JP5779446B2 - Transfer decoration mold and transfer decoration device - Google Patents

Description

  The present invention relates to a transfer decoration mold and a transfer decoration device.

  A product in which the surface of a molded product of metal or resin is decorated is used in various fields such as automobiles, home appliances, mobile phones, personal computers and the like. The surface of the molded product is decorated, for example, by bringing a transfer sheet having a transfer layer into contact with the surface of the molded product, and then transferring the pattern of the transfer layer to the molded product. However, when the surface of the molded product to be transferred has a three-dimensional shape, it is difficult to bring the transfer sheet into contact with the surface of the molded product. Therefore, when transferring to a three-dimensional molded product, for example, a pressure forming apparatus shown in Patent Document 1 is used.

JP 2002-79573 A

When the object to be decorated is a metal body, the pressure for pressing the transfer sheet against the metal body needs to be increased to some extent. This is because the transfer layer is in close contact with the surface of the metal body.
Further, when the surface of the object to be decorated has a deep three-dimensional shape, it is difficult to evenly adhere the transfer sheet to the surface of the object to be decorated even if a pressure forming apparatus is used. This is because it is difficult to uniformly apply a sufficient pressure.

  An object of the present invention is to easily and reliably decorate the surface of a body to be decorated with a transfer layer.

  Hereinafter, a plurality of modes will be described as means for solving the problems. These aspects can be arbitrarily combined as necessary.

  A mold for transfer decoration according to an aspect of the present invention is a mold used in a transfer decoration device that transfers a transfer layer to a decorated object by pressing the transfer sheet against the object to be decorated with a medium. is there. This mold has a first mold and a second mold. A 1st type | mold has a mounting part which can mount a to-be-decorated body in an inner surface. The second mold is clamped with the first mold to form a cavity between the second mold and the transfer sheet disposed on the object to be decorated. A gap is secured between the edge of the mounting portion and the outer edge of the cavity. The gap has a first gap and a second gap that is longer in the inner and outer directions of the placement portion than the first gap.

Thus, after arrange | positioning a transfer sheet in the position facing the surface of a to-be-decorated body, a medium is inject | poured into a cavity. The medium presses the transfer sheet against the object to be decorated. As a result, the transfer layer is transferred to the object to be decorated. Therefore, even if the surface of the object to be decorated has a three-dimensional shape with a deep aperture, air accumulation is unlikely to occur between the transfer sheet and the object to be decorated, and the adhesion between the transfer sheet and the object to be decorated is improved. improves. That is, the transfer layer is reliably transferred to the object to be decorated.
Further, as a medium for pressing the transfer sheet toward the object to be decorated, for example, a molten resin is used, so that heat is applied to the transfer sheet together with pressure. As a result, the transfer sheet can be pressed against the object to be decorated while being softened by the heat of the medium, and the transfer layer can be easily transferred to the object to be decorated.

  Furthermore, if the second gap is provided in a portion where the transfer sheet is likely to come into contact with the object to be decorated, the play amount of the transfer sheet at that portion increases, and as a result, the contact pressure between the transfer sheet and the object to be decorated. Decreases. That is, it becomes difficult for the transfer sheet to come into contact with the object to be decorated before the medium is injected. As a result, air accumulation is unlikely to occur when the medium is injected into the cavity. That is, transfer failure is unlikely to occur.

The first gap may correspond to the side portion of the placement portion, and the second gap may be provided corresponding to the corner portion of the placement portion. In addition, the corner | angular part of a mounting part contains the projection part formed in the side part other than a corner part.
In this case, the portion where the transfer sheet easily comes into contact with the object to be decorated is a corner, but since the second gap is provided at the corner, the transfer sheet is less likely to come into contact with the object to be decorated. Further, since the first gap is provided corresponding to the side portion of the mounting portion, the amount of medium used can be reduced, and further, the molding machine can be prevented from being enlarged.

The length of the second gap may be in the range of 2 to 10 times the length of the first gap.
In this case, the transfer sheet is less likely to come into contact with the object to be decorated before the medium is injected without extremely increasing the amount of the medium used.

A mold for transfer decoration according to another aspect of the present invention is a mold used for a transfer decoration device that transfers a transfer layer to a body to be decorated by pressing the transfer sheet against the body to be decorated with a medium. It is. This mold has a first mold and a second mold. A 1st type | mold has a mounting part which can mount a to-be-decorated body in an inner surface. The second mold is clamped with the first mold to form a cavity between the second mold and the transfer sheet disposed on the object to be decorated. A gap portion that is at least part of a gap between the edge portion of the mounting portion and the outer edge portion of the cavity is larger than the gap in the mold clamping direction of the first mold and the second mold of the cavity.
Furthermore, if a gap is provided in a portion where the transfer sheet is likely to come into contact with the object to be decorated, the play amount of the transfer sheet at that portion increases, and as a result, the contact pressure between the transfer sheet and the object to be decorated is increased. descend. That is, it becomes difficult for the transfer sheet to come into contact with the object to be decorated before the medium is injected. As a result, air accumulation is unlikely to occur when the medium is injected into the cavity. That is, transfer failure is unlikely to occur.

The length of the gap may be in the range of 2 to 10 times the length of the gap in the cavity clamping direction.
In this case, the transfer sheet is less likely to come into contact with the object to be decorated before the medium is injected without extremely increasing the amount of the medium used.

A mold for transfer decoration according to another aspect of the present invention is a mold used for a transfer decoration device that transfers a transfer layer to a body to be decorated by pressing the transfer sheet against the body to be decorated with a medium. It is. This mold has a first mold and a second mold. A 1st type | mold has a mounting part which can mount a to-be-decorated body in an inner surface. The second mold is clamped with the first mold to form a cavity between the second mold and the transfer sheet disposed on the object to be decorated. The cavity includes a first flow path and a second flow path that extends from a location where the medium is supplied toward a corner of the mounting portion and has a larger cross-sectional area than the first flow path.
The second flow path extends from the location where the medium is supplied toward the corner of the placement portion. Therefore, the medium is sufficiently supplied to the corners of the placement unit. As a result, the transfer is reliably performed also at the corners of the placement portion. That is, transfer failure is unlikely to occur.

