CN111391475A - Linear flowing exposure device for printing screen printing plate - Google Patents

Abstract

The invention relates to a linear flowing exposure device for a printing screen printing plate, which comprises an exposure rack, wherein an exposure table is arranged on the exposure rack, a driven roller is arranged on one side of the exposure rack, a driving roller is arranged on the other side of the exposure rack, an aluminum conveying belt is arranged between the driving roller and the driven roller and is arranged above the exposure table; a stepping motor is arranged at the side part of the exposure frame, a driving shaft is arranged at the front part of the stepping motor, and the driving shaft is arranged at the axial position of the driving roller; a movable plate is arranged at the lower part of the aluminum conveying belt, the movable plate is arranged above the exposure platform, and an ultraviolet lamp exposure mechanism and an electrothermal fusion mechanism are arranged on the bottom surface of the movable plate; the top of the exposure frame is provided with a power supply and a temperature controller, the ultraviolet lamp exposure mechanism comprises a lamp housing, an ultraviolet lamp tube is arranged in the lamp housing, and the ultraviolet lamp tube is connected with the power supply through a first cable. The invention carries out centralized exposure on the part to be exposed on the printing silk screen, thereby greatly improving the exposure efficiency.

Description

A printing screen printing plate linear flow exposure device

technical field

The invention relates to an optical device, in particular to a linear flow exposure device for a printing screen printing plate.

Background technique

Screen printing consists of five elements, namely screen printing plate, squeegee, ink, printing table and substrate. The basic principle of screen printing is to use the basic principle that the mesh of the graphic part of the screen printing plate is transparent to the ink, and the mesh of the non-graphic part is impermeable to the ink. When printing, pour ink on one end of the screen printing plate, apply a certain pressure to the ink part of the screen printing plate with a scraper, and move to the other end of the screen printing plate at the same time. The ink is squeezed onto the substrate by the scraper from the mesh of the graphic part during the movement. Due to the viscosity of the ink, the imprint is fixed within a certain range. During the printing process, the squeegee is always in line contact with the screen printing plate and the substrate, and the contact line moves with the movement of the squeegee. A certain gap is maintained between them, so that the screen printing plate during printing generates a reaction force to the squeegee through its own tension. This reaction force is called rebound force. Due to the effect of resilience, the screen printing plate and the substrate are only in moving line contact, while other parts of the screen printing plate and the substrate are separated. The ink and the screen are broken, which ensures the printing dimensional accuracy and avoids smudging the substrate. When the squeegee scrapes the entire layout and lifts, the screen printing plate is also lifted, and the ink is gently scraped back to the original position. So far it is a printing trip. Screen printing is to stretch silk fabric, synthetic fiber fabric or metal mesh on the screen frame, and use the method of hand-carved paint film or photochemical plate making to make screen printing plate. Modern screen printing technology uses photosensitive materials to make screen printing plates, oil paintings, prints, posters, business cards, binding covers, commodity packaging, commodity signs, printing and dyeing textiles, glass and metal plane carriers, etc. The existing printing screen printing plates have inaccurate positioning and installation, inconvenient exposure operation for the printing screen printing plates, and low efficiency of concentrated exposure of local exposure parts on the printing screen printing plates.

SUMMARY OF THE INVENTION

The purpose of the present invention is to aim at the defects and deficiencies of the prior art, to provide a kind of ultraviolet exposure for the printing screen printing plate, and hot-melt exposure treatment for the printing plate; It is a linear flow exposure device for printing screen printing plates, which is used for centralized exposure of the parts to be exposed on the screen, which greatly improves the efficiency of exposure.

