, and the other is communicated with a gas supply device.

[0026] The inner air flow component is an inner suction cup 2 located inside the outer suction cup 1. The inner suction cup 2 is equivalent to being sleeved inside the outer suction cup 1 and is separated between the outer suction cup 1 and the inner suction cup 2. Both the inner suction cup 2 and the outer suction cup 1 are conical, and the side close to the surface of the adsorbed object is trumpet-shaped.

[0027] The inner suction cup 2 is communicated with the first channel 21. In this embodiment, the first channel 21 is directly opened inside the inner suction cup 2. It is also possible to set a hole inside the inner suction cup 2 and connect a pipe inside the hole. A second channel 11 is formed between the outer suction cup 1 and the inner suction cup 2. In the present application, by providing a connecting hole 12 on the outer suction cup 1, the top of the outer suction cup 1 is hermetically connected to the outer wall of the inner suction cup 2.

[0028] The first channel 21 and the second channel 11 are connected. When the vacuum suction cup initially contacts the surface of the adsorbed object, the first channel 21 can be used to communicate with the air supply device, and the second channel 11 can be used to communicate with the negative pressure device. Or, the first channel 21 can be used to communicate with the negative pressure device, and the second channel 11 can be used to communicate with the air supply device.

[0029] Wherein, in the opening direction of the outer suction cup 1, the opening edge of the inner suction cup 2 is lower than the opening edge of the outer suction cup 1, that is, regardless of whether the openings of the outer suction cup 1 and the inner suction cup 2 face upward or downward, the edge of the inner suction cup 2 does not protrude beyond the opening edge of the outer suction cup 1. That is equivalent to the center depression depth of the inner suction cup 2 of the present application being less than the center depression depth of the outer suction cup 1, that is, when the suction cup contacts the surface of the adsorbed object, the outer suction cup 1 first contacts the surface of the adsorbed object, and at this time, the inner suction cup 2 has not yet contacted the surface of the adsorbed object. Thus, the first channel 21 and the second channel 11 are connected from the bottom, and the other parts are not connected.

[0030] The center depression depth of the inner suction cup 2 being less than the center depression depth of the outer suction cup 1 can not only enable the first channel 21 and the second channel 11 to be connected at the bottom, but also limit the adsorbed object.

[0031] When sucking relatively thin adsorbed objects, such as the outer skin of a car door, if there is no inner suction cup 2 and only one suction cup, the middle part of the adsorbed object in contact with the suction cup may bulge due to the action of negative pressure suction from a sunken state, resulting in deformation of the part, and thus additional quality defects in the part.

[0032] In the present application, by designing the inner suction cup 2, the adsorbed object in the middle part can be positioned. When it is reset to a certain extent under the action of negative pressure suction and contacts the inner suction cup 2, the inner suction cup 2 can position it. Although the inner suction cup 2 also needs to contact and deform with the surface of the adsorbed object, since its depression depth is less than that of the outer suction cup 1, the deformation adsorption distance of the inner suction cup 2 is less than that of the outer suction cup 1, so it can play a certain limiting role.

[0033] As long as one of the two channels blows air and the other channel performs negative pressure pumping, but for better effect, in the present application, the first channel 21 is used to communicate with the air supply device, blows air through the first channel 21, and the second channel 11 is used to communicate with the negative pressure device, performs negative pressure suction through the second channel 11. The inner suction cup 2 and the outer suction cup 1 are concentrically arranged. The blown air directly blows vertically to the surface of the adsorbed object from the first channel 21, and the air entering from the center of the inner suction cup 2 diffuses outward through the inner suction cup 2 and the outer suction cup 1, driving dust and other impurities to also spread from the center to the outside.

[0034] If the blown gas enters from the second channel 11 and enters from the side, the gas is dispersed by the inner suction cup 2 after entering, with part of it going vertically downward and part going downward along the outer wall of the inner suction cup 2 or the inner wall of the outer suction cup 1.

[0035] The outer wall of the inner suction cup 2 is conical, so the flow direction of the gas is relatively disordered. When the gas blows onto the surface of the adsorbent, dust and other impurities will not spread orderly from the center to the outside. The effect of blowing to remove impurities on the surface of the adsorbent is not as good as that when the gas is blown out from the first channel 21.

[0036] Specifically, the surface of the adsorbent may be multi - shaped, and the angle of the suction cup needs to be adjusted. Therefore, an angle adjustment mechanism 3 is added to the vacuum suction cup in this application. Both the inner suction cup 2 and the outer suction cup 1 are connected to the angle adjustment mechanism 3, so that the angles of the inner suction cup 2 and the outer suction cup 1 relative to the adsorbent can be adjusted to adapt to workpieces with different shapes and surfaces.

