Multifunctional integrated all-in-one machine for photovoltaic module production

Abstract

The invention discloses a multifunctional integrated all-in-one machine for photovoltaic module production, which is provided with a machine body frame of a process link in a production line, and the machine body frame is provided with an EVA (Ethylene Vinyl Acetate) gasket blanking and feeding mechanism, an EVA gasket carrying and discharging mechanism, a label printer, an internal label pasting mechanism and an industrial control air source assembly corresponding to a photovoltaic module semi-finished product which is transferred into the machine body frame, and continuously processing and transferring in a process cycle, placing EVA (Ethylene Vinyl Acetate) gaskets at preset positions of the semi-finished photovoltaic module products, and attaching labels between glass sheet layers. The all-in-one machine is applied to a photovoltaic module production line, a plurality of scattered process links are optimized and integrated in one machine body frame for parallel control operation, the completion yield of each process link is improved, the processing time consumed by repeated circulation, restoration and fixation of photovoltaic module semi-finished products is greatly shortened, and the production efficiency is improved. The processing period from the moment that the photovoltaic module semi-finished product enters the machine body frame to the moment that the photovoltaic module semi-finished product is separated is shortened to 13 seconds.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic manufacturing equipment, and in particular to a multi-functional integrated machine for photovoltaic module production. Background Art

[0002] In the field of photovoltaic equipment, a photovoltaic module production line is composed of several machine tools customized according to the process technology, arranged and controlled jointly according to the production process, and the production process from raw materials, assemblies to finished products is completed in segments.

[0003] A bus bar is a conductive bar attached to a photovoltaic cell, usually made of silver paste or copper bar. There are many cells on a photovoltaic panel, and the current generated by these cells needs to be collected together to form the output of the entire photovoltaic module. The bus bar helps to improve the efficiency of the entire photovoltaic module by collecting these currents onto one or several main current paths.

[0004] In the process of assembling and preparing a photovoltaic module, especially before the installation and attachment of the bus bar, a customized-shaped EVA gasket needs to be attached to the glass plate first. To avoid the situation that the EVA gasket is prone to scattering and difficult to turnover in batches due to its own shape specification parameters, etc., the preferred process is to attach it as it is made, and multiple feeding synchronously and periodically. And after the installation and attachment of the bus bar, a customized-shaped EVA gasket also needs to be attached to it, and then the glass plate is covered. Usually, the bus bar has a specific shape after being mounted, especially the folded section facing upward after being mounted often tilts to varying degrees over time, which brings difficulties in placing the upper EVA gasket on it, that is, the central hole of the EVA gasket is difficult to align with the folded section of the bus bar for placement, thereby causing abnormal interruption of the production line process.

[0005] And after the installation and attachment of the bus bar and the sleeving of the EVA gasket, the glass plate needs to be covered again. Therefore, a photovoltaic module usually has two glass plates (or glass sheets) to sandwich and protect the internal core components. As requirements such as product traceability, it is currently necessary to add a label that is easy to scan and identify and not easily tampered with during the production process of photovoltaic modules. Therefore, attaching a label (attaching an internal label) between the two glass sheets has become the preferred implementation means to solve this problem. However, the current photovoltaic module production line has a high degree of automation, and relying on manual participation in attaching this internal label will greatly affect the efficiency and accuracy.

[0006] In the existing photovoltaic module production line, the processes of paving photovoltaic cells, pasting EVA gaskets on the bottom side, mounting busbars, sleeving EVA gaskets on the top side, and pressing glass sheets are segmented processes, that is, each process is completed in a functionally customized body frame. Therefore, the semi-finished photovoltaic modules need to be transferred between multiple body frames and strongly positioned. On the one hand, the cost investment is huge and the risk of damage to the semi-finished photovoltaic modules is increased. On the other hand, the process time of these processes is prolonged, and there is an objective room for improving production efficiency. Summary of the Invention

[0007] The purpose of the present invention is to provide a multi-functional integrated machine for photovoltaic module production, which solves the technical problem of one-stop operation of multiple processes in the production process and optimizes the transfer efficiency of finished products.

