Ink distributing device of screen printing equipment and screen printing equipment

Abstract

The utility model is suitable for the field of silk-screen printing equipment, and provides an ink distributing device of silk-screen printing equipment. When the printing scraper of the screen printing machine performs transverse printing, printing ink is accumulated towards the two sides of the printing scraper, and the printing ink is exposed in air and is prone to physical and chemical characteristic changes, so that a longitudinal ink returning device is arranged on one side of the printing scraper, and the printing ink on the side is pushed back to a printing center area from the edge; the blowing device is arranged on the other side of the printing scraper, the printing ink on the side is blown back to the printing center area from the edge, solvent supplement is conducted on the exposed printing ink, a gas protection layer is formed, and therefore the physical and chemical characteristics of the printing ink are stable, the printing ink is evenly distributed on a silk-screen printing screen without accumulation, the printing ink is saved, and the printing quality is improved.

Description

Technical Field

[0001] The utility model belongs to the field of technical improvement of screen printing machines, in particular to an ink uniforming device of screen printing equipment and the screen printing equipment. Background Art

[0002] The uniformity of ink on the screen printing plate in screen printing and the consistency of the physical and chemical properties of the ink during the printing process directly affect the quality of printing. When the printing scraper scrapes the ink, the ink will spread to both sides of the scraper, resulting in the accumulation of ink on both sides of the scraper; after the ink is spread on the screen printing plate, the contact area with the air is large, the unsaturated bonds such as resins and pigments in the ink components are easily oxidized, and the solvent in the ink is easy to volatilize, which leads to changes in the physical and chemical properties of the ink and affects the printing quality. The published utility models such as CN219427703U "Ink-saving screen printing device" and CN218928910U "An environmentally friendly screen printing machine" use ink scrapers, side scrapers, etc. to push the accumulated ink on both sides back to the printing area, but they do not solve the problem of changes in the physical and chemical properties of the ink exposed to the air. Utility Model Content

[0003] The utility model aims to provide an ink distribution device for screen printing equipment, aiming to simultaneously solve the problems of uneven distribution caused by ink accumulation on both sides of the screen printing scraper during the screen printing process and the change of its physical and chemical properties due to ink exposure on the screen printing screen.

[0004] The utility model is implemented as follows: an ink uniforming device of a silk-screen printing device comprises an ink scraping and ink returning device and an air blowing device, wherein the air blowing device is placed longitudinally and the ink scraping and ink returning device is placed transversely. When in use, the ink scraping and ink returning device moves transversely back and forth past the front of the air blowing device, the air blowing device spreads the ink on one side outside the printing area toward the middle position of the printing area, and the ink scraping and ink returning device pushes the ink on the other side outside the printing area and the left and right sides to the middle position of the printing area.

[0005] A further technical solution of the utility model is: the ink scraping and returning device includes a longitudinal ink return component, a transverse ink return and scraping component, a connecting piece and a control support, one end of the control support is connected to the connecting piece, the transverse ink return and scraping component is arranged on the control support, the longitudinal ink return component is arranged on the control support, and the longitudinal ink return component and the transverse ink return and scraping component are arranged in parallel on the control support.

[0006] A further technical solution of the utility model is: the longitudinal ink return component includes a longitudinal ink return knife, a connecting rod, a slide rail, a longitudinal moving mechanism and a longitudinal lifting mechanism, the longitudinal lifting mechanism is arranged on the longitudinal moving mechanism, the longitudinal ink return knife is connected to the longitudinal lifting mechanism through the connecting rod, and the longitudinal moving mechanism is arranged on the slide rail.

[0007] A further technical solution of the utility model is: the transverse ink return and ink scraping assembly includes a transverse ink return lifting mechanism, a transverse ink scraping lifting mechanism, a transverse ink scraping knife and a transverse ink return knife; the transverse ink return lifting mechanism and the transverse ink scraping lifting mechanism are respectively arranged on the control support; the transverse ink return lifting mechanism is parallel to the transverse ink scraping lifting mechanism; the transverse ink scraping knife is connected to the transverse ink scraping lifting mechanism via a connecting rod; and the transverse ink return knife is connected to the transverse ink return lifting mechanism via a connecting rod.

[0008] A further technical solution of the utility model is: the blowing device includes a blowing frame, a plurality of air outlets arranged in the blowing frame, the plurality of air outlets are evenly arranged in the blowing frame, the blowing outlets of the blowing frame are flat-mouthed, and the plurality of air outlets are connected to an air source through pipes respectively.

