A traction mechanism for an upper traction rotary machine
By using an alternating rotating traction mechanism and a fan for cooling, the problem of uneven film thickness caused by the traction rotation mechanism on the blown film machine was solved, thus improving the uniformity of film thickness and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- RUIAN XINYE PACKAGING MACHINE CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-03
AI Technical Summary
The existing blown film machine's upper traction rotation mechanism results in uneven film thickness and a long rotation cycle, affecting product quality.
The staggered rotation traction mechanism is adopted, and the staggered rotation of the two traction mechanisms is achieved by connecting the two sets of traction mechanisms through the phase gear connection, which shortens the rotation cycle. Combined with the fan, the membrane is blown and cooled. The intermittent action is achieved by using incomplete gears, which reduces energy loss.
It improves the uniformity of film thickness, enhances the stability and reliability of the traction process, and improves product quality and production efficiency.
Smart Images
Figure CN224446853U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of blown film machine technology, specifically to a traction mechanism for an upper traction rotary machine. Background Technology
[0002] A blown film machine heats and melts plastic particles and then blows them into a thin bubble film. The cylindrical bubble film is cooled, folded, printed, sealed, and punched to form a packaging bag. Because the cylindrical bubble film extruded from the die of the blow molding machine has uneven thickness at each point, it produces thickness deviation. The upper rotating mechanism can ensure that the thickness of the film roll after winding is uniform, thus improving the winding quality.
[0003] CN213802177U discloses a traction rotation structure for a large blown film machine, including a herringbone plate. An electric adjustment device is installed in the middle of the herringbone plate, and a motor for adjusting the herringbone plate is mounted on the electric adjustment device. A herringbone plate gantry is fixedly mounted on the electric adjustment device, and a fixing ring is fixedly connected to the upper end of the herringbone plate gantry. A rotary motor is mounted on the fixing ring, and an mounting plate is mounted on the inner wall of the fixing ring via a rotary bearing. The rotary motor drives the mounting plate to rotate. A traction frame is fixedly mounted on the upper end of the mounting plate, and three traction rollers are installed between the traction frames. This traction rotation mechanism can only reciprocate around the axis of rotation 360°, resulting in a long rotation cycle and uneven film thickness. Therefore, this technology still has room for improvement. Summary of the Invention
[0004] The technical problem to be solved by this utility model is to provide a traction mechanism for an upper traction rotary machine, which addresses the shortcomings of the prior art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a traction mechanism for an upper traction rotary machine, comprising a pressure roller assembly, two sets of traction mechanisms at the upper end of the pressure roller assembly, the traction mechanism comprising a transmission assembly for driving the traction mechanism and a guide roller assembly, characterized in that: the transmission mechanism comprises a mounting frame disposed on the top of the pressure roller assembly, a mounting platform for mounting the traction mechanism is disposed in the middle of the mounting frame, the mounting frame is provided with a first rotating shaft, the first rotating shaft passes through the mounting frame and the mounting platform, the first rotating shaft is provided with first transmission gears on both sides of the mounting frame, the first rotating shaft is provided with second transmission gears at both ends of the first rotating shaft, the traction mechanism is fixedly installed between the first transmission gear and the second transmission gear, one end of the traction mechanism is fixedly connected to the second transmission gear, a second rotating shaft and a third rotating shaft are respectively disposed on one side of the first rotating shaft between the first transmission gear and the second transmission gear, both ends of the second rotating shaft and the third rotating shaft are provided with third transmission gears meshing with the first transmission gear and the third rotating shaft, the second rotating shaft and the third rotating shaft are connected by a phase gear meshing connection to cause the two sets of traction mechanisms to rotate alternately, and a first drive motor capable of driving the first transmission gear is disposed at the end of the first rotating shaft.
[0006] With the above technical solution, when the first drive motor drives the first transmission gear to rotate, the first transmission gear on the first shaft drives the third transmission gear to rotate, and the third transmission gear drives the second transmission gear on the second shaft to rotate. The second and third shafts are connected by a phase-changing gear. The third shaft rotates in the opposite direction through the phase-changing gear. The third transmission gears at both ends of the third shaft drive the first and second transmission gears that mesh with them to rotate. The traction mechanism set on the second transmission gear driven by the third shaft rotates in the opposite direction, so that the two sets of traction mechanisms can rotate alternately. Compared with the traditional traction rotation mechanism that can only rotate 360° back and forth and has a long cycle, the rotation cycle is greatly shortened, so that the film is subjected to a more uniform force during the traction process, avoiding the situation of uneven local force on the film due to the long rotation cycle, and improving product quality.
