JPH07213969A - Applicator for surface protection layer of card - Google Patents

Abstract

PURPOSE:To provide an applicator which can apply a surface protection layer of a card stably and normally even when the card is warped or twisted in such a way that troubles in the application on the surface of the card which are caused by the generation of a jam or deviation when an application part is transferred and cause the damage to the card or the stain of a transfer passage by a liquid to be applied are eliminated. CONSTITUTION:In an applicator for applying an application liquid on the surface of a card in which the card 11 as a material to be coated which was transferred on a conveyer 20 is contacted with a application head 110 which has an application member comprising a porous body and a fibrous material or a fibrous fabric, a press roller 170 is installed for pressing the card on the upstream side of a transfer passage, and the application is conducted while the card being nipped on the transfer belt 25 by the press roller immediately in front of an application part or while the card being fed by a nip belt, a gate roller, or robot hand.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating device for uniformly applying a surface protective layer on the surface of small cards such as licenses and ID cards.

[0002]

2. Description of the Related Art In recent years, the development of cards and the expansion of their use have been extremely remarkable, but in particular, ID cards and various cards related to identification such as licenses are also increasing.

Naturally, these have problems in preventing forgery and protection against scratches and the like due to handling, and countermeasures against them are important. Such cards often use special photographic prints, and in the past, the method of lamination was generally used. This method is a good method including surface protection, but air bubbles are mixed in during lamination. However, there is a problem that after lamination, it takes time and labor such as punching for finishing and cost is increased. On the other hand, the method of directly applying the resin may be excellent in terms of cost, and for example, there is a method of using a coating roll as disclosed in JP-A-2-268864.

Further, as a coating method excellent in maintainability, the card which has been conveyed on the conveyor is brought into contact with a coating head having a coating member made of a porous material, a fibrous material or a fibrous woven fabric to form a card surface protective layer. There is a method of applying.

[0005]

However, the card has a warp and a twist, and therefore, when the card as an object to be coated is carried on the transport conveyor, the distance between the lower part of the coating section and the transport surface is reduced. Since the card was very short, the card tip could not go under the coating part due to its warpage and twisting, causing a transportation jam.

If the card is warped or twisted, the position detection sensor of the card may malfunction.

An object of the present invention is to solve the above problems even when the card is warped or twisted.

[0008]

The two objects are solved by any one of the following technical means a, b, c, d, e, f and g.

(A) In a coating apparatus for forming a hard coat as a card surface protective layer on a card as an object to be coated which is conveyed on a conveyor belt, a pressing roller provided immediately before the coating section serves as the object to be coated. A card surface protective layer coating apparatus, which coats a card while nipping it between the card and the conveyor belt.

(B) In a coating device for forming a hard coat as a card surface protection layer on a card as an object to be coated, a card as the object to be coated is applied while being nipped by a nip belt provided immediately before the coating section. An apparatus for coating a card surface protective layer, which is characterized by:

(C) In a coating device for forming a hard coat as a card surface protection layer on a card as an object to be coated, a card as an object to be coated is applied while being nipped by a gate roller provided immediately before the coating section. An apparatus for coating a card surface protective layer, which is characterized in that

(D) In a coating apparatus for forming a hard coat as a card surface protection layer on a card as an object to be coated, the card is sandwiched by a robot hand and conveyed to the coating section. Card surface protection layer coating device.

(E) In a coating apparatus for forming a hard coat as a card surface protective layer on a card as an object to be coated which is conveyed on a conveyor belt, a pressing roller provided immediately before the coating section serves as the object to be coated. A card surface protective layer coating apparatus, which conveys a card while nipping it between the card and the conveyor belt, and releases the nip at the same time when the card comes into contact with the coating section.

(F) In a coating device for forming a hard coat as a card surface protection layer on a card as an object to be coated, the card as the object to be coated is conveyed while being nipped by a nip belt provided immediately before the coating section. Then, at the same time when the application section and the card come into contact with each other, the nip is released to apply the card surface protective layer.

(G) In a coating apparatus for forming a hard coat as a card surface protective layer on a card as an object to be coated, the card as the object to be coated is conveyed while being nipped by a gate roller provided immediately before the coating section. A card surface protective layer coating apparatus, wherein the nip is released at the same time when the card is contacted with the coating section.

