KR20060070469A - Thermal transfer press machine and thermal transfer press method - Google Patents

Abstract

The steam is circulated in the flow path 163 of the pair of temperature regulating plates 16 to heat the temperature regulating plate 16. The pair of temperature regulating plates 16 are provided with independent pressure regulators 21 for adjusting the temperature of the temperature regulating plate 16 by adjusting the pressure of steam.

Since the temperature of a pair of temperature control plate 16 can be controlled independently, the temperature of both surfaces of the base material 5 can be made equal, and the curvature of the base material 5 can be prevented. In addition, since the stamper 17 is brought into close contact with the substrate 5 at a predetermined pressure after the temperature adjusting plate 16 is heated to a predetermined temperature, the surface of the substrate 5 is reliably melted, and the uneven pattern is well transferred. can do.

Description

Heat Transfer Press Machine and Heat Transfer Press Method {HEAT TRANSFER PRESS MACHINE AND METHOD THEREOF}

1 is an overall view of a thermal transfer press machine according to one embodiment of the present invention.

2 is a partially enlarged view of a thermal transfer press machine according to one embodiment of the present invention.

3 is a top view of a thermal transfer fleece machine according to one embodiment of the present invention.

4 is a bottom view showing a temperature control plate according to an embodiment of the present invention.

5 is a side sectional view showing a temperature control plate according to an embodiment of the present invention.

Fig. 6 is a block diagram showing the thermal transfer press system according to one embodiment of the present invention.

7 is a flowchart showing a thermal transfer press method according to an embodiment of the present invention.

8 is a view showing a modification of the thermal transfer press system of the present invention.

9 is a top view showing a modification of the temperature control plate of the present invention.

The present invention relates to a thermal transfer press machine for transferring an uneven pattern to a substrate and a thermal transfer press method using the thermal transfer press machine.

As a method of manufacturing a light guide plate or the like having a fine concavo-convex pattern on the surface, a heat transfer press machine for transferring a concave-convex pattern of the stamper to a substrate by heating a stamper having a concave-convex pattern formed on the surface and pressing the substrate to a substrate such as a thermoplastic resin plate. (For example, Japanese Patent Laid-Open No. 2004-74769 (pages 8 to 13, FIG. 1)). In this heat transfer press machine, upper and lower molds are provided with heating plates for heating. By applying a current to these resistance heating plates, the resistance heating plates are heated to a predetermined temperature, and the stamper is heated.

By the way, in such a thermal transfer press machine, it is difficult to adjust the temperature on both sides of the base material when transferring the uneven pattern to the base material. That is, in the thermal transfer press machine, the surface of the substrate is melted and the concavo-convex pattern of the stamper is transferred to the substrate, so that if the temperatures on both sides of the substrate are different from each other, the substrate tends to bend. However, in the above-described thermal transfer press machine of Patent Document 1, the temperature is increased by the resistance heating plate. However, the specific temperature control is not disclosed at all. Therefore, the upper and lower temperatures of the substrate cannot be properly maintained. There is a problem that cannot prevent problems such as bending and transfer failure.

An object of the present invention is to provide a thermal transfer press machine and a thermal transfer press method capable of preventing warpage of a substrate and transferring a concave-convex pattern well.

The thermal transfer press machine of the present invention is a thermal transfer press machine for transferring an uneven pattern formed on the surface of a stamper on a surface of a substrate, and has a flow path through which a vapor can flow, and a temperature control plate and a flow path adjusted to a predetermined temperature by steam. A pressure regulating means for adjusting the pressure of the steam in the chamber, and the temperature regulating plate is provided on the slide side and the Boulster side of the thermal transfer press machine, and a stamper is installed on at least one side of the temperature regulating plate, The adjustment means are characterized in that they are provided independently of the temperature control plate.

According to the present invention, since the pressure regulating means is provided independently of the temperature regulating plate, the temperature regulating plate can be independently adjusted. Therefore, by appropriately adjusting the temperature of each temperature control plate, both surfaces of the substrate can be heated to a desired temperature, whereby problems such as warpage and poor transfer of the substrate can be eliminated, and a molded article obtained by transferring a good uneven pattern can be obtained. Therefore, in order to prevent bending of the substrate, it is preferable that the temperatures of the temperature control plates in contact with both sides of the substrate are equal to each other.

In order to adjust the temperature of a temperature control plate with steam, the fluid (steam) which flows in a flow path can be easily obtained by connecting a boiler, for example to a temperature control plate. In addition, since the temperature of the temperature control plate is adjusted by steam, the heat transfer rate is good, and the temperature control plate is heated in a short time. This shortens the cycle time of the thermal transfer press work. In addition, since the temperature of the temperature control plate is adjusted by steam, the temperature is regulated by the boiling point of steam, so that the temperature controllability when heating the temperature control plate is good.

When steam flows through the flow path of the temperature control plate, the pressure greatly changes due to the temperature change of the steam. In particular, depending on the temperature of the steam or the temperature of the temperature control plate, a part of the steam may condense into hot water, and the temperature control plate may be heated by the heat of condensation generated at this time. In this case, although the pressure of the steam in the flow path fluctuates, since the pressure adjusting means is provided independently, the temperature of the temperature control plates on the slide side and the bolster side is adjusted by adjusting the pressure of the steam. In particular, for example, in the thermal transfer press machine, the temperature regulating plate and its flow path are arranged substantially horizontally, and a part of the steam is condensed in the temperature adjusting step, so that the fluid in the flow path is abnormal between the steam and its condensate. In the case of flow by, the heat transfer may occur in the flow paths of the temperature control plates on the slide side and the bolster side. That is, there exists a possibility that temperature differs on both surfaces of a base material. According to the present invention, since the pressure regulators are provided on the slide side and the bolster side independently of the temperature regulating plates, the temperatures of these temperature regulating plates are adjusted independently, and the flow path due to the abnormality as described above is maintained. Even if it is, the temperature is adjusted appropriately.

Here, when the uneven pattern is formed only on one side of the substrate, the stamper may be attached only to one side of the temperature control plate. In addition, when the concave-convex pattern is formed on both sides of the substrate, the stamper is attached to both sides of the temperature control plate.

In the thermal transfer press machine of the present invention, the pressure adjusting means is preferably provided at the inlet side and the outlet side of the flow path of the temperature regulating plate.

According to the present invention, since the pressure adjusting means is provided on both the inlet side and the outlet side of the flow path, the pressure at both the inlet and the outlet of the flow path is appropriately adjusted to reliably and stably maintain the pressure of the steam in the flow path. Since it becomes adjustable, temperature adjustment is assuredly and stable. Moreover, since the pressure can be set at each of the inlet side and the outlet side by the pressure adjusting means, the flow rate can be adjusted even from the pressure difference, and the temperature adjustment is precisely performed even in the temperature raising process.

In the thermal transfer press machine of the present invention, it is preferable that water is circulated in the flow path of the temperature regulating plate, and flow rate adjusting means for adjusting the flow rate of the water in the flow path is provided independently of each other.

