Tensioning device of film blowing machine
By designing an automatic adjustment tensioning device in the film blowing machine, using pressure sensors and adjustment devices, the problem that the tensioning mechanism cannot be automatically adjusted in the prior art is solved, and the winding quality and tensioning effect of the bubble film are improved.
Patent Information
- Application Number
- CN202421140591.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The tensioning mechanism of the existing film blowing machine cannot be automatically adjusted, resulting in uneven pulling or relaxation of the bubble film during the winding process, affecting the tensioning effect and winding quality.
A tensioning device including a frame, a first roller, a flattening device, a pressure sensor, a second roller, a third roller and a adjusting device are designed. The pressure change of the film is detected by the pressure sensor, and the adjustment device automatically adjusts the height of the third roller to ensure uniform tension of the film.
Automatic adjustment and tensioning of the bubble film is achieved, and the winding quality and tensioning effect of the film are improved, avoiding the problem of film pulling or relaxation caused by changes in linear speed.
Smart Images
Figure CN222612512U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of film blowing machines, in particular to a tensioning device of a film blowing machine. Background Art
[0002] In the prior art, bubble film is a product made of high-pressure polyethylene as the main raw material, with whitening agent, opening agent and other auxiliary materials added, and extruded and blister-formed into bubbles at a high temperature of about 230 degrees. It is a new type of plastic packaging material with light texture, good transparency, non-toxicity and tastelessness, which can play the role of moisture-proof, buffering and heat preservation for products. It is usually produced by a film blowing machine. During the production process, the bubble film needs to be rolled up. In order to improve the receipt rolling effect, the bubble film is usually tensioned before rolling up to ensure the rolling quality. In the prior art, the tensioning mechanism usually includes a frame, a tensioning roller rotatably arranged in the middle of the frame, and a guide roller rotatably arranged on both sides of the frame. The tensioning roller is arranged between the two guide rollers. After the bubble film passes from the top of one of the guide rollers, it passes under the tensioning roller and is then sent out from the top of the other guide roller, thereby tensioning the bubble film. However, as the bubble film is continuously rolled up, the linear speeds of the unwinding roller and the winding roller in the film blowing machine will change, and the existing tensioning mechanism cannot automatically make corresponding adjustments. The bubble film is affected by pulling or relaxing, resulting in poor tensioning effect of the bubble film, affecting the rolling effect of the bubble film. Utility Model Content
[0003] The embodiment of the present application provides a tensioning device for a film blowing machine, thereby solving the problem in the prior art that as the bubble film is continuously rolled up, the linear speeds of the unwinding roller and the winding roller in the film blowing machine will change, and the existing tensioning mechanism cannot automatically make corresponding adjustments, so the bubble film is affected by pulling or relaxing, resulting in poor tensioning effect of the bubble film, which affects the rolling effect of the bubble film.
[0004] The technical solution adopted in the embodiments of the present application is as follows.
[0005] A tensioning device for a film blowing machine comprises a frame, a first roller arranged on one side of the frame, a flattening device for pressing a film against the first roller for transmission, a pressure sensor arranged in the middle of the frame, a second roller rotatably connected to the pressure sensor, a third roller arranged on the frame and an adjusting device for adjusting the upper and lower heights of the third roller; the pressure sensor is electrically connected to the adjusting device; the flattening device is arranged on the frame and the active end of the flattening device corresponds to the first roller; the third roller is arranged at the active end of the adjusting device.
[0006] As a further improvement of the above technical solution: the flattening device includes a rotating member, a fourth roller arranged on the rotating member, a guide rod arranged on the frame, an elastic member that enables the fourth roller to always press the third roller, and a baffle arranged on the guide rod; the baffle is arranged on the guide rod; the elastic member is sleeved with the guide rod; one end of the elastic member is fixedly connected to the rotating member, and the other end of the elastic member is fixedly connected to the baffle; the fourth roller corresponds to the first roller; the elastic member pulls the rotating member to move in the direction of the baffle.
[0007] As a further improvement of the above technical solution: the adjusting device includes a support member, a slider sliding on the support member, a first rod driving the slider to move up and down, and a driving member driving the first rod to rotate; the driving member is arranged on the frame; a first groove is opened on the support member; the slider slides in the first groove; the first rod is rotatably connected in the first groove; the first rod is fixedly connected to the action end of the driving member.
