A low-VOC damping system for offset printing machines

Abstract

This invention discloses a low-VOC damping system for offset printing machines, comprising a mounting base plate, a support plate, a first damping solution filter, and a second damping solution filter. A carrier plate is mounted on the support plate, and a transfer box is mounted on the carrier plate. The bottom wall of the transfer box has a first through hole and a second through hole. A conveyor box is mounted on the support plate, and its top surface has a first inlet hole and a second inlet hole. The inlet end of the first damping solution filter is connected to the first through hole, and its outlet end is connected to the first inlet hole. The inlet end of the second damping solution filter is connected to the second through hole, and its outlet end is connected to the second inlet hole. A first drive motor is mounted inside the carrier plate, and a first screw is mounted on the first drive motor. A slider is sleeved on the first screw, and a sealing plate is mounted on the slider. The side of the sealing plate is in contact with the inner wall of the conveyor box. This application has the effect of improving the filtration efficiency of the damping system.

Description

Technical Field

[0001] This invention relates to the field of offset printing plate damping, and in particular to a low-VOC damping system for offset printing machines. Background Technology

[0002] In existing technology, offset printing machines are usually equipped with a filtration system for recovering and filtering dampening solution. This system removes paper fibers, dust, and ink from the dampening solution, allowing it to be reused. However, as the filtration time increases, the filtration effect of the dampening filter weakens, requiring the machine to be stopped for cleaning or replacement. This process takes a considerable amount of time and reduces the filtration efficiency of the filtration system.

[0003] In response to the aforementioned technologies, there is an urgent need to design and develop a low-VOC damping system for offset printing machines that allows for the cleaning and replacement of damping filters without machine downtime, saving time and improving the filtration efficiency of damping filters. Summary of the Invention

[0004] To improve the filtration efficiency of damping filters, this application provides a low-VOC damping system for offset printing machines.

[0005] The low-VOC damping system for offset printing machines provided in this application adopts the following technical solution:

[0006] A low-VOC damping system for offset printing machines includes a mounting base plate, a support plate mounted on the mounting base plate, a first damping solution filter mounted above the mounting base plate, and a second damping solution filter mounted above the mounting base plate. A carrier plate is mounted on the support plate, and a circulation pump is mounted on the carrier plate. The inlet end of the circulation pump has an inlet pipe for extracting damping solution waste liquid, and the outlet end of the circulation pump has an outlet pipe. A transfer box is mounted on the carrier plate, and the outlet pipe is inserted into the transfer box and connected to the transfer box. A first through hole and a second through hole are formed on the bottom wall of the transfer box. A conveyor box is mounted on the support plate, and a first inlet hole and a second inlet hole are formed on the top surface of the conveyor box. An outlet hole is formed on the side of the conveyor box, and a discharge pipe is installed inside the outlet hole. A valve is installed on the discharge pipe passing through the support plate. The inlet end of the first dampening solution filter is connected to the first through hole, and the outlet end of the first dampening solution filter is connected to the first feed hole. The inlet end of the second dampening solution filter is connected to the second through hole, and the outlet end of the second damping solution filter is connected to the second feed hole. A sliding groove is provided on the bottom surface of the support plate, and the sliding groove is connected to the transfer box. A first drive motor is installed inside the support plate, and a first screw is installed on the output shaft of the first drive motor. The first screw is rotatably installed in the sliding groove. A slider is threaded on the first screw, and a sealing plate for sealing the first through hole or the second through hole is provided on the slider. The side of the sealing plate is in contact with the inner wall of the transfer box.

[0007] By adopting the above technical solution, a support plate is set on the mounting base plate, a bearing plate is set on the support plate, a circulating pump is set on the bearing plate, an inlet pipe is set at the inlet end of the circulating pump, and a discharge pipe is set at the outlet end of the circulating pump. A transfer box is set on the bearing plate, and the discharge pipe is inserted into the transfer box and connected to the transfer box. A first through hole and a second through hole are opened on the bottom wall of the transfer box. A conveying box is set on the support plate, and a first inlet hole and a second inlet hole are opened on the top surface of the conveying box. The inlet end of the first dampening solution filter is connected to the first through hole, and the outlet end of the first dampening solution filter is connected to the first inlet hole. The inlet end of the second damping solution filter is connected to the second through hole, and the outlet end of the second damping solution filter is connected to the second feed hole. A sliding groove is provided on the bottom surface of the support plate, and the sliding groove is connected to the transfer box. The first drive motor is set inside the support plate, and the first screw is set on the output shaft of the first drive motor. The first screw is rotatably set in the sliding groove. A slider is threaded on the first screw, and a sealing plate is set on the slider. The side of the sealing plate is in contact with the inner wall of the transfer box. When it is necessary to clean or replace the first damping solution filter, the first drive motor is driven to rotate, and the first drive motor drives the first screw to rotate. The lever drives the slider to slide closer to the first damping solution filter, and the slider drives the sealing plate to slide closer to the first damping solution filter. When the sealing plate slides to the point where the discharge pipe and the second through hole are on the same side of the sealing plate, and the first through hole and the second through hole are on opposite sides of the sealing plate, the damping solution waste liquid at the outlet of the circulating pump flows to the second damping solution filter through the discharge pipe and the second through hole. At this time, the first damping solution filter does not filter the damping solution waste liquid, making it easy to clean or replace the first damping solution filter. When it is necessary to clean or replace the second damping solution filter, the first drive motor is driven to rotate in the opposite direction, and the first drive motor drives the first screw. Rotation causes the first screw to slide the slider closer to the second damping solution filter. The slider then drives the sealing plate to slide closer to the second damping solution filter. When the sealing plate slides to the point where the discharge pipe and the first through hole are on the same side of the sealing plate, and the first and second through holes are on opposite sides of the sealing plate, the damping solution waste liquid at the outlet of the circulating pump flows to the first damping solution filter through the discharge pipe and the first through hole. At this time, the second damping solution filter does not filter the damping solution waste liquid, making it easier to clean or replace the second damping solution filter. The damping filter can be cleaned and replaced without stopping the machine, saving time and improving the filtration efficiency of the damping filter.