According to the present invention, since the flow rate adjusting means is provided independently on the temperature regulating plate, even when cooling the temperature regulating plate, the temperature of each temperature regulating plate can be adjusted independently, and more precise temperature adjustment is possible. This becomes possible, and problems, such as a curvature of a base material and a poor transfer, can be prevented more reliably.

In addition, since water is used as the cooling medium of the temperature control plate, the acquisition and handling thereof are simplified.

In addition, since ice is circulated in a flow path such as a flow path through which steam flows, more flow paths can be formed inside the temperature control plate, and heating and cooling of the temperature control plate become more efficient. Also in this case, since the fluid (vapor) used for heating and the fluid (water) used for cooling are the same, defects do not occur even when circulating and mixing in the same flow path, thereby simplifying the fluid switching and handling. The sex becomes good.

In the thermal transfer press machine of the present invention, the flow rate adjusting means is preferably provided at the inlet side and the outlet side of the flow path of the temperature regulating plate.

According to the present invention, since the flow rate adjusting means is provided at the inlet side outlet side of the flow path, the control of the flow rate becomes more accurate, and the temperature of the temperature control plate is adjusted more precisely.

The thermal transfer press method of the present invention is a thermal transfer press method for transferring the concave-convex pattern formed on the stamper surface to the substrate surface by using the thermal transfer press machine of the present invention described above, wherein the steam is circulated in the flow path of the temperature control plate and the temperature is adjusted. A heating step of heating the plate to a predetermined temperature, a pressing step of transferring the uneven pattern on the stamper surface to the substrate surface by pressing the stamper adjusted to the predetermined temperature in the heating step to the substrate surface, and And a cooling step of cooling the temperature control plate to a predetermined temperature by converting the fluid in the flow path from steam to water.

According to the present invention, since the thermal transfer press processing is performed by the above-described thermal transfer press machine, the same effect as that of the above-described thermal transfer press machine can be obtained, and the temperature of the temperature control plate is adjusted independently of each other. As a result, temperature adjustment becomes more accurate, and the occurrence of problems such as warpage of the substrate and poor transfer can be reliably prevented.

After the temperature of the temperature control plate is heated to a predetermined temperature by the heating step, a pressurization step of pressurizing the stamper against the substrate is carried out. In the pressurization step, the temperature necessary for transferring the uneven pattern is surely pressurized. In the process, the temperature required for transferring the uneven pattern is securely ensured, and the occurrence of problems such as poor transfer can be reliably prevented.

In the heating step, since the steam is used for heating the temperature control plate, the temperature control plate is heated in a short time, and the time for the heating step is shortened.

In addition, since the steam flows in the temperature control plate during the heating step and the temperature control plate is heated and adjusted to a predetermined temperature, the temperature of the temperature control plate is kept constant even during the pressurizing step, and the transfer step is performed reliably and stably. The uneven ethane is preferably transferred to the substrate. In addition, since the temperature decrease during the transfer process is prevented, the transfer time is shortened.

Since the fluid in the flow path is converted from steam to water during the pressurizing process, heating and cooling can be performed using the same flow path, and heating efficiency and cooling efficiency are improved.

EMBODIMENT OF THE INVENTION Hereinafter, one Embodiment of this invention is described based on drawing.

1, the whole view of the thermal transfer press machine 1 which concerns on one Embodiment of this invention is shown. In this embodiment, the thermal transfer press machine 1 manufactures the light guide plate used for the backlight of a liquid crystal display by thermally transferring the uneven | corrugated pattern to the base material 5 (refer FIG. 3). Here, the dimension of the light guide plate is, for example, about 0.5 to 8 mm in thickness, and may be considered to be 17 inches. Moreover, as the base material 5, the plate-shaped member comprised from thermoplastic resins, such as an acryl and polycarbonate, can be employ | adopted, for example.

As shown in FIG. 1, the thermal transfer press machine 1 has four apolites 11 (two of which are shown in FIG. 1) mounted upright on a bed 10, and an apolite 11. The crown 12 is installed on the upper surface of the, and the bolster 14 disposed on the bed 10 to face the slide 13 and the slide 13 is installed so as to be movable below the crown 12 The heat insulating material 15 attached to the lower side of the slide 13 and the upper part of the bolster 14, and the stamper attached to the temperature control plate 16 and the temperature control plate 16 which are respectively attached through this heat insulating material 15 ( 17) and the press vacuum device 18 which vacuums around the stamper 17, when the thermal transfer press machine 1 performs press work.

In the crown 12, a slide drive device 130 (see FIG. 6) for moving the slide 13 is built in. When the slide drive 13 moves by the slide drive device 130, The stampers 17 are spaced apart from each other, and the substrate 5 disposed between the stampers 17 is pressed. A plurality of guides 13A (four in this embodiment) are arranged in the vertical direction between the slide 13 and the bolster 14, and guide the shanghaidong of the slide 13. Moreover, the slide drive device 130 is provided with the servomotor or the hydraulic cylinder which can control the slide 13 in arbitrary positions.

2, the enlarged view of a part of the thermal transfer press machine 1 which concerns on this embodiment is shown. 3, the top view of the thermal transfer press machine 1 is shown. As shown in Fig. 2 and Fig. 3, the heat insulating material 15 has a predetermined thickness, and the heat insulating material 15 moves heat from the temperature control plate 16 to the slide 13 and the bolster 14. It is prevented.

The temperature control plate 16 is attached to the heat insulating material 15, respectively.

The temperature regulating plate 16 and the stampers 17 are arranged in two in the front-rear direction (the direction perpendicular to the ground of FIG. 1) of the thermal transfer press machine 1, that is, two light guide plates are manufactured for one press work. do.

4 shows a bottom view of the temperature regulating play 16. 5 is a side cross-sectional view of the temperature regulating plate 16. As shown in FIGS. 4 and 5, the temperature control plate 16 is made of iron, and has a plate portion 161 formed in a board shape and a connecting portion integrally formed on both sides of the plate portion 161 ( 162).

The plate portion 161 is about 10 mm thick and is formed in a substantially planar rectangular shape, and one surface thereof is in close contact with the heat insulating material 15. In the plate portion 161, a plurality of flow passages 163 for flowing the fluid are formed. The flow path 163 is formed at a pitch of about 7 mm parallel to each other along the longitudinal direction of the plate portion 161, and is formed penetrating from one end surface to the other end surface of the plate portion 161. The openings at the ends of these flow paths 163 are sealed by all the flags 163A (see FIG. 2) and the like. The flow path 163 is formed in the substantially circular cross section of about 5 mm in diameter, and the circular center is arrange | positioned in the substantially center of the thickness direction of the plate part 161. As shown in FIG. Since the cross-sectional shape of the flow path 163 is formed substantially circular, even when the flow path 163 is formed along the plane direction of the board | plate-shaped play part 161, it can manufacture easily. Moreover, since the flow path 163 is formed in the symmetry line which makes the centerline of the flow path 163 the center line with respect to the thickness direction of the plate part 161, the fluid flows through the flow path 163, and the temperature control plate 16 is opened. In the case of heating or cooling, expansion and contraction of the temperature regulating plate 16 is symmetrical with respect to the thickness direction. Therefore, the bending of the temperature control plate 16 can be prevented favorably, and generation | occurrence | production of the transfer defect of the uneven | corrugated pattern of the stamper 17 can be prevented reliably.