[0008] As a further improvement of the above technical solution: a synchronous wheel and a belt are also arranged on the action end of the driving member; two groups of supporting members are arranged relatively to each other; and the driving member simultaneously controls the sliding blocks on both sides to move up and down synchronously.
[0009] As a further improvement of the above technical solution: the first rod is a threaded rod.
[0010] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
[0011] 1. As the frame is square and hollow inside, a first roller is arranged on one side of the frame, the first roller is rotatably connected to the frame, a rotating member is rotatably connected to the side of the frame facing the first roller, a fourth roller is rotatably connected to the rotating member, a guide rod is arranged on the frame, the guide rod is arc-shaped and has a circular cross-section, the guide rod is penetrated by the rotating member, a baffle is arranged on the guide rod, an elastic member is sleeved on the guide rod, one end of the elastic member is fixedly connected to the rotating member, the other end of the elastic member is fixedly connected to the baffle, two groups of rotating members are arranged relatively, the elastic member drives the fourth roller to press tightly on the first roller, thereby pressing the film flatly on the first roller to prevent wrinkles and have high transmission efficiency, a pressure sensor is arranged in the middle position of the frame, two groups of pressure sensors are arranged relatively, a second roller is rotatably connected to the pressure sensor, a support member is arranged on the other side of the frame, the support member is a long square, and the support member A first groove is provided on the member, a slider is slidably connected in the first groove, a first rod is rotatably connected in the first groove, the first rod is a threaded rod, the first rod is penetrated by the frame, a driving member is provided at the bottom of the frame, an action end of the driving member is fixedly connected to the first rod, a belt and a synchronous wheel are provided on the driving member, two groups of supporting members are relatively provided, so that the two groups of sliders slide up and down synchronously, a third roller is provided on the slider, the third roller moves up and down with the slider, the driving member is electrically connected to the pressure sensor, when the pressure sensor detects that the pressure of the film on the second roller decreases, the driving member rotates to make the film tight on the third roller, so that the film is tight on the second roller, when the pressure sensor detects that the pressure of the film on the second roller increases, the driving member rotates to make the film tight on the third roller and the pressure is in a suitable state, so that the film is located on the second roller, thereby achieving the effect of automatically adjusting the tension of the film. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of the tensioning device of the film blowing machine in the utility model.
[0013] Figure 2 It is a cross-sectional view of the tensioning device of the film blowing machine in the utility model.
[0014] Figure 3 for Figure 1 A partial enlarged view of middle A.
[0015] In the figure: 1. frame; 2. first roller; 3. flattening device; 31. rotating member; 32. fourth roller; 33. guide rod; 34. elastic member; 35. baffle; 4. pressure sensor; 5. second roller; 6. third roller; 7. adjusting device; 71. supporting member; 711. first groove; 72. slider; 73. first rod; 74. driving member. DETAILED DESCRIPTION
[0016] The embodiment of the present application provides a tensioning device for a film blowing machine, thereby solving the problem in the prior art that as the bubble film is continuously rolled up, the linear speeds of the unwinding roller and the winding roller in the film blowing machine will change, and the existing tensioning mechanism cannot automatically make corresponding adjustments, so the bubble film is affected by pulling or relaxing, resulting in poor tensioning effect of the bubble film, which affects the rolling effect of the bubble film.
[0017] The technical solution in the embodiment of the present application is to solve the above problems, and the overall idea is as follows
[0018] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0019] A tensioning device for a film blowing machine comprises a frame 1, a first roller 2 arranged on one side of the frame 1, a flattening device 3 for pressing a film against the first roller 2 for transmission, a pressure sensor 4 arranged in the middle of the frame 1, a second roller 5 rotatably connected to the pressure sensor 4, a third roller 6 arranged on the frame 1 and an adjusting device 7 for adjusting the upper and lower heights of the third roller 6; the pressure sensor 4 is electrically connected to the adjusting device 7; the flattening device 3 is arranged on the frame 1 and the active end of the flattening device 3 corresponds to the first roller 2; the third roller 6 is arranged at the active end of the adjusting device 7.
