CN216608134U

CN216608134U - Suction cup device

Info

Publication number: CN216608134U
Application number: CN202122450362.9U
Authority: CN
Inventors: 张小军; 刘长文; 谭晓军
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2022-05-27
Anticipated expiration: 2031-10-11

Abstract

The application provides a suction cup device, includes: the air-tight cover comprises a base, a cover plate and a plurality of air-tight components, wherein the top of the base is provided with an air-tight groove, the cover plate is hermetically and fixedly covered on the top of the air-tight groove, an air-tight cavity is formed between the air-tight groove and the bottom of the cover plate, and the bottom of the cover plate is vertically upwards provided with a plurality of mounting grooves for the one-to-one corresponding mounting of the air-tight components; the top of the cover plate is vertically provided with an adsorption groove which is arranged right above the mounting groove one by one, the isolation layer is vertically provided with a first vent hole and a second vent hole, the air closing assembly comprises a vent nozzle, a sealing valve body and an elastic piece, the vent nozzle is fixedly mounted in the corresponding mounting groove in a sealing mode, the sealing valve body is vertically movably arranged at the top of the vent nozzle and is located right below the first vent hole, and the sealing valve body is provided with a vent position and an air closing position in the vertical direction; the elastic piece is abutted between the sealing valve body and the vent nozzle, and the elastic piece constantly drives the sealing valve body to move towards the ventilation position.

Description

Suction cup device

Technical Field

The application relates to the technical field of fixing devices for machine tool machining, in particular to a sucker device.

Background

As is known, during the machining of a workpiece by a machine tool, suction-type suction cups are often used to hold the workpiece to be machined.

When a traditional adsorption type sucking disc is used for fixing a workpiece, the workpiece is firstly placed on the sucking disc, and the part, which is not covered by the workpiece, of the sucking disc is sealed by using a rubber strip, so that the part, which is not covered by the workpiece, of the sucking disc is prevented from being always in a gas suction state, and the sucking disc can be guaranteed to have enough adsorption fixing force on the workpiece. Therefore, when the workpiece is replaced or moved, the rubber strips need to be repeatedly assembled and disassembled, the use operation is very complicated, and the operation efficiency is low. In addition, the conventional suction type suction cup has a disadvantage of a complicated structure.

Therefore, there is a need for a suction cup device to overcome the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a sucker device, which has the advantages of simple structure, simple and fast use and operation and high operation efficiency.

To achieve the above object, a first aspect of embodiments of the present application provides a suction cup device, including: the air exhaust device comprises a base, a cover plate and a plurality of air closing components, wherein the top of the base is provided with an air vent groove, the cover plate is fixedly covered on the top of the air vent groove in a closed manner, an air vent cavity is formed between the air vent groove and the bottom of the cover plate, and the air vent cavity is communicated with an external vacuum air exhaust device; the bottom of the cover plate is vertically upwards provided with a plurality of mounting grooves for the air-closing assemblies to be mounted in a one-to-one correspondence manner, and the lower ends of the mounting grooves are communicated with the ventilation cavity; the top of the cover plate is vertically provided with downward adsorption grooves which are opposite to the upper parts of the installation grooves one by one, and an isolation layer is formed between the installation grooves and the adsorption grooves which are opposite to the installation grooves; a first vent hole and a second vent hole are vertically formed in the isolation layer, the first vent hole and the second vent hole are both communicated between the mounting groove and the adsorption groove, and the inner diameter of the first vent hole is larger than that of the second vent hole; the gas block assembly includes: the vent nozzle is fixedly installed in the corresponding installation groove in a sealing mode, the sealing valve body is vertically and movably arranged at the top of the vent nozzle, the sealing valve body is located right below the first vent hole, and the sealing valve body is provided with a vent position and an air-blocking position in the vertical direction; when the sealing valve body is positioned at the ventilation position, the sealing valve body is abutted against the first ventilation hole and opens the ventilation nozzle; when the sealing valve body is positioned at the air-closing position, the sealing valve body is far away from the first vent hole and seals the vent nozzle; the elastic piece is abutted between the sealing valve body and the vent nozzle, and the elastic piece constantly drives the sealing valve body to move towards the ventilation position.