Here, the flow path 163 is a good heat transfer of the fluid flowing through the interior of the temperature control plate 16, the heating and / or cooling of the temperature control plate 16 and the stamper 17 attached thereto is rapid. It is preferable that the inner peripheral area is formed so as to be largely formed. Specifically, a method of increasing the cross sectional dimension of the flow path 163 and narrowing the pitch between the flow paths 163 may be considered. On the other hand, since the temperature regulating plate 16 is pressurized between the slit 13 and the bolster 14, it is necessary to ensure some strength. Therefore, it is preferable that the shape, dimension, pitch, etc. of the flow path 163 are set suitably in consideration of these conditions.

In the plan view of the plate portion 161 (state of FIG. 4), attachment holes 164 for attaching the temperature control plate 16 to the heat insulating material 15 are formed on both sides in the thickness direction. The attachment hole 164 is formed in the width direction both sides of the plate part 161 rather than the area | region in which the flow path 163 is formed, and is formed in total of six places by three places along the longitudinal direction of the plate part 161. As shown in FIG. The bolt 164A (refer FIG. 3) penetrates these attachment holes 164, and the temperature control plate 16 is affixed to the heat insulating material 15. As shown in FIG.

In addition, the attachment hole 164 is formed in a different arrangement with respect to each of the pair of temperature control plates 16. In a state in which the pair of temperature regulating plates 16 are disposed to face each other, the attachment holes 164 facing each other are formed at positions adjacent to each other along the longitudinal direction of the plate portion 161 without their center positions coincident with each other. . With this arrangement, when the pair of temperature regulating plates 16 are close to each other, the heads of the bolts 164A penetrating through the attachment holes 164 of the pair of temperature regulating plates 16 face each other. Interference with the head of the bolt 164A passing through the attachment hole 164 is prevented.

The diameter of the attachment hole 164 is slightly larger than that of the bolt 164A, and the plate 161 is stretched by flowing steam or water through the flow path 163 of the plate 161. This amount is allowed in one case. Therefore, occurrence of stress concentration or deformation due to expansion and contraction of the plate portion 161 is prevented.

In the vicinity of each attachment hole 164, a bolted-hole 165 of larger diameter than the attachment hole 164 is formed at a position adjacent to the longitudinal direction of the temperature control plate 16. When the pair of bolting holes 165 are close to each other, the head of the bolt 164A that passes through the attachment hole 164 of the opposing temperature adjusting plate 16 is a temperature adjusting plate ( It is formed so as not to interfere with 16). For example, when the thickness dimension of the base material 5 and the thickness dimension of the stamper 17 are small, when the temperature control plates 16 are close to each other at the time of press working, the bolts 164A of the temperature control plate 16 face each other. There is a possibility to interfere with the temperature adjusting plate 16. In this embodiment, since the bolt film hole 165 is formed, such a problem can be eliminated. Thereby, even if the thickness dimension of the base material 5 is small, thermal transfer press processing can be performed, and the versatility of the thermal transfer press machine 1 can be improved. Moreover, since the thickness dimension of the stamper 17 can be made small, the thermal conductivity of the stamper 17 can be made favorable, and the stamper 17 can be heated and cooled in a short time.

Here, the bolt hole 165 has a diameter dimension larger than that of the head of the bolt 164A, like the attachment hole 164, and by this shape, the temperature control plate 16 has a certain degree. Even if it expands and contracts in a dimension range, the extension is permissible.

The plate portion 161 is provided with a positioning hole 166 for positioning the temperature regulating plate 16 with respect to the heat insulating material 15. Two positioning holes 166 are provided at one end side of the plate portion 161 in the thickness direction, and these positioning holes 166 are disposed along the longitudinal direction of the plate portion 161. Positioning pins 14A (see FIG. 3) which protrude from the heat insulating material 15 or the slide 13 or the bolster 14 penetrate through these positioning holes 166. One positioning hole (first positioning hole) 166A of the positioning holes 166 is formed in a substantially circular shape, and its hole diameter is set to be substantially equal to the diameter dimension of the positioning pin 14A. . In addition, the other positioning holes (second positioning holes) 166B of the positioning holes 166 are formed in a substantially elliptical long hole shape, and the major axis thereof is formed by the center of one positioning hole 166A. It is arrange | positioned along the line which connected the center of the other positioning hole 166B, ie, it is arrange | positioned along the longitudinal direction of the plate part 161. As shown in FIG. In addition, the dimension of the axial direction of the positioning hole 166B is set to be substantially equal to the diameter dimension of the positioning pin 14A.

Accordingly, the temperature adjusting plate 16 is positioned in the thickness direction by the positioning holes 166A and the positioning holes 166B, and the position in the longitudinal direction is determined by the positioning holes 166A. In addition, when a position shift with the positioning pin 14A arises by expansion and contraction of a plate part 161, a processing error, etc., the position shift is absorbed by the elongate hole shape of the positioning hole 166B. Therefore, when the temperature regulating plate 16 expands and contracts with heat, the temperature regulating plate 16 expands and contracts in the longitudinal direction of the temperature regulating plate 16 along the positioning holes 166B, thereby preventing rotation of the temperature regulating plate 16. have. Therefore, rotation of the stamper 17 attached to the temperature control plate 16 can be prevented, and the relative position of the uneven | corrugated pattern with respect to the base material 5 can be prevented.

In addition, the major axis direction of the other positioning hole 166B is not limited to what is arrange | positioned along the line which connected the center of one positioning hole 166A and the center of the other positioning hole 166B, If it is substantially parallel to the said line, it may be arrange | positioned with some angle.

Here, the positioning holes 166 formed in the pair of temperature regulating plates 16 are provided on the long sides facing each other, but in one temperature regulating plate 16, the other temperature regulating plate 16 is provided. Positioning holes 166A are formed at positions opposite to the positioning holes 166A. Moreover, in one temperature control plate 16, the positioning hole 166B is formed in the position which the positioning hole 166B of the other temperature control plate 16 opposes, and is formed. With this arrangement, the position of the pair of temperature regulating plates 16 is regulated by the positioning holes 166A facing each other, and the movement direction thereof is regulated by the positioning holes 166B facing each other. For this reason, since the pair of temperature regulating plates 16 are installed so as to be able to stretch to some extent with respect to the positioning holes 166A, the pair of stampers 17 when the pair of temperature regulating plates 16 are stretched. The occurrence of relative position shift of) can be prevented. Here, when the major axis direction of the other positioning hole 166B has a predetermined angle with respect to the line which connected the center of one positioning hole 166A and the center of the other positioning hole 166B, the said It is preferable that the predetermined angles are set at substantially the same angles with respect to the pair of temperature regulating plates 16, that is, in this case, positioning in a plane view in a state where the pair of temperature regulating plates 16 are opposed to each other. The major axis direction of the hole 166B substantially coincides. In this case, since the stretching direction of the pair of temperature regulating plates 16 coincides, the relative positional shift of the pair of stampers 17 can be prevented.

