Blanking and feeding mechanism for photovoltaic module EVA (Ethylene Vinyl Acetate) gasket

Abstract

The utility model discloses a blanking and feeding mechanism for a photovoltaic module EVA (Ethylene Vinyl Acetate) gasket, which comprises a material strip roll frame, a punching component, a cutting component and a feeding component which are sequentially positioned and arranged along a material conveying direction, and an EVA material strip is guided and input into the punching component and is kept in a flattened state between the punching component and the cutting component; the punching assembly is provided with a drill bit driven by a punching air cylinder to ascend and descend, the end, close to the feeding assembly, of the cutting assembly is provided with a cutter controlled to ascend and descend for cutting, and the feeding assembly is provided with a linear reciprocating straight rail and a pneumatic suction cup for sucking cut EVA gaskets. The blanking and feeding mechanism is applied to a photovoltaic module production line, the EVA material belt is controlled to be kept in a flattened state, drilling, cutting, adsorption material taking and grouped feeding are achieved along the transmission path, the difficulty of picking up EVA gaskets in the later-stage process can be reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic manufacturing equipment technology, and in particular to a punching and feeding mechanism for EVA pads in photovoltaic modules. Background Technology

[0002] In the field of photovoltaic (PV) equipment, busbars are conductive strips attached to PV cells, typically made of silver paste or copper. A PV panel contains many cells, and the current generated by these cells needs to be collected to form the output of the entire PV module. Busbars help improve the overall efficiency of the PV module by consolidating this current into one or a few main current paths.

[0003] In the assembly and manufacturing process of photovoltaic modules, especially before the busbars are installed, custom-shaped EVA gaskets need to be applied to the glass plate. Typically, these EVA gaskets need to be mass-produced in large quantities. Due to their small size and extremely thin thickness, they are prone to scattering in the transport box during batch prefabrication, storage, transportation, and application, causing inconvenience for manual or robotic material handling. Therefore, a better process choice is to apply the gaskets as they are made, with multiple gaskets supplied simultaneously in a periodic manner to improve production efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a punching and feeding mechanism for EVA gaskets in photovoltaic modules, which solves the problem of high-efficiency EVA gasket feeding and ensures a clean production environment.

[0005] To achieve the above objectives, this utility model provides a punching and feeding mechanism for EVA pads in photovoltaic modules, comprising a strip reel, a punching assembly, a cutting assembly, and a feeding assembly arranged sequentially along the feeding direction. The EVA strip is guided into the punching assembly and kept flat between the punching assembly and the cutting assembly. The punching assembly is equipped with a drill bit driven to rise and fall by a punching cylinder. The cutting assembly is equipped with a controlled-lift cutting blade near the end of the feeding assembly. The feeding assembly is equipped with a linear reciprocating straight rail and a pneumatic suction cup for picking up the cut EVA pads.

[0006] Furthermore, the strip roll is positioned at a higher position relative to the other components, and there are two or more axially parallel guide rollers between the bottom side of the strip roll and the punching component, and at least one of the guide rollers is height-adjustable.

[0007] Furthermore, a drive double roller, which is driven by an active roller, is provided between the punching assembly and the cutting assembly, and the EVA strip passes through the drive double roller and its upper and lower surfaces are tangent.

[0008] Furthermore, the cutting assembly is provided with a pressure roller that applies pressure to the EVA strip along the EVA strip travel, and the pressure of the pressure roller is adjustable.

[0009] Furthermore, the outer end of the EVA strip is periodically pressed and positioned by a pneumatic suction cup, and is cut into EVA pads by a cutter while under the pressure of the pneumatic suction cup.

[0010] Furthermore, the pneumatic suction cup is driven by a straight rail to move back and forth between the EVA pad cutting station and the transfer station.

[0011] Furthermore, a relay platform parallel to the EVA strip travel is provided next to the feeding component, and the relay platform is driven by a servo motor to receive EVA pads from pneumatic suction cups at three receiving points at preset intervals.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This punching and feeding mechanism is applied to the photovoltaic module production line. By controlling the EVA strip to keep it flat and to realize drilling, cutting, adsorption and material picking and group feeding along the transmission path, it can reduce the difficulty of picking up EVA pads in the later process and improve production efficiency. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of the punching and feeding mechanism of this utility model.

[0014] Figure 2 yes Figure 1 The diagram shows the front view of the blanking feeding mechanism. Detailed Implementation

[0015] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so as to make the technical solution of this utility model easier to understand and master, and thus to make a clearer definition of the protection scope of this utility model. It should be understood that the specific embodiments described herein are merely used to explain this utility model and are not intended to limit this utility model.

