A flexographic plate roller pressure and wraparound adjustment mechanism

Abstract

The application discloses a flexographic plate roller pressure and overprint adjusting mechanism and relates to the technical field of flexographic plate roller pressure and overprint adjusting, aiming at solving the problems of poor repeatability, time-consuming adjustment and unreasonable mechanism design of the existing pressure adjusting mode, which is usually manually adjusted, and the problems of great influence of printing patterns on pressure and visible defects of printed products of the servo pressure adjusting mode. One side of a plate roller shaft is provided with a first bearing, the other side of the plate roller shaft is provided with a second bearing, the outside of the first bearing is provided with a plate roller driving side bearing eccentric sleeve, and the outside of the second bearing is provided with a plate roller operation side bearing eccentric sleeve. Further, the application also includes a swing lead screw seat arranged on one side of the plate roller driving side bearing eccentric sleeve and the plate roller operation side bearing eccentric sleeve, one side of the swing lead screw seat is provided with a first lead screw pair, and the other side of the plate roller driving side bearing eccentric sleeve is provided with a plate roller driving side bearing eccentric sleeve seat.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flexographic plate roller pressure and overprint adjustment, in particular to a flexographic plate roller pressure and overprint adjustment mechanism. BACKGROUND

[0002] The printing machinery is a collective term for printing machines, binding machines, plate making machines and other auxiliary mechanical equipment. These mechanical equipment have different performance and purpose, so the mechanical form of their composition is not completely the same. A modern printing machine is generally composed of plate mounting, ink coating, printing, paper conveying and other mechanisms. When it works, the text and images to be printed are made into a printing plate and mounted on the printing machine. Then the ink is applied to the places with text and images on the printing plate by manual or printing machine, and then transferred to paper or other printing materials directly or indirectly, so as to copy the same printing product as the printing plate. The flexographic printing machine is one kind of printing machinery. The flexographic printing machine uses a flexible plate and completes the printing process through a mesh ink transfer roller.

[0003] However, the existing pressure adjustment method is usually manual adjustment, which has poor repeatability and takes time to adjust. There is also a servo pressure adjustment method, which has unreasonable mechanism design, resulting in that the pressure is greatly affected by the printing pattern, and the printed product has visible defects. Therefore, it does not meet the existing needs. In view of this, the present application provides a flexographic plate roller pressure and overprint adjustment mechanism. SUMMARY

[0004] The present application aims to provide a flexographic plate roller pressure and overprint adjustment mechanism to solve the problem of the existing pressure adjustment method being usually manual adjustment, which has poor repeatability and takes time to adjust. There is also a servo pressure adjustment method, which has unreasonable mechanism design, resulting in that the pressure is greatly affected by the printing pattern, and the printed product has visible defects.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a flexographic plate roller pressure and overprint adjustment mechanism, comprising: a plate roller shaft, one side of the plate roller shaft is provided with a first bearing, the other side of the plate roller shaft is provided with a second bearing, the outside of the first bearing is provided with a plate roller transmission side bearing eccentric sleeve, the outside of the second bearing is provided with a plate roller operation side bearing eccentric sleeve;

[0006] Further comprising:

[0007] A swing lead screw seat is arranged on one side of the plate roller transmission side bearing eccentric sleeve and the plate roller operation side bearing eccentric sleeve. One side of the swing lead screw seat is provided with a first screw pair. The other side of the plate roller transmission side bearing eccentric sleeve is provided with a plate roller transmission side bearing eccentric sleeve seat. The other side of the plate roller operation side bearing eccentric sleeve is provided with a plate roller operation side bearing eccentric sleeve seat.

[0008] Second screw rod pair, which is arranged at one end of the plate roller driving side bearing eccentric sleeve base, one side of the plate roller operation side bearing eccentric sleeve base is provided with a gas cylinder, one end of the gas cylinder is provided with a second sliding block;

[0009] Plate roller operation side connecting base, which is arranged at one side of the second sliding block, one end of the plate roller operation side connecting base is provided with a fourth sliding block, one side of the fourth sliding block is provided with a fourth screw rod pair, one side of the fourth sliding block is provided with a plate roller operation side bottom plate.

