JP4907316B2 - Molding apparatus and molding method - Google Patents

Molding apparatus and molding method Download PDF

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JP4907316B2
JP4907316B2 JP2006321778A JP2006321778A JP4907316B2 JP 4907316 B2 JP4907316 B2 JP 4907316B2 JP 2006321778 A JP2006321778 A JP 2006321778A JP 2006321778 A JP2006321778 A JP 2006321778A JP 4907316 B2 JP4907316 B2 JP 4907316B2
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molding
shaping
divided pieces
predetermined shape
mold
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JP2008132715A (en
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郁夫 浅井
稔 笹村
克久 豊島
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株式会社型システム
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  The present invention relates to a molding apparatus and a molding method, and in particular, includes a surface shaping unit that molds a predetermined shape on the surface of a thin plate-shaped molding material, and an end surface molding unit that molds an end surface of the molding material into a predetermined shape. A predetermined shape on the surface by heating and pressurizing a thin plate-shaped molding material with a pair of molding surfaces provided on the molding machine and a pair of molding surfaces arranged opposite to each other and relatively close to and away from each other In addition, the present invention relates to a molding method for molding the end surface into a predetermined shape by pressing the end surface molding member relative to the end surface of the molding material.

  For example, an edge light type backlight unit in which a light source is arranged on a side surface of a liquid crystal display device includes a light guide plate for the purpose of uniformly irradiating the entire surface of the liquid crystal panel with light from the light source incident from the side. . A pattern having a predetermined shape is formed on the surface on the light exit surface side of the light guide plate in order to improve the luminance distribution and obtain uniform diffused light. This pattern is formed by transfer using a mold having a stamper in which a corresponding reverse pattern is engraved by an etching method or the like.

  Patent Document 1 is known as a technique for forming such a light guide plate. Patent Document 1 discloses a light guide plate molding apparatus that performs press molding on a side surface (end surface) of a molded light guide plate that is primarily molded, and pressurizes and heats to finish the side surface of the light guide plate. And a light guide plate forming method.

  Patent Document 1 discloses a holding means for holding the molding light guide plate in contact with one or both of the front and back surfaces of the molding light guide plate, and a molding light guide plate held by the holding means. A side surface forming means capable of forming at least one side surface, and the side surface forming means includes a pressurizing portion capable of directly abutting against the one side surface of the light guide plate for molding, and the pressurizing portion. A heating mechanism capable of heating; and a pressurizing mechanism capable of pressurizing in a direction substantially perpendicular to the one side surface of the light guide plate to be molded by the pressurizing unit. The pressure part is formed by a stamper capable of transferring a pattern or forming a smooth surface on the one side surface of the light guide plate to be molded, and the light guide plate molding Disclosed is a method for forming a light guide plate using an apparatus or the like. To have. And in patent document 1, as FIG. 3 refers to, the height of the pressurization part of a side surface shaping | molding apparatus is formed larger than the width | variety (thickness) of the side surface of the light guide plate for a shaping | molding. Moreover, in embodiment of patent document 1, the front and back surface shaping | molding apparatus provided so that press molding was possible in the substantially right angle direction with respect to the surface and back surface of the to-be-shaped light-guide plate was carried out in the same position as a side surface shaping | molding apparatus. An example in which molding is incorporated into one apparatus is disclosed. In this case, the pressurizing part of the side surface molding apparatus is arranged outside the front and back surface molding means so as not to interfere with the front and back surface molding means of the front and back surface molding apparatus. Similar to the case where the molding device is arranged separately from the side surface molding device, the height of the pressure part of the side surface molding device is formed larger than the width (thickness) of the side surface of the light guide plate for molding (see FIG. 5).

  Further, Patent Document 2 is known as a technique for positioning a processing target to be a light guide plate or the like. Patent Document 2 states that “in the case of a light guide plate, the side surface (light incident surface) must be a mirror surface, so in this secondary processing in which the side surface of the molded product is mirror-finished by machining after press molding. However, in the thermal transfer press molding, the upper and lower surfaces of the acrylic plate cut to a predetermined size are heated. Since the optical pattern is transferred and molded by pressing the stamper with a press, the side surface of the acrylic plate is freely deformed, resulting in a shape in which the upper and lower portions of the side surface of the molded product are projected as shown in FIG. In such a deformed state, accuracy during secondary processing cannot be ensured ”(0006).

  Patent Document 2 includes first and second base plates that move toward and away from each other, and first and second mold members that are detachably attached to the first and second base plates. A press molding apparatus that presses a workpiece with the first and second mold members, fixed to the first base plate, abutted against the first mold member, and of the first mold member. A positioning guide member for positioning; the positioning guide member also abuts on a second mold member of the second base plate when the first and second base plates approach each other, whereby the second mold member; A press molding apparatus is disclosed for positioning the frame with respect to the first base plate. The positioning apparatus further includes a positioning device for the workpiece, the positioning device including a first positioning unit serving as a reference near the positioning guide member, and a second positioning unit farther from the first positioning unit. The positioning unit abuts on a first location of the workpiece, positions the first location at a predetermined position of the first base plate, and the second positioning unit includes a second location of the workpiece. There is disclosed a press molding apparatus that abuts a portion and presses the workpiece against the first unit by pressing.

  In Patent Document 2, the object to be processed is a plate material, the first and second positioning units are in contact with side surfaces of the object to be processed, and the object to be processed is the first and second molds. A press molding device that supports the member so as not to contact the member, or the workpiece is a rectangular plate, and the first positioning unit is fixed to the first base plate, and the first corner of the workpiece. The second positioning unit is in contact with the side surface of the second corner of the workpiece, and is capable of moving forward and backward in the direction of the first corner. A press molding apparatus is disclosed. Further, in Patent Document 2, the workpiece positioning apparatus further includes a mechanism for moving the first and second base plates in the approaching / separating direction, and the first and second base plates are provided. The press molding apparatus in which the workpiece is brought into contact with the first and second mold members almost simultaneously when approaching, and the workpiece positioning apparatus are configured such that the workpiece is positioned even during press molding. There is disclosed a press molding apparatus that abuts on the side surfaces of the first and second corners and forms a processing reference for secondary processing of the processing object at the contact portion.

  Patent Document 2 discloses that the positioning plate constituting the positioning unit is in contact with the three side surfaces of the corner of the workpiece and the intermediate position on one side (see FIG. 2). In addition, it is disclosed that the positioning plate is formed thinner than the thickness of the side surface of the workpiece (see FIG. 4). Patent Document 2 states that “in thermal transfer press molding, a stamper having a thickness of 0.2 to 0.5 mm for transferring a fine pattern is mounted on a temperature control plate having a heating and cooling function, and the temperature of the stamper is adjusted by the temperature control plate. Is heated to a temperature equal to or higher than the heat softening temperature of the thermoplastic workpiece, and then a stamper is pressed against the surface of the material to transfer and form a fine pattern on the surface of the workpiece (0002).

