A pull-tab wire unwinding tool for a bag making machine
By designing an easy-tear cord unwinding fixture for bag making machines, and using adjustment and moving devices to achieve precise adjustment of the easy-tear cord position, the problem that existing devices cannot adapt to different bag types is solved, thus meeting diverse production needs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 上海艾创包装科技有限公司
- Filing Date
- 2025-04-29
- Publication Date
- 2026-06-09
AI Technical Summary
Existing tear strip processing equipment cannot flexibly adjust the position of the tear strip relative to the edge of the paper bag according to changes in bag size, thus failing to meet diverse production needs.
A pull cord unwinding fixture was designed, comprising an unwinding device, an adjusting device, and a moving device. The adjusting device drives the lead screw to rotate, and the moving device moves the support plate, thereby achieving precise adjustment of the pull cord position to adapt to different paper bag specifications.
It achieves precise adjustability of the pull line position, adapts to various paper bag specifications, and ensures processing accuracy and aesthetics.
Smart Images

Figure CN224336880U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a tooling for unwinding easy-tear thread, and more particularly to an easy-tear thread unwinding tooling for a bag making machine. Background Technology
[0002] The easy-tear string function on the paper bag body is currently generally completed on the bag making machine.
[0003] However, the requirements for processing the easy-open tear strips on paper bags are diverse. Existing easy-open tear strip processing equipment typically uses a fixed installation method, which cannot flexibly adjust the position of the tear strip relative to the edge of the paper bag according to changes in bag size. Different sizes of paper bags have different requirements for the position of the tear strip, and traditional equipment lacks a precise position adjustment mechanism, resulting in the tear strip not accurately fitting the designed position on the bag body, affecting functionality and aesthetics. This rigid structural design severely restricts the adaptability of the equipment to different bag types and cannot meet diverse production needs. Summary of the Invention
[0004] The technical problem to be solved by this utility model is to provide an easy-pull unwinding tool for a bag making machine, which solves the problem of not being able to meet diverse processing needs.
[0005] The technical problem to be solved by this utility model is achieved by the following technical solution:
[0006] This utility model provides an easy-tear thread unwinding fixture for a bag-making machine, including an unwinding device, an adjusting device, and a moving device, wherein...
[0007] The unwinding device is mounted on the second mounting frame, and at least one set is provided;
[0008] The unwinding device includes a sliding plate for mounting a slide rail, wherein,
[0009] A support plate is installed on the slide rail;
[0010] The support plate is connected to the connecting seat of the mobile device, wherein...
[0011] The lead screw of the moving device is connected to the adjusting device.
[0012] In a preferred embodiment of this invention, the moving device is disposed on the side of the sliding plate, wherein...
[0013] The moving device includes a lead screw;
[0014] The lead screw is mounted on a lead screw seat on a sliding plate, wherein...
[0015] At least two lead screw seats are provided;
[0016] The end of the lead screw can be connected to the connector of the adjustment device.
[0017] In a preferred embodiment of this invention, the adjusting device is mounted on the end of the adjusting shaft, wherein...
[0018] The adjustment device is located outside the second mounting bracket;
[0019] The adjusting shaft is installed inside the shaft seat, wherein,
[0020] The connector at the other end of the adjusting shaft can be connected to the end of the lead screw.
[0021] In a preferred embodiment of this invention, a mounting plate is provided on the support plate, wherein...
[0022] The mounting plate is provided with a mounting cylinder for mounting the pull cord.
[0023] As a preferred embodiment of this utility model, the mounting plate is further provided with a brake clutch.
[0024] In a preferred embodiment of this invention, a plurality of roller frames are provided on the first mounting frame, and rollers are mounted on the roller frames.
[0025] The rollers are used to pass paper bags.
[0026] The beneficial effects of this utility model are: the position of the connecting seat can be moved by the adjustment device, which in turn drives the movement of the bearing plate and the unwinding device, thus satisfying the positional change of the easy-pull line on the unwinding device relative to the paper bag, thereby meeting different processing requirements; it can be adapted to various paper bag specifications. Attached Figure Description
[0027] Figure 1 This is one of the structural schematic diagrams of this utility model;
[0028] Figure 2 This is the second structural schematic diagram of the present invention;
[0029] Figure 3 This is the third structural schematic diagram of the present invention;
[0030] In the diagram: 100, First mounting frame; 101, Roller frame; 102, Roller; 103, Paper bag; 200, Second mounting frame; 201, Paper feed roller; 300, Unwinding device; 301, Sliding plate; 302, Slide rail; 303, Bearing plate; 304, Mounting plate; 305, Mounting cylinder; 306, Easy-pull cord; 307, Brake clutch; 400, Adjusting device; 401, Adjusting shaft; 402, Shaft seat; 403, Connector; 500, Moving device; 501, Lead screw seat; 502, Lead screw; 503, Connecting seat. Detailed Implementation
[0031] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0032] Example
[0033] like Figure 1-3 As shown, this embodiment provides an easy-tear thread unwinding fixture for a bag making machine, including an unwinding device 300, an adjusting device 400, and a moving device 500, wherein the unwinding device 300 is mounted on a second mounting frame 200, and at least one set is provided.
