Printing dampening device

Abstract

The utility model relates to a printing dampening device which is characterized in that a water transfer clutch movable frame and a dampening clutch movable support are arranged on a dampening main support, a water source roller and a metering roller are connected to the water transfer clutch movable frame, a dampening roller is connected to the dampening clutch movable support, and the dampening roller is located on a moving path where the metering roller moves forwards along with the water transfer clutch movable frame to be combined and pressed; the connecting rod is hinged to the dampening clutch movable support, a return stress part is arranged on the connecting rod, and a return force application part is arranged on the water transmission clutch movable frame. According to the dampening main support, only the clutch movement driving device is needed to drive the water conveying clutch movable frame to move forwards and backwards, the metering roller can be driven to move forwards and backwards, and the water conveying clutch movable frame can move forwards to drive the dampening clutch movable support and the dampening roller to move forwards together. The water conveying clutch movable frame can be matched with the connecting rod to drive the dampening clutch movable support and the dampening roller to return together, and dampening clutch actions of the dampening clutch movable support and the dampening roller do not need to be additionally provided with a driving structure and do not need to be additionally and independently provided with a power source.

Description

Technical Field

[0001] The utility model relates to a dampening device for printing equipment. Background Art

[0002] In printing equipment, the plate roller needs to be dampened with dampening liquid to cooperate with the printing operation. The dampening liquid is output from the water box by the water source roller, and is transferred to the water roller or the plate roller behind it through the metering roller. The water roller then transfers the dampening liquid to the plate roller for dampening.

[0003] During the printing process, the printing process needs to be paused. During this time, the dampener roller and plate roller must be separated to cut off the water supply. When printing resumes, the dampener roller and plate roller must be brought together to press the water supply. Furthermore, if the metering roller and dampener roller remain in contact during the printing pause, wear on the roller surfaces increases, shortening their service life. This structure, which separates and presses the rollers, is complex and requires multiple power sources.

[0004] In addition, during the transmission process of the dampening solution, the surfaces of the water source roller, metering roller, water roller, etc. will wear, and the combined pressure of the water transmission will change, affecting the water transmission effect. If the combined pressure is adjusted, the transmission structure will change. For example, if a pair of gears are used for direct transmission, the expansion or wear of the rubber water roller will cause the two gears to be unable to reach the ideal transmission state of tangent to the pitch circle. The transmission between the gears will vibrate, shake and other problems, affecting the stability of water transmission and causing problems such as printing gear levers. Utility Model Content

[0005] In view of the technical problems existing in the background technology, the technical problem solved by the present invention is to provide a printing dampening device with a relatively simplified power structure for the water transmission (such as water dampening) clutch action, which does not require excessive power sources.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions: a printing dampening device, including a dampening main bracket, a water source roller, a metering roller and a water roller, the dampening main bracket is arranged on the plate clutch guide rail, and the dampening main bracket is equipped with a plate roller station in the plate forward direction, which is characterized by: further comprising a water transfer clutch movable bracket and a water clutch movable bracket, the water transfer clutch movable bracket and the water clutch movable bracket are arranged on the dampening main bracket, the water source roller and the metering roller are cooperatively installed on the water transfer clutch movable bracket, and the water roller is installed on the water clutch movable bracket. The water applying roller is arranged on the movable bracket, and the water applying roller is arranged on the front side of the metering roller. The water applying roller is located on the moving path of the metering roller as the water transmission clutch movable bracket moves forward and presses. The water transmission clutch movable bracket is connected to the clutch moving drive device through transmission. A connecting rod is provided between the water transmission clutch movable bracket and the water applying clutch movable bracket. The connecting rod is hinged to the water applying clutch movable bracket. A retracting force-bearing part is provided on the connecting rod. A retracting force-applying part is provided on the water transmission clutch movable bracket. The retracting force-applying part is arranged on the front side of the retracting force-bearing part, and a separation distance is left between the retracting force-applying part and the retracting force-bearing part.

[0007] The following various optimizations or supplementary explanations can be made on the above technical solutions respectively.

[0008] For example, the water-applying clutch movable bracket is a reciprocating movable bracket without an independent power source. The water-applying clutch movable bracket is also provided with a water-distributing roller for cooperating with the water-applying roller to distribute water. The water-applying roller is a passive rotating roller without an independent power source. The water-applying clutch movable bracket adopts a water-applying clutch swing-arm bracket. The swing axis of the water-applying clutch swing-arm bracket is coaxially arranged with the axis of the water-distributing roller. The water-distributing roller is arranged on the lower side of the water-applying roller, and the water-distributing roller is connected to a water-distributing driving device through its transmission. The water-applying clutch movable bracket and the water-applying clutch movable bracket are respectively in the forward-moved position state, and the distance between the retracting force-applying part and the retracting force-receiving part is the separation distance. The clutch movable driving device is connected to the dampening main bracket.

[0009] In addition, a limiting mechanism is provided between the dampening main bracket and the connecting rod to limit the forward and backward movement of the connecting rod. For example, the limiting mechanism includes a limiting cam and a limiting hole. The limiting hole and limiting cam are respectively provided on the connecting rod and the dampening main bracket. The limiting cam is located in the limiting hole, and the limiting hole has a limited movable space for the limiting cam to move forward and backward relative to each other. The limiting hole is provided on the connecting rod, and the dampening main bracket is provided with an adjusting worm and an adjusting worm wheel. The adjusting worm and adjusting worm wheel are mounted on a support base provided on the dampening main bracket. The adjusting worm and adjusting worm wheel are drivingly connected, and the limiting cam is provided on the adjusting worm wheel. The limiting cam adopts an eccentric wheel that is eccentric to the adjusting worm wheel.

[0010] Alternatively, the dampening roller axis centerline position adjustment mechanism may be provided on the dampening clutch movable bracket. For example, the dampening roller axis centerline position adjustment mechanism may include a self-aligning worm and a self-aligning worm wheel, wherein the self-aligning worm and the self-aligning worm wheel are drivingly connected, the self-aligning worm wheel is provided with a support sleeve, and the support sleeve is provided with an eccentric support hole. The axis of the dampening roller and the axis of the eccentric support hole are coaxially arranged, and the central axis of the dampening roller is connected to the eccentric support hole.

[0011] In addition, the optimization is further carried out. The water source roller is connected to the first gear, and the axis of the water source roller is coaxially arranged with the axis of the first gear. The metering roller is connected to the second gear, and the axis of the metering roller is coaxially arranged with the axis of the second gear. The water transmission clutch movable frame includes a water transmission clutch movable bracket and a pressure regulating swing arm. The pressure regulating swing arm is arranged on the water transmission clutch movable bracket. The water transmission clutch movable bracket is also provided with a transition transmission gear set. The metering roller is connected and installed on the water transmission clutch movable bracket through the pressure regulating swing arm. The metering roller is connected to the pressure regulating swing arm. The transition transmission gear set includes an output transition gear. The swing axis of the pressure regulating swing arm is coaxially arranged with the axis of the output transition gear. The first gear is connected to the transition transmission gear set, and the output transition gear is connected to the second gear meshing transmission.

