A film cutting device for improving diaphragm drum

Abstract

This utility model relates to the field of adhesive film cutting technology, specifically an adhesive film cutting device for improving film drums, including a roller body; multiple first slots are circumferentially formed inside the roller body; a heater is inserted into the first slot; multiple second slots are circumferentially formed inside the roller body; heating strips are arranged inside the second slots; an integral heating layer composed of multiple heaters uniformly heats the roller body as a whole, causing the surface of the roller body to heat up as a whole; a ring-shaped point heating layer composed of multiple heating strips provides point-like localized heating to the roller body, causing point-like localized high temperatures on the surface of the roller body; the temperature of the roller body surface heats the adhesive film strip passing through, causing the adhesive film strip to soften due to heat, reducing the elasticity of the adhesive film strip, reducing the occurrence of wrinkles and arches on the cut surface after the adhesive film is cut, thereby improving the cutting quality of the adhesive film, and thus improving the quality of solar module production.

Description

Technical Field

[0001] This utility model relates to the field of film cutting technology, specifically a film cutting device for improving the film drum. Background Technology

[0002] Encapsulant film is an encapsulation material used in the production of solar modules. It is used in the lamination and encapsulation process of solar cell modules to cover the surface of the cells to form a protective layer. At the same time, it improves the overall power generation efficiency of the module by optimizing light transmittance. It has functions such as protecting solar cells and improving the durability of the module. Encapsulant film is usually transported and stored in roll form and is cut into film sheets of appropriate size when used.

[0003] During film cutting, the rolled film is fixed by a pneumatic expansion shaft and released by a three-stage servo pressure roller system. The tension sensor monitors and provides feedback in real time to adjust the tension, ensuring that the film layer is flat and wrinkle-free. The control system drives the cutting mechanism to cut the film based on visual coordinates. The cut film is then output by a conveyor belt.

[0004] When existing film cutting equipment cuts film, the film roll needs to be moved by the rotation of the roller, which puts the film under tension and keeps it in a taut state. After the film is cut, it shrinks, causing wrinkles and bulges on the cut surface. When the wrinkled and bulging film is laminated and encapsulated in solar modules, it will cause local film bulging, which will cause stringing in the stacking machine and the stacking and bonding machine, and eventually cause the cells to crack.

[0005] Therefore, an improved film cutting device for the diaphragm drum is proposed to address the above problems. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: The adhesive film cutting device for improving the film drum of this utility model includes a roller body; a through hole is opened in the middle of the roller body, and a roller shaft is fixedly connected inside the through hole; a plurality of first slots are opened around the inside of the roller body; a heater is inserted into the inside of the first slot; a plurality of second slots are opened around the inside of the roller body; the second slots are located on the outer ring of the plurality of first slots; a heating strip is provided inside the second slot.

[0008] Preferably, a strip-shaped box is inserted into the interior of the second slot; the interior of the strip-shaped box is provided with a sliding and adjustable slide bar; the heating bar is fixedly installed on the outer wall of the slide bar near the roller.

[0009] Preferably, a screw is rotatably mounted on one end of the strip-shaped box; a screw hole is provided at the end of the slide bar near the screw; the screw hole is threadedly engaged with the screw.

[0010] Preferably, the outer ring of the roller body is fitted with a roller sleeve; the outer wall of the roller sleeve is provided with a plurality of circular holes.

[0011] Preferably, both ends of the roller are fitted with end caps; the end caps are in contact with the ends of the roller body; and the diameter of the end caps is larger than the diameter of the roller body.

[0012] Preferably, an annular groove is formed on one side of the end cap near the roller body; an annular first sealing sleeve is fixedly connected to the middle of the annular groove; a pair of first conductive rings are provided inside the first sealing sleeve, and the two first conductive rings are concentrically fitted; positive and negative power lines are connected to the ends of the heater and the heating strip respectively; the positive and negative power lines are connected to the two first conductive rings respectively; a second sealing sleeve is rotatably installed on the side of the end cap away from the roller body; a pair of second conductive rings are provided inside the second sealing sleeve, and the two second conductive rings are concentrically fitted; the two second conductive rings are connected to the power supply through wires; a contact is connected between the two first conductive rings and the two second conductive rings.

[0013] Preferably, the contact element includes a fixed base that is fixedly connected to the first conductive ring; a contact sleeve that is slidably mounted on the outer ring of the fixed base and contacts the second conductive ring; and a spring is fixedly connected between the contact sleeve and the fixed base.

