JPS62236740A - Transfer apparatus - Google Patents

Abstract

PURPOSE:To provide a relatively compact transfer apparatus having no ignition possibility even if an under coating means is provided close to a dryer and equipped with under coating, drying and transfer functions, by applying a coating agent only to the necessary part of a body to be transferred using a pad printing machine as the under coating means. CONSTITUTION:A body to be transferred placed on fixing jigs 3a is stopped at the position of an under coating means 4 by the rotation of an index table 2 to be subjected to an under coating and the next body to be transferred is placed on the next fixing jig 3b. As the under coating means 4, a pad printing machine being an intaglio printing offset printing system capable of performing partial printing and easily regulating the coating quantity of under coat is used. Further, the body to be transferred passes a drying part 5 by the rotation of the index table 2 to dry the coating agent and the index table 2 is once stopped. At this time, the body to be transferred placed on the fixing jig 3b is applied with an under coating by the under coating means 4 and a new body to be transferred is mounted on a fixing jig 3c. At the time of transfer processing, a transfer foil 8 is fed at the same moving speed as the index table 2 and contacted with the body to be transferred under pressure by a heating roll 7 to perform transfer processing.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a transfer device that performs thermal transfer onto the surface of a plastic product, a wooden product, or the like.

<Conventional technology> Conventionally, when heat transfer is performed on the surface of plastic products, wooden products, etc., there are some products that can be directly heat-transferred as is, but the surface may have minute irregularities, lack of surface hardness, etc.
If there is poor adhesion, apply liquid resin (
A method of applying a coating material (hereinafter simply referred to as a coating agent) to a transferred image and drying it is followed by thermal transfer. As this undercoating means, various methods such as spray coating, gravure coating, and dipping are used depending on the shape of the object to be transferred.

<Problems to be Solved by the Invention> However, since a large amount of flammable solvent is used in the coating agent, these undercoating methods use a heat source (infrared heater or cartridge heater) to perform thermal transfer. etc.) may cause a fire.

To prevent this from igniting, the undercoat machine and dryer must be separated, and since the amount of coating agent applied is large, it takes time to dry, which makes the dryer larger and the entire transfer device larger. There is a problem with this.

Another problem with conventional undercoat machines is that it is difficult to apply the undercoat only to the required portions of the transfer target.

Means for Solving the Problems> The present invention has been made to solve the above problems, and includes a transport means for intermittently transporting an object to be transferred, and a material to be transported by the transport means. A transfer device comprising an undercoating means for applying an undercoat to a transfer body, a drying section for drying the undercoat, and a transfer means for supplying a transfer sheet and performing transfer processing by heating and pressurizing, The transfer device is characterized in that the undercoating means is a pad printing machine.

Effect> The transfer device of the present invention intermittently transports the object to be transferred by the transfer means, so that the object to be transferred placed while the transfer means is stopped is transferred and stopped at the pad printing machine. Then, a uniform and stable primer coat is applied only to the necessary areas.

Then, during the next feeding of the transfer means, the undercoat coat is dried in the drying section (after which it is temporarily stopped), and transfer processing is performed during the next feeding, after which the transfer means is stopped and the transferred The body is expelled.

During this time, at each stop of the transport means, the objects to be transferred are sequentially placed on the transport means, and these objects to be transferred are subsequently subjected to undercoating, drying, transfer processing, and ejection in the same manner as the intermittent feeding of the transport means. This is done sequentially and efficiently.

<Example> An embodiment of the present invention will be described below with reference to the drawings.

As shown in Fig. 1, (1) in the figure is a transport means for transporting the object to be transferred, and this transport means (1) has a rotatable index table (2) with a disc facing down. Fixing jig C3a for fixing the transferred object at the top four locations
), edb), (:3c), and (3d) are provided. The object to be transferred is placed on these fixing jigs while the index table (2) is stopped.

The object to be transferred placed on the fixing jig (3a) is transferred to the position of the undercoat means (4) by the rotation of the index tape # (2), and is coated with the undercoat while the index table (2) is stopped. Ru. At this time, use the following fixing jig C
The next transfer target is placed on ab). The undercoating means (4) uses a pad printing machine which is an intaglio offset printing method that allows partial printing and easy adjustment of the amount of undercoat applied. In this method, the coating agent on the intaglio plate is transferred to a rubber pad, and the coating agent is applied by pressing it onto the object to be transferred. By adjusting it, you can freely set the pattern and position of application. In addition, the depth of the plate was varied from 5 to 100 μm, and the amount of coating was adjusted depending on the concentration of the coating agent used, and the amount of coating was adjusted to 0.0 μm in the dry state. ]~3V
Apply m2.

Further, as the index table (2) rotates, the transferred object passes through the drying section (5), and the coating agent is dried.

As mentioned above, the undercoating means (4) used in the present invention includes:
Since pad printing, an intaglio offset method, is used, the amount of coating is uniform and stable, and compared to other spray or roll coating methods, the coating is thinner and does not require a special dryer, making it easier to A suitable drying section (5) in the transfer path of
If necessary, heating may be performed using hot air, an infrared heater, etc. After this, index table (2
) will temporarily stop.

At this time, the object to be transferred placed on the fixing jig (3t)) is undercoated by the undercoating means (4), and a new object to be transferred is placed on the fixing jig (c3C).

