CN110695720B

CN110695720B - Two-sided switching vacuum adsorption plate

Info

Publication number: CN110695720B
Application number: CN201911062290.1A
Authority: CN
Inventors: 杨海涛
Original assignee: Shenzhen Yuehaixiang Precision Technology Co ltd
Current assignee: Shenzhen Yuehaixiang Precision Technology Co ltd
Priority date: 2019-11-02
Filing date: 2019-11-02
Publication date: 2020-07-28
Anticipated expiration: 2039-11-02
Also published as: CN110695720A

Abstract

The invention provides a double-face switching vacuum adsorption plate which comprises a plate body, wherein the plate body comprises a first contact plate and a second contact plate, the front face and the back face of the first contact plate and the back face of the second contact plate are opposite, a cavity is arranged between the first contact plate and the second contact plate, five groups of large adsorption holes and a plurality of small adsorption holes are uniformly distributed in the center of the plate body, an adsorption switching device is fixed in the cavity, annular grooves are formed in the positions, corresponding to the large adsorption holes, of the first contact plate and the second contact plate, conical suckers are fixed on the inner walls of the large adsorption holes in a sealing mode, and when the outer walls of the conical suckers are completely attached to the inner walls of the grooves, the inner walls of the conical suckers are completely overlapped with the outer surfaces of. In the whole grabbing process of the workpiece, the workpiece is firstly in soft contact and then the adsorption force is increased, so that the workpiece can be effectively protected, the workpiece is prevented from being damaged, the adsorption effect is improved, the quality control of production is ensured, and the production efficiency is improved.

Description

Two-sided switching vacuum adsorption plate

Technical Field

The invention relates to the field of grabbing devices, in particular to a double-sided switching vacuum adsorption plate.

Background

In the industry snatchs the in-process, to some thinner dull and stereotyped structures, unable normal transport often needs vacuum adsorption device to utilize the vacuum adsorption principle to snatch the dull and stereotyped structure, then puts the assigned position.

The existing vacuum adsorption plate needs to be in complete contact with a workpiece, then enough vacuum adsorption force can be guaranteed to grab a flat plate structure, the flatness of the workpiece is guaranteed to be good, the surface parallelism of a vacuum adsorption device and the workpiece is guaranteed, and the operating environment is also subjected to higher requirements. Otherwise, the contact is considered incomplete, and the vacuum adsorption force is not uniform, so that the thinner workpiece is deformed and even cracked.

Meanwhile, the vacuum adsorption plate needs to be in hard contact with the workpiece, and if the vacuum adsorption plate is not operated properly, the workpiece can be directly damaged by pressure and is easily damaged by pressure, so that the yield of the product is low and the productivity is low.

The vacuum adsorption plate has small damage to the workpiece, but has insufficient adsorption force, can only hold the workpiece with light weight, has narrow application range and cannot meet the production requirement.

Disclosure of Invention

In order to solve the problems, the invention provides a double-side switching vacuum adsorption plate which is used for solving the problems, is suitable for a special working environment and can freely switch two sides for rapid transportation.

The invention provides a double-side switching vacuum adsorption plate, which comprises a plate body, wherein the plate body comprises a first contact plate and a second contact plate, the front surface and the back surface of the plate body are opposite, a cavity is arranged between the first contact plate and the second contact plate, five groups of large adsorption holes and a plurality of small adsorption holes are uniformly distributed on the first contact plate and the second contact plate, the five groups of large adsorption holes are arranged in the center of the plate body, an adsorption switching device is fixed in the cavity, a main air suction port, an auxiliary air suction port and an air inlet are arranged on one side of the plate body, the auxiliary air suction port is communicated with the cavity, the adsorption switching device comprises a sealing sleeve and a telescopic rod which are concentrically arranged with the large adsorption holes, sealing plates are fixed at two ends of the telescopic rod, a spring sleeved on the telescopic rod is connected between the two sealing plates, the diameter of each sealing plate is smaller than the inner diameter of the sealing sleeve, the seal cover passes through gas circuit and main extraction opening and air inlet intercommunication, annular groove has been seted up at the position that big adsorption port corresponds to first contact plate and second contact plate, the sealed conical suction cup that is fixed with of big adsorption port inner wall, when the recess inner wall is laminated completely to the conical suction cup outer wall, the outer surface of conical suction cup inner wall and first contact plate and second contact plate coincides completely.

