JP3225282B2 - Liquid transfer position setting device for transfer film in hydraulic transfer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of swelling a transfer film having an ink surface on which transfer ink has been applied in advance in a processing chamber of a transfer tank, and then controlling the pressure of the liquid stored in the processing chamber. The present invention relates to an apparatus which is attached to a hydraulic transfer device for transferring a transfer ink to an object to be transferred, and which makes a liquid contact position of a supplied transfer film constant.

[0002]

2. Description of the Related Art A transfer object having a complicated curved surface or the like has a grain,
As a technique for printing a pattern such as marble, there is a technique called hydraulic transfer. When implementing this method, hydraulic transfer is performed in which the transfer film is fed to the surface of the processing chamber storing the transfer liquid to swell the transfer film, and the transfer is performed by pressing the transfer object against the ink surface of the transfer film. A device is used. This type of hydraulic transfer device is designed to perform a flow-like operation by forming a flow at a constant flow rate in the transfer liquid in a transfer tank and transferring the transfer film on this flow. There is. In forming a flow in the transfer liquid, a pump drive or a mechanism utilizing a liquid level difference caused by a weir is employed. Even when the pump is driven, a weir may be provided for the purpose of stabilizing the flow of the formed transfer liquid (smoothing the liquid surface). In addition, this type of hydraulic transfer device assists in the extension and transfer of the transfer film supplied to the transfer tank, prevents the transfer film from wrinkling, deforms and distorts the transfer pattern printed on the transfer film. A blower is provided so as not to cause the airflow.

[0003]

However, in the case of the above-mentioned hydraulic transfer apparatus, the height of the weir is fixed, and the flow rate of the transfer liquid from the liquid supply chamber to the processing chamber is substantially uniform. On the other hand, the properties of the transfer film may be slightly different, or the wind may be changed in the blower, the wind direction may be changed, so that the transfer film may be excessively fed in the traveling direction, or vice versa. In some cases, the transfer position of the transfer film may vary, and the swelling start point of the transfer film may fluctuate. Such a change in the liquid landing position will change the optimum transfer position at which the transfer film is appropriately swollen,
If the transfer is to be performed at the optimum transfer position, it is necessary to correct the position of the transfer object immersed in the liquid surface each time. Becomes

[0004] In this case, it is conceivable to adjust the height of the weir to cope with the above-mentioned change and the like. However, the balance between the transfer speed of the transfer liquid and the wind force of the blower is adjusted each time. This is quite difficult, and eventually causes wrinkles or the like on the transfer film, or even leads to a situation where the discharge of slag is insufficient. The present invention has been made based on such circumstances, and it is an object of the present invention to prevent variations in a liquid landing position of a transfer film by a relatively simple structure and to stably obtain a good transfer finish. It is.

[0005]

That is, a liquid transfer position setting device for a transfer film in a hydraulic transfer device according to the first invention of the present application is a liquid transfer device having a weir provided at least in a part of a transfer tank. In a device for fixing the liquid contact position of the transfer film attached thereto, the device is at least a supply side weir provided on the supply side of the transfer film, and is located diagonally above the supply side weir, the supply side weir And a blow-out body having a blow-out port arranged so as to blow out the pressurized air toward a contact portion with the liquid level in the processing chamber or slightly upward thereof.

In the liquid transfer apparatus according to the second invention of the present application, the transfer liquid setting position setting device includes, in addition to the above requirements, the supply side weir having a height that allows the height of the weir to be changed. It is characterized in that an adjusting mechanism is provided.

Further, in the hydraulic transfer apparatus according to the third aspect of the present invention, the liquid transfer position setting apparatus for the transfer film, in addition to the above-described requirements, hangs from the transfer film feeding apparatus above the supply side dam. A backing plate which abuts on the back surface of the transfer film and which complements the balance between the pressure of the blowing air from the blowing body and the pressure of the transfer liquid flowing from the supply side weir is provided so as to protrude freely. It consists of The present invention aims to achieve the above object.

