A synchronous tension regulating device of a single machine two-head film blowing unit

Abstract

The utility model discloses a kind of single machine two head blow film unit's synchronous tension adjusting device, including workbench, the side of workbench is provided with tension synchronous adjusting mechanism, the tension synchronous adjusting mechanism includes auxiliary roller, the bottom of workbench is fixedly connected with driving motor, the output of driving motor is fixedly connected with screw rod, the surface of screw rod is threadedly connected with threaded sleeve.This single machine two head blow film unit's synchronous tension adjusting device, by setting tension synchronous adjusting mechanism, by PLC controller setting tension value, tension sensor is started in working process, when the tension value detected by two tension sensors is different, it will make that adjusting frame occurs rotation, and then make that the tension value detected by tension sensor is lower than set value, signal will be transmitted to PLC controller, to start driving motor, so that connecting frame drives tension roller to move, to adjust tension value, while playing the role of synchronous regulation, tension value can be monitored in real time.

Description

Technical Field

[0001] This utility model relates to the field of blown film machine technology, specifically to a synchronous tension adjustment device for a single-machine double-head blown film unit. Background Technology

[0002] In the field of plastic film production, blown film units are the core equipment that melts and plasticizes plastic raw materials, blows them through a die, and then cools, pulls, and winds them to form film products. Traditional single-head blown film units (i.e., a single extruder with a single die and a single traction and winding system) are widely used in small and medium-scale film production scenarios due to their simple structure and low cost.

[0003] According to patent document CN218196923U, a blown film machine with a winding and flattening function is disclosed, including a base frame, a screw installed in the base frame, a sliding plate b threadedly connected to the screw, a positioning frame b rotatably connected to the sliding plate b, a sliding plate a threadedly connected to the right side of the screw, and a motor a mounted on the surface of the sliding plate a.

[0004] However, the tension control method of traditional single-head blown film units has significant limitations: the winding tension of a single-head unit mainly relies on the passive balance of the mechanical structure, which cannot detect changes in film tension in real time, let alone actively adjust it according to production needs. When the melting state of the raw material fluctuates, the traction speed changes slightly, or the film thickness is uneven, the winding tension is prone to change, causing the film to stretch and deform, the winding to become loose, or the edges to wrinkle, which seriously affects the product quality. Moreover, it is only designed for a single film path and does not need to consider the tension coordination between multiple paths, so it cannot adjust the film tension synchronously and cannot meet the usage requirements. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a synchronous tension adjustment device for a single-unit double-head blown film machine, so as to achieve synchronous tension adjustment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a synchronous tension adjustment device for a single-unit double-head blown film machine, comprising a worktable, a tension synchronous adjustment mechanism provided on one side of the worktable, the tension synchronous adjustment mechanism including an auxiliary roller, a drive motor fixedly connected to the bottom of the worktable, a lead screw fixedly connected to the output end of the drive motor, a threaded sleeve threadedly connected to the surface of the lead screw, an adjustment frame movably connected to one side of the threaded sleeve, a connecting pin movably connected to one side of the adjustment frame, a horizontal plate fixedly connected to one side of the connecting pin, a tension sensor fixedly connected to the bottom of the horizontal plate, a connecting frame fixedly connected to the bottom of the tension sensor, and one side of the connecting frame movably connected to the tension roller via a first bearing.

[0007] Preferably, a blown film mechanism is provided on the other side of the worktable. The blown film mechanism includes an extruder. The bottom of the extruder is fixedly connected to the worktable. A blown film head is connected to the right side of the extruder through a guide pipe. A squeeze roller is provided on the top of the blown film head. A guide roller is provided on the right side of the squeeze roller. A support base is fixedly connected to the central shaft on the top right side of the worktable. A dual-axis motor is fixedly connected to the top of the support base. A take-up roller is threadedly connected to the output end of the dual-axis motor.

[0008] Preferably, both the front and back sides of the auxiliary roller are movably connected to a fixed seat via a second bearing, and the bottom of the fixed seat is fixedly connected to the worktable.

