JP3118602B2 - Heating / cutting device, injection molding simultaneous painting device and painting method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for simultaneous painting by injection molding, and a heating / cutting apparatus used therefor.

[0002]

2. Description of the Related Art Various injection molding simultaneous painting methods for providing a pattern or the like on the outer surface of a molded article at the same time as molding the molded article have been conventionally performed. In Japanese Patent Publication No. 50-19132, a painted sheet made of a thermoplastic resin is vacuum-formed using a female mold provided with a vent hole for vacuum molding, and then both the male and female molds are clamped to form a molten resin. A method is disclosed in which a paint sheet is integrated with the outer surface of a molded article by injecting the paint sheet into a cavity formed by the method. In this way, the simultaneous injection molding and painting method in which the vacuum molding and the injection molding are combined can pattern a complicated curved surface. Also, JP-A-6-3159
In Japanese Patent Publication No. 50, after feeding a strip-shaped painted sheet unwound from a roll between the male and female dies, and supplying the painted sheet between the two dies so that the periphery is fixed to the female parting surface with a sheet holding frame, Move the hot platen between the two molds from the retracted position outside the mold, heat and soften the painted sheet, mold the painted sheet with an injection mold, and fit it along the cavity surface,
Retract the hot platen to the retracted position outside the mold, clamp both molds,
A technique for injecting a molten resin into a cavity formed by both molds is disclosed. And when using a strip-shaped painted sheet, ease of handling after injection molding, or at the time of pre-molding or injection molding of a painted sheet using an injection mold,
In order to prevent heat and stress applied to the painted sheet from going back to the unused sheet on the upstream side, there is a method of cutting the painted sheet into one shot size before clamping. JP-A-6-315950 also discloses that a heating plate is provided with a cutting means made of a heating line, and after fixing the painted sheet with a sheet holding frame, when the heating plate approaches the painted sheet to heat and soften the painted sheet, It discloses a technique for fusing a painted sheet with a heating filament. In addition, International Publication WO95 / 18003 discloses a method in which a cutting blade is provided on a mold side, or a painted sheet is pressed against a mold by a cutting blade provided in a sheet pressing means, and when a sheet is pressed (simultaneously or before and after). )
There is also a technology for cutting a sheet with a picture by joint work of a cutting blade and a mold.

[0003]

However, in order to cut a long strip-shaped picture sheet into a size of one shot, the mold is provided with a cutting means such as a cutting blade or a heating wire. It is necessary to perform a process for providing a cutting means in a mold of a molded product, and there is a problem that when the cutting blade is worn, the mold itself or the cutting blade must be replaced. Further, in a mode in which the cutting means is provided in the sheet fixing means such as a sheet holding frame, the timing of cutting the painted sheet is preferably after fixing the painted sheet,
There is a problem that the mechanism is complicated because the respective timings need to be shifted. On the other hand, in the form in which the cutting means is provided on the hot platen, the above-mentioned timing problem does not occur unless the fixing of the painted sheet and the softening by heating are simultaneously advanced.
However, in the apparatus disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 6-315950, as shown in FIG. 7, the cutting means 20 composed of a heating wire is fixedly attached to the hot platen 10 with an L-shaped support 24. ing. Usually, the simultaneous painting apparatus for injection molding is fixedly installed on the molding machine, and the painting apparatus having a hot plate size or the like may be different depending on the tonnage of the molding machine. Therefore, in accordance with the change in the size of the mold attached to the molding machine, the size of the hot plate of the painting apparatus should not be changed as much as possible. As a result, when using a small-sized mold in the painting sheet supply direction, a painting sheet on which a pattern or the like is printed at a shorter feed pitch can be used,
Since the hot platen is the same size as it is, the part of the upstream pictorial sheet which is currently being heated and which faces the hot platen is also heated. As a result, that portion (specifically, the outer edge 51 of the clamp 5 on the upstream side in the painting sheet supply direction and the hot platen 1)
0 (the portion between the outer edge 22 on the upstream side in the supply direction of the painted sheet)) becomes unusable due to the occurrence of wrinkles or wrinkles. Therefore, there is a problem in that the painted sheet is wasted in the longitudinal direction. In addition, if there is much waste, when setting a strip-shaped painted sheet as a roll in the simultaneous injection molding painting apparatus, the number of shots that can be processed by the roll of the same diameter decreases, and the number of roll replacements increases accordingly, resulting in a smoother operation. There is also a problem that hinders serial production. Further, in the apparatus disclosed in JP-A-6-315950, the positional relationship between the cutting means and the hot platen is such that the painting sheet is supplied from above, and the cutting means 20 is positioned above the hot platen with respect to the hot platen. Is mounted on the outer edge 22, that is, upstream of the hot platen in the painting sheet supply direction. Therefore, even in this portion, the painting sheet is wasted in the longitudinal direction.