[0016] This utility model proposes a punching and feeding mechanism for EVA pads in photovoltaic modules, such as... Figure 1The assembly includes a strip reel 1, a punching assembly 2, a cutting assembly 3, and a loading assembly 4, all positioned sequentially along the material feeding direction. The EVA strip 5 is guided into the punching assembly and kept flat between the punching and cutting assemblies. Tension is achieved during the EVA strip's travel by directional guidance. The punching assembly 2 is equipped with a drill bit 21 driven by a punching cylinder for raising and lowering, used to form square holes at intervals on the EVA strip to meet the requirements of busbar mounting. The actual hole shape can be slightly modified depending on the product; simply replace the drill bit with the appropriate shape. The cutting assembly 3 has a controlled-lift cutting blade 31 near the end of the loading assembly. The loading assembly 4 has a linear reciprocating rail 41 and a pneumatic suction cup 42 for picking up the cut EVA pads. It is important to clarify that, because the EVA pad 51 is relatively narrow, and the cutting action occurs near the end of the EVA strip, external force is needed to fix the outer end to prevent the EVA strip from warping and deforming during the cutting process, resulting in a shape inconsistent with the requirements. Therefore, this cutting and feeding mechanism uses a pneumatic suction cup to periodically press and position the outer end of the EVA strip, and the cutter cuts it into EVA pads 51 while the pneumatic suction cup is pressing, in order to ensure production yield.

[0017] From a further technical refinement and optimization perspective, the aforementioned strip reel 1 is positioned relatively high relative to the other components based on the upright frame 11. Two or more axially parallel guide rollers 12 are provided between the bottom side of the strip reel and the punching assembly, and at least one of these guide rollers is height-adjustable. Since the upright frame is assembled from multiple square aluminum profiles (with a known common cross-section), and these guide rollers are all fixed in grooves within these aluminum profiles via bushings and long screws, the height can be finely adjusted by adjusting the tension of the long screw and using a slider threaded to it and embedded in the groove. This allows for fine-tuning of the EVA strip tension and its conveying angle into the punching assembly.

[0018] like Figure 2 As shown, a drive double roller 6, which is driven as an active roller, is provided between the punching assembly 2 and the cutting assembly 3. The EVA strip 5 passes through the drive double roller and its upper and lower surfaces are tangent, serving as the power source for periodic feeding and a clamping component to keep the EVA strip flat during local processing (punching, cutting). At the same time, the cutting assembly 3 is provided with a pressure roller 32 that applies pressure to the EVA strip along the EVA strip's travel, and the pressure roller 32 can be adjusted by a torsion spring and an adjusting nut mounted on its outer top.

[0019] To facilitate seamless integration with subsequent processes, the pneumatic suction cup 42 is driven by a straight rail 41 to move back and forth between the EVA pad cutting station and the transfer station. Furthermore, a relay platform parallel to the EVA strip's travel path is located beside the loading module. This relay platform, driven by a servo motor, receives EVA pads from the pneumatic suction cup at three pre-set intervals. This allows for the simultaneous application of multiple EVA pads at different points along the same lateral direction during photovoltaic module manufacturing.

[0020] In summary, the above description and detailed implementation of the punching and feeding mechanism for EVA pads in photovoltaic modules demonstrate that this solution possesses substantial features and advancements: This punching and feeding mechanism, applied to photovoltaic module production lines, controls the EVA strip to remain flat and achieves drilling, cutting, adsorption, and group feeding along the transmission path, thereby reducing the difficulty of picking up EVA pads in subsequent processes and improving production efficiency.

[0021] In addition to the above embodiments, the present invention may have other implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by the present invention.

Claims

1. A punching feed mechanism for EVA gaskets of photovoltaic modules, characterized in that: The EVA material belt is guided into the punching assembly and kept flat between the punching assembly and the cutting assembly, the punching assembly is provided with a drill bit driven by a punching cylinder, the cutting assembly is provided with a cutter near the end of the feeding assembly for controlled cutting, and the feeding assembly is provided with a linearly reciprocating straight rail and a pneumatic suction cup for sucking the cut EVA gasket.

2. The punch feed mechanism for EVA gaskets of photovoltaic modules according to claim 1, characterized in that: The material belt reel is arranged at a high position relative to the other components, and two or more axial parallel guide rollers are arranged between the bottom side of the material belt reel and the punching assembly, and at least one of the guide rollers is adjustable in height.

3. The punch feed mechanism for EVA gaskets of photovoltaic modules according to claim 1, characterized in that: A transmission double roller with one driven as a driving roller is arranged between the punching assembly and the cutting assembly, and the EVA material belt passes between the transmission double roller and the cutting assembly.

4. The punch feed mechanism for EVA gaskets of photovoltaic modules according to claim 1, characterized in that: The cutting assembly is provided with a pressure roller along the EVA material belt stroke for applying pressure to the EVA material belt, and the pressure of the pressure roller is adjustable.

5. The punch feed mechanism for EVA gaskets for photovoltaic modules according to claim 1, characterized in that: The outer end of the EVA material belt is periodically pressed against the cutting position of the cutting assembly by the pneumatic suction cup, and the EVA gasket is cut by the cutter when the pneumatic suction cup is pressed.

6. The punch feed mechanism for EVA gaskets for photovoltaic modules according to claim 1, characterized in that: The pneumatic suction cup is driven by the straight rail to reciprocate between the cutting position and the transfer position of the EVA gasket.

7. The punch feed mechanism for EVA gaskets for photovoltaic modules according to claim 1, characterized in that: A relay platform parallel to the EVA material belt stroke is arranged beside the feeding assembly, and the relay platform is driven by a servo motor to receive the EVA gasket from the pneumatic suction cup at three preset interval receiving points.

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