[0020] The flattening device 3 includes a rotating member 31, a fourth roller 32 arranged on the rotating member 31, a guide rod 33 arranged on the frame 1, an elastic member 34 that enables the fourth roller 32 to always press the third roller 6, and a baffle 35 arranged on the guide rod 33; the baffle 35 is arranged on the guide rod 33; the elastic member 34 is sleeved with the guide rod 33; one end of the elastic member 34 is fixedly connected to the rotating member 31, and the other end of the elastic member 34 is fixedly connected to the baffle 35; the fourth roller 32 corresponds to the first roller 2; the elastic member 34 pulls the rotating member 31 to move in the direction of the baffle 35.
[0021] The adjusting device 7 includes a supporting member 71, a slider 72 sliding on the supporting member 71, a first rod 73 driving the slider 72 to move up and down, and a driving member 74 driving the first rod 73 to rotate; the driving member 74 is arranged on the frame 1; a first groove 711 is opened on the supporting member 71; the slider 72 slides in the first groove 711; the first rod 73 is rotatably connected in the first groove 711; the first rod 73 is fixedly connected to the action end of the driving member 74.
[0022] The driving member 74 is also provided with a synchronous wheel and a belt on its active end; two sets of supporting members 71 are relatively provided; and the driving member 74 controls the sliders 72 on both sides to move up and down synchronously at the same time.
[0023] The first rod 73 is a threaded rod.
[0024] The frame 1 is square and hollow inside. A first roller 2 is provided on one side of the frame 1. The first roller 2 is rotatably connected to the frame 1. A rotating member 31 is rotatably connected to the side of the frame 1 facing the first roller 2. A fourth roller 32 is rotatably connected to the rotating member 31. A guide rod 33 is provided on the frame 1. The guide rod 33 is arc-shaped and has a circular cross-section. The guide rod 33 is penetrated by the rotating member 31. A baffle 35 is provided on the guide rod 33. An elastic member 34 is sleeved on the guide rod 33. One end of the elastic member 34 is fixedly connected to the rotating member 31, and the other end of the elastic member 34 is fixedly connected to the baffle 35. Two groups of rotating members 31 are relatively arranged. The elastic member 34 drives the fourth roller 32 to press tightly on the first roller 2, thereby pressing the film flatly on the first roller 2 to prevent wrinkles and have high transmission efficiency. A pressure sensor 4 is provided in the middle position of the frame 1. Two groups of pressure sensors 4 are relatively arranged. A second roller 5 is rotatably connected to the pressure sensor 4. A support member 71 is provided on the other side of the frame 1. The support member 71 is in the shape of a long strip The support member 71 is square, and a first groove 711 is provided on the support member 71. A slider 72 is slidably connected in the first groove 711. A first rod 73 is rotatably connected in the first groove 711. The first rod 73 is a threaded rod. The first rod 73 is penetrated by the frame 1. A driving member 74 is provided at the bottom of the frame 1. The action end of the driving member 74 is fixedly connected to the first rod 73. A belt and a synchronous wheel are provided on the driving member 74. Two groups of supporting members 71 are relatively provided, so that the two groups of sliders 72 slide up and down synchronously. A third roller 6 is provided on the slider 72. The third roller 6 moves up and down with the slider 72. The driving member 74 is electrically connected to the pressure sensor 4. When the pressure sensor 4 detects that the pressure of the film on the second roller 5 decreases, the driving member 74 rotates to tighten the film on the third roller 6, so that the film is tightened on the second roller 5. When the pressure sensor 4 detects that the pressure of the film on the second roller 5 increases, the driving member 74 rotates to tighten the film on the third roller 6 and the pressure is in a suitable state, so that the film is located on the second roller 5.
