Material conveying device and vertical drying oven

Abstract

This utility model discloses a material conveying device and a drying oven. The material conveying device includes a tilting mechanism, multiple carrying mechanisms, a first conveying mechanism, a second conveying mechanism, and an anti-collision mechanism. The tilting mechanism includes a first sprocket, a second sprocket, and a chain, with the chain wound around the first and second sprockets. The multiple carrying mechanisms are fixed to the chain and spaced apart along the chain, extending in a direction away from the chain. The first conveying mechanism is connected to the carrying mechanisms for conveying material to the carrying mechanisms. The second conveying mechanism is connected to the carrying mechanisms for receiving and conveying material falling from the carrying mechanisms. The anti-collision mechanism elastically abuts against the material on the carrying mechanisms to buffer the kinetic energy generated during conveying or tilting. This utility model can prevent edge chipping or overall breakage of solar cells caused by impacting the tail of the carrying mechanism with a certain kinetic energy due to deviation in the conveying stroke, thereby improving the yield rate of solar cell production.

Description

Technical Field

[0001] This utility model relates to the technical field of solar cell production equipment, specifically to a material conveying device and a vertical drying oven. Background Technology

[0002] High-efficiency heterojunction solar cells typically use screen-printed silver paste to form electrodes. These screen-printed cells require drying, and traditional drying methods usually involve tunnel furnaces to dry the silicon wafers. This method uses long equipment, resulting in a large footprint and high energy consumption. In related technologies, a novel vertical drying furnace uses a slotted structure to hold the solar cells, and a rotating chain drives the slotted structure to transport the cells. This method significantly reduces the size of the equipment and is therefore favored.

[0003] However, the slot structure of most new vertical drying ovens is made of heat-resistant metal. When the battery cell is not positioned correctly in the slot structure, it is easy for the battery cell to collide with the slot. This rigid collision can easily cause the edge of the battery cell to crack or the whole cell to break, affecting the yield. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a material conveying device suitable for drying solar cells. This device effectively avoids problems such as rigid impacts, edge chipping, or overall breakage of solar cells due to deviations in the conveying stroke, thereby improving the yield rate of solar cell production.

[0005] This utility model also proposes a drying oven that utilizes the above-mentioned material conveying device.

[0006] According to a first aspect of the present invention, a material conveying device is used for conveying sheet materials in a vertical drying oven. The device includes a tilting mechanism, multiple supporting mechanisms, a first conveying mechanism, a second conveying mechanism, and an anti-collision mechanism. The tilting mechanism includes a first sprocket, a second sprocket, and a chain, the chain being wound around the first sprocket and the second sprocket. Multiple supporting mechanisms are used to carry materials, each fixed to the chain. These supporting mechanisms are spaced apart along the chain and extend in a direction away from the chain. The first conveying mechanism is connected to a corresponding supporting mechanism for conveying materials to that corresponding supporting mechanism. The second conveying mechanism is connected to a corresponding supporting mechanism for receiving and conveying materials falling from that corresponding supporting mechanism. The anti-collision mechanism elastically abuts against the materials on the corresponding supporting mechanism to buffer the kinetic energy generated during conveying or tilting.

[0007] The material conveying mechanism according to the embodiment of this utility model has at least the following beneficial effects: the anti-collision mechanism absorbs the kinetic energy generated by the battery cells during the conveying process, and plays a buffering role on the battery cells during the conveying or sliding process, so as to avoid the edge cracking or overall breakage of the battery cells caused by impacting the tail of the bearing mechanism with a certain kinetic energy when the transmission stroke is deviated, thereby improving the yield of battery cell production.

[0008] According to some embodiments of the present invention, the bearing mechanism includes a first bearing member and a second bearing member, the first bearing member and the second bearing member being opposite to each other and spaced apart, forming a material receiving space between the first bearing member and the second bearing member, both the first bearing member and the second bearing member being provided with limiting grooves, the limiting grooves being used to receive part of the material, one end of the limiting groove having an opening, the opening being used for the first conveying mechanism to convey material to the receiving space, and the other end of the limiting groove away from the opening being provided with a limiting part.

[0009] According to some embodiments of the present invention, the anti-collision mechanism includes a first anti-collision mechanism, which is disposed on the bracket of the first conveying mechanism near the limiting part. The contact surface between the first anti-collision mechanism and the material is located within the accommodating space, and there is a gap between the contact surface between the first anti-collision mechanism and the material and the plane where the limiting part of the corresponding bearing mechanism is located.

