KR101164866B1 - Molding apparatus, thermal transfer press apparatus, and method of manufacturing thermal transfer molding article - Google Patents

Abstract

Positioning means (31,32) for holding the clamping block (5) for clamping the substrate (4) detachably in the lower mold portion (2A) and positioning the substrate (4) with respect to the shape pattern of the stamper (26). ) Is installed. Since the positioning means 31 and 32 hold the clamping block 5 in the state where the substrate 4 is clamped, positioning the substrate 4 with respect to the shape pattern of the stamper 26 even if the substrate 4 is thin. Can be. In addition, since the positioning means 31 and 32 hold the clamping block 5 detachably, it is possible to separate the substrate 4 from the positioning means 31 and 32 while being clamped to the clamping block 5. Can be. Therefore, in the post process, the base material 4 can be processed based on this clamping block 5, and the base material 4 can be processed correctly with respect to the shape pattern of the stamper 26. FIG.

Mold device, heat transfer press device, heat transfer molding

Description

Manufacturing method of mold apparatus, thermal transfer press apparatus and thermal transfer molded article {MOLDING APPARATUS, THERMAL TRANSFER PRESS APPARATUS, AND METHOD OF MANUFACTURING THERMAL TRANSFER MOLDING ARTICLE}

The present invention relates to a mold apparatus, a thermal transfer press apparatus and a method for producing a thermal transfer molded article.

DESCRIPTION OF RELATED ART Conventionally, the metal mold | die apparatus of the thermal transfer press apparatus which thermal-transfers a fine shape pattern to the base material made of resin is known (for example, refer document 1: JP 2006-175617). The mold apparatus of Document 1 includes an upper mold portion and a lower mold portion. On the opposite surface side of each metal mold | die part, the stamper in which the fine shape pattern (uneven | corrugated pattern) was formed in the surface is provided. The base material is provided on the stamper of the lower die part. The mold apparatus of this document 1 heat-transfers the stamper's shape pattern onto the substrate by heating the stamper to a substrate at or above the thermal softening temperature.

Such a mold apparatus is used for thermally transferring a shape pattern to the base material of thickness 6-8 mm for light guide plates of a liquid crystal display, for example. When thermally transferring the shape pattern to the base material, the side surface of the base material is pressed with a nail, the base material is positioned with respect to the shape pattern of the stamper, and then the shape pattern is thermally transferred onto the base material.

By the way, in the mold apparatus of such a thermal transfer press apparatus, in recent years, it is required to heat-transfer a shape pattern to the base material about 0.5 mm in thickness for the light-guide plate of the liquid crystal display used for a notebook PC (personal computer).

However, when a 0.5 mm thick substrate is used, the side surface of the substrate cannot be pressed with a nail, which makes it difficult to position the substrate with respect to the shape pattern of the stamper. In the case of forming a light guide plate or the like, the shape pattern is thermally transferred onto a rectangular base material, and then a suitable end surface is used as a machining reference surface to impinge on a predetermined jig, for example, by smoothly processing an end surface facing the machining reference surface. It is necessary to form a light incident surface. However, when 0.5 mm-thick base material is pressed, the peripheral edge part of a base material deform | transforms, and a process reference plane will shift | deviate from the direction set with respect to a shape pattern. Therefore, there is also a problem that the light incident surface formed on the basis of the processing reference plane shifts from the direction set with respect to the shape pattern, thereby degrading the performance of the light guide plate.

An object of the present invention is to provide a mold apparatus, a thermal transfer press apparatus, and a thermal transfer molded article manufacturing method that can be positioned with respect to a shape pattern of a stamper even if the substrate is thin, and is easy to form processing standards.

The mold apparatus of the present invention is a mold apparatus which is installed in a thermal transfer press apparatus and thermally transfers a predetermined pattern of shapes to a substrate, the lower mold portion on which the substrate is loaded, the upper mold portion close to the lower mold portion, and And a stamper having the predetermined shape pattern and a clamping block for clamping the substrate, the lower mold portion being provided on at least one of the lower mold portion and the upper mold portion, wherein the lower mold portion is in a state of clamping the substrate. A positioning means for positioning the substrate with respect to the shape pattern is provided by holding the clamping block detachably and positioning the clamping block.

According to this invention, since the positioning means holds the clamping block in a state where the substrate is clamped, the substrate can be positioned with respect to the shape pattern of the stamper even if the substrate is thin.

When the stamper is provided at least in the upper mold portion, the substrate is fixed to the lower mold portion side through the clamping block, so that when the upper mold portion is separated from the lower mold portion after the substrate is pressed and the thermal pattern is transferred to the substrate, It can prevent that a base material adheres to the stamper of an upper metal mold | die part.

Since the positioning means keeps the clamping block detachable, the substrate can be separated from the positioning means while being clamped to the clamping block. Therefore, in a post process, a base material can be processed based on this clamping block, and a base material can be processed correctly with respect to the shape pattern of a stamper.

