A chain-link bag slitting device

Abstract

This utility model relates to the field of zipper bag technology, and more particularly to a zipper bag slitting device. This utility model provides a zipper bag slitting device including a support frame, a first motor, an unwinding roller, a separating roller, a rewinding roller, a second motor, and a drive shaft. The first motor is fixedly mounted on the upper left side of the support frame, and its output shaft is fixedly connected to the unwinding roller. The separating roller is rotatably connected to the middle of the support frame. Rewinding rollers are rotatably connected to the upper right and lower right sides of the front of the support frame. The second motor is fixedly mounted on the rear side of the support frame, and its output shaft is fixedly connected to the drive shaft. This utility model utilizes a design where a synchronous pulley at the front end of the drive shaft drives a transmission gear via a transmission belt, which meshes with the driven gears at the front ends of the two rewinding rollers. This allows the second motor to simultaneously drive the upper and lower rewinding rollers to rotate in opposite directions while driving the slitting process, achieving automatic and synchronous winding and collection of the slitting material, significantly improving winding efficiency.

Description

Technical Field

[0001] This utility model relates to the field of zipper bag technology, and in particular to a zipper bag cutting device. Background Technology

[0002] In the production and processing of zipper bags, the semi-finished zipper bags after continuous extrusion molding are usually in the form of a cylindrical or wide flat film. They need to undergo a slitting process to form individual zipper bag units of a predetermined width and then be rolled up for subsequent packaging. In existing technology, conventional slitting equipment mostly uses fixed circular or straight blades for simple cutting, which has several obvious limitations in practical applications: there is a lack of active tension control of the film material during the slitting process, and the film material is prone to shaking or drifting at the slitting station, causing deviations in the slitting position. Especially for bags with symmetrical zipper structures, if the slitting center line does not coincide with the zipper centerline, it will lead to misalignment of the finished bag opening. In addition, the strip-shaped bags after slitting are usually dropped directly or piled up disorderly, requiring additional manual intervention for sorting and rolling, resulting in low production efficiency and easy scratches or contamination of the film surface. Furthermore, existing equipment is often difficult to adapt to the need for rapid switching between different width specifications of zipper bags, and its width adjustment mechanism is complex.

[0003] Therefore, there is an urgent need for a zipper bag cutting device. Utility Model Content

[0004] To overcome the shortcomings of lacking efficient winding function, this utility model provides a zipper bag slitting device.

[0005] The technical solution of this utility model is as follows: a zipper bag slitting device, including a bracket, a first motor, an unwinding roller, a separating roller, a rewinding roller, a second motor, a transmission shaft, and cutting discs. The first motor is fixedly installed on the upper left side of the bracket, and the output shaft of the first motor is fixedly connected to the unwinding roller. The separating roller is rotatably connected to the middle of the bracket. The rewinding rollers are rotatably connected to the upper right and lower right sides of the front of the bracket. The second motor is fixedly installed on the rear side of the bracket, and the output shaft of the second motor is fixedly connected to the transmission shaft. Multiple cutting discs are slidably connected on the transmission shaft. The front end of the transmission shaft extends out of the front side of the bracket and is provided with a synchronous pulley.

[0006] Preferably, a cleaning roller is also included, which is rotatably connected to the lower left side of the support and is located below the unwinding roller.

[0007] Preferably, it also includes retaining beads and springs. The drive shaft has a groove with several positioning holes. Each cutting disc has a spring, and each spring has a retaining bead fixedly connected to its bottom. Each retaining bead is engaged in the corresponding positioning hole.

[0008] Preferably, it also includes a transmission belt, a transmission gear, and a driven gear. The front ends of the two take-up rollers extend out of the front side of the bracket, and the front ends of the take-up rollers are fixedly connected to the driven gears. The transmission gear is rotatably connected to the bracket at the position between the two driven gears. A synchronous pulley is provided at the center of the front shaft of the transmission gear. A transmission belt is wound between the two synchronous pulleys. Both driven gears mesh with the transmission gear.

