Bag making machine
The magnetic shaft frame system simplifies the material feeding process of the bag making machine, solves the problem of difficult shaft installation, achieves shaft stability and convenient disassembly, and improves feeding efficiency.
Patent Information
- Application Number
- CN202520463682.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-17
AI Technical Summary
The feeding operation of the bag making machine is complicated, especially when the shaft is passed through the material roll and fastened to the bag making machine.
The system employs a magnetic shaft holder system, which includes a magnet, a stepper motor, and a threaded column. The shaft is magnetically attracted to the magnet, and the position of the magnet is controlled by the motor, simplifying the installation and removal process of the shaft.
It enables stable installation and easy disassembly of the rotating shaft, reduces operational complexity, and improves material loading efficiency.
Smart Images

Figure CN223835149U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of bag making machine technology, and in particular relates to a bag making machine. Background Technology
[0002] A bag-making machine is a machine that produces various plastic packaging bags or other packaging bags. Its processing range includes packaging bags of various sizes, thicknesses and specifications made of plastic or other materials. Generally speaking, plastic packaging bags are the main product.
[0003] When feeding material into a bag-making machine, the shaft needs to be passed through the material roll, and then both ends of the shaft are fastened onto the bag-making machine. Because the operation of the locking and aligning the holes is relatively complicated, the feeding operation of the bag-making machine is quite troublesome.
[0004] Therefore, we propose a bag-making machine to solve the above problems. Utility Model Content
[0005] The purpose of this utility model is to solve the problem of cumbersome material feeding operation in bag making machines, and to propose a bag making machine.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A bag-making machine includes a bag-making machine body. A magnetic suction shaft frame is installed at the tail of the bag-making machine body. A rotating shaft is mounted on the magnetic suction shaft frame. The magnetic suction shaft frame includes a guide frame, a rotating wheel, a magnet, a stepper motor, and a threaded column. The guide frame is fixedly connected to the bag-making machine body. The stepper motor is fixedly connected to the bag-making machine body. The rotating wheel is rotatably mounted on the upper part of the guide frame. The magnet is slidably mounted inside the guide frame. The threaded column is rotatably mounted on the lower part of the guide frame. The threaded column is threaded into the magnet. The magnet is magnetically attracted to the rotating shaft. The lower end of the threaded column is fixedly connected to the rotor of the stepper motor. The rotating shaft is mounted on the rotating wheel. The shaft is passed through the target material roll and then mounted on the rotating wheel. The rotating wheel guides the shaft to rotate, allowing the bag making machine to smoothly pick up the material. The magnetic block acts downward on the shaft, stabilizing it on the rotating wheel. A stepper motor drives the threaded column to rotate, which in turn causes the magnetic block to slide downward, moving it away from the shaft and reducing the force exerted by the magnetic block on the shaft, thus adjusting the suction force. This also facilitates the assembly and disassembly of the shaft.
[0008] Preferably, the guide frame includes a frame body and a fixed shaft, with the fixed shaft fixedly connected to the upper part of the frame body; the frame body is fixedly connected to the main body of the bag-making machine. The fixed shaft guides the rotation of the rotating wheel, and the frame body guides the lifting and lowering of the magnet block, facilitating the constraint of the movement of the rotating wheel and the magnet block.
[0009] Preferably, the rotating wheel includes a wheel body and a retaining ring. The retaining ring is fixedly connected to the outside of the wheel body, and the wheel body is rotatably mounted on a fixed shaft. The rotating wheel is engaged with the shaft via the retaining ring, and the wheel body drives the retaining ring to rotate, causing the retaining ring to act on the shaft, thus reducing the rotational resistance of the shaft.
[0010] Preferably, the magnet block includes a magnet block body and a slider, the slider being symmetrically and fixedly connected to the side of the magnet block body; the slider is slidably engaged within the frame body, and the magnet block body is in movable contact with the frame body. The frame body guides the slider's movement, and the slider constrains the magnet block body, keeping it within the frame body and facilitating the lifting and lowering of the magnet block.
