CN220484773U - Screen printing transfer chain and printing machine - Google Patents

Abstract

The utility model discloses a screen printing transfer chain and printing machine, the screen printing transfer chain includes: the circulating reflux assembly comprises a first straight line section and reflux sections with two ends respectively connected with two ends of the first straight line section, and the circulating reflux assembly has a circulating conveying direction; the carrying component is connected with the circulating reflux component and is used for carrying a silicon wafer; the carrier assembly can move along the conveying direction in the first straight line section and enable the silicon wafer to move to the screen printing processing station, and the carrier assembly can move along the backflow section from the tail end of the first straight line section along the conveying direction to the head end of the first straight line section along the conveying direction, so that the screen printing conveying line in the embodiment can improve the conveying efficiency of the large-size silicon wafer. The utility model is applied to the field of screen printing equipment.

Description

Screen printing transfer chain and printing machine

Technical Field

The utility model relates to the field of screen printing equipment, in particular to a screen printing conveying line and a printing machine.

Background

In the production process of crystalline silicon solar cells, silicon wafers are subjected to processes such as screen printing. In the related art, a silicon wafer is subjected to station switching by using a turntable, for example, a visual positioning station and a printing station are arranged around the turntable, and after the silicon wafer is positioned at the visual positioning station, the turntable rotates to the printing station and then prints the silicon wafer. However, in the case of a silicon wafer having a large size, such as a double half wafer, the diameter of the turntable needs to be increased accordingly, resulting in an increase in rotational inertia, and in order to avoid the positional deviation of the silicon wafer due to rotational inertia, the rotational speed of the turntable needs to be reduced, which results in a decrease in the conveying efficiency, thereby affecting the conveying efficiency of the whole production line.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a screen printing conveying line which can improve the conveying efficiency of large-size silicon wafers.

A printing machine with the screen printing conveyor line is also provided.

According to an embodiment of the first aspect of the present utility model, a screen printing conveyor line includes:

the circulating reflux assembly comprises a first straight line section and reflux sections with two ends respectively connected with the two ends of the first straight line section, and the circulating reflux assembly has a circulating conveying direction;

the carrier assemblies are connected to the circulating reflux assembly and are used for carrying silicon wafers;

the object carrying assembly can move along the conveying direction at the first straight line section and enable the silicon wafer to move to the printing processing station, and the object carrying assembly can move along the backflow section from the tail end of the first straight line section along the conveying direction to the head end of the first straight line section along the conveying direction.

The screen printing conveyor line according to the embodiment of the first aspect of the utility model has at least the following beneficial effects:

1. at the head end of the first straight line section along the conveying direction, the object carrying assembly carries the silicon wafer, the silicon wafer is conveyed in the first straight line section along the conveying direction and passes through a screen printing processing station to carry out screen printing on the silicon wafer, the influence of rotational inertia is effectively avoided due to the straight line conveying, and the large-size silicon wafer has high printing precision while having high conveying speed, so that the conveying efficiency of the large-size silicon wafer is improved;

2. at the tail end of the first straight line section along the conveying direction, the silicon wafer is transferred by the carrying component and separated from the screen printing conveying line, and the carrying component moves to the head end of the first straight line section along the conveying direction again along the backflow section, so that the carrying component repeatedly transfers the silicon wafer, and the conveying efficiency of the silicon wafer is improved.

According to some embodiments of the utility model, the circulation reflux assembly is an annular base rail, and the carrier assembly includes a stage and a reflux drive assembly coupled to the stage, the reflux drive assembly being movable relative to the base rail to drive the stage along the base rail.

According to some embodiments of the utility model, the return drive assembly comprises a return drive source coupled to the stage and at least one pair of clamping guide wheel sets drivingly coupled to the return drive source, the clamping guide wheel sets being clamped to the base rail and movable along the base rail under the drive of the return drive source.

