TW202126446A - Sucker with two-layer structure which can effectively prolong the service life of the sucker - Google Patents

Abstract

A sucker with a two-layer structure is suitable for absorbing a substrate. The sucker includes a connecting rod, a main body, an outer annular body and an inner annular body. The connecting rod is hollow and has a surrounding wall and an air suction space defined by the surrounding wall. The main body is provided for inserting the connecting rod therein and has a surface facing the substrate. The surface is formed with a slot communicated with the air suction space. The outer annular body is made of elastic material and extended away from the main body from the periphery of the surface. The inner annular body is made of elastic material and extended away from the main body from the surface. The inner annular body surrounds the slot of the main body and is spaced apart from the outer annular body. When the sucker adsorbs the substrate, the outer annular body and the inner annular body are abutted against the substrate to be elastically deformed, so that the inner annular body and the main body define an inner adsorption space. The inner annular body, the outer annular body and the main body define an outer adsorption space. The inner adsorption space and the outer adsorption space are separated by the inner annular body.

Description

Suction cup with double-layer structure

The present invention relates to a suction cup, in particular to a suction cup with a double-layer structure.

Taiwan Patent Publication No. TW201920019A discloses a glass manufacturing equipment, which mentions that after a glass ribbon is produced, when the glass ribbon is to be divided into a glass sheet, it is necessary to first hold the glass sheet with a gripping head, and then perform the process on the glass ribbon. The cut glass sheet can prevent the glass sheet from falling after the cutting is completed, causing the glass sheet to be damaged or even broken. The gripping head has a plurality of suction cups and a suction device connected to the suction cups, and the suction cups are sucked to a vacuum state by the suction device to suck the glass sheet. However, the suction cup is easy to be cut by the glass chips produced by cutting during the cutting process. Once the suction cup has a hole, it will reduce the holding stability of the gripping head and may cause the glass sheet to fall after the cutting is completed. According to experience, it is about every 1 -2 days, it will be necessary to stop the machine and replace all the suction cups to prevent the glass sheet from falling. Therefore, the existing suction cups still have room for improvement.

Therefore, one of the objectives of the present invention is to provide a suction cup with a double-layer structure that can prolong the service life.

Therefore, the sucker with a double-layer structure of the present invention is suitable for sucking a substrate. The sucker includes a connecting rod, is hollow and has a surrounding wall and a suction space defined by the surrounding wall; a body made of elastic material The connecting rod is inserted and has a surface facing the substrate, and the surface is formed with a groove communicating with the suction space; an outer ring body made of elastic material and extending away from the main body from the periphery of the surface; and An inner ring body made of elastic material and extending away from the body from the surface. The inner ring body surrounds the groove of the body and is spaced from the outer ring body. The body, the outer ring body and the inner ring body It is formed in an integrated manner; when the suction cup adsorbs the substrate, the outer ring body and the inner ring body abut the substrate and elastically deform, so that the inner ring body and the body define an inner suction space, and the inner The ring body, the outer ring body and the body define an outer adsorption space, and the inner adsorption space and the outer adsorption space are separated by the inner ring body.

In some embodiments, the surrounding wall of the connecting rod is provided with at least one through hole communicating with the suction space, and the surface of the body is formed with at least one vent spaced apart from the groove and at least one facing the connecting rod Extending and connecting the vent hole and the perforated air flow branch, the vent hole is located between the inner ring body and the outer ring body, and the outer adsorption space is connected to the pump through the vent hole, the air flow branch and the perforation Air space.

In some embodiments, the body further has a plurality of stop blocks protruding on the surface and located in the inner ring. The stop blocks are spaced apart from each other and surround the groove in a ring shape. When the suction cup absorbs the When the substrate is used, the stop blocks abut against the substrate to prevent the surface from contacting the substrate.

In some embodiments, the surrounding wall is provided with a plurality of perforations, the surface is formed with a plurality of vent holes and a plurality of air flow branches, and the vent holes are arranged in a ring shape between the inner ring body and the outer ring body.

In some embodiments, the extension length of the inner ring body is smaller than the distance between the inner ring body and the outer ring body.

The present invention has at least the following effects: through the arrangement of the inner ring body and the outer ring body, even if the outer ring body is damaged and produces holes to make the outer adsorption space communicate with the outside, the suction cup can still be separated from the outer adsorption space. The partitioned inner suction space is evacuated to a vacuum state to continuously and firmly adsorb the substrate, unlike the existing suction cup once it is damaged and creates a hole, because it is connected to the outside world, the internal space of the suction cup cannot be evacuated to a vacuum so that the suction force is large. When it falls, the substrate cannot be firmly adsorbed and must be replaced. Therefore, the double-layer structure design of the inner ring body and the outer ring body can effectively prolong the service life of the suction cup.

