Ink scraping device of photogravure press

Abstract

According to the ink scraping device of the photogravure press, the photogravure press comprises an ink box and a plate cylinder arranged on the ink box, the ink scraping device comprises a scraping plate box arranged on the ink box and an ink scraping plate set, the ink scraping plate set is connected with the scraping plate box through a locking mechanism, the ink scraping plate set comprises an ink scraping plate, and one end of the ink scraping plate is tightly attached to the outer wall of the plate cylinder; the scraper box is provided with a connecting plate located below the ink scraping plate, a scraper is rotationally arranged at the end, close to the plate cylinder, of the connecting plate, the scraper is arranged close to the plate cylinder and elastically connected with the connecting plate, and the end of the scraper is tightly attached to the lower surface of the ink scraping plate. The ink scraping plate can slide in the ink scraping plate box, when the ink scraping plate slides, the end, with residual ink, of the ink scraping plate can move towards the ink scraping plate, the end of the ink scraping plate is tightly attached to the lower surface of the ink scraping plate, the end, with the residual ink, of the ink scraping plate can be removed by the ink scraping plate when the ink scraping plate slides, and the ink scraping plate is elastically connected with the connecting plate. The scraping plate can be always tightly attached to the lower surface, with residual ink, of the ink scraping plate, and the phenomenon of gaps is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gravure printing machines, in particular to an ink scraping device of a gravure printing machine. Background Art

[0002] A gravure printing machine is a mechanical device that uses gravure for printing. In gravure printing, the gravure printing machine includes a plate cylinder, an impression cylinder and a doctor blade. The image part of the plate cylinder is concave, and the non-image part is convex. The ink is filled into the concave image part, and then the non-image part is scraped off by the doctor blade and evenly filled into the concave image part. Finally, the ink is transferred to the substrate through the pressure of the impression cylinder, thus completing the printing process.

[0003] The existing scraper plate is generally installed on the side of the ink tank through a connecting piece. The position of the scraper plate is fixed and cannot be adjusted. The end of the scraper plate is set at a suitable distance from the surface of the printing plate cylinder. A lot of ink remains on the scraper plate during the scraping process or at the end. If the residual ink is not cleaned in time, it will affect the subsequent scraping effect on the printing plate cylinder. If the scraper plate of the prior art needs to clean the residual ink, the scraper plate needs to be disassembled for cleaning, and the cleaning method is more troublesome. Utility Model Content

[0004] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides an ink scraping device for a gravure printing machine.

[0005] The technical solution of this utility model is as follows:

[0006] An ink scraping device for an intaglio printing press comprises a scraper box arranged on an ink box of the intaglio printing press and an ink scraping plate group slidably connected to the scraper box, the ink scraping plate group being connected to the scraper box through a locking mechanism, the ink scraping plate group comprising an ink scraping plate, one end of the ink scraping plate away from the scraper box being in close contact with an outer wall of a printing plate cylinder, and a length direction of the ink scraping plate being parallel to an axis of the printing plate cylinder;

[0007] The scraper box is provided with a connecting plate below the scraper plate. A scraper is provided at one end of the connecting plate close to the plate cylinder. The lower end of the scraper is hinged to the connecting plate, and the upper end can rotate and fit closely to the lower surface of the scraper plate. The length of the scraper plate is greater than that of the scraper plate.

[0008] The scraper plate is slidably connected in the scraper box. The scraper plate can slide toward the surface of the plate cylinder. The residual ink on the end of the scraper plate close to the plate cylinder can be scraped off by the sliding of the scraper plate. The scraper plate can be slid back and forth in the scraper box. After removing the residual ink, the position of the scraper plate and the plate cylinder can be adjusted and locked in the scraper box through the locking mechanism. This can achieve the removal of residual ink and reduce the influence of residual ink adhering to the scraper plate on subsequent scraping of the plate cylinder.

[0009] The connection structure between the scraper plate and the scraper box is that the distance between the locking mechanism and the scraper plate can be adjusted, and the surface of the locking mechanism close to the scraper plate is the locking surface. The locking mechanism can lock the scraper plate, thereby fixing the position of the scraper plate.

[0010] In order to reduce the wear caused by the connection between the scraper plate body and the locking mechanism and increase the service life of the scraper plate, the scraper plate group also includes a plug rod connected to the side of the scraper plate away from the printing plate cylinder. The plug rod is inserted into the scraper box and can slide. The locking surface is locked and connected to the outer surface of the plug rod.

