Limiting device of adhesive tape and edge sealing system of photovoltaic module

Abstract

The utility model belongs to the technical field of production of photovoltaic modules, and particularly relates to an adhesive tape limiting device and an edge sealing system of a photovoltaic module. The I-shaped grooved wheel is rotatably arranged, an annular groove is formed in the I-shaped grooved wheel in the circumferential direction of the outer circumferential wall of the I-shaped grooved wheel, and the annular groove comprises a groove bottom wall and two groove side walls; the check block is located on the radial side of the I-shaped grooved wheel and can stretch into the annular groove, so that a gap allowing the adhesive tape to penetrate through is reserved between the check block and the groove bottom wall, and the check block is matched with the groove bottom wall to limit the adhesive tape in the thickness direction of the adhesive tape. According to the limiting device, the I-shaped grooved wheel and the check block extending into the annular groove are used for limiting the adhesive tape, the two groove side walls of the annular groove can limit the adhesive tape to move in the width direction of the annular groove, the gap between the check block and the groove bottom wall can limit the adhesive tape to move in the thickness direction of the adhesive tape, and the movement range of the adhesive tape is small; the problem of adhesive tape deviation can be effectively solved, and then the adhesive tape pasting accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of the production of photovoltaic modules, in particular to a limiting device for a tape and an edge sealing system for a photovoltaic module. Background Art

[0002] The PO film is one of the important components in a photovoltaic backplane, usually made of PVDF (Polyvinylidene fluoride) material. Its property of resisting ultraviolet aging has an important impact on the overall performance of the backplane. During the production process of photovoltaic cells, the semi-finished components with uncrosslinked PO film need to be edge-sealed before lamination to prevent the glue from overflowing due to the high-temperature melting of the PO film during lamination of the semi-finished components, which may lead to uneven thickness of the laminated photovoltaic module. During edge-sealing, a sealing machine is usually used to automatically wrap the tape around the edges of the double glass of the semi-finished component to prevent the PO film from melting and overflowing.

[0003] Since the tape is prone to deviation during transportation, resulting in misalignment of edge-sealing, workpieces are usually used to limit the tape in the prior art. The existing workpieces usually include two groups of parallel I-shaped grooved wheels, and a closed space can be formed between the two groups of I-shaped grooved wheels to limit the tape. However, the volume of the closed space formed by the two groups of I-shaped grooved wheels is relatively large, and the tape has a large range of movement in the closed space. The limiting effect of the closed space on the tape is poor, resulting in poor accuracy of tape sticking. Summary of the Utility Model

[0004] Based on this, the utility model provides a limiting device for a tape and an edge-sealing system for a photovoltaic module to improve the problem of poor accuracy of tape bonding.

[0005] According to an embodiment of the utility model, in a first aspect, a limiting device for a tape is provided, including an I-shaped grooved wheel and a stop block;

[0006] The I-shaped grooved wheel is rotatably arranged, and an annular groove is formed along the circumferential direction of the outer peripheral wall of the I-shaped grooved wheel. The annular groove includes a groove bottom wall and two groove side walls, and the two groove side walls are used to limit the tape in the width direction of the tape;

[0007] The stop block is located on one side in the radial direction of the I-shaped grooved wheel, and the stop block can be movably inserted into the annular groove so that a gap is left between the stop block and the groove bottom wall for the tape to pass through, and the gap is used to limit the tape in the thickness direction of the tape.

[0008] In some embodiments, the stop block can rotate relative to the I-shaped groove wheel under the action of external force, and the center distances between the side walls of the stop block and the rotation center line of the stop block are different. By rotating the stop block, the side wall with a shorter center distance can be selected to face the I-shaped groove wheel, or the side wall with a longer center distance can be selected to face the I-shaped groove wheel.

[0009] In some embodiments, the stopper includes an arc side wall and a plane side wall, the center distance of the arc side wall is greater than the center distance of the plane side wall, and the arc side wall extends into the annular groove to form the gap for the tape to pass through.

[0010] In some embodiments, the stopper is connected to the base via a connecting frame; the connecting frame includes a first bracket and two second brackets, the first bracket is arranged on the base and is parallel to the axial direction of the I-shaped groove wheel, and the two second brackets are perpendicularly arranged on the side of the first bracket facing the I-shaped groove wheel, and the stopper is rotatably arranged between the two second brackets.

