Film stretching mechanism, film pulling device and film cutting machine

Abstract

The utility model relates to a film stretching mechanism, a film pulling device and a film cutting machine. The film stretching mechanism comprises a clamp mounting component, a fixed clamp, a first movable clamp, a second movable clamp, a first movable driving component and a second movable driving component. The first movable clamp and the second movable clamp are respectively movably connected to the clamp mounting component, and the fixed clamp is located between the first movable clamp and the second movable clamp. When pulling the film, the first movable clamp and the second movable clamp first clamp the two ends of the film, and under the drive of the first movable driving component and the second movable driving component, the first movable clamp and the second movable clamp stretch the film to the two ends. At this time, the front end of the film is no longer wrinkled, and then the fixed clamp clamps the film to completely clamp the front of the film to prevent the film from falling, thereby avoiding the problem of wrinkles during the film pulling out and placement and subsequent poor lamination.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, in particular to a film stretching mechanism, a film pulling device and a film cutting machine. Background Art

[0002] When producing busbar-less solar cells using the 0BB process, the adhesive film is easy to penetrate between the welding ribbon and the grid line during the lamination process, forming an insulating layer, which affects the EL, power and reliability of the photovoltaic module. For this reason, a low-weight adhesive film weighing less than 200 grams is usually set between the conventional adhesive film weighing more than 300 grams and the battery string. Since the low-weight adhesive film has a high degree of cross-linking and low fluidity when heated, it can effectively prevent the adhesive film from penetrating between the welding ribbon and the grid line and affecting the EL, power reliability and other problems of the module.

[0003] However, due to the low weight of the film, the film is prone to wrinkles during the stretching process of the cutting machine, and the wrinkles are mainly concentrated on the short sides. In the subsequent lamination process, the bubbles at the wrinkled position of the film cannot be discharged, and excessive accumulation of the film will cause the battery cell to crack. Utility Model Content

[0004] Based on this, it is necessary to provide a film stretching mechanism, a film pulling device and a film cutting machine to solve the problem that wrinkles are easily generated during the stretching process of low-weight films.

[0005] The first aspect of the utility model is to provide a film stretching mechanism, the scheme is as follows:

[0006] A film stretching mechanism comprises a clamp mounting component, a first movable clamp, a second movable clamp, a fixed clamp, a first movable driving component and a second movable driving component; the first movable clamp and the second movable clamp are respectively movably connected to the clamp mounting component and are arranged opposite to each other in a first direction, the first movable driving component is connected to the first movable clamp to drive the first movable clamp to move along the first direction, the second movable driving component is connected to the second movable clamp to drive the second movable clamp to move along the first direction, the fixed clamp is connected to the clamp mounting component and is located between the first movable clamp and the second movable clamp.

[0007] In one embodiment, at least one of the first movable jaw and the second movable jaw includes a first telescopic drive and a first clamp, wherein the first telescopic drive is movably connected to the jaw mounting component, and the first telescopic drive is connected to the first clamp for driving the first clamp to extend or retract in a second direction, and the second direction is perpendicular to the first direction.

[0008] In one embodiment, the fixed clamp includes a second telescopic driver and a second clamp, wherein the second telescopic driver is movably connected to the clamp mounting component, and the second telescopic driver is connected to the second clamp for driving the second clamp to extend or retract in a second direction.

[0009] In one embodiment, the first telescopic drive is a telescopic cylinder or a motor screw transmission assembly.

[0010] In one embodiment, the second telescopic actuator is a telescopic cylinder or a motor screw transmission assembly.

[0011] In one embodiment, the film stretching mechanism also includes a movable connecting component, which includes a movable guide rail, a first slider and a second slider. The movable guide rail is arranged on the clamp mounting component, and the first slider and the second slider are respectively slidably matched with the movable guide rail. The first movable driving component is connected to the first movable clamp through the first slider, and the second movable driving component is connected to the second movable clamp through the second slider.

[0012] In one embodiment, there are multiple fixed jaws, and the multiple fixed jaws are arranged along the first direction.

[0013] In one embodiment, the number of the fixed clamps is 2 to 10.

[0014] In one embodiment, the first moving driving component is a telescopic cylinder or a motor screw transmission assembly.

[0015] The second moving driving component is a telescopic cylinder or a motor screw transmission assembly.

