Intermittent flexographic printing mechanism with water cooling structure

Abstract

The utility model discloses an intermittent flexographic printing mechanism with a water cooling structure, and belongs to the field of printing equipment. The traction module is used for pulling a printing material; the swing roller module is used for intermittently returning the printing material; the intermittent flexographic printing module is used for realizing printing; the UV curing module is used for curing the printing ink; the water cooling module is used for cooling the printing material when the printing ink is cured; the traction module, the swing module, the intermittent flexographic printing module, the UV curing module and the water cooling module are all arranged on the rack, and the water cooling module and the UV curing module are oppositely arranged; the intermittent flexographic printing mechanism is further provided with an intermittent flexographic printing path, and the intermittent flexographic printing path sequentially passes through the traction module, the swing roller module, the intermittent flexographic printing module, the water cooling module and the swing roller module. Compared with the prior art, when printing ink is printed on a printing material for UV curing, the printing material can be cooled through the water cooling module, so that the printing material is prevented from being scalded by the UV curing module.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of printing equipment, especially relates to a intermittent flexographic mechanism with water cooling structure. BACKGROUND

[0002] Flexographic printing, also commonly referred to as flexographic printing, is a printing method using a flexible plate and transferring ink through a screen anilox roller. The printing plate of flexographic printing is usually made of rubber or flexible plastic material, which can well adapt to various irregular surfaces, has high printing speed and bright color characteristics, and is commonly used for printing materials such as packaging, labels, paper, and plastic film, and has a broad application prospect.

[0003] Since ink is needed in the flexible process, the ink needs to be UV cured after being printed on the material. During UV curing, the UV lamp irradiates the printing material, causing the temperature of the printing material to rise and causing burns to the printing material. UTILITY MODEL CONTENT

[0004] To solve the above problems, the utility model provides an intermittent flexographic mechanism with a water cooling structure, which can cool the printing material during UV curing and avoid burns to the printing material.

[0005] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0006] The utility model provides a intermittent flexographic mechanism with water cooling structure, include:

[0007] A traction module for pulling the printing material;

[0008] A swing roller module for intermittent backoff of the printing material;

[0009] An intermittent flexographic module for printing;

[0010] A UV curing module for ink curing;

[0011] A water cooling module for cooling the printing material during ink curing;

[0012] A rack, the traction module, swing module, intermittent flexographic module, UV curing module, water cooling module are all arranged on the rack, the water cooling module is opposite with UV curing module arrangement;

[0013] The intermittent flexographic mechanism is also provided with an intermittent flexographic path, which sequentially passes through the traction module, swing roller module, intermittent flexographic module, water cooling module, and swing roller module.

[0014] Further, the water cooling module comprises a cold water roller, a water inlet pipeline, a water outlet pipeline and a rotary joint, the cold water roller is fixed to the rack, the UV curing module is arranged relative to the cold water roller, the intermittent flexographic printing path passes through between the UV curing module and the cold water roller, and the printing material is attached to the roller surface of the cold water roller; the cold water roller is provided with a cold water cavity, one end of the water inlet pipeline and the water outlet pipeline extends into the cold water roller and communicates with the cold water cavity; the rotary joint is provided with a water inlet end and a water outlet end, one end of the water inlet pipeline away from the cold water cavity is connected with the water inlet end, one end of the water outlet pipeline away from the cold water cavity is connected with the water outlet end, and the rotary joint is rotationally connected with the water inlet pipeline and the water outlet pipeline.

[0015] Further, the water inlet pipeline is arranged in the water outlet pipeline, and the inner diameter of the water outlet pipeline is greater than the outer diameter of the water inlet pipeline. This sleeve type structure can not only save the occupied space of the pipeline, but also facilitate the water flow to enter the cold water cavity from the gap between the water outlet pipeline and the water inlet pipeline.

