CN210706447U - Lithographic printing rubber water roller - Google Patents
Lithographic printing rubber water roller Download PDFInfo
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- CN210706447U CN210706447U CN201920973416.XU CN201920973416U CN210706447U CN 210706447 U CN210706447 U CN 210706447U CN 201920973416 U CN201920973416 U CN 201920973416U CN 210706447 U CN210706447 U CN 210706447U
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Abstract
The utility model discloses a lithographic printing rubber water roller, it includes metal roller core (1) and surface rubber layer (3) to and priming layer (2) between metal roller core (1) and rubber layer (3), rubber layer (3) divide into inlayer and skin, the outer surface on rubber layer (3) has netted line. The utility model also discloses a preparation method of lithographic printing rubber water roller. The utility model discloses a lithographic printing rubber water roller life is longer, and has solved the napping cover and has multiplied mould and warp, fall the hair in the use to influence the problem of printing quality.
Description
Technical Field
The utility model belongs to the printing field, concretely relates to lithographic printing rubber water roller.
Background
Modern lithographic printing utilizes the principle that oil and water are not mutually soluble, ink coating is realized in a water repellent and ink hydrophilic area on a printing plate, a thin dampening water film is arranged in the ink repellent and ink hydrophilic area of the printing plate, and the area covered by the dampening water film is not stained with ink. In offset printing, a water supply system for supplying a dampening water film constitutes an offset printing system together with an ink supply system for supplying ink, a plate cylinder, and a printing plate on the plate cylinder. The lithographic printing system of different manufacturers produces because of technical advantage and market key difference, its water supply system also is different, but water supply system generally includes water tank, water bucket roller, passes water roller, cluster water roller, is wearing water roller etc. its theory of operation as follows: the fountain roller obtains fountain water from the fountain and supplies water to the water transfer roller, the size of the whole water supply amount is adjusted by the rotating speed of the fountain roller, the rotating speed is high, the water supply amount is large, otherwise, the water supply amount is small. The dampening roller does intermittent up-and-down swing, when contacting with the dampening roller, dampening water is transferred to the dampening roller, and the dampening roller keeps contacting with the dampening roller, thereby realizing water transfer. On the other hand, when the dampening roller rotates, the dampening water also moves horizontally back and forth, so that the dampening water can uniformly form a film on the dampening roller. The dampening rollers contact the printing plate on the plate cylinder and keep the areas of the printing plate that do not require inking wet. In a traditional water supply system, the water distributing roller is the same as a water bucket roller and is a chrome-plated steel roller; the water-applying roller and the water-transferring roller are the same, and are rubber rollers with metal cores and 1.5mm-2mm water velvet sleeves wrapped outside the metal cores.
The water-felted jacket on the water delivery rubber roller (water-landing roller and water-transmission roller) in the traditional water supply system is generally made of cotton cloth or chemical fiber which is degreased, and has better hydrophilic performance. The water velvet sleeve is provided with countless capillary pores, has strong adsorption effect, can ensure that the dampening roller has hydrophilicity and water absorption performance, and can convey dampening water to the dampening roller from the fountain roller so as to promote the normal operation of the planographic printing. However, the water velvet sleeve has the defects that: 1. the water pile cover made of the absorbent cotton cloth is rich in nutrient components, and is easy to breed mould when contacting fountain solution for a long time, thereby influencing the printing effect. 2. The water pile sleeve is easy to extrude and deform or accumulate in the using process, and the water feeding quantity and the uniformity are influenced, so that the printing effect is influenced. 3. The water velvet sleeves are easy to fall off, and the fluff is mixed into fountain solution and is stuck on a printing plate, so that white spots appear on the printed matter. 4. Due to repeated soaking of the fountain solution and squeezing of the roller and the roller, the water velvet sleeve is easy to age and harden, the water feeding effect is gradually deteriorated, and the water velvet sleeve needs to be replaced in 2-3 months generally.
