Transmission mechanism capable of avoiding overlapping of rework sheets

Abstract

The utility model relates to a transmission mechanism capable of avoiding overlapping of reworked sheets, which belongs to the field of solar cell manufacturing and comprises a rack and a belt conveyor arranged in the rack, and an overlapping prevention mechanism extending to the outer surface of the belt conveyor is arranged outside the rack. The stacking prevention mechanism comprises two mounting frames fixedly mounted on the top of the rack, rotating shafts extending to the outer portions of the two mounting frames are rotationally connected into the two mounting frames, a gear motor is fixedly mounted on the outer portion of the mounting frame on the back, and a transmission gear is fixedly connected to an output shaft of the gear motor. According to the conveying mechanism capable of avoiding overlapping of the reworked pieces, a speed reduction motor is started to work through a controller, a transmission gear rotates to drive a rotating shaft to rotate, the rotating shaft rotates to drive four baffles to rotate, the four baffles rotate so that intermittent quantitative control can be conducted when the reworked piece bodies are conveyed, and the phenomenon that the multiple reworked piece bodies are overlapped is eliminated; and the advantage of high transmission stability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cell manufacturing, in particular to a transmission mechanism capable of avoiding the overlapping of reworked sheets. Background Art

[0002] During the manufacturing process of solar cells, a large number of silicon wafers with poor appearance are often produced due to appearance problems such as fingerprints, dirt, oil spots, small white spots, and color difference. If these silicon wafers with poor appearance are passed down to the screen printing process, they will be downgraded to Class B cells after screen printing, affecting the shipment rate of Class A cells on the battery production line. At the same time, the selling price of Class B cells is very low, which will also lead to a significant increase in production costs. Therefore, for the above semi-finished silicon wafers with poor appearance, they are usually classified as reworked wafers and reworked. At present, most domestic manufacturers use the rework treatment method of velvet tail liquid rework.

[0003] In the process of manufacturing solar cells, a transmission mechanism that can avoid the stacking of reworked sheets is needed. In the prior art, the surface of the silicon wafer is chemically corroded by a mixed solution to remove the dirt on the surface of the silicon wafer. However, this treatment method will bring about a more serious problem of shiny silicon wafer lattices. Each time the reworked sheets are treated with the velvet tail liquid, nearly 50% will be classified as flower crystals. This part of the flower crystal reworked sheets not only has a very different appearance from the unreworked Class A cells, but also has a much lower photoelectric conversion efficiency of the prepared solar cells than the Class A cells, with a difference of 0.15%. They can only be sold at a reduced price, which has a greater adverse effect on the manufacturing cost of solar cells. The existing transmission mechanism transports the reworked sheets through a belt conveyor during transmission. Since multiple groups of reworked sheets are in contact with the belt conveyor, the reworked sheets are easily stacked or collided during the transmission process, and the offset phenomenon will occur during the transmission process, which seriously affects the production efficiency of the reworked sheets and cannot meet the use requirements. Therefore, a transmission mechanism that can avoid the stacking of reworked sheets is proposed to solve the above-mentioned problems. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a transmission mechanism that can avoid the overlapping of rework sheets, and has the advantages of high transmission stability and strong practicality. It solves the problem that the existing transmission mechanism transports the rework sheets through a belt conveyor during transmission, and since multiple groups of rework sheets are in contact with the belt conveyor, the rework sheets are easily stacked or collided during the transmission process, and offset occurs during the transmission process, which seriously affects the production efficiency of the rework sheets and cannot meet the use requirements.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a transmission mechanism capable of preventing the rework sheets from overlapping, comprising a frame and a belt conveyor arranged inside the frame, wherein the frame is provided with an anti-overlapping mechanism extending to the outer surface of the belt conveyor;

[0006] The anti-overlapping mechanism includes two mounting brackets fixedly mounted on the top of the frame, the two mounting brackets are internally rotatably connected with a rotating shaft extending to the outside thereof, a reduction motor is fixedly mounted on the outside of the mounting bracket on the back, a transmission gear is fixedly connected to the output shaft of the reduction motor, a driven gear meshing with the transmission gear is fixedly connected to the outside of the rotating shaft, and a baffle is fixedly connected to the outside of the rotating shaft.

[0007] Furthermore, the rotating shaft is a solid cylinder, and a bearing matching the rotating shaft is fixedly installed inside the mounting frame.

[0008] Furthermore, the mounting frame is a solid rectangular parallelepiped, and the two mounting frames are symmetrically distributed on the top of the frame.

[0009] Furthermore, the number of the baffles is four, and the four baffles are distributed outside the rotating shaft in a ring shape.

[0010] Furthermore, the baffle is a soft rubber plate, and a side of the baffle away from the rotating shaft is in contact with the outer surface of the belt conveyor.

[0011] Furthermore, a correction mechanism for correcting the rework sheet body is provided on the top of the frame, and the correction mechanism includes two mounting blocks fixedly mounted on the top of the frame, and electric push rods are fixedly mounted inside the two mounting blocks.