Optionally, the sealing valve body comprises a sealing cap body, a guide rod formed by downward extension of the sealing cap body, and a pushed cap body formed at the top of the sealing cap body, the guide rod is inserted into the vent nozzle in a clearance fit manner, the sealing cap body can be opened and closed at the top of the vent nozzle, the pushed cap body is located right below the first vent hole, and the diameter of the pushed cap body is greater than the inner diameter of the first vent hole; the elastic piece is in compressed abutting connection between the air vent nozzle and the sealing cap body.

Optionally, the gas block assembly further comprises: the first sealing ring is arranged at the top of the breather nozzle.

Optionally, the suction cup device further comprises: and the filter screens correspond to the adsorption grooves one to one, and the filter screens are accommodated in the adsorption grooves.

Optionally, the air-guiding groove comprises a connecting through groove and a plurality of strip-shaped air-guiding through grooves, the air-guiding through grooves are all communicated with the connecting through groove, and the lower end of the air-guiding nozzle is right opposite to the connecting through groove or the air-guiding through groove.

Optionally, a plurality of air guide grooves that communicate each other and open up down are seted up to the bottom of base, the sucking disc device still includes: the sealing bottom plates are in one-to-one correspondence with the air guide grooves, the sealing bottom plates are in one-to-one correspondence and hermetically cover the notches of the air guide grooves, one of the air guide grooves is communicated with the external vacuum air extractor, and the connecting through groove is communicated with one of the air guide grooves.

Optionally, the suction cup device further comprises: the second sealing rings correspond to the air guide grooves one to one, mounting steps are further formed in the notches of the air guide grooves, and the second sealing rings are arranged between the corresponding mounting steps and the sealing bottom plate.

Optionally, the suction cup device further comprises: and the third sealing ring is arranged between the base and the cover plate.

Optionally, the suction cup device further comprises: the protective top plate is hermetically fixed at the top of the cover plate, and the protective top plate is provided with adsorption through holes which are communicated with the adsorption grooves in a one-to-one correspondence mode.

Optionally, the inner diameter of the adsorption through hole is smaller than the inner diameter of the adsorption groove.

Because the top of the base of the sucker device is provided with the ventilating groove, the cover plate is fixedly covered on the top of the ventilating groove in a closed manner, a ventilating cavity is formed between the ventilating groove and the bottom of the cover plate, and the ventilating cavity is communicated with the external vacuum air extractor; the bottom of the cover plate is vertically upwards provided with a plurality of mounting grooves for mounting the air-closing components in a one-to-one corresponding manner, and the lower ends of the mounting grooves are communicated in the ventilation cavity; the top of the cover plate is vertically provided with adsorption grooves which are opposite to the upper parts of the mounting grooves one by one, and an isolation layer is formed between the mounting grooves and the adsorption grooves which are opposite to the mounting grooves; a first vent hole and a second vent hole are vertically formed in the isolation layer, the first vent hole and the second vent hole are both communicated between the mounting groove and the adsorption groove, and the inner diameter of the first vent hole is larger than that of the second vent hole; the vent nozzle is fixedly arranged in the corresponding mounting groove in a sealing manner, the sealing valve body is vertically movably arranged at the top of the vent nozzle and is positioned right below the first vent hole, and the sealing valve body is provided with a vent position and an air-blocking position along the vertical direction; when the sealing valve body is positioned at the ventilation position, the sealing valve body is abutted against the first ventilation hole and opens the ventilation nozzle; when the sealing valve body is positioned at the air-closing position, the sealing valve body is far away from the first vent hole and seals the vent nozzle; the elastic piece is abutted between the sealing valve body and the vent nozzle, and the elastic piece constantly drives the sealing valve body to move towards the ventilation position. Then, after a workpiece to be processed is placed on the cover plate, the ventilation cavity is communicated with the external vacuum pumping device for vacuumizing, the adsorption groove covered by the workpiece is enabled to form a closed space with the installation groove, the sealing valve body is not maintained at the ventilation position under the action of downward pressing force, the sealing valve body abuts against the first ventilation hole and opens the ventilation nozzle, and the part on the workpiece opposite to the first ventilation hole can be adsorbed through the adsorption groove, so that the workpiece is adsorbed and fixed. For the adsorption groove which is not covered by the workpiece, the adsorption groove is communicated with the external atmospheric pressure, the external vacuum pumping device performs vacuum pumping, the atmospheric pressure in the installation groove is lower than the atmospheric pressure on the adsorption groove, the external gas can enter the installation groove from the first vent hole and the second vent hole, the internal diameter of the first vent hole is larger than that of the second vent hole, more gas passes through the first vent hole and enters the installation groove than the second vent hole, the internal pressure in the installation groove can not be immediately changed to be the same as the internal pressure in the adsorption groove, and the gas entering from the first vent hole can generate a downward pressure applying acting force on the sealing valve body to push the sealing valve body to move downwards to the air-closed position, so that the sealing valve body seals the vent nozzle and does not suck the outside any more. Therefore, the automatic opening and closing of the air closing assembly are realized, the sealing of the rubber strip is not needed, the rubber strip is not needed to be repeatedly assembled and disassembled when the workpiece is replaced or moved, the use and the operation are simpler and faster, and the operation efficiency is greatly improved. Moreover, the structure is simple and reasonable.