[0012] As an additional optimization, a pressure adjustment mechanism is provided between the metering roller and the water roller. For example, the pressure adjustment mechanism includes a rotating pressure-adjusting cam support block, the rotation axis of which is coaxial with the axis of the metering roller, the rotating pressure-adjusting cam support block having a pressure-adjusting support surface, and the water-dispensing clutch movable bracket having a support mating portion, which is arranged correspondingly to the pressure-adjusting support surface. The water-dispensing clutch movable frame also includes a mounting seat for the metering roller to be disassembled and connected. A pressure-adjusting worm gear is mounted on the mounting seat, the rotation adjustment axis of the pressure-adjusting worm gear being coaxial with the axis of the metering roller. The rotating pressure-adjusting cam support block is connected to the pressure-adjusting worm gear, which is connected to a pressure-adjusting worm gear transmission, and the pressure-adjusting worm gear is arranged on the water-dispensing clutch movable frame. The pressure-adjusting support surface adopts a pressure-adjusting curved surface. The mounting seat is arranged on the upper side, and the pressure-adjusting worm gear is arranged on the pressure-adjusting swing arm.

[0013] For example, the transition transmission gear set also includes an input transition gear; the first gear, the input transition gear, the output transition gear, and the second gear are meshed and connected in sequence; a swing arm rotation adjustment device is provided between the water transmission clutch movable bracket and the pressure regulating swing arm, and the swing arm rotation adjustment device is transmission-connected to the pressure regulating swing arm; the swing arm rotation adjustment device is used to adjust the center distance between the metering roller and the water source roller; the retraction force applying part is arranged on the water transmission clutch movable bracket or on the pressure regulating swing arm, and the water transmission clutch movable bracket adopts a water transmission clutch swing arm type bracket; the swing axis of the water transmission clutch swing arm type bracket is coaxially arranged with the axis of the water source roller, and the clutch movable drive device includes a clutch swing type movable drive component. For another example, the water source roller is connected to a driving shaft, a hollow shaft is provided on the outer sleeve of the driving shaft, and a first bearing is provided between the hollow shaft and the driving shaft, the driving shaft is connected to the water source roller, the driving shaft, the hollow shaft and the water source roller are coaxially arranged, and the driving shaft is connected to a power input wheel; the inner end of the driving shaft is connected to the water source roller transmission, and the outer end of the driving shaft is connected to the power input wheel transmission; the hollow shaft is connected to the clutch swinging movable driving component, and the hollow shaft is connected to the water transmission clutch movable bracket; the inner end of the hollow shaft is connected to the water transmission clutch movable bracket, and the outer end of the hollow shaft is connected to the clutch swinging movable driving component; the hollow shaft is arranged on the dampening plate main bracket, and a second bearing is provided between the hollow shaft and the dampening plate main bracket; the water source roller includes a water source roller, one end of the water source roller is fixedly connected to the first shaft, the first shaft is installed on the driving shaft, the first gear is installed on the driving shaft, the other end of the water source roller is connected to the second shaft, and the second shaft is connected to the water source roller The cam is connected to the guide rail of the present invention and is connected to the guide rail of the present invention on the cam, and the guide rail is connected to the guide rail of the present invention on the cam.

[0014] The beneficial effect of the present invention is that the clutch moving drive device is only required on the dampening plate total bracket to drive the water transmission clutch movable bracket to move forward and backward, which can not only drive the metering roller to move forward and backward, but also the forward movement of the water transmission clutch movable bracket can drive the water clutch movable bracket and the water roller to move forward together, and the retraction of the water transmission clutch movable bracket can drive the water clutch movable bracket and the water roller to retract together through the cooperation of the connecting rod. Only the clutch moving drive device is required to cooperate and drive their clutch action, and the water clutch action of the water clutch movable bracket and its water roller does not require additional configuration of a driving structure, and does not require additional independent configuration of a power source, which reduces the number of power sources, simplifies the power structure, does not require additional redundant control programs, reduces costs, and the load of the dampening plate total bracket is also relatively reduced.

[0015] After further optimization of the structure, when the pressure between the water source roller and the metering roller needs to be adjusted, or when the water source roller and the metering roller are worn during the water transmission process and then adjusted, the pressure regulating swing arm can be rotated to adjust the pressure regulating swing arm around its swing center and the center of the output transition gear to the appropriate position to ensure that the pressure between the water source roller and the metering roller is appropriate. After the adjustment, the first gear, the transition transmission gear set and the second gear can always maintain a normal meshing transmission relationship, and the center distance of the gear meshing will not change, avoiding the change in the gear meshing state due to the adjustment that affects the normal meshing transmission, ensuring the stability of the transmission and water transmission, reducing or even avoiding the occurrence of vibration and shaking that cause water bars on printed products. Changes in the diameters of the water source roller and the metering roller will not affect the printing transmission and printing effect. Even if wear occurs, they can continue to be used through adjustment, making them durable, reducing the cost of use, and reducing the frequency of replacement. Moreover, the water source roller, metering roller, transition transmission gear set, pressure regulating swing arm, etc. can move forward and backward with the water transmission clutch movable bracket, and can be used for clutch coordination action; when retreating, the pressure release is used to separate backward from other water transmission structures (such as the water roller), which is convenient for position adjustment of the pressure regulating swing arm and the metering roller; when moving forward, the pressure is used to move forward and lean against other water transmission structures (such as the water roller) to facilitate water transmission; even other water transmission structures (such as the water roller, etc.) can be driven to engage and disengage with the plate roller through the water transmission clutch movable bracket, and cooperate to separate, disengage and engage, and close and engage, thereby simplifying the power structure and achieving linkage coordination through the clutch movement of the water transmission clutch movable bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following describes the relevant details and working principles of the implementation methods and embodiments of the present invention in conjunction with the accompanying drawings.

[0017] Figure 1 It is a structural diagram of the present utility model.

[0018] Figure 2 This is a schematic diagram of the hidden structure of the present invention.

[0019] Figure 3 for Figure 1 Partial cross-sectional view of FF.

[0020] Figure 4 for Figure 3 Partial cross-sectional view of EE.

[0021] In the picture:

[0022] 1. Water source roller; 10. First gear; 11. Drive shaft; 12. First bearing; 13. Power input wheel; 14. Water source roller; 15. First shaft; 16. Second shaft; 17. Third bearing;

[0023] 2. Metering roller; 20. Second gear; 21. Support mandrel; 22. Metering roller; 23. Fifth bearing;

[0024] 3. Water transmission clutch movable bracket; 30. Water transmission clutch swing arm bracket; 31. Hollow shaft; 32. Second bearing; 33. Swing shaft; 34. Fourth bearing; 300. Water transmission clutch movable bracket;

[0025] 4. Transition transmission gear set; 40. Output transition gear; 41. Input transition gear; 42. Rotation support shaft;

[0026] 5. Pressure-regulating swing arm; 50. Mounting seat; 51. Pressure-regulating mechanism; 52. Rotating pressure-regulating cam support block; 521. Pressure-regulating support surface; 53. Pressure-regulating worm gear; 54. Pressure-regulating worm;

[0027] 6. Swing arm rotation adjustment device; 60. Screw seat; 61. Adjusting screw; 62. Rotating shaft; 63. Spacer;

[0028] 7. Clutch movable drive device; 70. Clutch swing movable drive component;