According to some embodiments of the utility model, the clamping guide wheel set comprises a plurality of first clamping wheels and a plurality of second clamping wheels, the first clamping wheels are opposite to the second clamping wheels and clamped on the base rail and can move along the base rail, at least one of the first clamping wheels and the second clamping wheels is provided with a first guide part, the base rail is provided with a second guide part corresponding to the first guide part, and the first guide part is connected with the second guide part so as to guide the clamping guide wheel set to move along the base rail.

According to some embodiments of the utility model, the carrier assembly further comprises an adjusting belt and two adjusting driving assemblies connected to the object stage, wherein two ends of the adjusting belt are respectively connected with the two adjusting driving assemblies in a transmission manner, and the adjusting belt between the two adjusting driving assemblies is positioned on the surface of the object stage and is used for carrying the silicon wafer.

According to some embodiments of the utility model, the adjustment drive assembly comprises an adjustment drive source, an adjustment shaft, a magnetic wheel and a clutch, wherein the adjustment drive source is connected to the objective table, the adjustment shaft is rotatably connected to the objective table, the adjustment shaft is in transmission connection with the adjustment drive source through the magnetic wheel and the clutch, and the adjustment shaft is connected with one end of the adjustment belt.

According to some embodiments of the utility model, the carrier assembly further comprises a vacuum suction member connected to the stage, the stage is provided with a vacuum suction channel communicating a top surface of the stage and the vacuum suction member, and the vacuum suction channel forms a vacuum suction port for sucking the silicon wafer on the top surface.

According to some embodiments of the utility model, the recirculation assembly is disposed vertically and the first line section is disposed horizontally above the recirculation section.

A printer according to an embodiment of the second aspect of the present utility model includes:

the wafer feeding and conveying module is used for conveying the silicon wafers;

according to the screen printing conveyor line, the screen printing conveyor line is used for receiving the silicon wafers conveyed by the wafer feeding conveying module;

the detection position and the first printing position are sequentially arranged along the conveying direction, so that the silicon wafer which is positioned on the first straight line section and carried by the carrying component is sequentially processed along the conveying direction, the detection position is used for detecting the position of the silicon wafer, and the first printing position is used for printing the silicon wafer with patterns passing through the detection position;

and the wafer discharging and conveying module is used for receiving the silicon wafer printed by the screen printing and conveying line.

The printer according to the embodiment of the second aspect of the utility model has at least the following advantages: the screen printing transfer chain can improve the conveying efficiency of jumbo size silicon chip, and then improves holistic conveying efficiency.

According to some embodiments of the utility model, the printing device further comprises a second printing position, the first printing position and the second printing position are sequentially arranged along the conveying direction, and a waiting position for adjusting the conveying beat is arranged between the first printing position and the detecting position.

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 schematic structural view of a screen printing conveyor line according to one embodiment of the utility model;

FIG. 2 is an enlarged schematic view of a portion A of FIG. 1;

FIG. 3 is a schematic side view of a screen printing conveyor line according to one embodiment of the utility model;

FIG. 4 is a schematic view showing the structure of a carrier assembly of a screen printing conveyor line according to one embodiment of the utility model;

fig. 5 is a schematic view of a printer according to an embodiment of the present utility model.

Reference numerals:

a screen printing transfer line 1000;

a recirculation assembly 100; a first straight line segment 110; a return section 120; a base rail 130; a second guide 131; a first slide rail 132;

a carrier assembly 200; a stage 210; a grip guide wheel set 220; a first clamping wheel 221; a second clamping wheel 222; a first guide 223; adjusting the drive assembly 230; adjusting the driving source 231; an adjustment shaft 232; a magnetic wheel 233; a clutch 234;

a feeding and conveying module 2000;

detection bit 3000;

a first print station 4000;

a sheet discharging and conveying module 5000;

a second print station 6000;

waiting bit 7000.

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 the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a plurality means one and more, and a plurality means two and more. 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.

