Vacuum suction cup for plastic film and carton mixed sorting

Abstract

The utility model relates to vacuum adsorption and automatic grabbing technical field, concretely is a vacuum chuck for plastic film and paper box mixed sorting, including vacuum chuck subassembly, the vacuum chuck subassembly includes suction disc body, stepped sponge and vacuum cavity, the surface of suction disc body and stepped sponge is provided with convenient replacement mechanism, the surface of vacuum suction tube and connecting pipe is provided with high sealing mechanism. The utility model not only can increase vacuum adsorption flow when vacuum chuck uses, to satisfy the adsorption ability of different product weight, increased the deformation of stepped sponge, the wrapping effect of big -size article is better, the degree of fit is more supple, can guarantee the air tightness of vacuum suction tube and connecting pipe between connection, and can guarantee the performance of vacuum chuck subassembly when vacuum chuck uses, prolongs the service life of vacuum chuck subassembly, and compared with the shutdown maintenance caused by the problem of vacuum chuck subassembly, the cost of replacing stepped sponge is lower.

Description

Technical Field

[0001] This utility model relates to the field of vacuum adsorption and automated gripping technology, specifically a vacuum suction cup for sorting mixed plastic film and cardboard boxes. Background Technology

[0002] In automated production lines, traditional rigid vacuum suction cups are unsuitable for workpieces with uneven, porous, or flexible materials due to their extremely high requirements for the flatness of the surface of the object being suctioned. However, with the increasing demands for gripping accuracy, efficiency, and adaptability in intelligent manufacturing, existing vacuum sponge suction cups have revealed their shortcomings in adapting to surfaces with large unevenness and lack of stability during high-speed operation. In order to meet market needs, there is a current need for vacuum suction cups for sorting mixed plastic films and cartons.

[0003] Existing vacuum suction cups have insufficient suction power, resulting in reduced vacuum flow rate and an inability to handle products of varying weights. Furthermore, they reduce the deformation of the stepped sponge, leading to poor wrapping and less smooth fit for large objects. The sealing performance of existing vacuum suction cups needs improvement, as it compromises the airtightness of the connection between the vacuum tube and the connecting tube, reducing suction power for plastic films and cardboard boxes. Additionally, replacing the stepped sponge is inconvenient, compromising the performance of the vacuum suction cup assembly, shortening its lifespan, and increasing maintenance costs. Utility Model Content

[0004] The purpose of this invention is to provide a vacuum suction cup for sorting plastic film and cardboard boxes, in order to solve the problems mentioned in the background art, such as insufficient suction force, need for further improvement in sealing, and inconvenience in replacing stepped sponges.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vacuum suction cup for sorting mixed plastic film and cardboard boxes, comprising a vacuum suction cup assembly, wherein the vacuum suction cup assembly includes a suction cup body, a stepped sponge, and a vacuum chamber. The stepped sponge is disposed below the suction cup body, and a vacuum chamber is installed on the surface of the top center position of the suction cup body. The vacuum chamber is connected to the interior of the suction cup body. A connecting tube is installed on the surface of the top position of the vacuum chamber, and a vacuum suction tube is disposed on the surface of the connecting tube. The surfaces of the suction cup body and the stepped sponge are provided with a convenient replacement mechanism, and the surfaces of the vacuum suction tube and the connecting tube are provided with a high sealing mechanism.

[0006] Preferably, the surfaces of the vacuum suction tube and the connecting tube are threaded together, the vacuum chamber, the vacuum suction tube and the connecting tube are connected internally, two sets of robotic arms are arranged above the vacuum chamber, two sets of mounting plates are symmetrically mounted on the surface of the robotic arms, two sets of plates are arranged on the surface at the top position of the vacuum chamber, the plates are connected to the vacuum chamber by screws, and the plates are connected to the mounting plates by mounting studs.

[0007] Preferably, a spring is fitted onto the surface of the mounting stud, the bottom end of the spring is fixed to the surface of the plate, the top end of the spring is in contact with the surface at the bottom of the mounting plate, two sets of sliders are symmetrically mounted on the surface at the bottom of the plate, and a guide rail is provided on the surface of the vacuum cavity for sliding cooperation with the sliders.