[0014] The advantages of this utility model are:

[0015] 1. The adhesive film cutting device for improving film drums described in this utility model comprises a roller body, a roller shaft, a first slot, a heater, a second slot, and heating strips. When the adhesive film needs to be heated and softened as a whole, the heater is energized and heats up. The integral heating layer composed of multiple heaters evenly heats the roller body as a whole, causing the surface of the roller body to heat up as a whole. When the adhesive film needs to be heated and softened locally, the dotted heating elements on the heating strips are energized and heat up. The annular dotted heating layer composed of multiple heating strips heats the roller body locally, causing the surface of the roller body to form dotted local high temperatures. The overall heating mode or dotted heating mode of the roller body is selected according to the material of the adhesive film and whether the heating of the adhesive film is overall or local. When the adhesive film moves and is conveyed around the roller body, the temperature of the roller body surface heats the adhesive film strip that passes by, causing the adhesive film strip to soften due to heat, reducing the elasticity of the adhesive film strip, reducing the occurrence of wrinkles and arches on the cut surface of the adhesive film, thereby improving the cutting quality of the adhesive film and thus improving the quality of solar module production.

[0016] 2. The film cutting device for improving the film drum described in this utility model, by setting a roller sleeve and a circular hole; through the elasticity of the roller sleeve itself, the roller sleeve is tightly fitted onto the outer wall of the roller body; by opening a circular hole in the roller sleeve, the friction between the inner wall of the roller sleeve and the outer wall of the roller body is increased, thereby improving the transmission stability between the roller sleeve and the roller body; by opening a circular hole in the roller sleeve, the friction between the outer wall of the roller sleeve and the film is increased, thereby improving the stability of driving the film to move; at the same time, by setting the roller sleeve, direct contact between the film and the roller body is blocked, avoiding the softened film from sticking to the roller body; and by opening a circular hole, the heat on the surface of the roller body is effectively transferred to the film, ensuring the softening effect of the film. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is an exploded structural diagram of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the roller body, heater, and strip-shaped box body in this utility model;

[0021] Figure 4 This is an exploded view of the strip-shaped box body in this utility model;

[0022] Figure 5 This is a cross-sectional view of the end cap of this utility model;

[0023] Figure 6 for Figure 5 A partial structural diagram at point A in the middle;

[0024] Figure 7 This is a first perspective view of the end cap of this utility model;

[0025] Figure 8 This is a second perspective view of the end cap of this utility model;

[0026] Figure 9 This is a three-dimensional structural diagram of the contact element in this utility model.

[0027] In the diagram: 1. Roller body; 2. Roller shaft; 3. Slot No. 1; 4. Heater; 5. Slot No. 2; 6. Heating strip; 7. Strip-shaped box; 8. Sliding strip; 9. Screw; 10. Roller sleeve; 11. Round hole; 12. End cap; 13. Annular groove; 14. Sealing sleeve No. 1; 15. Conductive ring No. 1; 16. Positive and negative power lines; 17. Sealing sleeve No. 2; 18. Conductive ring No. 2; 19. Contact element; 191. Fixing base; 192. Contact sleeve; 193. Spring. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0029] like Figures 1 to 4 As shown, a film cutting device for improving the film drum includes a roller body 1; a through hole is opened in the middle of the roller body 1, and a roller shaft 2 is fixedly connected inside the through hole; a plurality of first slots 3 are opened around the inside of the roller body 1; a heater 4 is inserted into the inside of the first slot 3; a plurality of second slots 5 are opened around the inside of the roller body 1; the second slots 5 are located on the outer ring of the plurality of first slots 3; a heating strip 6 is provided inside the second slot 5.

[0030] Specifically, the roller 2 is fixedly installed in the middle of the roller body 1 through the through hole, and the two ends of the roller 2 are connected to the frame of the film cutting equipment; the roller 2 is driven to rotate by the motor, which drives the roller body 1 to rotate; or, the film moves and contacts the outer wall of the roller body 1, which drives the roller body 1 and the roller 2 to rotate.

[0031] Multiple slots 3 are arranged around the roller shaft 2 on the roller body 1, and the slots 3 penetrate the roller body 1; the heater 4 is a rod-shaped resistance heater, and the length of the heater 4 is the same as the length of the slot 3; multiple heaters 4 are arranged around each other to form an annular integral heating layer.