[0008] To achieve the above purpose, the present invention provides a multi-functional integrated machine for photovoltaic module production, which has a body frame of a process in a production line. It is characterized in that: corresponding to the semi-finished photovoltaic modules transferred in, the body frame is distributed with an EVA gasket punching and feeding mechanism, an EVA gasket transporting and placing mechanism, a label printer, an inner label pasting mechanism and an industrial control air source assembly. Among them, the EVA gasket punching and feeding mechanism is arranged on the inner front side of the body frame and continuously processes the EVA gaskets sleeved on the busbars of the semi-finished photovoltaic modules. The EVA gasket transporting and placing mechanism is mounted above the semi-finished photovoltaic modules based on a moving machine tool crossbeam in the body frame and is controlled to move back and forth between the feeding station and the busbar. The inner label pasting mechanism is suspended and mounted above the outer side of the semi-finished photovoltaic modules based on a static machine tool crossbeam in the body frame. The label printer is arranged on the inner rear side of the body frame and close to the inner label pasting mechanism. The inner label pasting mechanism is controlled to suck the label and conform to the semi-finished photovoltaic modules. Each mechanism and the label printer are connected to the industrial control air source assembly through a bus and cooperate to run, and complete the release of EVA gaskets at preset positions of the semi-finished photovoltaic modules and the pasting of labels between glass sheets in one process cycle.

[0009] Furthermore, the EVA gasket punching and feeding mechanism includes a tape reel rack, a punching component, a cutting component and a feeding component sequentially positioned along the material feeding direction. The EVA tape is guided and input into the punching component. The punching component is provided with a drill bit with a pressure sleeve driven by a punching cylinder to lift and lower. The cutting component is provided with a cutter controlled to lift and cut near the end of the feeding component. The feeding component is provided with a straight rail and a pneumatic suction cup for sucking the cut EVA gaskets.

[0010] Furthermore, the pneumatic suction cup is driven by the straight rail to move back and forth between the cutting station and the transfer station of the EVA gasket. The outer end of the EVA tape is periodically pressed and positioned by the pneumatic suction cup, and is cut into EVA gaskets under the pressing state of the pneumatic suction cup.

[0011] Furthermore, a relay platform parallel to the travel of the EVA material belt is provided on the side of the loading component close to the EVA gasket carrying and unloading mechanism, and the relay platform is driven by a servo motor to receive and negatively position the EVA gasket from the pneumatic suction cup at three receiving points at preset intervals.

[0012] Furthermore, the EVA gasket carrying and unloading mechanism includes three main lifters mounted on the crossbeam of the machine bed, a first adapter frame on which each main lifter is mounted correspondingly, a material picking assembly mounted on the front end of the first adapter frame, and a straightening assembly mounted on the bottom side of the first adapter frame, wherein the material picking assembly is provided with a secondary lifter and a pneumatic suction nozzle mounted on its slider, the pneumatic suction nozzle is linked to move and absorb or release the EVA gasket; the straightening assembly is provided with a composite chuck which is positioned corresponding to the bus bar attached to the glass sheet and accommodates the EVA gasket set, and a two-stage conveyor which drives the composite chuck to operate in sections.

[0013] Furthermore, the fixed part of the auxiliary lifter is connected to the front end of the first adapter frame, and the sliding part of the auxiliary lifter is exposed on the first adapter frame and is air-driven to lift and position, the slider is integrally connected to the bottom side of the sliding part and a pair of pneumatic suction nozzles are fixed on the folding plate of the slider; the spacing between the pneumatic suction nozzles is sufficient to adsorb the EVA gasket and avoid the central opening of the EVA gasket.

[0014] Furthermore, the straightening assembly is provided with a first-stage conveyor at the bottom of the first adapter frame, a second-stage conveyor is provided at the bottom of the telescopic arm of the first-stage conveyor, an opening cylinder which is controlled to open and close in parallel with the direction of the machine bed beam is provided at the bottom of the telescopic arm of the second-stage conveyor, and the composite chuck comprises a paging chuck located in the middle and a pair of jackets which are separated and leaning against each other on both sides, wherein the paging chuck is connected to the telescopic arm of the first-stage conveyor and is driven in linkage, the front end of the paging chuck is configured as a cone head shape and the two wings of the cone root are provided with accommodating grooves corresponding to the upward flipping positioning spacing of the bus; the jacket is connected to the opening cylinder and is driven in linkage opening and closing, the two-stage conveyor drives the entire composite chuck or a part of it to adjust the positioning, each jacket is provided with a step-shaped closing groove toward the paging chuck, and when the jacket is closed, the folded section of the bus remains vertically upward.

[0015] Furthermore, the internal labeling mechanism includes a first horizontal transfer unit and a sliding frame connected to the static machine bed beam, a second horizontal transfer unit and a slide connected to the sliding frame, a lifter and a second adapter frame connected to the slide, a steering unit connected to the platform plate of the second adapter frame, a swing steering unit connected to the output shaft of the steering unit below the platform plate, and a labeling unit connected to the outward end of the swing rod of the swing steering unit. The labeling unit is driven to absorb the label to be attached at the label printer, and caters to the edge of the double-layer glass sheet of the photovoltaic module to attach the label between the glass layers.

