CN114572686A

CN114572686A - Vacuum material taking device and material taking method

Info

Publication number: CN114572686A
Application number: CN202210406003.XA
Authority: CN
Inventors: 王真立; 金鑫; 陈海鹏
Original assignee: Hitop Industrial Holdings Co ltd
Current assignee: Hitop Industrial Holdings Co ltd
Priority date: 2022-04-18
Filing date: 2022-04-18
Publication date: 2022-06-03
Anticipated expiration: 2042-04-18
Also published as: CN114572686B

Abstract

The invention relates to the field of material taking equipment, in particular to a vacuum material taking device and a material taking method, wherein the vacuum material taking device comprises a sucker, and the sucker comprises an adsorption end and a side wall which are attached to the surface of a material; the adsorption end and the side wall form an adsorption cavity; the side wall comprises a telescopic section; the volume of the adsorption cavity is changed when the telescopic section is telescopic; the adsorption end is made of elastic material; the air flow cutting device is connected with the sucker and used for cutting off or communicating the adsorption cavity with the external atmospheric pressure. The vacuum material taking device provided by the invention can realize the adsorption of materials without loading a vacuum system, reduces the manufacturing cost and the maintenance cost, and has the advantages of simple and compact structure, small volume and wide application range.

Description

Vacuum material taking device and material taking method

Technical Field

The invention relates to the field of material taking equipment, in particular to a vacuum material taking device and a material taking method.

Background

In the CNC course of working, need load extracting device on manipulator equipment and absorb and shift the material. The existing material taking device generally comprises a magnetic adsorption type material and a vacuum adsorption type material, wherein an adsorption object of the magnetic adsorption type material is required to be a material with certain magnetism, so that the adsorption object has larger limitation; the general vacuum adsorption type material taking device needs to be loaded with vacuum systems such as a vacuum generator and a vacuum pump to manufacture a vacuum environment, and the additional vacuum system can increase the manufacturing cost and the maintenance cost of the material taking device.

Disclosure of Invention

In order to solve the problem that a vacuum system is required to be loaded on a vacuum adsorption type material taking device in the prior art, the invention provides the vacuum material taking device without the need of loading the vacuum system and a material taking method using the vacuum material taking device.

A vacuum material taking device comprises a sucker, wherein the sucker comprises an adsorption end and a side wall, wherein the adsorption end is attached to the surface of a material; the adsorption end and the side wall form an adsorption cavity;

the side wall comprises a telescopic section; the volume of the adsorption cavity is changed when the telescopic section is telescopic; the adsorption end is made of elastic material;

the air flow cutting device is connected with the sucker and used for cutting off or communicating the adsorption cavity with the external atmospheric pressure.

Further, the airflow cutoff device includes:

the cylinder barrel is internally provided with a first accommodating cavity, a first air passage communicated with the first accommodating cavity and the adsorption cavity, and a second air passage communicated with the first accommodating cavity and the external atmospheric pressure; the first air passage and the second air passage are staggered in the axial direction of the first accommodating cavity;

the firing pin is movably arranged in the first accommodating cavity along the axial direction of the first accommodating cavity and comprises a first needle body and a second needle body; the first needle body is attached to the inner wall of the first accommodating cavity to form an air seal, and the second needle body forms a gap with the inner wall of the first accommodating cavity;

and the driving device is connected with the firing pin and drives the firing pin to move along the axial direction of the first accommodating cavity so as to cut off or communicate the first air passage and the second air passage.

Further, the driving device includes:

a main shaft;

the cylindrical pin is fixedly connected with the firing pin;

the rotating plate is fixedly connected with the main shaft and rotates along with the main shaft; the rotating plate is provided with a notch for clamping the cylindrical pin.

Furthermore, a second accommodating cavity for accommodating the rotating plate is arranged in the cylinder barrel, and a kidney-shaped hole for communicating the first accommodating cavity with the second accommodating cavity is formed in the cylinder barrel; the kidney-shaped hole extends along the axial direction of the first accommodating cavity and is used for accommodating the cylindrical pin to pass through and guiding the movement of the cylindrical pin.

