Automatic release film adding device for express bag
By designing an automatic release film addition device for express delivery bags that includes a pressing cylinder and an elastic support structure, the problem of release film being inconvenient to cut, press, and add has been solved, enabling continuous operation and efficient assembly line conveying, thus improving operational efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU SHENGHUOLING NEW MATERIALS CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-04-17
AI Technical Summary
The existing automatic release film adding device for express bags is not convenient for cutting, pressing and adding release film, which affects continuous cutting and conveying operations. In addition, the release film is prone to being too tight or too loose during conveying, resulting in it being scattered or torn due to tension, which reduces the efficiency of operation.
A device was designed that includes components such as a base, release film holder, express bag holder, winding rack, positioning block, stamping arm, pressing arm, pressing cylinder, and ring knife. The pressing cylinder drives the pressing block and ring knife to cut the release film. The elastic support structure prevents the release film from being too tight or too loose, thus achieving convenient cutting and continuous conveying.
It enables convenient cutting, pressing, and adding of release film, avoiding excessive tightness or looseness during the conveying process, improving the efficiency of assembly line operations, preventing the release film from scattering or being torn due to tension, and enhancing operational efficiency.
Smart Images

Figure CN224132400U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of automatic release film adding device, specifically an automatic release film adding device for express delivery bags. Background Technology
[0002] Release film, also called peel-off film or anti-stick film, is usually used as a protective layer for self-adhesive materials. It makes them easy to peel off without leaving any residue. Release film may be used as the backing paper for the tape at the sealing point of express bags to ensure that the tape is easy to tear and use. The adhesive side of the express bag usually has adhesive on at least one side to be used as the adhesive side for sticking the tape to the surface of the object, and the other unadhesive side of the tape is exposed. A layer of release film is covered on the adhesive side of the tape to protect the adhesive side.
[0003] The addition of release film to express delivery bags is mostly accomplished through automated mechanical equipment. The express delivery bag is released by an unwinding machine, and the release film is released by an unwinding machine. Then, they are attached together by professional bonding equipment. However, existing automatic release film addition devices of this type are generally not conducive to convenient cutting, pressing, and adding of release film. They are not suitable for continuous cutting and conveying of release film, nor for assembly line operations. The release film is prone to being too tight or too loose during conveying, and it is easy for the release film to scatter or tear during conveying, which affects the efficiency of the automatic release film addition device for express delivery bags. Utility Model Content
[0004] The purpose of this utility model is to provide an automatic release film adding device for express bags, so as to solve the problems mentioned in the background art, such as the inconvenience of cutting, pressing and adding release film, the inconvenience of continuous operation of cutting and conveying release film, the inconvenience of assembly line operation, the tendency of release film to be too tight or too loose during conveying, and the tendency of release film to be scattered or torn during conveying, which affect the efficiency of the automatic release film adding device for express bags.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic release film adding device for express delivery bags, comprising a base and a release film frame, wherein a release film frame is installed at the top of the base, a release film release cylinder is installed at the top of the release film frame, an express delivery bag holder is installed at the top of one side of the base, an express delivery bag release cylinder is installed at the top of the express delivery bag holder, a winding frame is installed at the top of one side of the base, a winding cylinder is installed at the top of the winding frame, and the express delivery bag holder is located away from the express delivery bag holder. A positioning block is installed at one end of the bag release tube. A stamping arm is installed at the top of the positioning block. A pressing arm is installed at the top of the positioning block on one side of the stamping arm. A support block is installed at the bottom of the positioning block. A hollow pad is installed on the side wall of the positioning block on one side of the support block. A pressing cylinder is installed at the bottom of the pressing arm. A pressing block is installed at the bottom of the pressing cylinder. A ring-shaped knife is installed at the bottom of the pressing block. A stamping cylinder is installed on the side wall of the stamping arm. A stamping block is installed at the bottom of the stamping cylinder.
[0006] Preferably, a first roller is installed on the outer wall of the release film frame below the release film release cylinder, and a support shaft is installed on the outer wall of the release film frame on one side of the first roller.
[0007] Preferably, a rocker arm is fitted onto the surface of the support shaft, and a second roller is mounted on the top of the rocker arm.
[0008] Preferably, a third roller is installed on the outer wall of the release film frame below the rocker arm, and a fourth roller is installed on the outer wall of the release film frame below the first roller.
[0009] Preferably, the bottom end of the rocker arm is provided with a spring, and the spring is connected to the release film frame.
