Membrane belt material feeding device and series welding machine

Abstract

The utility model discloses a film belt material feeding device and a series welding machine, the film belt material feeding device comprises a conveying platform and a traction clamping jaw unit horizontally moving on the conveying platform, and a leveling mechanism is arranged between the input end of the conveying platform and the traction clamping jaw unit. The leveling mechanism comprises a leveling plate and a leveling power device, the leveling power device is configured to drive the leveling plate to be away from or close to the conveying platform and comprises a mounting plate, a telescopic power device and a guide structure, the fixed end of the telescopic power device is fixedly mounted on the mounting plate, and the movable end of the telescopic power device is fixedly connected with the leveling plate; the guide structure is configured to limit the movement direction of the leveling plate to be consistent with the driving direction of the telescopic power device. Through the arrangement of the flattening device, after the traction clamping jaw unit draws out the film belt material in the front way, the flattening device correspondingly presses the middle part and the tail part of the film belt material on the conveying belt, so that the conditions of distortion and position deviation of the film belt placed on the conveying belt are avoided, and the yield of battery strings is improved.

Description

Technical Field

[0001] This utility model belongs to the field of coated battery string production technology, and in particular relates to a film strip material feeding device and a string welding machine. Background Technology

[0002] In the production process of photovoltaic cell strings, more advanced modules now coat each cell with an EVA film. However, the handling of this film is still mainly manual, even with the use of film cutting equipment. For example, Chinese patent application CN112701074A discloses a film feeding device comprising: a film tape roll configured for winding a film tape; a film tape cutting device configured for cutting the film tape released from the film tape roll; and a film sheet. The device includes a membrane support device for receiving membrane sheets cut from a membrane strip by the membrane strip cutting device; a membrane strip traction device for clamping the end of a membrane strip and pulling the clamped membrane strip through the membrane strip cutting device before laying the membrane strip on the membrane support device; and a membrane sheet adsorption device for adsorbing the membrane sheets carried on the membrane support device and hot-pressing the released membrane sheets when releasing them onto a battery string formed by stacking solder strips and battery cells.

[0003] In the above scheme, after the membrane is manufactured, its end needs to be pulled by a traction device and placed on a carrier device. Then, a membrane adsorption device is used to place it on the battery cell. However, the membrane is a flexible sheet, and during the process of pulling it to the carrier position, the membrane is prone to twisting and displacement, resulting in inaccurate positioning of the membrane. This affects the precise placement of the membrane on the surface of the battery cell, leading to misalignment of the coating on the battery end surface and subsequent product defects and rework. Even if the membrane position is photographed and corrected on the carrier device, this correction method is too costly and not suitable for large-scale upgrades and modifications to existing equipment.

[0004] Therefore, there is an urgent need for a new type of membrane tape material feeding device to solve the above problems. Summary of the Invention

[0005] The main purpose of this invention is to provide a film tape material feeding device and a string welding machine, which can solve the problem that the film tape material will deviate after being pulled.

[0006] This utility model achieves the above objectives through the following technical solution:

[0007] On the one hand, this utility model provides a film belt material feeding device, including a conveying platform and a traction gripper unit that moves horizontally on the conveying platform, and a leveling mechanism is provided between the input end of the conveying platform and the traction gripper unit.

[0008] Specifically, the conveying platform includes two conveying rollers and a conveyor belt covering the conveying rollers, with suction holes provided on the conveyor belt.

[0009] Preferably, the traction gripper unit includes a lateral movement power device and a gripper, the gripper being disposed at the power end of the lateral movement power device, and the lateral movement power device driving the gripper to move above the conveyor belt.

[0010] Specifically, the gripper includes a fixed plate, a gripper power unit, an upper gripper block, and a lower gripper block. The fixed end of the gripper power unit is fixed on the fixed plate, and the movable end of the gripper power unit is rotatably connected to the upper or lower gripper block.

[0011] Specifically, the leveling mechanism includes a leveling plate and a leveling power unit, the leveling power unit being configured to drive the leveling plate away from or close to the conveyor platform.

[0012] Specifically, the leveling power device includes a mounting plate, a telescopic power device, and a guide structure. The fixed end of the telescopic power device is fixedly mounted on the mounting plate, and the movable end of the telescopic power device is fixedly connected to the leveling plate. The guide structure is configured to restrict the movement direction of the leveling plate to be consistent with the driving direction of the telescopic power device.

[0013] Preferably, the guide structure includes at least one guide post and a guide bearing, wherein the guide post passes through the guide bearing and is fixedly connected at one end to the flat plate.

[0014] Preferably, a limiting element is provided at the other end of the guide post, and the projection width of the limiting element on the guide bearing is greater than the inner diameter of the guide bearing.

