CN205767979U - A kind of screen process press - Google Patents

Abstract

The utility model discloses a screen printing machine, which comprises a frame, a screen printing plate arranged on the frame, an elevating seat arranged on the The doctor blade located above the screen printing plate, the upper end of the doctor blade is hinged on the lifting seat, and the lifting seat is provided with a function for adjusting the rotation of the doctor blade to change the distance between the doctor blade and the doctor blade. An adjustment member for the angle formed by the screen printing plate. The utility model has the following advantages and effects: the scheme utilizes a new mechanical structure, adopts an adjusting part to adjust the rotation of the scraper to change the printing pressure of the scraper on the ink, adapts to inks of different viscosities, and can also adjust the amount of pushing ink to achieve The printing pressure can be adjusted, the ink adaptability is good, and the printing quality is stable.

Description

A screen printing machine

technical field

The utility model relates to the field of cosmetic production equipment, in particular to a screen printing machine.

Background technique

A screen printing machine is a machine that uses a screen printing plate to print, and is a type of printing machine. A screen printing machine is a machine for printing text and images, and is a general term for machines or equipment used to produce printed matter. The screen printing machine adopts a soft and elastic layout, which can not only print flat substrates, but also print curved circular surface substrates. In the production process of cosmetics, screen printing machines are often used to print cosmetic shells. Print text, patterns, etc. on the curved surface of the screen. When printing, the amount of ink passed through the screen is the amount of ink passing through the screen, and the unit is cm3/m2. In screen printing, the amount of ink transferred to the surface of the substrate depends on the amount of ink passed through the screen. The amount of ink passing through the screen is affected by various factors such as screen material, ink viscosity, and printing pressure.

The Chinese patent "Manual curved surface screen printing machine" with the notification number CN2764611Y discloses a manual curved surface screen printing machine, which includes a base plate with a lifting screw, a printing adjustment table, and a bracket, and an ink return plate on the bracket. And the outer frame whose height is adjusted by the screw structure and can be rotated on the bracket. The scraper frame is installed on the outer frame and the height of the scraper is adjusted by the screw structure. The outer frame is equipped with a sliding device and the outer frame. Sliding fit screen frame, the screen frame fixed by the pressure plate is set under the screen frame.

However, this manual curved screen printing machine has the following disadvantages: the squeegee descends to press the screen against the substrate to form a nip line. The extrusion force on the ink at a certain printing speed is a fixed value. The manual curved surface screen printing machine will inevitably use various inks with different viscosities during use. If the pressure is too small, the amount of ink on the substrate is insufficient. When using ink with low viscosity, the extrusion force of the scraper on the ink is too large, resulting in more ink on the substrate and uneven distribution in the pattern, resulting in printing effect not good.

Utility model content

The purpose of this utility model is to provide a screen printing machine, which has the effect of adjusting the printing pressure and using inks with different viscosities.

The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: a screen printing machine, comprising a frame, a screen printing plate arranged on the frame, Lifting seat, a doctor blade arranged on the lifting seat and above the screen printing plate, the upper end of the doctor blade is hinged on the lifting seat, and the lifting seat is provided with a The ink knife is rotated to change the adjusting member of the angle formed by the doctor blade and the screen printing plate.

By adopting the above-mentioned technical solution, when the screen printing machine is printing, the lifting seat descends to drive the squeegee down to abut against the screen printing plate, and the squeegee presses down on the screen on the screen printing plate, so that the screen and the screen are in contact with each other. The substrate forms a nip line, and the squeegee and the screen printing plate form a concave angle. When the squeegee is pushed forward, it generates a squeezing force on the ink at the concave corner, and the squeezing force is perpendicular to the contact between the squeegee and the ink. On the surface, the extrusion force forms a thrust to push the ink forward in the horizontal direction and a vertical downward printing pressure. Under the extrusion of the downward printing pressure, the ink leaks to the printing plate through the mesh on the screen printing plate. On the object, the entire printing is completed; when using ink with a high viscosity, adjust the rotation of the squeegee with the regulator to reduce the angle between the squeegee and the screen printing plate, and the extrusion force is decomposed into the horizontal direction. The driving force becomes smaller, and the printing pressure decomposed into the vertical direction becomes larger, thereby reducing the amount of ink driven by the squeegee and increasing the printing pressure, so that the ink with higher viscosity is squeezed through the screen at a higher printing pressure After the printing plate is printed on the surface of the substrate; when using ink with low viscosity, adjust the rotation of the squeegee with an adjustment member, increase the angle between the squeegee and the screen printing plate, and decompose the extrusion force to the horizontal direction The thrust of the thrust becomes larger, and the downward pressure in the vertical direction becomes smaller, and the printing pressure on the ink during printing is smaller, and the printing will not be excessive, so as to adjust the printing pressure and cooperate with inks of different viscosities to ensure proper printing. The over-ink amount of the screen can improve the printing effect on the substrate.

