CN112659724A

CN112659724A - Screen printing equipment with liquid supply and scraper plate running synchronously

Info

Publication number: CN112659724A
Application number: CN202011510254.XA
Authority: CN
Inventors: 支亮亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-19
Filing date: 2020-12-19
Publication date: 2021-04-16

Abstract

The invention relates to the technical field of printing equipment and discloses screen printing equipment with a liquid supply function and a scraper synchronously running. This supply liquid and scraper blade synchronous operation's screen printing equipment is connected with cam and carousel through the transmission of belt drive difference, guarantees that the constantly of feed structure and scraper speed matches, transfers the functioning speed of feed structure and scraper according to printing speed, improves printing surface quality, and thick liquid gets into printing half tone surface when the scraper pushes down, and unnecessary thick liquid gets into the inside liquid return that accomplishes of collection liquid chamber when the scraper lifts, reaches the effect that the scraper pushes down and feed return cooperation goes on, improves the efficiency of printing.

Description

Screen printing equipment with liquid supply and scraper plate running synchronously

Technical Field

The invention relates to the technical field of printing equipment, in particular to screen printing equipment with liquid supply and a scraper plate running synchronously.

Background

In the silk-screen printing process, a silk-screen printer is adopted to print the conductive paste on a silicon chip, the paste is added on a screen plate during printing, a scraper applies certain pressure to the screen plate, in the screen printing process, too much or too little feeding is caused by the unmatched feeding and scraper scraping speeds, so that the printing is unclear or is missed, improves the defective rate and reduces the production quality of products, a scraper device is generally arranged on the traditional screen printing machine, the scraper device mainly adopts the operation modes of single scraper ink scraping and ink knife ink returning, when in printing, the scraper is firstly pressed down, the printing is carried out, the scraper is lifted up, then the ink knife is pressed down, the ink is returned, and the ink knife is lifted up to complete the whole action, when the printing mode is adopted, the ink return of the ink knife needs a certain time, thus, the printing speed can not be effectively satisfied, and the speed can not be effectively increased after the printing speed reaches a certain printing speed.

In order to solve the problems, the inventor provides the screen printing equipment with the liquid supply and the scraper running synchronously, the screen printing equipment with the liquid supply and the scraper running synchronously is respectively connected with a cam and a rotary table in a transmission way through belt transmission, the constant matching of the speed of a material supply structure and the speed of a scraper is ensured, the running speed of the material supply structure and the running speed of the scraper are adjusted according to the printing speed, the quality of a printing surface is improved, slurry enters the surface of a printing screen plate when the scraper presses down, and redundant slurry enters a liquid collection cavity to complete liquid return when the scraper lifts up, so that the effect of the matching of the lifting and pressing of the scraper and the material supply and.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the screen printing equipment with the liquid supply and the scraper running synchronously, which has the advantages of adjusting the feeding structure according to the actual printing speed, and simultaneously adjusting the scraper running, the scraper pressing and the feeding and returning, and solves the problems that the printing quality is influenced by the unmatched printing speeds of the feeding and the scraper, and the printing efficiency is reduced by a certain time required by the returning structure.

(II) technical scheme

In order to achieve the purpose of adjusting the feeding structure, the operation of the scraper, the downward pressing of the scraper and the feeding and returning of the materials simultaneously according to the actual printing speed, the invention provides the following technical scheme: a screen printing device with liquid supply and scraper synchronous operation comprises a frame body, wherein the top of the left end of the frame body is rotatably connected with a motor rotating shaft, the outer part of the motor rotating shaft is connected with a cam through belt transmission, the small end of the cam is hinged with a first connecting rod, the other end of the first connecting rod is hinged with a piston, the bottom of the piston is provided with a slurry conveying pipeline, the left end of the bottom of the piston is fixedly connected with a supporting frame, the inside of the supporting frame is provided with a limiting groove, the inside of the limiting groove is in limit connection with a scraper, the top of the left end of the scraper is hinged with a second connecting rod, the other end of the second connecting rod is hinged with a movable block, the inside of the movable block is fixedly connected with a first magnet, the inside of the top of the supporting frame is fixedly connected with an electromagnet, the, the inside fixedly connected with contact area of ring rail right side half-end, the bottom fixedly connected with collecting chamber of support body, the middle part swing joint of support body has the floating plate, the inside elastic connection of floating plate has the check valve, the top of support body is rotated and is connected with the carousel, the circumferential edge fixedly connected with lug of carousel, the outside swing joint of lug has the truss, the bottom of truss is connected with the intercommunication valve through the linkage transmission, the intercommunication pipeline has been seted up to the inside of intercommunication valve, the top joint of support body has the thick liquid box.

