CN110202920B

CN110202920B - Automatic screen printing machine for glass

Info

Publication number: CN110202920B
Application number: CN201910447358.1A
Authority: CN
Inventors: 苏碧华; 谢鹏义; 谢鹏艺; 谢继阳
Original assignee: Shenzhen Helitai Intelligent Manufacturing Co ltd
Current assignee: Shenzhen Helitai Intelligent Technology Co ltd
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2023-06-13
Anticipated expiration: 2039-05-27
Also published as: CN110202920A

Abstract

The invention discloses an automatic glass screen printing machine, which comprises a transfer manipulator, a transfer platform, a cleaning device and a screen printing device, wherein the transfer platform comprises a rotary table and a rotary motor, a plurality of transfer stations are arranged on a bearing surface of the rotary table, a first material taking opening which corresponds to each transfer station and extends to a glass placing area of the transfer station is arranged on the peripheral side of the rotary table, and a first vacuum adsorption part is arranged on the transfer station; the screen printing device comprises a printing plate and a printing assembly, wherein the printing plate is provided with a printing station and a second vacuum adsorption part, and the periphery of the printing plate is provided with a second material taking opening which corresponds to the printing station and extends to a glass placing area of the printing station; the cleaning device is used for cleaning the glass on the transferring station; the transfer robot is used for conveying glass between the transfer station and the printing station. The invention is beneficial to preventing the damage of the not-completely solidified pattern on the glass when the glass is transported, thereby being beneficial to improving the qualification rate of products.

Description

Automatic screen printing machine for glass

Technical Field

The invention relates to the field of glass screen printing, in particular to an automatic glass screen printing machine.

Background

With the progress of industrial level and the improvement of living standard of people, glass is increasingly used in life, and various patterns are usually printed on the surface of glass in order to increase the aesthetic property of glass products.

The existing method for printing patterns on glass is to print the glass by a screen printing machine, and the existing screen printing machine generally comprises a conveying device, a cleaning device and a screen printing device, and the glass is transported between the cleaning device and the screen printing device by the conveying device. The mode of silk screen printing is generally to directly adsorb a printing surface of glass by using a suction nozzle on a manipulator after printing patterns on the glass, so as to transport the glass. However, such transportation may cause the suction nozzle on the robot to break the pattern on the glass that is not completely cured, resulting in a high yield of the product.

Disclosure of Invention

The invention mainly aims to provide an automatic glass screen printing machine, which aims to solve the technical problem that a screen printing pattern which is not solidified completely is damaged due to the fact that a conventional manipulator is adopted to convey glass in the glass screen printing process.

In order to solve the technical problems, the invention provides an automatic glass screen printing machine, which comprises a transfer manipulator, a transfer platform, a cleaning device and a screen printing device, wherein the transfer platform comprises a turntable and a rotating motor for driving the turntable to rotate, a plurality of transfer stations for placing glass are arranged on a bearing surface of the turntable, a first material taking opening which corresponds to each transfer station and extends to a glass placing area of the transfer station is arranged on the peripheral side of the turntable, and a first vacuum adsorption part for fixing glass is arranged on the transfer station; the screen printing device comprises a printing plate and a printing assembly positioned above the printing plate, wherein a printing station for placing glass and a second vacuum adsorption part for fixing the glass on the printing station are arranged on the printing plate, and a second material taking opening which corresponds to the printing station and extends to a glass placing area of the printing station is arranged on the peripheral side of the printing plate; the cleaning device is used for cleaning the glass on the transferring station; the transfer robot is used for conveying glass between the transfer station and the printing station.

Preferably, the automatic glass silk screen printing machine further comprises a feeding mechanical arm and a discharging mechanical arm which are positioned on the circumference of the turntable, the feeding mechanical arm comprises a cross beam, a sliding seat which is arranged on the cross beam in a sliding mode, and a feeding adsorption part and a discharging adsorption part which are arranged on the sliding seat through driving components, wherein the feeding adsorption part can move in the vertical direction under the driving of the corresponding driving components, the discharging adsorption part can move in the horizontal direction under the driving of the corresponding driving components, and the vacuum suction port of the discharging adsorption part is arranged upwards.

Preferably, the automatic glass screen printing machine further comprises a conveying device and a first lifting mechanism positioned below the conveying device, wherein the conveying device comprises two mounting frames and two conveying belts, the two mounting frames are arranged in parallel, and the two conveying belts are arranged on the mounting frames in a one-to-one correspondence manner; the first lifting mechanism comprises a first lifting rod capable of moving along the vertical direction and a third vacuum adsorption part arranged on the end part of the first lifting rod, and the first lifting rod is positioned between the two mounting frames.

Preferably, the automatic glass silk screen printing machine further comprises a second lifting mechanism located below the turntable, the second lifting mechanism comprises a second lifting rod capable of moving in the vertical direction and penetrating through the second material taking opening, and a fourth vacuum adsorption part arranged on the end part of the second lifting rod, and the blanking adsorption part can move to the position below the fourth vacuum adsorption part to adsorb glass.

Preferably, the cleaning device comprises a first cleaning component and a second cleaning component, wherein the first cleaning component is positioned above the turntable, the second cleaning component is positioned on one side of the turntable, the first cleaning component comprises a first bracket which is spanned above the turntable, the first bracket comprises a horizontal guide rail, and a vertical guide rail which can move along the horizontal guide rail and a roller which can move along the vertical guide rail are arranged on the horizontal guide rail and is used for cleaning glass; the second cleaning assembly comprises a driving shaft and a driven shaft which are oppositely arranged, one end of an adhesive tape used for adhering attachments on the surface of the roller is wound on the driving shaft, the other end of the adhesive tape is wound on the driven shaft, the second cleaning assembly further comprises a second support and a transverse plate positioned on the second support, the driven shaft is arranged at one end of the transverse plate, a strip-shaped groove is formed in the position, close to the other end of the transverse plate, and the adhesive tape penetrates through the strip-shaped groove to cover the surface of the transverse plate.

Preferably, the second material taking opening penetrates through the rotary disc; the transfer manipulator comprises a rotating mechanism, a rotating arm, a fifth vacuum adsorption part and a rotating arm lifting mechanism, wherein the rotating arm is arranged on an output shaft of the rotating mechanism and is respectively in butt joint with the turntable and the printing plate, the fifth vacuum adsorption part is arranged at two ends of the rotating arm, the rotating arm lifting mechanism is used for driving the rotating arm to lift, a vacuum suction port of the fifth vacuum adsorption part is upwards arranged, and the rotating arm can be respectively accommodated in the first material taking port and the second material taking port.

