Bag making machine convenient to adjust
By introducing a liftable multi-roller cutting mechanism and a hexagonal shaft transmission system into the bag making machine, the problem of the cutting device being unable to adjust the size of the packaging bag has been solved, enabling rapid switching of packaging bag length and stable cutting, thereby improving production efficiency and cutting accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-13
- Publication Date
- 2026-04-14
AI Technical Summary
Existing cutting devices in bag-making machines cannot adjust the cutting size of packaging bags as needed, resulting in low production efficiency.
It adopts a liftable multi-roller cutting mechanism and a hexagonal shaft transmission system, combined with a servo motor and bevel gear set, to achieve rapid switching of packaging bag length and stable cutting.
It significantly improves production efficiency and ease of adjustment, reduces downtime for adjustment, and ensures cutting accuracy and equipment reliability.
Smart Images

Figure CN224116870U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bag making machine technology, and specifically discloses a bag making machine that is easy to adjust. Background Technology
[0002] A bag-making machine is a piece of equipment used to produce various plastic or other material packaging bags. It has a wide processing range and can handle various sizes, thicknesses, and specifications of plastics or other materials.
[0003] When using a bag-making machine, the cutting device is an important component. The cutting device is used to cut the material used by the bag-making machine to obtain the required shape and size of the packaging bag. Existing cutting devices cannot adjust the cutting size of the packaging bag as needed during the cutting process. Therefore, a bag-making machine that is easy to adjust is needed to solve this problem. Utility Model Content
[0004] This invention proposes an easily adjustable bag-making machine. Through a multi-roller cutting mechanism with adjustable height and a hexagonal shaft transmission system, it can achieve rapid switching and stable cutting of packaging bag length, significantly improving production efficiency and ease of adjustment.
[0005] This utility model is implemented as follows: an easily adjustable bag-making machine includes a worktable. A support frame is fixedly connected through the inner wall surface of the worktable. A cutting mechanism that can move up and down is set inside the support frame through an adjustment mechanism. The cutting mechanism includes a sliding frame. A hexagonal shaft is rotatably connected to the inner wall of the support frame. A first drive motor with its output end fixedly connected to the hexagonal shaft is installed on the upper end surface of the support frame. Multiple rotating rollers are rotatably connected to the inner wall of the sliding frame through a first coupling. Multiple cutters are fixedly connected to the outer walls of the multiple rotating rollers. The number of cutters on the outer walls of the multiple rotating rollers is not equal. Multiple mounting plates are fixedly connected to the outer wall of the sliding frame. A first sleeve that is slidably connected to the hexagonal shaft is rotatably connected inside the multiple mounting plates. A first bevel gear is fixedly connected to the outer wall of the multiple first sleeves. A second bevel gear that meshes with the first bevel gear is fixedly connected to the outer wall of the multiple first couplings near the hexagonal shaft.
[0006] As a preferred embodiment of the present invention for an easily adjustable bag-making machine, the adjustment mechanism includes a threaded rod rotatably connected to the inner wall of the support frame, a servo motor with its output end fixedly connected to the threaded rod is mounted on the upper end face of the support frame, and the slide frame is threadedly connected to the threaded rod.
[0007] As a preferred embodiment of the present invention, the outer wall of the worktable is rotatably connected to two vertically distributed conveying rollers via ear plates and second connecting shafts. The outer walls of the two second connecting shafts on one side are fixedly connected to meshing spur gears, and the outer wall of the ear plate on the other side is equipped with a second drive motor whose output end is fixedly connected to one of the second connecting shafts.
[0008] As a preferred embodiment of this utility model of a bag-making machine that is easy to adjust, the upper end face of the worktable is rotatably connected to an unwinding roller via an ear plate.
[0009] As a preferred embodiment of this utility model of a bag-making machine that is easy to adjust, the upper and lower sides of the slide frame are rotatably connected to a second sleeve that is slidably connected to a hexagonal shaft.
[0010] As a preferred embodiment of this utility model of an easily adjustable bag-making machine, the outer wall of the support frame is provided with a controller, and the servo motor, the first drive motor and the second drive motor are all electrically connected to the controller.
[0011] The beneficial effects of this utility model are:
[0012] 1. The height of the slide frame is adjusted by driving the threaded rod with a servo motor, which allows the rollers with different numbers of cutters to quickly switch to the working position. This enables diversified cutting of packaging bag lengths without changing the cutters, significantly reducing downtime for adjustment and improving production efficiency.
