A take-up mechanism for a film blowing machine
By introducing adjustment and auxiliary devices into the film blowing machine, the problems of inconvenient belt tension and fourth shaft height adjustment have been solved, thereby improving the stability and quality of film production and ensuring the stability of power transmission and the efficiency of the traction process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGSHU HONGJU NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-05-29
Smart Images
Figure CN224296576U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of blown film machine technology, and in particular to a traction mechanism for a blown film machine. Background Technology
[0002] A blown film machine heats and melts plastic particles and then blows them into a thin film. There are many types of blown film machines, including those for PE, POF, PVC, etc. Using brand-new particles results in new material with uniform color and clean appearance, and the bags stretch well.
[0003] Chinese patent application CN202120884652.1 discloses a traction mechanism for a blown film machine. The key technical points of the solution are: by setting a micro fan in the inner cavity of the main roller of the existing blown film machine traction mechanism, the micro fan can achieve the functions of ventilation, heat dissipation, dust removal and adjustment of internal airflow direction; and the connecting roller can determine its own limit height according to production needs, which can be flexibly adjusted to improve the production efficiency of the blown film machine. The traction roller surface is equipped with a limit ring and anti-slip strip, so that the material is not easy to shift or slip, which increases the convenience of enterprise production. The overall structure is simple, the cost is low, and it can quickly improve the production efficiency of enterprises.
[0004] Regarding the aforementioned and existing related technologies, the inventors believe that the following drawbacks often exist: the belt drive system in this solution uses a fixed installation, making it impossible to adjust the belt tension according to usage requirements. When the belt becomes loose after long-term use, it leads to unstable power transmission, making it difficult to accurately control the film traction speed and tension, thus affecting the film thickness uniformity and surface quality. Furthermore, adjusting the height of the fourth shaft requires adjustment through four limit holes, limiting the adjustment range and making the adjustment process cumbersome, requiring frequent disassembly and reassembly of components. Therefore, to address the above problems, a traction mechanism for a film blowing machine is proposed. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as fixed installation of belt drive systems that cannot be adjusted for tension, which can easily lead to unstable power transmission after long-term use and difficulty in controlling film traction speed and tension, thus affecting film thickness uniformity and surface quality; at the same time, the height of the fourth shaft can only be adjusted through four limit holes, which is limited in range, cumbersome to disassemble and assemble, and inefficient. Therefore, this invention proposes a traction mechanism for a film blowing machine.
[0006] To achieve the above objectives, this utility model adopts the following technical solution: a traction mechanism for a film blowing machine, comprising a housing body and a first rotating shaft, a second rotating shaft, a third rotating shaft, and a fourth rotating shaft disposed within the housing body. A pulley is mounted on one end of the second rotating shaft, and a belt body is fixedly connected to the surface of the pulley. A motor is fixedly connected to the surface of the belt body. A base is fixedly connected to one side of the housing body, and the motor is fixedly connected to the upper surface of the base. A traction roller is mounted on the arc surface of the fourth rotating shaft. An adjustment device is provided on one side of the housing body, the adjustment device including… A sliding groove is formed on one side of the box body. A sliding rod is fixedly connected to the sliding groove. A slider is slidably connected to the arc surface of the sliding rod. A round shaft is fixedly connected to one side of the slider. The round shaft is slidably connected to the surface of the belt. A fixing plate is fixedly connected to the surface of the slider. Several round holes are formed on one side of the box body. A round rod is fixedly connected to the side of the fixing plate away from the box body. An arc plate is slidably connected to the arc surface of the round rod. An insert rod is slidably inserted into the fixing plate. One end of the insert rod is fixedly connected to the arc plate. The insert rod is slidably connected to the inner wall of the round hole.
[0007] The effect achieved by the above-mentioned components is as follows: by setting up an adjustment device, the tension of the belt body can be adjusted. By using the cooperation of components such as slide groove, slide rod, slider, and round shaft, the tension of the belt body can be flexibly adjusted. Appropriate belt tension can ensure stable power transmission during belt drive, reduce slippage, and avoid problems such as reduced transmission efficiency and increased component wear caused by the belt being too loose or too tight. In this way, the stability and reliability of the film traction process are improved, ensuring the high efficiency and quality of film production.