[0016] Further, the swing and direction-changing unit is provided with a pneumatically-driven turntable, and a clamp is provided at the rotating shaft of the turntable. The inner end of the swing rod is inserted and fixed in the clamp and is controlled to rotate accordingly, while the outer end of the swing rod is integrally connected to the labeling unit and flips 180 degrees along the rotation center axis of the turntable.

[0017] Further, the labeling unit is composed of a base plate, a label adsorption plate and a buffer spring. The label adsorption plate is connected to the bottom side of the base plate, and the buffer spring is clamped between the two plates to maintain a propping state. A number of guiding and sliding groups are provided around the buffer spring between the two plates to maintain the parallel state of the relative movement of the two plates; an air channel is provided in the label adsorption plate, one end of the air channel is externally connected to a gas source, and the other end of the air channel is formed into air holes on the material taking panel.

[0018] Compared with the prior art, the beneficial effects of the integrated machine of the present invention applied to the photovoltaic module production line are as follows: By optimizing and integrating multiple process links in a body frame, various mechanisms for EVA gasket blanking and feeding, transporting and placing materials, and attaching labels between double-layer glass sheets are distributed and controlled in parallel to operate, improving the yield rate of each process link, and greatly shortening the process time-consuming due to the repeated transfer and repositioning and fixing of photovoltaic module semi-finished products. The processing cycle from the photovoltaic module semi-finished product flowing into the body frame to separating is reduced to 13 seconds. Description of the Drawings

[0019] Figure 1 is the overall assembled three-dimensional structure schematic diagram of the multifunctional integrated machine of the present invention.

[0020] Figure 2 is Figure 1 the top view structure schematic diagram of the multifunctional integrated machine shown.

[0021] Figure 3 is the close-up three-dimensional structure schematic diagram of the EVA gasket blanking and feeding mechanism in the integrated machine of the present invention.

[0022] Figure 4 is the close-up three-dimensional structure schematic diagram of the EVA gasket transporting and placing mechanism in the integrated machine of the present invention.

[0023] Figure 5 is Figure 4 the close-up structure schematic diagram of a part from another perspective.

[0024] Figure 6 is the close-up structure schematic diagram of the inner label attaching mechanism in the integrated machine of the present invention.

[0025] Figure 7 is Figure 6 the close-up structure schematic diagram of the assembly of the swing and direction-changing unit and the labeling unit in. Detailed Embodiments

[0026] The following will further elaborate on the specific implementation manners of the present invention in conjunction with the accompanying drawings of the embodiments, so that the technical solutions of the present invention can be more easily understood and mastered, thereby more clearly defining the protection scope of the present invention. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] The present invention provides a multi-functional integrated machine for photovoltaic module production, as Figure 1 and Figure 2 shown. It has a machine body frame 1 of a technological process link in the production line, and corresponding to the semi-finished photovoltaic module 2 transferred in, an EVA gasket blanking and feeding mechanism 3, an EVA gasket transporting and feeding mechanism 5, a label printer (not labeled), an inner label pasting mechanism 6, and an industrial control air source assembly 7 are distributed. From the perspective of spatial layout and functional design of the corresponding manufacturing process links, through grooves are opened in the middle of both sides of the machine body frame, and a transmission unit 15 and an operation platform 11 for the transfer and correct positioning of the semi-finished photovoltaic module are provided at the bottom, and a semi-finished photovoltaic module 2 to be further processed is already placed on the operation platform. Based on this, the EVA gasket blanking and feeding mechanism 3 is arranged on the inner front side bracket 12 of the machine body frame (i.e., one side in the length direction of the semi-finished photovoltaic module), and is used for continuously processing and feeding the EVA gasket for the busbar assembly of the semi-finished photovoltaic module in to the semi-finished photovoltaic module. The EVA gasket transporting and feeding mechanism 5 is mounted above the semi-finished photovoltaic module based on a moving machine tool crossbeam 131 in the machine body frame, and is controlled to move back and forth between the feeding station and the busbar; synchronously sleeving the EVA gasket at multiple points of the pre-pasted busbar. The moving machine tool crossbeam 131 is a part of the gantry hanging unit 13 arranged inside the machine body frame 1, and is driven to translate and position along the guide rail arranged at the top of the body frame. The inner label pasting mechanism 6 is suspended above the outside of the semi-finished photovoltaic module (i.e., the other side in the length direction of the semi-finished photovoltaic module) based on a static machine tool crossbeam 14 in the machine body frame 1, and the label printer is arranged at the inner rear side of the machine body frame and is close to the inner label pasting mechanism. The inner label pasting mechanism is controlled to suck the label and adapt to the semi-finished photovoltaic module. An independent cavity 16 is opened at a corner on one side of the machine body frame for the centralized installation of the industrial control air source assembly, and each mechanism and the label printer are connected to the industrial control air source assembly through a bus and cooperate to operate, and in a technological cycle, the EVA gasket is released at a preset position of the semi-finished photovoltaic module and the label is attached between the glass layers.