[0037] Among them, the angle adjustment mechanism 3 includes an adjustment tube 32 and a universal ball 31 connected to the port of the adjustment tube 32. The outer suction cup 1 is sleeved on the universal ball 31. A third channel 33 communicating with the first channel 21 is provided in the adjustment tube 32, and the adjustment tube 32 and the third channel 33 are connected to the air supply device. The adjustment tube 32 is connected to the inner suction cup 2, and can be connected by means of expansion joint, for example, the top of the inner suction cup 2 is located in the third channel 33, or the bottom of the adjustment tube 32 is located in the inner suction cup 2.

[0038] The universal ball 31 is sleeved outside the adjustment tube 32 and is located inside the outer suction cup 1. A support seat 13 is provided inside the outer suction cup 1. The support seat 13 is used to support the universal ball 31. It can be an inward protrusion provided inside the outer suction cup 1, as Figure 3 shown; or a circular - arc - shaped support seat 13 can be provided inside it, and the shape of the circular - arc is matched with the outer wall of the universal ball 31, as Figure 4 shown.

[0039] An upward limit is formed by an inward - set boss at the top of the outer suction cup 1 to prevent the universal ball 31 from detaching from the outer suction cup 1. To further prevent the universal ball 31 from detaching from the outer suction cup 1, a cover plate 4 can be provided at the top of the outer suction cup 1. The cover plate 4 is connected to the outer suction cup 1, and the universal ball 31 is limited by the cover plate 4. The cover plate 4 and the outer suction cup 1 can be connected by bolts.

[0040] To ensure the sealing of the second channel 11, a gasket 5 is added between the cover plate 4 and the outer suction cup 1 to prevent air from entering the second channel 11 through the gap between the outer suction cup 1 and the adjustment tube 32.

[0041] There is a clearance fit between the outer wall of the universal ball 31 and the inner wall of the outer suction cup 1, so that the angle of the outer suction cup 1 can be adjusted more conveniently.

[0042] The universal ball 31 and the adjusting pipe 32 are integrally formed, and both the adjusting pipe 32 and the universal ball 31 are made of hard materials, while the outer suction cup and the inner suction cup are made of soft materials. The universal ball 31 is provided with an adjusting hole 34 from the bottom upwards, which is equivalent to the universal ball 31 being a ball with a blind hole inside, as Figure 3 shown. The adjusting hole 34 is arranged from the bottom upwards and does not penetrate the entire universal ball 31. If the universal ball 31 is solid, there is no space for the universal ball 31 to expand and contract. During the rotation of the universal ball 31, there is a clearance contact fit between its outer wall and the inner wall of the outer suction cup 1, and the universal ball 31 may get stuck and unable to rotate.

[0043] In this application, an adjusting hole 34 is provided inside the universal ball 31, so that there is space for the universal ball 31 to shrink inwards during rotation, and the universal ball 31 will not get stuck and can move freely.

[0044] In order to achieve better effect during vacuum pumping, an air valve 6 is installed on the adjusting pipe 32. The air valve 6 is opened when blowing air and closed when pumping vacuum. In this way, the gas in the first channel 21 and the second channel 11 can be quickly pumped away, and it can also prevent air from entering the first channel 21 through the third channel 33, reducing the suction force.

[0045] In order to facilitate adjustment more conveniently, the adjusting pipe 32 can be designed into two sections, which are obliquely connected between the two sections. When adjusting the angle, it is convenient for the staff to operate.

[0046] A connecting block 22 is arranged between the inner suction cup 2 and the outer suction cup 1, and the inner suction cup 2 and the outer suction cup 1 are fixedly connected through the connecting block 22. A connecting block 22 is arranged at the top of the inner suction cup 2, and a convex platform is arranged in the middle section of the inner side of the outer suction cup 1. The connecting block 22 is located on the convex platform, and the connecting block 22 is located below the angle adjusting mechanism 3.

[0047] If the connecting hole 12 is located below the connecting block 22, the connecting block 22 can also play a sealing role, which is equivalent to the second channel 11 being formed by the outer suction cup 1 and the inner suction cup 2 located below the connecting plate.

[0048] If the connecting hole 12 is located between the angle adjusting mechanism 3 and the connecting block 22, a number of ventilation holes 23 need to be arranged on the connecting block 22, so that the gas in the first channel 21 and the second channel 11 can be pumped away through the ventilation holes 23 during vacuum pumping.