[0009] A further technical solution of the utility model is that the longitudinal ink return knife is installed at the front end of the ink scraping and ink return device in the transverse direction of the ink scraping and printing.

[0010] A further technical solution of the utility model is: the length of the blowing port is not less than the printing scraping stroke of the silk screen scraper, and the blowing frame is provided with an air volume adjustment mechanism for adjusting the air volume and an axial rotation angle adjustment mechanism for rotating the air outlet direction.

[0011] A further technical solution of the utility model is: the gas source is a mixed gas distribution device.

[0012] A further technical solution of the utility model is: the longitudinal lifting mechanism is a cylinder or a motor, and the longitudinal moving mechanism is a cylinder or a motor.

[0013] Another object of the present invention is to provide a screen printing device, which includes a main body device and an ink uniforming device, wherein the ink uniforming device is arranged on the main body device.

[0014] The beneficial effects of the utility model are as follows: the ink accumulated on both sides of the scraper is scraped back to the central area of ​​the silk screen by the longitudinal scraper on one side, and is blown back to the central area of ​​the silk screen by the air outlet on the other side, thereby ensuring the uniformity of the ink, improving the printing quality and high utilization rate; at the same time, the protective gas blown out of the air outlet can isolate the ink to be printed on the silk screen plate from the air, and can replenish the volatile solvent in the ink, thereby ensuring that the physical and chemical properties of the ink are always consistent, and ensuring the printing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the screen printing device provided by the embodiment of the utility model.

[0016] Figure 2It is a structural schematic diagram of the ink scraping and ink returning device provided in an embodiment of the utility model.

[0017] Figure 3 It is a schematic structural diagram of a blowing device provided in an embodiment of the utility model.

[0018] Figure 4 It is a structural schematic diagram of the main device provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0019] Figure numerals: 10 - main device 20 - ink scraping and ink returning device 30 - blowing device 101 - frame 102 - main control panel 103 - emergency stop panel 104 - fine-tuning button 105 - table 106 - cylinder 107 - U-shaped inlay 108 - motor 109 - net supporting frame 110 - net clamping groove 111 - net frame supporting arm 112 - movable support 113 - lifting frame 201 - control support 202 - horizontal ink scraping knife 203 - horizontal ink returning knife 204 - horizontal ink scraping lifting mechanism 205 - fine-tuning button 206 - slide rail 207 - connecting rod 208 - longitudinal ink returning knife 209 - longitudinal lifting mechanism 210 - longitudinal moving mechanism 211 - connecting piece 212 - horizontal ink returning lifting mechanism 301 - blowing port.

[0020] The following describes the embodiments of the present invention in detail, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not intended to be used to explain the present invention.

[0021] This can be understood as a limitation of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0023] like Figure 1-4, the ink uniforming device of the silk-screen printing equipment provided by the utility model comprises an ink scraping and ink returning device 20 and a blowing device 30, the blowing device 30 is longitudinally placed on the main device 10, the ink scraping and ink returning device 20 is transversely placed on the main device 10, the longitudinal axis extension line of the blowing device 40 and the transverse axis extension line of the ink scraping and ink returning device 20 are perpendicular in the same plane, when in use, the ink scraping and ink returning device 20 moves back and forth transversely passing in front of the blowing device 30, the blowing device 30 spreads the ink on one side outside the printing area to the middle position of the printing area, and the ink scraping and ink returning device 20 pushes the ink on the other side outside the printing area and the left and right sides to the middle position of the printing area.

[0024] The ink scraping and returning device 20 is horizontally installed on the main device 10, and the ink scraping and returning device 20 includes a longitudinal ink return component, a transverse ink return and scraping component, a connecting piece 211 and a control support 201. The longitudinal ink return component is installed on the control support 201, and the transverse ink return and scraping component is installed on the control support and is placed on one side of the longitudinal ink return component. One end of the control support 201 is connected to the connecting piece 211, and the longitudinal ink return component and the transverse ink return and scraping component are arranged in parallel on the control support 201.

[0025] The longitudinal ink return assembly includes a longitudinal ink return knife 208 for returning ink, a connecting rod 207, a slide rail 206, a longitudinal moving mechanism 210 and a longitudinal lifting mechanism 209. The longitudinal lifting mechanism 209 is installed on the longitudinal moving mechanism 210 and is used to drive the longitudinal lifting mechanism 209 to move horizontally. The longitudinal moving mechanism 210 is installed on the slide rail 206 to slide back and forth longitudinally. One end of the connecting rod 207 is connected to the longitudinal lifting mechanism 209, and the other end of the connecting rod 207 is connected to the longitudinal ink return knife 208.

