Ink transferring and distributing system of offset press and offset press

Abstract

The invention provides an ink transferring and distributing system of an offset press and the offset press, the ink transferring and distributing system comprises an ink roller, an ink taking roller, a first ink distributing roller, a transition roller, a second ink distributing roller, an ink transferring rubber roller, a magnetic roller and a printing roller which are in contact and transmission in sequence, and the printing roller can drive the ink roller, the ink taking roller, the transition roller, the ink transferring rubber roller and the magnetic roller when rotating; when rotating, the printing roller can further drive the first ink distributing roller and the second ink distributing roller to rotate and move in a reciprocating mode in the axial direction. Compared with a traditional structure, an action of uniformly rubbing the ink is added under the condition that the number of the rollers in a limited space is not changed, so that the ink transferring and distributing effect is better, and the printing quality is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of printing machinery, and more specifically, relates to an ink transfer and ink distribution system of an offset printing press and an offset printing press. Background Art

[0002] In the existing technology of offset printing machines, the design of the ink transfer and ink distribution system is directly related to the printing quality and the operating efficiency of the machine. There are some problems that need to be solved in the existing ink transfer and ink distribution system. First of all, the existing ink transfer and ink distribution system is often uneven in structural design, resulting in a decline in printing quality. Secondly, some manufacturers have reported that ink cartridges are prone to ink leakage during actual use, and it is a burden for operators to clean up the leaked ink. Finally, the machine tool processing of the components that realize the clutch function of the ink transfer rubber roller is difficult, and not only the manufacturing cost is high, but also the maintenance cost is high. With the printing industry's pursuit of high-efficiency, low-cost, and environmentally friendly printing, the limitations of the existing ink transfer and ink distribution system technology have gradually become apparent, and a new ink transfer and ink distribution system design that can reduce costs, improve stability and durability is urgently needed. Summary of the invention

[0003] The purpose of the present invention is to provide an ink transfer and uniform ink system for an offset printing press and an offset printing press in view of the deficiencies in the prior art, so as to solve the problem of uneven ink distribution in the ink transfer and uniform ink system in the prior art.

[0004] In order to achieve the above-mentioned object, in a first aspect, the present invention provides an ink transfer and ink distribution system for an offset printing press, comprising:

[0005] The ink roller, the ink taking roller, the first ink string roller, the transition roller, the second ink string roller, the ink transfer rubber roller, the magnetic roller and the printing roller are contacted and driven in sequence. When the printing roller rotates, it can drive the ink roller, the ink taking roller, the transition roller, the ink transfer rubber roller and the magnetic roller to rotate only. When the printing roller rotates, it can also drive the first ink string roller and the second ink string roller to rotate and reciprocate along the axial direction;

[0006] The rear wall plate and the front wall plate are arranged opposite to each other, and the ink roller, the ink taking roller, the first ink string roller, the transition roller, the second ink string roller and the ink transfer rubber roller are all installed between the rear wall plate and the front wall plate;

[0007] A supporting component is provided on which the magnetic roller and the printing roller are rotatably arranged.

[0008] Optionally, the first ink string roller and the second ink string roller f have the same structure, and both include:

[0009] An ink-threading steel roller shaft, wherein the ink-threading steel roller shaft is non-rotatably connected between the rear wall plate and the front wall plate;

[0010] An ink-threading steel roller sleeve, wherein the ink-threading steel roller sleeve is movably sleeved outside the ink-threading steel roller shaft;

[0011] An 8-shaped oil groove, the 8-shaped oil groove is arranged on the outer surface of the ink-threading steel roller;

[0012] A keyway, the keyway being arranged on the inner surface of the ink-threading steel roller sleeve;

[0013] A fork nail, one end of which is embedded in the keyway, and the other end of which is embedded in the 8-shaped oil groove.

[0014] Optionally, a pair of first sliding grooves and a pair of second sliding grooves inclined downward are provided on the inner sides of the rear wall plate and the front wall plate;

[0015] A pair of first sliding blocks are provided at both ends of the first ink stringing roller, and the pair of first sliding blocks are slidably disposed in a pair of first sliding grooves;

[0016] A pair of second sliding blocks are provided at both ends of the second ink stringing roller, and the pair of second sliding blocks are slidably arranged in a pair of second sliding grooves;

[0017] A pair of third sliding blocks are provided at both ends of the transition roller, and the pair of third sliding blocks are slidably arranged in a pair of the second sliding grooves and are located above the second sliding blocks.

[0018] In a second aspect, the present invention provides an offset printing press, comprising:

[0019] The ink transfer and uniform ink system for an offset printing press according to the first aspect;

[0020] An ink box, the ink box is installed on the ink roller and is used to provide ink to the surface of the ink roller;

[0021] A driving component, the driving component is connected to the printing roller and is used to drive the printing roller to rotate;

[0022] A gearbox, wherein the ink transfer rubber roller is connected to the ink roller through transmission;

[0023] a first gear, the first gear being arranged at one end of the printing roller;

[0024] a second gear, the second gear being disposed at one end of the magnetic roller and meshing with the first gear;

[0025] A third gear, the third gear is arranged at one end of the ink transfer rubber roller and meshes with the second gear;

[0026] A clutch assembly is connected to the ink transfer rubber roller and is used to control the clutch action between the ink transfer rubber roller and the printing roller.

