Full-automatic off-line laser-assisted sintering machine for photovoltaic silicon wafer

Abstract

The utility model provides a full-automatic off-line laser-assisted sintering machine for photovoltaic silicon wafers, which comprises a supporting platform, a material loading turntable, a turntable driving mechanism, a feeding platform, a discharging platform, a feeding and discharging mechanism, a visual inspection mechanism and a laser sintering mechanism, a plurality of material carrying platforms corresponding to the visual detection mechanism, the laser sintering mechanism and the feeding and discharging mechanism in position are arranged on the periphery of the material carrying rotary disc, the material carrying platforms are provided with product fixing mechanisms, and the feeding and discharging mechanism comprises a linear carrying module and a carrying supporting plate arranged on the linear carrying module. A first feeding suction cup, a second feeding suction cup and a discharging suction cup which are arranged in a straight line are arranged on the carrying supporting plate, a product positioning platform is further arranged between the feeding platform and the discharging platform, and a product positioning mechanism is arranged on the product positioning platform. According to the utility model, secondary sintering of a photovoltaic product is realized, the photoelectric conversion efficiency of the product is improved, the electrical performance test yield of the product is ensured, the processing efficiency is high, the structure is simple, and the manufacturing cost is low.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic silicon wafer processing, in particular to a photovoltaic silicon wafer full-automatic off-line laser-assisted sintering machine. Background Art

[0002] Existing photovoltaic silicon wafers need to be sintered at high temperature during processing. Sintering is to sinter the electrodes printed on the surface of the silicon wafer at high temperature, so that the electrodes and the silicon wafer itself form ohmic contact, improve the open circuit voltage and fill factor of the silicon wafer, and make the contact of the electrode have resistance characteristics to achieve high conversion efficiency. The sintering process can also facilitate the diffusion of -H introduced by the PECVD process into the body, which can play a good body passivation role. After the photovoltaic silicon wafer is sintered, a layer of silicon oxide will form on the surface of the cell, but the silicon oxide layer is thick and will affect the efficiency of the cell. Utility Model Content

[0003] In order to solve the problem in the prior art that photovoltaic silicon wafers affect battery efficiency after sintering, the utility model provides a photovoltaic silicon wafer fully automatic off-line laser-assisted sintering machine capable of rapid secondary sintering.

[0004] The utility model provides a fully automatic off-line laser-assisted sintering machine for photovoltaic silicon wafers, comprising a supporting platform, a loading turntable arranged at the upper end of the supporting platform, a turntable driving mechanism arranged below the supporting platform for driving the loading turntable to rotate, a loading platform and a unloading platform arranged on the supporting platform and located on one side of the loading turntable, an loading and unloading mechanism arranged on the supporting platform and located on one side of the loading platform and the unloading platform, and a visual inspection mechanism and a laser sintering mechanism arranged on the supporting platform and located above the loading turntable. The outer periphery of the loading turntable is provided with a plurality of loading platforms corresponding to the positions of the visual inspection mechanism, the laser sintering mechanism and the loading and unloading mechanism, the loading platform is provided with a product fixing mechanism, the loading and unloading mechanism comprises a linear conveying module and a conveying support plate arranged on the linear conveying module, a first loading suction cup, a second loading suction cup and a unloading suction cup arranged in a line are provided on the conveying support plate, a product positioning platform is also provided between the loading platform and the unloading platform, and a product positioning mechanism is provided on the product positioning platform.

[0005] As a further improvement of the present invention, the product fixing mechanism includes a material loading support plate and a product bracket arranged above the material loading support plate, and the product bracket is provided with a plurality of vacuum adsorption holes.

[0006] As a further improvement of the present invention, the product positioning mechanism includes a positioning support plate, a product positioning plate arranged above the positioning support plate, and a plurality of L-shaped clamps arranged between the positioning support plate and the product positioning plate and used to clamp the product, and the product positioning plate is provided with a lifting mechanism.

[0007] As a further improvement of the utility model, a clamping jaw retracting mechanism is provided on the positioning support plate, and the clamping jaw retracting mechanism includes a clamping jaw turntable and a plurality of L-shaped connecting rods, linear guide rails and sliders corresponding to the number of the clamping jaws, one end of the L-shaped connecting rod is hinged to the periphery of the clamping jaw turntable, and the other end of the L-shaped connecting rod is hinged to the slider, a plurality of linear guide rails are evenly distributed on the periphery of the clamping jaw turntable, the slider is mounted on the linear guide rail, and one end of the L-shaped clamping jaw is fixed to the slider.