JP 2004-82437 A JP 2006-168295 A

  However, among the conventional techniques described above, in Patent Document 1, even when the front and back surface forming device and the side surface forming device are disposed at the same position, the side surface forming device is disposed outside the front and back surface forming means. Therefore, the side surface is pressed in a state where the edge of the light guide plate for molding protrudes outside the front and back surface forming means.

  Of the above conventional techniques, in Patent Document 2, when the workpiece is subjected to thermal transfer press molding, since the surface of the workpiece is heated and pressed, the vicinity of the surface on the side surface (end surface) thereof It is described that it is free-deformed so that it protrudes, and the upper and lower portions of the side surface of the molded product have a protruding shape, and the end face cannot be formed flat simultaneously with the surface transfer molding. Therefore, in Patent Document 2, the positioning plate is positioned by coming into contact with the side surface of the workpiece, and it is assumed that secondary processing is performed in order to finish the side surface to a mirror surface. There were problems such as high costs. And in patent document 2, even if the positioning plate is formed thinner than the thickness of the side surface of a workpiece, even if such a positioning plate is used for the side surface molding apparatus of the said patent document 1, patent document As shown in FIG. 4 of FIG. 2, since the center part in the thickness direction of the side surface of the workpiece is flat, it is depressed and the burr is formed around it. There was also a problem that the secondary processing cost for finishing to a mirror surface increased. Furthermore, in Patent Document 2, since the positioning plate abuts the three side surfaces of the corner position of the workpiece and the intermediate position of one side, the ratio of each side of the workpiece is different. There is also a problem that it is difficult to position in accordance with the above.

  The present invention has been made in view of the above-described problems. With a simple configuration, the surface of a molding material to be a light guide plate or the like is molded into a predetermined shape, and its end surface is easily and reliably molded into a predetermined shape. It is an object of the present invention to provide a molding apparatus and a molding method that can be used.

In order to achieve the above object, the invention according to the first aspect of the invention provides a surface shaping means for shaping a predetermined shape on the surface of a thin plate-like molding material, and an end face for shaping the end face of the molding material into a predetermined shape. A molding apparatus comprising a molding means, wherein the surface shaping means includes mold plates that are arranged opposite to each other and are relatively close to and away from each other, and temperature control means for adjusting the molding material to a predetermined temperature. A pair of molding surfaces that mold a predetermined shape on the surface of the molding material, and the end surface molding means includes an end surface molding member that presses against the end surface of the molding material, The end surface molding member is composed of divided pieces that are divided so as to be in contact with the extended portions of the shaping surfaces when the end surface of the molding material is molded.
In order to achieve the above object, an invention according to a second aspect of the invention is characterized in that, in the first aspect of the invention, the end surface forming means includes an elastic body that separates the divided pieces from each other.
In order to achieve the above object, the invention according to claim 3 is the invention according to claim 1 or 2, wherein the end surface forming means is formed between the divided pieces and is in contact with the end surface of the molding material. It has a cooling air supply passage that opens in the molding surface.
In order to achieve the above object, the invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the end face forming means presses each divided piece against the end face of the molding material. It has the moving means to move so that it may carry out.
In order to achieve the above object, the molding device according to claim 5 is the invention according to claim 4, wherein the molding material is rectangular, and the end surface molding member corresponds to each side of the molding material. One end of the end surface molding member is fixed, and the other is connected to the moving means so as to press the molding material against the fixed one end surface molding member. It is characterized by.
In order to achieve the above object, the invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein the molding material enters between the shaping surface and the molding material. It has the support means which supports so that separation | separation from the said shaping | molding surface is possible.
In order to achieve the above object, an invention according to a seventh aspect of the present invention is the invention according to the sixth aspect, wherein the end surface forming means and the supporting means are provided so as to be movable toward and away from the mold platen. It has the frame which hold | maintains.
In order to achieve the above object, the invention according to claim 8 is the molding surface for molding the end surface of the molding material of the end surface molding member according to any one of claims 1 to 7, The side which contacts the extension part of each said shaping | molding surface protruded by the predetermined curvature radius, It is characterized by the above-mentioned.

Further, in order to achieve the above object, the invention according to claim 9 is a thin plate-like molding material formed by a pair of molding surfaces provided on molds that are arranged opposite to each other and are relatively close to each other. And forming a predetermined shape on the surface thereof by heating and pressurizing, and molding the end surface into a predetermined shape by pressing the end surface molding member relative to the end surface of the molding material, A state in which the end surface molding member is composed of divided pieces obtained by dividing the molding material in the thickness direction, and when the end surface of the molding material is molded, each divided piece is in contact with the extended portion of each shaping surface. Thus, each of the divided pieces is relatively pressed against the end surface of the molding material.
In order to achieve the object described above, the invention according to claim 10 is the invention according to claim 9, wherein the thickness of the molding material is determined during molding of the end face of the end face of the molding material or after the end face is molded. Cooling air is blown from a cooling air supply passage formed between the divided pieces divided in the direction and opened to the molding surface of the end surface molding member to cool the end surface of the molding material.
In order to achieve the above object, the invention according to claim 11 is the invention according to claim 9 or 10, wherein the end surface molding member is moved so that each divided piece presses the end surface of the molding material. Features.
In order to achieve the above object, in the invention according to claim 12, in the invention according to claim 11, when the molding material is rectangular, the end face molding corresponding to each side of the molding material. Positioning and fixing one of the opposed positions of the end surface molding member and moving the other material so as to press the molding material against the fixed one end surface molding member; The material is positioned with respect to the shaping surface.
In order to achieve the above object, an invention according to claim 13 is the invention according to any one of claims 9 to 12, wherein the end surface molding member is formed into the molding material after the end surface of the molding material is molded. The edge of the molding material is released from the molding surface by separating from the mold plate provided with the molding surface in a state of being pressed against the end surface of the molding surface, and the molding surface and the molding material A support means is inserted between the edges, the support means is separated from the mold plate provided with the shaping surface, and the molding material is separated from the shaping surface.