[0008] Preferably, the easy-to-replace mechanism includes a positioning groove on the surface of the suction cup body, a positioning element on the surface of the stepped sponge, a groove on the surface of the suction cup body, a high-adhesion adhesive on the inner wall of the groove, and an adhesive layer on the surface of the stepped sponge.

[0009] Preferably, four sets of positioning elements are symmetrically installed on the surface of the stepped sponge, a positioning groove is formed on the surface at the bottom of the suction cup body for engaging with the positioning elements, a groove is formed on the surface at the bottom of the suction cup body, a high-adhesion adhesive is installed on the inner wall of the groove, an adhesive layer is installed on the surface at the top of the stepped sponge, and the top of the adhesive layer extends into the interior of the groove and adheres to the surface of the high-adhesion adhesive.

[0010] Preferably, the high-sealing mechanism includes a sealing ring disposed on the surface of the vacuum suction tube, a nail disposed on the surface of the sealing ring for connecting the sealing ring and the vacuum suction tube, a sealing groove disposed on the inner wall of the sealing ring, and an air bladder disposed on the surface of the connecting tube.

[0011] Preferably, a sealing ring is provided on the surface of the bottom position of the vacuum straw, and the sealing ring is connected to the vacuum straw by a nail. A sealing groove is provided on the inner wall of the sealing ring. An air bladder is installed on the surface of the connecting tube to seal the vacuum straw and the connecting tube to prevent air leakage. The air bladder moves to the inner wall of the sealing groove and comes into close contact with the inner wall of the sealing groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The vacuum suction cup for sorting plastic film and cardboard boxes not only increases the vacuum suction flow rate to meet the suction capacity of different product weights, but also increases the deformation of the stepped sponge, resulting in better wrapping effect for large-sized objects and a smoother fit. This ensures the airtightness of the connection between the vacuum suction tube and the connecting tube, making the suction force of the vacuum suction cup stronger for plastic film and cardboard boxes. Furthermore, it ensures the performance of the vacuum suction cup assembly and extends its service life. Compared with downtime maintenance caused by problems with the vacuum suction cup assembly, the cost of replacing the stepped sponge is lower.

[0013] 1. By incorporating a stepped sponge, the vacuum suction cup assembly features a hollow, large-diameter design, increasing the vacuum adsorption flow rate to meet the adsorption capacity requirements of products of varying weights. The increased thickness of the stepped sponge makes it suitable for adsorbing objects with uneven surfaces. The stepped shape of the sponge also increases its deformation capacity, resulting in better wrapping of large objects and a smoother fit. This achieves the high adsorption capacity of the vacuum suction cup, allowing for increased vacuum adsorption flow rate to meet the adsorption capacity requirements of products of varying weights. Furthermore, the increased deformation capacity of the stepped sponge provides better wrapping of large objects and a smoother fit.

[0014] 2. With a highly sealing mechanism, the user installs the sealing ring on the surface of the vacuum suction tube by tightening the nails on the surface of the sealing ring. When the vacuum suction tube connects with the surface of the connecting tube, the sealing ring on the surface of the vacuum suction tube moves to the surface of the connecting tube, the connecting tube protrudes outward below the airbag, and the airbag moves to the inner wall of the sealing groove. With continuous inflation, the sealing performance between the vacuum suction tube and the connecting tube becomes stronger through the cooperation of the airbag and the sealing groove. The joint action of the sealing ring and the airbag can seal the connection between the vacuum suction tube and the connecting tube, avoiding the phenomenon that the vacuum suction cup assembly's adsorption force on plastic film and cardboard boxes is reduced due to air leakage at the connection between the vacuum suction tube and the connecting tube. This achieves the high sealing performance of the vacuum suction cup, ensuring the airtightness of the connection between the vacuum suction tube and the connecting tube during use, and making the vacuum suction cup's adsorption force on plastic film and cardboard boxes stronger during use.

[0015] 3. With a convenient replacement mechanism, the user can pull down the stepped sponge, causing it to move the positioning component away from the inside of the positioning groove. Then, as the user pulls the stepped sponge further away from the suction cup body, it moves the adhesive layer away from the highly adhesive surface of the inner wall of the groove, allowing the adhesive layer to be peeled off. The stepped sponge can then be removed from the suction cup body for replacement. This facilitates easy replacement of the stepped sponge in the vacuum suction cup, ensuring the performance of the vacuum suction cup assembly and extending its lifespan. Compared to downtime caused by problems with the vacuum suction cup assembly, replacing the stepped sponge is less costly. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a top view of the external structure of this utility model;

[0018] Figure 3 This is a bottom-view cross-sectional structural diagram of the present invention;

[0019] Figure 4 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0020] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point B;

[0021] Figure 6 For the present utility model Figure 4 Enlarged structural diagram at point A;

[0022] Figure 7 For the present utility model Figure 4 Enlarged structural diagram of a medium-to-high sealing mechanism.