[0028] As can be seen from the above overview of the integrated mechanism, the semi-finished photovoltaic modules introduced into this integrated machine are conveyed in one direction to continuously produce EVA gaskets from an EVA tape, and three EVA gaskets are batch-carried to the position of the bus bar as a group and accurately and with high yield, the releasing and sleeving are completed; in another direction, labels are output by a label printer, and the labeling unit sucks the labels, transfers and completes the reverse attachment between the glass sheets. The above production operations of each part run independently. In particular, the direct operations for the semi-finished photovoltaic modules can be regarded as synchronous operations with extremely small time differences. Thus, two or more production operation points are realized within the body frame of a technological process. There is no need to frequently transfer and position the semi-finished products and complete the above multiple operation points at different times.

[0029] From a further technical refinement and optimization perspective: such as Figure 3 As shown above, the EVA gasket blanking and feeding mechanism 3 includes a tape reel 31, a punching component 32, a cutting component 33, and a feeding component 34 that are sequentially positioned along the material feeding direction. The EVA tape 9 is fed into the punching component 32 and remains flattened between the punching component 32 and the cutting component. Tension is achieved through directional guiding during the travel of the EVA tape. The punching component 32 is provided with a pressure sleeve drill bit 321 driven by a punching air cylinder to lift and lower, which is used to form double rows of holes at intervals on the EVA tape to meet the technological requirements for sleeving on the bus bar. Here, since the EVA tape is thin and soft, to avoid warping deformation and abnormal hole formation during drilling, the pressure sleeve drill bit is driven to lift and stop in sections. That is, each time drilling is performed, the pressure sleeve first contacts the EVA tape and forces it to be flattened under closed-loop force, so that the drill bit can ensure the hole-forming accuracy within the range of the pressure sleeve. The cutting component 33 is provided with a cutter 331 that is controlled to lift and cut near the end of the feeding component. At the same time, the feeding component 34 is provided with a linear reciprocating straight rail 341 and a pneumatic suction cup 342 for sucking the cut EVA gaskets. It should be clear that since the EVA gasket 91 is relatively narrow and small, and the cutting action occurs at a position near the end of the EVA tape, external force is needed to fix the outer end to prevent the EVA tape from warping and deforming during cutting, resulting in a shape inconsistent with the required shape. Therefore, in this blanking and feeding mechanism, the outer end of the EVA tape is periodically pressed and positioned by the pneumatic suction cup, and the EVA tape is cut into EVA gaskets 91 by the cutter under the pressing state of the pneumatic suction cup to ensure the production yield.

[0030] Furthermore, a driving double roll 35 with one of them driven as a driving roll is provided between the punching component 32 and the cutting component 33. The EVA tape 9 passes through between the driving double rolls and the upper and lower surfaces are tangent, serving as the power for periodic feeding and the clamping component to maintain the flattening of the EVA tape during local processing (punching, cutting).

[0031] Such as Figure 4 And Figure 5The EVA gasket carrying and unloading mechanism 5 shown above includes three main lifters 52 mounted on the machine bed crossbeam 131, and each main lifter is independently controlled to be horizontally displaced and positioned. Each main lifter is mounted on a first adapter frame 53 on the slider, a material-retrieving assembly 54 mounted on the front end of the first adapter frame, and a straightening assembly 55 mounted on the bottom side of the first adapter frame. The material-retrieving assembly 54 is provided with a secondary lifter 541 and a pneumatic suction nozzle 542 mounted on its slider. The pneumatic suction nozzle acts as the main action actuator for carrying and unloading, and moves in linkage and absorbs or releases the EVA gasket. The straightening assembly 55 is provided with a composite chuck 551 that is positioned corresponding to the bus bar attached to the glass sheet and caters to the EVA gasket set, and a two-stage conveyor that drives the composite chuck to run in sections (the detailed structure and operating status are described in detail later). The basic structure of the above-mentioned transport and unloading mechanism, on the one hand, utilizes the composite chuck of the straightening component to feed, close and withdraw in sections so that the free end of the busbar that is arbitrarily tilted on the glass sheet is strengthened to be positioned upward, so as to prevent the opening of the EVA gasket from being unable to be aligned and sleeved on the free end of the busbar; on the other hand, utilizes the pneumatic suction nozzle with controlled displacement positioning to travel back and forth between the material picking station and the material unloading station, and cooperates with the straightening component to realize the accurate unloading of the EVA gasket.