[0008] Preferably, the mounting base plate is provided with a mounting platform, the mounting platform has a mounting groove, the top wall of the mounting groove has a holding groove, the holding groove is provided with a first touch switch for controlling the first drive motor switch, the first touch switch is electrically connected to the circulating pump, the holding groove is provided with a positioning post, the positioning post is rotatably provided with a first elastic swing rod that can touch the first touch switch, and the mounting groove is provided with a timing mechanism for driving the first elastic swing rod to swing towards the switch.

[0009] By adopting the above technical solution, an installation platform is provided on the mounting base plate, and an installation groove is provided in the installation platform. A holding groove is provided on the top wall of the installation groove. A first touch switch is provided in the holding groove, and a positioning post is provided in the holding groove. A first elastic swing rod is rotatably mounted on the positioning post. A timing mechanism is provided in the installation groove. When it is necessary to control the rotation of the first drive motor, the timing mechanism drives the first elastic swing rod to swing towards the first touch switch. When the first elastic swing rod swings and touches the first touch switch, the first drive motor starts to rotate, thereby causing the first drive motor to drive the first screw to rotate, and thus controlling the sliding of the sealing plate.

[0010] Preferably, the timing mechanism includes a first timing gear rotatably disposed in the mounting groove, a first driving gear coaxially disposed with the first timing gear, a second timing gear rotatably disposed in the mounting groove, a second driving gear coaxially disposed with the second timing gear, a third timing gear rotatably disposed in the mounting groove, and a second elastic swing arm that can contact the first elastic swing arm. The first driving gear meshes with the second timing gear, the second driving gear meshes with the third timing gear, the second elastic swing arm is disposed on the third timing gear, and a first driving mechanism for driving the first timing gear to rotate is provided in the mounting groove.

[0011] By adopting the above technical solution, the first timing gear is rotatably mounted in the mounting groove, and the first driving gear is coaxially mounted with the first timing gear. The second timing gear is rotatably mounted in the mounting groove, and the second driving gear is coaxial with the second timing gear. The third timing gear is rotatably mounted in the mounting groove, and the second elastic rocker arm is mounted on the third timing gear. The first driving gear meshes with the second timing gear, and the second driving gear meshes with the third timing gear. A first driving mechanism for driving the first timing gear to rotate is provided in the mounting groove. The first driving mechanism drives the first timing gear to rotate, the first timing gear drives the second timing gear to rotate, and the second timing gear drives the third timing gear to rotate. When the third timing gear rotates for a certain period of time, the second elastic rocker arm contacts the first elastic rocker arm, causing the first elastic rocker arm to swing. The first elastic rocker arm swings and contacts the first touch switch. This allows a certain time to be set to control the rotation of the first driving motor, thereby controlling the sealing plate to slide after a certain time. Furthermore, a certain time can be set to allow the dampening system to automatically complete the replacement of the dampening filter.

[0012] Preferably, the first drive mechanism includes a second drive motor disposed in the mounting slot, a second screw fixed on the output shaft of the second drive motor, and a first drive gear disposed on the second screw. The first drive gear meshes with the first timing gear, and a first control mechanism for controlling the switch of the second drive motor is disposed in the mounting slot.

[0013] By adopting the above technical solution, the second drive motor is set in the mounting groove, the second screw is fixed on the output shaft of the second drive motor, the first drive gear is set on the second screw, and the first drive gear meshes with the first timing gear. A first control mechanism for controlling the switch of the second drive motor is set in the mounting groove. The first control mechanism controls the rotation of the second drive motor, the second drive motor drives the second screw to rotate, the second screw drives the first drive gear to rotate, and the first drive gear drives the first timing gear to rotate, thereby facilitating the control of when the timing mechanism starts timing.

[0014] Preferably, a sliding groove is formed on the top surface of the mounting base plate, a sliding groove is formed on the side wall of the sliding groove, and a receiving groove is formed on the side wall of the sliding groove. The first control mechanism includes a second touch switch for controlling the second drive motor switch, a touch block that can abut against the second touch switch, a third swing rod that is oscillatingly disposed in the receiving groove, and a rotating rod that is rotatably disposed in the receiving groove. The second touch switch is disposed in the receiving groove, the touch block is disposed on the third swing rod, the third swing rod is disposed on the rotating rod, and a second drive mechanism for driving the rotating rod to rotate is provided in the sliding groove.

[0015] By adopting the above technical solution, a sliding groove is provided on the top surface of the mounting base plate, a sliding groove is provided on the side wall of the sliding groove, and a receiving groove is provided on the side wall of the sliding groove. The second touch switch is set in the receiving groove, a rotating rod is rotatably set in the receiving groove, and a third swing rod is set on the rotating rod. A second drive mechanism for driving the rotating rod to rotate is provided in the sliding groove. The rotating rod is controlled to rotate by the second drive mechanism, and the rotation drives the third swing rod to swing, so that the touch block touches the second touch switch, which facilitates the control of the second drive motor switch.

[0016] Preferably, a rotating groove is formed on the bottom wall of the slide groove, and the second driving mechanism includes a first sliding rod slidably disposed in the slide groove, a rack disposed on the first sliding rod, and a second driving gear disposed in the rotating groove. The second driving gear is disposed on the rotating rod, and the rack meshes with the second driving gear. A third driving mechanism for driving the first sliding rod to slide is provided in the slide groove.

[0017] By adopting the above technical solution, a rotating groove is provided on the bottom wall of the slide groove. The first sliding rod is slidably disposed in the slide groove, and a rack is disposed on the first sliding rod. The second drive gear is disposed in the rotating groove and on the rotating rod. The rack and the second drive gear mesh with each other. A third drive mechanism is provided in the slide groove to drive the first sliding rod to slide. The first sliding rod is controlled to slide by the third drive mechanism. The first sliding rod drives the rack to slide. The rack drives the second drive gear to rotate. The second drive gear drives the rotating rod to rotate, thereby controlling the swing of the third rocker arm, which facilitates the control of the second touch switch.

[0018] Preferably, a first limiting groove is formed on the top wall of the slide groove, and a first reset component is provided in the first limiting groove. The first reset component includes a reset block slidably disposed in the first limiting groove and a reset spring disposed in the first limiting groove. The reset block is disposed on the first sliding rod, one end of the reset spring abuts against the side wall of the first limiting groove away from the slide groove, and the other end of the reset spring abuts against the side of the reset block away from the slide groove.