[0027] Optionally, the ink roller comprises:

[0028] An ink roller shaft body, the ink roller shaft body is rotatably connected between the rear wall plate and the front wall plate, the ink roller shaft body is a stepped shaft, the diameter of the middle part of the ink roller shaft body is larger than the diameter of the two ends, and the middle part of the ink roller shaft body is used for ink transfer;

[0029] A pair of ink roller sleeves, wherein the pair of ink roller sleeves are rotatably sleeved on both ends of the ink roller shaft;

[0030] A pair of sleeve fixing plates, a pair of ink roller sleeves are fixedly installed on the rear wall plate and the front wall plate through a pair of sleeve fixing plates.

[0031] Optionally, each of the pair of ink roller sleeves is provided with a flat portion that is inclined downward from one side close to the ink cartridge to the other side;

[0032] The ink cartridge comprises:

[0033] A pair of ink roller sleeves, wherein the ink roller sleeves are arranged between the ink roller sleeve and the middle part of the ink roller shaft body;

[0034] A pair of O-rings, wherein the O-rings are disposed between the ink roller sleeve and the middle portion of the ink roller shaft;

[0035] A pair of ink cartridge side plates, each of which is provided with a C-shaped opening a10 matching the flat position, and the ink cartridge side plates can be installed in the flat position through the C-shaped opening and fit with the side surface of the ink roller sleeve;

[0036] An ink cartridge body, wherein the ink cartridge body is connected between a pair of ink cartridge side plates, and the side edge of the oil scraper of the ink cartridge body is in contact with the ink cartridge side plates;

[0037] A pair of limiting plates, one end of the limiting plate is connected to the bottom of the clamping sleeve fixing plate, and the other end position corresponds to the bottom position of the clamping sleeve fixing plate.

[0038] Optionally, the ink cartridge comprises:

[0039] A pair of adjustment bases, the adjustment bases are detachably connected to the ferrule fixing plate;

[0040] The ink cartridge body is connected between the pair of adjustment bases.

[0041] A pair of ink cartridge side plates, each of which is provided with an arc groove matching the middle portion of the ink roller shaft;

[0042] A plurality of first anti-leakage screws, wherein the first anti-leakage screws are perpendicular to the ink roller shaft body and penetrate the adjustment base to contact the ink cartridge side plate, and are used to provide a first pressing force to make the arc groove of the ink cartridge side plate fit with the middle part of the ink roller shaft body;

[0043] A plurality of second anti-leakage screws are parallel to the ink roller shaft and penetrate the adjustment base to contact the ink cartridge side plate, and are used to provide a second clamping force to make the side of the ink cartridge side plate fit with the side of the oil scraper of the ink cartridge body.

[0044] Optionally, the clutch assembly comprises:

[0045] A clutch plate, one end of which is rotatably connected to the outer side of the front wall plate, the other end of the ink transfer rubber roller passes through the front wall plate and is rotatably connected to the middle part of the clutch plate, and the other end of the clutch plate is provided with a first upper inclined surface and a first lower inclined surface;

[0046] A limiting component, which is fixedly disposed on the front wall plate and has a position corresponding to the clutch plate, and is used to limit the clutch plate from rotating in a direction close to the magnetic roller;

[0047] A clutch pressure plate, one end of which is rotatably connected to the outer side of the front wall plate, and the other end of which is provided with a second upper inclined surface and a second lower inclined surface, wherein the second lower inclined surface n22 is used to contact with the first upper inclined surface so that the clutch plate and the limiting component are kept in contact, and the second upper inclined surface is used to contact with the first lower inclined surface so that the clutch plate and the limiting component are kept separated;

[0048] An elastic component is fixedly disposed on the front wall panel and connected to the clutch pressure plate, and is used to provide a restoring force to the clutch pressure plate to keep the second lower inclined surface in contact with the first upper inclined surface or to keep the second upper inclined surface in contact with the first lower inclined surface.

[0049] Optionally, the clutch assembly further includes:

[0050] A clutch handle, the clutch handle being arranged on the clutch plate;

[0051] A pressure plate handle, wherein the pressure plate handle is arranged on the clutch pressure plate.

[0052] Optionally, the limiting component includes:

[0053] A pressure-adjusting screw seat, the pressure-adjusting screw seat is fixedly arranged on the front wall plate;

[0054] A pressure-adjusting screw passes through the pressure-adjusting screw seat and corresponds to the first limiting surface, and the pressure-adjusting screw can adjust the extension length.

[0055] The beneficial effect of the present invention is that it provides an offset printing press ink transfer and ink uniformity system, comprising: an ink roller, an ink collection roller, a first ink string roller, a transition roller, a second ink string roller, an ink transfer rubber roller, a magnetic roller and a printing roller that are contacted and driven in sequence, and when the printing roller rotates, it can drive the ink roller, the ink collection roller, the transition roller, the ink transfer rubber roller and the magnetic roller to rotate only, and when the printing roller rotates, it can also drive the first ink string roller and the second ink string roller to rotate and reciprocate along the axial direction. Compared with the traditional structure, an action of rubbing ink uniformly is added under the condition that the number of rollers remains unchanged in a limited space, so that the ink transfer and ink uniformity effect is better and the printing quality is improved.

[0056] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0058] Figure 1 One of the schematic structural diagrams of the ink transfer and uniform ink distribution system of an offset printing press according to the first embodiment of the present invention is shown.

[0059] Figure 2 The second schematic structural diagram of the ink transfer and uniform ink distribution system of an offset printing press according to the first embodiment of the present invention is shown.

[0060] Figure 3 A schematic structural diagram of a first ink stringing roller according to Embodiment 1 of the present invention is shown.

[0061] Figure 4 A schematic structural diagram of a part of an ink transfer and uniform ink distribution system of an offset printing press according to the first embodiment of the present invention is shown.