For achieving the above object, the technical scheme adopted in the present invention is:

A linear flow exposure device for printing screen printing plates comprises an exposure frame, an exposure table is arranged on the exposure frame, a driven roller is arranged on one side of the exposure frame, and a driving roller is arranged at the other side of the exposure frame, A conveying aluminum belt is arranged between the driving drum and the driven drum, and the conveying aluminum belt is installed above the exposure table; the side of the exposure frame is provided with a stepping motor, and the front of the stepping motor is provided with a drive shaft, and the drive shaft It is installed at the axial position of the driving roller; the lower part of the conveying aluminum belt is provided with a moving plate, which is installed above the exposure table, and the bottom surface of the moving plate is provided with a UV lamp exposure mechanism and an electrothermal melting mechanism; the top of the exposure frame is provided with The power supply and the temperature controller, the ultraviolet lamp exposure mechanism includes a lamp shell, and the ultraviolet lamp tube is installed in the lamp shell, and the ultraviolet lamp tube and the power supply are connected by a first cable; the electrothermal melting mechanism includes a pair of metal tubes arranged side by side, the metal tube There is a helical heating wire inside, and the helical heating wire has elasticity; a moving plug is installed in the metal tube, and the outer peripheral surface of the moving plug is provided with a high temperature resistant piston, and the high temperature resistant piston slides along the axial direction of the metal tube; One end of the heating wire is fixed in one end of the metal tube, the other end of the heating wire is connected with the moving plug, the other end of the metal tube is provided with a guide tube, the guide tube is sleeved with a moving shaft, and the inner end of the moving shaft is connected with the moving plug, and the moving The outer end of the shaft is provided with a push-pull ring.

Further, the upper part of the conveying aluminum belt is provided with a traction plate, the middle part of the traction plate is provided with a slot, the first cable and the second cable pass through the slot, and both sides of the traction plate are provided with parallel arranged. The guide shaft is sleeved with a sliding pipe, and a traction shaft is arranged between the sliding pipes. The outer peripheral surface of the traction shaft is covered with a traction roller, the traction roller is installed in the slotted position, and the first cable and the second cable are installed on the traction roller. between.

Further, a limit rod is provided on the side of the traction shaft, an anti-collision block is provided at the outer end of the limit rod, and the length of the limit rod is greater than the diameter of the traction drum.

Further, the inner top of the exposure frame is provided with a traction wheel mechanism, the traction wheel mechanism includes a traction frame, the inner top of the traction frame is provided with a ceiling rod and a gusset plate, the ceiling rod and the gusset plate are fixed on the traction frame, and the traction frame is There are traction wheels on both sides of the lower part, and the first cable and the second cable go around the traction wheels.

Further, the cross section of the traction frame is a triangular shape.

Further, the outer end of the driven drum is provided with a driven gear, the outer end of the driving drum is provided with a driving gear, and the driving gear and the driven gear are connected by a driving rack.

Further, the moving shaft is composed of several moving shafts connected end to end, and two adjacent moving shafts are connected by a joint.

Further, both sides of the exposure table are provided with limit seats, the top surface of the limit seats is provided with a buckle plate, a buckle groove is formed between the exposure table, the limit seat and the buckle plate, and a positioning cavity is between the buckle grooves.

Further, the four corners of the exposure frame are provided with first hydraulic cylinders, the lower part of the first hydraulic cylinder is provided with a first piston rod, and the lower end of the first piston rod is fixed on the gusset plate.

After the above structure is adopted, the beneficial effects of the present invention are as follows: the printing plate is installed on the exposure table, and then the film with pictures and texts is placed on the printing plate; The melting mechanism can also perform thermal exposure processing on the printing plate under the film, which greatly improves the efficiency of the exposure processing of the printing screen printing plate; Exposure treatment, the thermostat controls the heating wire in the metal tube to generate heat through the second cable, and the heating wire generates heat to make the metal tube heat up, and the printing plate can be subjected to hot melt exposure treatment through the metal tube; the stepper motor is controlled by the drive shaft to actively The roller realizes rotation, and the driving roller drives the driven roller to rotate by conveying the aluminum belt, and the moving plate is controlled by the rotation of the conveying aluminum belt to realize the reciprocating motion between the driven roller and the lower part of the driving roller; The UV lamp tube and the metal tube reciprocate back and forth between the driven roller and the lower part of the driving roller; so that the screen printing plate on the exposure table can be fully exposed; and the operator can also manually control the moving axis through the push-pull ring As the guide tube moves back and forth, the back and forth movement of the moving shaft drives the moving plug and the high temperature resistant piston to move along the axial direction of the guide tube, and the moving plug and the high temperature resistant piston move along the axial direction of the guide tube to compress or pull the heating wire. Long, compressed heating wire can greatly improve the degree of heat generation, centrally expose the parts to be exposed on the printing screen, which greatly improves the efficiency of exposure.