[0008] Preferably, a circular block is fixedly connected to the end of the circular rod away from the fixed plate, and the size of the insertion rod is adapted to the size of the circular hole.
[0009] The effects achieved by the above components are as follows: the round block can prevent the operator from pulling the arc plate with excessive force, which would cause the arc plate to slip off the round rod, thus ensuring the stability of the adjustment; the size of the insert rod is matched with that of the round hole, so that the insert rod can be accurately inserted into the round hole.
[0010] Preferably, a spring is fitted onto the arc surface of the round rod, and the two ends of the spring are fixedly connected to the round block and the arc plate, respectively.
[0011] The effect achieved by the above components is that when the insertion rod is aligned with the round hole, the spring force will drive the insertion rod to automatically insert into the inner wall of the round hole, thus improving the convenience of the device.
[0012] Preferably, a threaded rod is fixedly connected to the side of the fixing plate away from the box body, and an arc-shaped stop is threadedly connected to the arc surface of the threaded rod.
[0013] The effect achieved by the above components is that the arc-shaped stop block restricts the movement trajectory of the arc plate, preventing the spring force from causing the round block to move forward continuously during the adjustment process, which in turn causes the plug rod to collide and rub against one side of the box body, thus extending the service life of the components.
[0014] Preferably, a circular ring pad, which is made of silicone rubber, is fixedly connected to the arc surface of the circular shaft.
[0015] The effects achieved by the above components are as follows: the silicone rubber ring pad is soft and elastic, which can effectively buffer the rigid friction generated when the round shaft contacts the belt body, reduce belt wear, and extend the belt service life; at the same time, the silicone rubber surface has high friction, which can increase the contact stability between the round shaft and the belt and prevent the belt from slipping.
[0016] Preferably, an auxiliary device is provided on one side of the box body. The auxiliary device includes a first square hole, which is opened on one side of the box body. A long rod is fixedly connected to the inner wall of the first square hole. A first circular block is slidably connected to the arc surface of the long rod. A second square hole is opened on the other side of the box body. A screw is rotatably connected to the second square hole. A second circular block is threadedly connected to the arc surface of the screw. The two ends of the fourth rotating shaft are fixedly connected to the first circular block and the second circular block, respectively. A sliding hole is opened on the side of the box body away from the long rod. A drive shaft is rotatably connected to the inner wall of the sliding hole. One end of the screw is fixedly connected to the drive shaft.
[0017] The effects achieved by the above components are as follows: by setting up auxiliary devices, the height of the fourth rotating shaft can be flexibly adjusted; the sliding cooperation between the long rod and the first ring block provides stable support and guidance for the fourth rotating shaft; the threaded connection between the screw and the second ring block, in conjunction with the rotation of the drive shaft, can precisely adjust the position of the fourth rotating shaft, and the height of the traction roller can be flexibly adjusted according to the needs of film production.
[0018] Preferably, the arc surface of the drive shaft is provided with a plurality of strip grooves, and the plurality of strip grooves are arranged in a circumferential array.
[0019] The effect achieved by the above components is that the strip groove can effectively increase the friction on the surface of the drive shaft, prevent slippage when the operator rotates, and make the rotation adjustment operation more precise and stable.
[0020] In summary, the beneficial effects of this utility model are as follows:
[0021] 1. In this utility model, by setting an adjustment device, the tension of the belt body can be adjusted. By using the cooperation of components such as slide groove, slide rod, slider, and round shaft, the tension of the belt body can be flexibly adjusted. Appropriate belt tension can ensure stable power transmission during belt drive, reduce slippage, and avoid problems such as reduced transmission efficiency and increased wear of components caused by the belt being too loose or too tight. This improves the stability and reliability of the film traction process and ensures the high efficiency and quality of film production.
[0022] 2. In this utility model, by setting an auxiliary device, the height of the fourth rotating shaft can be flexibly adjusted. The sliding cooperation between the long rod and the first ring block provides stable support and guidance for the fourth rotating shaft. The threaded connection between the screw and the second ring block, in conjunction with the rotation of the transmission shaft, can accurately adjust the position of the fourth rotating shaft. The height of the traction roller can be flexibly adjusted according to the needs of film production. Attached Figure Description
[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0024] Figure 2 This is a schematic diagram of the adjusting device in this utility model;
[0025] Figure 3 In this utility model Figure 2 Enlarged view of point A;
[0026] Figure 4 This is a schematic diagram of the auxiliary device in this utility model;
[0027] Figure 5 In this utility model Figure 4 Enlarged view of point B.