[0010] According to some embodiments of the present invention, the anti-collision mechanism further includes a second anti-collision mechanism, which is disposed on the drive shaft of the first sprocket and rotates synchronously with the first sprocket. The contact surface between the second anti-collision mechanism and the material is located within the accommodating space, and there is a gap between the contact surface between the second anti-collision mechanism and the material and the plane where the limiting part of the corresponding bearing mechanism is located.

[0011] According to some embodiments of the present invention, the first anti-collision mechanism includes a connector, a buffer pad, and a first anti-collision pad. The connector is fixedly mounted on the support of the first conveying mechanism, the buffer pad is fixed to the connector, and the first anti-collision pad is disposed on the buffer pad.

[0012] According to some embodiments of the present invention, the first anti-collision pad is provided with multiple layers.

[0013] According to some embodiments of the present invention, the second anti-collision mechanism includes a connecting disc and a second anti-collision pad. The connecting disc is disposed on the drive shaft of the first sprocket and rotates synchronously with the first sprocket. The second anti-collision pad is disposed on the outer peripheral surface of the connecting disc.

[0014] According to some embodiments of the present invention, the second anti-collision pad is provided with multiple layers.

[0015] According to some embodiments of the present invention, the anti-collision mechanism is disposed on the surface of the limiting portion facing the limiting groove.

[0016] The vertical drying oven according to a second aspect of the present invention includes the material conveying device described in any of the above claims. The vertical drying oven according to the embodiments of the present invention has at least the following beneficial effects: The vertical drying oven of the present invention adopts the above-mentioned material conveying device, which absorbs the kinetic energy generated by the battery cells during the conveying process through the anti-collision mechanism, and plays a buffering role on the battery cells during conveying or sliding, so as to avoid the edge cracking or overall breakage caused by the battery cells hitting the tail of the bearing mechanism with a certain kinetic energy when there is a deviation in the transmission stroke, thereby improving the yield of battery cell production.

[0017] Additional aspects and advantages of this invention 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 invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of a material conveying device according to an embodiment of the present invention; Figure 2 This is a schematic diagram showing the assembly position of the first anti-collision mechanism of a material conveying device according to an embodiment of the present invention. Figure 3 This is an enlarged view of point A in Figure 2; Figure 4 This is a schematic diagram showing the assembly position of the second anti-collision mechanism of a material conveying device according to an embodiment of the present invention. Figure 5 for Figure 4 Enlarged view of point B in the middle; Figure 6 This is a schematic diagram showing the assembly position of the anti-collision mechanism of a material conveying device according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the second anti-collision mechanism of a material conveying device according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the first anti-collision mechanism of a material conveying device according to an embodiment of the present invention.

[0019] Icon labels: Tilting mechanism 100, first sprocket 110, second sprocket 120, chain 130; The supporting mechanism 200, the first supporting member 210, the second supporting member 220, the accommodating space 230, the limiting groove 240, the opening 241, and the limiting part 242; First transmission mechanism 300; Second transmission mechanism 400; Anti-collision mechanism 500, first anti-collision mechanism 510, connector 511, buffer pad 512, first anti-collision pad 513, second anti-collision mechanism 520, connecting plate 521, second anti-collision pad 522; 600 solar cells. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the orientation descriptions, such as left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] The material conveying device proposed in this embodiment is mainly used for conveying sheet materials, such as solar cells 600, in a vertical drying oven. The thickness of the solar cells 600 is typically between 80-150 μm. Solar cells 600 of this thickness are prone to edge chipping or overall breakage when impacted with hard objects. The material conveying device proposed in this invention aims to prevent the solar cells 600 from directly impacting the tail of the bearing mechanism 200, thus avoiding edge chipping or overall breakage.

[0025] The present invention will now be described in detail using the example of a material conveying device conveying battery cells 600.

[0026] Reference Figure 1 -8. The material conveying device includes a tilting mechanism 100, multiple bearing mechanisms 200, a first conveying mechanism 300, a second conveying mechanism 400, and an anti-collision mechanism 500.

[0027] The flipping mechanism 100 includes a first sprocket 110, a second sprocket 120, and a chain 130. The flipping mechanism 100 is arranged vertically. The chain 130 is wound around the first sprocket 110 and the second sprocket 120. When the first sprocket 110 and the second sprocket 120 rotate, they can drive the chain 130 to rotate accordingly. A plurality of supporting mechanisms 200 are provided on the chain 130. The supporting mechanisms 200 are fixed to the chain 130. The plurality of supporting mechanisms 200 are arranged at intervals along the chain 130 and extend in a direction away from the chain 130. The plurality of supporting mechanisms 200 are used to support the battery cells 600.

