CN212353268U

CN212353268U - Printing plate cleaning machine

Info

Publication number: CN212353268U
Application number: CN202020937956.5U
Authority: CN
Inventors: 刘聪
Original assignee: Hubei University of Science and Technology
Current assignee: Hubei Gaofeng Printing Co ltd
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2021-01-15
Anticipated expiration: 2030-05-28

Abstract

The utility model provides a printing plate cleaning machine belongs to lithography apparatus technical field. The cleaning device comprises a cleaning box with an opening at the upper end, wherein a plurality of cleaning units are arranged in the cleaning box, each cleaning unit comprises a separation groove arranged at the bottom of the cleaning box, a rotating shaft rotationally connected to the cleaning box and two clamping discs fixed on the rotating shaft, the two clamping discs are connected through a cylindrical connecting block, the connecting block is positioned at the eccentric position of each clamping disc, each clamping disc is positioned in the separation groove, an inserting groove for limiting a printing plate is formed between the two clamping discs, a plurality of brush blocks are uniformly distributed on the inner side surface of each clamping disc, each clamping groove comprises a partition plate which is longitudinally arranged at the bottom of the cleaning box and is parallel to the axis of the rotating shaft, each separation groove consists of the partition plates of two adjacent cleaning units, cleaning liquid is; the rotating shaft is connected with a stepping motor. The utility model has the advantages of can improve the efficiency of washhing to the galley.

Description

Printing plate cleaning machine

Technical Field

The utility model belongs to the technical field of lithography apparatus, a printing plate cleaning machine is related to.

Background

The printing plate is a vehicle for transferring ink to the printed image on the substrate. Can be divided into four categories: relief printing plate, the image-text part of the printing plate is higher than the blank part; the intaglio plate has image-text part lower than the blank part; the image-text part and the blank part of the printing plate are basically on the same plane, and the printing plate has the characteristics that the printing part is oleophilic and the blank part is hydrophilic; the porous plate and the printing plate are made of holes or meshes with different sizes or the same number. According to the lithographic plate making method, the method can be divided into: the protein plate is specially used for negative plate making, and takes a zinc plate as a plate base and takes ammonium dichromate and protein (mainly poultry eggs) as photosensitive films; polyvinyl alcohol flat gravure plate, which is specially used for positive plate making, and takes zinc plate or aluminum plate as plate base, ammonium bicomplex and polyvinyl alcohol as photosensitive film; the multi-layer metal flat-plate intaglio uses oleophylic copper as the basis of picture and text part, hydrophilic chromium or nickel as the basis of blank part, copper plate or aluminium plate as the plate base, and after coppering, the chromium or nickel plate is plated, and then the printing plate is made up by positive plate-making method.

The printing plate can accumulate some printing ink on it after long-time use, leads to the printing to be clear inadequately, needs to wash the printing plate this moment, and current mode all is manual cleaning, not only destroys the picture and text of printing plate easily, but also has the washing thoroughly, the inefficiency scheduling problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a printing plate cleaning machine to the above-mentioned problem that prior art exists, the utility model aims to solve the technical problem how accomplish simultaneously washing to two sides of printing plate in narrow and small space.

The purpose of the utility model can be realized by the following technical proposal: a printing plate cleaning machine is characterized by comprising a cleaning box with an opening at the upper end, wherein a plurality of cleaning units are arranged in the cleaning box, each cleaning unit comprises a separation groove arranged at the bottom of the cleaning box, a rotating shaft rotationally connected to the cleaning box and two clamping discs fixed on the rotating shaft, the two clamping discs are connected through a cylindrical connecting block, the connecting block is positioned at the eccentric position of each clamping disc, each clamping disc is positioned in the separation groove, an inserting groove for limiting a printing plate is formed between the two clamping discs, a plurality of brush blocks are uniformly distributed on the inner side surface of each clamping disc, the separation groove comprises a partition plate longitudinally arranged at the bottom of the cleaning box and parallel to the axis of the rotating shaft, the separation groove is formed by the partition plates of two adjacent cleaning units, cleaning liquid is filled in the cleaning box, and the width of the separation groove is larger; the rotating shaft is connected with a stepping motor.

The width of separating the groove is the interval between two baffles, the stereoplasm printing plate or the flexographic printing plate that are the rectangle are spacing in the slot, under the rotation of pivot, the brush piece scours the both sides face of printing plate respectively, and when the connecting block was located the position of being close to one of them baffle, it is more to be close to the brush piece of another baffle direction, the frictional resistance to the printing plate is bigger, make the printing plate move to the direction that is close to the brush piece, otherwise, the printing plate then moves to the opposite side, so relapse, can make the printing plate be in the state that longitudinal position, horizontal position all are constantly changed, the in-process that is promoted also is along with the relative motion with the brush piece, in order to wash the printing plate, cleaning efficiency is higher.

