A porous rubber structure for a vacuum chuck and a vacuum chuck

Abstract

The utility model discloses a kind of porous rubber structure and vacuum chuck for vacuum chuck, wherein porous rubber structure for vacuum chuck includes chuck skeleton, the bottom of chuck skeleton buckle connection is limited to limit board, and air passage is formed between limit board and chuck skeleton, limit board is equipped with rubber outside, rubber is extended to limit board outside and buckle connection chuck skeleton around, rubber is distributed with several suction holes, limit board is equipped with several air guide holes of cooperation suction hole, suction hole is interconnected with air passage through air guide hole;The bottom of rubber is equipped with annular lip around, the inside of lip forms first suction cavity, the inner wall of lip forms inclined deformation surface, the inner diameter of deformation surface gradually increases along opening direction.

Description

Technical Field

[0001] This utility model relates to a vacuum suction cup, and more particularly to a porous rubber structure for a vacuum suction cup and a vacuum suction cup. Background Technology

[0002] The rubber structure currently used for vacuum suction cups, as shown in patent 202422321688.5, includes a rubber sheet fastened to the bottom of the suction cup frame. The inner side of the rubber sheet forms a suction chamber, and the suction chamber and air pump are connected through an air hole in the middle of the rubber sheet. The edges of the rubber sheet contact the surface of the object through a lip. During use, the air pump draws air from the suction chamber, creating a negative pressure. Simultaneously, the lip deforms inward under this negative pressure, tightly adhering to the surface of the object.

[0003] However, the aforementioned rubber sheet has certain drawbacks in its use. Firstly, due to its connection structure and suction method, it can only have a single pore in the center. This means the suction stability of the vacuum suction cup is directly related to this pore; if it is blocked or clogged, its suction function will fail, affecting the stability of the vacuum suction cup. Secondly, because the rubber sheet is made of flexible material, and the distance between the pore in the center and the edges is relatively large, excessive pressure from the operator during the suction process can easily cause the pore in the center to completely adhere to the surface of the object, while the edges are completely flattened and unable to provide support for the suction chamber, thus causing suction failure. Especially when suctioning rough-textured items, the operator inevitably needs to squeeze the vacuum suction cup to completely fill the gaps between the edges and the surface, preventing external air from entering through the connection gaps, further increasing the possibility of the pore being blocked.

[0004] Therefore, existing vacuum suction cups have the problem of poor adsorption effect when using rubber to adsorb onto the surface of objects. Utility Model Content

[0005] The purpose of this invention is to provide a porous rubber structure for vacuum suction cups and a vacuum suction cup itself. This structure improves the adsorption stability and effectiveness of the vacuum suction cup.

[0006] The technical solution of this utility model is as follows: A porous rubber structure for a vacuum suction cup includes a suction cup skeleton, a limiting plate fastened to the bottom of the suction cup skeleton, an air passage formed between the limiting plate and the suction cup skeleton, a rubber sheet on the outside of the limiting plate, the rubber sheet extending to the outside of the limiting plate and fastened to the suction cup skeleton, the middle of the rubber sheet fastening to the limiting plate, a plurality of suction holes distributed on the rubber sheet, a plurality of air guide holes provided on the limiting plate to match the suction holes, the suction holes communicating with the air passage through the air guide holes; an annular lip is provided around the bottom of the rubber sheet, the inner side of the lip forms a first suction cavity, the inner wall of the lip forms an inclined deformable surface, and the inner diameter of the deformable surface gradually increases along the opening direction.

[0007] In the aforementioned porous rubber structure for a vacuum suction cup, a fastening part is formed around the bottom perimeter of the suction cup skeleton, and the perimeter of the rubber is fastened to the fastening part via a fastening groove.

[0008] In the aforementioned porous rubber structure for a vacuum suction cup, the bottom of the fastening part is provided with an annular groove, and the rubber is fastened to the groove by a retaining ring around its perimeter.

[0009] In the aforementioned porous rubber structure for a vacuum suction cup, the outer side of the lip is provided with an annular first deformation groove.

[0010] In the aforementioned porous rubber structure for a vacuum suction cup, the middle part of the rubber is interlocked with the limiting plate.

[0011] In the aforementioned porous rubber structure for a vacuum suction cup, the suction hole includes a first suction hole and a second suction hole. The inner side of the first suction hole is connected to a first suction chamber, and the outer side of the second suction hole is provided with a lip ring for connecting the rubber, with the inner side of the lip ring forming a second suction chamber.