Further, the airflow cutoff device comprises a sleeve with one open end; the sleeve is fixedly arranged in the first accommodating cavity and accommodates the second needle body to be inserted; the second needle body is attached to the inner wall of the sleeve to form air seal; a third air passage communicated with the first accommodating cavity and the external atmospheric pressure is arranged at the end part of the first accommodating cavity close to the first needle body; and a fourth air channel penetrating along the axial direction of the firing pin is arranged at the center of the firing pin.

Furthermore, a first sealing ring is embedded in the inner wall of the sleeve and used for hermetically sealing the sleeve and the second needle body; and a second sealing ring is embedded in the inner wall of the first accommodating cavity and is positioned between the first air passage and the second air passage and used for sealing the first needle body and the first accommodating cavity when the striker cuts off the first air passage and the second air passage.

Specifically, the vacuum suction cup comprises four suction cups which are arranged in a rectangular array, and two first cavities which are parallel to each other; every two suckers form a group, and the adsorption cavities of the suckers in the same group are communicated with the first air passage through a fifth air passage; firing pins which are arranged in opposite axial directions are respectively arranged in the two first cavities; the rotating plate is provided with notches which are symmetrically arranged along the axis direction of the main shaft; the two firing pins are fixedly connected with cylindrical pins clamped by corresponding notches respectively.

Furthermore, two opposite side surfaces of the cylinder barrel are fixedly connected with positioning pins respectively, and the positioning pins are used for positioning when the suckers are adsorbed and guiding when the telescopic sections stretch out and draw back.

Specifically, the telescopic section comprises a corrugated structure folded along the axial direction of the sucker.

A material taking method using any one of the vacuum material taking devices comprises the following steps:

the sucker moves to the upper part of the material, and the air flow cutting device cuts off the adsorption cavity and the external atmospheric pressure;

the sucker moves downwards until the adsorption end is attached to the surface of the material, and the sucker continues to move downwards until the telescopic section is shortened;

the sucker moves upwards to enable the telescopic section to extend under the gravity of the sucker and the material, so that the vacuum adsorption of the material is formed in the adsorption cavity;

the material is moved to a designated position by the sucker, and the material is released by communicating the adsorption cavity with the external atmospheric pressure through the airflow cutting device.

Another material taking method using any one of the above vacuum material taking devices comprises the following steps:

the sucker moves to the upper part of the material and is communicated with the adsorption cavity and the external atmospheric pressure through the airflow cutting device;

driving the striker to move in the axial direction of the first accommodating chamber to cut off the first air passage and the second air passage;

Has the advantages that: according to the vacuum material taking device disclosed by the invention, the volume of the adsorption cavity is reduced by compressing the telescopic section when the sucker is moved downwards, and the volume of the adsorption cavity is increased by stretching the telescopic section by utilizing the gravity of the sucker and the gravity of materials when the sucker is moved upwards, so that a negative pressure environment is produced in the adsorption cavity, the sucker adsorbs the materials, and the communication state of the adsorption cavity and the external atmospheric pressure is changed by the airflow cutting device to release the materials. And a complex vacuum system is not needed in the material taking process, so that the manufacturing cost and the maintenance cost are reduced. The air flow cutting device can switch the communication state of the adsorption cavity and the external atmospheric pressure only by rotating the main shaft, and the operation is convenient and quick; and simple structure, compactness, and need not vacuum system, make extracting device whole small, application scope is extensive.

Drawings

FIG. 1 is a schematic view of the overall structure of a material extracting apparatus according to the present invention;

FIG. 2 is a side schematic view of a material extraction apparatus of the present invention;

FIG. 3 is a cross-sectional view taken along A-A in FIG. 2 when the extracting apparatus is in a state where the adsorption chamber is in communication with the outside atmosphere;

FIG. 4 is a cross-sectional view taken along A-A of FIG. 2 when the extracting apparatus is in a state where the adsorption chamber is disconnected from the outside atmosphere;

FIG. 5 is a schematic view of the engagement of the drive assembly with the striker;

FIG. 6 is a schematic view of the cylinder barrel;

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 6;

fig. 8 is a cross-sectional view taken along line C-C of fig. 6.