[0019] By adopting the above technical solution, a first limiting groove is provided on the top wall of the slide groove, a reset block is slidably disposed in the first limiting groove, the reset block is disposed on the first sliding rod, a reset spring is disposed in the first limiting groove, one end of the reset spring abuts against the side wall of the first limiting groove away from the slide groove, and the other end of the reset spring abuts against the side of the reset block away from the slide groove, so as to facilitate the reset of the position of the first sliding block.

[0020] Preferably, the third driving mechanism includes a second sliding rod disposed in the sliding groove, a first inclined surface disposed on the side of the first sliding rod near the second sliding rod, the side of the second sliding rod near the first sliding rod abutting against the first inclined surface, a material holding bucket disposed on the mounting base plate, the bottom surface of the material holding bucket abutting against the top surface of the second sliding rod, and a discharge pipe disposed in the material holding bucket.

[0021] By adopting the above technical solution, the second sliding rod is set in the sliding groove, and the side of the first sliding rod near the second sliding rod is provided with a first inclined surface. The side of the second sliding rod near the first sliding rod abuts against the first inclined surface. A material holding bucket is provided on the mounting base plate, and the bottom surface of the material holding bucket abuts against the top surface of the second sliding rod. The discharge pipe is set in the material holding bucket. When the material holding bucket is placed on the mounting base plate to receive the filtered damping solution, the material holding bucket squeezes the second sliding rod to slide downward. The second sliding rod pushes the first sliding rod to slide away from the sliding groove. The first sliding rod drives the rack to slide away from the sliding groove. The rack drives the second drive gear to rotate. The second drive gear drives the rotating rod to rotate. The rotating rod drives the contact block to contact the second contact switch, causing the second drive motor to rotate. The second drive motor drives the second screw to rotate. The second screw drives the first drive gear to rotate. The first drive gear drives the first timing gear to rotate, thereby causing the timing structure to start timing. When the damping filter filters the damping solution, it is convenient for the timing mechanism to record the working time of the damping filter.

[0022] Preferably, a second limiting groove is provided on the side wall of the sliding groove, and a second reset assembly is provided in the second limiting groove. The second reset assembly includes a second reset block slidably disposed in the second limiting groove and a second reset spring disposed in the second limiting groove. The second reset block is disposed on the second sliding rod, one end of the second reset spring abuts against the bottom wall of the second limiting groove, and the other end of the second reset spring abuts against the bottom surface of the second reset block.

[0023] By adopting the above technical solution, a second limiting groove is provided on the top wall of the sliding groove. The second reset block is slidably disposed in the second limiting groove and is disposed on the second sliding rod. The second reset spring is disposed in the second limiting groove. One end of the second reset spring abuts against the bottom wall of the second limiting groove, and the other end of the second reset spring abuts against the bottom surface of the second reset block. When the material container is full and the material container is removed, under the elastic force of the second reset spring, the second sliding rod slides away from the first sliding rod. Under the elastic force of the first reset spring, the first sliding rod slides away from the second drive gear. The rack drives the second drive gear to rotate in the opposite direction. The second drive gear drives the rotating rod to rotate in the opposite direction. The rotating rod drives the contact block away from the second contact switch, so that the second drive motor stops rotating. The second drive motor drives the second screw to stop rotating. The second screw drives the first drive gear to stop rotating. The first drive gear drives the first timing gear to stop rotating, so that the timing structure stops timing. When a new material container is replaced, the timing structure restarts timing, which facilitates the timing mechanism to record the working time of the dampening filter.

[0024] Preferably, a prompting mechanism is provided on the top surface of the mounting platform. The prompting mechanism includes a warning light and a voice broadcaster disposed on the mounting platform. The warning light is electrically connected to the first touch switch, and the voice broadcaster is electrically connected to the first touch switch.

[0025] By adopting the above technical solution, the warning light and the voice broadcaster are installed on the mounting platform. The warning light and the voice broadcaster are electrically connected to the first touch switch. When the second elastic swing arm touches the first elastic swing arm, and the first elastic swing arm swings and touches the first touch switch, the warning light starts to flash and the voice broadcaster starts to alarm, prompting the staff that the dampening filter on one side of the sealing plate has been used for a long time and needs to be replaced or cleaned. The sealing plate is automatically pushed to slide, and the dampening filter on the other side of the sealing plate is used for filtration. When the dampening liquid is collected by the container, the third timing gear continues to drive the second elastic swing arm to rotate. The third timing gear continues to drive the second elastic swing arm away from the first elastic swing arm, and the first elastic swing arm moves away from the first touch switch. The timing mechanism continues to time, but the first drive motor stops rotating. At this time, the sealing plate completes to slide, which makes it convenient for the staff to replace or clean the filter in time.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. A support plate is mounted on the mounting base plate, and a bearing plate is mounted on the support plate. A circulating pump is mounted on the bearing plate, with an inlet pipe at the inlet end and a outlet pipe at the outlet end. A transfer box is mounted on the bearing plate, and the outlet pipe is inserted into and connected to the transfer box. A first through hole and a second through hole are provided on the bottom wall of the transfer box. A conveyor box is mounted on the support plate, with a first inlet hole and a second inlet hole on its top surface. The inlet end of the first dampening solution filter is connected to the first through hole, and the outlet end of the first dampening solution filter is connected to the first inlet hole. A second dampening solution filter... The inlet end of the device is connected to the second through hole, and the outlet end of the second damping solution filter is connected to the second feed hole. A sliding groove is provided on the bottom surface of the support plate, and the sliding groove is connected to the transfer box. The first drive motor is set inside the support plate, and the first screw is set on the output shaft of the first drive motor. The first screw is rotatably set in the sliding groove, and a slider is threaded on the first screw. A sealing plate is set on the slider, and the side of the sealing plate is in contact with the inner wall of the transfer box. When it is necessary to clean or replace the first damping solution filter, the first drive motor is driven to rotate, the first drive motor drives the first screw to rotate, and the first screw drives the slider. The slider slides towards the first damping solution filter, causing the sealing plate to slide towards it as well. When the sealing plate slides until the discharge pipe and the second through hole are on the same side of the sealing plate, and the first and second through holes are on opposite sides of the sealing plate, the damping solution waste liquid from the circulating pump outlet flows to the second damping solution filter through the discharge pipe and the second through hole. At this time, the first damping solution filter does not filter the damping solution waste liquid, facilitating cleaning or replacement of the first damping solution filter. When cleaning or replacement of the second damping solution filter is required, the first drive motor is driven to rotate in the opposite direction, causing the first screw to rotate. The first screw drives the slider to slide closer to the second damping solution filter. The slider drives the sealing plate to slide closer to the second damping solution filter. When the sealing plate slides to the point where the discharge pipe and the first through hole are on the same side of the sealing plate, and the first through hole and the second through hole are on opposite sides of the sealing plate, the damping solution waste liquid at the outlet of the circulating pump flows to the first damping solution filter through the discharge pipe and the first through hole. At this time, the second damping solution filter does not filter the damping solution waste liquid, which makes it easy to clean or replace the second damping solution filter. The damping filter can be cleaned and replaced without stopping the machine, saving time and improving the filtration efficiency of the damping filter.

