A thin-film conveyor belt

Abstract

The present invention discloses a thin film conveyor belt, which includes an upper driving shaft, an upper tensioning shaft, an upper conveyor belt, a lower driving shaft, a lower tensioning shaft and a lower conveyor belt. The upper conveyor belt is tensioned between the upper driving shaft and the upper tensioning shaft, the lower conveyor belt is tensioned between the lower driving shaft and the lower tensioning shaft, the lower surface of the upper conveyor belt is close to the upper surface of the lower conveyor belt, and the upper and lower driving shafts are driven by a driving device to rotate synchronously. The present invention uses the conveyor belt to clamp the thin film for conveying, ensuring that the thin film moves smoothly and evenly, with more stable quality, and is applicable to the winding of thin film belts that are prone to breakage.

Description

Technical Field

[0001] The present invention relates to the field of conveyor belts, and particularly to a thin film conveyor belt. Background Art

[0002] Thin films are generally made of polyvinyl chloride, polyethylene, polypropylene, polystyrene, and other resins, and are used for packaging and as a coating layer. They are widely used in daily life and have a large output. During the production process, after the thin film is stretched or blow-molded, it needs to be wound into a roll for transportation or sale. Before winding, the thin film needs to be conveyed and moved a certain distance. During this distance, the thin film mostly passes around several rotating shafts to keep the thin film taut and flat. For example, the patent with the patent number 2015200970629: A thin film conveying and dust removal device. However, after multiple windings, the winding resistance of the thin film becomes larger, and it is easy for the thin film to be overly taut and overstretched. When one of the rotating shafts around which the thin film passes rotates too fast, the thin film may not be taut and wrinkles may appear, resulting in unstable thin film quality. In particular, the fresh-keeping bag roll is in the shape of a long strip thin film before winding, and it has a perforated position. As long as there is a slight pulling force, it will break at the perforated position, making it difficult to keep taut and difficult to wind. Summary of the Invention

[0003] The technical problem to be solved by the embodiments of the present invention is to provide a thin film conveyor belt that clamps the thin film for conveyance by the conveyor belt, ensures that the thin film moves smoothly and evenly, has more stable quality, and is applicable to the winding of easily broken film belts.

[0004] To achieve the above object, the present invention discloses a thin film conveyor belt, which includes an upper drive shaft, an upper tensioning shaft, an upper conveyor belt, a lower drive shaft, a lower tensioning shaft, and a lower conveyor belt. The upper conveyor belt is tensioned between the upper drive shaft and the upper tensioning shaft, the lower conveyor belt is tensioned between the lower drive shaft and the lower tensioning shaft, the lower surface of the upper conveyor belt is close to the upper surface of the lower conveyor belt, and the upper and lower drive shafts are driven by a drive device to rotate synchronously.

[0005] Preferably, the upper tensioning shaft is arranged above the lower tensioning shaft in a height-adjustable manner.

[0006] Preferably, the upper drive shaft is arranged above the lower drive shaft in a height-adjustable manner.

[0007] Preferably, it further includes an upper lifting shaft, and the upper lifting shaft is arranged between the upper drive shaft and the upper tensioning shaft in a height-adjustable manner for tensioning the upper conveyor belt.

[0008] Preferably, it further includes a lower lifting shaft, and the lower lifting shaft is arranged between the lower drive shaft and the lower tensioning shaft in a height-adjustable manner for tensioning the conveyor belt.

[0009] Preferably, it further includes an upper fixed shaft which is rotatably arranged on one side of the upper lifting shaft, and the upper conveyor belt winds around the upper lifting shaft and the upper fixed shaft in an S shape.

[0010] Preferably, the upper lifting shaft is elastically liftable.

[0011] Preferably, it further includes a lower fixed shaft which is rotatably arranged on one side of the lower lifting shaft, and the lower conveyor belt winds around the lower lifting shaft and the lower fixed shaft in an S shape.

[0012] Preferably, the lower lifting shaft is elastically liftable.

