CN220516563U

CN220516563U - Porous vacuum chuck

Info

Publication number: CN220516563U
Application number: CN202321775235.9U
Authority: CN
Inventors: 陈功宁
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-07-07
Filing date: 2023-07-07
Publication date: 2024-02-23
Anticipated expiration: 2033-07-07

Abstract

The utility model discloses a porous vacuum chuck, and relates to the technical field of workpiece adsorption equipment; comprises a sucker main body; the sucker main body is internally provided with a cavity and is provided with an adsorption channel; the side wall of the sucker main body is provided with a negative pressure interface, a negative pressure pipeline connecting outlet communicated with the cavity and a negative pressure hand-pulled valve communicated with the negative pressure pipeline connecting outlet; the top surface of the sucker main body is provided with a plurality of adsorption holes communicated with the adsorption channel; each adsorption hole is internally provided with an adsorption component; the adsorption component comprises a sealing valve, an elastic piece and a first sealing ring; the sealing valve is slidably connected in the adsorption hole, the bottom of the elastic piece is fixed on the end face of the bottom of the adsorption hole, the top of the elastic piece is abutted against the bottom of the sealing valve, and the first sealing ring is fixed in the adsorption hole and positioned below the sealing valve.

Description

Porous vacuum chuck

Technical Field

The utility model relates to the technical field of workpiece adsorption equipment, in particular to a porous vacuum chuck.

Background

When a workpiece is processed, the workpiece needs to be fixed and then can be processed, however, some workpieces cannot be directly fixed by a common clamp, and usually the workpiece needs to be fixed by a vacuum chuck, for example, the vacuum chuck is used for fixing non-metal insulating materials such as plastic, bakelite and the like and workpieces made of metal such as stainless steel, aluminum, iron and the like by negative pressure adsorption; the traditional sealing strip sucking disc still needs to seal according to the size of work piece, selects suitable sealing strip, leads to very easily to leak gas, and can't satisfy the machined part and can all be effectively adsorbed in optional position, and especially a small amount of various product machined parts have wasted a large amount of frock clamps/tools, process time, and the recruitment cost is high.

In the prior art, the patent number is 202122395609.1, the patent name is a vacuum chuck with an adsorption port capable of being opened and closed automatically, the vacuum chuck comprises a suction plate, wherein the suction plate is provided with an adsorption channel, a membrane is arranged in the adsorption channel, the adsorption channel is divided into a first cavity and a second cavity by the membrane, and a vent hole for communicating the first cavity with the second cavity is formed in the membrane; one end of the adsorption channel is provided with an adsorption port communicated with the first cavity, and the other end of the adsorption channel is provided with a vacuumizing port communicated with the second cavity; the vent holes and the vacuumizing port are arranged in a staggered manner; the vacuumizing port is communicated with negative pressure: when the adsorption port is not covered by a workpiece, the diaphragm deforms in a state that the air pressure in the first cavity is larger than the air pressure in the second cavity, so that the vent hole is attached to the inner wall of the adsorption channel and/or the diaphragm seals the vacuumizing port; the device stability performance is higher, but its structure setting is complicated, and its internal structure clearance has difficulty.

Therefore, how to provide a porous vacuum chuck with simple and stable structure, good adsorption effect, high sealing performance and convenient cleaning is a problem to be solved by the technicians in the field.

Disclosure of Invention

In view of the above, the present utility model provides a porous vacuum chuck, which aims to solve the above technical problems.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a porous vacuum chuck comprises a chuck main body; the sucker main body is internally provided with a cavity and is provided with an adsorption channel; the side wall of the sucker main body is provided with a negative pressure interface, a negative pressure pipeline connecting outlet communicated with the cavity and a negative pressure hand-pulled valve communicated with the negative pressure pipeline connecting outlet; the top surface of the sucker main body is provided with a plurality of adsorption holes communicated with the adsorption channels; each adsorption hole is internally provided with an adsorption component; the adsorption component comprises a sealing valve, an elastic piece and a first sealing ring; the sealing valve is slidably connected inside the adsorption hole, the bottom of the elastic piece is fixed on the end face of the bottom of the adsorption hole, the top of the elastic piece is abutted to the bottom of the sealing valve, and the first sealing ring is fixed inside the adsorption hole and is positioned below the sealing valve.

