CN222088636U - Laser sintering equipment - Google Patents

Abstract

The utility model discloses laser sintering equipment. The laser sintering equipment comprises a processing conveying line and a first rotating tower, wherein the two processing conveying lines are arranged in parallel, the processing conveying line is used for conveying solar cells, the first rotating tower is arranged between the two processing conveying lines, two first stations and two second stations are arranged in the circumferential direction of the first rotating tower, the connecting lines of the two first stations and the connecting lines of the two second stations pass through the rotation center of the first rotating tower, the first stations are used for feeding or discharging the first rotating tower, the second stations are used for processing the solar cells, the first rotating tower synchronously rotates the solar cells on the two first stations to the corresponding second stations along the first rotation direction to process the solar cells, and the first rotating tower synchronously rotates the solar cells on the two second stations to the corresponding first stations along the second rotation direction to perform discharging. The occupation space of the laser sintering equipment along the width direction of the processing conveying line is reduced.

Description

Laser sintering equipment

Technical Field

The utility model relates to the field of solar cell production and processing, in particular to laser sintering equipment.

Background

In the prior art, along the length direction of the conveying line of the laser sintering equipment, the laser sintering module is arranged on the conveying line, so that the length of the whole conveying line is longer, and the occupied space of the laser sintering equipment along the length direction of the conveying line is larger.

In the related art, a laser sintering module is arranged on a first turret, and solar cells on a conveying line can be transmitted to the first turret and move to a laser sintering processing station along with the rotation of the first turret. The laser sintering apparatus of this layout reduces the dimension of the laser sintering apparatus in the length direction thereof by increasing the dimension of the laser sintering apparatus in the width direction of the conveying line, but when the laser sintering apparatus has a plurality of processing conveying lines, the space occupied by the apparatus in the width direction of the conveying lines is large due to the need to provide a plurality of first turrets.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides laser sintering equipment, which uses two adjacent processing conveying lines to share one first turret so as to reduce the number of the first turrets, thereby reducing the occupied space of the equipment along the width direction of the processing conveying lines.

The laser sintering apparatus according to the embodiment of the first aspect of the present utility model includes:

The two processing conveying lines are arranged in parallel and are used for conveying solar cells;

The first turret is arranged between the two processing conveying lines, two first stations and two second stations are arranged in the circumferential direction of the first turret, the connecting lines of the two first stations pass through the rotation center of the first turret, the connecting lines of the two second stations pass through the rotation center of the first turret, the first stations are used for feeding or discharging the first turret, and the second stations are provided with laser sintering modules and are used for processing the solar cells;

the first rotating tower is provided with a first rotating direction and a second rotating direction, the first rotating tower synchronously rotates the solar cell pieces on the two first stations to the corresponding second stations for processing, and the first rotating tower synchronously rotates the solar cell pieces on the two second stations to the corresponding first stations for blanking along the second rotating direction.

The laser sintering equipment provided by the embodiment of the utility model has at least the following beneficial effects:

according to the embodiment of the application, the layout of the laser sintering equipment is improved, so that two adjacent processing conveying lines share the same first turret, and therefore, compared with the condition that a single conveying line is provided with one first turret, the size of the laser sintering equipment in the width direction can be reduced, and the integration level of the equipment is higher. For laser sintering equipment, two processing transfer chain synchronous transportation processing reduces the piece rate, can improve production efficiency. And because the laser sintering module is separated from the processing conveying line, the processing conveying line can convey the solar cell when the laser sintering module is processed, and the laser sintering module is immediately fed and discharged after being processed, so that the waiting time is reduced.

According to some embodiments of the utility model, the laser sintering device further comprises a loading and unloading module for conveying the solar cell on the processing conveying line to the first station, and for conveying the solar cell on the first station to the processing conveying line.

According to some embodiments of the present utility model, the feeding and discharging module includes a first rotating shaft and two first swing arms, the first swing arms have a fixed end connected with the first rotating shaft and a free end for adsorbing the solar cell, the first rotating shaft is disposed on the processing and conveying line, a feeding level is disposed at an upstream of the first rotating shaft, and a discharging level is disposed at a downstream of the first rotating shaft;

the first rotating shaft rotates to drive the free end of one first swing arm to move from the first station to the discharging position, and the free end of the other first swing arm synchronously moves from the charging position to the first station.