[0032] Multiple second slots 5 are formed around the roller shaft 2 on the roller body 1, and the second slots 5 penetrate the roller body 1; the multiple second slots 5 are arranged on the outer ring of multiple first slots 3;

[0033] The heating strip 6 is long and narrow; the heating strip 6 includes a long and narrow substrate and dot-shaped heating elements uniformly fixed on the substrate; multiple heating strips 6 are arranged around each other to form a ring-shaped dot heating layer.

[0034] When it is necessary to heat and soften the adhesive film as a whole, the heater 4 inside slot 3 is energized, so that the heater 4 is energized and heats up. The integral heating layer composed of multiple heaters 4 evenly heats the roller body 1 as a whole, so that the surface of the roller body 1 is heated as a whole.

[0035] When it is necessary to locally heat and soften the adhesive film, the heating strip 6 inside the second slot 5 is energized, so that the point heating sheet on the heating strip 6 is energized and heated. Multiple heating strips 6 form a ring-shaped point heating layer to locally heat the roller body 1, so that point-shaped local high temperature is formed on the surface of the roller body 1.

[0036] Depending on the material of the adhesive film and whether it is heated as a whole or in a localized manner, the overall heating mode or the point heating mode of roller 1 is selected. When the adhesive film moves and is conveyed around roller 1, the temperature of the surface of roller 1 heats the adhesive film strip, making the adhesive film strip softer and reducing its resilience. This reduces the occurrence of wrinkles and arches on the cut surface of the adhesive film, thereby improving the cutting quality of the adhesive film and thus improving the quality of solar module production.

[0037] In some embodiments, such as Figures 2 to 4 As shown, a strip-shaped box 7 is inserted into the interior of the second slot 5; a sliding strip 8 that can be adjusted is provided inside the strip-shaped box 7; the heating strip 6 is fixedly installed on the outer wall of the sliding strip 8 near the roller 1.

[0038] Specifically, the length of the strip-shaped box 7 is the same as the length of the second slot 5. The strip-shaped box 7 has an internal cavity, and a sealing cover is bolted to the top surface of the cavity. The slide bar 8 is slidably installed in the cavity of the strip-shaped box 7, and the outer wall of the slide bar 8 is in sliding contact with the inner wall of the cavity of the strip-shaped box 7. The slide bar 8 has a groove for installing the heating bar 6 on the outer ring side near the roller body 1.

[0039] Adjust the heating position of the heating strip 6 on the surface of the roller body 1. At this time, open the sealing cover plate at the top of the strip box 7, push the slide bar 8 to slide along the inner cavity of the strip box 7 to adjust its position, and drive the heating strip 6 to adjust its position, so that the heating position of the heating strip 6 on the outer wall of the roller body 1 is adjusted, thereby adjusting the point heating position of the film, which is beneficial to the heating effect of the film.

[0040] Furthermore, such as Figures 2 to 4 As shown, a screw 9 is rotatably mounted on one end of the strip-shaped box 7; a screw hole is provided at one end of the slide bar 8 near the screw 9; the screw hole is threadedly engaged with the screw 9.

[0041] Specifically, one end of the strip-shaped box 7 has a countersunk hole, and the screw 9 is rotatably installed inside the countersunk hole. By rotating the screw 9, the screw 9 engages with the screw hole at the end of the slide bar 8. Since the outer wall of the slide bar 8 slides in contact with the inner wall of the inner cavity of the strip-shaped box 7, the slide bar 8 slides and adjusts its position in the inner cavity of the strip-shaped box 7, thereby driving the heating bar 6 to adjust its position. This allows the heating bar 6 to adjust the heating position of the outer wall of the roller 1, making it easier for the operator to adjust the point heating position of the adhesive film.

[0042] In some embodiments, such as Figure 1 , Figure 2 and Figure 5 As shown, the outer ring of the roller body 1 is fitted with a roller sleeve 10; the outer wall of the roller sleeve 10 is provided with a plurality of circular holes 11.

[0043] Specifically, the elasticity of the roller sleeve 10 allows it to fit tightly onto the outer wall of the roller body 1. The circular hole 11 on the roller sleeve 10 increases the friction between the inner wall of the roller sleeve 10 and the outer wall of the roller body 1, thereby improving the transmission stability between the roller sleeve 10 and the roller body 1. The circular hole 11 on the roller sleeve 10 also increases the friction between the outer wall of the roller sleeve 10 and the adhesive film, thus improving the stability of driving the adhesive film to move. Simultaneously, the roller sleeve 10 prevents direct contact between the adhesive film and the roller body 1, avoiding adhesion between the softened adhesive film and the roller body 1. Furthermore, the circular hole 11 effectively transfers heat from the surface of the roller body 1 to the adhesive film, ensuring the softening effect of the adhesive film.

