CN220641652U - Negative pressure pick-up device for curved surface workpiece - Google Patents

Abstract

The application relates to the technical field of product manufacturing and discloses a curved surface workpiece negative pressure pick-up device which comprises an adsorption body and a flexible buffer body; the adsorption body is provided with a plurality of adsorption holes, a cavity is arranged in the adsorption body, and the adsorption holes are communicated with the cavity; the flexible buffer body is provided with a plurality of abdication holes which are communicated with the adsorption holes. The surface that the adsorbate was treated to the curved surface can be adapted to this application, can take place elastic deformation along with treating adsorbate surface to can adsorb the uneven object in surface, can reduce simultaneously and adsorb the in-process because of the surface unevenness leads to treating the risk that adsorbate dropped.

Description

Negative pressure pick-up device for curved surface workpiece

Technical Field

The application relates to the field of product manufacturing, in particular to a curved surface workpiece negative pressure pick-up device.

Background

At present, the negative pressure adsorption technology is increasingly widely applied to industrial automatic production. The negative pressure adsorption is realized by utilizing negative pressure generated by the negative pressure generating device as a power source and using the negative pressure sucker to adsorb and grasp the object, thereby achieving the purpose of moving the object and providing convenience for the processing and assembly service of the product. Suction can be applied to any object having a smoother surface, particularly those unsuitable for gripping. Negative pressure adsorption has been widely used in the fields of electronic and electric appliance production, automobile manufacturing, product packaging, board transportation, etc.

The negative pressure generator comprises an air supply port, an air exhaust port, a negative pressure cavity and a spray pipe, when the air supply pressure of the air supply port reaches a certain value, the spray pipe emits supersonic jet, and due to the viscosity of the air, the high-speed jet is rolled to suck the air of the negative pressure cavity, so that the cavity forms very low vacuum degree, and the object to be adsorbed can be adsorbed at the negative pressure port by the aid of the vacuum pressure.

The negative pressure sucker comprises a negative pressure generator, a negative pressure adsorption chamber and a flat frame body, wherein the negative pressure generator is communicated with the negative pressure adsorption chamber, adsorption holes are formed in the frame body, elastic deformation of the frame body is not easy to occur, and the adsorption holes are communicated with the negative pressure adsorption chamber.

However, in the use process of the negative pressure pick-up device, when the object to be adsorbed with the uneven surface is adsorbed, especially when the curved surface workpiece is adsorbed, the adsorption holes on the negative pressure sucker cannot be fully contacted with the surface of the object to be adsorbed, and the adsorption holes can leak air, so that the risk that the object to be adsorbed can fall off in the adsorption process exists.

Disclosure of Invention

In order to be capable of adsorbing substances to be adsorbed with uneven surfaces, the application provides a curved-surface workpiece negative-pressure pick-up device.

The application provides a curved surface work piece negative pressure pick-up unit adopts following technical scheme:

a negative pressure workpiece pick-up device for curved surface workpieces comprises an adsorption body and a flexible buffer body; the adsorption body is provided with a plurality of adsorption holes, a cavity is arranged in the adsorption body, and the adsorption holes are communicated with the cavity; the flexible buffer body is provided with a plurality of abdication holes, and the abdication holes are communicated with the adsorption holes.

Through adopting above-mentioned technical scheme, the surface that the surface was treated to the flexible buffer body can adapt to the curved surface, can take place elastic deformation along with treating adsorbing the object surface for the absorption position on the flexible buffer body that the absorption hole corresponds can comparatively laminate and adsorb on treating the adsorbate, thereby can adsorb the surface uneven treat the adsorbate.

Optionally, the greater the curvature of the curved workpiece to be absorbed, the greater the relief hole depth.

By adopting the technical scheme, the larger the curvature of the curved surface workpiece to be adsorbed is, the larger the bending degree of the curved surface workpiece is, and the thicker the flexible buffer body is needed to reduce the gap, so that the depth of the yielding hole is larger.

Optionally, each of the relief holes covers at least one of the adsorption holes.

Optionally, the abdication holes are in one-to-one correspondence with the adsorption holes.