Preferably, the inside cavity of support body, motor shaft's power comes from the outside motor, the belt drive is total two sets ofly, and a set of outside for motor shaft is connected with the carousel through the belt drive, and another set of outside for motor shaft is connected with the cam through the belt drive, makes feed back and scraper push down to lift through the transmission of belt drive and can go on in step.

Preferably, the outer portion of the cam is matched with the inner portion of the ring rail, the outer portion of the piston is matched with the inner portion of the liquid collecting cavity, a slurry conveying pipeline arranged inside the piston is communicated with the inner portion of the liquid collecting cavity, and printing slurry is extruded to the plane of the printing screen plate from the inner portion of the liquid collecting cavity.

Preferably, the inside of support frame and the outside looks adaptation of movable block, the bottom of support frame articulates there is the telescopic link, the electro-magnet is connected with contact area circuit, the contact area is divided into two parts, and partly fixed connection is in the inside of circular rail right half, and another part fixed connection is in the periphery of the little head end of cam, makes the piston reciprocate in the collection liquid intracavity through the rotation of cam, provides the condition basis for supplying liquid back flow.

Preferably, the top of collection liquid chamber and the middle part intercommunication of support body, there is the clearance in the outside of floating disc and the inside at support body middle part, the inside at support body top and the outside looks adaptation of cell frame make the cell frame only reciprocate in vertical direction under the spacing of support body.

Preferably, the cell frame divide into upper and lower two parts, the first section of cell frame is initiative cell body, and the second section comprises branch and cock body, the linkage comprises two articulated connecting rods each other, and the cell frame not only can compress the volume of support body inner space, can also communicate the disconnection with thick liquid box automatically at the round trip movement in-process.

Preferably, the outside of intercommunication valve and the inside looks adaptation of support body, the space that the bottom of thick liquid box is connected with the support body middle part through intercommunication valve liquid way communicates the thick liquid box when the groove frame upward movement through the effect of intercommunication valve, makes the thick liquid get into the inner space of support body.

(III) advantageous effects

Compared with the prior art, the invention provides the screen printing equipment with the liquid supply and the scraper plate running synchronously, which has the following beneficial effects:

1. the screen printing equipment with the liquid supply and the scraper synchronously running is characterized in that a first connecting rod is hinged to the small head end of a cam, a piston is hinged to the other end of the first connecting rod, the internal slurry of a control liquid collection cavity enters the plane of a printing screen plate through a slurry conveying pipeline, the contact belt of the internal fixed connection of the ring rail is communicated with the control scraper to press down and lift up, meanwhile, the circumferential edge of a rotary disc is connected with a groove frame through a lug in a transmission mode, the bottom end of the groove frame is connected with a communication valve through a connecting rod group in a transmission mode, the supply of the printing slurry is controlled, the cam and the rotary disc are respectively connected to the external part of a motor rotary shaft in a transmission mode through belt transmission, the speed of the motor rotary shaft and the speed of the rotary disc are controlled together, the feeding structure is guaranteed to be matched with the scraper.

2. This supply liquid and scraper blade synchronous operation's screen printing equipment, the inside fixedly connected with contact area through the right half section of circular rail, the rotation of cam in the circular rail inside, make the electro-magnet arouse magnetic field when the cam rotates to right half section promptly piston compression collecting chamber inner space, repulsion magnet one, printing thick liquid gets into printing half screen surface via defeated thick liquid pipeline this moment, make the scraper push down through the cooperation of telescopic link and connecting rod two scrape half screen surface, on the contrary when the cam rotates to the left half section of circular rail, the scraper lifts, unnecessary thick liquid gets into the inside liquid return that accomplishes of collecting chamber via defeated thick liquid pipeline simultaneously, thereby reach the effect that pushes down and the feed back goes on simultaneously of scraper, improve the efficiency of printing.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the operation of the present invention;

FIG. 3 is an enlarged view of the structure of FIG. 1 at A in accordance with the present invention;

FIG. 4 is an enlarged view of the structure of FIG. 1 at B in accordance with the present invention;

FIG. 5 is an enlarged view of the structure of FIG. 2 at C in accordance with the present invention;

fig. 6 is an enlarged view of the structure of fig. 2 according to the present invention.