[0023] In the diagram: 1. Vacuum suction cup assembly; 11. Suction cup body; 12. Stepped sponge; 13. Vacuum chamber; 14. Vacuum suction tube; 15. Connecting tube; 16. Plate; 17. Mounting plate; 18. Mounting stud; 19. Screw; 110. Spring; 111. Slider; 112. Guide rail; 101. Robotic arm; 2. Easy-to-replace mechanism; 21. Adhesive layer; 22. Positioning component; 23. Positioning groove; 24. Groove body; 25. High adhesive; 3. High sealing mechanism; 31. Nail body; 32. Sealing groove; 33. Sealing ring; 34. Airbag. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. In addition, the terms "first", "second", "third", "upper", "lower", "left", "right", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance. At the same time, in the description of the present utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0025] The structure of the vacuum suction cup for sorting plastic film and cardboard boxes provided by this utility model is as follows: Figures 1 to 5 As shown, the system includes a vacuum suction cup assembly 1, which comprises a suction cup body 11, a stepped sponge 12, and a vacuum chamber 13. The stepped sponge 12 is disposed below the suction cup body 11. The vacuum chamber 13 is mounted on the surface at the top center of the suction cup body 11 and is connected to the interior of the suction cup body 11. A connecting tube 15 is mounted on the surface at the top of the vacuum chamber 13, and a vacuum suction tube 14 is disposed on the surface of the connecting tube 15. The surfaces of the vacuum suction tube 14 and the connecting tube 15 are threaded together. The interiors of the vacuum chamber 13, the vacuum suction tube 14, and the connecting tube 15 are connected. Two sets of robotic arms 10 are disposed above the vacuum chamber 13. 1. Two sets of mounting plates 17 are symmetrically mounted on the surface of the robotic arm 101. Two sets of plates 16 are provided on the surface of the top position of the vacuum chamber 13. The plates 16 are connected to the vacuum chamber 13 by screws 19. The plates 16 are connected to the mounting plates 17 by mounting studs 18. A spring 110 is fitted on the surface of the mounting studs 18. The bottom end of the spring 110 is fixed to the surface of the plate 16. The top end of the spring 110 is in contact with the surface of the bottom position of the mounting plate 17. Two sets of sliders 111 are symmetrically mounted on the surface of the bottom position of the plate 16. A guide rail 112 is provided on the surface of the vacuum chamber 13 for sliding cooperation with the sliders 111.

[0026] The vacuum suction cup assembly 1 of this utility model adopts a hollow, large-diameter design, which increases the vacuum adsorption flow rate to meet the adsorption capacity of products of different weights. At the same time, the thickness of the stepped sponge 12 is increased to 120mm. This design is suitable for adsorbing objects with concave and convex shapes. Based on the deformability of the stepped sponge 12, it is suitable for adsorbing objects with a bottleneck of 100mm. Since the stepped shape of the stepped sponge 12 adopts a stepped design, this design increases the deformation of the stepped sponge 12, resulting in a better wrapping effect for large-sized objects and a smoother fit, so as to achieve the function of high adsorption force of the vacuum suction cup.

[0027] Specifically, the vacuum suction tube 14 is connected to the vacuum generator. When gripping is required, the vacuum generator extracts air from the suction cup body 11 through the vacuum suction tube 14 and the connecting tube 15, creating a negative pressure environment. The stepped sponge 12 at the bottom of the suction cup body 11 makes contact with the object surface. The air pressure inside the suction cup body 11 is lower than the external atmospheric pressure. The atmospheric pressure presses the object tightly against the bottom of the stepped sponge 12. The elastic deformation of the stepped sponge 12 adheres to the object surface to form a seal, thereby achieving the gripping function. Subsequently, the vacuum generator continues to work, maintaining the negative pressure, thus ensuring stable adsorption of the object. When the vacuum generator is turned off, the air pressure inside the suction cup body 11 returns to normal, and the object detaches. It can then be used to grip plastic film and cardboard boxes. It can grip a wide range of object sizes, from 155*235mm to 300*500mm, and weigh 1-25kg. It has a low clogging rate, fast response, small adsorption fluctuations, and high compatibility with various application environments.