Referring to fig. 1 to 4, an embodiment of a first aspect of the present utility model proposes a screen printing transfer line 1000, comprising: the circulating reflux assembly 100 and a plurality of carrying assemblies 200, wherein the circulating reflux assembly 100 comprises a first straight line segment 110 and a reflux segment 120 with two ends respectively connected with two ends of the first straight line segment 110, and has a circulating conveying direction; the carrier assembly 200 is connected to the circulation reflux assembly 100, and the carrier assembly 200 is used for carrying silicon wafers; the carrier assembly 200 can move along the conveying direction at the first straight line segment 110, and enable the silicon wafer to move to the screen printing processing station, and the carrier assembly 200 can move along the reflow section 120 from the tail end of the first straight line segment 110 along the conveying direction to the head end of the first straight line segment 110 along the conveying direction, so that the screen printing conveying line 1000 in the embodiment can improve the conveying efficiency of the large-size silicon wafer.

In this embodiment, the circulation assembly 100 is disposed in a ring shape, and the conveying direction is a clockwise loop direction or a counterclockwise loop direction. It should be understood that. The circulation reflux assembly 100 is divided into a first straight line segment 110 and a reflux segment 120 according to the functions performed, wherein the first straight line segment 110 refers to: the annular circulation reflux assembly 100 plays a part of a linear conveying function part, and a screen printing processing station is arranged in the area, so that when a silicon wafer is processed, the silicon wafer can be conveyed in a linear direction and passes through the screen printing processing station, no moment of inertia exists in the conveying process of the silicon wafer, the position accuracy of the silicon wafer conveying is higher, the conveying speed can be further improved, and the conveying speed is further improved while the conveying accuracy is improved; and reflux section 120 refers to: the annular recirculation assembly 100 serves as a recirculation zone for recirculating the trailing end of the first linear segment 110 in the conveying direction to the leading end of the first linear segment 110 in the conveying direction.

The carrier assembly 200 carries silicon wafers and is connected to the circulating reflux assembly 100 to move circularly along the conveying direction of the circulating reflux assembly 100, so that the carrier assembly 200 can repeatedly move along the conveying direction at the first straight line segment 110 to repeatedly print different silicon wafers at the first straight line segment 110, and the processing efficiency is higher.

It is to be appreciated that, at the head end of the first straight line segment 110 along the conveying direction, the carrier assembly 200 carries the silicon wafer, conveys the silicon wafer along the conveying direction at the first straight line segment 110, and passes through the screen printing processing station to perform screen printing on the silicon wafer, so that the influence of rotational inertia is effectively avoided by straight line conveying, and the large-size silicon wafer has high printing precision while having high conveying speed, so that the conveying efficiency of the large-size silicon wafer is improved; at the tail end of the first straight line segment 110 along the conveying direction, the carrier assembly 200 transfers the silicon wafer, the silicon wafer is separated from the screen printing conveying line 1000, and the carrier assembly 200 moves to the head end of the first straight line segment 110 along the conveying direction along the reflow segment 120 again, so that the carrier assembly 200 repeatedly transfers the silicon wafer, and the conveying efficiency of the silicon wafer is improved.

Referring to fig. 1 and 5, in some embodiments of the present utility model, the circulation assembly 100 is an annular base rail 130, and the carrier assembly 200 includes a stage 210 and a return driving assembly connected to the stage 210, and the return driving assembly is capable of moving relative to the base rail 130 to drive the stage 210 to move along the base rail 130.

It should be understood that the screen printing station includes a detection position 3000 and a printing position, the space occupied by the apparatus of the detection position 3000 is small, the space occupied by the apparatus of the printing position is large, resulting in that the space occupied by the detection position 3000 is small, the space occupied by the printing position is large, when the number of the detection position 3000 or the printing position is plural, the interval distance between two adjacent detection positions 3000 is less than the interval distance between the detection position 3000 and the adjacent printing position is less than the interval distance between the two printing positions, if the printing station is conveyed at equal intervals, the interval between the equal intervals needs to be the maximum interval, that is, the interval between the equal intervals needs to be equal to the interval between the detection position 3000 and the adjacent printing position or the interval between the two printing positions, resulting in that the whole conveying distance is elongated, and the conveying efficiency is reduced naturally due to the increase of the conveying distance.