[0010] Preferably, one side of the plate roller driving side bearing eccentric sleeve base is provided with a first sliding block, one side of the first sliding block is provided with a plate roller driving side connecting base, one end of the plate roller driving side connecting base is provided with a third sliding block, one side of the third sliding block is provided with a plate roller driving side bottom plate, one side of the plate roller driving side connecting base is provided with a third screw rod pair.

[0011] Preferably, the outer part of the plate roller shaft is provided with an anilox roller, one side of the anilox roller is provided with an impression roller.

[0012] Preferably, both ends of the plate roller shaft are provided with connecting columns, one end of the connecting column is provided with a fixed disc, and the fixed disc and the connecting column are weldedly connected, the surfaces of both ends of the plate roller shaft are provided with recessed fixing grooves, and the recessed fixing grooves are integral structures with the plate roller shaft.

[0013] Preferably, the inner wall of the recessed fixing groove is provided with a limiting block, and the limiting block is an integral structure with the recessed fixing groove, the outer wall of the fixed disc is provided with a limiting groove, and the limiting block is inserted into the inside of the limiting groove.

[0014] Preferably, the inside of both ends of the plate roller shaft is provided with cooling cavities, and the cooling cavities are one-end opening forms, the opening part of the cooling cavity is provided with a sealing plate, the outer edge of the sealing plate is provided with a sealing strip, the front surface of the sealing plate is provided with a taking handle, and the taking handle is an integral structure with the sealing plate, the inside of the cooling cavity is provided with cooling liquid.

[0015] Preferably, one side of the fixed disc is provided with a single-head fastener, the bottom surface inside the recessed fixing groove is provided with a fastener groove, and the fastener groove is an integral structure with the plate roller shaft, and the fixed disc is threadedly connected with the fastener groove through the single-head fastener.

[0016] Preferably, one side surface of the fixed disc is provided with a fastener hole, and the fastener hole penetrates through the fixed disc, one end of the fastener hole is provided with a fastener safety groove, and the fastener safety groove is an integral structure with the fixed disc.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] 1. The present application is characterized in that a first bearing with a bearing eccentric sleeve on the driving side of the plate roller and a second bearing with a bearing eccentric sleeve on the operating side of the plate roller are arranged on both sides of the plate roller shaft, the plate roller shaft is installed on the bearing eccentric sleeve on the driving side of the plate roller with the first bearing, and on the bearing eccentric sleeve on the operating side of the plate roller with the second bearing; the bearing eccentric sleeve on the driving side of the plate roller and the bearing eccentric sleeve on the operating side of the plate roller can be eccentrically swung on the bearing eccentric sleeve seat on the driving side of the plate roller and the bearing eccentric sleeve seat on the operating side of the plate roller through a swing screw rod seat; the swing screw rod seat swings in the V direction through a first screw rod pair, the bearing eccentric sleeve seat on the driving side of the plate roller guides in the Y direction on the driving side connecting seat of the plate roller through a first sliding block, and moves in the Y direction through a second screw rod pair, that is, the plate is adjusted horizontally; the bearing eccentric sleeve seat on the operating side of the plate roller guides in the Y direction on the operating side connecting seat of the plate roller through a second sliding block, and moves in the Y direction through a cylinder, which is also the plate roller disengaging mechanism; the driving side connecting seat of the plate roller guides in the X direction on the driving side bottom plate of the plate roller through a third sliding block, and moves in the X direction through a third screw rod pair; the operating side connecting seat of the plate roller guides in the X direction on the operating side bottom plate of the plate roller through a fourth sliding block, and moves in the X direction through a fourth screw rod pair; the V direction swing and the X direction movement are controlled by a servo, so that the plate roller, that is, the printing plate coaxial with the plate roller shaft, is single-adjusted to ink pressure or printing pressure; when changing the plate, only the printing plate sleeve is needed, without other accessories; the pressure and the registration are easily adjusted; after the equipment is adjusted during printing, there is no visible product defect; the present application solves the problems of poor repeatability and time-consuming adjustment in the existing pressure adjustment mode, and the unreasonable design of the servo pressure adjustment mode leads to a large influence of the pressure on the printing pattern, resulting in visible defects in the printed matter.