[0062] Figure 5 One of the schematic structural diagrams of the ink cartridge according to the first embodiment of the present invention is shown.

[0063] Figure 6 A second schematic structural diagram of the ink cartridge according to the first embodiment of the present invention is shown.

[0064] Figure 7 Shows Figure 6 DD cross-sectional view.

[0065] Figure 8 Shows Figure 6 FF cross-sectional view.

[0066] Fig. 9 One of the schematic structural diagrams of a clutch assembly according to Embodiment 1 of the present invention is shown.

[0067] Fig.10 A schematic diagram of the engagement state of a clutch assembly according to the first embodiment of the present invention is shown.

[0068] Fig.11 A schematic diagram of a separation state of a clutch assembly according to Embodiment 1 of the present invention is shown.

[0069] Fig.12 A schematic structural diagram of an ink cartridge according to a first embodiment of the present invention is shown.

[0070] Fig.13 A second schematic structural diagram of the ink cartridge according to the first embodiment of the present invention is shown.

[0071] Fig.14 Shows Fig.13 GG cross-sectional view.

[0072] Fig.15 The schematic structural diagram of the ink transfer and ink distribution system of the offset printing press in the prior art is shown.

[0073] Description of the accompanying drawings in the prior art:

[0074] a', ink cartridge; b', ink roller; c', ink pick-up roller; d', transition roller; e', ink string roller; f', transition roller; g', ink transfer rubber roller; h', magnetic roller; i', printing roller; j', substrate; k', ink; m', gearbox.

[0075] Description of the accompanying drawings in the embodiments of the present invention:

[0076] a, ink cartridge; a1, ink cartridge side plate; a2, ink roller sleeve; a3, oil scraper plate; a4, ink cartridge connecting plate; a5, adjustment screw seat; a6, adjustment screw; a7, oil scraper plate; a8, anti-loosening spring; a9, O-ring; a10, C-shaped opening; a11, limit plate; a12, disassembly bottom plate; a13, longitudinal adjustment support plate; a14, transverse adjustment support plate; a15, first anti-leakage screw; a16, arc groove; a17, second anti-leakage screw;

[0077] b, ink roller; b1, ink roller shaft; b2, ink roller sleeve; b3, sleeve fixing plate; b4, flat position;

[0078] c. Ink roller;

[0079] d, first ink roller; d1, keyway; d2, ink roller shaft; d3, 8-shaped oil groove; d4, shaft sleeve; d5, fork nail; d6, ink roller sleeve;

[0080] e. Transition roller;

[0081] f. The second set of ink rollers;

[0082] g, ink transfer rubber roller; g1, third gear;

[0083] h, magnetic roller; h1, second gear;

[0084] i, printing roller; i1, first gear;

[0085] k. Ink;

[0086] m. Gearbox,

[0087] n, clutch assembly; n1, clutch plate; n11, first upper inclined surface; n12, first lower inclined surface; n2, clutch pressure plate; n21, second upper inclined surface; n22, second lower inclined surface; n3, spring seat; n4, spring;

[0088] n5, clutch handle; n6, pressure adjusting screw seat, n7, pressure adjusting screw; n8, plug screw; n9, clutch pulley; n10, pressure plate handle;

[0089] p, rear wall panel; p1, first chute; p2, second chute;

[0090] q. front wall panel;

[0091] r1, the first slider, r2, the second slider; r3, the third slider. DETAILED DESCRIPTION

[0092] In the prior art, the structure of the original roller ink transfer and ink distribution system is as follows: Fig.15 As shown in the figure, the arrow indicates the direction of movement, a' is the ink cartridge, b' is the ink roller (steel), c' is the ink taking roller (rubber), d' is the transition roller (steel), e' is the ink stringing roller (rubber), f' is the transition roller (steel), g' is the ink transfer rubber roller, h' is the magnetic roller with a magnetic resin plate, i' is the printing roller with a rubber cloth, j' is the printing material, k' is the ink, and m' is the gearbox.

[0093] The printing ink path is as follows: the ink k' is transferred to the magnetically attracted resin plate on the surface of the magnetic roller h' through the ink transfer and ink distribution system. The resin plate is composed of a 0.5mm iron plate plus 0.2-0.3mm resin. The resin part is the convex pattern. The ink is transferred through the resin plate to the rubber cloth evenly distributed on the surface of the printing roller i, and the pattern is then transferred to the substrate through the rubber cloth.

[0094] The motion constraints of each roller are as follows: the ink roller b', transition roller d', transition roller f', ink transfer rubber roller g', magnetic roller h', and printing roller i' only rotate around the axis, and their function is to transfer the ink to the substrate step by step. The ink roller e' rotates around the axis while making axial reciprocating motion, which not only transfers the ink but also rubs the ink evenly. The ink-taking roller c' rotates around the axis and periodically swings left and right, that is, it periodically contacts with the transition roller d' and the ink roller b'.

[0095] The transmission relationship of each roller is as follows: the printing roller i' acts as the driving wheel in this ink transfer and ink uniformity system, and the power is transmitted to the magnetic roller h' through the end gear, and the magnetic roller h' transmits it to the ink transfer rubber roller g' through the end gear. The power of the ink transfer rubber roller g' is transmitted to the ink roller b' through the synchronous wheel and synchronous belt after the speed change of the gearbox m' and the elastic coupling. At the same time, the ink transfer rubber roller g' and the transition roller f' have rotational friction, driving the transition roller f' to rotate around the axis. Correspondingly, e', d', and c' all rotate due to rotational friction. It is worth mentioning that the ink pick-up roller 'c' makes periodic left and right deflections, that is, the power is periodically provided by the transition roller d' and the ink roller b' with friction power to rotate around the axis.