[0028] The first conveying mechanism 300 is connected to the corresponding carrying mechanism 200 for conveying the battery cell 600 to the carrying mechanism 200; the second conveying mechanism 400 is connected to the corresponding carrying mechanism 200 for receiving and conveying the battery cell 600 falling from the carrying mechanism 200. The battery cell 600 conveyed by the first conveying mechanism 300 can be conveyed to the corresponding carrying mechanism 200, and through the operation of the chain 130, the battery cell 600 is conveyed to the drying oven for drying. After drying, the battery cell 600 moves with the chain 130 to the second conveying mechanism 400, and as the chain 130 moves, the battery cell 600 falls onto the second conveying mechanism 400, and through the second conveying mechanism 400, it is conveyed to the next process.

[0029] It should be noted that the first transmission mechanism 300 and the second transmission mechanism 400 can adopt commonly used belt transmission mechanisms, chain 130 transmission mechanisms, etc., which will not be described in detail here.

[0030] There are two special cases when the battery cell 600 is transferred to the corresponding carrier mechanism 200 via the first conveying mechanism 300: 1. Excessive conveying distance of battery cell 600: Battery cell 600 will directly impact the tail of the bearing mechanism 200, causing the edge of battery cell 600 to crack or the whole battery cell to break.

[0031] 2. The conveying stroke of the battery cell 600 is too short: During the operation of the flipping mechanism 100 in the drying oven, when the battery cell 600 moves to the top of the flipping mechanism 100, the battery cell 600 will slide down in the bearing mechanism 200. The sliding battery cell 600 will hit the tail of the bearing mechanism 200, causing the edge of the battery cell 600 to crack or the whole battery cell to break.

[0032] To this end, the present invention provides an anti-collision mechanism 500, which is used to elastically abut against the battery cell 600 on the corresponding bearing mechanism 200 to reduce the kinetic energy generated by the battery cell 600 during transmission or flipping, and to buffer the battery cell 600 during transmission or sliding.

[0033] The material conveying mechanism of this utility model absorbs the kinetic energy generated by the battery cell 600 during the conveying process through the anti-collision mechanism 500, which plays a buffering role on the battery cell 600 during conveying or sliding, and avoids the battery cell 600 from impacting the tail of the bearing mechanism 200 with a certain kinetic energy due to deviation in the conveying stroke, which would cause edge cracking or overall breakage, thereby improving the yield of battery cell 600 production.

[0034] It is understood that in some embodiments, there are two first sprockets 110 and two second sprockets 120. The two first sprockets 110 are connected by a connecting shaft. Similarly, the two second sprockets 120 are connected by a connecting shaft. There are two chains 130, each chain 130 is wound around the corresponding first sprocket 110 and second sprocket 120. The carrying mechanism 200 is disposed on the two chains 130, and a conveying channel for the battery cell 600 is formed between the two sprockets.

[0035] Reference Figure 6 In some embodiments, the supporting mechanism 200 includes a first supporting member 210 and a second supporting member 220. The first supporting member 210 and the second supporting member 220 are mostly made of metal materials (such as stainless steel). The first supporting member 210 and the second supporting member 220 are opposite to each other and spaced apart. Both the first supporting member 210 and the second supporting member 220 are fixedly connected to the chain 130 of the flipping mechanism 100. A battery cell 600 accommodating space 230 is formed between the first supporting member 210 and the second supporting member 220. Both the first supporting member 210 and the second supporting member 220 are provided with limiting grooves 240. The first conveying mechanism 300 is used to accommodate a portion of the battery cell 600. One end of the limiting groove 240 has an opening 241 for the first conveying mechanism 300 to convey the battery cell 600 into the accommodating space 230. The other end of the limiting groove 240, away from the opening 241, has a limiting part 242. After the first conveying mechanism 300 conveys the battery cell 600 into the accommodating space 230, both sides of the battery cell 600 are accommodated within the limiting grooves 240 of the first support member 210 and the second support member 220. The sidewalls of the limiting grooves 240 can limit the battery cell 600 to prevent it from falling off the support mechanism 200. After the first conveying mechanism 300 conveys the battery cell 600 to the corresponding support mechanism 200, the battery cell 600 is carried into the drying oven by the operation of the flipping mechanism 100 for drying.