[0029] 71. Connecting rod; 72. Retraction force-bearing portion; 73. Limiting mechanism; 731. Limiting cam; 732. Limiting hole; 74. Adjusting worm; 75. Adjusting worm wheel; 76. Support seat; 77. Retraction force-applying portion; 78. Articulated shaft;

[0030] 8. Main support for dampening plate; 80. Plate support clutch guide rail; 81. Lifting and lowering adjustment transmission device; 82. Support main wall panel;

[0031] 9. Water roller; 90. Water clutch movable bracket; 901. Supporting part; 91. Water uniform roller; 92. Self-aligning worm; 93. Self-aligning worm wheel; 94. Support sleeve; 95. Eccentric support hole;

[0032] 100. Plate roller. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the implementation of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] Referring to the accompanying drawings, the printing dampening device in the embodiment of this embodiment includes a dampening main bracket 8, a water source roller 1, a metering roller 2 and a water roller 9. The dampening main bracket 8 is arranged on a plate-supporting clutch guide rail 80. The dampening main bracket 8 is provided with a plate roller station in the plate-supporting forward direction. The dampening main bracket 8 moves along the plate-supporting clutch guide rail 80 and can separate from and approach the plate roller 100 at the plate roller station. It can adapt to plate rollers 100 of different sizes and diameters through overall movement.

[0035] The printing dampening device also includes a water transmission clutch movable frame 300 and a water clutch movable bracket 90. The water transmission clutch movable frame 300 and the water clutch movable bracket 90 are arranged on the dampening main bracket 8. The water source roller 1 and the metering roller 2 are installed on the water transmission clutch movable frame 300. The water source roller 1 and the metering roller 2 also move together with the water transmission clutch movable frame 300. The water roller 9 is installed on the water clutch movable bracket 90, and the water roller 9 moves together with the water clutch movable bracket 90; and the water transmission clutch movable frame 300 and the water clutch movable bracket 90 can move accordingly on the dampening main bracket 8 to perform corresponding water transmission clutch and water clutch, and can also move together with the dampening main bracket 8 along the plate clutch guide rail to adapt to plate rollers 100 of different sizes and diameters.

[0036] The dampening roller 9 is positioned in front of the metering roller 2. It is located on the movement path where the metering roller 2 moves forward and presses against the water transfer clutch movable frame 300. This allows the metering roller 2 to move forward and press against the dampening roller 9. For example, the dampening roller 9 is located on the forward swinging movement path where the water transfer clutch movable frame 300 (e.g., the water transfer clutch movable bracket 3) swings forward and presses against the dampening roller 9. The forward movement of the water transfer clutch movable bracket 300 also presses against the dampening roller 9, causing the metering roller 2 to move forward and press against the dampening roller 9, which in turn drives the dampening roller 9 and the dampening roller 9 forward.

[0037] The water transmission clutch movable frame 300 is connected to the clutch movement driving device 7 in a transmission manner. The clutch movement driving device 7 (such as a motor or a cylinder) is configured to drive the water transmission clutch movable frame 300 to perform clutch movement.

[0038] The water transmission clutch movable frame 300 and the water landing clutch movable bracket 90 are further provided with a connecting rod 71, and the water transmission clutch movable frame 300 will drive the water landing clutch movable bracket 90 to retreat by the cooperation of the connecting rod 71; wherein, the connecting rod 71 and the water landing clutch movable bracket 90 are hinged (connected by a hinge shaft 78), and a retreat force-bearing part 72 (such as a pin) is provided on the connecting rod 71, and a retreat force-applying part 77 (such as the front edge of the long hole 777, the long hole 777 can be sleeved on the outside of the pin of the retreat force-bearing part 72) is provided on the water transmission clutch movable frame 300. The retreat force-applying part 77 can be directly provided on the water transmission clutch movable bracket 3 or on the pressure regulating swing arm 5. The retreat force-applying part 77 is arranged on the front side of the retreat force-bearing part 72. When the water transmission clutch movable frame 300 (for example, the water transmission clutch movable bracket 3) retreats, its retreat force-applying part 77 will act on the retreat force-bearing part After the separation interval is completed, the retraction force applying portion 77 will contact the retraction force receiving portion 72, so that the water transmission clutch movable frame 300 will not immediately drive the water clutch movable frame 90 to retreat when it retreats. Instead, the water transmission clutch movable frame 300 will first retreat a distance and then retreat a distance adapted to the separation interval before driving the water clutch movable frame 90 to retreat. As a result, it can not only drive the water clutch movable frame 90 to retreat to separate and depress the water roller 9 and the plate roller 100, but also separate the water transmission clutch movable frame 300 from the water clutch movable frame 90 to separate and depress the metering roller and the water roller 9. Furthermore, the forward movement of the water transfer clutch movable frame 300 can also engage and press the metering roller of the water clutch movable bracket 90 forward, pressing the water applicator roller 9, and thus drive the water clutch movable bracket 90 and the applicator roller 9 forward. Therefore, the clutch movable drive device alone can coordinate and drive the clutching and engaging of these components. The clutching and engaging of the water applicator roller 9 and the water applicator bracket 90 require no additional drive structure or independent power source.

[0039] In the printing dampening device, the dampening main bracket 8 only needs the clutch moving drive device 7 to drive the water transfer clutch movable frame 300 to move forward and backward, which can not only drive the metering roller 2 to move forward and backward, but also the forward movement of the water transfer clutch movable frame 300 can drive the water clutch movable frame 90 and the water roller 9 to move forward together, and the backward movement of the water transfer clutch movable frame 300 can drive the water clutch movable frame 90 and the water roller 9 to retreat together through the connecting rod 71. Only the clutch moving drive device 7 is required to cooperate and drive their clutch action. The water clutch action of the water clutch movable frame 90 and its water roller 9 does not require additional configuration of a driving structure and does not require additional independent configuration of a power source, which reduces the number of power sources, simplifies the power structure, does not require additional redundant control programs, reduces costs, and the load of the dampening main bracket 8 is also relatively reduced.

[0040] The following optimization or further explanation may be performed based on the above embodiments.

[0041] The dampening clutch movable bracket 90 is a reciprocating movable bracket without an independent power source. It is also equipped with a water-distributing roller 91, which is used to coordinate with the dampening roller 9 to distribute water. The water-distributing roller 91 is connected to a water-distributing drive device, and is driven by the water-distributing drive device to rotate and axially distribute water. The dampening roller 9 is a passive rotating roller without an independent power source. This means that the dampening roller 9 rotates passively, without requiring an additional independent power source. It is driven by other rollers (such as the plate roller 100) during pressurization. The dampening roller 9 has no additional transmission structure, simplifying the transmission structure and preventing wear of the dampening roller 9 from affecting the transmission structure. This results in more stable water transmission and avoids problems with rack and bar systems.

[0042] The movable structure of the water-impregnating clutch movable bracket 90 can be linear or swinging. For example, as shown in the figure, the water-impregnating clutch movable bracket 90 utilizes a water-impregnating clutch swing arm bracket, with the swing axis coaxially arranged with the axis of the water-distributing roller 91. This results in a relatively compact structure and a relatively low swing load, facilitating transmission connection with the water-distributing roller 91, which is positioned below the water-impregnating roller 9. The water-transmitting clutch movable bracket 300 and the water-impregnating clutch movable bracket 90 are each in a forward position, with the distance between the retracting force-applying portion 77 and the retracting force-receiving portion 72 representing the separation distance. The clutch movable drive device 7 can be connected to the dampening main bracket 8, enabling it to move along with the dampening main bracket 8, making transmission connection more convenient.

