KR100616119B1 - Supply device of coating solution for the printing body - Google Patents

Abstract

The occurrence of frictional noise in the slide contact portion between the both sides of the chamber 30 supplying the coating liquid to the plate surface 11 of the printing plate body 10 and the both sides of the plate body 10 is suppressed, In order to prevent degradation of the seal performance and to extend the life of the side seal, by applying a solvent component of the coating liquid to the slide contact portion, the friction of the slide contact portion is reduced and applied at the slide contact portion. The solvent component of the liquid volatilizes and the degradation of the sealing performance by the solidification of the solute component is prevented.

Description

Supply device for coating solution for the printing body {Supply device of coating solution for the printing body}

1 is an overall schematic view showing a first embodiment of a coating liquid supplying apparatus for a plate body according to the present invention;

2 is an overall schematic view showing a second embodiment of a coating liquid supplying apparatus for a plate body according to the present invention;

3 is an overall schematic view showing a third embodiment of a coating liquid supplying apparatus for a plate body according to the present invention;

4 is an overall schematic view showing a fourth embodiment of a coating liquid supplying apparatus for a plate body according to the present invention;

5 is a side view of the side seal 34 in the fourth embodiment.

Fig. 6 is a plan sectional view of a side seal 34 portion in the fourth embodiment.

7 is a side cross-sectional view of a coating liquid supplying device for a conventional printing plate body.

8 is a plan sectional view of a portion of the chamber 30 of a conventional apparatus.

9 is an overall schematic diagram of a conventional apparatus.

* Explanation of symbols for main parts of the drawings

10 Print Plate 11 Plate

20 compacts 30 chambers

31 Liquid reservoir 32 Seal plate

33 Dr. Blade 34 Side Seal

41 Supply pipeline 42 Return pipeline

50 Supply Pump 60 Coating Liquid Tank

80 Solvent Loading Means

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating liquid supplying apparatus for a printing plate body which supplies a coating liquid such as a coating agent and ink to a plate such as a coating roll and a printing plate body in a coating machine, a gravure printing machine, and the like.

9 shows a coating apparatus for coating liquid on sheet materials such as a conventional coater and a gravure printing machine.

This coating apparatus presses the sheet | seat material S on the plate surface 11 of the plate body 10, such as a coating roll and a printing plate body, with the press body 20 from upper direction, and puts a plate surface (on the surface of the sheet material S). 11) Transfer the coating liquid such as the coating material and the ink attached to it.

The coating liquid supply device for supplying the coating liquid to the plate surface of the printing plate body 10 includes a chamber 30 disposed at the side surface of the plate body 10, a coating liquid tank 60 for storing the coating liquid, Supply pipe 41 for feeding the coating liquid from the coating liquid tank 60 to the chamber 30 through the supply pump 50, and a return pipe for returning the coating liquid from the chamber 30 to the coating liquid tank 60. It consists of 42.

Fig. 7 shows a side cross-sectional view of this coating device. As shown in this figure, in the chamber 30, the liquid storage part 31 which opens and opposes the plate surface 11 of the plate body 10 is formed, The said supply line 41 and the said return line 42 Are respectively communicated with the lower and upper portions of the liquid storage part 31. In addition, the seal plate 32 provided at the lower end of the opening of the liquid storage part 31 seals between the lower end of the opening of the liquid storage part 31 and the plate surface 11 and at the upper end position of the opening. By the doctor blade 33 provided, the excess coating liquid adhering to the plate surface 11 is removed.

8 is a plan view of the plate body 10 and the chamber 30 of the coating device viewed from above. In addition, in this figure, only the left side part is shown from the chamber 30 side toward the plate body 10 side, but the right side part also has the same structure as this figure, and the chamber 30 part has shown sectional drawing in this figure.

As shown in this figure, smooth surfaces 12 of a predetermined width are formed on both sides of the plate surface 11 of the plate body 10, and on both sides of the opening portion of the liquid storage part 31 of the chamber 30, this smoothness is provided. The side seal 34 made of plastic, hard rubber, or the like is provided at a position opposite to the face 12. These side seals 34 and the smooth surface 12 of the plate body 10 are slide-contacted with each other by the chamber 30 being pressed against the plate body 10 as a whole to prevent leakage of the coating liquid in the liquid storage part 31. It is to prevent.

