Adhesive film cutting device

Abstract

The utility model provides a kind of adhesive film cutting device, including pull belt conveying assembly and film section cutting assembly, the pull belt conveying assembly includes conveying frame, rotary conveying belt and multiple adsorption conveying panels capable of following the synchronous rotation of rotary conveying belt and moving along the conveying direction, each film strip can be adsorbed on the top surface of each adsorption conveying panel, the film section cutting assembly is used to cut the film strip between the adjacent two adsorption conveying panels on the top surface of rotary conveying belt. The utility model does not need the reciprocating motion of traditional pull belt to pull the film strip, shortens the pulling time of film strip, and improves the production rhythm.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic cell string preparation technology, specifically to a film cutting device. Background Technology

[0002] A photovoltaic module's photovoltaic panel is made up of multiple battery strings connected together by busbars. A battery string is made up of multiple battery cells connected together by solder strips. When laying solder strips on the battery cells, the solder strips need to be connected to the grid lines of the battery cells.

[0003] Common methods for connecting solder strips to solar cells include welding, adhesive bonding, and film bonding. Due to the high cost of welding and the poor conductivity of adhesive bonding, film bonding is generally favored in the industry.

[0004] Existing adhesive film bonding solutions are mainly divided into film strip bonding and film sheet bonding. Film sheet bonding involves covering the solar cell with a single film, thereby positioning all the solder ribbons on the solar cell onto the solar cell. Film strip bonding, on the other hand, involves cutting the film into strips and positioning each solder ribbon onto the solar cell using a separate film strip. Compared to film sheet bonding, film strip bonding saves more adhesive film and is therefore a major research direction.

[0005] The existing batch preparation method for membrane strips involves pulling the membrane sheet out of the membrane roll, first dividing the membrane sheet into strips along its length, then using a puller to pull out the strips, and finally placing the strips on a cutting platform for batch cutting to obtain the required membrane strip segments.

[0006] In the existing technology, the belt pulling hand needs to pull the belt repeatedly during the belt pulling process. Due to the return time of the belt pulling hand, it is difficult to improve production efficiency and the production cycle is relatively long. Utility Model Content

[0007] The film cutting device designed in this utility model can overcome the shortcomings of the existing technology, which uses a puller to repeatedly pull the strip during the film strip preparation process, resulting in a return time for the puller, making it difficult to improve production efficiency and resulting in a long production cycle.

[0008] The purpose of this utility model is to provide a film cutting device, including a belt conveyor assembly and a film segment cutting assembly. The belt conveyor assembly includes a conveyor frame, a rotary conveyor belt, and multiple adsorption conveyor panels that can rotate synchronously with the rotary conveyor belt and move along the conveying direction. Each film strip can be adsorbed onto the top surface of each adsorption conveyor panel. The film segment cutting assembly is used to cut the film strip between two adjacent adsorption conveyor panels on the top surface of the rotary conveyor belt.

[0009] In some embodiments, the conveyor frame has vertical walls spaced parallel to the conveying direction of the rotary conveyor belt, and conveying baffles are provided on the inner wall surface of the vertical walls. Conveying guide grooves are constructed on the conveying baffles, and both ends of each of the adsorption conveying panels are located within the conveying guide grooves.

[0010] In some embodiments, the adsorption conveying panel is provided with rollers at both ends, and each roller is located in the respective conveying guide groove to roll against the groove wall.

[0011] In some embodiments, the end face of the adsorption conveying panel facing the rotary conveyor belt is the inner end face, and anti-detachment wheels are provided at both ends of the inner end face. The width edge of the rotary conveyor belt is located between the anti-detachment wheels and the inner end face of the adsorption conveying panel.

[0012] In some embodiments, the end face of each of the adsorption conveying panels facing away from the rotary conveyor belt is the outer end face, and the outer end face is provided with a plurality of parallel and spaced protrusions, each of the protrusions extending along the conveying direction, and each adsorption hole is formed on each of the protrusions.