According to some embodiments of the utility model, the processing conveyor line comprises a plurality of conveyor modules, the conveyor modules comprise vacuum belts, and the vacuum belts can be adsorbed on the top surface of the solar cell for conveying;

The first station is arranged below one of the transmission modules, the transmission module is set to be a first transmission module, and when the vacuum belt of the first transmission module stops adsorbing, the first turret can receive the solar cell on the first transmission module.

According to some embodiments of the utility model, the laser sintering device further comprises a feeding conveying line, and the feeding conveying line alternately feeds the two processing conveying lines through the material dividing module.

According to some embodiments of the utility model, the material distributing module comprises a second rotating shaft and two second swing arms, the second swing arms are provided with fixed ends connected with the second rotating shaft and free ends used for adsorbing the solar cells, the second rotating shaft is arranged between the two processing conveying lines, the second rotating shaft rotates to drive the free ends of one of the second swing arms to move from one of the processing conveying lines to the feeding conveying line, and the free ends of the other second swing arms synchronously move from the feeding conveying line to the other processing conveying line.

According to some embodiments of the utility model, the feeding conveying line is provided with a first positioning module, the first positioning module comprises a driving piece and two clamping pieces, the two clamping pieces are respectively positioned at two sides of the feeding conveying line along the width direction, and the driving piece can drive the two clamping pieces to synchronously move in opposite directions so as to adjust the position of the solar cell on the feeding conveying line.

According to some embodiments of the utility model, the laser sintering module comprises a probe assembly and a laser, the probe assembly and the first turret can be mutually close until the probe assembly is abutted with the solar cell on the second station so as to electrically communicate the probe assembly with the solar cell, and the laser can emit laser towards the solar cell for sintering.

According to some embodiments of the utility model, the processing conveyor line further comprises a turnover module and a second turret, wherein the turnover module is arranged at the downstream of the first turret and is used for turnover of the solar cell, and the second turret is arranged at the downstream of the turnover module and is used for processing the other side of the solar cell.

According to some embodiments of the utility model, the laser sintering device further comprises two third stations, the third stations are arranged between the first station and the second station, and a connecting line of the two third stations passes through a rotation center of the first rotating tower;

Wherein the third station is provided with a second positioning module, along the first rotation direction, the solar cell sheet sequentially moves through the first station, the third station and the second station.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a laser sintering apparatus according to one embodiment of the present utility model;

FIG. 2 is a top view of the laser sintering apparatus of FIG. 1;

FIG. 3 is a laser sintering apparatus according to another embodiment of the present utility model;

FIG. 4 is a partial side view of the laser sintering apparatus of FIG. 3;

fig. 5 is a top view of the laser sintering apparatus of fig. 3.

Reference numerals:

A processing conveyor line 100, a first transmission module 101, a loading level 110, a unloading level 120;

A first turret 200, a first station 210, a second station 220;

the feeding and discharging device comprises an upper and lower material module 300, a first rotating shaft 310, a first swing arm 320;

a feeding conveyor line 400;

The material distributing module 500, a second rotating shaft 510 and a second swinging arm 520.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

In the description of the present utility model, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the prior art, along the length direction of the conveying line of the laser sintering equipment, the laser sintering module is arranged on the conveying line, so that the length of the whole conveying line is longer, and the occupied space of the laser sintering equipment along the length direction of the conveying line is larger.

In the related art, a laser sintering module is arranged on a turret, and solar cells on a conveying line can be transmitted to the turret and moved to a laser sintering processing station along with the rotation of the turret. The laser sintering apparatus of this layout reduces the dimension of the laser sintering apparatus in the length direction thereof by increasing the dimension of the laser sintering apparatus in the width direction of the conveying line, but when the laser sintering apparatus has a plurality of processing conveying lines, the space occupied by the apparatus in the width direction of the conveying lines is large due to the need to provide a plurality of turrets.

To solve the above-mentioned problems, the laser sintering device according to the first embodiment of the present application provides a new layout concept that two adjacent processing conveyor lines 100 share a first turret 200 to reduce the number of first turrets 200, thereby reducing the floor space of the device along the width direction of the processing conveyor lines 100. Specifically, as shown in fig. 1, the laser sintering apparatus includes two processing conveyor lines 100 and a first turret 200, where the two processing conveyor lines 100 are arranged in parallel, and each processing conveyor line 100 is used for conveying a solar cell to a specified position for positioning, processing or transferring the solar cell.