1 and 2, an embodiment of the suction cup with a double-layer structure of the present invention is suitable for being installed at the end of a picking claw 100 of a glass manufacturing equipment (not shown), and the picking claw 100 is installed There are a plurality of suction cups 10, and the glass manufacturing equipment further includes a suction device 20 arranged on the extraction claw 100 and connected to the suction cup 10 through an air flow pipe (not shown), and the suction device 20 can be used for the suction cup 10 The air is evacuated to a vacuum state to adsorb a substrate 1, and then the substrate 1 is cut and processed. The substrate 1 may be, for example, a glass plate. Each suction cup 10 includes a connecting rod 2, a body 3, an outer ring body 4 and an inner ring body 5.

Referring to FIGS. 2 to 4, the connecting rod 2 is made of a metal material and is in the shape of a hollow cylinder, which is embedded in the main body 3 and is detachably connected to the end of the extraction claw 100. The connecting rod 2 has a surrounding wall 21 and a suction space 22 defined by the surrounding wall 21. The part of the surrounding wall 21 buried in the body 3 is provided with two perforations 211 communicating with the suction space 22. The surrounding wall 21 is exposed on the outer surface 31 of the body 3 and is formed with threads. The end of the extraction claw 100 is also provided Correspondingly matched screw holes, so that the connecting rod 2 is installed on the capturing claw 100. The air extraction space 22 is connected to the air extraction device 20 through an air flow pipe (not shown). Wherein, the coupling method of the connecting rod 2 and the capturing claw 100 is not limited to this embodiment, as long as the connecting rod 2 can be detachably connected to the capturing claw 100, it is convenient for the user to replace the Suction cup 10 is enough.

The shape of the main body 3 is roughly the same as two truncated cones connected by bottom surfaces, and is made of elastic material, such as silicon rubber, which has high temperature resistance characteristics. The main body 3 has a surface 31 facing the substrate 1, the surface 31 is formed with a groove 32 communicating with the suction space 22, eight stop blocks 33 protruding on the surface 31, two and the groove Two vent holes 34 separated by 32 extend toward the connecting rod 2 and communicate with the vent holes 34 and the air flow branch passages 35 of the perforations 211 respectively. The stopping blocks 33 are generally cylindrical, spaced apart from each other and arranged in a ring shape to surround the groove 32.

The outer ring body 4 extends obliquely outwards away from the main body 3 from the periphery of the surface 31. The outer ring body 4 is also made of elastic material, such as silicon rubber, which has high temperature resistance. The inner ring body 5 extends from the surface 31 away from the main body 3. The inner ring body 5 is also made of elastic material, such as silicon rubber, which has high temperature resistance. The inner ring body 5 surrounds the groove 32 and the stop blocks 33 of the body 3 and is spaced from the outer ring body 4, and the vent holes 34 are located between the inner ring body 5 and the outer ring body 4 . In this embodiment, the main body 3, the outer ring body 4, and the inner ring body 5 are integrally formed, and the extension length of the inner ring body 5 is smaller than the extension length of the outer ring body 4, but Not limited to this. In other embodiments, the extension length of the inner ring body 5 may be the same as the extension length of the outer ring body 4, as long as the extension length of the inner ring body 5 is smaller than that of the inner ring body 5 and the outer ring body. The distance between the bodies 4 is sufficient, and the outer ring body 4 and the inner ring body 5 are not limited by the oblique extension of this embodiment. In other embodiments, they may also be along substantially perpendicular to the surface 31. Direction extension. Wherein, the number of the stop blocks 33 is not limited to eight. In other embodiments, it can also be other numbers, as long as there are more than one. The number of the perforations 211, the ventilation holes 34, and the air flow branch passages 35 is not limited to two, and other numbers may be used in other embodiments, and if the number of the ventilation holes 34 is three The above is arranged in a ring shape between the inner ring body 5 and the outer ring body 4.

4, when the suction cup 10 sucks the substrate 1, the outer ring body 4 and the inner ring body 5 abut the substrate 1 and elastically deform, and the stop blocks 33 abut the substrate 1 to prevent the surface 31 In contact with the substrate 1, the inner ring body 5 and the body 3 define an inner adsorption space S1, the inner ring body 5, the outer ring body 4, and the body 3 define an outer adsorption space S2, and the inner adsorption The space S1 and the outer adsorption space S2 are separated by the inner ring body 5. The air extraction device 20 evacuates the inner adsorption space S1 to a vacuum state through the air extraction space 22 and the groove 32 through the air flow pipeline (not shown), and passes the air extraction space 22, the air flow branch 35 and the vent hole 34. The outer suction space S2 is pumped to a vacuum state to simultaneously generate suction force on the surface 31 of the substrate 1 corresponding to the inner suction space S1 and the outer suction space S2, so that the suction cup 10 can firmly adsorb the substrate 1. By abutting against the substrate 1 by the stop blocks 33, the friction between the suction cup 10 and the substrate 1 can be increased, so that the suction cup 10 is not easy to slide. In this way, even if the outer ring body 4 is cut by glass shards or residues during the cutting of the substrate 1 to produce holes, so that the outer adsorption space S2 communicates with the outside and cannot be evacuated to a vacuum state, the suction cup 10 can still borrow The inner adsorption space S1 separated from the outer adsorption space S2 is evacuated to a vacuum state to continuously and firmly adsorb the substrate 1 without losing the adsorption force due to damage to the outer ring body 4 and the suction cup must be replaced 10. Effectively prolong the service life of the suction cup 10, and compared with the existing suction cup, the measured results can extend the service life from 1-2 days to about 20 days, and the effect is very significant. It should be supplemented that the extension length of the inner ring body 5 should not be greater than the distance between the inner ring body 5 and the outer ring body 4, otherwise when the suction cup 10 adsorbs the substrate 1, the outer ring body 4 will be elastically deformed. It may cover the vent holes 34 and affect the adsorption force of the outer adsorption space S2.

