CN210081772U

CN210081772U - Vacuum adsorption type sucker

Info

Publication number: CN210081772U
Application number: CN201920582673.0U
Authority: CN
Inventors: 张少龙; 李兰兰; 周鑫浩
Original assignee: Hefei Hante Intelligent Equipment Co Ltd
Current assignee: Hefei Hante Intelligent Equipment Co Ltd
Priority date: 2019-04-25
Filing date: 2019-04-25
Publication date: 2020-02-18
Anticipated expiration: 2029-04-25

Abstract

The utility model discloses a vacuum adsorption formula sucking disc belongs to mechanical technical field, including a casing, the inside cavity of casing and inside vacuum generator that is provided with, the casing bottom surface is provided with a plurality of passageways that communicate to the casing is inside, movable mounting has the valve body in the passageway, be provided with the valve diaphragm on the casing bottom surface, be provided with the spacing opening that corresponds with each passageway on the valve diaphragm. The utility model discloses a movable mounting valve body in the passageway, valve body and casing form mechanical type check valve, and when the passageway was not covered by the work piece, check valve self-closing guaranteed casing cavity vacuum, possessed leak protection gas function, improved work piece handling efficiency and suction.

Description

Vacuum adsorption type sucker

Technical Field

The utility model relates to the technical field of machinery, in particular to vacuum adsorption formula sucking disc.

Background

A robot is an automatic manipulator that simulates some of the motion functions of a human hand and arm to grasp, transport objects or manipulate tools according to a fixed program. The manipulator has the advantages of replacing manual heavy labor to realize mechanization and automation of production, operating and protecting personal safety in harmful environment and the like, so that the manipulator is widely applied to departments of mechanical manufacturing, metallurgy, electronics, light industry, atomic energy and the like. However, for transporting objects with smooth surfaces, fragile materials and heavy weight, it is difficult to meet the requirements by using a common manipulator, and in order to achieve safe and efficient transportation and grabbing of such objects, a vacuum manipulator is required to be used for completion.

The vacuum manipulator is used for generating vacuum or negative pressure in the sucker and pumping air of the adsorption head by using a vacuum pump to form vacuum pressure difference so as to adsorb a workpiece. The existing vacuum manipulator is generally used by connecting a rubber suction cup, a spring buffer supporting rod, a check valve, an air distribution block, a vacuum generator and a positive pressure electromagnetic valve through pipelines, and the number of pipelines is large. It has the disadvantages that: firstly, because the passageway of vacuum cavity is great, need a large amount of compressed air, higher velocity of flow just can realize, the resource consumption is high. Secondly, because the vacuum cavity channel is larger, the time for forming vacuum is longer, the reaction speed is slow, and the working efficiency is low. Thirdly, the requirement for the surface of the adsorption object is high, and the transportation requirement of the workpiece with uneven surface is difficult to be met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vacuum adsorption formula sucking disc to the realization picks up the work piece fast.

For the purpose of the realization, the utility model discloses a vacuum adsorption formula sucking disc, including a casing, the inside cavity of casing and inside vacuum generator that is provided with, the casing bottom surface is provided with a plurality of passageways that communicate to the casing is inside, movable mounting has the valve body in the passageway, be provided with the valve diaphragm on the casing bottom surface, be provided with the spacing opening that corresponds with each passageway on the valve diaphragm.

Further, the channel comprises a first channel portion and a second channel portion, the diameter of the first channel portion is smaller than that of the second channel portion, the first channel portion is communicated to the inside of the shell, and a guide portion is arranged between the first channel portion and the second channel portion.

Further, the maximum diameter of the inscribed circle of the limiting opening is smaller than the outer diameter of the valve body.

Further, the limiting opening comprises at least one arc-shaped part or a corner part, and the maximum inscribed circle is formed between the at least two arc-shaped parts or the two corner parts.

Furthermore, a sealing piece is arranged on the valve diaphragm, and through holes corresponding to the channels are formed in the sealing piece.

Furthermore, two adjacent rows of channels on the bottom surface of the shell are arranged in a staggered manner.

Further, the sealing element is made of flexible materials.

Further, the valve body is spherical or columnar.

Further, the shell comprises an upper shell and a lower bottom plate, and the upper shell and the lower bottom plate are connected in a separable mode.

Furthermore, openings are formed in two ends of the shell, end covers are arranged at the openings of the end parts, and the vacuum generator is installed on the end covers; the clamping parts are arranged on two side faces of the shell.

Compared with the prior art, the utility model discloses there are following technological effect: the vacuum generator in the shell cavity is communicated with the outside through the end cover, and jets out high-speed jet flow through the spray pipe by utilizing compressed air to suck gas in the cavity, so that very low vacuum degree is formed in the cavity. When the vacuum chuck works, the vacuum generator vacuumizes the cavity, and when the channel is not covered by the workpiece, the valve body plugs the channel to ensure the vacuum degree in the cavity; when the channel is covered by the workpiece, air is pumped into the cavity, the channel blocked by the workpiece generates a certain vacuum degree, the valve body opens the channel under the action of air flow, and the workpiece is adsorbed by the channel under the action of atmospheric pressure. This scheme is through at passageway internal movable mounting valve body, and the valve body forms mechanical type check valve with the casing, and when the passageway was not covered by the work piece, the check valve self-closing guaranteed casing cavity vacuum, possesses the leak protection gas function, has improved work piece handling efficiency and suction.

