Film connecting mechanism and film supplying device

Abstract

The utility model provides a film connecting mechanism and a film supplying device, and relates to the technical field of solar module processing. The film connecting mechanism comprises a support, a first film clamping assembly, a hot connecting assembly and a second film clamping assembly, the first film clamping assembly, the hot connecting assembly and the second film clamping assembly are sequentially arranged on the support in the film supply direction, and the first film clamping assembly is used for fixing the initial end of a new film; the second film clamping assembly is used for fixing the tail end of the old film; the hot connection assembly comprises a welding piece and a base, and the base is provided with a film breaking position and a welding position; at least two of the first film clamping assembly, the hot connection assembly and the second film clamping assembly can move relative to the support, so that the initial end of the new film and the tail end of the old film are partially overlapped, the overlapped part is converted to the welding position, and the hot connection assembly is used for hot connection of the overlapped part on the welding position. The film connecting mechanism not only can shorten the time required for cutting the film material, but also can ensure the dimensional accuracy of the cut part and improve the film connecting effect of the new film material and the old film material.

Description

TECHNICAL FIELD

[0001] The utility model relates to solar module processing technical field, especially a membrane joint mechanism and membrane supply device. BACKGROUND

[0002] In the current solar cell panel manufacturing process, the membrane supply system generally adopts hot melting technology to realize seamless butt joint of new and old membrane materials when replacing the membrane material. However, after the implementation of the technology, the quality stability of the hot melting part of the membrane material is often unsatisfactory, which is specifically manifested in that the hot melting part is not firm enough, wrinkles appear on the hot melting part, and there is a large error between the stacking film width and the hot melting platform width. These problems have a negative impact on the subsequent processing quality of the cell panel. SUMMARY

[0003] The utility model provides a membrane joint mechanism including a support, a first membrane clamping assembly, a hot joint assembly, and a second membrane clamping assembly arranged in sequence along the membrane supply direction on the support. The first membrane clamping assembly is used to fix the beginning of the new membrane material. The second membrane clamping assembly is used to fix the end of the old membrane material. The hot joint assembly includes a melting piece and a base. The base is provided with a film breaking position and a melting position. At least two of the first membrane clamping assembly, the hot joint assembly, and the second membrane clamping assembly can translate relative to the support to make the beginning of the new membrane material and the end of the old membrane material partially overlap, and the overlapping position is transferred to the melting position. The hot joint assembly is used to hot joint the overlapping position on the melting position.

[0004] Optionally, the first membrane clamping assembly and the hot joint assembly are in sliding connection with the support, and the second membrane clamping assembly is fixed on the support.

[0005] Optionally, the first membrane clamping assembly and the second membrane clamping assembly are in sliding connection with the support, and the hot joint assembly is fixed on the support.

[0006] Preferably, the clamping piece of the first membrane clamping assembly and the second membrane clamping assembly includes at least a clamping plate and a reinforcing plate. The reinforcing plate and the clamping plate are fixedly connected, and the reinforcing plate is provided with an adjusting piece abutting against the clamping plate.

[0007] Preferably, the film breaking position is provided with an avoiding groove.

[0008] Further, one side of the avoiding groove close to the feeding end is higher than the other side close to the discharging end.

[0009] Preferably, the membrane joint mechanism further includes a cutting assembly used to perform a cutting action on the overlapping part after the beginning of the new membrane material and the end of the old membrane material overlap for the first time.

[0010] Optionally, the cutting assembly is a cold cutting assembly, which includes a cutting drive and a cutting tool, and the cutting drive can drive the cutting tool to perform a cutting action.

[0011] Optionally, the cutting assembly is a thermal cutting assembly, which includes a cutting drive and a hot wire, and the cutting drive can drive the hot wire to perform a cutting action.

[0012] In another aspect, this utility model also provides a film supply device, including the film splicing mechanism described above.

[0013] The present invention, by adopting the above-described technical solution, can achieve the following beneficial effects:

[0014] The film bonding mechanism uses a first clamping assembly and a second clamping assembly to clamp and fix the new film material and the old film material respectively, and works in conjunction with a heat bonding assembly. This not only shortens the time required for film material cutting, but also ensures the dimensional accuracy of the cut part and improves the bonding effect of the new and old film materials. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the membrane bonding mechanism in one embodiment of this application;

[0016] Figure 2 for Figure 1 Enlarged view of section A in the middle;

[0017] Figure 3 This is a schematic diagram of the heat-bonding process of the film bonding mechanism in one embodiment of this application;

[0018] Figure 4 This is a schematic diagram of the heat-sealing process of the film-coating mechanism in another embodiment of this application;

[0019] Figure 5 This is a schematic diagram illustrating the first and second overlaps of the new and old membrane materials in this application. Figures 1-5 middle,

[0020] 100, Support; 200, First membrane clamping assembly; 210, Clamping plate; 220, Reinforcing plate; 230, Adjusting component; 310, Welding component; 320, Base; 321, Membrane break position; 322, Welding position; 400, Second membrane clamping assembly; 500, New membrane material; 600, Old membrane material. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0022] In the utility model, "new film" and "old film" are used to distinguish two groups of film materials which are connected in front and back, rather than new and old in degree.