In the figure: 1. a frame body; 2. a motor shaft; 3. belt transmission; 4. a cam; 5. a first connecting rod; 6. a piston; 7. a slurry delivery pipeline; 8. a support frame; 9. a limiting groove; 10. a scraper; 11. a second connecting rod; 12. a movable block; 13. a first magnet; 14. an electromagnet; 15. a telescopic rod; 16. a circular rail; 17. a contact strip; 18. a liquid collection cavity; 19. a floating plate; 20. a one-way valve; 21. a turntable; 22. a bump; 23. a slot frame; 24. a linkage; 25. a communication valve; 26. a communicating pipe; 27. a slurry box.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, a screen printing apparatus with liquid supply and scraper running synchronously comprises a frame body 1, a motor shaft 2 is rotatably connected to the top of the left end of the frame body 1, the frame body 1 is hollow, the power of the motor shaft 2 comes from an external motor, two sets of belt drives 3 are provided, one set is that the outside of the motor shaft 2 is connected with a rotary table 21 through the belt drive 3, the other set is that the outside of the motor shaft 2 is connected with a cam 4 through the belt drive 3, the feeding and returning and the pressing and lifting of the scraper 10 can be synchronously performed through the drive of the belt drive 3, the outside of the motor shaft 2 is connected with the cam 4 through the belt drive 3, the outside of the cam 4 is matched with the inside of a ring rail 16, the outside of a piston 6 is matched with the inside of a liquid collection cavity 18, a slurry delivery pipe 7 arranged inside the piston 6 is communicated with the inside of the liquid collection cavity 18, and the printing slurry is extruded from the inside, a connecting rod I5 is hinged at the small end of the cam 4, a piston 6 is hinged at the other end of the connecting rod I5, a slurry conveying pipeline 7 is arranged at the bottom of the piston 6, a supporting frame 8 is fixedly connected at the left end of the bottom of the piston 6, the inside of the supporting frame 8 is matched with the outside of a movable block 12, a telescopic rod 15 is hinged at the bottom of the supporting frame 8, an electromagnet 14 is in circuit connection with a contact belt 17, the contact belt 17 is divided into two parts, one part is fixedly connected inside the right half part of a ring rail 16, the other part is fixedly connected at the periphery of the small end of the cam 4, the piston 6 moves back and forth in a liquid collecting cavity 18 through the rotation of the cam 4 to provide a condition basis for supplying liquid return, a limiting groove 9 is arranged inside the supporting frame 8, a scraper 10 is in limiting connection inside the limiting groove 9, a connecting rod II 11 is hinged at, the inside of the movable block 12 is fixedly connected with a magnet I13, the inside of the top of the support frame 8 is fixedly connected with an electromagnet 14, the top of the left end of the scraper 10 is hinged with a telescopic rod 15, the left end of the bottom of the frame body 1 is fixedly connected with a ring rail 16, the inside of the right half end of the ring rail 16 is fixedly connected with a contact strip 17, the bottom of the frame body 1 is fixedly connected with a liquid collecting cavity 18, the top of the liquid collecting cavity 18 is communicated with the middle of the frame body 1, a gap exists between the outside of the floating disc 19 and the inside of the middle of the frame body 1, the inside of the top of the frame body 1 is matched with the outside of the slot frame 23, so that the slot frame 23 only moves back and forth in the vertical direction under the limit of the frame body 1, the middle of the frame body 1 is movably connected with the floating disc 19, the inside of the floating disc 19 is elastically connected with, the cell frame 23 divide into upper and lower two parts, the first section of cell frame 23 is initiative cell body, the second section is branch and cock body constitution, linkage 24 comprises two articulated connecting rods of each other, cell frame 23 not only can compress the volume of 1 inner space of support body at the back and forth movement in-process, can also communicate the disconnection with thick liquid box 27 automatically, the bottom of cell frame 23 is connected with communicating valve 25 through linkage 24 transmission, the outside of communicating valve 25 and the inside looks adaptation of support body 1, the space that thick liquid box 27's bottom is connected with support body 1 middle part through communicating valve 25 liquid way communicates thick liquid box 27 when cell frame 23 upward movement through the effect of communicating valve 25, make the thick liquid get into the inner space of support body 1, communicating pipe 26 has been seted up to communicating valve 25's inside, the top joint of support body 1 has thick liquid box 27.