[0010] Preferably, a glue sprayer is installed on the outer wall of the express bag holder on one side of the positioning block, and the surface of the express bag release cylinder is provided with the express bag body.
[0011] Preferably, the express bag body extends beyond the positioning block via the support block, and the express bag body extends between the support block and the hollow pad block.
[0012] Preferably, the surface of the release cylinder is provided with a release membrane body, and the release membrane body extends to the surface of the second roller, the third roller, and the fourth roller, and the release membrane body extends between the annular blade and the hollow pad.
[0013] Compared with the prior art, the beneficial effects of this utility model are: the automatic release film adding device not only realizes the convenient cutting, pressing and adding of release film for express bags, which facilitates continuous operation of cutting and conveying release film, and facilitates assembly line operation, but also avoids the release film being conveyed too tightly or too loosely, prevents the release film from being scattered or torn due to tension, and improves the efficiency of the automatic release film adding device for express bags.
[0014] (1) The express bag release cylinder releases the express bag body, which is led out between the support block and the hollow pad block. The external winding machine winds up the express bag body, and the glue spraying machine sprays glue onto the conveyed express bag body. The release film release cylinder releases the release film body, which is led out between the ring knife and the hollow pad block. The pressing cylinder drives the pressing block and the ring knife to move downwards. The ring knife facilitates the selective cutting of the release film body, and the cutting size is the projected size of the ring knife. The hollow pad provides support during cutting, and the stamping cylinder drives the stamping block to move. The stamping block presses the cut release film body into the interior of the hollow pad, passes through the hollow pad, and connects with the express bag body. The support block provides support to facilitate the automatic addition of release film to the express bag. This automatic release film addition device for express bags enables convenient cutting, pressing, and addition of release film, facilitates continuous cutting and conveying of release film, facilitates assembly line operations, and improves the efficiency of the automatic release film addition device for express bags.
[0015] (2) When the release film body is conveyed, the first roller, the second roller, the third roller and the fourth roller provide auxiliary support. The spring elastic drive rocker arm rotates around the support shaft. The support shaft drives the second roller to rotate. With the cooperation of the first roller, the second roller elastically tightens the release film body to prevent the release film body from being too tight or too loose during conveying, which would affect the quality of the release film addition. This realizes the elastic tension support of the release film in the automatic release film addition device for express bags, avoiding the release film being too tight or too loose during conveying, and preventing the release film from being scattered or torn. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0017] Figure 2 This is a three-dimensional structural diagram of the winding drum of this utility model;
[0018] Figure 3 This is a front view structural diagram of the present utility model;
[0019] Figure 4 This is a three-dimensional structural diagram of the positioning block of this utility model;
[0020] Figure 5This is a three-dimensional structural diagram of the stamping cylinder of this utility model;
[0021] Figure 6 This is a top view of the structure of this utility model;
[0022] Figure 7 This is a front view structural diagram of the glue spraying machine of this utility model;
[0023] Figure 8 This is a three-dimensional structural diagram of the ring-shaped knife of this utility model;
[0024] Figure 9 This is a three-dimensional structural diagram of the hollow pad block of this utility model.
[0025] In the diagram: 1. Base; 2. Courier bag holder; 3. Courier bag release tube; 4. Release film holder; 5. Release film release tube; 6. Rewinding frame; 7. Rewinding drum; 8. Positioning block; 9. Stamping arm; 10. Pressing arm; 11. Stamping cylinder; 12. Stamping block; 13. Pressing cylinder; 14. Pressing block; 15. Ring knife; 16. Hollow pad; 17. Support block; 18. Release film body; 19. Courier bag body; 20. First roller; 21. Spring; 22. Support shaft; 23. Rocker arm; 24. Second roller; 25. Third roller; 26. Fourth roller; 27. Glue sprayer. Detailed Implementation
[0026] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.