[0023] In the existing film supply system, there is instability in the connection quality in the connection process of new and old film materials, which will affect the subsequent use of the film materials. Specifically, in the connection process of new and old film pieces, the tail end of the old film roll and the front end of the new film roll need to be cut and flattened manually first, then the tail end of the cut old film roll and the front end of the new film roll are overlapped, and finally the overlapping part is heat-welded by a heat-welding assembly. In this heat-welding process, the cutting and flattening work of the tail end of the old film roll and the front end of the new film roll takes a long time, which has a negative impact on the working rhythm of the equipment; at the same time, when the tail end of the old film roll and the front end of the new film roll are overlapped manually, it is difficult to ensure that the size accuracy and flatness reach the ideal state, resulting in the possibility of unstable bonding at the heat-welding part. In addition, when the size accuracy is insufficient, there may be film materials that are not heat-welded at both ends of the heat-welding part, and these non-heat-welded film materials will become "impurities" in the subsequent film strip preparation process, affecting the quality of the battery assembly processing; and insufficient flatness will make it difficult to absorb and transport the film strip prepared in the subsequent welding section, thereby causing the equipment to stop.

[0024] Therefore, the application provides a film connecting mechanism to at least solve one of the above problems.

[0025] Specifically, as shown in Figures 1-2 the film connecting mechanism includes a support 100, a first film clamping assembly 200, a heat-welding assembly, and a second film clamping assembly 400 arranged in sequence on the support 100 in the film supply direction, wherein the first film clamping assembly 200 is used to fix the starting end of the new film material 500; the second film clamping assembly 400 is used to fix the end of the old film material 600; the heat-welding assembly includes a welding piece 310 and a base 320, the base 320 is provided with a film cutting position 321 and a welding position 322; at least two of the first film clamping assembly 200, the heat-welding assembly, and the second film clamping assembly 400 can move relative to the support 100, so that the starting end of the new film material 500 and the end of the old film material 600 partially overlap, and the overlapping part is transferred to the welding position 322, and the heat-welding assembly is used to heat-weld the overlapping part on the welding position 322.

[0026] The first film clamping assembly 200 and the second film clamping assembly 400 can adopt a telescopic compression structure, as shown in Figure 2As shown, the structure is composed of a pressing plate, a fixed plate and a telescopic cylinder. During operation, the film material is laid on the fixed plate, and then the telescopic cylinder drives the pressing plate, so that the film material is firmly clamped between the pressing plate and the fixed plate, thereby ensuring that the film material maintains a flat state during cutting and heat bonding operations. In addition, the film clamping assembly can also adopt a rotary clamping structure (not shown in the drawings), which includes a rotating plate, a fixed plate and a rotary cylinder. During operation, the film material is also laid on the fixed plate, and the rotating plate is driven to rotate by the rotary cylinder, and the rotating plate fixes the film material between the rotating plate and the fixed plate. Of course, in order to ensure the clamping effect, a non-slip pad can be installed on the clamping part to ensure that the film material does not move after being fixed. It is worth noting that the clamping structure of the film clamping assembly is not limited to this, any structure that can achieve overall clamping effect along the width direction of the film material is applicable, and the present application does not make specific limitations.

[0027] During the operation of the film clamping mechanism, first, the first film clamping assembly 200 and the second film clamping assembly 400 respectively clamp and fix the new film material 500 and the old film material 600, ensuring that the new film material 500 and the old film material 600 form a first overlap at the film cutting position 321; then, the overlapping parts of the new film material 500 and the old film material 600 are synchronously cut by the cutting tool, and the waste material is removed. It should be noted that the ends of the new and old film materials are not flat. After this cutting step is completed, the ends of the new and old film materials are located on the same cutting surface, so that the uneven end surfaces of the two can be changed into flat end surfaces, and the size accuracy of the cutting part is ensured. At the same time, compared with the two cutting actions of the new and old film materials, this step only needs one cutting action, which can shorten the time required for film cutting.