[0009] Preferably, the front and back sides of the extrusion roller and the guide roller are movably connected to a support frame via a third bearing, and the bottom of the support frame is fixedly connected to the worktable.

[0010] Preferably, a slide rod is slidably connected to the rear side of the inner cavity of the threaded sleeve, and the bottom of the slide rod is fixedly connected to the worktable.

[0011] Preferably, the front and back of the connecting frame are fixedly connected to a sliding sleeve, and the inner cavity of the sliding sleeve is slidably connected to a vertical rod, and the bottom of the vertical rod is fixedly connected to the worktable.

[0012] Preferably, a PLC controller is fixedly connected to the front of the workbench, support legs are fixedly connected to the four corners of the bottom of the workbench, and a movable shaft is movably connected to the right side of the threaded sleeve through a fourth bearing, with one side of the movable shaft fixedly connected to the adjustment frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting a tension synchronization adjustment mechanism and setting the tension value through a PLC controller, the tension sensor is activated during operation. When the tension values ​​detected by the two tension sensors are different, the adjustment frame will rotate, causing the tension value detected by the tension sensor to be lower than the set value. This will transmit a signal to the PLC controller, thereby activating the drive motor. The drive motor drives the lead screw to rotate, the lead screw drives the threaded sleeve to move, the threaded sleeve drives the adjustment frame to move, the adjustment frame drives the connecting pin to move, the connecting pin drives the horizontal plate to move, the horizontal plate drives the tension sensor to move, the tension sensor drives the connecting frame to move, and the connecting frame drives the tension roller to move, thereby adjusting the tension value. This achieves synchronous adjustment while allowing real-time monitoring of the tension value.

[0014] 2. By setting up a blown film mechanism, during operation, the material is poured into the extruder, and then the extruder is started to work. The molten material is conveyed to two blown film heads respectively. After being squeezed by the extrusion rollers, it is guided by the guide rollers. At the same time, the dual-axis motor is started by the PLC controller, which drives the winding roller to rotate, so that the film can be wound up. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention from a first-view perspective. Figure 2 This is a three-dimensional structural diagram of the present invention from a second perspective. Figure 3 This is a three-dimensional structural diagram of the present invention from a third-view perspective. Figure 4 This is a partial three-dimensional structural diagram of the present invention.