The first turret 200 is disposed between the two processing conveyor lines 100, and as shown in fig. 1 and 2, the first turret 200 has four extending arms extending in the radial direction, and the ends of the extending arms are provided with carrying platforms for carrying solar cells. Two first stations 210 and second stations 220 are provided in the circumferential direction of the first turret 200, a line connecting the two first stations 210 passes through the rotation center of the first turret 200, and a line connecting the two second stations 220 passes through the rotation center of the first turret 200. When the carrying table of the first turret 200 rotates to the first station 210, the carrying table can receive the solar cell from the processing conveying line 100, or transfer the solar cell on the carrying table onto the processing conveying line 100, for example, in the embodiment shown in fig. 1 and fig. 2, the laser sintering device is further provided with an upper and lower material module 300, which can be used for carrying the solar cell on the processing conveying line 100 onto the carrying table at the first station 210, and carrying the solar cell on the carrying table at the first station 210 back onto the processing conveying line 100. A laser sintering module (not shown) is disposed at the second station 220, and the laser sintering module can perform laser sintering treatment on the solar cell on the second station 220 when the carrier of the first turret 200 rotates to the second station 220.

It should be noted that in a single turret layout in which a conveyor line is matched with a turret, the turret can only rotate in a single direction, and when the solar cell is conveyed onto the turret, the solar cell needs to pass through a feeding station, a processing station and a discharging station along with the unidirectional rotation of the turret, and then leaves the turret to return to the conveyor line. In the embodiment of the present application, the first turret 200 has two degrees of freedom of rotation, and can alternately rotate in a first rotational direction and a second rotational direction. It will be appreciated that the first rotational direction may be either clockwise or counterclockwise and the second rotational direction is opposite the first rotational direction.

When the first turret 200 rotates along the first rotation direction, the first turret 200 rotates the solar cells on the two first stations 210 to the corresponding second stations 220 synchronously for processing. After the processing is completed, the first turret 200 rotates in the second rotation direction, so that the solar cells on the second station 220 are turned back to the first station 210 for blanking, and then the unprocessed solar cells are carried to the first station 210 for circulation.

Based on the above, it can be found that, by improving the layout of the laser sintering apparatus so that two adjacent processing conveyor lines 100 share the same first turret 200, the dimension of the laser sintering apparatus in the width direction can be reduced and the integration of the apparatus can be improved as compared with the case where a single conveyor line is provided with one turret. For the laser sintering equipment, the two processing conveying lines 100 synchronously convey processing, so that the chip rate is reduced, and the production efficiency can be improved. And, because the laser sintering module is separated from the processing conveying line 100, the processing conveying line 100 can carry out the conveying of the solar cell when the laser sintering module is processed, and the feeding and discharging are immediately carried out after the processing of the laser sintering module is completed, so that the waiting time is reduced.

In some embodiments, as shown in fig. 1 and 2, the laser sintering apparatus further includes a loading and unloading module 300, where the loading and unloading module 300 is used to transport the solar cell on the processing conveyor line 100 to the first station 210 of the first turret 200, and also to transport the solar cell on the first station 210 to the processing conveyor line 100. In some more specific embodiments, the loading and unloading module 300 conveys the processed solar cells on the first station 210 to the processing conveyor line 100 through a clamping jaw, a sucking disc, or the like, and then conveys the unprocessed solar cells on the processing conveyor line 100 to the first station 210. In other embodiments, the loading and unloading operations of the first turret 200 by the loading and unloading module 300 are performed simultaneously.

Specifically, the feeding and discharging module 300 includes a first rotating shaft 310 and two first swing arms 320, the first swing arms 320 have a fixed end and a free end, the fixed end is connected with the first rotating shaft 310, and the free end is provided with a vacuum adsorption mechanism, so that solar cells can be adsorbed. In the embodiment shown in fig. 1 and fig. 2, the upstream conveying line and the downstream conveying line of the feeding and discharging module 300 are on the same straight line, and the two first swing arms 320 are perpendicular to each other, in other embodiments, the included angle between the two first swing arms 320 may also be adaptively adjusted according to the difference between the included angles of the processing conveying lines 100 upstream and downstream of the feeding and discharging module 300.