[0007] The traction mechanism of the above-mentioned upper traction rotary machine can be further configured as follows: the traction mechanism is set on a traction frame between the first transmission gear and the second transmission gear, a traction roller is rotatably connected to one side of the traction frame, a fan is fixedly installed on the side of the traction frame away from the traction roller, the fan is internally connected to the traction roller, and the surface of the traction roller is provided with several air holes.
[0008] Using the above technical solution, the traction frame provides a stable installation base for the traction roller and the fan. The traction roller is mounted on the traction frame and can rotate flexibly, which facilitates the traction operation of the film. During the film traction process, the fan sends air into the traction roller, and the air blows out from the air holes on the surface of the traction roller, which can blow and cool the film. The wind force can help the film better adhere to the traction roller, making the traction process more stable and reliable.
[0009] The traction mechanism of the above-mentioned upper traction rotary machine can be further configured as follows: the pressure roller assembly includes a pressure roller frame, the pressure roller frame is rotatably provided with a first pressure roller and a second pressure roller, the first pressure roller and the second pressure roller are arranged side by side, a die-passing gap is formed between the first pressure roller and the second pressure roller for the film to pass through, and the two ends of the second pressure roller are provided with pressure roller moving components for adjusting the die-passing gap.
[0010] The above technical solution involves a pressure roller frame equipped with a first pressure roller and a second pressure roller. The first and second pressure rollers, arranged side-by-side, form a through-die gap, providing a channel for the film to pass through and allowing for smooth pressure roller processing. The through-die gap can be flexibly adjusted via a pressure roller moving assembly. Different types and thicknesses of films require different through-die gaps during production. For thicker films, the through-die gap can be increased using the pressure roller moving assembly to prevent excessive compression and damage, thus ensuring the integrity and quality of the film.
[0011] The traction mechanism of the above-mentioned upper traction rotary machine can be further configured as follows: the pressure roller moving assembly includes a slider plate installed at the end of the second pressure roller and a moving cylinder connected to the slider plate, and the pressure roller frame is provided with sliding grooves on both sides of the slider plate that are slidably connected to the slider plate.
[0012] Using the above technical solution, the slider plate is installed at the end of the second pressure roller and connected to the moving cylinder. At the same time, the pressure roller frame is provided with sliding grooves on both sides of the slider plate. The moving cylinder provides power for the movement of the slider plate. Since the slider plate is connected to the end of the second pressure roller, the movement of the slider plate directly drives the movement of the second pressure roller, thereby realizing the adjustment of the die gap between the first pressure roller and the second pressure roller.
[0013] The traction mechanism of the above-mentioned upper traction rotary machine can be further configured as follows: the guide roller assembly includes a herringbone frame disposed on one side of the mounting platform and a fixed frame disposed on one side of the pressure roller frame, and the ends of the herringbone frame and the fixed frame are provided with a first guide roller and a second guide roller, and a guide groove for guiding the film is formed between the first guide roller and the second guide roller.
[0014] Using the above technical solution, the A-frame and the fixed frame are respectively located on one side of the mounting platform and one side of the pressure roller frame. The first guide roller and the second guide roller are set at the ends of the A-frame and the fixed frame. The guide groove formed between them can accurately guide the direction of the film and keep the film stable during the transportation process.
[0015] The traction mechanism of the above-mentioned upper traction rotary machine can be further configured as follows: the pressure roller frame is provided with roller taking grooves at both ends of the first pressure roller, and the pressure roller frame is provided with limiting grooves at both ends of the second pressure roller to limit the adjustment direction and adjustment distance of the second pressure roller.
[0016] With the above technical solution, the roller picking groove is set at both ends of the roller press frame where the first roller is located, which facilitates the picking and placing of the first roller. The limiting groove is set at both ends of the roller press frame where the second roller is located, which ensures that the second roller always moves along the preset accurate direction when it is adjusted by the roller moving assembly, thus avoiding the second roller from deviating during the adjustment process.
[0017] The traction mechanism of the above-mentioned upper traction rotary machine can be further configured such that: the first transmission gear is a spur gear, the second transmission gear is an incomplete gear, and bearings are provided between the first transmission gear, the second transmission gear and the first rotating shaft, and between the second rotating shaft and the third transmission gear and the phase-changing gear.