[0028] 2. A first timing gear is rotatably mounted in the mounting slot, and a first driving gear is coaxially mounted with the first timing gear. A second timing gear is rotatably mounted in the mounting slot, and a second driving gear is coaxially mounted with the second timing gear. A third timing gear is rotatably mounted in the mounting slot. A second elastic rocker arm is mounted on the third timing gear. The first driving gear meshes with the second timing gear, and the second driving gear meshes with the third timing gear. A first driving mechanism for driving the first timing gear to rotate is provided in the mounting slot. The first driving mechanism drives the first timing gear to rotate, which in turn drives the second timing gear to rotate, and the second timing gear drives the third timing gear to rotate. When the third timing gear rotates for a certain period of time, the second elastic rocker arm contacts the first elastic rocker arm, causing the first elastic rocker arm to swing. The first elastic rocker arm swings and contacts the first touch switch. This allows a certain time to be set to control the rotation of the first driving motor, thereby controlling the sealing plate to slide after a certain time. Furthermore, a certain time can be set to allow the dampening system to automatically complete the replacement of the dampening filter.

[0029] 3. A warning light and a voice announcer are mounted on the mounting platform. The warning light and the voice announcer are electrically connected to the first touch switch. When the second elastic swing arm touches the first elastic swing arm, and the first elastic swing arm swings and touches the first touch switch, the warning light starts flashing, and the voice announcer starts alarming, prompting the staff that the dampening filter on one side of the sealing plate has been used for a long time and needs to be replaced or cleaned. The sealing plate is automatically pushed to slide, and the dampening filter on the other side of the sealing plate is used for filtration. When the dampening liquid is collected in the container, the third timing gear continues to drive the second elastic swing arm to rotate. The third timing gear continues to drive the second elastic swing arm away from the first elastic swing arm, and the first elastic swing arm moves away from the first touch switch. The timing mechanism continues to time, but the first drive motor stops rotating. At this time, the sealing plate completes the sliding, which is convenient for the staff to replace or clean the filter in time. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the low-VOC damping system of the offset printing machine in the embodiments of this application.

[0031] Figure 2 This is a cross-sectional view of the mounting platform in an embodiment of this application.

[0032] Figure 3 This is a cross-sectional view of the mounting base plate in an embodiment of this application.

[0033] Figure 4 This is a cross-sectional view of the support plate and the bearing plate in the embodiments of this application.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Mounting base plate; 11. Support plate; 12. Bearing plate; 121. Adapter box; 1211. First through hole; 1212. Second through hole; 1213. First connecting pipe; 1214. Second connecting pipe; 122. Circulating pump; 1221. Inlet pipe; 1222. Outlet pipe; 123. Sliding groove; 124. First drive motor; 125. First screw; 126. Slider; 127. Sealing plate; 13. Conveying box; 131. First inlet hole; 132. Second inlet hole; 33. Discharge hole; 134. Discharge pipe; 1341. Valve; 14. Sliding groove; 141. Second limiting groove; 142. Second reset assembly; 1421. Reset block two; 1422. Reset spring two; 15. Material holding bucket; 16. Sliding groove; 161. First limiting groove; 162. First reset assembly; 1621. Reset block one; 1622. Reset spring one; 17. Mounting platform; 171. Mounting groove; 1711. First rotating column; 1712. Second rotating column; 1713. Three rotating columns; 172, holding slot; 1721, first touch switch; 1722, positioning column; 1723, first elastic rocker arm; 2, timing mechanism; 21, first timing gear; 22, first driving gear; 23, second timing gear; 24, second driving gear; 25, third timing gear; 26, second elastic rocker arm; 3, first drive mechanism; 31, second drive motor; 32, second screw; 33, first drive gear; 4, first control mechanism; 41, second touch switch; 42. Point contact block; 43. Third rocker arm; 44. Rotating rod; 5. Second drive mechanism; 51. First sliding rod; 511. First inclined plane; 52. Rack; 53. Second drive gear; 6. Third drive mechanism; 61. Second sliding rod; 611. Second inclined plane; 7. Indication mechanism; 71. Warning light; 72. Voice alarm; 8. First dampening solution filter; 81. First sleeve; 82. First hose; 9. Second dampening solution filter; 91. Second sleeve; 92. Second hose. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0037] This application discloses a low-VOC damping system for offset printing machines. (Refer to...) Figure 1 , Figure 2 and Figure 3 As shown, the low-VOC damping system of the offset printing machine includes a mounting base plate 1, a timing mechanism 2, a first drive mechanism 3, a first control mechanism 4, a second drive mechanism 5, a third drive mechanism 6, and a prompting mechanism 7. The length direction of the mounting base plate 1 is parallel to the ground, and a support plate 11 is horizontally welded and fixed on the top surface of the mounting base plate 1. The height direction of the support plate 11 is perpendicular to the top surface of the mounting base plate 1.

[0038] Reference Figure 1 As shown, the length direction of the support plate 11 is parallel to the top surface of the mounting base plate 1. The length of the support plate 11 is the same as the width of the mounting plate. The two sides of the support plate 11 in the width direction correspond one-to-one with the two sides of the mounting base plate 1 in the length direction. The two sides of the support plate 11 in the width direction are flush with the two sides of the mounting base plate 1 in the length direction.

