KR20110089540A - Ribbon cutting unit for solar battery module manufacturing apparatus and ribbon cutting apparatus having the same - Google Patents

Abstract

PURPOSE: A ribbon cutting unit for photovoltaic module production and a cutting apparatus including the same are provided to effectively cut an exposed ribbon from the end part of a string connected in a unit of a plurality of cells by a ribbon with a simple structure in a process, thereby enabling to have a required level of exposed length. CONSTITUTION: An align unit(200) aligns a string(4) to a cutting work position by touching with a connected string as a unit of a plurality of cells by a ribbon. A cutting unit(300) is placed adjacent to the align unit in order to cut an exposed ribbon(3a) in a predetermined length from the end part of the aligned string in the cutting work position. The cutting unit includes a rotary cutter and a rotation driving part. The rotary cutter cuts the exposed ribbon. The rotation driving part rotates the rotary cutter.

Description

Ribbon cutting unit for photovoltaic module production equipment and cutting apparatus having same {Ribbon cutting unit for solar battery module manufacturing apparatus and ribbon cutting apparatus having the same}

The present invention relates to a ribbon cutting unit for a photovoltaic module production facility and a cutting device having the same, and more particularly, from an end of a string in which a plurality of cells are connected in a bundle unit by a ribbon while having a simple and simple structure. The present invention relates to a ribbon cutting unit for a photovoltaic module production facility and a cutting device having the same, which can effectively cut the exposed ribbon to have a level of exposure length required in the process.

Due to the depletion of chemical energy such as coal and petroleum and environmental pollution due to the use of chemical energy, efforts are being made to develop alternative energy. One of them is photovoltaic power generation using solar energy. Photovoltaic power generation is a series of technologies that convert solar energy (solar heat or sunlight) into electrical energy.

Briefly, the basic principle is that when solar light is irradiated to a solar cell composed of a pn junction semiconductor, electrons and hole pairs are generated by light energy, and electrons and holes move across the n and p layers. The electromotive force is generated by the photovoltaic effect through which the current flows, and the result of the current flowing to the externally connected load is used.

As described above, in order to convert the solar energy in the indefinite and pollution-free into electric energy, the development of a technology for a solar battery module for condensing sunlight is required.

Although not identical, a single solar module, like an LCD process or a semiconductor process, must go through multiple devices or systems.

Briefly, the production process of the solar module. First, when a plurality of cells (approximately square or rectangular) are supplied, a plurality of cells are arranged in a row. Next, a plurality of cells arranged in a row are connected to each other by a plurality of ribbons in consideration of the positive (+) and the negative (-) to form a string in a unit of bundle, and the strings are arranged in the plane direction. After the arrangement, the exposed ribbons are connected to one side of the strings so that all the cells are energized. The surface of the entire string is then coated with a material called EVA to secure the waterproof membrane, glass on one side, and back sheet on the other side, and finally the frame is assembled on the outside. The optical module is completed.

Although briefly described, a single solar module needs to go through a number of processes, that is, a plurality of devices or systems for performing the process. It is difficult to easily access or invest in the PV industry as it is regarded as important as the next generation industry because PV modules can be produced only with such diverse and complex devices or systems and the facilities encompassing them.

Therefore, to date, research activities on various devices or systems for producing solar modules are continued, and there are not many known technologies for various devices or systems of solar module production facilities.

On the other hand, in the above-described photovoltaic module production process, a plurality of cells arranged in a row is connected to a plurality of ribbons adjacent to one another in consideration of the positive electrode (+) and the negative electrode (-) by a string of one bundle unit There is a process of manufacturing a string, and after the string is manufactured, the exposed length of the ribbon (extended) exposed from the end of the string is different, so the length of the exposure should be cut to the length required for the process. . Only then can the post-process proceed and produce a quality solar module.

In relation to the operation of cutting the ribbon exposed from the end of the string to the length required for the process, a separate ribbon cutting for cutting the ribbon after automatically aligning the string at the cutting position to improve productivity A device is needed.

An object of the present invention is to provide a simple and simple structure, but a photovoltaic module capable of effectively cutting the ribbon exposed from the end of the string in which a plurality of cells are connected in a bundle unit by the ribbon has an exposure length of the level required in the process. It is to provide a ribbon cutting unit for a production facility and a cutting device having the same.