[0011] Preferably, the threaded column includes a threaded column body, a retaining ring, and a rotating column. The lower end of the threaded column body is fixedly connected to the upper end of the rotating column. The retaining ring is fixedly connected between the threaded column body and the rotating column. The threaded column body is threadedly installed inside the magnet block. The retaining ring and the rotating column are rotatably installed on the lower part of the frame. The lower end of the rotating column is fixedly connected to the rotor of the stepper motor. The stepper motor drives the rotating column to rotate, which in turn drives the threaded column body to rotate, causing the threaded column body to move the magnet block up and down, facilitating the control of the magnet block's lifting and lowering.
[0012] Preferably, the threaded post further includes a sleeve, which is fixedly connected to the outside of the rotating post. When the stepper motor fails, the sleeve can be manually turned to rotate the rotating post, which in turn drives the threaded post to rotate, facilitating manual operation of the threaded post in case of failure.
[0013] Preferably, the rotating shaft includes a shaft body, and an annular groove is formed on the side of the shaft body. The retaining ring is engaged in the annular groove, and the magnet block is magnetically attracted to the shaft body. The rotating wheel guides the rotation of the shaft body, and the engagement of the wheel body with the annular groove increases the lateral stability of the rotating shaft.
[0014] In summary, the technical effects and advantages of this utility model are as follows:
[0015] 1. Pass the rotating shaft through the target material roll, then place the rotating shaft on the rotating wheel. Use the rotating wheel to guide the rotation of the rotating shaft so that the bag making machine can smoothly pick up the material. Use the magnetic block to act downward on the rotating shaft to stabilize the rotating shaft on the rotating wheel. Drive the threaded column to rotate through the stepper motor. The threaded column drives the magnetic block to slide downward, so that the magnetic block is away from the rotating shaft, reducing the force of the magnetic block on the rotating shaft and adjusting the attraction force. This makes it easy to disassemble and assemble the rotating shaft.
[0016] 2. The fixed shaft guides the rotation of the wheel, and the frame guides the lifting and lowering of the magnet block, which facilitates the restraint of the movement of the wheel and the magnet block.
[0017] 3. The wheel is engaged with the shaft via a snap ring. The wheel body drives the snap ring to rotate, which in turn acts on the shaft, thus reducing the rotational resistance of the shaft.
[0018] 4. Use the frame to guide the sliding rails to constrain the magnet block, keeping it within the frame and facilitating its lifting and lowering.
[0019] 5. A stepper motor drives the rotating column to rotate, which in turn drives the threaded column to rotate, causing the threaded column to lift and lower the magnet block, making it easy to control the lifting and lowering of the magnet block.
[0020] 6. When the stepper motor is damaged, manually turn the screw sleeve to drive the rotating column to rotate, which in turn drives the threaded column to rotate, making it convenient to manually rotate the threaded column in case of failure.
[0021] 7. The shaft is guided to rotate by a rotating wheel, and the wheel is engaged with the annular groove to increase the lateral stability of the shaft. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0023] Figure 2 This is a schematic diagram of the magnetic suction shaft frame structure of this utility model;
[0024] Figure 3 This is a schematic diagram of the guide frame structure of this utility model;
[0025] Figure 4 This is a schematic diagram of the rotating wheel structure of this utility model;
[0026] Figure 5 This is a schematic diagram of the magnet block structure of this utility model;
[0027] Figure 6 This is a schematic diagram of the threaded column structure of this utility model;
[0028] Figure 7 This is a schematic diagram of the rotating shaft structure of this utility model.
[0029] In the diagram: 1. Bag making machine body; 2. Magnetic suction shaft frame; 3. Guide frame; 4. Rotary wheel; 5. Magnet block; 6. Threaded column; 7. Rotary shaft; 8. Stepper motor; 31. Frame; 32. Fixed shaft; 41. Wheel body; 42. Snap ring; 51. Magnet block body; 52. Slide bar; 61. Threaded column body; 62. Retaining ring; 63. Rotary column; 64. Sleeve; 71. Shaft body; 72. Annular groove. Detailed Implementation
[0030] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments.