In order to solve the above problems, the present invention is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the poor wear resistance of the water pile cover on the current lithographic printing rubber roller, fine hair easily drops and easily becomes mould, and then influences the printing effect problem, provides a water delivery nature is good, need not the lithographic printing rubber water roller of water pile cover.
The technical scheme of the utility model as follows:
the utility model discloses a lithographic printing rubber water roller, it includes metal roller core 1 and surface rubber layer 3 to and the base coat 2 between metal roller core 1 and the rubber layer 3, rubber layer 3 divide into inlayer and skin, the outer surface on rubber layer 3 has netted line.
Preferably, the mesh texture is linear mesh or honeycomb mesh.
PreferablyThe number of the lines of the linear reticulate pattern is 60-1500L/inch, and the depth is 10-2000 mu m; the mesh number of the honeycomb-shaped reticulate pattern is 200-2000L/inch, and the cell volume is 2-50 cc/m2。
Preferably, the rubber in the rubber layer 3 is one or more of vulcanized rubber, polyurethane rubber or nitrile rubber.
Preferably, the primer layer 2 is formed by treating the surface of the metal roll core 1 with a metal surface treatment agent.
Preferably, the inner layer hardness of the rubber layer is more than 10HA, and the outer layer hardness is 10HA-90 HA.
Preferably, the metal surface treatment agent is a solution formed by dissolving a coupling agent in ethanol, isopropanol or a mixture of ethanol and isopropanol at a concentration of 4-25 wt%; the processing steps are as follows: adding 3-6 wt% of water, glacial acetic acid or a mixture of the water and the glacial acetic acid into the coupling agent solution, uniformly mixing, coating the mixture on the surface of the metal roller core 1, placing the mixture in the air for 0.5-2 hours, and then baking the mixture at the temperature of 100 ℃ and 200 ℃ for 1-3 hours to form the bottom layer 2; the coupling agent is one or more of silane coupling agent, titanate coupling agent and aluminate coupling agent.
The utility model discloses a second aspect discloses the preparation method of foretell lithographic printing rubber water roller, includes following step:
A. treating the surface of the metal roller core 1 with a metal surface treating agent to form the priming layer 2;
B. coating the metal roller core 1 with the bottom layer 2 in the step A by using rubber to form a rubber layer 3 of the prefabricated offset printing rubber water roller, wherein the rubber layer has an inner layer and an outer layer;
C. b, polishing the outer surface of the rubber layer 3 of the prefabricated offset printing rubber water roller to a specified size and finish degree; the grinding is carried out by the conventional technology, such as turning and grinding;
D. c, carving, cutting or grinding to obtain the rubber surface of the prefabricated lithographic printing rubber water roller to form net-shaped grains;
E. and D, polishing the rubber surface with the reticular texture obtained in the step D again to a specified size and finish degree to obtain the lithographic rubber water roller with the reticular texture on the surface.
Preferably, the processing steps of step a are: dissolving the coupling agent in ethanol, isopropanol or a mixture of the ethanol and the isopropanol at a concentration of 4-25 wt%; adding 3-6 wt% of water, glacial acetic acid or a mixture of the water and the glacial acetic acid into the coupling agent solution, uniformly mixing, coating the mixture on the surface of the metal roller core 1, placing the mixture in the air for 0.5-2 hours, and then baking the mixture at the temperature of 100 ℃ and 200 ℃ for 1-3 hours to form the priming coat 2; the coupling agent is one or more of silane coupling agent, titanate coupling agent and aluminate coupling agent.
Preferably, the rubber in the step B is one or more of vulcanized rubber, polyurethane rubber or nitrile rubber; the rubber coating method is one of a laminating forming method, a continuous extrusion winding forming method, a mold filling forming method or a no-mold method.
Preferably, the engraving of step D is laser engraving, the cutting is cutting of a tool, and the grinding is grinding of a grinding tool.