[0043] Furthermore, a limiting mechanism 73 is provided between the dampening main support 8 and the connecting rod 71 to limit the forward and backward movement of the connecting rod 71. This limiting mechanism 73 limits the forward and backward movement of the connecting rod 71, ensuring that its forward and backward movement is restricted and that the connecting rod 71 is in position. The forward and backward movement of the connecting rod 71 limited by the limiting mechanism 73 serves a dual purpose. Not only does the forward movement of the connecting rod 71 limit the forward movement of the watering clutch movable support 90 and the forward movement of the watering roller 9, thereby limiting the pressure exerted by the forward movement of the watering roller 9 and the plate roller 100, but the retraction of the connecting rod 71 also allows the retraction of the watering clutch movable support 90 and the watering roller 9 to a position free of pressure, ensuring separation from the metering roller 2.

[0044] There are many ways to configure the limiting mechanism 73. For example, the following structure is adopted in this embodiment, which is convenient for adjustment and can cooperate to realize the adjustment of the size of the pressing pressure, wherein the limiting mechanism 73 includes a limiting cam 731 and a limiting hole 732. The limiting hole 732 and the limiting cam 731 are respectively arranged on the connecting rod 71 and the dampening plate bracket 8. The limiting cam 731 is located in the limiting hole 732. The limiting hole 732 has a limited activity space for the limiting cam 731 to move back and forth relatively. The limiting cam 731 can move back and forth relatively in the limiting hole 732 and is constrained by the limited activity space of the limiting hole 732 to move forward and backward, thereby limiting the forward and backward movement of the connecting rod 71. Moreover, by rotating the limiting cam 731, the starting and ending positions of the forward and backward movement of the connecting rod 71 can be adjusted, and the pressure of the dampening roller 9 moving forward and pressing the plate roller 100 is increased. The cooperation will also be adjusted; for example, the limiting hole 732 is set on the connecting rod 71, and the limiting cam 731 is set on the main dampening bracket 8. The main dampening bracket 8 is provided with an adjusting worm 74 and an adjusting worm wheel 75. The adjusting worm 74 and the adjusting worm wheel 75 are installed on the support seat 76. The support seat 76 is set on the main dampening bracket 8, and the support seat 76 cooperates to support the adjusting screw and the adjusting worm wheel 75 for rotation. The adjusting worm 74 is connected to the adjusting worm wheel 75 by transmission, and the adjusting worm 74 drives the adjusting worm wheel 75 to rotate. The limiting cam 731 is set on the adjusting worm wheel 75, and the limiting cam 731 changes its relative position in the limiting hole 732 as the adjusting worm wheel 75 rotates; for another example, the limiting cam 731 adopts an eccentric wheel, and the eccentric wheel and the adjusting worm wheel 75 are eccentrically set.

[0045] In addition, a watering roller axis centerline position adjustment mechanism is provided on the watering clutch movable bracket 90, and the watering roller axis centerline position adjustment mechanism is used to realize the axis position adjustment of the watering roller 9 on the watering clutch movable bracket 90. The technology of the watering roller axis centerline position adjustment mechanism is relatively mature; for example, the watering roller axis centerline position adjustment mechanism includes a self-adjusting worm 92 and a self-adjusting worm wheel 93, and the self-adjusting worm 92 is connected to the self-adjusting worm wheel 93 in transmission, and the self-adjusting worm wheel 93 is provided with a support sleeve 94, and the support sleeve 94 is provided with an eccentric support hole 95. The axis of the watering roller 9 is coaxially arranged with the axis of the eccentric support hole 95, wherein the self-adjusting worm 92 drives the self-adjusting worm wheel 93 to rotate, and the eccentric support hole 95 of the support sleeve 94 on it rotates and adjusts the relative position, thereby adjusting the axis centerline position of the watering roller 9; wherein the center axis of the watering roller 9 is connected to the eccentric support hole 95. This structure is based on the clutch movement of the water impingement clutch movable bracket 90 driven by the water transmission clutch movable bracket 300 and the connecting rod 71 to perform clutch movement, and then adjust the position of the axis of the water impingement roller 9, so that the combined pressure between the water impingement roller 9 and the water uniforming roller 91 can be adjusted. In addition, the water impingement roller 9 and the water uniforming roller 91 are located on the clutch movement bracket 90, and can independently achieve pressure adjustment. In particular, when the water impingement roller 9 is a passive rotating roller without an independent power source, it is not affected by the rotation adjustment of the water impingement roller 9, and the structure is relatively simple and the adjustment is more convenient.

[0046] Further optimization, a contact pressure regulating mechanism 51 is provided between the metering roller 2 and the water roller 9. The contact pressure regulating mechanism 51 cooperates to adjust the pressure between the metering roller 2 and the water roller 9 so as to adjust the water transmission pressure. Usually, the metering roller 2 and the water uniforming roller 91 are hard rollers, and the water source roller 1 and the water roller 9 are soft rollers. The contact pressure regulation can be achieved by adjusting the center distance between the water roller 9 and the metering roller 2; for example, the contact pressure regulating mechanism 51 includes a rotating pressure regulating cam support block 52, and the rotating axis of the rotating pressure regulating cam support block 52 is coaxially arranged with the axis of the metering roller 2, that is, the rotating pressure regulating cam support block 52 can be rotated around the axis of the metering roller 2 to adjust the position, and the rotating pressure regulating cam support block 52 has a pressure regulating support surface 521, and the pressure regulating support surface 521 will adjust the relative position (such as the angle position) as the rotating pressure regulating cam support block 52 rotates. A water-impinging clutch movable bracket 90 (such as a water-impinging swing arm, etc.) is provided, and the water-impinging clutch movable bracket 90 is provided for the installation and connection of the water-impinging roller 9. The water-impinging clutch movable bracket 90 has a supporting fitting portion 901, and the supporting fitting portion 901 is arranged corresponding to the pressure-adjusting supporting surface 521. The rotating pressure-adjusting cam supporting block 52 can be supported on the supporting fitting portion 901 to limit the position. When the pressure-adjusting supporting surface 521 is rotated to adjust the relative position, the pressure adjustment can be achieved by cooperating to adjust the center distance between the water-impinging roller 9 and the metering roller 2. The structure is relatively simple and uncomplicated, easy to assemble, and convenient to adjust.