[0032] A first straight rail unit 51 is provided between each of the above main lifters and the machine bed cross beam, and the main lifters are attached to the slide of the first straight rail unit one-to-one, and are positioned by lateral displacement along the length direction. A positioning unit 56 composed of a camera 562 and an illumination light source 561 is attached to the slide on the side facing away from the main lifter, so as to assist the machine bed cross beam and the first straight rail unit in positioning and identifying on the glass sheet. The assembly structure and control operation mode of this part are common structures in the machine tool design industry, so detailed description and detailed illustrations are omitted.

[0033] The fixed part of the auxiliary lifter 541 is connected to the front end of the first adapter frame 53, and the sliding part of the auxiliary lifter 541 is exposed on the first adapter frame 53 and is air-driven to lift and position, while the slider is integrally connected to the bottom side of the sliding part and a pair of pneumatic suction nozzles 542 are fixedly connected to the folding plate of the slider; the spacing between the pair of pneumatic suction nozzles is sufficient to adsorb the EVA gasket and avoid the central opening of the EVA gasket.

[0034] The above-mentioned straightening assembly 55 is provided with a first-stage conveyor 552 at the bottom of the first adapter frame 53, and a second-stage conveyor 553 is provided at the bottom of the telescopic arm of the first-stage conveyor 552, and an opening cylinder 554 is provided at the bottom of the telescopic arm of the second-stage conveyor 553, which is controlled to open and close in parallel to the direction of the machine bed crossbeam. The composite chuck 551 includes a paging chuck 5511 located in the middle and a pair of jackets 5512 separated and leaning on both sides, wherein the paging chuck 5511 is connected to the telescopic arm of the first-stage conveyor 552 and driven in linkage, and the front end of the paging chuck 5511 is set as a cone head shape and the two wings of the cone root are provided with a receiving groove corresponding to the upward positioning spacing of the bus. The jacket 5512 is connected to the opening cylinder 554 and is driven to open and close in linkage. The two-stage conveyor drives the entire composite chuck or each drives a part of it to adjust the positioning. In particular, each of the jackets 5512 is provided with a step-shaped closing groove toward the paging clamp 5511, so that when the jacket is closed, the folded section of the busbar remains vertically upward.

[0035] In the cyclical operation process of EVA gasket transportation and discharge, the main lifter is first driven by the machine bed beam and the first straight rail unit to the material taking station, and the pneumatic suction nozzle is driven downward to suck the EVA gasket and reset upward; then, with the assistance of the positioning unit, the main lifter is driven by the machine bed beam and the first straight rail unit to move to the air above the glass sheet discharge station. The main lifter moves slightly downward to make the composite chuck close to the glass sheet without contacting it, then the two-stage conveyor runs synchronously and first sends it forward for a distance (the jacket is slightly forward of the paging chuck), and the paging chuck is inserted into the middle of a pair of busbar folding sections, and the folding sections are guided one by one into the accommodating grooves through the cone-shaped end (the jacket opening satisfies that it does not collide with the folding sections at this moment), and then the opening cylinder contracts inward to make the closing groove of the jacket close to the paging chuck, and the second-stage conveyor retracts appropriately to assist in strengthening the vertical upward shaping state of the folding section. Then the second-stage conveyor and the opening cylinder are reset, and the auxiliary lifter controls the pneumatic suction nozzle to descend a certain distance, so that the opening of the EVA gasket is accurately and smoothly fitted on the top of the folding section; then the first-stage conveyor is reset, so that the composite chuck completely retreats to make way for the material discharge space, and finally the auxiliary lifter controls the pneumatic suction nozzle to move further downward, so that the EVA gasket is completely covered on the bus, and the unloaded pneumatic suction nozzle is reset, preparing for the next cycle of material removal.

[0036] As an optimized design for electrification, the above-mentioned first adapter frame is an L-shaped folding plate frame and a strong fixing plate is installed on at least one side to prevent micro-deformation caused by load-bearing from causing production failures and affecting the service life of the equipment. In addition, a repeater for transferring signals and controlling the air source facing the auxiliary lifter, pneumatic suction nozzle, two-stage conveyor, and opening cylinder is connected to the inner side of the top of the first adapter frame, which mainly plays the role of signal line interaction and regularity and optimized control.