By adopting the technical scheme, the yielding holes and the adsorption holes are in one-to-one correspondence, and the process is simple and the processing is simple.

Optionally, the relief holes cover a plurality of the adsorption holes.

Through adopting above-mentioned technical scheme, for the hole of stepping down and the condition of absorption hole one-to-one, when the whole device absorption surface is liable to take place the deformation wait the adsorbate, the hole of stepping down covers a plurality of absorption holes and can reduce the deformation degree of waiting the adsorbate, reduces the damage degree of waiting the adsorbate.

Optionally, the flexible buffer comprises a sponge layer.

By adopting the scheme, when the sponge layer contacts the object to be adsorbed, the height error caused by the uneven surface of the object to be adsorbed can be compensated, so that the position on the flexible buffer body corresponding to the adsorption hole can be adsorbed on the adsorption position of the object to be adsorbed in a relatively fitting way; although the sponge layer may leak air, when the adsorption force is large enough, the influence caused by the air leak is negligible.

Optionally, the side edge of the sponge layer adjacent to the object surface to be contacted is parallel, or the side edge of the sponge layer adjacent to the object surface to be contacted is concave inwards, or the side edge of the sponge layer adjacent to the object surface to be contacted is convex outwards.

By adopting the technical scheme, the adsorption force of the sponge layer is related to the shape of the sponge, and the smoother the sponge layer is, the larger the adsorption force is; therefore, the adsorption force of the side edge, adjacent to the object surface to be contacted, on the sponge layer is parallel to the side edge, adjacent to the object surface to be contacted, of the sponge layer is larger than the adsorption force of the side edge, adjacent to the object surface to be contacted, of the sponge layer, which is concave inwards, and the adsorption force of the side edge, adjacent to the object surface to be contacted, on the sponge layer, which is convex outwards.

Optionally, the hole of stepping down includes the hole of stepping down of constant diameter and the hole of stepping down of reducing, the hole of reducing is stepped down including the hole inner wall of stepping down inwards along the axis, the hole inner wall of stepping down outwards protruding along the axis, the hole surface of stepping down is the narrow face and the hole surface of stepping down is the broad face.

By adopting the technical scheme, the shape of the abdication hole can influence the inflow of gas, and the smaller the inflow is, the smaller the adsorption force of the adsorption hole is. Therefore, the gas inflow of the equal-diameter abdication hole is larger than the gas inflow of the inner wall of the abdication hole along the concave in the axis box and the gas inflow of the abdication hole with the surface being a narrow surface, and the adsorption force corresponding to the equal-diameter abdication hole is larger; the equal-diameter abdication hole gas inflow is smaller than the gas inflow of the outwards protruding surface of the abdication hole along the axis and the gas inflow of the outwards protruding surface of the abdication hole along the axis, and the adsorption force of the outwards protruding surface of the abdication hole along the axis and the adsorption force of the abdication hole surface are larger.

Optionally, the inner diameter dimension of the hole on the side of the hole close to the adsorption hole is equal to the inner diameter dimension of the adsorption hole, or the inner diameter dimension of the hole on the side of the hole close to the adsorption hole is larger than the inner diameter dimension of the adsorption hole, or the inner diameter dimension of the hole on the side of the hole close to the adsorption hole is smaller than the inner diameter dimension of the adsorption hole.

By adopting the technical scheme, the workpiece with smaller surface area can be obtained under the condition that the inner diameter size of the abdication hole is larger than that of the adsorption hole; the workpiece with larger surface area can be adsorbed under the condition that the inner diameter size of the abdication hole is smaller than that of the adsorption hole.

Optionally, the adsorbent comprises a first end cap, a second end cap, and an adsorbent tube; the first end cover is provided with an air outlet; an air inlet is formed in the second end cover; the air supply port on the negative pressure generator is communicated with the air inlet, the negative pressure port of the negative pressure generator is communicated with the cavity, and the air outlet of the negative pressure generator is communicated with the air outlet.