[0009] Preferably, it also includes a tension roller, which is rotatably connected to the lower left side of the support, and the tension roller is located to the right of the unwinding roller.

[0010] Preferably, the take-up roller is a composite material coated roller.

[0011] The present invention has the following advantages: 1. The present invention uses a design in which the synchronous pulley at the front end of the transmission shaft drives the transmission gear via the transmission belt and meshes with the driven gear at the front end of the two take-up rollers. This design enables the motor to drive the upper and lower take-up rollers to rotate in opposite directions simultaneously while driving the slitting, thereby achieving automatic and synchronous winding and collection of the material after slitting, and significantly improving the winding efficiency.

[0012] 2. This utility model, through the groove and positioning hole on the transmission shaft, combined with the spring-driven ball retaining structure inside the cutting disc, allows the operator to quickly position and fix the cutting disc simply by moving the cutting disc when adjusting the cutting width, thus effectively avoiding the slippage and insufficient precision of the cutting position in traditional devices.

[0013] 3. This utility model uses a cleaning roller located below the unwinding roller and a tensioning roller that guides the roll material to clean the surface of the roll material during the unwinding process and maintain stable conveying tension, thereby reducing damage to the cutting disc from impurities, ensuring a smooth slitting process and product quality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the first three-dimensional structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention.

[0016] Figure 3 This is a three-dimensional structural diagram of the groove, cutting disc, and positioning hole components of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the cutting disc, retaining beads, and spring components of this utility model.

[0018] In the above attached diagram: 1: bracket, 2: motor one, 21: unwinding roller, 3: cleaning roller, 4: tensioning roller, 5: material distribution roller, 6: winding roller, 7: motor two, 8: drive shaft, 9: groove, 10: cutting disc, 11: positioning hole, 12: retaining ball, 13: spring, 14: drive belt, 15: drive gear, 16: driven gear. Detailed Implementation

[0019] Example: A zipper bag cutting device, such as Figures 1-4 As shown, the device includes a bracket 1, a first motor 2, an unwinding roller 21, a separating roller 5, a take-up roller 6, a second motor 7, a drive shaft 8, and cutting discs 10. The first motor 2 is fixedly installed on the upper left side of the bracket 1, with its output shaft facing rearward. The output shaft of the first motor 2 is fixedly connected to the unwinding roller 21. The separating roller 5 is rotatably connected to the middle of the bracket 1. The take-up roller 6 is rotatably connected to the upper right and lower right sides of the front of the bracket 1. The take-up roller 6 is made of composite material coated roller to increase friction and prevent slippage. The second motor 7 is fixedly installed on the rear side of the bracket 1, with its output shaft facing forward. The output shaft of the second motor 7 is fixedly connected to the drive shaft 8. Multiple cutting discs 10 are slidably connected to the drive shaft 8. The front end of the drive shaft 8 extends out of the front side of the bracket 1 and is equipped with a synchronous pulley.

[0020] like Figure 2 As shown, it also includes a cleaning roller 3. The cleaning roller 3 is rotatably connected to the lower left side of the bracket 1. The cleaning roller 3 is located below the unwinding roller 21 and is used to clean impurities on the zipper bag.

[0021] like Figures 3-4 As shown, it also includes a retaining bead 12 and a spring 13. A groove 9 is provided on the drive shaft 8, and several positioning holes 11 are provided in the groove 9. A spring 13 is provided in each of the cutting discs 10. A retaining bead 12 is fixedly connected to the bottom of each spring 13. The retaining bead 12 is inserted into the corresponding positioning hole 11 to adjust the position of the cutting disc.

[0022] like Figure 1 As shown, it also includes a transmission belt 14, a transmission gear 15, and a driven gear 16. The front ends of the two take-up rollers 6 extend out of the front side of the bracket 1, and the front ends of the take-up rollers 6 are fixedly connected to the driven gears 16. The transmission gear 15 is rotatably connected to the bracket 1 at the position between the two driven gears 16. A synchronous pulley is provided at the center of the front shaft of the transmission gear 15. The transmission belt 14 is wound between the two synchronous pulleys. The two driven gears 16 are meshed with the transmission gear 15.