[0039] Reference Figure 1 As shown, a bearing plate 12 is horizontally welded and fixed to the side of the support plate 11. The length direction of the bearing plate 12 is the same as the length direction of the mounting base plate 1. The top surface of the bearing plate 12 is flush with the top surface of the support plate 11. The two sides of the bearing plate 12 in the length direction correspond one-to-one with the two sides of the support plate 11 in the height direction. The two sides of the bearing plate 12 in the length direction are respectively flush with the two sides of the support plate 11 in the height direction.

[0040] Reference Figure 1 and Figure 4 As shown, a transfer box 121 is horizontally welded and fixed on the bottom surface of the support plate 12. The length direction of the transfer box 121 is the same as that of the support plate 12. The side of the transfer box 121 near the support plate 11 is in contact with the support plate 11. The width of the transfer box 121 is smaller than the width of the support plate 12. A first through hole 1211 and a second through hole 1212 are provided on the bottom wall of the transfer box 121. The first through hole 1211 and the second through hole 1212 are symmetrical about the center line of the length direction of the bottom surface of the transfer box 121.

[0041] Reference Figure 1 and Figure 4 As shown, a circulation pump 122 is horizontally arranged on the top surface of the support plate 12. The inlet end of the circulation pump 122 is connected to the feed pipe 1221, and the outlet end of the circulation pump 122 is connected to the discharge pipe 1222. The discharge pipe 1222 is inserted into the transfer box 121 and is connected to the transfer box 121.

[0042] Reference Figure 1 and Figure 4 As shown, a circulation pump 122 is horizontally arranged on the top surface of the support plate 12. The inlet end of the circulation pump 122 is connected to a conveying box 13 which is horizontally welded and fixed on the side of the support plate 11. The length direction of the conveying box 13 is the same as the length direction of the support plate 12. The length of the conveying box 13 is equal to the length of the support plate 12. The width of the conveying box 13 is equal to the width of the support plate 12. The conveying box 13 is located directly below the support plate 12.

[0043] Reference Figure 1 and Figure 4As shown, the two sides of the conveyor box 13 in the length direction correspond one-to-one with the two sides of the support plate 11 in the height direction. The two sides of the conveyor box 13 in the length direction are flush with the two sides of the support plate 11 in the height direction. A first inlet hole 131 and a second inlet hole 132 are provided on the top surface of the conveyor box 13. The first inlet hole 131 and the second inlet hole 132 are symmetrical about the center line of the top surface of the conveyor box 13 in the length direction.

[0044] Reference Figure 1 and Figure 4 As shown, the conveying box 13 has a discharge hole 133 on the side near the support plate 11. A discharge pipe 134 is installed in the discharge hole 133. The discharge pipe 134 passes through the support plate 11 and a valve 1341 is installed on the discharge pipe 134.

[0045] Reference Figure 1 and Figure 4 As shown, a first connecting pipe 1213 is horizontally welded and fixed to the inner wall of the first through hole 1211. The length direction of the first connecting pipe 1213 is perpendicular to the top surface of the mounting base plate 1, and the axis of the first connecting pipe 1213 coincides with the axis of the first through hole 1211. A second connecting pipe 1214 is horizontally welded and fixed to the inner wall of the second through hole 1212. The length direction of the second connecting pipe 1214 is perpendicular to the top surface of the mounting base plate 1, and the axis of the second connecting pipe 1214 coincides with the axis of the second through hole 1212.

[0046] Reference Figure 1 and Figure 4 As shown, the first dampening liquid filter 8 and the second dampening liquid filter 9 are both disposed between the support plate 12 and the conveying box 13. The inlet end of the first dampening liquid filter 8 is provided with a first sleeve 81. The length direction of the first sleeve 81 is the same as the length direction of the first connecting pipe 1213. The first sleeve 81 is threaded into the first connecting pipe 1213 and the first sleeve 81 is connected to the first connecting pipe 1213.

[0047] Reference Figure 1 and Figure 4 As shown, the inlet end of the second lubricant filter 9 is provided with a second sleeve 91. The length direction of the second sleeve 91 is the same as the length direction of the second connecting pipe 1214. The second sleeve 91 is threaded into the second connecting pipe 1214 and is connected to the second connecting pipe 1214.

[0048] Reference Figure 1 and Figure 4As shown, the outlet end of the first dampening liquid filter 8 is provided with a first hose 82, and the outlet end of the second dampening liquid filter 9 is provided with a second hose 92. The first hose 82 is horizontally inserted into the first through hole 1211 and is connected to the first through hole 1211. The second hose 92 is horizontally inserted into the second through hole 1212 and is connected to the second through hole 1212.

[0049] Reference Figure 4 As shown, a sliding groove 123 is provided on the bottom surface of the support plate 12. The length direction of the sliding groove 123 is the same as the length direction of the support plate 12. A first drive motor 124 is provided inside the support plate 12. A first screw 125 is horizontally welded and fixed on the output shaft of the first drive motor 124. The length direction of the first screw 125 is the same as the length direction of the support plate 12.

[0050] Reference Figure 4 As shown, the axis of the first screw 125 coincides with the axis of the output shaft of the first drive motor 124. The first screw 125 is rotatably disposed in the sliding groove 123, and the end of the first screw 125 away from the first drive motor 124 is rotatably inserted into the bearing plate 12.

[0051] Reference Figure 4 As shown, a slider 126 is threaded onto the first screw 125. The slider 126 is horizontally positioned within the sliding groove 123. The side of the slider 126 near the sliding groove 123 is in contact with the side wall of the sliding groove 123. A sealing plate 127 is horizontally welded and fixed to the bottom surface of the slider 126. The sealing plate 127 is horizontally slidably positioned within the adapter box 121. The bottom surface of the sealing plate 127 is in close contact with the inner bottom wall of the adapter box 121, and the side of the sealing plate 127 near the inner wall of the adapter box 121 is in close contact with the inner wall of the adapter box 121.

