Carrying and discharging mechanism for photovoltaic module EVA (ethylene vinyl acetate) gaskets

Abstract

The utility model discloses a carrying and discharging mechanism for photovoltaic module EVA (ethylene vinyl acetate) gaskets, which comprises more than one main lifters arranged on a cross beam of a machine tool, transfer frames which correspond to the main lifters and are arranged on slide blocks of the main lifters, material taking assemblies which are arranged at the front ends of the transfer frames, and righting assemblies which are arranged at the bottom sides of the transfer frames, the material taking assembly is provided with an auxiliary lifter and a pneumatic suction nozzle connected to a sliding head of the auxiliary lifter, and the pneumatic suction nozzle moves in a linkage mode and sucks or releases EVA gaskets. The centralizing assembly is provided with a composite chuck which is positioned corresponding to the busbar attached to the glass sheet and caters to sleeving of the EVA gasket, and a two-stage transfer device which drives the composite chuck to operate in a segmented mode. According to the carrying and discharging mechanism, a busbar attached to a photovoltaic module cell panel can be vertically restored through the centralizing assembly with the internal section controlled, the material taking assembly and the centralizing assembly are relatively positioned and fixed, and an accuracy guarantee is provided for placing an EVA gasket in place and accurately sleeving a turnover section of the busbar; multi-station side-by-side synchronous operation is achieved, and the operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic manufacturing equipment technology, and in particular to a material conveying 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] During the assembly and manufacturing process of photovoltaic modules, especially after the busbars are installed, custom-shaped EVA pads need to be attached to them before covering them with a glass plate. Busbars typically have a specific shape after installation, and the upward-facing folded section often tilts to varying degrees over time. This makes it difficult to place the upper EVA pads on top, as the center hole of the EVA pad is difficult to align with the folded section of the busbar, leading to abnormal interruptions in the production line process. Summary of the Invention

[0004] The purpose of this utility model is to provide a material handling and feeding mechanism for EVA pads in photovoltaic modules, which solves the problem of EVA pad handling and accurate feeding, and improves the alignment and fit between the busbar folding section and the opening of the EVA pad.

[0005] To achieve the above objectives, this utility model provides a material handling and unloading mechanism for EVA pads in photovoltaic modules, including one or more main lifters mounted on a machine tool crossbeam, a transfer frame mounted on a slider corresponding to each main lifter, a material picking component mounted on the front end of the transfer frame, and a straightening component mounted on the bottom side of the transfer frame. The material picking component is equipped with a secondary lifter and a pneumatic suction nozzle mounted on its slider. The pneumatic suction nozzle moves in linkage and picks up or releases the EVA pads. The straightening component is equipped with a composite chuck that positions the busbars attached to the glass sheet and accommodates the EVA pad assembly, and a two-stage transfer device that drives the composite chuck to operate in segments.

[0006] Furthermore, the machine tool crossbeam is provided with several first straight rail units that are laterally displaced and positioned along the length direction, and the main lifter is mounted one-to-one on the slide of the first straight rail unit and moves accordingly.

[0007] Furthermore, the carriage is equipped with a positioning unit consisting of a camera and a lighting source on the side facing away from the main lift.

[0008] Furthermore, the fixed part of the auxiliary lifter is connected to the front end of the adapter frame, and the sliding part of the auxiliary lifter is exposed on the adapter frame and is pneumatically driven for lifting and positioning. The slider is integrally connected to the bottom side of the sliding part, and a pair of pneumatic suction nozzles are fixedly connected to the folding plate of the slider. The spacing of the pneumatic suction nozzles is sufficient to adsorb the EVA pad and avoid the center opening of the EVA pad.

[0009] Furthermore, the front end of the adapter is equipped with a counter that records and digitally displays the amount of EVA pads fed into the device, located next to the auxiliary lifter.

[0010] Furthermore, the straightening assembly has a first-stage transferor at the bottom of the adapter frame, and a second-stage transferor at the bottom of the telescopic arm of the first-stage transferor. Each of the two transferors is connected to a part of the composite chuck, thereby driving the entire composite chuck or a part of it to adjust and position.