Reference numerals: 1. a suction cup; 2. an airflow cut-off device; 3. a cylinder barrel; 4. a striker; 5. a drive device; 6. a cylinder cover; 7. a connecting shaft; 8. an anti-rotation plate;

11. an adsorption end; 12. a side wall; 13. an adsorption chamber; 14. a telescopic section;

21. a sleeve; 22. a third air passage; 23. a first seal ring; 24. a second seal ring;

31. a first accommodating chamber; 32. a first air passage; 33. a second air passage; 34. a second accommodating cavity; 35. a kidney-shaped hole; 36. a fifth air passage;

41. a first needle body; 42. a second needle body; 43. a fourth air passage;

51. a main shaft; 52. a cylindrical pin; 53. a rotating plate; 54. a notch.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

This embodiment provides a vacuum extracting device, and this extracting device is used for getting some materials that surface roughness is low, and the surface of these materials can form airtight with the adsorption end 11 of sucking disc 1. It should be noted that the materials referred to in this embodiment include, but are not limited to, glass, LCD screen, metal material, etc.

Referring to fig. 1, a vacuum material taking device comprises a suction cup 1 and an airflow cutting device 2, wherein the suction cup 1 comprises a suction end 11 attached to the surface of a material and a side wall 12 integrally formed with the suction end 11; the adsorption end 11 and the side wall 12 enclose an adsorption cavity 13; the side wall 12 comprises a telescopic section 14, the telescopic section 14 is telescopic along the axial direction of the side wall 12, and the volume of the adsorption cavity 13 can be changed during the telescopic process; the adsorption end 11 is made of an elastic material, can be elastically deformed, and forms an air seal when being attached to the surface of a material. The suction end 11 may be made of a rubber material or other material capable of elastic deformation. The airflow cutting device 2 is connected with the sucker 1 and is used for cutting off or communicating the adsorption cavity 13 with the external atmospheric pressure.

In the vacuum material taking device, in the material taking process, the sucker 1 is moved to the position above the material, the airflow cutting device 2 is switched to cut off the adsorption cavity 13 and the external atmospheric pressure, then the sucker 1 is moved downwards to enable the sucker 1 to be attached to the surface of the material and form an airtight seal, and at the moment, the adsorption cavity 13 is in an airtight seal state; the sucker 1 is continuously pressed downwards to compress the telescopic section 14 so that the volume of the adsorption cavity 13 is reduced, and in the compression process, because the adsorption cavity 13 is in an airtight sealing state, the internal gas can only overflow from the joint of the adsorption end 11 and the material; when exhausting, the gas extrudes the adsorption end 11 to make the adsorption end 11 generate certain elastic deformation, and after the sucker 1 stops moving, the adsorption end 11 recovers quickly to make the adsorption cavity 13 recover the air-tight state again. Then move sucking disc 1 upwards, flexible section 14 is elongated because of the gravity of sucking disc 1 self and material this moment, forms the negative pressure in adsorbing chamber 13 to the assurance is to the stable absorption of material. And finally, after the materials are transferred to the designated position, the materials are switched to be communicated with the adsorption cavity 13 and the external atmospheric pressure by using the airflow cutting device 2, so that the materials are released. In the material taking process, an additional vacuum system is not required to be loaded, the manufacturing cost and the maintenance cost of the material taking device are reduced, and the application range is widened.

As a further improvement of this embodiment, in order to make the adsorption end 11 better form an airtight seal after being attached to the surface of the material, the contact surface of the adsorption end 11 and the surface of the material is a smooth annular plane.

Particularly, flexible section 14 includes a ripple structure along the folding of sucking disc 1 axial direction for flexible section 14 can be compressed and reduce the volume of adsorbing the chamber 13 when sucking disc 1 moves down, and flexible section 14 can stretch and increase the volume of adsorbing the chamber 13 when sucking disc 1 moves up, is convenient for build negative pressure environment in adsorbing the chamber 13.