The 1st channel may be formed over the whole to-be-decorated object. The second flow path may be formed so as to extend from the location where the medium is supplied toward the corner of the placement portion.
In this case, the medium is reliably supplied to the corner portion of the placement portion through the second flow path.
The second flow path may be a groove formed on a surface facing the first mold of the second type.
In this case, the second flow path can be formed by processing the second mold.

  A transfer decoration device according to still another aspect of the present invention includes the above-described transfer decoration mold and a medium injection device that injects a medium into a cavity.

The manufacturing method of the transcription | transfer decoration article which concerns on the further another viewpoint of this invention is a manufacturing method of the transcription | transfer decoration article using said transcription | transfer decoration apparatus, Comprising: The following processes are provided.
◎ Place the object to be decorated on the placement part.
◎ A transfer sheet is placed on the object to be decorated.
◎ Clamp the first and second molds.
◎ Press the transfer sheet against the object to be decorated by injecting the medium into the cavity.

  In the transfer decoration mold and the transfer decoration device according to the present invention, the surface of the object to be decorated can be simply and reliably decorated with the transfer layer.

Sectional drawing which shows the structure of a transcription | transfer decoration apparatus. Sectional drawing which shows the state which pulled the decorating sheet to the 1st type | mold. The figure which shows the state which the mold clamping was completed. Sectional drawing which shows the state of resin injection | pouring. Sectional drawing which shows the state of one side opening. Sectional drawing which shows the state which took out the transcription | transfer decoration article. Sectional drawing which shows the principal part of a transcription decoration apparatus. The schematic diagram which shows the shape of a cavity. The schematic sectional drawing of a 1st type | mold and a 2nd type | mold. The schematic sectional drawing of a 1st type | mold and a 2nd type | mold. The schematic diagram which shows the shape of a cavity. The schematic sectional drawing of a 1st type | mold and a 2nd type | mold. The schematic diagram which shows the shape of a cavity. The schematic sectional drawing of a 1st type | mold and a 2nd type | mold. The schematic diagram which shows the shape of a cavity. The schematic sectional drawing of a 1st type | mold and a 2nd type | mold. The schematic diagram which shows the shape of a cavity. The schematic sectional drawing of a 1st type | mold and a 2nd type | mold. The schematic diagram which shows the shape of a cavity. The schematic sectional drawing of a 1st type | mold and a 2nd type | mold.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(1) Transfer decoration product and transfer decoration device FIGS. 1-6 is a figure which shows the manufacturing process of transfer decoration product all. The transfer decorative article 31 is manufactured by decorating the object to be decorated 20 using the transfer sheet 12 as a decorative sheet.

  The transfer decoration device used for manufacturing the transfer decoration product 31 includes a transfer decoration mold 34 including a first mold 1 and a second mold 2, a transfer sheet holding mechanism 35, and a medium injection device 37. Yes. The transfer decorative article 31 includes a body to be decorated 20 having a convex portion 20a, and a transfer layer 12a formed on the surface of the body to be decorated 20, and is manufactured through the following manufacturing steps.

(2) Transfer Sheet The transfer sheet 12 includes a base sheet 12b and a transfer layer 12a formed on the base sheet 12b. The base sheet 12b is a sheet body that supports the transfer layer 12a. As the substrate sheet 12b, a known transfer sheet substrate sheet can be used. The constituent material of the base sheet 12b includes polyester resins such as polyethylene terephthalate, polypropylene resins, acrylic resins, polycarbonate resins, polyamide resins, polyimide resins, olefin resins, urethane resins, and acrylonitrile butadiene styrene resins. At least one synthetic resin selected from the group consisting of The base sheet 12b is a single layer sheet formed from the above synthetic resin, a laminated sheet in which two or more single layer sheets are laminated, or a copolymer sheet using the above synthetic resin. In particular, in the method for producing a transfer decorative article according to each embodiment, a base sheet such as polyethylene terephthalate resin having good dimensional stability and not easily deformed by printing and drying is selected.

  The transfer layer 12a includes, for example, a pattern layer that expresses characters and patterns, and an adhesive layer that improves the adhesion between the object to be decorated and the transfer layer. A hard coat layer that secures the strength of the surface of the object to be decorated 20 and improves scratch resistance or an anchor layer that improves interlayer adhesion may be provided, or a plurality of similar layers such as a plurality of design layers may be provided. . A release layer for improving the peelability of the transfer layer 12a from the base sheet 12b may be provided between the base sheet 12b and the transfer layer 12a. The pattern layer or the like is formed on the base sheet 12b by a printing method such as a gravure printing method, a screen printing method, or an offset printing method, or a coating method such as a gravure coating method, a roll coating method, or a comma coating method.

(3) Decorated body The decorated body 20 is, for example, a metal press plate having a convex portion 20a, a resin molded body, glass, or the like. Although the pretreatment may not be performed on the surface of the object to be decorated 20, any of the following treatments may be performed.
・ Surface treatment such as alumite treatment (when decorating body 20 is aluminum), frame treatment, plasma treatment, etc. ・ Surface treatment such as application of adhesive to facilitate formation of transfer layer 12a ・ Transfer layer 12a is bonded Affixing the easy-to-do sheet As the surface treatment and covering material of the object to be decorated 20, it is necessary to select a material suitable for each combination of the object to be decorated 20 and the transfer layer 12 a formed on the surface. .
The to-be-decorated body 20 has the peripheral part 20b around the convex-shaped part 20a. The peripheral edge part 20b extends smoothly from the convex part 20a, and is an edge part of the entire body to be decorated 20.