Preferably, the transfer platform further comprises a first positioning device located below the turntable, the first positioning device comprises a first clamping piece, a first driving mechanism and a second driving mechanism, the plurality of clamping pieces can move towards the transfer station corresponding to the position of the first positioning device under the driving of the first driving mechanism, and the plurality of clamping pieces can draw close towards the center of the transfer station under the driving of the second driving mechanism so as to clamp glass located on the transfer station.

Preferably, the number of the first clamping pieces is at least four, the transferring station is a rectangular area defined on the turntable, first strip-shaped holes consistent with the number of the first clamping pieces are formed in the circumferential direction of the transferring station, at least one first strip-shaped hole is formed in each of the peripheral sides of the transferring station, and the extending direction of the first strip-shaped holes is perpendicular to the side of the transferring station.

Preferably, the screen printing device further comprises a second positioning device located below the printing plate, the second positioning device comprises a second clamping piece, a third driving mechanism and a fourth driving mechanism, a plurality of second clamping pieces can move towards the printing station under the driving of the third driving mechanism, and a plurality of second clamping pieces can draw close towards the center of the printing station under the driving of the fourth driving mechanism so as to clamp glass located on the printing station.

The invention also provides an automatic glass screen printing machine, which comprises a transfer manipulator, a transfer platform, a cleaning device and a screen printing device, wherein the transfer platform comprises a turntable, a rotating motor for driving the turntable to rotate and a third lifting mechanism which is positioned below the turntable and is close to the screen printing device, a plurality of transfer stations for placing glass are arranged on a bearing surface of the turntable, a first vacuum adsorption part for fixing the glass and a first lifting through hole penetrating through the turntable are arranged on the transfer stations, and the third lifting mechanism comprises a third lifting rod which can move towards the direction of the first lifting through hole and penetrates through the first lifting through hole and a sixth vacuum adsorption part arranged on the end part of the third lifting rod; the screen printing device comprises a printing plate, a printing assembly positioned above the printing plate and a second lifting mechanism positioned below the printing plate, wherein a printing station for placing glass, a second vacuum adsorption part for fixing the glass on the printing station and a second lifting through hole penetrating through the turntable are arranged on the printing plate, and the fourth lifting mechanism comprises a fourth lifting rod capable of moving towards the direction of the second lifting through hole and penetrating through the second lifting through hole and a seventh vacuum adsorption part arranged on the end part of the fourth lifting rod; the cleaning device is used for cleaning the glass on the transferring station; the transfer robot is used for conveying glass between the transfer station and the printing station.

According to the automatic glass screen printing machine provided by the embodiment of the invention, the first material taking opening corresponding to each transferring station is arranged on the turntable, the second material taking opening is arranged on the printing plate, meanwhile, the cleaning device is used for cleaning glass in the transferring station, the printing component is used for printing patterns on the glass on the printing plate, and the transferring manipulator is used for extending into the first material taking opening and the second material taking opening and adsorbing the blank surface of the glass. Compared with the prior art, the invention avoids damaging the pattern which is not completely cured on the glass when the glass is transported, thereby improving the qualification rate of the glass.

Drawings

FIG. 1 is a schematic view showing the overall structure of an embodiment of an automatic screen printing machine for glass according to the present invention;

FIG. 2 is a schematic view of the transport platform shown in FIG. 1;

FIG. 3 is a schematic view of the turntable shown in FIG. 2 from a perspective;

fig. 4 is a schematic structural view of the loading and unloading mechanism shown in fig. 1;

FIG. 5 is an enlarged schematic view of the structure shown at A in FIG. 4;

FIG. 6 is a schematic view of the conveyor shown in FIG. 1;

FIG. 7 is a schematic view of the transfer robot shown in FIG. 1;

FIG. 8 is a schematic view of the cleaning apparatus shown in FIG. 1;

FIG. 9 is a schematic view of the screen printing apparatus shown in FIG. 1;

FIG. 10 is a schematic view of a portion of the screen printing apparatus shown in FIG. 9;

fig. 11 is a schematic structural view of the second positioning device shown in fig. 2.

Detailed Description

Embodiments of the present invention 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 are exemplary and intended to illustrate the present invention and should not be construed as limiting the invention, and all other embodiments, based on the embodiments of the present invention, which may be obtained by persons of ordinary skill in the art without making any inventive effort, are intended to be within the scope of the present invention.

The invention provides an automatic glass screen printing machine, which comprises a transfer manipulator 100, a transfer platform 200, a cleaning device 300 and a screen printing device 400, wherein the transfer platform 200 comprises a rotary table 210 and a rotary motor 220 for driving the rotary table 210 to rotate, a plurality of transfer stations 211 for placing glass are arranged on the bearing surface of the rotary table 210, a first material taking opening 212 which corresponds to each transfer station 211 and extends to a glass placing area of the transfer station 211 is arranged on the peripheral side of the rotary table 210, and a first vacuum adsorption part 213 for fixing glass is arranged on the transfer station 211; the screen printing apparatus 400 comprises a printing plate 410 and a printing assembly 420 positioned above the printing plate 410, wherein a printing station 411 for placing glass and a second vacuum suction part 413 for fixing the glass on the printing station 411 are arranged on the printing plate 410, and a second material taking opening 412 which corresponds to the printing station 411 and extends to a glass placing area of the printing station 411 is arranged on the periphery side of the printing plate 511; the cleaning device 300 is used for cleaning glass on the transferring station 211; the transfer robot 100 is used to transport glass between the transfer tool 211 and the printing station 411.

In this embodiment, as shown in fig. 1 to 3, in order to facilitate the installation of each component, a frame 700 is further provided, preferably, the frame 700 adopts a frame structure, an installation space is provided in the frame 700, an installation plane is provided in the installation space, and each component is disposed on the installation plane and located in the installation space. The transfer platform 200 comprises a turntable 210 and a rotating motor 220, wherein the turntable 210 is preferably a U-disk, the rotating motor 220 is arranged on a frame 700, and an output shaft of the rotating motor 220 is connected with the center of the turntable 210. The turntable 210 is provided with a plurality of transferring stations 211, preferably four transferring stations 211 in this embodiment, which are uniformly arranged around one side of the turntable 210. A first vacuum suction portion 213 is disposed on each transfer station 211, preferably the first vacuum suction portion 213 is an annular groove, and a vent hole penetrating through the turntable 210 is disposed at the bottom of the annular groove. To facilitate securing the glass, the transfer platform 200 also includes a vacuum pump and a gas panel. The vacuum pump is arranged on the frame 700, the air passage board is provided with an air passage, at this time, the air passage is preferably provided with an air outlet passage and four air inlet passages communicated with the air outlet passage, the air passage board is also provided with a switch for respectively controlling the on-off of the four air inlet passages, the air outlet passage is communicated with the vacuum pump, and the four air inlet passages are respectively communicated with the air holes in the four first vacuum adsorption parts 213 in a one-to-one correspondence manner. The vacuum pump and the air circuit board are communicated in a rotary joint mode.