[0047] For example, the water transmission clutch movable frame 300 includes a water transmission clutch movable frame 3 and a pressure regulating swing arm 5, and the pressure regulating swing arm 5 is arranged on the water transmission clutch movable frame 3. The water transmission clutch movable frame 300 (such as the pressure regulating swing arm 5 installed thereon) can also be provided with a mounting seat 50 for the metering roller 2 to be detachably connected and connected, and a pressure regulating worm gear 53 is sleeved on the mounting seat 50. The pressure regulating worm gear 53 can be adjusted by relative rotation on the mounting seat 50. The rotation adjustment axis of the pressure regulating worm gear 53 is coaxially arranged with the axis of the metering roller 2. The rotating pressure regulating cam support block 52 is connected to the pressure regulating worm gear 53, that is, the rotating pressure regulating cam support block 52 uses the rotation adjustment axis of the pressure regulating worm gear 53 as its rotation axis. The pressure regulating worm gear 53 is connected to the pressure regulating worm gear 54 in a transmission manner, and the pressure regulating worm gear 54 is driven by the pressure regulating worm gear 54. The pressure-regulating worm gear 53 is driven to rotate, thereby driving the rotating pressure-regulating cam support block 52 to rotate, resulting in stable operation and a self-locking function after adjustment to prevent displacement. The pressure-regulating worm gear 54 is disposed on the water transmission clutch movable frame 300 (e.g., the pressure-regulating swing arm 5 mounted thereon). For example, the pressure-regulating worm gear 54 is disposed on the pressure-regulating swing arm 5, which is mounted on the water transmission clutch movable frame 3. The mounting seat 50 can also be mounted on the pressure-regulating swing arm 5. That is, the pressure-regulating worm gear 54 can rotate on the pressure-regulating swing arm 5, and the pressure-regulating worm gear 53 on the mounting seat 50 will shift along with the pressure-regulating swing arm 5. The pressure-regulating support surface 521 can be a pressure-regulating curved surface, such as a non-circular curved surface, or an eccentric circular curved surface that is eccentric with the pressure-regulating worm gear 53.

[0048] It can also be further optimized to have the function of water transmission and pressure regulation and ensure the stability of transmission and water transmission during the pressure regulation process.

[0049] The water source roller 1 is transmission-connected to the first gear 10, and the axis of the water source roller 1 is coaxially arranged with the axis of the first gear 10. The water source roller 1 and the first gear 10 will rotate together. The water source roller 1 is used to bring out the dampening solution in the water tray and then transmit the output through the metering roller 2; the metering roller 2 is transmission-connected to the second gear 20, and the axis of the metering roller 2 is coaxially arranged with the axis of the second gear 20. The metering roller 2 and the second gear 20 will rotate together.

[0050] The water transmission clutch movable bracket 3 is also provided with a transition transmission gear set 4 and a pressure regulating swing arm 5. The water source roller 1 can rotate on the water transmission clutch movable bracket 3 to transmit water, and the transition transmission gear set 4 can transmit power on the water transmission clutch movable bracket 3. The first gear 10 and the second gear 20 can be connected and coordinated to transmit power by the transition transmission gear set 4. The first gear 10 and the second gear 20 can be connected and coordinated to transmit power by the transition transmission gear set 4. The pressure regulating swing arm 5 can swing on the water transmission clutch movable bracket 3 to adjust the relative position. The metering roller 2 is connected and installed on the water transmission clutch movable bracket 3 through the pressure regulating swing arm 5. The metering roller 2 is connected to the pressure regulating swing arm 5. The metering roller 2 swings and adjusts its position with the pressure regulating swing arm 5 to adjust the pressure, and the water source roller 1, the transition transmission gear set 4, the pressure regulating swing arm 5, and the metering roller 2 can move together with the water transmission clutch movable bracket 3 to perform clutch operation. The water transmission clutch movable bracket 3 moves forward and backward, which can be used for water transmission clutch coordination action.

[0051] Among them, the transition transmission gear set 4 includes an output transition gear 40, the swing axis of the pressure regulating swing arm 5 is coaxially arranged with the axis of the output transition gear 40, that is, the swing center of the pressure regulating swing arm 5, that is, the swing axis, is coaxially arranged with the rotation center axis of the output transition gear 40, and the first gear 10 is transmission-connected with the transition transmission gear set 4, and the output transition gear 40 is meshed with the second gear 20 for transmission connection. When the first gear 10 and the water source roller 1 rotate together, the first gear 10 transmits power to the second gear 20 through the transition transmission gear set 4 to rotate, and the rotation of the second gear 20 drives the metering roller 2 to rotate together; wherein During the swing adjustment process of the pressure regulating swing arm 5, the second gear 20 and the metering roller 2 swing and adjust together with the pressure regulating swing arm 5. The second gear 20 can rotate and revolve around and engage the output transition gear 40. The meshing transmission relationship between the second gear 20 and the output transition gear 40 will not change, and will not affect the normal meshing transmission, thereby ensuring the transmission stability of the second gear 20 and the output transition gear 40. Moreover, during the swing adjustment process of the pressure regulating swing arm 5, the transmission relationship between the first gear 10 and the transition transmission gear group 4 and the transition transmission gear group 4 will not change, and will not affect the normal meshing transmission.

[0052] When the pressure between the water source roller 1 and the metering roller 2 needs to be adjusted, or when the water source roller 1 and the metering roller 2 are worn during the water transmission process and need to be adjusted again, the pressure regulating swing arm 5 can be rotated to adjust the pressure regulating swing arm 5 to a suitable position around its swing center and the center of the output transition gear 40, ensuring that the pressure between the water source roller and the metering roller 2 is suitable. After the adjustment, the first gear 10, the transition transmission gear set 4 and the second gear 20 can all maintain normal meshing transmission, and the center distance of the gears meshing with each other does not change, avoiding the change in the gear meshing state caused by the adjustment and affecting the normal meshing transmission, ensuring the transmission and water transmission stability, reducing or even avoiding vibration and shaking that cause water bar and gear bar problems in printed products. The water source roller 1 and the metering roller 2 are more durable and can continue to be used even if they are worn, thereby reducing the cost of use and the frequency of replacement. Moreover, the water source roller 1, metering roller 2, transition transmission gear set 4, pressure regulating swing arm 5, etc. can move forward and backward with the water transmission clutch movable bracket 3, and can be used for water transmission clutch coordination action; when retreating, the pressure is released to separate backward from other water transmission structures (such as the water roller 9), which is convenient for position adjustment of the pressure regulating swing arm 5 and the metering roller 2; when moving forward, the pressure is applied forward to lean against other water transmission structures (such as the water roller 9), which is convenient for water transmission; even the water transmission clutch movable bracket 3 can be used to drive other water transmission structures (such as the water roller 9, etc.) to engage and disengage with the plate roller 100, and cooperate to separate and disengage the pressure and close and engage the pressure, thereby simplifying the power structure and achieving linkage coordination through the clutch movement of the water transmission clutch movable bracket 3.

[0053] The following additional optimizations can also be performed.

[0054] For example, the transition transmission gear set 4 further includes an input transition gear 41, which inputs power into the transition transmission gear set 4, and the transition transmission gear set 4 outputs power via an output transition gear 40. Furthermore, the first gear 10, the input transition gear 41, the output transition gear 40, and the second gear 20 are sequentially meshed and connected to form a four-gear transmission structure. The four gears mesh with each other, resulting in a more compact structure and relatively efficient transmission, ensuring that the water source roller 1 and the metering roller 2 can smoothly complete the rolling and water transfer when the water source roller 1 and the metering roller 2 are pressed together.