[0011] Furthermore, the composite chuck includes a page-separating chuck in the middle and a pair of separate, adjacent sleeves on both sides. The page-separating chuck is connected to the telescopic arm of the first-stage transfer device and is driven by it. The front end of the page-separating chuck is cone-shaped, and the two wings of the cone root are provided with receiving grooves corresponding to the upward-facing positioning distance of the busbar. The bottom of the telescopic arm of the second-stage transfer device is provided with an opening cylinder that is controlled to open and close parallel to the direction of the machine tool crossbeam. The sleeves are connected to the opening cylinder and are driven by it. Each sleeve is provided with a stepped closing groove facing the page-separating chuck. When the sleeves are closed, the folding section of the busbar remains vertically upward.

[0012] Furthermore, the adapter frame is an L-shaped folding plate frame with strong fixing plates installed on both sides, and a repeater for signal transfer and air source control of the auxiliary lifter, pneumatic suction nozzle, two-stage transfer device, and opening cylinder is connected to the inner top of the adapter frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This mechanism is applied to a photovoltaic module production line. Through the internal segmented and controlled straightening components, it can vertically straighten the busbars already attached to the photovoltaic module panels. Moreover, the material picking component and the straightening component are relatively fixed in position, which provides an accuracy guarantee for the placement of EVA pads and accurate connection of the folding sections of the busbars. The parallel and synchronous operation of multiple workstations improves the work efficiency. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the material transport and unloading mechanism of this utility model.

[0015] Figure 2 yes Figure 1 The diagram shows a side view of the material handling and unloading mechanism.

[0016] Figure 3 yes Figure 1The diagram shows a single-row three-dimensional structure of a portion of the radiotherapy delivery system. Detailed Implementation

[0017] 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.

[0018] like Figures 1 to 3 The present invention discloses a material handling and unloading mechanism for EVA pads in photovoltaic modules, comprising one or more main lifters 2 mounted on a machine tool crossbeam 1, a transfer frame 3 mounted on a slider corresponding to each main lifter 2, a material handling component 4 mounted on the front end of the transfer frame 3, and a straightening component 5 mounted on the bottom side of the transfer frame. In the illustrated embodiment, three main lifters 2 are mounted on the machine tool crossbeam, and each main lifter is independently controlled for lateral displacement and positioning. The material handling component 4 is provided with a secondary lifter 41 and a pneumatic suction nozzle 42 mounted on its slider. The pneumatic suction nozzle acts as the main actuator for material handling and unloading, moving in conjunction with displacement to pick up or release the EVA pads. The straightening component 5 is provided with a composite chuck 51 that positions the busbars attached to the glass sheet and accommodates the EVA pad assembly, and a two-stage transfer device that drives the composite chuck to operate in segments (detailed structure and operating status are described later). The above-mentioned basic structure of the material feeding and unloading mechanism, on the one hand, utilizes the composite chuck of the straightening component to feed, close, and retract in segments, so that the free end of the manifold on the glass sheet, which is arbitrarily tilted, is reinforced and positioned upwards, thereby preventing the opening of the EVA pad from being misaligned and fitted onto the free end of the manifold; on the other hand, it uses a pneumatic suction nozzle with controlled displacement positioning to move back and forth between the material picking station and the material unloading station, and cooperates with the straightening component to achieve accurate unloading of the EVA pad.

[0019] From a further technical refinement and optimization perspective, the machine tool crossbeam 1 is firstly equipped with several first straight rail units 11 for lateral displacement and positioning along its length, and the main lifter 2 is mounted one-to-one on the carriage 111 of the first straight rail unit 11 for follow-along movement. The assembly structure and control operation of this part are common in the machine tool design industry, therefore detailed descriptions and illustrations are omitted. As an optional auxiliary design, the carriage 111 is equipped with a positioning unit 6 consisting of a camera 62 and an illumination source 61 on the side facing away from the main lifter 2, thereby assisting the machine tool crossbeam and the first straight rail units in positioning and identification on the glass plate.