[0016] The second aspect of the utility model is to provide a film pulling device, the scheme is as follows:

[0017] A film pulling device comprises the film stretching mechanism and transfer mechanism described in any of the above embodiments, wherein the film stretching mechanism has at least two relatively arranged ones, and the transfer mechanism is connected to the clamping jaw mounting component of the film stretching mechanism to drive the film stretching mechanism to move.

[0018] The third aspect of the utility model is to provide a film cutting machine, the scheme is as follows:

[0019] A film cutting machine comprises the film pulling device and a cutting device, wherein the cutting device is used for cutting the film pulled by the film pulling device.

[0020] Compared with the traditional solution, the above-mentioned film stretching mechanism, film pulling device and film cutting machine have the following beneficial effects:

[0021] The above-mentioned film stretching mechanism is provided with a first movable jaw and a second movable jaw relative to each other and a fixed jaw therebetween on the jaw mounting component. When pulling the film, the first movable jaw and the second movable jaw first clamp the two ends of the film, and under the drive of the first movable driving component and the second movable driving component, the first movable jaw and the second movable jaw stretch the film to the two ends. At this time, the film at the front end is no longer wrinkled. Subsequently, the fixed jaw between the first movable jaw and the second movable jaw clamps the film to completely clamp the front of the film to prevent the film from falling. In this way, the problem of wrinkles in the process of pulling out and placing the film is avoided.

[0022] The above-mentioned film pulling device and film cutting machine have the film stretching mechanism of any of the above-mentioned embodiments, and thus have corresponding technical features and can obtain corresponding beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural schematic diagram of a film stretching mechanism according to an embodiment;

[0024] Figure 2 for Figure 1 A partial schematic diagram of the film stretching mechanism shown.

[0025] Description of reference numerals:

[0026] 100, film stretching mechanism; 110, jaw mounting component; 120, first movable jaw; 130, second movable jaw; 140, fixed jaw; 150, first movable driving component; 160, second movable driving component; 171, movable guide rail; 172, first slider; 173, second slider; 131, first telescopic driver; 132, first clamper; 141, second telescopic driver; 142, second clamper. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] In addition, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] like Figure 1 As shown, for the convenience of explanation, the "first direction" and the "second direction" are defined as general directions rather than specific directions. For example, the "first direction" is a horizontal direction, and the "second direction" is another horizontal direction perpendicular to the "first direction", but it is not limited to this.

[0033] like Figure 1 and Figure 2As shown, the film stretching mechanism 100 according to an embodiment of the present invention includes a clamping jaw installation component 110 , a first movable clamping jaw 120 , a second movable clamping jaw 130 , a fixed clamping jaw 140 , a first movable driving component 150 and a second movable driving component 160 .

[0034] The first movable jaw 120 and the second movable jaw 130 are respectively movably connected to the jaw mounting component 110 and are arranged opposite to each other in a first direction. The first movable driving component 150 is connected to the first movable jaw 120 to drive the first movable jaw 120 to move along the first direction. The second movable driving component 160 is connected to the second movable jaw 130 to drive the second movable jaw 130 to move along the first direction. The fixed jaw 140 is connected to the jaw mounting component 110 and is located between the first movable jaw 120 and the second movable jaw 130.

[0035] The above-mentioned film stretching mechanism 100 is provided with a first movable jaw 120 and a second movable jaw 130 relative to each other and a fixed jaw 140 therebetween on the jaw mounting component 110. When pulling the film, the first movable jaw 120 and the second movable jaw 130 first clamp the two ends of the film. Driven by the first movable driving component 150 and the second movable driving component 160, the first movable jaw 120 and the second movable jaw 130 stretch the film toward both ends. At this time, the front end of the film is no longer wrinkled. Subsequently, the fixed jaw 140 between the first movable jaw 120 and the second movable jaw 130 clamps the film and completely clamps the front of the film to prevent the film from falling. In this way, wrinkles in the process of pulling out and placing the film and the subsequent poor lamination are avoided.

[0036] The clamping jaw installation component 110 is generally a strip-shaped structure extending along the first direction, so that the first movable clamping jaw 120, the second movable clamping jaw 130 and the fixed clamping jaw 140 are arranged in the first direction. The clamping jaw installation component 110 can be connected to the transfer device, so that the transfer device can drive the film stretching mechanism 100 to move as a whole, so as to pull the film out and lay it on the glass or battery sheet.

