CN211616956U

CN211616956U - Belt formula silicon chip transmission device and have its screen printing machine

Info

Publication number: CN211616956U
Application number: CN201922321282.6U
Authority: CN
Inventors: 葛景; 胡飞; 牛明
Original assignee: Suzhou Chenjin Intelligent Technology Co ltd
Current assignee: Linton Kayex Technology Co Ltd
Priority date: 2019-12-21
Filing date: 2019-12-21
Publication date: 2020-10-02
Anticipated expiration: 2029-12-21

Abstract

The utility model discloses a belt formula silicon chip transmission device and have its screen printing machine. This belt formula silicon chip transmission device includes: a base having a working surface; the pair of guide rollers are respectively arranged on two opposite sides of the base; the driving roller is arranged below the base; and the belt is sleeved between the pair of guide rollers and the driving roller wheel so as to be driven by the driving roller wheel to rotate, and the part of the belt positioned on the working surface forms a bearing surface for bearing the silicon wafer. The utility model provides a belt formula silicon chip transmission device to the belt is as the carrier that bears and transmit the silicon chip, and the belt is directly overlapped and is put a pair of the deflector roll reaches between the initiative running roller, the dismouting of being convenient for, the belt only by a driving source drive, can be suitable for to simplify drive structure and corresponding driving medium and connecting piece etc. make this belt formula silicon chip transmission device's control mode also become simple, in addition, the belt can use for a long time, and the cost is lower, and it is simple and easy to change the operation.

Description

Belt formula silicon chip transmission device and have its screen printing machine

Technical Field

The utility model relates to a solar cell production technical field, specific be a belt formula silicon chip transmission device and have its screen printing machine.

Background

In the production equipment of the solar cell, a rotary table of a screen printing machine is generally provided with a plurality of roll paper type conveying devices, the roll paper type conveying devices are used for receiving the silicon wafers and adjusting the positions of the silicon wafers borne by the roll paper by driving the roll paper to rotate forwards and backwards, so that the printing device can print grid lines on the silicon wafers accurately.

The existing roll paper type transmission device in the market all uses roll paper in a roll shape, and is matched with two motors to be used as power sources for driving the roll paper to be wound forwards or reversely, one of the motors is used as an active mode, the other motor is used as a passive mode, and the forward and reverse rotation of the roll paper is realized through the exchange of motion modes. For example, chinese patent publication No. CN107351524A, entitled winding mechanism and screen printing machine, provides a winding mechanism including a first winding roller, a second winding roller, and a power take-off capable of providing a positive rotational force and a reverse rotational force. The first winding roller and the second winding roller are in selective transmission connection with the power output device.

The prior roll paper type conveying device needs to control two motors to operate, has complex control program, is inconvenient to replace roll paper in a roll shape, and is easy to cause the condition that a roll paper is loosened in the running process. In addition, because the spool of spool form when the rolling on two running rollers, one side stock form diameter is big, and opposite side stock form diameter is little for the motor inertia inequality of driving two running rollers respectively, and then easily make stock form tension lead to the phenomenon of stopping operation.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect among the prior art, the embodiment of the utility model provides a belt formula silicon chip transmission device and have its screen printing machine, it need not frequent change as the carrier that bears and transmit the silicon chip through the belt.

The embodiment of the application discloses: a belt type silicon wafer conveying device comprises:

a base having a working surface;

the pair of guide rollers are respectively arranged on two opposite sides of the base;

the driving roller is arranged below the base;

and the belt is sleeved between the pair of guide rollers and the driving roller wheel so as to be driven by the driving roller wheel to rotate, and the part of the belt positioned on the working surface forms a bearing surface for bearing the silicon wafer.

Further, the surface of the belt for bearing the silicon wafer is provided with a Teflon coating.

Further, the base has a first air vent communicating with the work surface, the air vent communicating with a vacuum source.

Further, the working surface is provided with an air passage which is inwards concave, and the air passage is communicated with the first air hole.

Furthermore, the belt is provided with second air holes penetrating through the belt, and the second air holes are densely distributed in the belt.

Furthermore, the belt type silicon wafer transmission device further comprises a cleaning part fixed relative to the base, and the cleaning part is abutted to the surface of the belt for bearing the silicon wafer.

Further, the cleaning part comprises a brush bar and/or a brush roller.

Further, the belt type silicon wafer conveying device also comprises a tensioning part for tensioning the belt.

Furthermore, the belt-type silicon wafer conveying device further comprises a driving part for driving the belt to rotate, and the driving part is arranged in a space formed by the belt in an enclosing manner.

The embodiment of the application also discloses: a screen printer comprises a printing device and a rotary table, wherein the rotary table is provided with a plurality of belt type silicon wafer transmission devices.

