Blown film machine guide roller lifting limiting device
Patent Information
- Application Number
- CN202522434113.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-17
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-11-17
AI Technical Summary
[0003]传统的限位装置采用固定限位块结构，安装后无法调节位置，仅能适配单一规格产品，更换薄膜规格时需整体拆装限位组件，操作繁琐且适应性差
[0018]与现有技术相比，本实用新型的有益效果是：该吹膜机导辊升降限位装置：
Smart Images
Figure CN224827688U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of blown film machine technology, specifically to a blown film machine guide roller lifting and limiting device. Background Technology
[0002] In the blown film production process, the height of the guide roller is used to control the size of the product. However, the height of the guide roller cannot be adjusted indefinitely, as too high or too low will damage the equipment.
[0003] Traditional limit devices use a fixed limit block structure, which cannot be adjusted after installation and can only be adapted to a single product specification. When changing the film specification, the limit component needs to be completely disassembled and reassembled, which is cumbersome and has poor adaptability. Utility Model Content
[0004] The purpose of this invention is to provide a lifting and limiting device for the guide roller of a blown film machine. This device is equipped with a height-adjustable sliding plate to adapt to the lifting and lowering of the guide rollers according to different needs, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a lifting and limiting device for the guide roller of a blown film machine, including a mounting side plate. The mounting side plate is connected to the blown film machine by bolts. A limiting unit structure is provided on the side surface of the mounting side plate. There are two mounting side plates. The two mounting side plates and the limiting unit structure on the surface respectively constitute the upper limit structure and the lower limit structure of the guide roller of the blown film machine.
[0006] Preferably, the limiting unit structure includes a base with a concave cross-section. A sliding plate is slidably mounted on the inner surface of the base. A height adjustment structure is provided below the sliding plate. The height adjustment structure adjusts the position of the sliding plate through an adjustment rod to adapt to different limiting requirements.
[0007] By adopting the above technical solution, the position of the sliding plate can be adjusted to meet different limit requirements through the height adjustment structure.
[0008] Preferably, the height adjustment structure includes an adjustment rod, which is a threaded rod structure. The adjustment rod is threaded through the lower surface of the base and is rotatably connected to the lower surface of the sliding plate. Two telescopic rods are symmetrically arranged on the lower surface of the sliding plate. The other end of each telescopic rod is fixedly connected to the bottom surface of the base. The two telescopic rods are symmetrically arranged about the adjustment rod as an axis.
[0009] Using the above technical solution, the position of the sliding plate can be adjusted by adjusting the adjusting rod.
[0010] Preferably, the upper surface of the sliding plate is provided with a secondary adjustment structure, which achieves fine adjustment of the limiting height by adjusting the limiting plate.
[0011] By adopting the above technical solution, the limit height can be finely adjusted again through the secondary adjustment structure.
[0012] Preferably, the secondary adjustment structure includes a vertical plate, which is fixedly installed on the upper surface of the sliding plate. A limit plate is provided on one side surface of the vertical plate. The limit plate is fixedly connected to one end of a connecting rod, and the other end of the connecting rod slides through the surface of the vertical plate. Four limit plates are arranged parallel to each other in the upper and lower parts.
[0013] By adopting the above technical solution, the limit height can be controlled by adjusting the limit plate.
[0014] Preferably, a limiting hole is provided through the surface of the limiting plate, and a limiting rod is inserted through the inner wall of the limiting hole. The limiting rod is a threaded rod structure and is threadedly installed on the side surface of the sliding plate.
[0015] Using the above technical solution, the limiting plate can be horizontally limited by the limiting hole and the limiting rod.
[0016] Preferably, a buffer plate is slidably mounted on the side surface of the base, the buffer plate is aligned with the limiting plate, and a buffer pad is fixedly mounted on the surface of the buffer plate.
[0017] By adopting the above technical solution, the buffer plate can prevent the guide roller from directly colliding with the limit plate during the lifting and lowering process.
[0018] Compared with the prior art, the beneficial effects of this utility model are: the guide roller lifting and limiting device of the blown film machine: 1. This device is connected to the blown film machine via mounting side plates. The two mounting side plates are upper and lower limit structures, which can limit the lifting and lowering of the guide rollers in both directions. The mounting side plates are equipped with bases. By rotating the adjusting rod, the sliding plate on the surface of the base can be raised and lowered to meet the limit height requirements in different production scenarios. 2. In this device, a secondary adjustment structure is set on the surface of the sliding plate. The limit height can be finely adjusted by four vertically parallel limit plates. The limit rod with threaded rod structure can limit a certain limit plate in the horizontal direction, thereby adapting to the lifting and limiting requirements of guide rollers of blown film machines of different specifications and increasing the adaptability of the device. 3. The buffer plate and buffer pad that are slidably installed on the side surface of the base in this device. The buffer plate separates the guide roller from the limit plate. When the guide roller rises and falls to the limit position, the buffer pad can prevent the guide roller from colliding directly with the limit plate, reduce component wear, and increase the service life of the device. Attached Figure Description
[0019] Figure 1This is a schematic diagram of the mounting structure of the side plate of this utility model; Figure 2 This is a schematic diagram of the base mounting structure of this utility model; Figure 3 This is a front view structural diagram of the present invention; Figure 4 This is a schematic diagram of the sliding plate installation structure of this utility model; Figure 5 This is a schematic diagram of the limiting plate structure of this utility model; Figure 6 This is a schematic diagram of the limiting hole structure of this utility model.
