Adhesive tape springback prevention mechanism and carton sealing machine

Abstract

The utility model discloses an adhesive tape anti-springback mechanism and a carton sealer, the adhesive tape anti-springback mechanism comprises an anti-springback unit, the anti-springback unit is located on the peripheral side of a carton body, the distance between the anti-springback unit and the carton body is adjustable, and the anti-springback unit is close to the carton body to limit an adhesive tape cut off by a cutter so as to prevent the adhesive tape cut off by the cutter from springback; the anti-rebound unit is arranged to limit the adhesive tape cut off by the cutter, so that the situation that the adhesive tape is not tightly adhered or cannot be effectively adhered to influence the subsequent smooth sealing of the box body by the adhesive tape due to the fact that the longer reserved adhesive tape is separated from the adhesive tape roll and then rebounds to generate adhesion due to the loss of limitation is avoided, and the sealing quality of the box body is improved; the distance between the anti-springback unit and the box body is adjusted to be close to the box body to limit the adhesive tape or away from the box body to avoid influence on adhesion of the adhesive tape and the box body, and the use flexibility of the anti-springback mechanism is improved.

Description

Technical Field

[0001] This utility model relates to the field of carton sealing machine technology, specifically to a tape anti-rebound mechanism and a carton sealing machine. Background Technology

[0002] Because commercial air conditioner outdoor units are relatively large, the tape application process on the sides of the packaging box requires the use of longer tape.

[0003] Existing carton sealing machines suffer from problems due to uncontrollable factors such as the excessive length and elasticity of the tape. After the tape is cut, the original core cutting mechanism experiences a rebound phenomenon, which can lead to issues like insufficient roller pressing. This results in tape sticking, poor adhesion, and the tape not being able to be evenly applied to the side of the carton. Consequently, the sealed carton does not meet the tape adhesion requirements, potentially causing quality problems and insufficient compatibility.

[0004] Therefore, the existing technology needs further improvement. Utility Model Content

[0005] To address the shortcomings of existing technologies, a tape anti-rebound mechanism and a carton sealing machine are proposed. This solves the problem in existing technologies where the tape rebounds after being cut by the cutting mechanism, causing the tape to stick together and not adhere firmly, thus preventing the tape from being smoothly pasted onto the side of the packaging box.

[0006] To achieve the above objectives, the present invention proposes the following technologies:

[0007] A tape anti-rebound mechanism includes an anti-rebound unit located on the periphery of a housing, and the distance between the anti-rebound unit and the housing is adjustable. The anti-rebound unit is close to the housing to limit the tape cut by the cutter, thereby preventing the tape from rebounding.

[0008] Furthermore, the anti-rebound unit includes a first anti-rebound unit located between the front roller and the cutter. The first anti-rebound unit is close to the housing and limits the tape cut by the cutter so that the front roller can press the tape tightly and stick it to the housing.

[0009] Furthermore, the first anti-rebound unit is specifically a negative pressure component. The negative pressure component is located above the box and reciprocates in the vertical direction. The negative pressure component is close to the box and generates negative pressure to absorb the tape cut by the cutter, thereby facilitating the tape to adhere to the box.

[0010] Furthermore, the negative pressure component includes a suction cup, the long side of which is parallel to the direction of movement of the box, the width of which is not less than the width of the tape, and the surface of the suction cup near the tape is provided with adsorption holes arranged in a rectangular array to uniformly adsorb the tape and prevent rebound.

[0011] Furthermore, the front roller abuts against the upper surface of the box, the box moves along the conveying direction and drives the tape cut by the cutter to slide on the lower surface of the suction cup, and the front roller presses the tape adsorbed on the suction cup tightly to the upper surface of the box to achieve sealing.

[0012] Furthermore, the negative pressure assembly also includes a first cylinder, which is fixedly installed above the housing. The suction cup is located at the output end of the first cylinder. The first cylinder extends and retracts to drive the suction cup to reciprocate in the vertical direction, thereby facilitating the adsorption of the tape and limiting the position of the tape.

[0013] Furthermore, the negative pressure assembly also includes a connecting plate located above the suction cup, a suction cup guide rod is provided between the suction cup and the connecting plate, the suction cup guide rod passes through the connecting plate and is slidably connected to the connecting plate, and the connecting plate is fixedly installed at the output end of the first cylinder.