[0011] The specific structure of the above-mentioned locking mechanism is that the locking mechanism includes an arc plate connected to one side of the scraper box through an elastic structure, and the locking surface is arranged on the side of the arc plate close to the insertion rod, which is convenient for locking or loosening the insertion rod through the arc plate to achieve position adjustment of the ink scraper.

[0012] Regarding the specific structure of the elastic structure, the elastic structure includes a locking rod, one end of which passes through the scraper box and is connected to the arc plate. It is elastically connected to the scraper box through a first elastic member. The length direction of the locking rod is perpendicular to the length direction of the insertion rod, which is convenient for directly plugging the arc plate and the insertion rod into connection.

[0013] The specific locking structure of the above-mentioned arc plate and the insertion rod is that the arc plate is close to the first rack on one side of the insertion rod, and the outer surface of the insertion rod is provided with a second rack matched with the first rack, the first rack is arranged at equal intervals along the axial direction of the arc plate, the first rack and the second rack are both arc-shaped racks, and the first rack is distributed at equal intervals along the length direction of the insertion rod, and the second rack is distributed at equal intervals along the length direction of the insertion rod.

[0014] The scraper and the ink scraper board have an angle to quickly remove the residual ink. For this reason, the scraper and the ink scraper board are set at an angle and cannot be perpendicular to the ink scraper board. If the scraper and the ink scraper board are perpendicular, the ink scraper board cannot slide in the scraper box.

[0015] The specific structure of the elastic connection between the scraper and the connecting plate is that the scraper is connected to the connecting plate through a second elastic member, and the second elastic member is located on a side of the scraper away from the plate cylinder.

[0016] In order to facilitate the locking rod to drive the arc plate to move and realize the rapid disassembly and locking of the arc plate and the plug rod, the first elastic member is sleeved on the outer side of the locking rod, one end of which is connected to the scraper box and the other end is connected to the outer side of the arc plate.

[0017] The angle of the scraper box in the ink box is adjustable, so that the angle between the scraper plate and the printing plate cylinder can be adjusted. The specific structure is that the scraper box is connected to the ink box through an adjusting mechanism, and the adjusting mechanism can be provided with multiple groups, and the angle of the scraper box is adjustable; the adjusting mechanism includes an adjusting seat arranged on the ink box, and two adjusting parts arranged along the sliding direction of the scraper plate are vertically provided on the adjusting seat, the upper end of the adjusting part is hinged to the scraper box, and the lower part is threadedly connected to the adjusting seat.

[0018] The utility model has the beneficial effect that the scraper can slide in the scraper box, and the sliding direction is toward the plate cylinder. When the scraper slides, the end of the scraper with residual ink will move toward the scraper, and the end of the scraper is in close contact with the lower surface of the scraper. The end of the scraper with residual ink will be removed by the scraper when sliding, and the scraper is elastically connected to the connecting plate, so that the scraper can always be in close contact with the lower surface of the scraper with residual ink, reducing the phenomenon of gap.

[0019] The arc plate of the locking mechanism can mesh with the insertion rod through the rack to achieve the locking of the insertion rod, and then the ink scraper is locked on the scraper box. In the prior art, the ink scraper is connected to one side of the plate cylinder by bolts. The bolts will loosen after long-term use, causing the ink scraper to loosen, affecting the phenomenon of uniform scraping of the rolling plate. However, the first rack on the arc plate and the second rack on the insertion rod are meshed, so that the loose phenomenon will not occur.

[0020] Moreover, the end of the scraper plate close to the plate cylinder will be worn out due to long-term contact with the plate cylinder and ink, which will increase the distance between the scraper plate and the plate cylinder and affect the effect of evenly scraping the ink on the surface of the plate cylinder. Therefore, by fine-tuning the position of the insertion rod, the end of the scraper plate close to the plate cylinder is adjusted to a suitable position with the surface of the plate cylinder, and then the first rack of the arc plate is inserted into the second rack for meshing, so as to fix the position of the scraper plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In the attached picture:

[0022] Figure 1 It is a top view;

[0023] Figure 2 for Figure 1 AA section structural diagram;

[0024] Figure 3 It is a schematic diagram of the structure of the ink scraping device;

[0025] Figure 4 for Figure 3 The enlarged structural diagram at A in the middle;

[0026] Figure 5 It is a schematic diagram of the locking mechanism structure;

[0027] The components represented by the reference numerals in the figure are:

[0028] 1. Ink box; 2. Plate cylinder; 3. Impression cylinder; 4. Scraper box; 5. Scraper plate assembly; 51. Scraper plate; 52. Insert rod; 53. Second rack; 6. Scraper; 7. Connecting plate; 8. Arc plate; 81. First rack; 9. Locking rod; 10. First elastic member; 11. Second elastic member; 12. Adjusting member; 13. Adjusting seat. DETAILED DESCRIPTION

[0029] See also Figure 1 , Figure 2 The ink scraping device of a gravure printing machine shown in the figure comprises an ink box 1 and a plate cylinder 2 arranged on the ink box 1, the ink box 1 and the plate cylinder 2 are prior art, and an impression cylinder 3 is also arranged above the plate cylinder 2 of the prior art, and the ink scraping device comprises a scraper box 4 arranged on the ink box 1 and an ink scraper plate group slidably connected with the scraper box 4.

[0030] The scraper plate group includes a scraper plate 51 and an insertion rod 52 connected to the side of the scraper plate 51 away from the plate cylinder 2. The end of the scraper plate 51 away from the plate cylinder 2 is adapted to the inside of the scraper box 4, so that the scraper plate 51 can move in a straight line in the scraper box 4 without shaking. The scraper box 4 is a box structure, which is obliquely installed on the upper port side of the ink box 1 and is located on the side of the plate cylinder 2. The scraper box 4 is provided with an opening on the side close to the plate cylinder 2. The scraper plate 51 is connected to the scraper box 4 through a locking mechanism. The spacing of the locking mechanism relative to the scraper plate 51 can be adjusted, and the surface of the locking mechanism close to the scraper plate 51 is a locking surface. The end of the scraper plate 51 away from the scraper box 4 is in close contact with the outer wall of the plate cylinder 2, and the length direction of the scraper plate 51 is parallel to the axis of the plate cylinder 2.

[0031] See also Figure 3 As shown, a connecting plate 7 located below the ink scraper 51 is provided on one side of the scraper box 4 near the lower opening. The connecting plate 7 is arranged parallel to the scraper box 4 and the ink scraper 51. A scraper 6 is rotatably provided at one end of the connecting plate 7 near the plate cylinder 2. The scraper 6 is a long plate-shaped structure used to scrape off the ink remaining at the end of the ink scraper 51. The scraper 6 is arranged near the plate cylinder 2 and is elastically connected to the connecting plate 7. Its end is always in close contact with the lower surface of the ink scraper 51 under the action of elasticity, and its length is greater than the length of the ink scraper 51. The specific structure of the elastic connection between the scraper 6 and the connecting plate 7 is that the scraper 6 is connected to the connecting plate 7 through a second elastic member 11. The second elastic member 11 is a compression spring. The second elastic member 11 is located on the side of the scraper 6 away from the plate cylinder 2.

[0032] The scraper plate 51 and the plate cylinder 2 have an angle so that the ink on the surface of the plate cylinder 2 can be evenly scraped into the graphic part of the plate cylinder 2. In this embodiment, the angle between the scraper plate 51 and the plate cylinder 2 is set at 30-60°, and the insertion rod 52 and the scraper plate 51 are arranged in the same horizontal plane, so that when the first rack 81 of the arc plate 8 is separated from the second rack 53 of the insertion rod 52, the scraper plate 51 can be moved in the scraper box 4 by pushing and pulling the insertion rod 52, so that the scraper 6 can clean the ink remaining at the end of the scraper plate 51.

[0033] See also Figure 3 , Figure 4 and Figure 5 As shown, the effects that can be achieved according to the above structure are as follows: the ink scraper 51 can slide in the scraper box 4, and the sliding direction is toward the plate cylinder 2. When the ink scraper 51 slides, the end of the ink scraper 51 with residual ink will move toward the scraper 6, and the end of the scraper 6 is in close contact with the lower surface of the ink scraper 51. The end of the ink scraper 51 with residual ink will be removed by the scraper 6 when sliding, and the scraper 6 is elastically connected to the connecting plate 7, so that the scraper 6 can always be in close contact with the lower surface of the ink scraper 51 with residual ink, reducing There is less gap, and the arc plate 8 of the locking mechanism can mesh with the insertion rod 52 through the rack to achieve the locking of the insertion rod 52, and then the ink scraper 51 is locked on the scraper box 4. The prior art connects the ink scraper 51 to one side of the plate cylinder 2 by bolts. The bolts will loosen after long-term use, causing the ink scraper 51 to loosen, affecting the uniform scraping of the rolling plate. However, the first rack 81 on the arc plate 8 and the second rack 53 on the insertion rod 52 are meshed, so that no loosening will occur.