[0011] In some embodiments, the block is provided with a through hole along its axial direction, and the through hole passes through both end surfaces of the block; protrusions are formed on the two second brackets, and the protrusions are correspondingly penetrated into the two ends of the through hole to connect the block.

[0012] In some embodiments, the stopper may be moved closer to or farther away from the I-shaped groove wheel along the radial direction of the I-shaped groove wheel to adjust the distance between the stopper and the I-shaped groove wheel.

[0013] In some embodiments, the base is provided with a strip groove along the radial direction of the I-shaped groove wheel, and the first bracket is arranged in the strip groove.

[0014] In some embodiments, the device further includes an optical axis with one end fixed to the base, and the I-shaped groove wheel is rotatably mounted on the optical axis via a bearing.

[0015] According to an embodiment of the utility model, a second aspect provides an edge sealing system for a photovoltaic module, comprising a photovoltaic module feeding device and a chuck, a guide device, a limit device, a pre-kneading propulsion device and a lubrication brushing device arranged in sequence;

[0016] The chuck can be rotatably arranged to place the tape roll and release the tape; the guide device includes a guide wheel for guiding the tape; the pre-kneading and pushing device is used to pre-knead and deform the tape, and push the deformed tape to the edge to be sealed of the photovoltaic module; the lubricating brushing device is used to apply lubricating liquid on the tape; the photovoltaic module feeding device is used to transport the photovoltaic module to the desired position;

[0017] The limiting device allows the adhesive tape passing through the guiding device to penetrate into the gap between the stopper and the bottom wall of the groove.

[0018] In some embodiments, the guide wheels of the guiding device, the I-grooved wheels of the limiting device, the pre-kneading propulsion device, and the lubricating and painting device are located on the same side of the tape, and the photovoltaic module feeding device is arranged on the other side of the tape corresponding to the pre-kneading propulsion device and the lubricating and painting device.

[0019] The limiting device of the present utility model uses an I-grooved wheel and a stopper extending into the annular groove to limit the tape. The two groove side walls of the annular groove can limit the movement of the tape in its width direction, and the gap between the stopper and the groove bottom wall can limit the movement of the tape in its thickness direction. The movement range of the tape is small, which can effectively improve the problem of tape deviation, and further improve the accuracy of tape pasting. Description of the Drawings

[0020] Figure 1 is an axonometric structural schematic diagram of the limiting device of this embodiment;

[0021] Figure 2 is a front view structural schematic diagram of the limiting device of this embodiment;

[0022] Figure 3 is Figure 2 a sectional structural schematic diagram at N-N in

[0023] Figure 4 is a structural schematic diagram of the edge sealing system of the photovoltaic module.

[0024] In the figure: base 10; strip groove 11; optical axis 20; I-grooved wheel 30; annular groove 31; groove bottom wall 32; groove side wall 33; connecting frame 40; first bracket 41; second bracket 42; protruding part 43; stopper 50; through hole 51; chuck 60; guiding device 61; pre-kneading propulsion device 62; lubricating and painting device 63; photovoltaic module feeding device 64; tape roll 70. Detailed Embodiments

[0025] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0026] The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limiting conditions under which the present utility model can be implemented. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope that the technical content disclosed by the present utility model can cover.

[0027] The orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "middle", "longitudinal", "lateral", "horizontal", "inner", "outer", "radial", "circumferential", etc. cited in this specification is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of simplified description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0028] As Figure 1 and Figure 2 shown, this embodiment provides a limiting device for a tape. The limiting device includes an I-grooved pulley 30 and a stopper 50. The I-grooved pulley 30 is provided with an annular groove 31 along the circumferential direction of its outer peripheral wall. The annular groove 31 includes a groove bottom wall 32 and two groove side walls 33 arranged at intervals along the axial direction of the I-grooved pulley 30. The tape can enter the annular groove 31, and the two groove side walls 33 of the annular groove 31 can limit the movement of the tape in its width direction to limit the tape in the width direction of the tape. The distance between the two groove side walls 33 (the width of the annular groove 31) is the moving range of the tape in its width direction.