In addition, in this embodiment, the positioning hole 166 is formed in the temperature control plate 16, and the positioning pin 14A is formed in the heat insulating material 15, the slide 13, or the bolster 14, Not limited to this, a positioning pin may be provided in the temperature regulating plate 16, and a positioning hole may be formed in the heat insulating material 15, the slide 13, or the bolster 14. That is, the positioning pin may be formed in one of the temperature control plate 16, the heat insulating material 15, the slide 13, or the bolster 14, and the positioning hole may be formed in the other.

The connecting portions 162 are formed at both ends in the longitudinal direction of the plate portion 161 along the width direction, and protrude in the thickness direction with respect to the plate portion 161. Accordingly, the temperature regulating plate 16 is formed in a substantially U-shaped side cross section as a whole. In the connecting portion 162, recesses 167 are formed in the width direction of the plate portion 161, respectively. The plurality of flow paths 163 communicate with each other by the concave portion 167. The plug 168 (refer FIG. 2) is attached to one of the two recesses 167, and the opening part of the recess 167 is sealed. The wall part 169 which divides the recessed part 167 is provided in the substantially center of the width direction of the other recessed part 167, The recessed part 167 is separated in two by this wall part 169. As shown in FIG. That is, half of the flow path 163 communicates with one recessed part 167 divided by the wall part 169, and the other half communicates with the other recessed part 167B.

The manifold 19 (refer FIG. 2 and FIG. 3) is connected to the connection part 162 in which the wall part 169 is provided. The manifold 19 includes a recess 191 having a shape corresponding to the recess 167 of the connecting portion 162 and a plurality of pipes 192 communicating with the recess 191 (six in this embodiment). Equipped. Half (three) of these pipes 192 communicate with one concave portion 167A divided by the wall portion 169, and the other half (three) communicate with the other concave portion 167B. . The pipe 192 penetrates through the press vacuum device 18 and protrudes to the outside, and is connected to the fluid supply device 30 (see FIG. 6) for supplying a fluid to the flow path 163 at the end thereof. have. In addition, in this embodiment, steam or water is employ | adopted as the fluid which distribute | circulates the flow path 163. As shown in FIG.

The pair of temperature control plates 16 of this structure are attached in a direction in which opposing connecting portions 162 are separated from each other. That is, the connecting portion 162 of the temperature control plate 16 attached to the slide 13 is disposed upward, and the connecting portion 162 of the temperature adjusting plate 16 attached to the bolster 14 is disposed downward. With this arrangement, even when the pair of temperature regulating plates 16 are close together, the opposing connecting portions 162 do not interfere.

Moreover, the longitudinal direction of the temperature control plate 16 is arrange | positioned along the direction (direction orthogonal to the paper surface of FIG. 1) orthogonal to the workpiece conveyance direction of the thermal transfer press machine 1. As shown in FIG. For this reason, even if the bolster 14 is moved to the left and right directions of the thermal transfer press machine 1, for example, when the shape is changed, the pipe 192 does not interfere with the apolite 11. The bolster 14 can be moved without removing the adjusting plate 16.

The stamper 17 is formed in a substantially rectangular shape, is made of nickel, and the thickness dimension is set to about 0.3 mm. The stamper 17 is attached to the temperature control plate 16 below the slide 13 and the temperature control plate 16 above the bolster 14, respectively, and the temperature control plates 16 of these stampers 17 facing each other. Are attached to each other), and fine uneven patterns are formed on the surfaces (surfaces) of these stampers 17 facing each other. Since the stamper 17 creates a light guide plate for backlight of the liquid crystal display in the present embodiment, the uneven pattern is a prism pattern. However, the uneven pattern is not limited to this, and may be arbitrarily employed according to the transferred pattern. For example, a dot pattern can be mentioned.

The stamper 17 is attached in close contact with the temperature control plate 16 by a suitable method such as tape or adsorption. Moreover, the size of the stamper 17 is smaller than the plate part 161 of the temperature control plate 16, and the stamper 17 is arrange | positioned in the inner part rather than the part in which the connection part 162 was provided in the temperature control plate 16. As shown in FIG. (Shown by dashed line in FIG. 3). According to this arrangement, since the stamper 17 is disposed on the plate portion 161 having a uniform thickness in the temperature regulating plate 16, the temperature distribution of the stamper 17 can also be made uniform. Thereby, the transfer performance of an uneven | corrugated pattern can be made favorable.

Here, the temperature control plate 16 and the stamper 17 are preferably made of a material close to the coefficient of thermal expansion, and more preferably made of the same material in order to prevent relative positional shifts from each other due to expansion and contraction. In this embodiment, the temperature regulating plate 16 is made of iron, and the stamper 17 is made of nickel, and is made of a combination of materials close to each other.

The press vacuum device 18 includes a pair of wall portions 181 protruding from the lower side of the slide 13 and an upper portion of the bolster 14, an O-ring 182 provided on the wall portion 181, and a wall portion. An air suction device (not shown) is provided to vacuum the area surrounded by 181. The wall portion 181 is disposed in a substantially rectangular annular shape so as to surround the outer circumference of the stamper 17, the temperature regulating plate 16, and the heat insulating material 15. The O-ring 182 is provided on the end surface which the pair of wall parts 181 oppose.

6, the block diagram of the thermal transfer press system 100 at the time of performing thermal transfer press work using the thermal transfer press machine 1 is shown. As shown in FIG. 6, the thermal transfer press system 100 is provided with the fluid supply apparatus 30 which supplies a fluid to the heat transfer press machine 1 and the flow path 163 of the temperature control plate 16. As shown in FIG. .

In addition to the components described above, the thermal transfer press machine 1 includes a pressure regulator (pressure adjusting means) 21 for adjusting the pressure of steam flowing in the flow path 163 of the temperature control plate 16, and a flow path ( Flow rate regulator (flow rate adjustment means) 22 which adjusts the flow volume of the water circulated to 163, the opening-closing valve 23 provided in the both sides of the flow path 163 of the temperature control plate 16, and the temperature control plate 16 The pressure regulator 21, the flow regulator 22, the opening / closing valve 23 and the slide 13 based on the temperature sensor 24 as a temperature detection means which detects the temperature of The controller 25 is provided as a control means for controlling the operation of the back and the like.

The pressure regulator 21 is provided independently with respect to a pair of temperature control plates 16, respectively. With such a configuration, the pressure of the steam flowing through the flow path 163 of the pair of temperature regulating plates 16 can be controlled independently, and the heating temperature of the temperature regulating plates 16 can be independently controlled and adjusted. have.

Moreover, the pressure regulator 21 is provided in the inlet side (pressure regulator 21A) and the outlet side (pressure regulator 21B) of the flow path 163 with respect to each temperature regulation plate 16. As shown in FIG. With such a configuration, the pressure regulators 21 (21A, 21B) adjust the pressure of the steam flowing through the flow path 163 on both sides of the flow path 163, so that the pressure can be adjusted more accurately. .