(4) 1st type The 1st type | mold 1 is formed with the mounting part 1A in which the to-be-decorated body 20 is arrange | positioned protruded from the inner surface. 1 A of mounting parts are convex shapes corresponding to the shape of the back surface of the to-be-decorated body 20. FIG. In addition, 1 A of mounting parts may be formed in planar shape or a concave shape. Moreover, the 1st type | mold 1 is comprised so that the transfer sheet 12 may be arrange | positioned as a decorating sheet along the to-be-decorated body 20 in the case of mold clamping. The transfer sheet 12 is placed between the body to be decorated 20 and the second mold 2 at the stage where the placement of the body to be decorated 20 has been completed on the placement portion 1 </ b> A of the first mold 1. The transfer sheet 12 includes a transfer layer 12a and a base sheet 12b, and the transfer layer 12a decorates the surface of the object to be decorated. The transfer sheet 12 is, for example, a roll-shaped long film developed and arranged at the position.

(5) 2nd type | mold The 2nd type | mold 2 is formed with the cavity surface 2A which has a concave shape along the surface of the to-be-decorated body 20, and is to be decorated by clamping with the 1st type | mold 1 A cavity V into which resin can be injected is formed between 20 and the cavity surface 2A. The cavity surface 2A is defined by an annular protrusion 2A, and the inner surface of the protrusion 2A is the outer edge 2d of the cavity V.

(6) Transfer Sheet Holding Mechanism As the transfer sheet holding mechanism 35, the first mold 1 is provided with a first clamp 4 and a second clamp 5 that are elastically biased toward the mold surface 1a. Specifically, as shown in FIG. 1, the first clamp 4 is provided at a position closer to the mold surface 1 a than the second clamp 5. The first clamp 4 has an operating rod 6 and a movable plate 7. The operating rod 6 passes through the inside of the first mold 1. The movable plate 7 is in a space 1 </ b> B provided inside the first mold 1. The operating rod 6 is attached to the movable plate 7. The second clamp 5 has an operating rod 8 and a movable plate 9. The operating rod 8 passes through the inside of the first mold 1. The movable plate 9 is in a space 1 </ b> B provided inside the first mold 1. The operating rod 8 is attached to the movable plate 9.

  The movable plate 9 is provided at a position farther from the mold surface 1 a than the movable plate 7, and the operation rod 8 penetrates the movable plate 7 and is attached to the movable plate 9. In the space 1B, the movable plate 7 is urged in a direction away from the mold surface 1a by an elastic member 7a disposed between the movable plate 7 and the wall surface of the space 1B on the mold surface 1a side. The movable plate 9 is connected to the movable plate 7 via an elastic member 9a, and the elastic member 9a biases the movable plate 9 in a direction away from the mold surface 1a. As a result, the clamps 4 and 5 are elastically biased toward the mold surface 1a. The space 1B is provided with a fixed plate 10 at a position closer to the mold surface 1a than the movable plates 7 and 9.

  When the movable plate 9 receives a pressing force from an eject rod, an air cylinder or the like and moves in a direction approaching the mold surface 1a of the first mold 1 against the elastic member 9a, the movable plate 7 also moves in the same direction via the elastic member 9a. The actuating rods 6 and 8 move the first clamp 4 and the second clamp 5 away from the mold surface 1a. At this time, the transfer sheet 12 is held between the first clamp 4 and the second clamp 5. When the movable plate 9 further moves in a direction approaching the mold surface 1a, the movable plate 7 comes into contact with the fixed plate 10 and stops. However, the movable plate 9 moves to the mold surface 1a against the elastic member 9a even after the movable plate 7 stops. As a result, the second clamp 5 is separated from the first clamp 4 and is at a position where the transfer sheet 12 is allowed to move.

  On the other hand, when the movable plate 9 does not receive the pressing force of the eject rod, the air cylinder, etc., the movable plate 9 receives the elastic urging force of the elastic member 9a and moves away from the mold surface 1a of the first mold 1. The movable plate 7 also receives the elastic biasing force of the elastic member 7a and moves in a direction away from the mold surface 1a of the first mold 1. That is, the first clamp 4 and the second clamp 5 are close to the mold surface 1 a, and the second clamp 5 comes into contact with the first clamp 4 to hold and hold the transfer sheet 12.

(7) Medium Injection Device The second mold 2 includes a gate 11 that injects and injects a molten resin (an example of a medium) 30 as the medium injection device 37. The gate 11 is formed on the cavity surface 2 </ b> A so as to face the surface of the object to be decorated 20 disposed on the placement unit 1 </ b> A. Then, in a state where the first mold 1 and the second mold 2 are clamped, a medium is injected from the gate 11 into the cavity V.

(8) Medium The molten resin 30 to be injected is a liquid having viscosity or a molten resin having fluidity. The molten resin may be either a thermoplastic resin or a thermosetting resin. However, the molten resin 30 injected into the cavity V is used only for pressing the transfer sheet 12 against the surface of the object to be decorated 20. Therefore, the used molten resin 30 is not discarded but reused. For this purpose, for example, a thermoplastic resin is used as the molten resin. When the molten resin 30 is a thermoplastic resin, it is put in a high temperature state when the transfer sheet 12 is pressed against the surface of the object to be decorated 20, and then softens by applying heat again even if it becomes solid at a low temperature. Therefore, reuse is easy. Examples of the thermoplastic resin include PC / ABS, PE, ABS, PS, SAN, EVA, PVC, PMMA, PA, POM, and PBT.

