UV printing equipment

Abstract

The invention discloses UV printing equipment which comprises four printing boxes, a printing piece transfer printing box and a UV box. A printing box is fixed on each of four side walls of the upper half part of the printing piece transfer printing box, and a lifting box is arranged at the bottom of the printing piece transfer printing box; conveying belts are arranged at the lower half parts in the four printing boxes, and ink printing equipment is mounted at the tops of the printing boxes; the conveying belts in the four printing boxes are located in the same horizontal plane, and the distance between every two conveying belts, located on the same straight line, of the conveying belts in the four printing boxes is equal. The UV box is provided with a plurality of ultraviolet lamps, and the ultraviolet lamps irradiate downwards. Printing pieces are transferred in the four printing boxes to be subjected to multi-layer printing, the printing speed is high, the printing pieces can be quickly transferred to the cured printing piece transfer printing box to be quickly cured, the whole space production line is short, control is easy, and the printing efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of UV printing, and in particular to a UV printing device. Background Art

[0002] UV ink is ultraviolet curing ink. UV ink was first used in vacuum electroplating products. Usually, a layer of UV coating is applied to the metal products after vacuum plating to protect the vacuum plating layer which is very easy to oxidize. In order to increase the aesthetic effect of the surface, ordinary colorant powder can be added to the colorless UV ink to increase the color of the coating. Some printing processes require multi-layer printing, and UV curing is required after each printing. However, during the printing process, the printed parts need to be continuously transported, and multiple UV curing chambers are required. The printing length is long, the curing is inconvenient, the curing time is long, and it is impossible to print and cure quickly. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one object of the present invention is to provide a UV printing device that solves the problems of slow curing efficiency of multi-layer printing and long printing production line.

[0004] A UV printing device according to the present invention comprises four printing boxes, a printing piece transfer box and a UV box; A printing box is fixed on each of the four side walls of the upper half of the printed transfer box, the printing box on the left side of the printed transfer box is a printed input box, and the other three are printed transfer boxes, a UV box is installed on the top of the printed transfer box, a printed output box is fixed on the right side wall of the lower half of the printed transfer box, and a lifting box is provided at the bottom of the printed transfer box; The lower half of the four printing boxes are all provided with a conveyor belt, and the top is equipped with an ink printing device, each printing box is provided with a printed part correction component, and the printed part transfer box is provided with a transfer conveyor belt, and the transfer conveyor belt is installed on a U-shaped frame, and the bottom of the U-shaped frame is installed on a servo disc motor, and the bottom of the servo disc motor is installed on a lifting component in the lifting box; The conveyor belts in the four printing boxes are in the same horizontal plane, the distance between two conveyor belts in the same straight line is equal, the length of the transfer conveyor belt is 1-2 cm shorter than the distance between two conveyor belts in the same straight line, and the transfer conveyor belt can move downward to dock with the output conveyor belt in the print output box; The top of the printed part transfer box is open, and the bottom of the UV box is open. The top of the printed part transfer box 2 is attached to the bottom of the UV box and is detachably sealed. The UV box is provided with a plurality of ultraviolet lamps and the ultraviolet lamps irradiate downward.

[0005] In some embodiments of the present invention, a limit rod is movably inserted into each of the four corner positions of the ink printing device, a pull block is provided at the top center position of the ink printing device, a screw rod is spirally inserted in the pull block, the screw rod is connected to the rotating shaft of the servo motor, and the servo motor is fixed on the top wall of the printing box.

[0006] In other embodiments of the present invention, the four conveyor belts in the printing box and the output conveyor belt in the printed material output box are provided with a support plate on the lower surface of the upper belt, and the support plate is a stainless steel plate and the two sides of the support plate are fixed to the inner side walls of the printing box.

[0007] In some other embodiments of the present invention, the print correction assembly on the print transfer box includes correction blocks on both sides and positioning blocks at the ends, the correction blocks on both sides are mounted on the shafts of two side cylinders, the side cylinders are fixedly mounted on the side walls of the print box, the positioning blocks are mounted on the shafts of two end cylinders, the end cylinders are fixed on the end walls of the print box, and the correction blocks and positioning blocks are both placed on the edge of the upper surface of the conveyor belt; The print correction assembly on the print input box includes correction blocks on both sides and a lifting and positioning structure. The correction blocks on the print input box are installed in the same way as the correction blocks on the print transfer box. The lifting and positioning structure includes a downward cylinder, a horizontal pushing cylinder and a positioning plate. The downward cylinder is fixed on the right side wall of the ink printing equipment. The downward cylinder is arranged downward and a horizontally placed horizontal pushing cylinder is fixedly installed on the cylinder shaft of the downward cylinder. The cylinder shaft of the horizontal pushing cylinder faces the input end of the print input box, and a positioning plate is fixed on the cylinder shaft of the horizontal pushing cylinder.