Preferably, the plate body and the sealing sleeve are made of metal materials, and the sealing sleeve, the air passage and the cavity are sealed and isolated.

Preferably, the spring is in a compressed state when the two sealing plates are fully pressed against the first and second contact plates.

Preferably, the stiffness coefficient k of the spring is 0.2-0.5N/m.

Preferably, the diameter of the large adsorption hole is not less than 2 times of the diameter of the small adsorption hole.

Preferably, the material of the conical suction cup is polyurethane, nitrile rubber or vinyl-containing polymer.

Preferably, the maximum diameter of the conical suction cup in a natural state is not less than 3 times the diameter of the large adsorption hole.

The invention has the beneficial effects that:

1. according to the double-sided switching vacuum adsorption plate, the sealing plate is firmly pressed on the first contact plate and the second contact plate through the compression action of the spring, and the small adsorption holes cannot generate adsorption force on a workpiece when the sucker is not in contact with the workpiece, so that single-point or single-side adsorption force is generated like a traditional adsorption plate when grabbing operation is performed by mistake, and the workpiece is damaged;

2. according to the double-sided switching vacuum adsorption plate, the sucker is firstly squeezed to enable the sealing plate to be pushed open, when the sealing plate is pushed open, the diameter of the sealing plate is smaller than the inner diameter of the sealing sleeve, the large adsorption hole and the air path form the air flow path, so that adsorption force is generated on a workpiece attached to the sucker, the workpiece is completely attached to the conical sucker, the conical sucker is pressed into the groove, when the outer wall of the conical sucker is completely attached to the inner wall of the groove, the inner wall of the conical sucker is completely overlapped with the outer surface of the first contact plate or the outer surface of the second contact plate, the small adsorption hole is contacted with the workpiece, uniform adsorption force is applied to other positions of the workpiece, and the workpiece is more powerfully grabbed;

3. the sealing sleeve is communicated with the main pumping hole and the air inlet through an air path, the main pumping hole and the auxiliary pumping hole are both connected with the vacuum pumping machine, the air inlet is externally connected with a normally open valve, and when the sucker is in contact with a workpiece, the valve is closed to block an air inlet passage, so that the vacuum pumping machine is simple in structure, convenient to use and reliable in operation.

4. In the whole grabbing process of the workpiece, the soft contact is firstly carried out on the workpiece, and then the adsorption force is increased, so that the workpiece can be effectively protected, the workpiece is prevented from being damaged, the adsorption effect is improved, and the production quality control is ensured.

5. When the work pieces need to be exchanged and transferred between the two opposite work tables, the work pieces close to one of the work tables can be grabbed through the first contact plate, then the work pieces close to the other work table through the second contact plate are grabbed, and at the moment, the vacuum adsorption plate does not need to be turned over, so that double-sided switching vacuum adsorption grabbing can be realized, and the working efficiency is greatly saved.

Drawings

The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.

FIG. 1 is a schematic structural view of a double-sided switching vacuum absorption plate according to the present invention;

FIG. 2 is a front view of a double-sided switching vacuum absorption plate according to the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2

Fig. 5 is an enlarged view of a portion of fig. 3 from direction I.

