Negative pressure collecting device for film slitter edges

Abstract

The utility model provides a negative pressure collecting device for thin film slitter edges, and belongs to the technical field of thin film production equipment. Comprising a collecting cabin, a vacuum collecting pipe and a vacuum fan, wherein the collecting cabin is respectively communicated with the vacuum collecting pipe and the vacuum fan; at least two material collecting chambers capable of being drawn out from the collecting bin are arranged at the bottom of the collecting bin in a stacked mode, material collecting chamber cutting plates are arranged above the side walls of the material collecting chambers in the moving direction, and collecting bin cutting plates matched with the material collecting chamber cutting plates are arranged at the positions, corresponding to the material collecting chamber cutting plates, of the side walls of the collecting bin. According to the negative-pressure collecting device for the thin film slitter edges, the thin film slitter edges are collected and cleaned through the multiple material collecting chambers capable of being drawn out of the collecting cabin in turns, and the waste material cleaning process does not need to be stopped; film waste edges which are connected together are cut off through the cutting plate which is matched with the side wall of the collecting cabin and the side wall of the material collecting chamber, the waste edges which are sucked by negative pressure are prevented from being additionally dragged in the waste edge cleaning process, and normal operation of edge cutting equipment and film production equipment is not affected.

Description

Technical Field

[0001] The present application belongs to the technical field of film production equipment, and more specifically, relates to a negative pressure collection device for film waste edges. Background Art

[0002] In the film production process, the edge of the film is often used as the clamped or punctured part, and there are holes, wrinkles and other problems. It needs to be cut off before the film product is rolled and packaged. The cut waste edges are piled up as waste at the production site, which affects the cleanliness of the site and the operation of the staff. It needs to be collected in time after cutting. The traditional collection method is to collect the waste edges into a collection tank by vacuum suction. However, the capacity of the waste edge collection tank is limited. After a period of collection, it is necessary to stop the machine to unload and clean the collection tank. Film products are usually produced continuously. Stopping the machine to unload affects the normal operation of the waste edge collection process during film production.

[0003] In order to solve the problem of discharging film waste edge collection tanks in the prior art, the solution adopted is to chop up the film waste edges sucked into the collection tube by negative pressure suction and discharge them through the vacuum fan outlet. For example, the Chinese utility model patent with publication number CN219190899U provides a bait processing device for polyimide film, which discloses that a negative pressure fan is used to put the inside of a crusher in a negative pressure state, and the bait cut by a cutting knife is sucked into the crusher, and the waste edges are cut by the crusher. The chopped waste edges are sucked into the negative pressure fan and discharged to the storage end through the outlet.

[0004] However, the prior art has certain deficiencies. Specifically, the shredder for shredding the waste edges of the film adds additional equipment and energy consumption, and there is also a risk that the shredded film will be drawn into the equipment when passing through the fan blades, causing damage to the equipment. Summary of the invention

[0005] The present application provides a negative pressure collection device for film waste edges, which solves the problem of cleaning the waste edge collection tank during shutdown, does not require an additional crusher to crush the film waste edges, and the film waste edges do not need to be discharged through a fan.

[0006] In order to solve the above problems, the technical solution adopted in the present application is a negative pressure collection device for film waste edges, including a collection cabin, a vacuum collection pipe and a vacuum fan, wherein the collection cabin is respectively connected to the vacuum collection pipe and the vacuum fan;

[0007] At least two material collection chambers which can be pulled out from the collecting chamber are stacked at the bottom of the collecting chamber, a material collection chamber cutting plate is arranged above the side wall in the moving direction of the material collection chamber, and a matching collecting chamber cutting plate is arranged on the side wall of the collecting chamber at a position corresponding to the material collection chamber cutting plate.

[0008] Preferably, the collecting cabin is provided with a collection chamber extraction outlet, and a sealing curtain is provided at the collection chamber extraction outlet.

[0009] Preferably, the vacuum collecting pipe comprises a suction end and a discharge end, the discharge end is connected to the collecting chamber, and the suction end and the discharge end are located in two spaces.