Drawings

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings:

FIG. 1 is a schematic view of the structure of the valve body mounted in the passageway;

FIG. 2 is a schematic view of a channel structure;

FIG. 3 is a schematic view of a valve diaphragm construction;

FIG. 4 is a schematic view of the assembly of the vacuum chuck;

FIG. 5 is a left side view of the vacuum suction cup;

FIG. 6 is a schematic view of the staggered arrangement of the channels on the lower base plate;

FIG. 7 is a schematic view of the staggered arrangement of through holes on the sealing member;

FIG. 8 is a schematic view of the housing assembled with the end cap;

fig. 9 is a schematic view of an end cap mounted vacuum generator configuration.

In the figure: 10-shell, 20-vacuum generator, 30-channel, 40-valve body, 50-valve membrane, 60-sealing element, 11-end cover, 12-upper shell, 13-lower bottom plate, 14-clamping part, 31-first channel part, 32-second channel part, 33-guide part, 51-limit opening and 61-through hole.

Detailed Description

To further illustrate the features of the present invention, please refer to the following detailed description and accompanying drawings. The drawings are for reference and illustration purposes only and are not intended to limit the scope of the present disclosure.

As shown in fig. 1, the present embodiment discloses a vacuum suction type suction cup, which includes a housing 10, a hollow vacuum generator 20 disposed inside the housing 10, a plurality of channels 30 connected to the inside of the housing 10 disposed on the bottom surface of the housing 10, a valve body 40 movably disposed in the channels 30, a valve membrane 50 disposed on the bottom surface of the housing 10, and a limiting opening 51 disposed on the valve membrane 50 and corresponding to each channel 30.

In this embodiment, the valve body 40 is movably installed in the passage 30, the valve body 40 and the housing 10 form a mechanical check valve, when the passage 30 is not covered by a workpiece, the check valve is automatically closed, the vacuum degree of the cavity of the housing 10 is ensured, the air leakage prevention function is provided, the workpiece carrying efficiency and the suction force are improved, meanwhile, the volume of the passage 30 can be reduced through the valve body 40, a large amount of compressed air is not needed to realize adsorption, and the resource energy consumption is reduced. The working principle of the vacuum adsorption type sucker is as follows: when the channel 30 is not covered by the workpiece, the valve body seals the channel to ensure the vacuum degree in the cavity; when the channel 30 is covered by the workpiece, air is pumped into the cavity, the channel 30 blocked by the workpiece generates a certain vacuum degree, the valve body 40 opens the channel 30 under the action of air flow, and the channel 30 adsorbs the workpiece under the action of atmospheric pressure.

As shown in fig. 2, the passage 30 includes a first passage portion 31 and a second passage portion 32, the first passage portion 31 has a diameter smaller than that of the second passage portion 32, the first passage portion 31 communicates to the inside of the housing 10, and a guide portion 33 is provided between the first passage portion 31 and the second passage portion 32. Wherein: the first channel part 31 and the second channel part 32 are both cubic, the guide part 33 is in the shape of a prismoid, the upper cross-sectional area of the prismoid is larger than the lower cross-sectional area, the upper cross-section of the prismoid is coplanar with the second channel part 32, and the lower cross-section of the prismoid is coplanar with the first channel part 31.

The valve body 40 is spherical or columnar, and preferably has a spherical structure. The valve body 40 is made of metal materials or rubber materials, and the outer diameter of the valve body 40 is equal to the length of the upper section of the frustum, the width of the upper section of the frustum and the length of the lower section of the frustum =12:15:15: 5.

As shown in fig. 3, the maximum inscribed circle diameter of the limit opening 51 is smaller than the outer diameter of the valve body 40. The maximum inscribed circle diameter of the limit opening 51 is designed to be smaller than the outer diameter of the valve body 40 to prevent the valve body 40 from falling out of the passage 30.

Further, the limiting opening 51 comprises at least one arc-shaped portion or corner portion, and the maximum inscribed circle is formed between at least two arc-shaped portions or two corner portions. The maximum diameter of the inscribed circle of the limiting opening 51 is smaller than the outer diameter of the valve body 40, and the sectional area of the limiting opening 51 is larger than or equal to that of the channel 30, so that the drift diameter of the limiting opening 51 is increased on the premise that the valve body 40 cannot fall off from the channel 30, and the gas flow is guaranteed.

Preferably, in the present embodiment, the limiting opening 51 may be in a cloverleaf-like shape, a quadrangle star shape, or the like, so that the limiting opening 51 allows a larger flow to pass through, and is suitable for high-speed grasping and releasing occasions of the workpiece.