The first rotating shaft 310 is disposed on the processing conveying line 100, the upper stream of the first rotating shaft 310 is provided with the feeding level 110, the lower stream of the first rotating shaft 310 is provided with the discharging level 120, the first rotating shaft 310 rotates to drive the free end of one of the first swing arms 320 to move from the first station 210 to the discharging level 120, the processed solar cell is placed at the first station 210, the free end of the first swing arm 320 adsorbs and fixes the solar cell and then moves to the discharging level 120 along with the rotation of the first rotating shaft 310, and then the adsorption effect on the solar cell is removed, so that the solar cell falls on the discharging level 120, and the discharging of the first station 210 is completed. It should be noted that, while the first station 210 is blanking, the other first swing arm 320 of the loading and blanking module 300 simultaneously loads the first station 210. Specifically, the free end of the other first swing arm 320 is originally located on the loading level 110, and the unprocessed solar cell at the loading level 110 is adsorbed and fixed, and along with the rotation of the first rotating shaft 310, the first swing arm 320 rotates to the first station 210 to carry the solar cell which is not started to the first station 210, so that the loading of the first station 210 is completed.

Unlike the above embodiments, the loading and unloading module 300 is used to carry out the handling operation of the solar cells between the processing conveyor line 100 and the first turret 200, and in other embodiments, the solar cells are transferred by the cooperation between the processing conveyor line 100 and the first turret 200. For example, in the embodiment shown in fig. 3 to 5, the processing conveyor line 100 is constituted by a plurality of conveyor modules, each having a separate driving mechanism and a vacuum belt capable of being attracted to the top surface of the solar cell sheet for conveyance. It should be noted that the top surface of the solar cell is suspended on the processing transmission line for transmission after being adsorbed and fixed.

As shown in fig. 4 and 5, the first station 210 of the first turret 200 is disposed below one of the transmission modules, and the transmission module is set as the first transmission module 101, and the suction function of the vacuum belt of the first transmission module 101 can be independently turned on or off. When the carrying table of the first turret 200 rotates to the first station 210 below the first transfer module 101, the vacuum belt of the first transfer module 101 stops adsorbing, and the solar cell drops from the first transfer module 101 to be carried by the first turret 200. Subsequently, the solar cell sheet rotates along with the first turret 200 to sequentially perform processing, after the processing is completed, the first turret 200 is reversed to enable the solar cell sheet to return to the lower side of the first transmission module 101, the vacuum belt of the first transmission module 101 is started to absorb and fix the solar cell sheet, and then the vacuum belt rotates to drive the solar cell sheet to continuously move along the processing conveying line 100.

Based on the above, the laser sintering equipment of this structure is higher in integration level, need not to set up the unloading module 300 and processes the material handling between transfer chain 100 and the first transfer column 200, and equipment is smaller along the volume of processing transfer chain 100 length direction and width direction.

In some embodiments, the laser sintering apparatus further comprises a feeding conveyor line 400, and the feeding conveyor line 400 alternately feeds the two processing conveyor lines 100 through the material dividing module 500. As shown in fig. 3 and 5, the feeding conveyor line 400 is upstream of the two processing conveyor lines 100, and the solar cells on the feeding conveyor line 400 are distributed into the two processing conveyor lines 100 by the distribution module 500. Because the processing transfer chain 100 all need stagnate and wait when every solar wafer is transmitted to first capstan head 200 and is processed, the conveying speed on the processing transfer chain 100 is less than the conveying speed of material loading transfer chain 400 to, realize the feed of two processing transfer chain 100 through a material loading transfer chain 400, can make full use of the conveying efficiency of material loading transfer chain 400, avoid setting up a plurality of material loading transfer chain 400 and cause the redundancy of conveying ability and the improvement of cost.

In some embodiments, the material separating module 500 has the same structure as the material loading and unloading module 300 in the above embodiments, but the application scenarios are different. Specifically, the material separating module 500 includes a second rotating shaft 510 and two second swing arms 520, the second swing arms 520 have a fixed end and a free end, the fixed end is connected with the second rotating shaft 510, and the free end is provided with a structure for adsorbing and fixing the solar cell. The second rotating shaft 510 is disposed between the two processing conveying lines 100, and the second rotating shaft 510 rotates to drive the free end of one of the second swing arms 520 to move from one of the processing conveying lines 100 to the feeding conveying line 400, and the free end of the other second swing arm 520 synchronously moves from the feeding conveying line 400 to the other processing conveying line 100.