[0010] Preferably, the side wall of the collection chamber is provided with an observation window.

[0011] Preferably, a filter screen is provided at the connection between the collection chamber and the vacuum blower.

[0012] Preferably, the collecting chamber comprises a second collecting chamber and a first collecting chamber stacked above the second collecting chamber, and a scraper is provided at the bottom of the side wall of the first collecting chamber opposite to the extraction direction thereof.

[0013] Preferably, a handle is provided on the side wall of the first collecting chamber on the same side as the withdrawal direction thereof.

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

[0015] 1. The film waste edges are collected and cleaned in turn by using a plurality of collecting chambers that can be drawn out from the collection tank. The waste cleaning process does not require stopping the machine, and the operation is fast and convenient, which reduces the impact of the film waste edge cleaning process on the vacuum state in the collection tank;

[0016] 2. No need to install a crusher in the collection pipeline, which reduces energy consumption and noise. The film waste is not discharged through the fan, avoiding damage to the equipment;

[0017] 3. The cutting plates that match the side walls of the collecting chamber and the collecting chamber are used to cut off the connected waste edges of the film, so as to avoid additional dragging of the waste edges attracted by negative pressure during the waste edge cleaning process, so that the collection pipe can attract the waste edges of the film at a uniform speed without affecting the normal operation of the trimming equipment and the film production equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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:

[0019] Figure 1 This is a schematic diagram of the overall structure of the negative pressure collection device for film waste edges of the present application;

[0020] Figure 2 It is a three-dimensional schematic diagram of the collection cabin of the present application (the extraction side of the first collection chamber);

[0021] Figure 3 It is a three-dimensional schematic diagram of the collection cabin of the present application (the extraction side of the second collection chamber);

[0022] Figure 4 It is a front view schematic diagram of the collection cabin of the present application;

[0023] Figure 5 yes Figure 4AA section view;

[0024] Figure 6 It is a three-dimensional schematic diagram of the first collection chamber of the present application;

[0025] Figure 7 It is a three-dimensional schematic diagram of the stacking of the aggregate chambers of this application;

[0026] Figure 8 This is a schematic diagram of the installation of the sealing curtain of this application;

[0027] Fig. 9 This is a schematic diagram of the scraper installation of this application.

[0028] Description of reference numerals:

[0029] 1. Collection chamber; 2. Vacuum collection pipe; 3. Vacuum fan; 4. First collection chamber; 5. Second collection chamber; 6. Collection chamber tooth plate; 7. Collection chamber tooth plate; 8. Collection pipe interface; 9. Vacuum fan interface; 10. Observation window; 11. Handle; 12. Film waste edge; 13. Film; 14. Sealing curtain; 15. Scraper; 16. Suction end; 17. Film production room; 18. Film waste edge collection room; 19. Second collection chamber bottom plate; 20. Discharge end. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] like Figure 1 and Figure 5 As shown, a negative pressure collection device for film waste edges, the vacuum collection tube 2 is connected to the collection chamber 1 through the collection tube interface 8, the collection chamber 1 is connected to the vacuum fan 3 through the vacuum fan interface 9, when the vacuum fan 3 is working, the collection chamber 1 and the vacuum collection tube 2 maintain a negative pressure state, the vacuum collection tube 2 is set above the film waste edge cutting device, and the negative pressure in the tube attracts the film waste edge 12 cut off from the film 13, the arrow shows the movement direction of the film waste edge 12, and the film waste edge 12 enters the collection chamber 1 through the vacuum collection tube 2.

[0033] In this embodiment, two material collection chambers that can be drawn out of the collecting chamber 1 are stacked at the bottom of the collecting chamber 1, namely, a second material collection chamber 5 arranged at the bottom of the collecting chamber 1 and a first material collection chamber 4 stacked above the second material collection chamber 5. In this embodiment, the material collection chamber cutting plate and the collecting chamber cutting plate are respectively: a material collection chamber tooth plate 7 arranged above the side walls on both sides of the moving direction of the first material collection chamber 4, and a collecting chamber tooth plate 6 arranged on the side wall of the collecting chamber 1 at a position corresponding to the material collection chamber tooth plate 7 and meshing with the material collection chamber tooth plate 7.

