CN214367962U

CN214367962U - Flexible vacuum chuck

Info

Publication number: CN214367962U
Application number: CN202120244474.6U
Authority: CN
Inventors: 陈佳
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2021-10-08
Anticipated expiration: 2031-01-28

Abstract

The utility model discloses a flexible vacuum chuck, which relates to the technical field of mechanical production and detection, and comprises a chuck main body, wherein a fluid channel, an airflow channel and a plurality of functional units are arranged in the chuck main body; the fluid passage communicates with an external fluid inlet valve: the air flow channel is communicated with an external air pipe inlet valve. The workpiece is placed on the sucker, the movable ejector rods of the functional units at the corresponding positions can be pressed to a certain depth according to the shape of the workpiece, and then a plurality of irregular surfaces of the special-shaped workpiece are supported, so that the sucker can be matched with workpieces in various shapes; the piston of the functional unit is pushed by fluid, the movable ejector rod of the functional unit can be pressed and fixed, the movable ejector rod does not move up and down after a workpiece is placed, air is sucked by external air suction equipment, and a workpiece suction port forms negative pressure to suck and fix the workpiece.

Description

Flexible vacuum chuck

Technical Field

The utility model relates to a mechanical production and detection technical field particularly, relate to a flexible vacuum chuck.

Background

When machinery is produced, the situation that irregular special-shaped products are processed is often met, a special clamp is often required to be manufactured to fix the special-shaped products when one special-shaped product is processed, and after the special-shaped products are processed through the later procedures, the special clamp cannot be reused due to the change of the shape, so that the special clamp is required to be manufactured again to clamp and fix the special clamp for the later procedures, production and detection are performed, and the production cost of the products is greatly increased.

SUMMERY OF THE UTILITY MODEL

The utility model provides a flexible vacuum chuck, it can alleviate above-mentioned problem.

In order to alleviate the above-mentioned problem, the utility model discloses the technical scheme who takes as follows:

a flexible vacuum sucker is characterized by comprising a sucker main body, wherein a fluid channel, an airflow channel and a plurality of functional units are arranged in the sucker main body; a fluid inlet pipe with an air escape valve and an air pipe with an air escape valve are arranged outside the sucker main body; the fluid channel is communicated with the fluid inlet pipe of the air escape valve; the air channel is communicated with an air pipe of the air escape valve;

the functional unit comprises a mandril telescopic hole, a movable mandril, a piston and a fluid pressure chamber which are vertically arranged; the lower end of the mandril telescopic hole is closed, and the upper end of the mandril telescopic hole is an open hole extending to the top of the sucker main body; the piston is arranged in the fluid pressure chamber and can move in a reciprocating mode along the chamber length direction, the first end of the piston is communicated with the fluid channel, and the second end of the piston vertically faces the movable ejector rod so as to be used for compressing and fixing the movable ejector rod; the movable ejector rod is axially arranged in the ejector rod telescopic hole and can move up and down; the movable ejector rod is of a through pipe structure, the top of the movable ejector rod penetrates out of the upper end of the telescopic hole of the ejector rod, and the top opening of the movable ejector rod is used as a workpiece suction port; the piston is arranged in the fluid pressure chamber and is arranged on the side surface of the movable ejector rod; the lower end of the movable ejector rod is provided with an ejector rod pressure spring; the inner wall of the upper opening of the mandril telescopic hole is sealed with the outer wall of the movable mandril through a mandril sealing ring; the workpiece suction port, the part of the mandril telescopic hole, which is provided with the mandril pressure spring, and the airflow channel are communicated in sequence.

In a preferred embodiment of the present invention, the movable ejector rod is internally provided with a sponge sealing ring, a workpiece suction port, a sealing ball, a ball compression spring, a filter pad, a piston body spring, and a second hole step surface for blocking an external air flow, which are abutted step by step from top to bottom; the sponge sealing ring is arranged on the top of the movable ejector rod and is arranged at the periphery of the workpiece suction port; the workpiece suction port is a conical hole with a large lower end and a small upper end: the sealing ball is arranged between the workpiece suction port and the ball pressure spring; the elasticity of the ball pressure spring is greater than the sum of the negative vacuum pressure and the gravity of the sealing ball, and the sealing ball is in tangential sealing with the workpiece suction port; the piston body spring is arranged below the piston body; the filter pad is above the piston body.