[0014] Furthermore, the anti-rebound unit includes a second anti-rebound unit located on the side of the front roller away from the cutter. The second anti-rebound unit is close to the box and reciprocates in the vertical direction to press the tape pasted on the front and rear sides of the box.

[0015] Furthermore, the second anti-rebound unit is specifically a scraper assembly, which is located on the front side of the box in the conveying direction so as to press the tape pasted on the front and rear sides of the box before and after the box passes through the scraper assembly.

[0016] Furthermore, the scraper assembly includes a scraper body, with flattening portions provided on both sides of the scraper body. The scraper body reciprocates in a vertical direction to drive the flattening portions on both sides to press the tape pasted on the front or rear side of the box body respectively.

[0017] Furthermore, the scraper assembly also includes a second cylinder, which is fixedly installed above the housing. The output end of the second cylinder is fixedly connected to the scraper body, and the second cylinder extends and retracts to drive the scraper body to reciprocate in the vertical direction.

[0018] Furthermore, the width of the scraping part is not less than the width of the tape, the scraping part includes a front side scraping part and a rear side scraping part, the length of the front side scraping part is less than the length of the rear side scraping part, and the front side scraping part is located between the output end of the second cylinder and the front roller.

[0019] Furthermore, a rear roller is provided on the side of the cutter away from the first anti-rebound unit. The rear roller is rotatably connected to the top of the box. The box moves along the conveying direction to push the rear roller to flip and stick to the tape on the rear roller to achieve a fixed connection between the front side of the box and the tape.

[0020] A carton sealing machine, comprising a tape anti-rebound mechanism as described in any of the preceding claims.

[0021] Compared with the prior art, the comprehensive effects brought about by this utility model include:

[0022] This application uses an anti-rebound unit to limit the tape after it has been cut by the cutter, preventing longer pieces of tape from separating from the tape roll and rebounding, causing adhesion and resulting in loose or ineffective tape adhesion. This affects the subsequent sealing of the box, thereby improving the sealing quality. The distance between the anti-rebound unit and the box can be adjusted to either be close to the box to limit the tape or far away to avoid affecting the adhesion between the tape and the box, thus improving the flexibility of the anti-rebound mechanism. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the anti-rebound mechanism in an embodiment of this utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the anti-rebound mechanism in an embodiment of this utility model;

[0025] Figure 3 This is a schematic diagram of the first anti-rebound unit structure according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the explosion structure of the first anti-rebound unit in an embodiment of this utility model;

[0027] Figure 5 This is a schematic diagram of the second anti-rebound unit structure in an embodiment of this utility model;

[0028] Figure 6 This is a schematic diagram of the explosion structure of the second anti-rebound unit in an embodiment of this utility model;

[0029] Figure 7 This is a schematic diagram of the anti-rebound mechanism and the assembly structure of the housing in an embodiment of this utility model;

[0030] Figure 8 This is a schematic diagram of the structure of the suction cup when it is close to the tape in an embodiment of this utility model;

[0031] Figure 9 This is a schematic diagram of the structure of the tape cutter in the embodiment of the present invention.

[0032] Figure 10 for Figure 9 Schematic diagram of a local structure in the middle;

[0033] Figure 11 This is a schematic diagram of the scraper body leveling the rear end of the box in an embodiment of this utility model.

[0034] Legend: 1. Box body; 2. Cutter; 3. Adhesive tape; 4. Front roller; 5. Suction cup; 6. First cylinder; 7. Connecting plate; 8. Suction cup guide rod; 9. Scraper body; 10. Second cylinder; 11. Front side flattening part; 12. Rear side flattening part; 13. Rear roller; 14. Bracket. Detailed Implementation

[0035] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Terms such as "upper," "lower," "left," "right," and "top" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0037] like Figures 1 to 11 As shown, a tape anti-rebound mechanism includes an anti-rebound unit located on the periphery of a housing 1, and the distance between the anti-rebound unit and the housing 1 is adjustable. The anti-rebound unit is close to the housing 1 to limit the tape 3 cut by the cutter 2, thereby preventing the tape 3 cut by the cutter 2 from rebounding.