[0020] In the diagram: 1. Side plate; 2. Base; 3. Sliding plate; 4. Adjusting rod; 5. Telescopic rod; 6. Vertical plate; 7. Limiting plate; 8. Connecting rod; 9. Limiting hole; 10. Limiting rod; 11. Buffer plate; 12. Buffer pad. Detailed Implementation
[0021] 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.
[0022] Please see Figures 1-6 This utility model provides a technical solution: a lifting and limiting device for the guide roller of a blown film machine, including a mounting side plate 1, a base 2, a sliding plate 3, an adjusting rod 4, a telescopic rod 5, a vertical plate 6, a limiting plate 7, a connecting rod 8, a limiting hole 9, a limiting rod 10, a buffer plate 11, and a buffer pad 12.
[0023] The mounting side plate 1 is connected to the blown film machine by bolts. The side surface of the mounting side plate 1 is provided with a limit unit structure. There are two mounting side plates 1. The two mounting side plates 1 and the limit unit structure on the surface constitute the upper limit structure and lower limit structure of the guide roller of the blown film machine, respectively. The limit unit structure includes a base 2. The cross section of the base 2 is concave. A sliding plate 3 is slidably installed on the inner surface of the base 2. A height adjustment structure is provided below the sliding plate 3. The height adjustment structure realizes the position adjustment of the sliding plate 3 through the adjustment rod 4 to adapt to different limit requirements. The height adjustment structure includes an adjustment rod 4. The adjustment rod 4 is a threaded rod structure. The adjustment rod 4 is threaded through the lower surface of the base 2. The adjustment rod 4 is rotatably connected to the lower surface of the sliding plate 3. Two telescopic rods 5 are symmetrically arranged on the lower surface of the sliding plate 3. The other end of the telescopic rod 5 is fixedly connected to the bottom surface of the base 2. The two telescopic rods 5 are symmetrically arranged about the adjustment rod 4. like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, two mounting side plates 1 are connected to designated positions on the blown film machine by bolts. One mounting side plate 1 and its surface limiting unit structure constitute an upper limit structure, used to limit the highest position of the guide roller. The other mounting side plate 1 and its surface limiting unit structure constitute a lower limit structure, used to limit the lowest position of the guide roller. If the height of the limit needs to be adjusted, it can be initially adjusted by the height adjustment structure. Taking the upper limit structure as an example, rotating the adjusting rod 4 will push the sliding plate 3 to slide upward along the inner wall of the base 2 because the adjusting rod 4 is threaded through the lower surface of the base 2 and rotatably connected to the lower surface of the sliding plate 3. At the same time, the telescopic rod 5 extends synchronously, and the sliding plate 3 rises to the highest limit height required for the guide roller. Conversely, the adjusting rod 4 drives the sliding plate 3 to slide downward along the inner wall of the base 2, and the telescopic rod 5 retracts synchronously until the sliding plate 3 drops to the lowest height required for the guide roller.
[0024] The upper surface of the sliding plate 3 is provided with a secondary adjustment structure. The secondary adjustment structure achieves fine adjustment of the limit height by adjusting the limit plate 7. The secondary adjustment structure includes a vertical plate 6, which is fixedly installed on the upper surface of the sliding plate 3. A limit plate 7 is provided on one side surface of the vertical plate 6. The limit plate 7 is fixedly connected to one end of the connecting rod 8. The other end of the connecting rod 8 slides through the surface of the vertical plate 6. Four limit plates 7 are arranged parallel to each other vertically. Limit holes 9 are provided through the surface of the limit plates 7. Limit rods 10 are inserted through the inner wall of the limit holes 9. The limit rods 10 are threaded rods and are threadedly installed on the side surface of the sliding plate 3. A buffer plate 11 is slidably installed on the side surface of the base 2. The buffer plate 11 is aligned with the limit plate 7. A buffer pad 12 is fixedly installed on the surface of the buffer plate 11. When a secondary fine-tuning of the guide roller's limit height is required, the limit plate 7 can be adjusted. Select one of the four limit plates 7 as needed, push the limit plate 7 at the target height, causing it to slide along the surface of the vertical plate 6 towards the guide roller's lifting path via the connecting rod 8, until the limit plate 7 is positioned just enough to prevent the guide roller from rising beyond its limit. Then rotate the limit rod 10, passing it through the limit holes 9 on the surfaces of the remaining three limit plates 7, fixing the remaining limit plates 7 so they cannot slide horizontally, thus completing the adjustment. The fine adjustment of the limit height is similar to the secondary adjustment of the lower limit structure. When the lifting system of the blown film machine guide roller is activated, when the guide roller rises to the highest limit, it will first contact the buffer pad 12 on the surface of the buffer plate 11. The buffer plate 11 slides along the side surface of the base 2 and compresses the buffer pad 12 to absorb the impact force of the guide roller rising. Then the guide roller will be blocked by the limit plate 7 to achieve the upper limit. Similarly, when the guide roller falls to the lowest limit, it will be buffered by the buffer pad 12 and then blocked by the lower limit limit plate 7 to avoid direct collision between the guide roller and the limit plate 7 and reduce component wear.