[0052] Reference Figure 1 and Figure 3 As shown, a sliding groove 14 is provided on the top surface of the mounting base plate 1. The length direction of the sliding groove 14 is perpendicular to the top surface of the mounting base plate 1. The third drive mechanism 6 includes a second sliding rod 61, which is horizontally slidably disposed in the sliding groove 14. The length direction of the second sliding rod 61 is the same as the length direction of the sliding groove 14.

[0053] Reference Figure 1 As shown, a material holding bucket 15 is provided on the mounting base plate 1. The bottom surface of the material holding bucket 15 abuts against the top surface of the second sliding rod 61, and the discharge pipe 134 is provided inside the material holding bucket 15.

[0054] Reference Figure 3As shown, a second limiting groove 141 is provided on the side wall of the sliding groove 14. The length direction of the second limiting groove 141 is the same as the length direction of the sliding groove 14. A second reset component 142 is provided in the second limiting groove 141. The second reset component 142 includes a second reset block 1421 and a second reset spring 1422.

[0055] Reference Figure 3 As shown, the second reset block 1421 is horizontally welded and fixed to the side of the second sliding rod 61. The second reset block 1421 is slidably disposed in the second limiting groove 141. The second reset spring 1422 is horizontally disposed in the second limiting groove 141. One end of the second reset spring 1422 abuts against the bottom wall of the second limiting groove 141, and the other end of the second reset spring 1422 abuts against the bottom surface of the second reset block 1421.

[0056] Reference Figure 3 As shown, a sliding groove 16 is provided on the side wall of the sliding groove 14. The length direction of the sliding groove 16 is the same as the width direction of the mounting base plate 1. A first limiting groove 161 is provided on the top wall of the sliding groove 16. The length direction of the first limiting groove 161 is the same as the length direction of the sliding groove 16. A rotating groove is provided on the bottom wall of the sliding groove 16. A receiving groove is provided on the side wall of the sliding groove 16.

[0057] Reference Figure 3 As shown, the second drive mechanism 5 includes a first sliding rod 51, a rack 52, and a second drive gear 53. The first sliding rod 51 is slidably disposed in the slide groove 16. The length direction of the first sliding rod 51 is the same as the length direction of the slide groove 16. A first inclined surface 511 is provided on the side of the first sliding rod 51 near the second sliding rod 61, and a second inclined surface 611 is provided on the side of the second sliding rod 61 near the first sliding rod 51. The second inclined surface 611 abuts against the first inclined surface 511.

[0058] Reference Figure 3 As shown, the rack 52 is horizontally welded and fixed to the bottom surface of the first sliding rod 51. The length direction of the rack 52 is the same as the length direction of the first sliding rod 51. The rack 52 is slidably disposed in the slide groove 16. The second drive gear 53 is rotatably disposed in the rotating groove. The second drive gear 53 meshes with the rack 52.

[0059] Reference Figure 3As shown, a first reset assembly 162 is provided in the first limiting groove 161. The first reset assembly 162 includes a reset block 1621 and a reset spring 1622. The reset block 1621 is horizontally welded and fixed to the top surface of the first sliding rod 51. The reset block 1621 is slidably disposed in the first limiting groove 161. The reset spring 1622 is horizontally disposed in the first limiting groove 161. One end of the reset spring 1622 abuts against the side wall of the first limiting groove 161 away from the sliding groove 14, and the other end of the reset spring 1622 abuts against the side of the reset block 1621 away from the sliding groove 14.

[0060] Reference Figure 1 and Figure 3 As shown, the first control mechanism 4 includes a second touch switch 41, a touch block 42, a third rocker arm 43, and a rotating rod 44. The second touch switch 41 is horizontally fixed on the inner wall of the receiving groove. The rotating rod 44 is rotatably disposed in the receiving groove. Both ends of the rotating rod 44 are rotatably inserted into the mounting base plate 1. The length direction of the rotating rod 44 is the same as the length direction of the mounting base plate 1. The second drive gear 53 is welded and fixed to the rotating rod 44. The axis of the second drive gear 53 coincides with the axis of the rotating rod 44.

[0061] Reference Figure 3 As shown, the third rocker arm 43 is horizontally welded and fixed to the side of the rotating rod 44. The length direction of the third rocker arm 43 is perpendicular to the axis of the rotating rod 44. The contact block 42 is horizontally fixed to the side of the third rocker arm 43 near the second contact switch 41.

[0062] Reference Figure 1 As shown, a mounting platform 17 is horizontally welded and fixed on the top surface of the mounting base plate 1. The height direction of the mounting platform 17 is perpendicular to the top surface of the mounting base plate 1. The height of the mounting platform 17 is the same as the height of the support plate 11. The side of the mounting platform 17 near the support plate 11 is in contact with the support plate 11. The mounting platform 17 and the bearing plate 12 are located on both sides of the support plate 11.

[0063] Reference Figure 2 As shown, an installation groove 171 is provided inside the mounting platform 17. The length direction of the installation groove 171 is the same as the height direction of the mounting platform 17. A holding groove 172 is provided on the top wall of the installation groove 171. The length direction of the holding groove 172 is the same as the height direction of the mounting platform 17.

[0064] Reference Figure 1 and Figure 2As shown, the first drive mechanism 3 includes a second drive motor 31, a second screw 32, and a first drive gear 33. The second drive motor 31 is horizontally welded and fixed to the inner wall of the mounting groove 171. The second screw 32 is horizontally welded and fixed to the output shaft of the second drive motor 31. The axis of the second screw 32 is in the same direction as the axis of the output shaft of the second drive motor 31, and the length direction of the second screw 32 is in the same direction as the length direction of the mounting base plate 1.

[0065] Reference Figure 2 As shown, the first drive gear 33 is welded and fixed to the second screw 32, and the axis of the first drive gear 33 coincides with the axis of the second screw 32.

[0066] Reference Figure 1 and Figure 2 As shown, a first rotating post 1711, a second rotating post 1712, and a third rotating post 1713 are rotatably disposed on the inner wall of the mounting groove 171. The length directions of the first rotating post 1711, the second rotating post 1712, and the third rotating post 1713 are all the same as the length direction of the mounting base plate 1. The second rotating post 1712 is located directly above the first rotating post 1711, and the third rotating post 1713 is located directly above the second rotating post 1712.