According to the present invention, an alignment unit for aligning the string to the cutting operation position by contacting the string connected to the plurality of cells in a bundle unit by a ribbon; And a cutting unit disposed adjacent to the alignment unit and cutting the exposed ribbon exposed from the end of the string aligned at the cutting position to a predetermined length. Achieved by the device.

Here, the cutting unit, the rotary cutter for cutting the exposed ribbon; And it may include a rotary drive for rotating the rotary cutter.

The rotary cutter comprises: a plurality of cutter arms disposed radially with the axis of rotation of the rotary drive unit as an axis; And a cutter blade detachably coupled to the cutter arm to cut the exposed ribbon.

A portion of the cutter blade that substantially cuts the exposed ribbon may be formed to protrude relatively more and have a sharper point than the other portion.

The apparatus may further include a vertical driving part connected to the cutting unit to drive the cutting unit up / down in a vertical direction with respect to the cutting work position.

The alignment unit includes: a string support member which supports the string at the bottom and is capable of driving up / down; An X-axis alignment unit for aligning a string supported by the string support member along an X-axis direction that is a direction crossing the direction in which the plurality of cells are connected; And a Y-axis alignment unit for aligning a string supported by the string support member along a Y-axis direction, which is a direction in which a plurality of cells are connected.

The alignment unit may include at least one vision camera for photographing a position of a string supported by the string support member; And a controller configured to control an operation of the X-axis alignment unit or the Y-axis alignment unit based on the photographing signal of the vision camera.

On the other hand, the object is, according to the present invention, by cutting the exposed ribbon exposed to the predetermined length from the end of the string of the plurality of cells connected in a bundle unit by a ribbon, a rotary cutter for cutting the exposed ribbon; And it may include a rotary drive for rotating the rotary cutter.

The rotary cutter comprises: a plurality of cutter arms disposed radially with the axis of rotation of the rotary drive unit as an axis; And a cutter blade detachably coupled to the cutter arm to cut the exposed ribbon, wherein a portion of the cutter blade that substantially cuts the exposed ribbon is relatively more protruding than the other portion and has a sharp end portion. Can be formed.

The apparatus may further include an up / down driving unit configured to drive up / down to the cutting work position.

It may further include a protective cover coupled to the outer edge of the rotary cutter area to partially protect the rotary cutter.

According to the present invention, it is possible to effectively cut the ribbon exposed from the end of the string in which a plurality of cells are connected in a bundle unit by the ribbon while having a simple and simple structure, to have an exposure length of the level required in the process.

1 is a perspective view showing a step-by-step process of producing a photovoltaic module produced by a photovoltaic module production facility to which a ribbon supply system according to an embodiment of the present invention is applied.
2 is a plan view of FIG. 1.
3 and 4 are respectively a perspective view of a ribbon cutting device for a photovoltaic module production facility according to an embodiment of the present invention showing the state that the string is moved.
5 is an enlarged perspective view of the cutting unit area.
6 is a rear perspective view of FIG. 5.
7 to 13 are views showing step by step the operation of the ribbon cutting device for a solar module production facility according to an embodiment of the present invention.

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by explaining preferred embodiments of the present invention with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

FIG. 1 is a perspective view illustrating a process of producing a solar module produced by a solar module production facility to which a ribbon supply system according to an exemplary embodiment of the present invention is applied, and FIG. 2 is a plan view of FIG. 1.

Although described above, the production process of the photovoltaic module 1 shown in FIGS. 1 and 2 will be briefly described with reference to FIG. 1 as follows.

First, as shown in (a) of FIG. 1, substantially square or rectangular cells (2, cells) are arranged in a row as in FIG. 1 (b), and the cells 2 arranged in a row are positively positive (+). And considering the negative electrode (-), the adjacent ones are connected by a plurality of central ribbons 3 to form a string 4 of one bundled unit.

Then, after arranging six strings 4 in the plate direction as shown in FIG. 1C, the central ribbons 3 exposed to one side of the strings 4 are connected by a plurality of side ribbons 5. The string assembly 6 is made so that 60 cells 2 are energized with each other.

Then, a material called EVA is applied to both sides of the string assembly 6, glass is disposed on one side, and a back sheet is placed on the other side, and finally, the frame 7 is surrounded on the outer side as shown in FIG. By assembling the solar module 1 is produced.