[0028] Furthermore, such as Figure 4 and Figure 6 As shown, the suction cup body 11 and the stepped sponge 12 are provided with a convenient replacement mechanism 2. The convenient replacement mechanism 2 includes a positioning groove 23 on the surface of the suction cup body 11, a positioning element 22 on the surface of the stepped sponge 12, a groove 24 on the surface of the suction cup body 11, a high-adhesion adhesive 25 on the inner wall of the groove 24, and an adhesive layer 21 on the surface of the stepped sponge 12. Four sets of positioning elements 22 are symmetrically installed on the surface of the stepped sponge 12. The bottom position of the suction cup body 11 has a positioning groove 23 for engaging with the positioning element 22. The bottom position of the suction cup body 11 has a groove 24. The inner wall of the groove 24 is covered with high-adhesion adhesive 25. The top position of the stepped sponge 12 has an adhesive layer 21. The top of the adhesive layer 21 extends into the interior of the groove 24 and adheres to the surface of the high-adhesion adhesive 25.

[0029] During implementation, the user pulls the stepped sponge 12 downwards, causing it to move the positioning element 22 away from the interior of the positioning groove 23. At this time, as the user pulls the stepped sponge 12 away from the bottom of the suction cup body 11, the stepped sponge 12 moves the adhesive layer 21 away from the surface of the high-adhesion adhesive 25 on the inner wall of the groove 24, allowing the adhesive layer 21 to be peeled off from the surface of the high-adhesion adhesive 25. The stepped sponge 12 can then be removed from the surface of the suction cup body 11 and replaced. The replaced stepped sponge 12 is then placed... The stepped sponge 12 is placed at the bottom of the suction cup body 11. The positioning member 22 is engaged with the positioning groove 23. The engagement between the positioning member 22 and the positioning groove 23 allows for quick positioning of the stepped sponge 12. The stepped sponge 12 moves the adhesive layer 21 to adhere to the surface of the high-adhesion adhesive 25 on the inner wall of the groove 24. The adhesive layer 21 and the high-adhesion adhesive 25 adhere the stepped sponge 12 to the bottom of the suction cup body 11, thus enabling the vacuum suction cup to easily replace the stepped sponge 12.

[0030] Furthermore, such as Figure 4 and Figure 7 As shown, a high-sealing mechanism 3 is provided on the surfaces of the vacuum straw 14 and the connecting tube 15. The high-sealing mechanism 3 includes a sealing ring 33 on the surface of the vacuum straw 14, a nail 31 on the surface of the sealing ring 33 for connecting the sealing ring 33 and the vacuum straw 14, a sealing groove 32 on the inner wall of the sealing ring 33, and an airbag 34 on the surface of the connecting tube 15. The sealing ring 33 is provided on the surface at the bottom of the vacuum straw 14. The sealing ring 33 is connected to the vacuum straw 14 by the nail 31. The sealing groove 32 is provided on the inner wall of the sealing ring 33. An airbag 34 is installed on the surface of the connecting tube 15 to seal the vacuum straw 14 and the connecting tube 15 to prevent air leakage. The airbag 34 moves to the inner wall of the sealing groove 32 and comes into close contact with the inner wall of the sealing groove 32.

[0031] In practice, the user installs the sealing ring 33 on the surface of the vacuum suction tube 14 by tightening the nail 31 on the surface of the sealing ring 33. When the vacuum suction tube 14 is connected to the surface of the connecting tube 15, the sealing ring 33 on the surface of the vacuum suction tube 14 moves to the surface of the connecting tube 15, the connecting tube 15 below the airbag 34 protrudes outward, and the airbag 34 moves to the inner wall of the sealing groove 32. With continuous inflation, the sealing performance between the vacuum suction tube 14 and the connecting tube 15 becomes stronger with the cooperation of the airbag 34 and the sealing groove 32. Under the joint action of the sealing ring 33 and the airbag 34, the connection between the vacuum suction tube 14 and the connecting tube 15 can be sealed, avoiding the phenomenon that the vacuum suction cup assembly 1 reduces the adsorption force of the plastic film and cardboard box due to air leakage at the connection between the vacuum suction tube 14 and the connecting tube 15, so as to achieve the high sealing performance of the vacuum suction cup.