[0067] Reference Figure 2 As shown, the timing mechanism 2 includes a first timing gear 21, a first driving gear 22, a second timing gear 23, a second driving gear 24, a third timing gear 25, and a second elastic rocker arm 26. The first timing gear 21 is welded and fixed to the first rotating column 1711, and the axis of the first timing gear 21 coincides with the axis of the first rotating column 1711. The first driving gear 22 is welded and fixed to the first rotating column 1711, and the axis of the first driving gear 22 coincides with the axis of the first rotating column 1711. The first driving gear 33 meshes with the first timing gear 21.

[0068] Reference Figure 2 As shown, the second timing gear 23 is welded and fixed to the second rotating column 1712, and the axis of the second timing gear 23 coincides with the axis of the second rotating column 1712. The second driving gear 24 is welded and fixed to the second rotating column 1712, and the axis of the second driving gear 24 coincides with the axis of the second rotating column 1712. The first driving gear 22 meshes with the first timing gear 21.

[0069] Reference Figure 1 and Figure 2As shown, the third timing gear 25 is welded and fixed to the third rotating column 1713. The axis of the third timing gear 25 coincides with the axis of the third rotating column 1713. The second driving gear 24 meshes with the third timing gear 25. The second elastic rocker arm 26 is horizontally fixed to the side of the third timing gear 25 away from the second timing gear 23. The length direction of the second elastic rocker arm 26 is the same as the length direction of the mounting base plate 1.

[0070] Reference Figure 1 and Figure 2 As shown, a first touch switch 1721 is horizontally fixed on the inner wall of the holding tank 172. A positioning post 1722 is welded and fixed on the inner wall of the holding tank 172. The length direction of the positioning post 1722 is the same as the length direction of the mounting base plate 1. The two ends of the positioning post 1722 are inserted into the mounting platform 17. A first elastic swing rod 1723 is rotatably mounted on the positioning post 1722. The length direction of the first elastic swing rod 1723 is perpendicular to the top surface of the mounting base plate 1.

[0071] Reference Figure 1 and Figure 2 As shown, the prompting mechanism 7 includes a warning light 71 and a voice alarm 72. The warning light 71 is horizontally fixed on the top surface of the mounting platform 17, and the voice alarm 72 is horizontally fixed on the top surface of the mounting platform 17. The warning light 71 is electrically connected to the first touch switch 1721, and the voice alarm is electrically connected to the first touch switch 1721.

[0072] Reference Figure 1 , Figure 2 and Figure 4 As shown, when the second elastic swing arm 26 touches the first elastic swing arm 1723, and the first elastic swing arm 1723 swings and touches the first touch switch 1721, the warning light 71 starts to flash, and the voice broadcaster starts to alarm, reminding the staff that the dampening filter on one side of the sealing plate 127 has been used for a long time and needs to be replaced or cleaned. It also automatically pushes the sealing plate 127 to slide, and uses the dampening filter on the other side of the sealing plate 127 for filtration. When the material container 15 continues to collect dampening liquid, the third timing gear 25 continues to drive the second elastic swing arm 26 to rotate. The third timing gear 25 continues to drive the second elastic swing arm 26 away from the first elastic swing arm 1723, and the first elastic swing arm 1723 moves away from the first touch switch 1721. The timing mechanism 2 is still timing, but the first drive motor 124 stops rotating. At this time, the sealing plate 127 completes to slide, which makes it convenient for the staff to replace or clean the filter in time.

[0073] The implementation principle of a low-VOC damping system for offset printing machines according to an embodiment of this application is as follows:

[0074] When the first damping solution filter 8 needs cleaning or replacement, the first drive motor 124 is driven to rotate. The first drive motor 124 drives the first screw 125 to rotate. The first screw 125 drives the slider 126 to slide closer to the first damping solution filter 8. The slider 126 drives the sealing plate 127 to slide closer to the first damping solution filter 8. When the sealing plate 127 slides so that the discharge pipe 1222 and the second through hole 1212 are on the same side of the sealing plate 127, and the first through hole 1211 and the second through hole 1212 are respectively located on both sides of the sealing plate 127, the damping solution waste liquid at the outlet of the circulating pump 122 flows to the second damping solution filter 9 through the discharge pipe 1222 and the second through hole 1212. At this time, the first damping solution filter 8 does not filter the damping solution waste liquid, which facilitates cleaning or replacement of the first damping solution filter 8. When the second damping solution filter 9 needs cleaning or replacement, the first drive motor 124 is driven to rotate. The first drive motor 124 rotates in the opposite direction, driving the first screw 125 to rotate. The first screw 125 drives the slider 126 to slide towards the second damping solution filter 9. The slider 126 drives the sealing plate 127 to slide towards the second damping solution filter 9. When the sealing plate 127 slides so that the discharge pipe 1222 and the first through hole 1211 are on the same side of the sealing plate 127, and the first through hole 1211 and the second through hole 1212 are respectively located on both sides of the sealing plate 127, the damping solution waste liquid at the outlet of the circulating pump 122 flows to the first damping solution filter 8 through the discharge pipe 1222 and the first through hole 1211. At this time, the second damping solution filter 9 does not filter the damping solution waste liquid, which facilitates cleaning or replacement of the second damping solution filter 9. The damping filter can be cleaned and replaced without stopping the machine, saving time and improving the filtration efficiency of the damping filter.