Further, for example, when processing the substrate of the light guide plate, the cutting edge of the substrate body is cut out by cutting the end portion of the side clamped to the clamping block of the substrate based on the clamping block, and separating the substrate into the edge portion and the substrate body. Can be formed in a predetermined direction with respect to the shape pattern. Therefore, by forming the light incident surface by smoothing the appropriate end surface of the base body with the cut surface as a reference surface, the light incident surface can be formed in a predetermined direction set with respect to the shape pattern, so that the performance of the light guide plate can be maintained well.

In the mold apparatus of this invention, the said positioning means is equipped with the insertion hole into which the said clamping block is inserted, The said insertion hole is a clamping block of the state which clamped the said base material into the insertion hole, The said It is preferable to position a base material with respect to the said shape pattern.

According to this invention, since the positioning means includes the insertion hole into which the clamping block is inserted, the structure of the positioning means is compared with the case where the positioning means includes a clamping device for detachably clamping the clamping block. It can be simplified.

In the mold apparatus of the present invention, the clamping block is formed with a first engagement portion consisting of one of a groove and a projection, and the positioning means is made of another of the groove and the projection, and a second engagement with the first engagement portion. And a fixing means having a portion, wherein the fixing means presses the first engagement portion by the second engagement portion, and presses the clamping block against the inner wall of the insertion hole to positionally fix the clamping block. Do.

According to the present invention, the positioning means can press the clamping block against the inner wall by the fixing means so that the clamping block can be fixed by moving the clamping block slightly so that the relationship between the first engagement portion of the clamping block and the second engagement portion of the fixing means is most stable. Thus, the clamping block can be positioned more accurately.

In the mold apparatus of this invention, it is preferable that the said upper metal mold | die part and the said lower metal mold | die part are provided with the air blow hole which blows air between the said base material and each metal mold | die part.

According to this invention, since the upper mold part and the lower mold part are provided with an air blow hole, air can be ejected between the base material and each mold part from the air blow hole, and the base material can be reliably released from the stamper.

In the mold apparatus of this invention, it is preferable that the said lower metal mold | die part is provided with the movement means which moves the clamping block up and down, and forms the clearance gap between the said base material and the said lower metal mold | die part.

According to this invention, since the lower metal mold | die part is provided with the movement means, it can form a clearance gap between a base material and a lower metal mold | die part by moving a clamping block upwards at the time of mold release. For this reason, air can be blown out from an air blow hole to this clearance gap, and a base material can be released more reliably from a stamper.

The thermal transfer press apparatus of the present invention is characterized by comprising the above-described mold apparatus of the present invention.

According to this invention, since the thermal transfer press apparatus has the structure similar to the structure mentioned above, it can have the same effect.

The method for manufacturing a thermal transfer molded article of the present invention includes a first positioning step of positioning the substrate with respect to a stamper shape pattern by holding a clamping block in a state in which a substrate is clamped in a thermal transfer press apparatus, and the thermal transfer press apparatus. A thermal transfer step of thermally transferring the shape pattern to the substrate, the substrate having the shape pattern thermally transferred and clamped to the clamping block into the processing machine, and the substrate being clamped to the processing machine. And a second positioning step of positioning the substrate by holding the clamping block, and a processing step of processing the substrate by the processing machine.

According to this invention, even if the substrate is thin, the substrate is held through the clamping block, so that the substrate and the clamping block can be positioned with respect to the shape pattern of the stamper. Therefore, after the thermal transfer of the shape pattern on the base material, the base material can be processed based on the clamping block in a predetermined direction and position with respect to the shape pattern of the stamper. It is possible to maintain good performance of the thermal transfer molded article.

In the method of manufacturing a thermal transfer molded article of the present invention, the processing step is to cut the edge portion of the substrate on the side clamped to the clamping block by the processing machine, and cut the substrate into the cut edge portion and the substrate body. It is preferable to provide the cutting process to isolate | separate, and the light incident surface formation process which forms the light incident surface by making the end surface of the said base material main body smooth on the cutting surface of the said base material main body as a processing reference.

According to the present invention, since the end edge of the substrate on the side clamped to the clamping block is cut out based on the clamping block, the substrate is separated into the edge portion and the base body, so that the cut surface of the base body is formed in a predetermined direction with respect to the shape pattern. can do. And since this cutting surface can be processed smoothly and the appropriate end surface of a base material body can be formed as a reference | standard, a light incident surface can be formed in a predetermined direction set with respect to a shape pattern. Therefore, the performance of thermal transfer molded articles, such as a light guide plate, can be kept favorable.

〔One. Overall Configuration of Press System for Thermal Transfer Molded Parts]

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

1 is a cross-sectional view showing the thermal transfer press apparatus 1 according to the present embodiment.

The press system of the thermal transfer molded article of the present embodiment includes a thermal transfer press apparatus 1 shown in FIG. 1, a substrate setting table 6 (see FIG. 10), a cutter 7 (see FIG. 11), and the like. The processing machine is provided.