Therefore, in the present invention, the above problems can be solved, and even in a mode in which the cutting means is attached to the hot platen, the heating and heating which can reduce the waste of the painting sheet can be reduced according to the size of the molded product and the size of the mold used. An object of the present invention is to provide a cutting apparatus, a simultaneous painting apparatus for injection molding and a simultaneous painting method for injection molding using the heating / cutting apparatus.

[0005]

Therefore, in order to solve the above-mentioned problems, in the present invention, a strip-shaped painting sheet is supplied between both molds composed of a pair of molding dies, and the painting sheet supplied between the two molds is supplied. On the sheet, the heating plate is heated and softened with facing the heating plate.After that, the heating plate is evacuated to the outside from between the two dies, then the both dies are clamped, and the resin is injected into the cavity formed by both dies, A heating device having a hot plate for heating a painted sheet, which is used in an injection molding simultaneous painting method for painting the surface of a molded article with a painted sheet at the same time as molding, is provided with a cutting means for cutting the painted sheet to a size of one shot. In the provided heating / cutting device, the cutting means is configured to be displaceable in the painting sheet supply direction. Moreover, the cutting means is supported by a support tool.
The support is changed by the guide in the painting sheet supply direction.
It is configured to be fixed to a hot plate freely. As a result,
In accordance with the size of the mold that is always used, the painted sheet can be cut into one shot size without excess or shortage, thereby reducing waste of the painted sheet .

Further, an injection-mold decorating apparatus of the present invention, heat a strip picture Tsukeshi over preparative, supplied between both types consisting of a pair of molds, the decorative sheet supplied between dies Heating and softening with the plates facing each other, then withdrawing the hot plate from between the molds to the outside, then clamping both molds, injecting resin into the cavity formed by both molds, painting with molding to implement the simultaneous injection molding decorating method for attaching a picture of the surface of the molded article by the sheet, at least, a sheet supplying means for supplying between both types comprising a strip-shaped picture Tsukeshi over retrieved from a pair of molds,
In the injection-mold decorating apparatus that includes a heating means for heating the decorative sheet, and an apparatus constituting the heating means from the heating and cutting device of the prior SL with even cutting means decorative sheet.

Further, an injection-mold decorating method of the invention, heating a strip-shaped picture Tsukeshi over preparative, supplied between both types consisting of a pair of molds, the decorative sheet supplied between dies The hot plate of the device is heated and softened by facing it, then the hot plate is retracted to the outside from between both molds, then both molds are clamped, and resin is injected into the cavity formed by both molds and molded simultaneously with the injection-mold decorating method for attaching a picture of the surface of the molded article by decorative sheet, a cutting means disposed displaceably decorative sheet feed direction to the heating device having a heating plate of the decorative sheet for heating, decorative by the heating device When the sheet was heated and softened, the painted sheet was cut into a size of one shot, and the cutting position was changed according to the size of the mold to be used at all times so that the painted sheet could be cut without excess or shortage. In addition, the cutting means is supported by a support, and the support is fixed to the hot plate so as to be displaceable in the painting sheet supply direction by a guide.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a simultaneous cutting and painting apparatus for injection molding and a method of simultaneous painting with injection molding according to the present invention.