[0013] In some embodiments, the film cutting device further includes a support for mounting the film segment cutting assembly on the upper region of the belt conveyor assembly. The support is provided with a transverse component. The film segment cutting assembly has a film segment cutting position in the upper region of each of the adsorption conveyor panels and a clearance position outside the upper region. The transverse component can drive the film segment cutting assembly to switch between the film segment cutting position and the clearance position.

[0014] In some embodiments, the film segment cutting assembly includes a transverse frame, a connecting plate, and a plurality of cutting units connected to the bottom side of the connecting plate. Each of the cutting units is arranged sequentially along the conveying direction. The top side of the connecting plate is connected to the transverse frame. The transverse assembly switches the position of the film segment cutting assembly by driving the transverse frame. The transverse frame is also provided with a lifting drive, which is used to drive the connecting plate to rise and fall.

[0015] In some embodiments, the cutting unit includes a tool assembly frame and a plurality of cutting blades connected to the tool assembly frame, wherein each cutting blade is spaced apart along the width direction of the rotary conveyor belt and corresponds one-to-one with the position of each of the protrusions in each of the adsorption conveyor panels.

[0016] In some embodiments, the cutting unit further includes a cutting pressure plate for pressing each adhesive film onto the top surface of each of the protrusions when each of the cutting blades cuts each of the adhesive films.

[0017] In some embodiments, each of the cutting pressure plates is slidably connected to the cutter assembly frame via a telescopic rod, and a return spring is fitted on the telescopic rod between the cutter assembly frame and the cutting pressure plate. The return spring is used to ensure that the pressing surface of the cutting pressure plate is lower than the lowest point of each of the cutting blades when the cutting pressure plate is not in contact with the adsorption conveying panel.

[0018] The film cutting device of this utility model can adsorb each film strip on each adsorption conveyor panel and move in a rotary cycle along the conveying direction with the rotary conveyor belt. That is, it realizes the purpose of pulling each film strip from one end of the conveyor frame to the other end. At the same time, due to the 360° rotary cyclic traction conveying effect of the rotary conveyor belt, the adsorption conveyor panels can continuously pull the film strip without gaps. Combined with the cutting of the film segment cutting component, it realizes continuous cutting and feeding of film segments. There is no need for the traditional reciprocating motion of the belt puller to pull the film strip, which shortens the film strip pulling time and improves the production cycle. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the film cutting device in an embodiment of this utility model;

[0020] Figure 2 yes Figure 1 A three-dimensional structural diagram of the belt conveyor assembly in the diagram;

[0021] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0022] Figure 4 yes Figure 1 A three-dimensional structural diagram of the adsorption and delivery panel in the image;

[0023] Figure 5 yes Figure 1 A front view of the membrane segment cutting assembly (the transverse frame is omitted in the figure);

[0024] Figure 6 yes Figure 5 A three-dimensional structural diagram showing the positional relationship between the cutting unit and an adsorption conveying panel in the diagram.

[0025] Figure 7 yes Figure 6 Rear view;

[0026] Figure 8 yes Figure 6 Front view.

[0027] In the diagram: 1. Belt conveyor assembly; 11. Conveyor frame; 111. Conveyor baffle; 112. Conveyor guide trough; 12. Rotary conveyor belt; 121. Pulley; 13. Adsorption conveyor panel; 131. Roller; 132. Anti-detachment wheel; 133. Protrusion; 1331. Adsorption hole; 2. Film segment cutting assembly; 21. Connecting plate; 211. Hanging rod; 22. Cutting unit; 221. Tool assembly frame; 222. Cutting knife; 223. Cutting pressure plate; 224. Telescopic rod; 225. Return spring; 23. Transverse frame; 231. Lifting drive component; 3. Support; 31. Belt drive assembly; 32. Transverse guide rail. Detailed Implementation

[0028] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. In the drawings, for clarity, the thickness of regions and layers is exaggerated. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed descriptions will be omitted.