In the printing plate cleaning machine, the cleaning box is internally provided with a plate-entering guide groove which can correspond to the slot.

The plate-entering guide groove is composed of two guide plates, and the distance between the upper ends of the two guide plates is larger than that between the lower ends of the two guide plates.

In the printing plate cleaning machine, a sleeve is fixedly connected to an output shaft of the stepping motor, one end of the rotating shaft is inserted into the sleeve, the rotating shaft is connected with the sleeve through a spline, the other end of the rotating shaft is connected with a linear motor, the output shaft of the linear motor is rotatably connected with the rotating shaft, a publishing mechanism common to all cleaning units is further arranged in the cleaning box, the publishing mechanism comprises two groups of conveying belts, each conveying belt comprises two rotating rollers and a belt, one end of one rotating roller is connected with a synchronous gear, one rotating roller is connected with a speed reducing motor, and the synchronous gears of the two conveying belts are meshed with each other; the outer side surface of the belt is adhered with water absorption cloth, and a publishing channel is formed between the two belts.

After the printing plate is cleaned, the clamping plate clamps the printing plate, the rotating shaft moves in the separation groove under the action of the linear motor and moves to the position below the publishing channel, the rotating shaft continues to rotate slowly, when the connecting block is positioned at a high position, the printing plate can also be lifted to the highest position, namely, the conveying belt can clamp the printing plate to enter the position in the publishing channel, and the two groups of conveying belts rotate reversely, so that the printing plate moves from bottom to top in the publishing channel until the printing plate extends out of the top of the cleaning box.

In the printing plate cleaning machine, each group of conveying belts is provided with the scraper which is fixed on the cleaning box and is abutted against the straight section of the belt far away from the publishing channel.

And in the process of continuously rotating the conveyor belt, the scraper can scrape water on the water absorption cloth on the outer wall surface of the conveyor belt, and the water absorption cloth on the conveyor belt is kept in a dehydration state, so that the dehydration cloth can absorb water on the printing plate which moves upwards, and the cleaned printing plate is dehydrated and dried.

In the printing plate cleaning machine, each group of conveying belts is provided with a heater, the heater is positioned on the inner side of the belt, and the heater is fixed on the cleaning box.

The straight section of the belt can be relatively dried by the heater, the belt which enters the clamping printing plate is relatively dried, the printing plate is continuously output under the circulation, and the dewatering cloth is continuously dewatered and dried.

In the printing plate cleaning machine, each sleeve is fixedly provided with a belt wheel, the belt wheel of each cleaning unit is pulled by a toothed belt, and an output shaft of the stepping motor is connected with one sleeve.

In foretell printing plate cleaning machine, the fixed valve body that is provided with on linear electric motor's the output shaft, the fixed impeller that is located the valve body that is provided with in the pivot, rotate between pivot and the valve body and be connected, set up the limbers that feeds through the valve body and wash the case inner chamber in the pivot, connect an inlet tube and a outlet pipe on the valve body, be provided with a check valve on inlet tube and the outlet pipe respectively.

Advance a water piping connection clear water tank, go out a water piping connection sewage tank, the water entering valve body in the check valve restriction sewage tank on the outlet pipe, the check valve restriction clear water on the inlet tube gets into the clear water tank by the valve body, through the forward rotation and the counter-rotation of pivot, make the water that the impeller can drive washing incasement get into the water entering washing case in sewage tank or the clear water tank respectively to the change of washing incasement water is realized.

In the printing plate cleaning machine, the partition plate is provided with the through holes for communicating water between the adjacent partition grooves.

The axes of the through holes are vertical to the chuck plate, when water flows are communicated between the adjacent separation grooves, the water flows in the axes of the through holes are larger, the printing plates can be washed in the direction parallel to the printing plates, the uniformity of water in the washing tank can also be improved, and the water quality meeting the requirement of the cleanliness in the washing tank can be maintained by continuously changing water.

In the printing plate cleaning machine, the outer side surface of the chuck is provided with a stirring wheel.

The stirring wheel can stir the water of wasing the incasement at the rotatory in-process of (holding) chuck to improve the flow frequency of water and to the impact force of galley, improve cleaning performance and efficiency.