According to the first aspect of the present invention, the sheet-shaped molding material is heated by the temperature adjusting means of the surface shaping means, and when the molds are close to each other, the molding surface is pressed against the surface of the molding material to impart a predetermined shape. Type. The divided pieces of the end surface molding member which are divided in the thickness direction of the molding material and the molding surface is configured to extend in the thickness direction corresponding to the end surface of the molding material are each molding of the surface shaping means. Molding is performed by relatively pressing the end surface of the molding material in a state where it is in contact with the extended portions of the surface. At least in the thickness direction of the end face of the molding material, the vicinity of the surface that has been heated and easily deformed for shaping is easily and reliably formed into a predetermined shape by the divided pieces.
In the invention of claim 2, in the invention of claim 1, the divided pieces are biased to be separated from each other by the elastic body, thereby reliably contacting the extension portions of the respective molding surfaces, Therefore, the surface vicinity heated and shaped at least in the thickness direction of the end face of the molding material is easily and reliably pressed by the divided pieces and molded into a predetermined shape.
According to a third aspect of the invention, in the invention of the first or second aspect, the end surface molding member is composed of divided pieces divided in the thickness direction of the molding material. A cooling air supply passage is formed so as to open at the front end surface in contact with the end surface. During the molding of the end face of the molding material by the divided pieces of the end face molding member or when the molding of the end face is completed, the cooling air is supplied from the front end face through the cooling air supply passage formed between the split pieces, and the molding material The center position in the thickness direction of the end face of the is cooled. The end surface of the molding material is cooled while being molded by the end surface molding means, and is maintained in its shape.
According to a fourth aspect of the invention, in the invention according to any one of the first to third aspects, the divided pieces are moved and pressed against the end face of the molding material by the moving means. The end surface of the molding material is pressed by the divided pieces constituting the end surface molding member, and is easily and reliably molded into a predetermined shape.
In the invention of claim 5, in the invention of claim 4, when the molding material is rectangular, the end surface molding members arranged corresponding to each side of the molding material are fixed at positions facing each other. On the other hand, by moving the other connected to the moving means to press the molding material, two adjacent sides of the molding material are positioned in contact with one end surface molding member, and the end surface of each side is an end surface molding member Is pressed and molded into a predetermined shape.
In invention of Claim 6, in the invention in any one of Claims 1-5, when the shaping | molding to the surface of a molding material and the shaping | molding to an end surface are completed, a mold will be spaced apart and a shaping | molding surface will be opened. . At this time, the molding material is sandwiched between the end surface molding members and is separated from the other molding surface while being attached to the first molding surface. Then, the supporting means is inserted between the shaping surface and the molding material to support it, and the supporting means is moved away from the one molding surface to release the supported molding material.
According to the invention of claim 7, in the invention of claim 6, after the molding to the surface of the molding material and the molding to the end face are completed and the other mold plate is opened, the molding material is put into one molding surface. When releasing from the mold, the frame is moved away from one of the molds. The molding material is sandwiched between end surface molding members held by the frame, and is released from one molding surface. Then, the supporting means held by the frame is moved between the molding surface and the molding material to support it, and the frame is further moved away from one mold plate to completely remove the supported molding material. Release the mold. Since the end surface molding member and the support means are held by the same frame, they move in synchronization with the mold plate provided with the shaping surface, and the molding material is appropriately released.
The invention according to claim 8 is the invention according to any one of claims 1 to 7, wherein the side of the end surface molding member that contacts the extension portion of each shaping surface is predetermined on the molding surface that presses the end surface of the molding material. By projecting with a radius of curvature, the corners of the surface and end face of the molding material are formed in a shape having a predetermined radius of curvature.

In the invention of claim 9, the predetermined shape is molded by heating and pressurizing the pair of molding surfaces to the surface of the thin plate-shaped molding material. Then, the end surfaces of the molding material are relatively pressed and molded by the respective divided pieces that are divided in the thickness direction of the molding material and in contact with the extended portions of the respective molding surfaces. At least in the thickness direction of the end face of the molding material, the vicinity of the surface that is easily heated and deformed for shaping is easily and surely formed into a predetermined shape by the divided pieces.
According to a tenth aspect of the present invention, in the ninth aspect of the invention, an opening is formed in the molding surface in contact with the end surface of the molding material between the divided pieces of the end surface molding member configured by dividing in the thickness direction of the molding material. A cooling air supply passage is formed. During molding of the end surface of the molding material by the divided pieces of the end surface molding member or when the molding of the end surface is completed, cooling air is blown from the molding surface through the cooling air supply passage formed between the divided pieces, and the molding material The center position in the thickness direction of the end face is cooled. The end surface of the molding material is cooled while being molded by the end surface molding member, and is maintained in its shape.
In the invention of claim 11, in the invention of claim 9 or 10, the end face molding member is moved and the end face of the molding material is pressed by each divided piece. The end surface of the molding material is pressed by the divided pieces and is easily and reliably molded into a predetermined shape.
According to the invention of claim 12, in the invention of claim 11, when the molding material is rectangular, the end surface molding members are arranged corresponding to the respective sides of the molding material, and the end surface molding members are opposed to each other. One of the positions to be fixed is positioned and fixed, and the other is moved so as to press the molding material against the fixed one end surface molding member. Positioning is made in contact with one side, and the end surface of each side is reliably pressed between the end surface molding members to be molded into a predetermined shape.
In invention of Claim 13, in the invention in any one of Claims 9-12, when the shaping | molding to the surface of a molding material and the shaping | molding to an end surface are completed, a mold will be spaced apart and a shaping | molding surface will be opened. . At this time, the molding material is sandwiched between the end surface molding members and is separated from the other molding surface while being attached to the first molding surface. Then, by separating the end surface molding means from one mold plate, the edge of the molding material is released from one molding surface, and the support means is inserted and supported between them, and supported from one molding surface. By moving the means so as to be separated, the supported molding material is released from one molding surface and taken out.

According to the invention of claim 1, the end surface molding member is constituted by the divided pieces that are divided so as to be in contact with the extension portions of the respective molding surfaces when the end surface of the molding material is molded. A molding apparatus capable of easily and surely molding the vicinity of the molding surface in the thickness direction, which is easily heated and deformed, at least on the end surface, while molding the surface of the molding into a predetermined shape. can do.
According to the invention of claim 2, in the invention of claim 1, the end surface forming member means has an elastic body that separates the divided pieces from each other, so that the divided pieces are extended portions of the respective shaping surfaces. Therefore, it is possible to easily and surely form the vicinity of the molding surface in the thickness direction, which is easily heated and deformed, at the end face of the molding material into a predetermined shape with the divided pieces. A molding apparatus can be provided.
According to a third aspect of the present invention, in the first or second aspect of the present invention, the end surface molding means is formed between the divided pieces, and is a cooling air supply passage that opens in a molding surface that contacts the end surface of the molding material. Therefore, during or after the molding of the end surface of the molding material, cooling air is blown from the molding surface of the end surface molding member to cool the end surface of the molding material, and the end surface of the molding material is cooled by the end surface molding means. It is possible to provide a molding apparatus capable of reliably maintaining the shape in a molded state.
According to the invention of claim 4, in the invention of any one of claims 1 to 3, the end face forming means has a moving means for moving the divided pieces to press against the end face of the molding material. Thus, it is possible to provide a molding apparatus capable of easily and surely molding the end surface of the molding material with the divided pieces into a predetermined shape.
According to the invention of claim 5, in the invention according to any one of claims 1 to 4, when the molding material is rectangular, the end face molding member is arranged corresponding to each side of the molding material. One of the opposed positions of the end surface molding member is fixed, and the other is connected to the moving means so as to press the molding material against the fixed one end surface molding member. Provided is a molding apparatus in which two adjacent sides of a molding material are positioned in contact with one end surface molding member and the end surface of each side is reliably pressed between the end surface molding members and molded into a predetermined shape. can do.
According to the invention of claim 6, in the invention of any one of claims 1 to 5, the molding material can be separated from the molding surface by entering between the molding surface and the molding material. By having a supporting means to support, a molding apparatus capable of supporting the support means by allowing the supporting means to enter between the molding surface and the molding material and releasing the molding material that has been molded from one molding surface. Can be provided.
According to the invention of claim 7, in the invention of claim 6, the frame body is provided so as to be movable toward and away from the mold plate and holds the end surface forming means and the support means. After the molding to the surface of the molding material and the molding to the end surface is completed and the other mold plate is opened, the end surface molding means and the supporting means are moved synchronously, and the molding material is molded into one of the molding materials. It is possible to provide a molding apparatus that can be reliably released from the surface.
According to invention of Claim 8, in the invention in any one of Claims 1-7, in the front end surface which presses the end surface of the said molding material of the said end surface shaping | molding means, By projecting the sides in contact with each other, it is possible to provide a molding apparatus capable of forming the surface of the molding material and the corners of the end face into a shape having a predetermined radius of curvature.