Detailed Description

To further illustrate the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Example 1

As shown in fig. 1 to 5, a double-sided switching vacuum adsorption plate includes a plate body 1 made of a metal material, the plate body 1 includes a first contact plate 101 and a second contact plate 102 with opposite sides, a cavity 2 is disposed between the first contact plate 101 and the second contact plate 102 of the plate body 1, five groups of large adsorption holes 3 and a plurality of small adsorption holes 4 uniformly distributed are uniformly disposed on the first contact plate 101 and the second contact plate 102, the five groups of large adsorption holes 3 are disposed at the center of the plate body 1, an adsorption switching device 5 is fixed in the cavity 2, and a main suction opening 6, an auxiliary suction opening 7 and an air inlet 8 are disposed on one side of the plate body 1. Wherein, the auxiliary pumping hole 7 is communicated with the chamber 2, the adsorption switching device 5 comprises a sealing sleeve 501 and a telescopic rod 502 which are concentrically arranged with the large adsorption hole 3, the sealing sleeve 501 is made of metal material and has stronger strength, so as to prevent the chamber from deforming the sealing sleeve 501 due to stress generated by the chamber during vacuum pumping, the telescopic rod 502 adopts a shaft sleeve type structure, like an umbrella telescopic rod in the prior art, sealing plates 503 are fixed at both ends of the telescopic rod 502, a spring 504 which is sleeved on the telescopic rod 502 is connected between the two sealing plates 503, the outer surface of the sealing plate 503 completely covers the large adsorption hole 3, when the two sealing plates 503 are completely pressed on the first contact plate 101 and the second contact plate 102, the spring 504 is in a compression state, the sealing plate 50 is firmly pressed on the first contact plate 101 and the second contact plate 102 through the compression effect of the spring 504, the sealing sleeve 501 is communicated with the main pumping hole 6 and the air inlet 8, wherein the main extraction opening 6 and the auxiliary extraction opening 7 are both connected with a vacuum extractor, the air inlet 8 is externally connected with a normally open valve, when the sucker 10 contacts a workpiece, the valve is closed to seal the passage of the air inlet 8, which is beneficial to vacuuming the communication part of the whole air path 11, the sealing sleeve 501, the air path 11 and the cavity 2 are sealed and isolated, so that the main extraction opening 6 only vacuumizes the communication part of the air path 11 when extracting air without affecting the cavity 2, the first contact plate 1 and the second contact plate 2 are provided with an annular groove 9 at the position corresponding to the large adsorption hole 4, the inner wall of the large adsorption hole 4 is sealed and fixed with a conical sucker 10, the conical sucker 10 is made of polyurethane, nitrile rubber or vinyl-containing polymer, so that the conical sucker 10 is in soft contact with the workpiece, the workpiece is prevented from being crushed, and the maximum diameter of the conical sucker 10 in a natural state is not less than 3 times the diameter of the, the conical suction cup 10 is enabled to contact a workpiece in a larger area and generate a larger evacuation space, when the conical suction cup 10 is attached to the workpiece and is gradually extruded, the internal pressure is increased, so that the sealing plate 503 can be easily jacked open, when the sealing plate 503 is jacked open, because the stiffness coefficient k of the spring 504 is 0.2-0.5N/m, the compression force of the spring is small, the large adsorption hole 3 and the air passage 11 form an air flow passage, and the air flow of the whole air passage is vacuumized, the upward air flow of the workpiece can continuously generate jacking force on the sealing plate 503, so that the large adsorption hole 3 and the air passage 11 form a continuous effective air flow passage, and generate adsorption force on the workpiece attached to the suction cup 10, so that the workpiece is completely attached to the conical suction cup 10, and the conical suction cup 10 is pressed into the groove 9, when the outer wall of the conical suction cup 10 completely fits the inner wall of the groove 9, the outer wall of the conical suction cup 10 and the outer surface of the first contact plate 101 or the outer surface of the second contact plate 102 completely coincide, the small adsorption hole 4 is in contact with a workpiece, uniform adsorption force is applied to other positions of the workpiece, the diameter of the large adsorption hole 3 is larger than or equal to 2 times the diameter of the small adsorption hole 4, the adsorption force of the small adsorption hole 4 is stronger, heavy workpieces can be effectively grabbed, the adsorption force is increased after soft contact is performed on the workpieces due to the fact that the whole adsorption process of the workpieces is conducted, the workpiece can be effectively protected, damage to the workpieces is avoided, the adsorption effect is improved, and quality control of production is guaranteed.