In a preferred embodiment of the present invention, the main body is provided with a fluid pressure regulating valve of a pressure retaining valve and an air pressure regulating valve of the pressure retaining valve; the fluid pressure regulating valve of the pressure retaining valve is connected with the fluid inlet pipe of the air escape valve; the fluid inlet pipe of the air escape valve, the fluid pressure regulating valve of the pressure retaining valve and the fluid channel are communicated in sequence; the air pipe of the air escape valve is provided with an air pressure regulating valve of a pressure retaining valve; the air pipe of the air escape valve is connected with an air pressure regulating valve of the pressure retaining valve; the air pipe of the air release valve, the air pressure regulating valve of the pressure retaining valve and the air flow channel are communicated in sequence.

In a preferred embodiment of the present invention, the top of the suction cup main body is provided with a plurality of workpiece positioning post mounting screw holes.

In a preferred embodiment of the present invention, the upper end of the movable post rod is connected to the extension rod.

In a preferred embodiment of the present invention, the top end of the movable ejector rod is hermetically connected to the universal suction head.

In a preferred embodiment of the present invention, the movable post rod is provided with scale marks on its side surface.

The utility model discloses an in a preferred embodiment, sucking disc main part side is equipped with fluid pressure table and vacuum negative pressure table, fluid pressure table is in the side of the fluid admission pipe of snuffle valve and with the horizontal arrangement fluid pressure chamber communicates with each other, vacuum negative pressure table is in the tracheal side of snuffle valve and with airflow channel communicates with each other.

In a preferred embodiment of the present invention, an exhaust groove is provided below the piston, and the exhaust groove is communicated with the second end of the piston and the airflow channel.

Compared with the prior art, the beneficial effects of the utility model are that: the workpiece is placed on the sucker, the movable ejector rod at the corresponding position can be pressed to a certain depth according to the shape of the workpiece, and then a plurality of irregular surfaces of the special-shaped workpiece are supported, so that the sucker can be matched with workpieces in various shapes; the piston is pushed by fluid, the movable ejector rod can be tightly pressed and fixed, the movable ejector rod does not move up and down after a workpiece is placed, air is sucked by external air suction equipment, and a workpiece suction port forms negative pressure to suck and fix the workpiece.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of the flexible vacuum chuck according to the present invention;

fig. 2 is a schematic top view of the flexible vacuum chuck of the present invention;

FIG. 3 is a schematic cross-sectional view at F-F in FIG. 2;

fig. 4 is a left side view schematic structure of the flexible vacuum chuck of the present invention;

FIG. 5 is a schematic cross-sectional view at E-E in FIG. 4;

fig. 6 is a schematic view of the application of the flexible vacuum chuck of the present invention;

in the figure: the vacuum suction cup comprises a suction cup main body 1, a movable ejector rod 2, a sponge sealing ring 3, a fluid inlet pipe of a relief valve 4, an air pipe of a relief valve 5, a fluid pressure regulating valve of a pressure retaining valve 6, an air pressure regulating valve of a pressure retaining valve 7, a piston body spring 8, a workpiece suction port 9, a sealing ball 10, a workpiece positioning column 11, a screw hole for mounting, an ejector rod sealing ring 12, a piston body 13, a piston 14, a ball pressure spring 15, an ejector rod pressure spring 16, a fluid channel 17, a fluid pressure chamber 18, an exhaust groove 19, an ejector rod telescopic hole 20, an air flow channel 21, a plug 22, a workpiece positioning column 23, a workpiece 24, a second hole step surface 25 and a filter pad 26.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

