CN113978112A

CN113978112A - Screen printing system

Info

Publication number: CN113978112A
Application number: CN202111387395.1A
Authority: CN
Inventors: 舒一苒; 陈启
Original assignee: Shu Yiran
Current assignee: Shu Yiran
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-01-28

Abstract

The invention relates to the technical field of printing, in particular to a screen printing system which comprises an underframe and a printing support frame, wherein the printing support frame is movably arranged at the upper end of the underframe, the outer surface of the left side of the printing support frame is connected with the outer surface of the left side of the underframe through a hinge, an object placing table is fixedly arranged on the outer surface of the upper end of the underframe, a printing screen is embedded in the bottom of the inner surface of the printing support frame, a driving mechanism is movably arranged at the upper end of the printing support frame and is arranged for uniformly discharging ink and printing, the working efficiency is improved, the driving mechanism comprises a square frame, a roller, a gear, a scraper and a push rod, and the square frame is movably arranged at the position of the printing support frame. The automatic ink-jet printing device can automatically and uniformly jet ink in a proper amount, reduces the procedure of manually extruding ink and the waste of ink, ensures the regular cleaning of the scraper, reduces the condition of uneven coating caused by the agglomeration of the bottom of the scraper, and improves the printing quality and efficiency.

Description

Screen printing system

Technical Field

The invention relates to the technical field of printing, in particular to a screen printing system.

Background

The silk screen printing refers to that a silk screen is used as a plate base, and a silk screen printing plate with pictures and texts is manufactured by a photosensitive plate making method. The screen printing is composed of five major elements, namely a screen printing plate, a scraper, ink, a printing table and a printing stock. The basic principle that the meshes of the image-text part and the non-image-text part of the screen printing plate are permeable to ink and impermeable to ink is utilized to print. When printing, ink is poured into one end of the screen printing plate, a scraper plate is used for applying a certain pressure to the ink position on the screen printing plate, meanwhile, the scraper plate moves towards the other end of the screen printing plate at a constant speed, and the ink is extruded onto a printing stock from meshes of the image-text part by the scraper plate in the moving process.

The small-sized manual screen printing machine usually needs to be pushed by hands manually to print, ink needs to be added to the surface of a printing screen in a discontinuous manner in the printing process, the extruding amount of the ink is more or less in the manual adding process, the ink can be accumulated at one position, and uneven printing can be caused when a scraper is used for scraping; in addition, after the scraper is used for many times, the water content of ink stains on the scraper is reduced in the external environment, nodules are attached to the ink stains, and if the ink stains are not cleaned in time, the printing quality of subsequent ink is affected.

To this end, a screen printing system is proposed.

Disclosure of Invention

The invention aims to provide a screen printing system, which can automatically and uniformly jet ink with proper amount, reduce the procedure of manually squeezing ink and waste of ink, ensure the regular cleaning of a scraper, reduce the condition of uneven coating caused by agglomeration at the bottom of the scraper and improve the printing quality and efficiency so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a screen printing system, includes that chassis and printing hold in the palm the frame, printing holds in the palm frame movable mounting in the chassis upper end position, and prints and hold in the palm through hinged joint between frame left side surface and the chassis left side surface, chassis upper end fixed surface installs and puts the thing platform, the printing holds in the palm the embedded printing screen that installs in the bottom position of frame internal surface, printing holds in the palm frame upper end movable mounting has actuating mechanism, sets up actuating mechanism's aim at evenly goes out china ink and printing, improves work efficiency.

Preferably, the driving mechanism comprises a clip frame, a roller, gears, a scraper and a push rod, the clip frame is movably arranged at the position of the printing support frame, the outer surfaces of the front ends of the clip frame and the roller are connected through a hinge, the rear end of the clip frame extends to the position 3cm to 5cm away from the rear end of the printing support frame, the left side and the right side of the inner surface of the clip frame are respectively provided with a first sliding groove, the roller is transversely arranged at the front end position inside the clip frame, the number of the gears is two, the two gears are respectively rotatably connected at the left side and the right side of the roller and are also slidably connected inside the first sliding groove, an extrusion component is arranged between the left gear and the right gear through a one-way bearing and penetrates through the inside of the roller to be close to the upper end position, the inside of the roller is provided with an ink jet component near the lower end, and the scraper is fixedly arranged at the lower end of the roller, and the scraper blade is communicated with the ink jet assembly, the push rod is fixedly arranged in the middle of the outer surface of the front end of the roller, and the push rod penetrates through the outer surface of the front end of the clip frame.