[0019] 2. The present application is characterized in that a connecting column with a fixed disc is arranged at both ends of the plate roller shaft, the fixed disc is inserted into the recessed fixed groove on the surface of the plate roller shaft, the limiting groove is aligned with the limiting block during insertion, the limiting block is inserted into the limiting groove, and then a single-head fastener is used for fixation; the limiting block is inserted into the limiting groove to limit the rotation of the fixed disc; when the connecting column rotates to drive the plate roller shaft to rotate, the stress pressure of the single-head fastener is reduced by the limiting effect, so that the single-head fastener is not easily deformed and damaged for a long time, the service life and safety are improved, the plate roller shaft and the connecting column are prevented from being stressed and deviated, and the stability is improved.

[0020] 3. The present application is characterized in that a cooling cavity is arranged in both ends of the plate roller shaft; in order to avoid the surface of the plate roller shaft from being overheated in hot weather for a long time, affecting the printing effect, cooling liquid is poured into the cooling cavity before the plate roller shaft is used, a sealing plate with a sealing strip on the edge is used to seal the opening, and the temperature of the plate roller shaft is reduced by the cooling liquid, so that the printing effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The overall split structure of the present application is shown in the schematic diagram;

[0022] Figure 2 It is the front view schematic diagram of the plate roller shaft of the present application;

[0023] Figure 3 It is the right side view of the plate roller shaft and connecting column connection of the present application;

[0024] Figure 4 It is the schematic diagram of the connecting column structure of the present application;

[0025] Figure 5 It is the right side view schematic diagram of the plate roller shaft of the present application;

[0026] In the figure: 1, plate roller shaft; 2, first bearing; 3, plate roller drive side bearing eccentric sleeve; 4, second bearing; 5, plate roller operation side bearing eccentric sleeve; 6, swing screw rod seat; 7, plate roller drive side bearing eccentric sleeve seat; 8, plate roller operation side bearing eccentric sleeve seat; 9, first screw rod pair; 10, first sliding block; 11, plate roller drive side connecting seat; 12, second screw rod pair; 13, second sliding block; 14, plate roller operation side connecting seat; 15, air cylinder; 16, third sliding block; 17, plate roller drive side bottom plate; 18, third screw rod pair; 19, fourth sliding block; 20, plate roller operation side bottom plate; 21, fourth screw rod pair; 22, anilox roller; 23, impression roller; 24, connecting column; 25, fixed disc; 26, single-head fastener; 27, limiting groove; 28, limiting block; 29, cooling cavity; 30, sealing plate; 31, taking handle; 32, fastener safety groove; 33, fastener hole; 34, recessed fixing groove; 35, fastener groove; 36, cooling liquid. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0028] Please refer to Figures 1-5 , the present application provides an embodiment: a soft printing plate roller pressure and overprint adjusting mechanism, comprising: a plate roller shaft 1, one side of the plate roller shaft 1 is provided with a first bearing 2, the other side of the plate roller shaft 1 is provided with a second bearing 4, the outside of the first bearing 2 is provided with a plate roller drive side bearing eccentric sleeve 3, and the outside of the second bearing 4 is provided with a plate roller operation side bearing eccentric sleeve 5;

[0029] Further comprising:

[0030] Swing screw rod seat 6 is arranged on one side of plate roller driving side bearing eccentric sleeve 3 and plate roller operation side bearing eccentric sleeve 5, one side of swing screw rod seat 6 is provided with first screw rod pair 9, the other side of plate roller driving side bearing eccentric sleeve 3 is provided with plate roller driving side bearing eccentric sleeve seat 7, the other side of plate roller operation side bearing eccentric sleeve 5 is provided with plate roller operation side bearing eccentric sleeve seat 8;

[0031] Second screw rod pair 12 is arranged on one end of plate roller driving side bearing eccentric sleeve seat 7, one side of plate roller operation side bearing eccentric sleeve seat 8 is provided with air cylinder 15, one end of air cylinder 15 is provided with second sliding block 13;

[0032] Plate roller operation side connecting seat 14 is arranged on one side of second sliding block 13, one end of plate roller operation side connecting seat 14 is provided with fourth sliding block 19, one side of fourth sliding block 19 is provided with fourth screw rod pair 21, one side of fourth sliding block 19 is provided with plate roller operation side bottom plate 20.

