Rubber structure for vacuum chuck and vacuum chuck with replaceable rubber

Abstract

The rubber structure for the vacuum suction cup comprises a rubber sheet (1), an air hole (2) used for pumping and deflating air is formed in the middle of the rubber sheet (1), an annular lip edge (3) is arranged on the periphery of the rubber sheet (1), and an air pumping cavity (4) communicated with the air hole (2) is formed in the inner side of the lip edge (3). An annular flange (5) is arranged on the rubber sheet (1) on the outer side of the lip edge (3) and used for being connected with the vacuum suction cup in a buckled mode from the outer portion of the vacuum suction cup. The utility model has the characteristics that the rubber replacement cost is low, and the skeleton structure strength is high.

Description

Technical Field

[0001] The utility model relates to a vacuum suction cup, in particular to a rubber structure for a vacuum suction cup and a vacuum suction cup with replaceable rubber Background Art

[0002] The vacuum suction cup mainly consists of a skeleton, a handle and an air extraction pump. A cavity for air extraction is formed at the bottom of the skeleton. The inner side of the cavity is interconnected with the air extraction pump through an air extraction and discharge channel. During use, the vacuum suction cup is manually placed on an object by a worker, and the cavity is completely attached to the object surface. Then, the air extraction pump is turned on to extract air from the cavity area, so that the skeleton and the object are fixed to each other under a negative pressure state, facilitating the displacement of the worker. After the object is moved in place, the air extraction pump is turned off and the negative pressure in the cavity is released, thereby eliminating the connection force between the vacuum suction cup and the object. On this basis, in order to ensure the airtightness of the cavity area during air extraction, the manufacturer will also install rubber on the skeleton around the cavity, that is, the rubber is used to contact the object surface to form a seal, thereby avoiding air leakage problems caused by gaps at the connection

[0003] However, the defect of the existing vacuum suction cup is that in order to prevent the rubber from falling off, the rubber and the skeleton of the current vacuum suction cup are generally of a fixed structure and cannot be separated from each other. When the rubber wears and forms a notch after long-term use, resulting in poor sealing, the rubber and the skeleton need to be replaced as a whole, thus increasing the maintenance and replacement part costs of the vacuum suction cup

[0004] Secondly, in order to realize the cavity shape at the bottom of the skeleton, the skeleton will form an annular shell structure around the cavity area, and this structure will cause a reduction in the structural strength of the skeleton at the cavity position. Furthermore, during subsequent transportation, storage and use, problems such as compression deformation and cracking are likely to occur, or the rubber will have poor sealing after the skeleton is deformed. On the one hand, the stability and service life of the vacuum suction cup are reduced, and on the other hand, the vacuum suction cup cannot bear a large load force and has poor applicability

[0005] Therefore, the existing vacuum suction cup has problems of high rubber replacement cost and low structural strength of the skeleton Content of the Utility Model

[0006] The purpose of the utility model is to provide a rubber structure for a vacuum suction cup and a vacuum suction cup with replaceable rubber. It has the characteristics of low rubber replacement cost and high structural strength of the skeleton

[0007] The technical solution of the utility model: A rubber structure for a vacuum suction cup, including rubber. An air hole for air extraction and discharge is provided in the middle of the rubber. An annular lip is provided around the rubber. An air extraction cavity communicating with the air hole is formed inside the lip. An annular flanging is provided on the rubber outside the lip, and the flanging is used to snap-connect with the vacuum suction cup from the outside of the vacuum suction cup

[0008] In the rubber structure for a vacuum suction cup described above, an annular deformation opening is provided in the middle of the lip, and the lip below the deformation opening forms a bending part for deforming and fitting the object surface after the vacuum suction cup is evacuated.

[0009] In the rubber structure for a vacuum suction cup described above, a buffer part is connected inside the deformation opening, and the hardness of the buffer part is lower than that of the lip.

[0010] In the rubber structure for a vacuum suction cup described above, a handle for deflating is provided on the outer side of the lip.

[0011] A vacuum suction cup with a replaceable rubber sheet, wherein the vacuum suction cup includes the rubber structure for a vacuum suction cup described above.

[0012] In the vacuum suction cup with a replaceable rubber sheet described above, it includes a skeleton. A handle is provided at the top of the skeleton, and an installation plane is formed at the bottom of the skeleton. The periphery of the installation plane is connected with a rubber sheet through a buckling part. The upper end of the rubber sheet is wrapped outside the buckling part through a flanging and is buckled with the buckling part. The lower end of the rubber sheet extends below the installation plane through the lip and forms an evacuation chamber.

