CN219525234U

CN219525234U - Screen pad printing plasma cleaning disc passing device

Info

Publication number: CN219525234U
Application number: CN202223232855.6U
Authority: CN
Inventors: 许立峰; 肖锋; 谭轻
Original assignee: Shenzhen Nuofeng Photoelectric Equipment Co Ltd
Current assignee: Shenzhen Nuofeng Photoelectric Equipment Co Ltd
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-08-15
Anticipated expiration: 2032-11-28

Abstract

The utility model discloses a screen pad printing plasma cleaning tray passing device, which comprises a conveying mechanism and a plasma cleaning mechanism, wherein the conveying mechanism is horizontally arranged, the conveying mechanism comprises a cleaning station and a tray placing station which are sequentially arranged, the tray placing station comprises two material channels which are arranged in parallel, and a tray carrying materials is stacked in the material channels; the cleaning station is provided with a traversing assembly which moves back and forth in a straight line between the two material channels so as to receive the material taking disc from the two material channels; the plasma cleaning mechanism is arranged above the cleaning station, and the material tray discharged from the material channel enters the cleaning station and is subjected to plasma cleaning. The automatic disc stacking and feeding device has the advantages that the double-channel automatic disc stacking and feeding device is provided, the feeding capacity is effectively improved, the disc changing time is reduced, the automatic disc stacking and discharging is realized through the lifting chuck, the disc discharging efficiency is effectively improved, and the disc receiving efficiency is improved while the automatic surface cleaning is realized.

Description

Screen pad printing plasma cleaning disc passing device

Technical Field

The utility model relates to the field of screen manufacturing, in particular to a screen pad printing plasma cleaning tray passing device for automatic screen feeding and surface cleaning.

Background

The screen is a common optical component, is widely applied to various electronic products, such as common smart phones, smart watches, tablet computers, computer display screens, television screens and the like, and with the continuous increase of market demands of the electronic products, the global market of screen manufacturing is rapidly expanded, domestic manufacturers are always influenced by 'lack of cores and lack of screens' for many years, and with the importance of national multi-screen manufacturing and the adjustment of related industrial policies, the problem of screen manufacturing is gradually improved, and at present, the domestic is an important screen manufacturing base.

The screen production and assembly are required to be solved at present, and the conventional manual production is replaced by an automatic production line, so that the screen production and assembly are trends of future development. In the screen manufacturing process, surface finishing is an important process, such as screen surface pad printing, screen printing and the like, so as to realize printing of a required pattern on the screen surface. When the screen surface processing technology is carried out, the following technical problems need to be solved: 1. screen surface printing needs to ensure the surface cleanliness of the substrate screen surface, so that the problem of automatic cleaning of the screen surface before printing needs to be solved; 2. in the automatic production process of the screen, in order to ensure continuous work of an automatic production line, continuous feeding of the screen is required, a common condition is that a plurality of screens are carried by a material tray as a screen carrying component, and then the material tray is moved to realize the movement of the plurality of materials, so that the problem of large-capacity storage of the material tray is required to be solved in the feeding process of the material tray, and meanwhile, the problem of automatic discharging and feeding of the storage material tray is also required to be solved.

Disclosure of Invention

The utility model aims to solve the technical problems of the prior art, and provides the screen pad printing plasma cleaning tray passing device which has the advantages of double-channel automatic tray stacking feeding, effective improvement of feeding capacity, reduction of tray changing time, automatic tray stacking discharging realized by lifting a chuck, effective improvement of tray discharging efficiency, automatic tray receiving cleaning, automatic surface cleaning and tray receiving efficiency improvement.

The technical scheme adopted by the utility model is as follows: the screen pad printing plasma cleaning tray passing device comprises a conveying mechanism and a plasma cleaning mechanism, wherein the conveying mechanism is horizontally arranged, the conveying mechanism comprises a cleaning station and a tray placing station which are sequentially arranged, the tray placing station comprises two material channels which are arranged in parallel, and a tray for bearing materials is stacked in the material channels; the cleaning station is provided with a traversing assembly which moves back and forth in a straight line between the two material channels so as to receive the material taking disc from the two material channels; the plasma cleaning mechanism is arranged above the cleaning station, and the material tray discharged from the material channel enters the cleaning station and is subjected to plasma cleaning.