[0033] The plate roller, that is, the co-axial printing plate on plate roller shaft 1, is single-adjusted ink transfer pressure or printing pressure, and only printing plate sleeve is needed when changing the plate, without other accessories, the pressure and overprint adjustment are convenient, and no visible product defects are generated after the equipment is adjusted during printing, the problems that the existing pressure adjustment mode is usually manually adjusted, the repeatability is poor, the adjustment time is long, and the servo pressure adjustment mode is unreasonable in mechanism design, so that the pressure is greatly affected by the printing pattern, and the visible defects are generated in the printed matter are solved.

[0034] Please refer to Figure 1 One side of plate roller driving side bearing eccentric sleeve seat 7 is provided with first sliding block 10, one side of first sliding block 10 is provided with plate roller driving side connecting seat 11, one end of plate roller driving side connecting seat 11 is provided with third sliding block 16, one side of third sliding block 16 is provided with plate roller driving side bottom plate 17, one side of plate roller driving side connecting seat 11 is provided with third screw rod pair 18, plate roller driving side bearing eccentric sleeve seat 7 is guided in Y direction on plate roller driving side connecting seat 11 through first sliding block 10 and moves in Y direction, that is, transverse plate adjustment, plate roller operation side bearing eccentric sleeve seat 8 is guided in Y direction on plate roller operation side connecting seat 14 through second sliding block 13 and moves in Y direction through air cylinder 15, that is, plate roller changing and disengaging mechanism, plate roller driving side connecting seat 11 is guided in X direction on plate roller driving side bottom plate 17 through third sliding block 16 and moves in X direction through third screw rod pair 18.

[0035] Please refer to Figure 1The outer part of the plate roller shaft 1 is provided with a screen roller 22, and one side of the screen roller 22 is provided with an impression roller 23, so that the plate roller, that is, the printing plate coaxial on the plate roller shaft 1, is single-adjusted to ink transmission pressure or printing pressure, and the ink transmission pressure and the printing pressure correspond to the screen roller 22 pressure and the impression roller 23 pressure respectively, wherein all driving pairs are treated to eliminate gaps, and only a printing plate sleeve is needed when changing the plate, without other accessories, and the pressure and overprint adjustment is convenient, and there is no visible product defect after the equipment is adjusted during printing.

[0036] Please refer to Figure 2 、 3 The two ends of the plate roller shaft 1 are provided with connecting columns 24, one end of the connecting column 24 is provided with a fixed disc 25, and the fixed disc 25 is welded and connected with the connecting column 24, and the surface of the two ends of the plate roller shaft 1 is provided with a recessed fixed groove 34, and the recessed fixed groove 34 is an integral structure with the plate roller shaft 1, which has the effect of internal fixation and external protrusion for the fixed disc 25, avoiding accidental touch and improving safety.

[0037] Please refer to Figures 3-5 The inner wall of the recessed fixed groove 34 is provided with a limiting block 28, and the limiting block 28 is an integral structure with the recessed fixed groove 34, and the outer wall of the fixed disc 25 is provided with a limiting groove 27, and the limiting block 28 is inserted into the inside of the limiting groove 27, which has the effect of limiting and preventing rotation for the fixed disc 25.

[0038] Please refer to Figure 3 、 5 The inside of the two ends of the plate roller shaft 1 is provided with a cooling cavity 29, and the cooling cavity 29 is an open form at one end, the opening of the cooling cavity 29 is provided with a sealing plate 30, and the outer edge of the sealing plate 30 is provided with a sealing strip, the front surface of the sealing plate 30 is provided with a taking handle 31, and the taking handle 31 is an integral structure with the sealing plate 30, the inside of the cooling cavity 29 is provided with a cooling liquid 36, which reduces the temperature of the plate roller shaft 1, thereby improving the printing effect.