[0016] Further, the cold water roller is provided with an inner tube, one end of the inner tube is provided with a first plug, and the other end is provided with a second plug, the first plug and the second plug separate the cold water cavity into a first cavity, a second cavity and a third cavity which are sequentially communicated, and the inner tube is located in the second cavity; the water outlet pipeline comprises a first pipe body, a second pipe body and a third pipe body, the first pipe body, the second pipe body and the third pipe body are sequentially communicated, the first pipe body is arranged in the first cavity, the second pipe body is located in the inner tube, the third pipe body is located in the third cavity, the first pipe body is connected with the water outlet end, and one end of the water inlet pipeline extending into the cold water roller communicates with the third pipe body; the side wall of the first pipe body and the third pipe body is provided with a through hole, so that the first pipe body communicates with the first cavity, and the third pipe body communicates with the third cavity.

[0017] Further, the first plug and the second plug are both provided with a relief hole, and the water inlet pipeline penetrates the relief hole.

[0018] Further, one end of the first pipe body and the water inlet pipeline extends out of the cold water roller, the rotary joint further comprises a butt joint pipe, the water inlet end and the water outlet end are arranged at one end of the butt joint pipe, one end of the water inlet pipeline away from the cold water roller extends into the butt joint pipe and communicates with the water inlet end; one end of the first pipe body away from the cold water roller is sleeved outside the butt joint pipe and communicates with the water outlet end; and the butt joint pipe is rotationally connected with the inner wall of the first pipe body.

[0019] Further, the rotary joint further comprises a rotary connection end, the rotary connection end is sleeved on the outer wall of the first pipe body, and a bearing is arranged between the rotary connection end and the first pipe body.

[0020] Further, the water cooling module further comprises a water cooling driving motor, a water cooling speed reducer, and a water cooling coupling, the output end of the water cooling driving motor is connected with the water cooling speed reducer, the output end of the water cooling speed reducer is connected with the water cooling coupling, and the water cooling coupling is fixedly connected with the cold water roller at the end away from the water cooling speed reducer.

[0021] Further, the traction module comprises a traction roller and a traction driving motor, and the traction roller is connected to the output end of the traction driving motor.

[0022] Further, the swing roller module comprises a swing roller, a swing roller motor, a driving shaft, a driven shaft, and a transmission belt, the swing roller motor and the driven shaft are fixed to the frame, the driving shaft is connected to the output end of the swing roller motor, the driving shaft and the driven shaft are connected through the transmission belt, and the swing roller is installed on the transmission belt.

[0023] Further, a guide roller is arranged between the traction roller and the swing roller to guide the printing material.

[0024] Further, the intermittent flexographic printing module comprises a mounting frame, a plate roller, a plate roller driving motor, a plate roller transmission assembly, a bottom roller, a bottom roller driving motor, a bottom roller transmission assembly, an ink scraping knife, an ink tray, an ink transfer roller, and an anilox roller, the mounting frame is fixed to the frame, the plate roller, the plate roller driving motor, the bottom roller, the bottom roller driving motor, the ink scraping knife, the ink tray, the ink transfer roller, and the anilox roller are all fixed to the mounting frame, the plate roller is connected with the plate roller driving motor through the plate roller transmission assembly, and the plate roller, the anilox roller, and the ink transfer roller are sequentially connected in transmission, the ink transfer roller is arranged above the ink tray, the ink scraping knife is arranged at the side of the ink transfer roller, the bottom roller is connected with the bottom roller driving motor through the bottom roller transmission assembly, the plate roller is arranged above the bottom roller, the intermittent flexographic printing path passes between the plate roller and the bottom roller, and the printing material is attached to the roller surface of the bottom roller.

[0025] Further, the bottom roller transmission assembly comprises a bottom roller driving gear, a bottom roller transmission gear, and a bottom roller driven gear, the bottom roller driving gear is connected to the output end of the bottom roller driving motor, the bottom roller driven gear is coaxially fixedly connected with the bottom roller, and the bottom roller driving gear and the bottom roller driven gear are connected in transmission through the bottom roller transmission gear. The bottom roller driving motor drives the bottom roller to rotate in sequence through the bottom roller driving gear, the bottom roller transmission gear, and the bottom roller driven gear.