Description of drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic structural diagram of the traction plate according to the present invention.

FIG. 3 is a schematic diagram of the structure of the moving board according to the present invention.

FIG. 4 is a schematic structural diagram of the electrothermal melting mechanism according to the present invention.

FIG. 5 is a schematic structural diagram of the ultraviolet lamp exposure mechanism according to the present invention.

FIG. 6 is a schematic structural diagram of the traction wheel mechanism according to the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in FIG. 1 to FIG. 6 , a linear flow exposure device for printing screen printing plates according to the present invention includes an exposure frame 1 , an exposure frame 1 is provided with an exposure table 2 , and one side of the exposure frame 1 is provided with an exposure frame 1 . A driven roller 3 is provided, a driving roller 4 is provided on the other side of the exposure frame 1, a conveying aluminum belt 5 is arranged between the driving roller 4 and the driven roller 3, and the conveying aluminum belt 5 is installed above the exposure table 2; The side position of the exposure frame 1 is provided with a stepping motor 7, the front part of the stepping motor 7 is provided with a drive shaft 8, and the drive shaft 8 is installed at the axial position of the driving drum 4; the lower part of the conveying aluminum belt 5 is provided with a moving The plate 10, the moving plate 10 is installed above the exposure table 2, and the bottom surface of the moving plate 10 is provided with an ultraviolet lamp exposure mechanism 11 and an electrothermal melting mechanism 12; The exposure mechanism 11 includes a lamp housing 40, and an ultraviolet lamp tube 41 is installed in the lamp housing 40. The ultraviolet lamp tube 41 is connected with the power source 13 through the first cable 14; the electrothermal melting mechanism 12 includes a pair of metal tubes 32 arranged side by side. A helical heating wire 33 is installed inside the pipe 32, and the helical heating wire 33 has elasticity; a moving plug 34 is installed in the metal pipe 32, and a high temperature resistant piston 35 is arranged on the outer peripheral surface of the moving plug 34. The high temperature resistant piston 35 slides along the axial direction of the metal tube 32; one end of the heating wire 33 is fixed in one end of the metal tube 32, the other end of the heating wire 33 is connected with the moving plug 34, and the other end of the metal tube 32 is provided with a guide tube 36 to guide A moving shaft 37 is sleeved inside the tube 36 , the inner end of the moving shaft 37 is connected with the moving plug 34 , and the outer end of the moving shaft 37 is provided with a push-pull ring 39 .

The printing screen printing plate linear flow exposure device of the present invention installs the printing plate on the exposure table 2, and then places the film with pictures and texts on the printing plate; the ultraviolet lamp exposure mechanism 11 is used to expose the printing plate below the film. , through the electrothermal melting mechanism 12, the printing plate under the film can also be subjected to thermal exposure treatment, which greatly improves the efficiency of the exposure treatment of the printing screen printing plate; The ultraviolet lamp 41 exposes the printing plate, the thermostat 15 controls the heating wire 33 in the metal tube 32 to generate heat through the second cable 16, and the heating wire 33 generates heat to make the metal tube 32 generate heat. The printing plate is subjected to hot melt exposure treatment; the stepping motor 7 controls the driving roller 4 to rotate through the drive shaft 8, the driving roller 4 drives the driven roller 3 to rotate through the conveying aluminum belt 5, and the moving plate 10 is controlled by the rotation of the conveying aluminum belt 5. The back-and-forth movement is realized between the driven roller 3 and the lower part of the driving roller 4; the back-and-forth movement of the conveying aluminum belt 5 drives the ultraviolet lamp tube 41 and the metal tube 32 to realize back and forth between the driven roller 3 and the lower part of the driving roller 4 The screen printing plate on the exposure table 2 can be fully exposed; and the operator can also manually control the moving shaft 37 to move back and forth along the guide tube 36 through the push-pull ring 39, and the back and forth movement of the moving shaft 37 drives the movement. The plug 34 and the high temperature resistant piston 35 move along the axial direction of the guide tube 36, and the moving plug 34 and the high temperature resistant piston 35 move along the axial direction of the guide tube 36 to compress or elongate the heating wire 33. The compressed heating wire 33 can greatly improve the degree of heat generation, and focus on exposure of the parts to be exposed on the printing screen, which greatly improves the efficiency of exposure.