[0028] Legend: 1. Box body; 2. Third rotating shaft; 3. Adjustment device; 301. Slide groove; 302. Slide rod; 303. Slider; 304. Round shaft; 305. Fixing plate; 306. Round hole; 307. Round rod; 308. Arc plate; 309. Insert rod; 310. Round block; 311. Circular ring pad; 312. Spring; 313. Threaded rod; 314. Arc-shaped stop block; 4. Auxiliary device; 41. First square hole; 42. Long rod; 43. First circular ring block; 44. Second square hole; 45. Screw; 46. Second circular ring block; 47. Drive shaft; 48. Strip groove; 5. First rotating shaft; 6. Pulley; 7. Base; 8. Motor; 9. Belt body; 10. Fourth rotating shaft; 11. Traction roller; 12. Second rotating shaft. Detailed Implementation
[0029] Reference Figures 1-5As shown, this utility model provides a technical solution: a traction mechanism for a film blowing machine, including a housing body 1 and a first rotating shaft 5, a second rotating shaft 12, a third rotating shaft 2, and a fourth rotating shaft 10 disposed within the housing body. A pulley 6 is installed at one end of the second rotating shaft 12, and a belt body 9 is fixedly connected to the surface of the pulley 6. A motor 8 is fixedly connected to the surface of the belt body 9. A base 7 is fixedly connected to one side of the housing body 1, and the motor 8 is fixedly connected to the upper surface of the base 7. A traction roller 11 is installed on the arc surface of the fourth rotating shaft 10. An adjustment device 3 is provided on one side of the housing body 1. By setting the adjustment device 3, the tension of the belt body 9 can be adjusted. The mechanism can be flexibly adjusted by using components such as a slide groove 301, a slide rod 302, a slider 303, and a round shaft 304. Adjusting the tension of the belt body 9 ensures stable power transmission during belt drive, reduces slippage, and avoids problems such as reduced transmission efficiency and increased component wear caused by an overly loose or tight belt. This improves the stability and reliability of the film traction process, ensuring high efficiency and quality in film production. An auxiliary device 4 is provided on one side of the housing body 1. By setting the auxiliary device 4, the height of the fourth rotating shaft 10 can be flexibly adjusted. The sliding engagement between the long rod 42 and the first ring block 43 provides stable support and guidance for the fourth rotating shaft 10. The threaded connection between the screw 45 and the second ring block 46, combined with the rotation of the transmission shaft 47, allows for precise adjustment of the position of the fourth rotating shaft 10. The height of the traction roller 11 can be flexibly adjusted according to the needs of film production.
[0030] The specific settings and functions of its adjustment device 3 and auxiliary device 4 will be described in detail below.
[0031] Reference Figure 2 and Figure 3As shown in this embodiment: the adjusting device 3 includes a slide groove 301, which is opened on one side of the housing body 1. A slide rod 302 is fixedly connected to the slide groove 301. A slider 303 is slidably connected to the arc surface of the slide rod 302. A round shaft 304 is fixedly connected to one side of the slider 303. The round shaft 304 is slidably connected to the surface of the belt. A fixing plate 305 is fixedly connected to the surface of the slider 303. Several round holes 306 are opened on one side of the housing body 1. A round rod 307 is fixedly connected to the side of the fixing plate 305 away from the housing body 1. An arc plate is slidably connected to the arc surface of the round rod 307. 308. A rod 309 is slidably inserted into the fixed plate 305. One end of the rod 309 is fixedly connected to the arc-shaped plate 308, and the rod 309 is slidably connected to the inner wall of the round hole 306. A round block 310 is fixedly connected to the end of the round rod 307 away from the fixed plate 305. The size of the rod 309 is adapted to the size of the round hole 306. The round block 310 can prevent the operator from pulling the arc-shaped plate 308 with excessive force, which would cause the arc-shaped plate 308 to slip off the round rod 307, thus ensuring the stability of the adjustment. The size adaptation between the rod 309 and the round hole 306 allows the rod 309 to be accurately inserted into the round hole 306. A spring 312 is fitted onto the arc surface of the round rod 307. The two ends of the spring 312 are fixedly connected