In this manner, the transfer object on which the undercoat has dried is transferred while being moved by the rotation of the index table (2).

There are two types of transfer processing: the flat pressure method, in which the heating plate is flat, and the roll method, in which the heating plate is cylindrical.The roll method allows direct heating of the pressure surface of the transfer, and allows the transfer temperature to be set higher. In addition, the roll method is used because the product is placed on an index table (2) and has a structure that allows transfer to be performed while moving in front of a fixed heating roll.

In other words, M is placed on the outer periphery of the index table (2).
, n! , ss 1Eil 醗I - Iki A position signature V tr
* The IF bias V is shaped to move in a direction perpendicular to the tangent to the rotation of the index table (2) depending on the position and shape of the product, and a transfer foil (8) is placed between the heating roll (7) and the product. During the transfer process, the transfer foil (8) is fed at the same speed as the index table (2), and the transfer process is performed by pressing the heating roll (with force) onto the object to be transferred.

The products that have been transferred are then placed on the index table (
2) When the process stops, the product is discharged and the series of operations is completed.

At this time, the transfer object placed on the fixing jig (3b) has the undercoat dried and is in the fc state, and the transfer object placed on the fixation jig c3C) has been undercoated with a pad printing machine. Then, a new transfer target is placed on the fixing jig (3d). Thereafter, such operations are repeated.

This will be explained in more detail below.

Here, as shown in FIG. 2, a device that uses an eight-divided index table (9) and can perform transfer processing on both the front and back sides with one device will be described.

It should be noted that the description will be made regarding one transfer target, with the division positions being A-H.

At A, while the index table (9) is stopped, the product is placed in the fixing jig (1).The fixing jig (101) rotates while holding the top and bottom of the product while applying and holding the parts other than the transfer surface.

When moving to the next step B, after passing through a static eliminator αυ, a dust removal roll (121) equipped with a suction device removes dust from both sides of the product.

When stopped at B, undercoat is applied by undercoat means u3.

As shown in FIG. 3A, the undercoating means αJ is a pad printing machine consisting of a cylinder (19), a plate (αe), and a doctor a'r.
6) Place the coating agent on the plate and scrape off the coating agent on the plate using a doctor αη, leaving the coating agent only on the intaglio portion. (Fig. 3 B) Press the pad (151) against the plate with only the handle remaining to transfer the coating agent to the pad (151 (Fig. 3 C, L)), then rotate the printing machine #; (Fig. 3E) Press the material onto the transfer target (Fig. 3F) and apply the coating agent on the pad (151).

The coating material applied when the index table (9) moves from B to C and while it is stopped at C is dried. If the coating film is several microns thick and a solvent with good drying properties is used, drying is not necessary. In the next step, the transfer process, the coated surface is heated and foams, and if this occurs, the drying will be insufficient, but otherwise the stability of the transfer will be improved by not allowing it to dry completely, and the physical properties of the transferred object will be improved. Also good.

This is thought to be because when the residual ink solvent remains on the coated surface, the adhesion and tackiness of the coated surface is improved during transfer processing compared to a completely dried coating film.

In fact, if the transfer target is heated during the drying process, it has the same effect as raising the temperature of the transfer machine's heating plate, leading to improved transfer stability and physical properties of the transfer target, but heating conditions If the temperature is increased too much, the residual solvent will decrease, so the heating conditions should be set in consideration of drying. As a dryer, heating is performed using hot air or an infrared heater. Drying is performed in C.

Transfer processing is performed when the product moves from C to D.

The transfer processing section (in FIG. 2) consists of a cylindrical heating roll (201) heated by an infrared heater 9, a pressure cylinder (21) for applying transfer pressure, and a transfer foil.
A heating roll (201) waits on the locus of movement of the object to be transferred, and transfer pressure is applied by a pressure machine via a transfer foil 4 between it and the object to perform the transfer.

At D, the front and back sides of the product are changed so that the transfer surface at CD is on the inside, and at DE, the product is cooled.

Below, in the same way, undercoat the back side with E and E-F.
The coating agent is dried at , the transfer processing is performed at FG,
The transfer surface is cooled at GH.

The product made in step H is discharged.

<Effects of the Invention> By using a pad printing machine as the undercoating means, the transfer device of the present invention can apply the coating agent only to the necessary parts of the transfer target, so the undercoating means and the dryer can be placed close to each other. There is no risk of flammability even if

Therefore, it is possible to provide a relatively compact transfer device having undercoating, drying, and transfer functions.

Furthermore, since the transfer device of the present invention intermittently transports the object to be transferred by the transfer means, the object to be transferred is taken in and taken out and the undercoat is applied while the transfer means is stopped, and the undercoat is dried and transferred while the transfer means is stopped. It can be processed and has excellent workability and productivity.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view showing one embodiment of the transfer device of the present invention, FIG. 2 is a schematic plan view showing another embodiment, and FIG.
The figure is an explanatory diagram illustrating the undercoating process.

Claims (1)

[Claims] 1) A transfer means for intermittently transporting the transfer object, an undercoat means for applying an undercoat to the transfer object transferred by the transfer means, a drying section for drying the undercoat, and a transfer sheet. What is claimed is: 1. A transfer device comprising a transfer means for performing transfer processing by supplying, heating and applying pressure, wherein said undercoat means is a pad printing machine.