[0075] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A low-VOC damping system for an offset printing machine, comprising a mounting base plate (1), a support plate (11) disposed on the mounting base plate (1), a first damping solution filter (8) disposed above the mounting base plate (1), and a second damping solution filter (9) disposed above the mounting base plate (1), characterized in that: A support plate (12) is provided on the support plate (11), and a circulation pump (122) is provided on the support plate (12). The inlet end of the circulation pump (122) is provided with an inlet pipe (1221) for extracting dampening solution waste liquid, and the outlet end of the circulation pump (122) is provided with a discharge pipe (1222). A transfer box (121) is provided on the support plate (12), and the discharge pipe (1222) is inserted into the transfer box (121). The discharge pipe (1222) is connected to the transfer box (121). A first through hole (1211) and a second through hole (1212) are provided on the bottom wall of the support plate (11). A conveying box (13) is provided on the support plate (11). A first inlet hole (131) and a second inlet hole (132) are provided on the top surface of the conveying box (13). A discharge hole (133) is provided on the side of the conveying box (13). A discharge pipe (134) is provided in the discharge hole (133). The discharge pipe (134) passes through the support plate (11). A valve (1341) is provided on the discharge pipe (134). The inlet end of the first damping solution filter (8) is connected to the first through hole (1211), and the outlet end of the first damping solution filter (8) is connected to the first feed hole (131). The inlet end of the second damping solution filter (9) is connected to the second through hole (1212), and the outlet end of the second damping solution filter (9) is connected to the second feed hole (132). A sliding groove (123) is provided on the bottom surface of the support plate (12), and the sliding groove (123) is connected to the adapter box (121). A first drive motor (124) is provided inside the plate (12). A first screw (125) is provided on the output shaft of the first drive motor (124). The first screw (125) is rotatably disposed in the sliding groove (123). A slider (126) is threaded on the first screw (125). A sealing plate (127) for sealing the first through hole (1211) or the second through hole (1212) is provided on the slider (126). The side of the sealing plate (127) is in contact with the inner wall of the adapter box (121). The mounting base plate (1) is provided with a mounting platform (17), the mounting platform (17) is provided with a mounting groove (171), the top wall of the mounting groove (171) is provided with a holding groove (172), the holding groove (172) is provided with a first touch switch (1721) for controlling the switch of the first drive motor (124), the holding groove (172) is provided with a positioning post (1722), the positioning post (1722) is rotatably provided with a first elastic swing rod (1723) that can touch the first touch switch (1721), and the mounting groove (171) is provided with a timing mechanism (2) for driving the first elastic swing rod (1723) to swing towards the switch; The timing mechanism (2) includes a first timing gear (21) rotatably disposed in the mounting groove (171), a first driving gear (22) coaxially disposed with the first timing gear (21), a second timing gear (23) rotatably disposed in the mounting groove (171), a second driving gear (24) coaxially disposed with the second timing gear (23), a third timing gear (25) rotatably disposed in the mounting groove (171), and a second elastic rocker arm (26) that can touch the first elastic rocker arm (1723). The first driving gear (22) meshes with the second timing gear (23), the second driving gear (24) meshes with the third timing gear (25), and the second elastic rocker arm (26) is disposed on the third timing gear (25). A first driving mechanism (3) for driving the first timing gear (21) to rotate is disposed in the mounting groove (171).

2. The low-VOC damping system for offset printing machines according to claim 1, characterized in that: The first drive mechanism (3) includes a second drive motor (31) disposed in the mounting groove (171), a second screw (32) fixed on the output shaft of the second drive motor (31), and a first drive gear (33) disposed on the second screw (32). The first drive gear (33) meshes with the first timing gear (21). A first control mechanism (4) for controlling the switch of the second drive motor (31) is disposed in the mounting groove (171).

3. The low-VOC damping system for offset printing machines according to claim 2, characterized in that: The mounting base plate (1) has a sliding groove (14) on its top surface, a sliding groove (16) on its side wall, and a receiving groove on its side wall. The first control mechanism (4) includes a second touch switch (41) for controlling the second drive motor (31), a touch block (42) that can abut against the second touch switch (41), a third swing rod (43) that is oscillating in the receiving groove, and a rotating rod (44) that is rotatably disposed in the receiving groove. The second touch switch (41) is disposed in the receiving groove, the touch block (42) is disposed on the third swing rod (43), the third swing rod (43) is disposed on the rotating rod (44), and a second drive mechanism (5) for driving the rotating rod (44) to rotate is disposed in the sliding groove (16).

4. A low-VOC damping system for offset printing machines according to claim 3, characterized in that: The bottom wall of the slide groove (16) is provided with a rotating groove. The second driving mechanism (5) includes a first sliding rod (51) slidably disposed in the slide groove (16), a rack (52) disposed on the first sliding rod (51), and a second driving gear (53) disposed in the rotating groove. The second driving gear (53) is disposed on the rotating rod (44). The rack (52) meshes with the second driving gear (53). The slide groove (14) is provided with a third driving mechanism (6) for driving the first sliding rod (51) to slide.

5. A low-VOC damping system for offset printing machines according to claim 4, characterized in that: A first limiting groove (161) is provided on the top wall of the slide groove (16). A first reset assembly (162) is provided in the first limiting groove (161). The first reset assembly (162) includes a reset block (1621) slidably disposed in the first limiting groove (161) and a reset spring (1622) disposed in the first limiting groove (161). The reset block (1621) is disposed on the first sliding rod (51). One end of the reset spring (1622) abuts against the side wall of the first limiting groove (161) away from the slide groove (14), and the other end of the reset spring (1622) abuts against the side of the reset block (1621) away from the slide groove (14).

6. A low-VOC damping system for offset printing machines according to claim 5, characterized in that: The third driving mechanism (6) includes a second sliding rod (61) disposed in the sliding groove (14). The side of the first sliding rod (51) near the second sliding rod (61) is provided with a first inclined surface (511). The side of the second sliding rod (61) near the first sliding rod (51) abuts against the first inclined surface (511). A material holding bucket (15) is disposed on the mounting base plate (1). The bottom surface of the material holding bucket (15) abuts against the top surface of the second sliding rod (61). The discharge pipe (134) is disposed in the material holding bucket (15).

7. A low-VOC damping system for offset printing machines according to claim 6, characterized in that: A second limiting groove (141) is provided on the side wall of the sliding groove (14). A second reset assembly (142) is provided in the second limiting groove (141). The second reset assembly (142) includes a reset block two (1421) slidably disposed in the second limiting groove (141) and a reset spring two (1422) disposed in the second limiting groove (141). The reset block two (1421) is disposed on the second sliding rod (61). One end of the reset spring two (1422) abuts against the bottom wall of the second limiting groove (141), and the other end of the reset spring two (1422) abuts against the bottom surface of the reset block two (1421).

8. A low-VOC damping system for offset printing machines according to claim 1, characterized in that: A prompting mechanism (7) is provided on the top surface of the mounting platform (17). The prompting mechanism (7) includes a warning light (71) and a voice broadcaster provided on the mounting platform (17). The warning light (71) is electrically connected to the first touch switch (1721), and the voice broadcaster is electrically connected to the first touch switch (1721).

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