[0034] When the collection chamber 1 needs to be cleaned, the first collection chamber 4 is pulled out until the collection chamber tooth plate 7 in the opposite direction of the movement of the first collection chamber 4 meshes with the collection chamber tooth plate 6 to bite off the connected film waste edge 12, and the film waste edge 12 in the first collection chamber is cleaned. At this time, the collection chamber 1, the vacuum fan 3 and the vacuum collection tube 2 are still in working state, and the film waste edge 12 attracted by the negative pressure into the collection chamber 1 falls into the second collection chamber 5. When the first collection chamber 4 is cleaned, the first collection chamber 4 is pushed back when the second collection chamber 5 needs to be cleaned. During the process of pushing the first collection chamber 4 back, the film waste edge 12 accumulated in the second collection chamber 5 is squeezed, and then the second collection chamber 5 is pushed out of the collection chamber 1 until the collection chamber tooth plate 7 in the same direction of the movement of the first collection chamber 4 meshes with the collection chamber tooth plate 6 on this side to bite off the connected film waste edge 12. At this time, the second collection chamber 5 can be cleaned and the film waste edge 12 is collected by the first collection chamber 4. After the cleaning of the second collection chamber 5 is completed, it is pushed back into the collection chamber 1.

[0035] In order to reduce the space occupied by the aggregate chamber outside the collecting chamber 1, the first aggregate chamber 4 can be pushed back immediately after cleaning, and then the squeezed second aggregate chamber 5 can be cleaned directly. After cleaning, the second aggregate chamber 5 is pushed back to keep the aggregate chambers in the collecting chamber 1 when not cleaning.

[0036] Since the collection chamber can be cleaned in rotation, when cleaning the collection chamber, the collection chamber 1 is only open to the outside world during the process of pulling out and pushing back the collection chamber, which has little impact on the vacuum state in the collection chamber 1. There is no need to set a crusher on the collection path of the film waste edge 12, and there is no need to discharge the collected film waste edge 12 through the vacuum fan 3.

[0037] Furthermore, if Figure 2 and Figure 8As shown, the collection cabin 1 is provided with a collection chamber extraction port, and the collection cabin 1 is provided with a sealing curtain 14 made of polymer material at the collection chamber extraction port. Since there are multiple extractable collection chambers, in order for the collection chamber to be smoothly extracted from the collection cabin 1, gaps are left between the collection chamber and the collection cabin 1, and these gaps will allow air to flow and affect the negative pressure in the collection cabin 1. In this embodiment, in order for the first collection chamber 4 and the second collection chamber 5 to be extracted from the collection cabin 1, there are certain gaps between the second collection chamber 5 and the collection cabin 1, and between the first collection chamber 4 and the second collection chamber 5. A sealing curtain 14 is fixed above the extraction port of the collection chamber, and the sealing curtain 14 is attached to the extraction port of the collection chamber under the suction of negative pressure, playing the role of sealing the extraction port of the collection chamber.

[0038] Furthermore, if Figure 1 As shown, the vacuum collecting pipe 2 includes a suction end 16 and a discharge end 20, and the suction end 16 and the discharge end 20 are located in two spaces. In this embodiment, the suction end 16 of the vacuum collecting pipe 2 is located in the film production room 17, and the discharge end 20 is located in the film waste edge collection room 18 and is connected to the collecting chamber 1 through the collecting pipe interface 8. The air outlet of the vacuum fan 3 will exhaust air during operation, separating the collecting chamber 1 and the film production line provided with the vacuum fan 3, which can prevent the vacuum fan 3 from exhausting air to disturb the normal film production, and also reduce the noise of the film production room 17.

[0039] Furthermore, if Figure 1 and Figure 5 As shown, the side wall of the collecting chamber 1 is provided with an observation window 10. Through the observation window 10, the accumulation of the film waste edges 12 in the collecting chamber 1 can be observed to determine whether the film waste edges 12 should be cleaned to prevent the film waste edges 12 from accumulating excessively in the collecting chamber 1 and clogging the collecting pipe interface 8.