[0037] In order to connect and match the positioning consistency between the continuous piece-by-piece production of the EVA gasket and the grouped batch material taking of the conveying and feeding mechanism, as Figure 2 shown, the present invention also provides a relay carrier table 42 parallel to the travel of the EVA tape between the two major mechanisms, and uses this as the transfer station 4 for the EVA gasket. The transfer station is provided with a servo motor and a guide seat 41 for the displacement of the relay carrier table. The servo motor drives the relay carrier table to receive the EVA gaskets from the pneumatic suction cups at three receiving points at preset intervals. The above-mentioned pneumatic suction cups are driven by a straight rail to move back and forth between the cutting station and the transfer station of the EVA gasket. This can meet the requirement of simultaneously pasting multiple EVA gaskets at different points in the same horizontal position during the manufacturing process of photovoltaic modules. A more specific transfer process is as follows. After all the material taking components of the EVA gasket conveying and feeding mechanism empty the three receiving points of the relay carrier table, the relay carrier table will reset so that one of its receiving points is aligned with the position of the pneumatic suction cup. The pneumatic suction cup makes a round trip to complete the loading of one EVA gasket. Then, the relay carrier table is driven to displace so that another receiving point is aligned with the position of the pneumatic suction cup, and the pneumatic suction cup is used to complete the loading of another EVA gasket. The relay carrier table continues to be driven to displace so that the last receiving point is aligned with the position of the pneumatic suction cup and completes the loading of the third EVA gasket. During the operation of these three rounds of loading actions, the actions of the above-mentioned conveying and feeding mechanism are also executed synchronously, including guiding and positioning the corresponding bus bars, shaping the outer shape and releasing them downward to complete the sleeving of the EVA gasket. Then, each material taking component is driven to gather so that the distance between them meets the distance between each receiving point, and then it approaches the relay carrier table to take materials. It can be seen that the operation timing of the two major mechanisms can be well coordinated with the cooperation of the transfer station.

[0038] As Figure 6 and Figure 7The above-mentioned in-label pasting mechanism 6 shown in the figure includes a first horizontal transfer unit 61 and its driving motor 611 and sliding frame 612 connected to the static machine tool crossbeam 14, which are responsible for driving the suffix components (gradually reduced hereinafter) to displace and position horizontally and transversely (set as the X-axis) on the machine tool. The second horizontal transfer unit 62 and its slide rail main body 621 and slide table 622 connected to the sliding frame 612 are responsible for driving the suffix components to displace and position horizontally and longitudinally (set as the Y-axis) on the machine tool. The lifter 63 and its second adapter frame 631 connected to the slide table 622 are responsible for driving the suffix components to displace and position vertically (set as the Z-axis) on the machine tool. The steering unit 64 connected to the platform plate 6311 of the second adapter frame 631 is responsible for driving the suffix components to rotate and position adjustably in the radial direction of a vertical axis in the X-Y-Z coordinate system. The swing direction-changing unit 65 connected to the output shaft of the steering unit below the platform plate 6311 is used to enable the swing rod therein to rotate 180 degrees around a certain horizontal axis and always remain parallel to the bottom glass sheet on the basis of its own main body positioning. And the label pasting unit 66 connected to the outer end of the swing rod 651 of the swing direction-changing unit 65. The label pasting unit 66 is driven to suck the label to be pasted at the material taking station, and caters to the edge of the double-layer glass sheet of the photovoltaic module to paste the label between the glass sheets. The transplanting and positioning of the first four axes above are common settings of various industrial control devices, so the detailed drawings and basic operation descriptions are omitted. However, the steering unit is convenient to meet the pasting requirements above one side of the glass sheet, and the design of the swing direction-changing unit meets the actual working condition requirements of feeding the label face up and pasting it face down, which is the main innovative design of this in-label pasting mechanism.

[0039] As Figure 6 As shown in the figure, the above-mentioned swing direction-changing unit 65 is provided with a pneumatically driven turntable 652, and a clamp 653 is provided at the rotating shaft of the turntable. The inner end of the swing rod 651 is inserted and fixed in the clamp 653 and is controlled to rotate accordingly. The outer end of the swing rod 651 is integrally connected to the label pasting unit 66. Thus, the label pasting unit 66 can be driven by the swing direction-changing unit 65 to flip 180 degrees along the rotation center axis of the turntable. Combining with the structural design of the label pasting unit itself, it can pick up and adsorb the label to be pasted from top to bottom at the material taking station, and be driven to change the orientation of the label, and perform the label pasting action from bottom to top at the required label pasting position. Thus, it more truly simulates the state of manual operation. In particular, to strengthen the accuracy (i.e., levelness) of the positioning of the swing rod after each controlled turn, the swing direction-changing unit is provided with inverted-mounted limit convex rods at the upper positions on both sides of the turntable 652. Then the flipping range of the swing rod is limited to the rod body touching the limit convex rods, and thus the inertia is overcome and the positioning accuracy is strengthened.