〔2. Overall Configuration of Thermal Transfer Press]

As shown in FIG. 1, the thermal transfer press apparatus 1 (hereinafter referred to as the press apparatus 1) includes a bolster 11 fixed to the bottom and a slide 12 disposed above the bolster 11. And heat transfer, as well as a drive means 13 having a servo motor, which spaces the slide 12 close to the bolster 11, and controls the position and speed of the slide 12 by driving the servo motor. The control apparatus 14 which controls the whole press apparatus 1, and the metal mold | die apparatus 2 provided between the bolster 11 and the slide 12 are provided.

[3. Basic structure of each mold part]

The mold apparatus 2 is provided with 2 A of lower mold parts on which the base material 4 is mounted, and the upper mold part 2B which adjoins with respect to 2 A of lower mold parts. As the base material 4, it is a base material of the light guide plate used for the liquid crystal display of a notebook PC, and the rectangular acrylic plate of thickness about 0.5 mm is used. Since the basic structure of each metal mold | die part 2A, 2B is substantially the same, below, after explaining the basic structure of each metal mold | die part 2A, 2B, the lower metal mold | die part 2A which has the characteristic structure of this embodiment is explained below. The characteristic structure of the above is demonstrated.

As shown in Fig. 1, each mold part 2A, 2B includes a base plate 21, a cooling plate 22, a temperature plate 23, a frame 24, a stamper 26, The viscous member 27 is provided. The upper mold part 2B further includes a vacuum device 28 and an escape groove 29.

The base plate 21 is formed in a rectangular plate shape and is fixed on the bolster 11 and the slide 12.

The cooling plate 22 is formed in a rectangular plate shape and is fixed to the center of the base plate 21. A plurality of water holes (not shown) are formed in the cooling plate 22. By cooling water flowing through these water holes, the temperature of the cooling plate 22 is kept constant, and it prevents the heat of the temperature plate 23 mentioned later from being transmitted to the bolster 11 and the slide 12 side.

The temperature plate 23 is formed in a rectangular plate shape and is fixed on the cooling plate 22. A plurality of water holes 231 are formed in the temperature plate 23. The temperature plate 23 heats and cools the stamper 26 through the viscous member 27 by flowing steam or cooling water into these water holes 231.

The frame 24 is formed into a rectangular frame, and the plates 22 and 23 are disposed in the opening 241. This frame body 24 is supported by the spring 242, and is provided so that it can move up and down with respect to each plate 22,23. In addition, the vacuum suction hole 243 and the air | atmosphere opening hole 244 mentioned later are formed in the frame 24 of 2 A of lower side mold parts (refer FIG. 2).

The stamper 26 is fixed to the frame 24 to close the opening 241 (see FIG. 3). A packing P3 for sealing the viscous member 27 is fitted between the stamper 26 and the heat plate 23 along the circumference of the opening 241 (see FIG. 3).

The stamper 26 has the predetermined shape pattern which consists of a fine uneven | corrugated pattern on the surface. The stamper 26 is fixed to the frame 24 by a predetermined fastener through vacuum suction and a spacer 30 (see FIG. 2) described later (see FIG. 3). Moreover, the packings P1 and P2 for efficiently vacuum-sucking the stamper 26 are provided in each part of each metal mold | die part 2A, 2B. The stamper 26 is heated above the softening temperature of the substrate 4 by the heat plate 23, and then pressed by the substrate 4 to thermally transfer a predetermined shape pattern to the substrate 4.

The viscous member 27 is provided in the space (refer FIG. 3) enclosed by the stamper 26, the inner wall of the opening part 241, and the heat plate 23. As shown in FIG. This viscous member 27 is compressed when the base material 4 is pressed and the stamper 26 and frame 24 of each metal mold | die part 2A, 2B move downward or upward, respectively, An equal pressure is generated inside, and the pressure distribution with respect to the base material 4 of the stamper 26 of the upper die part 2B is made uniform.

The vacuum apparatus 28 is provided with the wall part 281 and the vacuum pressure supply apparatus which is not shown in figure. The wall portion 281 is provided in a frame along the circumferential edge of the frame body 24, and is connected to the frame body 24 of the upper mold part 2B by the stripper bolt 282 and the spring 283. The wall portion 281 forms a sealed space inside the wall portion 281 when the upper die portion 2B is lowered. A vacuum pressure supply device (not shown) can suck air in the sealed space from the vacuum suction hole 243 (see FIG. 2) to vacuum the sealed space, and open the atmospheric opening hole 244 (see FIG. 2). This can release the vacuum of the sealed space.

The escape groove 29 is for storing an upper portion of the clamping block 5 to be described later when the upper mold portion 2B and the lower mold portion 2A are close to each other in order to press the substrate 4.

〔4. Characteristic configuration of lower mold part]

FIG. 2 is a plan view showing the lower mold part 2A, and FIG. 3 is a sectional view showing the main part of the lower mold part 2A.