To facilitate cleaning of the glass at the transfer station 211, it is advantageous to improve the quality of the printed pattern on the glass. The cleaning device 300 is disposed on the circumference of the turntable 210, and the cleaning device 300 may be configured to adsorb dust on the glass by using a negative pressure port, remove dust by using static electricity, and remove dust on the glass by using a paste.

As shown in fig. 1, 9 and 10, for convenience of printing glass, a screen printing apparatus 400 is further provided, and the screen printing apparatus 400 includes a printing plate 410 and a printing assembly 420 positioned above the printing plate 410. The printing plate 410 is provided with printing stations 411, and the number of the printing stations 411 can be set according to practical situations, and in this embodiment, one printing station 411 is preferred. The printing plate 410 is provided with a second vacuum suction part 413 at the printing station 411, and the second vacuum suction part 413 may take the form of a vent hole uniformly provided in the printing station 411 and communicating with a vacuum pump. To facilitate the installation of the printing plate 410, the frame 700 is further provided with a mounting seat 710, and the printing plate 410 is disposed on the mounting seat 710. Mount 710 is preferably a frame structure to facilitate the mounting of printed board 410. The printing assembly 420 may be a spray-type printing assembly or a doctor blade printing assembly. The printing assembly 420 includes a screen frame 421, a screen lift mechanism 422, a squeegee drive mechanism 423, and a squeegee lift mechanism 424. The screen lifting mechanism 422 is arranged on the frame 700, the screen frame 421 is connected with the output end of the screen lifting mechanism 422, and the screen frame 421 is provided with a printing screen which is horizontally arranged, so that the screen lifting mechanism 422 is convenient to drive the screen frame 421 to move along the vertical direction and can be arranged on the printing plate 410 in a covering manner, and the screen lifting mechanism 422 is preferably in screw transmission. The squeegee drive mechanism 423 is provided at the output end of the screen elevating mechanism 422, and the squeegee drive mechanism 423 is preferably screw-driven. The scraper lifting mechanism 424 is located above the wire frame 421 and connected to the output end of the scraper driving mechanism 423, so that the scraper lifting mechanism 424 can move in the horizontal direction, and the scraper lifting mechanism 424 is preferably driven by a screw. A hanging plate is arranged at the output end of the scraper lifting mechanism 424, the scraper can be abutted against the printing screen on the screen frame 421, and the scraper can print the glass on the printing station 411 under the drive of the scraper driving mechanism 423.

In order to facilitate transport of the glass on the transfer station 211 and the printing station 411, a transfer robot 100 is also provided. The transfer robot 100 is preferably positioned between the printing plate 410 and the turntable 210 to facilitate transport of the glass. The transfer robot 100 may be in any one of rectangular coordinates, cylindrical coordinates, polar coordinates, and multi-joint type. The manner in which the transfer robot 100 grips the glass may be either a clamping type or a vacuum suction type, and the vacuum suction type is preferable. At this time, the material taking end of the transfer robot 100 may extend into the first material taking opening 212 and the second material taking opening 412, so as to facilitate the adsorption of the blank surface of the glass. The manner in which the transferring robot 100 transfers the glass may be that the transferring robot 100 has a gripping end to transfer the glass on the transferring station 211 to the printing station 411, and after the glass is printed, the transferring robot 100 transfers the finished glass into the transferring station 211; the manner in which the transfer robot 100 transports glass may be such that the transfer robot 100 has two gripper ends, and one gripper end transports glass from the transfer station 211 to the printing station 411 while the other gripper end transports finished glass from the printing station 411 to the transfer station 211.

The specific working principle of the automatic glass screen printing machine in this embodiment is that glass is placed in a transfer station 211 on a turntable 210, the turntable 210 rotates by a proper angle and enables the transfer station 211 to be located at a cleaning device 300, the cleaning device 300 cleans the glass on the transfer station 211, the turntable 210 rotates by a proper angle again after cleaning is completed and enables the transfer station 211 to be located at a printing plate 410, a transfer manipulator 100 grabs the glass into a printing station 411 on the printing plate 410, and after printing of the glass in the printing station 411, the transfer manipulator 100 grabs the back of the finished glass and transports the glass into the transfer station 211.

In this embodiment, by arranging the first material taking opening 212 corresponding to each transferring station 211 on the turntable 210 and arranging the second material taking opening 412 on the printing plate 410, and simultaneously cleaning the glass in the transferring station 211 by using the cleaning device 300 and printing the pattern on the printing plate 410 by using the printing component 420, and using the transferring manipulator 100 to extend into the first material taking opening 212 and the second material taking opening 412 and absorb the blank surface of the glass, the pattern which is not solidified completely on the glass is prevented from being damaged when the glass is transported, so that the qualification rate of the glass is improved.

As shown in fig. 1, 4 and 5, in order to facilitate the placement of glass in the transfer station 211 on the turntable 210 or the removal of finished glass in the transfer station 211, a loading and unloading robot 500 is further provided, and the loading and unloading robot 500 may take any form of rectangular coordinates, cylindrical coordinates, polar coordinates and multi-joint type. The manner of gripping the glass by the loading and unloading manipulator can be any one of a clamping type and a vacuum adsorption type, and the vacuum adsorption type is preferable. The specific loading and unloading manipulator 500 comprises a cross beam 510, a sliding seat 520 which is arranged on the cross beam 510 in a sliding manner and moves along the horizontal direction, a driving assembly 550 which is arranged on the sliding seat 520, a loading adsorption part 530 and a unloading adsorption part 540. The cross beam 510 is disposed on the frame 700, and the length direction of the cross beam 510 is arranged along the horizontal direction, one end of the length direction of the cross beam 510 extends towards the turntable 210, and the other end extends towards the position where the material frame is located. The slide 520 is preferably mounted on the transverse beam 510 by means of a guide and can be displaced in the horizontal direction, preferably in that the slide 520 is driven by means of a spindle drive. The driving assembly 550 is disposed on the sliding seat 520, preferably, the number of the driving assemblies 550 is two, and in order to conveniently drive the feeding adsorption part 530 and the discharging adsorption part 540 to move, the driving assemblies 550 preferably use linear cylinders. The output shaft of one of the driving assemblies 550 is arranged along the vertical direction, and the feeding adsorption part 530 is connected with the output shaft of the driving assembly 550; the output shaft of the other driving assembly 550 is disposed in a horizontal direction, and the discharging adsorbing part 540 is connected with the output shaft of the driving assembly 550. The specific forms of the feeding adsorption part 530 and the discharging adsorption part 540 adopt vacuum nozzles, and the vacuum suction openings of the feeding adsorption part 530 are arranged downward, and the vacuum suction openings of the discharging adsorption part 540 are arranged upward.