According to the technical scheme, in the porous vacuum chuck provided by the utility model, through the arrangement of the adsorption component, the stable negative pressure in the adsorption hole can be kept, so that the adsorption effect of a workpiece can be ensured; the negative pressure interface is connected with an external negative pressure source through a pipeline, extracts air in the cavity of the sucker main body, and the negative pressure pipeline connection outlet is communicated with the cavity and is communicated with the negative pressure hand-pulled valve through a pipeline; opening a negative pressure hand-pulled valve, extracting air in an adsorption hole communicated with the adsorption channel, enabling the sealing valve to move downwards, compressing the elastic piece, enabling the bottom of the sealing valve to be in contact with the first sealing ring to form sealing, and continuously maintaining stable negative pressure above the sealing valve in the adsorption hole in a region covered by a workpiece to realize the adsorption of the workpiece; the area without the coverage of the workpiece can not cause air leakage due to the contact between the sealing valve and the first sealing ring; the utility model has simple structure, each adsorption hole is provided with an independently controlled adsorption component, can realize the adsorption of workpieces with different shapes and sizes, has good air tightness and effectively ensures the adsorption effect.

Preferably, in the porous vacuum chuck, the adsorption assembly further comprises a filter disc and a second sealing ring; the adsorption hole can be divided into a vacuum cavity and a sealing cavity which are communicated with each other from top to bottom; the filter plate is fixed on the inner side wall of the vacuum cavity, and the second sealing ring is fixed on the inner side wall of the vacuum cavity and positioned below the filter plate; the sealing valve is slidably connected in the vacuum cavity and the sealing cavity, the bottom of the elastic piece is fixed at the bottom of the sealing cavity, and the top of the elastic piece is abutted with the bottom of the sealing valve; the first sealing ring is fixed on the inner side wall of the sealing cavity and is positioned below the sealing valve. The arrangement of the filter disc can effectively prevent powder and waste residues generated in the processing process from entering the sucker body, so that the service life is prolonged; the setting of second sealing washer can prevent powder, waste residue through the filter plate side entering sucking disc body inside, plays dual protection's effect, can increase overall structure's leakproofness simultaneously.

Preferably, in the porous vacuum chuck, the filter sheet is a copper sintered filter sheet, and other filter materials may be used.

Preferably, in the porous vacuum chuck, the sealing valve has a ball structure, and a sliding gap exists between the outer diameter of the sealing valve and the inner side wall of the sealing cavity. When the air in the adsorption hole is extracted, the sealing valve moves downwards to compress the elastic piece and form a seal with the first sealing ring; the sealing valve adopts a sphere structure, and when the bottom of the sealing valve is completely contacted with the first sealing ring, the sealing valve forms a seal, so that a better sealing effect is achieved.

Preferably, in the porous vacuum chuck, the sealing valve is a glass bead. Because the material of glass pearl has the characteristic that is difficult for adsorbing oily material, consequently adopt glass pearl as the seal, can guarantee the life of sealing valve, when clear up simultaneously, can accomplish the washing fast, improve cleaning efficiency.

Preferably, in the above porous vacuum chuck, the chuck main body includes a bottom plate, a vacuum plate and a chuck body fixedly connected in sequence from bottom to top; the bottom plate is provided with a negative pressure access channel; the negative pressure interface is arranged on the side wall of the bottom plate and is communicated with the negative pressure access channel; the vacuum plate is internally provided with a cavity, the top of the vacuum plate is provided with the adsorption channel, and the cavity is communicated with the negative pressure access channel; the negative pressure pipeline connecting outlet is arranged on the side wall of the vacuum plate and is communicated with the cavity; the negative pressure hand-pulled valve is arranged on the side wall of the vacuum plate and is communicated with the adsorption channel; the sucking disc body is provided with a plurality of sucking holes. The negative pressure interface is communicated with an external negative pressure source, gas inside the vacuum plate cavity can be extracted through the communication of the negative pressure access channel and the cavity, meanwhile, the negative pressure pipeline is connected with the outlet and the cavity to be communicated with the negative pressure hand-operated valve through the pipeline, when the negative pressure hand-operated valve is opened, the gas in the adsorption hole is extracted through the communication of the adsorption channel on the upper part of the vacuum plate and the adsorption hole, so that the sealing valve moves downwards, the upper part of the sealing valve of the adsorption hole is a vacuum cavity, the lower part of the sealing valve is a sealing cavity, and the adsorption of the space and the gas leakage of other areas are completed.