[0028] It should be noted that the structure of the heat bonding assembly is relatively mature, for example, using abutting heating, therefore, the structure thereof will not be described in detail.

[0029] In addition, a cooling system can be added to cool the film material after heat bonding, for example, a ventilation opening is added at the heat bonding position 322, and if necessary, an anti-sticking film can also be added to the heating surface.

[0030] In an embodiment of the present application, the first film clamping assembly 200 and the heat bonding assembly are in sliding connection with the support 100, and the second film clamping assembly 400 is fixed on the support 100.

[0031] In one specific embodiment, the first clamping assembly 200 and the heat-sealing assembly are connected to the bracket 100 via a linear guide rail, and the first clamping assembly 200 and the heat-sealing assembly can move along the length direction of the linear guide rail.

[0032] For ease of understanding, the heat connection process of this embodiment will be described in detail below:

[0033] Step1: Reference Figure 3 In stages a1-a2, both the first clamping assembly 200 and the welding assembly are in the cutting position, i.e., the position of the first clamping assembly 200 and the welding assembly during the film material cutting process. In this stage, the first clamping assembly 200 is responsible for securing the new film material 500 near the cutting position, while the second clamping assembly 400 secures the old film material 600 near the cutting position. During the securing process, an overlapping area between the new and old film materials is ensured; this is the first overlap between the new and old film materials. After the new and old film materials are secured, the operator uses a cutter to cut them simultaneously and removes the waste film.

[0034] Step 2: The first clamping assembly 200 moves the cut new film material 500, causing the new film material 500 and the old film material 600 to overlap again. The overlapping part is the bonding position. The welding assembly moves the welding position 322, so that the overlapping part of the new and old films is exactly located on the welding platform of the welding position 322. (Refer to...) Figure 3 In stage a2-a3, the first film clamping assembly 200 moves the new film material 500 to the right by a distance equal to the width of a heat-sealing platform, so that the overlapping part of the new film material 500 and the old film material 600 is the width of a heat-sealing platform. At the same time, the welding assembly moves to the left by a distance from the cutting position to the welding position 322. Thus, the overlapping part of the new film material 500 and the old film material 600 is directly opposite the heat-sealing platform.

[0035] Step3: Reference Figure 3 During stages a3-a4, the heat joint descends to perform the heat bonding action on the new and old film rolls on the heat bonding platform.

[0036] Step4: Reference Figure 3 During the a4-a1 stage, the heat joint rises, and the first membrane assembly 200 and the welding assembly return to their initial state, thus completing the heat welding.

[0037] Some actions in the above hot-welding process can be coordinated as needed to improve hot-welding efficiency. For example, the actions in Step 2 and Step 3 can be performed simultaneously.

[0038] In addition, the above-mentioned method for moving the first clamping assembly 200 and the welding assembly can be manual (with limit positioning) or automatic, such as using electric cylinders, pneumatic cylinders or other components for control.

[0039] In another embodiment of this application, the first clamping assembly 200 and the second clamping assembly 400 are slidably connected to the bracket 100, and the heat-sealing assembly is fixed on the bracket 100.

[0040] In one specific embodiment, the first clamping assembly 200 and the second clamping assembly 400 are connected to the bracket 100 via a linear guide rail, and the first clamping assembly 200 and the second clamping assembly 400 are movable along the length direction of the linear guide rail.

[0041] For ease of understanding, the heat connection process of this embodiment will be described in detail below:

[0042] Step1: Reference Figure 4 In stages b1-b2, both the first clamping assembly 200 and the second clamping assembly 400 are in the cutting position, i.e., their positions during the membrane material cutting process. In this stage, the first clamping assembly 200 is responsible for securing the new membrane material 500 near the cutting position, while the second clamping assembly 400 secures the old membrane material 600 near the cutting position. During the securing process, an overlap area between the new and old membrane materials is ensured. After the new and old membrane materials are secured, the operator uses a cutter to cut them simultaneously and removes the waste membrane.

[0043] Step 2: The first clamping assembly 200 moves the new film material 500, and the second clamping assembly 400 moves the old film material 600. The first clamping assembly 200 and the second clamping assembly 400 move unequal distances, causing the new film material 500 and the old film material 600 to overlap again, and the overlapping part of the new and old films is exactly located on the welding platform of the welding position 322. (Refer to...) Figure 4 In stages b2-b3, the first clamping assembly 200 moves the cut new film material 500 to the right, aligning the cut edge of the new film material 500 with the right edge of the welding platform. The second clamping assembly 400 moves the cut old film material 600 to the right, aligning the cut edge of the old film material 600 with the left edge of the welding platform. Thus, the cut new film material 500 and the cut old film material 600 overlap again, and the overlapping part is located exactly on the welding platform.