As shown in fig. 1 and 6, in order to further facilitate the transportation of the material frame, a conveyor 600 and a first lifting mechanism 630 located below the conveyor 600 are also provided. The conveyor 600 includes a mounting frame 610 and a conveyor belt 620. The mounting frames 610 preferably adopt a rectangular frame structure, the number of the mounting frames 610 is two, and the two mounting frames 610 are arranged in the stand 700 in parallel at a preset distance. Two mounting frames 610 are arranged in one-to-one correspondence with two conveyor belts 620, the driving mode of the conveyor belts 620 is preferably driven in the form of motor rollers, and the conveyor belts 620 are preferably leather conveyor belts. In order to conveniently control the moving position of the material frame, the mounting frames 610 may be further provided with infrared sensors, and the transmitting ends and the receiving ends of the infrared sensors are arranged on the two mounting frames 610 in a one-to-one correspondence manner. When the infrared sensor detects that the material frame moves to the detection position, the conveyor belt 620 stops moving.

As shown in fig. 4 and 5, in order to facilitate the placement of the glass on the discharge adsorbing portion 540 in the material frame, the first lifting mechanism 630 includes a first lifting lever 631 and a third vacuum adsorbing portion 632. The first lifting rod 631 preferably adopts a cylindrical rod body, and the first lifting rod 631 is positioned between the two mounting frames and can move along the vertical direction, so that the third vacuum adsorption part 632 is conveniently driven to pass through a through hole arranged on the material frame to adsorb glass on the discharging adsorption part. The third vacuum suction portion 632 is provided on an end of the first lift lever 631, and the third vacuum suction portion 632 is communicated with a vacuum pump, in which case it is preferable that the third vacuum suction portion 632 is arranged in the form of a suction nozzle. The first lifting rod 211 may be driven by a linear cylinder or a screw assembly, and in this embodiment, a linear cylinder is preferably used, and the linear cylinder may be disposed on the frame 700.

As shown in fig. 2 and 11, in order to facilitate the suction of the finished glass on the transfer station 211 by the discharging suction part 540, a second lifting mechanism 230 is further provided below the turntable 210, and the second lifting mechanism 230 includes a second lifting rod 231 and a fourth vacuum suction part 232. The second lifting lever 231 is preferably a cylindrical lever body, and the second lifting lever 231 is movable in a vertical direction. The fourth vacuum suction part 232 is provided on an end of the second lift lever 231, and the fourth vacuum suction part 232 communicates with a vacuum pump, and it is preferable that the fourth vacuum suction part 232 is disposed in the form of a suction nozzle. The second lifting rod 231 may be driven by a linear cylinder or a screw assembly, and in this embodiment, a linear cylinder is preferably used, and the linear cylinder may be disposed on the frame 700. At this time, the first material taking opening 212 penetrates through two opposite sides of the turntable 210, so that the second lifting rod 231 drives the fourth vacuum adsorption part 232 to pass through the first material taking opening 212 to adsorb glass onto the unloading adsorption part 540.

As shown in fig. 5, of course, in order to facilitate the discharging and adsorbing portion 540 to adsorb the finished glass on the first vacuum adsorbing portion 213, it is preferable that the output shaft of the driving assembly 550 is provided with a receiving plate 551, the receiving plate 551 is a U-shaped block, the closed end of the U-shaped block is connected with the output end of the driving assembly 550, and the number of the discharging and adsorbing portions 540 is multiple and uniformly distributed on two extending arms of the U-shaped block, so that the discharging and adsorbing portion 540 can conveniently adsorb the glass on the third vacuum adsorbing portion 632 and the fourth vacuum adsorbing portion 232.

The working principle of the loading and unloading manipulator 500 is that the conveying device 600 conveys the material frame to move, the driving assembly 550 drives the loading adsorption portion 530 to directly adsorb glass on the material frame to the position of the turntable 210, and the second lifting rod 231 drives the fourth vacuum adsorption portion 232 to move upwards and adsorb finished glass on the transfer station 211 to move upwards, so that the unloading adsorption portion 540 adsorbs a blank surface of the finished glass. Meanwhile, the material glass is placed in the transferring station 211 by the feeding adsorption part 530, then the first lifting rod 631 drives the third vacuum adsorption part 632 to move upwards after the material glass is moved to the upper side of the third vacuum adsorption part 632, and the third vacuum adsorption part 632 can downwards place the finished glass in the material frame after the third vacuum adsorption part 632 adsorbs the finished glass on the material glass in the material glass feeding adsorption part 540.

As shown in fig. 6, to further facilitate transporting the material frames according to the above embodiment, the conveying device 600 further includes a stacker 640, a limiting device 650, and a carrying device 660. The stacking frame 640 is formed by enclosing four limiting plates vertically arranged on two mounting frames 610, and the preferable limiting plates are long-strip-shaped plate bodies with L-shaped cross sections, so that a material frame placing space matched with the material frames is formed, and a plurality of material frames can be horizontally placed in the material frame placing space. To facilitate movement of the material frames within the stillage 640 onto the conveyor belt 620, the stillage 640 has two open ends, one of which is disposed toward the conveyor belt 620 to facilitate movement of the material frames onto the conveyor belt 620 through the open end, and the other of which is preferably disposed opposite the open end to facilitate placement of the material frames into the stillage 640 through the open end. Meanwhile, in order to conveniently limit the material frames in the stillage 640 to be transported onto the conveying belt 620 one by one, the number of the limiting devices 650 is two, and the stillage 640 is arranged oppositely in the circumferential direction. The stop 650 includes a stop post movable toward the material frame in the stillage 640 for lifting the material frame, the stop post being disposed on the mounting frame 610. Preferably, the spacing post is the bar cylinder, and this spacing post is the horizontality and arranges, and the mechanism that drives spacing post and remove can adopt sharp cylinder to be horizontal drive source, and spacing post is connected with the output of this sharp cylinder to utilize the spacing post of sharp cylinder drive grafting in the interval space between two adjacent material frames, with this material frame in the convenience stack frame is placed on the conveyer belt alone in proper order. Of course, the material frame can be provided with corresponding concave holes or protrusions, so that the limit posts can conveniently move into the concave holes or the lower portions of the protrusions on the material frame. The limiting column can also be rotatably arranged on the mounting frame, and is driven to rotate by a motor, so that the limiting column is utilized to limit the movement of the material frame in the stacking frame 640, and the limiting column is preferably a circular arc-shaped block body.