[0029] The described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a full understanding of embodiments of the present invention. However, those skilled in the art will recognize that the technical solutions of the present invention can be practiced without one or more of the specific details described, or other methods, components, materials, etc., can be employed. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring various aspects of the present invention.

[0030] The following example describes the film cutting device of this utility model. This example is only a part of the embodiments of this utility model, but the protection scope of this utility model is not limited thereto. All other embodiments obtained by those skilled in the art without inventive effort should be covered within the protection scope of this utility model.

[0031] See also Figures 1 to 8 As shown, according to an embodiment of the present invention, a film cutting device is provided, including a belt conveyor assembly 1 and a film segment cutting assembly 2. The belt conveyor assembly 1 includes a conveyor frame 11, a rotary conveyor belt 12, and a plurality of adsorption conveying panels 13 that can rotate synchronously with the rotary conveyor belt 12 and move along the conveying direction. See details below. Figure 3As shown, in a specific embodiment, the aforementioned rotary conveyor belt 12 has two belts, which are parallel and spaced apart and tensioned on two pulleys 121. The two pulleys 121 are spaced apart at both ends of the conveyor frame 11. It is understood that at least one of the pulleys 121 is driven by a corresponding rotary drive motor (not shown in the figure), and each membrane strip can be adsorbed onto the top surface of each adsorption conveying panel 13 (i.e., Figure 1 On the upper side (shown in the orientation), the membrane segment cutting assembly 2 is used to cut the membrane strip between two adjacent adsorption conveying panels 13 on the top surface of the rotary conveyor belt 11. It is understood that the aforementioned adsorption conveying panel 13 is provided with adsorption holes 1331 (described in detail below), which are specifically connected to the vacuum pipeline, thereby realizing the vacuum adsorption of each membrane strip by the adsorption conveying panel 13.

[0032] In this technical solution, each adsorption conveying panel 13 can adsorb each film strip and follow the rotary conveyor belt 12 to achieve rotary cyclic movement along the conveying direction. That is, it realizes the purpose of pulling each film strip from one end of the conveyor frame 11 to the other end. At the same time, due to the 360° rotary cyclic traction conveying effect of the rotary conveyor belt 12, the adsorption conveying panel 13 can achieve continuous pulling without gaps. Combined with the cutting of the film segment cutting component 2, continuous cutting and feeding of film segments is realized. There is no need for the traditional reciprocating motion of the pulling hand to pull the film strip, which shortens the film strip pulling time and improves the production cycle.

[0033] In some embodiments, the conveyor frame 11 has vertical walls (not indicated in the figure) spaced parallel to the conveying direction of the rotary conveyor belt 12, see details below. Figure 3 As shown, a conveying baffle 111 is provided on the inner wall surface of the vertical wall, and a conveying guide groove 112 is constructed on the conveying baffle 111, with both ends of each of the adsorption conveying panels 13 located in the conveying guide groove 112.

[0034] In this technical solution, by setting a conveying baffle 111 with a conveying guide groove 112 on the inner side wall of the two opposing vertical walls of the conveyor frame 11, the two ends of the width of the adsorption conveying panel 13 can be set in the corresponding conveying guide groove 112, thereby realizing the stable movement of each adsorption conveying panel 13 in the conveying direction and preventing the positional deviation of each adsorption conveying panel 13 from causing inaccurate subsequent cutting alignment.

[0035] In some embodiments, the adsorption conveying panel 13 is provided with rollers 131 at both ends, and each roller 131 is located in each of the conveying guide grooves 112 to roll against the groove wall of the conveying guide groove 112.

[0036] In this technical solution, rollers 131 are respectively set at both ends of the adsorption conveying panel 13 to achieve rolling connection between it and the conveying guide groove 112. This can reduce the friction between the adsorption conveying panel 13 and the conveying baffle 111, improve the smoothness of movement of each adsorption conveying panel 13, reduce the relative wear between the two, and improve the service life of each corresponding component.