(9) Processing procedure of resin molding As shown in FIG. 1, the object to be decorated 20 is placed on the placement portion 1 </ b> A of the first mold 1 using a manipulator (not shown), and the second mold 2 and the first mold 1 are arranged. The transfer sheet 12 is arranged between the decorated object 20 arranged. At this time, the object to be decorated 20 is sucked and held by the suction portion 13 provided in the first mold 1.

  Next, after the transfer sheet 12 is sandwiched between the first clamp 4 and the second clamp 5 and the transfer sheet 12 is heated as necessary, the first clamp 4 and the second clamp 5 are moved as shown in FIG. The transfer sheet 12 is moved along the surface of the object to be decorated 20 by moving in the direction of the type 1 mold surface 1a. At this time, the transfer sheet 12 is sucked and held by the suction unit 13 provided in the first mold 1.

  As shown in FIG. 3, when the clamping of the first mold 1 and the second mold 2 is completed, the space between the cavity surface 2A of the second mold 2 and the transfer sheet 12 disposed on the surface of the object to be decorated 20 In addition, a cavity V is formed.

  Next, as shown in FIG. 4, molten resin 30 is injected into the cavity V from the gate 11 of the second mold 2. At this time, the transfer sheet 12 is pressed toward the surface of the object to be decorated 20 by the molten resin 30 injected into the cavity V, and as a result, the transfer sheet 12 is securely bonded to the surface of the object to be decorated 20. . Here, when the molten resin 30 injected into the cavity V has a high temperature, the molten resin 30 heats the transfer sheet 12 and further heats the surface of the object to be decorated 20. The transfer layer 12a of the transfer sheet 12 is more reliably transferred to the surface. The temperature of the injected molten resin is set to be 280 ° C. or higher, for example, and the first mold 1 and the second mold are set to be 80 ° C. or higher, for example.

  As shown in FIG. 5, after the molten resin 30 is cured, the second mold is separated from the first mold, the mold clamping is released, and the transfer sheet 12 is sandwiched between the first clamp 4 and the second clamp 5. It leaves | separates from the surface of the to-be-decorated body 20 as it is. Thereafter, as shown in FIG. 6, the transfer decorative article 31 is pushed out by the push rod (not shown) provided on the first die 1 and taken out, and the push rod (not shown) provided on the second die 2 is taken out. The molten resin 30 cured by the above is extruded, and the transfer sheet 12 is restarted.

  In the obtained transfer decorative article 31, the surface of the object to be decorated 20 is reliably decorated by the transfer layer 12a. When a thermoplastic resin is used as the molten resin 30, another treatment such as heating the cured resin back to the molten resin is performed, and the resin is reused as a medium to be injected into the cavity V.

(10) Second Embodiment In the second embodiment, a pressurizing mechanism for increasing the pressure of the molten resin 30 in a state where the molten resin 30 is injected into the cavity V is provided. FIG. 7A shows a state immediately after the molten resin is injected, and FIG. 7B shows a state where the injected molten resin is compressed.

  As shown in FIG. 7, a slide mold 3 is provided inside the cavity surface of the second mold 2 as a pressurizing mechanism for increasing the pressure of the molten resin 30 in the cavity V. The slide mold 3 can be moved relative to the second mold 2 in the mold clamping direction, and the slide mold 3 is attached in a direction away from the first mold 1 between the slide mold 3 and the second mold 2. An elastic member 3a is provided. When the molten resin 30 is injected after clamping, the slide mold 3 is held at a position retracted from the cavity surface of the second mold 2 (FIG. 7A), and after the injection of the molten resin 30 is completed. The slide mold 3 is advanced toward the first mold 1 against the elastic member 3a (FIG. 7B). As a result, the area of the cavity V is reduced, the injected molten resin 30 is compressed, and the pressing force of the transfer sheet 12 to the entire surface of the object to be decorated 20 is increased, so that the transfer to the object to be decorated 20 is performed. The transfer by the layer is more reliably performed.

In the method for manufacturing a transfer decorative article according to each embodiment of the present invention, the transfer sheet 12 is brought into close contact with the surface of the object to be decorated 20 and the transfer layer 12a is transferred using pressure and heating by the molten resin 30. . The pressurization is a direct pressurization to the transfer sheet 12, and the heating is a direct heating to the transfer sheet 12 and a heating to the object to be decorated 20. Since the transfer sheet 12 is brought into close contact with the surface of the object to be decorated 20 by a fluid such as a molten resin 30, not only the surface of the object to be decorated 20 is smooth but also the case of a fine uneven shape such as embossing or embossing. However, the molten resin 30 flows into the concavo-convex shape, the transfer sheet 12 adheres to the concavo-convex shape with high accuracy, and the transfer layer 12a can be transferred to the concavo-convex shape with high accuracy. Or even if it is a large uneven | corrugated shape, the transfer layer 12a can be accurately transferred to the corner of the uneven shape.
Moreover, since it is the continuous pressurization by the flow of the molten resin 30 that gradually expands from the inflow point of the molten resin 30, the transfer sheet 12 and the object to be decorated 20 in the process of closely contacting the transfer sheet 12 It is also possible to effectively prevent the occurrence of so-called air pockets that create air pockets between them.

  Further, in the method for producing a transfer decorative article according to each embodiment of the present invention, a material having good dimensional stability and hardly deformed by printing and drying can be selected for the base sheet 12b. Transfer can be performed using the transfer sheet 12 with high accuracy. Therefore, as a result, it is possible to manufacture the transfer decorative product 31 with high positional accuracy between the position and size of the pattern and the uneven shape of the object to be decorated 20.