In addition to the above configuration, the lower mold part 2A has a spacer 30, an insertion hole 31, a fixing means 32, and a moving means 33 (as shown in FIGS. 2 and 3). 3) and an air blow hole 34. As shown in FIG.

The spacer 30 is formed in a U shape in plan view, is disposed on the circumferential edge of the stamper 26, and the stamper 26 is fixed to the frame 24 by a predetermined fastener. The base material 4 is arrange | positioned inside this spacer 30.

The insertion hole 31 is formed in the frame 24 around the opening 241. The clamping block 5 for clamping the base material 4 is inserted into the insertion hole 31, and the clamping block 5 is drawn out during release. That is, the insertion hole 31 holds the clamping block 5 detachably. This insertion hole 31 functions as a press side positioning means for positioning the substrate 4 with respect to the shape pattern of the stamper 26 via the clamping block 5.

Thus, in this embodiment, since the base material 4 is positioned through the clamping block 5, even if the thickness of the base material 4 is very thin (0.5 mm), the base material 4 is positioned with respect to the shape pattern of the stamper 26. You can decide.

In addition, the substrate 4 can be positioned while being clamped to the clamping block 5, and the substrate 4 can be separated from the press apparatus 1 while being clamped to the clamping block 5. Therefore, in the subsequent step, the substrate 4 can be processed based on the clamping block 5, and the substrate 4 can be precisely processed with respect to the shape pattern of the stamper 26.

In addition, since the base material 4 is fixed to the lower mold part 2A side by the clamping block 5 held in the insertion hole 31, after the base material 4 is pressed, the upper mold part 2B is lowered. When separated from the mold part 2A, the base material 4 can be prevented from adhering to the stamper 26 of the upper mold part 2B.

Moreover, since the press side positioning means was comprised including the insertion hole 31, compared with the case where the press side positioning means includes the clamping apparatus which clamps the clamping block 5 detachably, the structure is simpler. It can be done.

4 is a side sectional view showing the clamping block 5, FIG. 5 is a plan view showing the clamping block 5, and FIG. 6 is a sectional view taken along the line VI-VI of FIG.

The clamping block 5 is formed in a rectangular parallelepiped shape and slightly smaller than the insertion hole 31 in cross section. In addition, the clamping block 5 is configured to be able to clamp the substrate 4 and to easily release the clamping. As shown in FIG. 4, the clamping block 5 includes a block body 51, a clamping member 52, a lid member 53, a pair of disc springs 54, and a pair of screws 55. (Only one city) is provided.

The block main body 51 is formed in an L shape when viewed from the side, and has a stepped portion 511. The convex part 513 is formed in the upper surface 512 of the step part 511 along the longitudinal direction (FIG. 4 paper vertical direction) of the block main body 51. As shown in FIG. The block main body 51 is provided with a pair of jig insertion holes 514 extending in the vertical direction, one end of which is opened on the upper surface 510 of the block body 51 and the other end of which is opened on the convex portion 513. . In addition, a positioning groove 516 (Fig. 5) is formed in the center of the rear surface 515 of the block main body 51 as a triangular first engagement portion in plan view in the vertical direction. The pressing protrusion 325 of the slider 321 mentioned later contacts the positioning groove 516.

The clamping member 52 is formed in a concave shape when viewed from the side, and is disposed in the step portion 511 to be fitted into the convex portion 513. The lower surface 521 of the clamping member 52 is provided with a pair of storage holes 522.

The disc spring 54 is disposed in the receiving hole 522 and biases the clamping member 52 upward.

The cover member 53 is fixed to the block main body 51 by the screw 55. In the lid member 53, support protrusions 531 are formed at portions corresponding to the pair of storage holes 522 of the clamping member 52, respectively. The support protrusion 531 is inserted into the receiving hole 522 to support the dish spring 54.

FIG. 7 is a diagram for explaining an operation when the clamping block 5 clamps the substrate 4.

In order to clamp the substrate 4 to the clamping block 5, as shown in FIG. 7, the jig T is inserted from the jig insertion hole 514, and the clamping member 52 is connected to the plate spring 54. Compresses downward against the biasing force. Then, in this state, the substrate 4 is inserted into the gap formed between the clamping member 52 and the block main body 51 until it collides with the convex portion 513, and then the jig T is inserted. By drawing out from the hole 514, the base material 4 is inserted into the clamping member 52 and the block main body 51, and is firmly clamped. At this time, the convex part 513 collides with the base material 4, and functions as block side positioning means which positions the base material 4 with respect to the said clamping block 5. As shown in FIG.

Returning to FIG. 3, the fixing means 32 includes a slider 321 and a cylinder 322.

The slider 321 is formed with a track hole 323 extending toward the clamping block 5. The slider 321 is inserted into the track hole 323 and is provided to be slidably moved toward the clamping block 5 by a stripper bolt 324 screwed to the frame 24. At the distal end of the slider 321, a pressing projection 325 (Fig. 5) is formed as a second engagement portion formed in a curved line when the distal edge thereof is viewed in a plane.

The cylinder 322 is provided with the elastic arm part 326 and is comprised so that the slider 321 can be pressed.