The whole process can be briefly summarized as follows: the pivot is under step motor's effect intermittent type nature switching rotation direction, at this moment, the (holding) chuck is located the below of income version guide way, the printing plate that will treat the washing inserts from going into the version guide way, the printing plate hangs the stove in separating groove 31, step motor's rotation makes the printing plate be washed by the washing liquid that the horizontal plane is in the belt below, then linear electric motor drive pivot removes, make the (holding) chuck be located the below of publishing passageway, the rotation of (holding) chuck, can send the printing plate into the position that the belt can contact, the volume group conveyer belt sends out the printing plate and washs the case, in this process, the impeller is rotatory, can be in the continuous switching process of the forward of impeller and reverse rotation, constantly exchange water in the water tank with external water, in order to update the washing liquid in wasing the case, accomplish the dehydration and the drying of printing plate in the.

Drawings

Fig. 1 is a schematic structural view of the cleaning machine in a cleaning state.

Fig. 2 is a sectional view taken along a-a in fig. 1.

Fig. 3 is a sectional view taken along the direction B-B in fig. 1.

Fig. 4 is a cross-sectional view in the direction C-C in fig. 1.

Fig. 5 is a schematic view of the structure of the washing machine in a published state.

Fig. 6 is a cross-sectional view in the direction D-D of fig. 5.

Fig. 7 is a partial perspective view of the belt.

In the figure, 11, a cleaning tank; 12. printing plates; 13. a rotating shaft; 14. a stepping motor; 15. A pulley; 16. a toothed belt; 21. a chuck; 22. connecting blocks; 23. a slot; 24. brushing blocks; 25. a stirring wheel; 31. separating the grooves; 32. a partition plate; 33. an inter-via; 41. entering a plate guide groove; 42. a sleeve; 43. a linear motor; 44. a valve body; 45. an impeller; 46. a water through hole; 47. a water inlet pipe; 48. a water outlet pipe; 51. rotating the roller; 52. a belt; 53. a synchronizing gear; 54. a reduction motor; 55. water-absorbing cloth; 56. a publishing channel; 57. a squeegee; 58. a heater.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2, 3 and 4, the cleaning tank 11 comprises a cleaning tank 11 with an opening at the upper end, a plurality of cleaning units are arranged in the cleaning tank 11, each cleaning unit comprises a separation groove 31 arranged at the bottom of the cleaning tank 11, the cleaning device comprises a rotating shaft 13 rotatably connected to a cleaning box 11 and two chucks 21 fixed on the rotating shaft 13, wherein the two chucks 21 are connected through a cylindrical connecting block 22, the connecting block 22 is positioned at the eccentric position of the chucks 21, the chucks 21 are positioned in a separation groove 31, an inserting groove 23 for limiting the printing plate 12 is formed between the two chucks 21, a plurality of brush blocks 24 are uniformly distributed on the inner side surface of each chuck 21, the separation groove 31 comprises a partition plate 32 which is longitudinally arranged at the bottom of the cleaning box 11 and is parallel to the axis of the rotating shaft 13, the separation groove 31 consists of the partition plates 32 of two adjacent cleaning units, cleaning liquid is filled in the cleaning box 11, and the width of the separation groove 31 is greater than the length of; the rotating shaft 13 is connected with a stepping motor 14.

The outer side surface of the chuck 21 is provided with a stirring wheel 25. The agitating wheel 25 can agitate water in the cleaning tank 11 during rotation of the chuck 21 to increase the flow frequency of the water and the impact force on the printing plate, improving the cleaning effect and efficiency.

The width of the separation groove 31, that is, the distance between the two partition plates 32, is limited in the insertion groove 23, the brush block 24 brushes both sides of the printing plate 12 under the rotation of the rotating shaft 13, and when the connecting block 22 is located at a position close to one partition plate 32, the brush block 24 close to the other partition plate 32 is more, the friction resistance to the printing plate 12 is larger, so that the printing plate 12 moves towards the direction close to the brush block 24, otherwise, the printing plate 12 moves towards the other side, and by repeating the above steps, the printing plate 12 can be in a state that the longitudinal position and the transverse position are constantly changed, and the relative movement with the brush block 24 is also accompanied in the pushing process, so that the printing plate 12 is cleaned, and the cleaning efficiency is higher.

A plate insertion guide groove 41 that can correspond to the insertion groove 23 is provided in the cleaning tank 11. The plate-entering guide groove 41 is composed of two guide plates, and the upper end distance between the two guide plates is larger than the lower end distance.