[0018] Using the above technical solution, the first transmission gear is a spherical gear, which can ensure stable speed and torque transmission, while the second transmission gear is an incomplete gear. The incomplete gear can realize periodic movement and rest, which can meet the needs of the equipment for intermittent operation in specific production links. When the first drive motor rotates to the end of the incomplete gear, the motor reverses. Bearings are set between the first transmission gear, the second transmission gear and the first rotating shaft, as well as between the second rotating shaft and the third transmission gear and the phase-changing gear, to reduce energy loss and improve transmission efficiency.
[0019] The beneficial effects of this utility model are as follows: the first drive motor drives the first transmission gear, and then transmits the power to the second transmission gear through the first rotating shaft. The third transmission gear on the second and third rotating shafts meshes with the first and second transmission gears, and the second and third rotating shafts are connected by a phase-changing gear meshing, which realizes the staggered rotation of the two sets of traction mechanisms, greatly shortens the rotation cycle, and improves production efficiency. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of this utility model;
[0021] Figure 2 This is a structural diagram of the transmission component of this utility model;
[0022] Figure 3This is a structural diagram of the pressure roller assembly of this utility model;
[0023] Figure 4 This is a structural diagram of the pressure roller moving assembly of this utility model;
[0024] Label annotations: 1-Pressure roller assembly, 2-Traction mechanism, 3-Transmission assembly, 4-Guide roller assembly, 5-Mounting frame, 6-Mounting platform, 7-First rotating shaft, 8-First transmission gear, 9-Second transmission gear, 10-Second rotating shaft, 11-Third rotating shaft, 12-Third transmission gear, 13-Transformation gear, 14-First drive motor, 15-Traction frame, 16-Traction roller, 17-Fan, 18-Air hole, 19-Pressure roller frame, 20-First pressure roller, 21-Second pressure roller, 22-Die gap, 23-Pressure roller moving assembly, 24-Sliding plate, 25-Moving cylinder, 26-Groove, 27-A-frame, 28-Fixed frame, 29-First guide roller, 30-Second guide roller, 31-Guide groove, 32-Roller removal groove, 33-Limiting groove, 34-Bearing. Detailed Implementation
[0025] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
[0026] like Figure 1-4The present invention provides the following technical solution: a traction mechanism 2 for an upper traction rotary machine, including a pressure roller assembly 1, two sets of traction mechanisms 2 at the upper end of the pressure roller assembly, a transmission assembly 3 for driving the traction mechanism 2 and a guide roller assembly 4, the transmission mechanism including a mounting frame 5 at the top of the pressure roller assembly 1, a mounting platform 6 for mounting the traction mechanism 15 in the middle of the mounting frame 5, a first rotating shaft 7 passing through the mounting frame 5 and the mounting platform 6, first transmission gears 8 on both sides of the first rotating shaft 7, and second transmission gears 9 at both ends of the first rotating shaft 7 on the mounting platform 6, the traction mechanism 2 being fixedly installed between the first transmission gears 8 and the second transmission gears 9, one end of the traction mechanism 2 being connected to the second transmission gears 8 and 9. Gear 9 is fixedly connected. A second rotating shaft 10 and a third rotating shaft 11 are respectively provided on one side of the first rotating shaft 7 between the first transmission gear 8 and the second transmission gear 9. Both ends of the second rotating shaft 10 and the third rotating shaft 11 are provided with third transmission gears 12 that mesh with the first transmission gear 8 and the second transmission gear 9. The second rotating shaft 10 and the third rotating shaft 11 are connected by a phase-shifting gear 13, causing the two sets of traction mechanisms 2 to rotate alternately. A first drive motor 14 is provided at the end of the first rotating shaft, capable of driving the first transmission gear 8. When the first drive motor 14 drives the first transmission gear 8 to rotate, the first transmission gear 8 on the first rotating shaft 7 drives the third transmission gear 12 to rotate, and the third transmission gear 12 drives the second transmission gear 9 on the second rotating shaft 10 to rotate. The second rotating shaft 10 and the third rotating shaft 11 are connected by a phase-changing gear 13. The third rotating shaft 11 rotates in the opposite direction through the phase-changing gear 13. The third transmission gear 12 at both ends of the third rotating shaft 11 drives the first transmission gear 8 and the second transmission gear 9, which mesh with it, to rotate. The traction mechanism 2, which is set on the second transmission gear 9 driven by the third rotating shaft 11, rotates in the opposite direction, causing the two sets of traction mechanisms 2 to rotate alternately. Compared with the traditional traction rotation mechanism that can only rotate 360° and has a long cycle, the rotation cycle is greatly shortened, so that the film is subjected to a more uniform force during the traction process. This avoids the situation of uneven local force on the film caused by the long rotation cycle, thus improving product quality. The traction mechanism 2 is set on the first transmission gear 8 and the second transmission gear 9 driven by the third rotating shaft 11. A traction frame 15 is positioned between the moving gears 9. A traction roller 16 is rotatably connected to one side of the traction frame 15. A fan 17 is fixedly