[0029] The stopper 50 of this embodiment is located on one side in the radial direction of the I-grooved pulley 30. The stopper 50 can movably extend into the annular groove 31 and has a gap with the groove bottom wall 32 of the annular groove 31. This gap allows the tape to pass through between the stopper 50 and the I-grooved pulley 30. The stopper 50 and the groove bottom wall 32 of the annular groove 31 can cooperate to limit the movement of the tape in its thickness direction to limit the tape in the thickness direction of the tape and prevent the tape from disengaging from the notch of the annular groove 31. The distance between the stopper 50 and the groove bottom wall 32 is the moving range of the tape in its thickness direction. It should be noted that the stopper 50 of this embodiment can movably extend into the annular groove 31 specifically means that the dimension of the stopper 50 along the width direction of the annular groove 31 is smaller than the width of the annular groove 31. After the stopper 50 extends into the annular groove 31, it does not interfere with the I-grooved pulley 30, and the stopper 50 can move and rotate relative to the I-grooved pulley 30.

[0030] The limiting device of this embodiment uses the I-grooved pulley 30 and the stopper 50 extending into the annular groove 31 to limit the tape. The moving ranges of the tape in both its width direction and thickness direction are limited, and the moving range of the tape is small, which can effectively improve the problem of tape deviation and thus improve the accuracy of tape pasting.

[0031] The I-shaped grooved pulley 30 of this embodiment is preferably rotatably sleeved on the optical axis 20 through a bearing. The optical axis 20 is fixedly arranged on the base 10, so that the I-shaped grooved pulley 30 can rotate relative to the base 10. In some embodiments, it can be selected to fixedly connect the I-shaped grooved pulley 30 with the optical axis 20 and rotatably connect the optical axis 20 with the base 10. It should be noted that the rotatable manner of the I-shaped grooved pulley 30 can select other existing technologies according to requirements, which will not be elaborated in this embodiment.

[0032] The stopper 50 of this embodiment can rotate relative to the I-shaped grooved pulley 30 under the action of an external force. The center distance between the side wall of the stopper 50 and the rotation center line of the stopper is different in size. By rotating the stopper 50, it can be selected to make the side wall with a shorter center distance face the I-shaped grooved pulley 30, or make the side wall with a longer center distance face the I-shaped grooved pulley 30. It should be noted that the center distance in this embodiment specifically refers to the distance between the side wall of the stopper and the rotation center line of the stopper. The center distance of a part of the side wall of the stopper is longer, and the center distance of a part of the side wall is shorter. The specific size of the center distance can be set according to actual requirements.

[0033] When it is necessary to place the tape between the stopper 50 and the I-shaped grooved pulley 30, make the side wall of the stopper 50 with a shorter center distance face the I-shaped grooved pulley 30, so that there is a larger distance between the stopper 50 and the I-shaped grooved pulley 30 to facilitate the placement of the tape; when it is necessary to limit the tape, make the side wall of the stopper 50 with a longer center distance face the I-shaped grooved pulley 30, so that there is a smaller gap between the stopper 50 and the I-shaped grooved pulley 30 to limit the movement range of the tape.

[0034] The stopper 50 of this embodiment preferably specifically includes an arc side wall and a flat side wall, so that the cross-section of the stopper 50 is roughly semi-circular. The center distance of the arc side wall is greater than that of the flat side wall, and the arc side wall extends into the annular groove 31 to form a gap for the tape to pass through. The part of the arc side wall extending into the annular groove 31 has a smooth surface, which helps the tape to smoothly pass through the gap between the stopper 50 and the bottom wall 32 of the groove. It should be noted that the shape of the stopper 50 can be adaptively adjusted according to requirements, which will not be elaborated in this embodiment.

[0035] The stopper 50 of this embodiment is connected to the base 10 through a connecting frame 40. The connecting frame 40 preferably has an F shape, and specifically includes a first bracket 41 and two second brackets 42. The first bracket 41 is arranged on the base 10 and is parallel to the axial direction of the I-shaped grooved pulley 30. The two second brackets 42 are perpendicularly arranged on the side of the first bracket 41 facing the I-shaped grooved pulley 30. The stopper 50 is arranged between the two second brackets 42. The structure of this connecting frame 40 is simple and convenient for connecting the base 10 and the stopper 50. In some embodiments, the shape of the connecting frame 40 can be adaptively adjusted according to actual requirements, which will not be elaborated in this embodiment.

