Adjustable ink scraping device for intaglio printing

Abstract

The utility model discloses an intaglio printing adjustable ink scraping device which comprises a scraping frame and a servo motor, the servo motor is arranged on the side wall of the scraping frame, a worm is installed at the output end of the servo motor, a worm gear is movably arranged in the scraping frame on one side of the worm, the worm is meshed with the worm gear, and the worm gear is meshed with the worm. A long connecting arm is movably arranged on the side wall of the worm gear, a short connecting arm is movably installed at the end, away from the worm gear, of the long connecting arm, a hinge shaft is arranged at the end, away from the long connecting arm, of the short connecting arm, the hinge shaft is fixedly connected with the short connecting arm, the hinge shaft is movably connected with the scraping and sweeping frame, and the hinge shaft extends to the outside of the scraping and sweeping frame. A swing arm is arranged on the surface of the hinge shaft, a scraper is arranged at the bottom end of the swing arm, and a base is arranged outside the scraping and sweeping frame. According to the ink scraping device, ink in the gravure is scraped and swept in a reciprocating swinging mode, uniform ink scraping and printing on a printing stock are facilitated, and the printing quality is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of scraper devices, specifically an adjustable scraper device for gravure printing. Background Technology

[0002] The surface of a gravure printing plate consists of recessed image areas (cells) and flat blank areas. During printing, ink fills the cells, and a doctor blade scrapes away the ink from the blank areas. Pressure is then used to transfer the ink from the cells to the substrate, completing the printing process. When printing on fan-shaped substrates, traditional doctor blades are straight blades, which are not convenient for scraping ink from fan-shaped substrates and are prone to ink leakage, resulting in poor scraping effect. To improve this situation, an adjustable doctor blade device for gravure printing is proposed.

[0003] An adjustable intaglio printing device, disclosed in authorization announcement number CN222921220U, includes an ink cartridge and an adjustment frame. The ink cartridge has fixed bases at both ends of its left side. Each fixed base has a through groove inside, which is slidably connected to a lifting rod. The front and rear ends of the adjustment frame are rotatably connected to shaft holes on the surfaces of two corresponding lifting rods. A screw is threaded into a screw hole on the surface of the adjustment frame. The right end of the screw is rotatably connected to the middle of the left side of the blade holder. An auxiliary unit is provided on the top surface of the blade holder, and an adjustment unit is provided on the outer side of the lifting rod. The device also includes a doctor blade inserted inside the blade holder.

[0004] While it allows for adjusting the doctor blade height by sliding the lifting rod inside the fixed base, and simultaneously adjusting the distance between the doctor blade and the gravure printing roller by rotating the screw to meet different ink scraping needs, the doctor blade can scrape off excess ink from the surface of the gravure printing roller, thus facilitating gravure printing. The extension of the spring ensures that the auxiliary doctor blade is in contact with the surface of the gravure printing roller, preventing wear on the doctor blade from affecting the ink scraping effect and improving the overall efficiency. The retraction of the return spring allows the locking rod to insert into the locking hole on the surface of the adjusting wheel, thus locking the doctor blade after angle adjustment to prevent it from loosening and affecting ink scraping on the gravure printing roller.

[0005] However, this does not solve the problem that existing doctor blade devices are not conducive to the reciprocating oscillation and scraping of ink in the gravure plate during use, which is not conducive to uniform printing on the substrate and affects the printing quality. Utility Model Content

[0006] The purpose of this invention is to provide an adjustable squeegee for gravure printing, which solves the problem mentioned in the background art that the squeegee is not convenient for reciprocating and oscillating to scrape the ink in the gravure, which is not conducive to uniform squeegee printing on the substrate and affects the printing quality.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an adjustable squeegee for gravure printing, comprising a squeegee frame and a servo motor. The servo motor is mounted on the side wall of the squeegee frame, and a worm gear is mounted on the output end of the servo motor. A worm wheel is movably mounted inside the squeegee frame on one side of the worm gear, and the worm gear and the worm wheel mesh with each other. A long connecting arm is movably mounted on the side wall of the worm wheel, and a short connecting arm is movably mounted on the end of the long connecting arm away from the worm wheel. A hinge shaft is mounted on the end of the short connecting arm away from the long connecting arm, and the hinge shaft is fixedly connected to the short connecting arm and movably connected to the squeegee frame. The hinge shaft extends to the outside of the squeegee frame, and a swing arm is mounted on the surface of the hinge shaft. A squeegee blade is mounted at the bottom end of the swing arm, and a base is mounted on the outside of the squeegee frame.

[0008] Preferably, the top of the base is provided with a placement plate, and the bottom of the placement plate is symmetrically provided with two sets of cylinders.

[0009] Preferably, a concave plate is provided above the placement plate, and each cylinder has a push arm at its output end, with the push arm connected to the concave plate.

[0010] Preferably, a support plate is installed on the side wall of the concave body, and an integrated frame is provided at the top of the support plate.