The flow regulator 22 is provided independently with respect to a pair of temperature control plates 16, respectively. By such a structure, the flow volume of the water which flows through the flow path 163 of the pair of temperature control plates 16 can be controlled independently, and the cooling temperature of the temperature control plate 16 can be controlled and adjusted independently. . The flow regulator 22 is provided at the inlet side of the flow path 163 of the temperature regulating plate 16.

Here, the flow passage 41 from the pressure regulator 21A provided on the inlet side of the flow passage 163 and the flow passage 42 from the flow regulator 22 are connected to the same flow passage 43, and the flow passage 43 is It is connected to the piping 192 of the temperature regulating plate 16. Here, the flow path 43 communicates with three piping 192 which communicates with the one recessed part 167A divided by the wall part 169 among the piping 192 of the temperature control plate 16. As shown in FIG. In addition, the three pipes 192 communicating with the other concave portion 167B are connected to a flow path 44 for discharging the fluid in the flow path 163, and the flow path 44 is a flow path through which steam is discharged ( 45) and a flow path 46 through which water is discharged. In addition, a pressure regulator 21B is attached to the flow path 45.

By this structure, steam and water from the fluid supply device 30 are connected to the common pipe 192 of the temperature control plate 16, and the same flow path 163 can be distributed. Therefore, since it is not necessary to separately install the heating and cooling flow paths in the temperature control plate 16, the contact area of steam or cooling water in the temperature control plate 16 can be made large, and the temperature control plate The heating efficiency or cooling efficiency of (16) can be improved.

The opening / closing valve 23 is provided in the inlet side and the outlet side of the flow path 163, respectively, and the opening-closing valve 23 is provided in the middle of the flow path 41, 42, 45, 46 specifically ,. The on-off valve 23 opens and closes the flow paths 41, 42, 45, and 46 by a signal from the controller 25.

The temperature sensor 24 is attached to the temperature control plate 16. As shown in FIG. 4, the long side of the temperature control plate 16 has an attachment hole 241 for attaching the temperature sensor 24 to the center in the thickness direction along the short side direction of the temperature control plate 16. Formed. The attachment holes 241 are formed at two long sides of the same axis of the temperature regulating plate 16 at a predetermined distance from each other, and are disposed in the vicinity of the connecting portion 162, respectively. The temperature sensor 24 respectively detects the temperature of the part and outputs a temperature detection signal to the controller 25.

The controller 25 transmits an adjustment signal to the pressure regulator 21 or the flow regulator 22 based on the temperature detection signal of the temperature sensor 24, and the temperature of the temperature control plate 16 is always a predetermined temperature (predetermined). The pressure or flow rate is controlled so as to be a heating temperature or a predetermined cooling temperature. In addition, the controller 25 controls the timing of opening / closing of the on-off valve 23 based on the temperature detection signal of the temperature sensor 24, switches steam and water flowing in the flow path 163, and controls heating and cooling. Control the timing. In addition, the slide drive device 130 is provided with a pressure sensor 26 for detecting the pressing force applied to the slide 13 and a slide position sensor 27 for detecting the lifting position of the slide 13. The pressing force detection signal from 26 and the slide position detection signal from the slide position sensor 27 are output to the controller 25. The controller 25 monitors the pressing force detection signal from the pressing force sensor 26 and the slide position detecting signal from the slide position sensor 27 on the basis of the temperature detection signal of the temperature sensor 24, while the slide driving device 130 The drive signal for the lifting and lowering movement of the slide 13 is transmitted to control the timing of the press working.

The fluid supply device 30 includes a steam supply device 31 supplying steam as a heating fluid to the temperature control plate 16 and a cooling water supply device 32 supplying water as a cooling fluid to the temperature control plate 16. Doing.

The steam supply device 31 includes a steam boiler 33 and a steam / hot water collector 34. The steam boiler 33 is connected to the pressure regulator 21, and supplies steam to the temperature regulating plate 16 through the pressure regulator 21. The steam / hot water collector 34 is connected to the flow path 45 to recover steam or hot water discharged from the temperature control plate 16. In addition, part of the hot water recovered by the steam / hot water collector 34 is returned to the steam boiler 22, heated again to become steam, and supplied to the temperature control plate 16.

Here, since steam is used as the heating medium of the temperature control plate 16, the condensation temperature of the steam is determined to be saturated steam pressure, so that the pressure of the flow path 163 of the temperature control plate 16 is adjusted to stabilize the temperature. Temperature management with low temperature deviation can be performed. In addition, since the steam is used as the heating medium, the thermal conductivity to the temperature control plate 16 can be improved, so that the heating time of the temperature control plate 16 can be shortened, and the cycle time of the thermal transfer press work is achieved. It can be shortened.

The cooling water supply device 32 includes a cooling water circulation device 35 and a factory cooling water supply device 36. The cooling water circulation device 35 incorporates a pump (not shown) and is connected to the pipe 192 on the inlet side of the temperature control plate 16. Cooling water is supplied to the temperature control plate 16 through the flow regulator 22 attached to the way. In addition, the water discharged through the flow path 46, the steam discharged from the steam / hot water recoverer 34, and some hot water are connected to the cooling water circulation device 35 or the flow path 46. ) Is recovered. The heat exchanger 351 is built in the cooling water circulation device 35, and the temperature control plate 16 and the steam and hot water recovery unit 34 are formed by performing heat exchange of the cooling water for the factory supplied from the factory cooling water supply device 36. Steam or water discharged from the liquid is cooled to a predetermined temperature and supplied to the temperature regulating plate 16 again.

Here, since steam is employed as the heating medium and water is used as the cooling medium, the heating performance and the cooling performance are not deteriorated even when the common flow paths 163 are alternately flowed, so that stable heating and cooling for a long time can be achieved. I can do it. In addition, since the flow path 163 is alternately distributed, there is no problem even if the heating medium and the cooling medium are mixed, so that the handleability of the heating medium (vapor) and the cooling medium (water) can be improved. In addition, since there is no problem even if steam and water are mixed, steam or hot water discharged from the steam / hot water collector 34, which is a part of the steam supply device 31, is supplied to the cooling water circulation device 35, which is part of the cooling water supply device 32. By cooling the steam, the steam quickly becomes water and the volume decreases, so that the pressure of the steam / hot water collector 34 can be kept low, and the steam passes through the temperature control plate 16 from the steam boiler 33. It can keep the flow smoothly.

In such a thermal transfer press machine 1, the uneven pattern of the stamper 17 is thermally transferred onto the base 5 by the following thermal transfer press method.

FIG. 7 is a flowchart showing a thermal transfer press method by the thermal transfer press machine 1 of the present embodiment. In Fig. 7, first, the thermal transfer press machine 1 includes a heating step of heating the temperature control plate 16 to a predetermined temperature by steam, and a transfer step of transferring the concave-convex pattern base material 5 on the surface of the stamper 17; The temperature control plate 16 is cooled to predetermined temperature with water, and the cooling process which solidifies the uneven | corrugated pattern on the surface of the base material 5 is provided. In addition, between the heating step and the transfer step, a vacuum step is provided in which a vacuum around the stamper 17 is provided.