[0013] Preferably, it further includes a bracket and a swing frame. The upper drive shaft, the lower drive shaft and the lower tensioning shaft are respectively rotatably arranged on the bracket. One end of the swing frame is rotatably connected to the bracket, and the upper tensioning shaft is rotatably arranged at the other end of the swing frame.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] By arranging the upper and lower conveyor belts close to each other to clamp and convey the film belt, the film belt can move smoothly and is basically not affected by tension, is not easily overstretched or broken, has better quality stability, and can adapt to the conveyance of easily broken film belts such as dotted film bags.

[0016] By setting the upper tensioning shaft to be liftable, the height of the film inlet can be adjusted. By setting the upper drive shaft to be liftable, the height of the film outlet can be adjusted. The cooperation of the two makes the distance between the upper and lower conveyor belts adjustable to adapt to different clamping forces corresponding to different film belts.

[0017] By arranging the elastically liftable upper and lower lifting shafts, the upper and lower conveyor belts are elastically tensioned to ensure that the flatness of the film belt is not affected. By arranging the upper and lower fixed shafts, the upper and lower conveyor belts are S-shaped tensioned, and the tensioning effect is better.

[0018] By arranging the swing frame and setting the upper tensioning shaft at one end of the swing frame, when the swing frame swings and rises, the conveyor belt space at the film inlet can be exposed, which is convenient for clamping after the conveyor belt is initially flattened and placed, and is also convenient for cleaning the debris between the conveyor belts. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0020] Figure 2 It is a cross-sectional view of the overall structure of an embodiment of the present invention;

[0021] Figure 3 It is a side cross-sectional view of the overall structure of an embodiment of the present invention. Detailed implementation mode

[0022] To make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to Figures 1 - 3 the accompanying drawings.

[0023] Refer to Figures 1 - 3 As shown, a film conveyor belt includes an upper drive shaft 1, an upper tensioning shaft 3, an upper conveyor belt 10A, a lower drive shaft 2, a lower tensioning shaft 4 and a lower conveyor belt 10B. The upper conveyor belt 10A is tensioned between the upper drive shaft 1 and the upper tensioning shaft 3, and the lower conveyor belt 10B is tensioned between the lower drive shaft 2 and the lower tensioning shaft 4. The lower surface of the upper conveyor belt 10A is close to the upper surface of the lower conveyor belt 10B, and the upper and lower drive shafts 1 and 2 are driven by a drive device 11 to rotate synchronously. The drive device 11 is a conventional rotational drive device such as a motor.

[0024] Both ends of the upper drive shaft 1 are respectively arranged on the bracket in a liftable manner. Both ends of the upper drive shaft 1 are respectively rotatably connected to the sliding seats, and the sliding seats are slidably connected to the bracket 1 in a lifting manner. The upper drive shaft 1 is arranged directly above the lower drive shaft 2, and both ends of the lower drive shaft 2 are respectively rotatably connected to the bracket 1.

[0025] The upper tensioning shaft 3 is rotatably arranged on the swing frame 91. The swing frame 91 includes a first swing frame 911 and a second swing frame 912. The lower end of the first swing frame 911 is rotatably connected to the bracket to realize swinging. The second swing frame 912 is slidably sleeved on the upper end of the first swing frame 911 so that the second swing frame 912 can be adjusted in height. The upper tensioning shaft 3 is rotatably arranged on the second swing frame 912 to realize height adjustment. The upper tensioning shaft 3 is arranged directly above the lower tensioning shaft 4, and both ends of the lower tensioning shaft 4 are respectively rotatably connected to the bracket 1. When the first swing frame 911 swings, it drives the upper tensioning shaft 3 to swing and rise, thereby exposing the conveyor belt space at the film inlet, facilitating the initial flattening and clamping of the conveyor belt after it is placed, and also facilitating the cleaning of debris between the conveyor belts.

[0026] An upper lifting shaft 5 is arranged between the upper drive shaft 1 and the upper tensioning shaft 3 at a liftable height. The upper lifting shaft 5 is rotatably arranged at one end of the upper swing arm 51. The upper swing arm 51 is rotatably connected to the bracket 1 to realize swinging. The upper swing arm 51 is elastically tightened by a spring 52, so that the upper swing arm 51 has an elastic tendency to swing and rise, driving the upper lifting shaft 5 to have an elastic tendency to swing and rise, thereby pressing against the upper conveyor belt 10A.