[0034] See also Figure 3 As shown, the connection structure between the above-mentioned scraper plate 51 and the scraper box 4 is that a rod 52 is passed through the scraper box 4, and the rod 52 is passed through the opposite side of the lower opening. One end of the rod 52 is connected to the scraper plate 51, and its length direction is consistent with the sliding direction of the scraper plate 51. The output end of the locking mechanism is pressed against the outer surface of the rod 52, which can tighten the rod 52 and thereby fix the position of the scraper plate 51.

[0035] In the prior art, the ink scraper 51 is connected to one side of the plate cylinder 2 by bolts. After long-term use, the bolts will loosen, causing the ink scraper 51 to loosen, affecting the phenomenon of uniform ink scraping on the plate. Figure 3 , Figure 4 and Figure 5As shown, in this embodiment, the first rack 81 on the arc plate 8 and the second rack 53 on the insertion rod 52 are meshed, and there will be no loosening phenomenon. Specifically, with regard to the specific structure of the locking mechanism, the locking mechanism includes the arc plate 8 and the locking rod 9. The first rack 81 is provided on the side of the arc plate 8 close to the insertion rod 52. The first rack 81 forms a locking surface. The first rack 81 is arranged at equal intervals along the axis direction of the arc plate 8. The outer surface of the insertion rod 52 is provided with a second rack 53 meshed with the first rack 81. The distance between the arc plate 8 and the insertion rod 52 is adjustable. The distribution direction of the first rack 81 and the second rack 53 is that both the first rack 81 and the second rack 53 are arc racks, and the first rack 81 is distributed at equal intervals along the length direction of the insertion rod 52, and the second rack 53 is distributed at equal intervals along the length direction of the insertion rod 52. By fine-tuning the position of the insertion rod 52, the end of the ink scraper 51 close to the printing plate cylinder 2 is adjusted to a suitable position with the surface of the printing plate cylinder 2, and then the first rack 81 of the arc plate 8 is inserted into the second rack 53 for meshing, so as to fix the position of the ink scraper 51.

[0036] See also Figure 5 As shown, the locking rod 9 is inserted into one side of the scraper box 4 and connected to the scraper box 4 through the first elastic member 10. One end of the locking rod 9 is connected to the side of the arc plate 8 away from the first rack 81. In order to facilitate the locking rod 9 to drive the arc plate 8 to move and realize the rapid disassembly and locking of the arc plate 8 and the plug 52, the first elastic member 10 is also a compression spring. The first elastic member 10 is sleeved on the outer side of the locking rod 9, one end of which is connected to the scraper box 4, and the other end is connected to the outer side of the arc plate 8. Regarding the specific installation position of the locking rod 9, the length direction of the locking rod 9 is perpendicular to the length direction of the plug 52, so as to facilitate the direct insertion of the first rack 81 of the arc plate 8 into the second plug.

[0037] See also Figure 3 As shown, the scraper 6 and the ink scraper plate 51 have an angle so that the residual ink can be quickly cleaned. For this reason, the scraper 6 is set to have an angle with the ink scraper plate 51, and cannot be perpendicular to the ink scraper plate 51. The scraper 6 and the ink scraper plate 51 being perpendicular will cause the ink scraper plate 51 to be unable to slide in the scraper box 4. The angle of the scraper box 4 in the ink box 1 is adjustable, so that the angle between the ink scraper plate 51 and the plate cylinder 2 is adjustable.