installed on the side of the traction frame 15 away from the traction roller 16. The fan 17 is internally connected to the traction roller 16. The surface of the traction roller 16 has several air holes 18. The traction frame 15 provides a stable mounting base for the traction roller 16 and the fan 17. The traction roller 16, mounted on the traction frame 15, can rotate flexibly, facilitating the traction operation of the film. During the film traction process, the fan 17 supplies air into the traction roller 16, and the air is blown out from the air holes 18 on the surface of the traction roller 16, which can blow and cool the film. The air force can help the film better adhere to the traction roller 16, making the traction process more stable and reliable. The first transmission gear 8 is a spur gear.The second transmission gear 9 is an incomplete gear. Bearings 34 are provided between the first transmission gear 8, the second transmission gear 9 and the first rotating shaft 7, and between the second rotating shaft 10 and the third transmission gear 12 and the transformation gear 13. The first transmission gear 8 is a spur gear, which can ensure stable speed and torque transmission. The second transmission gear 9 is an incomplete gear, which can realize periodic movement and pause, and can meet the needs of intermittent operation in specific production links. When the first drive motor 14 rotates to the end of the incomplete gear, the motor reverses. The bearings 34 provided between the first transmission gear 8, the second transmission gear 9 and the first rotating shaft 7, and between the second rotating shaft 10 and the third transmission gear 12 and the transformation gear 13, reduce energy loss and improve transmission efficiency.
[0027] like Figure 1-4The present invention provides the following technical solution: a traction mechanism 2 for an upper traction rotary machine, a pressure roller assembly 1 including a pressure roller frame 19, a first pressure roller 20 and a second pressure roller 21 rotatably mounted on the pressure roller frame 19, the first pressure roller 20 and the second pressure roller 21 arranged side by side, forming a die-passing gap 22 between the first pressure roller 20 and the second pressure roller 21 for the film to pass through, and pressure roller moving components 23 for adjusting the die-passing gap at both ends of the second pressure roller 21. The pressure roller frame 19 is provided with the first pressure roller 20 and the second pressure roller 21, and the die-passing gap 22 formed by the side-by-side arrangement of the first pressure roller 20 and the second pressure roller 21 provides a channel for the film to pass through, so that the film can be smoothly processed by the pressure roller. The die-passing gap 22 can be flexibly adjusted by the pressure roller moving components 23. In production, the requirements for the die-passing gap 22 are different for different types and thicknesses of film. For thicker films, the die-cutting gap 22 can be increased by using the pressure roller moving assembly 23 to prevent the film from being damaged by excessive pressure, thus ensuring the integrity and quality of the film. The pressure roller moving assembly 23 includes a slider plate 24 installed at the end of the second pressure roller 21 and a moving cylinder 25 connected to the slider plate 24. The pressure roller frame 19 has sliding grooves 26 on both sides of the slider plate 24 that are slidably connected to the slider plate 24. The slider plate 24 is installed at the end of the second pressure roller 21 and connected to the moving cylinder 25. At the same time, the pressure roller frame 19 has grooves 26 on both sides of the slider plate 24 that are slidably connected to the slider plate 24. Slide grooves 26 are provided on both sides of the slider plate 24. The moving cylinder 25 provides power for the movement of the slider plate 24. Since the slider plate 24 is connected to the end of the second pressure roller 21, the movement of the slider plate 24 directly drives the movement of the second pressure roller 21, thereby realizing the adjustment of the die gap 22 between the first pressure roller 20 and the second pressure roller 21. The guide roller assembly 4 includes a herringbone frame 27 set on one side of the mounting platform 6 and a fixed frame 28 set on one side of the pressure roller frame 19. The ends of the herringbone frame 27 and the fixed frame 28 are both provided with first guide rollers. 29. A second guide roller 30 is formed between the first guide roller 29 and the second guide roller 30 to guide the film. The herringbone frame 27 and the fixed frame 28 are respectively located on one side of the mounting platform 6 and the side of the pressure roller frame 19. The first guide roller 29 and the second guide roller 30 are set at the ends of the herringbone frame 27 and the fixed frame 28, and the guide groove 31 formed between them can accurately guide the direction of the film and keep the film stable during the conveying process. The pressure roller frame 19 is provided with pick-up points at both ends of the first pressure roller 20. The roller groove 32 and the roller frame 19 are provided with limiting grooves 33 at both ends of the second roller 21 to limit the adjustment direction and adjustment distance of the second roller 21. The roller take-up groove 32 is provided at both ends of the roller frame 19 at the first roller 20 to facilitate the take-up and put-down of the first roller 20. The limiting grooves 33 are provided at both ends of the roller frame 19 at the second roller 21 to ensure that the second roller 21 always moves along the preset accurate direction when adjusted by the roller moving assembly 23, and to avoid the second roller 21 from deviating during the adjustment process.