[0096] The present invention aims to solve the above problems in the prior art, and through innovative design, the ink transfer and ink distribution system has a better ink distribution effect, reduces manufacturing and maintenance costs, solves the ink leakage problem, and optimizes the clutch components. The implementation of the present invention can not only improve the overall performance of the printing press, but also meet the market demand for efficient, economical, and environmentally friendly printing equipment, and has important practical value and broad market prospects.

[0097] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0098] Embodiment 1:

[0099] like Figure 1 and 2 As shown, this embodiment provides an ink transfer and ink distribution system for an offset printing press, comprising:

[0100] The ink roller b, the ink pick-up roller c, the first ink roller d, the transition roller e, the second ink roller f, the ink transfer rubber roller g, the magnetic roller h and the printing roller i are contacted and driven in sequence. When the printing roller i rotates, it can drive the ink roller b, the ink pick-up roller c, the transition roller e, the ink transfer rubber roller g and the magnetic roller h to rotate. When the printing roller i rotates, it can also drive the first ink roller d and the second ink roller f to rotate and reciprocate along the axial direction.

[0101] The rear wall plate p and the front wall plate q are arranged opposite to each other, and the ink roller b, the ink taking roller c, the first ink roller d, the transition roller e, the second ink roller f and the ink transfer rubber roller g are all installed between the rear wall plate p and the front wall plate q;

[0102] A supporting member (not shown in the figure) is provided on which the magnetic roller h and the printing roller i are rotatably disposed.

[0103] Specifically, the ink transfer and ink uniformity system optimizes the traditional one ink-stringing roller into two ink-stringing rollers under the principle of staggered distribution of steel rollers and rubber rollers. The transition rubber roller e is set to rotate only around the axis, and its function is to transfer ink k; the first ink-stringing roller d and the second ink-stringing roller f are set to rotate around the axis while reciprocating along the axial direction, and they can rub the ink k evenly while transferring the ink k. Compared with the traditional structure, an action of rubbing the ink k is added while the number of rollers remains unchanged in a limited space, so that the ink transfer and ink uniformity effect is better.

[0104] Alternatively, if Figure 3 As shown, the first ink roller d and the second ink roller f have the same structure, both comprising:

[0105] The ink-threading steel roller shaft d2 is non-rotatably connected between the rear wall plate p and the front wall plate q;

[0106] The ink-threading steel roller sleeve d6, the movable sleeve of the ink-threading steel roller sleeve d6 is arranged outside the ink-threading steel roller shaft d2;

[0107] 8-shaped oil groove d3, which is arranged on the outer surface of the ink-threading steel roller shaft d2;

[0108] Keyway d1, keyway d1 is provided on the inner surface of the ink-threading steel roller sleeve d6;

[0109] Fork nail d5, one end of the fork nail d5 is embedded in the key groove d1, and the other end is embedded in the 8-shaped oil groove d3.

[0110] In this embodiment, the "8-shaped oil groove" is a prior art structure, including a forward spiral groove and a reverse spiral groove, the forward spiral groove and the reverse spiral groove are connected end to end and the connection is smooth. The ink-stringing steel roller shaft d2 is machined with two sections of 8-shaped oil grooves d3 as guide grooves, one section is for backup, that is, when the other section of the guide groove is worn and fails, the ink-stringing steel roller shaft d2 can be assembled upside down to increase the service life of the shaft. The boss of the fork nail d5 is inserted into the 8-shaped oil groove d3, and the round head of the fork nail d5 is inserted into the keyway d1 of the ink-stringing steel roller sleeve d6. When the ink-stringing steel roller sleeve d6 is subjected to rolling friction from the upper group of rollers, it rotates around the axis, and at the same time, it performs axial reciprocating motion under the guidance of the fork nail d5 and the 8-shaped oil groove d3 to achieve uniform rubbing of the ink. A sleeve d4 is provided between the ink-stringing steel roller sleeve d6 and the ink-stringing steel roller shaft d2. In the conventional scheme, the sleeve d4 is made of copper. After 7 to 10 days of 24-hour non-stop operation, the copper powder produced by the wear of the copper sleeve d4 and the lubricating grease form sludge, which is blocked in the 8-shaped oil groove d3 of the ink-stringing steel roller shaft d2, hindering the movement of the fork nail d5, thereby causing the ink-stringing roller to become stuck and fail. In this embodiment, the material of the sleeve d4 is changed to Teflon, which has the characteristics of low friction coefficient, high temperature resistance, self-lubrication, etc., which solves the problem of the ink-stringing roller being stuck during use, greatly improves the service life, which can reach several months, and reduces the maintenance cost.

[0111] Alternatively, if Figure 1 and 4 As shown, a pair of first sliding grooves p1 and a pair of second sliding grooves p2 are provided on the inner sides of the rear wall plate p and the front wall plate q.

[0112] A pair of first sliding blocks r1 are provided at both ends of the first ink string roller d, and the pair of first sliding blocks r1 are slidably arranged in a pair of first sliding grooves p1;

[0113] A pair of second sliders r2 are provided at both ends of the second ink stringing roller f, and the pair of second sliders r2 are slidably arranged in a pair of second slide grooves p2;

[0114] A pair of third sliders r3 are provided at both ends of the transition roller e. The pair of third sliders r3 are slidably arranged in a pair of second slide grooves p2 and are located above the second sliders r2.