[0032] Working principle: In use, first place the vacuum suction cup assembly 1 at the designated position on the robotic arm 101, then pull the plate 16, causing the plate 16 to slide along the inner wall of the guide rail 112, so that the plate 16 moves to the underside of the mounting plate 17. The user tightens the screw 19, which installs the plate 16 onto the surface of the vacuum chamber 13. Subsequently, the user tightens the mounting stud 18, which secures the mounting plate 17 and the plate 16, thus installing the vacuum suction cup assembly 1 on the robotic arm 101. The user then connects the vacuum suction tube 14 to the surface of the connecting tube 15. The vacuum generator connected to the vacuum suction tube 14 extracts the air from the suction cup body 11 through the vacuum suction tube 14 and the connecting tube 15, creating a negative pressure environment. After the stepped sponge 12 at the bottom of the suction cup body 11 comes into contact with the object surface, the air pressure inside the suction cup body 11 is lower than the external atmospheric pressure. The atmospheric pressure presses the object tightly against the bottom of the stepped sponge 12. The elastic deformation of the stepped sponge 12 adheres to the object surface to form a seal, thereby realizing the gripping function.

[0033] Subsequently, the user installs the sealing ring 33 onto the surface of the vacuum straw 14 by tightening the nail 31 on its surface. When the vacuum straw 14 is connected to the surface of the connecting tube 15, the sealing ring 33 on the surface of the vacuum straw 14 moves to the surface of the connecting tube 15, the connecting tube 15 below the airbag 34 protrudes outward, and the airbag 34 moves to the inner wall of the sealing groove 32. With continuous inflation, the sealing between the vacuum straw 14 and the connecting tube 15 becomes stronger through the cooperation of the airbag 34 and the sealing groove 32. The sealing ring 33 and the airbag 34 work together to seal the connection between the vacuum suction tube 14 and the connecting tube 15, preventing air leakage at the connection between the vacuum suction tube 14 and the connecting tube 15 from reducing the adsorption force of the vacuum suction cup assembly 1 on the plastic film and cardboard box. This achieves the high sealing performance of the vacuum suction cup, ensuring the airtightness of the connection between the vacuum suction tube 14 and the connecting tube 15 during use, and making the vacuum suction cup more effective at adsorbing plastic film and cardboard boxes.

[0034] Subsequently, when the vacuum suction cup assembly 1 is used for a long time, the surface of the stepped sponge 12 at the bottom of the suction cup body 11 will wear down, requiring timely replacement of the stepped sponge 12. The user pulls the stepped sponge 12 downwards, causing it to move the positioning element 22 away from the interior of the positioning groove 23. At this time, as the user pulls the stepped sponge 12 away from the bottom of the suction cup body 11, the stepped sponge 12 moves the adhesive layer 21 away from the surface of the high-adhesion adhesive 25 on the inner wall of the groove 24, allowing the adhesive layer 21 to be peeled off from the surface of the high-adhesion adhesive 25. The stepped sponge 12 can then be removed from the surface of the suction cup body 11 and replaced. The replaced stepped sponge 12 is placed at the bottom of the suction cup body 11. The positioning component 22 is driven to engage with the inside of the positioning groove 23. Under the engaging action of the positioning component 22 and the positioning groove 23, the installation position of the stepped sponge 12 can be quickly positioned. The stepped sponge 12 drives the adhesive layer 21 to move to the surface of the high-adhesion adhesive 25 on the inner wall of the groove 24. Under the adhesive action of the high-adhesion adhesive 25 and the adhesive layer 21, the stepped sponge 12 is adhered to the bottom of the suction cup body 11, so as to realize the function of easy replacement of the stepped sponge 12 in the vacuum suction cup. This ensures the performance of the vacuum suction cup assembly 1 during use and extends the service life of the vacuum suction cup assembly 1. Compared with the downtime maintenance caused by the problem of the vacuum suction cup assembly 1, the cost of replacing the stepped sponge 12 is lower, and the use of the vacuum suction cup is finally completed.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A vacuum suction cup for sorting mixed plastic film and cardboard boxes, comprising a vacuum suction cup assembly (1), characterized in that: The vacuum suction cup assembly (1) includes a suction cup body (11), a stepped sponge (12), and a vacuum chamber (13). The stepped sponge (12) is disposed below the suction cup body (11). The vacuum chamber (13) is installed on the surface of the top center position of the suction cup body (11). The vacuum chamber (13) is connected to the interior of the suction cup body (11). A connecting tube (15) is installed on the surface of the top position of the vacuum chamber (13). A vacuum suction tube (14) is disposed on the surface of the connecting tube (15). A convenient replacement mechanism (2) is disposed on the surface of the suction cup body (11) and the stepped sponge (12). A high sealing mechanism (3) is disposed on the surface of the vacuum suction tube (14) and the connecting tube (15).