The utility model is further set as: the scraper is provided with splints distributed on both sides of the lifting seat, and the two sides of the lifting seat are provided with rotating shafts passing through the splints, and the rotating shafts are rotatably connected on the splint.

By adopting the above technical solution, the rotating shaft passes through the splint, and the splint on the ink scraper can rotate around the axis of the rotating shaft when the ink scraper is rotated.

The utility model is further configured as follows: the adjusting member is a bolt passing through the splint, and a plurality of threaded holes arranged on the side of the lifting seat along the circumference of the rotating shaft and used for threaded connection of the bolts.

By adopting the above-mentioned technical scheme, remove the adjusting bolt from the threaded hole, turn the scraper to drive the splint to rotate around the axis of the rotating shaft, and when the adjusting bolt on the splint is aligned with the threaded hole of the next gear, tighten the adjusting bolt at the In the threaded hole, the rotation of the squeegee is limited, thereby changing the angle formed by the squeegee and the screen printing plate.

The utility model is further configured as follows: the splint is provided with a limit hole for the adjustment bolt to pass through.

By adopting the above technical scheme, the adjusting bolt passes through the limit hole on the splint. When the adjusting bolt is tightened and threaded into the threaded hole, the head of the adjusting bolt is pressed against the end face of the splint, and the splint is fixed on the lifting seat. superior.

The utility model is further set as: the splint is provided with a through hole for the shaft to pass through; A plurality of limiting grooves surrounding and communicating with the through hole, and a lock nut screwed on the rotating shaft for fixing the position of the limiting block embedded in the limiting groove.

By adopting the above technical scheme, when adjusting the rotation of the ink scraper, unscrew the lock nut, slide the limit block along the axis of the rotating shaft, leave the limit groove, turn the ink scraper to rotate the ink scraper, and drive the The splint rotates so that the limit slot of the next gear on the splint is aligned with the limit block. At this time, the limit block is pushed to be embedded in the limit slot, and the splint is fixed on the shaft along the circumference of the shaft, and the lock nut is rotated , the lock nut is pressed against the end face of the limit block and the end face of the splint, and the limit block is fixed in the limit groove.

The utility model is further configured as follows: the outer wall of the rotating shaft is provided with a limit groove for sliding after the lower end of the limit block is embedded.

By adopting the above technical solution, the lower end of the limit block is embedded in the limit groove and slides along the axis of the rotating shaft. After being embedded in the limit groove, the rotating shaft and the splint are fixed. It is easy to operate during adjustment, and it will not be lost if it is always embedded in the limit groove.

The utility model is further configured as follows: the scraper includes a knife holder, and a scraper piece inserted into the lower end of the knife holder for contacting the screen printing plate, and the scraper is provided with a blade for the scraper. The positioning slot where the ink sheet is inserted, and the positioning bolt used to fix the ink scraping blade are provided through the side wall of the positioning slot from the outside.

By adopting the above technical scheme, the squeegee blade is plugged into the positioning groove and fixed with a positioning bolt, not only can flexibly use squeegee blades of different widths and sizes according to actual needs during use, but also can fine-tune the insertion after the squeegee rotates In the position of the squeegee in the positioning groove, make the lower end of the squeegee close to or away from the screen layout, so as to avoid touching the screen printing plate after turning the squeegee.

A further configuration of the utility model is that: the scraping blade is made of rubber.

By adopting the above technical solution, the scraping blade is made of rubber, and the material is relatively soft and wear-resistant, thereby reducing the abrasion of the screen printing plate.

A further configuration of the utility model is that: the frame is provided with a cylinder for driving the lifting seat to go up and down.

By adopting the above technical scheme, the lifting seat is driven to slide by the cylinder, the structure is simple, the maintenance is convenient, and the adjustment precision is high.

A further setting of the present invention is that: the screen printing plate includes a screen and a screen frame for installing the screen.

By adopting the above technical scheme, the screen frame is used to tighten the screen, and the squeegee presses down on the screen and the substrate to form a nip line for printing.