Preferably, in the above porous vacuum chuck, a negative pressure gauge is further installed on a side wall of the vacuum plate, and the negative pressure gauge is communicated with the cavity. The setting of negative pressure table can be convenient for observe atmospheric pressure intensity, in time handles after appearing unusual, guarantees vacuum pressure's stability, and then improves the adsorption affinity.

Preferably, in the above-mentioned porous vacuum chuck, a positive pressure interface is further installed on a side wall of the vacuum plate; the positive pressure interface is communicated with the adsorption channel. The residual waste residue on the adsorption channel can be cleaned by blowing gas through the positive pressure interface, and the service life is prolonged.

Preferably, in the above porous vacuum chuck, a rubber pad is adhered to the top of the chuck body, and a plurality of through holes are formed in the rubber pad; the through holes are in one-to-one correspondence with the adsorption holes. The rubber pad plays the effect of protection, can increase overall structure leakproofness simultaneously.

Compared with the prior art, the utility model discloses a porous vacuum chuck, which has the following beneficial effects:

1. the utility model has simple and stable structure and good air tightness.

2. The utility model can realize the adsorption of workpieces with different shapes and sizes by arranging the adsorption component, and can form a seal in the area which is not covered by the workpiece so as to avoid air leakage.

3. The utility model adopts the ball sealing valve and is matched with the first sealing ring, thereby improving the air tightness of the whole structure.

4. The filter disc and the second sealing ring can effectively prevent impurities such as dust, waste residue and the like from entering the adsorption holes, and the service life is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a porous vacuum chuck according to the present utility model;

FIG. 2 is a cross-sectional view of the view A-A of FIG. 1;

fig. 3 is a sectional view of the B-B of fig. 1.

Wherein:

1-a sucker main body;

11-adsorption channels; 12-a bottom plate; 13-vacuum plate; 14-a sucker body;

2-negative pressure interface;

3-negative pressure pipeline is connected with the outlet;

4-adsorption holes;

5-adsorbing assembly;

51-sealing valve; 52-an elastic member; 53-a first sealing ring; 54-filter sheets; 55-a second sealing ring;

6-negative pressure hand-pulled valve;

7-a negative pressure meter;

8-a rubber pad;

9-positive pressure interface.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 3, an embodiment of the present utility model discloses a porous vacuum chuck, comprising a chuck body 1; the sucker main body is internally provided with a cavity and is provided with an adsorption channel 11; the side wall of the sucker main body 1 is provided with a negative pressure connector 2, a negative pressure pipeline connecting outlet 3 communicated with the cavity and a negative pressure hand-pulled valve 6 communicated with the negative pressure pipeline connecting outlet 3; the top surface of the sucker main body 1 is provided with a plurality of sucking holes 4 communicated with the sucking channels 11; each adsorption hole 4 is internally provided with an adsorption component 5; the adsorption assembly 5 includes a sealing valve 51, an elastic member 52, and a first seal ring 53; the sealing valve 51 is slidably connected inside the adsorption hole 4, the bottom of the elastic piece 52 is fixed on the end surface of the bottom of the adsorption hole 4, the top of the elastic piece is abutted against the bottom of the sealing valve 51, and the first sealing ring 53 is fixed inside the adsorption hole 4 and is positioned below the sealing valve 51.

To further optimize the solution described above, the elastic element 52 is a compression spring.