[0013] 2. A hexagonal shaft is used in conjunction with a bevel gear set to drive multiple rollers to rotate synchronously, ensuring consistent cutter action; at the same time, through the cooperation of the sliding sleeve and the hexagonal shaft, the power transmission is maintained without interruption during the lifting and lowering of the sliding frame, improving cutting accuracy and equipment reliability. Attached Figure Description
[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0015] Figure 1 This is an overall structural diagram of a bag-making machine that is easy to adjust according to the present invention.
[0016] Figure 2 This is a right view of a bag-making machine that is easy to adjust according to the present invention.
[0017] Figure 3 This is a structural diagram of the sliding frame of this utility model.
[0018] The markings in the diagram are: 1. Workbench; 2. Support frame; 3. Threaded rod; 4. Servo motor; 5. Slide frame; 6. Hexagonal shaft; 7. First drive motor; 8. Rotary roller; 9. First connecting shaft; 10. Cutter; 11. Mounting plate; 12. First sleeve; 13. First bevel gear; 14. Second bevel gear; 15. Second connecting shaft; 16. Conveyor roller; 17. Spur gear; 18. Second drive motor; 19. Unwinding roller; 20. Second sleeve. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.
[0020] Please see Figure 1-3 An easily adjustable bag-making machine includes a worktable 1. A support frame 2 is fixedly connected through the inner wall surface of the worktable 1. A cutting mechanism that can move up and down is set inside the support frame 2 through an adjustment mechanism. The cutting mechanism includes a sliding frame 5. A hexagonal shaft 6 is rotatably connected to the inner wall of the support frame 2. A first drive motor 7 with its output end fixedly connected to the hexagonal shaft 6 is installed on the upper end of the support frame 2. Multiple rotating rollers 8 are rotatably connected to the inner wall of the sliding frame 5 through a first connecting shaft 9. Multiple cutters 10 are fixedly connected to the outer wall of each of the multiple rotating rollers 8. The number of cutters 10 on the outer wall of the multiple rotating rollers 8 is not equal. Multiple mounting plates 11 are fixedly connected to the outer wall of the sliding frame 5. A first sleeve 12 that is slidably connected to the hexagonal shaft 6 is rotatably connected inside the multiple mounting plates 11. A first bevel gear 13 is fixedly connected to the outer wall of each of the multiple first sleeves 12. A second bevel gear 14 that meshes with the first bevel gear 13 is fixedly connected to the outer wall of each of the multiple first connecting shafts 9 near the hexagonal shaft 6.
[0021] In this embodiment: the first drive motor 7 is started, which drives the hexagonal shaft 6 to rotate, thereby driving multiple first sleeves 12 to rotate. The multiple first sleeves 12 further drive multiple first bevel gears 13 to rotate synchronously, thereby driving multiple second bevel gears 14 to rotate. The multiple second bevel gears 14 further drive multiple rotating rollers 8 to rotate through multiple first connecting shafts 9, thereby driving multiple cutters 10 to rotate. The number of cutters 10 on the outer wall of the multiple rotating rollers 8 is different, so that the cutting of the packaging bag material is cut by the different rotating rollers 8 driving the cutters 10 on their outer walls. This makes it easy to cut the packaging bag material into different lengths, which is highly practical.
[0022] As a technical optimization of this utility model, the adjustment mechanism includes a threaded rod 3 rotatably connected to the inner wall of the support frame 2, a servo motor 4 with its output end fixedly connected to the threaded rod 3 is installed on the upper end surface of the support frame 2, and a sliding frame 5 is threadedly connected to the threaded rod 3.
[0023] In this embodiment: the servo motor 4 is started, the servo motor 4 drives the threaded rod 3 to rotate, which in turn drives the slide frame 5 to move up and down. The slide frame 5 further drives multiple rotating rollers 8 to move up and down, so that different rotating rollers 8 move to the upper side of the worktable 1 to cut the packaging bag raw materials.
[0024] As a technical optimization of this utility model, the outer wall of the workbench 1 is rotatably connected to two vertically distributed conveying rollers 16 via ear plates and second connecting shafts 15. The outer walls of the two second connecting shafts 15 on one side are fixedly connected to mutually meshing spur gears 17, and the outer wall of the ear plate on the other side is equipped with a second drive motor 18 whose output end is fixedly connected to one of the second connecting shafts 15.
[0025] In this embodiment: the second drive motor 18 is started, and the second drive motor 18 drives the two conveying rollers 16 to rotate synchronously in opposite directions through two spur gears 17 to convey the raw materials of the packaging bag.
[0026] As a technical optimization of this utility model, the upper end face of the workbench 1 is rotatably connected to the unwinding roller 19 via an ear plate.
[0027] In this embodiment, the unwinding roller 19 facilitates the placement of the packaging bag raw materials.
[0028] As a technical optimization of this utility model, the upper and lower sides of the sliding frame 5 are rotatably connected with a second sleeve 20 that is slidably connected to the hexagonal shaft 6.