Preferably, a second sliding groove is formed in the position, close to the front end of the bottom, of the inner surface of the first sliding groove, the length of the second sliding groove is one fourth of that of the first sliding groove, tooth blocks are fixedly mounted inside the second sliding groove at equal intervals, and the outer surface of the upper end of each tooth block and the inner surface of the first sliding groove are located on the same plane.

Preferably, it is relative about extrusion subassembly and inkjet subassembly are, extrusion subassembly includes drum, metal sheet, counter weight ball and haulage rope, the arc breach has been seted up to drum upper end surface, and is close to the upper end position about the internal surface of drum and has all seted up the arc wall, the metal sheet is high tenacity metal material and its middle upper end position has seted up the breach of buckling, the equal fixed mounting in side position has the spin about the metal sheet, and spin sliding connection is at the inside lower extreme position of arc wall, counter weight ball fixed mounting is at the intermediate position of metal sheet lower extreme surface, and fixedly connected with haulage rope between counter weight ball and the drum internal surface.

Preferably, the inkjet subassembly is including supporting clamp plate, rubber bag and discharging pipe, rubber bag fixed mounting is in the lower extreme intermediate position of cylinder internal surface, and supports the upper end position of clamp plate fixed mounting at the rubber bag, rubber bag lower extreme surface equidistance fixed mounting has the discharging pipe, and inside the discharging pipe extends to the scraper blade, discharging pipe lower extreme mouth of pipe is oblique mouthful structural design, and the mouth of pipe is linked together with the outside, the length of scraper blade is the same with the width of printing screen, and the equal fixed mounting in the side of controlling of scraper blade has to support the piece.

Preferably, the left side position and the right side position of the inner surface of the printing support frame are both provided with a third sliding groove, the support block is connected to the front end position of the three inner parts of the sliding grooves in a sliding mode, a spring group is fixedly connected between the support block and the third sliding groove, the position, close to the rear end of the printing screen, of the inner surface of the printing support frame is provided with a groove, and cleaning assemblies are movably mounted in the groove at equal intervals.

Preferably, the cleaning assembly comprises a triangular block and a hinge ball, the hinge ball is fixedly mounted on the outer surface of the lower end of the triangular block, the lower end of the hinge ball is hinged to the bottom of the groove, the upper end of the triangular block penetrates through the groove and extends to the upper end of the groove by 2 cm-3 cm, and rough surfaces are arranged on the outer surfaces of the front end and the rear end of the triangular block.

Preferably, an elastic band is fixedly connected between the two adjacent triangular blocks at a position close to the lower end, and the two triangular blocks close to the left side and the right side are fixedly connected with the inner wall of the groove through the elastic band.

Compared with the prior art, the invention has the beneficial effects that:

1. by arranging the limiting mechanism, the ink can be printed only by pushing with one hand, and the extrusion component can be assisted to turn over in the printing process so as to extrude the ink jet component to realize automatic and uniform ink jet and improve the working efficiency;

2. through holding in the palm the inside clean subassembly that sets up of frame in printing, promote the scraper blade through the push rod and move backward, the scraper blade loops through the upper end of printing screen, and the recess upper end can be introduced to the region that the scraper blade passes through the printing screen until the scraper blade, and the scraper blade bumps with three hornblocks each other and touches, and scraper blade rear end surface rubs with the front end rough surface of three hornblocks each other, alright scrape the regional remaining printing ink stain of china ink with the scraper blade and scrape and get off to this improves the cleanness of the bottom of scraper blade, improves printing effect and printing quality.