According to the invention of claim 9, the end surface molding member is constituted by the divided pieces divided in the thickness direction of the molding material, and each of the divided pieces is formed by the molding when the end surface of the molding material is molded. By pressing each of the divided pieces against the end surface of the molding material while being in contact with the extended portions of the surface, at least the end surface of the molding material is heated and easily deformed in the thickness direction. It is possible to provide a molding method in which the vicinity of the mold surface can be easily and surely molded into a predetermined shape by the divided pieces.
According to the invention of claim 10, in the invention of claim 9, formed between the divided pieces divided in the thickness direction of the molding material during molding of the end surface of the molding material or after molding the end surface. Then, cooling air is blown from a cooling air supply passage that opens to the molding surface of the end surface molding member to cool the end surface of the molding material, thereby reliably maintaining the end surface of the molding material in the shape molded by the end surface molding means. It is possible to provide a molding method that can be performed.
According to the invention of claim 11, in the invention of claim 9 or 10, the end surface of the molding material is moved by the divided piece by moving the end surface molding member so that each divided piece presses the end surface of the molding material. It is possible to provide a molding method that can be easily and surely molded into a predetermined shape by applying pressure.
According to the invention of claim 12, in the invention of claim 11, when the molding material is rectangular, the end surface molding member is arranged corresponding to each side of the molding material, and the end surface One of the opposing positions of the molding member is positioned and fixed, and the other is moved so as to press the molding material against the fixed one end surface molding member, and the molding material is moved with respect to the molding surface. By positioning, two adjacent sides of the molding material are positioned in contact with one end surface molding member, and the end surface of each side can be reliably pressed between the end surface molding members and molded into a predetermined shape. A method can be provided.
According to a thirteenth aspect of the invention, in the invention according to any one of the ninth to twelfth aspects, after the end surface of the molding material is molded, the end surface molding member is pressed against the end surface of the molding material. By separating the molding material from the mold plate provided with the molding surface, the edge of the molding material is separated from the molding surface, and the support means enters between the molding surface and the edge of the molding material. The molding material can be surely released from one of the molding surfaces by separating the supporting means from the mold plate provided with the molding surface and separating the molding material from the molding surface. Possible molding methods can be provided.

First, an embodiment of the molding apparatus according to the present invention will be described in detail with reference to FIGS. 1 to 9 in the case where a light guide plate is molded as a molded product P ′ from a rectangular molding material. In the drawings, the same reference numerals are given to similar or corresponding parts.
The molding apparatus of the present invention generally includes a surface shaping means 1 for shaping a predetermined shape on a surface Pa of a thin plate-like molding material P, and an end surface shaping means 2 for shaping an end surface Pb of the molding material P into a predetermined shape. I have. The surface shaping means 1 is a pair of mold plates 10 and 11 that are arranged opposite to each other and relatively close to and away from each other, and the molding material P provided on the opposed surfaces of the mold plates 10 and 11 is adjusted to a predetermined temperature. Temperature control plates 12 and 13 constituting temperature control means, and a pair of molding surfaces 12a and 13a that mold a predetermined shape on the surface Pa of the molding material P on the surface of the temperature control plates 12 and 13, Further, the end surface molding means 2 includes an end surface molding member 20 that presses relative to the end surface Pb of the molding material P.
And the end surface shaping | molding member 20 of the shaping | molding apparatus of this invention is the surface of each temperature control board 12 and 13 which comprises the extension parts 12b and 13b of the shaping surfaces 12a and 13a, when shape | molding the end surface Pb of the molding material P. It is comprised by the division | segmentation pieces 21 and 22 divided | segmented so that each might contact | connect. Further, the end surface forming means 2 of the molding apparatus of the present invention is an elastic member that separates the divided pieces 21 and 22 from each other so as to contact the extended portions 12b and 13b of the shaping surfaces 12a and 13a when the end surface Pb of the molding material P is formed. A body 23 and a cooling air supply passage 24 that is formed between the divided pieces 21 and 22 and opens to a molding surface that contacts the end surface Pb of the molding material P are provided. Further, the molding apparatus of the present invention further includes a moving means 25 for moving the divided pieces 21 and 22 so as to press against the end face Pb of the molding material P, and the molding surfaces 12a and 13a and the molding material P after the molding is completed. And a support means 26 for supporting the molding material P so as to be separated from the shaping surfaces 12a and 13a, and an end face molding means 2 and a support means 26 provided so as to be movable toward and away from the mold plate 11. And a frame body 27 for holding.

  In the case of this embodiment, the molding material P for producing the light guide plate P ′ is a primary molding by cutting a strip-shaped resin plate extruded by an extrusion molding device with a cutting device. In the present invention, a predetermined shape is formed on at least one surface Pa of the molding material P, and at least one end surface Pb serving as the light incident surface Pb ′ of the light guide plate P ′ is formed into a predetermined shape. .

  In this embodiment, the mold plates 10 and 11 are arranged so as to face each other upward and downward. Therefore, in the following description, the template will be referred to as the upper template 10 and the lower template 11 depending on the case. The upper mold board 10 is supported by a press ram or the like, and is configured to move up and down with respect to the lower mold board 11. Temperature control plates 12 and 13 are attached to substantially the center of the opposing surfaces of the upper mold board 10 and the lower mold board 11, respectively. A sealed space forming frame 14 that forms a sealed space S with the upper mold plate 10 when the mold is closed is attached to the outer peripheral edge of the lower mold plate 11. On the upper surface of the sealed space forming frame 14, a sealing material 14a for sealing the space S when the upper mold plate 10 is in contact (when the mold is closed) is disposed. The molding apparatus in this embodiment includes a decompression means (not shown) that decompresses the sealed space S formed when the mold is closed.