In the present embodiment, a total of 60 cells 2 are used in one solar module 1, and three rows of the central ribbon 3 are used when manufacturing the string 4 as shown in FIG. In the manufacture of the string assembly 6, as shown in FIG. 1C, six side ribbons 5 are used as different lengths.

Of course, this is only made in one embodiment and the scope of the present invention need not be limited to the shape of the solar module 1 shown. That is, the number and size of the cells 2, the number and size of the center ribbon 3 and the side ribbon 5 may be changed as many as the situation demands. Hereinafter, the three rows of central ribbons 3 connecting the plurality of cells 2 to manufacture the string 4 will be described as a ribbon 3 for convenience.

On the other hand, as described above, since the exposed lengths of the ribbons 3 exposed (stretched) from the ends of the strings 4 are different after the strings 4 are manufactured, the lengths of the exposed lengths in the process are required. Must be cut. Only then can the post process proceed and produce a good quality solar module (1). The ribbon cutting device for a solar module production facility is proposed for such a cutting operation.

3 and 4 are respectively a perspective view of a ribbon cutting device for a solar module production equipment according to an embodiment of the present invention showing the state that the string is moved, Figure 5 is an enlarged perspective view of the cutting unit region, 6 is a rear perspective view of FIG. 5, and FIGS. 7 to 13 are diagrams sequentially illustrating operations of a ribbon cutting device for a solar module production facility according to an embodiment of the present invention.

As shown in these figures, the cutting device of this embodiment includes a transfer unit 100 for transferring the string 4 to the cutting work position, and an alignment unit 200 for aligning the string 4 to the cutting work position. ) And a cutting arranged to be adjacent to the alignment unit 200 to cut the exposed ribbon 3a (see FIGS. 1 and 13) exposed from the end of the string 4 aligned at the cutting work position to a predetermined length. Unit 300.

The transfer unit 100 serves to transfer the string 4 toward the cutting work position. As shown, it can be applied to a belt conveyor. However, since the scope of the present invention does not need to be limited thereto, a roller conveyor or the like may be applied instead of the belt conveyor.

As will be described later in detail, but can be easily identified through the drawings, the alignment unit 200 is partially disposed between the transfer unit 100. Therefore, the transfer unit 100 is difficult if the entire upper surface of the structure is clogged, it should be provided with a structure in which a gap can be formed between them as in this embodiment. That is, the conveying unit 100 of the present embodiment may be manufactured by arranging the unit conveyors (not shown) along the length direction of the string 4 so as to form a spaced interval therebetween. At this time, each unit conveyor may be driven independently or may be driven together at once. In the present embodiment, the latter method is applied.

The alignment unit 200 includes a string support member 210 for supporting the string 4 at the bottom and a string 4 supported by the string support member 210, as shown in FIGS. 6 to 12. ) Is aligned along the X-axis direction, which is a direction intersecting the direction in which the plurality of cells 2 are connected, and the string 4 supported by the string support member 210 And a Y-axis alignment unit 230 (see FIG. 12) to align along the Y-axis direction, which is a direction in which the cell 2 is connected.

First, the string support member 210 has a cross-section of the uppercase letter 'T' in English, and the cells 2 forming the string 4 are seated on the upper surface of the string support member 210. As described above, in the present embodiment, since the string 4 is formed by connecting a total of 10 cells 2, the string support member 210 is also provided with 10 to support 10 cells 2 one by one. Ten string support members 210 are all connected to one body and operated together at once.

The string support member 210 is disposed between the transfer unit 100 within a range that does not interfere with the transfer unit 100. In general, the string supporting member 210 is disposed at a position lower than the surface of the transfer unit 100, and then, when the alignment operation is performed, the string support member 210 is raised up to a position slightly higher than the surface of the transfer unit 100 so that the cell 2 By supporting one by one the entire string 4 is raised up a predetermined height.

Therefore, a means for driving the string support member 210 up / down is connected to the string support member 210. The means for driving the string support member 210 up / down is not shown in detail but may be applied to a cylinder or a linear motor connected to the string support members 210 connected by one body.

The X-axis alignment unit 220 aligns the string 4, which is up (up) to a position slightly higher than the surface of the transfer unit 100 in the state supported by the string support member 210, along the X-axis direction. Play a role.