However, according to the conventional coating liquid supplying device, the slide contact portion between the smooth surface 12 of the plate body 10 and the side seals 34 on both sides of the chamber 30 reliably prevents leakage of the coating liquid. In order to press against each other with a relatively strong force for this purpose, the high friction sound squeezed by the rotation of the plate body 10 generate | occur | produced, and the working environment was deteriorated.

In addition, the side seal 34 and the slide contact portion between the smooth surface 12 soak the coating liquid collected in the liquid storage part 31, and the volatile component (solvent component) of the coating liquid volatilizes, thereby making this side seal. The non-volatile component (solute component) of the coating liquid solidifies between the 34 and the smooth surface 12, and a large friction sound that causes further deterioration of the working environment is generated due to the non-volatile component of the solidified coating liquid. In addition, the sealing performance of the side seal 34 and the smooth surface 12 fell because of the nonvolatile content of this solidified coating liquid, and leakage of the coating liquid might occur from this part.

In addition, since a large frictional force acts on the side seal 34 during the coating operation, and the nonvolatile components of the solidified coating liquid tend to be crushed and damaged, the side seal 34 has a short life and must be replaced frequently. It became.

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem. In the slide contact portions on both sides of the plate body and the chamber, the occurrence of frictional noise that causes deterioration of the working environment is suppressed and the seal performance of the slide contact portion is reduced. An object of the present invention is to provide a coating liquid supplying device for a printing plate body that can be prevented.

In order to solve the said subject, the coating liquid supply apparatus for the printing plate body which concerns on this invention is the chamber provided along the plate surface of the said printing plate body in the side position of the printing plate body which apply | coats a coating liquid to the surface of the sheet material, and the said printing plate A liquid storage portion formed in the chamber having an opening facing the plate surface of the sieve, coating liquid supply means for supplying the coating liquid to the liquid storage portion, coating liquid discharge means for discharging the coating liquid from the liquid storage portion; And side seals provided at both sides of the opening of the chamber and slidingly contacting both sides of the printing plate body to prevent leakage of the coating liquid in the liquid storage portion, and the side seals and the slide contact portions of both sides of the printing plate body. It is characterized by comprising a lubricant supply means for supplying a lubricant.

According to such a coating liquid supply device, since lubricant is supplied to the slide contact portions on both sides of the plate body and the chamber by the lubricant supply means, the lubricant is infiltrated into the slide contact portion, and the slide contact portion on both sides of the plate body and the chamber is applied. It is possible to reduce the coefficient of friction between the plate and the chamber, thereby suppressing the occurrence of friction noise which causes deterioration of the working environment.

In addition, by lubricating the slide contact portion, the coating liquid in the liquid storage portion is suppressed from penetrating the slide contact portion, and the non-volatile content of the coating liquid is solidified at the slide contact portion to prevent the sealing performance from deteriorating. can do.

In addition, the friction at the slide contact portion is reduced, and the non-volatile content of the coating liquid is prevented from solidifying at the slide contact portion, thereby reducing the load such as friction force acting on the side seal. Therefore, damage to the side seal can be reduced, and the life of the side seal can be extended.

The lubricant supplied by such a lubricant supply means penetrates into the slide contact portions on both sides of the plate body and the chamber, and it is good to reduce the coefficient of friction of the slide contact portion. It is preferable to use the solvent component of a coating liquid from a viewpoint of preventing.

Moreover, it is preferable that this lubricant supply means is provided with the supply amount control means which controls the supply amount of a lubricant. If such a supply amount control means is provided, the lubricant is more than necessary while obtaining the effect of lowering the friction coefficient of the slide contact portion and the effect of lowering the seal performance, which are necessary according to the working conditions such as temperature, humidity, viscosity and concentration of the coating liquid. Supplying the lubricant can prevent the lubricant from falling off the slide contact portion.

