Box type supporting platform for laser edge cleaning equipment

Abstract

The utility model relates to a box type supporting platform for laser edge cleaning equipment, which comprises a box body, a cavity is arranged in the box body, an opening is arranged at the top of the cavity, and a tail gas pipe joint communicated with the cavity and the outside is arranged on the box body and is used for being connected with an external negative pressure collecting device. According to the box type supporting platform, except for the top opening, the box body is of a closed structure, when edge cleaning work is carried out, a photovoltaic battery piece is placed on the top of the cavity in the mode that the film face faces downwards, laser beams act on the film face of the photovoltaic battery piece from top to bottom, dust is limited in the cavity, and therefore the edge cleaning work is carried out. And the tail gas is discharged to the negative pressure collecting device through the tail gas pipe joint, so that the dust escape is reduced, and the pollution of the dust to a photovoltaic battery piece, equipment and an indoor environment is avoided. And meanwhile, scattering laser generated by the edge-cleaning laser is completely located in the cavity, so that the damage of the scattering laser to equipment and a human body can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to laser edge cleaning equipment technical field especially relates to a box type support platform for laser edge cleaning equipment. BACKGROUND

[0002] The photovoltaic cell piece uses laser edge cleaning technology when processing, and a key component is a galvanometer, that is, a scanning head. The edge cleaning principle is that a laser beam of a high-power laser passes through the galvanometer or a focusing mirror, the light beam is processed, and then a motor is used to realize regular movement of a laser spot, so that the light spot is used to remove all film layers of an invalid area of the photovoltaic cell piece, and insulation and aesthetic effects are realized. This processing technology inevitably produces a large amount of dust, so that the photovoltaic cell piece and the inside of the equipment are polluted by the dust. In addition, scattered laser produced when the high-power laser beam acts on the film layer also easily leads to safety accidents.

[0003] The photovoltaic cell piece bearing platform carried by the edge cleaning equipment mainly has a platform support type, a frame suspension type, an air floatation suspension type, and a brush support type. Due to differences in design positions of scanning heads of different equipment, the design mode of a matched platform and a dust collection cover is determined.

[0004] In the platform support type design, the scanning head is usually installed above the photovoltaic cell piece, and the laser beam acts on the photovoltaic cell piece from top to bottom. The galvanometer body makes the laser beam move according to a certain rule through program setting, and then an external motor drives the scanning head and the platform, so that the scanning head moves relative to the platform in two directions of X-axis and Y-axis, and laser edge cleaning processing of the photovoltaic cell piece is realized. When small-size photovoltaic cell pieces are processed, an external motor is generally not needed, and the galvanometer body can make the laser beam complete movement in two directions of X-axis and Y-axis, so that laser processing can be realized within the processing range of the scanning head. The size of the processing area is determined by the scanning head and a matched field mirror.

[0005] The advantage of the platform support type design is that the equipment can adapt to processing of large-size photovoltaic cell pieces through cooperation of external shafts, and the laser focus point is almost not affected by the flatness of the glass and the supporting device because the photovoltaic cell piece is placed on the platform. However, the disadvantage is that the laser beam can cause the platform to be burned, and the platform can be worn and the flatness of the platform can be reduced after long-time processing of the photovoltaic cell piece. In addition, in the design scheme, the scanning head can also be installed below the photovoltaic cell piece, so that the edge cleaning area of the photovoltaic cell piece is suspended, and the laser beam acts on the film layer from bottom to top. The disadvantage is that dust and scattered laser cannot be well controlled.

[0006] The frame suspension type design is not limited to the installation position of the scanning head, and the laser beam can be easily realized from top to bottom and from bottom to top. However, a finger air cylinder is usually used in the design, and once the horizontal degree between the finger air cylinders does not meet the requirements, the photovoltaic cell piece is easily broken.

[0007] Air suspension and brush support are typically used for small equipment. However, these two solutions are rarely used for edge cleaning equipment for large-scale photovoltaic cells due to airflow disturbances that increase dust escape and the brush strength and laser tolerance.