Preferably, the conveying mechanism comprises a conveying support and a conveying assembly, wherein the conveying support is horizontally arranged, the conveying support comprises at least two conveying supports, and each conveying support is horizontally arranged at intervals.

Preferably, the conveying assembly is arranged on the conveying support, and comprises a conveying belt, a conveying motor and a transmission shaft, wherein the conveying belt comprises at least two conveying belts, the conveying belts are arranged in gaps between two adjacent conveying support, extend to the upper part of the conveying support and are tensioned by rollers connected to the conveying support; the transmission shaft is arranged at one side of the transmission support and is connected with a roller at one side of the transmission support; the conveying motor is arranged at the lower part of one side of the conveying support and is connected with the transmission shaft through the transmission belt, the transmission motor drives the transmission shaft to rotate, the transmission shaft drives the rollers connected to the transmission shaft to synchronously rotate, and the rollers drive the transmission belt to move on the surface of the conveying support so as to convey the material tray forwards.

Preferably, the conveying mechanism further comprises a limiting assembly and a positioning assembly, wherein the limiting assembly comprises limiting plates, each limiting plate comprises at least two limiting plates, each limiting plate is arranged on the outer side of a material channel of the tray placing station and extends vertically upwards, and a tray storage space is formed between the limiting plates; the positioning assembly is arranged at the end part of the material channel and comprises a positioning cylinder and a positioning rod, wherein the positioning cylinder is vertically arranged below the conveying support, and the output end of the positioning cylinder is upwards arranged; the positioning rod is connected to the output end of the positioning cylinder and upwards penetrates through the conveying support, and the positioning cylinder drives the positioning rod to move up and down so as to block the positioning tray from the end part of the material channel.

Preferably, the transverse moving assembly comprises a transverse moving sliding rail, a transverse moving motor, a transverse moving screw rod and a transverse moving sliding seat, wherein the transverse moving sliding rail is horizontally arranged at the cleaning station and is perpendicular to the transmission shaft; the transverse sliding seat is slidably connected to the transverse sliding rail; the transverse moving motor is arranged on one side of the transverse moving sliding rail, and the output end of the transverse moving motor extends along the direction of the transverse moving sliding rail; the transverse moving screw rod is connected to the output end of the transverse moving motor and is in threaded connection with the bottom of the transverse moving slide seat, and when the transverse moving motor drives the transverse moving screw rod to rotate, the transverse moving screw rod drives the transverse moving slide seat to linearly move back and forth; the transverse sliding seat is provided with the conveying support and the conveying component, and the transverse sliding seat drives the conveying support and the conveying component to linearly move back and forth at the outlets of the two material channels so as to receive the material trays discharged from the material channels.

Preferably, the plasma cleaning mechanism comprises a cleaning linear module, a cleaning sliding seat and a plasma cleaner, wherein the cleaning linear module is arranged above a cleaning station and extends along the direction of the transverse sliding rail; the cleaning sliding seat is slidably connected to the cleaning linear module and is connected with the output end of the cleaning linear module; the plasma cleaner is arranged on the cleaning sliding seat, and the cleaning head is arranged downwards; and the transverse moving assembly at the cleaning station drives the conveying support to connect the material taking disc from the material channel, and then the material in the material taking disc is cleaned by the plasma cleaner.

The utility model has the beneficial effects that:

the utility model designs a screen pad printing plasma cleaning disc passing device with double-channel automatic disc stacking feeding, effectively improves feeding capacity, reduces disc changing time, realizes automatic disc stacking discharging by lifting a chuck, effectively improves disc discharging efficiency, has automatic disc receiving cleaning, realizes automatic surface cleaning, and improves disc receiving efficiency. The utility model is independently researched and developed according to the process requirements of an automatic production line and the process requirements of cleaning the surface of a screen, and the whole device comprises a conveying mechanism and a plasma cleaning mechanism. The plasma cleaning mechanism is arranged above the cleaning station and linearly traverses back and forth so as to clean the surfaces of the materials in the fetched material tray by plasma. The tray placing mechanism is arranged below the two material channels and used for bearing a plurality of trays which are stacked up and down from the lower side, and simultaneously, automatically placing the tray at the lowest layer in the material channels, and the discharged tray outwards slides to the cleaning station along the material channels.