[0025] Since the frame 1 is square and hollow inside, a first roller 2 is arranged on one side of the frame 1, and the first roller 2 is rotatably connected to the frame 1. A rotating member 31 is rotatably connected to the side of the frame 1 facing the first roller 2, and a fourth roller 32 is rotatably connected to the rotating member 31. A guide rod 33 is arranged on the frame 1, and the guide rod 33 is arc-shaped and has a circular cross-section. The guide rod 33 is penetrated by the rotating member 31, and a baffle 35 is arranged on the guide rod 33. An elastic member 34 is sleeved on the guide rod 33, and one end of the elastic member 34 is fixedly connected to the rotating member 31, and the other end of the elastic member 34 is fixedly connected to the baffle 35. Two groups of rotating members 31 are relatively arranged, and the elastic member 34 drives the fourth roller 32 to press tightly on the first roller 2, so that the film is pressed flat on the first roller 2 to prevent wrinkles and have high transmission efficiency. A pressure sensor 4 is arranged in the middle position of the frame 1, and two groups of pressure sensors 4 are relatively arranged. A second roller 5 is rotatably connected to the pressure sensor 4. A support member 71 is arranged on the other side of the frame 1. The support member 71 is a long square. A first groove 711 is provided on the member 71, and a slider 72 is slidably connected in the first groove 711. A first rod 73 is rotatably connected in the first groove 711. The first rod 73 is a threaded rod. The first rod 73 is penetrated by the frame 1. A driving member 74 is provided at the bottom of the frame 1. The action end of the driving member 74 is fixedly connected to the first rod 73. A belt and a synchronous wheel are provided on the driving member 74. Two groups of supporting members 71 are relatively provided, so that the two groups of sliders 72 slide up and down synchronously. A third roller 6 is provided on the slider 72, and the third roller 6 moves up and down with the slider 72. The driving member 74 is electrically connected to the pressure sensor 4. When the pressure sensor 4 detects that the pressure of the film on the second roller 5 decreases, the driving member 74 rotates to make the film tight on the third roller 6, so that the film is tight on the second roller 5. When the pressure sensor 4 detects that the pressure of the film on the second roller 5 increases, the driving member 74 rotates to make the film tight on the third roller 6 and the pressure is in a suitable state, so that the film is located on the second roller 5, thereby achieving the effect of automatically adjusting the tension of the film.
[0026] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.
[0027] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
Claims
1. A tensioning device for a film blowing machine, characterized in that: The invention comprises a frame (1), a first roller (2) arranged on one side of the frame (1), a flattening device (3) for pressing a film against the first roller (2) for transmission, a pressure sensor (4) arranged in the middle of the frame (1), a second roller (5) rotatably connected to the pressure sensor (4), a third roller (6) arranged on the frame (1), and an adjusting device (7) for adjusting the upper and lower heights of the third roller (6); the pressure sensor (4) is electrically connected to the adjusting device (7); the flattening device (3) is arranged on the frame (1) and the active end of the flattening device (3) corresponds to the first roller (2); the third roller (6) is arranged at the active end of the adjusting device (7).
2. The tensioning device of the film blowing machine according to claim 1, characterized in that: The flattening device (3) comprises a rotating member (31), a fourth roller (32) arranged on the rotating member (31), a guide rod (33) arranged on the frame (1), an elastic member (34) which enables the fourth roller (32) to always press the third roller (6), and a baffle (35) arranged on the guide rod (33); the baffle (35) is arranged on the guide rod (33); the elastic member (34) is sleeved with the guide rod (33); one end of the elastic member (34) is fixedly connected to the rotating member (31), and the other end of the elastic member (34) is fixedly connected to the baffle (35); the fourth roller (32) corresponds to the first roller (2); and the elastic member (34) pulls the rotating member (31) to move in the direction of the baffle (35).
3. The tensioning device of the film blowing machine according to claim 1, characterized in that: The adjusting device (7) comprises a supporting member (71), a sliding block (72) sliding on the supporting member (71), a first rod (73) driving the sliding block (72) to move up and down, and a driving member (74) driving the first rod (73) to rotate; the driving member (74) is arranged on the frame (1); a first groove (711) is provided on the supporting member (71); the sliding block (72) slides in the first groove (711); the first rod (73) is rotatably connected in the first groove (711); and the first rod (73) is fixedly connected to an action end of the driving member (74).
4. The tensioning device of the film blowing machine according to claim 3, characterized in that: The driving member (74) is also provided with a synchronous wheel and a belt on its active end; the supporting members (71) are provided with two groups relatively; the driving member (74) simultaneously controls the sliding blocks (72) on both sides to move up and down synchronously.
5. The tensioning device of the film blowing machine according to claim 3, characterized in that: The first rod (73) is a threaded rod.