First, FIGS. 1 to 4 are explanatory views conceptually illustrating an injection molding simultaneous painting apparatus and method using the heating / cutting apparatus of the present invention, and FIG. 5 is a heating / cutting apparatus of the present invention. FIG. 6 is a plan view illustrating a positional relationship between a hot platen and a cutting unit according to one embodiment of the present invention. FIG.
FIG. 5 is an explanatory view of an example in which the positional relationship of the cutting means with respect to the hot plate is changed in accordance with the size of the mold. And FIG.
FIG. 4 is an explanatory view illustrating a fixed positional relationship between a hot platen and a cutting means in a conventional heating / cutting device. In these figures, the hatched lines indicate virtual cut surfaces.

FIG. 1 shows that a belt-shaped picture sheet S is made up of both types 1,
2 is a diagram illustrating a state in which the hot platen is inserted between the two molds in order to make the hot platen 10 face the painted sheet after being transferred and fixed to the parting surface of the mold 1 by the clamp 5 between the two molds. It is. As shown in the figure, in the present invention, a cutting means 20 for cutting a picture sheet is supported by a support 21, and the support 21 is displaceable by a guide 23 in a direction of feeding the picture sheet to the hot platen 10 of the heating / cutting apparatus. Fixed. In the same drawing, the position of the cutting means 20 with respect to the hot platen is the outer edge 22 of the outer edge of the hot plate which is on the upstream side in the painting sheet supply direction.
It is attached so that it can be displaced on the downstream side. If the displacement position range of the cutting means is set on the downstream side of the outer edge 22, it is possible to effectively cope with the reduction of the waste of the painting sheet.
However, the downstream side of the outer edge 22 of the displacement position range of the cutting means, if also be displaced to the upstream side, bigger molds in smaller heating plate, as possible out to the manner and of up moldings. The means for fixing the support 21 to the guide 23 so as to be freely displaceable is arbitrary, as long as the position of the cutting means can be semi-fixedly set. For example, the guide 23 is a cylindrical guide pin, the support 21 is a member having a round hole slidably fitted therein, and the support 21 is
(See FIG. 5). Alternatively, a plurality of screw holes may be provided on both sides of the hot plate along the painting sheet supply direction, and the support may be fixed using screws at appropriate positions. Incidentally, as in FIG. 1, the form of attaching the cutting means to the heating plate itself is the preferred form state. Thereby, the hot plate can be moved forward toward the painting sheet, and the cutting means can also be moved forward at the same time, and the driving mechanism of the cutting means can be used also .

The cutting means 20 may be a blade, a heating wire such as a nichrome wire, or an ultrasonic cutter, and is arbitrary. The blade may be in the form of cutting the entire width of the painted sheet with one blade, or in the form of running a blade narrower than the full width of the painted sheet in the width direction. In heating the heating wire, a current is usually applied to a wire having an appropriate electric resistance, such as a nickel-chromium alloy, and the wire is heated by Joule heat. Above all, the heating wire is in a form in which the heating wire comes into contact with the painting sheet and is blown off. Therefore, it is preferable in that the structure can be made simpler than that of a blade cut by mechanical driving, and the apparatus can be inexpensive. When using the heating wire, to save power and extend the life of the wire, when the hot platen is in the retracted position outside the mold, energize the wire and stop the heating plate. It is preferable to start energization of the filament just before entering. FIG. 5 is a plan view showing one embodiment of the present invention when the hot platen is viewed from the heating surface side, and shows a positional relationship between the heating wire as the cutting means 20 and the hot platen. The heating plate 10 has a rectangular shape, and the heating wire is arranged in the width direction (horizontal direction in the drawing) in parallel with the outer edge 22 on the downstream side of the outer edge 22 that is the upstream side (upper side in the drawing) of the outer edge of the heating plate 10 in the painting sheet supply direction. It is stretched over. As shown in FIG. 1, the heating wire extends over the entire heating surface of the hot platen. Thereby, as shown in FIG. 3, when the hot platen 10 approaches the painting sheet S and moves to the heating position, the heating wire 20 comes into contact with the painting sheet, and the painting sheet supplied between the two molds in the form of a band is removed. The tip side is cut to the size of one shot, and separated from the rest. In addition,
The distance of the cutting means to the heating surface of the hot platen is fixed in FIG. 1, but it can be moved forward and backward by a driving means such as a fluid pressure cylinder so that it can be cut forward by moving forward and backward every shot, or according to the mold size for each mold. The position may be set by moving forward and backward.