Drawings

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

FIG. 2 is a left side elevation view of the present invention;

FIG. 3 is a cross-sectional view of the drum and gear combination of the present invention;

FIG. 4 is a left side cross-sectional view of the drum and its internal mechanism of the present invention;

FIG. 5 is a cross-sectional view of a compression assembly of the present invention;

FIG. 6 is a top cross-sectional view of a printing tray of the present invention;

fig. 7 is an enlarged view of a in fig. 2 according to the present invention.

In the figure: 1. a chassis; 11. a placing table; 2. printing a support frame; 21. printing a screen; 3. a drive mechanism; 31. a clip frame; 311. a first sliding chute; 312. a second chute; 313. a tooth block; 32. a drum; 33. a gear; 34. a squeegee; 35. a push rod; 4. an extrusion assembly; 41. a cylinder; 411. an arc-shaped slot; 42. a metal plate; 421. rolling a ball; 43. a counterweight ball; 44. a hauling rope; 5. an ink jet assembly; 51. pressing the plate; 52. a rubber bladder; 53. a discharge pipe; 54. a resisting block; 6. a third chute; 61. a spring set; 62. a groove; 7. a cleaning assembly; 71. a triangular block; 72. hinging the ball; 73. an elastic band.

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 to 7, the present invention provides a technical solution:

the utility model provides a screen printing system, as shown in figure 1, holds in the palm frame 2 including chassis 1 and printing, 2 movable mounting of printing support frame are in 1 upper end position of chassis, and pass through hinged joint between 2 left sides surfaces of printing support frame and the 1 left side surface of chassis, 1 upper end fixed surface of chassis installs and puts thing platform 11, the embedded printing net 21 of installing in the bottom position of 2 internal surfaces of printing support frame, 2 upper end movable mounting of printing support frame have actuating mechanism 3, set up actuating mechanism 3's aim at evenly goes out china ink and printing, improves work efficiency.

When the printing support frame 2 works, the printing support frame 2 is firstly turned leftwards by one hundred eighty degrees, the printing support frame 2 is separated from the upper end of the bottom frame 1, then paper to be printed can be flatly laid on the object placing table 11, then the printing support frame 2 is turned to the original position, the printing support frame 2 is positioned at the upper end of the bottom frame 1, the paper is pressed between the printing screen 21 and the object placing table 11, then the driving mechanism 3 can be pushed, the driving mechanism 3 can uniformly discharge ink in the moving process and simultaneously scrape and rub the surface of the printing screen 21, so that the ink can be uniformly coated on the paper through the printing screen 21, after the paper is printed, the printing support frame 2 can be turned again, and the printed paper can be taken down.

As an embodiment of the present invention, as shown in fig. 2, the driving mechanism 3 includes a clip frame 31, a roller 32, a gear 33, a scraper 34 and a push rod 35, the clip frame 31 is movably installed at the position of the printing support frame 2, and the outer surfaces of the front ends of the clip frame and the printing support frame are connected by a hinge, the rear end of the clip frame 31 extends to the position 3cm to 5cm from the rear end of the printing support frame 2, the left and right sides of the inner surface of the clip frame 31 are both provided with a first sliding slot 311, the roller 32 is transversely placed at the front end position inside the clip frame 31, the number of the gear 33 is two, the two sets of the gear 33 are respectively rotatably connected at the left and right sides of the roller 32, and the gear 33 is also slidably connected inside the first sliding slot 311, the extrusion component 4 is installed between the two sets of the gear 33 through a one-way bearing, and the extrusion component 4 penetrates through the inside the roller 32 near the upper end position, the ink jet module 5 is arranged at a position close to the lower end in the roller 32, the scraper 34 is fixedly installed at the lower end of the roller 32, the scraper 34 is communicated with the ink jet module 5, the push rod 35 is fixedly installed at the middle position of the outer surface of the front end of the roller 32, and the push rod 35 penetrates through the outer surface of the front end of the square-shaped frame 31.