[0016]

EXAMPLES The coating apparatus of the present invention is not particularly limited as long as it can coat a protective layer on the surface of a card. For example, a coating method using an applicator, a coating method using a knife coater, a wire bar coating method, A method of contacting the card with a coating head having a coating member made of a porous material, a fibrous material or a fibrous fabric, and a roll coating method can be considered.

Here, the apparatus of Example 1 and the roll coating method are used, in which the card and the coating head having a coating member made of a porous material, a fibrous material or a fibrous woven material are brought into contact with each other for coating. Claims 1 to 7 according to the device of Example 2
Each of the embodiments will be described.

Here, as shown in the contact behavior diagram of FIG. 14, the apparatus of the first embodiment is apt to cause a conveyance jam because the tip of the card 11 is caught by the coating head 110.

In the apparatus of the second embodiment, as shown in the contact behavior diagram of FIG. 13, even if the leading edge of the card 11 hits the coating roller 210, it is carried by the roller 210 as it is, so that it does not easily become a jam. The bead 12 is attached to the front surface, and the bead 14 portion easily wraps around the back surface of the card, so that the card is easily contaminated.

First, the apparatus of the first embodiment will be described with reference to FIGS.

In FIG. 1, a card-shaped object 11 to be coated is a card feeder in which a belt 25 of an endless belt 25 wound around a driving wheel 21 and driven wheels 22 and 23 is placed on a conveyor 25. Card as 10 to be coated
11 sheets are supplied and set one by one and conveyed to the coating position.
Positioning and fixing to the card 11 as an object to be coated can be achieved by means of suction, friction, adhesion, static electricity, claw-shaped projections, or the like. At the coating position, a coating unit 100 including a coating liquid tank (coating liquid reservoir) 101 and a coating unit (coating head) 110 having a coating member 107 is on standby.

Since both sides of the endless belt entering the coating position are held by the guide rails and slidable on the guide rails, the height direction and the width direction are accurately held. At the coating position, the coating unit (coating head) 110 of the coating unit 100 is slightly pushed down, and the coating member 107 and the conveyor belt 25 on the lower surface of the coating unit (coating head) 110 are pushed.
The above-mentioned card 11 as the object to be coated is contacted with a uniform pressure in the width direction to supply the required amount of the coating liquid 102 from the coating liquid tank (coating liquid reservoir) 101, and the coating exuded on the coating member 107. The liquid 102 is applied by a uniform application liquid transfer onto a card 11 as an object to be coated on a moving conveyor belt 25. Then, when the rear end of the card 11 as the object to be coated comes, the coating section 110 is disconnected from the coating liquid tank 101 and the coating is completed.

The coating section (coating head) 110 descends to the head of the card 11 as the coating object when the card 11 as the coating object reaches below the coating section (coating head) 110, and becomes the card as the coating object. A conveyor that conveys the card 11 as an object to be coated such as a pallet or a stage by contacting with 11 and rising from the rear end of the card as the object to be coated at the end of coating and separating from the card 11 as the object to be coated. It is possible to prevent the liquid from adhering to the belt 25 and the backing of the coating liquid on the back surface of the card as an object to be coated.

The vertical mechanism for contacting and separating the coating section (coating head) 110 and the card 11 as the object to be coated is not limited to the method of moving the coating section (coating head) 110 up and down. Conveyor 25 carrying cards
You may raise and lower with 11.

In this case, the raising / lowering mechanism for contacting the coating section (coating head) 110 with the card 11 as the object to be coated is carried out by pushing up or down the belt surface of the conveyor 25.

When the coating section (coating head) 110 is moved up and down, the coating section (coating head) 110 and the coating liquid reservoir 101 may be separated, and only the coating section (coating head) 110 may be moved up and down. At this time, the coating section (coating head) 110 and the coating solution reservoir 101 are connected by a liquid feeding tube, and the coating section (coating head) 1
It is preferable that each of 10 and the coating liquid reservoir (coating liquid tank) 101 can be easily replaced by a cartridge type. Further, a coating liquid reservoir (coating liquid tank) 101 and a coating unit (coating head) 110
When a valve is provided between the cartridges, the liquid-feeding tube is pressed to shut it off or to return it to the original state, thereby making it possible to miniaturize the parts for cartridge replacement.

When the coating liquid reservoir (coating liquid tank) 101 is hermetically closed, the internal pressure changes due to environmental temperature changes, etc., and the liquid supply to the coating unit (coating head) 110 is not constant, and stable coating cannot be performed. Therefore, the coating liquid reservoir (coating liquid tank) 101 is preferably open to the atmosphere.