(11) Cavity shape and effects (first embodiment)
The shape of the cavity V and its effect will be described with reference to FIGS. As shown in FIG. 8, the mounting portion 1A is generally rectangular and has four sides and four corners. The cavity V has a plan view shape that spreads outward from the placement portion 1 </ b> A of the first mold 1.
As described above, the mounting portion 1A is quadrangular in a plan view and has a convex shape. The mounting portion 1A has a side portion 1b and a corner portion 1c in a plan view. Further, the edges of the mounting portion 1A are all edge portions 1d. The to-be-decorated body 20 has a thin plate shape along the placement portion 1A. That is, the to-be-decorated body 20 has a dish shape as a whole, and includes a convex portion 20a and a peripheral edge portion 20b protruding from the four sides of the convex portion 20a.

  More specifically, the cavity V has a mold clamping direction gap V <b> 1 between the mold clamping directions of the first mold 1 and the second mold 2. Further, as shown in FIG. 9, the cavity V has a gap V <b> 2 extending in the inner and outer plane directions of the placement portion 1 </ b> A at a position corresponding to the side portion 1 b of the placement portion 1 </ b> A. The gap V2 is formed between the edge 1d corresponding to the side 1b and the outer edge 2d of the cavity V. The width W2 of the gap V2 is the same as or approximately the same as the height H of the mold clamping direction gap V1. The height H and the width W2 are, for example, 0.7 to 1.5 mm. Further, as shown in FIG. 10, the cavity V has a gap V3 extending in the inner and outer plane directions at a position corresponding to the corner portion 1c of the mounting portion 1A. The gap V2 is formed between the edge 1d corresponding to the corner 1d and the outer edge 2d of the cavity V. The gap V3 protrudes inward and outward of the placement portion 1A from the gap V1. The gap V3 has a shape like a part of a circle in plan view as shown in FIG. 8, but may have another shape. The width W3 of the gap V3 is longer than the height H and the width W2. The width W3 of the gap V3 is the distance from the corner 1c of the mounting portion 1A to the longest portion from the outer periphery of the gap V3.

  The width W3 of the gap V3 is preferably 2 to 10 times the height H, and more preferably 5 to 7 times.

The width W3 of the gap V3 is preferably 2 to 10 times the width W2, and more preferably 5 to 7 times.
In the numerical ranges described above, in each case, the effect of eliminating the defect is obtained when it is twice or more, and an excellent effect is obtained when it is five times or more. Further, 10 times or less has a certain effect in reducing shot volume (resin use amount) and film area, and 7 times or less provides an excellent effect.

In this case, the portion where the transfer sheet 12 is likely to come into contact with the object to be decorated 20 is the corner 1c of the object to be decorated 20, but since the width W3 is set large at the corner 1c, the transfer sheet 12 is not covered. The possibility of contacting the decorative body 20 can be reduced. Therefore, as shown in FIGS. 11 and 12, when the molten resin 30 is injected, the molten resin 30 gradually expands from the gate 11 and continuously pressurizes the transfer sheet 12 to be decorated. Press to 20 As described above, in the process of bringing the transfer sheet 12 into close contact, an air pocket is hardly generated between the transfer sheet 12 and the object to be decorated 20.
Moreover, since the extension margin of the transfer sheet 12 is large, the shape followability of the transfer sheet 12 is improved. Therefore, ink cracks are unlikely to occur at the corner 1c of the placement portion 1A.
Moreover, since the clearance gap V2 is provided corresponding to the side part 1b of the to-be-decorated body 20, the usage-amount of a medium can be reduced and also the enlargement of the medium injection | pouring apparatus 37 can be prevented.

  If the gap at the corner of the mounting portion is the same as the height unlike the above embodiment, the transfer sheet contacts the object to be decorated at the corner of the mounting portion only by closing the mold. Only that part may be in the transfer state first. This is because the mold is already hot. In that case, when the medium spreads while pushing the transfer sheet, the transfer sheet is wrinkled by the heat and pressure of the molten resin. Then, the wrinkles move, but the transfer sheet stops at the portion of the object to be decorated that is in contact with the object to be decorated, causing an air pocket. As a result, a portion of the air pool becomes a transfer error. In the present embodiment, the above problem is solved.

(12) Shape of the cavity and the effect (second embodiment)
The shape of the cavity V and the effect by it are demonstrated using FIGS. The description of the same structure as in the above embodiment is omitted.

  As is apparent from the drawing, the cavity V has a gap V4 extending in the inner and outer plane directions of the mounting portion 1A in the entire mounting portion 1A (that is, the side portion 1b and the corner portion 1c). The width W4 of the gap V4 is preferably 2 to 10 times, more preferably 5 to 7 times the mold clamping direction gap V1.

  In this case, the portion where the transfer sheet 12 easily comes into contact with the object to be decorated 20 is the corner 1c of the object to be decorated 20, but the width W4 including the corner 1c is set large. Can reduce the possibility of contact with the object to be decorated 20. Therefore, when the molten resin 30 is injected, the molten resin 30 gradually expands from the gate 11 and continuously pressurizes the transfer sheet 12 and presses it against the object to be decorated 20. As described above, in the process of bringing the transfer sheet 12 into close contact, an air pocket is hardly generated between the transfer sheet 12 and the object to be decorated 20.

(13) Cavity shape and its effect (third embodiment)
The shape of the cavity V and its effect will be described with reference to FIGS. The description of the same structure as in the above embodiment is omitted.

In this embodiment, as is apparent from the drawing, the cavity V has a gap V2 extending in the inner and outer plane directions of the mounting portion 1A over the entire periphery of the mounting portion 1A (that is, the side portion 1b and the corner portion 1c). ing. The width W2 of the gap V2 is the same as or about the same as the mold clamping direction gap V1.
Further, in this embodiment, the cavity V has a flow path space V5 extending from the gate 11 toward the corner 1c of the placement portion 1A. The channel space V5 has a channel cross-sectional area larger than the gap V1, which is another part. The flow path space V5 is realized by a groove formed in the cavity surface 2A of the second mold. Therefore, the height H2 of the flow path space V5 is larger than the height H1 of the gap V1.