By adopting the technical scheme, the negative pressure generator can form a low pressure area in the adsorption body, and external high pressure air can push an object to be adsorbed to contact with the adsorption holes, so that adsorption force is generated; the end cover is convenient for installing the negative pressure generator.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the flexible buffer body can adapt to the surface of the curved surface to-be-adsorbed object, and can elastically deform along with the surface of the to-be-adsorbed object, so that the to-be-adsorbed object with uneven surface can be adsorbed.

2. The negative pressure generator can form a low pressure area in the adsorbent body, and external high pressure air can push an object to be adsorbed to be contacted with the adsorption holes, so that adsorption force is generated.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a negative pressure pick-up device for curved workpieces;

FIG. 2 is a schematic view of the overall structure of a negative pressure extractor for curved workpieces, primarily for illustrating the silencer structure of another embodiment;

FIG. 3 is a cross-sectional view of a negative pressure pick-up device for curved workpieces, primarily for illustrating the internal structure of the adsorbent;

FIG. 4 is a schematic diagram of a negative pressure workpiece pick-up device turned over along the Y-axis, mainly used for showing the one-to-one correspondence between the abdication holes and the adsorption holes;

FIG. 5 is a schematic view of a negative pressure extractor for curved workpieces turned over along the Y-axis, primarily to show the shape of the sponge layer in the second embodiment;

FIG. 6 is a schematic view of a negative pressure extractor for curved workpieces turned over along the Y-axis, primarily to show the shape of the sponge layer in a third embodiment;

FIG. 7 is a schematic diagram of a negative pressure workpiece pick-up device turned over along the Y-axis, primarily for illustrating the relationship of the relief holes covering the plurality of suction holes in another embodiment;

FIG. 8 is a cross-sectional view of a negative pressure extractor for curved workpieces, primarily for illustrating the wide mouth shape of the relief holes in another embodiment;

FIG. 9 is a cross-sectional view of a negative pressure extractor for curved workpieces, primarily for illustrating the convex shape of the inner sidewall of the relief hole in another embodiment;

FIG. 10 is a cross-sectional view of a negative pressure extractor for curved workpieces, primarily for illustrating the narrow mouth shape of the relief holes in another embodiment;

FIG. 11 is a cross-sectional view of a negative pressure extractor for curved workpieces, primarily for illustrating the concave shape of the inside wall of a relief hole in another embodiment;

FIG. 12 is a cross-sectional view of a negative pressure extractor for curved workpieces, primarily for illustrating that in another embodiment the inner diameter of the hole on the side of the relief hole adjacent the suction hole is equal to the inner diameter of the suction hole;

FIG. 13 is a cross-sectional view of a negative pressure extractor for curved workpieces, primarily for illustrating another embodiment wherein the inside diameter of the hole on the side of the relief hole adjacent the suction hole is greater than the inside diameter of the suction hole;

FIG. 14 is a cross-sectional view of a negative pressure extractor for curved workpieces, primarily for illustrating another embodiment wherein the inner diameter of the hole on the side of the relief hole adjacent the suction hole is smaller than the inner diameter of the suction hole.

Reference numerals: 1. an adsorbent; 2. a flexible buffer body; 3. an adsorption tube; 301. a groove; 302. a mounting groove; 303. a convex strip; 4. adsorption holes; 5. a relief hole; 6. a first end cap; 601. an air outlet; 7. a second end cap; 701. an air inlet; 8. a muffler.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

The embodiment of the application discloses a curved surface work piece negative pressure pick-off unit. Referring to fig. 1, comprises an adsorbent 1 and a flexible buffer 2. The adsorbent 1 is provided with a plurality of adsorption holes 4, the inside of the adsorbent 1 is provided with a cavity, and the adsorption holes 4 are communicated with the cavity. The flexible buffer body 2 is provided with a plurality of abdication holes 5, and the abdication holes 5 are communicated with the adsorption holes 4. The adsorbent 1 comprises a first end cover 6, a second end cover 7 and an adsorption tube 3, wherein an air outlet 601 is arranged on the first end cover 6, and an air inlet 701 is arranged on the second end cover 7.