[0025] Working principle: When using the guide roller lifting and limiting device of this blown film machine, the mounting side plate 1 is connected to the blown film machine by bolts. One mounting side plate 1 is the upper limit structure and the other mounting side plate 1 is the lower limit structure, realizing bidirectional limiting of the guide roller. Rotating the adjusting rod 4 can push the sliding plate 3 to slide along the inner wall of the base 2. The telescopic rod 5 extends and retracts synchronously to complete the initial adjustment of the limiting height. As needed, select one of the four parallel limiting plates 7, push the connecting rod 8 to slide along the vertical plate 6 to the target position, and then insert the limiting rod 10 into the limiting holes 9 of the other three limiting plates 7 and fix it to achieve fine adjustment of the limiting height. When the guide roller needs to be limited during the lifting process, it first contacts the buffer pad 12 on the buffer plate 11. The buffer plate 11 slides, and the buffer pad 12 is compressed to absorb the impact force. Then the guide roller is blocked by the limiting plate 7 to complete the limiting, which increases the overall practicality.
[0026] 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 guide roller lifting and limiting device for a blown film machine, comprising a mounting side plate (1), wherein the mounting side plate (1) is connected to the blown film machine by bolts, characterized in that: The side surface of the mounting side plate (1) is provided with a limiting unit structure. There are two mounting side plates (1). The two mounting side plates (1) and the limiting unit structure on the surface respectively constitute the upper limit structure and the lower limit structure of the blown film machine guide roller.
2. The blowing film machine guide roller lifting and limiting device according to claim 1, characterized in that: The limiting unit structure includes a base (2), the cross section of the base (2) is concave, a sliding plate (3) is slidably installed on the inner surface of the base (2), and a height adjustment structure is provided below the sliding plate (3). The height adjustment structure adjusts the position of the sliding plate (3) through the adjustment rod (4) to adapt to different limiting requirements.
3. The blowing film machine guide roller lifting and limiting device according to claim 2, characterized in that: The height adjustment structure includes an adjustment rod (4), which is a threaded rod structure. The adjustment rod (4) is threaded through the lower surface of the base (2). The adjustment rod (4) is rotatably connected to the lower surface of the sliding plate (3). Two telescopic rods (5) are symmetrically arranged on the lower surface of the sliding plate (3). The other end of the telescopic rod (5) is fixedly connected to the bottom surface of the base (2). The two telescopic rods (5) are symmetrically arranged about the adjustment rod (4).
4. The blowing film machine guide roller lifting and limiting device according to claim 2, characterized in that: The upper surface of the sliding plate (3) is provided with a secondary adjustment structure, which can finely adjust the limiting height by adjusting the limiting plate (7).
5. The blowing film machine guide roller lifting and limiting device according to claim 4, characterized in that: The secondary adjustment structure includes a vertical plate (6), which is fixedly installed on the upper surface of the sliding plate (3). A limiting plate (7) is provided on one side surface of the vertical plate (6). The limiting plate (7) is fixedly connected to one end of the connecting rod (8), and the other end of the connecting rod (8) slides through the surface of the vertical plate (6). There are four limiting plates (7) arranged in parallel vertically.
6. The blowing film machine guide roller lifting and limiting device according to claim 4, characterized in that: The surface of the limiting plate (7) is provided with a limiting hole (9), and a limiting rod (10) is inserted through the inner wall of the limiting hole (9). The limiting rod (10) is a threaded rod structure, and the limiting rod (10) is threadedly installed on the side surface of the sliding plate (3).
7. The blowing film machine guide roller lifting and limiting device according to claim 2, characterized in that: A buffer plate (11) is slidably installed on the side surface of the base (2). The buffer plate (11) is aligned with the limiting plate (7). A buffer pad (12) is fixedly installed on the surface of the buffer plate (11).