  In this embodiment, the injected molten resin 30 quickly flows toward the corner portion 1c of the placement portion 1A through the flow path space V5. Therefore, a sufficient medium is supplied at the corner 1c of the placing portion 1A, and as a result, the transfer sheet 12 is reliably pressed against the object to be decorated 20. That is, transfer mistakes are unlikely to occur.

  If the channel space is not formed and the gap in the mold clamping direction is sufficiently small, the injected molten resin flows linearly with respect to the corner when flowing from the gate toward the corner. It is thought that it does not go forward but tries to bend and flow to avoid corners. Therefore, the molten resin may not be sufficiently supplied to the corner portion of the placement portion. The present embodiment solves the above problem.

(14) Cavity shape and its effect (fourth embodiment)
The shape of the cavity V and its effect will be described with reference to FIGS. The description of the same structure as in the above embodiment is omitted.

As is apparent from the figure, the cavity V has a gap V4 extending in the inner and outer plane directions of the mounting portion 1A around the entire mounting portion 1A (that is, the side portion 1b and the corner portion 1c). The width W4 of the gap V4 is preferably 2 to 10 times, more preferably 5 to 7 times the mold clamping direction gap V1.
The cavity V has a flow path space V5 extending from the gate 11 toward the corner 1c of the placement portion 1A. The channel space V5 has a channel cross-sectional area larger than the gap V1, which is another part. The flow path space V5 is realized by a groove formed in the cavity surface 2A of the second mold.
In this embodiment, the gaps at the corners 1c are increased, and the flow paths toward the corners 1c are formed, so that transfer errors at the corners 1c are unlikely to occur.

(15) Cavity shape and effects thereof (fifth embodiment)
The shape of the cavity V and its effect will be described with reference to FIGS. The description of the same structure as in the above embodiment is omitted.
The cavity V has a gap V2 extending in the direction of the inner and outer planes of the mounting portion 1A at a position corresponding to the side portion 1b of the mounting portion 1A. The width W2 of the gap V2 is the same as or approximately the same as the height H of the mold clamping direction gap V1. Further, the cavity V has a gap V3 extending in the inner and outer plane directions at a position corresponding to the corner portion 1c of the mounting portion 1A. The gap V3 protrudes inward and outward of the placement portion 1A from the gap V1. The gap V3 is shaped like a part of a circle in plan view. The width W3 of the gap V3 is longer than the height H and the width W2. The width W3 of the gap V3 is the distance from the corner 1c of the mounting portion 1A to the longest portion from the outer periphery of the gap V3.
The cavity V has a flow path space V5 extending from the gate 11 toward the corner 1c of the placement portion 1A. The channel space V5 has a channel cross-sectional area larger than the gap V1, which is another part. The flow path space V5 is realized by a groove formed in the cavity surface 2A of the second mold.

  In this embodiment, since the outer clearance of the corner 1c is large and a fluid space is formed toward the corner 1c, a transfer mistake at the corner 1c hardly occurs. Furthermore, since the gap between the side portions 1b is reduced, the amount of medium injected can be reduced.

(16) Effects of Embodiment The above embodiment can be expressed as follows.
(A) In 1st Example and 5th Example, the transcription | transfer decoration metal mold | die 34 presses the transfer sheet 12 with respect to the to-be-decorated body 20 with a medium, and the to-be-decorated body 20 is the transfer layer 12a. It is the type | mold used for the transcription | transfer decoration apparatus which transcribe | transfers to. The mold 34 has a first mold 1 and a second mold 2. 1st type | mold 1 has 1 A of mounting parts which can mount the to-be-decorated body 20 in an inner surface. The second mold 2 is clamped with the first mold 1 to form a cavity V between the second mold 2 and the transfer sheet 12 arranged on the object to be decorated 20. A gap is secured between the edge 1d of the mounting portion 1A and the outer edge 2d of the cavity V (that is, the outer edge of the inner surface of the second mold 2). The gap has a gap V2 (an example of a first gap) and a gap V3 (an example of a second gap) that is longer than the gap V2 in the inside and outside of the placement portion 1A.

Thus, after arrange | positioning the transfer sheet 12 in the position which opposes the surface of the to-be-decorated body 20, it is the molten resin 30 (an example of a medium) in the cavity V formed between the 2nd type | mold 2 and the transfer sheet 12. Inject. The molten resin 30 presses the transfer sheet 12 against the object to be decorated 20. Therefore, even if the surface of the object to be decorated 20 has a three-dimensional shape with a deep aperture, air accumulation is unlikely to occur between the transfer sheet 12 and the object to be decorated 20, and the transfer sheet 12 and the object to be decorated 20. Adhesion with is improved. That is, the transfer layer 12 a is reliably transferred to the object to be decorated 20.
Further, by using the molten resin 30, heat is applied to the transfer sheet 12 together with pressure. As a result, the transfer sheet 12 can be pressed against the object to be decorated 20 while being softened by the heat of the molten resin 30, and the transfer layer 12 a can be easily transferred to the object to be decorated 20.

  Furthermore, if the gap V3 is provided in a portion where the transfer sheet 12 is likely to come into contact with the object to be decorated 20 (for example, the corner portion 1c of the placement portion 1A), the play amount of the transfer sheet 12 at that portion increases. As a result, the contact pressure between the transfer sheet 12 and the object to be decorated 20 decreases. That is, it becomes difficult for the transfer sheet 12 to come into contact with the object to be decorated 20 before the molten resin 30 is injected. As a result, when the molten resin 30 is injected into the cavity V, air accumulation is unlikely to occur. That is, transfer failure is unlikely to occur.