  The temperature control plates 12 and 13 have a heating mechanism that heats the molding material P to a predetermined temperature and a cooling mechanism that cools the molding material to a predetermined temperature when molding is completed. Moreover, the temperature control boards 12 and 13 have the heat insulating materials 12c and 13c interposed between each template 10 and 11. FIG. The heating mechanism includes a flow path formed therein for flowing a heating fluid such as oil or steam at a predetermined temperature, a cartridge heater accommodated therein, or an electric heater such as a sheet heater disposed on the surface, a stamper. For example, a resistance heating plate that generates heat by supplying electric power to it can be used. Further, the cooling mechanism can be configured by a flow path or the like that is formed therein and allows a cooling fluid having a predetermined temperature to flow therethrough. In the case where the heating fluid and the cooling fluid are circulated in the temperature control plates 12, 13, both the fluids may be circulated through the individually provided flow paths, and both the fluids may be shared. You may comprise so that it may switch and distribute.

  The temperature control plates 12 and 13 have dimensions larger than the surface Pa of the molding material P. In the case of this embodiment, as the molding surfaces 12a and 13a that mold a predetermined shape on the surface Pa of the molding material P, a stamper is fitted into a recess formed on at least one surface of the temperature control plates 12 and 13. It is attached. In order to transfer a pattern for obtaining diffused light having a uniform luminance distribution on the light exit surface of the light guide plate P ′, a reverse pattern corresponding to the pattern is imprinted on the stamper. Surfaces around the recesses where the stampers of the temperature control plates 12 and 13 are attached are located on the same plane as the stamper, and constitute extended portions 12b and 13b of the shaping surfaces 12a and 13a. It is also possible to form a flat surface without providing recesses in the temperature control plates 12 and 13 and attach a stamper to the surfaces of the temperature control plates 12 and 13. Moreover, you may comprise the extension parts 12b and 13b by a stamper. Further, in the case of finishing the surface Pa of the molding material P smoothly, a stamper having a mirror surface is attached to the surface of the temperature control plate 12, 13 or the surface of the temperature control plate 12, 13 without providing a stamper. Can also be formed in a mirror shape. Even when the surface itself of the temperature control plates 12 and 13 is in contact with the surface Pa of the molding material P without forming a stamper to form the shaping surfaces 12a and 13a, the molding material P of the temperature control plates 12 and 13 is not formed. Peripheries that do not come into contact with the surface Pa constitute the extensions 12b and 13b of the shaping surfaces 12a and 13a.

  As shown in FIGS. 1 and 2, a frame body 27 is disposed around the temperature control plate 13 of the lower mold board 11. Guide pins 30 are erected at positions corresponding to the corners of the frame body 27 of the lower mold board 11, and guide bushes 31 inserted into the guide pins 30 are provided at corresponding corners of the frame body 27. ing. In addition, a double-acting lifting cylinder 32 is provided in the vicinity of the guide pin 30 of the lower mold board 11, and a frame body 27 is attached to an operating rod 32 a of the lifting cylinder 32. When the operating rod 32a of the elevating cylinder 32 is driven to extend, the frame body 27 is moved upward so as to be separated from the lower mold platen 11, and by being retracted, the frame body 27 is moved downward so as to be close to the lower mold platen 11. . An urging means such as a spring for urging the frame body 27 to be separated from the lower mold platen 11 is interposed between the lower mold platen 11 and the frame body 27 to replace the double-acting lifting cylinder 32. Thus, a single-acting cylinder that retracts the operating rod 32a attached to the frame body 27 can also be employed.

  A step portion 27a is formed below the inner peripheral surface of the frame body 27, and a holder 33 for holding the end surface molding member 20 at a predetermined height is disposed on the step portion 27a. The cross-sectional shape of the holder 33 is substantially L-shaped as shown in FIGS. As shown in a plan view in FIG. 1, the end surface molding member 20 is arranged corresponding to each side P1, P2, P3, P4 of the rectangular molding material P, and each of the side molding members P has a side P1, P2, It has a length (width) at which P3 and P4 can be formed over the entire length.

  In this embodiment, the end surface molding member 20 includes an upper divided piece 21 and a lower divided piece 22 that are divided in the thickness direction of the molding material P. A recess 21 a that houses an elastic body 23 such as a coil spring that biases the upper divided piece 21 away from the lower divided piece 22 behind the upper divided piece 21 (leftward in FIGS. 4 to 5). Is formed. The upper divided piece 21 and the lower divided piece 22 may be hinge-joined at their rear ends, and in such a case, the elastic body (23 that urges the two divided pieces apart by providing the hinge with a spring property. ) Can also be configured. The front end surfaces 35 and 36 (the right front end surface in FIGS. 4 to 6) that are the molding surfaces of the two split pieces 21 and 22 have a thickness suitable for molding the end surface Pb of the molding material P into a predetermined shape as will be described later. Have The molding surfaces 35 and 36 of the divided pieces 21 and 22 are molded into a smooth flat surface or a curved surface according to the shape of the end surface Pb of the molding material P, and a stamper may be attached. The end surface molding member 20 may be provided with means for heating as necessary, such as conditions for molding the end surface Pb of the molding material P. This heating means can be configured by attaching an electric heater behind the upper divided piece 21.

  A space is formed between the two divided pieces 21 and 22 by urging the two divided pieces 21 and 22 away from each other by the elastic body 23. In the present invention, the cooling air supply passage 24 for spraying the cooling fluid to the end surface Pb is formed when or after the end surface Pb of the molding material P is molded by using this space. The cooling air supply passage 24 is open between the molding surfaces 35 and 36 at the tips of the two split pieces 21 and 22. A pipe line connected to a supply means such as an air compressor for supplying cooling air to the cooling air supply passage 24 is not shown in the figure, but is configured by, for example, providing a through hole behind the upper divided piece 21. Can do. Molded cooling air is supplied to the cooling air supply passage 24 at a pressure that does not affect the shape of the end surface Pb molded with the molding material P.

  The molding surfaces 35 and 36 in contact with the end face Pb of the molding material P of the divided pieces 21 and 22 can be formed on a smooth flat surface as shown in FIG. 7A, but as shown in FIG. As shown in (b), protrusions 37 and 38 that protrude with a predetermined radius of curvature r can be formed in the vicinity of the corners of the divided pieces 21 and 22 on the side in contact with the temperature control plates 12 and 13. The shape of the end surface Pb of the molding material P molded by the divided pieces 21 and 22 formed with the protrusions 37 and 38 will be described in detail later.