[0008] In some other embodiments of the present invention, four synchronous lifting cylinders are provided in the lifting box, and the bottom of the servo disc motor is fixed on the ends of the cylinder shafts of the four synchronous lifting cylinders. When the transfer conveyor belt is lifted to the highest point, the bottom of the U-shaped frame is higher than the upper surface of the conveyor belt. When the transfer conveyor belt is lifted to the lowest point, the upper surface of the transfer conveyor belt is 0.5-1.0 cm higher than the upper surface of the output conveyor belt.

[0009] In other embodiments of the present invention, the four printing boxes and the printed material transfer box are all connected with an air inlet pipe and an exhaust pipe, the air blown into the box by the air inlet pipe is dry gas, and the exhaust pipe draws the gas in the box out.

[0010] In some other embodiments of the present invention, a UV lamp power regulator is provided in the UV box for regulating the power of the UV lamp.

[0011] In some other embodiments of the present invention, after the transfer conveyor belt carries the printed workpiece just printed, the transfer conveyor belt needs to be raised to the top for ultraviolet irradiation.

[0012] In the present invention, the printed parts are transferred in four printing boxes for multi-layer printing, the printing speed is fast, and the printed parts can be quickly transferred to the transfer box for rapid curing. The entire space production line is short, easy to control, and the printing efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 The present invention provides a schematic structural diagram of a UV printing device.

[0014] Figure 2 This is a schematic diagram of the cross-sectional structure of a UV printing device proposed by the present invention (the transfer conveyor belt is lowered to the bottom position).

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of a UV printing device proposed by the present invention (when the transfer conveyor belt is docked with the conveyor belt).

[0016] Figure 4 This is a schematic diagram of the cross-sectional structure of a UV printing device proposed by the present invention (the transfer conveyor belt is lowered to the topmost position).

[0017] Figure 5 This is a top view of the interior of a UV printing device proposed by the present invention.

[0018] In the figure: 1. Printed part input box; 2. Printed part transfer box; 3. Printed part transfer box; 4. UV box; 41. UV lamp; 5. Printed part output box; 51. Output conveyor belt; 6. Ink printing equipment; 61. Limit rod; 62. Servo motor; 7. Conveyor belt; 71. Support plate; 8. Downward cylinder; 9. Transfer conveyor belt; 91. Profile frame; 92. Servo disc motor; 93. Synchronous lifting cylinder. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] like Figure 1-5 As shown, a UV printing device proposed by the present invention includes four printing boxes, a printing piece transfer box 2 and a UV box 4; A printing box is fixed on each of the four side walls of the upper half of the printed transfer box 2. The printing box on the left side of the printed transfer box is a printed input box 1, and the other three are printed transfer boxes 3. A UV box 4 is installed on the top of the printed transfer box 2. A printed output box 5 is fixed on the right side wall of the lower half of the printed transfer box 2. A lifting box is provided at the bottom of the printed transfer box 2. Four printing boxes are arranged around the four side walls of the printed material transfer box 2. The printed material is put into the conveyor belt 7 from the input end of the printed material input box 1, and is transferred to each other through the transfer conveyor belt 9 in the printed material transfer box 2 to realize multi-layer printing. Each time the printed material is transferred to the printed material transfer box 2, curing is performed once.

[0021] The lower half of the four printing boxes are all provided with a conveyor belt 7, and the top is equipped with an ink printing device 6. Each printing box is provided with a printed part correction component. The printed part transfer box 2 is provided with a transfer conveyor belt 9, and the transfer conveyor belt 9 is installed on a U-shaped frame 91. The bottom of the U-shaped frame 91 is installed on a servo disc motor 92, and the bottom of the servo disc motor 92 is installed on the lifting component in the lifting box. The shaped frame 91 is rotated to achieve docking, but the lifting can prevent the conveyor belt 7 from being bumped, and the gap can be small after docking. It can also move down to dock and output the output conveyor belt 51.

[0022] The conveyor belts 7 in the four printing boxes are in the same horizontal plane, the distance between two conveyor belts 7 in the same straight line is equal, the length of the transfer conveyor belt 9 is 1-2cm less than the distance between the two conveyor belts 7 in the same straight line, and the transfer conveyor belt 9 can move downward to dock with the output conveyor belt 51 in the printed output box 5, so as to facilitate docking without friction.