Preferably, the upper part of the conveying aluminum belt 5 is provided with a pulling plate 17, the middle part of the pulling plate 17 is provided with a slot 25, the first cable 14 and the second cable 16 pass through the slot 25, and both sides of the pulling plate 17 are A guide shaft 26 arranged in parallel is provided, the guide shaft 26 is sheathed with a sliding pipe 27, a traction shaft 28 is arranged between the sliding pipes 27, and the outer peripheral surface of the traction shaft 28 is sheathed with a traction roller 29, which is installed in the slot 25 position, the first cable 14 and the second cable 16 are installed between the pulling drum 29; the sliding tube 27 realizes sliding adjustment along the pulling shaft 28, so that the pulling shaft 28 can move horizontally, and the movement of the pulling shaft 28 drives the pulling drum 29 realizes the back and forth movement adjustment at the slot 25 position, and the flexible movement of the pulling drum 29 controls the pulling of the first cable 14 and the second cable 16 to prevent the first cable 14 and the second cable 16 from entangling each other. Exercise thus affects the safety of the movement of the mobile board 10 .

Preferably, a limit rod 30 is provided on the side of the traction shaft 28, an anti-collision block 31 is provided at the outer end of the limit rod 30, and the length of the limit rod 30 is greater than the diameter of the traction drum 29; The block 31 is used for anti-collision limiting, so that the two traction rollers 29 do not collide with each other, and the safety is better.

Preferably, a traction wheel mechanism 18 is provided on the inner top of the exposure frame 1 , and the traction wheel mechanism 18 includes a traction frame 44 . The inner top of the traction frame 44 is provided with a ceiling rod 45 and a buckle plate 46 , and the ceiling rod 45 and the buckle plate 46 are fixed. On the traction frame 44, traction sheaves 47 are provided on both sides of the lower part of the traction frame 44, and the first cable 14 and the second cable 16 bypass the traction sheave 47; the cross-section of the traction frame 44 is a triangular shape; The rod 45 and the pinch plate 46 securely install the traction frame 44, and the traction frame 44 pulls the first cable 14 and the second cable 16 through the traction wheel 47, which is safer.

Preferably, the outer end of the driven drum 3 is provided with a driven gear 6, the outer end of the driving drum 4 is provided with a driving gear 9, and the driving gear 9 is connected with the driven gear 6 through a driving rack; 9 and the driven gear 6 realize synchronous rotation, and through the driving gear 9 and the driven gear 6, the driven drum 3 and the driving drum 4 have good rotational stability.

Preferably, the moving shaft 37 is composed of several moving shafts connected end to end, and two adjacent moving shafts are connected by a joint 38; the moving shaft 37 is seamlessly lengthened.

Preferably, both sides of the exposure table 2 are provided with limit seats 19, the top surface of the limit seat 19 is provided with a buckle plate 20, and between the exposure table 2, the limit seat 19 and the buckle plate 20 is a buckle groove 21; the buckle groove Between 21 is a positioning cavity 24; the four corners of the exposure frame 1 are provided with first hydraulic cylinders 22, the lower part of the first hydraulic cylinder 22 is provided with a first piston rod 23, and the lower end of the first piston rod 23 is fixed on the gusset plate 20; the exposure table 2 installs the screen printing plate through the positioning cavity 24, and the two sides of the screen printing plate are buckled through the buckle groove 21; the screen printing plate is accurately installed, and it is also convenient to install the screen printing plate. The graphic film is positioned and installed.

Preferably, both sides of the moving plate 10 are provided with second hydraulic cylinders 42, the lower part of the second hydraulic cylinder 42 is provided with a second piston rod 43, and the lamp housing 40 is installed between the lower ends of the second piston rods 43; The hydraulic cylinder 42 can also control the lamp housing 40 to achieve vertical lift adjustment through the second piston rod 43 . The vertical lift adjustment of the lamp housing 40 drives the ultraviolet lamp tube 41 to rise and fall vertically, so that the ultraviolet lamp tube 41 and the exposure table 2 can be adjusted. The relative distance between the screen printing plates can adjust the intensity of the ultraviolet lamp 41 irradiated on the screen printing plate, which greatly improves the efficiency of flexibly adjusting the exposure degree of the screen printing plate.