[0008] In summary, although the laser beam area is covered by a corresponding dust hood in each of the aforementioned support methods, a fan (axial flow fan, vortex wind force, or turbine fan) generates negative pressure, and the dust is finally filtered and collected by a dust filter, even so, a small amount of dust cannot be avoided from escaping and scattering the laser beam. Utility Model Content

[0009] The technical problem to be solved by the present invention is to provide a box-type support platform for laser edge cleaning equipment to reduce the pollution of dust to photovoltaic cells, equipment and indoor environment; at the same time, it reduces the damage of scattered laser to equipment and also avoids the harm of laser to human body during process debugging to a large extent.

[0010] The utility model is implemented in this way: a box-type support platform for laser edge cleaning equipment is provided, comprising a box body, a cavity is provided inside the box body, and an opening is provided at the top of the cavity; an exhaust pipe joint is installed on the box body, one end of the exhaust pipe joint is connected to the cavity, and the other end is used to be connected to an external negative pressure collection device; a device for supporting or fixing the photovoltaic cell to be cleaned is installed on the outer side surface of the top of the box body.

[0011] Furthermore, a plurality of supporting devices are installed on the outer side surface of the top of the box body and are distributed at intervals along the periphery of the box body. The supporting devices extend into the opening to support the photovoltaic cells to be cleaned.

[0012] Furthermore, the supporting device includes a telescopic mechanism and a supporting tongue, the supporting tongue is fixedly connected to the power output end of the telescopic mechanism, and the telescopic mechanism can drive the supporting tongue to extend into the opening to support the photovoltaic cell to be cleaned.

[0013] Furthermore, the telescopic mechanism includes a cylinder and a slide, the slide is fixedly connected to the telescopic rod of the cylinder, and the support tongue is fixed on the slide.

[0014] Furthermore, the box-type support platform also includes a controller, which is electrically connected to the telescopic mechanism. The controller can receive the current position signal of the laser beam from the host computer, and the controller can control the telescopic mechanism to drive the support tongue close to the laser beam to retract to avoid laser beam irradiation.

[0015] Furthermore, a plurality of fastening devices are installed on the outer side surface of the top of the box body and are spaced apart along the periphery of the box body. The fastening devices extend into the opening and can clamp or fix the photovoltaic cell to be cleaned.

[0016] Further, the inner side wall and the bottom wall of the cavity are frosted to increase roughness.

[0017] Further, the cross-sectional shape of the box and / or the cavity is rectangular.

[0018] Further, the four outer sides of the box are provided with tail gas pipe joints.

[0019] Compared with the prior art, the box type supporting platform for the laser edge cleaning equipment has the following advantages: the box is a closed structure except for the top of the cavity, the photovoltaic cell to be cleaned is placed on the top of the cavity with the film surface downward, the laser beam acts on the film surface of the photovoltaic cell from top to bottom, the dust produced in the edge cleaning is limited in the cavity below the photovoltaic cell, and then is discharged to the negative pressure collecting device through the tail gas pipe joint, the escape of the dust is reduced, and thus the pollution of the dust to the photovoltaic cell, the equipment and the indoor environment is avoided. Meanwhile, the scattered laser produced by the edge cleaning laser is completely in the range of the cavity, the damage of the scattered laser to the equipment is reduced, and the harm of the laser to the human body during the process debugging is avoided to a large extent. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a front view of the box type supporting platform according to the first embodiment of the present application;

[0021] Figure 2 is a top view of the box type supporting platform according to the second embodiment of the present application;

[0022] Figure 3 is a front view of Figure 2 ;

[0023] Figure 4 is a left view of Figure 2 ;

[0024] Figure 5 is a schematic view of the box type supporting platform according to Figure 2 ;

[0025] Figure 6 is a schematic view of the box type supporting platform according to Figure 2 ; DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0027] Embodiment one

[0028] Please refer to Figure 1 , shows a box type support platform for laser edge cleaning equipment provided by the embodiment, comprising a box body 1, the box body 1 has a cavity inside, the cavity top has an opening 11, the box body 1 is provided with a tail gas pipe joint 2, one end of the tail gas pipe joint 2 is communicated with the cavity, and the other end is used for connecting with an external negative pressure collecting device.