Drawings

Fig. 1 is an assembled perspective view of a suction cup device in an embodiment of the present application.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is a top view of fig. 1.

Fig. 4 is a sectional view taken along line a-a of fig. 3.

Fig. 5 is an enlarged view of a portion B in fig. 4.

Fig. 6 is a perspective view of the base, the second sealing ring and the sealing bottom plate of the suction cup device according to the embodiment of the present disclosure.

Fig. 7 is a schematic view of fig. 6 from another viewing angle.

Fig. 8 is an exploded view of fig. 7.

Detailed Description

The present application will be further described with reference to the accompanying drawings and preferred embodiments, but the embodiments of the present application are not limited thereto.

Referring to fig. 1 to 6, in the suction cup device 100 of the present application, a base 10, a cover plate 20 and a plurality of air-closing components 30 are provided, wherein a ventilation groove 11 is formed at the top of the base 10, the cover plate 20 is hermetically fixed to cover the top of the ventilation groove 11, a ventilation cavity (not labeled in the figures) is formed between the ventilation groove 11 and the bottom of the cover plate 20, the ventilation cavity is communicated with an external vacuum pumping device, the ventilation cavity is pumped by the external vacuum pumping device, and the specific structure of the external vacuum pumping device is well known to those skilled in the art, and therefore, details are not described herein. The bottom of the cover plate 20 is vertically upwards provided with a plurality of mounting grooves 21 for the air-closing components 30 to be mounted in a one-to-one correspondence manner, and the lower ends of the mounting grooves 21 are communicated in the ventilation cavity; the top of the cover plate 20 is vertically provided with downward adsorption grooves 22 which are opposite to the upper parts of the installation grooves 21, and an isolation layer 23 is formed between the installation grooves 21 and the opposite adsorption grooves 22; first air vent 231 and second air vent 232 are vertically arranged on the isolation layer 23, the first air vent 231 and the second air vent 232 are both communicated between the mounting groove 21 and the adsorption groove 22, and the inner diameter of the first air vent 231 is larger than that of the second air vent 232. The gas block assembly 30 includes: breather 31, sealed valve body 32 and elastic component 33, breather 31 are inclosed fixed mounting in the mounting groove 21 that corresponds, and sealed valve body 32 is vertical removal and locates the top of breather 31, and sealed valve body 32 is located first air vent 231 under, and sealed valve body 32 has a ventilation position and a position of keeping off the gas along vertical direction. When the sealing valve body 32 is in the venting position (as shown in fig. 5), the sealing valve body 32 abuts against the first venting hole 231 and opens the venting nipple 31. When the sealing valve body 32 is in the gas-closed position, the sealing valve body 32 is away from the first ventilation hole 231 and seals the ventilation nozzle 31. The elastic member 33 abuts between the sealing valve body 32 and the vent nozzle 31, and the elastic member 33 constantly urges the sealing valve body 32 to move toward the vent position. After a workpiece to be machined is placed on the cover plate 20, the ventilation cavity is communicated with an external vacuum pumping device for vacuum pumping, the adsorption groove 22 covered by the workpiece is enabled to form a closed space with the adsorption groove 22 and the mounting groove 21, the sealing valve body 32 is not subjected to the acting force of downward pressing and is maintained at the ventilation position, the sealing valve body 32 abuts against the first ventilation hole 231 and opens the ventilation nozzle 31, namely, the part on the opposite workpiece can be adsorbed through the adsorption groove 22, and thus the workpiece is adsorbed and fixed. For the adsorption groove 22 which is not covered by the workpiece, the adsorption groove 22 is communicated with the external atmospheric pressure, because the external vacuum pumping device is used for pumping vacuum, the air pressure in the mounting groove 21 is lower than the air pressure on the adsorption groove 22, the external air can enter the mounting groove 21 from the first vent hole 231 and the second vent hole 232, and because the inner diameter of the first vent hole 231 is larger than that of the second vent hole 232, more air in the first vent hole 231 enters the mounting groove 21 than the second vent hole 232, so that the air pressure in the mounting groove 21 does not immediately become the same as the air pressure in the adsorption groove 22, and the gas entering from the first ventilation hole 231 will generate a downward pressing force on the sealing valve body 32 to push the sealing valve body 32 to move downward to the air-closed position, so that the sealing valve body 32 seals the ventilation nozzle 31 and does not suck the outside. Therefore, the air-tight component 30 can be automatically opened and closed without using rubber strips for sealing, when a workpiece is replaced or moved, the rubber strips do not need to be repeatedly assembled and disassembled, the use and the operation are simpler and faster, and the operation efficiency is greatly improved. Specifically, the following:

referring to fig. 5, the sealing valve 32 includes a sealing cap 321, a guiding rod 322 formed by extending the sealing cap 321 downward, and a pushed cap 323 formed at the top of the sealing cap 321, the guiding rod 322 is inserted into the vent nozzle 31 in a clearance fit manner, the sealing cap 321 can be opened and closed at the top of the vent nozzle 31, the pushed cap 323 is located right below the first vent 231, and the diameter of the pushed cap 323 is greater than the inner diameter of the first vent 231; the elastic member 33 is compressed and in contact with the air vent 31 and the sealing cap 321. In the present embodiment, the elastic element 33 may be a spring, but not limited thereto. The sealing cap body 321 is pushed by the elastic force of the elastic member 33 to drive the pushed cap body 323 to move upward constantly. When the absorption groove 22 is covered by the workpiece, the absorption groove 22 and the installation groove 21 form a closed space, the pushed cap 323 on the sealing valve body 32 is not pressed downward and is maintained at the ventilation position, the pushed cap 323 on the sealing valve body 32 is abutted against the first ventilation hole 231, and the sealing cap 321 opens the ventilation nozzle 31, so that the part of the workpiece facing the ventilation nozzle can be absorbed and fixed through the absorption groove 22. When the absorption groove 22 is not covered by the workpiece, the absorption groove 22 is connected to the outside atmospheric pressure, and the outside vacuum pumping device performs vacuum pumping, so that the atmospheric pressure in the installation groove 21 is lower than the atmospheric pressure on the absorption groove 22, the outside air can enter the installation groove 21 from the first vent hole 231 and the second vent hole 232, because the inner diameter of the first vent hole 231 is larger than the inner diameter of the second vent hole 232, more air passes through the first vent hole 231 than the second vent hole 232 into the installation groove 21, so that the air pressure in the installation groove 21 does not immediately become the same as the air pressure in the absorption groove 22, and the air entering from the first vent hole 231 can generate a downward pressing force on the pushed cap 323 on the sealing valve body 32 to push the pushed cap 323 on the sealing valve body 32 to drive the sealing cap 321 to move downward to the air-closing position against the elastic force of the elastic member 33, so that the sealing cap body 321 on the sealing valve body 32 seals the air vent 31, and the suction groove 22 no longer sucks the outside.

Preferably, the air-lock assembly 30 further comprises: the first sealing ring 34 is disposed on the top of the air vent 31, and when the sealing cap body 321 is moved to the air-closed position, the air vent 31 and the sealing cap body 321 are better sealed to prevent air leakage.