[0038] By setting an anti-rebound unit to limit the tape 3 after it has been cut by the cutter 2, the longer reserved tape 3 is prevented from losing its limit after separating from the tape roll and rebounding, causing it to stick together. This would result in the tape 3 not sticking tightly or not sticking effectively, affecting the subsequent sealing of the box 1 with the tape 3, thereby improving the sealing quality of the box 1. The distance between the anti-rebound unit and the box 1 can be adjusted to be close to the box 1 to limit the tape 3 or far away from the box 1 to avoid affecting the adhesion between the tape 3 and the box 1, thus improving the flexibility of the anti-rebound mechanism.

[0039] In the tape anti-rebound mechanism of this embodiment, the anti-rebound unit includes a first anti-rebound unit, which is located between the front roller 4 and the cutter 2. The first anti-rebound unit is close to the housing 1 and limits the tape 3 cut by the cutter 2 so that the front roller 4 can press the tape 3 tightly and stick it to the housing 1.

[0040] Specifically, the box 1 passes through the cutter 2 and the front roller 4 on the conveyor belt. The front roller 4 presses the tape 3 fixed to the front end of the box 1, so that it fits into the box 1 to seal the box. When the tape 3 has a sufficient reserved length, the first anti-rebound unit approaches the tape 3 and limits the tape 3. Then the cutter 2 cuts the tape 3. The tape 3 remains flat under the action of the first anti-rebound unit, so that it can be driven by the box 1 and pressed onto the box 1 by the front roller 4.

[0041] In the tape anti-rebound mechanism of this embodiment, the first anti-rebound unit is specifically a negative pressure component. The negative pressure component is located above the box 1 and moves back and forth in the vertical direction. The negative pressure component is close to the box 1 and generates negative pressure to adsorb the tape 3 cut by the cutter 2, thereby facilitating the tape 3 to adhere to the box 1.

[0042] The tape 3 is a thin strip with a small thickness and weight, which matches the characteristics of the tape 3 itself. The first anti-rebound unit is a negative pressure component. The negative pressure component is located above the box 1. When it is close to the tape 3, it generates negative pressure to attract the tape 3 with a small weight, thereby limiting the tape 3, ensuring the flatness of the tape 3, and preventing the tape 3 from sticking after the cutter 2 cuts the tape 3, thus achieving the anti-rebound effect. At the same time, it makes it easier for the tape 3 to move forward with the box 1 and be pressed against the surface of the box 1 by the front roller 4.

[0043] The anti-rebound mechanism in this embodiment is mainly used in carton sealing machines. With the above settings, compared with the traditional mode, without affecting efficiency, the addition of this mechanism effectively prevents the tape from rebounding, thereby improving the compatibility and sealing quality of traditional carton sealing machines.

[0044] In the tape anti-rebound mechanism of this embodiment, the negative pressure component includes a suction cup 5. The long side of the suction cup 5 is arranged parallel to the movement direction of the box 1. The width of the suction cup 5 is not less than the width of the tape 3. The surface of the suction cup 5 near the tape 3 is provided with adsorption holes arranged in a rectangular array to uniformly adsorb the tape 3 and achieve anti-rebound.

[0045] Specifically, the suction cup 5 is set horizontally and moves back and forth in the vertical direction. When it gets close to the tape 3, the internal air is drawn to generate negative pressure and adsorbs the surface of the tape 3 through the adsorption hole to limit the tape 3. The suction cup 5 is rectangular and located directly above the tape 3, with its long side parallel to the direction of movement of the box, to ensure the adsorption and limiting effect of the tape 3.

[0046] In the tape anti-rebound mechanism of this embodiment, the front roller 4 abuts against the upper surface of the box 1. The box 1 moves along the conveying direction and drives the tape 3 cut by the cutter 2 to slide on the lower surface of the suction cup 5. The front roller 4 presses the tape 3 adsorbed on the suction cup 5 tightly against the upper surface of the box 1 to achieve sealing.

[0047] Specifically, the suction force of the suction cup 5 on the tape 3 ensures that the tape 3 can be flatly attached to the bottom of the suction cup 5, while allowing the tape 3 to move with the box body 1 and move under the suction cup 5 to achieve feeding; after the tape 3 is completely detached from the suction cup 5, the suction cup 5 stops generating negative pressure and rises to reset, ready for the next operation.

[0048] In the tape anti-rebound mechanism of this embodiment, the negative pressure component further includes a first cylinder 6, which is fixedly installed above the housing 1. The suction cup 5 is located at the output end of the first cylinder 6. The first cylinder 6 extends and retracts to drive the suction cup 5 to reciprocate in the vertical direction, thereby facilitating the adsorption of the tape 3 and limiting the position of the tape 3.