[0026] Further, the plate roller transmission assembly comprises a plate roller transmission shaft, a plate roller transmission gear and a plate roller driven gear, the plate roller transmission shaft is arranged in the bottom roller and rotationally connected with the bottom roller, and the plate roller transmission shaft is connected with the output end of the plate roller driving motor; the plate roller transmission gear is fixedly arranged on the plate roller transmission shaft, the plate roller transmission gear is in transmission connection with the plate roller driven gear, and the plate roller driven gear is coaxially fixedly connected with the plate roller.

[0027] Further, the plate roller, the anilox roller and the ink transfer roller are provided with intermediate transmission wheels, so that the plate roller can drive the anilox roller and the ink transfer roller to rotate synchronously. When the ink transfer roller rotates, the ink in the ink tray is conducted to the anilox roller, and then conducted to the plate roller by the anilox roller, so that the ink is printed on the printing material by the plate roller; the doctor blade can scrape the ink on the ink transfer roller evenly.

[0028] Further, the intermittent flexographic printing module further comprises a pressure adjusting structure, the pressure adjusting structure comprises a fixed shaft, a first pressure adjusting movable block and a second pressure adjusting movable block, the fixed shaft is fixed on the mounting frame, the first pressure adjusting movable block is arranged between the plate roller and the bottom roller, and the second pressure adjusting movable block is arranged between the plate roller and the anilox roller; the first pressure adjusting movable block and the second pressure adjusting movable block are fixedly connected with the fixed shaft and can move relative to the fixed shaft; the first pressure adjusting movable block and the second pressure adjusting movable block are combined to form a bearing groove, the plate roller is located in the bearing groove, and the roller surfaces on both sides of the plate roller abut against the upper wall surfaces of the first pressure adjusting movable block and the second pressure adjusting movable block respectively.

[0029] Compared with the prior art, the water cooling module is arranged, when the printing material is subjected to UV curing of ink, the water cooling module can cool the material, so that the UV curing module avoids scalding the printing material. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is the front view of the intermittent flexographic printing mechanism.

[0031] Figure 2 is the axonometric view of the intermittent flexographic printing mechanism.

[0032] Figure 3 is the structural schematic view of the swing roller module.

[0033] Figure 4 is the structural schematic view of the water cooling module.

[0034] Figure 5 is the explosion view of the water cooling module.

[0035] Figure 6 is the sectional view of the component structure of the water cooling module.

[0036] Figure 7 is Figure 6A local enlarged view at A-A.

[0037] Figure 8 is the first perspective view of the intermittent flexo printing module.

[0038] Figure 9 is the second perspective view of the intermittent flexo printing module.

[0039] Figure 10 is a structural schematic view of the pressure regulating structure.

[0040] In the figure: 1, traction module; 11, traction roller; 12, traction drive motor; 2, swing roller module; 21, swing roller; 22, swing roller motor; 23, driving shaft; 24, driven shaft; 25, transmission belt; 3, intermittent flexo printing module; 31, mounting frame; 32, plate roller; 33, plate roller drive motor; 34, plate roller transmission assembly; 341, plate roller transmission shaft; 342, plate roller transmission gear; 343, plate roller driven gear; 35, bottom roller; 36, bottom roller drive motor; 37, bottom roller transmission assembly; 371, bottom roller driving gear; 372, bottom roller transmission gear; 373, bottom roller driven gear; 38, doctor blade; 39, ink pan; 310, ink transfer roller; 320, anilox roller; 330, intermediate transmission wheel; 340, pressure regulating structure; 3401, fixed shaft; 3402, first pressure regulating movable block; 3403, second pressure regulating movable block; 3404, bearing groove; 4, UV curing module; 5, water cooling module; 51, cold water roller; 52, water inlet pipeline; 53, water outlet pipeline; 531, first pipe body; 532, second pipe body; 533, third pipe body; 534, through hole; 54, rotary joint; 541, water inlet end; 542, water outlet end; 543, butt joint pipe; 544, rotary connection end; 55, cold water cavity; 551, first cavity; 552, second cavity; 553, third cavity; 56, inner pipe; 57, first plug; 58, second plug; 59, avoiding hole; 510, water cooling drive motor; 520, water cooling speed reducer; 530, water cooling shaft coupling; 6, rack; 7, intermittent flexo printing path; 8, guide roller. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail by combining with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0042] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0043] Referring to Figures 1-10 The embodiment provides an intermittent flexo printing mechanism with a water cooling structure, which comprises:

[0044] a traction module 1 for traction of the printing material;

[0045] a swing roller module 2 for intermittent back-off of the printing material;

[0046] an intermittent flexographic printing module 3 for printing;

[0047] a UV curing module 4 for ink curing;

[0048] a water cooling module 5 for cooling the printing material during ink curing;

[0049] a rack 6, the traction module 1, the swing module, the intermittent flexographic printing module 3, the UV curing module 4, and the water cooling module 5 are all arranged on the rack 6, and the water cooling module 5 is arranged opposite to the UV curing module 4;

[0050] The intermittent flexographic printing mechanism is further provided with an intermittent flexographic printing path 7, and the intermittent flexographic printing path 7 sequentially passes through the traction module 1, the swing roller module 2, the intermittent flexographic printing module 3, the water cooling module 5, and the swing roller module 2.

[0051] In this embodiment, when the printing ink is subjected to UV curing, the material can be cooled by the water cooling module 5, so as to avoid scalding of the printing material by the UV curing module 4.

[0052] It should be noted that the UV curing module in this embodiment is a prior art, and its specific structure is not described in detail in this embodiment.

[0053] Further, the water cooling module 5 comprises a cold water roller 51, a water inlet pipe 52, a water outlet pipe 53, and a rotary joint 54. The cold water roller 51 is fixed to the rack 6, and the UV curing module 4 is arranged relative to the cold water roller 51. The intermittent flexographic printing path 7 passes through between the UV curing module 4 and the cold water roller 51, and the printing material is attached to the roller surface of the cold water roller 51. The cold water roller 51 is provided with a cold water cavity 55. One end of the water inlet pipe 52 and the water outlet pipe 53 extends into the cold water roller 51 and communicates with the cold water cavity 55. The rotary joint 54 is provided with a water inlet end 541 and a water outlet end 542. One end of the water inlet pipe 52 away from the cold water cavity 55 is connected to the water inlet end 541. One end of the water outlet pipe 53 away from the cold water cavity 55 is connected to the water outlet end 542. The rotary joint 54 is rotationally connected to the water inlet pipe 52 and the water outlet pipe 53. In this embodiment, the rotary joint 54 can be externally connected to a water cooler. The water cooler can guide the cold water at about 20 degrees from the water inlet end 541 of the rotary joint 54 into the cold water cavity 55 through the water inlet pipe 52 to cool the entire roller surface of the cold water roller 51. When the UV curing module 4 cures the printing material, the cold water roller 51 can cool the printing material attached to the roller surface, thereby avoiding the printing material from being scalded. The water inlet pipe 52 and the water outlet pipe 53 are fixed to the cold water roller 51. The rotary joint 54 can rotate relative to the water inlet pipe 52 and the water outlet pipe 53 and does not rotate synchronously with the cold water roller 51, thereby avoiding mutual interference between the rotary joint 54 and the water inlet pipe 52 and the water outlet pipe 53.

[0054] Further, the water inlet pipe 52 is arranged in the water outlet pipe 53, and the inner diameter of the water outlet pipe 53 is greater than the outer diameter of the water inlet pipe 52. This sleeve type structure can not only save the occupied space of the pipes, but also facilitate the water flow to enter the cold water cavity 55 from the gap between the water outlet pipe 53 and the water inlet pipe 52.