As shown in fig. 4 to 5, the valve diaphragm 50 is provided with a sealing member 60, and the sealing member 60 is provided with a through hole 61 corresponding to each passage 30. All adopt the 3M gum adhesion between casing bottom plate and the valve diaphragm and between valve diaphragm and the sealing member, sealing member 60 adopts preparation such as silica gel or rubber or EPDM material, selects for use flexible material preparation can be applicable to the work piece of carrying surface height unevenness, and the work piece is snatched in effective protection. In the embodiment, the sealing element 60 is preferably made of EPDM (Ethylene-Propylene-Diene Monomer, EPDM), which has the characteristics of good chemical stability, wear resistance, elasticity, oil resistance, and the like, and is airtight, non-absorbent, and capable of rapidly recovering to the original shape after being compressed, and further utilized for picking up a workpiece.

Preferably, the sealing member 60 may be made of a silicone foam, a rubber foam, or an EPDM foam, which has a light weight, and can reduce the weight of the vacuum adsorption apparatus and reduce energy consumption.

As shown in fig. 6-7, two adjacent rows of channels 30 on the bottom surface of the housing 10 are arranged in a staggered manner. In this embodiment, three rows of channels 30 are disposed on the bottom surface of the housing 10, and two adjacent rows of channels 30 are arranged in a staggered manner. Correspondingly, the limiting openings 51 formed in the valve membrane 50 and the through holes 61 formed in the sealing element 60 correspond to the channels 30 in the same number and in the same positions, and are arranged in a staggered manner. In the embodiment, the channels 30 are arranged in a staggered manner, so that the adsorption points are distributed more densely, and the workpiece is grabbed more firmly.

As shown in fig. 8 to 9, the housing 10 is provided with openings at both ends thereof and end caps at the openings, and the vacuum generator 20 is mounted on the end caps. The end cover is provided with an air inlet and an air outlet, the air inlet end of the vacuum generator 20 is communicated with an external air source through the air inlet on the end cover, and the air outlet end of the vacuum generator 20 is communicated with the outside through the air outlet.

As shown in fig. 5, the two side surfaces of the housing 10 are provided with clamping portions 14 for clamping with the side surfaces of other housings 10, and the clamping portions 14 on the two side surfaces are correspondingly provided. The vacuum adsorption devices with different widths are freely assembled by embedding the clamping parts 14 on the two sides of the shell 10, so that the vacuum adsorption devices can be quickly changed into large-area adsorption devices to meet the adsorption requirements of workpieces with different sizes.

Further, the housing 10 includes an upper housing 12 and a lower base plate 13, the upper housing 12 and the lower base plate 13 are detachably connected, and a sealed cavity is formed between the upper housing 12, the lower base plate 13 and the two end covers 11. Wherein, the two sides of the bottom of the upper shell 12 are provided with sealing grooves, sealing strips are firstly placed in the sealing grooves during installation, then the lower bottom plate 13 is covered and locked by countersunk screws. The upper shell 12 and the lower base plate 13 in this embodiment are detachably connected to facilitate replacement of the suction member of the suction cup by replacing the base plate. Therefore, the suction parts with different models and different grabbing materials become a replaceable spare part library, and the effect of one shell with multiple purposes is achieved.

It should be noted that the housing 10 is made of extruded aluminum or ultra-light carbon fiber, and the extruded aluminum can be easily molded into a card at a low cost.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a vacuum adsorption formula sucking disc, includes a casing, the inside cavity of casing and inside are provided with vacuum generator, and the casing bottom surface is provided with a plurality of passageways that communicate to the casing inside, its characterized in that, movable mounting has the valve body in the passageway, be provided with the valve diaphragm on the casing bottom surface, be provided with the spacing opening that corresponds with each passageway on the valve diaphragm.

2. The vacuum chuck according to claim 1, wherein the passage comprises a first passage portion and a second passage portion, the first passage portion has a diameter smaller than that of the second passage portion, the first passage portion communicates with the inside of the housing, and a guide portion is provided between the first passage portion and the second passage portion.

3. The vacuum chuck according to claim 1 or 2, wherein the maximum inscribed circle diameter of the limit opening is smaller than the outer diameter of the valve body.

4. A vacuum chuck according to claim 3 wherein said retaining opening comprises at least one arcuate portion or corner portion, at least two arcuate portions or corners defining said maximum inscribed circle therebetween.

5. The vacuum chuck according to claim 1, wherein the valve diaphragm is provided with a sealing member, and the sealing member is provided with a through hole corresponding to each passage.

6. The vacuum chuck according to claim 1 or 5, wherein the two rows of channels are staggered on the bottom surface of the housing.

7. The vacuum suction chuck as claimed in claim 5, wherein said sealing member is made of a flexible material.

8. The vacuum suction chuck as claimed in claim 1, wherein said valve body is spherical or cylindrical.

9. The vacuum chuck according to claim 1, wherein the housing comprises an upper housing and a lower plate, and the upper housing is detachably connected to the lower plate.

10. The vacuum chuck as claimed in claim 9, wherein the housing has openings at both ends thereof and end caps at the openings at the ends thereof, and the vacuum generator is mounted on the end caps; the clamping parts are arranged on two side faces of the shell.