[0013] In the vacuum suction cup with a replaceable rubber sheet described above, the buckling part includes a buckling plate provided at the edge of the four sides of the skeleton. A flange is provided on the skeleton inside the buckling plate. The middle of the flanging is buckled and connected to the buckling plate through a buckling groove, and the inner side of the flanging extends to the inner end of the buckling plate and fits with the outer wall of the flange.

[0014] In the vacuum suction cup with a replaceable rubber sheet described above, an evacuation pump is detachably connected to the inside of the handle through an installation hole. An air extraction and release channel is provided inside the handle on one side of the installation hole. One end of the air extraction and release channel is communicated with the evacuation pump, and the other end of the air extraction and release channel is communicated with the evacuation chamber after passing through the skeleton and an air hole in sequence.

[0015] In the vacuum suction cup with a replaceable rubber sheet described above, the air hole is provided at the center of the rubber sheet. A first air passage groove is provided on the installation plane. The top of the first air passage groove is communicated with the air extraction and release channel. One end of the first air passage groove extends to the inside of the air hole and is communicated with the evacuation chamber, and the other end of the first air passage groove extends above the rubber sheet outside the air hole.

[0016] In the vacuum suction cup with a replaceable rubber sheet described above, a dust-proof cover located inside the rubber sheet is buckled and connected in the first air passage groove, and the air in the evacuation chamber enters the air extraction and release channel through the dust-proof cover after evacuation.

[0017] In the vacuum suction cup with a replaceable rubber sheet described above, the outside of the evacuation pump is connected to the installation hole through a positioning ring. The positioning ring is used for concentricity positioning of the installation hole and the evacuation pump, and a sealing ring is connected between the positioning ring and the installation hole.

[0018] In the aforementioned replaceable rubber sheet vacuum suction cup, the outer shape of the installation plane is circular or oval.

[0019] Compared with the prior art, the utility model has the following characteristics:

[0020] (1) Through the structural limitation of the rubber sheet, the rubber sheet can be buckled and connected to the outside of the vacuum suction cup during installation. Thus, when the rubber sheet is damaged and needs to be replaced, the user can directly peel off the rubber sheet from the vacuum suction cup and replace it, without replacing the suction cup skeleton, thereby effectively reducing the replacement cost of the rubber sheet.

[0021] (2) On this basis, through the limitation of the lip structure, an independent air extraction cavity can be formed inside the rubber sheet. Furthermore, the vacuum suction cup can realize the functions of installing the rubber sheet and evacuating the air only through a planar structure, that is, effectively improving the structural strength of the suction cup skeleton, reducing the possibility of the skeleton deforming under stress, and enabling the vacuum suction cup to bear a greater load force; when the installation surface of the vacuum suction cup forms a planar structure, the structural stability of the rubber sheet and the fitting effect between the rubber sheet and the installation plane can also be improved accordingly, that is, reducing the possibility of the rubber sheet deforming or having gaps due to improper installation during subsequent replacement and use.

[0022] (3) Through the structural cooperation of the deformation port and the bending part, the bending part can form a bend and closely adhere to the surface of the object during the pressing process, and can form local deformation along with the undulation of the object surface or under the action of suction force, thereby effectively improving the fitting tightness between the bending part and the object and reducing the possibility of gaps being generated between the rubber sheet and the object; through the setting of the buffer part, the lips on both sides of the deformation port can be separated from each other, thereby preventing the two sides of the lips from adhering to each other during use and causing the failure of their deformation effect. Moreover, since the hardness of the buffer part is lower than that of the lips, the bending part can overcome the elastic force of the buffer part and bend inward during use, ensuring the deformation adsorption effect of the bending part.

[0023] (4) On the above basis, through the limitation of the connection structure between the vacuum suction cup and the rubber sheet, the rubber sheet can be wrapped outside the buckling part during installation, and the connection tightness between the vacuum suction cup and the rubber sheet is improved by the cooperation of the buckling plate and the overlapping edge, that is, reducing the possibility of gaps or separation and detachment between the rubber sheet and the vacuum suction cup.

[0024] (5) Through the structural cooperation of the air extraction and release channel, the first air passing groove and the air hole, when the rubber sheet rotates to any circumferential position outside the skeleton, the air path between the air extraction cavity and the air extraction pump can be ensured to be connected, thereby effectively improving the use effect of the utility model after replacing the rubber sheet and reducing the difficulty for the user to replace the rubber sheet.