The X-axis alignment unit 220 is connected to the X-axis contact support block 221 and the X-axis contact support block 221 is moved along the X-axis and supported on the side of the string 4, the X-axis contact support An X axis reciprocating drive part 222 is provided to reciprocate the block 221 in the X axis direction.

The X-axis contact support block 221 is formed at least longer than the Y-axis length of the string (4), the upper surface is provided higher than the maximum height of the string (4) up (up) by the string support member 210 .

In addition, the X-axis reciprocating drive unit 222 is a rotation shaft 222a which is rotated by a motor (not shown), a rotation disk 222b coupled to both ends of the rotation shaft 222a, and one end thereof is eccentric at the rotation shaft center of the rotation disk 222b. The other end is provided with a link 222c connected to the X-axis contact support block 221. When one end of the link 222c is connected to the eccentric position of the rotation disk 222b, and the rotation disk 222b is rotated by the rotation shaft 222a, the link 222c is the X-axis contact support block 221. Since the X-axis contact support block 221 acts to push or pull, the string 4 can be aligned in the X-axis direction while reciprocating along the X-axis direction.

Finally, the Y-axis alignment unit 230 serves to align the string 4 in a direction different from that of the X-axis alignment unit 220, that is, in the Y-axis direction. Y-axis alignment operation of the string 4 by the Y-axis aligning portion 230 also raises the string 4 to a position slightly higher than the surface of the transfer unit 100 because the string 4 is supported by the string support member 210. Proceeds in the) state.

The Y-axis alignment unit 230 includes a Y-axis reciprocating drive unit 232 (see FIG. 12) which is connected to the string support member 210 connected by one body to reciprocate the string support member 210 in the Y-axis direction. . Although schematically illustrated in FIG. 12, the Y-axis reciprocating drive unit 232 may be applied as a linear motor, but may be changed to a cylinder.

On the other hand, the X-axis alignment work by the X-axis alignment unit 220 is only in the form that the X-axis contact support block 221 is in contact with the side of the string 4 or pressurized by the X-axis reciprocating drive unit 222. It is possible enough. That is, even if the string 4 is placed on the transfer unit 100 in a crooked state and then transferred to the cutting work position, the X-axis contact support block 221 is moved by the X-axis reciprocating drive 222 to the side surface of the string 4. By being contacted, the X-axis alignment of the crooked string 4 proceeds easily.

However, the distance between the string 4 and the cutting unit 300 is determined by the Y-axis aligning operation by the Y-axis aligning unit 230, thereby determining how much the exposed ribbon 3a is to be cut. Therefore, it is difficult to replace only by the configuration degree of the X-axis alignment unit 220.

In other words, in particular, in order to proceed with the Y-axis alignment by the Y-axis alignment unit 230, the alignment unit 200 of the present embodiment photographs the position of the string 4 supported by the string support member 210. And a controller (not shown) for controlling the operation of the Y-axis alignment unit 230 based on the imaging signal of the vision camera 240.

In this case, the vision camera 240 is applied to a pair of vision cameras 240 photographing both end regions of the string 4. Each of the pair of vision cameras 240 is coupled to the column 242 and moved up and down along the Z-axis direction on the column 242 by the Z-axis reciprocating drive 241 for close-up photography. Accordingly, when the vision camera 240 photographs both end regions of the string 4 to be aligned in the Y-axis direction and transmits the information to the control unit, the controller determines that the string 4 is in the + Y-axis direction or the -Y-axis direction. After determining how much to move in which direction of the Y-axis reciprocating drive unit 232 to drive the alignment in the Y-axis direction for the string (4).

On the other hand, the cutting unit 300 is disposed adjacent to the above-described alignment unit 200 to cut the exposed ribbon 3a exposed from the end of the string 4 aligned at the cutting work position to a predetermined length. Play a role.

5 and 13, the cutting unit 300 rotates the rotary cutter 310 and the rotary cutter 310 to cut the exposure ribbons 3a (see FIGS. 1 and 13). Rotating drive unit 320 for driving, a ribbon support block 340 (see FIG. 13), and a protective cover 330 is partially coupled to the outer thereof.