  (B) The gap V2 corresponds to the side portion 1b of the placement portion 1A, and the gap V3 is provided to correspond to the corner portion 1c of the placement portion 1A. In this case, the portion where the transfer sheet 12 is likely to come into contact with the decorated body 20 is the corner portion 1c, but since the gap 1 is provided at the corner portion 1c, the transfer sheet 12 comes into contact with the decorated body 20. It becomes difficult. Moreover, since the clearance gap V2 is provided corresponding to the side part 1b of the mounting part 1, the usage-amount of the molten resin 30 can be reduced, and also the enlargement of a molding machine can be prevented.

(C) The width W3 of the gap V3 is in the range of 2 to 10 times the width V2 of the gap V2.
In this case, it becomes difficult for the transfer sheet 12 to come into contact with the object to be decorated 20 before the molten resin 30 is injected without excessively increasing the amount of the molten resin 30 used.

  (D) In the first example, the second example, the fourth example, and the fifth example, the transfer decoration mold 34 is the object to be decorated with the transfer sheet 12 by the molten resin 30 (an example of a medium). 20 is a mold used in a transfer decoration device that transfers the transfer layer 12a to the object to be decorated 20 by being pressed against the decorative member 20. The mold 34 has a first mold 1 and a second mold 2. 1st type | mold 1 has 1 A of mounting parts which can mount the to-be-decorated body 20 in an inner surface. The second mold 2 is clamped with the first mold 1 to form a cavity V between the second mold 2 and the transfer sheet 12 arranged on the object to be decorated 20. A gap V3 or V4 (an example of a gap) that is at least a part of a gap between the edge 1d of the mounting portion 1A and the outer edge 2d of the cavity V is the first mold 1 and the second mold of the cavity V. 2 is larger than the gap V1 in the mold clamping direction.

  If the gap V3 or V4 is provided in a portion where the transfer sheet 12 is likely to come into contact with the object to be decorated 20 (for example, the corner portion 1c of the placement portion 1A), the play amount of the transfer sheet 12 at that portion increases. As a result, the contact pressure between the transfer sheet 12 and the object to be decorated 20 decreases. That is, it becomes difficult for the transfer sheet 12 to come into contact with the object to be decorated 20 before the molten resin 30 is injected. As a result, when the molten resin 30 is injected into the cavity V, air accumulation is unlikely to occur. That is, transfer failure is unlikely to occur.

(E) The width W3 of the gap V3 or the width W4 of the gap V4 is in the range of 2 to 10 times the length of the gap V1 in the mold clamping direction of the cavity V.
In this case, it becomes difficult for the transfer sheet 12 to come into contact with the object to be decorated 20 before the molten resin 30 is injected without excessively increasing the amount of the molten resin 30 used.

  (F) In 3rd Example, 4th Example, or 5th Example, the transfer decoration metal mold 34 presses the transfer sheet 12 with respect to the to-be-decorated body 20 with the molten resin 30 (an example of a medium). By doing so, it is a mold used for a transfer decoration device that transfers the transfer layer 12a to the object to be decorated 20. The mold 34 has a first mold 1 and a second mold 2. 1st type | mold 1 has 1 A of mounting parts which can mount the to-be-decorated body 20 in an inner surface. The second mold 2 is clamped with the first mold 1 to form a cavity V between the second mold 2 and the transfer sheet 12 arranged on the object to be decorated 20. The cavity V has a gap V1 (an example of the first flow path) and a flow path space V5 (a second flow path of the second flow path) that extends from the gate 11 toward the corner 1c of the mounting portion 1A and has a larger cross-sectional area than the gap V1. One example).

  The channel space V5 extends from the gate 11 toward the corner 1c of the placement portion 1A. Therefore, the molten resin 30 is sufficiently supplied to the corner portion 1c of the placement portion 1A. As a result, the transfer layer 12a is reliably transferred. That is, transfer failure is unlikely to occur.

(G) The gap V <b> 1 is formed over the entire body to be decorated 20. The flow path space V5 is formed so as to extend from the gate 11 to the corner 1c of the placement portion 1A.
In this case, the molten resin 30 is reliably supplied to the corner portion 1c of the placement portion 1A through the flow path space V5.

(H) The flow path space V5 is a groove 2B formed on the surface 2A of the second mold 2 facing the first mold 1.
In this case, the flow path space V5 can be formed by processing the second mold 2.

(17) Other Embodiments Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the invention. In particular, a plurality of embodiments and modifications described in this specification can be arbitrarily combined as necessary.

(A) The shape of a mounting part, a to-be-decorated body, and a cavity is not limited to the said embodiment. Various shapes may be adopted depending on the type of product.
(B) In said embodiment, the to-be-decorated body 20 shows the example mounted in the mounting part 1A of the 1st type | mold 1 in the state which the peripheral part contact | abutted to the type | mold surface 1a of the 1st type | mold. However, the mounting portion 1A formed on the first mold 1 is in a state where the decorated body 20 is mounted on the mounting portion 1A, and the peripheral portion 20b of the decorated body 20 is the first mold 1. The height may be set so as to be separated from the mold surface 1a.

  (C) A member that reduces friction, such as Teflon (registered trademark) or a coated ring, may be disposed on the surface of the first clamp 4 and the second clamp 5 that holds the transfer sheet 12. In this way, when the transfer sheet 12 is pressed against the convex portion 20a of the object to be decorated 20 before mold clamping, the transfer sheet 12 is allowed to move, and the object to be decorated 20 is not stretched forcibly. It is possible to follow the convex portion 20a.

  (D) In said embodiment, although the unevenness | corrugation is not formed in the surface of the to-be-decorated body 20, the to-be-decorated body 20 may be provided with the penetration part, for example, and the unevenness | corrugation may be formed in the surface. Even in this case, the molten resin (medium) 30 presses the transfer sheet 12 in close contact with the penetrating portion to reliably transfer the transfer layer 12a to the object to be decorated 20.