[0025] Therefore, the utility model has the characteristics of low rubber sheet replacement cost and high skeleton structural strength. Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of the rubber structure in Embodiment 1;

[0027] Figure 2 is Figure 1 an enlarged view in the direction A of

[0028] Figure 3 is a schematic structural diagram of the vacuum chuck in Embodiment 1;

[0029] Figure 4 is Figure 3 an enlarged view in the direction B of

[0030] Figure 5 is Figure 3 an enlarged view in the direction C of

[0031] Figure 6 is an external view of the vacuum chuck in Embodiment 1 at the installation plane;

[0032] Figure 7 is Figure 6 the external view after removing the rubber;

[0033] Figure 8 is a schematic structural diagram of the rubber structure in Embodiment 2;

[0034] Figure 9 is an external view of the vacuum chuck in Embodiment 2;

[0035] Figure 10 is a schematic structural diagram of the vacuum chuck in Embodiment 2 after removing the air extraction pump;

[0036] Figure 11 is the external view of the vacuum chuck in Embodiment 2 after removing the rubber.

[0037] The reference signs in the drawings are: 1 - rubber, 2 - air hole, 3 - lip, 4 - air extraction cavity, 5 - flanging, 6 - deformation port, 7 - bending part, 8 - buffer part, 9 - skeleton, 10 - handle, 11 - installation plane, 12 - buckle plate, 13 - overlapping edge, 14 - installation hole, 15 - air extraction pump, 16 - air extraction and discharge channel, 17 - first air passing groove, 18 - dust cover, 19 - positioning ring, 20 - negative pressure gauge, 21 - second air passing groove, 131 - conical surface. Detailed Embodiment

[0038] The present utility model will be further described below in conjunction with the drawings and embodiments, but it shall not be used as a basis for limiting the present utility model.

[0039] Embodiment 1. A rubber structure for a vacuum chuck, the composition is as Figure 1-2As shown in the figure, it includes a rubber sheet 1 with an elliptical outer shape. An air hole 2 for air extraction and discharge is provided in the middle of the rubber sheet 1. A circular lip 3 is provided around the rubber sheet 1. An air extraction cavity 4 communicating with the air hole 2 is formed inside the lip 3. A circular flange 5 is provided on the rubber sheet 1 outside the lip 3. The flange 5 is used to snap-connect to the vacuum chuck from the outside of the vacuum chuck. The rubber sheet 1, the lip 3, and the flange 5 are made of natural rubber + cis-butadiene rubber and are integrally formed. The tensile strength of the rubber sheet 1 is greater than 14 Mpa, the Shore hardness is 50 - 70, and the rubber content is more than 45%.

[0040] Two or more sealing strips are arranged side by side along the radial direction around the bottom of the lip 3. The adjacent sealing strips are separated from each other, so as to improve the fitting effect on the surface of the object by using the sealing strips.

[0041] A circular deformation opening 6 is provided in the middle of the lip 3. The outer shape of the deformation opening 6 is U-shaped and one end is communicated with the outside. The lip 3 below the deformation opening 6 forms a bending part 7 for fitting the surface of the object through overall bending and / or local deformation after the vacuum chuck extracts air. The sealing strips are distributed around the bottom of the bending part 7.

[0042] A buffer part 8 is snap-connected inside the deformation opening 6. The buffer part 8 is made of a flexible material and has a lower hardness than the lip 3.

[0043] A handle for air release is provided outside the lip 3.

[0044] It also includes a vacuum chuck with a rubber sheet structure for a vacuum chuck. The vacuum chuck is configured as Figure 3-7 As shown in the figure, it includes a skeleton 9. The outer shape of the skeleton 9 is an elliptical disk shape. A handle 10 is provided at the top of the skeleton 9. The handle 10 and the skeleton 9 are arranged in a split manner and are connected to each other by screws. The outer shape of the handle 10 is U-shaped. An installation plane 11 is formed at the bottom of the skeleton 9. The rubber sheet 1 is connected to the installation plane 11 through a snap-fastening part around the periphery. The upper end of the rubber sheet 1 is wrapped outside the snap-fastening part through the flange 5 and is snap-fastened to the snap-fastening part. The lower end of the rubber sheet 1 extends below the installation plane 11 through the lip 3 and forms an air extraction cavity 4 for vacuum extraction.