[0008]

According to the first aspect of the present invention, the transfer film is balanced in the vicinity of the contact portion between the supply-side weir and the liquid level in the processing chamber by the blowing of the pressure from the blower by providing the blower. As the liquid transfer position of the transfer film becomes constant, the optimum transfer position is prevented from fluctuating, and a stable and excellent transfer finish can be obtained.

According to the second aspect of the present invention, by providing a height adjusting mechanism on the supply-side weir, the flow rate of the transfer liquid from the liquid supply chamber to the processing chamber can be changed. It is possible to prevent the transfer film from excessively biasing toward the weir side due to the forced air blowing from the body, and it is possible to set an optimum liquid landing position, so that a good transfer finish can be obtained.

Further, according to the third aspect of the present invention, since the back support plate is provided above the supply-side weir, the flow of the transfer liquid from the liquid supply chamber to the processing chamber is not hindered, and the back support is provided. By changing the projecting position of the plate, the balance between the conveying force accompanying the inflow of the transfer liquid and the push-back force due to the blowing air from the blowing body can be complemented at the projecting position of the backing plate. At this time, excess compressed air from the blowing body is received by the back plate located on the back side of the transfer film, and moves upward along the transfer film (or the back plate located on the back side). The transfer film is released forward along the transfer film fed from the lower part of the face plate toward the front in the traveling direction, thereby preventing the transfer film from bending toward the liquid supply chamber due to the excessive pressure air. For this reason, it is possible to set a more appropriate liquid landing position.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the illustrated embodiments. In FIG. 1, reference numeral 1 denotes a hydraulic transfer device. The hydraulic transfer device 1 includes a transfer tank 3, a transfer film supply device 4 that supplies a transfer film F to the transfer tank 3, and a transfer object transfer device 6 that transfers a transfer object 5 to the transfer tank 3. It is.

The transfer tank 3 has a processing chamber 11 and is divided into a liquid supply chamber 12 upstream of the processing chamber 11 via a supply weir 25 and a downstream side of the processing chamber 11 via a recovery weir 29. And a collection chamber 13. The transfer tank 3 includes the processing chamber 11, the liquid supply chamber 12, and the collection chamber 13 as a series, and the transfer liquid W is supplied from the liquid supply chamber 12 to the supply-side weir 2.
5 flows down to the processing chamber 11, flows down the recovery weir 29 and reaches the recovery chamber 13. The collection chamber 13 is provided with a circulation pipe 15 for returning the collected transfer liquid W toward the liquid supply chamber 12.

Although an embodiment in which a boiler 17 is provided in addition to the circulation pump 16 is shown in the circulation line 15, a heater for heating the transfer liquid W is provided in the liquid supply chamber 12 instead of the boiler 17. A configuration is also possible. In this embodiment, hot water is used as an example of the transfer liquid W in this embodiment, and the transfer liquid W whose temperature is refluxed from the collection chamber 13 is lowered by the boiler 17 or the heater to a predetermined temperature. This is for heating to a temperature and supplying it to the processing chamber 11 as warm water. Incidentally, in this example, warm water of about 30 ° C. was used.

The reason why the transfer liquid W is made of warm water in this manner is that the water temperature in winter is disliked exclusively, and it is not always necessary to use warm water in an environment or at a time when such a problem is not a problem. There is no. Further, the transfer liquid W plays a role of dissolving the carrier sheet of the transfer film F. Since water is generally used as the carrier sheet, water is used as described above. If a substance that reacts with and dissolves the liquid is used, the transfer liquid W naturally becomes the liquid.