[0023] The top of the printed material transfer box 2 is open, and the bottom of the UV box 4 is open. The top of the printed material transfer box 2 is attached to the bottom of the UV box 4 and is detachably sealed. The UV box 4 is provided with a plurality of ultraviolet lamps 41 and the ultraviolet lamps 41 irradiate downward. Curing is more convenient, and it is also convenient to disassemble the UV box 4 to clean the UV box 4 and repair the ultraviolet lamps 41.

[0024] A limiting rod 61 is movably inserted into each of the four corners of the ink printing device 6, and a pull block is provided at the top center of the ink printing device 6. A screw rod is spirally inserted in the pull block, and the screw rod is connected to the rotating shaft of a servo motor 62. The servo motor 62 is fixed on the top wall of the printing box.

[0025] The screw rod is fixed at the top position with a bearing so that the device has a pulling force. If the screw rod cannot pull the ink printing device 6, the limit rod 61 can be replaced with a screw rod, and the servo motor is used to drive the four corners.

[0026] The four conveyor belts 7 in the printing box and the output conveyor belt 51 in the print output box 5 are all provided with a support plate 71 on the lower surface of the upper belt, and the support plate 71 is a stainless steel plate and the two sides of the support plate are fixed on the two side walls inside the printing box. When printing, the conveyor belt will not move downward and deform, so that the printing is smooth.

[0027] The print correction assembly on the print transfer box 3 includes correction blocks on both sides and positioning blocks at the ends. The correction blocks on both sides are mounted on the shafts of two side cylinders 301, and the side cylinders 301 are fixedly mounted on the side walls of the print box. The positioning blocks are mounted on the shafts of two end cylinders 302, and the end cylinders 302 are fixed on the end walls of the print box. The correction blocks and positioning blocks are both placed on the edge of the upper surface of the conveyor belt 7. The print correction assembly on the print input box 3 includes correction blocks on both sides and a lifting and positioning structure. The correction blocks on the print input box 3 are installed in the same way as the correction blocks on the print transfer box 3. The lifting and positioning structure includes a downward cylinder 8, a horizontal pushing cylinder 81 and a positioning plate. The downward cylinder 8 is fixed on the right side wall of the ink printing device 7. The downward cylinder 8 is arranged downward and a horizontally placed horizontal pushing cylinder 81 is fixedly installed on the cylinder shaft of the downward cylinder 8. The cylinder shaft of the horizontal pushing cylinder 81 faces the input end of the print input box 3, and a positioning plate is fixed on the cylinder shaft of the horizontal pushing cylinder 81.

[0028] When the printed workpiece hits the positioning block or positioning plate, the correction block is activated to correct the printed workpiece to the center, and then printing is carried out.

[0029] Four synchronous lifting cylinders 93 are provided in the lifting box, and the bottom of the servo disc motor 92 is fixed on the cylinder shaft ends of the four synchronous lifting cylinders 93. When the transfer conveyor belt 9 is lifted to the highest point, the bottom of the U-shaped frame 91 is higher than the upper surface of the conveyor belt 7. When the transfer conveyor belt 9 is lifted to the lowest point, the upper surface of the transfer conveyor belt 9 is 0.5-1.0 cm higher than the upper surface of the output conveyor belt 51.

[0030] It can be lifted and lowered at a fixed height. If the lifting accuracy of the lifting cylinder 93 is greatly affected by the ambient temperature, the lifting screw rod can be used to replace it.

[0031] The four printing boxes and the printed transfer box 2 are all connected with an air inlet pipe and an exhaust pipe. The air blown into the box by the air inlet pipe is dry air, and the exhaust pipe draws the air in the box out. The air containing ink is drawn out in time to prevent the ink from volatilizing and sticking to the wall in the box.

[0032] The UV box 4 is provided with an ultraviolet lamp power regulator for adjusting the power of the ultraviolet lamp 41. The curing power is set according to the thickness of the printing ink to prevent problems such as too fast curing and cracking when the ink is thin, and slow curing when the ink is thick.