The conveying mechanism of the utility model takes a conveying support platform which is horizontally arranged as a bearing part, a plurality of conveying belts are tensioned in the clearance space between two adjacent conveying support platforms through rollers, the upper part of the conveying belt is higher than the conveying support platform, meanwhile, a transmission shaft at one side of the conveying support platform is driven by a conveying motor to drive the rollers arranged on the conveying support platform to rotate, the rollers drive the conveying belt to move on the surface of the conveying support platform, and when a material tray is placed on the conveying support platform, the bottom of the material tray firstly presses the conveying belt and is conveyed forward along with the movement of the conveying belt. In particular, aiming at different process requirements of the material channel and the cleaning station, the material channel and the cleaning station take a conveying support as a bearing structure, and a conveying assembly is arranged on the conveying support for automatic conveying of the material tray; the utility model is characterized in that the side parts of the conveying support tables at the two material channels are provided with limiting plates extending upwards, and a plurality of limiting plates linearly form a limiting space so as to limit the trays stacked in the material channels from the side parts; and meanwhile, a positioning assembly is further arranged at the end part of the material channel, a positioning cylinder of the positioning assembly is vertically arranged at the lower part of the conveying support, a positioning rod connected with the output end of the positioning cylinder penetrates through the conveying support to vertically extend, and the positioning cylinder drives the positioning rod to move up and down so as to block a material tray in the limiting material channel from the end part. And for cleaning the station, because for single channel structure, in order to guarantee that the charging tray in two material passageways gets into cleaning the station smoothly, consequently increased sideslip subassembly, the conveying brace and the conveying subassembly that sets up on it wholly set up on the output of sideslip subassembly, the conveying brace is through sideslip subassembly drive back and forth rectilinear motion between the discharge end of two material passageways, after the charging tray in a material passageway is released, sideslip subassembly drive conveying brace removes to this material passageway discharge end, the charging tray is through the conveying belt drive in the material passageway and rectilinear motion to the conveying brace of cleaning station department, and can be through the conveying subassembly forward drive on the conveying brace of cleaning station department. According to the utility model, through a double-channel stacked structure and adopting a mode of stacking the trays up and down, the number of the feeding channels is increased, meanwhile, batch automatic supply of stacking of the trays is realized, the feeding capacity is effectively improved, the standby time of material replacement is reduced, and the whole line productivity is improved. In order to ensure that the trays stacked up and down in the material channel are automatically discharged to a cleaning station for surface cleaning in a single-tray mode, a tray discharging mechanism is arranged below the material channel and integrally comprises two motion paths in the direction of freedom degrees, namely, lifting motion in the vertical direction and linear motion in the horizontal direction, wherein the linear motion in the horizontal direction comprises two groups of execution parts, and the two groups of execution parts are synchronously linked in opposite directions from the left side and the right side, namely, synchronously clamp or unclamp the trays. The lifting motion in the vertical direction is realized by driving the tray top seat to lift along the guide post through a lifting cylinder of the lifting assembly; and the chuck cylinder arranged at the bottom of the top seat of the tray is used as a power output structure. The utility model is characterized in that the utility model realizes the reverse synchronous linkage of the chuck sliding seat arranged on the left side and the right side of the top seat of the disc by taking only one chuck cylinder as a power output part. Specifically, the chuck sliding seat is slidably arranged on chuck sliding rails arranged on the left side and the right side of the top seat of the tray, two chuck support plates are arranged on the chuck sliding seat at intervals front and back, and chuck blocks are arranged on the inner sides of the chuck support plates; two tensioning wheels are arranged on the top seat of the tray at intervals along the left-right direction, a chuck driving belt is tensioned between the two tensioning wheels, and two chuck sliding seats are fixedly connected with the front side and the rear side of the chuck driving belt through connecting blocks respectively; through the chuck driving belt as the motion connecting member, when one chuck sliding seat moves, the other chuck sliding seat is synchronously and reversely linked through the chuck driving belt. Meanwhile, the output shaft of the chuck cylinder is fixedly connected with one chuck slide seat through a connecting plate penetrating through the top seat of the tray upwards, in the mode, the power of the chuck cylinder is only output to one chuck slide seat through the connecting plate, the chuck slide seat is driven to linearly move, meanwhile, the chuck driving belt is driven to move through the connecting block, the other chuck slide seat is driven to synchronously move when the chuck driving belt moves, and the two chuck slide seats are respectively fixedly connected with the front side and the rear side of the chuck driving belt, so that the two chuck slide seats are synchronously and reversely linked. This structural approach is effectively applicable to chuck and racking process requirements. In a natural state, the chuck cylinder drives the two chuck sliding seats to move inwards, the chuck blocks clamp the lowest-layer material trays in the upper and lower stacking material trays from the left side and the right side, all the material trays are supported and supported, when a material channel needs to discharge one material tray, the jacking cylinder drives the tray discharging top seat to descend, the lowest-layer material tray is placed on the conveying support, the chuck cylinder drives the two chuck sliding seats to move outwards, after the left and right chuck blocks loosen the material tray, the jacking cylinder drives the tray discharging top seat to ascend by one tray height again, so that after the chuck blocks ascend to the left and the right sides of the last second material tray, the chuck cylinder drives the two chuck blocks to clamp all the material trays on the last second material tray, and the lowest-layer material tray is outwards transmitted through the conveying belt on the conveying support. According to the utility model, through the original design of the tray discharging mechanism, automatic discharging of the upper and lower stacking trays is realized, meanwhile, a chuck cylinder is used as a power mechanism, and the chuck and tray discharging synchronization is well ensured while the production cost is reduced by utilizing the principle of reverse linkage of the front and back movement of the chuck driving belt, so that the left and right sides are automatically reversely linked.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