[0012] In the aforementioned porous rubber structure for a vacuum suction cup, each lip ring has annular reinforcing ribs on the rubber around it, adjacent reinforcing ribs are connected to each other, and the inner side of the reinforcing ribs forms several second deformation grooves that fit the lip rings.

[0013] A vacuum suction cup is also provided, which includes the aforementioned porous rubber structure for a vacuum suction cup.

[0014] Compared with the prior art, this utility model has the following characteristics: (1) The present invention uses the suction cup skeleton, the limiting plate and the rubber to form an air passage between the limiting plate and the suction cup skeleton, and uses the air passage to connect the suction holes on the rubber; so that when the vacuum suction cup is suctioning, the air in the first suction chamber can be drawn out through the suction holes and the air passage to achieve the negative pressure adsorption function; and when the outer wall of the rubber is in contact with the surface of the object, the air passage can still maintain a stable negative pressure environment, and the suction holes can be used to continuously suction the object, thereby improving the adsorption stability and adsorption effect of the present invention in this state. (2) Based on the above, the setting of the limiting plate can also limit the rubber, so that the rubber will not encroach on the space of the airway when it is indented by force, thus ensuring the airway has a negative pressure suction effect; furthermore, through the connection structure of the suction cup skeleton, the limiting plate and the rubber, the rubber can also be limited by the suction cup skeleton and the limiting plate, thereby avoiding the rubber from shifting under force and ensuring the complete connection between the suction hole and the air guide hole; (3) Through the cooperation of suction hole and lip ring, the rubber can form several independent second suction chambers at the bottom, and use each second suction chamber to adsorb the surface of the item; on this basis, when the lip edge or part of the lip ring is leaking, the remaining second suction chamber can maintain the suction effect on the item, thereby effectively avoiding the complete failure of the vacuum suction cup due to local air leakage, and further improving the adsorption stability and adsorption effect of the vacuum suction cup. Therefore, this invention can improve the adsorption stability and adsorption effect of vacuum suction cups. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of Example 1; Figure 2 yes Figure 1 A magnified view from direction A; Figure 3 This is a structural schematic diagram of Example 2; Figure 4 yes Figure 3 A magnified view from direction B; Figure 5 This is a view of the rubber side of Example 2; Figure 6 This is an external view of Example 3.

[0016] The markings in the attached diagram are as follows: 1-suction cup skeleton, 2-limiting plate, 3-air passage, 4-rubber, 5-suction hole, 6-air guide hole, 7-lip edge, 8-first suction chamber, 9-deformable surface, 10-fastening part, 11-fastening groove, 12-slot, 13-snap ring, 14-first deformation groove, 15-lip ring, 16-second suction chamber, 17-reinforcing rib, 18-second deformation groove, 501-first suction hole, 502-second suction hole. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0018] Example 1. A porous rubber structure for a vacuum suction cup, configured as follows: Figure 1-2 As shown, the device includes a suction cup frame 1. The bottom of the suction cup frame 1 is fastened to a limiting plate 2 via a stepped groove. An air passage 3 is formed between the limiting plate 2 and the suction cup frame 1. A rubber sheet 4 is provided on the outside of the limiting plate 2. The rubber sheet 4 extends to the outside of the limiting plate 2 and is fastened to the suction cup frame 1. Several suction holes 5 are distributed on the rubber sheet 4. Several air guide holes 6 are provided on the limiting plate 2 to match the suction holes 5. Each air guide hole 6 corresponds to one suction hole 5. The suction holes 5 are interconnected with the air passage 3 through the air guide holes 6. The bottom of the rubber sheet 4 is provided with an annular lip 7. The inner side of the lip 7 forms a first suction cavity 8. The inner wall of the lip 7 forms an inclined deformation surface 9. The inner diameter of the deformation surface 9 gradually increases along the opening direction.

[0019] The number of the lips 7 is one or more, and the multiple lips 7 are distributed in an inner and outer interval along the radial direction of the rubber 4.

[0020] The bottom perimeter of the suction cup frame 1 forms a fastening part 10. The perimeter of the rubber 4 is fastened to the fastening part 10 via the fastening groove 11. The inner wall of the rubber 4 is attached to the limiting plate 2 and the limiting plate 2 is squeezed by the elasticity, so that the limiting plate 2 is stably fastened in the suction cup frame 1.