[0008] As a further improvement of the present invention, the loading platform includes a loading support plate and a loading rack arranged on the periphery of the loading support plate, and a loading lifting mechanism is provided at the lower end of the loading support plate.

[0009] As a further improvement of the present invention, the material unloading platform includes a material unloading support plate and a material unloading rack arranged on the periphery of the material unloading support plate, and a material unloading lifting mechanism is provided at the lower end of the material unloading support plate.

[0010] As a further improvement of the present invention, the laser sintering mechanism includes a first laser sintering mechanism and a second laser sintering mechanism.

[0011] As a further improvement of the present invention, the turntable driving mechanism is a DD motor.

[0012] As a further improvement of the present invention, the visual detection mechanism includes a CCD and a visual lateral linear module that drives the CCD to move left and right.

[0013] As a further improvement of the present invention, the visual inspection mechanism and the laser sintering mechanism are both fixedly connected to the support platform via a connecting bracket.

[0014] The beneficial effects of the utility model are as follows: the utility model can realize the secondary sintering of the product by arranging the laser sintering mechanism, thereby improving the photoelectric conversion efficiency of the product and the yield rate of the electrical performance test, and the continuity of the product processing is ensured by the linear transport module and the first loading suction cup, the second loading suction cup and the unloading suction cup, thereby greatly improving the processing efficiency of the secondary sintering of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a fully automatic off-line laser-assisted sintering machine for photovoltaic silicon wafers of the utility model;

[0016] Figure 2 yes Figure 1 A schematic diagram of the structure from another angle;

[0017] Figure 3It is a structural schematic diagram of a material loading turntable of a photovoltaic silicon wafer fully automatic off-line laser-assisted sintering machine of the utility model;

[0018] Figure 4 This is a structural schematic diagram of a product positioning platform of a photovoltaic silicon wafer fully automatic off-line laser-assisted sintering machine of the utility model;

[0019] Figure 5 This is a structural schematic diagram of a product positioning mechanism of a photovoltaic silicon wafer fully automatic off-line laser-assisted sintering machine of the utility model;

[0020] Figure 6 It is a structural schematic diagram of a feeding mechanism of a photovoltaic silicon wafer fully automatic off-line laser-assisted sintering machine of the utility model;

[0021] Figure 7 The utility model is a schematic diagram of the loading and unloading mechanism structure of a photovoltaic silicon wafer fully automatic off-line laser-assisted sintering machine.

[0022] Figure markings: 1-support platform; 2-loading turntable; 3-turntable driving mechanism; 4-loading platform; 5-unloading platform; 6-loading and unloading mechanism; 7-product positioning mechanism; 8-visual inspection mechanism; 9-laser sintering mechanism; 21-loading support plate; 22-product bracket; 41-loading support plate; 42-loading rack; 43-loading lifting mechanism; 61-conveying support plate; 62-first loading suction cup; 63-second loading suction cup; 64-unloading suction cup; 71-positioning support plate; 72-product positioning plate; 73-L-type clamp; 74-lifting mechanism; 75-clamp turntable; 76-L-type connecting rod; 77-linear guide rail; 78-slider. DETAILED DESCRIPTION

[0023] In the description of the present invention, it should be understood that if there are descriptions involving orientation, such as orientations or positional relationships indicated by up, down, front, back, left, and right, the orientation description may be based on the orientation or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0024] In the description of the utility model, if there is a description of quantity, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of first or second, it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0026] like Figures 1 to 7 As shown, the utility model discloses a photovoltaic silicon wafer fully automatic off-line laser assisted sintering machine, comprising a support platform 1, a loading turntable 2 arranged at the upper end of the support platform 1, a turntable driving mechanism 3 arranged below the support platform 1 for driving the loading turntable 2 to rotate, a loading platform 4 and a unloading platform 5 arranged on the support platform 1 and located on one side of the loading turntable 2, an loading and unloading mechanism 6 arranged on the support platform 1 and located on one side of the loading platform 4 and the unloading platform 5, and a visual inspection mechanism 8 and a laser sintering mechanism arranged on the support platform 1 and located above the loading turntable 2. The loading platform is provided with a product fixing mechanism, and the loading and unloading mechanism 6 includes a linear transport module and a transport support plate 61 arranged on the linear transport module, and the transport support plate 61 is provided with a first loading suction cup 62, a second loading suction cup 63 and a unloading suction cup 64 arranged in a line, and a product positioning platform is also provided between the loading platform 4 and the unloading platform 5, and a product positioning mechanism 7 is provided on the product positioning platform.