FIG. 2 is a schematic diagram of a second perspective structure of the present utility model.

FIG. 3 is a third perspective view of the present utility model.

FIG. 4 is a schematic perspective view of the present utility model.

FIG. 5 is a schematic diagram of an assembly structure of the transfer mechanism and the tray discharging mechanism of the present utility model.

FIG. 6 is a second schematic diagram of the assembly structure of the transfer mechanism and the tray discharging mechanism of the present utility model.

FIG. 7 is a third schematic diagram of the assembly structure of the transfer mechanism and the tray discharging mechanism of the present utility model.

FIG. 8 is a schematic perspective view of the tray deck according to the present utility model.

FIG. 9 is a schematic diagram showing a second perspective structure of the tray discharging mechanism of the present utility model.

FIG. 10 is a third perspective view of the tray deck according to the present utility model.

Detailed Description

The utility model will be further described with reference to the accompanying drawings in which:

as shown in fig. 1 to 7, the technical scheme adopted by the utility model is as follows: the screen pad printing plasma cleaning tray passing device comprises a conveying mechanism 2 and a plasma cleaning mechanism 4, wherein the conveying mechanism 2 is horizontally arranged, the conveying mechanism 2 comprises a cleaning station and a tray placing station which are sequentially arranged, the tray placing station comprises two material channels which are arranged in parallel, and a tray 0 for bearing materials is stacked in the material channels; the cleaning station is provided with a traversing assembly which moves back and forth in a straight line between the two material channels so as to receive the material taking disc from the two material channels; the plasma cleaning mechanism 4 is arranged above the cleaning station, and a tray discharged from the material channel enters the cleaning station and is subjected to plasma cleaning by the plasma cleaning mechanism 4.

The conveying mechanism 2 comprises a conveying support 21 and conveying components, wherein the conveying support 21 is horizontally arranged, the conveying support 21 comprises at least two conveying supports 21, and each conveying support 21 is horizontally arranged at intervals.