[0012] Furthermore, a deviation-correcting plate is fixedly connected to the output ends of the two electric push rods, and a protective rubber strip is fixedly connected to the opposite sides of the two deviation-correcting plates.

[0013] Furthermore, a mounting assembly is provided at the bottom of the rack, and the mounting assembly includes a base fixedly connected to the bottom of the rack, and the inner thread of the base is connected with bolts.

[0014] Compared with the prior art, the utility model provides a transmission mechanism that can avoid the overlap of reworked sheets, and has the following beneficial effects:

[0015] 1. The transmission mechanism that can avoid the overlapping of rework sheets starts the reduction motor through the controller. The reduction motor drives the transmission gear to rotate. The rotation and meshing of the transmission gear drives the driven gear and the rotating shaft to rotate. The rotation of the rotating shaft drives the four baffles to rotate. The rotation of the four baffles can perform intermittent quantitative control on the transmission of the rework sheet body, eliminate the phenomenon of multiple rework sheet bodies overlapping each other, improve the transmission efficiency and accuracy of the rework sheet body, and achieve the advantage of high transmission stability.

[0016] 2. The transmission mechanism can avoid the overlapping of rework sheets. The controller starts the extension and retraction of the electric push rod, which drives the correction plate to move, so as to correct the deviation and limit the rework sheet bodies of different sizes, avoid the deviation and collision of the rework sheet bodies, and facilitate the disassembly and installation of the frame and the belt conveyor by setting the base and bolts, thereby achieving the advantage of strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a cross-sectional view of the structure of the utility model;

[0018] Figure 2 This is a top view of the structure of the anti-overlapping mechanism of the utility model;

[0019] Figure 3 It is a structural stereogram of the deviation-correcting mechanism of the utility model.

[0020] In the figure: 1 frame, 2 belt conveyor, 3 anti-overlapping mechanism, 31 mounting frame, 32 rotating shaft, 33 reduction motor, 34 transmission gear, 35 driven gear, 36 baffle, 4 deviation correction mechanism, 41 mounting block, 42 ​​electric push rod, 43 deviation correction plate, 5 mounting assembly, 51 base, 52 bolts. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1:

[0023] See also Figure 1-3In this embodiment, a transmission mechanism that can avoid the overlapping of rework sheets includes a frame 1 and a belt conveyor 2 arranged inside the frame 1. The frame 1 is provided with an anti-overlapping mechanism 3 extending to the outer surface of the belt conveyor 2 outside the frame 1. The anti-overlapping mechanism 3 includes two mounting frames 31 fixedly installed on the top of the frame 1. The two mounting frames 31 are internally rotatably connected with a rotating shaft 32 extending to the outside thereof. A reduction motor 33 is fixedly installed on the outside of the back mounting frame 31. A transmission gear 34 is fixedly connected to the output shaft of the reduction motor 33. A driven gear 35 meshing with the transmission gear 34 is fixedly connected to the outside of the rotating shaft 32. A baffle 36 is fixedly connected to the outside of the rotating shaft 32.

[0024] The reduction motor 33 is started by the controller, and the reduction motor 33 drives the transmission gear 34 to rotate. The rotation and meshing of the transmission gear 34 drives the driven gear 35 and the rotating shaft 32 to rotate. The rotation of the rotating shaft 32 drives the four baffles 36 to rotate. The rotation of the four baffles 36 allows intermittent quantitative control of the transmission of the rework sheet body, thereby eliminating the phenomenon of multiple rework sheet bodies overlapping each other, improving the transmission efficiency and accuracy of the rework sheet body, and achieving the advantage of high transmission stability.

[0025] The rotating shaft 32 is a solid cylinder, and a bearing adapted to the rotating shaft 32 is fixedly installed inside the mounting frame 31. By providing the bearing, the stability of the rotating shaft 32 during rotation is improved.

[0026] Specifically, the mounting frame 31 is a solid rectangular parallelepiped, and two mounting frames 31 are symmetrically distributed on the top of the rack 1 in a front-to-back direction.

[0027] It should be noted that there are four baffles 36, which are distributed in a ring shape outside the rotating shaft 32. The baffles 36 are soft rubber plates, and the side of the baffles 36 away from the rotating shaft 32 abuts against the outer surface of the belt conveyor 2.

[0028] In addition, the belt conveyor 2 is a conventional technology known to the public in the prior art, so its specific structural composition and working principle will not be described in detail in this article.

[0029] In this embodiment, a correction mechanism 4 for correcting the rework sheet body is provided on the top of the frame 1. The correction mechanism 4 includes two mounting blocks 41 fixedly mounted on the top of the frame 1, and electric push rods 42 are fixedly mounted inside the two mounting blocks 41. The electric push rods 42 are activated by the controller to extend and retract, and the electric push rods 42 extend and retract to drive the correction plate 43 to move, thereby correcting and limiting the rework sheet bodies of different sizes to avoid the rework sheet bodies from deflecting and colliding.