[0044] Step3: Reference Figure 4 In stages b3-b4, the heat joint descends to perform the heat bonding action by bonding the new and old film materials on the heat bonding platform.

[0045] Step4: Reference Figure 4 During stage b4-b1, the heat joint rises, and the first membrane assembly 200 and the second membrane assembly 400 return to their initial state, thus completing the heat connection.

[0046] Of course, in fact, in the Step2 above, the new film material 500 and the old film material 600 can form an overlapping part on the welding platform.

[0047] In some other embodiments of the present application, the first film clamping assembly 200, the second film clamping assembly 400 and the thermal bonding assembly are all in sliding connection with the support 100. Through the cooperation of the movements of the first film clamping assembly 200, the second film clamping assembly 400 and the thermal bonding assembly, the thermal bonding of the new and old film materials can also be completed. This scheme is a combination of the above two schemes, and will not be described in detail here.

[0048] The fixed clamping part and the movable clamping part of the first film clamping assembly 200 and the second film clamping assembly 400 have poor clamping effect, which causes the film material to be loose and wrinkled after being clamped, affecting the thermal bonding effect of the new and old film materials. Specifically, the film material itself has a low thickness, generally between 0.16mm-0.5mm, and a long width, generally greater than 1000mm. Therefore, the fixed clamping part and the movable clamping part not only need to have sufficient length, but also need to be highly matched. The material properties, processing precision, installation precision, service life and other factors of the fixed clamping part and the movable clamping part will all affect the cooperation of the two, causing the film material to be loose when clamped, the size precision to be insufficient when thermally bonded, and wrinkles to occur. Therefore, in some embodiments of the present application, the clamping part of the first film clamping assembly 200 and the second film clamping assembly 400 at least includes a clamping plate 210 and a reinforcing plate 220. The reinforcing plate 220 and the clamping plate 210 are fixedly connected by bolts, and a plurality of jacks are arranged on the reinforcing plate 220, and the end of each jack abuts against the clamping plate 210. In this way, the clamping plate 210 can be adjusted by the reinforcing plate 220 and the jacks to ensure that the clamping plate 210 is flatly matched with the fixed plate, so that the film material between the two can be clamped and fixed to avoid deformation. In other embodiments of the present application, the jacks can be replaced by other structures of adjusting pieces 230, as long as they can compensate for the flatness of the clamping plate 210. The specific structure of the adjusting piece 230 is not limited in the present application.

[0049] In some embodiments of the application, an avoiding groove is arranged on the film breaking position 321. The avoiding groove can provide an avoiding space for the tool for cutting the film material, avoid damaging the base 320 by the tool for cutting the film material, and improve the cutting effect of the film material.

[0050] Specifically, when using the manual cutting method, the avoiding groove is a knife groove, and the operator cuts the film material by using a knife. The knife can be inserted into the inside of the knife groove. This method not only ensures that the knife will not damage the base 320, but also provides a guiding function for the knife, thereby ensuring the flatness of the cutting surface. In addition, it can also fix the cutting position of the film material, which is convenient for the accurate overlapping of the new and old film materials. It is worth noting that different cutting methods will cause corresponding changes in the structure of the avoiding groove, and the structure of the avoiding groove is not limited in the present application.

[0051] In some embodiments of the application, the side close to the feeding end of the avoiding groove is higher than the side close to the discharging end. In this way, after the new and old film materials are cut, the new film material 500 is higher than the old film material 600, which can ensure that the new and old film materials are effectively overlapped in the subsequent process, and manual adjustment is not required.

[0052] Since there are problems of inconvenient operation when the film material is cut manually, in further embodiments of the application, the film receiving mechanism further comprises a cutting assembly, which is used to perform automatic cutting action on the overlapped part after the new film material 500 and the old film material 600 are overlapped for the first time. The cutting assembly can be independently arranged or mounted on the hot-joining assembly, and the specific mounting position is determined according to actual requirements.

[0053] In a specific embodiment of the application, the cutting assembly is embodied as a cutter assembly. The cutter assembly comprises a lifting driving mechanism, a translation driving mechanism, and a cutter seat provided with a cutter. The lifting driving mechanism is arranged above the hot-joining assembly, the translation driving mechanism is mounted on the driving end of the lifting driving mechanism, and the cutter seat is fixed to the driving end of the translation driving mechanism. In this structure, the avoiding groove is in the form of a cutter groove. In the process of performing the cutting operation, the lifting driving mechanism drives the cutter to penetrate into the cutter groove, and then the translation driving mechanism promotes the cutter to move horizontally, thereby completing the cutting action.