[0037] In some embodiments, the end face of the adsorption conveying panel 13 facing the rotary conveyor belt 12 is the inner end face, and anti-detachment rollers 132 are provided at both ends of the inner end face (that is, at both ends of the width of the adsorption conveying panel 13). The width edge of the rotary conveyor belt 12 is located between the anti-detachment rollers 132 and the inner end face of the adsorption conveying panel 13.

[0038] In this technical solution, by further providing anti-detachment wheels 132 at both ends of the inner end face of the adsorption conveyor panel 13, the edge of the rotary conveyor belt 12 can be confined between the anti-detachment wheels 132 and the adsorption conveyor panel 13, thereby ensuring the positional reliability of each adsorption conveyor panel when rotating from the top side to the bottom side of the rotary conveyor belt 12.

[0039] In some embodiments, the end face of each adsorption conveying panel 13 facing away from the rotary conveyor belt 12 is the outer end face. The outer end face is provided with a plurality of parallel and spaced protrusions 133. Each protrusion 133 extends along the conveying direction, and each adsorption hole 1331 is formed on each protrusion 133. The aforementioned protrusions 133 can be a plurality of spaced protrusions in the length direction of the adsorption conveying panel 13 (that is, in the aforementioned conveying direction), or they can be a whole. This utility model does not make any particular limitation on them.

[0040] In this technical solution, by setting a protruding ridge 133 structure on the outer end face of the adsorption and conveying panel 13 to form a protruding support and adsorption for each membrane strip, it is possible to prevent contact and friction between each membrane strip and other structures on the adsorption and conveying panel 13 (such as the groove wall in the groove) during further transfer after each membrane strip is cut, thus ensuring smooth transfer of the membrane strip.

[0041] In some embodiments, the film cutting device further includes a support 3 for mounting the film segment cutting assembly 2 on the upper region of the belt conveyor assembly 1. The support 3 is provided with a transverse component. The film segment cutting assembly 2 has a film segment cutting position in the upper region of each of the adsorption conveyor panels 13 and a clearance position outside the upper region. The transverse component can drive the film segment cutting assembly 2 to switch between the film segment cutting position and the clearance position. In a specific embodiment, the aforementioned upper region is the rectangular region corresponding to the vertical upward extension of the outer edge of each of the adsorption conveyor panels 13, while the region outside the upper region is not within the aforementioned rectangular region. Objectively, any functional module capable of driving the film segment cutting component 2 to switch between the film segment cutting position and the clearance position can be used as the aforementioned transverse component. For example, it can be a multi-degree-of-freedom robotic arm. In a specific embodiment, the aforementioned transverse component includes transverse guide rails 32 located on the top surfaces of both ends of the aforementioned support 3 and a belt drive component 31 for driving the film segment cutting component 2 to reciprocate linearly in the guiding direction of the transverse guide rails 32. This structural combination has the advantage of being relatively simple in both structure and control.

[0042] In this technical solution, the membrane segment cutting component 2 can be driven to switch between the membrane segment cutting position and the clearance position, so that after the membrane segment is cut, each membrane segment can be transferred from the aforementioned adsorption and conveying panels 13 to another target position, such as the back of the battery cell, for fixed connection of the welding strip.

[0043] In some embodiments, the film segment cutting assembly 2 includes a transverse frame 23, a connecting plate 21, and a plurality of cutting units 22 connected to the bottom side of the connecting plate 21. Each of the cutting units 22 is arranged sequentially along the conveying direction. The top side of the connecting plate 21 is connected to the transverse frame 23. The transverse assembly switches the position of the film segment cutting assembly 2 by driving the transverse frame 23. The transverse frame 23 is also provided with a lifting drive 231 (e.g., a cylinder), which is used to drive the connecting plate 21 to rise and fall.