[0045] The snap-fastening part includes a snap-fastening plate 12 provided at the edge of the four sides of the skeleton 9. A lapping edge 13 is provided on the skeleton 9 inside the snap-fastening plate 12. The middle of the flange 5 is snap-fastened to the snap-fastening plate 12 through a snap-fastening groove. The inner side of the flange 5 extends to the inner end of the snap-fastening plate 12 and is mutually attached to the outer wall of the lapping edge 13.

[0046] The lapping edge 13 forms a tapered surface 131 that is narrow at the top and wide at the bottom at the joint with the flange 5. The inner wall of the flange 5 is completely attached to the tapered surface 131 after installation.

[0047] On the inner side of the handle 10, an air extraction pump 15 is detachably connected through an installation hole 14. Inside the handle 10 on one side of the installation hole 14, an air extraction and discharge channel 16 is provided. One end of the air extraction and discharge channel 16 communicates with the air extraction pump 15, and the other end of the air extraction and discharge channel 16 sequentially passes through the framework 9 and the air hole 2 and then communicates with the air extraction cavity 4. The installation hole 14 is of a blind hole structure and communicates with the outside at one end far from the air extraction and discharge channel 16 and is used for installing the air extraction pump 15.

[0048] The air hole 2 is arranged at the center of the rubber sheet 1. On the installation plane 11, a first air passing groove 17 is provided. The top of the first air passing groove 17 communicates with the air extraction and discharge channel 16. One end of the first air passing groove 17 extends to the inside of the air hole 2 and communicates with the air extraction cavity 4, and the other end of the first air passing groove 17 extends above the rubber sheet 1 outside the air hole 2.

[0049] At one end close to the rubber sheet 1, the first air passing groove 17 is buckled and connected with a dust-proof cover 18 with the functions of air permeability and dust prevention through a circular step groove. The thickness of the dust-proof cover 18 is less than the depth of the first air passing groove 17. The air in the air extraction cavity 4 enters the air extraction and discharge channel 16 after passing through the dust-proof cover 18 during air extraction. The dust-proof cover 18 can avoid impurities in the air extraction cavity 4 from entering the air extraction and discharge channel 16 and causing blockage during use. The dust-proof cover 18 is located inside the rubber sheet 1 in the height direction, so as to limit the dust-proof cover 18 by the cooperation of the first air passing groove 17 and the rubber sheet 1 and avoid the falling of the dust-proof cover 18.

[0050] The outside of the air extraction pump 15 is connected to the installation hole 14 through a positioning ring 19. The positioning ring 19 is used for concentric positioning of the installation hole 14 and the air extraction pump 15. A sealing ring can be arranged between the positioning ring 19 and the installation hole 14 as needed. The installation position of the positioning ring 19 is the same as that of the positioning ring 19 in Embodiment 2.

[0051] During the use of this embodiment, the operator places the vacuum suction cup on an object through the handle 10 and makes the bent part 7 at the lower end of the rubber sheet 1 completely fit the surface of the object to form a seal. After the vacuum suction cup is placed, the operator turns on the air extraction pump 15, and the air extraction pump 15 sucks the air in the air extraction cavity 4 through the air extraction and discharge channel 16, the first air passing groove 17 and the air hole 2, so as to form a negative pressure environment in the air extraction cavity 4, and the object is adsorbed on the vacuum suction cup under the action of the negative pressure, which is convenient for the operator to carry the object. During the air extraction of the vacuum suction cup, the bent part 7 will be bent and deformed under the external pressure or the suction force from the air extraction cavity 4, so as to ensure that the bent part 7 closely adheres to the surface of the object during the adsorption process and reduce the possibility of mutual separation or generation of gaps between the two.

[0052] After the object is moved into place, the operator turns off the air extraction pump 15 to eliminate the negative pressure in the air extraction chamber 4, and the object is separated from the vacuum suction cup. When there is accumulated water at the joint between the object and the rubber sheet 1, causing the vacuum suction cup to still not be removable after the negative pressure is released, the operator can lift the rubber sheet 1 unilaterally through the handle, and the separation function can be achieved.

[0053] When the rubber sheet 1 is damaged and needs to be replaced after long-term use, the user can directly peel off the rubber sheet 1 from the buckling part outside the skeleton 9, and buckle the rubber sheet 1 to be replaced back to the buckling part in the same way after opening the flanging 5, so that the rubber sheet 1 can be replaced separately, effectively reducing the replacement cost of the rubber sheet 1.