It is appreciated that the carrier assemblies 200 actively move on the base rail 130 through the backflow driving assembly, so that different carrier assemblies 200 can move different distances and further have different distances, different spacing distances between the two carrier assemblies 200 can be controlled in the conveying process, unequal-distance conveying is achieved, the overall conveying distance can be effectively reduced, and conveying efficiency is naturally improved due to the fact that the conveying distance is reduced.

As another embodiment, the circulation reflux assembly 100 is an annular conveying belt, and the carrying assembly 200 is connected to the conveying belt and moves along the conveying direction under the driving of the conveying belt, so that the carrying assembly 200 with equal spacing is conveyed by the annular conveying belt, and the equidistant conveying is realized.

Referring to fig. 1, 2 and 3, in some embodiments of the present utility model, the reflow driving assembly includes a reflow driving source connected to the stage 210 and at least one pair of clamping guide wheel sets 220 drivingly connected to the reflow driving source, wherein the clamping guide wheel sets 220 are clamped to the base rail 130 and can move along the base rail 130 under the driving of the reflow driving source.

It should be appreciated that the base rail 130 is clamped by the clamping guide wheel set 220, so that the clamping guide wheel set 220 can move circularly along the conveying direction through the base rail 130, even when the carrier assembly 200 is in an inverted state, the carrier assembly 200 can still move along the base rail 130, and the clamping guide wheel set 220 is driven by the backflow driving source, so as to realize active conveying.

Specifically, the base rail 130 includes a first slide rail 132 and a second slide rail that are horizontally and symmetrically arranged, the first slide rail 132 and the second slide rail are arranged at intervals, the reflow driving assembly includes two pairs of clamping guide wheel sets 220, and the two pairs of clamping guide wheel sets 220 are horizontally and symmetrically arranged at two sides of the objective table 210 and are respectively connected with the first slide rail 132 and the second slide rail in a transmission manner, so that the silicon wafer conveying device is more stable when the object carrying assembly 200 conveys the silicon wafer. It should be understood that the number of the clamping guide wheel sets 220 may be one, and the base rail 130 has a sliding rail, and when the clamping guide wheel sets 220 are located at one side of the objective table 210, the objective table 210 is overhanging-shaped and fixed on the sliding rail; when the clamping guide wheel set 220 is located at the center of the stage 210, the stage 210 is disposed substantially symmetrically about the slide rail. One set of clamping guide wheel sets 220 can be an up-down clamping slide rail or a left-right clamping slide rail, and is not limited thereto, and only the clamping guide wheel sets 220 can be maintained to move along the conveying direction.

Referring to fig. 1, 2 and 3, in some embodiments of the present utility model, the clamping guide wheel set 220 includes a plurality of first clamping wheels 221 and a plurality of second clamping wheels 222, the first clamping wheels 221 and the second clamping wheels 222 are disposed opposite to each other and clamped on the base rail 130 and can move along the base rail 130, at least one of the first clamping wheels 221 and the second clamping wheels 222 is provided with a first guide portion 223, the base rail 130 is provided with a second guide portion 131 corresponding to the first guide portion 223, and the first guide portion 223 is connected to the second guide portion 131 to guide the clamping guide wheel set 220 to move along the base rail 130.