[0044] In this technical solution, the lifting and lowering of the connecting plate 21 is controlled by a lifting drive component 231, thereby realizing the synchronous lifting and lowering of multiple cutting units 22 on the bottom side of the connecting plate 21, which can greatly simplify the structural design and reduce the design and manufacturing costs.

[0045] In some embodiments, the cutting unit 22 includes a tool assembly frame 221 and a plurality of cutting blades 222 connected to the tool assembly frame 221. Each cutting blade 222 is spaced apart along the width direction of the rotary conveyor belt 12 and corresponds one-to-one with the gap position of each of the protrusions 133 of each of the adsorption conveying panels 13. It is understood that a cutting gap is formed between two adjacent adsorption conveying panels 13, and the cutting blades 222 of each of the aforementioned cutting units 22 correspond one-to-one with each cutting gap.

[0046] Unlike the integral cutting blade in the prior art, this invention provides a cutting blade 222 for each film strip within the same cutting unit 22, allowing for flexible selection and replacement of each cutting blade 222, significantly reducing the replacement cost after a certain cutting blade 222 is damaged.

[0047] In some embodiments, the cutting unit 22 further includes a cutting pressure plate 223, which is used to press each adhesive film onto the top surface of each of the protrusions 133 when each of the cutting blades 222 cuts each of the adhesive films, so as to ensure stable and smooth cutting of each film segment.

[0048] In some embodiments, each of the cutting pressure plates 223 is slidably connected to the cutter assembly frame 221 via a telescopic rod 224, and a return spring 225 is fitted on the telescopic rod 224 between the cutter assembly frame 221 and the cutting pressure plate 223. The return spring 225 is used to ensure that the pressing surface of the cutting pressure plate 223 is lower than the lowest point of each cutting blade 222 when the cutting pressure plate 223 is not in contact with the adsorption conveying panel 13. The cooperation between the aforementioned return spring 225 and the telescopic rod 224 enables each cutting pressure plate 223 to reliably and stably press each film strip in a flexible manner between each cutting blade 222 and the film strip. When the cutting unit 22 is controlled to rise after cutting, the restoring force of the return spring 225 enables each cutting pressure plate 223 to quickly return to the initial height, so as to facilitate the rapid entry into the next cutting cycle.

[0049] The working principle of the film cutting device of this utility model is further explained below:

[0050] The adsorption conveyor panel 13 in the belt conveyor assembly 1 adsorbs the film strips cut into strips. Under the action of the rotary conveyor belt 12, each adsorption conveyor panel 13 moves along the conveying direction until the film strips on each adsorption conveyor panel 13 are below the film segment cutting assembly 2 and reach the cutting position. The drive cylinder (i.e., the aforementioned lifting drive component 231) in the film segment cutting assembly 2 drives the cutting pressure plate 223 and the cutting blade 222 to move down. The cutting pressure plate 223 presses down on the film strips above the adsorption conveyor panel 13. The return spring 225 compresses the telescopic rod 224 to retract. The cutting blade 222 moves down to cut the pressed film strips into segments, leaving the remaining film strips below the film segment cutting assembly 223. One less adsorption conveying panel 13 adsorbs the subsequent continuous film strips. Then, the drive cylinder drives the cutting knife 222 and the cutting pressure plate 223 to move upward until the cutting pressure plate 223 separates from the adsorption conveying panel 13. The entire film segment cutting assembly 2 moves away from the top of the adsorption conveying panel 13 (i.e., the aforementioned upper area) through the slide rail (i.e. the aforementioned transverse guide rail 32) on the transverse frame 23, so as to facilitate the transport out of the cut film segments. After the film segments are transported out, the film segment cutting assembly 2 resets. The adsorption conveying panel 13 adsorbing the continuous film strips moves with the rotary conveyor belt 12 to the bottom of the film segment cutting assembly 2 for the next film segment cutting.