[0031] Reference Figure 1 ,2 3. A bag making machine, comprising a bag making machine body 1, a magnetic suction shaft frame 2 installed at the tail of the bag making machine body 1, a rotating shaft 7 mounted on the magnetic suction shaft frame 2, the magnetic suction shaft frame 2 including a guide frame 3, a rotating wheel 4, a magnet block 5, a stepper motor 8 and a threaded column 6, the guide frame 3 being fixedly connected to the bag making machine body 1, the stepper motor 8 being fixedly connected to the bag making machine body 1, the rotating wheel 4 being rotatably mounted on the upper part of the guide frame 3, the magnet block 5 being slidably mounted inside the guide frame 3, the threaded column 6 being rotatably mounted on the lower part of the guide frame 3, the threaded column 6 being threadedly mounted inside the magnet block 5, the magnet block 5 being magnetically attracted to the rotating shaft 7, the lower end of the threaded column 6 being fixedly connected to the rotor of the stepper motor 8, and the rotating shaft 7 being mounted on the rotating wheel 4.
[0032] Reference Figure 1 , 2 The guide frame 3 includes a frame body 31 and a fixed shaft 32, with the fixed shaft 32 fixedly connected to the upper part of the frame body 31; the frame body 31 is fixedly connected to the main body 1 of the bag making machine. The fixed shaft 32 guides the rotation of the turntable 4, and the frame body 31 guides the lifting and lowering of the magnet block 5.
[0033] Reference Figure 1 , 2 3 and 4, the rotating wheel 4 includes a wheel body 41 and a retaining ring 42. The retaining ring 42 is fixedly connected to the outside of the wheel body 41, and the wheel body 41 is rotatably mounted on the fixed shaft 32. The rotating wheel 4 is engaged with the rotating shaft 7 through the retaining ring 42. The wheel body 41 drives the retaining ring 42 to rotate, so that the retaining ring 42 acts on the rotating shaft 7.
[0034] Reference Figure 2 , 3 5. The magnet block 5 includes a magnet block body 51 and a slider 52. The slider 52 is symmetrically and fixedly connected to the side of the magnet block body 51. The slider 52 is slidably engaged within the frame 31, and the magnet block body 51 is in movable contact with the frame 31. The frame 31 guides the slider 52 to slide, and the slider 52 constrains the magnet block 51, keeping the magnet block 51 within the frame 31.
[0035] Reference Figure 2 , 3 Components 5 and 6, the threaded column 6 includes a threaded column body 61, a retaining ring 62, and a rotating column 63. The lower end of the threaded column body 61 is fixedly connected to the upper end of the rotating column 63. The retaining ring 62 is fixedly connected between the threaded column body 61 and the rotating column 63. The threaded column body 61 is threadedly installed inside the magnet block 51. The retaining ring 62 and the rotating column 63 are rotatably installed on the lower part of the frame 31. The lower end of the rotating column 63 is fixedly connected to the rotor of the stepper motor 8. The stepper motor 8 drives the rotating column 63 to rotate, which in turn drives the threaded column body 61 to rotate, causing the threaded column body 61 to move the magnet block 51 up and down.
[0036] Reference Figure 2 and6 The threaded column 6 also includes a sleeve 64, which is fixedly connected to the outside of the rotating column 63. When the stepper motor 8 is damaged, the sleeve 64 is manually turned to drive the rotating column 63 to rotate, which in turn drives the threaded column 61 to rotate.
[0037] Reference Figure 1 , 2 4, 5, and 7, the rotating shaft 7 includes a shaft body 71, with an annular groove 72 on the side of the shaft body 71. A snap-fit ring 42 is snapped into the annular groove 72, and the magnetic block 51 is magnetically attracted to the shaft body 71. The rotating wheel 4 guides the shaft body 71 to rotate, and the engagement of the wheel body 41 with the annular groove 72 increases the lateral stability of the rotating shaft 7.