  In the plan view shown in FIG. 1, the holder 33 that supports the end surface molding member 20 at a position corresponding to the left and upper two sides P <b> 1 and P <b> 2 adjacent to each other of the molding material P is attached to the step portion 27 a of the frame body 27. The tip of the operating rod 25a of a pair of cylinder 25 provided in the frame 27 as a moving means is connected to the back surface of each of the back surfaces. Further, in FIG. 1, the holder 33 that supports the end surface molding member 20 at a position corresponding to the right side and the lower sides P3 and P4 of the molding material P is positioned and fixed to the step portion 27a of the frame body 27. When the actuating rod 25a of the cylinder 25 is driven to extend in a state where the molding material P is disposed between the end surface molding members 20, the molding material P is connected to the actuating rod 25a, and the molding material P is adjacent to the left and upper sides (FIG. 1). ) Of the holder 33 at a position corresponding to the two sides P1 and P2 of the holder 33 are fixed to each other at the positions corresponding to the right side and the lower side (FIG. 1) corresponding to the two sides P3 and P4 of the molding material P. The molding material P is moved and positioned so as to press against the end surface molding member 20 of the adjacent holder 33, and subsequently, the sides P 1, P 2, P 3, and P 4 of the molding material P between the end surface molding members 20. The end faces Pb are relatively pressed to be molded into a predetermined shape. The moving means 25 for moving the end surface forming member 20 is not limited to a cylinder, and a ball screw mechanism or the like can also be used. Further, a holder 33 for supporting the end surface molding member 20 corresponding to the right and lower sides P3 and P4 of the molding material P in FIG. 1 is also slidably disposed on the step portion 27a of the frame body 27, The moving means 25 can also be connected to the back surface.

  Further, as shown in FIG. 1, a cylinder 27 is provided as a supporting means at a position corresponding to substantially the middle position of each side P1, P2, P3, P4 of the molding material P positioned as described above. 26 and a support member 26a connected to the operating rod. As shown in FIGS. 8 and 9, the support member 26 a is inserted into the frame body 27, and exceeds the molding surface 36 at the tip of the split piece 22 when the operating rod of the cylinder 26 is driven to extend. The lower surface of P can be supported (FIG. 9), and when the operating rod is retracted, it can be retracted into the holder 33 (FIG. 8). The means for moving the support member 26a of the support means 26 is not limited to the cylinder, and a ball screw mechanism or the like can also be used.

  In addition, the shaping | molding apparatus of this invention is not limited to embodiment mentioned above. For example, the pair of molds 10 and 11 facing each other can be arranged in the horizontal direction without being arranged in the vertical direction. Further, the molding apparatus of the present invention is not limited to molding the rectangular light guide plate P ′, and a predetermined shape is formed on the surface Pa of the molding material P and the predetermined shape is molded on the end surface Pb. If it is a thing, it can apply also when shape | molding another molded article. Furthermore, as shown by a chain line arrow in FIG. 9, means for blowing air between the temperature control plate 13 and the molding material P may be provided.

Next, the shaping | molding method of this invention is demonstrated in detail based on FIGS. 1-11 by the case where light-guide plate P 'is shape | molded from the rectangular molding material P using the shaping | molding apparatus comprised as mentioned above. . In the drawings, the same reference numerals are given to similar or corresponding parts.
In general, the molding method of the present invention heats and heats a thin plate-shaped molding material P by a pair of molding surfaces 12a and 13a provided on molds 10 and 11 which are arranged opposite to each other and are relatively close to each other. Pressurizing and shaping a predetermined shape on the surface Pa, and pressing the end surface molding member 20 against the end surface Pb of the molding material P to mold the end surface Pb of the molding material P into a predetermined shape. The member 20 is composed of divided pieces 21 and 22 divided in the thickness direction of the molding material P, and the divided pieces 21 and 22 are in contact with the extended portions 12b and 13b of the shaping surfaces 12a and 13a, respectively. Thus, each of the divided pieces 21 and 22 of the end surface forming means 20 is relatively pressed against the end surface Pb of the molding material P to be molded.
Furthermore, the molding method of the present invention is formed between the divided pieces 21 and 22 formed by dividing the molding material P in the thickness direction during molding of the end surface Pb of the molding material P or after molding the end surface Pb. The cooling air is blown from the cooling air supply passage 24 that opens to the molding surfaces 35 and 36 to cool the end surface Pb of the molding material P.
Moreover, the shaping | molding method of this invention moves the end surface molding member 20 so that each division | segmentation piece 21 and 22 presses with respect to the end surface Pb of the molding material P. FIG.
And when the molding material P is a rectangle, the end surface molding member 20 is arrange | positioned corresponding to each edge | side P1, P2, P3, P4 of the molding material P, respectively, and one of the mutually opposing sides of the molding material P The end surface molding member 20 corresponding to P3 and P4 is fixed at a predetermined position with respect to the shaping surfaces 12a and 13a and pressed against the end surface molding member 20 to which the two adjacent sides P3 and P4 of the molding material P are fixed. The end surface molding member 20 corresponding to the other side P1, P2 of the mutually opposing sides of the molding material P is moved so that the molding material P is positioned with respect to the shaping surfaces 12a and 13a.
Furthermore, after the end surface Pb of the molding material P is molded, the end surface molding member 20 is separated from the temperature control plate 13 of the mold plate 11 provided with the shaping surface 13a while being pressed against the end surface Pb of the molding material P. Thus, the edge of the molding material P is released from the molding surface 13a, and the support member 26a of the support means 26 is inserted between the molding surface 13a and the molding material P to support the lower surface of the molding material P. The support means 26 is further separated from the temperature control plate 13 of the mold plate 11 provided with the shaping surface 13a, and the molding material P is separated from the shaping surface 13a.

  In forming the light guide plate P ′ from the rectangular molding material P, first, the upper mold platen 10 is raised and separated from the lower mold platen 11, and the operating rod of the cylinder 25 is used as a moving means for the end surface molding member 20. 25a is retracted and the end surface molding member 20 at a position corresponding to the upper and left sides P1 and P2 of the molding material P in FIG. The material P is placed. When heating of the temperature control plate 13 of the lower mold board 11 is started, the elevating cylinder 32 is extended without placing the molding material P on the temperature control board 13 of the lower mold board 11. Driven to raise the frame 27 so as to be separated from the lower mold platen 11, the cylinder of the support means 26 is extended and driven to extend the support member 26 a, and the molding material P is removed from the temperature control plate 13 of the lower mold platen 11. It can also be supported to float.