[0026] The longitudinal ink return blade 208 is installed perpendicularly to the screen printing scraper blade, and the blowing device 30 includes a blowing port 301 installed perpendicularly to the screen printing scraper blade on the frame above the screen printing screen frame on the opposite side of the longitudinal ink return blade 208, and an air source connected to the blowing port 301 through a pipe. The ink accumulated on both sides of the screen printing scraper blade is blown from the edge to the center area of ​​the screen printing by the gas blown out of the blowing port 301 on one side; on the other side, the longitudinal lifting mechanism 209 lowers the longitudinal ink return blade 208 when it is at the edge position, and the longitudinal moving mechanism 210 drives the longitudinal ink return blade 208 to push the ink to the center area of ​​the screen printing, and after the longitudinal lifting mechanism 209 raises the longitudinal ink return blade 208, it drives the longitudinal ink return blade 208 back to the edge to repeat the above ink return action.

[0027] like Figure 2As shown, when the longitudinal ink return knife 208 is installed at the front end of the control support 201 in the transverse printing direction of the ink scraper, the ink return action of the longitudinal ink return knife 208 at the edge of the silk screen scraper does not affect the transverse ink scraper 202 in performing transverse ink scraping printing and ink return and ink distribution, and is more conducive to pushing the edge ink back to the printing center area.

[0028] The transverse ink return and scraping assembly includes a transverse ink return lifting mechanism 212, a transverse ink scraping lifting mechanism 204, a transverse ink scraping blade 202 and a transverse ink return blade 203. The transverse ink return lifting mechanism 212 and the transverse ink scraping lifting mechanism 204 are respectively arranged on the control support 201. The transverse ink return lifting mechanism 212 is arranged in parallel with the transverse ink scraping lifting mechanism 204. The transverse ink scraping blade 202 is connected to the transverse ink scraping lifting mechanism 204 through a connecting rod, and the transverse ink return blade 203 is connected to the transverse ink return lifting mechanism 212 through a connecting rod. A fine-tuning button 205 is respectively installed on the top surface of the longitudinal ink return lifting mechanism 209, the transverse ink scraping lifting mechanism 204 and the longitudinal ink return lifting mechanism 212.

[0029] like Figure 1 Figure 2 As shown, the longitudinal movement mechanism 210 includes a speed controller.

[0030] According to the transverse scraping and printing speeds and the transverse ink return and uniform ink distribution speeds of the transverse scraper 202 and the transverse ink return knife 203 and the length of the longitudinal ink return knife 208, the working frequency of the longitudinal ink return knife 208 is adjusted to ensure that within the cycle time of the longitudinal ink return knife 208 completing a complete ink return action, the transverse printing and transverse ink return and uniform ink distribution strokes of the transverse scraper 202 and the transverse ink return knife 203 are not greater than the length of the longitudinal ink return knife 208, thereby ensuring that the edge ink is contacted by the longitudinal ink return knife 11.

[0031] like Figure 1 Figure 3 As shown, the blowing device 30 includes a blowing frame, a plurality of air outlets arranged in the blowing frame, the plurality of air outlets are evenly arranged in the blowing frame, the blowing outlet 301 of the blowing frame is flat, and the plurality of air outlets are connected to an air source through pipes respectively.

[0032] The length of the blowing port 301 is not less than the printing stroke of the silk screen scraper, and the blowing port 301 includes an air volume adjustment mechanism and an axial rotation angle adjustment mechanism. The blowing port 301 is fixed in the transverse printing direction, so its length needs to cover the ink accumulation area on one side. By adjusting the air volume and rotation angle of the blowing port 301, it can be ensured that the accumulated ink is blown to the printing center area and a gas protection layer is formed on the ink on the entire screen surface.

[0033] The gas source of the blowing device 30 is a mixing gas distribution device, which can mix various gases with high precision to protect the printing ink; it can also mix the ink solvent and replenish the solvent volatilized by the printing ink by blowing.

[0034] like Figure 2 As shown, the longitudinal lifting mechanism 209 is a cylinder or a motor, and the longitudinal moving mechanism 210 is a cylinder or a motor. Using a cylinder or a motor is a conventional method for the longitudinal ink return knife 208 to move up and down and move back and forth longitudinally. Other methods such as electromagnetics are also within the protection scope of this embodiment.