[0036] As Figure 3As shown, in this embodiment, a through hole 51 is preferably opened along the axial direction of the stopper 50, and the through hole 51 passes through the two end surfaces of the stopper 50. The two second brackets 42 of the connecting frame 40 are formed with protrusions 43, and the protrusions 43 are correspondingly penetrated into the two ends of the through hole 51, so that the stopper 50 can be installed between the two second brackets 42, and its structure is simple and easy to install. It should be noted that the stopper 50 and the connecting frame 40 can also adopt other conventional connection methods, which will not be repeated in this embodiment.

[0037] The stopper 50 of this embodiment can be moved closer to or farther away from the I-shaped groove wheel 30 along the radial direction of the I-shaped groove wheel 30 to adjust the distance between the stopper 50 and the I-shaped groove wheel 30, and then adjust the gap between the stopper 50 and the groove bottom wall 32 of the annular groove 31, so that the gap can meet the requirements of tapes of different thicknesses. When the tape needs to be replaced, the stopper 50 can be adjusted to leave the annular groove 31 to facilitate the placement of the tape into the annular groove 31.

[0038] The base 10 of this embodiment is provided with a strip groove 11 along the radial direction of the I-shaped groove wheel 30, and the first bracket 41 of the connecting frame 40 is arranged in the strip groove 11. By adjusting the position of the connecting frame 40 in the strip groove 11, the spacing between the stopper 50 and the I-shaped groove wheel 30 can be adjusted. In some embodiments, the stopper 50 can be movably connected to the connecting frame 40, so that the stopper 50 can move relative to the connecting frame 40. It should be noted that the movable manner of the stopper 50 can select other existing technologies according to needs, and this embodiment will not be repeated.

[0039] See Figure 4 The present embodiment also provides an edge sealing system for a photovoltaic module, including a chuck 60, a guide device 61, any of the above-mentioned limiting devices, a pre-kneading propulsion device 62, a lubricating brushing device 63 and a photovoltaic module feeding device 64. The chuck 60 can be rotatably arranged, and the chuck 60 is used to place the tape roll 70 and release the tape. The guide device 61 includes a guide wheel for guiding the tape. The pre-kneading propulsion device 62 is used to pre-pinch and deform the tape, and push the deformed tape to the edge to be sealed of the photovoltaic module; the deformed tape can adapt to the contour of the edge to be sealed of the photovoltaic module to ensure that the tape wraps the edge to be sealed. The lubricating brushing device 63 is used to apply lubricating liquid to the tape to avoid affecting subsequent processes due to the sticking of the tape. The photovoltaic module feeding device 64 is used to transport the photovoltaic module to the desired position.

[0040] The limiting device allows the tape passing through the guide device 61 to pass into the gap between its stopper 50 and the groove bottom wall 32. After passing through the limiting device, the tape enters the pre-kneading propulsion device 62, which helps to accurately pre-knead the tape into a shape that matches the edge to be sealed.

[0041] In this embodiment, preferably, the guide wheels of the guiding device 61, the I-grooved wheels 30 of the limiting device, the pre-kneading propulsion device 62, and the lubricating brushing device 63 are located on the same side of the tape, and the photovoltaic module feeding device 64 is arranged on the other side of the tape corresponding to the pre-kneading propulsion device 62 and the lubricating brushing device 63. The guiding device 61 facilitates guiding the tape onto the I-grooved wheels 30, the pre-kneading propulsion device 62 can directly push the tape onto the photovoltaic module, and the brushing device is convenient for coating lubricating oil on the tape.

[0042] It should be noted that the tape reel, the guiding device 61, the pre-kneading propulsion device 62, the lubricating brushing device 63, and the photovoltaic module feeding device 64 in this embodiment are all prior arts. The photovoltaic module feeding device 64 sequentially conveys the photovoltaic modules to the positions corresponding to the pre-kneading propulsion device 62 and the lubricating brushing device 63 through the feeding rollers; the pre-kneading propulsion device 62 pushes the tape to the edge to be sealed of the photovoltaic module through the pre-kneading plate or the pre-kneading rollers, so that the tape fits onto the photovoltaic module; the lubricating brushing device 63 brushes the lubricating liquid on the tape through the brushing rollers. For example, the Chinese invention patent with the publication number CN109979865B also discloses the specific structures and working principles of a pre-kneading propulsion device 62, a lubricating brushing device 63, and a photovoltaic module feeding device 64, so they will not be elaborated in this embodiment.

