一种聚乙烯薄膜张紧拉伸装置
By designing a polyethylene film tensioning and stretching device, the tension force of the film can be flexibly adjusted by using components such as L-shaped frame, friction wheel and spring. This solves the problem of fixed tension adjustment range of existing devices, improves the convenience of operation and production efficiency, and adapts to the processing of small and medium batches of multi-variety films.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU YUEJIA NEW MATERIALS CO LTD
- Filing Date
- 2025-09-15
- Publication Date
- 2026-07-17
AI Technical Summary
The existing equipment has a fixed tension adjustment range, which makes it difficult to adapt to the processing of films of different specifications. This results in cumbersome operation, time and labor consumption, and increased equipment costs, making it difficult to adapt to the production mode of small and medium batches and multiple varieties.
A polyethylene film tensioning and stretching device was designed. Through the synergistic action of components such as L-shaped frame, friction wheel, spring and threaded rod, the film tension force can be flexibly adjusted and stably controlled. The multi-roller synergistic guiding structure and detachable connection method improve the convenience and safety of operation.
It enables precise adjustment of film tension, avoids film loosening or breakage, improves production efficiency and product qualification rate, and adapts to the processing needs of various types of films.
Smart Images
Figure CN224512815U_ABST
Abstract
Claims
1. A polyethylene film tension-stretching device comprising a base plate (1), a support plate (2), an unwinding roller (3) and a winding roller (4), characterized in that: An L-shaped frame (10) is inserted into a vertical groove (9) on the surface of the support plate (2). A conveying roller (8) is rotatably connected to the top of the L-shaped frame (10). A U-shaped block (18) is fixedly connected to the upper surface of the support plate (2). A friction wheel (20) is provided inside the U-shaped block (18). A top block (22) is fixedly connected to the upper surface of the support plate (2). A pressing rod (24) is inserted into a horizontal groove inside the top block (22). An L-shaped plate (27) is fixedly connected to one end of the pressing rod (24). A vertical plate (25) is fitted onto the surface of the L-shaped plate (27). A spring (26) is fixedly connected between the L-shaped plate (27) and the vertical plate (25). A threaded rod (23) is inserted into a threaded hole on the surface of the top block (22).
2. The polyethylene film tension-stretching apparatus according to claim 1, wherein: The surface of the support plate (2) is rotatably connected to conveyor roller three (7), conveyor roller two (6) and conveyor roller one (5). The conveyor roller three (7) and conveyor roller two (6) are at the same height, and the conveyor roller four (8) is located below the conveyor roller three (7) and conveyor roller two (6). The conveyor roller four (8) and L-shaped frame (10) are rotatably connected.
3. The polyethylene film tensioning and stretching apparatus according to claim 1, wherein: The L-shaped plate (27) and the vertical plate (25) are slidably connected, the threaded rod (23) and the top block (22) are threadedly connected, and one end of the threaded rod (23) is rotatably connected to the vertical plate (25) through a bearing.
4. The polyethylene film tensioning and stretching apparatus according to claim 1, wherein: The end of the extrusion rod (24) away from the L-shaped plate (27) has an arc-shaped groove, and the end of the extrusion rod (24) with the arc-shaped groove is in contact with the friction wheel (20).
5. The polyethylene film tensioning and stretching apparatus according to claim 1, wherein: The friction wheel (20) has a fixedly inserted shaft (19) inside. The two ends of the shaft (19) pass through the U-shaped block (18) respectively. The shaft (19) and the U-shaped block (18) are rotatably connected. One end of the shaft (19) is fixedly connected to a square rod (21). The unwinding drum (3) has a groove that matches the square rod (21) inside. The unwinding drum (3) is sleeved on the surface of the square rod (21).
6. The polyethylene film tensioning and stretching apparatus according to claim 1, wherein: A positioning plate (13) is fixedly connected to the upper surface of the base plate (1). The positioning plate (13) is inserted into a groove opened on the surface of the L-shaped frame (10). The positioning plate (13) and the L-shaped frame (10) are slidably connected. Multiple counterweights (14) are sleeved on the surface of the positioning plate (13). The counterweights (14) are located above the L-shaped frame (10).
7. The polyethylene film tensioning and stretching apparatus according to claim 1, wherein: The L-shaped frame (10) is fixedly connected to two sides with side strips (11), which are inserted into the side grooves (12) opened inside the support plate (2). The L-shaped frame (10) and the support plate (2) are fixedly connected.
8. The polyethylene film tensioning and stretching apparatus according to claim 1, wherein: A rectangular block (16) is fixedly connected to one side of the support plate (2), and a motor (15) is installed on one side of the rectangular block (16). A square rod (17) is fixedly connected to the end of the output shaft of the motor (15). A sliding groove (2) matching the square rod (17) is opened inside the winding drum (4), and the winding drum (4) is sleeved on the surface of the square rod (17).