[0015] Specifically, the flat plate is rectangular in shape and has at least one gap on its long side.

[0016] Specifically, the flat plate has three gaps on each of its two long sides, and the gaps are rectangular.

[0017] In particular, the surface of the flat panel has multiple rows of mounting holes that penetrate the flat panel.

[0018] Preferably, an elastic pressure member is installed inside the mounting hole.

[0019] Specifically, the flat plate has four rows of mounting holes, which are located on both sides of the gap.

[0020] On the other hand, this utility model also provides a string welding machine, including a battery string forming assembly and a coating assembly, wherein the coating assembly adopts the above-mentioned film and tape material feeding device.

[0021] Compared with the prior art, the beneficial effects of the membrane tape material feeding device and string welding machine of this utility model are as follows:

[0022] (1) By setting up the leveling device, after the traction gripper unit pulls out the film belt material in the front, the leveling device presses the middle and tail of the film belt material onto the conveyor belt, which avoids the film belt from twisting or shifting position when placed on the conveyor belt, and improves the yield of battery strings.

[0023] (2) By setting elastic pressure members in the mounting holes on the flat plate, the flat plate can use elastic force to press the film belt material, avoiding the use of the flat plate surface to press, thereby avoiding the film belt material being crushed. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the membrane tape material feeding device according to an embodiment of the present utility model;

[0025] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure from another perspective;

[0026] Figure 3 This is a schematic diagram of the gripper structure in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the leveling mechanism in an embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] Conveying platform; 11. Conveyor belt; 12. Conveyor roller; 111. Adsorption hole;

[0030] 21. Traction gripper unit; 22. Lateral movement force device; 22. Gripper; 221. Fixing plate; 222. Gripper power device; 223. Upper gripper block; 224. Lower gripper block;

[0031] Leveling mechanism; 31. Leveling plate; 311. Gaps; 312. Mounting holes; 32. Leveling power unit; 321. Mounting plate; 322. Telescopic power unit; 323. Guide structure; 3231. Limiting component; 3232. Guide column; 3233. Guide bearing. Detailed Implementation

[0032] Reference Figure 1 and Figure 2As shown, this utility model provides a film belt material feeding device, including a conveying platform 1 and a traction gripper unit 2 that moves horizontally on the conveying platform 1. A leveling mechanism 3 is provided between the input end of the conveying platform 1 and the traction gripper unit 2. In this embodiment, the conveying platform 1 includes two conveying rollers 12 and a conveyor belt 11 covering the conveying rollers 12. The conveyor belt 11 has suction holes 111. The two conveying rollers 12 are driven by a motor to rotate, which drives the conveyor belt 11 covering the conveying rollers 12 to slide in a plane, thereby allowing the film belt material placed on the conveyor belt 11 to move horizontally. The suction holes 111 on the conveyor belt 11 are provided to create a negative pressure space below the conveyor belt 11. The negative pressure space can apply negative pressure to the film belt material through the suction holes 111 on the conveyor belt 11, thereby making the film belt material tightly adsorbed on the conveyor belt 11, avoiding the film belt material from shifting and curling, and improving the conveying stability of the film belt material.

[0033] Of course, in the actual operation of this embodiment, the membrane material is an EVA film laid on the surface of the battery cell, which is released and cut by the front-end station to form a membrane block of a specified square size.

[0034] In actual operation, to facilitate the handling of the membrane blocks, in this embodiment, the traction gripper unit 2 includes a lateral movement power device 21 and a gripper 22. The gripper is located at the power end of the lateral movement power device 21, and the lateral movement power device 21 drives the gripper 22 to move above the conveyor belt 11. It is conceivable that the lateral movement power device 21 can be driven by a servo screw drive combination, or it can be driven by a servo motor synchronous pulley and synchronous belt, which will not be elaborated here.

[0035] like Figure 3 As shown, the gripper 22 includes a fixed plate 221, a gripper power device 222, an upper clamping block 223, and a lower clamping block 224. The fixed end of the gripper power device 222 is fixed to the fixed plate 221, and the movable end of the gripper power device 222 is rotatably connected to the upper clamping block 223 or the lower clamping block 224. In this embodiment, the gripper power device 222 is a movable cylinder, which is hinged to the upper clamping block 223 via a multi-link hinge. The retraction movement of the movable cylinder opens the upper clamping block 223 and the lower clamping block 224, and the extension movement of the movable cylinder clamps the upper clamping block 223 and the lower clamping block 224.