The conveying assembly is arranged on the conveying support 21 and comprises at least two conveying belts 23, a conveying motor 25 and a transmission shaft 26, wherein the conveying belts 23 are arranged in a gap between two adjacent conveying support 21 and extend to the upper part of the conveying support 21, and are tensioned by rollers connected to the conveying support 21; the transmission shaft 26 is arranged at one side of the conveying support 21 and is connected with a roller at one side of the conveying support 21; the above-mentioned conveying motor 25 is set up in the lower part of one side of conveying supporting table 21, and is connected with transmission shaft 26 through the drive belt, the conveying motor 25 drives the rotation motion of transmission shaft 26, the transmission shaft 26 drives the gyro wheel synchronous rotation motion connected thereto, the gyro wheel drives the conveying belt 23 to move on conveying supporting table 21 surface, in order to convey the charging tray 0 forward.

The conveying mechanism 2 further comprises a limiting assembly and a positioning assembly, wherein the limiting assembly comprises limiting plates 22, each limiting plate 22 comprises at least two limiting plates, each limiting plate 22 is arranged on the outer side of a material channel of the tray placing station and extends vertically upwards, and a tray storage space is formed between the limiting plates 22; the positioning assembly is arranged at the end part of the material channel and comprises a positioning cylinder 27 and a positioning rod 24, wherein the positioning cylinder 27 is vertically arranged below the conveying support 21, and the output end of the positioning cylinder is upwards arranged; the positioning rod 24 is connected to the output end of the positioning cylinder 27 and passes upward through the conveying support 21, and the positioning cylinder 27 drives the positioning rod 24 to move up and down so as to block the positioning tray 0 from the end of the material passage.

The transverse moving assembly comprises a transverse moving sliding rail, a transverse moving motor, a transverse moving screw rod and a transverse moving sliding seat, wherein the transverse moving sliding rail is horizontally arranged at the cleaning station and is perpendicular to the transmission shaft 26; the transverse sliding seat is slidably connected to the transverse sliding rail; the transverse moving motor is arranged on one side of the transverse moving sliding rail, and the output end of the transverse moving motor extends along the direction of the transverse moving sliding rail; the transverse moving screw rod is connected to the output end of the transverse moving motor and is in threaded connection with the bottom of the transverse moving slide seat, and when the transverse moving motor drives the transverse moving screw rod to rotate, the transverse moving screw rod drives the transverse moving slide seat to linearly move back and forth; the transverse sliding seat is provided with a conveying support table 21 and a conveying component, and the transverse sliding seat drives the conveying support table 21 and the conveying component to linearly move back and forth at the outlets of the two material channels so as to receive a material tray discharged from the material channels.

The plasma cleaning mechanism 4 comprises a cleaning linear module 41, a cleaning sliding seat 42 and a plasma cleaner 43, wherein the cleaning linear module 41 is arranged above a cleaning station and extends along the direction of a transverse sliding rail; the cleaning slide carriage 42 is slidably connected to the cleaning linear module 41 and is connected to an output end of the cleaning linear module 41; the plasma cleaner 43 is arranged on the cleaning slide seat (42), and the cleaning head is arranged downwards; after the transverse moving assembly at the cleaning station drives the conveying support 21 to connect the material taking tray from the material channel, the material in the material taking tray is cleaned by the plasma cleaner 43