Referring to fig. 2 and 3, the muffler 8 is generally bellows-shaped, and the first end cover 6 is in communication with the muffler 8, so that the muffler 8 is generally added to the air outlet 601 to reduce noise discharged from the positive pressure air source, since the positive pressure air source generally generates large noise when flowing out of the air outlet 601. In the embodiment, a negative pressure generator is arranged inside the adsorbing body 1; the air supply port of the negative pressure generator is communicated with the air inlet 701, the air outlet of the negative pressure generator is communicated with the air outlet 601, and the negative pressure port of the negative pressure generator is communicated with the adsorption hole 4.

Referring to fig. 3, the adsorbent 1 is in a body shape as a whole, and adsorption holes 4 are provided along one side of the length direction of the adsorbent 1, the adsorption holes 4 are in an oval shape, and the adsorption holes 4 are distributed in a row along the length direction of the adsorbent 1. Grooves 301 are provided along both sides of the longitudinal direction of the adsorbent 1. Inside the adsorption body 1 and corresponding to the grooves 301, there are provided cylindrical mounting grooves 302, and one groove 301 corresponds to two cylindrical mounting grooves 302. Be equipped with sand grip 303 along the one side of adsorbent 1 length direction and keeping away from adsorption port 4, be equipped with two sand grips 303 along the one side of adsorbent 1 length direction and keeping away from adsorption port 4 in this embodiment, two sand grips 303 are on a parallel with adsorbent 1 length direction, and the symmetric distribution is in adsorbent 1 length both sides, and holistic toughness of adsorbent 1 can be strengthened to sand grip 303, when adsorbent 1 adsorbs the heavy object, can prevent adsorbent 1 deformation as far as possible.

Referring to fig. 4, the bottom of the adsorbing body 1 is connected with the flexible buffer body 2, the flexible buffer body 2 is integrally cuboid, and has a thicker thickness, in this embodiment, the adsorbing hole 4 is located in the middle of the abdicating hole 5, and the inner diameter size of the abdicating hole 5 is larger than that of the adsorbing hole 4. In this embodiment, the flexible buffer body 2 adopts the sponge layer, and the sponge layer is whole to be the cuboid form, and the sponge layer can compensate the height error that waits that adsorbate surface unevenness brought when waiting the adsorbate for the absorption position on waiting the adsorbate can comparatively be laminated to the position that corresponds the absorption hole 4 on the flexible buffer body 2. Although the sponge layer may leak air, when the adsorption force of the adsorption hole 4 is sufficiently large, the influence of the air leak is negligible.

Referring to fig. 5, in the second embodiment, the side edge of the sponge layer adjacent to the object surface to be contacted is recessed inward, and the sponge layer has smaller adsorption force and poorer adsorption force stability when contacting the object to be adsorbed.

Referring to fig. 6, in the third embodiment, the side of the sponge layer adjacent to the object surface to be contacted is protruded outward, and the sponge layer of this embodiment has a smaller adsorption force when contacting the object to be adsorbed because the more flat the sponge is, the stronger the adsorption force.

Referring to fig. 7, in another embodiment, the relief holes 5 are oval, the relief holes 5 are equidistantly distributed on one side of the length of the flexible buffer body 2, and one relief hole 5 is at least communicated with two adsorption holes 4. In this embodiment, one hole 5 of stepping down communicates two absorption holes 4, and one hole 5 of stepping down communicates the absorption hole 4 enough, and when adsorption affinity is enough big, the influence that the sponge layer gas leakage brought can be ignored.

Referring to fig. 8, 9, 10 and 11, in another embodiment, the inner diameter of the relief hole 5 may vary, including the inner wall of the relief hole 5 being concave along the axis, the inner wall of the relief hole 5 being convex outward along the axis, the surface of the relief hole 5 being narrow and the surface of the relief hole 5 being broad.

Referring to fig. 12, 13 and 14, in another embodiment, the surface of the relief hole 5 is a broad surface, and the inner diameter dimension of the hole on the side of the relief hole 5 close to the suction hole 4 is equal to the inner diameter dimension of the suction hole 4, or the inner diameter dimension of the hole on the side of the relief hole 5 close to the suction hole 4 is larger than the inner diameter dimension of the suction hole 4, or the inner diameter dimension of the hole on the side of the relief hole 5 close to the suction hole 4 is smaller than the inner diameter dimension of the suction hole 4.