  Next, the operating rod 25a of the cylinder 25 is driven to extend as the moving means of the end face forming member 20 to move the end face forming member 20 forward, and the positions corresponding to the upper and left sides P1 and P2 of the molding material P in FIG. The end surface forming members 20 are advanced toward the end surface forming members 20 at positions corresponding to the lower and right sides P3 and P4 facing each other, and are pressed against the adjacent end surface forming members 20 positioned and fixed. Move to. Two adjacent sides (right and lower in FIG. 1) P3 and P4 of the molding material P are brought into contact with the molding surfaces 35 and 36 of the divided pieces 21 and 22 of the corresponding fixed end surface molding member 20, and the temperature control plate Positioned with respect to thirteen stampers 13a. The extension drive of the cylinder 25 for moving the end surface molding member 20 at this time is sufficient if it is a force sufficient to position the molding material P. In addition, when the movement means 25 is provided in all the end surface molding members 20 corresponding to the four sides P1, P2, P3, and P4 of the molding material P, one of the movement means 25 at the opposite positions serves as a reference position. (For example, the position of the forward limit or the backward limit) may be maintained, and the molding material P may be positioned by driving the other moving means 25 forward. Further, when a ball screw mechanism is used as the moving means 25, the ball screw mechanism is configured to be driven and controlled by a servo motor so that the end surface forming member 20 can be controlled to move to an arbitrary position. You can also

  When the molding material P is positioned, the upper mold board 10 is lowered so as to be close to the lower mold board 11 and the mold is closed, and the molding material P is heated to a predetermined temperature by the two temperature control plates 12 and 13, and the stamper The molding surfaces 12a and 13a are pressed in a substantially perpendicular direction with a predetermined pressure to the surface Pa of the molding material P, and a pattern having a predetermined shape is transferred to the surface Pa of the molding material P for molding. At this time, the lower surface of the upper mold plate 10 abuts on the sealing material 14 a of the sealed space forming frame 14 provided on the outer peripheral edge of the lower mold plate 11, and the sealed space S is formed. When it is preferable to mold a predetermined shape on the surface Pa of the molding material P in a reduced-pressure atmosphere, the sealed space S is evacuated and decompressed by a decompression unit (not shown). Since the molding material P is heated by being in contact with the molding surfaces 12a and 13a such as a stamper, the temperature of the surface Pa to be molded is high. Therefore, in the end surface Pb of the molding material P, the vicinity of the surface Pa is easily deformed.

  Here, before the upper mold platen 10 is lowered, the upper divided piece 21 is separated from the lower divided piece 22 by the urging of the elastic body 23 as shown in FIG. In the state where the upper mold plate 10 is lowered and the molding material P is heated and pressurized between the temperature control plates 12 and 13, the upper divided piece 21 is attached with an elastic body as shown in FIG. It is pressed against the lower surface of the upper temperature control plate against the force. Accordingly, the upper divided piece 21 is in contact with the peripheral edge of the temperature control plate 12 of the upper mold board 10, that is, the extension portion 12 b of the shaping surface 12 a, and the lower divided piece 22 is the peripheral edge of the temperature control board 13 of the lower mold board 11, It will be in the state which touches the extension part 13b of the shaping surface 13a. Even when the thickness of the molding material P is different, or even when an error occurs in the closing allowance of the mold plates 10 and 11, the two split pieces 21 and 22 urged to be separated from each other by the elastic body 23. Is surely in contact with the peripheral edges of the temperature control plates 12 and 13 of the respective mold plates 10 and 11, that is, the extended portions 12b and 13b of the shaping surfaces 12a and 13a. In this state, the cylinder 25 is driven to extend so that the divided pieces 21 and 22 supported by the holder are moved forward, and the molding material P is formed on the molding surfaces 35 and 36 at the tips of the divided pieces 21 and 22 as shown in FIG. The end face Pb is pressed and molded. Since both the split pieces 21 and 22 are urged so as to be separated by the elastic body 23, they can slide while being in contact with the extension portions 12 b and 13 b of the temperature control plates 12 and 13. As described above, in the end surface Pb of the molding material P, the vicinity of the surface Pa that is in contact with the shaping surfaces 12a and 13a and is easily deformed is formed by the molding surfaces 35 and 36 at the tips of the divided pieces 21 and 22. It will be pressed and molded.

  While the end face Pb is being formed or when the end face Pb is formed, cooling air is supplied to the cooling air supply passage 24 formed between the two divided pieces 21 and 22 to form the divided pieces 21 and 22. Spray from the opening between the surfaces 35, 36. The upper and lower positions in the thickness direction of the end surface Pb of the molding material P are formed in a predetermined shape by being pressed against the molding surfaces 35 and 36 of the divided pieces 21 and 22, respectively. The cooling air is blown from the opening between the divided pieces 21 and 22 at a position in the middle of the direction to solidify and maintain its shape.

  As shown in FIG. 7A, when the molding surfaces 35 and 36 at the tips of the divided pieces 21 and 22 are formed flat, and the end surface Pb of the molding material P is thereby molded, the end surface Pb is heated. As a result, the vicinity of the upper surface and the lower surface, which are easily deformed, is surely pressed by the molding surfaces 35 and 36 at the tips of the divided pieces 21 and 22, and is molded flat. For example, when the light guide plate P ′ having a thickness of about 4 to 10 mm is formed using the divided pieces 21 and 22 shown in FIG. 7A, the corners of the end face Pb ′ with respect to the upper surface and the lower surface are shown in FIG. When the portion X in the thickness direction is 0.3 mm from the portion, the dimension Y protruding so as to protrude from the central portion in the thickness direction is only 0.04 mm. For this reason, even when the end face Pb 'is the light incident surface, bright lines and dark lines with nonuniform luminance distribution cannot be visually confirmed.

  Further, as shown in FIG. 7 (b), a protrusion having a predetermined radius of curvature r in the vicinity of the corner of the split surfaces 21 and 22 at the tip of the molding surfaces 35 and 36 and the surfaces in contact with the extended portions 12b and 13b. When the portions 37 and 38 are formed, as shown in FIG. 11, the corners of the end surface Pb ′ are formed in the same manner as the curvature radii r of the protrusions 37 and 38 of the split pieces 21 and 22, and the end surface Pb ′ As a result, almost the whole was formed into a smooth flat surface. Here, when the dimension Y of the corner portion of the end face Pb ′ is 0.05 mm or less, the bright line / dark line is not visually confirmed when the end face Pb ′ is used as the light incident surface. Has been confirmed to be uniform. Therefore, it is desirable that the curvature radius r of the protrusions 37 and 38 of the divided pieces 21 and 22 is set to 0.05 mm or less.

  As a comparison with this, as described in the prior art, the height of the front end surface of the end surface forming means is set so as not to interfere when the molds of both mold plates are closed (when the surface of the molding material is molded). When the end surface of the molding material is formed at the tip surface of the end surface forming means so as to be formed lower than the interval, as shown in FIG. 12, the end surface Pb ′ has a thickness direction from the corners of the upper surface and the lower surface. In the range of the portion x of 0.50 mm, the dimension y protruding so as to protrude from the central portion in the thickness direction was 0.08 mm. When such an end surface Pb 'is used as the light incident surface of the light guide plate P', bright lines and dark lines can be visually confirmed, and thus the luminance distribution is not uniform.