[0054] Embodiment 2. A rubber sheet structure for a vacuum suction cup, the structure is as Figure 8 shown, including a circular rubber sheet 1, a gas hole 2 for air extraction and discharge is provided in the middle of the rubber sheet 1, a circular lip 3 is provided around the rubber sheet 1, an air extraction chamber 4 communicating with the gas hole 2 is formed inside the lip 3, a circular flanging 5 is provided on the rubber sheet 1 outside the lip 3, the flanging 5 is used to buckle and connect the vacuum suction cup from the outside of the vacuum suction cup, and the materials of the rubber sheet 1, the lip 3 and the flanging 5 are all rubber and integrally formed.

[0055] A circular deformation opening 6 is provided in the middle of the lip 3, the outer shape of the deformation opening 6 is U-shaped and one end communicates with the outside, and the lip 3 below the deformation opening 6 forms a bending part 7 for fitting the surface of the object through overall bending and / or local deformation after the vacuum suction cup extracts air, and the sealing strips are distributed around the bottom of the bending part 7.

[0056] A buffer part 8 is buckled and connected in the deformation opening 6, and the buffer part 8 is made of a flexible material and has a lower hardness than the lip 3.

[0057] Two or more sealing strips are arranged side by side along the radial direction around the bottom of the lip 3, and the adjacent sealing strips are separated from each other, so as to improve the fitting effect on the surface of the object by using the sealing strips.

[0058] A handle for air release is provided outside the lip 3.

[0059] It also includes a vacuum suction cup with a rubber sheet structure for a vacuum suction cup, the structure is as Figure 9-11 shown, the vacuum suction cup includes a skeleton 9, the outer shape of the skeleton 9 is disc-shaped, a handle 10 is provided at the top of the skeleton 9, the handle 10 and the skeleton 9 are arranged in a split manner and are connected to each other by screws, the outer shape of the handle 10 is U-shaped, an installation plane 11 is formed at the bottom of the skeleton 9, and the rubber sheet 1 is connected to the installation plane 11 through a buckling part around the periphery, and the upper end of the rubber sheet 1 is wrapped outside the buckling part through the flanging 5 and buckled with the buckling part, and the lower end of the rubber sheet 1 extends below the installation plane 11 through the lip 3 and forms an air extraction chamber 4 for vacuum extraction.

[0060] The buckling part includes a buckling plate 12 arranged at the four peripheral edges of the skeleton 9. A flange 13 is arranged on the skeleton 9 inside the buckling plate 12. The middle part of the flanging 5 is buckled and connected to the buckling plate 12 through a buckling groove. The inner side of the flanging 5 extends to the inner end of the buckling plate 12 and is mutually attached to the outer wall of the flange 13.

[0061] The inside of the handle 10 is detachably connected with an air extraction pump 15 through an installation hole 14. An air extraction and exhaust channel 16 is arranged inside the handle 10 on one side of the installation hole 14. One end of the air extraction and exhaust channel 16 is communicated with the air extraction pump 15, and the other end of the air extraction and exhaust channel 16 sequentially passes through the skeleton 9 and the air hole 2 and is communicated with the air extraction cavity 4; the installation hole 14 is of a blind hole structure, and the installation hole 14 is communicated with the outside at one end far from the air extraction and exhaust channel 16 and is used for installing the air extraction pump 15.

[0062] The air hole 2 is arranged at the center of the rubber sheet 1. A first air passing groove 17 is arranged on the installation plane 11. The top of the first air passing groove 17 is communicated with the air extraction and exhaust channel 16. One end of the first air passing groove 17 extends to the inside of the air hole 2 and is communicated with the air extraction cavity 4, and the other end of the first air passing groove 17 extends above the rubber sheet 1 outside the air hole 2.

[0063] The outside of the air extraction pump 15 is connected to the installation hole 14 through a positioning ring 19. The positioning ring 19 is used for positioning the concentricity of the installation hole 14 and the air extraction pump 15. A sealing ring is connected between the positioning ring 19 and the installation hole 14.

[0064] An interface is arranged at the top of the skeleton 9. A negative pressure gauge 20 is arranged on the interface. A second air passing groove 21 is arranged on the installation plane 11 at the bottom of the skeleton 9. The second air passing groove 21 and the first air passing groove 17 are arranged in a mutually staggered manner. One end of the second air passing groove 21 extends inwards into the inner hole of the rubber sheet 1, and the other end of the second air passing groove 21 is communicated with the interface. When the air extraction pump 15 extracts air, the negative pressure value in the air extraction cavity 4 can be displayed through the negative pressure gauge 20, so that the operator can intuitively see whether the vacuum suction cup is firmly combined with the object surface during the operation.