As shown in detail in FIG. 13, the rotary cutter 310 includes a plurality of cutter arms 311 radially disposed about the axis of rotation of the rotary drive unit 320, and a cutter arm by, for example, a bolt B or the like. A cutter blade 312 detachably coupled to 311 for cutting the exposed ribbon 3a is provided.

In the present embodiment, since four cutter arms 311 are provided at equal intervals along the circumferential direction, four cutter blades 312 detachably coupled to the cutter arms 311 are also provided. The portion of the cutter blade 312 that substantially cuts the exposed ribbon 3a is formed to protrude relatively more and have a sharper point than the other portion. Thus, when the rotary cutter 310 is rotated by 90 degrees by the rotation driving unit 320, the cutter blade 312 is rotated by 90 degrees according to the sharp end cutting the exposed ribbon (3a). On the other hand, since the scope of the present invention does not need to be limited thereto, the number of cutter arms 311 and cutter blades 312 may be more or less than shown.

The ribbon support block 340 serves to partially support and support the exposed ribbon 3a from the bottom before the rotary cutter 310 is operated by the rotation driving unit 320. That is, the exposure ribbon 3a may be cut only by the operation of the rotary cutter 310 being rotated by the operation of the rotary driver 320, but the exposure ribbon 3a is exposed before the rotary cutter 310 is operated by the rotary driver 320. When the ribbon 3a is partially supported at the bottom, the ribbon supporting block 340 is provided because it is easier to cut the exposed ribbon 3a.

As shown in detail in FIG. 5, the rotation driving unit 320 includes a driving motor 321, a reduction gear 322 connected to the rotation shaft of the driving motor 321, and a rotation type cutter ( The cutter support part 323 which rotatably supports 310 is provided.

The protective cover 330 is coupled to the outer periphery of a portion of the rotary cutter 310 and the rotary driving unit 320 to protect them. The protective cover 330, which may be made of transparent or translucent glass or plastic material, serves to protect parts such as the rotary cutter 310 and prevents the cut exposed ribbon 3a from scattering to the outside. To serve.

On the other hand, since the cutting length or position of the exposed ribbon (3a) can be changed according to the product as much as possible, in particular, the ribbon support block 340 and the rotary cutter 310 can be easily adjusted relative position to the cutting work position. There is a need. To this end, the cutting device of the present embodiment, as shown in detail in Figure 13, the vertical driving unit 350 and the horizontal driving unit 360 is provided.

The vertical driving unit 350 is connected to the cutting unit 300 and plays a role of driving the cutting unit 300 up / down in the vertical direction with respect to the cutting work position, and the horizontal driving unit 360 Is connected to the cutting unit 300 serves to drive the cutting unit 300 in the horizontal direction approach or spaced apart from the cutting work position.

Both the vertical driving unit 350 and the horizontal driving unit 360 may be applied as a cylinder or a linear motor. In the present embodiment, the vertical driving unit 350 may be a cylinder and the horizontal driving unit may be applied. 360 is applied to the linear motor. In particular, the vertical driving part 350 is further provided with a guide part 351 (see FIG. 13) for guiding the vertical direction.

Referring to Figures 7 to 13 the operation of the ribbon cutting device for a solar module production facility having such a configuration as follows.

First, as shown in FIG. 7, the string 4 to be worked is loaded on the transfer unit 100 and transferred to the cutting work position through the transfer unit 100.

When the string 4 reaches the cutting work position region as shown in FIGS. 8A and 8B, the operation of the transfer unit 100 is stopped, and the string support member 210 disposed between the transfer units 100 moves up as shown in FIG. 9. Up one cell (2, cells) constituting the string (4) while being up (up) a predetermined height.

Subsequently, as shown in FIG. 10, the X-axis contact support block 221 is moved to the X-axis by the X-axis reciprocating drive unit 222 of the X-axis alignment unit 220 and is in contact with the side of the string 4. Accordingly, the string 4, which is up by the string support member 210 to a position slightly higher than the surface of the transfer unit 100, is aligned in the X-axis direction.

Next, as shown in FIG. 11, in a state in which the pair of vision cameras 240 are slightly down in the Z-axis direction, both ends of the string 4 to be aligned in the Y-axis direction are photographed, and the information is transferred to the controller. send.

Then, the controller determines how much the string 4 should be moved in the + Y axis direction or the -Y axis direction, and then drives the Y axis reciprocating drive unit 232 as shown in FIG. Proceed with the alignment of the direction.