[0029] The box type support platform provided by the embodiment, the box body 1 is a closed structure except that the top of the cavity is an opening 11, when the edge cleaning work is carried out, the photovoltaic cell piece a to be cleaned is placed on the top of the box body 1 in a film surface downward manner, the laser beam acts on the film surface of the photovoltaic cell piece a from top to bottom, the dust produced by the edge cleaning is limited in the cavity below the photovoltaic cell piece a, and then is discharged to the negative pressure collecting device through the tail gas pipe joint 2, so that the escape of the dust is reduced, and the pollution of the dust to the photovoltaic cell piece a, the equipment and the indoor environment is avoided. At the same time, the scattering laser generated by the edge cleaning laser is completely in the range of the cavity, so that the damage of the scattering laser to the equipment is reduced, and the harm of the laser to the human body during the process debugging is also avoided to a great extent.

[0030] Preferably, in order to form an air flow carrying the dust with the negative pressure collecting device, the size of the opening 11 can be slightly larger than the shape of the photovoltaic cell piece a, when the photovoltaic cell piece a is laid on the opening 11, a gap can be formed between the photovoltaic cell piece a and the two side edges of the opening 11, so that the external air enters the cavity. Of course, air inlet holes can also be formed on the wall of the box body 1.

[0031] A plurality of supporting blocks 3 for supporting the photovoltaic cell piece a are installed on the outer side of the top of the box body 1, the plurality of supporting blocks 3 are distributed along the circumference of the opening 11 and protrude from the top of the box body 1.

[0032] The photovoltaic cell piece a is attached to the supporting block 3 by its own gravity, compared with the fixing mode of clamping with a clamping jaw, the phenomenon of broken pieces can be avoided, and the difficulty of equipment leveling is reduced. At the same time, since the supporting block 3 protrudes from the top of the box body 1, the gap between the bottom surface of the photovoltaic cell piece a and the edge of the opening 11 can be used for the external air to enter the cavity, which is conducive to forming an air flow carrying the dust produced during laser processing with the negative pressure collecting device.

[0033] Embodiment two

[0034] Please refer to Figures 2 to 4 , shows another box type support platform for laser edge cleaning equipment provided by the embodiment, compared with embodiment one:

[0035] The box 1 top outer side is provided with a plurality of support devices for supporting photovoltaic cell a, each support device comprises a telescopic mechanism, the free end of the telescopic rod of each telescopic mechanism is fixed with a support tongue 4, and the telescopic mechanism can drive the support tongue 4 to extend into or withdraw from the opening 11.

[0036] When the support tongue 4 extends into the opening, the photovoltaic cell a can be carried and stopped at the opening 11 of the cavity, at this time, the photovoltaic cell a is adhered to the support tongue 4 by its own gravity, compared with the fixing mode of clamping by the clamping jaw, the phenomenon of broken pieces can be avoided, and the difficulty of equipment leveling is reduced.

[0037] In the embodiment, the telescopic mechanism comprises a cylinder 5 and a sliding table 6, the sliding table 6 is fixedly connected with the telescopic rod of the cylinder 5, and the support tongue 4 is fixed on the sliding table 6. When the cylinder 5 works, the support tongue 4 can be driven to extend into or withdraw from the opening 11.

[0038] Please refer to Figure 5 After the external collection fan works, the inside of the box 1 will maintain a proper negative pressure environment, fresh air will flow into from the gap between the photovoltaic cell a and the edge of the opening 11, and then carry the dust in the cavity to be discharged to the external negative pressure collection device through the tail gas pipe joint 2. Figure 5 The line segment with an arrow indicates the air flow path inside the box.