The utility model has the advantages as follows:

the utility model provides a belt formula silicon chip transmission device to the belt is as the carrier that bears and transmit the silicon chip, because the belt is tubular structure, it can directly overlap and put a pair ofly the deflector roll reaches between the initiative running roller, the dismouting of being convenient for, simultaneously, the belt can only be by driving source drive corotation such as a motor or reversal after the tensioning, compare in current stock form transmission device, this belt formula silicon chip transmission device can be suitable for to simplify drive structure and corresponding driving medium and connecting piece etc. for this stock form transmission device's control mode also becomes simple, in addition, the belt can be used for a long time, and need not frequently to change in the short time, the use that reduces the stock form consumptive material is few, the cost is lower, and it is simple and easy to change the operation.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a matching structure of a turntable and a belt-type silicon wafer transmission device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a belt-type silicon wafer conveying device in an embodiment of the present invention.

Reference numerals of the above figures:

100. a turntable; 200. a belt type silicon wafer transmission device; 300. a silicon wafer;

1. a base; 11. a working surface; 2. a guide roller; 3. a driving roller; 4. a belt; 41. a bearing surface; 5. a drive section; 51. a direct current motor; 52. a synchronous pulley mechanism; 6. tensioning roller.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The present embodiment provides a screen printing machine, which includes a printing unit (not shown) disposed adjacent to the rotary table 100, and a rotary table 100 on which a plurality of belt-type silicon wafer transfer units 200 for carrying and transferring silicon wafers 300 are disposed.

Referring to fig. 1, the turntable 100 includes four belt-type silicon wafer transfer devices 200 that are equally spaced at the edge of the circular turntable 100 and are sequentially and alternately replaced after the turntable 100 rotates 90 degrees, so that the four belt-type silicon wafer transfer devices 200 can be moved to the lower side of the printing device with the turntable 100 one by one to perform electrode printing on the silicon wafer 300 carried by the belt-type silicon wafer transfer device 200.

Referring to fig. 2, the belt-type silicon wafer transferring apparatus 200 includes a base 1, a pair of guide rollers 2, a driving roller 3, and a belt 4. Wherein the base 1 has a working surface 11, and the working surface 11 can be a flat surface to support the belt 4 so that the belt 4 can bear the silicon wafer 300. The pair of guide rollers 2 are respectively arranged on two opposite sides of the base 1, and the axial leads of the pair of guide rollers 2 are parallel. The driving roller 3 is arranged below the base 1. The belt 4 is sleeved between the pair of guide rollers 2 and the driving roller 3 to be driven by the driving roller 3 to rotate, and the part of the belt on the working surface 11 forms a bearing surface 41 for bearing the silicon wafer 300.

By the above structure, the belt 4 of the belt-type silicon wafer transmission device 200 is used as a carrier for carrying and transmitting the silicon wafer 300, and the belt 4 is driven to rotate by the driving roller 3, so that the belt-type silicon wafer transmission device 200 can receive the silicon wafer 300 transmitted by the transmission equipment (such as a conveyor belt) at the upstream of the turntable 100, and can adjust the position of the silicon wafer 300 on the carrying surface 41 by small-amplitude forward rotation or overturning, so that the position of the silicon wafer 300 is suitable for electrode printing, and in addition, after the printing of the silicon wafer 300 is completed, the driving roller 3 can continuously drive the belt 4 to rotate to transfer the silicon wafer 300 to the transmission equipment at the downstream of the turntable 100.

It should be noted that, in this embodiment, since the belt 4 is a cylindrical structure, it can be directly sleeved between the pair of guide rollers 2 and the driving roller 3, which is convenient for disassembly and assembly, and meanwhile, the belt 4 can be driven by only one driving source to rotate forward or backward after being tensioned, compared with the existing roll paper type silicon wafer conveying device, the belt type silicon wafer conveying device 200 can be adapted to simplify the driving structure and the corresponding transmission parts and connecting parts, so that the control mode of the roll paper type conveying device is also simplified. In addition, the belt 4 can be used for a long time without frequent replacement in a short time, the use of the consumable materials for reducing roll paper is less, the cost is lower, and the replacement operation is simple and easy.

Specifically, the belt-type silicon wafer conveying device 200 further comprises a tensioning part for tensioning the belt 4, wherein the tensioning part can be a tensioning roller 6 with an adjustable position and the like. The belt-type silicon wafer conveying device 200 further comprises a driving part 5 for driving the belt 4 to rotate, and the driving part 5 can be arranged in a space formed by the belt 4 so as to save space occupation. The driving part 5 may include a dc motor 51 and a synchronous pulley mechanism 52 to reliably drive the driving roller 3 to rotate and further drive the belt 4 to rotate.