In the liquid supply chamber 12, a suppression plate 26 for reducing the force of the transfer liquid W by the circulation pump 16 is provided to prevent the liquid level in the processing chamber 11 from waving and maintain the flatness. The hot water as the transfer liquid W supplied to the liquid supply chamber 12 flows over the supply-side weir 25 and flows down to the end of the processing chamber 11 on the liquid supply chamber 12 side. The supply-side weir 25 is installed on a partition wall 24 that separates the liquid supply chamber 12 from the processing chamber 11, and the height of the weir can be adjusted by a height adjustment mechanism. The liquid level in the chamber 12 is regulated.

As a height adjusting mechanism, a mechanism for simply screwing the supply side weir 25 as shown in FIG. 3 (a) so that the position thereof can be changed or as shown in FIG. 3 (b). A handle H is arranged on the side of the transfer tank 3 and the like, and by operating the handle H, the rotation of the output shaft extended from the handle H is rotated by a mechanism such as a bevel gear, a worm wheel, and a rack and pinion. In addition to a manual mechanism configured to convert the movement into a vertical movement, a power mechanism using a cylinder C as shown in FIG. 3C and a ball screw B as shown in FIG. Various mechanisms can be employed.

In this embodiment, the height of the supply weir 25 is set to be higher than the liquid level of the processing chamber 11 by 2 mm. This value can be changed as appropriate in consideration of the line speed, that is, the flow velocity of the transfer liquid W. When the height of the supply-side weir 25 is set, if the height is set too high, the transfer liquid W supplied from the liquid supply chamber 12 penetrates below the surface of the transfer liquid W in the processing chamber 11 and stagnates. Transfer film F
There is a danger of floating in the liquid landing area and causing pinhole-shaped transfer failure in the product after transfer. Conversely, supply side weir 25
If the height of the transfer film F is too low, the transfer film F bends toward the liquid supply chamber 12 due to the wind pressure of the blower from the blower 40 or a blower 31 described later, and the liquid landing position of the transfer film F changes. In some cases, the warped film is stuck on the inside and cannot be used, and there is even a risk of line stoppage. Therefore, it is necessary to set the height of the supply-side weir 25 within a range that does not cause these.

On the other hand, a partition wall 28 that separates the processing chamber 11 from the recovery chamber 13 has a collecting side that regulates the flow amount of the transfer liquid W from the processing chamber 11 to regulate the level of the liquid level in the processing chamber 11. Weir 2
In the present embodiment, the height of the recovery side weir 29 can be adjusted. In this embodiment, the height of the recovery weir 29 is a position lower by 5 mm than the liquid level of the processing chamber 11.

The height of the collecting-side weir 29 is set to an appropriate height as long as it does not hinder the discharge of the waste of the transfer film F and the transfer speed of the transfer liquid W in the processing chamber 11 is not extremely varied. Can be set to In addition, in connection with the difference in the role of these supply side weirs 25 and the recovery side weirs 29, in addition to the supply side weirs 25, it is necessary to adjust the balance with the pressure blowing air from the blow-off body 31, which will be described later. It is desirable that the height can be adjusted as described above. On the other hand, even if the collecting weir 29 is of a fixed type, there is not much trouble. Needless to say, this does not deny the provision of the height adjusting mechanism in the recovery side weir 29.
A mechanism capable of adjusting the height is adopted in the ninth embodiment.

A transfer film supply device 4 for supplying a transfer film F to the processing chamber 11 is provided near the transfer tank 3. The transfer film supply device 4 includes a rolled film roll 7, a roller coater 9, and a transport conveyor 10 for feeding the transfer film F to a required position in the processing chamber 11. This conveyor 10 corresponds to the transfer film feeding device of the present invention.

The transfer film F has a carrier sheet made of a water-soluble film made of, for example, gelatin, sodium alginate, polyvinyl alcohol resin or the like, and has a surface which can be transferred from the transfer film F swollen by the transfer liquid W. Various transfer patterns to be transferred to the transfer object 5 by the transfer ink containing the binder component are drawn and formed as ink surfaces.