[0037] In one example, the film stretching mechanism 100 further includes a movable connecting component, which includes a movable guide rail 171, a first slider 172, and a second slider 173. The movable guide rail 171 is arranged on the clamp mounting component 110, and the movable guide rail 171 extends along the first direction. The first slider 172 and the second slider 173 are respectively slidably matched with the movable guide rail 171. The first movable clamp 120 is arranged on the first slider 172, and can move along the movable guide rail 171 with the first slider 172, and the first movable driving component 150 is connected to the first movable clamp 120 through the first slider 172. The second movable clamp 130 is arranged on the second slider 173, and can move along the movable guide rail 171 with the second slider 173, and the second movable driving component 160 is connected to the second movable clamp 130 through the second slider 173.

[0038] In the specific example shown in the figure, the first mobile driving component 150 is a telescopic cylinder. In this example, when the first mobile driving component 150 drives the first mobile clamping jaw 120 to extend, the first mobile clamping jaw 120 moves in a direction away from the second mobile clamping jaw 130. On the contrary, when the first mobile driving component 150 drives the first mobile clamping jaw 120 to retract, the first mobile clamping jaw 120 moves in a direction close to the second mobile clamping jaw 130.

[0039] It can be understood that in other examples, the first movable driving component 150 can also be moved closer to the second movable clamping jaw 130 when the first movable clamping jaw 120 is extended, and moved away from the second movable clamping jaw 130 when the first movable clamping jaw 120 is retracted.

[0040] It can be understood that in other examples, the first movable driving component 150 is not limited to being a telescopic cylinder, as long as it can drive the first movable clamping jaw 120 to extend or retract.

[0041] For example, in another example, the first moving driving component 150 is a motor screw transmission assembly. The motor screw transmission assembly can flexibly adjust the moving distance of the first moving clamp 120 according to the length of the film. More specifically, the motor screw transmission assembly includes a driving motor, a screw and a ball nut seat, the driving motor is connected to the screw, the screw cooperates with the ball nut seat, and the ball nut seat is connected to the first moving clamp 120. In this way, the first moving clamp 120 can be driven to move by driving the screw to rotate through the driving motor.

[0042] Likewise, the second mobile driving component 160 may also be a telescopic cylinder, a motor screw transmission assembly, or the like.

[0043] like Figure 2As shown, in one example, at least one of the first movable clamp 120 and the second movable clamp 130 includes a first telescopic driver 131 and a first clamp 132. The first telescopic driver 131 is movably connected to the clamp mounting component 110, and the first telescopic driver 131 is connected to the first clamp 132 to drive the first clamp 132 to extend or retract in a second direction. The second direction is perpendicular to the first direction.

[0044] The first telescopic driver 131 may be a telescopic cylinder, a motor screw transmission assembly, or the like.

[0045] like Figure 1 As shown, in one example, the fixed clamp 140 includes a second telescopic driver 141 and a second clamp 142. The second telescopic driver 141 is movably connected to the clamp mounting component 110, and the second telescopic driver 141 is connected to the second clamp 142 to drive the second clamp 142 to extend or retract in the second direction.

[0046] The second telescopic driver 141 may be a telescopic cylinder, a motor screw transmission assembly, or the like.

[0047] Optionally, the number of the fixed jaws 140 is not limited to only one, and there may be multiple fixed jaws 140. For example, the number of the fixed jaws 140 is 2 to 10, specifically 2, 3, 4, 5, 6, 7, 8, 9, and 10. Figure 1 In the specific example shown, the number of the fixed jaws 140 is 6. When there are multiple fixed jaws 140, the multiple fixed jaws 140 are arranged along the first direction. The multiple fixed jaws 140 are all located between the first movable jaw 120 and the second movable jaw 130.

[0048] Furthermore, the utility model also provides a film pulling device.

[0049] The film pulling device of one embodiment includes the above-mentioned film stretching mechanism 100 and the transfer mechanism. The film pulling device has at least two film stretching mechanisms 100 arranged opposite to each other. The transfer mechanism is connected to the clamping jaw mounting component 110 of the film stretching mechanism 100 to drive the film stretching mechanism 100 to move.