[0040] More specifically, the labeling unit 66 is composed of a base plate 661, a label adsorption plate 662, and a buffer spring 663. The label adsorption plate 662 is mounted on the bottom side of the base plate 661, and the buffer spring 664 is clamped between the two plates to maintain a propping state. A number of guiding and sliding groups 664 are also provided around the buffer spring between the two plates, so as to maintain the parallel state of the relative movement of the two plates, and enable the label adsorption plate to obtain a buffer stroke during material taking and pasting, avoiding the damage of the reaction force to the horizontal state and durability of the swing rod, and reducing the operation noise at the same time. An air channel is arranged inside the above-mentioned label adsorption plate 662. One end of the air channel is externally connected to a gas source, and the other end of the air channel is formed into air holes facing the glass sheet supporting plate on the material taking panel 6A, which are used to firmly position the label during label taking, flipping, material transporting, and pasting, and prevent situations such as falling off and displacement.

[0041] In addition, as Figure 6 shown, the second adapter bracket 631 is formed into an L-shaped folding plate bracket and is provided with a triangular reinforcement plate for maintaining the horizontal of the platform plate. A negative pressure gauge 67 for monitoring whether the label is adsorbed in place is also provided at the edge of its platform plate. The detection probe of the negative pressure gauge is connected to the above-mentioned air channel. During the material taking process, if the label is accurately adsorbed, the air holes are blocked and the air channel is in a negative pressure state; if the label is not taken normally or some air holes are in a leaking state, the negative pressure gauge detects an imbalance in negative pressure, and the signal is fed back for the equipment operation system to refer to.

[0042] In summary, from the introduction of the multi-functional integrated machine solution of the present invention and the detailed description of the embodiments, this solution has substantial features and progressiveness: it optimally integrates multiple process links into a body frame, and various mechanisms for EVA gasket blanking, feeding, transporting and placing materials, and attaching labels between double glass sheets are distributed and set to operate in parallel, improving the qualified rate of each process link, and greatly shortening the process time consumed by the repeated circulation and correct fixation of the semi-finished photovoltaic modules. The processing cycle of the semi-finished photovoltaic modules from entering the body frame to leaving is reduced to 13 seconds.

[0043] In addition to the above embodiments, the present invention can also have other implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A multi-functional integrated machine for photovoltaic module production, having a body frame for a technological process link in a production line, characterized in that: The machine frame corresponds to the semi-finished photovoltaic modules that are transferred in, and is equipped with an EVA gasket punching and feeding mechanism, an EVA gasket carrying and unloading mechanism, a label printer, an internal labeling mechanism and an industrial control air source assembly. The EVA gasket punching and feeding mechanism is arranged on the inner front side of the machine frame, and continuously processes the EVA gaskets that are set into the busbars of the semi-finished photovoltaic modules. The EVA gasket carrying and unloading mechanism is installed above the semi-finished photovoltaic modules based on a machine bed crossbeam in the machine frame, and is controlled to move back and forth between the supply and return mechanisms. The inner label sticking mechanism is located between the material station and the bus, and is suspended above the outer side of the semi-finished photovoltaic module based on a static machine tool beam in the machine body frame. The label printer is arranged on the inner rear side of the machine body frame and close to the inner label sticking mechanism. The inner label sticking mechanism is controlled to absorb the label and cater to the semi-finished photovoltaic module. All mechanisms and label printers are connected to the industrial control air source assembly through the bus and operate in collaboration to complete the placement of EVA gaskets at preset positions of semi-finished photovoltaic modules and the attachment of labels between glass sheets within one process cycle.

2. The multifunctional integrated machine for photovoltaic module production according to claim 1, characterized in that: The EVA gasket punching and feeding mechanism includes a material strip roll rack, a punching assembly, a cutting assembly and a feeding assembly positioned sequentially along the material feeding direction. The EVA material strip is guided into the punching assembly. The punching assembly is provided with a drill bit with a pressure sleeve driven by a punching cylinder. The cutting assembly is provided with a controlled lifting and cutting cutter near the end of the feeding assembly. The feeding assembly is provided with a straight rail and a pneumatic suction cup for sucking the cut EVA gasket.