  In a state where a predetermined shape is formed on the surface Pa of the molding material P between the temperature control plates 12 and 13, and the end surface Pb is formed by the end surface forming member 20, the support means 26 has a shape as shown in FIG. The support member 26a is in a retracted / retracted state so as not to interfere with the temperature control plate 13. Thereafter, when the cooling of the molding material P is completed and the upper mold plate 10 is raised so as to be separated from the lower mold plate 11, the molding material P has a molding surface 12 a of the temperature control plate 12 on the upper surface Pa. The end surface Pb is in close contact with the shaping surface 13a of the temperature control plate 13 with the end surface Pb sandwiched between the opposing end surface molding members 20. When the lifting cylinder 32 is driven to extend from this state to raise the frame 27 so as to be slightly separated from the lower mold platen 11, the lower temperature adjusting plate 13 and the peripheral edge of the molding material P are slightly separated. At this time, as shown by the arrow of the chain line in FIG. 9, when air is blown between the temperature control plate 13 and the molding material P, the molding material P is surely and easily released from the lower temperature control plate 13. It becomes. Subsequently, the cylinder 26 of the support means is extended to drive the support member 26a into the gap between the temperature control plate 13 and the peripheral edge of the molding material P, and the lift cylinder 32 is further extended to raise the frame 27. The molding material P that has been molded is supported by the support member 26 a and is released from the temperature control plate 13 of the lower mold plate 11 as the frame body 27 is raised, so that it can be easily taken out. .

It is the top view which showed the lower mold disk of the shaping | molding apparatus of this invention. It is sectional drawing shown in order to demonstrate the frame raising / lowering mechanism of the shaping | molding apparatus of this invention. It is sectional drawing when the type | mold opening of the shaping | molding apparatus of this invention which showed the end surface shaping | molding means hold | maintained at the frame and the support means was carried out. It is a partial expanded sectional view which shows the state of the division | segmentation piece when a mold opening of the shaping | molding apparatus of this invention is carried out. FIG. 5 is a partially enlarged cross-sectional view showing a state of a divided piece when the mold is closed and the surface of the molding material is molded from the state shown in FIG. 4. FIG. 6 is a partially enlarged cross-sectional view illustrating a state in which the end surface molding member is moved forward from the state illustrated in FIG. 5 to form the end surface of the molding material. It is a partial expanded sectional view which shows the molding surface of the split piece which comprises an end surface shaping | molding member of this invention. It is a partial expanded sectional view which shows the state which the support member 26a of the support means of this invention retracted. It is a partial expanded sectional view which shows the state which the support member 26a of the support means of this invention supported the molding material. It is a partial expanded side view which shows an example of the molding material by which the end surface was shape | molded by this invention. It is a partial expanded side view which shows another example of the molding material by which the end surface was shape | molded by this invention. It is a partial expanded side view which shows the molding material by which the end surface was shape | molded by the prior art.

Explanation of symbols

P: molding material, Pa: surface, Pb: end face, 1: surface shaping means, 2: end face shaping means, 10: upper mold board, 11: lower mold board, 12: temperature control board, 12a: shaping surface, 12b: Extension part, 13: Temperature control board, 13a: Molding surface, 13b: Extension part, 20: End surface molding member,
21: Divided pieces, 22: Divided pieces, 23: Elastic body, 24: Cooling air supply passage, 25: Moving means, 26: Support means, 27: Frame body, 35: Molding surface, 36: Molding surface, 37: Projection Part 38: Projection

Claims (13)

  1. A molding apparatus comprising surface shaping means for shaping a predetermined shape on the surface of a thin plate-shaped molding material, and end face molding means for shaping an end surface of the molding material into a predetermined shape,
    The surface shaping means is a mold plate that is arranged opposite to each other and is relatively close to and away from, a temperature adjusting means that adjusts the molding material to a predetermined temperature, and a predetermined shape is transferred to the surface of the molding material. A pair of shaping surfaces for shaping a predetermined shape by
    The end surface molding means includes an end surface molding member that presses relative to the end surface of the molding material,
    The molding apparatus characterized in that the end surface molding member is composed of divided pieces that are divided so as to be in contact with the extension portions of the shaping surfaces when the end surface of the molding material is molded.
  2.   The molding apparatus according to claim 1, wherein the end surface molding unit includes an elastic body that separates the divided pieces from each other.
  3.   3. The molding apparatus according to claim 1, wherein the end surface molding means includes a cooling air supply passage formed between the divided pieces and opened to a molding surface in contact with the end surface of the molding material. .
  4.   The molding apparatus according to any one of claims 1 to 3, wherein the end surface forming means includes moving means for moving each of the divided pieces so as to press against the end surface of the molding material.
  5.   The molding material is rectangular, the end surface molding member is arranged corresponding to each side of the molding material, one of the end surface molding members facing each other is fixed, and the other is fixed The molding apparatus according to claim 4, wherein the molding device is connected to the moving means so as to press the molding material against the one end surface molding member.
  6.   The molding according to any one of claims 1 to 5, further comprising support means that enters between the molding surface and the molding material to support the molding material so as to be separated from the molding surface. apparatus.
  7.   The molding apparatus according to claim 6, further comprising a frame body that is provided so as to be movable toward and away from the mold plate and holds the end surface molding unit and the support unit.
  8.   8. The molding surface for molding the end surface of the molding material of the end surface molding member, the sides respectively contacting the extension portions of the shaping surfaces are protruded with a predetermined radius of curvature. The molding apparatus in any one.
  9. A pair of molding surfaces provided on the mold plates arranged opposite to each other and relatively close to and away from each other are heated and pressurized to form a predetermined shape on the surface thereof, and the molding material A molding method for molding the end surface of the molding material into a predetermined shape by pressing the end surface molding member relative to the end surface of
    The end surface molding member is composed of divided pieces obtained by dividing the molding material in the thickness direction, and the divided pieces are brought into contact with the extensions of the molding surfaces when the end surface of the molding material is molded. In the state, the said division | segmentation piece is relatively pressed against the end surface of a molding material, The shaping | molding method characterized by the above-mentioned.
  10.   Cooling air from the cooling air supply passage that is formed between the divided pieces divided in the thickness direction of the molding material and is opened to the molding surface of the end surface molding member during molding of the end surface of the molding material or after molding the end surface The molding method according to claim 9, wherein an end face of the molding material is cooled by spraying a slag.
  11.   The molding method according to claim 9 or 10, wherein the end surface molding member is moved so that each divided piece presses the end surface of the molding material.
  12.   In the case where the molding material is rectangular, the end surface molding member is disposed corresponding to each side of the molding material, and one of the opposing positions of the end surface molding member is positioned and fixed, and the other is The molding method according to claim 11, wherein the molding material is moved with respect to the fixed one end surface molding member so as to be positioned with respect to the shaping surface.
  13. After molding the end face of the molding material,
    By separating the end surface molding member from the mold plate provided with the molding surface in a state where the end surface molding member is pressed against the end surface of the molding material, the edge of the molding material is released from the molding surface,
    A support means is inserted between edges of the shaping surface and the molding material;
    The molding method according to any one of claims 9 to 12, wherein a support means is separated from a mold plate provided with the shaping surface, and the molding material is separated from the shaping surface.
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