[0039] Please refer to Figure 3 、 5 One side of the fixed disc 25 is provided with a single-head fastener 26, the bottom surface inside the recessed fixed groove 34 is provided with a fastener groove 35, and the fastener groove 35 is an integral structure with the plate roller shaft 1, and the fixed disc 25 is threadedly connected with the fastener groove 35 through the single-head fastener 26, so as to fix the fixed disc 25.

[0040] Please refer to Figure 4 One side surface of the fixed disc 25 is provided with a fastener hole 33, and the fastener hole 33 penetrates through the fixed disc 25, one end of the fastener hole 33 is provided with a fastener safety groove 32, and the fastener safety groove 32 is an integral structure with the fixed disc 25, which has the effect of protection for the single-head fastener 26.

[0041] Working principle: when in use, the plate roller shaft 1 is installed on the plate roller driving side bearing eccentric sleeve 3 by the first bearing 2, and is installed on the plate roller operation side bearing eccentric sleeve 5 by the second bearing 4. The plate roller driving side bearing eccentric sleeve 3 and the plate roller operation side bearing eccentric sleeve 5 can be eccentrically swung on the plate roller driving side bearing eccentric sleeve seat 7 and the plate roller operation side bearing eccentric sleeve seat 8 through the swing screw rod seat 6. The swing screw rod seat 6 swings in the V direction through the first screw rod pair 9. The plate roller driving side bearing eccentric sleeve seat 7 is guided in the Y direction on the plate roller driving side connecting seat 11 through the first sliding block 10 and is moved in the Y direction through the second screw rod pair 12, that is, the plate is adjusted horizontally. The plate roller operation side bearing eccentric sleeve seat 8 is guided in the Y direction on the plate roller operation side connecting seat 14 through the second sliding block 13 and is moved in the Y direction through the air cylinder 15, which is also the plate roller disengaging mechanism. The plate roller driving side connecting seat 11 is guided in the X direction on the plate roller driving side bottom plate 17 through the third sliding block 16 and is moved in the X direction through the third screw rod pair 18. The plate roller operation side connecting seat 14 is guided in the X direction on the plate roller operation side bottom plate 20 through the fourth sliding block 19 and is moved in the X direction through the fourth screw rod pair 21. The V direction swing and the X direction movement are controlled by servo control, so that the plate roller, that is, the printing plate coaxial with the plate roller shaft 1, is single-adjusted to adjust the ink transfer pressure or the printing pressure. The ink transfer pressure and the printing pressure correspond to the screen roller 22 pressure and the impression roller 23 pressure respectively. All the transmission pairs are treated to eliminate the gap. When changing the plate, only the plate sleeve is needed, without other accessories. The pressure and the inking adjustment are convenient, and there is no visible product defect after the equipment is adjusted during printing.

[0042] The first bearing 2 is an axial limit bearing, which can be a deep groove ball bearing or other equivalent bearing or bearing combination.

[0043] The second bearing 4 is an axial limit bearing, which can be a cylindrical roller bearing NU series, a needle bearing or other equivalent bearing or bearing combination.

[0044] The first screw rod pair 9, the second screw rod pair 12, the third screw rod pair 18 and the fourth screw rod pair 21 can be a ball screw pair, a sliding screw pair or other form of screw pair.

[0045] In the process of installing the plate roller shaft 1 and the connecting column 24, the end of the connecting column 24 with the fixing disc 25 is inserted into the recessed fixing groove 34 on the end surface of the plate roller shaft 1, and in the process of insertion, the limiting groove 27 is aligned with the limiting block 28, the limiting block 28 is inserted into the limiting groove 27, thereby limiting the rotation of the fixing disc 25, avoiding stress deviation and improving stability, then the single-head fastener 26 is used for fixing, in order to avoid the surface of the plate roller shaft 1 from being overheated in hot weather for a long time, affecting the printing effect, before using the plate roller shaft 1, the cooling liquid 36 is poured into the cooling cavity 29, the sealing plate 30 with the sealing strip on the edge is used for sealing the opening, the cooling liquid 36 is used for reducing the temperature of the plate roller shaft 1, thereby improving the printing effect.