In summary, the suction cup 10 with a double-layer structure of the present invention is provided with the inner ring body 5 and the outer ring body 4, even if the outer ring body 4 is cut by glass fragments or residues during the cutting of the substrate 1. Holes are generated so that the outer adsorption space S2 communicates with the outside world and cannot be evacuated to a vacuum state. The suction cup 10 can still be evacuated to a vacuum state by the inner adsorption space S1 separated from the outer adsorption space S2. Sustaining and stably adsorbing the substrate 1 is different from the existing suction cup once it is damaged and creating a hole. Because of the communication with the outside, the internal space of the suction cup cannot be evacuated, so that the suction force is greatly reduced, and the substrate 1 cannot be firmly adsorbed and must be replaced. Therefore, the double-layer structure design of the inner ring body 5 and the outer ring body 4 can effectively prolong the service life of the suction cup 10, and thus can indeed achieve the purpose of the invention.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

10: Suction cup 20: Exhaust device 100: pick claw 1: substrate 2: connecting rod 21: Wall 211: Piercing 22: pumping space 3: Ontology 31: Surface 32: Groove 33: Stop block 34: Vent 35: Airflow branch 4: Outer ring body 5: inner ring body S1: Internal adsorption space S2: Outer adsorption space

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: 1 is an incomplete schematic top view illustrating an embodiment of the suction cup with a double-layer structure of the present invention is installed on a picking claw for sucking a substrate; Figure 2 is a perspective view of the embodiment; Fig. 3 is a cross-sectional view taken from the section line III-III of Fig. 2 to illustrate the embodiment; and FIG. 4 is an incomplete cross-sectional view illustrating the state in which the substrate is adsorbed by this embodiment.

10: Suction cup

2: connecting rod

21: Wall

211: Piercing

22: pumping space

3: Ontology

31: Surface

32: Groove

33: Stop block

34: Vent

35: Airflow branch

4: Outer ring body

5: inner ring body

Claims (5)

A suction cup with a double-layer structure suitable for absorbing a substrate. The suction cup includes: A connecting rod, which is hollow and has a surrounding wall and a suction space defined by the surrounding wall; A body made of elastic material for the connecting rod to be inserted, and has a surface facing the substrate, and a groove communicating with the suction space is formed on the surface; An outer ring body made of elastic material and extending away from the body from the periphery of the surface; and An inner ring body made of elastic material and extending away from the body from the surface. The inner ring body surrounds the groove of the body and is spaced from the outer ring body. The body, the outer ring body and the inner ring body It is formed in one piece; When the sucker sucks the substrate, the outer ring body and the inner ring body abut the substrate and elastically deform, so that the inner ring body and the body define an inner suction space, the inner ring body, the outer ring body, and the The body defines an outer adsorption space, and the inner adsorption space and the outer adsorption space are separated by the inner ring body. The suction cup according to claim 1, wherein the surrounding wall of the connecting rod is provided with at least one through hole communicating with the suction space, and the surface of the body is formed with at least one vent hole separated from the groove and at least one Extends toward the connecting rod and communicates with the vent hole and the perforated air flow branch. The vent hole is located between the inner ring body and the outer ring body. The outer adsorption space passes through the vent hole, the air flow branch and the The perforation communicates with the suction space. The suction cup according to claim 1, wherein the body further has a plurality of stop blocks protruding from the surface and located in the inner ring body, the stop blocks are spaced apart from each other and surround the groove in a ring shape, when When the sucker sucks the substrate, the stop blocks abut the substrate to prevent the surface from contacting the substrate. The suction cup according to claim 2, wherein the surrounding wall is provided with a plurality of perforations, the surface forms a plurality of vent holes and a plurality of air flow branches, and the vent holes are arranged in a ring shape on the inner ring body and the outer ring Between the body. The suction cup according to claim 2, wherein the extension length of the inner ring body is smaller than the distance between the inner ring body and the outer ring body.

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