The working process and principle are as follows: when screen printing is carried out, a slurry box 27 is clamped at the top end of a frame body 1, a printing screen is arranged under the frame body 1, a motor is started, the outer part of a rotating shaft 2 of the motor is respectively in transmission connection with a cam 4 and a rotating disc 21 through a belt transmission 3, a ring rail 16 is fixedly connected at the left end of the bottom of the frame body 1, the cam 4 rotates inside the ring rail 16, the small head end of the cam 4 is in transmission connection with a piston 6 through a connecting rod I5, the outer part of the piston 6 is movably connected with a liquid collecting cavity 18, the rotation of the cam 4 enables the piston 6 to move back and forth inside the liquid collecting cavity 18 through the transmission of the connecting rod I5, slurry in the middle of the frame body 1 is communicated to extrude the printing slurry into the liquid collecting cavity 18 when the top pressure exceeds a limit value of a check valve 20, the position of the piston 6 movably connected inside the liquid collecting cavity 18 is changed, when the volume of the right end of the liquid, at the moment, the cam 4 rotates to the right section of the circular rail 16, the contact belt 17 is communicated, the electromagnet 14 is excited to repel the magnet I13, the movable block 12 moves downwards under the limit of the support frame 8 and drives the connecting rod II 11 hinged at the right end to move, at the moment, the scraper 10 is pressed out downwards, printing slurry extruded by the slurry conveying pipeline 7 is scraped and printed on the surface of the screen printing plate, at the moment, the telescopic rod 15 is in a folded state, when the cam 4 rotates to the left half section of the circular rail 16, the contact belt 17 is disconnected at the moment, the electromagnet 14 does not excite a magnetic field any more, the movable block 12 drives the connecting rod II 11 to recover the initial position under the elastic force of the spring to drive the scraper 10 to lift upwards, meanwhile, due to the rotation of the cam 4 and the transmission of the connecting rod I5, the piston 6 moves towards the left end of the liquid collecting cavity 18, the volume increase pressure inside the liquid collecting cavity 18 is reduced, completing the actions of material returning and knife lifting, wherein when the cam 4 rotates, the rotating disc 21 rotates simultaneously, the circumferential edge of the rotating disc 21 is in transmission connection with a groove frame 23 through a lug 22, the bottom end of the groove frame 23 is in transmission connection with a communication valve 25 through a connecting rod group 24, when the lug 22 rotates to the topmost end, the groove frame 23 is at the highest position, the transmission of the connecting rod group 24 enables a communication pipeline 26 inside the communication valve 25 to be communicated with a slurry box 27 and the inner space of the frame body 1, at the moment, slurry enters the inner space of the frame body 1 through the communication pipeline 26, the lug 22 rotates to the highest position to correspond to the small head end of the cam 4 rotating to the leftmost end, along with the rotation of the rotating disc 21, the groove frame 23 compresses the inner space of the frame body 1, due to the limiting effect of a one-way valve 20 elastically connected inside the floating disc 19, when the limited pressure is reached, the printing slurry enters the liquid collecting cavity 18, completing the action of material supplying, the printing efficiency is improved.

In summary, in the screen printing apparatus with liquid supply and scraper synchronous operation, the small head end of the cam 4 is hinged with the first connecting rod 5, the other end of the first connecting rod 5 is hinged with the piston 6, the slurry in the liquid collection cavity 18 is controlled to enter the plane of the printing screen plate through the slurry conveying pipeline 7, the contact belt 17 fixedly connected in the ring rail 16 is communicated with the scraper 10 to control the downward pressing and upward lifting, the circumferential edge of the rotary table 21 is connected with the groove frame 23 through the projection 22 in a transmission manner, the bottom end of the groove frame 23 is connected with the communicating valve 25 through the connecting rod group 24 in a transmission manner to control the supply of the printing slurry, the cam 4 and the rotary table 21 are respectively connected through the belt transmission 3 in a transmission manner outside the motor rotary shaft 2, so that the speeds of the cam 4 and the rotary table 21 are controlled together with the speed of the motor rotary shaft 2, the timing matching of the feeding structure and the speed of the, the quality of the printed surface is improved.