The heating plate 10 is preferably a heating element 11 having a heat source such as an electric heater therein as shown in FIG.
Is covered with a frame 12. In the figure, the cutting means 20 is supported by a support 21, and the support 21 is
At 3, it is attached to the frame 12 so as to be displaceable in the painting sheet supply direction. However, a configuration may be adopted in which there is no frame and the outer edge of the heating element on the upstream side in the painting sheet supply direction is the outer edge of the hot platen. The frame supports the heating element and also acts as a heat insulator, preventing heat radiation in all directions and reducing unnecessary heat loss. Although not shown, the back side of the heating element is also insulated. As can be seen from FIG. 5, the outer edge 22 is configured to cover the outer periphery of the heating element with a frame, and is not the outer edge of the heating element itself. Incidentally, the illustration shows an embodiment in which the cutting means is provided not on the downstream side of the outer edge of the heating element on the upstream side in the painting sheet supply direction but on the upstream side. Such a positional relationship is preferable for the purpose of preventing the thermal influence at the time of heating the painted sheet from going back to the unheated portion on the upstream side of the sheet. Further, the outer edge 22 is not always upward when the apparatus is installed. The upper side is a case where the painting sheet is supplied from the upper side to the lower side of the mold. Normally, this form is often used. For example, in a form in which the painting sheet is fed horizontally from the back (or front) of the mold to the front (or back), the outer edge 22 is a vertical portion of the side portion.

By using the heating / cutting device as described above,
As shown in FIG. 6, the mold size is reduced, for example, to the mold 1a.
And the mold 2a (the outlines of the molds 1 and 2 when the dotted line is shown in FIG. 1), the same heating plate 10 is used as it is without changing the heating / cutting device, and the position of the cutting means 20 is changed. By resetting (downward in the drawing), it is possible to cut the painted sheet with less waste.

The hot platen 10 itself may be a conventionally known one used in an injection molding simultaneous painting apparatus, for example, a metal or ceramic block-shaped hot plate with a built-in electric heater, or a heat-resistant plate. A so-called sheet-like heating element made of resin or metal may be used. Further, the hot plate may be provided with a vent hole for blowing out compressed air for forming the picture sheet into a vacuum compressed air. The hot plate is not limited to a single flat plate as shown in FIGS. 1 and 5, but may be a non-flat plate having a polygonal cross section or a curved cross section, for example, according to the shape of the painted sheet. It can be in shape,
Alternatively, a hot plate or the like in which a plurality of rigid partial heating elements are flexibly connected may be used. The heating / cutting device of the present invention is a device having a hot platen 10 provided with a cutting means in the above-described embodiment, and although not particularly shown, the hot plate is reciprocated between both molds and an external retracted position. It has a mechanism for moving the sheet between the two dies, and a mechanism for moving forward and backward with respect to the painted sheet. As these mechanisms, conventionally known mechanisms such as a fluid pressure cylinder are used.

A description will now be given of an injection molding simultaneous painting apparatus and a painting method of the present invention using the heating / cutting apparatus described above.
In addition, as the simultaneous injection molding painting apparatus, when the heating / cutting apparatus and the sheet supply apparatus as the sheet supply means are configured as mechanically separated and independent separate apparatuses (however, in order to operate both in cooperation with each other) Are not independent from each other when viewed from the above control signal), there is a case where they are configured as an integrated device that cannot be mechanically separated. The configuration of the simultaneous injection molding painting apparatus of the present invention may be any of these.