[0036] Refer to Figure 1 and Figure 2. Figure 3 , Figure 6In some embodiments, the anti-collision mechanism 500 includes a first anti-collision mechanism 510, which is mounted on a bracket of the first conveying mechanism 300 near the limiting part 242. The contact surface between the first anti-collision mechanism 510 and the battery cell 600 is located within the accommodating space 230. There is a first gap X between the contact surface between the first anti-collision mechanism 510 and the battery cell 600 and the plane where the limiting part 242 of the corresponding bearing mechanism 200 is located. The first gap X can be set according to specific circumstances. Typically, the first gap X is set to 4-6 mm.

[0037] When the transport distance of the battery cell 600 is too long, it will impact the first anti-collision mechanism 510 with a certain kinetic energy, thereby preventing the battery cell 600 from directly impacting the tail of the carrying mechanism 200. When the transport distance of the battery cell 600 is too short, the distance between the battery cell 600 and the tail of the carrying mechanism 200 is greater than the first interval X, and it will not impact the tail of the carrying mechanism 200, thereby preventing the battery cell 600 from directly impacting the tail of the carrying mechanism 200 and causing the edge of the battery cell 600 to crack or the whole battery cell to break.

[0038] Refer to Figure 1. Figure 4 , Figure 5 , Figure 6 In some embodiments, the anti-collision mechanism 500 further includes a second anti-collision mechanism 520. The second anti-collision mechanism 520 is disposed on the drive shaft of the first sprocket 110 and rotates synchronously with the first sprocket 110. The contact surface between the second anti-collision mechanism 520 and the battery cell 600 is located within the accommodating space 230. There is a second interval Y between the contact surface between the second anti-collision mechanism 520 and the battery cell 600 and the plane where the limiting part 242 of the corresponding bearing mechanism 200 is located. The second interval Y can be set according to specific circumstances. In general, the second interval Y is set to 2-3mm.

[0039] The chain 130 of the flipping mechanism 100 rotates and drives the carrying mechanism 200, thereby realizing the automatic flipping of the battery cell 600. During the flipping process, the battery cell 600 slides down on the carrying mechanism 200 by gravity and elastically abuts against the second anti-collision mechanism 520. Since the second distance Y between the second anti-collision mechanism 520 and the tail of the carrying mechanism 200 is 2-3mm, the battery cell 600 can be prevented from directly hitting the tail of the carrying mechanism 200, thus avoiding edge cracking or overall breakage of the battery cell 600.

[0040] In the above embodiments, the superimposed protective effect of the first anti-collision mechanism 510 and the second anti-collision mechanism 520 can effectively prevent the battery cell 600 from being damaged by impacting the tail of the bearing mechanism 200 with a certain kinetic energy due to deviation in the transmission stroke, thereby improving the yield rate of battery cell 600 production.

[0041] Reference Figure 6 , Figure 8 In some embodiments, the first anti-collision mechanism 510 includes a connector 511, a buffer pad 512, and a first anti-collision pad 513. The connector 511 is fixedly mounted on the bracket of the first conveying mechanism 300, the buffer pad 512 is fixed to the connector 511, and the first anti-collision pad 513 is disposed on the buffer pad 512. The connector 511 may be made of metal (such as stainless steel), the buffer pad 512 may be made of high-temperature resistant material with shock-absorbing properties (such as Teflon), and the first anti-collision pad 513 may be made of high-temperature resistant material (such as PI). The buffer pad 512 may be fixed to the connector 511 by fasteners such as bolts, and the first anti-collision pad 513 may be directly pasted onto the buffer pad 512.

[0042] In some embodiments, the first anti-collision pad 513 is provided in multiple layers, and the multiple layers of the first anti-collision pad 513 are pasted together in sequence, which can further reduce the impact kinetic energy of the battery cell 600 and improve the anti-collision performance of the first anti-collision mechanism 510.

[0043] Reference Figure 6 , Figure 7 In some embodiments, the second anti-collision mechanism 520 includes a connecting plate 521 and a second anti-collision pad 522. The connecting plate 521 is disposed on the drive shaft of the first sprocket 110 and rotates synchronously with the first sprocket 110. The second anti-collision pad 522 is disposed on the outer peripheral surface of the connecting plate 521. The connecting plate 521 may be made of metal material (such as stainless steel), and the second anti-collision pad 522 may be made of high temperature resistant material (such as PI material). The second anti-collision pad 522 may be directly pasted on the outer peripheral surface of the connecting plate 521.