8 is a view for explaining the operation of the fixing means 32.

After the clamping block 5 is inserted into the insertion hole 31, the fixing means 32 of this structure presses the slider 321 by the cylinder 322, as shown in FIG. ), The clamping block 5 is pressed against the inner wall of the insertion hole 31, and the clamping block 5 is positioned in the first direction, which is the advancing direction of the slider 321. At the same time, the fixing means 32 makes the clamping block 5 with the slider 321 orthogonal to the advancing direction of the slider 321 so that the relationship between the pressing projection 325 and the positioning groove 516 is most stable. The clamping block 5 is also positioned in the second direction by moving in the direction (see FIG. 5).

Thus, in the present embodiment, the pressing projection 325 is brought into contact with the positioning groove 516 to press the clamping block 5 against the inner wall of the insertion hole 31, so that the clamping block 5 can be more accurately in the horizontal direction. Positioning can be performed, and furthermore, the substrate 4 can be positioned more accurately with respect to the shape pattern of the stamper 26. In this embodiment, the fixing means 32 and the insertion hole 31 are provided, and the press which keeps the clamping block 5 detachably and positions the base material 4 with respect to the shape pattern of the stamper 26 is carried out. The side positioning means is comprised.

As shown in FIG. 8, the moving means 33 includes a support plate 331, a stripper bolt 332, and a spring 333.

The stripper bolt 332 and the spring 333 connect the support plate 331 and the frame body 24.

One spring 333 is provided in each side of the stripper bolt 332 in the second direction.

The support plate 331 is disposed in the insertion hole 31 and supports the clamping block 5 so as to be movable up and down. Specifically, the support plate 331 supports the clamping block 5 at a high position to form a gap between the substrate 4 and the stamper 26 when the vacuum in the wall portion 281 by the vacuum device 28. . Thereby, the base material 4 and the stamper 26 can be pressed, and air can remain in the base 4 and the stamper 26, and heat transfer can be prevented from performing correctly.

The support plate 331 is thermally transferred to the base material 4 so that when the upper mold part 2B is lowered, the support plate 331 is pressed downward through the clamping block 5 to the upper mold part 2B. It moves downward against the biasing force of the spring 333, and moves the clamping block 5 downward. Then, the substrate 4 is kept horizontal so that the gap between the substrate 4 and the stamper 26 is eliminated in the clamping block 5.

In addition, after the base material 4 is thermally transferred, the supporting plate 331 is again subjected to a biasing force above the spring 333 when the upper mold part 2B is separated from the lower mold part 2A. Moving upwards, the clamping block 5 is supported at a high position to form a gap between the substrate 4 and the stamper 26. As a result, the air blow hole 34 described later allows the air to be blown out in this gap, so that the substrate 4 can be released from the stamper 26 more reliably.

9 is a cross-sectional view showing the air blow hole 34.

As shown in FIG. 9, the air blow hole 34 is below the base material 4 of the side clamped to the clamping block 5 in the frame 24, and is shown to both sides of the insertion hole 31 ( It is opened in FIG. 2), respectively. In addition, the air blow hole 34 is also formed in the position corresponding to the air blow hole 34 of the lower metal mold | die part 2A also in the upper metal mold | die part 2B (refer FIG. 18).

These air blow holes 34 communicate with air supply holes 341 that supply air to the air blow holes 34, respectively. Moreover, each air blow hole 34 is formed inclined toward the clearance gap between the base material 4 and the frame body 24 in the vicinity of the surface of the frame body 24, so that the base material 4 and the frame body 24 may be inclined. Air can be ejected efficiently to the clearance gap. These air blow holes 34 provide air to the gap between the base material 4 and the stamper 26 when the upper mold part 2B is separated from the lower mold part 2A after the base material 4 is thermally transferred. It blows off and the base material 4 is separated from the stamper 26. FIG.

[5. Structure of Equipment Setting Table]

10 is a plan view showing the substrate setting table 6. In addition, in the base material setting table 6 and the cutter 7 mentioned later, the same code | symbol is attached | subjected to the element same as the element of the press apparatus 1, and the description is abbreviate | omitted or simplified.

The base material setting table 6 is provided with the table main body 61, as shown in FIG. The table main body 61 is provided with an insertion hole 31, a fixing means 32, and a guide member 62.

The insertion hole 31 positions the clamping block 5 relative to the guide member 62 (the substrate 4 guided by the guide member 62) by inserting the clamping block 5 into the insertion hole 31. do.

The fixing means 32 presses the clamping block 5 against the inner wall of the insertion hole 31 by the slider 321 to position the clamping block 5 with respect to the guide member 62 more accurately.

The guide member 62 is formed in a L-shape in plan view, and is comprised by a pair of members thicker than the opposing base material 4. The guide member 62 guides the substrate 4 when clamping the substrate 4 to the clamping block 5 inserted in the insertion hole 31.

[6. Configuration of Machine]

11 is a plan view of the cutter 7.

