Needle feeding and scrap sucking device for film

Abstract

The utility model provides a needle feeding and scrap sucking device for a thin film, and belongs to the technical field of thin film production equipment. Comprising a needle plate conveyor belt and a vacuum system, a needle pressing wheel is erected above the needle plate conveying belt and can rotate under the driving of the needle plate conveying belt and press a film into the needle plate conveying belt; the vacuum system is communicated with a vacuum cover, and the vacuum cover is arranged above the needle pressing wheel in a covering mode. According to the needle feeding and scrap sucking device for the thin film, the vacuum cover is arranged in a main area where scraps are generated in the needle feeding process of the thin film, the scraps are sucked away immediately when the needle pressing wheel and the needle plate pierce and leave the thin film to generate the scraps, and the scraps are prevented from falling on the thin film outside the scrap generating area; vacuum adsorption is locally used at the position, fixed by the needle pressing wheel and the needle plate conveying belt, of the thin film, the influence on the whole thin film belt during vacuum suction of scraps is effectively reduced, and the thin film is prevented from wrinkling under the influence of negative pressure.

Description

Technical Field

[0001] The present application belongs to the technical field of film production equipment, and more specifically, to a device for sucking debris with a needle for film. Background Art

[0002] During the film production process, in the high-temperature film stretching section, the needle plate conveyor is an important device for carrying and stretching the film. During the film needle-on process, the needle plate will pierce the film to produce film debris, which will fall on the film and be driven into the high-temperature furnace by the needle plate conveyor. During the high-temperature treatment, the debris will adhere to the film and cannot be removed by film dust removal.

[0003] In the prior art, in order to remove film debris in time when it is generated, the technical solution adopted is to add dust collection equipment in the debris generation area. For example, Chinese utility model patent with publication number 213107161U provides a PVC film edge cutting dust collection device, which discloses that a dust collection box is set on a workbench for cutting plastic film. When the PVC film is trimmed, the generated dust and debris are sucked into the dust collection box and collected centrally through a collection box.

[0004] However, the prior art has certain deficiencies. Specifically, when the vacuum cleaner is working, it affects all films near its working area, which can easily cause wrinkles and affect the quality of the film. At the same time, the debris generated by cutting the film spreads over a large area and is difficult to collect completely. Summary of the invention

[0005] The present application provides a debris suction device for a film, which can promptly remove film debris when it is generated, and can solve the problem in the background technology that the dust suction has a large impact range, resulting in film wrinkles and debris that are difficult to collect completely.

[0006] In order to solve the above problems, the technical solution adopted in the present application is a thin film upper needle suction debris device, including a needle plate conveyor belt and a vacuum system;

[0007] A needle pressing wheel is arranged above the needle plate conveyor belt, and the needle pressing wheel can rotate under the drive of the needle plate conveyor belt and press the film into the needle plate conveyor belt; the vacuum system is connected with a vacuum cover, and the vacuum cover is arranged above the needle pressing wheel.

[0008] Preferably, the needle pressing wheel includes a fixed wheel and a rotating wheel capable of rotating relative to the fixed wheel, the fixed wheel is provided with a vacuum channel connected to the vacuum system and extending to the outer wheel surface of the fixed wheel, the rotating wheel is provided with a through hole capable of connecting to the vacuum channel and extending through the rotating wheel, and the outer wheel surface of the rotating wheel is provided with a pressing needle capable of being inserted between the needles of the needle plate conveyor belt.

[0009] Preferably, the vacuum channel is arranged below the fixed wheel in a direction perpendicular to the needle plate conveyor belt.

[0010] Preferably, the vacuum cover is provided with an openable movable panel.

[0011] Preferably, the vacuum cover and the movable plate are made of transparent material.

[0012] Preferably, the vacuum system includes a vacuum fan, a vacuum tank and a vacuum pipeline which are interconnected, a filter is provided at the connection between the vacuum fan and the vacuum tank, and the vacuum tank is provided with a vacuum tank cover.

[0013] Preferably, a pressure regulating valve is provided on the vacuum pipeline.