[0044] In some embodiments, the second anti-collision pad 522 is provided in multiple layers, and the multiple layers of the second anti-collision pad 522 are pasted together in sequence, which can further reduce the impact kinetic energy of the battery cell 600 when it slides down and improve the anti-collision performance of the second anti-collision mechanism 520.

[0045] It should be noted that in some embodiments, the anti-collision mechanism 500 may also be provided on the surface of the limiting part 242 facing the limiting groove 240. That is, the surface of the limiting part 242 of each bearing mechanism 200 facing the limiting groove 240 is provided with an anti-collision mechanism 500. The anti-collision mechanism 500 may be made of a high-temperature resistant material (such as PI material). Although the anti-collision mechanism 500 with this structure is more troublesome to assemble, it can simultaneously meet the anti-collision requirements of the first conveying mechanism 300 conveying the battery cell 600 to the bearing mechanism 200 and the anti-collision requirements of the battery cell 600 when it flips and slides down.

[0046] The vertical drying oven according to the second aspect of this utility model includes the material conveying device described above. The vertical drying oven of this utility model uses the aforementioned material conveying device, and the anti-collision mechanism 500 absorbs the kinetic energy generated by the battery cell 600 during conveying, providing a buffering effect on the battery cell 600 during conveying or sliding. This prevents the battery cell 600 from impacting the tail of the bearing mechanism 200 with a certain kinetic energy due to deviations in the conveying stroke, thus avoiding edge chipping or overall breakage, and improving the yield rate of the battery cell 600.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A material conveying device for conveying sheet materials in a vertical drying oven, characterized in that, include: A flipping mechanism includes a first sprocket, a second sprocket, and a chain, the chain being wound around the first sprocket and the second sprocket; Multiple support mechanisms are used to support materials. The support mechanisms are fixed to the chain. The multiple support mechanisms are spaced apart along the chain and extend in a direction away from the chain. The first conveying mechanism is connected to the corresponding carrying mechanism and is used to convey materials to the corresponding carrying mechanism. The second conveying mechanism is connected to the corresponding carrying mechanism and is used to receive and convey the material falling from the corresponding carrying mechanism. The anti-collision mechanism is used to elastically abut against the material on the corresponding load-bearing mechanism to buffer the kinetic energy generated by the material during conveying or flipping.

2. The material conveying device according to claim 1, characterized in that, The bearing mechanism includes a first bearing member and a second bearing member, which are opposite to each other and spaced apart. A material receiving space is formed between the first bearing member and the second bearing member. Both the first bearing member and the second bearing member are provided with limiting grooves. The limiting grooves are used to receive part of the material. One end of the limiting groove has an opening for the first conveying mechanism to convey material into the receiving space. The other end of the limiting groove away from the opening is provided with a limiting part.

3. The material conveying device according to claim 2, characterized in that, The anti-collision mechanism includes a first anti-collision mechanism, which is mounted on the support of the first conveying mechanism near the limiting part. The contact surface between the first anti-collision mechanism and the material is located within the accommodating space. There is a gap between the contact surface between the first anti-collision mechanism and the material and the plane where the limiting part of the corresponding bearing mechanism is located.

4. The material conveying device according to claim 3, characterized in that, The anti-collision mechanism further includes a second anti-collision mechanism, which is disposed on the drive shaft of the first sprocket and rotates synchronously with the first sprocket. The contact surface between the second anti-collision mechanism and the material is located within the accommodating space, and there is a gap between the contact surface between the second anti-collision mechanism and the material and the plane where the limiting part of the corresponding bearing mechanism is located.

5. The material conveying device according to claim 3 or 4, characterized in that, The first anti-collision mechanism includes a connector, a buffer pad, and a first anti-collision pad. The connector is fixedly mounted on the support of the first conveying mechanism, the buffer pad is fixed to the connector, and the first anti-collision pad is disposed on the buffer pad.

6. The material conveying device according to claim 5, characterized in that, The first anti-collision pad has multiple layers.

7. The material conveying device according to claim 4, characterized in that, The second anti-collision mechanism includes a connecting plate and a second anti-collision pad. The connecting plate is disposed on the drive shaft of the first sprocket and rotates synchronously with the first sprocket. The second anti-collision pad is disposed on the outer peripheral surface of the connecting plate.

8. The material conveying device according to claim 7, characterized in that, The second anti-collision pad has multiple layers.

9. The material conveying device according to claim 2, characterized in that, The anti-collision mechanism is located on the surface of the limiting part facing the limiting groove.

10. A vertical drying oven, characterized in that, Includes the material conveying device as described in any one of claims 1 to 9.

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