[0038] The above-mentioned specific structure is that the scraper box 4 is connected to the ink box 1 through an adjustment mechanism, and the angle of the scraper box 4 is adjustable; the adjustment mechanism can be set in multiple groups to facilitate the support of the scraper box 4, and the adjustment mechanism includes an adjustment seat 13 arranged on the ink box 1, and two adjustment members 12 arranged along the sliding direction of the ink scraper 51 are vertically arranged on the adjustment seat 13. The adjustment member 12 is an adjustment bolt, and the upper end of the adjustment member 12 is hinged to the scraper box 4, and the lower part is threadedly connected to the adjustment seat 13. The two adjustment members 12 are in the same vertical plane with the insertion rod 52. The two adjustment members 12 are arranged front and back. By tightening or loosening, the positions of the upper ends are not at the same height , which can realize the angle adjustment of the scraper box 4, and then realize the angle adjustment of the ink scraper plate 51 and the plate cylinder 2. For example, the upper ends of the two adjusting parts 12 are flush, the scraper box 4 is in a horizontal state, so that the ink scraper plate 51 is also in a horizontal state, and the end of the ink scraper plate 51 is perpendicular to the axis of the plate cylinder 2. If the upper end of the adjusting part 12 close to the plate cylinder 2 is lower than the upper end of the adjusting part 12 away from the plate cylinder 2, the end of the ink scraper plate 51 close to the plate cylinder 2 is lower than the end away from the plate cylinder 2, so that the end of the ink scraper plate 51 forms an angle with the surface of the plate cylinder 2, which is convenient for scraping the ink on the surface of the plate cylinder 2 evenly.

Claims

1. A scraper device for a gravure printing machine, characterized in that: The invention comprises a scraper box (4) arranged on an ink box (1) of a gravure printing machine and an ink scraper plate group slidably connected to the scraper box (4), wherein the ink scraper plate group is connected to the scraper box (4) via a locking mechanism, and the ink scraper plate group comprises an ink scraper plate (51), wherein one end of the ink scraper plate (51) away from the scraper box (4) is in close contact with the outer wall of a printing plate cylinder (2), and the length direction of the ink scraper plate (51) is parallel to the axis of the printing plate cylinder (2); The scraper box (4) is provided with a connecting plate (7) below the ink scraper (51); a scraper (6) is provided at one end of the connecting plate (7) close to the plate cylinder (2); the lower end of the scraper (6) is hinged to the connecting plate (7); the upper end of the scraper (6) is rotatable and closely attached to the lower surface of the ink scraper (51); and the length of the scraper (6) is greater than the length of the ink scraper (51).

2. The ink scraping device of a gravure printing machine according to claim 1, characterized in that: The distance between the locking mechanism and the ink scraper (51) can be adjusted, and the surface of the locking mechanism close to the ink scraper (51) is a locking surface.

3. The ink scraping device of a gravure printing machine according to claim 2, characterized in that: The ink scraper assembly also includes an insertion rod (52) connected to the side of the ink scraper (51) away from the printing plate cylinder (2); the insertion rod (52) is inserted into the scraper box (4) and is slidable; the locking surface is locked and connected to the outer surface of the insertion rod (52).

4. The ink scraping device of the gravure printing machine according to claim 3, characterized in that: The locking mechanism comprises an arc-shaped plate (8) connected to one side of the scraper box (4) through an elastic structure, and the locking surface is arranged on the side of the arc-shaped plate (8) close to the insertion rod (52).

5. The ink scraping device of the gravure printing machine according to claim 4, characterized in that: The elastic structure comprises a locking rod (9), one end of which passes through the scraper box (4) and is connected to the arc plate (8), and the locking rod (9) is elastically connected to the scraper box (4) via a first elastic member (10).

6. The ink scraping device of a gravure printing machine according to claim 5, characterized in that: A first rack (81) is provided on one side of the arc-shaped plate (8) close to the insertion rod (52), and a second rack (53) meshing with the first rack (81) is provided on the outer surface of the insertion rod (52).

7. The ink scraping device of a gravure printing machine according to claim 1, characterized in that: The scraper (6) has an included angle with the ink scraper (51) and cannot be perpendicular to the ink scraper (51).

8. The ink scraping device of a gravure printing machine according to claim 1, characterized in that: The scraper (6) is connected to the connecting plate (7) via a second elastic member (11), and the second elastic member (11) is located on a side of the scraper (6) away from the printing plate cylinder (2).

9. The ink scraping device of a gravure printing machine according to claim 5, characterized in that: The first elastic member (10) is sleeved on the outer side surface of the locking rod (9), one end of which is connected to the scraper box (4) and the other end of which is connected to the outer side surface of the arc plate (8).

10. The ink scraping device of a gravure printing machine according to claim 1, characterized in that: The scraper box (4) is connected to the ink box (1) through an adjustment mechanism, and the adjustment mechanism includes an adjustment seat arranged on the ink box (1), on which two adjustment members (12) are vertically arranged along the sliding direction of the ink scraper (51), and the upper end of the adjustment member (12) is hinged to the scraper box (4), and the lower part is threadedly connected to the adjustment seat (13).

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