To further optimize the above technical solution, the adsorption assembly 5 further comprises a filter disc 54 and a second sealing ring 55; the adsorption hole 4 is divided into a vacuum cavity and a sealing cavity which are mutually communicated from top to bottom; the filter disc 54 is fixed on the inner side wall of the vacuum cavity, and the second sealing ring 55 is fixed on the inner side wall of the vacuum cavity and is positioned below the filter disc 54; the sealing valve 51 is slidably connected in the vacuum cavity and the sealing cavity, the bottom of the elastic piece 52 is fixed at the bottom of the sealing cavity, and the top of the elastic piece is abutted with the bottom of the sealing valve 51; a first seal ring 53 is secured to the inner side wall of the seal chamber and is positioned below the seal valve 51.

In order to further optimize the technical scheme, the vacuum cavity and the sealing cavity are sequentially provided with a first step 41, a second step 42, a third step 43 and a fourth step 44, wherein the inner diameters of the first step 41, the second step 42, the third step 43 and the fourth step 44 are sequentially reduced from top to bottom and are mutually communicated;

the inner side wall of the first step section 41 is provided with a first annular groove 411 extending radially; a clamping ring 412 is arranged in the first annular groove 411, and the filter disc 54 is fixed on the inner side of the first step section 41 through the clamping ring 412; the second sealing ring 55 is mounted on the step surface at the bottom of the first step section 41 and is abutted against the bottom of the filter piece 54;

a sealing valve 51 is slidably coupled inside the second step 42; the elastic member 52 is coaxially disposed inside the third step 43, and has a top end abutting against the bottom of the sealing valve 51, a bottom fixedly connected to the upper end surface of the fourth step 44, and the fourth step 44 communicates with the adsorption passage 11.

The bottom of the inner side wall of the second step section 42 is provided with a second annular groove 421; the first seal ring 53 is installed in the second ring groove 421.

To further optimize the solution described above, the sealing valve 51 is a glass bead with a sliding gap between its outer diameter and the inner side wall of the second step 42.

In order to further optimize the technical scheme, the sucker main body 1 comprises a bottom plate 12, a vacuum plate 13 and a sucker body 14 which are fixedly connected in sequence from bottom to top; the side wall of the bottom plate 12 is provided with a negative pressure access channel in an extending way towards the inside; the negative pressure interface 2 is arranged on the side wall of the bottom plate 12 and is communicated with the inlet end of the negative pressure access channel; the vacuum plate 13 is internally provided with a cavity, and the top of the vacuum plate is provided with an adsorption channel 11; the cavity is communicated with the outlet end of the negative pressure access channel; the negative pressure pipeline connecting outlet 3 is arranged on the side wall of the vacuum plate 13 and is communicated with the cavity; the negative pressure hand valve 6 is arranged on the side wall of the vacuum plate 13 and is communicated with the adsorption channel 11; the sucker body 14 is provided with a plurality of suction holes 4.

In order to further optimize the technical scheme, the number of the negative pressure hand-pulled valves 6 can be multiple, the negative pressure hand-pulled valves 6 are communicated with the negative pressure pipeline connecting outlet 3, the separate control of the adsorption body 14 in different areas can be realized, and the energy sources are effectively saved.

In order to further optimize the technical scheme, the side wall of the vacuum plate 13 is also provided with a negative pressure meter 7, and the negative pressure meter 7 is communicated with the cavity.

In order to further optimize the technical scheme, the side wall of the vacuum plate 13 is also provided with a positive pressure interface 9; the positive pressure interface 9 communicates with the adsorption channel 11.

In order to further optimize the technical scheme, the top of the sucker body 14 is adhered with a rubber pad 8, and a plurality of through holes are formed in the rubber pad 8; the plurality of through holes are in one-to-one correspondence with the plurality of adsorption holes 4.

The specific implementation mode of the utility model is as follows:

initial state: the negative pressure hand valve 6 is in a closed state, while the top of the sealing valve 51 abuts against the filter sheet 54.