[0021] The bottom of the fastening part 10 is provided with an annular groove 12. The rubber 4 is fastened to the groove 12 by a retaining ring 13. The suction cup frame 1 limits the rubber 4 radially by the mutual fastening of the retaining ring 13 and the groove 12.

[0022] The outer side of the lip edge 7 is provided with an annular first deformation groove 14. The first deformation groove 14 is used to avoid the lip edge 7 during deformation and adsorption, so that the lip edge 7 can be completely deformed under the suction action to ensure its adsorption effect.

[0023] The middle part of the rubber sheet 4 is fastened to the limiting plate 2.

[0024] In this embodiment, the structural cooperation between the suction cup frame 1 and the limiting plate 2 allows the inner side of the rubber 4 to form an air channel 3 for connecting each suction hole 5. Thus, when the vacuum suction cup is in use, the air pump can draw air from the first suction chamber 8 through the cooperation of the air channel 3 and each suction hole 5, achieving the suction function. Furthermore, when the user excessively presses the vacuum suction cup, causing the middle of the rubber 4 to adhere to the surface of the object, the air channel 3 can still maintain a stable negative pressure state and cooperate with each suction hole 5 to suction the object, thereby improving the suction effect of the vacuum suction cup.

[0025] Based on the above, by fastening the limiting plate 2 to the suction cup frame 1, the suction cup frame 1 can be used to radially limit the limiting plate 2; at the same time, by fastening the rubber 4 to the suction cup frame 1 via the slot 12 and the retaining ring 13, and fastening the middle part of the rubber 4 to the limiting plate 2, the limiting plate 2 and the suction cup frame 1 can be used to radially limit the rubber 4, thereby effectively ensuring the complete connection between the air guide hole 6 and the suction hole 5, and preventing the rubber 4 from shifting under force during use.

[0026] Example 2. A porous rubber structure for a vacuum suction cup, configured as follows: Figure 3-5 As shown, the device includes a suction cup frame 1. The bottom of the suction cup frame 1 is fastened to a limiting plate 2 via a stepped groove. An air passage 3 is formed between the limiting plate 2 and the suction cup frame 1. A rubber sheet 4 is provided on the outside of the limiting plate 2. The rubber sheet 4 extends to the outside of the limiting plate 2 and is fastened to the suction cup frame 1. Several suction holes 5 are distributed on the rubber sheet 4. Several air guide holes 6 are provided on the limiting plate 2 to match the suction holes 5. Each air guide hole 6 corresponds to one suction hole 5. The suction holes 5 are interconnected with the air passage 3 through the air guide holes 6. The bottom of the rubber sheet 4 is provided with an annular lip 7. The inner side of the lip 7 forms a first suction cavity 8. The inner wall of the lip 7 forms an inclined deformation surface 9. The inner diameter of the deformation surface 9 gradually increases along the opening direction.

[0027] The number of the lips 7 is one or more, and the multiple lips 7 are distributed in an inner and outer interval along the radial direction of the rubber 4.

[0028] The bottom perimeter of the suction cup frame 1 forms a fastening part 10. The perimeter of the rubber 4 is fastened to the fastening part 10 via the fastening groove 11. The inner wall of the rubber 4 is attached to the limiting plate 2 and the limiting plate 2 is squeezed by the elasticity, so that the limiting plate 2 is stably fastened in the suction cup frame 1.

[0029] The bottom of the fastening part 10 is provided with an annular groove 12. The rubber 4 is fastened to the groove 12 by a retaining ring 13. The suction cup frame 1 limits the rubber 4 radially by the mutual fastening of the retaining ring 13 and the groove 12.

[0030] The outer side of the lip 7 is provided with an annular first deformation groove 14 on the rubber 4.

[0031] The middle part of the rubber sheet 4 is fastened to the limiting plate 2.

[0032] The suction hole 5 includes a first suction hole 501 and a second suction hole 502. There is one first suction hole 501, and its inner side is connected to the first suction cavity 8. There are multiple second suction holes 502, which are evenly distributed around the first suction hole 501. The outer side of the second suction hole 502 is provided with a lip ring 15 for connecting rubber 4. The side wall of the lip ring 15 forms a second deformation surface with the same shape as the deformation surface 9. The bottom surface of the lip edge 7 is lower than the lip ring 15. The inner side of the lip ring 15 forms a second suction cavity 16. The second suction cavity 16 is located in the first suction cavity 8 and is separated from the first suction cavity 8 by the lip ring 15 during suction. Each second suction cavity 16 is separated from each other and independently adsorbs the surface of the object.