Example 2

When two relative workstations need be in the work piece interchange when transporting, for example the glass of glass factory vertically puts, when the different glass of quality needs to be changed, can be close to the work piece that closes one of them workstation through first contact plate 101 and snatch, then snatch near the work piece of another workstation through second contact plate 102, need not overturn the vacuum adsorption board this moment, can realize two-sided switching vacuum adsorption and snatch, saved work efficiency greatly.

As described above, it will be apparent to those skilled in the art that other various changes and modifications may be made based on the technical solution and concept of the present invention, and all such changes and modifications are intended to fall within the scope of the appended claims.

Claims

1. A double-side switching vacuum adsorption plate comprises a plate body (1), and is characterized in that the plate body (1) comprises a first contact plate (101) and a second contact plate (102) with opposite front and back surfaces, a cavity (2) is arranged between the first contact plate (101) and the second contact plate (102) of the plate body (1), five groups of large adsorption holes (3) and a plurality of small adsorption holes (4) are uniformly distributed on the first contact plate (101) and the second contact plate (102), the five groups of large adsorption holes (3) are formed in the center of the plate body (1), an adsorption switching device (5) is fixed in the cavity (2), a main air suction opening (6), an auxiliary air suction opening (7) and an air inlet (8) are formed in one side of the plate body (1), the auxiliary air suction opening (7) is communicated with the cavity (2), the adsorption switching device (5) comprises a sealing sleeve (501) and a telescopic rod (502) which are concentrically arranged with the large adsorption holes (3), the telescopic rod (502) is fixed with sealing plates (503) at two ends, a spring (504) sleeved on the telescopic rod (502) is connected between the two sealing plates (503), when the two sealing plates (503) are completely pressed on the first contact plate (101) and the second contact plate (102), the spring (504) is in a compression state, the diameter of the sealing plate (503) is smaller than the inner diameter of the sealing sleeve (501), the outer surface of the sealing plate (503) completely covers the large adsorption hole (3), the sealing sleeve (501) is communicated with the main suction opening (6) and the air inlet (8) through an air passage (11), the first contact plate (101) and the second contact plate (102) are provided with an annular groove (9) at a position corresponding to the large adsorption hole (4), the inner wall of the large adsorption hole (4) is sealed and fixed with a conical suction cup (10), and when the outer wall of the conical suction cup (10) completely fits the inner wall of the groove (9), the inner wall of the conical sucker (10) is completely overlapped with the outer surfaces of the first contact plate (101) and the second contact plate (102), the large adsorption hole (3) is firstly contacted with a workpiece to realize soft contact, and then the workpiece is grabbed by increasing the adsorption force through the small adsorption hole (4).

2. A double-sided switching vacuum adsorption plate as claimed in claim 1, wherein the plate body (1) and the sealing sleeve (501) are made of metal, and the sealing sleeve (501), the air passage (11) and the cavity (2) are sealed and isolated.

3. A two-sided switching vacuum suction plate according to claim 1, wherein the stiffness coefficient k of the spring (504) is 0.2-0.5N/m.

4. A double-sided switching vacuum adsorption plate according to claim 1, characterized in that the diameter of the large adsorption hole (3) is not less than 2 times the diameter of the small adsorption hole (4).

5. A two-sided switching vacuum suction plate according to claim 1, wherein the material of the conical suction cup (10) is polyurethane, nitrile rubber or vinyl-containing polymer.

6. A double-sided switching vacuum suction plate according to claim 1, wherein the maximum diameter of the conical suction cup (10) in the natural state is not less than 3 times the diameter of the large suction hole (3).