First, in the heating step, in the stamper S1, the control unit 25 opens the opening / closing belt 23 connected to the flow paths 41 and 45, thereby steam is supplied from the steam boiler 33 to the temperature control plate 16. Supply. Steam flows from the three pipes 192 of the six pipes 192 to the flow path 163 through a pair of recesses 167 divided by the wall portion 169 of the temperature control plate 16, and the connection portion on the opposite side. If it reaches 162, the other half flow path 163 flows in a reverse direction through the recessed part 167 of the opposite side. And it reaches the manifold 19 through the other recessed part 167 divided by the wall part 169, and is discharged | emitted from the other three piping 192 to the flow path 44 of an exit side. Therefore, the vapor flows in a substantially U shape when the flow path 163 is viewed from the plane of the temperature regulating plate 16.

When steam flows through the flow path 163, a portion of the steam condenses into hot water in the flow path 163. The temperature regulating plate 16 is heated to a predetermined temperature by latent heat (condensation heat) and steam generated at this time. Here, the predetermined temperature is appropriately set in consideration of the material of the substrate 5, the dimensions of the uneven pattern of the stamper 17, and the like, and in this embodiment, the predetermined temperature is set to about 130 ° C. In addition, the pressure of the steam in the flow path 163 is appropriately set in the range of 0.15 to 0.2 MPa.

Next, in parallel with the heating step, in step S2, the substrate 5 is positioned and loaded on the stamper 17 on the bolster 14, and the substrate 5 is placed between the opposing stampers 17. To place. In step S3, the controller 25 transmits a drive signal for lowering the slide 13 to the slide drive device 130. The slide drive unit 130 lowers the slide 13 to a predetermined position, and contacts the wall portions 181 of the vacuum apparatus 18 for presses with each other to fill the space surrounded by the wall portions 181 by the O-ring 182. Open and close. In this state, the stamper 17 held by the slide 13 does not contact the base material 5. In step S4, vacuum suction of the space is started by sucking air in the space inside the wall portion 181 by the air suction device. In step S5, it is determined whether the space inside the wall portion 181 has reached a predetermined pressure (predetermined vacuum pressure), and vacuum suction is continued until the predetermined pressure is reached.

By performing the vacuum process from step S3 to step S5 in this manner, it is possible to prevent air from entering between the stamper 17 and the base material 5. Therefore, the transfer defect of the uneven | corrugated pattern of the stamper 17, etc. can be prevented reliably.

Next, in step S6, the temperature of the temperature control plate 16 is detected by the temperature sensor 24. The temperature detection signal from the temperature sensor 24 is output to the controller 25. The controller 25 monitors the temperature detection signal in step S7, and determines whether or not the temperature of the temperature control plate 16 has reached a predetermined temperature. At this time, two temperature sensors 24 are provided in each of the temperature adjusting plates 16, but in the controller 25, whether the average of the temperature detection signals from these two temperature sensors 24 has reached a predetermined temperature. It may be determined whether or not, or whether one or both of the temperature detection signals from the two temperature sensors 24 has reached a predetermined temperature.

Here, two temperature sensors 24 are respectively provided on the pair of temperature control plates 16, and the pressure regulators 21 are independently provided on the pair of temperature control plates 16 on both sides of the substrate 5, respectively. . For this reason, the pressure control of steam is performed independently to each of the pair of temperature regulating plates 16. Therefore, the temperature adjustment of the temperature control plate 16 can be performed more accurately, and it can make it easy to control so that the heating temperature of a pair of temperature control plate 16 may become equal. Thereby, generation | occurrence | production of the curvature etc. of the base material 5 by the temperature difference of a pair of temperature control plate 16 can be prevented.

Moreover, since the pressure regulator 21 is provided in the inlet shaft of the temperature control plate 16, and the departure side, respectively, the pressure of steam can be adjusted in the said two places. This is because when the steam flows through the flow path 163 to heat the temperature regulating plate 16, the temperature of the steam changes and the pressure fluctuates, thereby preventing the temperature of the temperature regulating plate 16 from decreasing due to this pressure fluctuation. It is useful to In addition, when the steam condenses in the flow path 163 and becomes hot water, the pressure in the flow path 163 tends to fluctuate. Thus, the pressure regulator 21 is also provided on the outlet side of the flow path 163 to adjust the temperature control plate 16. Since it becomes easy to manage the temperature of, it is especially useful.

When the temperature of the temperature control plate 16 reaches a predetermined temperature, the controller 25 outputs a drive signal for lowering the slide 13 to the slide drive device 130 in step S8. The slide drive 130 also lowers the slide 13 to bring the stamper 17 into contact with both surfaces of the substrate 5. In step S9, the controller 25 detects and controls the pressure applied to the slide 13 from the position control for detecting and controlling the position of the slide 13 to control the holding position of the slide 13. It switches to pressure control, adjusts the pressure with respect to the base material 5 of the slide 13, and presses the stamper 17 to the both sides of the base material 5 by predetermined pressure.

Since the operation of the slide 13 is controlled by the pressure control, the gap 15 between the stamper 17 and the base material 5 even when a manufacturing dimension error occurs in the base material 5 or the stamper 17, for example. ), The stamper 17 can be pressurized to the substrate 5 at an appropriate pressure without being pressurized with excessive pressure, so that the occurrence of a defective transfer of the uneven pattern to the substrate 5 can be reliably prevented. Can be.

In step S10, the controller 25 monitors whether the predetermined time has elapsed while maintaining the pressing force to the base material 5 of the slide 13 (transfer process). In this embodiment, the predetermined time is set to 10 seconds, for example. By this transfer process, the stamper 17 heated by the heating of the temperature regulating plate 16 is brought into close contact with the substrate 5, only the surface of the substrate 5 is melted, and formed on the surface of the stamper 17. The uneven pattern is transferred to the substrate 5 surface.

In the present embodiment, the heating step is continuously performed even between the transfer steps, and the controller 25 monitors the temperature detection signal from the temperature sensor 24 to control the pressure regulator 21 to control the pressure of the steam. By adjusting, the temperature of the temperature control plate 16 is continuously maintained at predetermined temperature. Specifically, when the temperature detected by the temperature sensor 24 is lower than the predetermined temperature, an adjustment signal for increasing the pressure of the steam is output. When the temperature is higher than the predetermined temperature, the adjustment signal for reducing the pressure of the steam is output. Outputs

Since the transfer process starts after the temperature control plate 16 is heated to a predetermined temperature by the heating process, the amount of melting of the substrate 5 is sufficient when the stamper 17 is pressed against the substrate 5 for a predetermined time. It is possible to ensure a high reliability, and thus it is possible to reliably prevent the occurrence of a transfer failure of the uneven pattern of the stamper 17.