[0027] During operation, photovoltaic silicon wafer products are manually stacked and loaded offline on the loading platform 4. The first loading suction cup 62 adsorbs the product and places it on the product positioning platform, and the product position is adjusted by the product positioning mechanism 7. Then the second loading suction cup 63 adsorbs the positioned product and moves it to the loading platform of the corresponding station and fixes it through the product fixing mechanism. Then the loading turntable 2 rotates and rotates the loading platform with the product to the bottom of the visual inspection mechanism 8 for visual photography inspection. At the same time, another empty loading platform will rotate to the position of the loading and unloading mechanism 6 to wait for product loading. After visual inspection, After the measurement, the corresponding loading platform will rotate to the lower end of the laser sintering mechanism 9 for laser sintering. During laser sintering, a pressing mechanism will hold the product and contact the product through the probe to energize and pressurize it. Finally, it will rotate to the loading and unloading mechanism 6 station. At this time, the unloading suction cup 64 absorbs the product and then moves horizontally to the top of the unloading platform 5 for product unloading. The first loading suction cup 62, the second loading suction cup 63 and the unloading suction cup 64 arranged on the same linear module can simultaneously realize product loading and positioning, product unloading and product loading on the same loading platform, thereby improving the product unloading speed and ensuring the processing efficiency.

[0028] The utility model can realize secondary sintering of the product by setting up the laser sintering mechanism 9, thereby improving the photoelectric conversion efficiency of the product and the yield rate of the electrical performance test, and ensures the continuity of product processing through the linear transport module and the first loading suction cup 62, the second loading suction cup 63 and the unloading suction cup 64, thereby greatly improving the processing efficiency of the secondary sintering of the product.

[0029] In the present invention, the product fixing mechanism comprises a material loading support plate 21 and a product support 22 arranged above the material loading support plate 21, and the product support 22 is provided with a plurality of vacuum adsorption holes for adsorbing and fixing the product.

[0030] In the present utility model, the product positioning mechanism 7 includes a positioning support plate 71, a product positioning plate 72 disposed above the positioning support plate 71, and a plurality of L-shaped clamping claws 73 disposed between the positioning support plate 71 and the product positioning plate 72 and used to clamp the product. The product positioning plate 72 is provided with a lifting mechanism 74. The first loading suction cup 62 transfers the product to the product positioning plate 72, the lifting mechanism 74 drives the product positioning plate 72 to descend, and then the plurality of L-shaped clamping claws 73 clamp the product to adjust the angle of the product. The product positioning plate 72 is also provided with an adsorption mechanism, which is adsorbed and fixed after positioning is completed, and then the product positioning plate 72 rises to wait for the second loading suction cup 63 to pick up the material.

[0031] In the utility model, the positioning support plate 71 is provided with a clamping claw extension mechanism, which includes a clamping claw rotating disk 75 and a plurality of L-shaped connecting rods 76 corresponding to the number of the clamping claws, a linear guide rail 77 and a slider 78, one end of the L-shaped connecting rod 76 is hinged to the periphery of the clamping claw rotating disk 75, and the other end of the L-shaped connecting rod 76 is hinged to the slider 78, a plurality of the linear guide rails 77 are evenly distributed on the periphery of the clamping claw rotating disk 75, the slider 78 is mounted on the linear guide rail 77, and one end of the L-shaped clamping claw 73 is fixed on the slider 78. The clamping claw rotating disk 75 and the plurality of L-shaped clamping claws 73 drive the plurality of L-shaped clamping claws 73 to clamp simultaneously, and the synchronization is good and the structure is simple, which is convenient for control.

[0032] In the present invention, the loading platform 4 includes a loading support plate 41 and a loading rack 42 arranged on the periphery of the loading support plate 41, and a loading lifting mechanism 43 is arranged at the lower end of the loading support plate 41. The loading lifting mechanism 43 is a screw mechanism, so that more products can be stacked, and then the loading height of the product is ensured by the loading lifting mechanism 43, which is convenient for the loading suction cup to absorb. A guide plate inclined outward is also arranged at the upper end of the loading rack 42 to facilitate manual placement of products.

[0033] In the present invention, the unloading platform 5 includes an unloading support plate and an unloading rack arranged on the periphery of the unloading support plate, and the lower end of the unloading support plate is provided with an unloading lifting mechanism. The upper end of the loading rack 42 is also provided with a guide plate inclined outward to facilitate the placement of processed products. Its structure is the same as that of the loading platform 4, and better unloading products can be stacked.

[0034] In the present invention, the laser sintering mechanism 9 includes a first laser sintering mechanism and a second laser sintering mechanism. One end of the product can be sintered by the first laser sintering mechanism, and then the other end of the product can be sintered by the second laser sintering mechanism, which can increase the sintering speed of the block product and improve the product processing efficiency.