The present invention is characterized by the heating / cutting device and the cutting position of the painted sheet. For the other parts, the strip-shaped painted sheet is cut by one shot by a conventionally known injection molding simultaneous painting apparatus and method. It is possible to apply various techniques while performing. Therefore, the simultaneous injection-molding and painting apparatus of the present invention includes the above-mentioned heating / cutting apparatus and at least sheet supply means for supplying a belt-shaped painting sheet to between the pair of dies. Various known forms are possible, and FIGS. 1 to 4 show one form thereof. In these figures, the sheet supply means includes a chuck 3 as a sheet holding and conveying means, a chuck 4 as a sheet holding means, a clamp 5 as a sheet fixing means, and the like.

A description will be given of supply of a sheet with a picture, cutting, heat softening, preliminary molding, and injection molding. First of all,
FIG. 2 shows a state before the supply of the painting sheet. The leading end of the band-shaped picture sheet S unwound from the roll R is held by the chuck 3 from the front and back. Then, from this state, the painted sheet is supplied between the molds to be in a state before the sheet is cut as shown in FIG. That is, the chuck 3 moves downward while holding the painting sheet S, and conveys the painting sheet to a position where the chuck 4 located below the outside of the mold can grip the leading end of the painting sheet. When the chuck 4 completes gripping the front end of the painting sheet, the chuck 3 releases the gripping of the painting sheet,
The user moves upward to the outside of the mold, returns to the original position, and grips the painting sheet in preparation for the next shot. Next, the clamp 5 always located between the molds moves forward (to the left in the drawing) toward the mold 1 and presses and fixes the painted sheet against the parting surface of the mold 1. The supply of the painted sheet between the molds is completed. The clamp 5 has, for example, a rectangular frame shape so as to surround the cavity of the mold 1 and press the painted sheet. The operation of moving the clamp 5 toward and away from the mold 1 is performed by a known method. For example, although not shown, when a mechanism driven by a hydraulic cylinder or an ejector pin is provided in the mold 1, holes penetrating the mold 1 in the direction of the mold 2 are formed at four corners of the cavity periphery of the mold 1. A mechanism for connecting the tip of the sliding rod inserted into the hole to the clamp 5, connecting the base of the sliding rod to the ejector plate, and moving the clamp to and away from the mold 1 in conjunction with the ejector pin. It is. Then, the hot platen 10 of the heating / cutting device moves from the retracted position outside the mold to between the molds, and moves to a position facing the painted sheet to be heated. In addition, heating
The position of the cutting means of the cutting device is adjusted in advance to an optimal position in the painting sheet supply direction. This state is shown in FIG.

It is optional whether or not a sheet fixing means such as a clamp for fixing the position of the painted sheet is finally included in the sheet supply means. What is necessary is just to supply a sheet with a picture between molds as a sheet supply means. For example, sheet fixing means may be provided on the heating / cutting device side. When the hot platen of the heating / cutting device approaches the painted sheet, the painted sheet is pressed against a parting surface or the like and fixed. Specifically, for example, the frame on the outer periphery of the heating element is a frame projecting from the heating element heating surface, and the painting sheet is pressed by this frame to heat the painting sheet without contacting the heating surface. The mold 1 is usually called a female mold because the cavity surface is concave as shown in the figure, and the mold 2 is usually called a male mold because the cavity surface is convex. However, the cavity surface does not necessarily have to have the mold 1 concave and the mold 2 convex. On the other hand, the mold 1 has a vent hole for preforming in a form in which a painted sheet is preformed by an injection molding die. Then, the vent hole is unnecessary. As the material of the mold, a known material made of metal such as iron or ceramics is used.