  (E) In the above embodiment, the surface of the object to be decorated 20 is only decorated with the transfer layer 12a. However, the first mold 1 is also provided with a gate for injecting resin, and the surface of the object to be decorated 20 is decorated. In addition, the resin portion may be formed on the back surface of the object to be decorated 20 simultaneously with the decoration by the transfer layer 12a. In addition, a temperature adjusting mechanism that adjusts the temperature of the mold may be provided in the first mold 1 to adjust the temperature of the object to be decorated 20. If it carries out like this, when the to-be-decorated body 20 is a metal body, the transfer layer of a transfer sheet will become easy to transfer with respect to the surface of the to-be-decorated body 20 ripened by the temperature control mechanism.

  (F) In the above embodiment, the transfer decoration device is arranged in the vertical direction (vertical direction), but may be arranged in the horizontal direction (lateral direction).

  (G) In the above-described embodiment, an example in which the transfer sheet 12 having the transfer layer 12a is used has been described. However, instead of this, a pattern is formed on the plain base sheet or the base sheet with respect to the surface of the object 20 to be decorated. You may make it the structure which decorates integrally the insert sheet | seat attached | subjected etc. as it is. Moreover, in said embodiment, although the example which expand | deploys and arrange | positions the transfer sheet 12 in the position facing the surface of the to-be-decorated body 20 made the roll-shaped long film was shown, it matches with the external shape of the to-be-decorated body 20. What is cut in this way may be arranged, or any shape larger than the object to be decorated 20 (for example, a rectangular sheet) may be used.

  The present invention relates to a transfer decorative product used in various fields such as automobiles, household appliances, mobile phones, personal computers, etc., regardless of interior and exterior products, and a transfer layer on the surface of the object to be decorated. It can be widely used for the production of formed transfer decorations.

DESCRIPTION OF SYMBOLS 1 1st type | mold 1A Mounting part 1B Space part 1a Mold surface 1b Side part 1c Corner | angular part 1d Edge part 2 2nd type | mold 2A Cavity surface 2B Groove part 2d Outer edge part 3 Slide type | mold 3a Elastic member 4 1st clamp 5 2nd clamp 6 Actuating rod 7 Movable plate 7a Elastic member 8 Actuating rod 9 Movable plate 9a Elastic member 10 Fixed plate 11 Gate 12 Transfer sheet 12a Transfer layer 12b Substrate sheet 13 Suction part 20 Decorating body 20a Convex part 20b Peripheral part 30 Molten resin 31 Transfer decoration product 34 Transfer decoration mold 35 Transfer sheet holding mechanism 37 Medium injection device

Claims (9)

A mold used in a transfer decoration device that transfers a transfer layer to the object to be decorated by pressing the transfer sheet against the object to be decorated with a molten resin ,
A first mold that can be placed on the object to be decorated and has a placement part on the inner surface corresponding to the shape of the back surface of the object to be decorated;
A shape along the surface of the object to be decorated that forms a cavity capable of injecting a molten resin between the first mold and the transfer sheet arranged on the object to be decorated. And a second mold formed with a cavity surface having
A gap is secured between the edge of the mounting portion and the outer edge of the cavity,
The gap is closed and the first gap provided corresponding to the side portions of the mounting section, and a second gap provided corresponding to the corner portions of the mounting section,
The mold for transfer decoration , wherein the second gap is longer than the first gap in the inner and outer directions of the mounting portion . The length of the said 2nd clearance gap is a metal mold | die for transcription | transfer decoration of Claim 1 which exists in the range of 2-10 times the length of the said 1st clearance gap. A mold used in a transfer decoration device that transfers a transfer layer to the object to be decorated by pressing the transfer sheet against the object to be decorated with a molten resin,
A first mold that can be placed on the object to be decorated and has a placement part on the inner surface corresponding to the shape of the back surface of the object to be decorated;
A shape along the surface of the object to be decorated that forms a cavity capable of injecting a molten resin between the first mold and the transfer sheet arranged on the object to be decorated. And a second mold formed with a cavity surface having
The gap that is at least part of the gap between the edge of the placement part and the outer edge of the cavity is larger than the gap in the mold clamping direction of the first mold and the second mold of the cavity. Transfer decoration mold. The length of the said clearance gap part is a metal mold | die for transcription | transfer decoration of Claim 3 which exists in the range of 2-10 times the length of the gap | interval of the said mold clamping direction of the said cavity. A transfer decorative mold for transferring a transfer layer to the object to be decorated by pressing the transfer sheet against the object to be decorated with a molten resin,
A first mold that can be placed on the object to be decorated and has a placement part on the inner surface corresponding to the shape of the back surface of the object to be decorated;
A shape along the surface of the object to be decorated that forms a cavity capable of injecting a molten resin between the first mold and the transfer sheet arranged on the object to be decorated. And a second mold formed with a cavity surface having
The cavity has a first flow path and a second flow path that extends from a portion to which the molten resin is supplied toward a corner of the placement section and has a larger cross-sectional area than the first flow path. Die for transfer decoration. The first flow path is formed over the entire placement unit,
The transfer decoration mold according to claim 5, wherein the second flow path is formed so as to extend toward a corner portion of the placement portion from a location where the molten resin is supplied. The transfer decoration mold according to claim 6, wherein the second flow path is a groove formed on a surface of the second mold that faces the first mold. A mold for transfer decoration according to any one of claims 1 to 7,
A transfer decoration device comprising a medium injection device for injecting the molten resin into the cavity. It is a manufacturing method of the transcription | transfer decoration goods using the transcription | transfer decoration apparatus of Claim 8, Comprising:
Placing the object to be decorated on the placement section,
Placing the transfer sheet on the object to be decorated,
The second mold is clamped to the first mold,
A method for producing a transfer decorative product, wherein the molten sheet is injected into the cavity to press the transfer sheet against the object to be decorated.

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