[0040] Furthermore, if Figure 1 As shown, a filter net is provided at the connection between the collection chamber 1 and the vacuum blower 3. Since the waste film 12 is light in weight, although there is no design to discharge the waste film 12 through the vacuum blower 3, there is still a risk of attracting the waste film 12 and causing it to be drawn into the vacuum blower 3 during the operation of the vacuum blower 3. An isolation net is provided to isolate the vacuum blower 3 and the collection chamber 1 to prevent the waste film 12 in the collection chamber 1 from being drawn into the vacuum blower 3 and affecting the operation of the equipment.

[0041] Further, Figure 1 , Figure 2 and Fig. 9As shown, the collection chamber includes a second collection chamber 5 and a first collection chamber 4 stacked above the second collection chamber 5, and a scraper 15 is arranged at the bottom of the side wall opposite to the extraction direction of the first collection chamber 4. When the first collection chamber 4 is extracted, the film waste edges 12 drawn into the collection chamber 1 will fall into the second collection chamber 5. When the first collection chamber 4 is cleaned and pushed back into the collection chamber 1, due to the gap between the bottom of the first collection chamber 4 and the plate surface of the second collection chamber 5, the film waste edges 12 may be squeezed in the gap during the process, which hinders the first collection chamber 4 from being pushed back to the collection chamber 1. The scraper 15 is arranged at the bottom of the first collection chamber 4 in the direction of movement toward the second collection chamber 5, so that when the first collection chamber 4 is pushed back to the collection chamber 1, the scraper 15 scrapes away the film waste edges 12 on the bottom plate 19 of the second collection chamber, which is conducive to the first collection chamber 4 being smoothly pushed back to the collection chamber 1.

[0042] Furthermore, if Figure 2 As shown, the side wall of the first material collection chamber 4 on the same side as the extraction direction is provided with a handle 11. It is convenient to extract the first material collection chamber 4, and the handle provides an additional distance to prevent the staff from being scratched by the collection chamber tooth plate 6 on the side wall of the collection chamber 1 during the operation of the first material collection chamber.

[0043] 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 negative pressure collection device for film waste edges, comprising a collection cabin, a vacuum collection pipe and a vacuum fan, wherein the collection cabin is connected to the vacuum collection pipe and the vacuum fan respectively, and characterized in that: At least two material collection chambers which can be pulled out from the collecting chamber are stacked at the bottom of the collecting chamber, a material collection chamber cutting plate is arranged above the side wall in the moving direction of the material collection chamber, and a collecting chamber cutting plate which matches with the material collection chamber cutting plate is arranged on the side wall of the collecting chamber at a position corresponding to the material collection chamber cutting plate.

2. The negative pressure collecting device for film waste edge according to claim 1, characterized in that: The collecting cabin is provided with a collection chamber extraction outlet, and a sealing curtain is arranged at the collection chamber extraction outlet.

3. The negative pressure collecting device for film waste edge according to claim 1, characterized in that: The vacuum collecting pipe comprises a suction end and a discharge end, the discharge end is connected to the collecting chamber, and the suction end and the discharge end are located in two spaces.

4. The negative pressure collecting device for film waste edge according to claim 1, characterized in that: The side wall of the collecting cabin is provided with an observation window.

5. The negative pressure collecting device for film waste edge according to claim 1, characterized in that: A filter screen is provided at the connection between the collecting cabin and the vacuum blower.

6. The negative pressure collecting device for film waste edge according to claim 1, characterized in that: The material collecting chamber comprises a second material collecting chamber and a first material collecting chamber stacked above the second material collecting chamber, and a scraper is arranged at the bottom of the side wall of the first material collecting chamber opposite to the extraction direction thereof.

7. The negative pressure collecting device for film waste edge according to claim 6, characterized in that: The side wall of the first material collecting chamber on the same side as the extraction direction thereof is provided with a handle.

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