Preferably, the mesh texture in the step D is a linear mesh or a honeycomb mesh; the number of the lines of the linear reticulate pattern is 60-1500L/inch, and the depth is 10-2000 mu m; the mesh number of the honeycomb-shaped reticulate pattern is 200-2000L/inch, and the cell volume is 2-50 cc/m2。
The utility model has the advantages that:
1. the utility model discloses a lithographic printing rubber water roller has base coat 2 between metal roller core 1 and rubber layer 3, and the base coat can promote the adhesive force of rubber layer and metal roller core to the life of extension rubber roller. The service life of the rubber roller is more than half a year.
2. The surface of the lithographic printing rubber water roller of the utility model is provided with the reticular lines which can contain fountain solution, can realize the transfer of the fountain solution without a water velvet sleeve, and solves the problems that the water velvet sleeve is propagated with mould and deformed and fallen hair in the use process, thereby influencing the printing quality; the printing quality is improved.
Drawings
Fig. 1 is a schematic diagram of the cross-sectional structure of the offset printing rubber water roller of the present invention.
Fig. 2 is a schematic view of a honeycomb-shaped mesh on the surface of the offset printing rubber water roller of the present invention.
Fig. 3 is a schematic view of the linear reticulation pattern on the surface of the offset printing rubber water roller of the present invention.
The notations in the figures have the following meanings: 1-a metal roll core; 2-priming a bottom layer; 3-rubber layer.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Example 1
A lithographic nitrile rubber water roller is composed of a metal roller core 1, a nitrile rubber layer 3 and a base coat layer 2 which is arranged between the metal roller core 1 and the nitrile rubber layer and is formed by treating with a metal surface treatment agent containing WD-52 silicon coupling agent. Wherein the nitrile rubber layer is divided into an inner rubber layer with the hardness of 50HA and an outer rubber layer with the hardness of 10HA, the inner rubber layer and the outer rubber layer are integrated, the outer surface of the nitrile rubber layer of the outer layer HAs the mesh number of 300L/inch, the depth of 660 mu m and the cell volume of 5cc/m2Honeycomb-like reticulate patterns.
The preparation method comprises the following steps: (a) cleaning the surface of the metal roller core 1; (b) dissolving a WD-52 silicon coupling agent in absolute ethyl alcohol at a concentration of 5 wt%, adding 5 wt% glacial acetic acid, uniformly mixing to form a mixture, coating the mixture on the surface of a metal roller core 1, placing the mixture in the air for 1 hour, and baking the mixture in an oven at 150 ℃ for 2 hours to form a priming coat layer 2 on the surface of the metal roller core 1; (c) coating the nitrile butadiene rubber on the outer surface of a metal roller core 1 which forms a priming layer 2 integrally by adopting a laminating forming method to form a prefabricated planographic printing rubber water roller with a rubber layer 3; (d) turning and grinding the outer surface of the rubber layer 3 of the prefabricated offset printing rubber water roller to a specified size and finish degree; (e) the outer surface of the rubber layer 3 is engraved by laser, and the number of mesh lines formed on the surface thereof is 300L/inch, the depth thereof is 2000 μm, and the cell volume thereof is 5cc/m2The honeycomb reticulate pattern is adopted to obtain the lithographic printing rubber water roller.
The obtained planographic printing rubber water roller can be directly used as a dampening roller without adding a water velvet sleeve. It was used on printers such as Hedebburgh CD102, CD74, SM74 and Gaobao Ra105, Ra106, etc. made in Germany. Tests show that the water-based performance of the ink is superior to that of a water-felted rubber covered roller, the printing quality is high, and the service life is more than half a year under the saturated production condition.
Example 2
A lithographic nitrile rubber water roller is composed of a metal roller core 1, a nitrile rubber layer 3 and a base coat layer 2 which is positioned between the metal roller core 1 and the nitrile rubber layer and is formed by hydrolyzing a metal surface treatment agent containing TMC-201 titanate coupling agent. Wherein the nitrile rubber layer is divided into a rubber inner layer with the hardness of 70HA and a rubber outer layer with the hardness of 30HA, the rubber inner layer and the rubber outer layer are integrated, and the outer surface of the nitrile rubber layer of the outer layer is provided with a linear reticulate pattern with the reticulate number of 300L/inch and the depth of 30 mu m.