Such lubricant supply means can be specifically configured as a lubricant dropping means for supplying lubricant to the slide contact portion by dropping lubricant on the side seals and the slide contact portions on both sides of the plate body. In this way, the lubricant supply means can be configured simply and inexpensively.

Alternatively, such lubricant supply means may be configured as lubricant injection means for injecting lubricant from the lower side or from the side with respect to the slide contact portions on both sides of the side seal and the plate body.

Alternatively, the lubricant supply means is provided in the side seal and has a lubricant supply path whose end is opened at the slide contact portions on both sides of the side seal and the plate body, and through the lubricant supply path, the side seal and The lubricant may be provided to the slide contact portions on both sides of the plate body. In this way, the lubricant can be reliably supplied to the slide contact portions on both sides of the side seal and the plate body, and the lubricant can be prevented from falling off from the slide contact portion by supplying more lubricant than necessary.

In the case where the lubricant is supplied through the lubricant supply passage in the side seal in this manner, it is preferable to form a lubricant storage portion that is open toward the plate body at the end of the lubricant supply passage. In this way, a predetermined amount of lubricant is always secured to the lubricant liquid storage portion, and the lubricant can be more reliably supplied to the slide contact portion between the plate body and the side seal.

In the case where the lubricant is supplied by the lubricant supply passage provided in the side seal, the end of the lubricant supply passage is configured to open at the lower end portions of the slide contact portions on both sides of the side seal and the plate. desirable. In this case, since lubricant is supplied to the side seals and the slide contact portions on both sides of the plate, particularly near the lower end portions of the slide contact portions, which are susceptible to friction noise and damage to the seals, the friction at these portions is reduced and the seal performance can be efficiently The fall can be prevented and damage to the seal can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS The 1st Embodiment of the coating paper provided with the coating liquid supply apparatus for the board body which concerns on this invention is shown. This coating apparatus presses the sheet | seat material S which consists of paper, a plastic film, etc. by the press body 20 from the upper surface to the board surface of plate bodies 10, such as a coating roll and a printing plate body, and this sheet | seat material S The coating liquid, such as a coating agent and ink, affixed to the plate surface 11 on the surface of this is transferred.

The coating liquid supplying device for supplying the coating liquid to the plate surface of the plate body 10 includes a chamber 30 disposed at the side surface of the plate body 10, a coating liquid tank 60 storing the coating liquid, and the coating. Supply pipe 41 for supplying the coating liquid from the liquid tank 60 to the chamber 30, the feeding pump 50 for feeding the coating liquid in the supply pipe 41, and the coating liquid tank from the chamber 30 A return pipe 42 for returning the coating liquid to 60 and a solvent dropping means (lubricant dropping means) 80 for dropping the solvent component of the coating liquid as a lubricant on both sides of the plate body 10 and the chamber 30. Equipped. In addition, 15 is a dish receiving plate which receives the spill liquid of a coating liquid.

The structure in the chamber 30 of this apparatus is the same as that of the conventional apparatus shown in FIG.

That is, as shown in FIG. 7, in the chamber 30, the recessed part provided so as to oppose the plate body 10 is the liquid storage part 31 which stores the coating liquid in the inside, The said supply pipe 41 And the return line 42 is in communication with the lower and upper portions of the liquid storage part 31, respectively.

The seal plate 32 made of a plastic plate or the like such as polyethylene film on the front lower end of the liquid storage part 31, that is, the upstream side of the plate body 10 in the rotational direction thereof, so as to follow the rotational direction of the plate body 10. Is provided, and the front end of the liquid storage part 31 is sealed by pressing the front end of the seal plate 32 against the plate surface 11 of the plate body 10.

In addition, a doctor blade (33) made of a stainless steel plate or a steel sheet material is disposed at the front lower end of the liquid storage part 31, that is, the downstream side in the rotational direction of the plate body 10 so as to face the rotational direction of the plate body 10. ), And the front end of the liquid storage part 31 is sealed while the tip end of the doctor blade 33 is pressed against the plate surface 11 of the plate body 10. Therefore, the excess coating liquid adhering to the plate surface 11 is scraped off by the doctor blade 33.