[0049] The first cylinder 6 drives the suction cup 5 to move closer to or further away from the tape 3. Preferably, the first cylinder 6 is positioned close to the cutter 2 to reduce the distance from the cut end of the tape 2, thereby smoothly adsorbing the tape 3 and improving the limiting and anti-rebound effect.

[0050] Specifically, the first cylinder 6 is vertically arranged and fixedly mounted on the bracket 14. The cutter 2 and the front roller 4 are also mounted on the bracket 14. The bracket 14 is located above the conveyor belt of the box body 1. The bracket 14 provides support for the above structures and ensures that each structure works stably. The box body 1 passes under the bracket 14 in sequence along the conveying direction for the sealing operation.

[0051] In the tape anti-rebound mechanism of this embodiment, the negative pressure component also includes a connecting plate 7 located above the suction cup 5. A suction cup guide rod 8 is provided between the suction cup 5 and the connecting plate 7. The suction cup guide rod 8 passes through the connecting plate 7 and is slidably connected to the connecting plate 7. The connecting plate 7 is fixedly installed at the output end of the first cylinder 6.

[0052] Specifically, the connecting plate 7 is L-shaped, and its vertical side is fixedly connected to the output end of the first cylinder 6. There are two suction cup guide rods 8, the bottom ends of which are respectively connected to the inner cavity of the suction cup 5 and fixedly connected to the suction cup 5. The two suction cup guide rods 8 are slidably connected to the horizontal side of the connecting plate 7. The suction cup guide rods 8 are surrounded by springs to provide a certain buffering effect and ensure that the suction cup 5 is in contact with the tape 3, preventing the box 1 from being crushed when the suction cup 5 descends. The top of the suction cup guide rods 8 is connected to an external suction hose, and the suction cup 5 is subjected to negative pressure by an external suction device to generate suction force.

[0053] In the tape anti-rebound mechanism of this embodiment, the anti-rebound unit includes a second anti-rebound unit. The second anti-rebound unit is located on the side of the front roller 4 away from the cutter 2. The second anti-rebound unit is close to the box 1 and reciprocates in the vertical direction to press the tape 3 pasted on the front and rear sides of the box 1.

[0054] A second anti-rebound unit is installed, which moves up and down to repress the tape 3 on the side of the box 1, preventing the tape 3 from not being pressed tightly due to insufficient length of the front roller 4, and preventing wrinkles and air bubbles from forming.

[0055] Specifically, when the front end of the box 1 moves to below the second anti-rebound unit, the conveyor line pauses, and the second anti-rebound unit descends and approaches the box 1 to smooth and press the starting part of the tape 3 on the front side of the box 1 to ensure a stable fit between the tape 3 and the box 1. When the box 1 is sealed and its rear end moves to below the second anti-rebound unit, the second anti-rebound unit descends again to smooth the ending part of the tape 3 on the rear side of the box 1 to improve the tightness of the fit between the tape 3 and the box 1.

[0056] In the tape anti-rebound mechanism of this embodiment, the second anti-rebound unit is specifically a scraper assembly. The scraper assembly is located on the front side of the box 1 in the conveying direction so as to press the tape 3 pasted on the front and rear sides of the box 1 before and after the box 1 passes the scraper assembly.

[0057] The scraper assembly is positioned at the front of the conveying direction, and the second anti-rebound unit is located at the front end of the bracket 14, ensuring that the front and rear ends of the box 1, which are bonded by the tape 3, can be scraped flat by the scraper assembly.

[0058] It is configured as a scraper assembly that matches the bonding surfaces of the tape 3 and the box 1. The tape 3 is pressed by the scraper assembly moving along the side of the box 1.

[0059] In the tape anti-rebound mechanism of this embodiment, the scraper assembly includes a scraper body 9, and scraping parts are respectively provided on both sides of the scraper body 9. The scraper body 9 reciprocates in the vertical direction to drive the scraping parts on both sides to press the tape 3 pasted on the front or rear side of the box 1 respectively.

[0060] The scraper body 9 includes front and rear flattening parts. The flattening part on the side closer to the bracket 14 flattens and tightens the front end of the box 1 after the box 1 and the tape 3 are fixed. The flattening part on the side farther from the bracket 14 flattens and tightens the end of the box 1 and the tape 3 after the box 1 is sealed.

[0061] In the tape anti-rebound mechanism of this embodiment, the scraper assembly further includes a second cylinder 10. The second cylinder 10 is fixedly installed above the housing 1. The output end of the second cylinder 10 is fixedly connected to the scraper body 9. The second cylinder 10 extends and retracts to drive the scraper body 9 to reciprocate in the vertical direction.

[0062] Specifically, the second cylinder 10 is fixedly connected to the bracket 14. The output end of the second cylinder 10 is located on the upper side of the scraper body 9. A fastening plate is provided on the lower side of the scraper body 9. The fastening plate is fixedly installed to the scraper body 9 and the output end of the second cylinder 10 by bolts.

[0063] In the tape anti-rebound mechanism of this embodiment, the width of the flattening part is not less than the width of the tape 3. The flattening part includes a front side flattening part 11 and a rear side flattening part 12. The length of the front side flattening part 11 is less than the length of the rear side flattening part 12. The front side flattening part 11 is located between the output end of the second cylinder 10 and the front roller 4.

[0064] Through the above settings, it is ensured that the scraping part effectively scrapes and presses the adhesive tape 3 onto the edge of the box 1. During the sealing process, the power of the adhesive tape 3 mainly comes from the continuous movement of the box 1 after the adhesive tape 3 is pasted onto the front side of the box 1, which pulls the adhesive tape 3 out by the front end. Therefore, the adhesive tape 3 pasted on the front side is subjected to greater tension and is prone to wrinkles. Therefore, the length of the front side scraping part 11 is set to be small, and the shorter side of the scraper body 9 applies greater pressure to the adhesive part of the adhesive tape 3 onto the box 1, thereby effectively eliminating wrinkles of the adhesive tape 3 on the front side of the box 1 and making the adhesion more secure. After the adhesive tape 3 is cut, it is pressed onto the box 1 by the front roller 4 and is relatively flat. The adhesive tape 3 is subjected to less tension and is less prone to wrinkles. Therefore, the rear side scraping part 12 is longer, and the pressure generated is smaller. It is sufficient to scrape and press the end of the adhesive tape 3 onto the box 1.

[0065] Preferably, the scraper body 9 is made of polyurethane material, which gives it a certain elasticity and sufficient strength to scrape the tape 3 flat, thereby preventing the edges of the tape 3 from springing back and ensuring the tape 3 is firmly adhered. The bottom sides of the scraper body 9 are set with an inclined structure, which makes it easy to press the tape 3 from top to bottom by contacting the tape 3 through the inclined surface when the scraper body 9 deforms.

[0066] In the tape anti-rebound mechanism of this embodiment, a rear roller 13 is provided on the side of the cutter 2 away from the first anti-rebound unit. The rear roller 13 is rotatably connected to the top of the box 1. The box 1 moves along the conveying direction to push the rear roller 13 to flip and stick to the tape 3 on the rear roller 13 to achieve a fixed connection between the front side of the box 1 and the tape 3.

[0067] Specifically, the rear roller 13 is mounted on the bracket 14 via a connecting frame. When the box 1 moves to the bottom of the bracket 14, the rear roller 13 and the starting end of the tape 3 on its surface are driven to rotate clockwise by the connecting frame and come into contact with the front side of the box 1. The rear roller 13 fixes the starting end of the tape 3 to the box 1, making it easier for the box 1 to move along the conveying direction and pull out the tape 3. The cutter 2 is located between the suction cup 5 and the rear roller 13. After the cutter 2 cuts the tape 3, the rear roller 13 drives the cut end of the tape 3 to rotate downwards so that it can come into contact with the next box 1 and stick the tape 3 onto the box 1.

[0068] Preferably, the front roller 4 is also rotatably mounted on the bracket 14 via the connecting frame. The front roller 4 and the rear roller 13 are driven to rotate in opposite directions via the connecting frame. After passing the rear end of the box 1, the front roller 4 is driven by the connecting frame to rotate downward in a counterclockwise direction, causing the tape adsorbed by the suction cup 5 to stick to the rear side of the box 1.

[0069] On the other hand, this application also proposes a carton sealing machine, including a tape anti-rebound mechanism as described in any of the above embodiments. It is foreseeable that the carton sealing machine in this application includes all the beneficial effects of the tape anti-rebound mechanism in the above embodiments, which will not be repeated here.

[0070] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "rotation", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0071] Although embodiments of the present invention have been shown and described in detail, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tape anti-rebound mechanism, characterized in that, It includes an anti-rebound unit located on the periphery of the box, and the distance between the anti-rebound unit and the box is adjustable. The anti-rebound unit is close to the box to limit the tape cut by the cutter, thereby preventing the tape cut by the cutter from rebounding.

2. The tape anti-rebound mechanism according to claim 1, characterized in that, The anti-rebound unit includes a first anti-rebound unit located between the front roller and the cutter. The first anti-rebound unit is close to the housing and limits the tape cut by the cutter so that the front roller can press the tape tightly and stick it to the housing.

3. The tape anti-rebound mechanism according to claim 2, characterized in that, The first anti-rebound unit is specifically a negative pressure component. The negative pressure component is located above the box and moves back and forth in the vertical direction. The negative pressure component is close to the box and generates negative pressure to absorb the tape cut by the cutter, thereby facilitating the tape to adhere to the box.

4. The tape anti-rebound mechanism according to claim 3, characterized in that, The negative pressure component includes a suction cup with its long side parallel to the direction of movement of the box. The width of the suction cup is not less than the width of the tape. The surface of the suction cup near the tape has adsorption holes arranged in a rectangular array to uniformly adsorb the tape and prevent rebound.

5. The tape anti-rebound mechanism according to claim 4, characterized in that, The front roller abuts against the upper surface of the box. The box moves along the conveying direction, causing the tape cut by the cutter to slide on the lower surface of the suction cup. The front roller presses the tape adsorbed on the suction cup tightly against the upper surface of the box to achieve sealing.

6. The tape anti-rebound mechanism according to claim 4, characterized in that, The negative pressure assembly also includes a first cylinder, which is fixedly installed above the housing. The suction cup is located at the output end of the first cylinder. The first cylinder extends and retracts to drive the suction cup to reciprocate in the vertical direction, thereby facilitating the adsorption of the tape and limiting the position of the tape.

7. The tape anti-rebound mechanism according to claim 6, characterized in that, The negative pressure assembly also includes a connecting plate located above the suction cup. A suction cup guide rod is provided between the suction cup and the connecting plate. The suction cup guide rod passes through the connecting plate and is slidably connected to the connecting plate. The connecting plate is fixedly installed at the output end of the first cylinder.

8. The tape anti-rebound mechanism according to claim 2, characterized in that, The anti-rebound unit also includes a second anti-rebound unit, which is located on the side of the front roller away from the cutter. The second anti-rebound unit is close to the box and reciprocates in the vertical direction to press the tape pasted on the front and rear sides of the box.

9. The tape anti-rebound mechanism according to claim 8, characterized in that, The second anti-rebound unit is specifically a scraper assembly, which is located on the front side of the box in the conveying direction so as to press the tape pasted on the front and rear sides of the box before and after the box passes through the scraper assembly.

10. The tape anti-rebound mechanism according to claim 9, characterized in that, The scraper assembly includes a scraper body, with flattening portions on both sides of the scraper body. The scraper body reciprocates in a vertical direction to drive the flattening portions on both sides to press the tape pasted on the front or rear side of the box body respectively.

11. The tape anti-rebound mechanism according to claim 10, characterized in that, The scraper assembly also includes a second cylinder, which is fixedly installed above the housing. The output end of the second cylinder is fixedly connected to the scraper body. The second cylinder extends and retracts to drive the scraper body to reciprocate in the vertical direction.

12. The tape anti-rebound mechanism according to claim 11, characterized in that, The width of the leveling part is not less than the width of the tape. The leveling part includes a front side leveling part and a rear side leveling part. The length of the front side leveling part is less than the length of the rear side leveling part. The front side leveling part is located between the output end of the second cylinder and the front roller.

13. The tape anti-rebound mechanism according to claim 8, characterized in that, A rear roller is provided on the side of the cutter away from the first anti-rebound unit. The rear roller is rotatably connected to the top of the box. The box moves along the conveying direction to push the rear roller to flip and stick to the tape on the rear roller to achieve a fixed connection between the front side of the box and the tape.

14. A carton sealing machine, characterized in that, Including the tape anti-rebound mechanism as described in any one of claims 1-13.

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