As shown in fig. 1, 5, 6 and 7, a sleeve 42 is fixedly connected to an output shaft of the stepping motor 14, one end of the rotating shaft 13 is inserted into the sleeve 42, the rotating shaft 13 is connected with the sleeve 42 through a spline, the other end of the rotating shaft 13 is connected with a linear motor 43, the output shaft of the linear motor 43 is rotatably connected with the rotating shaft 13, a publishing mechanism common to all cleaning units is further arranged in the cleaning box 11, the publishing mechanism comprises two groups of conveying belts, each conveying belt comprises two rotating rollers 51 and a belt 52, one end of one rotating roller 51 is connected with a synchronizing gear 53, one rotating roller 51 is connected with a reducing motor 54, and the synchronizing gears 53 of the two conveying belts are meshed with each other; the outer side of the belt 52 is adhered with water absorbing cloth 55, and a publishing channel 56 is formed between the two belts 52.

After the printing plate 12 is cleaned, the chuck 21 clamps the printing plate, the rotating shaft 13 moves in the separation groove 31 under the action of the linear motor 43 and moves to the position below the publishing channel 56, the rotating shaft 13 continues to rotate slowly, when the connecting block 22 is positioned at the high position, the printing plate 12 can also be lifted to the highest position, namely the conveying belt can clamp the printing plate 12 into the publishing channel 56, and the two groups of conveying belts rotate reversely, so that the printing plate 12 moves from bottom to top in the publishing channel 56 until the printing plate extends out of the top of the cleaning box 11.

Each set of belts is provided with a scraper 57 fixed to the washing tank 11 and resting against a straight section of the belt 52 remote from the publication channel 56. While the belt is rotating continuously, the scraper 57 can wipe the water-absorbing cloth 55 on the outer wall surface of the belt 52, and the water-absorbing cloth 55 on the belt is kept in a dehydrated state, so that the dehydrating cloth can absorb water to the printing plates 12 which are moving upwards, and the cleaned printing plates 12 are dehydrated and dried.

A heater 58 is provided for each set of the conveyor belts, the heater 58 being located inside the belt 52, the heater 58 being fixed to the cleaning tank 11. During the cycle in which heater 58 is able to keep belt 52 relatively dry against the straight section of belt 52 that enters the nip of printing plates 12, printing plates 12 continue to be transported out and the dewatering cloth is continuously dewatered and dried.

As shown in fig. 4, a pulley 15 is fixedly disposed on each sleeve 42, the pulley 15 of each cleaning unit is pulled by a toothed belt 16, and an output shaft of the stepping motor 14 is connected to one of the sleeves 42.

As shown in fig. 1, a valve body 44 is fixedly arranged on an output shaft of the linear motor 43, an impeller 45 positioned in the valve body 44 is fixedly arranged on the rotating shaft 13, the rotating shaft 13 is rotatably connected with the valve body 44, a water through hole 46 communicating the valve body 44 with an inner cavity of the cleaning tank 11 is formed in the rotating shaft 13, a water inlet pipe 47 and a water outlet pipe 48 are connected on the valve body 44, and a one-way valve is respectively arranged on the water inlet pipe 47 and the water outlet pipe 48.

A clear water tank is connected to inlet tube 47, a sewage tank is connected to outlet pipe 48, the water in the check valve restriction sewage tank on the outlet pipe 48 gets into valve body 44, the check valve restriction clear water on the inlet tube 47 gets into the clear water tank by valve body 44, through the forward rotation and the counter-rotation of pivot 13, make the water that impeller 45 can drive in the washing case 11 get into in sewage tank or the clear water tank respectively and get into and wash case 11, thereby realize wasing the change of the incasement 11 water.

The partition plate 32 is provided with a communicating hole 33 for communicating water between the adjacent partition grooves 31. The axial line of the through hole 33 is vertical to the chuck 21, when water flows are communicated between the adjacent separation grooves 31, the axial line direction of the through hole 33 has larger water flow, the through hole can flush the printing plate in the direction parallel to the printing plate 12, the uniformity of water in the cleaning box 11 can also be improved, and the water quality meeting the requirement of the cleanliness in the cleaning box 11 can be maintained by continuously changing water.