During operation, after the paper is injectd completely, accessible promotion push rod 35, push rod 35 can make cylinder 32 remove in returning the shape frame 31 inside, and the gear 33 of cylinder 32 both sides slides in the inside of a 311 of spout, and scraper blade 34 removes and contacts with printing screen 21 along with cylinder 32, can evenly scribble printing ink on printing screen 21, and rethread printing screen 21 scribbles printing ink on the paper, through the mode printing paper that promotes, and only need the one-hand operation can, improve work efficiency.

As an embodiment of the present invention, as shown in fig. 2, a second sliding slot 312 is disposed at a position, close to the front end of the bottom, of the inner surface of the first sliding slot 311, the length of the second sliding slot 312 is one fourth of the length of the first sliding slot 311, tooth blocks 313 are fixedly mounted in the second sliding slot 312 at equal intervals, and an outer surface of an upper end of the tooth block 313 and the inner surface of the first sliding slot 311 are located on the same plane.

During operation, when the driving mechanism 3 is pushed to move backwards, the gear 33 firstly slides into the second sliding groove 312, the gear 33 is meshed with the tooth block 313 and is pushed further backwards, the gear 33 rotates under the action of the tooth block 313, the extrusion component 4 connected between the two groups of gears 33 rotates along with the gear 33 until the gear 33 rotates to the rear end of the second sliding groove 312 and approaches the inside of the first sliding groove 311, and the extrusion component 4 turns over one hundred eighty degrees. The gear 33 can assist the extrusion assembly 4 to turn over so as to extrude the ink jet assembly 5 to automatically jet ink.

As an embodiment of the present invention, as shown in fig. 4, 5 and 6, the extrusion assembly 4 and the inkjet assembly 5 are opposite to each other in a vertical direction, the extrusion assembly 4 includes a cylinder 41, a metal plate 42, a counterweight ball 43 and a traction rope 44, an arc notch is formed in an outer surface of an upper end of the cylinder 41, arc grooves 411 are formed in positions on left and right sides of an inner surface of the cylinder 41 near an upper end, the metal plate 42 is made of a high-toughness metal material, a bending notch is formed in an upper end position in the middle of the metal plate 42, rolling balls 421 are fixedly mounted on left and right sides of the metal plate 42, the rolling balls 421 are slidably connected to a lower end position in the arc grooves 411, the counterweight ball 43 is fixedly mounted at a middle position of an outer surface of a lower end of the metal plate 42, and the traction rope 44 is fixedly connected between the counterweight ball 43 and the inner surface of the cylinder 41.

When the ink jet printer works, when the gear 33 rotates to the rear end of the second sliding groove 312 and approaches to the inside of the first sliding groove 311, the extrusion assembly 4 turns over by one hundred eighty degrees, the arc-shaped opening of the cylinder 41 faces downwards, the internal structure of the cylinder also turns over by one hundred eighty degrees, the metal plate 42 is positioned at the lower end of the counterweight ball 43, the metal plate 42 is pressed downwards by the gravity of the counterweight ball 43, the traction rope 44 is lengthened, the rolling balls 421 at the two sides of the metal plate 42 slide downwards along the arc-shaped groove 411, the middle position of the metal plate 42 is bent due to the largest stress, the bent position of the metal plate 42 penetrates through the arc-shaped opening and presses the ink jet assembly 5 at the lower end, so that the ink jet assembly 5 is driven to rotate downwards for ink jet, after a proper amount of ink is jetted, the push rod 35 can be continuously pushed, the gear 33 is continuously meshed with the residual tooth blocks 313 inside the second sliding groove 312 for transmission, the arc-shaped notch of the cylinder 41 faces upwards, the mechanisms inside are all returned, the extrusion assembly 4 stops pressing the ink jet assembly 5, the ink can not be ejected until the gear 33 normally slides to the inside of the first sliding groove 311, and the extruded ink can be uniformly spread by the scraper 34, so that the extrusion assembly 4 can not start to move only when the gear 33 rotates to the inside of the first sliding groove 33 in the second sliding groove 312 through the design of the one-way bearing between the extrusion assembly 4 and the gear 33. The structure can realize automatic ink jet and reduce the manual ink squeezing process.