The processing machine is equipped with the cutting machine 7 shown in FIG. 11, and the smoothing machine not shown.

The cutter 7 is provided with the table part 71 and the cutting means which is not shown in figure.

The clamping block 5 is inserted into the table portion 71 to insert the clamping block 5 into the insertion hole 31 for positioning the clamping block 5 with respect to the cutting schedule line L described later, and the clamping block 5 into the insertion hole 31. The fixing means 32 which presses against the inner wall of () and positions the clamping block 5 more precisely with respect to the cutting plan line L is provided.

The cutting means not shown is constituted by, for example, a heat cutting machine or an end mill, and the end portion 41 (hereinafter referred to as a clamping region) of the substrate 4 on the side clamped by the clamping block 5 is prescribed. Cut into trajectory. That is, the cutting means cuts the clamping region 41 of the base material 4 along a predetermined cut schedule line L. In this embodiment, the cutting plan line L is set so that it may become parallel to the edge of the longitudinal direction side of the base material 4. The cutting means separates the base material 4 into the clamping region 41 and the base body 42 by cutting the base material 4 along the cutting schedule line L. FIG.

The smoothing machine is comprised by a machine, such as a cutting machine, and smoothly processes the end surface of the base material main body 42. FIG. Although this smoothing machine is mentioned later in detail, the smoothing surface F1 smoothly processes the opposing surface F2 with respect to the cut surface F1 of the base material main body 42 with which the cut surface F1 collided with the suitable jig | tool, and makes the said facing surface F2 It is formed as a light incident surface.

[7. Manufacturing method of light guide plate as thermal transfer molded article]

Hereinafter, the manufacturing method of the light guide plate as a thermal transfer molded article by the press system of the thermal transfer molded article of this embodiment is demonstrated.

12 is a flowchart showing a method of manufacturing the light guide plate, and FIG. 13 is a plan view showing the substrate setting table 6.

In the manufacturing method of the light guide plate of this embodiment, as shown in FIG. 13, the base material 4 is clamped to the clamping block 5, guided by the guide member 62 in the base material setting table 6 (clamping process) (S1)). Specifically, the clamping block 5 is inserted into the insertion hole 31 of the substrate setting table 6, and the clamping block 5 is positioned more accurately with respect to the substrate 4 by the fixing means 32. . Then, the jig T is inserted into the jig insertion hole 514 to lower the clamping member 52 (FIG. 7), and guide the substrate 4 to the clamping member 52 and the block body while guiding the guide member 62. Clamping while inserting the substrate 4 relative to the clamping block 5 by inserting it into the gap of 51 until it hits the convex portion 513 and drawing the jig T out of the jig insertion hole 514. The substrate 4 is clamped to the block 5.

FIG. 14: is sectional drawing which shows the press apparatus 1 into which the base material 4 is carried. 14-16 and 18, the press apparatus 1 was simplified and illustrated in order to make it easy to understand.

After the clamping process S1, as shown in FIG. 14, the base material 4 and the clamping block 5 are carried in to the press apparatus 1 by the carrying-in / out means 8 which have the adsorption means 81, and a base material The substrate 4 is positioned with respect to the shape pattern of the stamper 26 by inserting the clamping block 5 in the state of clamping (4) into the insertion hole 31 (first positioning step ( S2)).

Specifically, in the first positioning step S2, an insertion positioning step of positioning the substrate 4 by inserting the clamping block 5 into the insertion hole 31, and the clamping block by the fixing means 32. By pressing (5) into the insertion hole 31, the pressing positioning process of positioning the base material 4 more accurately is performed. In the insertion positioning process, the moving means 33 supports the clamping block 5 at a high position to form a gap between the base material 4 and the stamper 26.

FIG. 15: is sectional drawing which shows the press apparatus 1 for evacuating the inside of the wall part 281. As shown in FIG.

After the first positioning step S2, the press apparatus 1 lowers the slide 12 to form a sealed space containing the substrate 4 or the like in the wall portion 281 as shown in FIG. In addition, the said vacuum space 28 is made to vacuum the said sealed space (vacuumation process S3). At this time, as mentioned above, since the clearance gap is formed between the base material 4 and the stamper 26 by the moving means 33, the base material 4 and the stamper 26 are pressed, and the base material 4 and the stamper are pressed. It is possible to prevent the air from remaining between them. And it can prevent that thermal transfer becomes inaccurate with this residual air.

FIG. 16: is sectional drawing which shows the press apparatus 1 which thermal-transfers a shape pattern to the base material 4. As shown in FIG.

After the vacuuming process S3, the press apparatus 1 heats the stamper 26 of each metal mold | die part 2A, 2B with the temperature plate 23 to the softening temperature of the base material 4, or more, and then slides ( 12) is lowered, and as shown in FIG. 16, the shape pattern of the stamper 26 of each metal mold | die part 2A, 2B is thermally transferred to the front and back of the base material 4, respectively (thermal transfer process S4). . At this time, the moving means 33 is pushed downward through the clamping block 5 to the upper die portion 2B to move the clamping block 5 downward against the biasing force of the spring 333.