[0033] After the transfer conveyor belt 9 is loaded with the printed piece, it is necessary to raise the transfer conveyor belt 9 to the top for ultraviolet irradiation. The closer it is to the ultraviolet lamp, the better the curing effect is. It is easy to control the curing time.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A UV printing device, characterized in that: It includes four printing boxes, a printed part transfer box (2) and a UV box (4); A printing box is fixed to each of the four side walls of the upper half of the printed material transfer box (2); the printing box on the left side of the printed material transfer box is a printed material input box (1), and the other three are printed material transfer boxes (3); a UV box (4) is installed on the top of the printed material transfer box (2); a printed material output box (5) is fixed to the right side wall of the lower half of the printed material transfer box (2); and a lifting box is provided at the bottom of the printed material transfer box (2); The lower half of each of the four printing boxes is provided with a conveyor belt (7), and the top is provided with an ink printing device (6). Each of the printing boxes is provided with a printed part correction component. The printed part transfer box (2) is provided with a transfer conveyor belt (9), and the transfer conveyor belt (9) is installed on a U-shaped frame (91). The bottom of the U-shaped frame (91) is installed on a servo disc motor (92), and the bottom of the servo disc motor (92) is installed on a lifting component in the lifting box. The conveyor belts (7) in the four printing boxes are in the same horizontal plane, the distance between two conveyor belts (7) in the same straight line is equal, the length of the transfer conveyor belt (9) is 1-2 cm shorter than the distance between the two conveyor belts (7) in the same straight line, and the transfer conveyor belt (9) can move downward to dock with the output conveyor belt (51) in the printed output box (5); The top of the printed material transfer box (2) is open, and the bottom of the UV box (4) is open; the top of the printed material transfer box (2) and the bottom of the UV box (4) are attached and detachably sealed; the UV box (4) is provided with a plurality of ultraviolet lamps (41) and the ultraviolet lamps (41) irradiate downwards.

2. A UV printing device according to claim 1, characterized in that: A limiting rod (61) is movably inserted into each of the four corners of the ink printing device (6). A pull block is provided at the center of the top of the ink printing device (6). A lead screw is spirally inserted into the pull block. The lead screw is connected to the rotating shaft of a servo motor (62). The servo motor (62) is fixed to the top wall of the printing box.

3. The UV printing device according to claim 1, characterized in that: The four printing box inner conveyor belts (7) and the printed material output box (5) inner conveyor belt (51) are all provided with a support plate (71) on the lower surface of the upper belt, and the support plate (71) is a stainless steel plate and the two sides of the support plate are fixed to the inner side walls of the printing box.

4. The UV printing device according to claim 1, characterized in that: The printed piece correction assembly on the printed piece transfer box (3) comprises correction blocks on both sides and positioning blocks at the ends, the correction blocks on both sides are mounted on the shafts of two side cylinders (301), the side cylinders (301) are fixedly mounted on the side walls of the printing box, the positioning blocks are mounted on the shafts of two end cylinders (302), the end cylinders (302) are fixed on the end walls of the printing box, and the correction blocks and positioning blocks are both placed on the edge of the upper surface of the conveyor belt (7); The printed part correction assembly on the printed part input box (3) comprises correction blocks on both sides and a lifting and positioning structure. The correction blocks on the printed part input box (3) are installed in the same manner as the correction blocks on the printed part transfer box (3). The lifting and positioning structure comprises a downward cylinder (8), a horizontal push cylinder (81) and a positioning plate. The downward cylinder (8) is fixed on the right side wall of the ink printing device (7). The downward cylinder (8) is arranged downward and a horizontally placed horizontal push cylinder (81) is fixedly mounted on the cylinder shaft of the downward cylinder (8). The cylinder shaft of the horizontal push cylinder (81) faces the input end of the printed part input box (3), and a positioning plate is fixed on the cylinder shaft of the horizontal push cylinder (81).

5. The UV printing device according to claim 1, characterized in that: Four synchronous lifting cylinders (93) are arranged in the lifting box, and the bottom of the servo disc motor (92) is fixed on the cylinder shaft ends of the four synchronous lifting cylinders (93). When the transfer conveyor belt (9) is lifted to the highest point, the bottom of the U-shaped frame (91) is higher than the upper surface of the conveyor belt (7). When the transfer conveyor belt (9) is lifted to the lowest point, the upper surface of the transfer conveyor belt (9) is 0.5-1.0 cm higher than the upper surface of the output conveyor belt (51).

6. The UV printing device according to claim 1, characterized in that: The four printing boxes and the printed material transfer box (2) are all connected with an air inlet pipe and an exhaust pipe. The air blown into the box by the air inlet pipe is dry air, and the exhaust pipe draws the air in the box out.

7. The UV printing device according to claim 1, characterized in that: The UV box (4) is provided with an ultraviolet lamp power regulator for adjusting the power of the ultraviolet lamp (41).

8. The UV printing device according to claim 1, characterized in that: After the transfer conveyor belt (9) is loaded with the printed piece that has just been printed, the transfer conveyor belt (9) needs to be raised to the top for ultraviolet irradiation.

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