[0055] Among them, a swing arm rotation adjustment device 6 is provided between the water transmission clutch movable bracket 3 and the pressure regulating swing arm 5. The swing arm rotation adjustment device 6 is transmission-connected to the pressure regulating swing arm 5, and the swing arm rotation adjustment device 6 cooperates to drive the pressure regulating swing arm 5 to swing and adjust the position on the water transmission clutch movable bracket 3; the swing arm rotation adjustment device 6 is used to adjust the center distance between the metering roller 2 and the water source roller 1, that is, the distance between the axes of the two rollers, and can adjust the pressure between the metering roller 2 and the water source roller 1 and drive them to separate and release pressure from each other. There are many ways to adjust the swing arm rotation mechanism 6. For example, it can be rotated by driving the support shaft of the pressure-regulating swing arm 5, or by pushing the pressure-regulating swing arm 5 forward and backward to rotate, or by pulling the pressure-regulating swing arm 5 to rotate. For example, as shown in the figure, the swing arm rotation mechanism 6 includes a screw seat 60, an adjusting screw 61, and a rotating shaft 62 with a threaded hole. The screw seat 60 is arranged on the water transmission clutch movable bracket 3 to support the adjusting screw 61 for rotation. The rotating shaft 62 is configured in an assembly hole on the pressure-regulating swing arm 5 so that the rotating shaft 62 can rotate relative to the assembly hole during adjustment. The adjusting screw 61 is transmission-connected to the threaded hole on the rotating shaft 62. When adjustment is required, the adjusting screw 61 can be rotated to engage the threaded hole on the rotating shaft 62 to drive the pressure-regulating swing arm 5 to swing forward or backward. In addition, an adjustment channel can be provided on the pressure-regulating swing arm 5 so that the adjusting screw 61 can pass through the adjustment channel and connect to the rotating shaft 62. The pressure-regulating swing arm 5 can be a curved arm (such as an L-shaped curved arm) to facilitate layout in a narrow space. In the figure, the adjusting screw 61 is provided with a spacer 63 and an elastic ring. The spacer 63 and the elastic ring (such as a compression spring or shrapnel) are arranged between the screw seat 60 and the rotating shaft 62. The elastic ring is arranged between the screw seat 60 and the spacer 63, which can eliminate the influence of the thread gap between the thread hole and the adjusting screw 61, making the adjustment of the adjusting screw 61 more stable and relatively more precise. It can also be further optimized. The output transition gear 40 is connected to the water transmission clutch movable bracket 3 via the rotating support shaft 42. The pressure regulating swing arm 5 is mounted on the rotating support shaft 42. The rotating support shaft 42 jointly supports the output transition gear 40 and the pressure regulating swing arm 5. The shared support shaft structure is relatively compact and easier to ensure coaxiality. A gear bearing can also be provided between the output transition gear 40 and the rotating support shaft 42 to ensure that the output transition gear 40 rotates efficiently and stably during the transmission process.

[0056] The water transmission clutch movable frame 300 can be engaged and disengaged in a variety of ways, most commonly linear reciprocating or swinging reciprocating. A clutch movement drive device 7 (e.g., comprising a motor or cylinder) can be configured to drive the water transmission clutch movable frame 300 for engagement and disengagement. For example, the water transmission clutch movable frame 3 of the water transmission clutch movable frame 300 is connected to the clutch movement drive device 7. The water transmission clutch movable frame 3 and the clutch movement drive device 7 can be connected to a dampening plate main frame 8, which is disposed on a plate contact clutch guide rail 80. The water transmission clutch movable frame 3, along with its water source roller 1, transition transmission gear set 4, pressure regulating swing arm 5, metering roller 2, and clutch movement drive device 7, can all move along the plate contact clutch guide rail 80 with the dampening plate main frame 8, enabling separation from and approach to the printing plate roller 100 of the printing device. This integrated movement allows for adaption to plate rollers 100 of varying diameters.

[0057] For example, the figure illustrates a clutch movement method involving swinging and reciprocating motion. The water transmission clutch movable bracket 3 can be a water transmission clutch swing arm bracket 30, i.e., the water transmission clutch swing arm bracket 30 performs clutch movement by swinging and reciprocating motion, swinging forward to close and press, and swinging backward to separate and release. When the water transmission clutch swing arm bracket 30 is used, it can be optimized by setting the swing axis of the water transmission clutch swing arm bracket 30 coaxially with the axis of the water source roller 1. This means that the water transmission clutch swing arm bracket 30, i.e., the water transmission clutch movable bracket 3 and the water source roller 1, will operate around the same axis. This results in a relatively compact structure and relatively stable operation, facilitating subsequent power transmission and relatively low swinging and clutching loads. The clutch movement drive device 7 includes a clutch swinging movement drive component 70, which drives the water transmission clutch swing arm bracket 30 to perform swinging and clutching motion.

[0058] For example, the water source roller 1 is transmission-connected with a driving shaft 11, and a hollow shaft 31 is provided on the outer sleeve of the driving shaft 11. A first bearing 12 is further provided between the hollow shaft 31 and the driving shaft 11. The driving shaft 11 is transmission-connected with the water source roller 1, and the driving shaft 11, the hollow shaft 31 and the water source roller 1 are coaxially arranged to form a coaxial compact structure, and the driving shaft 11 and the hollow shaft 31 can support each other and run relatively stably. The driving shaft 11 is transmission-connected with a power input wheel 13, and the power input wheel 13 cooperates to input power to drive the driving shaft 11 to rotate, and the driving shaft 11 will drive the water source roller 1 to rotate to cooperate with water transmission; it can be optimized, and the inner end of the driving shaft 11 is transmission-connected with the water source roller 1, and the driving shaft 11 The outer end of the hollow shaft 31 is connected to the power input wheel 13 by transmission, and the inside and outside structural layout is more reasonable, avoiding excessive congestion in the inner space; wherein, the hollow rotating shaft 31 is connected to the clutch swinging movable driving component 70 by transmission, and the hollow rotating shaft 31 is connected to the water transmission clutch movable bracket 3 by transmission, and the clutch swinging movable driving component 70 can cooperate to drive the hollow rotating shaft 31 to rotate back and forth, that is, forward rotation and reverse rotation, thereby driving the water transmission clutch movable bracket 3 (such as the water transmission clutch swing arm bracket 30) to swing forward and reverse; it can be optimized, the inner end of the hollow rotating shaft 31 is connected to the water transmission clutch movable bracket 3 by transmission, and the outer end of the hollow rotating shaft 31 is connected to the clutch swinging movable driving component 70 by transmission, and the inside and outside structural layout is more reasonable, avoiding excessive congestion in the inner space. The hollow rotating shaft 31 is arranged on the dampening plate main bracket 8, and a second bearing 32 is provided between the hollow rotating shaft 31 and the dampening plate main bracket 8. The hollow rotating shaft 31 is supported by the dampening plate main bracket 8 to rotate. The driving rotating shaft 11 in the hollow rotating shaft 31 and the water source roller 1 connected to the driving rotating shaft 11 and the water transmission clutch movable bracket 3 connected to the hollow rotating shaft 31 and the transition transmission gear group 4, pressure regulating swing arm 5, metering roller 2, etc. on the water transmission clutch movable bracket 3 can all be supported by the dampening plate main bracket 8. The clutch moving drive device 7 is arranged on the dampening plate main bracket 8. They can move as a whole with the dampening plate main bracket 8. The dampening plate main bracket 8 is configured on the plate clutch guide rail 80. The dampening plate main bracket 8 can move along the plate clutch guide rail 80, driving them to move as a whole, and can be separated from and approached by the plate roller 100 of the printing equipment, and can adapt to plate rollers 100 of different sizes and diameters through overall movement.