[0027] Please see Figure 1-9 This utility model provides an embodiment of an automatic release film adding device for express delivery bags, comprising a base 1 and a release film frame 4. The release film frame 4 is mounted on the top of the base 1, and a release film release cylinder 5 is mounted on the top of the release film frame 4. An express delivery bag frame 2 is mounted on the top of the base 1 on one side of the release film frame 4, and an express delivery bag release cylinder 3 is mounted on the top of the express delivery bag frame 2. A winding frame 6 is mounted on the top of the base 1 on one side of the express delivery bag frame 2, and a winding cylinder 7 is mounted on the top of the winding frame 6. The end of the express delivery bag frame 2 furthest from the express delivery bag release cylinder 3 is equipped with... There is a positioning block 8, a stamping arm 9 is installed at the top of the positioning block 8, a pressing arm 10 is installed at the top of the positioning block 8 on one side of the stamping arm 9, a support block 17 is installed at the bottom of the positioning block 8, a hollow pad block 16 is installed on the side wall of the positioning block 8 on one side of the support block 17, a pressing cylinder 13 is installed at the bottom of the pressing arm 10, a pressing block 14 is installed at the bottom of the pressing cylinder 13, a ring-shaped knife 15 is installed at the bottom of the pressing block 14, a stamping cylinder 11 is installed on the side wall of the stamping arm 9, and a stamping block 12 is installed at the bottom of the stamping cylinder 11.
[0028] A first roller 20 is installed on the outer wall of the release film frame 4 below the release film release cylinder 5, and a support shaft 22 is installed on the outer wall of the release film frame 4 on one side of the first roller 20.
[0029] The express bag holder 2 supports the express bag release cylinder 3, which releases the express bag body 19. The express bag body 19 is led out between the support block 17 and the hollow pad block 16 and is wound up by an external winding machine. The glue spraying machine 27 sprays glue onto the conveyed express bag body 19. The continuity of glue spraying is controlled by an external computer control device. The release film holder 4 supports the release film release cylinder 5, which releases the release film body 18. The release film body 18 is led out between the ring knife 15 and the hollow pad block 16 and is wound up by the winding drum 7. The winding frame 6 supports the winding drum 7. When the release film body 18 needs to be connected to the express bag body 19, the positioning block 8 supports the punching arm 9 and the pressing arm 1. 0 provides support, and the pressing cylinder 13 drives the pressing block 14 and the ring knife 15 to move downwards. The ring knife 15 facilitates the selection of areas for cutting the release film body 18. The cutting size is the projected size of the ring knife 15. The hollow pad 16 provides support during cutting. The stamping cylinder 11 is opened, and the stamping cylinder 11 drives the stamping block 12 to move. The stamping block 12 presses the cut release film body 18 into the interior of the hollow pad 16, passes through the hollow pad 16, and connects with the express bag body 19. The support block 17 provides support to facilitate the automatic addition of release film to the express bag. This realizes the convenient cutting, pressing, and adding of release film by the automatic release film adding device for express bags, which facilitates continuous operation of cutting and conveying release film, facilitates assembly line operation, and improves the efficiency of the automatic release film adding device for express bags.
[0030] A rocker arm 23 is fitted onto the surface of the support shaft 22. A second roller 24 is installed at the top of the rocker arm 23. A third roller 25 is installed on the outer wall of the release film frame 4 below the rocker arm 23. A fourth roller 26 is installed on the outer wall of the release film frame 4 below the first roller 20. A spring 21 is provided at the bottom of the rocker arm 23 and is connected to the release film frame 4.
[0031] A glue sprayer 27 is installed on the outer wall of the express bag holder 2 on one side of the positioning block 8. An express bag body 19 is provided on the surface of the express bag release cylinder 3. The express bag body 19 extends to the outside of the positioning block 8 through the support block 17. The express bag body 19 extends between the support block 17 and the hollow pad block 16. A release film body 18 is provided on the surface of the release film release cylinder 5. The release film body 18 extends to the surface of the second roller 24, the third roller 25, and the fourth roller 26. The release film body 18 extends between the annular knife 15 and the hollow pad block 16.
[0032] When the release film body 18 is conveyed, the first roller 20, the second roller 24, the third roller 25, and the fourth roller 26 provide auxiliary support. The spring 21 elastically drives the rocker arm 23 to rotate around the support shaft 22. The support shaft 22 drives the second roller 24 to rotate. With the cooperation of the first roller 20, the second roller 24 elastically tightens the release film body 18 to prevent the release film body 18 from being too tight or too loose during conveying, which would affect the quality of the release film addition. This realizes the elastic tension support of the release film in the automatic release film addition device for express bags, avoiding the release film being too tight or too loose during conveying, and preventing the release film from being scattered or torn due to tension.