2. The vacuum suction cup for sorting mixed plastic film and cardboard boxes according to claim 1, characterized in that: The surfaces of the vacuum suction tube (14) and the connecting tube (15) are threaded together. The interiors of the vacuum chamber (13), the vacuum suction tube (14) and the connecting tube (15) are connected. Two sets of robotic arms (101) are provided above the vacuum chamber (13). Two sets of mounting plates (17) are symmetrically mounted on the surface of the robotic arms (101). Two sets of plates (16) are provided on the surface at the top of the vacuum chamber (13). The plates (16) are connected to the vacuum chamber (13) by screws (19). The plates (16) are connected to the mounting plates (17) by mounting studs (18).

3. The vacuum suction cup for sorting mixed plastic film and cardboard boxes according to claim 2, characterized in that: The surface of the mounting stud (18) is fitted with a spring (110). The bottom end of the spring (110) is fixed to the surface of the plate (16). The top end of the spring (110) is in contact with the surface at the bottom of the mounting plate (17). Two sets of sliders (111) are symmetrically mounted on the surface at the bottom of the plate (16). The surface of the vacuum chamber (13) is provided with a guide rail (112) for sliding cooperation with the sliders (111).

4. The vacuum suction cup for sorting mixed plastic film and cardboard boxes according to claim 1, characterized in that: The easy replacement mechanism (2) includes a positioning groove (23) on the surface of the suction cup body (11), a positioning element (22) on the surface of the stepped sponge (12), a groove (24) on the surface of the suction cup body (11), a high-adhesion adhesive (25) on the inner wall of the groove (24), and an adhesive layer (21) on the surface of the stepped sponge (12).

5. The vacuum suction cup for sorting mixed plastic film and cardboard boxes according to claim 1, characterized in that: Four sets of positioning elements (22) are symmetrically installed on the surface of the stepped sponge (12). The surface of the suction cup body (11) at the bottom position is provided with a positioning groove (23) for engaging with the positioning elements (22). The surface of the suction cup body (11) at the bottom position is provided with a groove (24). The inner wall of the groove (24) is provided with high-viscosity adhesive (25). The surface of the stepped sponge (12) at the top position is provided with an adhesive layer (21). The top of the adhesive layer (21) extends into the interior of the groove (24) and adheres to the surface of the high-viscosity adhesive (25).

6. The vacuum suction cup for sorting mixed plastic film and cardboard boxes according to claim 1, characterized in that: The high sealing mechanism (3) includes a sealing ring (33) disposed on the surface of the vacuum suction tube (14), a nail (31) disposed on the surface of the sealing ring (33) for connecting the sealing ring (33) and the vacuum suction tube (14), a sealing groove (32) disposed on the inner wall of the sealing ring (33), and an airbag (34) disposed on the surface of the connecting tube (15).

7. The vacuum suction cup for sorting mixed plastic film and cardboard boxes according to claim 1, characterized in that: A sealing ring (33) is provided on the surface of the bottom position of the vacuum suction tube (14). The sealing ring (33) is connected to the vacuum suction tube (14) by a nail body (31). A sealing groove (32) is provided on the inner wall of the sealing ring (33). An air bag (34) is installed on the surface of the connecting tube (15) to seal the vacuum suction tube (14) and the connecting tube (15) to prevent air leakage. The air bag (34) moves to the inner wall of the sealing groove (32) and comes into close contact with the inner wall of the sealing groove (32).

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