Then, a card on the conveyor belt 25 at a position close to the coating unit (coating head) 110 on the upstream side.
A pressing roller 170 is provided to press the card 11 and
Is pressed just before entering the coating unit (coating head) 110. The operation of this will be described in detail later.

Card 11 as an object to be coated after coating
Is carried to the next processing unit 30 for irradiating energy rays, where it is irradiated with ultraviolet rays or the like, and the applied material is cured and finished. Then, it is collected when it passes through the processing unit 30.

By bending the conveying path of the conveying device 20 as shown in FIG. 1 and installing the processing section 30 at that position, the energy rays leaking in the lateral direction can be prevented even if the shielding condition of the energy ray irradiation is a little bad. The part of the coating member 107 is not solidified.

The processing section 30 may be installed as a separate device adjacent to the coating means 100 instead of the coating device.

Next, various structures of the coating means 100 in the present invention will be described.

FIG. 2 is a side sectional view of one embodiment of the coating means 100, in which the coating liquid is put into a coating liquid tank (coating liquid reservoir) 101 together with an internal member 121 and a coating portion (coating head) 110. Is a fibrous material such as felt, non-woven fabric, cotton, or
A coating member 107A made of a fibrous woven fabric such as velvet or suede, a woven fabric or the like is provided, and the coating liquid 102 is coated on the card 11 as an object to be coated.

A coating means 10 according to another embodiment is shown in FIG.
It is a side sectional view of 0. The coating liquid tank (coating liquid reservoir) 101 and the coating portion (coating head) 110 are partitioned by upper and lower partition walls 103 to form an integrated structure, and the bottom portion is called a fibrous material, velvet, or suede as described above. An application member 107 made of a fibrous woven fabric such as velvet or woven fabric is covered. Then, as shown in FIG. 3B, the intermediate partition 103
A small taper hole 105 is formed in the center of the piston 106, and the piston 106 is dropped into the hole, so that the lower end of the piston 106 hits the inner surface of the coating member 107 and is slightly depressed. At the time of coating, the piston 106 is pushed up in the direction of the arrow through the coating member 107 of the coating section (coating head) 110 as shown in FIG. 3 (b), and the coating liquid is discharged from the gap formed between the piston 106 and the tapered hole 105. 102 oozes out. When not applied, the piston 106 descends due to the weight of the piston 106, and there is no gap with the tapered hole 105, and the exudation of the liquid stops.

Further, an internal member 121 is provided inside the coating section (coating head) 110, and the piston 106 is opened as described above as shown in FIG. The coating liquid 102 is temporarily absorbed by the internal member 121 to further reliably prevent the liquid dripping. And
The bleeding amount of the coating liquid can be variously adjusted depending on the taper angle of the piston and the number of pistons. The material of the inner member 121 is preferably a porous material such as sponge, a fibrous material such as cotton and non-woven fabric, and a fibrous woven fabric such as woven cloth.

However, when the card 11 as the object to be coated comes into contact with and pushes up the coating member 107, the card 11 as the object to be coated moves in the traveling direction if the coating is carried out while the bulge due to the protrusion at the lower end of the piston 106 is received. You will get uneven coating on the vertical streaks in the middle. This is prevented by a bar 108 or a net integrally provided on the lower end of the piston 106, if possible, as shown in the side sectional view of FIG. 4, whereby the coating member 107 strongly hits only the central portion. Since there is no such problem, the above-mentioned factors causing vertical stripes are eliminated, and good application becomes possible.

As another means, as shown in the side sectional view of FIG. 5, a resistor for contacting the upper part of the coating member 107 and for balancing the surface tension when the coating liquid 102 oozes out. By adding 125, it is of course possible to eliminate the concern about vertical streaks and to eliminate the liquid leakage phenomenon.

Further, the on-demand supply of the coating liquid 102 from the coating liquid tank 101 is carried out by the piston 106 as described above, but there is only one supply hole by the piston, and if it is left as it is, it is straight to the center. There is a possibility that a large amount of liquid will flow into the central portion and thin coating will be applied to the peripheral portion.

In order to prevent this, as shown in the side sectional view of FIG. 6A and the plan view of the partition wall 103 of FIG. 6B, the slit groove 112 is provided in the width direction from the tapered hole 105. Since the slit has a very narrow width and the liquid tends to spread to the periphery due to the capillary phenomenon, it becomes possible to achieve the uniformity of the distribution of the coating liquid in the width direction.