[0033] In this embodiment, during use: An external power supply is connected, and the courier bag release cylinder 3 releases the courier bag body 19. The courier bag body 19 is led out between the support block 17 and the hollow pad block 16, and is wound up by an external winding machine. The glue spraying machine 27 sprays glue onto the conveyed courier bag body 19. The release film frame 4 supports the release film release cylinder 5, which releases the release film body 18. The release film body 18 is led out between the annular knife 15 and the hollow pad block 16, and is wound up by the winding drum 7. The winding frame 6 supports the winding drum 7. When the release film body 18 needs to be connected to the courier bag body 19, the positioning block 8 supports the punching arm 9 and the pressing arm 10. The pressing cylinder 13 drives the pressing block 14 and the annular knife 15 to move downwards. The annular knife 15 facilitates selective cutting of the release film body 18. The cutting process involves cutting to a size equal to the projected size of the ring-shaped blade 15. A hollow pad 16 provides support during cutting. A stamping cylinder 11 drives a stamping block 12 to move, pressing the cut release film body 18 into the hollow pad 16. The release film body 18 passes through the hollow pad 16 and connects to the express bag body 19. A support block 17 provides support to facilitate automatic addition of release film to the express bag. When the release film body 18 is conveyed, the first roller 20, the second roller 24, the third roller 25, and the fourth roller 26 provide auxiliary support. A spring 21 elastically drives a rocker arm 23 to rotate around a support shaft 22. The support shaft 22 drives the second roller 24 to rotate. With the cooperation of the first roller 20, the second roller 24 elastically tightens the release film body 18 to prevent it from being too tight or too loose during conveying, thus affecting the quality of release film addition and completing the operation of the automatic release film addition device.
[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. An automatic adding device of a delivery bag release film, characterized by: The system includes a base (1) and a release film holder (4). The release film holder (4) is mounted on the top of the base (1), and a release film release cylinder (5) is mounted on the top of the release film holder (4). A courier bag holder (2) is mounted on the top of the base (1) on one side of the release film holder (4), and a courier bag release cylinder (3) is mounted on the top of the courier bag holder (2). A winding frame (6) is mounted on the top of the base (1) on one side of the courier bag holder (2), and a winding drum (7) is mounted on the top of the winding frame (6). A positioning block (8) is mounted on the end of the courier bag holder (2) away from the courier bag release cylinder (3), and the top of the positioning block (8) is... A stamping arm (9) is provided. A pressing arm (10) is installed on the top of a positioning block (8) on one side of the stamping arm (9). A support block (17) is installed at the bottom of the positioning block (8). A hollow pad block (16) is installed on the side wall of the positioning block (8) on one side of the support block (17). A pressing cylinder (13) is installed at the bottom of the pressing arm (10). A pressing block (14) is installed at the bottom of the pressing cylinder (13). A ring-shaped knife (15) is installed at the bottom of the pressing block (14). A stamping cylinder (11) is installed on the side wall of the stamping arm (9). A stamping block (12) is installed at the bottom of the stamping cylinder (11).
2. The automatic adding device of express bag release film according to claim 1, characterized in that: A first roller (20) is installed on the outer wall of the release film frame (4) below the release film release cylinder (5), and a support shaft (22) is installed on the outer wall of the release film frame (4) on one side of the first roller (20).
3. The automatic adding device of express bag release film according to claim 2, characterized in that: A rocker arm (23) is fitted onto the surface of the support shaft (22), and a second roller (24) is mounted on the top of the rocker arm (23).
4. The automatic adding device of express bag release film according to claim 3, characterized in that: A third roller (25) is installed on the outer wall of the release film frame (4) below the rocker arm (23), and a fourth roller (26) is installed on the outer wall of the release film frame (4) below the first roller (20).
5. The automatic adding device of express bag release film according to claim 4, characterized in that: The bottom end of the rocker arm (23) is provided with a spring (21), and the spring (21) is connected to the release film frame (4).
6. The automatic adding device of express bag release film according to claim 5, characterized in that: A glue sprayer (27) is installed on the outer wall of the express bag holder (2) on one side of the positioning block (8), and an express bag body (19) is provided on the surface of the express bag release cylinder (3).
7. The automatic adding device of express bag release film according to claim 6, characterized in that: The express bag body (19) extends beyond the support block (17) to the outside of the positioning block (8), and the express bag body (19) extends between the support block (17) and the hollow pad block (16).
8. The automatic adding device of express bag release film according to claim 7, characterized in that: The release cylinder (5) is provided with a release membrane body (18) on its surface, and the release membrane body (18) extends to the surface of the second roller (24), the third roller (25), and the fourth roller (26), and the release membrane body (18) extends between the annular blade (15) and the hollow pad (16).