To sum up, the utility model has the following beneficial effects: the adjustment part is used to adjust the rotation of the ink scraper along the rotating shaft on the lifting seat, so as to adjust the angle formed by the ink scraper and the screen printing plate, and then change the printing effect of the ink during printing. Pressure, suitable for inks with different viscosities, avoiding excessive or insufficient ink during printing; secondly, by adjusting the angle between the squeegee and the screen printing plate, the amount of ink pushed by the squeegee can be adjusted to avoid ink accumulation, and the printing pressure can be adjusted to adapt to different Viscosity of the ink, to ensure the appropriate amount of ink over the screen, to achieve the effect of improving printing quality.

Description of drawings

Fig. 1 is the structural representation of embodiment 1;

Fig. 2 is the internal structure schematic diagram of embodiment 1;

Fig. 3 is the structural representation of the A part of embodiment 1;

Fig. 4 is a schematic diagram of the connection relationship between the lifting seat and the doctor blade of embodiment 1;

Fig. 5 is the structural representation of embodiment 2;

Fig. 6 is the structural representation of the B part of embodiment 2;

Fig. 7 is a schematic diagram of the connection relationship between the lifting seat and the doctor blade in the second embodiment.

In the figure: 1. frame; 2. screen printing plate; 21. screen; 22. screen frame; ; 411, through hole; 412, limit hole; 413, limit groove; 42, knife rest; 421, positioning groove; 422, positioning bolt; , threaded hole; 53, limit block; 54, lock nut; 6, cylinder.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail.

The specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. Those skilled in the art can make modifications to the embodiment without creative contribution as required after reading this description, but as long as the utility model All claims are protected by patent law.

Embodiment 1: a kind of screen printing machine, as shown in Figure 1 to Figure 3, comprises frame 1, the screen printing plate 2 that is arranged on the frame 1, the lifting seat 3 that is arranged on the screen printing plate 2 top And squeegee 4, the printing platform and cylinder 6 arranged under the screen printing plate 2, fix the substrate on the printing platform during printing, adjust the scraping knife 4 on the lifting seat 3 when the lifting seat 3 descends with the cylinder 6 Lower and press against the screen printing plate 2, so that the circular surface of the screen printing plate 2 and the substrate forms an embossing line. When the screen printing plate 2 slides horizontally, it drives the linked substrate to rotate, and the screen printing plate The ink on the screen printing plate 2 leaks onto the substrate through the mesh on the screen printing plate 2 under the extrusion of the doctor blade 4.

As shown in Figures 2 to 4, the lifting base 3 is slidingly arranged on the frame 1, and the frame 1 is provided with a plurality of guide posts, and the lifting base 3 is provided with guide holes for the guide posts to pass through, and the cylinder 6 is connected to On the lifting base 3, it is used to adjust the lifting base 3 to lift. Both sides of the lower end of the lifting seat 3 are provided with a rotating shaft 31, and the upper end of the scraper 4 is provided with a splint 41 clamped at both ends of the lifting seat 3. The splint 41 is provided with a through hole 411 for the rotating shaft 31 to pass through. The diameter of the through hole 411 is larger than that of the rotating shaft 31. diameter, so that the doctor blade 4 is hinged on the lifting seat 3 and can rotate around the axis of the rotating shaft 31.

As shown in Figures 3 to 4, the lifting seat 3 is also provided with an adjustment member 5 for adjusting the rotation and positioning of the doctor blade 4 along the axis of the rotating shaft 31, and is used to change the relationship between the lower end of the doctor blade 4 and the screen printing plate 2. Angle and then to change the printing pressure. The splint 41 is provided with a limit hole 412 , and the adjustment member 5 includes a plurality of threaded holes 52 arranged on the splint 41 along the circumference of the through hole 411 , and an adjusting bolt 51 threaded through the limit hole 412 and connected to the threaded hole 52 .

As shown in Figure 4, the doctor blade 4 includes a knife holder 42 and a ink scraper 43, the splint 41 is arranged on the knife holder 42, and the lower end of the knife holder 42 is provided with a positioning groove 421 for inserting the doctor blade 43. The positioning bolt 422 on the side wall of the positioning groove 421 , the tail of the positioning bolt 422 is located in the positioning groove 421 , and is used to fix the wiper blade 43 in the positioning groove 421 . Squeegee blade 43 is made of rubber.

As shown in FIG. 1 , the screen printing plate 2 includes a screen 21 containing a pattern mesh, and a screen frame 22 for tightening the screen 21 . There is a printing platform under the screen printing plate 2, and a clamping device for clamping the substrate is arranged on the printing platform, and the clamping device is linked to the screen printing plate 2 through a transmission device.