[0014] The beneficial effects of the utility model are:

[0015] 1. A vacuum cover is set at the pressure wheel where debris is mainly generated during the film needle application process. When the pressure wheel and needle plate pierce and leave the film to generate debris, the debris is immediately sucked away to prevent it from falling on the film outside the debris generation area. At the same time, the debris carried by the pressure wheel is also sucked to prevent the pressure wheel from carrying a large amount of film and affecting its auxiliary effect on the film needle application;

[0016] 2. Vacuum adsorption is used locally at the position where the film is fixed by the pin wheel and the needle plate conveyor belt, which effectively reduces the impact of vacuum suction debris on the entire film belt, improves the flatness of the film, prevents the film from wrinkling under the influence of negative pressure, and prevents the film from detaching from the needle plate conveyor belt due to negative pressure suction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments or the prior art description:

[0018] Figure 1 It is a schematic diagram of the overall structure of this application;

[0019] Figure 2 It is a three-dimensional diagram of the vacuum system of this application;

[0020] Figure 3 This is a schematic diagram of the installation structure of the movable board of this application;

[0021] Figure 4 It is a three-dimensional schematic diagram of the pin pressing wheel composed of a fixed wheel and a rotating wheel of the present application;

[0022] Figure 5 It is a side view of the pin pressing wheel composed of a fixed wheel and a rotating wheel of the present application;

[0023] Figure 6 yes Figure 5 AA section view;

[0024] Figure 7 It is a three-dimensional schematic diagram of the fixed wheel of the present application;

[0025] Figure 8 It is a three-dimensional schematic diagram of the rotating wheel of the present application;

[0026] Fig. 9 It is a three-dimensional schematic diagram of the needle pressing wheel in the present application without a fixed wheel and a rotating wheel.

[0027] Explanation of the reference numerals: 1. Vacuum cover; 2. Needle plate conveyor belt; 3. Vacuum tank; 4. Vacuum pipeline; 5. Vacuum fan; 6. Needle pressing wheel; 7. Needle pressing; 8. Fixed wheel; 9. Rotating wheel; 10. Pressure regulating valve; 11. Clamp; 12. Vacuum channel; 13. Through hole; 14. Pressure dividing tube; 15. Bearing; 16. Shaft plate; 17. Film; 18. Vacuum tank cover; 19. Movable plate; 20. Needle pressing wheel protrusion. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0029] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] A thin film upper needle aspiration debris device provided in an embodiment of the present application is now described:

[0031] like Figure 1 As shown, the needle suction debris device for the film includes a needle plate conveyor belt 2 and a vacuum system, the vacuum system includes a vacuum fan 5, a vacuum tank 3, a vacuum pipeline 4 and a vacuum cover 1, the vacuum pipeline 4 connects the vacuum tank 3 and the vacuum cover 1, the vacuum fan 5 is connected to the vacuum tank 3, a needle pressing wheel 6 is mounted above the needle plate conveyor belt 2, the needle pressing wheel 6 can rotate under the drive of the needle plate conveyor belt 2, and press the film 17 into the needle plate conveyor belt 2; the vacuum pipeline 4 is connected to the vacuum cover 1, and the vacuum cover 1 is arranged above the needle pressing wheel 6.

[0032] The needle plate conveyor belt 2 is used to fix the film 17 and carry the film 17 to move. The vacuum fan 5 extracts the gas in the vacuum tank 3 to form a negative pressure in the vacuum tank 3. The negative pressure is transmitted to the vacuum cover 1 through the vacuum pipeline 4 to provide a negative pressure environment in the vacuum cover 1. The needle pressing wheel 6 cooperates with the needle plate conveyor belt 2 to pierce the film 17 with needles and fix it on the needle plate conveyor belt 2. This process is called needle loading. Figure 1 The direction pointed by the arrow is the running direction of the film.

[0033] Specifically, the film 17 at the front end of the film 17 in the running direction has completed the needle-loading process, and is driven by the needle plate conveyor belt 2 to move in the running direction of the film 17, thereby driving the film 17 behind the running direction of the film 17 to move toward the needle plate conveyor belt 2. When the film 17 moves to the needle plate conveyor belt 2, due to the pulling effect of the film 17 in front, part of the film 17 is pierced by the needle plate of the needle plate conveyor belt 2 until the film 17 moves to the needle pressing wheel 6. The needle pressing wheel 6 presses the film deeper into the needle plate conveyor belt 2, completing the fixation between the film 17 and the needle plate conveyor belt 2. In this operation, the film 17 is damaged and a large amount of debris is generated. The vacuum cover 1 is set above the needle pressing wheel 6 to completely cover the needle pressing wheel to prevent the debris from floating.