When the alignment operation in the X-axis direction and the Y-axis direction with respect to the string 4 is completed, the cutting unit 300 is up in the Z-axis direction by the vertical driving unit 350. Then, as shown in FIG. 13, the ribbon support block 340 partially supports the ribbon 3a at the bottom, and then rotates the rotary cutter 310 by the rotation driving unit 320 to expose the length required in the process. The ribbon 3a is cut.

When the cutting operation of the exposed ribbon 3a is completed, the devices are returned to their original positions, the strings are taken out in a post process, and a new string is provided again to repeat the above process.

As described above, according to the present embodiment, the ribbon 3 exposed from the end of the string 4 in which the plurality of cells 2 are connected in a bundle unit by the ribbon 3 while having a simple and simple structure is required in the process. Effective cutting can be achieved to achieve a level of exposure length.

As described above, the present invention is not limited to the described embodiments, and various modifications and changes can be made without departing from the spirit and scope of the present invention, which will be apparent to those skilled in the art. Therefore, such modifications or variations will have to be belong to the claims of the present invention.

1 solar module 2 cell
3: ribbon 3a: exposed ribbon
4 string 100 transfer unit
200: alignment unit 210: string support member
220: X-axis alignment unit 230: Y-axis alignment unit
240: vision camera 300: cutting unit
310: rotary cutter 320: rotary drive unit
330: protective cover 340: ribbon support block
350: vertical drive unit 360: horizontal drive unit

Claims (11)

An alignment unit contacting the strings in which the plurality of cells are connected in a bundle unit by a ribbon to align the strings to a cutting work position; And
And a cutting unit arranged adjacent to the alignment unit and cutting the exposed ribbon exposed from the end of the string aligned at the cutting operation position to a predetermined length. . The method of claim 1,
The cutting unit,
A rotary cutter for cutting the exposed ribbon; And
Ribbon cutting device for a photovoltaic module production equipment, characterized in that it comprises a rotary drive for rotating the rotary cutter. The method of claim 2,
The rotary cutter,
A plurality of cutter arms disposed radially with the rotation axis of the rotation driving unit as an axis; And
And a cutter blade detachably coupled to the cutter arm to cut the exposed ribbon. The method of claim 3,
Ribbon cutting device for a photovoltaic module production equipment, characterized in that the portion of the cutter cutting the exposed ribbon substantially protrudes more than the other portion and the end is formed sharp. The method of claim 1,
And a vertical driving part connected to the cutting unit to drive the cutting unit up / down in a vertical direction with respect to the cutting work position. The method of claim 1,
The alignment unit,
A string support member supporting the string at a lower portion thereof and capable of being driven up / down;
An X-axis alignment unit for aligning a string supported by the string support member along an X-axis direction that is a direction crossing the direction in which the plurality of cells are connected; And
Ribbon cutting device for solar module production equipment characterized in that it comprises a Y-axis aligning portion for aligning the string supported by the string support member along the Y-axis direction, which is a direction in which a plurality of cells are connected. The method of claim 6,
The alignment unit,
At least one vision camera for photographing the position of the string supported by the string support member; And
And a control unit for controlling the operation of the X-axis alignment unit or the Y-axis alignment unit based on the photographing signal of the vision camera. Cutting the exposed ribbon to a predetermined length, the exposed ribbon exposed from the end of the string in which the plurality of cells are connected in a bundle by the ribbon,
A rotary cutter for cutting the exposed ribbon; And
Ribbon cutting unit for a photovoltaic module production equipment, characterized in that it comprises a rotary drive for rotating the rotary cutter. The method of claim 8,
The rotary cutter,
A plurality of cutter arms disposed radially with the rotation axis of the rotation driving unit as an axis; And
A cutter blade detachably coupled to the cutter arm to cut the exposed ribbon;
The cutting portion of the cutter blade substantially cutting the exposed ribbon is relatively more protruding than the other portion and the edge is formed with a sharp point ribbon cutting unit for solar module production equipment, characterized in that. The method of claim 8,
Ribbon cutting unit for a photovoltaic module production facility further comprises an up / down driving unit for driving up / down to the cutting operation position. The method of claim 8,
And a protective cover coupled to an outer side of the rotatable cutter area to partially protect the rotatable cutter.

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