It should be understood that the pair of clamping guide wheel sets 220 includes two first clamping wheels 221 and two second clamping wheels 222, one pair of the first clamping wheels 221 and the second clamping wheels 222 are relatively clamped and connected to the first sliding rail 132, and the other pair of the first clamping wheels 221 and the second clamping wheels 222 are relatively clamped and connected to the first sliding rail 132, and are driven by the backflow driving source to move along the base rail 130, so as to drive the stage 210 to move along the conveying direction of the base rail 130, and the movement of the stage 210 is more stable. Wherein, the back flow driving source is a motor, the first clamping wheel 221 is located at the upper side of the base rail 130, the second clamping wheel 222 is located at the lower side of the base rail 130, the wheel surface of the first clamping wheel 221 and the wheel surface of the second clamping wheel 222 are both provided with a first guiding part 223, the upper side and the lower side of the base rail 130 are both provided with a second guiding part 131, and the first guiding part 223 and the second guiding part 131 are mutually embedded to realize guiding. Specifically, the first guide portion 223 is a guide groove, and the second guide portion 131 is a guide protrusion; the first guide portion 223 may be a guide protrusion, and the second guide portion 131 may be a guide groove.

Referring to fig. 4, in some embodiments of the present utility model, the carrier assembly 200 further includes an adjustment belt and two adjustment driving assemblies 230 connected to the stage 210, wherein two ends of the adjustment belt are respectively in transmission connection with the two adjustment driving assemblies 230, and the adjustment belt between the two adjustment driving assemblies 230 is located on the top of the stage 210 and is used for carrying the silicon wafer.

It should be appreciated that the adjusting belt on the table surface of the stage 210 carries the silicon wafer, and the position of the silicon wafer on the adjusting belt can be adjusted by adjusting the rotation directions of the two adjusting driving assemblies 230 located at two ends of the adjusting belt, for example, when the two adjusting driving assemblies 230 rotate clockwise at the same time, the adjusting belt will drive the silicon wafer to move towards one adjusting driving assembly 230; when the two adjusting driving assemblies 230 rotate anticlockwise at the same time, the adjusting belt drives the silicon wafer to move towards the other adjusting driving assembly 230; when the adjustment strap is to be secured, the two adjustment drive assemblies 230 are reversed in the direction of tightening the adjustment strap, or one of the adjustment drive assemblies 230 is secured and the other adjustment drive assembly 230 is reversed in the direction of tightening the adjustment strap. The position of the adjusting belt is adjusted through the adjusting driving assembly 230, and then the position of the silicon wafer on the adjusting belt can be adjusted, so that the silicon wafer moves to the center position of the adjusting belt, and the position of the silicon wafer can be adjusted actively through the adjusting driving assembly 230 after the position of the silicon wafer is detected, so that the silicon wafer adjusting device is more convenient to use. In particular, the conditioning belt is a paper strap.

Referring to fig. 4, in some embodiments of the present utility model, the adjustment driving assembly 230 includes an adjustment driving source 231, an adjustment shaft 232, a magnetic wheel 233, and a clutch 234, the adjustment driving source 231 is connected to the stage 210, the adjustment shaft 232 is rotatably connected to the stage 210, the adjustment shaft 232 is in driving connection with the adjustment driving source 231 through the magnetic wheel 233 and the clutch 234, and the adjustment shaft 232 is connected to one end of an adjustment belt.

Specifically, the adjusting driving source 231 is a motor, the adjusting shaft 232 is a rotating shaft, the adjusting belt is arranged on the adjusting shaft 232 in a coiled manner, and the positions of the adjusting belt are adjusted by coiling and uncoiling the two adjusting shafts 232; the magnetic wheel 233 has no gear friction, does not generate powder with mechanical abrasion, reduces factors influencing the performance of the silicon wafer, and reduces the generation of defective silicon wafer; the clutch 234 is used to control the fixing and moving of the adjustment belt to maintain the tension of the adjustment belt.

In some embodiments of the present utility model, the carrier assembly 200 further includes a vacuum suction member coupled to the stage 210, the stage 210 is provided with a vacuum suction channel communicating the top surface of the stage 210 and the vacuum suction member, and the vacuum suction channel forms a vacuum suction port for sucking the silicon wafer at the top surface.