[0016] In the diagram: 1. Workbench; 2. Tension synchronization adjustment mechanism; 201. Auxiliary roller; 202. Fixed base; 203. Drive motor; 204. Lead screw; 205. Threaded sleeve; 206. Adjustment frame; 207. Connecting pin; 208. Horizontal plate; 209. Tension sensor; 210. Connecting frame; 211. Tension roller; 3. Film blowing mechanism; 301. Extruder; 302. Film blowing head; 303. Support frame; 304. Extrusion roller; 305. Guide roller; 306. Dual-axis motor; 307. Rewinding roller; 4. PLC controller. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4This utility model provides a technical solution: a synchronous tension adjustment device for a single-machine double-end blown film unit, including a worktable 1, a tension synchronous adjustment mechanism 2 provided on one side of the worktable 1, the tension synchronous adjustment mechanism 2 including an auxiliary roller 201, a drive motor 203 fixedly connected to the bottom of the worktable 1, a lead screw 204 fixedly connected to the output end of the drive motor 203, a threaded sleeve 205 threadedly connected to the surface of the lead screw 204, an adjustment frame 206 movably connected to one side of the threaded sleeve 205, a connecting pin 207 movably connected to one side of the adjustment frame 206, a horizontal plate 208 fixedly connected to one side of the connecting pin 207, a tension sensor 209 fixedly connected to the bottom of the horizontal plate 208, and a tension sensor 209 fixedly connected to the bottom of the tension sensor 209. A connecting frame 210 is fixedly connected, and one side of the connecting frame 210 is movably connected to the tension roller 211 via a first bearing. A tension synchronization adjustment mechanism 2 is set, and the tension value is set via a PLC controller 4. During operation, the tension sensor 209 is activated. When the tension values ​​detected by the two tension sensors 209 differ, the adjusting frame 206 rotates, causing the tension value detected by the tension sensor 209 to fall below the set value. This sends a signal to the PLC controller 4, activating the drive motor 203. The drive motor 203 drives the lead screw 204 to rotate, which in turn moves the threaded sleeve 205. The threaded sleeve 205 moves the adjusting frame 206, which in turn moves the connecting pin 207. Pin 207 drives the horizontal plate 208 to move, the horizontal plate 208 drives the tension sensor 209 to move, the tension sensor 209 drives the connecting frame 210 to move, and the connecting frame 210 drives the tension roller 211 to move, thereby adjusting the tension value. This provides synchronous adjustment while allowing real-time monitoring of the tension value. The front and back of the auxiliary roller 201 are movably connected to fixed seats 202 via second bearings. The bottom of the fixed seats 202 is fixedly connected to the worktable 1. By setting the fixed seats 202 and the second bearings, the operation of the auxiliary roller 201 is stabilized, and the auxiliary roller 201 is limited. A sliding rod is slidably connected to the rear side of the inner cavity of the threaded sleeve 205, and the bottom of the sliding rod is fixedly connected to the worktable 1. By setting the sliding rod, the threaded sleeve 205 is stabilized. The threaded sleeve 205 is balanced and supported during operation. Sliding sleeves are fixedly connected to both the front and back of the connecting frame 210, and vertical rods are slidably connected to the inner cavity of the sliding sleeves. The bottom of the vertical rods is fixedly connected to the worktable 1. By setting the sliding sleeves and vertical rods, the operation of the connecting frame 210 is stabilized and guided. A PLC controller 4 is fixedly connected to the front of the worktable 1, and support legs are fixedly connected to the four corners of the bottom of the worktable 1. A movable shaft is movably connected to the right side of the threaded sleeve 205 via a fourth bearing, and one side of the movable shaft is fixedly connected to the adjusting frame 206. By setting the fourth bearing and the movable shaft, the adjusting frame 206 can be adjusted around the movable shaft as the center, thus facilitating tension adjustment.

[0019] Please see Figure 1 , Figure 2 and Figure 3 On the other side of the workbench 1, a blown film mechanism 3 is provided. The blown film mechanism 3 includes an extruder 301. The bottom of the extruder 301 is fixedly connected to the workbench 1. The right side of the extruder 301 is connected to a blown film head 302 through a guide pipe. The top of the blown film head 302 is provided with a compression roller 304. The right side of the compression roller 304 is provided with a guide roller 305. A support base is fixedly connected to the central shaft on the top right side of the workbench 1, and a dual-axis motor 306 is fixedly connected to the top of the support base. The output end of the dual-axis motor 306 is threadedly connected to a take-up roller 307. By setting up the blown film mechanism 3, during operation, the material is poured into the extruder 301. Then, the extruder 301 is started to transport the molten material to the two blown film heads 302. After being extruded by the extrusion roller 304, it is guided by the guide roller 305. At the same time, the dual-axis motor 306 is started by the PLC controller 4. The dual-axis motor 306 drives the winding roller 307 to rotate, so as to wind up the film. The front and back sides of the extrusion roller 304 and the guide roller 305 are movably connected to the support frame 303 through the third bearing. The bottom of the support frame 303 is fixedly connected to the worktable 1. By setting the third bearing and the support frame 303, the operation of the extrusion roller 304 and the guide roller 305 is stabilized.