[0039] In the embodiment, the cross-sectional shape of the box 1 and the cavity is rectangular, so as to be more matched with the rectangular photovoltaic cell a. In order to make the dust in each corner of the box 1 quickly discharged outward, the four outer sides of the box 1 are all provided with the tail gas pipe joint 2.

[0040] Further, the inner side wall and the bottom wall 12 of the cavity are frosted to increase the roughness and reduce the reflection of laser.

[0041] Please refer to Figure 6 Because the area where the support tongue 4 is located is easy to affect laser processing, the action of the support tongue 4 in the corresponding area during processing can be controlled through the control software. The specific method is that a proper triggering area is virtually generated by software with the support tongue 4 as the center, the corresponding action is triggered when the laser beam enters the triggering area, the support tongue 4 is retracted, and then the support tongue 4 is extended after the laser beam leaves the area. For this purpose, the box support platform of the embodiment is also provided with a controller, the controller is electrically connected with the telescopic mechanism, the controller can receive the current position signal of the laser beam from the upper computer, when the laser beam enters close to a certain support tongue 4, the controller can control the telescopic mechanism to drive the support tongue 4 to retract, so as to avoid the laser beam irradiation (in this process, the support tongue 4 far away from the laser beam is still in the extended state and carries the photovoltaic cell a).

[0042] Embodiment three

[0043] The embodiment provides a box type supporting platform for a laser edge cleaning device, compared with the second embodiment:

[0044] The finger cylinder (not shown in the figure) is adopted instead of the bearing device, and the finger cylinder is opened before the photovoltaic cell a is fed; when the photovoltaic cell a hovers at the opening, the fingers of the finger cylinder are closed to clamp the photovoltaic cell a. It should be noted that the center of the finger cylinder should coincide with the thickness center of the photovoltaic cell a, so as to avoid that the photovoltaic cell a is suspended or pressed when the finger cylinder is closed; once the center deviation is too large, the photovoltaic cell a is easily clamped and broken.

[0045] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A box-type support platform for laser edge cleaning equipment, characterized in that: The invention comprises a box body, wherein the box body has a cavity inside and the top of the cavity has an opening; An exhaust pipe joint is installed on the box body, one end of the exhaust pipe joint is connected to the cavity, and the other end is used to connect to an external negative pressure collection device; The outer side surface of the top of the box body is equipped with a device for supporting or fixing the photovoltaic cell to be cleaned.

2. The box-type support platform according to claim 1, characterized in that: A plurality of supporting devices are installed on the outer side surface of the top of the box body and are distributed at intervals along the periphery of the box body. The supporting devices extend into the opening to support the photovoltaic cells to be cleaned.

3. The box-type support platform according to claim 2, characterized in that: The supporting device includes a telescopic mechanism and a supporting tongue, wherein the supporting tongue is fixedly connected to the power output end of the telescopic mechanism, and the telescopic mechanism can drive the supporting tongue to extend into the opening to support the photovoltaic cell to be cleaned.

4. The box-type support platform according to claim 3, characterized in that: The telescopic mechanism includes a cylinder and a slide, the slide is fixedly connected to the telescopic rod of the cylinder, and the support tongue is fixed on the slide.

5. The box-type support platform according to claim 3, characterized in that: It also includes a controller, which is electrically connected to the telescopic mechanism. The controller can receive a current position signal of the laser beam from the host computer, and can control the telescopic mechanism to drive the support tongue close to the laser beam to retract to avoid laser beam irradiation.

6. The box-type support platform according to claim 1, characterized in that: The outer side surface of the top of the box body is equipped with a plurality of fastening devices distributed at intervals along the periphery of the box body. The fastening devices extend into the opening and can clamp or fix the photovoltaic cell to be cleaned.

7. The box-type support platform according to claim 1, characterized in that: The inner side wall and the bottom wall of the cavity are both frosted to increase the roughness.

8. The box-type support platform according to claim 1, characterized in that: The cross-section of the box and / or cavity is rectangular.

9. The box-type support platform according to claim 8, characterized in that: The four outer sides of the box body are all equipped with tail gas pipe joints.

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