The preparation method comprises the following steps: (a) cleaning the surface of the metal roller core 1; (b) dissolving TMC-201 titanate coupling agent in isopropanol with the concentration of 20 wt%, adding 5 wt% of water, uniformly mixing to form a mixed solution, coating the mixed solution on the surface of a metal roller core 1, placing the metal roller core 1 in the air for 0.5 hour, and baking the metal roller core 1 in an oven at the temperature of 120 ℃ for 2 hours to form a priming layer 2 on the surface of the metal roller core 1; (c) the nitrile butadiene rubber is integrally coated on the outer surface of a metal roller core 1 which forms a bottom layer 2 to form a prefabricated offset printing rubber water roller with a rubber layer 3; (d) turning and grinding the prefabricated offset printing rubber water roller to a specified size and finish degree; (e) and knurling and cutting the outer surface of the rubber layer 3 by using a YW1 hard alloy cutter, and forming a linear net pattern with the net line number of 300L/inch and the depth of 30 mu m on the surface of the rubber layer to obtain the offset printing rubber water roller.
The obtained planographic printing rubber water roller can be directly used as a dampening roller without adding a water velvet sleeve. It was used on printers such as Hedebburgh CD102, CD74, SM74 and Gaobao Ra105, Ra106, etc. made in Germany. Tests show that the water-based performance of the ink is superior to that of a water-felted rubber covered roller, the printing quality is high, and the service life is more than half a year under the saturated production condition.
Example 3
A lithographic printing polyurethane rubber water roller is composed of a metal roller core 1, a polyurethane rubber layer 3 and a bottom layer 2 which is positioned between the metal roller core 1 and the polyurethane rubber layer and contains a metal surface treating agent KH550 silane coupling agent and is formed by hydrolysis. Wherein the polyurethane rubber layer is divided into a rubber inner layer with the hardness of 90HA and a rubber outer layer with the hardness of 35HA, the rubber inner layer and the rubber outer layer are integrated, and the outer surface of the rubber layer is provided with a linear reticulate pattern with the reticulate number of 900L/inch and the depth of 1250 mu m.
The preparation method comprises the following steps: (a) cleaning the surface of the metal roller core 1; (b) dissolving a KH550 silicon coupling agent in absolute ethyl alcohol with the concentration of 5 wt%, adding 5 wt% glacial acetic acid, uniformly mixing to form a mixture, coating the mixture on the surface of a metal roller core 1, placing the mixture in the air for 2 hours, and baking the mixture in an oven at 150 ℃ for 2 hours to form a priming layer 2 on the surface of the metal roller core 1; (c) the polyurethane rubber is integrally coated on the outer surface of a metal roller core 1 which forms a priming layer 2 by adopting a mold filling forming method to form a prefabricated planographic printing rubber water roller with a rubber layer 3; (d) turning and grinding the outer surface of the rubber layer 3 of the prefabricated offset printing rubber water roller to a specified size and finish degree; (e) and (3) knurling and grinding the outer surface of the polyurethane rubber layer 3 by using a diamond metal bond grinding wheel, and forming linear reticulate patterns with the reticulate number of 900L/inch and the depth of 1250 mu m on the surface of the polyurethane rubber layer to obtain the lithographic printing rubber water roller.
The obtained planographic printing rubber water roller can be directly used as a dampening roller without adding a water velvet sleeve. It was used on printers such as Hedebburgh CD102, CD74, SM74 and Gaobao Ra105, Ra106, etc. made in Germany. Tests show that the water-based performance of the ink is superior to that of a water-felted rubber covered roller, the printing quality is high, and the service life is more than half a year under the saturated production condition.