[0011] Preferably, a lead screw is movably mounted inside the integrated frame, and a stepper motor is provided at the top of the integrated frame, with the output end of the stepper motor connected to the lead screw.

[0012] Preferably, the surface of the lead screw is fitted with a threaded sleeve, and the threaded sleeve is threadedly connected to the lead screw.

[0013] Preferably, a connecting plate is provided on the side wall of the threaded sleeve, and the connecting plate is connected to the scraping frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the ink scraping device not only realizes the reciprocating oscillation to scrape the ink in the gravure plate, facilitating uniform ink scraping printing on the substrate, but also improves the printing quality.

[0015] Ink is poured into grooves on the surface of the gravure printing plate. These grooves contain cells and flat blank areas. A fan-shaped substrate is placed between the placement plate and the gravure printing plate. A cylinder drives a push arm to move, which in turn moves the gravure printing plate, clamping the fan-shaped substrate between the plate and the placement plate to prevent displacement during printing. A stepper motor drives a lead screw to rotate, which in turn moves a threaded sleeve downwards. This sleeve, through a connecting plate, moves the squeegee frame, swing arm, and squeegee downwards, positioning the squeegee within the grooves on the surface of the gravure printing plate. A servo motor drives a worm gear to rotate, which in turn drives a long connecting arm to swing back and forth. The long connecting arm drives the short connecting arm to swing back and forth. The short connecting arm, through a hinge shaft, drives the swing arm to swing back and forth. The swing arm drives the squeegee to swing back and forth. The squeegee scrapes ink from the flat blank area into the cells. Pressure is used to transfer the ink from the cells to the substrate, thus completing the printing process. Under the reciprocating scraping action of the squeegee, the ink is evenly scraped and transferred to the substrate, avoiding missed printing and improving print quality. This reciprocating swinging scraping of ink within the gravure plate facilitates even ink scraping and printing on the substrate, preventing missed printing and improving print quality. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 3 This is a side cross-sectional view of the integrated frame of this utility model.

[0019] Figure 4 This is a top view cross-sectional structural diagram of the scraping frame of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the scraping frame of this utility model.

[0021] In the diagram: 1. Base; 2. Placement plate; 3. Cylinder; 4. Push arm; 5. Concave body; 6. Bearing plate; 7. Integrated frame; 8. Connecting plate; 9. Lead screw; 10. Threaded sleeve; 11. Stepper motor; 12. Scraper; 13. Scraping frame; 14. Servo motor; 15. Worm gear; 16. Worm wheel; 17. Long connecting arm; 18. Short connecting arm; 19. Hinge shaft; 20. Swing arm. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] Example 1

[0026] Please see Figure 1-5 An embodiment of this utility model provides an adjustable squeegee for gravure printing, comprising a squeegee frame 13 and a servo motor 14. The servo motor 14 is mounted on the side wall of the squeegee frame 13 and serves as a power drive. A worm gear 15 is mounted on the output end of the servo motor 14. A worm wheel 16 is movably mounted inside the squeegee frame 13 on one side of the worm gear 15, and the worm gear 15 and the worm wheel 16 mesh with each other. A long connecting arm 17 is movably mounted on the side wall of the worm wheel 16. A short connecting arm 18 is movably mounted on the end of the long connecting arm 17 away from the worm wheel 16. A hinge shaft 19 is mounted on the end of the short connecting arm 18 away from the long connecting arm 17, and the hinge shaft 19 is fixedly connected to the short connecting arm 18 and movably connected to the squeegee frame 13. The hinge shaft 19 extends to the outside of the squeegee frame 13. A swing arm 20 is mounted on the surface of the hinge shaft 19, and a squeegee blade 12 is mounted on the bottom end of the swing arm 20. A base 1 is mounted on the outside of the squeegee frame 13.

[0027] The top of the base 1 is provided with a placement plate 2, and two sets of cylinders 3 are symmetrically arranged at the bottom of the placement plate 2. The cylinders 3 play a power driving role.

[0028] A recessed plate 5 is provided above the placement plate 2. A push arm 4 is provided at the output end of each cylinder 3, and the push arm 4 is connected to the recessed plate 5. A support plate 6 is installed on the side wall of the recessed plate 5, and an integrated frame 7 is provided at the top of the support plate 6.

[0029] The integrated frame 7 has a lead screw 9 installed inside it, and a stepper motor 11 is set at the top of the integrated frame 7. The stepper motor 11 plays the role of power drive, and the output end of the stepper motor 11 is connected to the lead screw 9.

[0030] A threaded sleeve 10 is fitted on the surface of the lead screw 9, and the threaded sleeve 10 is threadedly connected to the lead screw 9. A connecting plate 8 is provided on the side wall of the threaded sleeve 10, and the connecting plate 8 is connected to the scraping frame 13.