In the present embodiment, the airflow cut-off device 2 is used to cut off or connect the adsorption cavity 13 to the external atmospheric pressure, so a general switching device for switching the flow path of the airflow should fall within the scope of the present invention.

A particular air flow cut-off device 2 is provided in the present embodiment with particular advantages, and in particular, as shown in fig. 3, the air flow cut-off device 2 comprises a cylinder 3, a striker 4 and a drive 5. A first accommodating cavity 31, a first air passage 32 communicated with the first accommodating cavity 31 and a second air passage 33 communicated with the first accommodating cavity 31 and the external atmospheric pressure are arranged in the cylinder barrel 3; the first air passage 32 and the second air passage 33 are staggered in the axial direction of the first accommodation chamber 31. The striker 4 is movably disposed inside the first accommodating chamber 31 along the axial direction of the first accommodating chamber 31, and the striker 4 includes a first needle 41 and a second needle 42, wherein the first needle 41 is attached to the inner wall of the first accommodating chamber 31 to form an airtight seal, and the second needle 42 forms a gap with the inner wall of the first accommodating chamber 31. The driving device 5 is connected with the striker 4, the striker 4 is driven by the driving device 5 to move along the axial direction of the first accommodating cavity 31, and the first air passage 32 and the second air passage 33 are cut off or communicated during the movement.

Referring to fig. 4, when the first needle body 41 of the striker 4 moves to block the second air passage 33, the first accommodating cavity 31 and the external atmospheric pressure are cut off, at this time, the first air passage 32 and the second air passage 33 are in a cut-off state, and the adsorption cavity 13 is in an air-tight state after the adsorption end 11 of the suction cup 1 is attached to the material. Referring to fig. 3, when the first needle 41 of the striker 4 moves to no longer block the second air passage 33, the first air passage 32, the first accommodating chamber 31, and the second air passage 33 are in a communicating state, and the adsorption chamber 13 is no longer in an airtight state. The air flow cutting device 2 is used for controlling the on-off between the adsorption cavity 13 and the external atmospheric pressure, is simple and reliable, is easy to realize, and simplifies the control complexity.

As a further modification of the present embodiment, with continued reference to fig. 3, the airflow cutoff device 2 includes a sleeve 21 having one end opened; the sleeve 21 is fixedly arranged in the first accommodating cavity 31 and accommodates the insertion of the second needle body 42; the second needle body 42 is respectively attached to the inner part of the sleeve 21 to form air seal; the end part of the first accommodating cavity 31 close to the first needle body 41 is provided with a third air passage 22 for communicating the first accommodating cavity 31 with the external atmospheric pressure; the center of the striker 4 is provided with a fourth air passage 43 penetrating in the axial direction thereof. The air seal is formed between the sleeve 21 and the second needle body 42, so that the air seal of the adsorption cavity 13 in a sealed state is ensured, and meanwhile, the air at the two ends of the firing pin 4 is discharged through the third air passage 22 and the fourth air passage 43, so that the firing pin 4 can smoothly move along the axial direction of the first accommodating cavity 31.

As a further improvement of the present embodiment, with continued reference to fig. 3, a first sealing ring 23 is embedded in the inner wall of the sleeve 21 for hermetically sealing the sleeve 21 and the second needle body 42; the inner wall of the first accommodating cavity 31 is embedded with a second sealing ring 24, and the second sealing ring 24 is positioned between the first air passage 32 and the second air passage 33. When the airflow cutoff device 2 cuts off the adsorption cavity 13 from the outside atmospheric pressure, the first needle 41 moves against the second seal ring 24, and the air tightness between the second needle 42 and the first accommodation cavity 31 is further improved. When the airflow cut-off device 2 communicates the adsorption chamber 13 with the external atmospheric pressure, the first needle 41 moves to be separated from the second seal ring 24.