[0043] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0044] The above-described embodiments only represent several implementation manners of the present utility model, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A tape limiting device, characterized in that: It comprises an I-shaped groove wheel (30) and a stopper (50); The I-shaped groove wheel (30) is rotatably arranged, and an annular groove (31) is formed along the circumference of its outer peripheral wall, and the annular groove (31) comprises a groove bottom wall (32) and two groove side walls (33), and the two groove side walls (33) are used to limit the position of the adhesive tape in the width direction of the adhesive tape; The stopper (50) is located on one radial side of the I-shaped groove wheel (30), and the stopper (50) can be movably extended into the annular groove (31), so that a gap is left between the stopper (50) and the groove bottom wall (32) for the tape to pass through, and the gap is used to limit the tape in the thickness direction of the tape.

2. The tape limiting device according to claim 1, characterized in that: The stopper (50) can rotate relative to the I-shaped groove wheel (30) under the action of an external force, and the center distances between the side walls of the stopper (50) and the rotation center line of the stopper are different in size. By rotating the stopper (50), the side wall with a shorter center distance can be selected to face the I-shaped groove wheel (30), or the side wall with a longer center distance can be selected to face the I-shaped groove wheel (30).

3. The tape limiting device according to claim 1, characterized in that: The stopper (50) comprises an arc side wall and a plane side wall, the center distance of the arc side wall is greater than the center distance of the plane side wall, and the arc side wall extends into the annular groove (31) to form the gap for the adhesive tape to pass through.

4. The tape limiting device according to claim 2, characterized in that: The stopper (50) is connected to the base (10) via a connecting frame (40); the connecting frame (40) comprises a first bracket (41) and two second brackets (42); the first bracket (41) is arranged on the base (10) and is parallel to the axial direction of the I-shaped groove wheel (30); the two second brackets (42) are vertically arranged on a side of the first bracket (41) facing the I-shaped groove wheel (30); and the stopper (50) is rotatably arranged between the two second brackets (42).

5. The tape limiting device according to claim 4, characterized in that: The stopper (50) is provided with a through hole (51) along its axial direction, and the through hole (51) passes through both end surfaces of the stopper (50); protrusions (43) are formed on the two second brackets (42), and the protrusions (43) are correspondingly penetrated into both ends of the through hole (51) to connect the stopper (50).

6. The tape limiting device according to claim 4, characterized in that: The stopper (50) can be moved closer to or farther away from the I-shaped groove wheel (30) along the radial direction of the I-shaped groove wheel (30) so as to adjust the distance between the stopper (50) and the I-shaped groove wheel (30).

7. The tape limiting device according to claim 6, characterized in that: The base (10) is provided with a strip groove (11) along the radial direction of the I-shaped groove wheel (30), and the first bracket (41) is arranged in the strip groove (11).

8. The tape limiting device according to claim 4, characterized in that: The device also includes an optical axis (20) with one end fixed to the base (10), and the I-shaped groove wheel (30) is rotatably sleeved on the optical axis (20) via a bearing.

9. An edge sealing system for a photovoltaic module, characterized in that: It comprises a photovoltaic module feeding device (64), and a chuck (60), a guide device (61), a limiting device according to any one of claims 1 to 8, a pre-kneading propulsion device (62), and a lubricating brushing device (63) which are arranged in sequence; The chuck (60) is rotatably arranged to place the tape roll (70) and release the tape; the guide device (61) includes a guide wheel for guiding the tape; the pre-kneading and pushing device (62) is used to pre-knead and deform the tape, and push the deformed tape to the edge to be sealed of the photovoltaic module; the lubricating brushing device (63) is used to apply lubricating liquid on the tape; the photovoltaic module feeding device (64) is used to transport the photovoltaic module to a desired position; The limiting device enables the adhesive tape passing through the guiding device (61) to penetrate into the gap between the stopper (50) and the groove bottom wall (32).

10. The photovoltaic module edge sealing system according to claim 9, characterized in that: The guide wheel of the guide device (61), the I-shaped groove wheel (30) of the limiting device, the pre-kneading propulsion device (62) and the lubricating brushing device (63) are located on the same side of the tape, and the photovoltaic module feeding device (64) is arranged on the other side of the tape corresponding to the pre-kneading propulsion device (62) and the lubricating brushing device (63).

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