Working state: the processing workpiece is placed on the rubber pad 8, the negative pressure interface 2 is communicated with an external negative pressure source (vacuum pump) through a pipeline, gas in the cavity of the vacuum plate 13 is extracted, the negative pressure pipeline is connected with the outlet 3 and communicated with the cavity, the negative pressure hand-pulled valve 6 is opened, meanwhile, the negative pressure hand-pulled valve 6 is communicated with the adsorption channel 11, the adsorption channel 11 is communicated with the adsorption hole 4, further, the extraction of the gas in the adsorption hole 4 is realized, the sealing valve 51 is driven to move downwards, meanwhile, the elastic piece 52 is compressed, the bottom of the sealing valve 51 is contacted with the first sealing ring 53 to form a seal, at the moment, the upper part of the sealing valve 51 in the adsorption hole 4 with the processing workpiece is in a vacuum state, the adsorption is realized on the processing workpiece, and no gas leakage phenomenon is caused because of the sealing valve 51 and the first sealing ring 53 form in the adsorption hole 4.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A porous vacuum chuck, comprising a chuck body (1); the sucker main body is internally provided with a cavity and is provided with an adsorption channel (11); the side wall of the sucker main body (1) is provided with a negative pressure interface (2), a negative pressure pipeline connecting outlet (3) communicated with the cavity and a negative pressure hand-pulled valve (6) communicated with the negative pressure pipeline connecting outlet (3); the top surface of the sucker main body (1) is provided with a plurality of adsorption holes (4) communicated with the adsorption channel (11); the device is characterized in that each adsorption hole (4) is internally provided with an adsorption component (5); the adsorption assembly (5) comprises a sealing valve (51), an elastic piece (52) and a first sealing ring (53); the sealing valve (51) is slidably connected inside the adsorption hole (4), the bottom of the elastic piece (52) is fixed on the end face of the bottom of the adsorption hole (4), the top of the elastic piece is abutted to the bottom of the sealing valve (51), and the first sealing ring (53) is fixed inside the adsorption hole (4) and is located below the sealing valve (51).

2. A porous vacuum chuck according to claim 1, characterized in that the suction assembly (5) further comprises a filter disc (54) and a second sealing ring (55); the adsorption hole (4) is divided into a vacuum cavity and a sealing cavity which are mutually communicated from top to bottom; the filter plate (54) is fixed on the inner side wall of the vacuum cavity, and the second sealing ring (55) is fixed on the inner side wall of the vacuum cavity and is positioned below the filter plate (54).

3. A porous vacuum chuck according to claim 2, characterized in that the sealing valve (51) is of spherical construction.

4. A porous vacuum chuck according to claim 1, characterized in that the chuck body (1) comprises a bottom plate (12), a vacuum plate (13) and a chuck body (14) fixedly connected in sequence from bottom to top; the bottom plate (12) is provided with a negative pressure access channel; the negative pressure interface (2) is arranged on the side wall of the bottom plate (12) and is communicated with the negative pressure access channel; the vacuum plate (13) is internally provided with a cavity, and the top of the vacuum plate is provided with the adsorption channel (11); the cavity is communicated with the negative pressure access channel; the negative pressure pipeline connecting outlet (3) is arranged on the side wall of the vacuum plate (13) and is communicated with the cavity; the negative pressure hand-operated valve (6) is arranged on the side wall of the vacuum plate (13) and is communicated with the adsorption channel (11); the sucker body (14) is provided with a plurality of sucking holes (4).

5. A porous vacuum chuck according to claim 4, characterized in that a negative pressure gauge (7) is also mounted on the side wall of the vacuum plate (13), the negative pressure gauge (7) being in communication with the cavity.

6. A porous vacuum chuck according to claim 4, characterized in that the side wall of the vacuum plate (13) is also provided with a positive pressure interface (9); the positive pressure interface (9) is communicated with the adsorption channel (11).

7. The porous vacuum chuck according to claim 4, wherein a rubber pad (8) is adhered to the top of the chuck body (14), and a plurality of through holes are formed in the rubber pad (8); the through holes are in one-to-one correspondence with the adsorption holes (4).