To facilitate stable movement of the material frames in the stillage 640 onto the conveyor belt 620, the handling apparatus 660 includes a carrier plate movable toward the stillage 640 for receiving the material frames in the stillage 640 and handling them onto the conveyor belt 620 and a motor screw mechanism driving the carrier plate to move. The loading plate is located under the lower opening end of the stacking frame 640, preferably adopts a rectangular plate body, and the size of the loading plate is matched with the size of the material frame. The motor screw mechanism is preferably arranged on the frame 700, one end of a screw rod in the motor screw mechanism is connected with the center part of one side of the bearing plate, and the bearing plate is driven to be close to or far from the lower opening end of the stacking frame 640 through the motor screw mechanism. At this time, the two conveying belts 620 are respectively disposed on two sides of the carrying plate, so that the material frame on the carrying plate moves to be attached to the conveying belt, thereby facilitating the stable movement of the material frame onto the conveying belt. In this embodiment, the transporting manner of the material frame is that, when the material frame needs to be transported to the conveyer belt 620, after the carrier plate moves upward and is attached to the bottom of the lowest material frame in the stacking frame 640, the two limiting columns move away from each other to release the material frame in the stacking frame 640, then the carrier plate moves downward by a distance equal to the thickness of the material frame, then the two limiting columns move in opposite directions and are abutted to the bottom of the material frame in the penultimate layer in the stacking frame 640, and finally the carrier plate continues to move downward and make the bottom of the material frame attach to the two conveyer belts 620, so that the material frame is transported to a preset position by using the conveyer belt 620.

As shown in fig. 1 and 8, in order to facilitate cleaning of the raw glass on the turntable 210, the cleaning apparatus 300 includes a first cleaning assembly 310 positioned above the turntable 210 and a second cleaning assembly 320 positioned at one side of the turntable 210. The first cleaning assembly 310 includes a first bracket 311 straddling the turntable 210, the first bracket 311 including a horizontal rail 312, the horizontal rail 312 having a vertical rail 313 movable along the horizontal rail and a drum 314 movable along the vertical rail 313 for cleaning a workpiece. In this embodiment, the roller 314 may be a brush roller. The horizontal guide rail 312 is mounted on the first bracket 311, and the horizontal guide rail 312 and the vertical guide rail 313 are both mounted with driving motors for driving the vertical guide rail 313 to horizontally move in a straight line on the horizontal guide rail 312 and driving the roller 314 to vertically move in a straight line on the vertical guide rail 313, respectively. The slide plate of the vertical guide 313 is fixed with a connecting piece rotatably connected with the roller 314, and the roller 314 can freely rotate on the connecting piece. The two driving motors are matched with each other to drive the roller 314 to reach the transfer station 211 butted on the turntable 210 to clean the glass, thereby facilitating the cleaning work of the glass.

The second cleaning assembly 320 includes a driving shaft 321 and a driven shaft 322 disposed opposite to each other, and one end of the adhesive tape for adhering the surface of the drum 314 is wound around the driving shaft 321 and the other end is wound around the driven shaft 322. The second cleaning assembly 320 is used to clean the drum 314, and the drum 314 rolls around its own center on the adhesive tape, which may adhere to dust and foreign substances attached to the surface of the drum 314. The cylinder 314 is in contact with the adhesive tape between the driving shaft 321 and the driven shaft 322, one end of the driving shaft 321 is connected with a motor, the motor drives the driving shaft 321 to rotate, the cylinder 314 is cleaned through movement of the adhesive tape, and meanwhile, the part, adhered with dust and impurities, of the adhesive tape is gradually wound on the driving shaft 321. By using tape to adhere dust and foreign matter to the drum 314, the cost is low.

Further, as shown in fig. 8, the second cleaning assembly 320 further includes a second bracket 323 and a traverse plate 324 on the second bracket 323, the driven shaft 322 is disposed at one end of the traverse plate 324, the traverse plate 324 is provided with an elongated groove 325 near the other end thereof, and the adhesive tape passes from the elongated groove 325 to cover the plate surface of the traverse plate 324. The driving shaft 321 and the driven shaft 322 are both mounted on the second bracket 323 and are rotatably connected with the second bracket 323. Wherein, driven shaft 322 is parallel and level with diaphragm 324, and driving shaft 321 is located below diaphragm 324. The driving motor of the first cleaning assembly 310 drives the drum 314 to roll on the adhesive tape of the transverse plate 324 around its own center, the transverse plate 324 protects the adhesive tape from breakage, and the dust and foreign substances on the drum 314 are cleaned more thoroughly.

As shown in fig. 1 and 7, in order to facilitate the transfer robot 100 to grasp glass, the transfer robot 100 includes a rotation mechanism 110, a rotation arm 120 provided on an output shaft of the rotation mechanism 110 and interfacing with a turntable 210 and a printing plate 410, a fifth vacuum suction part 130 provided on both ends of the rotation arm 120, and a rotation arm lifting mechanism 140 driving the rotation arm 120 to lift. The rotating mechanism 110 preferably comprises a motor and a speed reducer, the motor is arranged on the stand 700, an input shaft of the speed reducer is connected with an output shaft of the motor, and the output shaft of the speed reducer is arranged in a vertical state so as to conveniently drive the rotating arm 120 to rotate. In order to facilitate the connection between the rotating arm 120 and the output shaft of the speed reducer, the rotating arm 120 is provided with a sleeve, one end of the sleeve is connected with the center of the rotating arm 120, and the other end of the sleeve is sleeved on the output shaft of the speed reducer. At this time, a sliding groove with a preset length is arranged on the output shaft of the speed reducer along the extending direction of the output shaft, a sliding block matched with the sliding groove is arranged on the inner wall of the sleeve, when the sleeve is sleeved on the output shaft of the speed reducer, the sliding block can be accommodated in the sliding groove, and the sliding block can slide in the sliding groove along the axial direction of the output shaft of the speed reducer, so that the rotating arm 120 can move along the vertical direction. In order to drive the boom 120 to move in a direction, the boom lifting mechanism 140 preferably adopts a linear cylinder, the linear cylinder is arranged on the speed reducer, and the output shaft of the linear cylinder is rotationally connected with the sleeve, wherein the sleeve is sleeved with a bearing, and the outer ring of the bearing is connected with the output shaft of the linear cylinder. In addition, the boom lifting mechanism 140 may also be a rack and pinion assembly or a motor lead screw assembly. The fifth vacuum suction parts 130 are provided in two numbers on both ends of the rotation arm 120, respectively, for the convenience of sucking glass. The fifth vacuum suction part 130 is a plurality of vent holes uniformly provided on the rotary arm 120, and the vent holes communicate with the vacuum pump, and preferably the vacuum suction port of the fifth vacuum suction part 130 is disposed upward. In a specific arrangement, it is preferable that the horizontal plane of the turntable 210 is above the horizontal plane of the printing plate 410, so that when one end of the rotating arm 120 is located in the first material taking opening 212, the other end of the rotating arm 120 is located below the turntable 210, thereby facilitating the rotation of the turntable 210. At this time, the first material taking opening 212 is formed through the turntable 210, so that one end of the rotating arm 120 can be conveniently moved from the first material taking opening 212 to the lower side of the turntable 210, and thus the turntable 210 can be conveniently rotated after the rotating arm 120 conveys glass, and at this time, the other end of the rotating arm 120 can be accommodated in the second material taking opening 412. Of course, the second material taking opening 412 may also penetrate through two opposite sides of the printing plate 410, so that the rotating arm 120 may be located below the printing plate 410. In this embodiment, when the printing of the glass on the printing plate 410 is completed, the rotating arm lifting mechanism 140 drives the rotating arm 120 to move upwards, and makes two ends of the rotating arm 120 adsorb the glass on the printing station 411 and the transferring station 211 respectively and simultaneously, and after the glass in the printing station 411 and the transferring station 211 is adsorbed, the rotating mechanism 110 drives the rotating arm 120 to rotate 180 degrees to exchange the positions of the glass on the transferring station 211 and the printing station 411, so that the transferring of the glass is realized, the waiting time of glass processing is reduced, and the production efficiency is improved. Of course, the arrangement of the rotating arm 120 may also be that the rotating arm 120 is disposed on an output shaft of a motor, the motor is disposed on an output shaft of a linear cylinder, and the linear cylinder is disposed on the frame 700.