[0050] When the film pulling device pulls the film, the first movable jaw 120 and the second movable jaw 130 of one of the film stretching mechanisms 100 pull the front end of the film so that the front end of the film is no longer wrinkled, and the fixed jaw 140 clamps the film to completely clamp the front of the film to prevent the film from falling. The film stretching mechanism 100 moves backward and pulls out the film under the drive of the transfer mechanism, and the other film stretching mechanism 100 clamps and stretches the rear end of the film, and spreads the film flat on the glass or battery string under the drive of the transfer mechanism. In this way, the problem of wrinkles in the process of pulling out and placing the film and the subsequent poor lamination is avoided.

[0051] Furthermore, the utility model also provides a film cutting machine.

[0052] A film cutting machine according to an embodiment includes the above-mentioned film pulling device and a cutting device, wherein the cutting device is used to cut the film pulled by the film pulling device.

[0053] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims, and the description can be used to interpret the content of the claims.

Claims

1. A film stretching mechanism (100), characterized in that: The invention comprises a clamping jaw mounting component (110), a first movable clamping jaw (120), a second movable clamping jaw (130), a fixed clamping jaw (140), a first movable driving component (150) and a second movable driving component (160); the first movable clamping jaw (120) and the second movable clamping jaw (130) are respectively movably connected to the clamping jaw mounting component (110) and are arranged relative to each other in a first direction; the first movable driving component (150) is connected to the first movable clamping jaw (120) to drive the first movable clamping jaw (120) to move along the first direction; the second movable driving component (160) is connected to the second movable clamping jaw (130) to drive the second movable clamping jaw (130) to move along the first direction; the fixed clamping jaw (140) is connected to the clamping jaw mounting component (110); and the fixed clamping jaw (140) is located between the first movable clamping jaw (120) and the second movable clamping jaw (130).

2. The film stretching mechanism (100) according to claim 1, characterized in that: At least one of the first movable clamp (120) and the second movable clamp (130) comprises a first telescopic driver (131) and a first clamp (132), wherein the first telescopic driver (131) is movably connected to the clamp mounting component (110), and the first telescopic driver (131) is connected to the first clamp (132) for driving the first clamp (132) to extend or retract in a second direction, wherein the second direction is perpendicular to the first direction.

3. The film stretching mechanism (100) according to claim 2, characterized in that: The fixed clamp (140) comprises a second telescopic driver (141) and a second clamp (142), wherein the second telescopic driver (141) is movably connected to the clamp mounting component (110), and the second telescopic driver (141) is connected to the second clamp (142) for driving the second clamp (142) to extend or retract in the second direction.

4. The film stretching mechanism (100) according to claim 3, characterized in that: The first telescopic drive (131) is a telescopic cylinder or a motor screw transmission assembly; and / or The second telescopic driver (141) is a telescopic cylinder or a motor screw transmission assembly.

5. The film stretching mechanism (100) according to claim 1, characterized in that: The film stretching mechanism (100) further comprises a movable connecting component, the movable connecting component comprising a movable guide rail (171), a first slider (172) and a second slider (173); the movable guide rail (171) is arranged on the clamping jaw mounting component (110); the first slider (172) and the second slider (173) are respectively slidably matched with the movable guide rail (171); the first movable driving component (150) is connected to the first movable clamping jaw (120) via the first slider (172); and the second movable driving component (160) is connected to the second movable clamping jaw (130) via the second slider (173).

6. The film stretching mechanism (100) according to any one of claims 1 to 5, characterized in that: There are multiple fixed clamping jaws (140), and the multiple fixed clamping jaws (140) are arranged along the first direction.

7. The film stretching mechanism (100) according to claim 6, characterized in that: The number of the fixed clamping jaws (140) ranges from 2 to 10.

8. The film stretching mechanism (100) according to claim 1, characterized in that: The first moving driving component (150) is a telescopic cylinder or a motor screw transmission assembly; and / or The second moving drive component (160) is a telescopic cylinder or a motor screw transmission assembly.

9. A film pulling device, characterized in that: It comprises the adhesive film stretching mechanism (100) and the transfer mechanism as described in any one of claims 1 to 8, wherein the adhesive film stretching mechanism (100) has at least two relatively arranged ones, and the transfer mechanism is connected to the clamping jaw mounting component (110) of the adhesive film stretching mechanism (100) to drive the adhesive film stretching mechanism (100) to move.

10. A film cutting machine, characterized in that: It comprises the adhesive film pulling device as claimed in claim 9 and a cutting device, wherein the cutting device is used to cut the adhesive film pulled by the adhesive film pulling device.

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