Similarly, in order to improve the uniformity of the distribution of the coating liquid in the width direction, the coating portion (coating head) 110 shown in FIG.
It has been confirmed that the diffusion plate 114 as shown in the plan view of FIG. 7B is arranged as shown in the side sectional view of FIG.

Further, the piston 1 is used to supply the coating liquid from the coating liquid tank (coating liquid reservoir) 101 to the coating portion (coating head) 110.
In addition to step 06, an electric solenoid valve may be used, or the valve may be opened / closed by a mechanical cam drive, and a method of quantitatively supplying the liquid feeding tube with a rotary pump may be used.

As the coating member, a porous material such as sponge, fibrous material such as felt, cotton, non-woven fabric, velvet called velvet or suede, and fibrous woven fabric such as woven cloth are used. The situation is favorable. That is, uniform coating is possible, the coating finish is stable, and the appearance is good.

However, this is possible when the card 11 does not have a warp or a twist, and the warp and the twist of the card are large and small and are always attached. for that reason,
When a card with such a loss is transported,
As shown in (a), the card 11 on the conveyor belt 25 hits the wall 110c of the coating section (coating head) 110 and is left as it is or is tilted so that only a part of it enters under the coating section. This will cause the card to jam and damage it. Therefore conveyor belt 25 and cards
Although it is possible to take a procedure to exert a strong suction between 11 and and press it, the device becomes complicated and troublesome, and even if you do such a thing, you can not support it and such a jam phenomenon remains. It may happen. The presser roller 170 is provided to prevent this from happening, so that as shown in FIGS. It becomes possible to go.

The above is the example of the embodiment of claim 1 using the apparatus of the first embodiment. Further, the pressing roller 170 is retracted upward before the card 11 comes in, and is lowered at a timing immediately before the leading end of the card 11 enters the coating section to hold down the card 11 and properly regulate the leading end. According to the fifth embodiment of the present invention, the pressing roller 170 is released when the tip of the card 11 is completely below the coating portion.

Next, the respective embodiments of claims 1 to 4 will be described with reference to the apparatus of the second embodiment shown in the side views of FIGS. 9, 10, 11 and 12.

The coating apparatus of the second embodiment is such that a card 11 as an object to be coated is fed to the coating section 200 of a roll coating type coating apparatus.

A coating section 200 of a roll coating type coating apparatus receives a coating solution vat 201 containing a coating solution, a pickup roll 203 for pumping the coating solution and an appropriate amount of the pumped coating solution from the pickup roll 203, and applies the coating solution. Transfer roll 205 for transferring to roll 210 and the coating roll
It is composed of a back roll 220 having a pressing relationship with 210.

As shown in FIG. 9, the transporting means for the card 11 to the coating section 200 is composed of an endless transport belt 225 wound around a roller 221 and a pressing roller 270 that presses the endless transport belt 225. It is sent between the coating roll 210 and the back roll 220, and card surface coating is performed.

This is an example of the embodiment of claim 1 using the apparatus of the second embodiment.

Further, the coating section 200 in the apparatus of the second embodiment
As shown in FIG. 10, another embodiment of the conveying means of the card 11 to the card is provided with an endless nip belt 253 wound around a driving roller 251 and a driven roller 252 on a conveying belt 225. The card 11 is sandwiched between the two belts, and the coating roll 210 and the back roll 22 of the coating unit 200 are held.
It is sent during 0.

This is an example of the embodiment of claim 2.

Further, the coating section 200 in the apparatus of the second embodiment
As shown in FIG. 11, another embodiment of the means for conveying the card 11 to the card is that it is fed by a gate roller composed of a roller pair of a gate roller 261 and a gate roller 262. This is an example of the embodiment of claim 3.

Further, the coating section 200 in the apparatus of the second embodiment
As shown in FIG. 12, another embodiment of the means for conveying the card 11 to and from the robot hand 281, 282 nip and move the card 11 and feed the tip of the card to the coating roll 210, as well as nipping the robot hand. Is to be released.

This is an example of the embodiment of claim 4.

Next, the pressing roller 170 shown in FIGS. 1, 8 (b) and 8 (c) and the pressing roller 270 shown in FIG. 9 hold the card 11 between it and the conveyor 25 or 225, and The tip is sent to the coating section (coating head) 110 or the coating roll 210 and the nipping is released, and after the coating is started, another force is applied mainly by the conveyance force between the coating head 110 or the coating roller 210 and the card 11. I tried to avoid force and control. This is an example of the embodiment of claim 5.