[0115] Specifically, the slider is fixed to the axis of each roller, and the slider is installed into the slide groove from top to bottom. The first ink roller d, transition roller e and second ink roller f are pressed down layer by layer by their own gravity. Even if the rubber roller is worn, they will contact each other two, which has a certain degree of adaptability. The steel sleeve or rubber sleeve of each roller rotates around the axis.

[0116] like Figure 1 and 5 As shown in FIG. 8 , this embodiment further provides an offset printing machine, comprising:

[0117] The ink transfer and uniform ink system of the offset printing press in this embodiment;

[0118] Ink cartridge a, which is mounted on ink roller b and is used to provide ink k to the surface of ink roller b;

[0119] A driving component (not shown in the figure), the driving component is connected to the printing roller i and is used to drive the printing roller i to rotate;

[0120] Gearbox m, the ink transfer rubber roller g and the ink roller b are connected through the gearbox m;

[0121] A first gear i1, the first gear i1 is arranged at one end of the printing roller i;

[0122] A second gear h1, which is disposed at one end of the magnetic roller h and meshes with the first gear i1;

[0123] A third gear g1, which is disposed at one end of the ink transfer rubber roller g and meshes with the second gear h1;

[0124] The clutch component n is connected to the ink transfer rubber roller g and is used to control the clutch action between the ink transfer rubber roller g and the printing roller i.

[0125] Optionally, the ink roller b comprises:

[0126] The ink roller shaft b1 is rotatably connected between the rear wall plate p and the front wall plate q. The ink roller shaft b1 is a stepped shaft. The diameter of the middle part of the ink roller shaft b1 is larger than the diameter of the two ends. The middle part of the ink roller shaft b1 is used for ink transfer.

[0127] A pair of ink roller sleeves b2, the pair of ink roller sleeves b2 are rotatably sleeved on both ends of the ink roller shaft b1;

[0128] A pair of sleeve fixing plates b3, a pair of ink roller sleeves b2 are fixedly installed on the rear wall plate p and the front wall plate q through a pair of sleeve fixing plates b3.

[0129] Optionally, each of the pair of ink roller sleeves b2 is provided with a flat portion b4 which is inclined downward from one side close to the ink cartridge a to the other side;

[0130] Ink cartridge a includes:

[0131] A pair of ink roller sleeves a2, the ink roller sleeves a2 are arranged between the ink roller sleeve b2 and the middle part of the ink roller shaft body b1;

[0132] A pair of O-rings a9, the O-rings a9 being arranged between the ink roller sleeve a2 and the middle of the ink roller shaft b1;

[0133] A pair of ink cartridge side plates a1, the ink cartridge side plates a1 are provided with a C-shaped opening a10 matched with the flat position b4, the ink cartridge side plates a1 can be installed on the flat position b4 through the C-shaped opening a10 and fit with the side surface of the ink roller sleeve a2;

[0134] The ink cartridge body is connected between a pair of ink cartridge side plates a1, and the side edge of the oil scraper a7 of the ink cartridge body is in contact with the ink cartridge side plates a1;

[0135] A pair of limiting plates a11, one end of the limiting plate a11 is connected to the bottom of the ferrule fixing plate b3, and the other end position corresponds to the bottom position of the ferrule fixing plate b3.

[0136] In this embodiment, the ink cartridge body adopts the existing structure, including: an oil scraper plate a3, an ink cartridge connecting plate a4, an adjustment screw seat a5, an adjustment screw a6, an oil scraper plate a7, and an anti-loosening spring a8. The ink cartridge side plate a1 and the ink cartridge connecting plate a4, as well as the ink cartridge side plate a1 and the adjustment screw seat a5 are connected by screws to form the overall frame of the ink cartridge. An O-type sealing ring a9 is provided between the ink roller sleeve a2 and the ink roller shaft body b1 as a spring pad. After the ink cartridge frame is assembled, the ink cartridge side plate a1 is inserted into the flat position b4 of the ink roller sleeve b2, and the ink cartridge frame is rotated clockwise until it is horizontal to complete the fixed installation. At the same time, the O-type sealing ring a9 is squeezed, and the ink cartridge side plate a1 is closely fitted with the ink roller sleeve a2. By adjusting the adjustment screw a6, the oil scraper plate a7 is closely fitted with the ink roller shaft body b1, so as to form a groove for storing ink. To replace the ink, just rotate the ink cartridge 45° counterclockwise and pull it out to clean the remaining ink from the previous batch for replacement. This structure is convenient for the operator to replace the ink and is suitable for frequent product changes, that is, the need to frequently change different inks.

[0137] Alternatively, if Figure 9-11 As shown, the clutch assembly n includes:

[0138] A clutch plate n1, one end of the clutch plate n1 is rotatably connected to the outer side of the front wall plate q, the other end of the ink transfer rubber roller g passes through the front wall plate q and is rotatably connected to the middle of the clutch plate n1, and the other end of the clutch plate n1 is provided with a first upper inclined surface n11 and a first lower inclined surface n12;

[0139] A limiting component, which is fixedly arranged on the front wall plate q and has a position corresponding to the clutch plate n1, and is used to limit the clutch plate n1 from rotating in a direction close to the magnetic roller h;

[0140] Clutch pressure plate n2, one end of the clutch pressure plate n2 is rotatably connected to the outer side of the front wall plate q, and the other end of the clutch pressure plate n2 is provided with a second upper inclined surface n21 and a second lower inclined surface n22, the second lower inclined surface n22 is used to contact with the first upper inclined surface n11 so that the clutch plate n1 and the limiting component are kept in contact, and the second upper inclined surface n21 is used to contact with the first lower inclined surface n12 so that the clutch plate n1 and the limiting component are kept separated;

[0141] The elastic component is fixedly disposed on the front wall panel q and connected to the clutch pressure plate n2, and is used to provide a restoring force to the clutch pressure plate n2 to keep the second lower inclined surface n22 in contact with the first upper inclined surface n11 or to keep the second upper inclined surface n21 in contact with the first lower inclined surface n12.