In addition, since only the vicinity of the surface of the base material 5 is melted by the transfer step, the concavo-convex pattern of the stamper 17 is transferred, so that, for example, the concave-convex pattern can be formed in a short time as compared with the case of forming a concave-convex pattern by conventional ejection molding. have. That is, conventionally, in the case of forming the uneven pattern by injection molding, if the size of the product becomes large or the thickness of the product becomes large, it is impossible to shorten the cycle time by requiring time for cooling. In contrast, in the present embodiment, only the vicinity of the surface of the base material 5 is melted by the transfer step to transfer the uneven pattern, so that the transfer of the uneven pattern in a short time even when the transfer target substrate 5 is enlarged or the plate thickness is increased. Can be performed and it can respond flexibly to the enlargement of the base material 5.

In step S10, after predetermined time elapses with the stamper 17 pressed against the base material 5, it progresses to step S11 and the controller 25 is connected to the flow paths 41 and 45. FIG. The heating step is completed by closing the opening / closing valve 23 for steam. And in step S12, the temperature control plate is opened by opening the opening / closing valve 23 of the storage connected to the flow paths 42 and 46, and supplying cooling water from the cooling water circulation device 35. The fluid circulated in the flow path 163 of (16) is switched from steam to water to start the cooling process.

Since the steam and water are switched and distributed through the common flow path 163 of the temperature control plate 16, it is not necessary to prepare a dedicated flow path, respectively, and the contact area to the temperature control plate 16 can be made large. Therefore, the heating efficiency and the cooling efficiency can be improved, and the temperature control plate 16 and the stamper 17 can be heated or cooled in a short time.

After starting cooling of the stamper 17 in step S12, in step S13, the vacuum state of the space in the wall part 181 by the vacuum apparatus 18 for presses is canceled | released, and a vacuum process is performed. Quit. This is because the stamper 17 is already in close contact with the substrate 5, and the uneven pattern is transferred to the substrate 5, so that it is not necessary to maintain the vacuum any more.

In step S14, the temperature of the temperature control plate 16 is detected by the temperature sensor 24. FIG. The temperature sensor 24 outputs a temperature detection signal to the controller 25. The controller 25 outputs a control signal to the flow regulator 22 based on the temperature detection signal, and controls the temperature of the temperature regulating plate 16 by adjusting the flow rate of water flowing through the flow path 163.

In step S15, the controller 25 monitors the temperature detection signal from the temperature sensor 24, and determines whether or not the temperature detection signal has reached a predetermined temperature.

In addition, the predetermined temperature of cooling of the temperature control plate 16 is set suitably in consideration of the material of the base material 5, the dimension of the uneven | corrugated pattern of the stamper 17, etc., and is set to about 70 degreeC in this embodiment. .

Also in the cooling process, since the flow regulators 22 are set independently of the pair of temperature regulating plates 16, the controller 25 can independently control the temperatures of the pair of temperature regulating plates 16, respectively. . Therefore, the temperature adjustment of the temperature control plate 16 can be performed with high precision. In other words, by controlling the temperature of the pair of temperature regulating plates 16 in the same manner, it is possible to reliably prevent the occurrence of warping when the substrate 5 is cooled.

In addition, in this embodiment, the stamper 17 is in close contact with the substrate 5 at a predetermined pressure even during the cooling step. Therefore, the pressing step is performed through the transfer step and the cooling step, and the cooling step is performed during the pressing step. .

In step S15, when the temperature of the temperature control plate 16 reaches the predetermined temperature, it progresses to step S16, and the controller 25 raises the slide 13 to the slide drive apparatus 130. FIG. Send the drive signal. Based on this drive signal, the slide drive device 130 raises the slide 13 to a predetermined separation position in order to separate the substrate 5.

In step S17, the base 5 is easily peeled from the stamper 17 by blowing air between the base 5 and the stamper 17 by an air blower not shown.

In step S18, the controller 25 transmits a drive signal for further raising the slide 13 to the slide drive device 130. Based on this drive signal, the slide drive device 130 raises the slide 13 to a predetermined carry out position in order to carry out the base material 5 out of the thermal transfer press machine 1.

When the slide 13 rises to a predetermined position in step 18, in step S19, the substrate 5 (product) on which the uneven pattern is transferred to the surface is transferred from the bolster 14 onto the thermal transfer press machine 1. Take out).

After that, in step S20, the controller 25 closes the opening / closing valve 23 connected to the flow paths 42 and 46, and ends the cooling process.

When continuing the next cycle, after closing the opening / closing valve 23 in step S20, the opening / closing valve 23 connected to the flow paths 41 and 45 is opened, and steam flows to the flow path 163, The heating step is started again (return to step S1).

In addition, this invention is not limited to embodiment mentioned above, The deformation | transformation, improvement, etc. in the range which can achieve the objective of this invention are included in this invention.

The pressure adjusting means is provided on both of the outlet shaft and the inlet side of the flow path of the temperature control plate, but is not limited to this. For example, as shown in FIG. 8, the inlet side of the flow path of the temperature control plate 16 is shown. It may be installed only. Alternatively, the pressure vessel water purification stage may be provided only at the outlet side of the temperature regulating plate 16. In this case, although the accuracy of the pressure setting is somewhat sacrificed, the number of installation of the pressure adjusting means is reduced, so that the configuration of the thermal transfer press machine can be simplified.

Although the flow rate adjusting means is provided only at the inlet side of the flow path of the temperature control plate, it is not limited to this, for example, may be provided only at the outlet side of the flow path, or may be provided at both the inlet side and the outlet side of the flow path. good. The flow rate adjusting means is arranged upstream of the on / off valve, but is not limited to this, and, for example, as shown in FIG. 8, it is downstream from the on / off valve 23, that is, the on / off valve 23 and the temperature control unit. It may be arranged between the plates 16.

The cooling medium passed through the flow path in the cooling step is not necessarily limited to water. For example, any cooling medium such as a fluorine-based inert liquid such as perfluoropolyether can be employed. In addition, the method of adjusting the cooling temperature of a temperature control plate is not limited to adjusting the flow volume of a fluid by a flow volume adjusting means, In addition, for example, the temperature of a temperature control plate is adjusted by adjusting the pressure or temperature of a fluid. It may be the way.

The stamper is provided below the slide and above the bolster, and the thermal transfer machine transfers the uneven pattern on the surface of the stamper on both sides of the substrate. However, the stamper is not limited thereto. For example, the stamper is located below the slide or above the bolster. The heat transfer press machine may be provided to transfer the uneven pattern only on one side of the substrate. In this case, a stamper does not need to be attached to the temperature control plate on the side where the uneven pattern is not transferred, or in order to equalize the temperature distribution on both sides of the base material, a stamper having no uneven pattern formed on the temperature control plate is piled up. It may be attached as.