[0051] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0052] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A film cutting device, characterized in that, The device includes a belt conveyor assembly (1) and a film segment cutting assembly (2). The belt conveyor assembly (1) includes a conveyor frame (11), a rotary conveyor belt (12), and a plurality of adsorption conveyor panels (13) that can rotate synchronously with the rotary conveyor belt (12) and move along the conveying direction. Each film strip can be adsorbed onto the top surface of each adsorption conveyor panel (13). The film segment cutting assembly (2) is used to cut the film strip between two adjacent adsorption conveyor panels (13) on the top surface of the rotary conveyor belt (12).

2. The film cutting device according to claim 1, characterized in that, The conveyor frame (11) has vertical walls that are parallel to and spaced apart from the conveying direction of the rotary conveyor belt (12). A conveying baffle (111) is provided on the inner wall of the vertical wall. A conveying guide groove (112) is constructed on the conveying baffle (111), and both ends of each of the adsorption conveying panels (13) are located in the conveying guide groove (112).

3. The film cutting device according to claim 2, characterized in that, The adsorption conveying panel (13) is provided with rollers (131) at both ends, and each roller (131) is located in each of the conveying guide grooves (112) to roll against the groove wall of the conveying guide groove (112).

4. The film cutting device according to claim 2, characterized in that, The end face of the adsorption conveying panel (13) facing the rotary conveyor belt (12) is the inner end face. Anti-detachment wheels (132) are provided at both ends of the inner end face. The width edge of the rotary conveyor belt (12) is located between the anti-detachment wheels (132) and the inner end face of the adsorption conveying panel (13).

5. The film cutting device according to claim 1, characterized in that, The end face of each adsorption conveying panel (13) facing away from the rotary conveyor belt (12) is the outer end face. Multiple parallel and spaced protrusions (133) are provided on the outer end face. Each protrusion (133) extends along the conveying direction, and each adsorption hole (1331) is formed on each protrusion (133).

6. The film cutting device according to claim 5, characterized in that, It also includes a support (3) for mounting the membrane segment cutting assembly (2) on the upper region of the belt conveyor assembly (1). The support (3) is provided with a transverse component. The membrane segment cutting assembly (2) has a membrane segment cutting position in the upper region of each of the adsorption conveyor panels (13) and a clearance position outside the upper region. The transverse component can drive the membrane segment cutting assembly (2) to switch between the membrane segment cutting position and the clearance position.

7. The film cutting device according to claim 6, characterized in that, The film segment cutting assembly (2) includes a transverse frame (23), a connecting plate (21), and a plurality of cutting units (22) connected to the bottom side of the connecting plate (21). Each cutting unit (22) is arranged sequentially along the conveying direction. The top side of the connecting plate (21) is connected to the transverse frame (23). The transverse assembly realizes the position switching of the film segment cutting assembly (2) by driving the transverse frame (23). The transverse frame (23) is also provided with a lifting drive (231), which is used to drive the connecting plate (21) to rise and fall.

8. The film cutting device according to claim 7, characterized in that, The cutting unit (22) includes a tool assembly frame (221) and a plurality of cutting blades (222) connected to the tool assembly frame (221). Each cutting blade (222) is spaced apart along the width direction of the rotary conveyor belt (12) and corresponds one-to-one with the gap position of each of the protrusions (133) on each of the adsorption conveyor panels (13).

9. The film cutting device according to claim 8, characterized in that, The cutting unit (22) further includes a cutting pressure plate (223), which is used to press each adhesive film onto the top surface of each of the protrusions (133) when each of the cutting blades (222) cuts each of the adhesive films.

10. The film cutting device according to claim 9, characterized in that, Each of the cutting pressure plates (223) is slidably connected to the knife assembly frame (221) via a telescopic rod (224), and a return spring (225) is fitted on the telescopic rod (224) between the knife assembly frame (221) and the cutting pressure plate (223). The return spring (225) is used to ensure that the pressing surface of the cutting pressure plate (223) is lower than the lowest point of each of the cutting blades (222) when the cutting pressure plate (223) is not in contact with the adsorption conveying panel (13).

Images