It is worth understanding that adsorb paper tape and the silicon chip on the paper tape through the vacuum adsorption mouth, fixed effect to the silicon chip is better, and the position of silicon chip is difficult for taking place relative movement after fixed, and the silicon chip is difficult for taking place the skew, has reduced the bad that the skew brought, and then can improve the yields of silicon chip.

Referring to fig. 1 and 5, in some embodiments of the utility model, the recirculation assembly 100 is disposed vertically and the first straight line segment 110 is disposed horizontally above the recirculation segment 120.

It is appreciated that the first straight line segment 110 and the return line segment 120 overlap in the vertical space, so as to fully utilize the vertical space, save the installation space, and improve the space utilization efficiency.

As another embodiment, the first straight line segment 110 and the reflow segment 120 may be disposed side by side in a horizontal plane, and when disposed in a horizontal plane, the second straight line segment may be disposed in the reflow segment 120, and the second straight line segment may also be disposed with a second set of screen printing processing stations, so as to fully utilize the circulation reflow assembly 100, and the circulation reflow assembly 100 has a higher utilization efficiency.

Referring to fig. 5, a second aspect of the present utility model provides a printer, comprising: a wafer feeding and conveying module 2000, a screen printing conveying line 1000, a detection position 3000, a first printing position 4000 and a wafer discharging and conveying module 5000 according to the embodiment of the first aspect of the present utility model, wherein the wafer feeding and conveying module 2000 is used for conveying silicon wafers; the screen printing conveying line 1000 is used for receiving the silicon wafers conveyed by the wafer feeding conveying module 2000; the detection position 3000 and the first printing position 4000 are sequentially arranged along the conveying direction, so that the silicon wafer which is positioned on the first straight line segment 110 and carried by the carried object assembly 200 is sequentially processed along the conveying direction, the detection position 3000 is used for detecting the position of the silicon wafer, and the first printing position 4000 is used for printing the silicon wafer with patterns passing through the detection position 3000; the wafer discharging and conveying module 5000 is used for receiving the silicon wafer printed by the screen printing and conveying line 1000.

It should be appreciated that, by adopting the screen printing conveyor line 1000 according to the first aspect of the present utility model, the conveying efficiency of large-sized silicon wafers can be improved by using the screen printing conveyor line 1000, and thus the overall conveying efficiency can be improved. Specifically, the detection position 3000 is provided with a CCD camera, and the first printing position 4000 is provided with a printing module.

Referring to fig. 1, in some embodiments of the present utility model, the printing apparatus further includes a second printing station 6000, wherein the first printing station 4000 and the second printing station 6000 are sequentially disposed along the conveying direction, and a waiting station 7000 for adjusting the conveying tact is disposed between the first printing station 4000 and the detecting station 3000.

It should be appreciated that the screen printing station includes a detection position 3000, a waiting position 7000, a first printing position 4000 and a second printing position 6000, the detection position 3000 occupies a small space and takes less time, and the printing position 3000 occupies a large space and takes a long time, so that the detection position 3000 corresponds to the first printing position 4000 and the second printing position 6000, and the waiting position 7000 is set to adapt to the conveying beats. Specifically, after the detection position 3000 detects the first silicon wafer, the first silicon wafer moves to the waiting position 7000, the detection position 3000 continues to detect the second silicon wafer, after the detection is completed, the first silicon wafer and the second silicon wafer move to the first printing position 4000 and the second printing position 6000 respectively, printing is performed simultaneously, meanwhile, the detection position 3000 continues to detect, after the detection is completed, the first printing position 4000 and the second printing position 6000 complete printing of the first silicon wafer and the second silicon wafer, and high-efficiency conveying is achieved.

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.