[0044] In some embodiments, such as Figure 1 , Figure 2 and Figure 5 As shown, end caps 12 are fitted at both ends of the roller shaft 2; the end caps 12 are in contact with the ends of the roller body 1; the diameter of the end caps 12 is larger than the diameter of the roller body 1;

[0045] Specifically, the end cap 12 has a convex cross-section and a circular groove matching the roller shaft 2 is provided in the middle of the end cap 12. Multiple countersunk screw holes are provided around the outer ring of the end of the end cap 1 away from the roller body 1, and screws are installed in the internal threads of the countersunk screw holes. The end cap 12 is fixed to the outer ring of the roller shaft 2 by pressing the screws against the roller shaft 2. By setting the end caps 12 at both ends of the roller body 1, the adhesive film passing over the roller body 1 is blocked, thus preventing the adhesive film from deviating.

[0046] In some embodiments, such as Figures 5 to 9As shown, an annular groove 13 is formed on one side of the end cap 12 near the roller body 1; an annular first sealing sleeve 14 is fixedly connected to the middle of the annular groove 13; a pair of first conductive rings 15 are provided inside the first sealing sleeve 14, and the two first conductive rings 15 are concentrically fitted; the ends of the heater 4 and the heating strip 6 are both connected to positive and negative power lines 16; the positive and negative power lines 16 are respectively connected to the two first conductive rings 15; a second sealing sleeve 17 is rotatably installed on the side of the end cap 12 away from the roller body 1; a pair of second conductive rings 18 are provided inside the second sealing sleeve 17, and the two second conductive rings 18 are concentrically fitted; the two second conductive rings 18 are connected to the power supply through wires; a contact 19 is connected between the two first conductive rings 15 and the two second conductive rings 18.

[0047] Specifically, the first sealing sleeve 14 has two annular cavities inside, and the two annular cavities pass through the first sealing sleeve 14 on the side of the roller body 1; the positive and negative power lines 16 include a positive power line and a negative power line; one end of the positive power line and the negative power line of the positive and negative power lines 16 are connected to the positive and negative poles of the heater 4 and the heating strip 6, and the other end of the positive power line and the negative power line are respectively connected to two first conductive rings 15.

[0048] The second sealing sleeve 17 has two annular cavities inside, and the two annular cavities pass through the second sealing sleeve 17 on the side of the roller body 1; the two second conductive rings 18 are respectively set in the two annular cavities of the second sealing sleeve 17; the outer walls of the second sealing sleeve 17 are fixedly connected to the frame of the film cutting equipment through the gap between them.

[0049] Multiple through slots are evenly provided on the end cap 12 between the second conductive ring 18 and the first conductive ring 15. The contact element 19 is disposed in the through slot. One end of the contact element 19 is fixedly connected to the first conductive ring 15, and the other end of the contact element 19 is in sliding contact with the second conductive ring 18.

[0050] When roller body 1 and roller shaft 2 rotate, they drive heater 4, heating strip 6 and end cap 12 to rotate, so that heater 4 and heating strip 6 are connected to the first conductive ring 15 through positive and negative power lines 16. End cap 12 drives the first conductive ring 15 and contact member 19 to rotate. Since the second sealing sleeve 17 is fixed to the frame of the film cutting equipment, the second sealing sleeve 17 and the second conductive ring 18 are fixed and are slidably connected to the second conductive ring 18 through contact member 19, so that multiple heaters 4 and heating strip 6 are connected to the power supply, so that a stable power supply can still be provided to the rotating heaters 4 and heating strip 6 when roller body 1 and roller shaft 2 are rotating.

[0051] Furthermore, such as Figure 9As shown, the contact 19 includes a fixed base 191 fixedly connected to the first conductive ring 15; a contact sleeve 192 slidably mounted on the outer ring of the fixed base 191 and in contact with the second conductive ring 18; and a spring 193 fixedly connected between the contact sleeve 192 and the fixed base 191.

[0052] Specifically, the elastic force of the spring 193 causes the contact sleeve 192 to tend to move away from the fixed base 191, so that the contact sleeve 192 is always in contact with the first conductive ring 15. When the second conductive ring 18 and the contact element 19 rotate, the contact sleeve 192 is still in contact with the first conductive ring 15, thereby improving the stable connection between the first conductive ring 15 and the second conductive ring 18, and thus improving the stability of the power supply to the heater 4 and the heating strip 6.