[0023] like Figure 2 As shown, it also includes a tension roller 4. The lower left side of the bracket 1 is rotatably connected to the tension roller 4 for maintaining tension stability, and the tension roller 4 is located to the right of the unwinding roller 21.

[0024] When the operator uses this device to cut the zipper bag, firstly, the zipper bag roll is placed on the unwinding roller 21. Then, motor 2 is started. The output shaft of motor 2 drives the unwinding roller 21 to rotate and release the roll. The operator passes the roll through the gap between the cleaning roller 3 and the support 1 and guides it between the tensioning roller 4 and the drive shaft 8. After the surface is cleaned by the cleaning roller 3, the tensioning roller 4 maintains stable tension. Then, motor 7 is started. Motor 7 drives the drive shaft 8 to rotate, which drives the cutting disc 10 to cut the continuously conveyed roll. The cut zipper bag is then wound by the operator to the upper and lower layers according to the needs. At the same time, the synchronous pulley at the front end of the drive shaft 8 drives the transmission gear 15 to rotate through the transmission belt 14. This gear meshes with the driven gear 16 at the front end of the two take-up rollers 6, so that the take-up rollers 6 rotate synchronously to achieve rapid collection after cutting. After cutting is completed, motor 2 and motor 7 can be turned off. In addition, when the cutting width needs to be adjusted, the cutting disc 10 is moved outward with a little force. The retaining bead 12 is pressed out of the current positioning hole 11 and compresses the spring 13, allowing it to slide in the groove 9. After the cutting disc 10 is moved to the target position, under the push of the spring 13, the retaining bead 12 will be inserted into the positioning hole 11 at that location, thereby fixing the cutting disc 10 in the desired position.

Claims

1. A zipper bag cutting device, characterized in that, It includes a bracket (1), a motor (2), an unwinding roller (21), a distribution roller (5), a take-up roller (6), a second motor (7), a drive shaft (8), and a cutting disc (10). The first motor (2) is installed on the upper left side of the bracket (1). The output shaft of the first motor (2) is connected to the unwinding roller (21). The distribution roller (5) is rotatably connected to the middle of the bracket (1). The take-up roller (6) is rotatably connected to the upper right and lower right sides of the front of the bracket (1). The second motor (7) is installed on the rear side of the bracket (1). The output shaft of the second motor (7) is connected to the drive shaft (8). Multiple cutting discs (10) are slidably connected on the drive shaft (8). The front end of the drive shaft (8) extends out of the front side of the bracket (1) and is equipped with a synchronous wheel.

2. The zipper bag cutting device according to claim 1, characterized in that, It also includes a cleaning roller (3), which is rotatably connected to the lower left side of the bracket (1). The cleaning roller (3) is located below the unwinding roller (21).

3. The zipper bag cutting device according to claim 2, characterized in that, It also includes a retaining ball (12) and a spring (13). A groove (9) is provided on the drive shaft (8), and several positioning holes (11) are provided in the groove (9). A spring (13) is provided in the cutting disc (10), and a retaining ball (12) is connected to the bottom of the spring (13). The retaining ball (12) is inserted into the corresponding positioning hole (11).

4. The zipper bag cutting device according to claim 3, characterized in that, It also includes a transmission belt (14), a transmission gear (15) and a driven gear (16). The front ends of the two take-up rollers (6) extend out of the front side of the bracket (1), and the front ends of the take-up rollers (6) are connected to the driven gears (16). The transmission gear (15) is rotatably connected to the bracket (1) between the two driven gears (16). A synchronous pulley is provided at the center of the front side of the transmission gear (15), and the transmission belt (14) is wound between the two synchronous pulleys. The two driven gears (16) mesh with the transmission gear (15).

5. A zipper bag cutting device according to claim 4, characterized in that, It also includes a tension roller (4), which is rotatably connected to the lower left side of the bracket (1), and the tension roller (4) is located to the right of the unwinding roller (21).

6. A zipper bag cutting device according to claim 5, characterized in that, The take-up roller (6) is a composite material coated roller.

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