[0046] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. The presently disclosed embodiments are therefore considered in all respects to be illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalents of the claims are therefore intended to be embraced therein. No feature of the application is to be construed as limiting the scope of the claims to their precise equivalents.

Claims

1. A flexographic plate roller pressure and overprint adjustment mechanism, comprising a plate roller shaft (1), one side of the plate roller shaft (1) is provided with a first bearing (2), the other side of the plate roller shaft (1) is provided with a second bearing (4), the outside of the first bearing (2) is provided with a plate roller drive side bearing eccentric sleeve (3), the outside of the second bearing (4) is provided with a plate roller operation side bearing eccentric sleeve (5); characterized in that Further comprising: A swing screw rod seat (6) is arranged on one side of the plate roller drive side bearing eccentric sleeve (3) and the plate roller operation side bearing eccentric sleeve (5), one side of the swing screw rod seat (6) is provided with a first screw rod pair (9), the other side of the plate roller drive side bearing eccentric sleeve (3) is provided with a plate roller drive side bearing eccentric sleeve seat (7), the other side of the plate roller operation side bearing eccentric sleeve (5) is provided with a plate roller operation side bearing eccentric sleeve seat (8); A second screw rod pair (12) is arranged at one end of the plate roller drive side bearing eccentric sleeve seat (7), one side of the plate roller operation side bearing eccentric sleeve seat (8) is provided with a gas cylinder (15), one end of the gas cylinder (15) is provided with a second sliding block (13); A plate roller operation side connecting seat (14) is arranged on one side of the second sliding block (13), one end of the plate roller operation side connecting seat (14) is provided with a fourth sliding block (19), one side of the fourth sliding block (19) is provided with a fourth screw rod pair (21), one side of the fourth sliding block (19) is provided with a plate roller operation side bottom plate (20); One side of the plate roller drive side bearing eccentric sleeve seat (7) is provided with a first sliding block (10), one side of the first sliding block (10) is provided with a plate roller drive side connecting seat (11), one end of the plate roller drive side connecting seat (11) is provided with a third sliding block (16), one side of the third sliding block (16) is provided with a plate roller drive side bottom plate (17), one side of the plate roller drive side connecting seat (11) is provided with a third screw rod pair (18); Both ends of the plate roller shaft (1) are provided with connecting columns (24), one end of the connecting column (24) is provided with a fixed disc (25), and the fixed disc (25) and the connecting column (24) are weldedly connected, and the surfaces of both ends of the plate roller shaft (1) are provided with recessed fixing grooves (34) in an integral structure; The inner wall of the recessed fixing groove (34) is provided with a limiting block (28) in an integral structure, and the outer wall of the fixed disc (25) is provided with a limiting groove (27), and the limiting block (28) is inserted into the inside of the limiting groove (27); Both ends of the plate roller shaft (1) are provided with cooling cavities (29) in an open form, and the opening of the cooling cavity (29) is provided with a sealing plate (30), and the outer edge of the sealing plate (30) is provided with a sealing strip, the front surface of the sealing plate (30) is provided with a taking handle (31), and the taking handle (31) and the sealing plate (30) are in an integral structure, and the inside of the cooling cavity (29) is provided with a cooling liquid (36).

2. A flexographic plate roller pressure and wrap adjustment mechanism as claimed in claim 1 wherein: The outer part of the plate roller shaft (1) is provided with an anilox roller (22), one side of the anilox roller (22) is provided with an impression roller (23).

3. A flexographic plate roller pressure and wrap adjustment mechanism as claimed in claim 1 wherein: One side of the fixed disc (25) is provided with a single-head fastener (26), the bottom surface inside the recessed fixed groove (34) is provided with a fastener groove (35), and the fastener groove (35) is an integral structure with the plate roller shaft (1), and the fixed disc (25) is threadedly connected with the fastener groove (35) through the single-head fastener (26).

4. A flexographic plate roller pressure and wrap adjustment mechanism as claimed in claim 1 wherein: One side surface of the fixed disc (25) is provided with a fastener hole (33), and the fastener hole (33) penetrates through the fixed disc (25), one end of the fastener hole (33) is provided with a fastener safety groove (32), and the fastener safety groove (32) is an integral structure with the fixed disc (25).

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