The above descriptions are only the preferred embodiments of the present invention, so all equivalent changes or modifications made according to the structures, features and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims (9)

1. A linear flow exposure device for printing screen printing plates, comprising an exposure frame, an exposure table is arranged on the exposure frame, a driven roller is arranged on one side of the exposure frame, and an active roller is arranged on the other side of the exposure frame. The roller, a conveying aluminum belt is arranged between the driving roller and the driven roller, and the conveying aluminum belt is installed above the exposure table; the side position of the exposure frame is provided with a stepper motor, and the front part of the stepper motor is provided with a drive shaft, The drive shaft is installed at the axial position of the driving drum; It is characterized in that: the lower part of the conveying aluminum belt is provided with a moving plate, the moving plate is installed above the exposure table, the bottom surface of the moving plate is provided with a UV lamp exposure mechanism and an electrothermal melting mechanism; the top of the exposure frame is provided with a power supply and a temperature controller , the ultraviolet lamp exposure mechanism includes a lamp housing, an ultraviolet lamp tube is installed in the lamp housing, and the ultraviolet lamp tube and the power supply are connected by a first cable; The electrothermal melting mechanism includes a pair of metal tubes arranged side by side. A spiral heating wire is installed inside the metal tube. A movable plug is installed in the metal tube. The outer peripheral surface of the movable plug is provided with a high temperature resistant piston. Axial sliding of the tube; one end of the heating wire is fixed in one end of the metal tube, the other end of the heating wire is connected with the moving plug, the other end of the metal tube is provided with a guide tube, the guide tube is sleeved with a moving shaft, and the inner end of the moving shaft Connected with the moving plug, the outer end of the moving shaft is provided with a push-pull ring. 2. The linear flow exposure device for printing screen printing plates according to claim 1, characterized in that: the upper part of the conveying aluminum belt is provided with a traction plate, the middle part of the traction plate is provided with a slot, the first cable and the second cable The wire passes through the slot, the two sides of the traction plate are provided with guide shafts arranged in parallel, the guide shafts are sleeved with sliding pipes, and the traction shafts are arranged between the sliding pipes. In the slotted position, the first cable and the second cable are installed between the pulling drums. 3 . The linear flow exposure device for printing screen printing plates according to claim 2 , wherein a limit rod is provided on the side of the traction shaft, an anti-collision block is provided at the outer end of the limit rod, and the limit rod is 3. 4 . The length is greater than the diameter of the traction drum. 4. The linear flow exposure device for printing screen printing plates according to claim 1, characterized in that: the inner top of the exposure frame is provided with a traction wheel mechanism, the traction wheel mechanism comprises a traction frame, and the inner top of the traction frame is provided with a suspended ceiling The rod and the gusset plate, the ceiling rod and the gusset plate are fixed on the traction frame, and traction wheels are arranged on both sides of the lower part of the traction frame, and the first cable and the second cable pass around the traction wheel. 5 . The linear flow exposure device for printing screen printing plates according to claim 4 , wherein the cross section of the traction frame is a triangular shape. 6 . 6. The linear flow exposure device for printing screen printing plates according to claim 1, characterized in that: the outer end of the driven drum is provided with a driven gear, the outer end of the driving drum is provided with a driving gear, and the driving gear and the driven The gears are connected by a drive rack. 7 . The linear flow exposure device for printing screen printing plates according to claim 1 , wherein the moving shaft is composed of several moving shafts connected end to end, and two adjacent moving shafts are connected by joints. 8 . 8 . The linear flow exposure device for printing screen printing plates according to claim 1 , wherein the exposure table is provided with limit seats on both sides, the top surface of the limit seat is provided with a gusset, the exposure table, the limit seat Between the seat and the buckle plate is a buckle groove; between the buckle grooves is a positioning cavity. 9 . The linear flow exposure device for printing screen printing plates according to claim 8 , wherein the four corners of the exposure frame are provided with first hydraulic cylinders, and the lower part of the first hydraulic cylinder is provided with a first piston rod, 10 . The lower end of the first piston rod is fixed on the gusset plate.

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