As shown in fig. 2 and 11, to facilitate positioning of the glass at the transfer station 211, the first positioning device 240 includes a first clamping member 241, a first drive mechanism 242, and a second drive mechanism 243. The number of first clamping members 241 is at least three, and a plurality of first clamping members 241 are uniformly disposed about the circumference of the transfer station 211. If the number of the first clamping pieces 241 is three, the round or triangular glass can be clamped and positioned, if the number of the first clamping pieces 241 is four, the quadrangular glass and the polygonal glass can be clamped and positioned. The number of first clamping members 241 is preferably eight circular cylindrical bars, and the transfer station 211 defines a rectangular area for the turntable 210, and two first clamping members 241 are arranged on each of the peripheral sides of the transfer station 211. In order to facilitate the positioning of the glass on the transfer station 211 by the first clamping members 241, the transfer station 211 is further provided with eight first strip-shaped holes 215 in the circumferential direction, two first strip-shaped holes 215 are arranged on each of the peripheral sides of the transfer station 211, and the extending directions of the first strip-shaped holes 215 are perpendicular to the side sides of the transfer station 211, so that the first strip-shaped holes 215 are arranged in one-to-one correspondence with the first clamping members 241, and when each transfer station 211 rotates to the upper side of the first positioning device 240, the first clamping members 241 can penetrate through the first strip-shaped holes 215 and can move in the first strip-shaped holes 215. Meanwhile, in the present embodiment, the number of the first clamping members 241 is identical to that of the first strip-shaped holes 215, and only one first clamping member 241 may be disposed on each of the peripheral sides of the transfer station 211. Of course, the transfer station 211 may also be circular or conform to the shape of the glass with the first clamp 241 unchanged in position. The first driving mechanism 242 may be a linear cylinder or a screw assembly. The second driving mechanism 243 may be in the form of a timing belt assembly, a screw assembly, or a dual-output cylinder.

In order to facilitate the synchronous driving of the first clamping member 241 located on the same side of the transfer station 211, a first mounting plate 244 and a connecting member 245 are also provided. The first mounting plate 244 is preferably a rectangular plate and the connector 245 is preferably an elongated block. The number of the connecting pieces 245 is four, each connecting piece 245 is respectively connected with two first clamping pieces 241 corresponding to each side of the transferring station 211, and the connecting pieces 245 are also in sliding connection with the first mounting plates 244, and the specific connection mode can be through guide rails. In this embodiment, the first driving mechanism 242 is in driving connection with the first mounting plate 244, and the second driving mechanism 243 is in driving connection with the connecting member 245.

In this embodiment, when glass is placed on the transfer station 211, the first driving mechanism 242 drives the first clamping members 241 to pass through the corresponding first bar-shaped holes 215 to the preset positions, and then drives the first clamping members 241 disposed opposite to the transfer station 211 to move in opposite directions by using the second driving mechanism 243, so as to form a clamping state on the glass, thereby pushing the glass to move to the preset positions for positioning. When the glass positioning is completed, the first vacuum suction part 213 fixes the glass by negative pressure. Meanwhile, after the second driving mechanism 243 drives the first clamping members 241 disposed opposite to each other on the transferring station 211 to move to the preset position, the first driving mechanism 242 drives the first clamping members 241 to withdraw from the corresponding first bar holes 215, so as to complete the positioning operation of the glass on the transferring station 211 and continue the above operation after the turntable 210 rotates for a quarter turn.

As shown in fig. 11, the four connection members 245 are preferably arranged on the first mounting plate 244 at a side close to the turntable 210 by means of guide rails. In order to maintain stability of the connector 245 when it moves, one connector 245 is provided on the first mounting plate 244 by two guide rails. In order to facilitate the opposite first clamping members 241 on the transfer station 211 to move towards or away from each other, the number of the second driving mechanisms 243 is two, and the two second driving mechanisms 243 are respectively disposed on one side of the first mounting plate 244 away from the turntable 210, and at this time, corresponding waist-shaped holes are formed on the first mounting plate 244. The second driving mechanism 243 includes a motor, a driving wheel, a driven wheel and a synchronous belt, the motor is preferably a stepper motor, the body of the motor is arranged on the first mounting plate 244, the driving wheel is connected with the output shaft of the motor, the driven wheel is rotatably arranged on the first mounting plate 244, the synchronous belt is respectively connected with the driving wheel and the driven wheel, and the two synchronous belts are arranged in an up-down and vertical state. Meanwhile, two connecting pieces 245 connected to the first clamping pieces 241 located at opposite sides of the transferring station 211 are connected to opposite two conveying sections of the same synchronous belt through the waist-shaped holes, respectively. In this embodiment, the synchronous belt is driven to rotate by the forward rotation or the reverse rotation of the motor, so that the first clamping members 241 located at opposite sides of the transfer station 211 are driven to move in opposite directions or in opposite directions.

As shown in fig. 11, in order to prevent the first clamping member 241 from deviating from the preset trajectory when driven by the first driving mechanism 242, the first positioning device 240 further includes a second mounting plate 246 and a guide post 247. The second mounting plate 246 is preferably a rectangular plate body disposed below the first mounting plate 244. The guide posts 247 are preferably circular posts, and the number of guide posts 247 is four. One end of the guide post 247 is connected to the second mounting plate 246, and the other end passes through the first mounting plate 244 and is slidably connected to the first mounting plate 244 in such a manner that the guide post 247 passes through a slide hole provided in the first mounting plate 244. At this time, it is preferable that a driving part for driving the second lifting lever 231 to move is provided on the second mounting plate 246, and the second lifting lever 231 passes through both synchronous belts and passes through the first mounting plate 244 at the same time, so that the second lifting lever 231 can conveniently drive the fourth vacuum suction part 232 to suck glass through the first material taking opening 212.