FIG. 17: is a figure which shows the shape pattern of the stamper 26 of the lower side mold part 2A, and the shape pattern heat-transferred to the base material 4. As shown in FIG.

In this thermal transfer process S4, as shown in FIG. 17, since the base material 4 is positioned with respect to the shape pattern of the stamper 26 by the clamping block 5, the stamper 26 with respect to the base material 4 Can be accurately thermally transferred to a predetermined position and direction.

After the thermal transfer step S4, the press apparatus 1 softens the substrate 4 through each stamper 26 by the heat plate 23 while the substrate 4 is sandwiched by the respective stampers 26. The shape pattern transferred to the base material 4 by cooling below is fixed. Then, the press apparatus 1 releases the vacuum state of the sealed space in the wall portion 281 by the vacuum apparatus 28.

(Cooling and vacuum releasing step (S5)).

FIG. 18: is sectional drawing which shows the press apparatus 1 which releases the base material 4 from the stamper 26. As shown in FIG.

After the cooling and vacuum releasing step (S5), the press apparatus 1 raises the slide 12 to close the gap between the substrate 4 and the stamper 26 of the upper die portion 2B, as shown in FIG. Form. At this time, since the moving means 33 moves the clamping block 5 upward by the biasing force of the spring 333 as the slide 12 rises, the base material 4 and the lower metal mold | die part 2A A gap is also formed between the stampers 26 of. And the press apparatus 1 raises the slide 12 in this way, forms a clearance gap between the base material 4 and each stamper 26, and simultaneously blows the air of each metal mold | die part 2A, 2B in each clearance gap. The base material 4 is released from each stamper 26 by blowing air from the hole 34 (release process S6).

Thus, in this embodiment, a clearance is formed between the base material 4 and the stamper 26 of the upper metal mold | die part 2B by raising the slide 12, and the moving means 33 and the base material 4 Since a gap is formed between the stampers 26 of the lower mold part 2A, and air is blown out to each gap, the base material 4 can be reliably released from the stamper 26. In addition, the ascending speed of the slide 12 is managed by the control apparatus 14 (FIG. 1) so that the clearance gap formed between the base material 4 and each stamper 26 at the time of blowing air may become an optimal magnitude | size. .

After the releasing step S6, the press apparatus 1 releases the clamping block 5 by the fixing means 32, raises the slide 12, and moves the wall portion 281 to the lower mold portion 2A. ), The base material 4 and the clamping block 5 are made to be taken out by the carry-in / out means 8 (draw-out enablement process S7).

19 is a plan view of the cutter 7 for positioning and holding the clamping block 5.

After the take-out enabling process S7, the carry-out / out means 8 takes out the base material 4 and the clamping block 5 from the press apparatus 1, and carries it in the cutting machine 7, and as shown in FIG. While the clamping block 5 in the state of clamping (4) is inserted into the insertion hole 31, the fixing means 32 presses the clamping block 5 to the inner wall of the insertion hole 31, and the substrate ( 4) is fixed to the cutting schedule line L by the cutter 7 (2nd positioning process S8).

20 is a plan view of the substrate 4 cut by the cutter 7.

After the second positioning step S8, the cutter 7 cuts the clamping region 41 of the substrate 4 along the cutting schedule line L, and cuts the substrate 4 into the clamping region 41 and the substrate body. Separated by (42) (cutting step (S9)). At this time, since the base material 4 is positioned with respect to the cutting plan line L, the shape pattern of the base material 4 can be determined with respect to the cut surface F1 of the base material main body 42 in a predetermined direction.

After the cutting step S9, the light guide plate is manufactured by colliding the appropriate surface with the cut surface F1 as a machining reference surface, and making the opposite surface F2 of the cut surface F1 smooth by a smoothing machine such as a cutting machine to form a light incident surface. (Emitting surface formation process (S10)). At this time, since the shape pattern of the base material 4 is determined in the predetermined direction with respect to the cut surface F1, the light incident surface parallel to the cut surface F1 can also be determined in the predetermined direction with respect to the shape pattern of the base material 4 The performance of the light guide plate can be maintained satisfactorily. In this embodiment, this light incident surface formation process S10 and the cutting process S9 are provided, and a process process is comprised.

〔8. Variation of Embodiment]

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.

In the above embodiment, the stamper 26 is provided at any one of the lower mold part 2A and the upper mold part 2B, but the stamper 26 is provided at only one of the lower mold part 2A and the upper mold part 2B. It may be installed.

In the said embodiment, although the positioning means was comprised including the insertion hole 31, the positioning means may be comprised, for example with the clamping apparatus which clamps the clamping block 5 so that attachment or detachment is possible, Appropriate structure can be employ | adopted as long as it can keep detachable (5).

In the said embodiment, although the movement means 33 was equipped with the spring, it may be provided with the cylinder, and a suitable structure can be employ | adopted as long as the clamping block 5 can be moved up and down.