As shown in fig. 8 to 10, which are schematic views of a disc discharging mechanism 3 according to the present utility model, the disc discharging mechanism 3 includes a disc discharging support 31, a disc discharging top seat 33, a jacking assembly and a chuck assembly, wherein the disc discharging support 31 is horizontally disposed below the conveying support 21; the jacking component is connected to the tray support 31, and the output end of the jacking component is upwards arranged; the tray top seat 33 is horizontally arranged above the tray support 31 and connected with the output end of the jacking component, and the jacking component drives the tray top seat 33 to move up and down; the chuck assembly includes two groups, which are respectively disposed at both sides of the tray top seat 33 and extend upward through the transfer support 21, and clamps or unclamps the tray 0 from both sides of the tray top seat 33 so as to place the tray 0 of the lowermost layer on the transfer support 21. The jacking component comprises a jacking cylinder 32 and a guide column 34, wherein the jacking cylinder 32 is arranged on the tray support 31, and the output end of the jacking cylinder is upwards arranged; the two guide posts 34 are vertically arranged on the tray support 31 respectively, vertically extend upwards to pass through the tray top seat 33 and are slidably connected with the tray top seat 33; the output end of the jacking cylinder 32 is connected to the bottom of the tray top seat 33; the jacking cylinder 32 drives the tray jack 33 to move up and down along the guide post 34. The chuck assembly comprises a chuck slide rail 35, a chuck slide seat 36, a chuck support plate 37, a chuck block 38, a chuck driving belt 39, a connecting block 310, a chuck cylinder 311 and a connecting plate 312, wherein the chuck slide rail 35 comprises two groups which are respectively arranged at the left side and the right side of the top tray 35; the chuck slide 36 is slidably connected to the chuck slide 35; the chuck support plate 37 comprises two chuck support plates, wherein the chuck support plates 37 are arranged on the chuck sliding seat 36 at intervals and vertically extend upwards through the conveying platform 21; the chuck block 38 is provided on a top side wall of the chuck support plate 37, and the chuck block 38 extends horizontally inward. The chuck driving belt 39 is arranged on the top tray placing seat 33 along the direction of the chuck sliding rail 35 and is tensioned by a tensioning roller which is slidably arranged on the top tray placing seat 33; the two connecting blocks 310 include two connecting blocks, one side of each connecting block 310 is respectively connected with the chuck sliding seat 36 on the left side and the right side, and the other side of each connecting block 310 is respectively fixed on two sides of the chuck driving belt 39; the chuck cylinder 311 is disposed at the bottom of the top tray seat 33, and the output end is disposed toward the chuck slide rail 35; one end of the connecting plate 312 is connected to the output end of the chuck cylinder 311, and the other end extends upward through the top tray seat 33 and is connected to one chuck slide 36, and when the chuck cylinder 311 drives the chuck slide 36 to slide linearly toward one side through the connecting plate 312, the chuck slide 36 drives the other chuck slide 36 to move in the opposite direction through the connecting block 310 and the chuck driving belt 39.

Furthermore, the utility model designs the screen pad printing plasma cleaning tray passing device which has the advantages of double-channel automatic tray stacking feeding, effective improvement of feeding capacity, reduction of tray changing time, automatic tray stacking discharging realized by lifting the chuck, effective improvement of tray discharging efficiency, automatic tray receiving cleaning, realization of automatic surface cleaning and improvement of tray receiving efficiency. The utility model is independently researched and developed according to the process requirements of an automatic production line and the process requirements of cleaning the surface of a screen, and the whole device comprises a conveying mechanism and a plasma cleaning mechanism. The plasma cleaning mechanism is arranged above the cleaning station and linearly traverses back and forth so as to clean the surfaces of the materials in the fetched material tray by plasma. The tray placing mechanism is arranged below the two material channels and used for bearing a plurality of trays which are stacked up and down from the lower side, and simultaneously, automatically placing the tray at the lowest layer in the material channels, and the discharged tray outwards slides to the cleaning station along the material channels.

The examples of the present utility model are presented only to describe specific embodiments thereof and are not intended to limit the scope of the utility model. Certain modifications may be made by those skilled in the art in light of the teachings of this embodiment, and all equivalent changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. The utility model provides a screen pad printing plasma washs and crosses a set device which characterized in that: the device comprises a conveying mechanism (2) and a plasma cleaning mechanism (4), wherein the conveying mechanism (2) is horizontally arranged, the conveying mechanism (2) comprises a cleaning station and a tray placing station which are sequentially arranged, the tray placing station comprises two material channels which are arranged in parallel, and a material tray (0) for bearing materials is stacked in the material channels; the cleaning station is provided with a traversing assembly which moves back and forth in a straight line between the two material channels so as to receive the material taking disc from the two material channels; the plasma cleaning mechanism (4) is arranged above the cleaning station, and a tray discharged from the material channel enters the cleaning station and is subjected to plasma cleaning through the plasma cleaning mechanism (4).