As an embodiment of the present invention, as shown in fig. 4, the inkjet assembly 5 includes a pressing plate 51, a rubber bag 52 and a discharging pipe 53, the rubber bag 52 is fixedly installed at a middle position of a lower end of an inner surface of the drum 32, the pressing plate 51 is fixedly installed at an upper end position of the rubber bag 52, the discharging pipe 53 is fixedly installed on an outer surface of a lower end of the rubber bag 52 at equal intervals, the discharging pipe 53 extends into the scraper 34, a pipe orifice at a lower end of the discharging pipe 53 is designed in an oblique-mouth structure, the pipe orifice is communicated with the outside, a length of the scraper 34 is the same as a width of the printing screen 21, and a pressing block 54 is fixedly installed on each of left and right sides of the scraper 34.

During operation, when extrusion subassembly 4 extrudees downwards, metal sheet 42 is folding and the conflict is to pressing plate 51 downwards, presses plate 51 and receives the conflict and extrudees rubber bag 52 downwards, and the even downflow of the printing ink accessible pipe wall of multiunit discharging pipe 53 and the plate body of scraper blade 34 of rubber bag 52 inside to it causes the condition emergence that printing ink piles up a department to reduce artifical crowded printing ink.

As an embodiment of the present invention, as shown in fig. 6 and 7, sliding grooves three 6 are formed in both left and right side positions of the inner surface of the printing support frame 2, the abutting block 54 is slidably connected to a front end position inside the sliding grooves three 6, a spring set 61 is fixedly connected between the abutting block 54 and the sliding grooves three 6, a groove 62 is formed in a position, close to the rear end of the printing screen 21, of the inner surface of the printing support frame 2, and the cleaning assemblies 7 are movably mounted inside the groove 62 at equal intervals.

When the printing screen 21 back-moving device works, the push rod 35 pushes the scraper 34 to move backwards, the scraper 34 sequentially passes through the upper end of the printing screen 21, the abutting block 54 slides backwards along with the scraper 34 in the third sliding groove 6, meanwhile, the spring group 61 is pushed by the abutting block 54 to be compressed, the abutting block 54 can improve the moving stability of the scraper 34, meanwhile, after the scraping of the scraper 34 on the surface of the printing screen 21 is finished, the push rod 35 is appropriately loosened, the scraper 34 loses thrust and rebounds under the elastic force of the spring group 61, the scraper 34 drives the rebounds of the whole driving mechanism 3 to the junction of the first sliding groove 311 and the second sliding groove 312, and in the process of back-moving of the scraper 34, redundant ink can be rubbed back and spread on the surface of the printing screen 21 again, so that the surface of the printing screen 21 can be kept moist and the ink can be spread more uniformly.

As an embodiment of the present invention, as shown in fig. 7, the cleaning assembly 7 includes a triangular block 71 and a hinge ball 72, the hinge ball 72 is fixedly installed on an outer surface of a lower end of the triangular block 71, a lower end of the hinge ball 72 is hinged to a bottom of the groove 62, an upper end of the triangular block 71 penetrates and extends to a position 2cm to 3cm above the upper end of the groove 62, and outer surfaces of front and rear ends of the triangular block 71 are provided with rough surfaces.

When the scraper 34 moves in the area exceeding the groove 62, the spring unit 61 rebounds under the action of the spring, and the other side end face of the scraper 34 rubs against the triangular block 71 to clean, so that the bottom of the scraper 34 is cleaned, and the printing effect is improved.

As an embodiment of the present invention, as shown in fig. 7, an elastic band 73 is fixedly connected between two adjacent triangular blocks 71 near the lower end, and the two triangular blocks 71 near the left and right sides are also fixedly connected with the inner wall of the groove 62 through the elastic band 73.