[0142] Optionally, the clutch assembly n further includes:

[0143] Clutch handle n10, the clutch handle n10 is arranged on the clutch plate n1;

[0144] The pressure plate handle n5 is arranged on the clutch pressure plate n2.

[0145] Optionally, the limiting component includes:

[0146] The pressure regulating screw seat n6 is fixedly arranged on the front wall plate q;

[0147] The pressure regulating screw n7 passes through the pressure regulating screw seat n6 and corresponds to the first limiting surface. The pressure regulating screw n7 can adjust the extension length.

[0148] In this embodiment, the elastic component includes a spring seat n3 and a spring n4. The clutch plate n1 is locked on the rear wall plate p or the front wall plate q by the plug screw n8, releasing the degree of freedom of rotation along the axis of the screw hole, that is, the clutch plate n1 can rotate around the screw hole, and the pressure-adjusting screw n7 limits the rotation angle of the clutch plate n1, that is, controls the pressure of the ink transfer rubber roller g and the resin plate on the surface of the magnetic roller h and the clutch state between them. When the clutch plate n1 contacts the pressure-adjusting screw n7, the clutch pressure plate n2 is subjected to the elastic force of the spring n4, and the pulley on the clutch pressure plate n2 supports the upper inclined surface of the clutch plate n1 to prevent the clutch plate n1 from separating from the pressure-adjusting screw n7. At the same time, the ink transfer rubber roller g contacts the resin plate on the surface of the magnetic roller h, and the ink path is connected, so that normal printing can be performed. When printing a small amount of products with a large number of batches, it is often accompanied by frequent replacement of ink and resin plates. Sometimes 2 to 3 batches of different products need to be replaced in one day, and sometimes different products need to be replaced every 5 to 6 days. As a consumable item, the rubber blanket will lose its hardness and wear on the surface after long-term use, which will affect the printing quality. Due to the different speed settings and production shifts of the printing press by the manufacturers, the replacement time of the rubber blanket is also different, and it is generally replaced every 10 to 30 days. When the clutch plate n1 is separated from the pressure adjusting screw n7, the clutch pressure plate n2 is subjected to the elastic force of the spring n4, and the clutch pulley n9 on the clutch pressure plate n2 supports the lower inclined surface of the clutch plate to prevent the clutch plate n1 from contacting the pressure adjusting screw n7. At the same time, the ink transfer rubber roller g is separated from the resin plate on the surface of the magnetic roller h, and the ink path is disconnected. The printing roller i and the magnetic roller h can be cleaned, or the resin plate and rubber blanket can be replaced. This structure replaces the traditional eccentric shaft clutch structure, reduces the processing difficulty, and reduces the manufacturing cost.

[0149] Embodiment 2:

[0150] like Figure 12-14 As shown, this embodiment provides an offset printing machine, which is different from the first embodiment in that the ink cartridge a comprises:

[0151] A pair of adjustment bases, the adjustment bases are detachably connected to the ferrule fixing plate b3;

[0152] The ink cartridge body is connected between a pair of adjustment bases.

[0153] A pair of ink cartridge side plates a1, the ink cartridge side plates a1 are provided with an arc groove a16 matching with the middle portion of the ink roller shaft b1;

[0154] A plurality of first anti-leakage screws a15, which are perpendicular to the ink roller shaft b1 and penetrate the adjustment base to contact the ink cartridge side plate a1, and are used to provide a first pressing force to make the arc groove a16 of the ink cartridge side plate a1 fit with the middle of the ink roller shaft b1;

[0155] A plurality of second anti-leakage screws a17 are parallel to the ink roller shaft b1 and penetrate the adjustment base to contact the ink cartridge side plate a1, and are used to provide a second pressing force to make the side of the ink cartridge side plate a1 fit with the side of the oil scraper a7 of the ink cartridge body.

[0156] In this embodiment, the adjustment base includes: a disassembly base plate a12, a longitudinal adjustment support plate a13, and a transverse adjustment support plate a14. The degree of fit between the scraper blade a7 and the ink roller shaft body b1 is controlled by the adjustment screw a6, which can control the thickness of the ink on the surface of the ink roller. The upper half of the scraper blade a7 is pressed on the adjustment screw seat a5 by the scraper blade pressure plate a3. The scraper blade pressure plate a3 and the adjustment screw seat a5 are of equal length. On this basis, the scraper blade a7 is extended by 0.5 mm at both ends. The ink cartridge side plate a1 made of Teflon is tightly fitted on both sides of the scraper blade a7 by the second anti-leakage screw a17 relative to the axial direction of the ink roller shaft body b1 to prevent ink from leaking sideways. The ink cartridge side plate a1 made of Teflon is tightly fitted on the ink roller shaft body b1 by the first anti-leakage screw a15 relative to the radial direction of the ink roller shaft body b1 to prevent ink from leaking obliquely. The advantage of this structure is that it is not easy to leak ink, but the disadvantage is that it is difficult to disassemble. However, in working condition 2, factories generally seldom change ink, and have higher requirements for leak prevention. This is suitable for producing a single product for many years, that is, working conditions where ink is not changed frequently.