[0059] For example, the water source roller 1 includes a water source roller 14, one end of the water source roller 14 is fixedly connected to the first shaft 15, and the first shaft 15 is installed and connected to the driving shaft 11, so that the water source roller 1 can be disassembled and replaced on the driving shaft 11, and the driving shaft 11 will drive the water source roller 14 to rotate through the first shaft 15, so that the water source roller 1 rotates and runs to transmit water, and the first gear 10 can be installed on the driving shaft 11, so that the first gear 10 is still in a transmission connection relationship, and there is no need for frequent disassembly and assembly, and the transmission is stable; the other end of the water source roller 14 is connected to the second shaft 16, and a third bearing 17 is provided between the second shaft 16 and the water source roller 14, and the second shaft 16 can support the water source roller 14 to rotate, and the second shaft 16 is installed and connected to the swinging shaft 33, so that the water source roller 1 can be disassembled and replaced on the swinging shaft 33, and the second shaft 16 is supported by the swinging shaft 33; wherein, the swinging shaft 33 and the hollow shaft 31 is coaxially arranged, and the swing shaft 33 is arranged on the dampening plate main bracket 8 and can move together with the dampening plate main bracket 8. A fourth bearing 34 is also provided between the swing shaft 33 and the dampening plate main bracket 8. The fourth bearing 34 makes the swing shaft 33 more stable and smooth during the swing operation. The swing shaft 33 is also connected to the clutch swing type movable driving component 70. The swing shaft 33 is also connected to the water transmission clutch movable bracket 3. The hollow shaft 31 is also connected to the water transmission clutch movable bracket 3. That is, the swing shaft 33 and the hollow shaft 31 are driven back and forth by the clutch swing type movable driving component 70, and the swing shaft 33 cooperates with the hollow shaft 31 to drive the water transmission clutch movable bracket 3 to move in a clutch manner. In the figure, the water transmission clutch movable bracket 3 includes left and right clutch movable swing arms, which have a relatively stable structure and are driven to move in a clutch manner by the left and right hollow shafts 31 and the swing shaft 33. Of course, the same structure can also be used to drive the clutch movement and the rotation of the water source roller 1 on the left and right sides, which is not shown in the figure. In the figure, the inner end of the swing shaft 33 is in driving connection with the water-transmitting clutch movable bracket 3, while the outer end of the swing shaft 33 is in driving connection with the clutch swing movable drive component 70. This creates a more rational internal and external structural layout, avoiding excessive congestion on the inner side. Furthermore, the pressure-regulating swing arm 5 is provided with a mounting seat 50 for the metering roller 2 to be removably connected and attached, facilitating its removal and replacement. The metering roller 2 is mounted on a mounting seat 50 at each end, meaning that the pressure-regulating swing arm 5 at each end of the metering roller 2 has a corresponding mounting seat 50. For example, the metering roller 2 includes a supporting core shaft 21 and a metering roller 22. The metering roller 22 is sleeved on the supporting core shaft 21. A fifth bearing 23 is provided between the metering roller 22 and the supporting core shaft 21. The supporting core shaft 21 cooperates with the supporting core shaft 21 to support the metering roller 22 for rotation. The second gear 20 can be connected to the end of the metering roller 22. The two ends of the supporting core shaft 21 are respectively arranged on the pressure regulating swing arm 5. For example, the supporting core shaft 21 is connected and assembled on the mounting seat 50 for disassembly and assembly. In the figure, the two ends of the supporting core shaft 21 of the metering roller 2 are connected to the mounting seat 50 of the pressure regulating swing arm 5.The dampening plate main bracket 8 is connected to the lifting and adjusting transmission device 81, and the plate clutch guide rail 80 is set on the supporting main wall panel 82. The dampening plate main bracket 8 is driven to rise and fall by the lifting and adjusting transmission device 81. The lifting and adjusting transmission device 81 can be driven by a worm gear or a screw nut and other structures.

Claims

1. A printing dampening device, comprising a dampening main support (8), a water source roller (1), a metering roller (2) and a water roller (9), The dampening plate main support (8) is arranged on the plate clutch guide rail (80), and the dampening plate main support (8) is provided with a plate roller station in the plate forward direction, which is characterized in that: It also includes a water transmission clutch movable frame (300) and a water impact clutch movable bracket (90), the water transmission clutch movable frame (300) and the water impact clutch movable bracket (90) are arranged on the dampening main bracket (8), The water source roller (1) and the metering roller (2) are mounted on the water transmission clutch movable frame (300). The water roller (9) is mounted on the water clutch movable bracket (90), and the water roller (9) is arranged on the front side of the metering roller (2). The water roller (9) is located on a moving path of the metering roller (2) as it moves forward and presses along with the water transmission clutch movable frame (300); The water transmission clutch movable frame (300) is connected to the clutch movable driving device (7) in a transmission manner. A connecting rod (71) is provided between the water transmission clutch movable frame (300) and the water landing clutch movable bracket (90). The connecting rod (71) is hinged to the water clutch movable bracket (90). The connecting rod (71) is provided with a retracting force-bearing portion (72). A retracting force-applying portion (77) is provided on the water transmission clutch movable frame (300). The retracting force-applying portion (77) is arranged on the front side of the retracting force-receiving portion (72), and a separation distance is left between the retracting force-applying portion (77) and the retracting force-receiving portion (72).

2. The printing dampening device according to claim 1, wherein: The water-impinging clutch movable bracket (90) is a reciprocating movable bracket without an independent power source. The water-impinging clutch movable bracket (90) is further provided with a water-distributing roller (91) for cooperating with the water-impinging roller (9) to distribute water uniformly. The water roller (9) is a passive rotating roller without an independent power source. The water clutch movable bracket (90) adopts a water clutch swing arm bracket. The swing axis of the water-impinging clutch swing arm bracket is coaxially arranged with the axis of the water-distributing roller (91), the water-distributing roller (91) is arranged on the lower side of the water-impinging roller (9), and the water-distributing roller (91) is transmission-connected to the water-distributing driving device; The water transmission clutch movable frame (300) and the water landing clutch movable bracket (90) are respectively in a forward position state, and the distance between the retracting force applying portion (77) and the retracting force receiving portion (72) is a separation distance; The clutch moving drive device (7) is connected to the dampening plate main support (8).

3. The printing dampening device according to claim 1, wherein: A limiting mechanism (73) for limiting the forward and backward movement of the connecting rod (71) is provided between the dampening plate main bracket (8) and the connecting rod (71).

4. The printing dampening device according to claim 3, wherein: The limiting mechanism (73) includes a limiting cam (731) and a limiting hole (732). The limiting hole (732) and the limiting cam (731) are respectively arranged on the connecting rod (71) and the dampening plate main bracket (8). The limiting cam (731) is located in the limiting hole (732). The limiting hole (732) has a limited movable space for the limiting cam (731) to move forward and backward relative to each other; A limiting hole (732) is provided on the connecting rod (71), an adjusting worm (74) and an adjusting worm wheel (75) are provided on the dampening main bracket (8), the adjusting worm (74) and the adjusting worm wheel (75) are mounted on a support seat (76), the support seat (76) is provided on the dampening main bracket (8), the adjusting worm (74) and the adjusting worm wheel (75) are transmission-connected, and a limiting cam (731) is provided on the adjusting worm wheel (75); The limiting cam (731) adopts an eccentric wheel that is eccentrically arranged with the regulating worm wheel (75).