[0027] A lower lifting shaft 6 is arranged between the lower drive shaft 2 and the lower tensioning shaft 4 at a liftable height. The lower lifting shaft 6 is rotatably arranged at one end of the lower swing arm 61. The lower swing arm 61 is rotatably connected to the bracket 1 to realize swinging. The lower swing arm 61 is elastically tightened by a spring 62, so that the lower swing arm 61 has an elastic tendency to swing and descend, driving the lower lifting shaft 6 to have an elastic tendency to swing and descend, thereby pressing against the lower conveyor belt 10B.

[0028] On one side of the up-and-down shaft 5, an upper fixed shaft 7 is provided. The two ends of the upper fixed shaft 7 are respectively rotatably connected to the bracket 1. The upper conveyor belt 10A winds around the up-and-down shaft 5 and the upper fixed shaft 7 in an S shape, so that the tensioning effect is better.

[0029] On one side of the lower up-and-down shaft 6, a lower fixed shaft 8 is provided. The two ends of the lower fixed shaft 8 are respectively rotatably connected to the bracket 1. The lower conveyor belt 10B winds around the lower up-and-down shaft 6 and the lower fixed shaft 8 in an S shape, so that the tensioning effect is better.

[0030] On one side of the bracket 1, a workbench 92 is further provided, which is used to set the winding device or for stacking and storing single pieces of film, etc.

[0031] Of course, the above embodiments are only for illustrating the technical concept and features of the present invention. The purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly. It cannot be used to limit the protection scope of the present invention. All modifications made according to the spirit and essence of the main technical solution of the present invention should be covered within the protection scope of the present invention.

Claims

1. A thin film conveyor belt, characterized in that, It includes an upper drive shaft, an upper tensioning shaft, an upper conveyor belt, a lower drive shaft, a lower tensioning shaft, a lower conveyor belt, a bracket and a swing frame. The upper conveyor belt is tensioned between the upper drive shaft and the upper tensioning shaft. The lower conveyor belt is tensioned between the lower drive shaft and the lower tensioning shaft. The lower surface of the upper conveyor belt is close to the upper surface of the lower conveyor belt. The upper and lower drive shafts are driven by a driving device to rotate synchronously. The upper tensioning shaft is rotatably arranged on the swing frame. The swing frame includes a first swing frame and a second swing frame. The lower end of the first swing frame is rotatably connected to the bracket to achieve swinging. The second swing frame is slidably sleeved on the upper end of the first swing frame so that the second swing frame can be adjusted up and down. When the first swing frame swings, it drives the upper tensioning shaft to swing and rise, thereby exposing the conveyor belt space at the film inlet. It also includes an upper lifting shaft, which is arranged between the upper drive shaft and the upper tensioning shaft and can be adjusted in height to tension the upper conveyor belt.

2. The thin film conveyor belt according to claim 1, wherein, The upper drive shaft is arranged above the lower drive shaft and can be adjusted in height.

3. The thin film conveyor belt according to claim 1, wherein It also includes a lower lifting shaft, which is arranged between the lower drive shaft and the lower tensioning shaft and can be adjusted in height to tension the lower conveyor belt.

4. The film conveyor belt according to claim 1, wherein It also includes an upper fixed shaft, which is rotatably arranged on one side of the upper lifting shaft. The upper conveyor belt is wound around the upper lifting shaft and the upper fixed shaft in an S shape.

5. The film conveyor belt according to claim 1, wherein The upper lifting shaft is arranged to be elastically adjustable in height.

6. The film conveyor belt according to claim 3, characterized in that, It also includes a lower fixed shaft, which is rotatably arranged on one side of the lower lifting shaft. The lower conveyor belt is wound around the lower lifting shaft and the lower fixed shaft in an S shape.

7. The thin film conveyor belt according to claim 3, wherein, The lower lifting shaft is arranged to be elastically adjustable in height.

8. The thin film conveyor belt according to any one of claims 1-7, characterized in that, The upper drive shaft, the lower drive shaft and the lower tensioning shaft are respectively rotatably arranged on the bracket. One end of the swing frame is rotatably connected to the bracket, and the upper tensioning shaft is rotatably arranged at the other end of the swing frame.

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