to the round block 310 and the arc plate 308, respectively. When the insertion rod 309 is aligned with the round hole 306, the elastic force of the spring 312 will cause the insertion rod 309 to automatically insert into the inner wall of the round hole 306, improving the convenience of the device. A threaded rod 313 is fixedly connected to the side of the fixing plate 305 away from the housing body 1. An arc-shaped stop 314 is threaded onto the arc surface of the threaded rod 313. The arc-shaped stop 314 restricts the movement trajectory of the arc plate 308, preventing the spring 310 from malfunctioning during adjustment. The elastic force of 12 causes the round block 310 to move forward continuously, which in turn causes the insertion rod 309 to collide and rub against one side of the housing body 1 continuously, extending the service life of the parts. The round shaft 304 is fixedly connected to the arc surface with a circular ring pad 311. The circular ring pad 311 is made of silicone rubber. The silicone rubber circular ring pad 311 is soft and elastic, which can effectively buffer the rigid friction generated when the round shaft 304 contacts the belt body 9, reduce belt wear, and extend the belt service life. At the same time, the surface friction of silicone rubber is high, which can increase the contact stability between the round shaft 304 and the belt and prevent the belt from slipping.
[0032] Reference Figure 4 and Figure 5As shown, specifically, the auxiliary device 4 includes a first square hole 41, which is located on one side of the housing body 1. A long rod 42 is fixedly connected to the inner wall of the first square hole 41, and a first circular ring block 43 is slidably connected to the arc surface of the long rod 42. A second square hole 44 is located on the other side of the housing body 1, and a screw 45 is rotatably connected inside the second square hole 44. A second circular ring block 46 is threadedly connected to the arc surface of the screw 45. The two ends of the fourth rotating shaft 10 are fixedly connected to the first circular ring block 43 and the second circular ring block 46, respectively. A sliding hole is located on the side of the housing body 1 away from the long rod 42, and a drive shaft 47 is rotatably connected to the inner wall of the sliding hole. One end of the screw 45 is fixedly connected to the drive shaft 47. A plurality of strip grooves 48 are provided on the arc surface of the drive shaft 47. The plurality of strip grooves 48 are arranged in a circumferential array. The strip grooves 48 can effectively increase the friction on the surface of the drive shaft 47, preventing slippage when the operator rotates, making the rotation adjustment operation more precise and stable.
[0033] Working principle: When the tension of the belt body 9 needs to be adjusted, the operator first pulls the arc plate 308. At this time, the arc plate 308 will slide along the round rod 307 away from the housing body 1, compressing the spring 312 sleeved on the round rod 307. At the same time, the insertion rod 309, which is fixedly connected to the arc plate 308, will be pulled out from the round hole 306 of the housing body 1, releasing the fixed state of the slider 303. Then, the arc baffle is rotated to block the arc plate 308, preventing it from rubbing forward against the side of the housing body 1. At this time, the slider 303 can slide freely on the arc surface of the slide rod 302, driving the round shaft 304 fixed on one side to move synchronously. The round shaft 304 contacts the surface of the belt body 9. By changing the squeezing position and pressure of the round shaft 304 on the belt body 9, the tension of the belt body 9 can be adjusted: when the slider 303 slides closer to the belt, the round shaft 304 applies greater tension to the belt, and the belt becomes tighter; conversely, when the slider 303 moves away from the belt, the tension of the belt body 9 decreases, and it becomes looser. After adjusting to the appropriate position, the operator can release the limit on the arc plate 308 by using the arc baffle. Subsequently, the compressed spring 312 generates a rebound force, pushing the arc plate 308 to slide along the round rod 307 towards the housing body 1, driving the insertion rod 309 to accurately insert into the corresponding round hole 306, fixing the position of the slider 303, completing the fixing of the belt tension, and thus completing the adjustment.