[0055] Further, the cold water roller 51 is provided with an inner tube 56. One end of the inner tube 56 is provided with a first plug 57, and the other end is provided with a second plug 58. The first plug 57 and the second plug 58 divide the cold water cavity 55 into a first cavity 551, a second cavity 552, and a third cavity 553 which are sequentially communicated. The inner tube 56 is located in the second cavity 552. The water outlet pipe 53 comprises a first pipe body 531, a second pipe body 532, and a third pipe body 533. The first pipe body 531, the second pipe body 532, and the third pipe body 533 are sequentially communicated. The first pipe body 531 is arranged in the first cavity 551. The second pipe body 532 is located in the inner tube 56. The third pipe body 533 is located in the third cavity 553. The first pipe body 531 is connected to the water outlet end 542. One end of the water inlet pipe 52 extending into the cold water roller 51 communicates with the third pipe body 533. The side walls of the first pipe body 531 and the third pipe body 533 are both provided with through holes 534, so that the first pipe body 531 communicates with the first cavity 551, and the third pipe body 533 communicates with the third cavity 553.

[0056] In this embodiment, after cold water enters the inlet pipe 52, it passes through the third pipe 533 and enters the third cavity 553, thus filling the entire cold water cavity 55. The water then exchanges heat with the printing material through the roller surface of the cold water roller 51. After heat exchange, the water flows from the first cavity 551 into the first pipe 531, and then returns to the chiller from the outlet end 542 of the rotary joint 54. This achieves a continuous circulation of cooling water between the cold water roller 51 and the chiller, continuously cooling the printing material. This structural design allows for the rapid introduction of cooling water into the cold water cavity 55 and rapid water return, resulting in rapid cooling of the printing material. Furthermore, this design allows for a reasonable layout of the inlet pipe 52 and outlet pipe 53 within the cold water roller 51, ensuring stable operation of the cold water roller 51 while simplifying the structure.

[0057] Furthermore, both the first plug 57 and the second plug 58 are provided with clearance holes 59, through which the water inlet pipe 52 passes.

[0058] Furthermore, one end of the first pipe body 531 and the water inlet pipe 52 extends out of the cold water roller 51. The rotary joint 54 also includes a connecting pipe 543. The water inlet end 541 and the water outlet end 542 are both located at one end of the connecting pipe 543. The end of the water inlet pipe 52 away from the cold water roller 51 extends into the connecting pipe 543 and communicates with the water inlet end 541. The end of the first pipe body 531 away from the cold water roller 51 is sleeved on the connecting pipe 543 and communicates with the water outlet end 542. The connecting pipe 543 is rotatably connected to the inner wall of the first pipe body 531.

[0059] Furthermore, the rotary joint 54 also includes a rotary connection end 544, which is sleeved on the outer wall of the first tube body 531, and a bearing is provided between the rotary connection end 544 and the first tube body 531.

[0060] Furthermore, the water-cooled module 5 also includes a water-cooled drive motor 510, a water-cooled reducer 520, and a water-cooled coupling 530. The output end of the water-cooled drive motor 510 is connected to the water-cooled reducer 520, and the output end of the water-cooled reducer 520 is connected to the water-cooled coupling 530. The end of the water-cooled coupling 530 away from the water-cooled reducer 520 is fixedly connected to the cooling water roller 51, and the water-cooled reducer 520 is connected to the cooling water roller 51 through a third tube 533. In this embodiment, the third tube 533 is essentially the output shaft of the water-cooled reducer 520. By slotting and opening one end of the output shaft, the function of the third tube 533 in transmitting cooling water is realized.

[0061] Furthermore, the traction module 1 includes a traction roller 11 and a traction drive motor 12, with the traction roller 11 connected to the output end of the traction drive motor 12.