Next, as shown in FIG. 3, cutting and heating softening of the painting sheet S are performed. The hot platen 10 of the heating / cutting device moves forward (to the left in the drawing) and moves to a position where it contacts the clamp 5. The heating surface of the hot platen is heated at a predetermined distance from the painted sheet, and the cutting means 20 provided on the hot plate comes into contact with the painted sheet and cuts the painted sheet. The cutting position of the painted sheet is set to be downstream of the outer edge 22 which is the upstream side of the hot plate in the painted sheet supply direction and upstream of the outer edge 51 of the clamp 5 which is upstream of the painted sheet supply direction. It is preferable to cut the painted sheet at a position as close to the clamp 5 as possible from the viewpoint of preventing the waste of the painted sheet. Thus, the painted sheet is cut with less waste. The parting surface of the mold 1 is provided with a receiving groove 6 on a surface portion facing the cutting means 20 so as not to hinder the cutting action when the cutting means is a heating wire. FIG. 3 shows a state just before the painting sheet is cut. However, in this case, if the upstream end of the heating element of the hot platen 10 is located on the upstream side of the outer edge 51 of the clamp as shown in FIG. 6, after cutting, the chuck 3 is retracted and the roll R is appropriately wound. The heating element is pulled up so that the cut end of the heating sheet comes upstream from the upstream end of the heating element. By doing so, it is possible to prevent the painted sheet for the next shot from being thermally damaged by the hot platen. Note that, unlike the hot platen 10, the clamp 5 is usually replaced integrally with the mold as a member attached to each mold.

Then, after or simultaneously with the heating and softening of the painting sheet, air is sucked in from a ventilation hole (not shown) provided in the mold 1 to form the painting sheet and bring it into close contact with the cavity surface of the mold 1 (depending on the shape). In some cases, this prepainted sheet forming is omitted). After molding, the hot platen 10 is moved and retracted from between the two dies to a retracted position outside the dies. Then, both types 1, 2
Close the mold. FIG. 4 shows the state after sheet molding and mold clamping. In addition, as shown in FIG.
A receiving groove 7 serving as a concave portion for accommodating the clamp so that the clamp 5 does not disturb the mold clamping is provided on a surface portion facing the clamp. Then, if the resin is injected into the cavity formed by both molds and the mold is opened, a molded article whose surface is painted by the painted sheet is obtained at the same time as molding.

As the painted sheet that can be used in the present invention, a conventionally known sheet in simultaneous painting by injection molding can be used and is not particularly limited. Further, the painting sheet may be either a laminate sheet or a transfer sheet. For example, a resin sheet having moldability is used as a base material of the painted sheet. As the resin sheet, for example,
A single layer or a laminate of two or more sheets of a sheet made of vinyl chloride resin, acrylic resin, ABS (acrylonitrile-butadiene-styrene copolymer), poamide resin, polypropylene, polyester such as polybutylene terephthalate, thermoplastic elastomer, etc. is used. . As the molding resin, a conventionally known resin in simultaneous painting with injection molding can be used, and there is no particular limitation. For example, in the case of a thermoplastic resin, a polyolefin resin such as polyethylene and polypropylene, a vinyl chloride resin, an acrylic resin, an ABS (acrylonitrile-butadiene-styrene copolymer) resin, a polycarbonate resin, a styrene resin, and an AS (acrylonitrile-styrene copolymer) And a curable resin, such as an unsaturated polyester resin, a curable acrylic resin, a two-component curable urethane resin, and an epoxy resin.

The term "painting" as used in the present invention means, in addition to simply giving a visible pattern such as a picture, a character or a figure to a molded product, a pattern that is not visible, or a hard coating, And the like. As the visible pattern, a known pattern such as an ink layer formed by printing or the like or a metal thin film formed by vacuum deposition or the like is used. The term “injection molding” as used in the present invention refers to not only injection of “thermo-fused thermoplastic resin” used in general injection molding, but also “injection of thermosetting or two-component reaction-curing resin in a molten state at room temperature. Injecting a “cured product” is also included.