[0049] On the other hand, this application also discloses an automobile sheet metal suction device, which includes the above-mentioned vacuum suction cup, and also includes a gas supply device and a negative pressure device.

[0050] Working process: When the suction cup needs to be used, when the suction cup approaches the adsorbate to be grabbed, the air supply device generates gas, and the gas enters the first channel 21 through the third channel 33. The gas is directly blown onto the surface of the adsorbate, and then diffuses outward from the center of the inner suction cup 2, blowing the impurities on the surface of the adsorbate outside the outer suction cup 1.

[0051] Close the air valve 6, and the negative pressure device starts to pump vacuum. The outer suction cup 1 is positioned with the curved surface of the outer skin of the car door, and the grabbing posture is adjusted by rotating through the universal ball 31. At this time, the air inside the inner suction cup 2 is evacuated to generate vacuum along with the outer suction cup 1 for adsorption. Relying on the height difference between the edge of the inner suction cup 2 and the outer suction cup 1, the downward pressure amount of the inner suction cup 2 on the outer suction cup 1 is limited to prevent the deformation of the part during the adsorption process. At the same time, compared with the original universal suction cup with only one suction cup, in this application, the adsorption capacity is improved by using two suction cups to contact the car door.

[0052] When the suction cup releases the part, the air valve 6 is opened to blow air so that the vacuum suction cup is completely separated from the part, preventing damage caused by incomplete adsorption force release and improper part placement. In this application, through the unique universal angle adjustment mechanism 3, the inner and outer suction cups can be rotated and adjusted at any angle to meet the requirements of different working scenarios. At the same time, the suction cup also has a strong adsorption capacity. Through the principle of vacuum adsorption, various shaped objects can be firmly adsorbed on the surface of the suction cup, facilitating operations such as handling and positioning.

[0053] The above embodiments are only illustrative of the principles and effects of the present invention, and are not used to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A vacuum suction cup, characterized in that: It comprises an outer suction cup (1) and an inner airflow component located inside the outer suction cup (1), wherein one of the outer suction cup (1) and the inner airflow component is used to be connected to a negative pressure device, and the other is used to be connected to an air supply device.

2. The vacuum suction cup according to claim 1, characterized in that: The inner airflow component is an inner suction cup (2) located inside the outer suction cup (1) and separated from the outer suction cup (1); the opening direction of the outer suction cup (1) is the same as the opening direction of the inner suction cup (2); the inner suction cup (2) is connected to a first channel (21), and the outer suction cup (1) is connected to a second channel (11), wherein the first channel (21) is used to communicate with an air supply device, and the second channel (11) is used to communicate with a negative pressure device, or the first channel (21) is used to communicate with a negative pressure device, and the second channel (11) is used to communicate with an air supply device.

3. The vacuum suction cup according to claim 1, characterized in that: In the opening direction of the outer suction cup (1), the inner airflow component does not protrude from the opening edge of the outer suction cup (1).

4. The vacuum suction cup according to claim 2, characterized in that: It also comprises an angle adjustment mechanism (3), the inner suction cup (2) and the outer suction cup (1) are both connected to the angle adjustment mechanism (3), and the angle adjustment mechanism (3) is used to adjust the opening direction of the vacuum suction cup.

5. The vacuum suction cup according to claim 4, characterized in that: The angle adjustment mechanism (3) comprises an adjustment tube (32) and a universal ball (31) connected to a port of the adjustment tube (32); the outer suction cup (1) is sleeved on the universal ball (31) and is clearance-matched with the universal ball (31).

6. The vacuum suction cup according to claim 5, characterized in that: The universal ball (31) is provided with an adjustment hole (34); the adjustment tube (32) is provided with an air valve (6), and the air valve (6) is used to control the connection or disconnection between the first channel (21) and the adjustment tube (32).

7. The vacuum suction cup according to claim 5, characterized in that: A connection block (22) is provided between the inner suction cup (2) and the outer suction cup (1), and the inner suction cup (2) and the outer suction cup (1) are fixedly connected via the connection block (22).

8. The vacuum suction cup according to claim 7, characterized in that: The connection block (22) is provided with a plurality of ventilation holes (23).

9. The vacuum suction cup according to claim 8, characterized in that: A cover plate (4) is provided on the top of the outer suction cup (1), a sealing gasket (5) is provided between the cover plate (4) and the outer suction cup (1), and a support seat (13) is provided inside the outer suction cup (1), the support seat (13) being used to support the universal ball (31).

10. An automobile sheet metal suction device, characterized in that: The vacuum suction cup comprises the vacuum suction cup according to any one of claims 1 to 9, and further comprises an air supply device and a negative pressure device.

Images