1. Referring to fig. 1 to 6, the utility model discloses a flexible vacuum chuck, which is characterized in that the flexible vacuum chuck comprises a chuck main body 1, wherein a fluid channel 17, an air flow channel 21 and a plurality of functional units are arranged in the chuck main body 1; a fluid inlet pipe 4 with an air escape valve and an air pipe 5 with an air escape valve are arranged outside the sucker main body 1; the fluid channel 17 is communicated with the fluid inlet pipe 4 of the air escape valve; the air flow channel 21 is communicated with the air pipe 5 of the air escape valve;

the functional unit comprises a mandril telescopic hole 20, a movable mandril 2, a piston 14 and a fluid pressure chamber 18 which are vertically arranged; the lower end of the mandril telescopic hole 20 is closed, and the upper end of the mandril telescopic hole is an open port extending to the top of the sucker main body 1; the piston 14 is arranged in the fluid pressure chamber 18 and can move back and forth along the chamber length direction, and a first end of the piston is communicated with the fluid channel 17, and a second end of the piston vertically faces the movable mandril 2 so as to press and fix the movable mandril 2; the movable ejector rod 2 is axially arranged in the ejector rod telescopic hole 20 and can move up and down; the movable ejector rod 2 is of a through pipe structure, the top of the movable ejector rod penetrates out of the upper end of the ejector rod telescopic hole 20, and the top opening of the movable ejector rod is used as a workpiece suction port 9; the piston 14 is arranged on the side surface of the movable mandril 2 in the fluid pressure chamber 18; the lower end of the movable ejector rod 2 is provided with an ejector rod pressure spring 16; the inner wall of the upper opening of the mandril telescopic hole 20 is sealed with the outer wall of the movable mandril 2 through a mandril sealing ring 12; the workpiece suction port 9, the part of the mandril telescopic hole 20, which is provided with the mandril pressure spring 16, and the airflow channel 17 are communicated in sequence.

The working process of the utility model is as follows:

connecting the inlet end of the fluid inlet valve 4 with an external fluid supply, waiting for the fluid to be input; connecting the inlet end of the fluid inlet pipe 5 of the air escape valve with external air suction equipment to wait for air suction;

placing a special-shaped workpiece 24 on the suction cup movable ejector rod 2 from top to bottom, and supporting the corresponding part of the workpiece 24 by the movable ejector rod 2 at different positions according to different shapes of the workpiece 24; after the pressed movable ejector rods 2 at different positions move downwards to a certain position, an external fluid supply source starts to supply fluid, the fluid enters a fluid pressure chamber 18 after passing through a fluid inlet pipe 4 and a fluid channel 17 of an air escape valve, a piston 14 is pushed to the movable ejector rods 2, the movable ejector rods 2 are pressed and fixed, and at the moment, the movable ejector rods 2 are kept unchanged at the upper position and the lower position;

at this time, the surface of the workpiece 24 is brought into contact with the workpiece suction port 9, the external suction device starts suction, and a vacuum airflow enters the airflow path 21 through the air pipe 5 of the air release valve to form a negative pressure in the workpiece suction port 9, so that the workpiece 24 is stuck to the workpiece suction port 9 to form suction. The sponge seal ring 3 can better block the workpiece suction port 9 from external air flow, thereby firmly sucking the workpiece 24.

When the workpiece 24 to be machined needs to be replaced, the air pipe 5 of the air release valve is closed, the workpiece 24 can be removed, then the fluid supply source stops supplying fluid, after the fluid inlet pipe 4 of the air release valve is closed, the fluid pressure in the fluid pressure chamber 18 is eliminated, the piston 14 is loosened, the movable ejector rod 2 is bounced upwards under the action of the ejector rod pressure spring 16, and if a new workpiece 24 is produced, the operation is carried out according to the previous operation method.