To further control the position of the movement of the first clamping member 241, a photoelectric sensor is also provided on the first mounting plate 244. Preferably, the number of the photoelectric sensors is four, and the photoelectric sensors are respectively arranged at preset positions of the first mounting plate 244 in a pair, so as to control the positions of the first clamping pieces 241 positioned on the opposite sides of the transferring station 211 when the first clamping pieces are in a clamping state and a separating state. In order to facilitate the photoelectric sensors to detect the position of the first clamping member 241, a sensing piece is disposed on one of the connecting members 145 located on one opposite side of the transferring station 211, two photoelectric sensors are located on the moving track of the corresponding sensing piece, and the sensing piece is located between the two photoelectric sensors. When one of the photoelectric sensors detects that the sensing piece is located, a signal is sent to the corresponding second driving mechanism 243, and the second driving mechanism 243 stops working after receiving the signal.

As shown in fig. 11, in order to facilitate the first driving mechanism 242 to drive the first clamping member 241 through the corresponding first bar-shaped hole 215, the first driving mechanism 242 is preferably a linear cylinder. The body of the linear cylinder is disposed on the second mounting plate 246, and the output shaft of the linear cylinder is connected to the first mounting plate 244. For convenience, the linear cylinder drives the first mounting plate 244 to move, a supporting block 248 may be further provided, the supporting block 248 is preferably a U-shaped block, an opening end of the U-shaped block is connected with the first mounting plate 244, and an output shaft of the linear cylinder is connected with a closed end of the U-shaped block.

In order to facilitate positioning of the glass on the printing station 411 to make the position of the glass printed pattern more accurate, the screen printing apparatus 400 further includes a second positioning device located below the printing plate 410, where the second positioning device includes a second clamping member, a third driving mechanism and a fourth driving mechanism, and the plurality of second clamping members can be driven by the first driving mechanism to move toward the printing station 411, and the plurality of second clamping members can be driven by the second driving mechanism to draw together toward the center of the printing station 411 to clamp the glass located on the printing station 411. At the same time, in order to facilitate the positioning of the glass at the printing station by the second clamping members, the printing plate 410 is further provided with second strip-shaped holes 414, the number of which is identical to that of the second clamping members. The specific structure and arrangement of the second positioning means are referred to the first positioning means 240, and will not be described in detail herein.

In another embodiment of the automatic glass screen printing machine, the automatic glass screen printing machine comprises a transferring manipulator, a transferring platform, a cleaning device and a screen printing device, wherein the transferring platform comprises a turntable, a rotating motor for driving the turntable to rotate and a third lifting mechanism which is positioned below the turntable and is close to the screen printing device, a plurality of transferring stations for placing glass are arranged on a bearing surface of the turntable, a first vacuum adsorption part for fixing the glass and a first lifting through hole penetrating through the turntable are arranged on the transferring stations, and the third lifting mechanism comprises a third lifting rod capable of moving towards the direction of the first lifting through hole and penetrating through the first lifting through hole and a sixth vacuum adsorption part arranged on the end part of the third lifting rod; the screen printing device comprises a printing plate, a printing assembly positioned above the printing plate and a second lifting mechanism positioned below the printing plate, wherein a printing station for placing glass, a second vacuum adsorption part for fixing the glass on the printing station and a second lifting through hole penetrating through the turntable are arranged on the printing plate, and the fourth lifting mechanism comprises a fourth lifting rod capable of moving towards the direction of the second lifting through hole and penetrating through the second lifting through hole and a seventh vacuum adsorption part arranged on the end part of the fourth lifting rod; the cleaning device is used for cleaning the glass on the transferring station; the transfer robot is used for conveying glass between the transfer station and the printing station.

The automatic glass screen printing machine in this embodiment is different from the foregoing embodiments in the manner in which the glass is transported by the transfer robot, and other components may be arranged with reference to the foregoing embodiments, which will not be described in detail herein. Specifically, all be provided with the first through-hole that lifts that runs through the carousel on being located every on the carousel and transport the station, be provided with the second through-hole that lifts that runs through the printing plate on the printing station on the printing plate. The third lifting mechanism is positioned below the turntable and comprises a third lifting rod which can move towards the direction of the first lifting through hole and pass through the corresponding first lifting through hole, and a sixth vacuum adsorption part arranged on the end part of the third lifting rod. The fourth lifting mechanism is positioned below the turntable and comprises a fourth lifting rod which can move towards the direction of the second lifting through hole and pass through the second lifting through hole, and a seventh vacuum adsorption part arranged on the end part of the fourth lifting rod. The specific working principle of the automatic screen printing machine in the embodiment is that after glass printing of a printing plate is completed, a fourth lifting rod ascends and passes through a second lifting through hole to drive finished glass on a printing station to ascend for a preset distance, a grabbing end of a transferring manipulator moves to the lower side of the finished glass and adsorbs a blank surface of the finished glass and then conveys the blank surface of the finished glass to the upper side of a rotating disc, and then a third lifting rod ascends and passes through a corresponding first lifting through hole and adsorbs a blank surface of the finished glass and descends, so that the finished glass is placed in the transferring station, and the transferring manipulator only has one grabbing end. When the transfer manipulator is provided with two grabbing ends, the turntable and the printing plate are preferably symmetrically arranged about the transfer manipulator, and the third lifting rod and the fourth lifting rod are simultaneously arranged upwards, so that the transfer manipulator is driven to simultaneously move the raw material glass on the transfer station and the finished glass on the printing plate by a preset distance, and the two grabbing ends of the transfer manipulator respectively move to the lower parts of the raw material glass and the finished glass and rotate 180 degrees after adsorbing the blank surfaces of the glass, so that the loading and unloading process of the printing plate is completed.

The above description and drawings should not be taken as limiting the scope of the invention in any way, but rather should be understood to cover all modifications, structural equivalents, or direct/indirect applications of the invention in the light of the general principles of the present invention which may be employed in the present invention and illustrated by the accompanying drawings.