The transfer film F pulled out from the film roll 7 is first transferred to a roller coater 9, where the ink surface of the transfer film F is applied to a mixture of a solvent component, a resin component, an extender pigment, or a thinner. An activator 8 consisting only of a solvent component is applied to activate the transfer ink. Thereafter, the activated transfer film F is sent onto the surface of the transfer liquid W in the processing chamber 11 via the transport conveyor 10. Of course, the activator 8 may be applied by, for example, sending the transfer film F onto the liquid surface of the transfer liquid W and then spray coating the liquid surface.

In this embodiment, the transport conveyor 10 is arranged so that the downstream end of the transport conveyor 10 is located immediately above the supply weir 25 as is apparent from the drawing. The transfer film F to be fed is installed so as to hang down along the supply weir 25 toward the processing chamber 11. Above the upstream portion of the transfer chamber 3 in the processing chamber 11, that is, obliquely above the supply-side weir 25, the air is blown at least toward the contact portion between the supply-side weir 25 and the liquid level in the processing chamber 11 Is provided with a blow-off body 31 in which a blow-out port 32 is arranged so as to blow out.

The blowing body 31 is, for example, a transfer film F
Is formed so as to extend in the width direction with a pipe slightly longer than the width, and a number of outlets 32 are formed in the length direction. Therefore, a uniform wind pressure is applied over the entire width of the front side of the transfer film F (in the apparatus of the embodiment, the pressure of the compressor is reduced by the pressure reducing valve, and the supply pressure to the blowing body 31 is 0.5 to 2).
kgf / cm ² ) to force the transfer film F to adhere to the surface of the transfer liquid W flowing down the supply side weir 25. In other words, the transfer film F is slightly pushed by the wind pressure over the supply side weir 25 to the liquid supply chamber 12 side, and the transfer film W slightly flows. However, since the transfer liquid W flows from the supply side weir 25 into the processing chamber 11, the transfer film F is pulled back. So that the liquid comes into balance just right there.

As shown in FIG. 4, the blowing member 31 may have a plurality of nozzles arranged in the width direction of the transfer film F, and the shape of the outlet 32 may be as shown in FIG. In addition to a simple circular hole, a slit shape as shown in FIG. A pressure feeding device 30 composed of an air compressor, a blower or the like is attached to such a blowing body 31 as shown in FIG.

A backing plate 33 can be provided above the supply-side weir 25 along the supply-side weir 25 so as to close the gap with the conveyor 10. This back plate 3
3 is able to move forward and backward by the slide mechanism,
The protruding position can be adjusted. When the back support plate 33 is provided, the supply side weir 25 and the supply side weir 25 are processed so that the outlet 32 of the blowing body 31 faces the contact surface of the back support plate 33 with the transfer film F as shown in FIG. Room 11
If the back plate 33 is not provided, the outlet 32 is arranged so as to face the contact portion.

The transfer film F, which has been accurately fed to the upstream end of the processing chamber 11 and has landed thereon, swells and flows along with the flow of the transfer liquid W in the processing chamber 11 to be further conveyed to the chain conveyor. The transfer roller 18 is transferred to the transfer portion T on the downstream side. The transfer film F that has reached the transfer portion T is in an appropriately swollen state, and
The transfer object 5 is pressed against the ink surface on the surface of the transfer film F to perform transfer.

At this time, since the liquid landing position of the transfer film F is constant as described above, the swelling state of the transfer film F is uniform, and uniform and good transfer without variation can be achieved. The transferred object 5 thus transferred is thereafter removed from the transferred object transport device 6, and the transfer operation is completed.

[0029]

As described above, according to the first aspect of the present invention, the transfer film F is supplied from the supply side weir 25 and the processing chamber 11 by the blowing air from the blower 31 because the blower 31 is provided. The liquid can be deposited in a balanced manner in the vicinity of the contact area with the liquid surface, and the liquid landing position on the transfer film is constant, so that the optimal transfer position is prevented from fluctuating, and stable and stable transfer is achieved. Finish can be obtained.