[0157] The offset printing machine operation method in this embodiment is as follows:

[0158] First, press down the pressure plate handle n5 on the clutch pressure plate n2, and move the clutch handle n10 on the clutch plate n1 to separate the clutch plate from the pressure adjusting screw n7. The purpose of this operation is to separate the ink transfer rubber roller g from the resin plate on the surface of the magnetic roller h, disconnect the ink path, and facilitate the subsequent adjustment of the ink thickness.

[0159] Secondly, pre-adjust the adjustment screw a6 and the first anti-leakage screw a15, tighten them appropriately, make the initial state of the ink thin, and add ink to the ink cartridge a. Because the higher the speed of the ink roller b, the more ink is transferred per unit time, so set the gearbox m to low gear and start the machine. After starting, observe the thickness of the ink: if the ink color is light, the ink is thin, and it is necessary to loosen the adjustment screw a6 appropriately to increase the gap between the oil scraper and the ink roller b, thereby thickening the ink and making the ink color darker; if the ink color is darker, the ink is thick, and it is necessary to tighten the adjustment screw a6 appropriately to reduce the gap between the oil scraper and the ink roller b, thereby thinning the ink and making the ink color lighter. Repeat the operation until it is adjusted to the appropriate state.

[0160] Finally, press down the clutch handle n10 on the clutch pressure plate n2, and move the clutch handle on the clutch plate n1 to make the clutch plate contact with the pressure adjusting screw n7, so that the ink transfer rubber roller g contacts the resin plate on the surface of the magnetic roller h, connect the ink path, and start the product trial run. During the trial run, observe whether the color depth of the product is consistent with the sample. If the color is too light, loosen the pressure adjusting screw n7 to increase the contact pressure between the ink transfer rubber roller g and the resin plate on the surface of the magnetic roller h, thereby deepening the color of the pattern; if the color is too dark, tighten the pressure adjusting screw n7 to reduce the contact pressure between the ink transfer rubber roller g and the resin plate on the surface of the magnetic roller h, thereby making the color of the pattern lighter. Repeat the operation until the pattern of the trial product is indistinguishable from the pattern of the sample.

[0161] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. An ink transfer and uniform ink system for an offset printing press, characterized in that: include: The ink roller (b), the ink taking roller (c), the first ink string roller (d), the transition roller (e), the second ink string roller (f), the ink transfer rubber roller (g), the magnetic roller (h) and the printing roller (i) are contacted and driven in sequence. When the printing roller (i) rotates, it can drive the ink roller (b), the ink taking roller (c), the transition roller (e), the ink transfer rubber roller (g) and the magnetic roller (h) to rotate only. When the printing roller (i) rotates, it can also drive the first ink string roller (d) and the second ink string roller (f) to rotate and reciprocate along the axial direction; The rear wall plate (p) and the front wall plate (q) are arranged opposite to each other, and the ink roller (b), the ink taking roller (c), the first ink stringing roller (d), the transition roller (e), the second ink stringing roller (f) and the ink transfer rubber roller (g) are all installed between the rear wall plate (p) and the front wall plate (q); A supporting component, wherein the magnetic roller (h) and the printing roller (i) are rotatably arranged on the supporting component.

2. The ink transfer and uniform ink system for offset printing press according to claim 1, characterized in that: The first ink roller (d) and the second ink roller (f) have the same structure, and both include: An ink-threading steel roller (d2), the ink-threading steel roller (d2) is non-rotatably connected between the rear wall plate (p) and the front wall plate (q); An ink-threading steel roller sleeve (d6), wherein the ink-threading steel roller sleeve (d6) is movably sleeved on the outside of the ink-threading steel roller shaft (d2); An 8-shaped oil groove (d3), wherein the 8-shaped oil groove (d3) is provided on the outer surface of the ink-threading steel roller shaft (d2); A keyway (d1), wherein the keyway (d1) is provided on the inner surface of the ink-threading steel roller sleeve (d6); A fork nail (d5), one end of which is embedded in the keyway (d1), and the other end of which is embedded in the 8-shaped oil groove (d3).

3. The ink transfer and uniform ink system for offset printing press according to claim 1, characterized in that: A pair of first sliding grooves (p1) and a pair of second sliding grooves (p2) inclined downward are provided on the inner sides of the rear wall plate (p) and the front wall plate (q); A pair of first sliding blocks (r1) are provided at both ends of the first ink stringing roller (d), and the pair of first sliding blocks (r1) are slidably arranged in a pair of first sliding grooves (p1); A pair of second sliding blocks (r2) are provided at both ends of the second ink stringing roller (f), and the pair of second sliding blocks (r2) are slidably arranged in a pair of second sliding grooves (p2); A pair of third sliders (r3) are provided at both ends of the transition roller (e), and the pair of third sliders (r3) are slidably arranged in a pair of second slide grooves (p2) and are located above the second sliders (r2).

4. An offset printing machine, characterized in that: include: The ink transfer and uniform ink system for an offset printing press according to any one of claims 1 to 3; An ink cartridge (a), the ink cartridge (a) being mounted on the ink roller (b) and being used for providing ink (k) to the surface of the ink roller (b); a driving component, the driving component being connected to the printing roller (i) and being used for driving the printing roller (i) to rotate; A gearbox (m), wherein the ink transfer rubber roller (g) is connected to the ink roller (b) by transmission via the gearbox (m); A first gear (i1), wherein the first gear (i1) is arranged at one end of the printing roller (i); a second gear (h1), the second gear (h1) being arranged at one end of the magnetic roller (h) and meshing with the first gear (i1); a third gear (g1), the third gear (g1) being arranged at one end of the ink transfer rubber roller (g) and meshing with the second gear (h1); A clutch component (n), wherein the clutch component (n) is connected to the ink transfer rubber roller (g) and is used to control the clutch action of the ink transfer rubber roller (g) and the printing roller (i).