As shown in FIG. 8, smooth surfaces 12 of a predetermined width are formed on both sides of the opening of the plate surface 11 of the plate body 10, and on both sides of the liquid storage unit 31 of the chamber 30. The side seal 34 made of plastic, hard rubber, or the like is provided at a position opposite to the smooth surface 12. These side seals 34 and the smooth surface 12 of the plate body 10 are slide-contacted with each other by the channel 30 being pressed against the plate body 10 as a whole, so that the coating liquid in the liquid storage part 31 It is designed to prevent leakage.

Next, the solvent dropping means (lubricant dropping means) 80 provided on both sides of the plate body 10 and the chamber 30 will be described.

Returning to FIG. 1, the solvent drop which drips the solvent component of a coating liquid on the side seal 34 of the chamber 30 and the slide contact part (both parts of the chamber 30) of the smooth surface 12 of the plate body 10 is carried out. The means 80 includes a solvent tank 81 disposed above the apparatus, solvent pipe paths 83 and 83 for supplying a solvent to the slide contact portions of the plate body 10 and the chamber 30, and the solvent pipe path ( And dripping control valves 82 and 82 for controlling the dripping amount of the solvent dripping onto the slide contact portion on the 83 and 83.

According to the supply apparatus of the coating liquid provided with such a solvent loading means 80, the solvent dripped at the slide contact part of the plate body 10 and the chamber 30 is between these plate body 10 and the chamber 30. By infiltrating, the friction coefficient of the slide contact portion can be lowered to suppress the occurrence of friction noises that cause deterioration of the working environment.

In addition, the coating liquid collected in the liquid storage part 31 of the chamber 30 is prevented from leaking out to the slide contact portion, and the solvent component is also supplemented to the coating liquid that has leaked out from the slide contact portion to apply the coating liquid. It is possible to prevent the solute component of the liquid from solidifying and to reduce the decrease in the sealing performance of the slide contact component.

In addition, since the friction of the slide contact portion is reduced, and the non-volatile components of the coating liquid are prevented from solidifying at the slide contact portion, the load such as the frictional force acting on the side seal 34 is reduced. It is possible to increase the service life of 34), reduce the number of frequently exchanged labors, and suppress the increase in operating costs.

In addition, according to the working conditions such as temperature, humidity, viscosity and concentration of the coating liquid, the opening degree of the drop amount control valves 82 and 82 can be adjusted to adjust the amount of solvent to be dripped to the slide contact portion. It is possible to prevent the solvent from dropping more than necessary while falling from the slide contact portion while obtaining the above-described working effect.

Next, a second embodiment of the coating liquid supplying apparatus according to the present invention will be described.

2 shows a schematic perspective view of the coating liquid supplying apparatus according to the present embodiment. In addition, in description of the following embodiment, the same code | symbol is attached | subjected to the same component part as the said 1st Embodiment, and duplication description is abbreviate | omitted.

This apparatus is provided with the solvent loading means (lubricant loading means) 85 and 85 which can respectively store the solvent as a lubricant on both sides of the board | plate body 10 and the chamber 30. As shown in FIG. Such solvent dropping means 85 and 85 can also reduce frictional noise as in the above-described embodiment, and can prevent a decrease in the sealing performance of the slide contact portion.

As described above, the lubricant dropping means (solvent dropping means) of the coating liquid supplying device according to the present invention adopts a configuration as long as the lubricant can be dropped onto the slide contact portions on both sides of the plate body 10 and the chamber 30. You may also do it.

Next, a third embodiment of the coating liquid supplying apparatus according to the present invention will be described.

3 shows a schematic perspective view of the coating liquid supplying apparatus according to the third embodiment. The solvent supply means (lubricant supply means) of this apparatus is a pump 92 from the solvent tank 91 with respect to the injection nozzles 97 and 97 disposed below the slide contact portions on both sides of the plate body 10 and the chamber 30. Is applied as a solvent spraying means (lubricant spraying means) 90 which pressurizes and supplies the solvent component (solvent) of the coating liquid through the solvent pipe path 94 by means of (). In addition, 93 is a main shutoff valve which opens and closes the solvent pipe line 94, 95 and 95 are supply amount adjustment valves which control the amount of solvent supplied to the injection nozzles 97 and 97, and comprise supply amount control means.