[0028] The beneficial effects of this invention are as follows: An ultrasonic device is installed at the bottom of the distillation cup 2. Ultrasonic waves have the characteristics of cavitation effect, which cause the liquid to vibrate and stir violently without mechanical contact with the liquid. This effectively reduces the interference with the liquid elements and greatly ensures the purity of the extracted organic phase.
Claims
1. A traction mechanism for an upper traction rotary machine, comprising a pressure roller assembly, wherein two sets of traction mechanisms are provided at the upper end of the pressure roller assembly, and the traction mechanism is provided with a transmission assembly for driving the traction mechanism and a guide roller assembly, characterized in that: The transmission mechanism includes a mounting frame disposed on the top of the pressure roller assembly. The mounting frame has a mounting platform in the middle for mounting the traction mechanism. The mounting frame has a first rotating shaft that passes through the mounting frame and the mounting platform. The first rotating shaft has first transmission gears at both ends of the mounting frame and second transmission gears on both sides of the mounting platform. The traction mechanism is fixedly installed between the first and second transmission gears. One end of the traction mechanism is fixedly connected to the second transmission gear. A second rotating shaft and a third rotating shaft are respectively disposed on one side of the first rotating shaft between the first and second transmission gears. Both ends of the second and third rotating shafts are provided with third transmission gears that mesh with the first and second transmission gears. The second and third rotating shafts are connected by a phase-shifting gear meshing connection to cause the two sets of traction mechanisms to rotate alternately. The end of the first rotating shaft is provided with a first drive motor capable of driving the first transmission gear.
2. A traction mechanism for a traction drive rotary machine according to claim 1, wherein: The traction mechanism is located on a traction frame between the first transmission gear and the second transmission gear. A traction roller is rotatably connected to one side of the traction frame. A fan is fixedly installed on the side of the traction frame away from the traction roller. The fan is internally connected to the traction roller. Several air holes are provided on the surface of the traction roller.
3. A traction mechanism for a traction drive rotary machine according to claim 1, wherein: The pressure roller assembly includes a pressure roller frame, on which a first pressure roller and a second pressure roller are rotatably mounted. The first and second pressure rollers are arranged side by side, and a die-passing gap is formed between the first and second pressure rollers to allow the film to pass through. The two ends of the second pressure roller are provided with pressure roller moving components for adjusting the die-passing gap.
4. A traction mechanism for a traction drive rotary machine according to claim 3, wherein: The pressure roller moving assembly includes a slider plate installed at the end of the second pressure roller and a moving cylinder connected to the slider plate. The pressure roller frame is provided with sliding grooves on both sides of the slider plate that are slidably connected to the slider plate.
5. A traction mechanism for a traction drive rotary machine according to claim 3, wherein: The guide roller assembly includes a herringbone frame disposed on one side of the mounting platform and a fixed frame disposed on one side of the pressure roller frame. The ends of the herringbone frame and the fixed frame are provided with a first guide roller and a second guide roller, and a guide groove for guiding the film is formed between the first guide roller and the second guide roller.
6. A traction mechanism for a traction drive rotary machine according to claim 5, wherein: The pressure roller frame is provided with roller taking grooves at both ends of the first pressure roller, and the pressure roller frame is provided with limiting grooves at both ends of the second pressure roller to limit the adjustment direction and adjustment distance of the second pressure roller.
7. A traction mechanism for a traction drive rotary machine according to claim 2, wherein: The first transmission gear is a spur gear, the second transmission gear is an incomplete gear, and bearings are provided between the first transmission gear, the second transmission gear and the first rotating shaft, and between the second rotating shaft and the third transmission gear and the phase-changing gear.