[0038] Working principle: The rotating shaft 7 is passed through the target material roll and then placed on the rotating wheel 4. The rotating wheel 4 guides the rotating shaft 7 to rotate, so that the bag making machine body 1 can smoothly pick up the material. The magnetic block 5 acts downward on the rotating shaft 7 to stabilize the rotating shaft 7 on the rotating wheel 4. The stepper motor 8 drives the threaded column 6 to rotate. The threaded column 6 drives the magnetic block 5 to slide downward, so that the magnetic block 5 moves away from the rotating shaft 7, reducing the force of the magnetic block 5 on the rotating shaft 7 and adjusting the attraction.
[0039] The above description is only a preferred embodiment of the utility model, but the protection scope of the utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed by the utility model, based on the technical solution and the utility model concept, should be included within the protection scope of the utility model.
[0040] The description briefly mentions the application direction of the utility model in relation to existing technologies known to those skilled in the art without modification, and combines them with the utility model to form a complete technology; it avoids excessive popularization of technologies known to those skilled in the art, in order to help those skilled in the art quickly understand the main content of the utility model.
Claims
1. A bag-making machine, comprising a bag-making machine body (1), characterized in that: A magnetic suction shaft frame (2) is installed at the tail of the bag making machine body (1). A rotating shaft (7) is mounted on the magnetic suction shaft frame (2). The magnetic suction shaft frame (2) includes a guide frame (3), a rotating wheel (4), a magnet (5), a stepper motor (8), and a threaded column (6). The guide frame (3) is fixedly connected to the bag making machine body (1). The stepper motor (8) is fixedly connected to the bag making machine body (1). The rotating wheel (4) is rotatably mounted on the upper part of the guide frame (3). The magnet (5) is slidably mounted inside the guide frame (3). The threaded column (6) is rotatably mounted on the lower part of the guide frame (3). The threaded column (6) is threadedly mounted inside the magnet (5). The magnet (5) is magnetically attracted to the rotating shaft (7). The lower end of the threaded column (6) is fixedly connected to the rotor of the stepper motor (8). The rotating shaft (7) is mounted on the rotating wheel (4).
2. The bag-making machine according to claim 1, characterized in that: The guide frame (3) includes a frame (31) and a fixed shaft (32), the fixed shaft (32) being fixedly connected to the upper part of the frame (31); the frame (31) is fixedly connected to the main body (1) of the bag making machine.
3. A bag-making machine according to claim 2, characterized in that: The wheel (4) includes a wheel body (41) and a snap ring (42). The snap ring (42) is fixedly connected to the outside of the wheel body (41), and the wheel body (41) is rotatably mounted on a fixed shaft (32).
4. A bag-making machine according to claim 3, characterized in that: The magnet block (5) includes a magnet block body (51) and a slider (52). The slider (52) is symmetrically fixedly connected to the side of the magnet block body (51). The slider (52) is slidably locked inside the frame (31), and the magnet block body (51) is in active contact with the frame (31).
5. A bag-making machine according to claim 4, characterized in that: The threaded column (6) includes a threaded column body (61), a retaining ring (62), and a rotating column (63). The lower end of the threaded column body (61) is fixedly connected to the upper end of the rotating column (63). The retaining ring (62) is fixedly connected between the threaded column body (61) and the rotating column (63). The threaded column body (61) is threadedly installed inside the magnet block body (51). The retaining ring (62) and the rotating column (63) are rotatably installed on the lower part of the frame (31). The lower end of the rotating column (63) is fixedly connected to the rotor of the stepper motor (8).
6. A bag-making machine according to claim 5, characterized in that: The threaded post (6) also includes a sleeve (64), which is fixedly connected to the outside of the rotating post (63).
7. A bag-making machine according to claim 4, characterized in that: The rotating shaft (7) includes a shaft body (71), and an annular groove (72) is provided on the side of the shaft body (71). The snap ring (42) is snapped in the annular groove (72), and the magnet block (51) is magnetically attracted to the shaft body (71).