[0035] In the utility model, the turntable driving mechanism 3 is a DD motor, which has a simple structure and is easy to control.

[0036] In the present invention, the visual inspection mechanism 8 includes a CCD and a visual lateral linear module that drives the CCD to move left and right. The visual lateral linear module can drive the CCD to move left and right, thereby achieving the shooting of products of different sizes, and having better versatility.

[0037] In the present invention, the visual inspection mechanism 8 and the laser sintering mechanism 9 are both fixedly connected to the supporting platform 1 via a connecting bracket.

[0038] The utility model not only realizes the secondary sintering of photovoltaic products, improves the photoelectric conversion efficiency of the products, and ensures the electrical performance test yield of the products, but also has high processing efficiency, simple structure and low manufacturing cost.

[0039] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A fully automatic off-line laser-assisted sintering machine for photovoltaic silicon wafers, characterized in that: The material handling device is a material handling device for a material handling apparatus and a material handling device for a material handling apparatus, wherein the loading and unloading platforms are located on the support platform and one side of the loading and unloading platforms, and the loading and unloading mechanisms are located on the support platform and one side of the loading and unloading platforms, and the visual inspection mechanism and the laser sintering mechanism are located on the support platform and above the loading and unloading platforms. The loading and unloading platforms are provided at the periphery of the material handling turntable with a plurality of loading platforms corresponding to the positions of the visual inspection mechanism, the laser sintering mechanism and the loading and unloading mechanisms, the loading platform is provided with a product fixing mechanism, the loading and unloading mechanism comprises a linear conveying module and a conveying support plate provided on the linear conveying module, a first loading suction cup, a second loading suction cup and a unloading suction cup arranged in a line are provided on the conveying support plate, a product positioning platform is provided between the loading platform and the unloading platform, and a product positioning mechanism is provided on the product positioning platform.

2. The photovoltaic silicon wafer fully automatic off-line laser-assisted sintering machine according to claim 1, characterized in that: The product fixing mechanism comprises a material carrying support plate and a product support arranged above the material carrying support plate, and the product support is provided with a plurality of vacuum adsorption holes.

3. The photovoltaic silicon wafer fully automatic off-line laser-assisted sintering machine according to claim 1, characterized in that: The product positioning mechanism includes a positioning support plate, a product positioning plate arranged above the positioning support plate, and a plurality of L-shaped clamping claws arranged between the positioning support plate and the product positioning plate and used for clamping the product. The product positioning plate is provided with a lifting mechanism.

4. The photovoltaic silicon wafer fully automatic off-line laser-assisted sintering machine according to claim 3, characterized in that: A clamping jaw retracting mechanism is provided on the positioning support plate, and the clamping jaw retracting mechanism includes a clamping jaw rotating disk and a plurality of L-shaped connecting rods, linear guide rails and sliders corresponding to the number of the clamping jaws. One end of the L-shaped connecting rod is hinged to the periphery of the clamping jaw rotating disk, and the other end of the L-shaped connecting rod is hinged to the slider. The plurality of linear guide rails are evenly distributed on the periphery of the clamping jaw rotating disk, and the slider is mounted on the linear guide rail, and one end of the L-shaped clamping jaw is fixed to the slider.

5. The photovoltaic silicon wafer fully automatic off-line laser-assisted sintering machine according to claim 1, characterized in that: The feeding platform comprises a feeding support plate and a feeding frame arranged at the periphery of the feeding support plate, and a feeding lifting mechanism is arranged at the lower end of the feeding support plate.

6. The photovoltaic silicon wafer fully automatic off-line laser-assisted sintering machine according to claim 1, characterized in that: The material unloading platform comprises a material unloading support plate and a material unloading frame arranged at the periphery of the material unloading support plate, and a material unloading lifting mechanism is arranged at the lower end of the material unloading support plate.

7. The photovoltaic silicon wafer fully automatic off-line laser-assisted sintering machine according to claim 1, characterized in that: The laser sintering mechanism includes a first laser sintering mechanism and a second laser sintering mechanism.

8. The photovoltaic silicon wafer fully automatic off-line laser-assisted sintering machine according to claim 1, characterized in that: The turntable driving mechanism is a DD motor.

9. The photovoltaic silicon wafer fully automatic off-line laser-assisted sintering machine according to claim 1, characterized in that: The visual detection mechanism includes a CCD and a visual lateral linear module that drives the CCD to move left and right.

10. The photovoltaic silicon wafer fully automatic off-line laser-assisted sintering machine according to claim 1, characterized in that: The visual detection mechanism and the laser sintering mechanism are both fixedly connected to the support platform via a connecting bracket.

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