In addition, according to the screen printing equipment with the liquid supply and the scraper running synchronously, the contact belt 17 is fixedly connected inside the right half section of the ring rail 16, the cam 4 rotates inside the ring rail 16, so that the electromagnet 14 excites a magnetic field when the cam 4 rotates to the right half section, namely the piston 6 compresses the inner space of the liquid collecting cavity 18, the first magnet 13 is repelled, printing slurry enters the surface of a printing screen plate through the slurry conveying pipeline 7 at the moment, the scraper 10 is pressed downwards to scrape the surface of the screen plate through the cooperation of the telescopic rod 15 and the connecting rod two 11, on the contrary, when the cam 4 rotates to the left half section of the ring rail 16, the scraper 10 is lifted, and meanwhile, redundant slurry enters the liquid collecting cavity 18 through the slurry conveying pipeline 7 to finish liquid return, so that the effect that the lifting and the pressing of the scraper 10 and the feeding and the returning.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a supply liquid and scraper blade synchronous operation's screen printing equipment, includes support body (1), its characterized in that: the top of the left end of the frame body (1) is rotatably connected with a motor rotating shaft (2), the outer part of the motor rotating shaft (2) is connected with a cam (4) through a belt transmission (3) in a transmission way, the small end of the cam (4) is hinged with a first connecting rod (5), the other end of the first connecting rod (5) is hinged with a piston (6), the bottom of the piston (6) is provided with a slurry conveying pipeline (7), the left end of the bottom of the piston (6) is fixedly connected with a supporting frame (8), the inside of the supporting frame (8) is provided with a limiting groove (9), the inside of the limiting groove (9) is in limit connection with a scraper (10), the top of the left end of the scraper (10) is hinged with a second connecting rod (11), the other end of the second connecting rod (11) is hinged with a movable block (12), the inside of the movable block (12) is fixedly connected with a first magnet (13, the top of the left end of the scraper (10) is hinged with a telescopic rod (15), the left end of the bottom of the frame body (1) is fixedly connected with a ring rail (16), a contact strip (17) is fixedly connected inside the right half end of the ring rail (16), a liquid collecting cavity (18) is fixedly connected at the bottom of the frame body (1), the middle part of the frame body (1) is movably connected with a floating disc (19), the inner part of the floating disc (19) is elastically connected with a one-way valve (20), the top of the frame body (1) is rotationally connected with a turntable (21), the circumferential edge of the turntable (21) is fixedly connected with a lug (22), the outside of the convex block (22) is movably connected with a slot frame (23), the bottom of the slot frame (23) is connected with a communicating valve (25) through a connecting rod group (24) in a transmission way, the inside of intercommunication valve (25) has seted up intercommunication pipeline (26), the top joint of support body (1) has thick liquids box (27).

2. A liquid supply and squeegee synchronously operated screen printing apparatus as claimed in claim 1, wherein: the inside cavity of support body (1), the power of motor shaft (2) comes from the outside motor, belt drive (3) are total two sets ofly, and a set of outside for motor shaft (2) is connected with carousel (21) through belt drive (3), and another a set of outside for motor shaft (2) is connected with cam (4) through belt drive (3) transmission.

3. A liquid supply and squeegee synchronously operated screen printing apparatus as claimed in claim 1, wherein: the outer portion of the cam (4) is matched with the inner portion of the circular rail (16), the outer portion of the piston (6) is matched with the inner portion of the liquid collecting cavity (18), and a slurry conveying pipeline (7) formed in the piston (6) is communicated with the inner portion of the liquid collecting cavity (18).

4. A liquid supply and squeegee synchronously operated screen printing apparatus as claimed in claim 1, wherein: the inside of support frame (8) and the outside looks adaptation of movable block (12), the bottom of support frame (8) articulates there is telescopic link (15), electro-magnet (14) and contact area (17) circuit connection, contact area (17) divide into two parts, and partly fixed connection is in the inside of circular rail (16) right half portion, and another part fixed connection is in the periphery of the tip of cam (4).

5. A liquid supply and squeegee synchronously operated screen printing apparatus as claimed in claim 1, wherein: the top of the liquid collection cavity (18) is communicated with the middle of the frame body (1), a gap exists between the outside of the floating disc (19) and the inside of the middle of the frame body (1), and the inside of the top of the frame body (1) is matched with the outside of the trough frame (23).

6. A liquid supply and squeegee synchronously operated screen printing apparatus as claimed in claim 1, wherein: the slot frame (23) is divided into an upper part and a lower part, the upper half section of the slot frame (23) is a driving slot body, the lower half section of the slot frame is composed of a supporting rod and a plug body, and the connecting rod group (24) is composed of two mutually hinged connecting rods.

7. A liquid supply and squeegee synchronously operated screen printing apparatus as claimed in claim 1, wherein: the outside of communicating valve (25) and the inside looks adaptation of support body (1), the bottom of thick liquids box (27) is connected with the space in support body (1) middle part through communicating valve (25) liquid route.