For example, as shown in fig. 5, for convenience of description, the second swing arm 520 now on the feeding conveyor line 400 is named as a first sub-swing arm, and the second swing arm 520 now on the processing conveyor line 100 on the front side is named as a second sub-swing arm. The material distribution module 500 shown in fig. 5 rotates clockwise, and the first sub-swing arm moves onto the rear processing conveyor line 100, so as to complete the feeding of the rear processing conveyor line 100. Meanwhile, the second sub-swing arm moves to the feeding conveyor line 400, and the material taking of the second sub-swing arm is completed. Then, the material distributing module 500 rotates counterclockwise to complete the material taking of the first sub-swing arm and the material feeding of the front side processing conveyor line 100. The material distribution of the two processing conveying lines 100 is realized through one material distribution module 500, and the efficiency is high.

In some embodiments, the feeding conveying line 400 is further provided with a first positioning module (not shown in the figure), the first positioning module comprises a driving piece and two clamping pieces, the two clamping pieces are respectively located on two sides of the feeding conveying line 400 along the width direction, the driving piece can drive the two clamping pieces to move synchronously and oppositely, after the clamping pieces are abutted with one side edge of the solar cell, the clamping pieces can be pushed to move until the other side edge is abutted with the corresponding clamping piece, so that the position of the solar cell on the feeding conveying line 400 is adjusted, the centering of the solar cell is realized, and the position accuracy of the solar cell is guaranteed.

In some embodiments, the laser sintering module (not shown) includes a probe assembly and a laser, and the probe assembly and the first turret 200 can be close to each other, where the probe assembly is connected to a pressing driving mechanism to drive the probe assembly to move down, or where the first turret 200 is provided with an upper driving mechanism to drive a carrying table of the first turret 200 to move up. After the probe assembly is abutted against the solar cell on the second station 220, the probe assembly can be electrically connected with the grid line on the solar cell, so that under the condition of an externally applied electric field, the laser emits laser towards the solar cell to perform laser sintering. The laser-assisted rapid sintering technology can improve the conversion efficiency of the solar cell, and the laser-assisted rapid sintering treatment is performed on the metal paste on the front side of the solar cell, so that the paste on the front side of the solar cell and the substrate of the solar cell form better ohmic contact. Meanwhile, the grid line electrode is optimized by utilizing the charge effect, the contact resistance is improved, and the output of the high-efficiency solar photovoltaic cell is realized, so that the photoelectric efficiency of the solar cell is remarkably improved.

In some embodiments, the first turret 200 sinters the metal paste on the front side of the solar cell, then transfers it back onto the processing conveyor line 100, and then turns over so that the back side of the solar cell faces upward, thereby enabling the sintering of the metal paste on the back side. Specifically, the processing conveying line 100 further includes a turnover module and a second turret (not shown in the drawing), the turnover module is disposed at a downstream of a connection between the first turret 200 and the processing conveying line 100, and the turnover module may include a manipulator, and the manipulator clamps the solar cell to perform turnover, or is a turnover mechanism, so that the solar cell can be driven to rotate 180 °. The second turret is disposed downstream of the turn-over module, and is similar to the first turret 200 in structure, and is also provided with a first station 210 for loading and unloading and a second station 220 for processing. A laser sintering module is also disposed on the second station 220 to process the back surface of the solar cell.

It will be appreciated that in the embodiment shown in fig. 1, the first turret 200 is provided with four extension arms corresponding to four stations (two first stations 210 and two second stations 220), respectively, and in other embodiments, a plurality of extension arms may be provided such that a plurality of other stations are provided in the circumferential direction of the first turret 200. For example, the laser sintering apparatus further includes two third stations, the connection lines of which pass through the rotation center of the first turret 200. That is, the first turret 200 is provided with six extension arms, and the third station is disposed between the first station 210 and the second station 220, and when rotated in the first rotation direction, the solar cell sequentially passes through the first station 210, the third station, and the second station 220. The second station 220 may be provided with a second positioning module, which may be a visual detection mechanism, for obtaining image information of the solar cell on the carrying platform, so as to provide accurate position positioning for the laser sintering module.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model. Furthermore, embodiments of the utility model and features of the embodiments may be combined with each other without conflict.