When the ink-jet printing ink box works, after the triangular block 71 is abutted by the scraper 34, the triangular block 71 swings back and forth under the action of the hinge ball 72, the elastic belt 73 can assist the triangular block 71 to return to the original position quickly, and meanwhile, ink falling off due to friction of two sides of the triangular block 71 is soaked on the upper end of the elastic belt 73.

The working principle is as follows: when the printing support frame 2 is turned leftwards by one hundred eighty degrees, the printing support frame 2 is separated from the upper end of the bottom frame 1, then paper to be printed can be flatly laid on the object placing table 11, then the printing support frame 2 is turned to the original position, the printing support frame 2 is positioned at the upper end of the bottom frame 1, the paper is pressed between the printing screen 21 and the object placing table 11, the push rod 35 is pushed, the roller 32 can be driven to move in the square frame 31 by the push rod 35, the gear 33 slides to the inside of the sliding groove II 312 firstly, the gear 33 is meshed with the gear block 313 and continues to be pushed backwards, the gear 33 rotates under the action of the gear block 313, the extrusion component 4 connected between the two groups of gears 33 rotates along with the gear until the gear 33 rotates to the rear end of the sliding groove II 312 and approaches to the inside of the sliding groove I311, after the extrusion component 4 is turned over by one hundred eighty degrees, the arc-shaped opening of the cylinder 41 faces downwards, the internal structure of the extrusion component also turns over by one hundred eighty degrees, the metal plate 42 is located at the lower end of the counterweight ball 43, the metal plate 42 is pressed downwards by the gravity of the counterweight ball 43, the pulling rope 44 is lengthened, the rolling balls 421 at the two sides of the metal plate 42 slide downwards along the arc-shaped groove 411, the middle position of the metal plate 42 is bent due to the largest stress, the bent position of the metal plate 42 penetrates through the arc-shaped opening and presses against the ink jet module 5 at the lower end, when the extrusion module 4 extrudes downwards, the metal plate 42 is folded and props against the pressing plate 51 downwards, the pressing plate 51 is propped to extrude the rubber bag 52 downwards, the ink in the rubber bag 52 can uniformly flow downwards through the pipe walls of the plurality of groups of discharging pipes 53 and the plate body of the scraping plate 34, the scraping plate 34 is pushed to move backwards by the push rod 35, the scraping plate 34 sequentially passes through the upper end of the printing screen 21, printing can be performed, after the paper is printed, the printing support frame 2 can be turned over again, the printed paper can be taken down, when the ink accumulated at the bottom of the scraping plate 34 is too much, the push rod 35 can push the scraper 34 to move backwards, the scraper 34 can pass through the upper end of the printing screen 21 in sequence until the scraper 34 passes through the area of the printing screen 21 and can be introduced into the upper end of the groove 62, the scraper 34 and the triangular block 71 touch each other, the outer surface of the rear end of the scraper 34 and the rough surface of the front end of the triangular block 71 rub each other, and then residual ink spots in the ink scraping area of the scraper 34 can be scraped.

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. A screen printing system comprising a base frame (1) and a printing tray frame (2), characterized in that: printing holds in the palm frame (2) movable mounting in chassis (1) upper end position, and prints and hold in the palm through hinged joint between frame (2) left side surface and chassis (1) left side surface, chassis (1) upper end surface fixed mounting has puts thing platform (11), the bottom position embedded installation of printing support frame (2) internal surface has printing screen (21), printing holds in the palm frame (2) upper end movable mounting has actuating mechanism (3).