[0029] In this embodiment, the second sleeve 20 facilitates the limiting of the sliding frame 5, making the up-and-down movement of the sliding frame 5 stable.
[0030] As a technical optimization of this utility model, a controller is provided on the outer wall of the support frame 2, and the servo motor 4, the first drive motor 7 and the second drive motor 18 are all electrically connected to the controller.
[0031] In this embodiment, the controller facilitates the normal operation of the servo motor 4, the first drive motor 7, and the second drive motor 18.
[0032] The working principle and usage process of this utility model are as follows: First, the packaging bag material is placed on the unwinding roller 19, with one end of the material extending between the two conveying rollers 16. The second drive motor 18 is then started. The second drive motor 18 drives the two conveying rollers 16 to rotate synchronously in opposite directions via two spur gears 17, conveying the packaging bag material. Next, the first drive motor 7 is started. The first drive motor 7 drives the hexagonal shaft 6 to rotate, which in turn drives multiple first sleeves 12 to rotate. The multiple first sleeves 12 further drive multiple first bevel gears 13 to rotate synchronously, which in turn drives multiple second bevel gears 14 to rotate. Wheel 14 further drives multiple rotating rollers 8 to rotate via multiple first coupling shafts 9, which in turn drives multiple cutters 10 to rotate, cutting the packaging bag material. When adjusting the cutting length, servo motor 4 is started. Servo motor 4 drives threaded rod 3 to rotate, which in turn drives slide frame 5 to move up and down. Slide frame 5 further drives multiple rotating rollers 8 to move up and down, so that different rotating rollers 8 move to the upper side of worktable 1 to cut the packaging bag material. The number of cutters 10 on the outer wall of multiple rotating rollers 8 is different, so the cutting of the packaging bag material is carried out by different rotating rollers 8 driving the cutters 10 on their outer walls to rotate. This makes it easy to cut the packaging bag material into different lengths, which is highly practical.
[0033] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.
[0034] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.
Claims
1. An easily adjustable bag-making machine, comprising a worktable (1), characterized in that: A support frame (2) is fixedly connected to the inner wall surface of the workbench (1). A cutting mechanism that can move up and down is set inside the support frame (2) through an adjustment mechanism. The cutting mechanism includes a sliding frame (5). A hexagonal shaft (6) is rotatably connected to the inner wall of the support frame (2). A first drive motor (7) with its output end fixedly connected to the hexagonal shaft (6) is installed on the upper end face of the support frame (2). Multiple rotating rollers (8) are rotatably connected to the inner wall of the sliding frame (5) through a first connecting shaft (9). The outer walls of the multiple rotating rollers (8) are all fixedly connected to... Multiple cutters (10) are connected, and the number of cutters (10) on the outer wall of the multiple rollers (8) is not equal. Multiple mounting plates (11) are fixedly connected to the outer wall of the slide frame (5). The interior of each of the multiple mounting plates (11) is rotatably connected to a first sleeve (12) that is slidably connected to a hexagonal shaft (6). The outer wall of each of the multiple first sleeves (12) is fixedly connected to a first bevel gear (13). The outer wall of each of the multiple first connecting shafts (9) near the hexagonal shaft (6) is fixedly connected to a second bevel gear (14) that meshes with the first bevel gear (13).
2. The easily adjustable bag-making machine according to claim 1, characterized in that: The adjustment mechanism includes a threaded rod (3) rotatably connected to the inner wall of the support frame (2), and a servo motor (4) with its output end fixedly connected to the threaded rod (3) is installed on the upper end face of the support frame (2). The slide frame (5) is threadedly connected to the threaded rod (3).
3. The bag-making machine that is easy to adjust according to claim 2, characterized in that: The outer wall of the workbench (1) is rotatably connected to two vertically distributed conveying rollers (16) via an ear plate and a second connecting shaft (15). The outer walls of the two second connecting shafts (15) on one side are fixedly connected with meshing spur gears (17), and the outer wall of the ear plate on the other side is equipped with a second drive motor (18) whose output end is fixedly connected to one of the second connecting shafts (15).
4. The easily adjustable bag-making machine according to claim 1, characterized in that: The upper end face of the workbench (1) is rotatably connected to the unwinding roller (19) via an ear plate.
5. The easily adjustable bag-making machine according to claim 1, characterized in that: The upper and lower sides of the slide frame (5) are rotatably connected to a second sleeve (20) that is slidably connected to the hexagonal shaft (6).
6. The easily adjustable bag-making machine according to claim 3, characterized in that: The outer wall of the support frame (2) is equipped with a controller, and the servo motor (4), the first drive motor (7) and the second drive motor (18) are all electrically connected to the controller.