2. A screen pad printing plasma cleaning tray device as claimed in claim 1, wherein: the conveying mechanism (2) comprises a conveying support (21) and a conveying assembly, wherein the conveying support (21) is horizontally arranged, the conveying support (21) comprises at least two conveying support (21) and each conveying support (21) is horizontally arranged at intervals.

3. A screen pad printing plasma cleaning tray device as claimed in claim 2, wherein: the conveying assembly is arranged on the conveying support (21), and comprises a conveying belt (23), a conveying motor (25) and a transmission shaft (26), wherein the conveying belt (23) comprises at least two conveying belts, the conveying belt (23) is arranged in a gap between two adjacent conveying support (21) and extends to the upper part of the conveying support (21) to be tensioned by rollers connected to the conveying support (21); the transmission shaft (26) is arranged on one side of the conveying support (21) and is connected with a roller on one side of the conveying support (21); the conveying motor (25) is arranged at the lower part of one side of the conveying support (21) and is connected with the transmission shaft (26) through a transmission belt, the transmission motor (25) drives the transmission shaft (26) to rotate, the transmission shaft (26) drives the rollers connected to the transmission motor to synchronously rotate, and the rollers drive the conveying belt (23) to move on the surface of the conveying support (21) so as to convey the material tray (0) forwards.

4. A screen pad printing plasma cleaning tray device according to claim 3, wherein: the conveying mechanism (2) further comprises a limiting assembly and a positioning assembly, wherein the limiting assembly comprises limiting plates (22), each limiting plate (22) comprises at least two limiting plates, each limiting plate (22) is arranged on the outer side of a material channel of the tray placing station and extends vertically upwards, and a tray storage space is formed between the limiting plates (22); the positioning assembly is arranged at the end part of the material channel and comprises a positioning cylinder (27) and a positioning rod (24), wherein the positioning cylinder (27) is vertically arranged below the conveying support (21), and the output end of the positioning cylinder is upwards arranged; the positioning rod (24) is connected to the output end of the positioning cylinder (27) and passes through the conveying support (21) upwards, and the positioning cylinder (27) drives the positioning rod (24) to move up and down so as to block the positioning material tray (0) from the end part of the material channel.

5. The screen pad printing plasma cleaning tray device of claim 4, wherein: the transverse moving assembly comprises a transverse moving sliding rail, a transverse moving motor, a transverse moving screw rod and a transverse moving sliding seat, wherein the transverse moving sliding rail is horizontally arranged at a cleaning station and is perpendicular to a transmission shaft (26); the transverse sliding seat is slidably connected to the transverse sliding rail; the transverse moving motor is arranged on one side of the transverse moving sliding rail, and the output end of the transverse moving motor extends along the direction of the transverse moving sliding rail; the transverse moving screw rod is connected to the output end of the transverse moving motor and is in threaded connection with the bottom of the transverse moving slide seat, and when the transverse moving motor drives the transverse moving screw rod to rotate, the transverse moving screw rod drives the transverse moving slide seat to linearly move back and forth; the transverse sliding seat is provided with a conveying supporting table (21) and a conveying component, and the transverse sliding seat drives the conveying supporting table (21) and the conveying component to linearly move back and forth at the outlets of the two material channels so as to receive a material tray discharged from the material channels.

6. The screen pad printing plasma cleaning tray device of claim 5, wherein: the plasma cleaning mechanism (4) comprises a cleaning linear module (41), a cleaning sliding seat (42) and a plasma cleaner (43), wherein the cleaning linear module (41) is erected above a cleaning station and extends along the direction of a transverse sliding rail; the cleaning sliding seat (42) is slidably connected to the cleaning linear module (41) and is connected with the output end of the cleaning linear module (41); the plasma cleaner (43) is arranged on the cleaning sliding seat (42), and the cleaning head is arranged downwards; the transverse moving assembly at the cleaning station drives the conveying support (21) to connect the material taking disc from the material channel, and then the material in the material taking disc is cleaned by the plasma cleaner (43).