According to the second aspect of the present invention, by providing a height adjusting mechanism on the supply side weir 25, the flow rate of the transfer liquid W from the liquid supply chamber 12 to the processing chamber 11 can be changed. It is possible to prevent the transfer film F from excessively biasing toward the supply-side weir 25 due to the compressed air from the blow-off body 31, and to set an optimal liquid-contact position, so that good transfer can be achieved. Finish can be obtained.

Furthermore, according to the third aspect of the present invention, the back support plate 33 is provided above the supply side weir 25, so that the flow of the transfer liquid from the liquid supply chamber 12 to the processing chamber 11 can be prevented. In addition, by changing the projecting position of the backing plate, the balance between the conveying force accompanying the inflow of the transfer liquid and the pushing-back force due to the blowing air from the blowing body can be complemented at the projecting position of the backing plate. At this time, excess compressed air from the blowing body is received by the back plate located on the back side of the transfer film, and moves upward along the transfer film (or the back plate located on the back side). The transfer film is released forward along the transfer film fed from the lower part of the face plate toward the front in the traveling direction, thereby preventing the transfer film from bending toward the liquid supply chamber due to the excessive pressure air. For this reason, it is possible to set a more appropriate liquid landing position.

[Brief description of the drawings]

FIG. 1 is a skeletal vertical sectional side view showing a hydraulic transfer apparatus to which a transfer film landing position setting apparatus of the present invention is applied.

FIG. 2 is an enlarged longitudinal side view showing the vicinity of a supply-side weir.

FIG. 3 is a perspective view showing various embodiments of a height adjusting mechanism.

FIG. 4 is a perspective view showing another embodiment of the blowing body.

FIG. 5 is a perspective view showing two embodiments of an outlet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hydraulic transfer apparatus 3 Transfer tank 4 Transfer film supply apparatus 5 Transfer object 6 Transfer object transport apparatus 7 Film roll 8 Activator 9 Roller coater 10 Transport conveyor (transfer film feed apparatus) 11 Processing chamber 12 Liquid supply chamber 13 Recovery Chamber 15 Circulation line 16 Circulation pump 17 Boiler 18 Chain conveyor 24 Partition wall 25 Supply-side weir 26 Suppression plate 28 Partition wall 29 Recovery-side weir 30 Pressure-feeding device 31 Blow-off body 32 Blow-off port 33 Backing plate 40 Blower B Ball screw C cylinder F Transfer film H Handle T Transfer part W Transfer solution

Continuation of the front page (56) References JP-A-4-122267 (JP, A) JP-A-5-84886 (JP, A) JP-A-54-26108 (JP, A) JP-A-61-35839 (JP) , U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B65C 9/00-9/22 B41F 16/00 B44C 1/165

Claims (3)

(57) [Claims] An apparatus for fixing a liquid transfer position of a transfer film attached to a hydraulic transfer apparatus having a weir provided at least in a part of a transfer tank, wherein the apparatus has at least a transfer film supply side. A supply-side weir provided and an outlet arranged so as to be obliquely above the supply-side weir and to provide a pressure blown air toward a contact portion between the supply-side weir and the liquid level in the processing chamber or slightly upward thereof. A liquid transfer position setting device for a transfer film in a hydraulic transfer device, comprising a blowing body. 2. The liquid transfer apparatus according to claim 1, wherein the supply-side weir is provided with a height adjusting mechanism capable of changing the height of the weir. Position setting device. 3. Above the supply-side weir, both the pressure blowing air from the blowing body and the transfer liquid flowing from the supply-side weir are in contact with the back surface of the transfer film hanging from the transfer film feeding device. 3. A back plate for complementing the balance of the pressure is provided so as to be freely protrudable.
An apparatus for setting a liquid landing position on a transfer film in the hydraulic transfer apparatus according to the above.