[0053] Working principle: Depending on the material of the adhesive film and whether the film is heated as a whole or in a localized manner, the overall heating mode or the spot heating mode of roller 1 is selected.

[0054] When the film moves and is conveyed around roller 1, the rotation of roller 1 and roller shaft 2 drives the heater 4, heating strip 6 and end cap 12 to rotate. This allows the heater 4 and heating strip 6 to be connected to the first conductive ring 15 through positive and negative power lines 16. The end cap 12 drives the first conductive ring 15 and contact 19 to rotate. Since the second sealing sleeve 17 is fixed to the frame of the film cutting equipment, the second sealing sleeve 17 and the second conductive ring 18 are fixed in place. The contact 19 is slidably connected to the second conductive ring 18, allowing multiple heaters 4 and heating strip 6 to be connected to the power supply. This ensures that a stable power supply is still provided to the rotating heaters 4 and heating strip 6 when roller 1 and roller shaft 2 are rotating.

[0055] When it is necessary to heat and soften the adhesive film as a whole, the heater 4 inside slot 3 is energized, so that the heater 4 is energized and heats up. The integral heating layer composed of multiple heaters 4 evenly heats the roller body 1 as a whole, so that the surface of the roller body 1 is heated as a whole.

[0056] When it is necessary to locally heat and soften the adhesive film, the heating strip 6 inside the second slot 5 is energized, so that the point heating sheet on the heating strip 6 is energized and heated. Multiple heating strips 6 form a ring-shaped point heating layer to locally heat the roller body 1, so that point-shaped local high temperature is formed on the surface of the roller body 1.

[0057] When the adhesive film moves around the roller 1, the temperature of the roller 1 surface heats the adhesive film strip, making the adhesive film strip softer and reducing the elasticity of the adhesive film strip. This reduces the occurrence of wrinkles and arches on the cut surface of the adhesive film, thereby improving the cutting quality of the adhesive film and thus improving the quality of solar module production.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An improved film cutting device for a membrane drum, characterized by: The roller body includes a through hole in the middle of the roller body, and a roller shaft is fixed inside the through hole. Multiple slots of type I are arranged around the inside of the roller body. A heater is inserted into the slot of type I. Multiple slots of type II are arranged around the inside of the roller body. The slots of type II are located on the outer ring of the multiple slots of type I. A heating strip is provided inside the slot of type II.

2. The improved film cutting device for a film drum according to claim 1, wherein: A strip-shaped box is inserted into the inside of the second slot; the inside of the strip-shaped box is provided with a sliding and adjustable slide bar; the heating bar is fixedly installed on the outer wall of the slide bar near the roller.

3. The improved film cutting device for a film drum according to claim 2, wherein: A screw is rotatably mounted on one end of the strip-shaped box; a screw hole is provided at the end of the slide bar near the screw; the screw hole is threadedly engaged with the screw.

4. The improved film cutting device for a film drum of claim 1, wherein: The outer ring of the roller body is fitted with a roller sleeve; the outer wall of the roller sleeve is surrounded by multiple circular holes.

5. The film cutting device for improving the diaphragm drum according to claim 3, characterized in that: Both ends of the roller are fitted with end caps; the end caps are in contact with the ends of the roller body; the diameter of the end caps is larger than the diameter of the roller body.

6. The apparatus for cutting the adhesive film of the membrane drum according to claim 5, wherein: An annular groove is formed on one side of the end cap near the roller body; a first annular sealing sleeve is fixedly connected to the center of the annular groove; a pair of first conductive rings are provided inside the first sealing sleeve, and the two first conductive rings are concentrically fitted; positive and negative power lines are connected to the ends of the heater and the heating strip respectively; the positive and negative power lines are connected to the two first conductive rings respectively; a second sealing sleeve is rotatably installed on the side of the end cap away from the roller body; a pair of second conductive rings are provided inside the second sealing sleeve, and the two second conductive rings are concentrically fitted; the two second conductive rings are connected to the power supply through wires; a contact is connected between the two first conductive rings and the two second conductive rings.

7. The improved film cutting device for a film drum according to claim 6, wherein: The contact element includes a fixed base that is fixedly connected to the first conductive ring; a contact sleeve that is slidably mounted on the outer ring of the fixed base and contacts the second conductive ring; and a spring that is fixedly connected between the contact sleeve and the fixed base.

Images