[0034] When the height of the fourth rotating shaft 10 needs to be adjusted, the operator applies force through the groove 48 on the surface of the drive shaft 47 to rotate the drive shaft 47, causing the screw 45 fixedly connected to it to rotate synchronously. Since the second ring block 46 is threadedly connected to the screw 45, and the first ring block 43 is slidably guided on the long rod 42, the rotation of the screw 45 pushes the second ring block 46 to move axially along the screw 45, thereby causing the first ring block 43 and the second ring block 46 at both ends of the fourth rotating shaft 10 to move synchronously. The long rod 42 provides sliding support for the first ring block 43, keeping the fourth rotating shaft 10 stable during movement, thus achieving precise adjustment of the height of the traction roller 11. The groove 48 increases the friction on the surface of the drive shaft 47, ensuring that the rotation operation does not slip, improving the stability and accuracy of the adjustment, and meeting the flexible needs of different film production processes for the height of the traction roller 11.
[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
Claims
1. A traction mechanism for a film blowing machine, comprising a housing body (1) and a first rotating shaft (5), a second rotating shaft (12), a third rotating shaft (2), and a fourth rotating shaft (10) disposed within the housing body, characterized in that: A pulley (6) is installed at one end of the second rotating shaft (12). A belt body (9) is fixedly connected to the surface of the pulley (6). A motor (8) is fixedly connected to the surface of the belt body (9). A base (7) is fixedly connected to one side of the housing body (1). The motor (8) is fixedly connected to the upper surface of the base (7). A traction roller (11) is installed on the arc surface of the fourth rotating shaft (10). An adjustment device (3) is provided on one side of the housing body (1). The adjustment device (3) includes a slide groove (301). The slide groove (301) is opened on one side of the housing body (1). A slide rod (302) is fixedly connected to the slide groove (301). The arc surface of the slide rod (302) is slidably connected to the slide rod (302). A slider (303) is provided, and a round shaft (304) is fixedly connected to one side of the slider (303). The round shaft (304) is slidably connected to the surface of the belt. A fixing plate (305) is fixedly connected to the surface of the slider (303). Several round holes (306) are provided on one side of the box body (1). A round rod (307) is fixedly connected to the side of the fixing plate (305) away from the box body (1). An arc plate (308) is slidably connected to the arc surface of the round rod (307). A plug rod (309) is slidably inserted into the fixing plate (305). One end of the plug rod (309) is fixedly connected to the arc plate (308). The plug rod (309) is slidably connected to the inner wall of the round hole (306).
2. The traction mechanism of a film blowing machine according to claim 1, characterized in that: A round block (310) is fixedly connected to one end of the round rod (307) away from the fixing plate (305), and the size of the insert rod (309) is adapted to the size of the round hole (306).
3. The traction mechanism of a film blowing machine according to claim 2, characterized in that: The circular rod (307) has a spring (312) fitted on its arc surface, and the two ends of the spring (312) are fixedly connected to the circular block (310) and the arc plate (308) respectively.
4. The traction mechanism of a film blowing machine according to claim 1, characterized in that: A threaded rod (313) is fixedly connected to the side of the fixed plate (305) away from the box body (1), and an arc-shaped stop (314) is threadedly connected to the arc surface of the threaded rod (313).
5. The traction mechanism of a film blowing machine according to claim 1, characterized in that: The circular arc surface of the circular shaft (304) is fixedly connected to a circular ring pad (311), which is made of silicone rubber.
6. The traction mechanism of a film blowing machine according to claim 1, characterized in that: An auxiliary device (4) is provided on one side of the box body (1). The auxiliary device (4) includes a first square hole (41). The first square hole (41) is opened on one side of the box body (1). A long rod (42) is fixedly connected to the inner wall of the first square hole (41). A first ring block (43) is slidably connected to the arc surface of the long rod (42). A second square hole (44) is opened on the other side of the box body (1). A screw (45) is rotatably connected in the second square hole (44). A second ring block (46) is threadedly connected to the arc surface of the screw (45). The two ends of the fourth rotating shaft (10) are fixedly connected to the first ring block (43) and the second ring block (46) respectively. A sliding hole is opened on the side of the box body (1) away from the long rod (42). A drive shaft (47) is rotatably connected to the inner wall of the sliding hole. One end of the screw (45) is fixedly connected to the drive shaft (47).
7. The traction mechanism of a film blowing machine according to claim 6, characterized in that: The drive shaft (47) has several strip grooves (48) on its arc surface, and the strip grooves (48) are arranged in a circular array.