[0020] The fixed part 411 of the auxiliary lifter 41 is connected to the front end of the adapter 3, and the sliding part 412 of the auxiliary lifter 41 is exposed to the adapter 3 and is pneumatically driven for lifting and positioning. The slide head 413 is integrally connected to the bottom side of the sliding part 412 and a pair of pneumatic suction nozzles 42 are fixed on the folding plate 414 of the slide head. The spacing of the pair of pneumatic suction nozzles is sufficient to adsorb the EVA pad and avoid the center opening of the EVA pad.

[0021] The aforementioned straightening component 5 has a first-stage transferor 52 at the bottom of the adapter frame 3, and a second-stage transferor 53 is provided at the bottom of the telescopic arm of the first-stage transferor 52. Each of the two transferors is connected to a part of the composite chuck, driving the entire composite chuck or a part of it to adjust and position. Specifically, the composite chuck 51 includes a page-separating chuck 511 located in the middle and a pair of sleeves 512 separated and abutting on both sides. The page-separating chuck 511 is connected to the telescopic arm of the first-stage transferor 52 and is driven and linked. The front end 5111 of the page-separating chuck is cone-shaped, and the two wings of the cone root are provided with receiving grooves 5112 corresponding to the upward-facing positioning distance of the busbar. The telescopic arm of the second-stage transfer device 53 is equipped with an opening cylinder 54 that is parallel to the direction of the machine tool crossbeam and is controlled to open and close. The sleeve 512 is connected to the opening cylinder and is driven to move together. Each sleeve 512 is provided with a stepped closing groove 5121 facing the page chuck 511. When the sleeve is closed, the folding section of the busbar remains vertically upward.

[0022] Taking the cyclical operation of EVA pad transportation and unloading as an example, the machine tool beam and the first straight rail unit first drive the main lifter to the material picking station, and the pneumatic suction nozzle is driven downward to pick up the EVA pad and return it to its original position. Then, with the assistance of the positioning unit, the machine tool beam and the first straight rail unit drive the main lifter to move above the glass sheet unloading station. The main lifter moves slightly downward so that the composite chuck is close to the glass sheet but does not contact it. Then, the two-stage conveyors run synchronously and first send it forward a distance (the chuck is slightly forward of the piecing chuck). The piecing chuck is inserted into the middle of a pair of busbar folding sections, and the conical end guides the folding sections one by one into the receiving groove (the chuck opening is such that it does not collide with the folding sections at this moment). Then, the opening cylinder retracts inward so that the closing groove of the chuck moves closer to the piecing chuck, and the second-stage conveyor retracts appropriately to help strengthen the vertical upward shaping state of the folding sections. Next, the second-stage conveyor and the opening cylinder reset, and the auxiliary lifter controls the pneumatic suction nozzle to descend a certain distance, so that the opening of the EVA pad can be accurately and smoothly fitted onto the top of the folding section; then the first-stage conveyor resets, so that the composite chuck completely retracts to give way to the material feeding space; finally, the auxiliary lifter controls the pneumatic suction nozzle to descend further, so that the EVA pad completely covers the manifold, and the unloaded pneumatic suction nozzle resets, ready for the material feeding of the next cycle.

[0023] As an optimized design for electrification, the aforementioned adapter frame 3 is an L-shaped folding frame with strong fixing plates 31 installed on both sides to prevent slight deformation caused by load from affecting production failures and thus the service life of the equipment. Furthermore, a repeater 8 is connected to the inner top of the adapter frame, which connects to the auxiliary lifter, pneumatic suction nozzle, two-stage transfer device, and opening cylinder for signal transfer and air source control. This repeater primarily serves to facilitate signal line interaction and regulation, and optimize control. In the illustrated embodiment, the front end of the adapter frame 3, next to the auxiliary lifter, also features a counter 7 that records and digitally displays the amount of EVA pads dispensed.