Specifically, referring to fig. 5, the driving device 5 includes a main shaft 51, a cylindrical pin 52 and a rotating plate 53, and the cylindrical pin 52 is inserted into the second needle body 42 to drive the striker 4 to move along the axial direction of the first accommodating cavity 31. The spindle 51 is inserted into the rotating plate 53 to drive the rotating plate 53 to rotate. The side of the rotating plate 53 is provided with a notch 54 for holding the cylindrical pin 52. When the rotating plate 53 rotates, the driving cylindrical pin 52 moves, thereby driving the striker 4 to move.

The rotation of the main shaft 51 is converted into the linear motion of the striker 4 by the cooperation of the rotation plate 53 and the cylindrical pin 52, thereby shutting off or communicating the suction chamber 13 with the external atmospheric pressure.

As a further improvement of the present embodiment, with continued reference to fig. 3, a second accommodating chamber 34 for accommodating a rotating plate 53 is further provided in the cylinder 3, the second accommodating chamber 34 is located above the first accommodating chamber 31, and a waist-shaped hole 35 is provided between the first accommodating chamber 31 and the second accommodating chamber 34; the kidney-shaped hole 35 extends in the axial direction of the first accommodating chamber 31, and is used for accommodating the cylindrical pin 52 and guiding the movement of the cylindrical pin 52, so that the cylindrical pin 52 is limited to move only in the axial direction of the first accommodating chamber 31.

The plunger 4 is driven to move through the cooperation of the cylindrical pin 52 and the rotating plate 53, so that the control mode is simpler; the rotating plate 53 is arranged in the second accommodating cavity 34, and the rotating plate 53 is driven by the spindle 51 to rotate, so that the whole structure of the material taking device is more compact.

Specifically, there is a cylinder head 6 at the top of the cylinder barrel 3 through bolted connection, be equipped with the through-hole that holds main shaft 51 and pass in the middle of the cylinder head 6, main shaft 51 passes through the through-hole and extends outward to there is a connecting axle 7 through the latch connection, it is rotatory to drive main shaft 51 by connecting axle 7. The spindle 51 is extended by the connecting shaft 7 so that the spindle 51 extends outward of the cylinder 3. The movement of the striker 4 can be controlled either by manually rotating the connecting shaft 7 or by rotating the connecting shaft 7 by a motor. The main shaft 51 is further bolted with an anti-rotation plate 8 rotating along with the main shaft 51, the anti-rotation plate 8 is located above the cylinder cover 6 and shields the through hole, the second accommodating cavity 34 is protected, and sundries are prevented from invading into the cylinder barrel 3.

As a further improvement of this embodiment, referring to fig. 1, the vacuum material taking device disclosed in this embodiment includes four suckers 1, and the four suckers 1 are arranged in a rectangular array and are respectively fixedly connected to the cylinder 3. The inside of cylinder 3 is equipped with two first cavitys that are parallel to each other, and sucking disc 1 divide into two a set ofly, and the absorption chamber 13 in the same group sucking disc 1 communicates with a first cavity. For example, referring to fig. 2, two suction cups 1 on the same side are in one group, and referring to fig. 7, the suction cups 1 in the same group are communicated through a fifth air passage 36 extending in the horizontal direction, and the fifth air passage 36 is staggered and communicated with the first air passage 32 extending in the vertical direction. The two second cavities are respectively provided with the firing pins 4, and as shown in fig. 5, the axial extension directions of the two firing pins 4 are opposite; the rotating plate 53 is provided with two notches 54 symmetrically arranged along the axial direction of the main shaft 51, and the two strikers 4 are fixedly connected with cylindrical pins 52 clamped by the corresponding notches 54. When the main shaft 51 is controlled to rotate, the communication state of the adsorption cavities 13 of the four suckers 1 and the external atmospheric pressure can be synchronously controlled, and materials can be synchronously adsorbed or released. The material can be stably adsorbed by the four suckers 1, and the four suckers 1 are synchronously controlled by the main shaft 51, so that the material adsorption synchronism is ensured, and the whole structure of the adsorption device is more compact and the volume is smaller.

In order to facilitate the processing of each air passage, each air passage is in a penetrating state and is closed at the closed end thereof by a small ball.