Further, the suction cup device 100 of the present application further includes: with the filter screen 40 of adsorbing recess 22 one-to-one, filter screen 40 holds in adsorbing recess 22 to prevent that the produced piece of work piece course of working from entering into mounting groove 21 and the cavity of ventilating, the structure is more reasonable.

Referring to fig. 2 and 6, the ventilation groove 11 includes a connecting through groove 111 and a plurality of strip-shaped air guiding through grooves 112, the air guiding through grooves 112 are all communicated with the connecting through groove 111, and the lower ends of the air nozzles 31 are opposite to the connecting through groove 111 or the air guiding through groove 112, so that the vacuum pressure at the lower end of each air nozzle 31 is more stable and balanced, and the structure is more reasonable.

Referring to fig. 4, 7 and 8, the bottom of the base 10 is formed with a plurality of air guide grooves 12 that are communicated with each other and have downward openings, and the suction cup device 100 further includes: the sealing bottom plates 50 are in one-to-one correspondence with the air guide grooves 12, the sealing bottom plates 50 are in one-to-one correspondence and are sealed to cover the notches of the air guide grooves 12, one of the air guide grooves 12 is communicated with an external vacuum air extraction device, and the connecting through groove 111 is communicated with one of the air guide grooves 12, so that the vacuum air pressure obtained in the air guide cavity is ensured to be more stable, and the air pressure fluctuation is reduced. Preferably, the suction cup device 100 of the present application further comprises: the second sealing rings 60 are in one-to-one correspondence with the air guide grooves 12, mounting steps 121 are further formed in the notches of the air guide grooves 12, and the second sealing rings 60 are arranged between the corresponding mounting steps 121 and the sealing bottom plate 50, so that the sealing bottom plate 50 and the notches of the air guide grooves 12 are better in airtightness, and the air leakage is prevented.

Referring to fig. 2, 4 and 5, the suction cup device 100 of the present application further includes: and a third sealing ring 70, wherein the third sealing ring 70 is arranged between the base 10 and the cover plate 20. The air tightness between the base 10 and the cover plate 20 is better, and the air leakage is prevented.

Referring to fig. 1 to 5, the suction cup device 100 of the present application further includes: the top plate 80 is hermetically fixed on the top of the cover plate 20, and the top plate 80 is provided with adsorption through holes 81 which are communicated with the adsorption grooves 22 in a one-to-one correspondence manner. Not only can ensure the normal absorption of work piece fixed, can play the effect of protection to apron 20 moreover, prevent that the work piece from corresponding apron 20 and causing wearing and tearing or damage, the structure is more reasonable. Preferably, the inner diameter of the adsorption through hole 81 is smaller than the inner diameter of the adsorption groove 22, so as to prevent the filter screen 40 from being accidentally separated from the adsorption groove 22, and the structure is more reasonable.

The principle of operation of the suction cup device 100 of the present application will be described in detail with reference to the accompanying drawings:

first, a workpiece to be processed is placed on the protective top plate 80 on the cover plate 20, and the vent cavity is communicated with an external vacuum pumping device for vacuum pumping.

For the adsorption groove 22 covered by the workpiece, the adsorption groove 22 and the installation groove 21 form a closed space, the pushed cap 323 on the sealing valve body 32 is not pressed downward and is maintained at the ventilation position, the pushed cap 323 on the sealing valve body 32 is abutted against the first ventilation hole 231, and the sealing cap 321 opens the ventilation nozzle 31, so that the part of the workpiece facing the part can be adsorbed and fixed through the adsorption groove 22.

For the absorption groove 22 not covered by the workpiece, the absorption groove 22 is connected to the outside atmospheric pressure, and the external vacuum pumping device performs vacuum pumping, so that the atmospheric pressure in the installation groove 21 is lower than the atmospheric pressure on the absorption groove 22, the outside air can enter the installation groove 21 from the first vent hole 231 and the second vent hole 232, and because the inner diameter of the first vent hole 231 is larger than the inner diameter of the second vent hole 232, more air in the first vent hole 231 passes through the installation groove 21 than the second vent hole 232, so that the air pressure in the installation groove 21 is not immediately changed to be the same as the air pressure in the absorption groove 22, and the air entering from the first vent hole 231 can generate a downward pressing force on the sealing valve body 32 to push the pushed cap body 323 on the sealing valve body 32 to drive the sealing cap body 321 to move downward to the air-closing position against the elastic force of the elastic member 33, so that the sealing cap body 321 on the sealing valve body 32 seals the air vent 31, and the suction groove 22 no longer sucks the outside.

Because the top of the base 10 of the suction cup device 100 of the present application is provided with the ventilation groove 11, the cover plate 20 is hermetically fixed to cover the top of the ventilation groove 11, a ventilation cavity is formed between the ventilation groove 11 and the bottom of the cover plate 20, and the ventilation cavity is communicated with an external vacuum pumping device; the bottom of the cover plate 20 is vertically upwards provided with a plurality of mounting grooves 21 for the air-closing components 30 to be mounted in a one-to-one correspondence manner, and the lower ends of the mounting grooves 21 are communicated in the ventilation cavity; the top of the cover plate 20 is vertically provided with downward adsorption grooves 22 which are opposite to the upper parts of the installation grooves 21, and an isolation layer 23 is formed between the installation grooves 21 and the opposite adsorption grooves 22; a first vent hole 231 and a second vent hole 232 are vertically formed in the isolation layer 23, the first vent hole 231 and the second vent hole 232 are both communicated between the mounting groove 21 and the adsorption groove 22, and the inner diameter of the first vent hole 231 is larger than that of the second vent hole 232; the air vent 31 is fixedly installed in the corresponding installation groove 21 in a sealing manner, the sealing valve body 32 is vertically movably arranged at the top of the air vent 31, the sealing valve body 32 is positioned right below the first air vent 231, and the sealing valve body 32 is provided with an air vent position and an air closing position along the vertical direction; when the sealing valve body 32 is located at the venting position, the sealing valve body 32 abuts against the first venting hole 231 and opens the venting nozzle 31; when the sealing valve body 32 is located at the air-closing position, the sealing valve body 32 is far away from the first ventilation hole 231 and seals the ventilation nozzle 31; the elastic member 33 abuts between the sealing valve body 32 and the vent nozzle 31, and the elastic member 33 constantly urges the sealing valve body 32 to move toward the vent position. After a workpiece to be machined is placed on the cover plate 20, the ventilation cavity is communicated with an external vacuum pumping device for vacuum pumping, the adsorption groove 22 covered by the workpiece is enabled to form a closed space with the adsorption groove 22 and the mounting groove 21, the sealing valve body 32 is not subjected to the acting force of downward pressing and is maintained at the ventilation position, the sealing valve body 32 abuts against the first ventilation hole 231 and opens the ventilation nozzle 31, namely, the part on the opposite workpiece can be adsorbed through the adsorption groove 22, and thus the workpiece is adsorbed and fixed. For the adsorption groove 22 which is not covered by the workpiece, the adsorption groove 22 is communicated with the external atmospheric pressure, because the external vacuum pumping device is used for pumping vacuum, the air pressure in the mounting groove 21 is lower than the air pressure on the adsorption groove 22, the external air can enter the mounting groove 21 from the first vent hole 231 and the second vent hole 232, and because the inner diameter of the first vent hole 231 is larger than that of the second vent hole 232, more air in the first vent hole 231 enters the mounting groove 21 than the second vent hole 232, so that the air pressure in the mounting groove 21 does not immediately become the same as the air pressure in the adsorption groove 22, and the gas entering from the first ventilation hole 231 will generate a downward pressing force on the sealing valve body 32 to push the sealing valve body 32 to move downward to the air-closed position, so that the sealing valve body 32 seals the ventilation nozzle 31 and does not suck the outside. Therefore, the air-tight component 30 can be automatically opened and closed without using rubber strips for sealing, when a workpiece is replaced or moved, the rubber strips do not need to be repeatedly assembled and disassembled, the use and the operation are simpler and faster, and the operation efficiency is greatly improved. Moreover, the structure is simple and reasonable.

The present application has been described in connection with the embodiments, but the present application is not limited to the embodiments disclosed above, and various modifications and equivalent combinations that are made according to the essence of the present application should be covered.