[0062] Further, the swing roller module 2 comprises a swing roller 21, a swing roller motor 22, a driving shaft 23, a driven shaft 24, a transmission belt 25, the swing roller motor 22 and the driven shaft 24 are fixed on the rack 6, the driving shaft 23 is connected to the output end of the swing roller motor 22, the driving shaft 23 and the driven shaft 24 are connected through the transmission belt 25, and the swing roller 21 is installed on the transmission belt 25. In this embodiment, gears are arranged on the driving shaft 23 and the driven shaft 24, and the two ends of the transmission belt 25 are sleeved on the gears and rotate with the gears. When the swing roller motor 22 works, the transmission belt 25 can be driven to rotate through the gears, and then the swing roller 21 is controlled to swing, so that the intermittent back-off of the printing material is realized, and then the intermittent printing is realized.

[0063] Further, the traction roller 11 and the swing roller 21 are further provided with a guide roller 8 to guide the printing material.

[0064] Further, the intermittent flexographic printing module 3 comprises a mounting frame 31, a plate roller 32, a plate roller driving motor 33, a plate roller transmission assembly 34, a bottom roller 35, a bottom roller driving motor 36, a bottom roller transmission assembly 37, an ink scraper 38, an ink tray 39, a ink transfer roller 310, and a anilox roller 320. The mounting frame 31 is fixed on the rack 6, and the plate roller 32, the plate roller driving motor 33, the bottom roller 35, the bottom roller driving motor 36, the ink scraper 38, the ink tray 39, the ink transfer roller 310, and the anilox roller 320 are all fixed on the mounting frame 31. The plate roller 32 is connected with the plate roller driving motor 33 through the plate roller transmission assembly 34, and the plate roller 32, the anilox roller 320, and the ink transfer roller 310 are sequentially transmissionally connected through gears. The ink transfer roller 310 is arranged above the ink tray 39, and the ink scraper 38 is arranged at the side of the ink transfer roller 310. The bottom roller 35 is connected with the bottom roller driving motor 36 through the bottom roller transmission assembly 37, the plate roller 32 is arranged above the bottom roller 35, and the printing material is attached to the surface of the bottom roller 35 when the machine is printing, and is arranged between the plate roller 32 and the bottom roller 35.

[0065] The existing intermittent flexographic printing module 3, the bottom roller 35 is a driven roller, which is driven to roll by the printing material. When intermittent printing, the material will drive the driven roller to back off. Since the bottom roller 35 is a driven back-off, it is difficult to align the sleeve position, and there is a sleeve position difference, which has the disadvantages of small precision. In addition, when the printing material is thin, the printing material will also have the risk of being pulled off when pulling the bottom roller 35.

[0066] In this embodiment, compared with the existing intermittent flexographic printing module 3, the bottom roller 35 is powered by the bottom roller driving motor 36, which changes from a driven roller to a driving roller, which can drive the printing material to advance and retreat, realize intermittent printing, and has more accurate sleeve position and higher precision. At the same time, it can also avoid the printing material from bearing a large pulling force when back-off, thereby reducing the risk of the printing material being pulled off.

[0067] Further, the bottom roller driving assembly 37 comprises a bottom roller driving gear 371, a bottom roller transmission gear 372 and a bottom roller driven gear 373. The bottom roller driving gear 371 is connected to the output end of the bottom roller driving motor 36. The bottom roller driven gear 373 is coaxially fixedly connected with the bottom roller 35. The bottom roller driving gear 371 is drivingly connected with the bottom roller driven gear 373 through the bottom roller transmission gear 372. The bottom roller driving motor 36 drives the bottom roller 35 to rotate through the bottom roller driving gear 371, the bottom roller transmission gear 372 and the bottom roller driven gear 373 in sequence.