[0034] The unwinding device 300 includes a sliding plate 301 for mounting a slide rail 302, wherein a bearing plate 303 is mounted on the slide rail 302; the bearing plate 303 is connected to the connecting seat 503 of the moving device 500, wherein the lead screw 502 of the moving device 500 is connected to the adjusting device 400. When the connecting head 403 of the adjusting device 400 is connected to the end of the lead screw 502, rotating the adjusting device 400 can drive the lead screw 502 to rotate, thereby driving the position of the connecting seat 503 to move. As the position of the connecting seat 503 moves, the bearing plate 303 and the unwinding device 300 move, thus satisfying the positional change of the easy-pull cord 306 on the unwinding device 300 relative to the paper bag 103, thereby meeting the needs of different processing and adapting to various paper bag specifications. Regarding the connector 403, the adjusting device 400 can move back and forth to connect or disconnect from the lead screw 502. When connected, it can drive the lead screw 502 to rotate. In another embodiment of this utility model, the connector 403 is configured to be permanently connected to the lead screw 502 for easy adjustment at any time.
[0035] The moving device 500 is disposed on the side of the sliding plate 301, wherein the moving device 500 includes a lead screw 502; the lead screw 502 is mounted on a lead screw seat 501 on the sliding plate 301, wherein at least two lead screw seats 501 are provided; the end of the lead screw 502 can be connected to the connector 403 of the adjusting device 400.
[0036] An adjusting device 400 is installed at the end of an adjusting shaft 401, wherein the adjusting device 400 is located outside the second mounting bracket 200; the adjusting shaft 401 is installed inside a shaft seat 402, wherein the connector 403 at the other end of the adjusting shaft 401 can be connected to the end of a lead screw 502.
[0037] A mounting plate 304 is provided on the support plate 303, and a mounting cylinder 305 is provided on the mounting plate 304 for mounting the easy-pull cord 306.
[0038] The mounting plate 304 is also equipped with a brake clutch 307, which can control the start and stop of the unwinding device 300 and cooperate with the bag making machine to process easy-pull threads.
[0039] The first mounting frame 100 is provided with a plurality of roller frames 101, and rollers 102 are mounted on the roller frames 101, wherein the rollers 102 are used to pass through the paper bag 103.
[0040] Specifically, according to the specifications of the paper bag 103, the operator manually rotates the adjusting device 400 installed on the outside of the second mounting frame 200, driving the adjusting shaft 401 to rotate. The connector 403 at the end of the adjusting shaft 401 is connected to the lead screw 502 of the moving device 500, thereby driving the lead screw 502 to rotate within the lead screw seat 501. As the lead screw 502 rotates, the connecting seat 503 moves along the axial direction of the lead screw 502, thereby driving the bearing plate 303 fixedly connected to it to slide smoothly on the slide rail 302. The mounting plate 304 on the bearing plate 303 moves accordingly, thereby precisely adjusting the lateral position of the easy-tear cord 306 on the mounting cylinder 305 of the unwinding device 300, keeping it in the required position with the edge of the paper bag 103. During operation, the brake clutch 307 on the mounting plate 304 can control the start and stop of the unwinding device 300 as needed, ensuring stable tension of the easy-tear cord 306. Simultaneously, the paper bag 103 is guided and conveyed by multiple rollers 102 on the first mounting frame 100, running synchronously with the adjusted easy-open cord 306 to achieve precise bonding. The entire process enables rapid adaptation to paper bags 103 of different specifications and ensures the precise adjustability of the position of the easy-open cord 306.
[0041] This invention allows the position of the connecting seat to be moved by an adjustment device, which in turn moves the bearing plate and the unwinding device, satisfying the positional change of the easy-pull line on the unwinding device relative to the paper bag, thereby meeting different processing requirements; it can be adapted to various paper bag specifications.
[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A drawstring unwinding fixture for a bag-making machine, characterized in that, It includes an unwinding device (300), an adjusting device (400), and a moving device (500), wherein, The unwinding device (300) is mounted on the second mounting frame (200), and at least one set is provided; The unwinding device (300) includes a sliding plate (301) for mounting a slide rail (302), wherein, A support plate (303) is installed on the slide rail (302); The support plate (303) is connected to the connecting seat (503) of the moving device (500), wherein, The lead screw (502) of the moving device (500) is connected to the adjusting device (400).
2. The easy-tear thread unwinding fixture for a bag-making machine according to claim 1, characterized in that, The moving device (500) is disposed on the side of the sliding plate (301), wherein, The moving device (500) includes a lead screw (502); The lead screw (502) is mounted on a lead screw seat (501) on a sliding plate (301), wherein, At least two lead screw seats (501) are provided; The end of the lead screw (502) can be connected to the connector (403) of the adjusting device (400).
3. The easy-tear thread unwinding fixture for a bag-making machine according to claim 2, characterized in that, The adjusting device (400) is mounted on the end of the adjusting shaft (401), wherein, The adjustment device (400) is located outside the second mounting bracket (200); The adjusting shaft (401) is installed inside the bearing seat (402), wherein, The connector (403) at the other end of the adjusting shaft (401) can be connected to the end of the lead screw (502).
4. The easy-tear thread unwinding fixture for a bag-making machine according to claim 3, characterized in that, A mounting plate (304) is provided on the support plate (303), wherein, The mounting plate (304) is provided with a mounting cylinder (305), which is used to install the pull cord (306).
5. The easy-tear thread unwinding fixture for a bag-making machine according to claim 4, characterized in that, A brake clutch (307) is also provided on the mounting plate (304).
6. The easy-tear thread unwinding fixture for a bag-making machine according to claim 5, characterized in that, A plurality of roller frames (101) are provided on the first mounting frame (100), and rollers (102) are mounted on the roller frames (101). The rollers (102) are used to pass paper bags (103).
7. The easy-tear thread unwinding fixture for a bag-making machine according to claim 3, characterized in that, The connecting seat (503) can slide on the lead screw (502).