When the solvent is supplied to the slide contact portion by such a solvent spraying means (lubricant spraying means) 90, the solvent may be sprayed continuously, for example, one spray may be continuously performed every 30 seconds. . Continuous injection can be easily realized by opening and closing the main shutoff valve 93.

Thus, even if the solvent supply means (lubricant supply means) is constituted by such a solvent spray means (lubricant spray means) 90, the coefficient of friction at the slide contact portions of both the plate body 10 and the chamber 30 It is possible to suppress the occurrence of frictional noise, which causes deterioration of the working environment, and to prevent the degradation of the sealing performance of the slide contact portion. In addition, it is possible to reduce the frictional force acting on the side seal 34 and increase its life.

In addition, the solvent spraying means 90 is configured to inject the solvent into the lower portion of the slide contact portions on both sides of the plate body 10 and the chamber 30, so that the injected solvent is prevented from rotating the plate body 10. Since the slide contact portion is conveyed upward, the slide contact portion can be efficiently penetrated as a whole.

However, in this embodiment, although the solvent injection means (lubricant injection means) 90 was comprised so that the solvent may be injected from the lower side with respect to the slide contact parts of both sides of the board | substrate 10 and the chamber 30, the slide contact You may comprise so that it may spray from arbitrary directions, such as spraying from the side or inclined upward or inclined downward with respect to a part.

Next, a fourth embodiment of the coating liquid supplying apparatus according to the present invention will be described.

4 to 6 each show a schematic perspective view of the coating liquid supply device according to the fourth embodiment, a side view of the side seal 34, and a partial cross-sectional plan view of the side seal 34 portion, respectively.

The solvent supply means (lubricant supply means) 70 of this apparatus is configured to supply the solvent supplied from the solvent tank 71 through the supply amount control valves 72 and 72 and the solvent conduit 73 to side seals on both sides of the chamber 30. It is comprised so that it may supply to the slide contact part of both sides of the plate body 10 and the chamber 30 via the solvent supply path 74 provided in 34. As shown in FIG.

The solvent supply path 74 provided in the side seal 34 extends downward from the upper end surface of the side seal 34 connected to the solvent supply pipe 73, as shown in FIG. 5 and FIG. And from the lower height positions of the slide contact portions on both sides of the chamber 30 toward the plate body 10 side and open in the slide contact portion. In addition, a solvent storage portion (lubricant storage portion) 75 larger than a cross section of the solvent supply passage 74 is formed in this opening portion, and the solvent transferred from the solvent supply passage 74 is once the solvent storage portion ( 75) and penetrates into the slide contact portions on both sides of the plate body 10 and the chamber 30.

Thus, in this coating liquid supply apparatus, since the solvent storage part 75 is formed in the terminal part of the solvent supply path 74 in the side seal 34, the solvent gathered in this solvent storage part 75 is Since it contacts both sides of the plate body 10 in a sufficiently large area according to the opening area of the plate body 10 side of the solvent storage portion 75, it is necessary to the slide contact portions on both sides of the plate body 10 and the chamber 30. Positive solvents can be reliably supplied.

Further, since the solvent (lubricant) is directly supplied from the inner side of the slide contact portion to the slide contact portions of the side seal 34 and the plate body 10, more solvent (lubricant) than necessary is supplied to the slide contact portion. It is possible to prevent the lubricant from falling off.

By the way, in this coating liquid supply apparatus, as shown in FIG. 5, the upper part 321 of the seal plate 32 which prevents the leakage of coating liquid from the lower part of the chamber 30 is the plate body 10 and the side seal ( It is formed so as to cover a part of the lower surface of the front side of the side seal 34 formed in an arc shape in which the plate body 10 is in sliding contact with the plate body 10 so as to be rolled into the slide contact portion of the slide member 34. It is configured to prevent the coating liquid leakage from. However, according to such a structure, since the step | step is formed in the slide contact part of the plate body 10 and the side seal 34 in the vicinity of the upper end 322 of the seal plate 32, the coating liquid in the chamber 30 is this same. There is a drawback that the solvent component leaks out from the step and the solute component tends to solidify.