The implementation principle of the curved surface workpiece negative pressure pick-up device is as follows: when the flexible buffer body 2 is contacted with the surface of an object to be contacted, a low-pressure area is formed in the adsorbing body 1 through the negative pressure generator, and the high-pressure air can push the object to be adsorbed to be contacted with the adsorbing hole 4 due to high external air pressure, so that the adsorbing force is generated; the thickness of the flexible buffer body 2 is thicker, the adsorption force is larger, and the surface of the flexible buffer body 2 can elastically deform along with the surface of an object to be adsorbed, so that the object with uneven surface can be adsorbed, and the flexible buffer body has the characteristics that the thickness of the flexible buffer body 2 is thicker, the adsorption force is larger, and the flexible buffer body 2 can adapt to the surface of the curved surface object to be adsorbed and the negative pressure generator can provide the adsorption force.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (10)

1. The negative pressure workpiece taking device for the curved surface workpiece is characterized by comprising an adsorption body (1) and a flexible buffer body (2); a plurality of adsorption holes (4) are formed in the adsorption body (1), a cavity is formed in the adsorption body (1), and the adsorption holes (4) are communicated with the cavity; the flexible buffer body (2) is provided with a plurality of abdication holes (5), and the abdication holes (5) are communicated with the adsorption holes (4).

2. The negative pressure pick-up device for curved workpieces according to claim 1, wherein the greater the curvature of the curved workpiece to be sucked, the greater the depth of the relief hole (5).

3. A curved workpiece negative pressure pick-up device according to claim 1, characterized in that each of said relief holes (5) covers at least one of said suction holes (4).

4. A negative pressure pick-up device for curved workpieces according to claim 3, wherein the relief holes (5) are in one-to-one correspondence with the suction holes (4).

5. A curved workpiece negative pressure pick-up device according to claim 3, characterized in that said relief holes (5) cover a plurality of said suction holes (4).

6. A curved workpiece negative pressure pick-up device according to claim 1, characterized in that the flexible buffer body (2) comprises a sponge layer.

7. The negative pressure workpiece pick-up device for curved workpieces according to claim 6, wherein the side edge of the sponge layer adjacent to the object surface to be contacted is parallel, or the side edge of the sponge layer adjacent to the object surface to be contacted is concave inwards, or the side edge of the sponge layer adjacent to the object surface to be contacted is convex outwards.

8. The negative pressure workpiece taking device for curved workpieces according to claim 6 or 7, wherein the relief hole (5) comprises a constant diameter relief hole (5) and a variable diameter relief hole (5), the variable diameter relief hole (5) comprises an inward concave inner wall of the relief hole (5) along an axis, an outward convex inner wall of the relief hole (5) along the axis, a narrow surface on the surface of the relief hole (5) and a wide surface on the surface of the relief hole (5).

9. The negative pressure workpiece taking device for curved workpieces according to claim 8, wherein the inner diameter dimension of the hole of the side of the relief hole (5) close to the adsorption hole (4) is equal to the inner diameter dimension of the adsorption hole (4), or the inner diameter dimension of the hole of the side of the relief hole (5) close to the adsorption hole (4) is larger than the inner diameter dimension of the adsorption hole (4), or the inner diameter dimension of the hole of the side of the relief hole (5) close to the adsorption hole (4) is smaller than the inner diameter dimension of the adsorption hole (4).

10. A curved workpiece negative pressure pick-up device according to claim 1, characterized in that the sorbent body (1) comprises a first end cap (6), a second end cap (7) and a sorbent tube (3); an air outlet (601) is formed in the first end cover (6); an air inlet (701) is formed in the second end cover (7); an air supply port on the negative pressure generator is communicated with the air inlet (701), a negative pressure port of the negative pressure generator is communicated with the cavity, and an air outlet of the negative pressure generator is communicated with the air outlet (601).