This is because if the pressing roller is not released from the holding state, a step may be formed in the coating film at the time when the rear end of the card comes off the pressing roller during coating, and a uniform coating film may not be obtained.

Similarly, the nip belt 25 shown in FIGS.
Either card 3 or gate rollers 261 or 262 is used for card 11
At the same time that the front end of the sheet is sent to the coating roll 210, it is allowed to escape upward or downward so that the main body of the conveying force is transferred to the coating section side.

This is an example of the embodiment of claims 6 and 7.

[0059]

According to the present invention, the application of the ultraviolet curable resin to the surface of a card as an object to be coated causes a conveyance failure even if the card is warped or twisted and jams at the coating portion. Without causing bending or curling, causing thick film on the back edge of the card, wrapping the coating solution around the back surface, and contaminating the conveyor belt and the transport path including the back roll of the coating section with the coating solution. It will be eliminated.

[Brief description of drawings]

FIG. 1 is a schematic side view of the overall configuration of an embodiment of the present invention.

FIG. 2 is a side sectional view of an example of coating means.

FIG. 3 is a side sectional view showing an example of coating means.

FIG. 4 is a partial side sectional view showing an example of coating means.

FIG. 5 is a partial side sectional view showing an example of coating means.

FIG. 6 is a view showing a slit groove of a coating unit.

FIG. 7 is a diagram showing a diffusion plate of a coating unit.

FIG. 8 is a relationship behavior diagram of a card and a pressing roller on a coating unit (coating head), a conveyor belt.

FIG. 9 is a side view of an example of a card feeding mechanism to a roll coating type coating section.

FIG. 10 is a side view of an example in which a nip belt feeds a card to a roll coating type coating unit.

FIG. 11 is a side view of an example in which a card is fed into a roll coating type coating unit by a gate roller.

FIG. 12 is a side view of an example in which a card is fed into a roll coating type coating unit by a robot hand.

FIG. 13 is a contact behavior diagram of the application roller and the front end of the card.

FIG. 14 is a contact behavior diagram between the coating head and the card tip.

[Explanation of symbols]

 11 Card 25 Conveyor belt 30 Processing section 110 Coating section (coating head) 170, 270 Presser roller 200 Coating section 210 Coating roll 220 Back roll 225 Conveying belt 261, 262 Gate roller 281, 282 Robot hand

Claims (7)

[Claims] 1. In a coating device for forming a hard coat as a card surface protective layer on a card as an object to be coated which is conveyed on a conveyor belt, a card as the object to be coated is provided by a pressing roller provided immediately before the coating section. Is applied while nipping between the card and the conveyor belt, and a card surface protective layer coating apparatus. 2. A card as an object to be coated is applied while nipping the card as the object to be coated with a nip belt provided immediately before a coating section in a coating device for forming a hard coat as a card surface protection layer. An apparatus for coating a card surface protective layer, which is characterized in that 3. In a coating device for forming a hard coat as a card surface protection layer on a card as an object to be coated, the card as the object to be coated is nipped and coated by a gate roller provided immediately before the coating section. An apparatus for coating a card surface protective layer, which is characterized by: 4. A card, wherein in a coating device for forming a hard coat as a card surface protection layer on a card as an object to be coated, the card is sandwiched by a robot hand and conveyed to a coating section. Coating device for surface protection layer. 5. In a coating device for forming a hard coat as a card surface protective layer on a card as an object to be coated which is conveyed on a conveyor belt, a card as the object to be coated is provided by a pressing roller provided immediately before the coating section. Is conveyed while nipping it between the conveyor belt and the card, and at the same time when the card comes into contact with the coating section, the nip is released to apply the card surface protective layer. 6. In a coating device for forming a hard coat as a card surface protection layer on a card as an object to be coated, the card as the object to be coated is conveyed while being nipped by a nip belt provided immediately before the coating section. A card surface protective layer coating apparatus, wherein the nip is released at the same time when the card is contacted with the coating section. 7. In a coating device for forming a hard coat as a card surface protection layer on a card as an object to be coated, a card as an object to be coated is conveyed while being nipped by a gate roller provided immediately before a coating section, A coating device for a card surface protective layer, characterized in that the nip is released at the same time when the coating portion and the card are brought into contact with each other to perform coating.