[0024] In summary, the above description and detailed implementation of the photovoltaic module EVA pad conveying and unloading mechanism of this utility model demonstrate that this solution possesses substantial features and advancements: it can vertically align the busbars already attached to the photovoltaic module panel through internally segmented and controlled straightening components, and the relative positioning and fixed position of the material picking component and straightening component provide accuracy assurance for the placement of the EVA pads and their accurate fitting into the folding section of the busbars; the parallel and synchronous operation of multiple workstations improves work efficiency.

[0025] 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 mechanism for carrying and dispensing EVA gaskets for photovoltaic modules, characterized in that: The machine tool cross beam is provided with one or more main lifters arranged on the machine tool cross beam, a transfer frame arranged on the slider of each main lifter, a material taking assembly arranged on the front end of the transfer frame, and a righting assembly arranged on the bottom side of the transfer frame, wherein the material taking assembly is provided with a sub-lifter and a pneumatic suction nozzle arranged on the slider of the sub-lifter, and the pneumatic suction nozzle is connected and displaced to suck or release the EVA pad; the righting assembly is provided with a composite chuck that is positioned and matched with the EVA pad sleeved on the busbar of the glass sheet, and a two-stage transfer device that drives the segmented operation of the composite chuck.

2. The mechanism for carrying the EVA spacer of photovoltaic module according to claim 1, characterized in that: The machine tool cross beam is provided with a plurality of first straight rail units that are transversely displaced and positioned along the length direction, and the main lifters are one-to-one connected to the carriages of the first straight rail units.

3. The mechanism for carrying the EVA spacer of the photovoltaic module according to claim 2, characterized in that: The carriage is connected on the side away from the main lifter with a positioning unit composed of a camera and an illuminating light source.

4. The photovoltaic module EVA spacer carrying mechanism according to claim 1, wherein: The fixed part of the sub-lifter is arranged on the front end of the transfer frame, and the sliding part of the sub-lifter is exposed to the transfer frame and pneumatically driven to lift and position, the slider is integrally arranged on the bottom side of the sliding part and a pair of pneumatic suction nozzles are fixed on the flaps of the slider; the distance between the pneumatic suction nozzles satisfies the condition of adsorbing the EVA pad and avoiding the central opening of the EVA pad.

5. The photovoltaic module EVA spacer carrying mechanism of claim 1, wherein: The front end of the transfer frame is further provided with a counter that records the feeding amount of the EVA pad and digitally displays the feeding amount.

6. The photovoltaic module EVA spacer carrystock mechanism of claim 1, wherein: The righting assembly is provided with a first-stage transfer device at the bottom of the transfer frame, the bottom of the telescopic arm of the first-stage transfer device is provided with a second-stage transfer device, and the two-stage transfer devices are respectively connected to a part of the composite chuck to drive the adjustment and positioning of the entire composite chuck or a part thereof.

7. The mechanism for carrying the EVA spacer of the photovoltaic module according to claim 6, characterized in that: The composite chuck includes a page chuck in the middle and a pair of clamping sleeves separated on both sides, wherein the page chuck is connected to the telescopic arm of the first-stage transfer device and is driven to be connected, the front end of the page chuck is provided in the shape of a tapered head, and the tapered root is provided with a receiving groove corresponding to the upwardly turned positioning distance of the busbar; the bottom of the telescopic arm of the second-stage transfer device is provided with a mouth-opening air cylinder that is controlled to open and close in parallel to the direction of the machine tool cross beam, the clamping sleeve is connected to the mouth-opening air cylinder and is driven to be connected, and each clamping sleeve is provided with a stepped closing groove facing the page chuck, and in the closed state of the clamping sleeve, the folded section of the busbar remains vertically upward.

8. The photovoltaic module EVA spacer carrying mechanism of claim 1, wherein: The transfer frame is an L-shaped flap frame with strong fixed position plates added on both sides, and a repeater is arranged on the top inner side of the transfer frame to face the sub-lifter, the pneumatic suction nozzle, the two-stage transfer device, and the mouth-opening air cylinder to transfer signals and control the air source.

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