Claims (10)

1. A screen printing transfer line, comprising:

the circulating reflux assembly comprises a first straight line section and reflux sections with two ends respectively connected with the two ends of the first straight line section, and the circulating reflux assembly has a circulating conveying direction;

the carrier assemblies are connected to the circulating reflux assembly and are used for carrying silicon wafers;

the object carrying assembly can move along the conveying direction at the first straight line section and enable the silicon wafer to move to the printing processing station, and the object carrying assembly can move along the backflow section from the tail end of the first straight line section along the conveying direction to the head end of the first straight line section along the conveying direction.

2. Screen printing transfer chain according to claim 1, characterized in that: the circulating reflux assembly is an annular base rail, the object carrying assembly comprises an object carrying table and a reflux driving assembly connected with the object carrying table, and the reflux driving assembly can move relative to the base rail so as to drive the object carrying table to move along the base rail.

3. Screen printing transfer chain according to claim 2, characterized in that: the reflux driving assembly comprises a reflux driving source connected with the object stage and at least one pair of clamping guide wheel sets which are in transmission connection with the reflux driving source, wherein the clamping guide wheel sets are clamped on the base rail and can move along the base rail under the drive of the reflux driving source.

4. A screen printing transfer line as in claim 3 wherein: the clamping guide wheel set comprises a plurality of first clamping wheels and a plurality of second clamping wheels, the first clamping wheels are oppositely arranged with the second clamping wheels and clamped on the base rail and can move along the base rail, at least one of the first clamping wheels and the second clamping wheels is provided with a first guide part, the base rail is provided with a second guide part corresponding to the first guide part, and the first guide part is connected with the second guide part so as to guide the clamping guide wheel set to move along the base rail.

5. Screen printing transfer chain according to claim 2, characterized in that: the object carrying assembly further comprises an adjusting belt and two adjusting driving assemblies connected to the object carrying table, two ends of the adjusting belt are respectively connected with the two adjusting driving assemblies in a transmission mode, and the adjusting belt between the two adjusting driving assemblies is located on the table top of the object carrying table and used for carrying silicon wafers.

6. The screen printing conveyor line according to claim 5, wherein: the adjusting driving assembly comprises an adjusting driving source, an adjusting shaft, a magnetic wheel and a clutch, wherein the adjusting driving source is connected to the objective table, the adjusting shaft is rotationally connected to the objective table, the adjusting shaft is in transmission connection with the adjusting driving source through the magnetic wheel and the clutch, and the adjusting shaft is connected with one end of the adjusting belt.

7. The screen printing conveyor line according to claim 5, wherein: the object carrying assembly further comprises a vacuum adsorption piece connected to the object carrying table, the object carrying table is provided with a vacuum adsorption channel communicated with the table top of the object carrying table and the vacuum adsorption piece, and the vacuum adsorption channel forms a vacuum adsorption port for adsorbing the silicon wafer on the table top.

8. Screen printing transfer chain according to claim 1, characterized in that: the circulating reflux assembly is vertically arranged, and the first straight line section is horizontally arranged above the reflux section.

9. A printing press, comprising:

the wafer feeding and conveying module is used for conveying the silicon wafers;

the screen printing conveyor line according to any one of claims 1 to 8, for receiving the silicon wafer conveyed by the wafer feed conveyor module;

the detection position and the first printing position are sequentially arranged along the conveying direction, so that the silicon wafer which is positioned on the first straight line section and carried by the carrying component is sequentially processed along the conveying direction, the detection position is used for detecting the position of the silicon wafer, and the first printing position is used for printing the silicon wafer with patterns passing through the detection position;

and the wafer discharging and conveying module is used for receiving the silicon wafer printed by the screen printing and conveying line.

10. The printer of claim 9, wherein: the printing device further comprises a second printing position, wherein the first printing position and the second printing position are sequentially arranged along the conveying direction, and a waiting position for adjusting conveying beats is arranged between the first printing position and the detecting position.