[0068] Further, the plate roller driving assembly 34 comprises a plate roller transmission shaft 341, a plate roller transmission gear 342 and a plate roller driven gear 343. The plate roller transmission shaft 341 is arranged in the bottom roller 35 and is drivingly connected with the bottom roller 35. The plate roller transmission shaft 341 is connected to the output end of the plate roller driving motor 33. The plate roller transmission gear 342 is fixedly sleeved on the plate roller transmission shaft 341. The plate roller transmission gear 342 is drivingly connected with the plate roller driven gear 343. The plate roller driven gear 343 is coaxially fixedly connected with the plate roller 32. In the embodiment, the plate roller driving motor 33 drives the plate roller 32 to rotate through the plate roller transmission shaft 341, the plate roller transmission gear 342 and the plate roller driven gear 343 in sequence. Since the plate roller 32 is located above the bottom roller 35 and protrudes from the mounting frame 31, and the plate roller driving motor 33 is fixed on the mounting frame 31, the plate roller transmission shaft 341 must be located below the plate roller. In the embodiment, the plate roller transmission shaft 341 is arranged in the bottom roller 35, so that the plate roller transmission shaft 341 can be used to position the bottom roller 35, and the space occupied by the plate roller transmission shaft 341 can be saved, so that the structure of the whole device is more reasonable and compact, and the volume of the device is reduced.

[0069] Further, the plate roller 32, the anilox roller 320 and the ink roller 310 are provided with an intermediate transmission wheel 330, so that the plate roller 32 can drive the anilox roller 320 and the ink roller 310 to rotate synchronously. When the ink roller 310 rotates, the ink in the ink tray 39 is conducted to the anilox roller 320, and then conducted to the plate roller 32 by the anilox roller 320. The plate roller 32 can press the ink onto the printing material. The doctor blade 38 can scrape the ink on the ink roller 310 evenly.

[0070] Further, the intermittent flexographic printing module 3 further comprises a pressure adjusting structure 340, the pressure adjusting structure 340 comprises a fixed shaft 3401, a first pressure adjusting movable block 3402 and a second pressure adjusting movable block 3403, the fixed shaft 3401 is fixed on the mounting frame 31, the first pressure adjusting movable block 3402 is arranged between the plate roller 32 and the bottom roller 35, and the second pressure adjusting movable block 3403 is arranged between the plate roller 32 and the anilox roller 320; the first pressure adjusting movable block 3402 and the second pressure adjusting movable block 3403 are fixedly connected with the fixed shaft 3401 and can rotate relative to the fixed shaft 3401; the first pressure adjusting movable block 3402 and the second pressure adjusting movable block 3403 are combined to form a bearing groove 3404, the plate roller 32 is located in the bearing groove 3404, and the roller surfaces on both sides of the plate roller 32 abut against the upper wall surfaces of the first pressure adjusting movable block 3402 and the second pressure adjusting movable block 3403 respectively. In the embodiment, the first pressure adjusting movable block 3402 and the second pressure adjusting movable block 3403 can bear the plate roller 32, so that the plate roller 32 has a certain spacing with the bottom roller 35 and the anilox roller 320, the first pressure adjusting movable block 3402 and the second pressure adjusting movable block 3403 can rotate relative to the fixed shaft 3401 to adjust the spacing size, and further adjust the pressure between the plate roller 32 and the bottom roller 35 and the anilox roller 320.

[0071] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An intermittent flexographic printing mechanism having a water cooling structure, characterized by, The utility model relates to a printing machine, including: a traction module for traction of the printing material; a swing roller module for intermittent back of the printing material; an intermittent flexographic printing module for printing; a UV curing module for ink curing; a water cooling module for cooling the printing material when the ink is cured; a rack, the traction module, swing module, intermittent flexographic printing module, UV curing module, water cooling module are all arranged on the rack, and the water cooling module is opposite to the UV curing module; The intermittent flexographic printing mechanism is further provided with an intermittent flexographic printing path, and the intermittent flexographic printing path sequentially passes through the traction module, swing roller module, intermittent flexographic printing module, water cooling module, swing roller module.