[0034] The area where the film 17 is damaged and produces debris is covered by the vacuum cover 1. The generated debris is immediately attracted to the vacuum tank 3 through the vacuum pipe 4 connected to the vacuum cover 1 under the action of negative pressure, and will not float on the rest of the film 17, nor will it be brought into the high-temperature furnace by the film 17. The vacuum area formed by the vacuum cover 1 mainly covers the needle area on the film 17, where the film 17 is fixed by the needle wheel 6 and the needle plate conveyor belt 2 respectively, and will not be separated from the needle plate conveyor belt 2 under the influence of negative pressure, and at the same time, the film 17 in other areas is prevented from wrinkling due to the negative pressure.

[0035] In this embodiment, if Fig. 9 As shown, there is a pin press wheel protrusion 20 on the wheel surface of the pin press wheel 6. When working, the position of the pin press wheel 6 is adjusted to between the pin press wheel protrusion 20 and the needle of the needle plate conveyor belt 2. When the needle plate conveyor belt 2 moves, the needle of the needle plate conveyor belt 2 touches the pin press wheel protrusion 20, thereby driving the pin press wheel 6 to rotate, and the pin press wheel protrusion 20 will also press the film 17 running here into the needle plate conveyor belt 2.

[0036] Furthermore, if Figure 1 , 4 As shown in Figures 5, 6, 7 and 8, the needle pressing wheel 6 includes a fixed wheel 8 and a rotating wheel 9 which can rotate relative to the fixed wheel 8. The fixed wheel 8 is provided with a vacuum channel 12 which is connected with the vacuum pipeline 4 and passes through the wheel surface of the fixed wheel 8. The rotating wheel 9 is provided with a through hole 13 which can be connected with the vacuum channel 12 and passes through the rotating wheel 9. The outer wheel surface of the rotating wheel 9 is provided with a pressing needle 7 which can be inserted between the needles of the needle plate conveyor belt 2.

[0037] In this embodiment, the fixed wheel 8 is fixed on the vacuum pipeline 4 extending into the vacuum cover 1, and the rotating wheel 9 is wrapped around the outside of the fixed wheel 8. Two bearings 15 are arranged between the fixed wheel 8 and the rotating wheel 9. The bearings 15 are located on both sides of the wheel surface of the fixed wheel 8 to avoid interference with the vacuum channel 12 of the fixed wheel 8 and the through hole 13 of the rotating wheel 9 to suck in debris. Under the action of the bearings 15, the rotating wheel 9 can be driven by the needle plate conveyor belt 2 to rotate around the fixed wheel 8. Specifically, before use, the position of the rotating wheel 9 is adjusted so that the pressure pin 7 arranged on its outer wheel surface is inserted between the needles of the needle plate conveyor belt 2. When the needle plate conveyor belt 2 moves, the needles of the needle plate conveyor belt 2 touch the pressure pin 7 of the rotating wheel 9, and the rotating wheel 9 is rotated. At this time, the fixed wheel 8 does not rotate.

[0038] The through hole 13 of the rotating wheel 9 is connected with the vacuum channel 12 of the fixed wheel 8, the vacuum pipeline 4 and the vacuum tank 3. The pressure needle 7 arranged on the wheel surface of the rotating wheel 9 will carry debris in the process of piercing the film 17 and leaving the film 17. When the debris on the rotating wheel 9 rotates to the vacuum channel 12 of the fixed wheel 8 as the rotating wheel 9 rotates, it enters the vacuum pipeline 4 through the through hole 13 of the rotating wheel 9 and the vacuum channel 12 of the fixed wheel 8 under the action of negative pressure, and is finally collected in the vacuum tank 3, thereby effectively preventing the debris driven by the rotating wheel 9 from being scattered on the film 17, and timely removing the debris carried by the rotating wheel 9, ensuring that the pressure needle 7 of the rotating wheel 9 works effectively and permanently.

[0039] Furthermore, if Figure 6 As shown, the vacuum channel 12 is arranged below the fixed wheel 8 and in a direction perpendicular to the needle plate conveyor belt 2. The vacuum channel 12 on the fixed wheel 8 is arranged in this direction, so that when the film 17 generates debris during the needle pressing process, it is immediately carried to the opening of the vacuum channel 12 by the needle plate conveyor belt 2 and the rotating wheel 9, which can make the negative pressure closer to the debris generation area, further improving the debris removal efficiency.