Claims (10)

1. Laser sintering equipment, characterized by comprising:

The solar cell processing system comprises two processing conveying lines (100), wherein the two processing conveying lines (100) are arranged in parallel, and the processing conveying lines (100) are used for conveying solar cells;

The solar cell processing device comprises a first turret (200), wherein the first turret (200) is arranged between two processing conveying lines (100), two first stations (210) and two second stations (220) are arranged on the first turret (200) in the circumferential direction, connecting lines of the two first stations (210) pass through the rotation center of the first turret (200), connecting lines of the two second stations (220) pass through the rotation center of the first turret (200), the first stations (210) are used for feeding or discharging the first turret (200), and the second stations (220) are provided with laser sintering modules for processing solar cells;

The first turret (200) has a first rotation direction and a second rotation direction, the first turret (200) synchronously rotates the solar cells on the two first stations (210) to the corresponding second stations (220) along the first rotation direction so as to process, and the first turret (200) synchronously rotates the solar cells on the two second stations (220) to the corresponding first stations (210) along the second rotation direction so as to perform blanking.

2. The laser sintering device according to claim 1, further comprising a loading and unloading module (300) for transporting solar cells on the processing conveyor line (100) to the first station (210) and for transporting solar cells on the first station (210) to the processing conveyor line (100).

3. The laser sintering device according to claim 2, wherein the loading and unloading module (300) comprises a first rotating shaft (310) and two first swing arms (320), the first swing arms (320) are provided with fixed ends connected with the first rotating shaft (310) and free ends for adsorbing the solar cells, the first rotating shaft (310) is arranged on the processing conveying line (100), a loading level (110) is arranged at the upstream of the first rotating shaft (310), and a unloading level (120) is arranged at the downstream of the first rotating shaft (310);

The first rotating shaft (310) rotates to drive the free end of one of the first swing arms (320) to move from the first station (210) to the discharging position (120), and the free end of the other first swing arm (320) synchronously moves from the feeding position (110) to the first station (210).

4. The laser sintering apparatus according to claim 1, wherein the processing conveyor line (100) comprises a plurality of transmission modules, the transmission modules comprising a vacuum belt capable of being adsorbed on the top surface of the solar cell sheet for conveyance;

The first station (210) is arranged below one of the transmission modules, the transmission module is set to be a first transmission module (101), and when the vacuum belt of the first transmission module (101) stops adsorbing, the first rotating tower (200) can receive the solar cell on the first transmission module (101).

5. The laser sintering device according to claim 1, further comprising a feeding conveyor line (400), wherein the feeding conveyor line (400) alternately feeds the two processing conveyor lines (100) through a distributing module (500).

6. The laser sintering device according to claim 5, wherein the material distributing module (500) comprises a second rotating shaft (510) and two second swing arms (520), the second swing arms (520) are provided with fixed ends connected with the second rotating shaft (510) and free ends for adsorbing the solar cells, the second rotating shaft (510) is arranged between the two processing conveying lines (100), the second rotating shaft (510) rotates to drive the free ends of one of the second swing arms (520) to move from one of the processing conveying lines (100) to the feeding conveying line (400), and the free ends of the other second swing arms (520) synchronously move from the feeding conveying line (400) to the other processing conveying line (100).

7. The laser sintering device according to claim 5, wherein a first positioning module is arranged on the feeding conveyor line (400), the first positioning module comprises a driving member and two clamping members, the two clamping members are respectively positioned on two sides of the feeding conveyor line (400) along the width direction, and the driving member can drive the two clamping members to synchronously move in opposite directions so as to adjust the position of the solar cell on the feeding conveyor line (400).

8. The laser sintering device according to claim 1, characterized in that the laser sintering module comprises a probe assembly and a laser, the probe assembly and the first turret (200) being able to approach each other until the probe assembly abuts the solar cell on the second station (220) to electrically communicate the probe assembly with the solar cell, the laser being able to emit laser light towards the solar cell for sintering.

9. The laser sintering device according to claim 1, wherein the processing conveyor line (100) further comprises a turnover module and a second turret, the turnover module being disposed downstream of the first turret (200) for turning over the solar cell, and the second turret being disposed downstream of the turnover module for processing the other side of the solar cell.

10. The laser sintering device according to claim 1, characterized in that it further comprises two third stations, which are arranged between the first station (210) and the second station (220), the line connecting the two third stations passing through the centre of rotation of the first turret (200);

The third station is provided with a second positioning module, and the solar cell sheet sequentially moves through the first station (210), the third station and the second station (220) along the first rotation direction.