2. The intermittent flexographic printing mechanism with water cooling structure according to claim 1, characterized in that, The water cooling module includes a cold water roller, a water inlet pipeline, a water outlet pipeline and a rotary joint, the cold water roller is fixed on the rack, the UV curing module is arranged relative to the cold water roller, the intermittent flexographic printing path passes through between the UV curing module and the cold water roller, and the printing material is attached to the roller surface of the cold water roller; The cold water roller is provided with a cold water cavity, one end of the water inlet pipeline and the water outlet pipeline extends into the cold water roller and communicates with the cold water cavity; The rotary joint is provided with a water inlet end and a water outlet end, one end of the water inlet pipeline away from the cold water cavity is connected with the water inlet end, and one end of the water outlet pipeline away from the cold water cavity is connected with the water outlet end, and the rotary joint is rotatably connected with the water inlet pipeline and the water outlet pipeline.

3. The intermittent flexographic printing mechanism with water cooling structure according to claim 2, characterized in that, The water inlet pipeline is arranged in the water outlet pipeline, and the inner diameter of the water outlet pipeline is greater than the outer diameter of the water inlet pipeline.

4. The intermittent flexographic printing mechanism having a water cooling structure according to claim 2, characterized in that, The cold water roller is provided with an inner tube, one end of the inner tube is provided with a first plug, and the other end is provided with a second plug, the first plug and the second plug separate the cold water cavity into a first cavity, a second cavity and a third cavity in sequence, and the inner tube is located in the second cavity; The water outlet pipeline includes a first tube body, a second tube body and a third tube body, the first tube body, the second tube body and the third tube body are sequentially communicated, the first tube body is arranged in the first cavity, the second tube body is located in the inner tube, and the third tube body is located in the third cavity, the first tube body is connected with the water outlet end, and one end of the water inlet pipeline extending into the cold water roller is communicated with the third tube body; The side wall of the first tube body and the third tube body is provided with a through hole, so that the first tube body is communicated with the first cavity, and the third tube body is communicated with the third cavity.

5. The intermittent flexographic printing mechanism having a water cooling structure according to claim 4, characterized in that, The first plug and the second plug are provided with a avoiding hole, and the water inlet pipeline penetrates the avoiding hole.

6. The intermittent flexographic printing mechanism having a water cooling structure according to claim 4, characterized in that, One end of the first tube body and the water inlet pipeline extends out of the cold water roller, the rotary joint further includes a butt joint pipe, the water inlet end and the water outlet end are arranged at one end of the butt joint pipe, one end of the water inlet pipeline away from the cold water roller extends into the butt joint pipe and is communicated with the water inlet end; One end of the first tube body away from the cold water roller is sleeved outside the butt joint pipe and is communicated with the water outlet end; And the butt joint pipe and the inner wall of the first tube body are rotatably connected.

7. An intermittent flexographic printing mechanism having a water cooling structure according to any one of claims 4-6, characterized in that, The rotary joint further includes a rotary connection end, the rotary connection end is sleeved on the outer wall of the first tube body, and a bearing is arranged between the rotary connection end and the first tube body.

8. The intermittent flexographic printing mechanism having a water cooling structure according to claim 3, characterized in that, The water cooling module further comprises a water cooling driving motor, a water cooling speed reducer, and a water cooling coupling, the output end of the water cooling driving motor is connected with the water cooling speed reducer, the output end connected with the water cooling speed reducer is connected with the water cooling coupling, and one end of the water cooling coupling away from the water cooling speed reducer is fixedly connected with the cold water roller.

9. The intermittent flexographic printing mechanism having a water cooling structure according to claim 1, characterized in that, The traction module comprises a traction roller and a traction driving motor, and the traction roller is connected to the output end of the traction driving motor.

10. The intermittent flexographic printing mechanism having a water cooling structure according to claim 1, characterized in that, The swing roller module comprises a swing roller, a swing roller motor, a driving shaft, a driven shaft, and a transmission belt, the swing roller motor and the driven shaft are fixed to the frame, the driving shaft is connected to the output end of the swing roller motor, the driving shaft and the driven shaft are connected through the transmission belt, and the swing roller is installed on the transmission belt.

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