As a further improvement of this embodiment, two opposite side surfaces of the cylinder 3 are fixedly connected with positioning pins respectively, positioning holes corresponding to the positioning pins are arranged on the material bearing platform, the suction cup 1 is positioned on one hand through the positioning pins and the positioning holes, and the suction cup 1 is pressed down to be guided on the other hand, so that the suction cup 1 moves in the vertical direction, and the adhesion between the suction cup 1 and the material is ensured.

Example 2

The embodiment provides a material taking method using the vacuum material taking device in embodiment 1, which includes the following steps:

firstly, the sucker 1 moves to the position above the material, and the air flow cutting device 2 cuts off the adsorption cavity 13 from the external atmospheric pressure;

secondly, the sucker 1 moves downwards until the adsorption end 11 is attached to the surface of the material, and the sucker 1 continues to move downwards until the telescopic section 14 is shortened;

thirdly, the sucker 1 moves upwards to enable the telescopic section 14 to extend under the gravity of the sucker and the material, so that the vacuum adsorption material is formed in the adsorption cavity 13;

and fourthly, the material is moved to a designated position by the sucker 1, and the adsorption cavity 13 is communicated with the external atmospheric pressure through the airflow cutting device 2 to release the material.

Specifically, in the first step, when the airflow cutoff device 2 is used to cut off the adsorption cavity 13 from the external atmospheric pressure, the connecting shaft 7 is driven to rotate, so as to sequentially drive the main shaft 51 and the rotating plate 53 to rotate, and the driving striker 4 moves to the first needle 41 to block the second air passage 33 and abuts against the second sealing ring 24, so as to seal the first needle 41 and the first accommodating cavity 31, thereby cutting off the communication between the adsorption cavity 13 and the external atmospheric pressure.

In the second step, when the suction cup 1 is moved to the state that the adsorption end 11 is attached to the surface of the material, an airtight seal is formed between the adsorption end 11 and the material, and at the moment, the adsorption cavity 13 is in an airtight state because the communication between the adsorption cavity 13 and the external atmospheric pressure is cut off. When the sucker 1 continues to move downwards, the telescopic section 14 is pressed to be shortened, at the moment, the volume in the adsorption cavity 13 is reduced, and the internal gas is discharged outwards from the space between the adsorption end 11 and the binding surface of the material; when the air is discharged outwards, the adsorption end 11 is extruded to enable the adsorption end 11 to generate certain elastic deformation, and after the sucker 1 stops moving, the adsorption end 11 is quickly restored to enable the adsorption cavity 13 to recover the air-tight state again.

In the fourth step, when the airflow cut-off device 2 is used to communicate the adsorption cavity 13 with the external atmospheric pressure, the connecting shaft 7 is driven to rotate reversely, so as to sequentially drive the main shaft 51 and the rotating plate 53 to rotate reversely, and the firing pin 4 is driven to move reversely to the first needle 41 and no longer block the second air passage 33, so that the adsorption cavity 13 is restored to be communicated with the external atmospheric pressure.

Example 3

The embodiment additionally provides a material taking method using the vacuum material taking device in embodiment 1, which comprises the following steps:

firstly, the sucker 1 moves to the position above the material, and the adsorption cavity 13 is communicated with the external atmospheric pressure through the airflow cutting device 2;

third, the striker 4 is driven to move in the axial direction of the first accommodation chamber 31 to cut off the first air passage 32 and the second air passage 33;

fourthly, the sucker 1 moves upwards to enable the telescopic section 14 to extend under the gravity of the sucker and the material, so that the vacuum adsorption material is formed in the adsorption cavity 13;

fifthly, the material is moved to a designated position by the sucker 1, and the air flow cutting device 2 is used for communicating the adsorption cavity 13 with the external atmospheric pressure to release the material.

Specifically, in the second step, in the process of pressing down the suction cup 1, the adsorption cavity 13 is in a communication state with the external atmospheric pressure, the airflow in the adsorption cavity 13 is discharged outwards through the second air passage 33, at this time, the adsorption end 11 does not need to be pressed, and the adsorption end 11 keeps airtight with the surface of the material.