Claims

1. A suction cup device, comprising: the air exhaust device comprises a base, a cover plate and a plurality of air closing components, wherein the top of the base is provided with an air vent groove, the cover plate is fixedly covered on the top of the air vent groove in a closed manner, an air vent cavity is formed between the air vent groove and the bottom of the cover plate, and the air vent cavity is communicated with an external vacuum air exhaust device; the bottom of the cover plate is vertically upwards provided with a plurality of mounting grooves for the air-closing assemblies to be mounted in a one-to-one correspondence manner, and the lower ends of the mounting grooves are communicated with the ventilation cavity; the top of the cover plate is vertically provided with downward adsorption grooves which are opposite to the upper parts of the installation grooves one by one, and an isolation layer is formed between the installation grooves and the adsorption grooves which are opposite to the installation grooves; a first vent hole and a second vent hole are vertically formed in the isolation layer, the first vent hole and the second vent hole are both communicated between the mounting groove and the adsorption groove, and the inner diameter of the first vent hole is larger than that of the second vent hole; the gas block assembly includes: the vent nozzle is fixedly installed in the corresponding installation groove in a sealing mode, the sealing valve body is vertically movably arranged at the top of the vent nozzle and is located right below the first vent hole, and the sealing valve body is provided with a vent position and a gas-blocking position along the vertical direction; when the sealing valve body is positioned at the ventilation position, the sealing valve body is abutted against the first ventilation hole and opens the ventilation nozzle; when the sealing valve body is positioned at the air-closing position, the sealing valve body is far away from the first vent hole and seals the vent nozzle; the elastic piece is abutted between the sealing valve body and the vent nozzle, and the elastic piece constantly drives the sealing valve body to move towards the ventilation position.

2. The suction cup device as claimed in claim 1, wherein the sealing valve body comprises a sealing cap body, a guiding rod formed by extending the sealing cap body downwards, and a pushed cap body formed on the top of the sealing cap body, the guiding rod is inserted into the vent nozzle in a clearance fit manner, the sealing cap body can be opened and closed on the top of the vent nozzle, the pushed cap body is located right below the first vent hole, and the diameter of the pushed cap body is larger than the inner diameter of the first vent hole; the elastic piece is in compressed abutting connection between the air vent nozzle and the sealing cap body.

3. The suction cup apparatus of claim 2, wherein the air lock assembly further comprises: the first sealing ring is arranged at the top of the breather nozzle.

4. The suction cup device as set forth in claim 1, further comprising: and the filter screens correspond to the adsorption grooves one to one, and the filter screens are accommodated in the adsorption grooves.

5. The suction cup device as claimed in claim 1, wherein said air-passing grooves comprise connecting through grooves and a plurality of elongated air-passing through grooves, said air-passing through grooves are all communicated with said connecting through grooves, and lower ends of said air-passing nozzles are aligned with said connecting through grooves or said air-passing through grooves.

6. The suction cup device as claimed in claim 5, wherein the bottom of the base is formed with a plurality of air guide grooves communicating with each other and having openings facing downward, the suction cup device further comprising: the sealing bottom plates are in one-to-one correspondence with the air guide grooves, the sealing bottom plates are in one-to-one correspondence and hermetically cover the notches of the air guide grooves, one of the air guide grooves is communicated with the external vacuum air extractor, and the connecting through groove is communicated with one of the air guide grooves.

7. The suction cup device as set forth in claim 6, further comprising: the second sealing rings correspond to the air guide grooves one to one, mounting steps are further formed in the notches of the air guide grooves, and the second sealing rings are arranged between the corresponding mounting steps and the sealing bottom plate.

8. The suction cup device as set forth in claim 1, further comprising: and the third sealing ring is arranged between the base and the cover plate.

9. The suction cup device as set forth in claim 1, further comprising: the protective top plate is hermetically fixed at the top of the cover plate, and the protective top plate is provided with adsorption through holes which are communicated with the adsorption grooves in a one-to-one correspondence manner.

10. The suction cup device as claimed in claim 9, wherein an inner diameter of the suction through hole is smaller than an inner diameter of the suction groove.