Claims

1. The automatic glass screen printing machine is characterized by comprising a transfer manipulator, a transfer platform, a cleaning device and a screen printing device, wherein the transfer platform comprises a turntable and a rotating motor for driving the turntable to rotate, a plurality of transfer stations for placing glass are arranged on a bearing surface of the turntable, a first material taking opening which corresponds to each transfer station and extends to a glass placing area of the transfer station is arranged on the peripheral side of the turntable, the first material taking opening penetrates through two opposite sides of the turntable, and a first vacuum adsorption part for fixing glass is arranged on the transfer station; the screen printing device comprises a printing plate and a printing assembly positioned above the printing plate, wherein a printing station for placing glass and a second vacuum adsorption part for fixing the glass on the printing station are arranged on the printing plate, and a second material taking opening which corresponds to the printing station and extends to a glass placing area of the printing station is arranged on the peripheral side of the printing plate; the transferring manipulator stretches into the first material taking opening to convey the glass into a printing station on the printing plate, and the other end of the transferring manipulator stretches into the second material taking opening to grasp the back surface of the finished glass and convey the glass into the transferring station; the cleaning device is used for cleaning the glass on the transferring station; the method comprises the steps of,

The feeding and discharging manipulator comprises a cross beam, a sliding seat arranged on the cross beam in a sliding manner, a feeding adsorption part and a discharging adsorption part which are arranged on the sliding seat through driving components, wherein the feeding adsorption part can move in the vertical direction under the driving of the corresponding driving component, the discharging adsorption part can move in the horizontal direction under the driving of the corresponding driving component, and a vacuum suction port of the discharging adsorption part is arranged upwards.

2. The automatic glass screen printing machine according to claim 1, further comprising a conveying device and a first lifting mechanism positioned below the conveying device, wherein the conveying device comprises two mounting frames and two conveying belts, the two mounting frames are arranged in parallel, and the two conveying belts are arranged on the mounting frames in a one-to-one correspondence manner; the first lifting mechanism comprises a first lifting rod capable of moving along the vertical direction and a third vacuum adsorption part arranged on the end part of the first lifting rod, and the first lifting rod is positioned between the two mounting frames.

3. The automatic glass screen printing machine according to claim 2, wherein the first material taking opening penetrates through the rotary table, the automatic glass screen printing machine further comprises a second lifting mechanism located below the rotary table, the second lifting mechanism comprises a second lifting rod capable of moving in the vertical direction and penetrating through the first material taking opening, and a fourth vacuum adsorption part arranged on the end part of the second lifting rod, and the blanking adsorption part can move to the position below the fourth vacuum adsorption part for adsorbing glass.

4. The automatic glass screen printing machine according to claim 1, wherein the cleaning device comprises a first cleaning assembly positioned above the turntable and a second cleaning assembly positioned on one side of the turntable, the first cleaning assembly comprises a first bracket which spans the turntable, the first bracket comprises a horizontal guide rail, and a vertical guide rail which can move along the horizontal guide rail and a roller which can move along the vertical guide rail are arranged on the horizontal guide rail and is used for cleaning glass; the second cleaning assembly comprises a driving shaft and a driven shaft which are oppositely arranged, one end of an adhesive tape used for adhering attachments on the surface of the roller is wound on the driving shaft, the other end of the adhesive tape is wound on the driven shaft, the second cleaning assembly further comprises a second support and a transverse plate positioned on the second support, the driven shaft is arranged at one end of the transverse plate, a strip-shaped groove is formed in the position, close to the other end of the transverse plate, and the adhesive tape penetrates through the strip-shaped groove to cover the surface of the transverse plate.

5. The automatic glass screen printer of claim 1, wherein the first take-out port extends through the turntable; the transfer manipulator comprises a rotating mechanism, a rotating arm, a fifth vacuum adsorption part and a rotating arm lifting mechanism, wherein the rotating arm is arranged on an output shaft of the rotating mechanism and is respectively in butt joint with the turntable and the printing plate, the fifth vacuum adsorption part is arranged at two ends of the rotating arm, the rotating arm lifting mechanism is used for driving the rotating arm to lift, a vacuum suction port of the fifth vacuum adsorption part is upwards arranged, and the rotating arm can be respectively accommodated in the first material taking port and the second material taking port.

6. The automatic glass screen printer of claim 1, wherein the transfer platform further comprises a first positioning device positioned below the turntable, the first positioning device comprising a plurality of first clamping members, a first driving mechanism and a second driving mechanism, the plurality of first clamping members being movable toward the transfer station corresponding to the position of the first positioning device under the driving of the first driving mechanism, the plurality of first clamping members being movable toward the center of the transfer station under the driving of the second driving mechanism to clamp glass positioned on the transfer station.

7. The automatic glass screen printing machine according to claim 6, wherein the number of the first clamping pieces is at least four, the transferring station is an area which is defined on the turntable and is rectangular, first strip-shaped holes which are consistent with the number of the first clamping pieces are formed in the circumferential direction of the transferring station, at least one first strip-shaped hole is formed in each of the peripheral sides of the transferring station, and the extending direction of the first strip-shaped holes is perpendicular to the side of the transferring station.

8. The automatic glass screen printing machine of claim 1, further comprising a second positioning device positioned below the printing plate, the second positioning device comprising a second clamping member, a third drive mechanism and a fourth drive mechanism, wherein a plurality of the second clamping members are movable toward the printing station under the drive of the third drive mechanism, and wherein a plurality of the second clamping members are movable toward the center of the printing station under the drive of the fourth drive mechanism to clamp glass positioned on the printing station.

9. The automatic glass screen printing machine is characterized by comprising a transfer manipulator, a transfer platform, a cleaning device and a screen printing device, wherein the transfer platform comprises a turntable, a rotating motor for driving the turntable to rotate, a third lifting mechanism positioned below the turntable and close to the screen printing device, and a fourth lifting mechanism positioned below the turntable, a plurality of transfer stations for placing glass are arranged on a bearing surface of the turntable, a first vacuum adsorption part for fixing the glass and a first lifting through hole penetrating through the turntable are arranged on the transfer stations, and the third lifting mechanism comprises a third lifting rod capable of moving towards the direction of the first lifting through hole and penetrating through the first lifting through hole, and a sixth vacuum adsorption part arranged on the end part of the third lifting rod; the screen printing device comprises a printing plate, a printing assembly positioned above the printing plate and a second lifting mechanism positioned below the printing plate, wherein a printing station for placing glass, a second vacuum adsorption part for fixing the glass on the printing station and a second lifting through hole penetrating through the turntable are arranged on the printing plate, and the fourth lifting mechanism comprises a fourth lifting rod capable of moving towards the direction of the second lifting through hole and penetrating through the second lifting through hole and a seventh vacuum adsorption part arranged on the end part of the fourth lifting rod; the cleaning device is used for cleaning the glass on the transferring station; the transfer manipulator is used for conveying glass between the transfer station and the printing station;

The fourth lifting rod is lifted upwards and penetrates through the second lifting through hole to drive finished glass on the printing station to ascend for a preset distance, the grabbing end of the transferring manipulator is moved to the lower side of the finished glass and is used for adsorbing a blank surface of the finished glass and then conveying the blank surface of the finished glass to the upper side of the turntable, and then the third lifting rod is lifted upwards and penetrates through the corresponding first lifting through hole and is used for adsorbing the blank surface of the finished glass and is lifted downwards, so that the finished glass is placed in the transferring station.