In order to reduce the friction between the belt 4 and the silicon wafer 300 in the transmission process, the surface of the belt 4 for bearing the silicon wafer 300 is provided with a teflon coating, the friction coefficient of the teflon is extremely low, and the silicon wafer 300 is prevented from being scratched due to excessive friction between the belt 4 and the silicon wafer 300. The teflon material has the characteristics of acid resistance, alkali resistance and resistance to various organic solvents, so that the belt 4 has a longer service life. In addition, the teflon coating has the advantages of being "non-stick" and "easy to clean", so that the slurry dropping on the surface of the belt 4 during the printing process can be easily removed, and the silicon wafer 300 is prevented from being damaged after the slurry is hardened and adhered to the belt 4.

Since the silicon wafer 300 is required to have a stable position when being printed, the silicon wafer 300 can be stably fixed on the carrying surface 41 of the belt 4 by means of vacuum suction. Specifically, the susceptor 1 has a first air hole communicated to the working surface 11, the air hole is communicated with a vacuum source, the belt 4 has a second air hole penetrating through the belt 4, and the second air hole is densely distributed on the belt 4 so as to enable the second air hole to be communicated with the first air hole, so that the silicon wafer 300 carried on the belt 4 can be firmly sucked on the carrying surface 41 of the belt 4 under the vacuum negative pressure action of the second air hole and the first air hole.

In a preferred embodiment, the working surface 11 has an air passage recessed inwards, the air passage is communicated with the first air hole, and the air passage extending over the working surface 11 can ensure that the second air hole is communicated with the first air hole to form a vacuum air path.

In order to keep the surface of the belt 4 clean, the belt-type silicon wafer transfer apparatus 200 further includes a cleaning unit fixed to the base 1, the cleaning unit being in contact with the surface of the belt 4 for receiving the silicon wafer 300, so that when the belt 4 rotates, the belt 4 moves toward the cleaning unit, and the cleaning unit removes the foreign substances remaining on the belt 4. In particular, the cleaning part may comprise a brush bar and/or a brush roller.

As in an alternative embodiment, the brush strip is arranged at the upstream end of the working surface 11 of the base 1, which is flowed towards the belt 4, and is abutted against the outer surface of the belt 4 for bearing the silicon wafer 300, and when the belt 4 rotates, the impurities remained on the belt are swept away by the brush strip.

In another alternative embodiment, a brush roller may be further disposed at an upstream end of the belt 4 flowing toward the working surface 11 of the base 1, such that the brush roller abuts against an outer surface of the belt 4 for supporting the silicon wafer 300 and rotates relative to the belt 4, and the rotation direction of the brush roller and the rotation direction of the belt 4 are the same, so that the two contacting portions can move towards each other, and impurities left on the belt 4 can be effectively swept away.

Preferably, the brush roller can also be driven by the driving portion 5, and the linear velocity of the brush roller is greater than the linear velocity of the belt 4, so as to improve the cleaning effect, and an implementer can configure the brush roller according to parameters such as the outer diameter of the brush roller, the perimeter of the belt 4, and the transmission ratio between parts such as a gear or a synchronizing wheel of the driving mechanism, and the like, and the specific configuration method and the like are the prior art, and no further description is given here.

The utility model discloses the principle and the implementation mode of the utility model are explained by applying the concrete embodiment, and the explanation of the above embodiment is only used for helping to understand the technical scheme and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims

1. A belt type silicon wafer conveying device is characterized by comprising:

a base having a working surface;

the driving roller is arranged below the base;

2. The belt-type silicon wafer conveying device according to claim 1, wherein the surface of the belt for carrying the silicon wafers is provided with a teflon coating.

3. The belt-type silicon wafer conveying device of claim 1, wherein the base has a first air hole communicated to the working surface, and the air hole is communicated with a vacuum source.

4. The belt-type silicon wafer conveying device of claim 3, wherein the working surface is provided with an air channel which is concave inwards and is communicated with the first air hole.

5. The belt-type silicon wafer conveying device according to any one of claims 1 to 4, wherein the belt is provided with second air holes penetrating through the belt, and the second air holes are densely distributed on the belt.

6. The belt-type silicon wafer conveying device according to claim 1, further comprising a cleaning part fixed to the base, wherein the cleaning part abuts against a surface of the belt for receiving the silicon wafer.

7. The belt-type silicon wafer conveying device according to claim 6, wherein the sweeping part comprises a brush bar and/or a brush roller.

8. The belt-type silicon wafer conveying device according to claim 1, further comprising a tensioning part for tensioning the belt.

9. The belt-type silicon wafer conveying device according to claim 1, further comprising a driving part for driving the belt to rotate, wherein the driving part is disposed in a space defined by the belt.

10. A screen printing machine comprising a printing unit and a rotary table on which a plurality of belt-type silicon wafer transfer units according to any one of claims 1 to 9 are provided.