As a method of fixing the stamper to the temperature control plate, an appropriate method may be selected so that the front surface of the stamper is well adhered to the temperature control plate. For example, in the method of adsorbing the stamper to the temperature control plate by air suction, for example, It is good also as a structure as shown in FIG. As shown in FIG. 9, the plate portion 161 of the temperature regulating plate 16 has a groove along the longitudinal direction of the temperature regulating plate 16 on the outer side (both in the width direction) of the region where the flow path 163 is formed. 52 is formed. In addition, a through hole 51 communicating with the groove 52 is formed at approximately the center in the longitudinal direction of the temperature regulating plate 16. The stamper may be provided in the shape of the temperature control plate 16 so as to cover the groove 52, and the stamper may be sucked through the groove 52 from the through hole 51. In addition, in order to increase the size of the stamper, a board-shaped stamper holder is provided between the temperature control plate 16 and the stamper when the center portion of the stamper is reliably adsorbed. The stamper holder is provided with a plurality of grooves in the width direction on the surface facing the temperature regulating plate 16, and both ends of each groove communicate with the groove 52 of the temperature regulating plate 16. Then, through holes communicating with these grooves may be formed, and the stamper may be sucked through the through holes. In this case, since the through hole can be formed in the front surface of the stamper holder, the stamper can be adsorbed over the entire surface, and the adhesion to the temperature control plate 16 is good.

In addition, when using a stamper holder in this way, the positioning hole 53 may be formed in the temperature control plate 16, and positioning of the stamper holder with respect to the temperature control plate 16 may be performed. In addition, the stamper may be integrally formed on the surface of the temperature control plate, or may be provided to be detachably attached to the temperature control plate.

Although the flow path of a temperature control plate was formed in substantially circular cross section, it is not limited to this, It can form in arbitrary cross section shapes, such as substantially elliptical shape, substantially rectangular shape, and substantially diamond shape. In the case where the cross-sectional shape of the flow path of the temperature control plate is rectangular or diamond-shaped, it is preferable to form roundness at the corners, and the shape of this edge can relieve the stress applied to the temperature control plate at the time of press working. have. In this case, the roundness of the corners is preferably set to a radius of 0.5 mm or more. Moreover, although the temperature control plate was formed in substantially rectangular shape in planar shape, and the flow path was formed along the longitudinal direction of the temperature control plate, it is not limited to this, For example, even if the flow path is formed along the width direction of the temperature control plate, good. In this case, since the flow path length becomes short, the work for forming the flow path can be simplified. In addition, although the connection part was formed in the longitudinal direction both sides along this, when a flow path is formed along the width direction, a connection part will also be formed in the width direction both sides of a temperature control plate. In this case, since the amount of expansion and contraction in the width direction decreases, the shift of the stamper and the like can be prevented.

If the thickness of the stamper or the thickness of the substrate is sufficient, it is not necessary to form a bolt film hole for blocking the head of the bolt attached to the opposing temperature control plate.

Although the temperature control plate is comprised so that a fluid may flow substantially in a U shape in a flow path, it is not limited to this, For example, it is good to connect a pipe to both ends of a flow path, and to distribute a fluid to all flow paths in the same direction.

The flow path of the temperature control plate is not limited to being formed in a plurality of straight lines. For example, any shape may be adopted in consideration of heat transfer efficiency such as curved shape or vortex shape.

Although the best structure, method, etc. for implementing this invention are disclosed by the above description, this invention is not limited to this. In other words, the present invention is mainly shown in particular with respect to specific embodiments, and has been described and described, but does not deviate from the scope of the technical idea and the object of the present invention, and the shape, material, quantity, and other aspects of the embodiments described above. Various modifications can be added by those skilled in the art in the detailed configuration.

Accordingly, the descriptions limiting the shapes, materials, and the like described above are provided by way of example in order to facilitate understanding of the present invention, and do not limit the present invention. The description in the name of a member beyond the limit of is included in the present invention.

The effect of the present invention is that the pressure regulating means is provided independently of each temperature regulating plate, so that the temperature regulating can be adjusted independently of each other. Therefore, by appropriately adjusting the temperature of each temperature control plate, both surfaces of the substrate can be heated to a desired temperature, whereby problems such as warpage and poor transfer of the substrate can be eliminated, and a molded article obtained by transferring a good uneven pattern can be obtained.

Since the pressure adjusting means is provided on both the inlet and outlet sides of the flow path, the pressure at both the inlet and the outlet of the flow path is appropriately adjusted so that the pressure of the steam in the flow path can be reliably and stably adjusted. The adjustment is sure and stable as well. Moreover, since the pressure can be set at each of the inlet side and the outlet side by the pressure adjusting means, the flow rate can be adjusted even from the pressure difference, and the temperature adjustment is precisely performed even in the temperature rising process.

Since the flow rate adjusting means is provided independently on the temperature regulating plate, even when cooling the temperature regulating plate, the temperature of each temperature regulating plate can be adjusted independently, more dense temperature adjustment is possible, and the substrate is warped. And problems such as poor transfer can be more reliably prevented.

Since the thermal transfer press processing is performed by the thermal transfer press machine, the same effect as that of the above-described thermal transfer press machine can be obtained, and the temperature adjustment of the temperature control plate is independently adjusted, so that the temperature adjustment becomes more accurate. The occurrence of problems such as bending of the substrate and poor transfer can be reliably prevented.

Claims (5)

A thermal transfer press machine (1) for transferring an uneven pattern formed on a surface of a stamper (17) on a surface of a substrate (5), A flow path 163 through which steam can flow, and a temperature adjusting plate 16 adjusted to a predetermined temperature by the steam; And Pressure adjusting means (21, 21A, 21B) for adjusting the pressure of the steam in the passage (163), The temperature control plate 16 is installed on the slide 13 side and the bolster 14 side of the thermal transfer press machine 1, and the stamper 17 is on at least one side of the temperature control plate 16. Installed, The pressure regulating means (21, 21A, 21B) are respectively installed on the temperature regulating plate (16), the thermal transfer press machine (1). The heat transfer press machine according to claim 1, wherein the pressure adjusting means (21, 21A, 21B) is provided at the inlet side and the outlet side of the flow path (163) of the temperature control plate (16). One). According to claim 1, wherein the water flow in the flow path 163 of the temperature control plate 16 is configured to be circulating, The heat transfer press machine (1), characterized in that the temperature regulating plate is provided with independent flow rate adjusting means (22) for adjusting the flow rate of the water in the flow path (163). 4. The thermal transfer press machine (1) according to claim 3, wherein the flow rate adjusting means (22) is provided at the inlet side and the outlet side of the flow path (163) of the temperature regulating plate (16). A thermal transfer press method for transferring an uneven pattern formed on the surface of the stamper 17 to the surface of the base material 5 using the thermal transfer press machine 1 according to any one of claims 1 to 4, A heating step of distributing steam in the flow path 163 of the temperature control plate 16 to heat the temperature control plate 16 to a predetermined temperature; A pressurizing step of pressing the stamper (17) adjusted to a predetermined temperature in the heating step against the substrate (5); And And a cooling step of cooling the pair of temperature control plates 16 to a predetermined temperature by converting the fluid in the flow path 163 of the temperature control plate 16 from the steam to water during the pressurization step. Heat transfer press method.

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