Film connecting mechanism for packaging machine

Abstract

The utility model provides a film connecting mechanism for a packaging machine, which comprises a film connecting component for butting a packaging film, a film pressing component for pressing the packaging film and a limiting component for preventing the packaging film from deviating, a packaging film wound on an air swelling shaft in the packaging rack sequentially penetrates through a film connecting assembly, a film pressing assembly and a limiting assembly and then is connected with a traction mechanism on the packaging rack, a photoelectric sensor used for detecting the thickness of the packaging film on the air swelling shaft is arranged on the packaging rack, and the photoelectric sensor is electrically connected with the film pressing assembly. According to the film connecting mechanism for the packaging machine, constant pulling force is generated by the packaging film through the driving roller and the driven roller of the film pressing assembly, a part of the packaging film is stored through the material basket, and therefore the film connecting assembly of the packaging machine can achieve film connecting operation without shutdown, the adhesive tape is supported and borne through the adhesive tape, and the packaging efficiency is improved. The film connecting operation of the new film and the old film is completed on the bearing table, the film connecting operation is convenient and fast, the film connecting effect is good, and the operation efficiency of the packaging machine is further improved.

Description

Technical Field

[0001] This utility model relates to the field of packaging machinery technology, specifically to a film-attaching mechanism for a packaging machine. Background Technology

[0002] In modern packaging production lines, packaging machinery plays a crucial role. It not only improves production efficiency but also ensures the standardization and safety of product packaging. In existing packaging machinery, when the packaging film on the air shaft runs out, the machine is stopped first. Then, a new packaging film is manually installed onto the air shaft, the first end of the new film is pulled out, and it is manually attached to the end of the old packaging film on the packaging machine using tape. The packaging machine is then restarted to begin the packaging operation.

[0003] Existing packaging machinery requires machine shutdown when the packaging film is used up and needs to be replaced. This shutdown not only reduces the efficiency of the packaging machine but also results in poor film splicing. This solution addresses this technical problem. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a film splicing mechanism for packaging machines. The active and driven rollers of the film pressing assembly generate a constant tension on the packaging film. A portion of the packaging film is stored in a material basket, allowing the film splicing assembly of the packaging machine to perform the splicing operation without stopping the machine. Adhesive tape supports the adhesive tape, and the splicing operation of new and old films is completed on the support platform. The splicing operation is convenient and quick, with good splicing effect, further improving the operating efficiency of the packaging machine.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a film-feeding mechanism for a packaging machine, comprising a film-feeding component for connecting the packaging film, a film-pressing component for pressing the packaging film, and a limiting component for preventing the packaging film from deviating. The packaging film wound on the air shaft in the packaging machine frame passes through the film-feeding component, the film-pressing component, and the limiting component in sequence and is then connected to the traction mechanism on the packaging machine frame.

[0006] The packaging frame is equipped with a photoelectric sensor for detecting the thickness of the packaging film on the air expansion shaft, and the photoelectric sensor is electrically connected to the film pressing assembly.

[0007] The film pressing assembly includes a drive roller rotatably mounted on the packaging frame, a driven roller movably mounted on the side of the drive roller, a drive motor connected to the drive roller, and two electric cylinders whose telescopic ends are respectively connected to both ends of the driven roller. One side of the packaging film is arranged around the drive roller, and the driven roller is detachably abutted against the other side of the packaging film. Both electric cylinders are mounted on the packaging frame, and the photoelectric sensor is electrically connected to the drive motor and the electric cylinders respectively.

[0008] Guide grooves are provided on both sides of the packaging machine frame, and the two ends of the driven roller are slidably disposed in the guide grooves.

[0009] The film bonding assembly includes a support platform fixedly mounted on the packaging machine frame and a detachable pressure plate pressed onto the support platform. The packaging film passes between the support platform and the pressure plate. A connecting rod is rotatably mounted on the side of the support platform. Two tape supports are fixedly mounted on the side of the connecting rod. Tape for bonding two packaging films is detachably pasted between the two tape supports.

[0010] An operating knob is provided at the end of the connecting rod.

[0011] The limiting component includes a support platform fixedly mounted on the packaging machine frame, a guide plate oscillating on the side of the support platform, and two blocks slidably mounted on the guide plate. The packaging film passes through the guide plate and the support platform. The guide plate has an elongated hole. The two blocks pass through the guide plate and contact the two sides of the packaging film.

[0012] The guide plate has supports at both ends, and two guide rods are arranged between the two supports. The guide rods pass through the blocks. A positive and negative screw is rotatably arranged between the two supports. The two blocks are threadedly connected to the positive and negative screws respectively. The two blocks are slidably arranged on the guide plate in opposite directions through the positive and negative screws. A stop post is provided at the end of the two blocks. The stop post passes through the elongated hole and contacts the edge of the packaging film. An operating handwheel is provided at the end of the positive and negative screws.

[0013] It also includes a material basket for holding the packaging film, the material basket being positioned below the film pressing assembly.

[0014] Guide roller 1 and guide roller 2 are respectively provided on both sides of the support platform. The packaging film passes around guide roller 1 and guide roller 2 respectively. Guide roller 1 and guide roller 2 are rotatably mounted on the packaging machine frame.

[0015] A guide roller three is provided on the side of the air expansion shaft, and the packaging film is arranged around the guide roller three.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] (1) The packaging film is subjected to constant tension by the active roller and driven roller of the film pressing assembly. A portion of the packaging film is stored in the material basket, so that the film splicing assembly of the packaging machine can perform film splicing operation without stopping the machine, thereby improving the operating efficiency of the packaging machine.

[0018] (2) By using adhesive tape to support the adhesive tape, the adhesive tape is fixed more evenly. The film splicing operation of the new film and the old film is completed on the support platform. The film splicing operation is convenient and quick, the pattern of the new film and the old film are more convenient to match, the film splicing effect is better, and the operating efficiency of the packaging machine is further improved.

[0019] (3) By rotating the operating handwheel, the two stops move away from each other or move closer to each other under the action of the positive and negative screws, thereby changing the distance between the stops. This allows the limiting component to adapt to the limiting of packaging films of different widths. The limiting component has a good limiting effect on packaging films of different widths, avoiding the packaging film from running off-center and improving the stability of the packaging machine operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a cross-sectional view of the present invention. Figure 1 .

[0022] Figure 3 This is a cross-sectional view of the present invention. Figure 2 .

[0023] Figure 4 This is a schematic diagram of the structure of the membrane assembly of this utility model.

[0024] Figure 5 This is a schematic diagram of the structure of the limiting component of this utility model. Figure 1 .

[0025] Figure 6 This is a schematic diagram of the structure of the limiting component of this utility model. Figure 2 .

[0026] Figure 7 This is a schematic diagram of the structure of the stop block of this utility model.

[0027] Figure 8 This is a schematic diagram showing the position of the photoelectric sensor of this utility model.

[0028] Figure 9 This is a schematic diagram of the membrane bonding process of this utility model.

[0029] In the diagram: 1. Film splicing assembly; 11. Support platform; 12. Pressure plate; 13. Connecting rod; 14. Adhesive tape support; 15. Operating knob; 2. Film pressing assembly; 21. Drive roller; 22. Driven roller; 23. Drive motor; 24. Electric cylinder; 25. Guide groove; 3. Limiting assembly; 31. Support platform; 32. Guide plate; 321. Elongated hole; 322. Support; 323. Guide rod; 324. Positive and negative lead screws; 33. Stop block; 331. Stop column; 34. Operating handwheel; 4. Air shaft; 5. Photoelectric sensor; 6. Material basket; 7. Packaging frame; 71. Guide roller one; 72. Guide roller two; 73. Guide roller three; 8. Packaging film; 9. Adhesive tape. Detailed Implementation

[0030] To more clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0031] See Figures 1-9 A film-feeding mechanism for a packaging machine is characterized in that it includes a film-feeding component 1 for connecting the packaging film 8, a film-pressing component 2 for pressing the packaging film 8, and a limiting component 3 for preventing the packaging film 8 from deviating. The packaging film 8 wound on the air shaft 4 in the packaging machine frame 7 passes through the film-feeding component 1, the film-pressing component 2 and the limiting component 3 in sequence and is then connected to the traction mechanism on the packaging machine frame 7.

[0032] The packaging frame 7 is equipped with a photoelectric sensor 5 for detecting the thickness of the packaging film 8 on the air expansion shaft 4. The photoelectric sensor 5 is electrically connected to the film pressing assembly 2.

[0033] The film pressing assembly 2 includes an active roller 21 rotatably mounted on the packaging frame 7, a driven roller 22 movably mounted on the side of the active roller 21, a drive motor 23 connected to the active roller 21, and two electric cylinders 24 whose telescopic ends are respectively connected to both ends of the driven roller 22. One side of the packaging film 8 is arranged around the active roller 21, and the driven roller 22 is detachably abutted against the other side of the packaging film 8. Both electric cylinders 24 are mounted on the packaging frame 7. The photoelectric sensor 5 is electrically connected to the drive motor 23 and the electric cylinders 24 respectively.

[0034] The drive motor 23 is connected to the drive roller 21 via a reducer. The reducer is existing technology and is not shown in the figure.

[0035] Guide grooves 25 are provided on both sides of the packaging frame 7, and the two ends of the driven roller 22 are slidably disposed in the guide grooves 25.

[0036] The film bonding assembly 1 includes a support platform 11 fixedly mounted on the packaging machine frame 7 and a detachable pressure plate 12 pressed onto the support platform 11. The packaging film 8 passes through the support platform 11 and the pressure plate 12. A connecting rod 13 is rotatably mounted on the side of the support platform 11. Two tape supports 14 are fixedly mounted on the side of the connecting rod 13. Tape 9 for bonding the two packaging films 8 is detachably pasted between the two tape supports 14.

[0037] An operating knob 15 is provided at the end of the connecting rod 13.

[0038] The limiting component 3 includes a support platform 31 fixedly mounted on the packaging machine frame 7, a guide plate 32 oscillatingly mounted on the side of the support platform 31, and two blocks 33 slidably mounted on the guide plate 32. The packaging film 8 passes through the guide plate 32 and the support platform 31. The guide plate 32 is provided with an elongated hole 321. The two blocks 33 pass through the guide plate 32 and contact the two sides of the packaging film 8.

[0039] The guide plate 32 is provided with supports 322 at both ends, and two guide rods 323 are provided between the two supports 322. The guide rods 323 pass through the stop blocks 33. A positive and negative screw 324 is rotatably provided between the two supports 322. The two stop blocks 33 are threadedly connected to the positive and negative screw 324 respectively. The two stop blocks 33 are slidably provided on the guide plate 32 through the positive and negative screw 324. A stop post 331 is provided at the end of the two stop blocks 33. The stop post 331 passes through the elongated hole 321 and contacts the edge of the packaging film 8. An operating handwheel 34 is provided at the end of the positive and negative screw 324.

[0040] It also includes a material basket 6 for holding the packaging film 8, which is located below the film pressing assembly 2.

[0041] Guide roller 1 71 and guide roller 2 72 are respectively provided on both sides of the support platform 11. The packaging film 8 passes around guide roller 1 71 and guide roller 2 72 respectively. Guide roller 1 71 and guide roller 2 72 are rotatably mounted on the packaging machine frame 7.

[0042] A guide roller 3 73 is provided on the side of the air expansion shaft 4, and the packaging film 8 is arranged around the guide roller 3 73.

[0043] The specific working process of this utility model:

[0044] The packaging film 8 on the air expansion shaft 4 passes sequentially between the guide roller 3 73, the guide roller 2 72, the support platform 11 of the film receiving mechanism and the pressure plate 12, then passes sequentially between the guide roller 1 71, the active roller 21 and the driven roller 22 of the film pressing assembly 2, and finally passes between the support platform 31 and the guide plate 32. It is then pulled out by the forward mechanism of the packaging machine. The packaging film 8 is unfolded under the action of stable traction force through the air expansion shaft 4, thus achieving stable feeding of the packaging film 8.

[0045] When there is a large amount of packaging film 8 on the air expansion shaft 4, the photoelectric sensor 5 detects the packaging film 8, and the packaging machine operates normally. When there is a small amount of packaging film 8 on the air expansion shaft 4, that is, when the packaging film 8 needs to be replaced, the photoelectric sensor 5 cannot detect the packaging film 8. At this time, the photoelectric sensor 5 transmits the signal to the electric cylinder 24 and the drive motor 23 respectively. The electric cylinder 24 extends and presses the driven roller 22 to press the packaging film 8 onto the drive roller 21. The drive motor 23 drives the drive roller 21 to rotate, so that the packaging film 8 is provided to the traction mechanism at a constant speed and tension. Then, the remaining packaging film 8 on the air expansion shaft 4 can be pulled out between the guide roller 71 and the driven roller 22 and placed in the material basket 6. Then, a new packaging film 8 is replaced on the air expansion shaft 4.

[0046] With the traction mechanism of the packaging machine running continuously, the first end of the new packaging film 8 is removed and passed around the guide roller 3 73 and guide roller 2 72 in sequence, then flipped onto the overlapping connecting rod 13. The connecting rod 13 is rotated by operating the knob 15, and then the tape 9 is pasted between the two tape supports 14, so that the adhesive side of the tape 9 faces the packaging film 8. Then the connecting rod 13 is rotated in the opposite direction so that the tape support 14 is placed on the carrier table 11. Then the first end of the new packaging film 8 is pasted to half of the tape 9. Then the tail end of the old packaging film 8 is aligned with the pattern of the new packaging film 8 and pasted onto the other half of the tape 9. Finally, the excess part of the tail end of the old packaging film 8 is cut off, and the two ends of the tape 9 are separated from the tape support 14. Then the pressure plate 12 is pressed onto the carrier table 11 to complete the entire film splicing operation. At this time, the traction mechanism of the packaging machine always pulls the packaging film 8 in the material basket 6 through the film pressing assembly 2, and will not affect the film splicing operation.

[0047] The active roller 21 and driven roller 22 of the film pressing assembly 2 generate a constant tension on the packaging film 8. A portion of the packaging film 8 is stored in the material basket 6, so that the film splicing assembly 1 of the packaging machine can perform film splicing operation without stopping the machine, thereby improving the operating efficiency of the packaging machine.

[0048] Furthermore, the adhesive tape 9 is supported by the tape support 14, which makes the tape 9 more evenly fixed. The film splicing operation of the new film and the old film is completed on the support table 11. The film splicing operation is convenient and quick, the pattern matching of the new film and the old film is more convenient, the film splicing effect is better, and the operating efficiency of the packaging machine is further improved.

[0049] When the packaging film 8 passes the support platform 31 and guide plate 32 of the limiting component 3, it is limited by the stop post 331 on the stop block 33, thereby preventing the packaging film 8 from deviating. If the width of the packaging film 8 changes, the two stop blocks 33 are moved away from or closer to each other by rotating the operating handwheel 34 under the action of the positive and negative screws 324, thereby changing the spacing of the stop post 331. This allows the limiting component 3 to adapt to the limiting of packaging films 8 of different widths. The limiting component 3 has a good limiting effect on packaging films 8 of different widths, preventing the packaging film 8 from deviating and improving the stability of the packaging machine operation.

[0050] The technical features of this utility model not described can be implemented by or by using existing technology, and will not be repeated here. Of course, the above description is not a limitation of this utility model, and this utility model is not limited to the examples above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model should also be within the protection scope of this utility model.

Claims

1. A film-attaching mechanism for a packaging machine, characterized in that, It includes a film-joining assembly (1) for joining the packaging film (8), a film-pressing assembly (2) for pressing the packaging film (8), and a limiting assembly (3) for preventing the packaging film (8) from deviating. The packaging film (8) wound on the air shaft (4) in the packaging frame (7) passes through the film-joining assembly (1), the film-pressing assembly (2), and the limiting assembly (3) in sequence and is then connected to the traction mechanism on the packaging frame (7). The packaging frame (7) is equipped with a photoelectric sensor (5) for detecting the thickness of the packaging film (8) on the air shaft (4), and the photoelectric sensor (5) is electrically connected to the film pressing assembly (2); The film pressing assembly (2) includes an active roller (21) rotatably mounted on the packaging frame (7), a driven roller (22) movably mounted on the side of the active roller (21), a drive motor (23) connected to the active roller (21), and two electric cylinders (24) whose telescopic ends are respectively connected to both ends of the driven roller (22). One side of the packaging film (8) is arranged around the active roller (21), and the driven roller (22) is detachably abutted against the other side of the packaging film (8). Both electric cylinders (24) are mounted on the packaging frame (7). The photoelectric sensor (5) is electrically connected to the drive motor (23) and the electric cylinders (24) respectively. The film bonding assembly (1) includes a support platform (11) fixedly mounted on the packaging frame (7) and a pressure plate (12) detachably pressed onto the support platform (11). The packaging film (8) passes between the support platform (11) and the pressure plate (12). A connecting rod (13) is rotatably mounted on the side of the support platform (11). Two tape supports (14) are fixedly mounted on the side of the connecting rod (13). Tape (9) for bonding the two packaging films (8) is detachably pasted between the two tape supports (14). It also includes a material basket (6) for holding the packaging film (8), the material basket (6) being positioned below the film pressing assembly (2).

2. The film-attaching mechanism for a packaging machine according to claim 1, characterized in that, The packaging frame (7) is provided with guide grooves (25) on both sides, and the two ends of the driven roller (22) are slidably disposed in the guide grooves (25).

3. The film-attaching mechanism for a packaging machine according to claim 2, characterized in that, An operation knob (15) is provided at the end of the connecting rod (13).

4. The film-attaching mechanism for a packaging machine according to claim 3, characterized in that, The limiting component (3) includes a support platform (31) fixedly mounted on the packaging frame (7), a guide plate (32) swayingly mounted on the side of the support platform (31), and two blocks (33) slidably mounted on the guide plate (32). The packaging film (8) passes between the guide plate (32) and the support platform (31). The guide plate (32) is provided with an elongated hole (321). The two blocks (33) pass through the guide plate (32) and contact the two sides of the packaging film (8).

5. The film-attaching mechanism for a packaging machine according to claim 4, characterized in that, The guide plate (32) is provided with supports (322) at both ends, and two guide rods (323) are provided between the two supports (322). The guide rods (323) pass through the stop blocks (33). A positive and negative screw rod (324) is rotatably provided between the two supports (322). The two stop blocks (33) are threadedly connected to the positive and negative screw rods (324) respectively. The two stop blocks (33) are slidably provided on the guide plate (32) through the positive and negative screw rods (324). A stop post (331) is provided at the end of the two stop blocks (33). The stop post (331) passes through the elongated hole (321) and contacts the edge of the packaging film (8). An operating handwheel (34) is provided at the end of the positive and negative screw rod (324).

6. The film-attaching mechanism for a packaging machine according to claim 5, characterized in that, The support platform (11) is provided with guide roller 1 (71) and guide roller 2 (72) on both sides respectively. The packaging film (8) passes around the guide roller 1 (71) and guide roller 2 (72) respectively. The guide roller 1 (71) and guide roller 2 (72) are rotatably mounted on the packaging frame (7).

7. The film-attaching mechanism for a packaging machine according to claim 1, characterized in that, A guide roller three (73) is provided on the side of the air shaft (4), and the packaging film (8) is arranged around the guide roller three (73).

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