Example 4
A lithographic vulcanized rubber water roller consists of a metal roller core 1, a vulcanized rubber layer 3 and a bottom layer 2 which is positioned between the metal roller core 1 and the vulcanized rubber layer and is formed by hydrolyzing a metal surface treatment agent containing a mixture of a KH550 silane coupling agent and a TMC-201 titanate coupling agent in a mass ratio of 1: 1. Wherein the vulcanized rubber layer is divided into an inner rubber layer with the hardness of 90HA and an outer rubber layer with the hardness of 38HA, the inner rubber layer and the outer rubber layer are integrated, and the surface of the outer rubber layer HAs the mesh number of 800L/inch, the depth of 2000 mu m and the mesh volume of 50cc/m2Honeycomb-like reticulate patterns.
The preparation method comprises the following steps: (a) cleaning the surface of the metal roller core 1; (b) mass ofDissolving a mixture of KH550 silane coupling agent and TMC-201 titanate coupling agent in a ratio of 1:1 in isopropanol at a concentration of 5 wt%, adding 3 wt% of water and 3 wt% of glacial acetic acid, uniformly mixing to form a metal surface treatment agent mixture, coating the metal surface treatment agent mixture on the surface of a metal roller core 1, standing in the air for 1 hour, and baking in an oven at 150 ℃ for 2 hours to form a bottom layer 2 on the surface of the metal roller core 1; (c) the vulcanized rubber is wholly coated on the outer surface of the metal roller core 1 which forms the priming layer 2 by a non-mould forming method to form a prefabricated offset printing rubber water roller with a rubber layer 3; (d) grinding the outer surface of the rubber layer 3 of the prefabricated offset printing rubber water roller to a specified size and finish degree; (e) grinding the outer surface of the vulcanized rubber layer 3 by knurling with a diamond resin bonded grinding wheel to form a mesh on the surface with a mesh number of 800L/inch, a depth of 2000 μm and a mesh volume of 50cc/m2To obtain the lithographic printing squeegee.
The obtained planographic printing rubber water roller can be directly used as a dampening roller without adding a water velvet sleeve. It was used on printers such as Hedebburgh CD102, CD74, SM74 and Gaobao Ra105, Ra106, etc. made in Germany. Tests show that the water-based performance of the ink is superior to that of a water-felted rubber covered roller, the printing quality is high, and the service life is more than half a year under the saturated production condition.
It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications can be made by one skilled in the art after reading the disclosure of the present invention, and such equivalents will still fall within the scope of the invention as defined by the appended claims.
Claims (6)
1. A planographic printing rubber water roller is characterized by comprising a metal roller core, a metal roller core (1), a surface rubber layer (3) and a base layer (2) between the metal roller core (1) and the rubber layer (3); the rubber layer (3) is divided into an inner layer and an outer layer, and the surface of the outer layer of the rubber layer (3) is provided with reticular grains.
2. The lithographic squeegees of claim 1 wherein the network is a line or honeycomb network.
3. The lithographic squeegee of claim 2, wherein the linear screen has a screen line number of 60 to 1500L/inch and a depth of 10 to 2000 μm; the mesh number of the honeycomb-shaped reticulate pattern is 200-2000L/inch, and the cell volume is 2-50 cc/m2。
4. The lithographic printing rubber water roller as claimed in claim 1, wherein the rubber in the rubber layer (3) is one or more of vulcanized rubber, polyurethane rubber or nitrile rubber.
5. The planographic printing squeegee according to claim 1, wherein the primer layer (2) is a primer layer formed by treating the surface of the metal roll core (1) with a metal surface treatment agent.
6. The lithographic printing squeegee according to claim 1, wherein the hardness of the inner layer of the rubber layer (3) is 10HA or more, and the hardness of the outer layer of the rubber layer (3) is 10HA to 90 HA.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920973416.XU CN210706447U (en) | 2019-06-26 | 2019-06-26 | Lithographic printing rubber water roller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920973416.XU CN210706447U (en) | 2019-06-26 | 2019-06-26 | Lithographic printing rubber water roller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110239202A (en) * | 2019-06-26 | 2019-09-17 | 云南卓印科技有限公司 | A kind of lithographic printing rubber damping roller and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110239202A (en) * | 2019-06-26 | 2019-09-17 | 云南卓印科技有限公司 | A kind of lithographic printing rubber damping roller and preparation method thereof |
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