In the third step, the sucker 1 is stopped moving, so that the firing pin 4 moves towards the direction of the sleeve 21 until the first needle body 41 blocks the second air passage 33 and abuts against the second sealing ring 24, and the first needle body 41 and the first accommodating cavity 31 are sealed; during the movement of the striker 4, the air in the sleeve 21 passes through the fourth air passage 43 and the third air passage 22 and is exhausted outwards, and the air between the first sealing ring 23 and the second sealing ring 24 is exhausted outwards by pressing the adsorption end.

The process of the fourth step and the fifth step is the same as the principle in embodiment 2, and is not described again in this embodiment.

According to the method provided by the embodiment, in the process of sucking materials, only the gas between the first sealing ring 23 and the second sealing ring 24 needs to be discharged by extruding the adsorption end 13, the exhaust amount is small, the deformation amount and the deformation time of the adsorption end 13 are small, the quick recovery of the adsorption end 13 and the air tightness between the surface of the materials are ensured, and the service life of the sucker is prolonged.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several equivalent substitutions or obvious modifications can be made without departing from the spirit of the invention, and all the properties or uses are considered to be within the scope of the invention.

Claims

1. A vacuum material taking device comprises a sucker, wherein the sucker comprises an adsorption end and a side wall, wherein the adsorption end is attached to the surface of a material; the adsorption end and the side wall form an adsorption cavity; the method is characterized in that:

2. The vacuum extractor as set forth in claim 1 wherein said airflow shutoff device includes:

3. A vacuum extractor apparatus as claimed in claim 2, wherein said drive means includes:

a main shaft;

the cylindrical pin is fixedly connected with the firing pin;

4. The vacuum material taking device according to claim 3, wherein the cylinder barrel is provided with a second accommodating cavity for accommodating the rotating plate and a kidney-shaped hole for communicating the first accommodating cavity with the second accommodating cavity; the kidney-shaped hole extends along the axial direction of the first accommodating cavity and is used for accommodating the cylindrical pin to pass through and guiding the movement of the cylindrical pin.

5. A vacuum extractor apparatus as claimed in claim 2 wherein said air flow shutoff device includes an open ended sleeve; the sleeve is fixedly arranged in the first accommodating cavity and accommodates the second needle body to be inserted; the second needle body is attached to the inner wall of the sleeve to form air seal; a third air passage communicated with the first accommodating cavity and the external atmospheric pressure is arranged at the end part of the first accommodating cavity close to the first needle body; and a fourth air channel penetrating along the axial direction of the firing pin is arranged at the center of the firing pin.

6. The vacuum material taking device as claimed in claim 5, wherein a first sealing ring is embedded in the inner wall of the sleeve for hermetically sealing the sleeve and the second needle body; and a second sealing ring is embedded in the inner wall of the first accommodating cavity and is positioned between the first air passage and the second air passage and used for sealing the first needle body and the first accommodating cavity when the striker cuts off the first air passage and the second air passage.

7. The vacuum material taking device as claimed in claim 3, wherein the vacuum material taking device comprises four suckers arranged in a rectangular array, and two first cavities which are parallel to each other; every two suckers form a group, and the adsorption cavities of the suckers in the same group are communicated with the first air passage through a fifth air passage; firing pins which are arranged in opposite axial directions are respectively arranged in the two first cavities; the rotating plate is provided with notches which are symmetrically arranged along the axis direction of the main shaft; the two firing pins are fixedly connected with cylindrical pins clamped by corresponding notches respectively.

8. The vacuum material taking device according to claim 2, wherein two opposite side surfaces of the cylinder barrel are fixedly connected with positioning pins respectively, and the positioning pins are used for positioning when the suction disc is adsorbed and guiding when the telescopic section is stretched.

9. A material taking method using the vacuum material taking device as claimed in any one of claims 1 to 8, characterized by comprising the following steps:

10. A material taking method using the vacuum material taking device as claimed in any one of claims 2 to 8, characterized by comprising the following steps: