Zippered bag making machine with front middle seal

Abstract

The utility model relates to a bag making machine, in particular to a zippered bag making machine with a front middle seal, which comprises an unwinding mechanism, a traction mechanism, an ironing mechanism, a zipper head mounting mechanism, a flattening mechanism and a cutting mechanism. The film feeding path is sequentially provided with an ironing mechanism, a zipper head mounting mechanism, a flattening mechanism and a cutting mechanism, the middle sealing mechanism comprises a middle sealing assembly, the middle sealing assembly comprises a middle sealing ironing plate and a matching part which are oppositely arranged, and the middle sealing ironing plate and the matching part are both arranged in a longitudinal moving mode; the film feeding path is further provided with a slitting knife corresponding to the middle sealing assembly, the slitting knife is located between the ironing mechanisms and the zipper head installation mechanisms, the ironing mechanisms, the zipper head installation mechanisms and the flattening mechanisms are arranged on the two sides of the film feeding path, the middle sealing mechanism is located between the ironing mechanisms, slitting is conducted immediately after ironing, and the flattening mechanisms are located between the zipper head installation mechanisms. And the two sections of bag films do not interfere with each other in subsequent processes such as zipper head mounting and flattening.

Description

Technical Field

[0001] This utility model relates to a bag making machine, and more particularly to a zipper bag making machine with a front-sealed center. Background Technology

[0002] Chinese utility patent CN221315317U discloses a zipper bag making machine. The bag film passes through a hot-pressing mechanism, a zipper head installation mechanism and a flattening mechanism in sequence to complete the production of the zipper at the bag opening. Only one bag can be processed at a time, resulting in low production efficiency. Utility Model Content

[0003] In view of the technical problems existing in the background art, the present utility model aims to provide a zipper bag making machine with a front-sealed design, which processes two bags at a time, and cuts them immediately after hot sealing to avoid mutual interference in subsequent processes.

[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: This dual-station zipper bag making machine includes an unwinding mechanism, a traction mechanism, a heat sealing mechanism, a zipper head mounting mechanism, a flattening mechanism, and a cutting mechanism. The traction mechanism cooperates with the unwinding mechanism to form a film feeding path. The film feeding path is sequentially equipped with the heat sealing mechanism, the zipper head mounting mechanism, the flattening mechanism, and the cutting mechanism. The heat sealing mechanism includes a heat sealing assembly, which includes a first heat sealing plate and a second heat sealing plate arranged opposite to each other. Both the first heat sealing plate and the second heat sealing plate are longitudinally movable. The heat sealing mechanism is equipped with a zipper traction assembly, and the zipper head mounting mechanism... The mechanism is used to install the lock head onto the zipper. The flattening mechanism is used to flatten both ends of the zipper. The cutting mechanism is used to cut the bag film. It also includes a center sealing mechanism. The center sealing mechanism includes a center sealing component. The center sealing component includes a center sealing iron plate and a mating part arranged opposite each other. The center sealing iron plate and the mating part are both longitudinally movable. The film feeding path is also provided with a slitting knife corresponding to the center sealing component. The slitting knife is located between the ironing mechanism and the zipper head mounting mechanism. The ironing mechanism, the zipper head mounting mechanism and the flattening mechanism are provided on both sides of the film feeding path. The center sealing mechanism is located between the ironing mechanisms.

[0005] In this solution, the mating parts are pressed together with the center sealing plate during the hot-pressing process to achieve the center sealing. The two sections of the bag film are then cut by a slitting knife to form two sections of bag film. The machine produces two outputs in one go, resulting in high production speed. The two sections of bag film are cut immediately after hot-pressing, and they will not interfere with each other in subsequent processes such as zipper head installation and flattening.

[0006] Preferably, the mating component includes a plurality of rollers, which are arranged at vertical intervals.

[0007] In this solution, a roller is used in conjunction with a hot knife for center sealing, resulting in better flatness and stability.

[0008] Preferably, the center sealing assembly consists of two sets, and the center sealing mechanism further includes two drive plates on both sides. Both drive plates on both sides are connected to the cylinder for transmission, and both drive plates on both sides are provided with the center sealing hot plate and the mating parts.

[0009] In this solution, two sets of center-sealing components perform center-sealing from both sides of the bag film to ensure the center-sealing effect.

[0010] Preferably, the cylinder is mounted on a mounting plate, the mounting plate is provided with a first guide sleeve, the drive plate is connected to a first guide post, and the first guide post is slidably engaged with the first guide sleeve.

[0011] In this design, the first guide sleeve and the first guide post work together to guide the movement of the drive plate.

[0012] Preferably, both the central sealing plate and the mating component are connected to a second guide post, and the drive plate is provided with a second guide sleeve, wherein the second guide post and the second guide sleeve are slidably engaged.

[0013] In this design, the second guide post and the second guide sleeve work together to guide the movement of the center sealing plate and the mating parts.

[0014] Preferably, both the central sealing plate and the mating component are connected to the driving plate via elastic elements. The elastic elements are sleeved on the connecting post, the connecting post is connected to the central sealing assembly, and the driving plate has through holes for the connecting post to pass through.

[0015] In this solution, the compression of the elastic element provides further action for the sealing plate and mating parts, ensuring the sealing effect.

[0016] Preferably, the central sealing mechanism further includes heat insulation strips on both sides, the heat insulation strips being wound around the roller assembly, and the roller assembly being arranged on the upper and lower sides of the central sealing assembly.

[0017] In this solution, the part of the heat insulation protective bag film that does not need to be heat-sealed.

[0018] Preferably, the zipper head mounting mechanism includes a snap fastener and a zipper head slide. The snap fastener includes snap fastener blocks that are opposite to and raised and lowered. The zipper head slide connects the snap fastener and the vibrating plate. The zipper head slide is equipped with a discharge component at its outlet, and the discharge component is laterally movable.

[0019] In this scheme, the vibratory feeder feeds the zipper head into the zipper head slide, the discharge component pushes the zipper head out of the sliding discharge port, and the corresponding snap fastener presses it to complete the installation of the zipper head.

[0020] Preferably, both the hot-pressing mechanism and the center-sealing mechanism are laterally adjustable.

[0021] In this solution, the lateral movement adjustment of the sealing mechanism and the hot-pressing mechanism can adapt to the production of bags of different specifications, producing two small bags at a time as well as large bags.

[0022] The beneficial effects of this utility model are as follows: during the hot-pressing process, the mating parts are pressed together with the center-sealing hot-pressing plate for center sealing, and then the two sections of bag film are separated by a slitting knife to form two sections of bag film. This allows for dual output from a single machine, resulting in high production speed. Furthermore, the two sections of bag film are immediately separated after hot pressing, ensuring no interference between them during subsequent processes such as zipper head installation and flattening. Therefore, this utility model possesses substantial features and represents a significant advancement compared to existing technologies. Attached Figure Description

[0023] The following description, in conjunction with the accompanying drawings, details the embodiments and working principles of this utility model.

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0025] Figure 2 This is a three-dimensional structural diagram of the hot-pressing mechanism in this utility model.

[0026] Figure 3 This is a three-dimensional structural diagram of the sealing mechanism in this utility model.

[0027] Figure 4 This is a three-dimensional structural diagram of the zipper head mounting mechanism in this utility model.

[0028] In the diagram: 1. Unwinding mechanism; 2. Ironing mechanism; 3. Zipper head mounting mechanism; 4. Flattening mechanism; 5. Cutting mechanism; 7. First ironing plate; 8. Second ironing plate; 9. Center sealing mechanism; 10. Center sealing assembly; 11. Center sealing ironing plate; 12. Mating component; 13. Roller; 14. Drive plate; 15. Cylinder; 16. Mounting plate; 17. First guide sleeve; 18. First guide post; 19. Second guide post; 20. Second guide sleeve; 21. Elastic component; 22. Connecting post; 23. Insulating heat pipe; 24. Roller assembly; 25. Fastening device; 26. Fastening block; 27. Zipper head slide; 28. Discharge component. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the implementation of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0030] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and 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. Therefore, they should not be construed as limitations on this application.

[0031] In the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0032] See appendix Figures 1-4 This embodiment of the invention provides a pre-sealed zipper bag making machine, comprising an unwinding mechanism 1, a traction mechanism, a hot-pressing mechanism 2, a zipper head mounting mechanism 3, a flattening mechanism 4, and a cutting mechanism 5. The traction mechanism cooperates with the unwinding mechanism 1 to form a film feeding path. The hot-pressing mechanism 2, the zipper head mounting mechanism 3, the flattening mechanism 4, and the cutting mechanism 5 are sequentially arranged on the film feeding path. The hot-pressing mechanism 2 includes a hot-pressing assembly, which includes a first hot-pressing plate 7 and a second hot-pressing plate 8 arranged opposite to each other. Both the first hot-pressing plate 7 and the second hot-pressing plate 8 are longitudinally movable. The hot-pressing mechanism 2 is equipped with a zipper traction assembly. The zipper head mounting mechanism 3 is used to install the lock head to the zipper. The flattening mechanism 4 is used to flatten both ends of the zipper. The cutting mechanism 5 is used to cut the bag film.

[0033] The system also includes a center sealing mechanism 9, which comprises a center sealing component 10. The center sealing component 10 includes a center sealing heat sealing plate 11 and a mating component 12 arranged opposite to each other. Both the center sealing heat sealing plate 11 and the mating component 12 are longitudinally movable. The mating component 12 includes multiple rollers 13, which are arranged at vertical intervals. A slitting knife corresponding to the center sealing component 10 is also provided on the film feeding path. The slitting knife is located between the heat sealing mechanism 2 and the zipper head mounting mechanism 3. The heat sealing mechanism 2, the zipper head mounting mechanism 3, and the flattening mechanism 4 are provided on both sides of the film feeding path. The center sealing mechanism 9 is located between the heat sealing mechanisms 2. Both the heat sealing mechanism 2 and the center sealing mechanism 9 are laterally movable and adjustable.

[0034] In this embodiment, the unwinding mechanism 1, in conjunction with the traction mechanism, conveys the bag film to form a film feeding path. At the hot-pressing mechanism 2, the bag film is conveyed vertically, followed by longitudinal conveying. The hot-pressing mechanism 2 and the center-sealing mechanism 9 operate synchronously. The first hot-pressing plate 7 and the second hot-pressing plate 8 are pressed together, and the center-sealing hot-pressing plate 11 and the mating part 12 are pressed together, simultaneously completing the hot-pressing of the center seal and the zipper. Afterward, the bag film is divided in two at the slitting knife, forming two segments. These segments then sequentially pass through the zipper head installation mechanism 3, the flattening mechanism 4, and the cutting mechanism 5 to complete the installation of the zipper head, the flattening of both ends of the zipper, and the cutting of the bag film. The unwinding mechanism 1 and the traction mechanism 9... The mechanism, zipper traction assembly, flattening mechanism 4, and cutting mechanism 5 are all mature technologies. For zipper tapes of different specifications, the lateral movement adjustment of the hot-pressing mechanism 2 and the center sealing mechanism 9 can produce two small bags or one large bag at a time. The two small bags can be of different specifications, which is compatible with production orders of different specifications. Because the bag film is in one piece before the slitting knife cuts it, the two pieces of bag film are transported synchronously. The hot-pressing assembly also includes a cooling aluminum strip and a steel ruler for positioning the bag opening. The cooling aluminum strip is set below the first hot-pressing plate 7 and the second hot-pressing plate 8. The steel ruler is set vertically and can be adjusted laterally and vertically. The bag opening is aligned with the steel ruler to complete the positioning.

[0035] In other alternative embodiments, the mating part 12 may also be a hot plate.

[0036] See appendix Figure 3 The center sealing assembly 10 consists of two sets. The center sealing mechanism 9 also includes two side drive plates 14, both of which are connected to cylinders 15. Each side drive plate 14 is equipped with a center sealing heat plate 11 and a mating component 12. The cylinder 15 is mounted on a mounting plate 16, which has a first guide sleeve 17. A first guide post 18 is connected to each drive plate 14, and the first guide post 18 slides in conjunction with the first guide sleeve 17. Both the center sealing heat plate 11 and the mating component 12 are connected to second guide posts 19. The drive plate 14 is provided with a second guide sleeve 20, and the second guide post 19 is slidably engaged with the second guide sleeve 20. The middle sealing hot plate 11 and the mating part 12 are both connected to the drive plate 14 through the elastic element 21. The elastic element 21 is sleeved on the connecting post 22. The connecting post 22 is connected to the middle sealing assembly 10. The drive plate 14 is provided with a through hole for the connecting post 22 to pass through. The middle sealing mechanism 9 also includes heat insulation tapes 23 on both sides. The heat insulation tapes 23 are wound around the roller 13 group. The roller 13 group is arranged on the upper and lower sides of the middle sealing assembly 10.

[0037] In this embodiment, the cylinder 15 drives the drive plate 14 to move the mating part 12 and the center sealing plate 11 longitudinally. The compression of the elastic element 21 makes the mating part 12 and the center sealing plate 11 press with sufficient force. The design of the guide post and guide sleeve ensures the accuracy of the center sealing position.

[0038] See appendixFigure 4 The zipper head mounting mechanism 3 includes a snap fastener 25 and a zipper head slide 27. The snap fastener 25 includes snap fastener blocks 26 that are opposite to and raised and lowered. The zipper head slide 27 connects the snap fastener 25 and the vibrating plate. The zipper head slide 27 is equipped with a discharge part 28 at its outlet. The discharge part 28 is laterally movable.

[0039] In this embodiment, the vibratory feeder sends the zipper head into the zipper head slide 27. The zipper head slides along the zipper head slide 27 to the discharge port. The discharge component 28 moves laterally to push the zipper head out of the discharge port to the zipper at the bag opening. The snap fastener 26 presses together to complete the installation of the zipper head.

[0040] The above description represents the preferred embodiment of this utility model. It should be noted that the protection scope of this utility model is not limited thereto. For those skilled in the art, various improvements, modifications, or equivalent substitutions can be made without departing from the equivalent inventive concept disclosed in this utility model, and these modifications and substitutions are also considered to be within the protection scope of this utility model.

Claims

1. A zipper bag making machine with a pre-sealed center, comprising: Unwinding mechanism (1); The traction mechanism, in conjunction with the unwinding mechanism (1), forms a film feeding path, and the film feeding path is sequentially provided with a hot-pressing mechanism (2), a zipper head mounting mechanism (3), a flattening mechanism (4), and a cutting mechanism (5). The hot-pressing mechanism (2) includes a hot-pressing assembly, which includes a first hot-pressing plate (7) and a second hot-pressing plate (8) arranged opposite to each other. The first hot-pressing plate (7) and the second hot-pressing plate (8) are both longitudinally movable. The hot-pressing mechanism (2) is equipped with a zipper traction assembly. Zipper head mounting mechanism (3), which is used to mount the lock head to the zipper; Flattening mechanism (4), which is used to flatten both ends of the zipper; Cutting mechanism (5), which is used to cut the bag film; Its features are: It also includes a center sealing mechanism (9), which includes a center sealing component (10), which includes a center sealing hot plate (11) and a mating part (12) arranged opposite to each other, and the center sealing hot plate (11) and the mating part (12) are both arranged to move longitudinally; The film feeding path is also provided with a slitting knife corresponding to the center sealing component (10). The slitting knife is located between the hot-pressing mechanism (2) and the zipper head mounting mechanism (3). The hot-pressing mechanism (2), the zipper head mounting mechanism (3) and the flattening mechanism (4) are provided on both sides of the film feeding path. The center sealing mechanism (9) is located between the hot-pressing mechanism (2).

2. The zipper bag making machine with pre-sealed center as described in claim 1, characterized in that: The mating component (12) includes a plurality of rollers (13) which are arranged at vertical intervals.

3. A zipper bag making machine with a pre-sealed center as described in claim 2, characterized in that: The middle sealing assembly (10) consists of two sets. The middle sealing mechanism (9) also includes two driving plates (14) on both sides. Both driving plates (14) are connected to the cylinder (15) for transmission. Both driving plates (14) on both sides are provided with the middle sealing hot plate (11) and the mating part (12).

4. A zipper bag making machine with a pre-sealed center as described in claim 3, characterized in that: The cylinder (15) is mounted on the mounting plate (16), the mounting plate (16) is provided with a first guide sleeve (17), the drive plate (14) is connected to a first guide post (18), and the first guide post (18) and the first guide sleeve (17) are in sliding cooperation.

5. A zipper bag making machine with a pre-sealed center as described in claim 3, characterized in that: The central sealing heat plate (11) and the mating part (12) are both connected to a second guide post (19), and the driving plate (14) is provided with a second guide sleeve (20). The second guide post (19) and the second guide sleeve (20) are slidably engaged.

6. A zipper bag making machine with a pre-sealed center as described in claim 3, characterized in that: The central sealing plate (11) and the mating part (12) are both connected to the driving plate (14) through the elastic element (21). The elastic element (21) is sleeved on the connecting post (22). The connecting post (22) is connected to the central sealing assembly (10). The driving plate (14) has a through hole for the connecting post (22) to pass through.

7. A zipper bag making machine with a pre-sealed center as described in claim 1, characterized in that: The central sealing mechanism (9) also includes two insulating heat strips (23) on both sides, which are wrapped around the roller (13) group, which is arranged on the upper and lower sides of the central sealing assembly (10).

8. A zipper bag making machine with a pre-sealed center as described in claim 1, characterized in that: The zipper head mounting mechanism (3) includes A snap fastening device (25) includes snap fastening blocks (26) that are opposite to and raised and lowered. The zipper head slide (27) connects the snap fastener (25) and the vibrating plate. The zipper head slide (27) is equipped with a discharge part (28) at the discharge port. The discharge part (28) is laterally movable.

9. A zipper bag making machine with a pre-sealed center as described in claim 1, characterized in that: Both the hot-pressing mechanism (2) and the sealing mechanism (9) are laterally adjustable.

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