[0030] The output ends of the two electric push rods 42 are fixedly connected with a deflection correction plate 43 , and the opposite sides of the two deflection correction plates 43 are fixedly connected with a protective rubber strip. The deflection correction plates 43 are in contact with the upper surface of the belt conveyor 2 .

[0031] Embodiment 2:

[0032] See also Figure 1-3 On the basis of the first embodiment, the embodiment includes a mounting assembly 5 arranged at the bottom of the frame 1, the mounting assembly 5 includes a base 51 fixedly connected to the bottom of the frame 1, and the inner thread of the base 51 is connected with a bolt 52. By providing the base 51 and the bolt 52, it is convenient to disassemble and install the frame 1 and the belt conveyor 2, achieving the advantage of strong practicality.

[0033] There are two bases 51 , and the two bases 51 are symmetrically distributed at the bottom of the frame 1 .

[0034] The above technical solution is adopted to facilitate the disassembly and installation of the frame 1 and the belt conveyor 2, thus achieving the advantage of strong practicality.

[0035] The working principle of the above embodiment is:

[0036] When in use, the reduction motor 33 is started through the controller, and the reduction motor 33 drives the transmission gear 34 to rotate. The transmission gear 34 rotates and engages to drive the driven gear 35 and the rotating shaft 32 to rotate. The rotation of the rotating shaft 32 drives the four baffles 36 to rotate. The rotation of the four baffles 36 thereby performs intermittent quantitative control on the transmission of the rework sheet body. The electric push rod 42 is started to extend and retract through the controller, and the extension and retraction of the electric push rod 42 drives the correction plate 43 to move, and correction and limiting treatment are performed on rework sheet bodies of different sizes to avoid deviation and collision of the rework sheet bodies. The frame 1 and the belt conveyor 2 are disassembled and installed by setting the base 51 and the bolts 52.

[0037] The electrical components appearing in the text are all electrically connected to the controller and the power supply. The control method of the utility model is controlled by the controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power supply is also common knowledge in this field. The utility model is mainly used to protect mechanical devices, so the utility model will no longer explain the control method and circuit connection in detail. The device is powered by an external power supply.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A transmission mechanism capable of avoiding the overlap of reworked sheets, characterized in that: It comprises a frame (1) and a belt conveyor (2) arranged inside the frame (1), wherein the outside of the frame (1) is provided with an anti-overlapping mechanism (3) extending to the outer surface of the belt conveyor (2); The anti-overlapping mechanism (3) comprises two mounting frames (31) fixedly mounted on the top of the frame (1); the two mounting frames (31) are internally rotatably connected to a rotating shaft (32) extending to the outside thereof; a reduction motor (33) is fixedly mounted on the outside of the mounting frame (31) at the back; a transmission gear (34) is fixedly connected to the output shaft of the reduction motor (33); a driven gear (35) meshing with the transmission gear (34) is fixedly connected to the outside of the rotating shaft (32); and a baffle (36) is fixedly connected to the outside of the rotating shaft (32).

2. A transmission mechanism capable of avoiding the overlap of reworked sheets according to claim 1, characterized in that: The rotating shaft (32) is a solid cylinder, and a bearing matching the rotating shaft (32) is fixedly installed inside the mounting frame (31).

3. A transmission mechanism capable of avoiding the overlap of reworked sheets according to claim 1, characterized in that: The mounting frame (31) is a solid rectangular parallelepiped, and the two mounting frames (31) are symmetrically distributed on the top of the frame (1) in a front-to-back manner.

4. A transmission mechanism capable of avoiding the overlap of reworked sheets according to claim 1, characterized in that: The number of the baffles (36) is four, and the four baffles (36) are distributed in a ring shape outside the rotating shaft (32).

5. The transmission mechanism capable of avoiding the overlap of reworked sheets according to claim 1, characterized in that: The baffle (36) is a soft rubber plate, and the side of the baffle (36) away from the rotating shaft (32) is in contact with the outer surface of the belt conveyor (2).

6. A transmission mechanism capable of avoiding the overlap of reworked sheets according to claim 1, characterized in that: A deflection correction mechanism (4) for correcting the deflection of the reworked sheet body is arranged on the top of the frame (1), and the deflection correction mechanism (4) comprises two mounting blocks (41) fixedly mounted on the top of the frame (1), and electric push rods (42) are fixedly mounted inside the two mounting blocks (41).

7. A transmission mechanism capable of avoiding the overlap of reworked sheets according to claim 6, characterized in that: The output ends of the two electric push rods (42) are fixedly connected with a deflection correction plate (43), and the opposite sides of the two deflection correction plates (43) are fixedly connected with a protective rubber strip.

8. The transmission mechanism capable of avoiding the overlap of reworked sheets according to claim 1, characterized in that: The bottom of the frame (1) is provided with a mounting assembly (5), and the mounting assembly (5) comprises a base (51) fixedly connected to the bottom of the frame (1), and the inner part of the base (51) is threadedly connected with a bolt (52).

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