[0065] Compared with Embodiment 1, in this embodiment, the outer shapes of the rubber sheet 1 and the skeleton 9 are made circular, and the stable use of the vacuum suction cup can also be realized. On this basis, through the cooperative setting of the second air passing groove 21 and the negative pressure gauge 20, the operator can observe the negative pressure state in the air extraction cavity 4 through the negative pressure gauge 20 during the operation process, thereby improving the use effect of the vacuum suction cup.

Claims

1. A rubber structure for a vacuum suction cup, characterized in that: The rubber (1) comprises a rubber (1), wherein an air hole (2) for extracting and releasing air is provided in the middle of the rubber (1), an annular lip (3) is provided around the rubber (1), an air extraction cavity (4) communicating with the air hole (2) is formed on the inner side of the lip (3), and an annular flange (5) is provided on the rubber (1) outside the lip (3), and the flange (5) is used for buckling and connecting the vacuum suction cup from the outside of the vacuum suction cup.

2. The rubber structure for a vacuum suction cup according to claim 1, characterized in that: An annular deformation opening (6) is provided in the middle of the lip edge (3), and a bending portion (7) is formed at the lip edge (3) below the deformation opening (6) for deforming and fitting to the surface of an object after the vacuum suction cup is evacuated.

3. A rubber structure for a vacuum suction cup according to claim 2, characterized in that: The deformation opening (6) is connected to a buffer portion (8), and the hardness of the buffer portion (8) is lower than that of the lip edge (3).

4. The vacuum cup with replaceable rubber is characterized by: The vacuum suction cup comprises a rubber structure for a vacuum suction cup as described in any one of claims 1-3.

5. The vacuum suction cup with replaceable rubber according to claim 4, characterized in that: The invention comprises a frame (9), a handle (10) is arranged on the top of the frame (9), a mounting plane (11) is formed on the bottom of the frame (9), a rubber (1) is connected to the mounting plane (11) via a buckling portion around the mounting plane (11), the upper end of the rubber (1) is wrapped around the outer side of the buckling portion via a flange (5) and buckled with the buckling portion, and the lower end of the rubber (1) extends to the bottom of the mounting plane (11) via a lip (3) and forms an air extraction cavity (4).

6. The vacuum suction cup with replaceable rubber according to claim 5, characterized in that: The buckling portion comprises a buckle plate (12) arranged at the edges of the frame (9), a lap edge (13) is provided on the frame (9) inside the buckle plate (12), the middle part of the flange (5) is buckled and connected to the buckle plate (12) through a buckle groove, and the inner side of the flange (5) extends to the inner end of the buckle plate (12) and fits with the outer wall of the lap edge (13).

7. The vacuum suction cup with replaceable rubber according to claim 5, characterized in that: The inner side of the handle (10) is detachably connected to an air pump (15) via a mounting hole (14); an air extraction and discharge passage (16) is provided in the handle (10) on one side of the mounting hole (14); one end of the air extraction and discharge passage (16) is communicated with the air extraction pump (15); and the other end of the air extraction and discharge passage (16) is communicated with the air extraction chamber (4) after passing through the frame (9) and the air hole (2) in sequence.

8. The vacuum suction cup with replaceable rubber according to claim 7, characterized in that: The air hole (2) is arranged at the center of the rubber (1), and a first air passage groove (17) is arranged on the mounting plane (11). The top of the first air passage groove (17) is connected to the air extraction and discharge passage (16), one end of the first air passage groove (17) extends to the inside of the air hole (2) and is connected to the air extraction cavity (4), and the other end of the first air passage groove (17) extends to the top of the rubber (1) outside the air hole (2).

9. The vacuum suction cup with replaceable rubber according to claim 7, characterized in that: The outside of the air extraction pump (15) is connected to the mounting hole (14) via a positioning ring (19); the positioning ring (19) is used to perform concentric positioning of the mounting hole (14) and the air extraction pump (15); a sealing ring is connected between the positioning ring (19) and the mounting hole (14).

10. The vacuum suction cup with replaceable rubber according to claim 5, characterized in that: The outer shape of the installation plane (11) is circular or elliptical.

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