[0020] Working principle: By setting the tension synchronization adjustment mechanism 2 and the tension value set by the PLC controller 4, the tension sensor 209 is activated during operation. When the tension values ​​detected by the two tension sensors 209 are different, the adjustment frame 206 will rotate, causing the tension value detected by the tension sensor 209 to be lower than the set value. This will transmit a signal to the PLC controller 4, thereby activating the drive motor 203. The drive motor 203 drives the lead screw 204 to rotate, the lead screw 204 drives the threaded sleeve 205 to move, the threaded sleeve 205 drives the adjustment frame 206 to move, the adjustment frame 206 drives the connecting pin 207 to move, the connecting pin 207 drives the horizontal plate 208 to move, the horizontal plate 208 drives the tension sensor 209 to move, the tension sensor 209 drives the connecting frame 210 to move, and the connecting frame 210 drives the tension roller 211 to move, thereby adjusting the tension value. This achieves synchronous adjustment while allowing real-time monitoring of the tension value. By setting up the blown film mechanism 3, during operation, the material is poured into the extruder 301, and then the extruder 301 is started to work, conveying the molten material to the two blown film heads 302 respectively. After being squeezed by the extrusion roller 304, it is then guided by the guide roller 305. At the same time, the dual-axis motor 306 is started by the PLC controller 4, which drives the winding roller 307 to rotate, thereby winding up the film.

[0021] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A synchronous tension adjustment device for a single-unit double-end blown film machine, characterized in that: The device includes a worktable (1), a tension synchronization adjustment mechanism (2) is provided on one side of the worktable (1), the tension synchronization adjustment mechanism (2) includes an auxiliary roller (201), a drive motor (203) is fixedly connected to the bottom of the worktable (1), a lead screw (204) is fixedly connected to the output end of the drive motor (203), a threaded sleeve (205) is threadedly connected to the surface of the lead screw (204), an adjustment frame (206) is movably connected to one side of the threaded sleeve (205), a connecting pin (207) is movably connected to one side of the adjustment frame (206), a horizontal plate (208) is fixedly connected to one side of the connecting pin (207), a tension sensor (209) is fixedly connected to the bottom of the horizontal plate (208), a connecting frame (210) is fixedly connected to the bottom of the tension sensor (209), and one side of the connecting frame (210) is movably connected to the tension roller (211) through a first bearing.

2. The synchronous tension adjustment device for a single-unit double-end blown film machine according to claim 1, characterized in that: A blown film mechanism (3) is provided on the other side of the workbench (1). The blown film mechanism (3) includes an extruder (301). The bottom of the extruder (301) is fixedly connected to the workbench (1). A blown film head (302) is connected to the right side of the extruder (301) through a guide pipe. A squeeze roller (304) is provided on the top of the blown film head (302). A guide roller (305) is provided on the right side of the squeeze roller (304). A support base is fixedly connected to the central shaft on the top right side of the workbench (1). A dual-axis motor (306) is fixedly connected to the top of the support base. A take-up roller (307) is threadedly connected to the output end of the dual-axis motor (306).

3. The synchronous tension adjustment device for a single-unit double-end blown film machine according to claim 1, characterized in that: The front and back sides of the auxiliary roller (201) are movably connected to a fixed seat (202) via a second bearing, and the bottom of the fixed seat (202) is fixedly connected to the worktable (1).

4. The synchronous tension adjustment device for a single-unit double-end blown film machine according to claim 2, characterized in that: The front and back sides of the extrusion roller (304) and guide roller (305) are movably connected to a support frame (303) via a third bearing, and the bottom of the support frame (303) is fixedly connected to the worktable (1).

5. The synchronous tension adjustment device for a single-unit double-end blown film machine according to claim 1, characterized in that: The threaded sleeve (205) has a sliding rod slidably connected to the rear side of its inner cavity, and the bottom of the sliding rod is fixedly connected to the worktable (1).

6. The synchronous tension adjustment device for a single-unit double-end blown film machine according to claim 1, characterized in that: The front and back of the connecting frame (210) are fixedly connected to a sliding sleeve, and the inner cavity of the sliding sleeve is slidably connected to a vertical rod, and the bottom of the vertical rod is fixedly connected to the worktable (1).

7. The synchronous tension adjustment device for a single-unit double-end blown film machine according to claim 1, characterized in that: The front of the workbench (1) is fixedly connected to a PLC controller (4), and the four corners of the bottom of the workbench (1) are fixedly connected to support legs. The right side of the threaded sleeve (205) is movably connected to a movable shaft through a fourth bearing, and one side of the movable shaft is fixedly connected to an adjustment frame (206).

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