5. The printing dampening device according to claim 1, wherein: A water roller axis centerline position adjustment mechanism is provided on the water clutch movable bracket (90); The water roller axis centerline position adjustment mechanism includes a self-aligning worm (92) and a self-aligning worm wheel (93), the self-aligning worm (92) is connected to the self-aligning worm wheel (93) in a transmission manner, the self-aligning worm wheel (93) is provided with a support sleeve (94), the support sleeve (94) is provided with an eccentric support hole (95), the axis of the water roller (9) and the axis of the eccentric support hole (95) are coaxially arranged, and the central axis of the water roller (9) is connected to the eccentric support hole (95).

6. The printing dampening device according to claim 1, wherein: The water source roller (1) is transmission-connected to the first gear (10), and the axis of the water source roller (1) is coaxially arranged with the axis of the first gear (10). The metering roller (2) is transmission-connected to the second gear (20), and the axis of the metering roller (2) is coaxially arranged with the axis of the second gear (20). The water transmission clutch movable frame (300) comprises a water transmission clutch movable bracket (3) and a pressure regulating swing arm (5). The pressure regulating swing arm (5) is arranged on the water transmission clutch movable bracket (3). The water transmission clutch movable bracket (3) is also provided with a transition transmission gear set (4). The metering roller (2) is connected to the water transmission clutch movable bracket (3) through the pressure regulating swing arm (5), and the metering roller (2) is connected to the pressure regulating swing arm (5). The transition transmission gear set (4) includes an output transition gear (40), The swing axis of the pressure regulating swing arm (5) is coaxially arranged with the axis of the output transition gear (40). The first gear (10) is in transmission connection with the transition transmission gear set (4), and the output transition gear (40) is in meshing transmission connection with the second gear (20).

7. The printing dampening device according to claim 1 or 6, characterized in that: A pressure regulating mechanism (51) is provided between the metering roller (2) and the water roller (9).

8. The printing dampening device according to claim 7, wherein: The pressure regulating mechanism (51) includes a rotating pressure regulating cam support block (52), the rotation axis of the rotating pressure regulating cam support block (52) is coaxially arranged with the axis of the metering roller (2), the rotating pressure regulating cam support block (52) has a pressure regulating support surface (521), and the water clutch movable bracket (90) has a support matching portion (901), and the support matching portion (901) is correspondingly arranged with the pressure regulating support surface (521); The water transmission clutch movable frame (300) is further provided with a mounting seat (50) for disassembling and connecting the metering roller (2), and a pressure regulating worm gear (53) is sleeved on the mounting seat (50). The rotation adjustment axis of the pressure regulating worm wheel (53) is coaxially arranged with the axis of the metering roller (2); the rotating pressure regulating cam block (52) is connected to the pressure regulating worm wheel (53); the pressure regulating worm wheel (53) is transmission-connected to a pressure regulating worm (54); and the pressure regulating worm (54) is arranged on a water transmission clutch movable frame (300); The pressure regulating support surface (521) adopts a pressure regulating curved surface; The mounting seat (50) is arranged on the top, and the pressure regulating worm (54) is arranged on the pressure regulating swing arm (5).

9. The printing dampening device according to claim 6, wherein: The transition transmission gear set (4) further includes an input transition gear (41); the first gear (10), the input transition gear (41), the output transition gear (40), and the second gear (20) are sequentially meshed and connected; A swing arm rotation adjustment device (6) is provided between the water transmission clutch movable bracket (3) and the pressure regulating swing arm (5), and the swing arm rotation adjustment device (6) is transmission-connected to the pressure regulating swing arm (5); the swing arm rotation adjustment device (6) is used to adjust the center distance between the metering roller (2) and the water source roller (1); The retraction force applying portion (77) is arranged on the water transmission clutch movable bracket (3) or on the pressure regulating swing arm (5). The water transmission clutch movable bracket (3) adopts a water transmission clutch swing arm bracket (30); The swing axis of the water transmission clutch swing arm bracket (30) is coaxially arranged with the axis of the water source roller (1). The clutch movable drive device (7) includes a clutch swing movable drive component (70).

10. The printing dampening device according to claim 9, characterized in that: The water source roller (1) is connected to the driving shaft (11) in a transmission manner. A hollow shaft (31) is provided on the outer shell of the driving shaft (11). A first bearing (12) is provided between the hollow shaft (31) and the driving shaft (11). The driving shaft (11) is connected to the water source roller (1) in a transmission manner. The driving shaft (11), the hollow shaft (31) and the water source roller (1) are coaxially arranged. The driving shaft (11) is connected to the power input wheel (13); the inner end of the driving shaft (11) is connected to the water source roller (1), and the outer end of the driving shaft (11) is connected to the power input wheel (13); The hollow rotating shaft (31) is transmission-connected to the clutch swing-type movable driving component (70), and the hollow rotating shaft (31) is transmission-connected to the water transmission clutch movable bracket (3); the inner end of the hollow rotating shaft (31) is transmission-connected to the water transmission clutch movable bracket (3), and the outer end of the hollow rotating shaft (31) is transmission-connected to the clutch swing-type movable driving component (70); The hollow rotating shaft (31) is arranged on the dampening plate main bracket (8), and a second bearing (32) is provided between the hollow rotating shaft (31) and the dampening plate main bracket (8); The water source roller (1) includes a water source roller (14), One end of the water source roller (14) is fixedly connected to the first shaft (15), the first shaft (15) is mounted on the driving shaft (11), and the first gear (10) is mounted on the driving shaft (11). The other end of the water source roller (14) is connected to a second shaft (16), a third bearing (17) is provided between the second shaft (16) and the water source roller (14), and the second shaft (16) is mounted on the swing shaft (33). The swing shaft (33) is coaxially arranged with the hollow shaft (31). The swing shaft (33) is arranged on the dampening plate main bracket (8), and a fourth bearing (34) is provided between the swing shaft (33) and the dampening plate main bracket (8). The swing shaft (33) is connected to the clutch swing type moving drive component (70). The swing shaft (33) is connected to the water transmission clutch movable bracket (3). The inner end of the swing shaft (33) is in driving connection with the water transmission clutch movable bracket (3), and the outer end of the swing shaft (33) is in driving connection with the clutch swing movable driving component (70). A mounting seat (50) for disassembling and connecting the metering roller (2) is provided on the pressure regulating swing arm (5), and both ends of the metering roller (2) are respectively assembled on the mounting seat (50). The metering roller (2) includes a supporting core shaft (21) and a metering roller (22). The metering roller (22) is sleeved outside the supporting core shaft (21). A fifth bearing (23) is provided between the metering roller (22) and the supporting core shaft (21). The second gear (20) is connected to the end of the metering roller (22). The two ends of the supporting core shaft (21) are respectively arranged on the pressure regulating swing arm (5). The supporting core shaft (21) is connected and assembled on the mounting seat (50); The dampening main bracket (8) is connected to the lifting and lowering adjustment transmission device (81), and the plate clutch guide rail (80) is arranged on the supporting main wall plate (82).

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