In an optional embodiment of the present invention, in a preferred embodiment of the present invention, the movable ejector pin 2 is internally provided with a sponge sealing ring 3, a workpiece suction port 9, a sealing ball 10, a ball compression spring 15, a filter pad 26, a piston body 13, a piston body spring 8, and a second hole step surface 25 for blocking an external air flow, which are abutted step by step from top to bottom in sequence; the sponge sealing ring 3 is arranged on the top of the movable ejector rod 2 and is arranged at the periphery of the workpiece suction port 9; the workpiece suction port 9 is a tapered hole with a large lower end and a small upper end: the sealing ball 10 is arranged between the workpiece suction port 9 and the ball pressure spring 15; the elasticity of the ball pressure spring 15 is greater than the sum of the negative vacuum pressure and the gravity of the sealing ball 10, and the sealing ball 10 is tangentially sealed with the workpiece suction port 9; the piston body spring 8 is below the piston body 13; the filter pad is above the piston body 13.

When the workpiece 24 can not completely cover all the workpiece suction ports 9, when the elasticity of the ball pressure spring 15 is larger than the sum of the negative vacuum pressure and the gravity of the sealing ball 10, the sealing ball 10 pushes the workpiece suction ports 9 to be sealed through the elasticity of the ball pressure spring 15, so that sundries are effectively prevented from entering the workpiece suction ports 9, when the workpiece 24 is in half contact with the workpiece suction ports 9, external air enters from the workpiece suction ports 9, the piston body 13 moves downwards, when the piston body 13 moves to the second stepped hole 25, the piston body 13 blocks the air flow channel 21 from the external air flow, air leakage caused when the workpiece 24 is in half contact with the workpiece suction ports 9 is avoided, and the filter pad can effectively prevent the sundries from contacting the piston body 13. The sponge sealing ring 3 can more firmly suck the workpiece 24.

In an optional embodiment of the present invention, the main body is externally provided with a fluid pressure regulating valve 6 of a pressure retaining valve and an air pressure regulating valve 7 of the pressure retaining valve; the fluid pressure regulating valve 6 of the pressure retaining valve is connected with the fluid inlet pipe 4 of the air escape valve; the fluid inlet pipe 4 of the air escape valve, the fluid pressure regulating valve 6 of the pressure retaining valve and the fluid channel 17 are communicated in sequence; the air pipe 5 of the air escape valve is provided with an air pressure regulating valve 7 of a pressure retaining valve; the air pipe 5 of the air escape valve is connected with an air pressure regulating valve 7 of the pressure retaining valve; the air pipe 5 of the air release valve, the air pressure regulating valve 7 of the pressure retaining valve and the air flow channel 21 are communicated in sequence.

The function of the fluid pressure regulating valve 6 of the pressure retaining valve is that the required fluid pressure can be adjusted by the fluid pressure regulating valve 6 of the pressure retaining valve. The fluid pressure regulating valve 6 of the pressure retaining valve is internally provided with the pressure retaining valve, so that the movable mandril 2 cannot be ejected out of the mandril telescopic hole 20 immediately when the external fluid supply equipment stops.

The function of the pressure regulating valve 7 of the pressure retaining valve is that the required vacuum gas flow rate can be adjusted by the pressure regulating valve 6 of the pressure retaining valve. When the external vacuum air supply is suddenly stopped, the workpiece 24 is not immediately separated from the workpiece suction port 9.

In an optional embodiment of the present invention, the top of the suction cup main body 1 is provided with a plurality of workpiece positioning column mounting screw holes 11, which facilitate the installation of the workpiece positioning columns 23.

As shown in fig. 6, after the workpiece positioning pillars 23 structurally matched with the workpieces 24 are fixed to the corresponding workpiece positioning pillar mounting screw holes 11, the workpieces 24 can be quickly positioned by using the workpiece positioning pillars 23.

In an optional embodiment of the utility model, the upper end of the movable mandril 2 can be clamped into the extension rod, so that the maximum workpiece supporting height of the sucker can be increased.

In an optional embodiment of the utility model, the universal suction head can be connected to the upper end of the movable ejector rod 2 in a sealing manner, and then the special-shaped workpieces with more shapes can be supported and fixed.