[0036] like Figure 4As shown, the leveling mechanism 3 includes a leveling plate 31 and a leveling power device 32. The leveling power device 32 is configured to drive the leveling plate 31 away from or close to the conveying platform 1. In this embodiment, the leveling power device 32 includes a mounting plate 321, a telescopic power device 322, and a guide structure 323. In this embodiment, the telescopic power device 322 is a telescopic cylinder. Of course, for higher precision, an electric cylinder or a servo screw can also be used. As long as a solution that can provide telescopic movement is provided, it should be within the protection scope of this utility model. The fixed end of the telescopic power device 322 is fixedly mounted on the mounting plate 321, and the movable end of the telescopic power device 322 is fixedly connected to the leveling plate 31. The guide structure 323 is configured to restrict the movement direction of the leveling plate 31 to be consistent with the driving direction of the telescopic power device 322.

[0037] In order to ensure that the flat plate 31 can be pressed down accurately and stably, the guide structure 323 includes at least one guide post 3232 and a guide bearing 3233. The guide post 3232 passes through the guide bearing 3233 and is fixedly connected to the flat plate 31 at one end. The guide bearing 3233 allows the guide post 3232 to slide more smoothly. In this embodiment, the guide bearing 3233 is a linear bearing.

[0038] Of course, by setting two guide structures 323, the movement of the flat plate 31 can be made smoother and more precise, avoiding jamming during telescopic movement.

[0039] In practical use, to prevent excessive sliding beyond the limit, a limiting element 3231 is provided at the other end of the guide column 3232. The projected width of the limiting element 3231 on the guide bearing 3233 is greater than the inner diameter of the guide bearing 3233. In this embodiment, a common coupling is used for the limiting element 3231, which can ensure the limiting function while reducing customization costs.

[0040] The flat plate 31 only needs to press the edge of the lower membrane block to prevent the membrane block from shifting or lifting at the tail. This is because the upper clamping block 223 and lower clamping block 224 clamp the membrane block at the front, and negative pressure adsorption occurs after it is placed on the conveyor belt 11. To save energy and materials for the entire equipment, the flat plate 31 is rectangular, and at least one notch 311 is provided on its long side. Specifically, three notches 311 are provided on each of the two long sides of the flat plate 31, and the notches 311 are rectangular. The three notches 311 form four protrusion positions, two of which correspond to the edge of the membrane block, and the remaining two correspond to the middle part of the membrane block.

[0041] If the entire surface of the flat plate 31 is pressed down, and the telescopic cylinder with low precision is used in this solution, the flat plate 31 is prone to excessive pressure, which may cause the membrane block to be over-pressed and damaged. Therefore, in this embodiment, multiple rows of mounting holes 312 are opened on the surface of the flat plate 31. The mounting holes 312 penetrate the flat plate 31, and elastic pressure members are installed in the mounting holes 312.

[0042] Specifically, the flat plate 31 has four rows of mounting holes 312, which are located on both sides of the gap 311. An elastic pressure element is installed in each mounting hole 312. The elastic pressure element can be an elastic pressure needle or a pressure block made of elastic material. In this solution, it is only necessary to apply elastic pressure to the membrane block, so this structure will not be described in detail.

[0043] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A film tape material feeding device comprising a conveyance platform and a pulling gripper unit that moves horizontally on the conveyance platform, characterized by, The flatting mechanism is arranged between the conveying platform input end and the traction jaw unit, and comprises a flatting plate and a flatting power device configured to drive the flatting plate away from or close to the conveying platform.

2. The film strip material feeding device according to claim 1, characterized in that, The conveying platform comprises two conveying rollers and a conveying belt wrapped around the conveying rollers, and the conveying belt is provided with suction holes.

3. The film strip material loading device according to claim 2, wherein, The traction jaw unit comprises a horizontal moving power device and a jaw, and the jaw is arranged at the power end of the horizontal moving power device.

4. The film strip material loading device according to claim 3, wherein, The jaw comprises a fixed plate, a jaw power device, an upper jaw block and a lower jaw block.

5. The film strip material loading device according to claim 4, wherein The flatting power device comprises a mounting plate, a telescopic power device and a guide structure.

6. The film strip material loading device according to claim 5, wherein The guide structure comprises at least one guide column and a guide bearing.

7. The film strip material loading device according to claim 6, wherein The flatting plate is in the shape of a cuboid, and at least one gap is arranged in the long side of the flatting plate.

8. The film strip material loading device according to claim 7, wherein The flatting plate is in the shape of a cuboid, and three gaps are arranged in each long side of the flatting plate.

9. The film strip material loading device according to claim 8, wherein The flatting plate is provided with a plurality of rows of mounting holes arranged on the surface thereof.

10. A stringer, comprising a battery string forming assembly and a film covering assembly, characterized in that, The flatting plate is provided with four rows of mounting holes arranged on the surface thereof. The film coating assembly adopts the film belt material loading device according to any one of claims 1-9.

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