[0035] A screen printing device comprises a main device 10 and an ink uniforming device, wherein the ink uniforming device is arranged on the main device 10.

[0036] The main device 10 includes a frame 101, a main control board 102 installed on the front of the frame 101, a workbench placed on the top surface of the frame 101, a fine-tuning button 104 is installed at each end of the side of the workbench, an emergency stop plate 103 is installed between the two fine-tuning buttons 104, a table 105 is installed on the workbench, a net supporting frame 109 is installed on the table 105, a grid support arm 111 is installed at each end of the net supporting frame 109, a movable support 112 is installed on the grid support arm 111, the movable support 112 is installed on the lifting frame 113, a U-shaped inlay 107 is installed on the slider on the movable support 112, a cylinder 106 is installed in the groove of the U-shaped inlay 107, and a motor 108 is installed on the back side of the movable support 112, and the motor 108 drives the slider to move back and forth longitudinally on the movable support 112 through a pulley, so that the ink scraping and ink returning device 20 completes the longitudinal movement as a whole.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ink distribution device for a screen printing device, characterized in that: It includes an ink scraping and ink returning device and an air blowing device, the air blowing device is placed longitudinally, and the ink scraping and ink returning device is placed transversely. When in use, the ink scraping and ink returning device moves back and forth transversely passing in front of the air blowing device, the air blowing device spreads the ink on one side outside the printing area to the middle position of the printing area, and the ink scraping and ink returning device pushes the ink on the other side and the left and right sides outside the printing area to the middle position of the printing area.

2. The ink distribution device of the screen printing equipment according to claim 1, characterized in that: The ink scraping and returning device includes a longitudinal ink return component, a transverse ink return and scraping component, a connecting part and a control support, one end of the control support is connected to the connecting part, the transverse ink return and scraping component is arranged on the control support, the longitudinal ink return component is arranged on the control support, and the longitudinal ink return component and the transverse ink return and scraping component are arranged in parallel on the control support.

3. The ink distribution device of the screen printing equipment according to claim 2, characterized in that: The longitudinal ink return assembly includes a longitudinal ink return knife, a connecting rod, a slide rail, a longitudinal moving mechanism and a longitudinal lifting mechanism. The longitudinal lifting mechanism is arranged on the longitudinal moving mechanism. The longitudinal ink return knife is connected to the longitudinal lifting mechanism through the connecting rod. The longitudinal moving mechanism is arranged on the slide rail.

4. The ink distribution device of the screen printing equipment according to claim 3, characterized in that: The transverse ink return and ink scraping assembly includes a transverse ink return lifting mechanism, a transverse ink scraping lifting mechanism, a transverse ink scraping knife and a transverse ink return knife. The transverse ink return lifting mechanism and the transverse ink scraping lifting mechanism are respectively arranged on the control support. The transverse ink return lifting mechanism is parallel to the transverse ink scraping lifting mechanism. The transverse ink scraping knife is connected to the transverse ink scraping lifting mechanism through a connecting rod, and the transverse ink return knife is connected to the transverse ink return lifting mechanism through a connecting rod.

5. The ink distribution device of the screen printing equipment according to claim 4, characterized in that: The blowing device comprises a blowing frame, a plurality of air outlets arranged in the blowing frame, the plurality of air outlets are evenly arranged in the blowing frame, the blowing outlets of the blowing frame are flat, and the plurality of air outlets are connected to an air source through pipelines.

6. The ink distribution device of the screen printing equipment according to claim 5, characterized in that: The longitudinal ink return blade is installed at the front end of the ink scraping and ink return device in the transverse direction of the ink scraping and printing.

7. The ink distribution device of the screen printing equipment according to claim 6, characterized in that: The length of the air blowing port is not less than the printing scraping stroke of the silk screen scraper, and the air blowing frame is provided with an air volume regulating mechanism for regulating the air volume and an axial rotation angle regulating mechanism for rotating the air outlet direction.

8. The ink distribution device of the screen printing equipment according to claim 7, characterized in that: The gas source is a mixed gas distribution device.

9. The ink distribution device of the screen printing equipment according to claim 8, characterized in that: The longitudinal lifting mechanism is a cylinder or a motor, and the longitudinal moving mechanism is a cylinder or a motor.

10. A screen printing device, characterized in that: The screen printing device comprises a main body device and the ink uniformly distributing device according to any one of claims 1 to 9, wherein the ink uniformly distributing device is arranged on the main body device.

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