The utility model discloses an optional embodiment, can be equipped with the scale mark in activity ejector pin 2 side, then can be better observe the flexible height of activity ejector pin 2.

In an optional embodiment of the utility model, the sucking disc main part 1 side is equipped with fluid pressure table and vacuum negative pressure table, and fluid pressure table communicates with each other 18 at fluid admission valve 4 side and with the fluid pressure room that the level was arranged, and vacuum negative pressure table communicates with each other 21 at trachea admission valve 5 side and with airflow channel, and fluid pressure table and vacuum negative pressure table conveniently confirm the fluid pressure room 18 and the size of each pressure of airflow channel 21.

In an alternative embodiment of the present invention, an exhaust slot 19 is provided below the piston 14, and the exhaust slot 19 communicates with the second end of the piston 14 and the air flow passage 21. The exhaust groove is convenient for exhausting the gas at the second end of the piston 14 more quickly, and the piston 14 is pushed to the movable mandril 2 more quickly to hold the movable mandril 2 tightly and fixedly.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A flexible vacuum sucker is characterized by comprising a sucker main body, wherein a fluid channel, an airflow channel and a plurality of functional units are arranged in the sucker main body; a fluid inlet pipe with an air escape valve and an air pipe with an air escape valve are arranged outside the sucker main body; the fluid channel is communicated with the fluid inlet pipe of the air escape valve; the air channel is communicated with an air pipe of the air escape valve;

2. The flexible vacuum chuck according to claim 1, wherein the movable ejector rod is internally provided with a sponge sealing ring, a workpiece suction port, a sealing ball, a ball pressure spring, a filter pad, a piston body spring and a second hole step surface for blocking external air flow, which are abutted step by step from top to bottom; the sponge sealing ring is arranged on the top of the movable ejector rod and is arranged at the periphery of the workpiece suction port; the workpiece suction port is a conical hole with a large lower end and a small upper end: the sealing ball is arranged between the workpiece suction port and the ball pressure spring; the elasticity of the ball pressure spring is greater than the sum of the negative vacuum pressure and the gravity of the sealing ball, and the sealing ball is in tangential sealing with the workpiece suction port; the piston body spring is arranged below the piston body; the filter pad is above the piston body.

3. The flexible vacuum chuck according to claim 1, wherein the main body is externally provided with a fluid pressure regulating valve of a pressure retaining valve and an air pressure regulating valve of the pressure retaining valve; the fluid pressure regulating valve of the pressure retaining valve is connected with the fluid inlet pipe of the air escape valve; the fluid inlet pipe of the air escape valve, the fluid pressure regulating valve of the pressure retaining valve and the fluid channel are communicated in sequence; the air pipe of the air escape valve is provided with an air pressure regulating valve of a pressure retaining valve; the air pipe of the air escape valve is connected with an air pressure regulating valve of the pressure retaining valve; the air pipe of the air release valve, the air pressure regulating valve of the pressure retaining valve and the air flow channel are communicated in sequence.

4. The flexible vacuum chuck as claimed in claim 1, wherein said chuck body is provided with a plurality of workpiece positioning post mounting screw holes at a top portion thereof.

5. The flexible vacuum chuck as claimed in claim 1, wherein the upper end of the movable mandril is clamped into the extension bar.

6. The flexible vacuum chuck as set forth in claim 1, wherein said movable ejector pin is sealingly connected at its top end to a universal suction head.

7. The flexible vacuum chuck as set forth in claim 1, wherein said movable ejector pin is provided with graduation marks on its side surface.

8. The flexible vacuum chuck according to claim 1, wherein a fluid pressure gauge and a vacuum gauge are disposed on the side of the chuck body, the fluid pressure gauge is disposed on the side of the fluid inlet pipe of the air release valve and is connected to the fluid pressure chamber horizontally, and the vacuum gauge is disposed on the side of the air pipe of the air release valve and is connected to the air flow channel.

9. The flexible vacuum chuck according to claim 1, wherein an exhaust channel is provided below said piston, said exhaust channel communicating with said second end of said piston and said airflow passageway.