[0033] Each lip ring 15 has a hexagonal ring-shaped reinforcing rib 17 on the rubber 4 around it. Adjacent reinforcing ribs 17 are connected to each other, and the inner side of the reinforcing rib 17 forms several second deformation grooves 18 that fit the lip ring 15.

[0034] The first deformation groove 14 and the second deformation groove 18 are respectively used to avoid the lip edge 7 and the lip ring 15 during deformation and adsorption, so that the two can be completely deformed under the suction action to ensure their adsorption effect.

[0035] Compared with Embodiment 1, Embodiment 1 splits the suction hole 5 into a first suction hole 501 and a second suction hole 502, and provides an independent lip ring 15 on the outside of each second suction hole 502. This allows the vacuum suction cup to suction the air in the first suction chamber 8 through the cooperation of the air passage 3 and the first suction hole 501 during suction. At the same time, after the lip edge 7 contacts the surface of the object, it can suction the air in the second suction chamber 16 through the cooperation of the air passage 3 and the second suction hole 502. Thus, even when there is a gap at the point where the lip edge 7 is in contact with the object, the vacuum suction cup can still adsorb the object through each second suction chamber 16, thereby effectively improving the adsorption effect and stability of the object.

[0036] Example 3. Vacuum suction cup, configured as follows Figure 6 As shown, the vacuum suction cup includes a porous rubber structure for vacuum suction cups as described in Embodiment 1 or Embodiment 2. The suction cup skeleton 1 in the porous rubber structure for vacuum suction cups has a handle detachably connected to its top. One end of the handle forms an air extraction port that connects to the air passage 3. An air pump is provided inside the handle. The air pump extracts air through the cooperation of the air extraction port, the air passage 3, and the suction hole 5, so that the suction chamber is in a negative pressure state and adsorbs the object.

Claims

1. A porous rubber structure for a vacuum suction cup, characterized in that: The device includes a suction cup frame (1), a limiting plate (2) is fastened to the bottom of the suction cup frame (1), an air passage (3) is formed between the limiting plate (2) and the suction cup frame (1), a rubber sheet (4) is provided on the outside of the limiting plate (2), the rubber sheet (4) extends to the outside of the limiting plate (2) and is fastened to the suction cup frame (1), a number of suction holes (5) are distributed on the rubber sheet (4), a number of air guide holes (6) are provided on the limiting plate (2) to match the suction holes (5), the suction holes (5) are connected to the air passage (3) through the air guide holes (6); an annular lip (7) is provided around the bottom of the rubber sheet (4), a first suction cavity (8) is formed on the inner side of the lip (7), and an inclined deformation surface (9) is formed on the inner wall of the lip (7), the inner diameter of the deformation surface (9) gradually increases along the opening direction.

2. The porous rubber structure for a vacuum suction cup according to claim 1, characterized in that: The suction cup frame (1) has a fastening part (10) formed around its bottom perimeter, and the rubber (4) is fastened to the fastening part (10) via the fastening groove (11).

3. The porous rubber structure for a vacuum suction cup according to claim 2, characterized in that: The bottom of the fastening part (10) is provided with an annular groove (12), and the rubber (4) is fastened to the groove (12) by a retaining ring (13).

4. The porous rubber structure for a vacuum suction cup according to claim 1, characterized in that: The outer side of the lip (7) is provided with an annular first deformation groove (14) on the rubber (4).

5. The porous rubber structure for a vacuum suction cup according to claim 1, characterized in that: The middle part of the rubber sheet (4) is fastened to the limiting plate (2).

6. The porous rubber structure for a vacuum suction cup according to claim 1, characterized in that: The suction hole (5) includes a first suction hole (501) and a second suction hole (502). The inner side of the first suction hole (501) is connected to the first suction cavity (8). The outer side of the second suction hole (502) is provided with a lip ring (15) for connecting rubber (4). The inner side of the lip ring (15) forms the second suction cavity (16).

7. The porous rubber structure for a vacuum suction cup according to claim 6, characterized in that: Each lip ring (15) has an annular reinforcing rib (17) on the rubber (4) around it. Adjacent reinforcing ribs (17) are connected to each other, and the inner side of the reinforcing rib (17) forms several second deformation grooves (18) that match the lip ring (15).

8. A vacuum suction cup, characterized in that: The vacuum suction cup includes a porous rubber structure for a vacuum suction cup as described in any one of claims 1-7.

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