3. The multifunctional integrated machine for photovoltaic module production according to claim 2, wherein: The pneumatic suction cup is driven by a straight rail to travel back and forth between the cutting station and the transfer station of the EVA gasket. The outer end of the EVA material strip is periodically pressed and positioned by the pneumatic suction cup, and is cut into the EVA gasket in the pressed state of the pneumatic suction cup.

4. The multifunctional integrated machine for photovoltaic module production according to claim 2, characterized in that: A relay platform parallel to the travel of the EVA material belt is provided on the side of the loading component close to the EVA gasket carrying and unloading mechanism, and the relay platform is driven by a servo motor to receive and negatively position the EVA gasket from the pneumatic suction cup at three receiving points at preset intervals.

5. The multifunctional integrated machine for photovoltaic module production according to claim 1, characterized in that: The EVA gasket carrying and unloading mechanism includes three main lifters mounted on the machine bed crossbeam, a first adapter frame mounted on the slider corresponding to each main lifter, a material picking assembly mounted on the front end of the first adapter frame, and a straightening assembly mounted on the bottom side of the first adapter frame, wherein the material picking assembly is provided with a secondary lifter and a pneumatic suction nozzle mounted on its slider, the pneumatic suction nozzle is linked to move and absorb or release the EVA gasket; the straightening assembly is provided with a composite chuck that corresponds to the bus bar positioned on the glass sheet and accommodates the EVA gasket set, and a two-stage conveyor that drives the composite chuck to operate in sections.

6. The multifunctional integrated machine for photovoltaic module production according to claim 5, characterized in that: The fixed part of the auxiliary lifter is connected to the front end of the first adapter frame, and the sliding part of the auxiliary lifter is exposed from the first adapter frame and is air-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 gasket and avoid the central opening of the EVA gasket.

7. The multi-functional integrated machine for photovoltaic module production according to claim 5, characterized in that: The straightening assembly is provided with a first-stage conveyor at the bottom of the first adapter frame, a second-stage conveyor is provided at the bottom of the telescopic arm of the first-stage conveyor, an opening cylinder which is controlled to open and close parallel to the direction of the machine bed beam is provided at the bottom of the telescopic arm of the second-stage conveyor, and the composite chuck comprises a paging chuck located in the middle and a pair of jackets which are separated and leaning against each other on both sides, wherein the paging chuck is connected to the telescopic arm of the first-stage conveyor and is driven in linkage, the front end of the paging chuck is configured as a cone head shape and the two wings of the cone root are provided with accommodating grooves corresponding to the upward flipping positioning spacing of the bus; the jacket is connected to the opening cylinder and is driven in linkage opening and closing, the two-stage conveyor drives the entire composite chuck or a part of it to adjust the positioning, each jacket is provided with a step-shaped closing groove toward the paging chuck, and when the jacket is closed, the folded section of the bus remains vertically upward.

8. The multifunctional integrated machine for photovoltaic module production according to claim 1, characterized in that: The internal labeling mechanism includes a first horizontal transfer unit and a sliding frame connected to the static machine tool crossbeam, a second horizontal transfer unit and a slide table connected to the sliding frame, a lifter and a second adapter frame connected to the slide table, a steering unit connected to the platform plate of the second adapter frame, a swing steering unit connected to the output shaft of the steering unit below the platform plate, and a labeling unit connected to the outward end of the swing rod of the swing steering unit. The labeling unit is driven to absorb the label to be attached at the label printer, and caters to the edge of the double-layer glass sheet of the photovoltaic module to attach the label between the glass sheets.

9. The multifunctional integrated machine for photovoltaic module production according to claim 8, characterized in that: The swing steering unit is provided with an air-driven turntable, and a clamp is provided at the rotating shaft of the turntable. The inward end of the swing rod is inserted and fixed in the clamp and rotates controlledly, while the outward end of the swing rod is assembled with the labeling unit as a whole and flips along the rotating center axis 180 of the turntable.

10. The multi-functional integrated machine for photovoltaic module production according to claim 8, characterized in that: The labeling unit is composed of a base plate, a label adsorption plate and a buffer spring, wherein the label adsorption plate is mounted on the bottom side of the base plate and the buffer spring is clamped between the two plates to maintain a supporting state, and a plurality of guide sliding groups are arranged between the two plates around the buffer spring to maintain the parallel state of relative movement of the two plates; an air channel is arranged inside the label adsorption plate, one end of the air channel is connected to an external air source, and the other end of the air channel is formed as an air hole on the material taking panel.

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