Thus, in this coating liquid supply device, the solvent storage portion 75 is located at a portion including the upper end portion 322 of the seal plate 32 where solidification of the coating liquid is particularly likely to occur. It is possible to prevent the solidification of the coating liquid in the.

According to the structure provided with the solvent supply means (lubricant supply means) 70 which supplies a solvent (lubricant) directly to the plate body 10 and the slide contact part from such side seal 34, the said 1st-3rd Compared with the embodiment, the solvent (lubricant) can be supplied to the slide contact portions on both sides of the plate body 10 and the chamber 30 more reliably, thereby reducing the friction noise and further improving the sealing performance of the slide contact portion. The fall can be prevented.

As mentioned above, although this invention was demonstrated based on embodiment, the coating liquid supply apparatus to the board body which concerns on this invention is not limited to the said embodiment, For example, coating liquid supply means, coating liquid discharge means, a lubricant. The supply means, the supply amount control means and the like may be configured by any known technique.

In addition, in the said embodiment, although the structure which supplies the solvent component of a coating liquid was mentioned as a lubricant, as long as it can reduce the friction coefficient of a slide contact part, any arbitrary well-known lubricant can be used.

As described above, according to the coating liquid supplying device for the printing plate body according to the present invention, since the lubricant supply means for supplying the lubricant to the slide contact portions on both sides of the plate body and the chamber is provided, the lubricant is permeated to the slide contact portion. In addition, the friction between the plate body and the chamber in the slide contact portions on both sides of the plate body and the chamber can be reduced, and the occurrence of frictional noise that causes deterioration of the working environment can be suppressed, and the degradation of the seal performance of the slide contact portion can be prevented. have. In addition, by reducing the friction and the like acting on the side seal, the life of the side seal can be extended.

Claims (8)

A chamber provided along the plate surface of the printing plate body at a side surface of the printing plate body for applying the coating liquid to the surface of the sheet material; A liquid storage portion formed in the chamber, the opening portion facing the plate surface of the printing plate body; Coating liquid supply means for supplying a coating liquid to the liquid storage part; A coating liquid discharge means for discharging the coating liquid from the liquid storage part; Side seals provided at both sides of the opening of the chamber and slidingly contacting both sides of the printing plate to prevent leakage of the coating liquid in the liquid storage part; And a lubricant supply means for supplying a solvent component of the coating liquid to the side seals and the slide contact portions on both sides of the printing plate body. delete The method of claim 1, The lubricant supply means, And a supply amount control means for controlling the supply amount of the solvent component of the coating liquid. The method of claim 1, The lubricant supply means, And a lubricant dropping means for dropping the solvent component of the coating liquid on the side seals and the slide contact portions on both sides of the printing plate body. The method of claim 1, The lubricant supply means, A coating liquid supplying device for a printing plate body, characterized in that it is configured as lubricant injection means for injecting a solvent component of the coating liquid from the lower side or from the side to the slide contact portions on both sides of the side seal and the printing plate body. The method of claim 1, The lubricant supply means, A lubricant supply passage provided in the side seal and having an end thereof at a slide contact portion on both sides of the side seal and the printing plate body, and through the lubricant supply passage; A coating liquid supply apparatus for a printing plate body, characterized in that configured to supply a solvent component of the coating liquid to a contact portion. The method of claim 6, At the end of the lubricant supply passage, A coating liquid supplying device for a printing plate body, characterized in that a lubricant storage portion is opened toward the printing plate body side. The method according to claim 6 or 7, The end of the lubricant supply passage, A coating liquid supplying device for a printing plate body, characterized in that it is configured to open at the lower end portions of the side seals and the slide contact portions on both sides of the printing plate body.

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