5. The offset printing machine according to claim 4, characterized in that: The ink roller (b) comprises: An ink roller shaft (b1), the ink roller shaft (b1) is rotatably connected between the rear wall plate (p) and the front wall plate (q), the ink roller shaft (b1) is a stepped shaft, the diameter of the middle portion of the ink roller shaft (b1) is larger than the diameters of the two ends, and the middle portion of the ink roller shaft (b1) is used for ink transfer; A pair of ink roller sleeves (b2), wherein the pair of ink roller sleeves (b2) are rotatably sleeved on both ends of the ink roller shaft (b1); A pair of sleeve fixing plates (b3), a pair of ink roller sleeves (b2) are fixedly installed on the rear wall plate (p) and the front wall plate (q) through a pair of sleeve fixing plates (b3).

6. The offset printing machine according to claim 5, characterized in that: A pair of ink roller sleeves (b2) are each provided with a flat portion (b4) which is inclined downward from one side close to the ink box (a) to the other side; The ink cartridge (a) comprises: A pair of ink roller sleeves (a2), wherein the ink roller sleeves (a2) are arranged between the ink roller sleeve (b2) and the middle part of the ink roller shaft body (b1); A pair of O-rings (a9), wherein the O-rings (a9) are disposed between the ink roller sleeve (a2) and the middle portion of the ink roller shaft (b1); A pair of ink cartridge side plates (a1), wherein the ink cartridge side plates (a1) are provided with a C-shaped opening (a10) matched with the flat position (b4), and the ink cartridge side plates (a1) can be installed on the flat position (b4) through the C-shaped opening (a10) and fit with the side surface of the ink roller sleeve (a2); An ink cartridge body, wherein the ink cartridge body is connected between a pair of ink cartridge side plates (a1), and a side edge of an oil scraper (a7) of the ink cartridge body is in contact with the ink cartridge side plates (a1); A pair of limiting plates (a11), one end of the limiting plate (a11) is connected to the bottom of the clamping sleeve fixing plate (b3), and the position of the other end corresponds to the bottom position of the clamping sleeve fixing plate (b3).

7. The offset printing machine according to claim 5, characterized in that: The ink cartridge (a) comprises: A pair of adjustment bases, the adjustment bases are detachably connected to the ferrule fixing plate (b3); The ink cartridge body is connected between the pair of adjustment bases. A pair of ink cartridge side plates (a1), wherein the ink cartridge side plates (a1) are provided with an arc groove (a16) matching with the middle portion of the ink roller shaft (b1); A plurality of first anti-leakage screws (a15), wherein the first anti-leakage screws (a15) are perpendicular to the ink roller shaft (b1) and penetrate the adjustment base to contact the ink cartridge side plate (a1), and are used to provide a first pressing force to make the arc groove (a16) of the ink cartridge side plate (a1) fit with the middle of the ink roller shaft (b1); A plurality of second anti-leakage screws (a17), wherein the second anti-leakage screws (a17) are parallel to the ink roller shaft (b1) and penetrate the adjustment base to contact the ink cartridge side plate (a1), and are used to provide a second clamping force to make the side of the ink cartridge side plate (a1) fit with the side of the oil scraper (a7) of the ink cartridge body.

8. The offset printing machine according to claim 4, characterized in that: The clutch assembly (n) comprises: A clutch plate (n1), one end of the clutch plate (n1) is rotatably connected to the outer side of the front wall plate (q), the other end of the ink transfer rubber roller (g) passes through the front wall plate (q) and is rotatably connected to the middle part of the clutch plate (n1), and the other end of the clutch plate (n1) is provided with a first upper inclined surface (n11) and a first lower inclined surface (n12); a limiting component, the limiting component being fixedly arranged on the front wall plate (q) and having a position corresponding to the clutch plate (n1), and being used for limiting the clutch plate (n1) from rotating in a direction close to the magnetic roller (h); A clutch pressure plate (n2), one end of the clutch pressure plate (n2) is rotatably connected to the outer side of the front wall plate (q), and the other end of the clutch pressure plate (n2) is provided with a second upper inclined surface (n21) and a second lower inclined surface (n22), the second lower inclined surface (n22) is used to contact with the first upper inclined surface (n11) so that the clutch plate (n1) and the limiting component are kept in contact, and the second upper inclined surface (n21) is used to contact with the first lower inclined surface (n12) so that the clutch plate (n1) and the limiting component are kept separated; An elastic component, wherein the elastic component is fixedly disposed on the front wall panel (q) and connected to the clutch pressure plate (n2), and is used to provide a restoring force to the clutch pressure plate (n2) so that the second lower inclined surface (n22) maintains contact with the first upper inclined surface (n11) or the second upper inclined surface (n21) maintains contact with the first lower inclined surface (n12).

9. The offset printing machine according to claim 8, characterized in that: The clutch assembly (n) further comprises: A clutch handle (n10), wherein the clutch handle (n10) is arranged on the clutch plate (n1); A pressure plate handle (n5), wherein the pressure plate handle (n5) is arranged on the clutch pressure plate (n2).

10. The offset printing machine according to claim 8, characterized in that: The limiting component comprises: A pressure regulating screw seat (n6), wherein the pressure regulating screw seat (n6) is fixedly arranged on the front wall plate (q); A pressure-adjusting screw (n7), wherein the pressure-adjusting screw (n7) passes through the pressure-adjusting screw seat (n6) and corresponds to the first limiting surface, and the pressure-adjusting screw (n7) can adjust the extension length.

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