[0023]

According to the present invention, for a pictorial sheet prepared as a strip, cutting is provided between the sheet areas of the pictorial portion for one shot in the longitudinal direction for cutting the sheet as a discarded and useless part. The length of the margin can be shortened according to the size of the molded product, even when using the same size hot platen. As a result, the cost of the painted sheet can be reduced. In particular, it is effective in a case where a cost is required for printing a thick sheet or a painting pattern. Also, since the margin for cutting is short, when setting a strip-shaped painted sheet as a roll in the simultaneous injection molding painting apparatus, even with the same roll diameter, a larger number of shots can be performed at once, and the number of roll replacements can be reduced. Therefore, smooth continuous production is possible.

[Brief description of the drawings]

FIG. 1 is a conceptual explanatory view illustrating one embodiment of the present invention (part 1: before cutting a sheet).

FIG. 2 is a conceptual explanatory view illustrating one embodiment of the present invention (part 2: before sheet supply).

FIG. 3 is a conceptual explanatory view illustrating one embodiment of the present invention (part 3: sheet cutting and heating).

FIG. 4 is a conceptual explanatory view illustrating one embodiment of the present invention (part 4: after sheet molding and mold clamping).

FIG. 5 is a plan view illustrating a positional relationship between a hot platen and a cutting means in one embodiment of the heating / cutting device of the present invention.

FIG. 6 is a conceptual explanatory view corresponding to FIG. 1 in which the position of the cutting means is changed with respect to the hot platen when the mold size is small.

FIG. 7 is an explanatory diagram illustrating a positional relationship between a hot platen and a cutting unit in a conventional heating / cutting device.

[Explanation of symbols]

 1, 1a type (female type) 2, 2a type (male type) 3 chuck (sheet gripping and conveying means) 4 chuck (sheet gripping means) 5 clamp (sheet fixing means) 6 receiving groove 7 receiving groove 10 hot plate 11 heating element Part 12 Frame 20 Cutting means (heating line, etc.) 21 Support 22 Outer edge of hot plate on the upstream side in the supply direction of painted sheet 23 Guide 24 L-shaped support S Painted sheet

Claims (3)

(57) [Claims] 1. A strip-shaped painted sheet is supplied between two molds composed of a pair of molding dies, and a heating plate is opposed to the painted sheet supplied between the two molds to be heated and softened. After the mold is retracted to the outside from between the molds, the molds are clamped, the resin is injected into the cavity formed by the molds, and the surface of the molded product is painted with a painted sheet at the same time as molding. A heating device having a hot plate for heating the painted sheet used in the attaching method, wherein a heating means for cutting the painted sheet to a size of one shot is provided. The means are supported by supports
And the support is further supplied with a painted sheet by a guide.
A heating / cutting device fixed to a hot plate so that it can be displaced in any direction . 2. A method strip-shaped picture Tsukeshi over preparative, supplied between both types consisting of a pair of molds, the decorative sheet supplied between both types are opposed to a platen is heated softened, then After the hot plate is retracted from between the two molds to the outside, both molds are clamped, and resin is injected into the cavity formed by both molds. to implement simultaneous decorating method, at least, an injection comprising a sheet supply means for supplying between both types comprising a strip-shaped picture Tsukeshi over retrieved from a pair of molds, and a heating means for heating the decorative sheet in-mold decorating apparatus, the heating means consisting of heating and cutting device according to claim 1 Symbol <br/> mounting comprising also cutting means decorative sheet, injection-mold decorating apparatus. The 3. A strip of picture Tsukeshi over preparative, supplied between both types consisting of a pair of molds, the heating plate is heated and softened so as to face the heating device decorative sheet supplied between dies After that, the hot plate is retracted to the outside from between the two dies, then the two dies are closed, resin is injected into the cavity formed by both dies, and the surface of the molded product is painted on the painted sheet at the same time as molding. in the injection-mold decorating method of, the heating plate to the cutting means for decorative sheet heating as the heating device
A sheet provided by a heating device, which can be displaced in the direction of supply of the painted sheet via a support and a guide.
During the heating and softening of the above, by the cutting means,
Cutting to a size of one shot, injection-mold decorating method.