[0040] Furthermore, if Figure 1 and Figure 3 As shown, the vacuum cover 1 is provided with an openable movable plate 19. In this embodiment, the movable plate 19 is arranged on the side wall of the vacuum cover 1, and the movable plate 19 and the vacuum cover 1 are movably connected through the shaft plate 16. The movable plate 19 and the vacuum cover 1 are locked by the clamping lock 11. After opening the clamping lock 11, the vacuum cover 1 can be opened to observe the operation of the needle pressing wheel 6 and the needle plate conveyor belt 2.

[0041] Furthermore, the vacuum cover 1 and the movable plate 19 are made of transparent materials. In this embodiment, the vacuum cover 1 and the movable plate 19 are made of transparent polymethyl methacrylate (also known as acrylic or organic glass), and the working conditions of the needle pressing wheel 6 and the needle plate conveyor belt 2 can be observed without opening the movable plate 19, and timely adjustments can be made.

[0042] Furthermore, if Figure 1 As shown, a filter is provided at the connection between the vacuum fan 5 and the vacuum tank 3, and a vacuum tank cover 18 is provided at the vacuum tank 3. After the debris enters the vacuum tank 3 through the vacuum pipeline 4 under the action of negative pressure, it accumulates and remains in the vacuum tank 3. In order to prevent the vacuum fan 5 from being damaged by the debris, a filter is provided at the connection between the vacuum fan 5 and the vacuum tank 3. In this embodiment, a vacuum tank cover 18 is provided above the vacuum tank 3, and the vacuum tank cover 18 is locked with the vacuum tank 3 by a clamp lock 11. After the equipment has been working for a period of time, as the debris accumulated in the vacuum tank 3 increases, it is necessary to clean the debris to prevent the connection between the vacuum fan 5 and the vacuum tank 3 from being blocked and affecting the use of the vacuum system. The vacuum tank cover 18 is provided to facilitate opening the vacuum tank 3 to clean the debris.

[0043] Furthermore, if Figure 2 As shown, a pressure regulating valve 10 is provided on the vacuum pipeline 4. In this embodiment, the pressure regulating valve 10 is provided below the pressure dividing pipe 14, and controls the negative pressure flow in the two vacuum covers 1 respectively, and makes a judgment according to the debris situation in the vacuum cover 1. If the amount of debris generated is relatively large, the negative pressure flow of the branch pipeline is increased to ensure the debris removal effect, and if the amount of debris generated is small, the negative pressure flow of the branch pipeline is reduced to reduce the energy consumption of the vacuum fan 5.

[0044] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A device for sucking debris from a film with a needle, comprising a needle conveyor belt and a vacuum system, characterized in that: A needle pressing wheel is arranged above the needle plate conveyor belt, and the needle pressing wheel can rotate under the drive of the needle plate conveyor belt and press the film into the needle plate conveyor belt; the vacuum system is connected with a vacuum cover, and the vacuum cover is arranged above the needle pressing wheel.

2. The device for sucking debris from a thin film with a needle as claimed in claim 1, characterized in that: The needle pressing wheel includes a fixed wheel and a rotating wheel capable of rotating relative to the fixed wheel, the fixed wheel is provided with a vacuum channel connected to the vacuum system and extending to the outer wheel surface of the fixed wheel, the rotating wheel is provided with a through hole capable of connecting to the vacuum channel and extending through the rotating wheel, and the outer wheel surface of the rotating wheel is provided with a pressing needle capable of being inserted between the needles of the needle plate conveyor belt.

3. The device for sucking debris from a thin film with a needle as claimed in claim 2, characterized in that: The vacuum channel is arranged below the fixed wheel and in a direction perpendicular to the needle plate conveyor belt.

4. The device for sucking debris from a thin film with a needle as claimed in claim 1, characterized in that: The vacuum cover is provided with an openable movable panel.

5. The device for sucking debris from a thin film with a needle as claimed in claim 4, characterized in that: The vacuum cover and the movable plate are made of transparent materials.

6. The device for sucking debris from a thin film with a needle as claimed in claim 1, characterized in that: The vacuum system comprises a vacuum fan, a vacuum tank and a vacuum pipeline which are interconnected; a filter is provided at the connection between the vacuum fan and the vacuum tank, and the vacuum tank is provided with a vacuum tank cover.

7. The device for sucking debris from a thin film with a needle as claimed in claim 6, characterized in that: A pressure regulating valve is arranged on the vacuum pipeline.

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