2. A screen printing system according to claim 1, wherein: the driving mechanism (3) comprises a clip frame (31), a roller (32), gears (33), a scraper (34) and a push rod (35), the clip frame (31) is movably arranged at the position of the printing support frame (2), the outer surfaces of the front ends of the clip frame and the roller are connected through a hinge, the rear end of the clip frame (31) extends to the position 3cm to 5cm away from the rear end of the printing support frame (2), sliding grooves I (311) are respectively arranged at the left side and the right side of the inner surface of the clip frame (31), the roller (32) is transversely arranged at the front end position inside the clip frame (31), the gears (33) are in two groups, the two groups of gears (33) are respectively rotatably connected at the left side and the right side of the roller (32), the gears (33) are also slidably connected inside the sliding grooves I (311), an extrusion assembly (4) is arranged between the left group of gears (33) and the right group of gears through a one-way bearing, and the extrusion assembly (4) penetrates through the inner part of the roller (32) and is close to the upper end, the inner part of the roller (32) and the lower end are provided with an ink jet assembly (5), the scraper (34) is fixedly installed at the lower end of the roller (32), the scraper (34) is communicated with the ink jet assembly (5), the push rod (35) is fixedly installed at the middle position of the outer surface of the front end of the roller (32), and the push rod (35) penetrates through the outer surface of the front end of the square-shaped frame (31).

3. A screen printing system according to claim 2, wherein: the inner surface of the first sliding groove (311) is provided with a second sliding groove (312) close to the front end of the bottom, the length of the second sliding groove (312) is one fourth of that of the first sliding groove (311), the inside of the second sliding groove (312) is fixedly provided with tooth blocks (313) at equal intervals, and the outer surface of the upper end of each tooth block (313) and the inner surface of the first sliding groove (311) are located on the same plane.

4. A screen printing system according to claim 2, wherein: it is relative about extrusion subassembly (4) is with inkjet subassembly (5), extrusion subassembly (4) include drum (41), metal sheet (42), counter weight ball (43) and haulage rope (44), the arc breach has been seted up to drum (41) upper end surface, and is close to the upper end position about the internal surface of drum (41) and has all seted up arc wall (411), metal sheet (42) have been seted up the breach of buckling for high tenacity metal material and its middle upper end position, the equal fixed mounting in side position has spin (421) about metal sheet (42), and spin (421) sliding connection is in the inside lower extreme position of arc wall (411), counter weight ball (43) fixed mounting is in the intermediate position of metal sheet (42) lower extreme surface, and fixedly connected with haulage rope (44) between counter weight ball (43) and drum (41) internal surface.

5. A screen printing system according to claim 2, wherein: inkjet subassembly (5) are including supporting clamp plate (51), rubber bag (52) and discharging pipe (53), rubber bag (52) fixed mounting is in the lower extreme intermediate position of cylinder (32) internal surface, and supports clamp plate (51) fixed mounting in the upper end position of rubber bag (52), rubber bag (52) lower extreme surface equidistance fixed mounting has discharging pipe (53), and inside discharging pipe (53) extend to scraper blade (34), discharging pipe (53) lower extreme mouth of pipe is oblique mouthful structural design, and the mouth of pipe is linked together with the outside, the length of scraper blade (34) is the same with the width of printing net (21), and the equal fixed mounting in the left and right sides of scraper blade (34) supports piece (54).

6. A screen printing system according to claim 1, wherein: the printing support frame is characterized in that the left side and the right side of the inner surface of the printing support frame (2) are respectively provided with a third sliding groove (6), a support block (54) is slidably connected to the front end of the inner part of the third sliding groove (6), a spring group (61) is fixedly connected between the support block (54) and the third sliding groove (6), a groove (62) is formed in the position, close to the rear end of the printing screen (21), of the inner surface of the printing support frame (2), and cleaning assemblies (7) are movably mounted in the inner part of the groove (62) at equal intervals.

7. A screen printing system as claimed in claim 6, wherein: clean subassembly (7) include triangle block (71) and hinge ball (72), hinge ball (72) fixed mounting is in the lower extreme surface of triangle block (71), and the lower extreme of hinge ball (72) articulates the bottom in recess (62), the upper end of triangle block (71) runs through and extends to recess (62) upper end 2cm to 3cm department, triangle block (71) front and back end surface all is provided with the mat face.

8. A screen printing system according to claim 7, wherein: an elastic belt (73) is fixedly connected between the two adjacent triangular blocks (71) close to the lower end, and the two triangular blocks (71) close to the left side and the right side are fixedly connected with the inner wall of the groove (62) through the elastic belt (73).