When adjusting, as shown in Figure 2 to Figure 4, rotate and loosen the adjusting bolt 51, rotate the ink knife along the axis of the rotating shaft 31, and drive the splint 41 on the ink scraper 4 to rotate, when the adjusting bolt 51 on the splint 41 is aligned with the lower When the threaded hole 52 of a gear is turned, the adjusting bolt 51 is rotated to tighten the adjusting bolt 51 in the threaded hole 52. The head of the adjusting bolt 51 is pressed against the end face of the splint 41, and the splint 41 is fixed on the lifting seat 3, and the ink is scraped. After the plate rotates, the angle formed by the screen printing plate 2 changes, so as to change the angle formed by the squeegee 4 and the screen printing plate 2.

Embodiment 2: A screen printing machine. The difference from Embodiment 1 is that, as shown in FIGS. The through hole 411 is circumferentially provided with a plurality of limiting grooves 413 on the splint 41 , one end of the limiting groove 413 is open and communicated with the through hole 411 , the outer wall of the rotating shaft 31 is also provided with external threads, and the adjusting member 5 also includes a threaded connection to the rotating shaft 31 Lock nut 54.

When adjusting, as shown in Figure 5 to Figure 7, turn and loosen the lock nut 54, slide the limit block 53 out of the limit groove 413 along the axis of the rotating shaft 31, rotate the ink scraper 4, the ink scraper 4 and the bottom The angle formed by the screen printing plate 2 changes, and the squeegee 4 drives the splint 41 to rotate, so that the limit slots 413 of different gears on the splint 41 are aligned with the limit block 53, and then the limit block 53 is slid into the limit block. In the bit groove 413, the end face of the stop block 53 is on the same plane as the end face of the clamping plate 41, and the lock nut 54 is tightened, and the end face of the lock nut 54 is pressed against the end face of the splint 41 and the end face of the stop block 53 at the same time, and the stop block 53 Fix on the splint 41, and then lock the angle formed by the squeegee 4 and the screen printing plate 2.

Claims (10)

1. A screen printing machine, comprising a frame (1), a screen printing plate (2) arranged on the frame (1), a lifting seat that slides and is arranged on the frame (1) (3), the scraper (4) arranged on the lifting seat (3) and above the screen printing plate (2), is characterized in that: the upper end of the scraper (4) is hinged to the On the lifting seat (3), the lifting seat (3) is provided with a function for adjusting the rotation of the doctor blade (4) to change the position between the doctor blade (4) and the screen printing plate (2). Angled adjuster (5). 2. A screen printing machine according to claim 1, characterized in that: said scraper (4) is provided with splints (41) distributed on both sides of said lifting seat (3), said Both sides of the lifting seat (3) are provided with rotating shafts (31) passing through the splint (41), and the rotating shaft (31) is rotatably connected to the splint (41). 3. A screen printing machine according to claim 2, characterized in that: the adjustment member (5) is an adjustment bolt (51) passing through the splint (41), along the shaft (31) ) a plurality of threaded holes (52) circumferentially arranged on the side of the lifting seat (3) and used for threaded connection of the adjusting bolts (51). 4. A screen printing machine according to claim 3, characterized in that: the splint (41) is provided with a limiting hole (412) for the bolt to pass through. 5. A screen printing machine according to claim 2, characterized in that: the splint (41) is provided with a through hole (411) for the shaft (31) to pass through, and the adjusting member ( 5) including a limit block (53) axially slidably arranged on the rotating shaft (31), a plurality of limit blocks (53) circumferentially arranged around the through hole (411) and connected to the through hole (411) The position slot (413), and the lock nut (54) threadedly connected to the rotating shaft (31) for fixing the position of the limit block (53) embedded in the limit slot (413). 6. A screen printing machine according to claim 5, characterized in that: the outer wall of the rotating shaft (31) is provided with a limit groove (413) for the lower end of the limit block (53) to slip after being embedded . 7. A screen printing machine according to claim 4 or 6, characterized in that: the doctor blade (4) includes a knife rest (42), which is plugged into the lower end of the knife rest (42) for The squeegee (43) that contacts the screen printing plate (2) is provided with a positioning groove (421) for the insertion of the squeegee (43) on the knife holder (42), and the squeegee (43) is inserted from the outside. The positioning bolt (422) passing through the side wall of the positioning groove (421) is used to fix the wiper blade (43). 8. A screen printing machine according to claim 7, characterized in that: the squeegee blade (43) is made of rubber. 9 . A screen printing machine according to claim 8 , characterized in that: the frame ( 1 ) is provided with a cylinder ( 6 ) for driving the lifting seat ( 3 ) up and down. 10 . 10. A kind of screen printing machine according to claim 9, characterized in that: the screen printing plate (2) comprises a screen (21), a screen frame (21) for installing the screen (21) twenty two).