In the above embodiment, the positioning groove 516 is formed on the clamping block 5 side, and the pressing projection 325 is formed on the fixing means 32 side, but the projection is formed on the clamping block 5 side, The groove which engages the said projection may be formed in the fixing means 32 side.

In the above embodiment, the method of manufacturing the mold apparatus, the press apparatus and the thermal transfer molded article of the present invention was applied to the molding of a very thin light guide plate for the liquid crystal display of a notebook PC, but the mold apparatus, the press apparatus and the thermal transfer molded article of the present invention The manufacturing method can be applied to molding of diffusion plates for liquid crystal displays, molding of lenses, optical disk substrates, and the like, and can be applied to molding of suitable thermal transfer molded articles. In addition, a processing machine is not limited to the structure of this embodiment, According to the thermal transfer molded article to manufacture, a suitable structure can be employ | adopted.

1 is a cross-sectional view showing a thermal transfer press device according to an embodiment of the present invention.

2 is a plan view showing the lower mold part.

3 is a cross-sectional view showing the main portion of the lower die portion.

4 is a side cross-sectional view showing the clamping block.

5 is a plan view of the clamping block.

6 is a cross-sectional view taken along the line VI-VI of FIG. 4.

7 is a view for explaining an operation when the clamping block clamps the substrate.

8 is a view for explaining the operation of the fixing means.

9 is a cross-sectional view showing an air blow hole.

10 is a plan view showing a substrate setting table.

11 is a plan view of a cutting machine.

12 is a flowchart illustrating a method of manufacturing a light guide plate.

It is a top view which shows a base material setting table.

It is sectional drawing which shows the press apparatus to which a base material is carried.

It is sectional drawing which shows the press apparatus for evacuating the inside of a wall part.

It is sectional drawing which shows the press apparatus which heat-transfers a shape pattern to a base material.

17 is a view showing the shape pattern of the stamper and the shape pattern thermally transferred to the base material.

It is sectional drawing which shows the press apparatus which releases a base material from a stamper.

19 is a plan view of a cutter for positioning and holding a clamping block;

It is a top view which shows the base material cut | disconnected by the cutter.

Claims (10)

A mold apparatus installed in a thermal transfer press apparatus and thermally transferring a predetermined shape pattern onto a substrate: A lower mold part on which the base material is loaded; An upper mold part spaced apart from the lower mold part in close proximity; A stamper provided on at least one of the lower mold portion and the upper mold portion and having the predetermined shape pattern; A clamping block for clamping the substrate by sandwiching the substrate, The lower mold portion is provided with positioning means for positioning the substrate relative to the shape pattern by detachably holding the clamping block in a state where the substrate is clamped, and positioning the clamping block. And the substrate is positioned while being clamped to the clamping block and separated from the thermal transfer press device while being clamped to the clamping block. The method of claim 1, wherein the positioning means has an insertion hole into which the clamping block is inserted, The said insertion hole is a mold apparatus characterized by positioning the said base material with respect to the said shape pattern by inserting the clamp block of the state which clamped the said base material to the insertion hole. The method of claim 2, wherein the clamping block is formed with a first engagement portion consisting of one of a groove and a projection, The positioning means is provided with a fixing means having a second engagement portion which is made of the other of the groove and the projection and engaged with the first engagement portion, And the fixing means presses the first engagement portion by the second engagement portion and presses the clamping block against the inner wall of the insertion hole to positionally fix the clamping block. 4. The mold apparatus according to any one of claims 1 to 3, wherein the upper mold portion and the lower mold portion are provided with an air blow hole for blowing air between the substrate and the respective mold portions. 5. The mold apparatus according to claim 4, wherein the lower mold portion includes moving means for moving the clamping block up and down to form a gap between the substrate and the lower mold portion. The thermal transfer press apparatus provided with the metal mold | die apparatus in any one of Claims 1-3. The die transfer apparatus of Claim 4 is provided, The heat transfer press apparatus characterized by the above-mentioned. The die transfer apparatus of Claim 5 is provided, The heat transfer press apparatus characterized by the above-mentioned. As a method of manufacturing a thermal transfer molded article: A first positioning step of positioning the substrate with respect to the shape pattern of the stamper by holding the clamping clock in the state of clamping the substrate in the thermal transfer press apparatus; A thermal transfer step of thermally transferring the shape pattern to the substrate in the thermal transfer press apparatus; A second positioning in which the shape pattern is thermally transferred, the substrate being clamped to the clamping block is brought into the machine, and the substrate is positioned by holding the clamping block while the substrate is clamped to the machine; fair; And And a processing step of processing the substrate by the processing machine. The method of claim 9, wherein the processing step, A cutting step of cutting the end edge portion of the substrate on the side clamped to the clamping block by the processing machine, and separating the end edge portion from the cut substrate into a base body; And And a light incident surface forming step of forming a light incident surface by smoothing the end surface of the substrate main body on the basis of the cut surface of the substrate main body as a processing criterion.

Images