[0054] In another specific embodiment of the application, the cutting assembly is embodied as a gate assembly. The cutter assembly comprises a lifting driving mechanism and a cutter seat provided with a gate, the lifting driving mechanism is mounted on the hot-joining assembly, and the cutter seat is mounted on the driving end of the lifting driving mechanism. At this time, the avoiding groove is in the form of a cutter groove, and the cutter seat matched with the gate is mounted in the cutter groove. In the process of performing the cutting action, the lifting driving mechanism drives the gate to descend, thereby completing the cutting action. Of course, this cutting structure is preferably applicable to the embodiment in which the hot-joining assembly is fixed to the support 100.

[0055] It should be noted that the cutter assembly and the gate assembly are only exemplary descriptions of the cutting assembly, and in some other embodiments, other cold cutting assemblies can also be used as needed, which are not limited in the application.

[0056] In still another specific embodiment of the application, the cutting assembly is embodied as a hot wire assembly. The hot wire assembly comprises a lifting driving mechanism and a hot wire, the lifting driving mechanism is arranged above the hot-joining assembly, and the hot wire is mounted on the driving end of the lifting driving mechanism. At this time, the avoiding groove is in the form of a groove. In the process of performing the cutting action, the lifting driving mechanism drives the hot wire to descend, thereby completing the cutting action by melting and cutting.

[0057] It should be noted that the hot wire assembly is an exemplary description of the cutting assembly, and in some other embodiments, other hot cutting assemblies can also be used as needed, which is not specifically limited in the application.

[0058] In another aspect, the application also provides a film supply device, which comprises any one of the film receiving mechanisms in the embodiments.

[0059] Although the embodiments of the present application have been shown and described, it should be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A film take-up mechanism characterized by comprising: The film connecting mechanism comprises a support (100), a first film clamping assembly (200), a heat connecting assembly and a second film clamping assembly (400) arranged on the support (100) in sequence along a film feeding direction, wherein, the first film clamping assembly (200) is used for fixing a starting end of a new film material (500); the second film clamping assembly (400) is used for fixing an ending end of an old film material (600); the heat connecting assembly comprises a heat connecting piece (310) and a base (320), and the base (320) is provided with a film breaking position (321) and a heat connecting position (322); at least two of the first film clamping assembly (200), the heat connecting assembly and the second film clamping assembly (400) are capable of translating relative to the support (100) so that the starting end of the new film material (500) and the ending end of the old film material (600) partially overlap, and the overlapping position is transferred to the heat connecting position (322), and the heat connecting assembly is used for heat connecting the overlapping position on the heat connecting position (322).

2. The film attachment mechanism according to claim 1, wherein The first film clamping assembly (200) and the heat connecting assembly are in sliding connection with the support (100), and the second film clamping assembly (400) is fixed on the support (100).

3. The film attachment mechanism according to claim 1, wherein The first film clamping assembly (200) and the second film clamping assembly (400) are in sliding connection with the support (100), and the heat connecting assembly is fixed on the support (100).

4. The film attachment mechanism of claim 1, wherein The clamping piece of the first film clamping assembly (200) and the second film clamping assembly (400) comprises at least a clamping plate (210) and a reinforcing plate (220), the reinforcing plate (220) and the clamping plate (210) are fixedly connected, and the reinforcing plate (220) is provided with an adjusting piece (230) abutting against the clamping plate (210).

5. The film attachment mechanism of claim 1, wherein The film breaking position (321) is provided with an avoiding groove.

6. A film attachment mechanism according to claim 5, wherein The avoiding groove is higher on a side close to a feeding end than on a side close to a discharging end.

7. A film attachment mechanism according to any one of claims 1 to 6, wherein The film connecting mechanism further comprises a cutting assembly used for performing a cutting action on the overlapping part after the starting end of the new film material (500) and the ending end of the old film material (600) overlap for the first time.

8. The film attachment mechanism of claim 7, wherein The cutting assembly is a cold cutting assembly, and the cold cutting assembly comprises a cutting drive and a cutter, and the cutting drive is capable of driving the cutter to perform a cutting action.

9. The film attachment mechanism of claim 7, wherein The cutting assembly is a hot cutting assembly, and the hot cutting assembly comprises a cutting drive and a hot wire, and the cutting drive is capable of driving the hot wire to perform a cutting action.

10. A film supply device characterized by comprising: The film connecting mechanism comprises the film connecting mechanism according to any one of claims 1-9.

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