[0031] Ink is poured into the grooves on the surface of the gravure printing plate 5. These grooves contain cells and flat blank areas. A fan-shaped substrate is placed between the placement plate 2 and the gravure printing plate 5. The cylinder 3 is activated, causing the push arm 4 to move, which in turn moves the gravure printing plate 5, clamping the fan-shaped substrate between the plate and the placement plate 2 to prevent displacement during printing. Then, the stepper motor 11 is activated, causing the lead screw 9 to rotate. With the lead screw 9 threadedly connected to the threaded sleeve 10, the lead screw 9 moves the threaded sleeve 10 downwards. The threaded sleeve 10, through the connecting plate 8, moves the squeegee frame 13, the swing arm 20, and the squeegee 12 downwards, causing the squeegee 12 to move into the groove on the surface of the gravure printing plate 5. Finally, the servo motor 14 is activated, causing the worm gear... The worm gear 15 rotates, and under the meshing of the worm wheel 16, the long connecting arm 17 reciprocates, which in turn drives the short connecting arm 18 to reciprocate. The short connecting arm 18, through the hinge shaft 19, drives the swing arm 20 to reciprocate, which in turn drives the doctor blade 12 to reciprocate. The doctor blade 12 scrapes the ink from the flat blank area into the cells, and the pressure transfers the ink from the cells to the substrate, thus completing the printing process. Furthermore, the reciprocating scraping action of the doctor blade 12 ensures that the ink is evenly transferred to the substrate, preventing missed printing and improving printing quality. This reciprocating scraping action facilitates even ink scraping and printing on the substrate, preventing missed printing and improving printing quality.

[0032] Work steps

[0033] Ink is poured into the grooves on the surface of the gravure printing plate 5. These grooves contain cells and flat blank areas. A fan-shaped substrate is placed between the placement plate 2 and the gravure printing plate 5. A cylinder 3 drives a push arm 4, which in turn moves the gravure printing plate 5, clamping the fan-shaped substrate between the plate and the placement plate 2 to prevent displacement during printing. A stepper motor 11 drives a lead screw 9, which in turn moves a threaded sleeve 10 downwards. The threaded sleeve 10, through a connecting plate 8, moves the squeegee frame 13, the swing arm 20, and the squeegee 12 downwards, positioning the squeegee 12 within the grooves on the surface of the gravure printing plate 5. A servo motor 14 then drives... The worm gear 15 rotates, which drives the long connecting arm 17 to swing back and forth via the worm wheel 16. The long connecting arm 17 drives the short connecting arm 18 to swing back and forth. The short connecting arm 18 drives the swing arm 20 to swing back and forth via the hinge shaft 19. The swing arm 20 drives the doctor blade 12 to swing back and forth. The doctor blade 12 scrapes the ink on the flat blank area into the cells. The ink in the cells is transferred to the substrate by pressure, thus completing the printing work. Under the reciprocating scraping action of the doctor blade 12, the ink is evenly scraped and transferred to the substrate to avoid missing prints, thereby improving the printing quality. The above is the complete usage of the adjustable doctor blade device for gravure printing.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable doctoring device for intaglio printing comprising a doctoring frame and a servo motor, characterized in that: The side wall of the scraping frame is provided with a servo motor, the output end of the servo motor is provided with a worm, the inside of one side of the worm is movably provided with a worm wheel, the worm and the worm wheel are meshed with each other, the side wall of the worm wheel is movably provided with a long connecting arm, the end of the long connecting arm away from the worm wheel is movably provided with a short connecting arm, the end of the short connecting arm away from the long connecting arm is provided with a hinged shaft, the hinged shaft is fixedly connected with the short connecting arm, the hinged shaft is movably connected with the scraping frame, the hinged shaft extends to the outside of the scraping frame, the surface of the hinged shaft is provided with a swing arm, the bottom end of the swing arm is provided with a scraper, and the outside of the scraping frame is provided with a base.

2. An adjustable doctoring device for intaglio printing as claimed in claim 1, characterized in that: The top end of the base is provided with a placing plate, and the bottom end of the placing plate is symmetrically provided with two groups of air cylinders.

3. An adjustable doctoring device for intaglio printing as claimed in claim 2, wherein: The top of the placing plate is provided with a concave version body, the output end of the air cylinder is provided with a push arm, and the push arm is connected with the concave version body.

4. An adjustable doctoring device for a gravure printing press as claimed in claim 3, wherein: The side wall of the concave version body is provided with a bearing plate, and the top end of the bearing plate is provided with an integrated frame.

5. An adjustable doctoring device for a gravure printing press as claimed in claim 4, wherein: The inside of the integrated frame is movably provided with a lead screw, the top end of the integrated frame is provided with a stepping motor, and the output end of the stepping motor is connected with the lead screw.

6. An adjustable doctoring device for intaglio printing as claimed in claim 5, wherein: The surface of the lead screw is provided with a threaded sleeve, and the threaded sleeve is threadedly connected with the lead screw.

7. An adjustable doctoring device for intaglio printing as claimed in claim 6, wherein: The side wall of the threaded sleeve is provided with a connecting plate, and the connecting plate is connected with the scraping frame.

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