The whole process can be briefly summarized as follows: the rotating shaft 13 intermittently switches the rotating direction under the action of the stepping motor 14, at the moment, the chuck plate 21 is positioned below the plate entering guide groove 41, the printing plate to be cleaned is inserted into the plate entering guide groove 41, the printing plate hanging furnace is arranged in the separation groove 31, the stepping motor 14 rotates, so that the printing plate is washed by the cleaning liquid which is positioned below the belt 52 in the horizontal plane, the linear motor 43 then drives the spindle 13 to move, so that the chuck 21 is positioned below the publication channel 56, the rotation of the chuck 21, printing plates 12 can be fed into a position where belt 52 can contact, a measuring group conveyor belt feeds printing plates 12 out of washing tank 11, in the process, the impeller 45 rotates, so that the water in the water tank and the external water can be exchanged continuously in the continuous switching process of the forward rotation and the reverse rotation of the impeller 45, to refresh the cleaning liquid in the cleaning tank 11 and to accomplish dewatering and drying of the printing plate 12 during the publication process.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A printing plate cleaning machine is characterized by comprising a cleaning box (11) with an upper end open, wherein a plurality of cleaning units are arranged in the cleaning box (11), each cleaning unit comprises a separation groove (31) arranged at the bottom of the cleaning box (11), a rotating shaft (13) rotatably connected to the cleaning box (11) and two chuck plates (21) fixed on the rotating shaft (13), the two chuck plates (21) are connected through a cylindrical connecting block (22), the connecting block (22) is positioned at the eccentric position of the chuck plate (21), the chuck plates (21) are positioned in the separation groove (31), an inserting groove (23) for limiting a printing plate (12) is formed between the two chuck plates (21), a plurality of brush blocks (24) are uniformly distributed on the inner side surface of each chuck plate (21), each separation groove (31) comprises a partition plate (32) which is longitudinally arranged at the bottom of the cleaning box (11) and is parallel to the axis of the rotating shaft (13), the separation groove (31) consists of partition plates (32) of two adjacent cleaning units, cleaning liquid is filled in the cleaning box (11), and the width of the separation groove (31) is greater than the length of the printing plate; the rotating shaft (13) is connected with a stepping motor (14).

2. The printing plate cleaning machine according to claim 1, characterized in that a plate-in guide groove (41) which can correspond to the insertion groove (23) is provided in the cleaning tank (11).

3. Printing plate cleaning machine according to claim 1 or 2, characterized in that a sleeve (42) is fixedly connected to the output shaft of the stepping motor (14), one end of the rotating shaft (13) is inserted in the sleeve (42), the rotating shaft (13) is connected with the sleeve (42) through a spline, the other end of the rotating shaft (13) is connected with a linear motor (43), the output shaft of the linear motor (43) is rotationally connected with the rotating shaft (13), a publishing mechanism which is common for all cleaning units is also arranged in the cleaning box (11), the publishing mechanism comprises two groups of conveying belts, each conveying belt comprises two rotating rollers (51) and a belt (52), one end of one of the rotating rollers (51) is connected with a synchronous gear (53), one of the rotating rollers (51) is connected with a speed reducing motor (54), and the synchronous gears (53) of the two conveying belts are meshed with each other; the outer side of the belt (52) is adhered with water absorption cloth (55), and a publishing channel (56) is formed between the two belts (52).

4. A cleaning machine for printing plates according to claim 3, characterized in that each set of conveyors is provided with a scraper (57) fixed to the cleaning tank (11) and resting against a straight section of the belt (52) remote from the publication channel (56).

5. A printing plate cleaning machine according to claim 3, characterized in that a heater (58) is arranged per conveyor, said heater (58) being located inside the belt (52), said heater (58) being fixed to the cleaning tank (11).

6. A printing plate cleaning machine according to claim 1 or 2, characterized in that a pulley (15) is fixedly arranged on each sleeve (42), the pulley (15) of each cleaning unit is pulled by a toothed belt (16), and the output shaft of the stepping motor (14) is connected with one of the sleeves (42).

7. The printing plate cleaning machine according to claim 3, characterized in that a valve body (44) is fixedly arranged on an output shaft of the linear motor (43), an impeller (45) positioned in the valve body (44) is fixedly arranged on the rotating shaft (13), the rotating shaft (13) is rotatably connected with the valve body (44), a water through hole (46) communicating the valve body (44) with the inner cavity of the cleaning box (11) is formed in the rotating shaft (13), a water inlet pipe (47) and a water outlet pipe (48) are connected with the valve body (44), and a one-way valve is respectively arranged on the water inlet pipe (47) and the water outlet pipe (48).

8. A printing plate washing machine according to claim 1 or 2, characterized in that the partition (32) is provided with through-holes (33) for allowing water between adjacent compartments (31) to communicate with each other.

9. Printing plate washing machine according to claim 1 or 2, characterized in that the outer side of the chuck (21) is provided with a stirring wheel (25).