JPH05212754A - Simultaneous molding and patterning mold - Google Patents

Abstract

PURPOSE:To provide the subject mold hard to generate wrinkles, having a simple internal mechanism and free in the shape of a cavity forming part. CONSTITUTION:The movable mold of a simultaneous molding and patterning mold is equipped with the frame body slidable and movable in the opening and closing direction of the mold and the recessed part receiving the frame body 2 is provided to a parting surface 3 so as not to come into contact with a cavity forming part 4 but to surround the periphery thereof and a plurality of suction holes 6 are provided to the receiving recessed part 5 and a vent hole 7 is formed between the inside surface of the frame body 2 and the receiving recessed part 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold for simultaneous painting with which a molding can be obtained in which no trace of suction holes remains on the painting surface.

[0002]

2. Description of the Related Art Conventionally, there has been a mold for simultaneous painting which can obtain a molded product having no trace of suction holes on the painting surface, as shown in the front view of FIG. The molding simultaneous painting die is provided with a plurality of slide blocks 15 in the movable female die 18, which are slidable in the opening / closing direction of the die. Each slide block 15 is housed in a recess for storage provided at intervals on a parting surface surrounding the cavity forming recess 17, and when the slide block 15 is moved to the fixed male die side, it is adjacent to the adjacent slide block 15. A groove 16 extending from the cavity forming portion is formed by the parting surface. Further, each of the grooves 16 is provided with a suction hole.

In this mold, as shown in FIGS. 10 and 11, a groove 16 is formed between adjacent slide blocks 15 and disappears at the time of simultaneous painting during molding. The decorative film could be made to follow the cavity forming recess 17 of the movable female die 18 without being provided in the forming recess 17. 10 is a cross-sectional view of the movable die of FIG. 9 showing the state of the die during the molding of the decorative film, and FIG. 11 is a DD sectional view of the movable die of FIG. is there.

[0004]

However, since the film is not sucked in the direction in which the accommodating recess is arranged and is only sucked through the groove 16 between the adjacent slide blocks 15, the film is unevenly sucked and wrinkles are formed. There was a problem that it was likely to occur.

Further, since each slide block 15 slides as a separate body, the internal mechanism of the die becomes complicated.

Further, since the storage recess is provided adjacent to the cavity forming recess 17 in order to form the groove 16 extending from the cavity forming recess 17, it becomes difficult to design a mold near the peripheral portion of the cavity forming recess 17 and the cavity is formed. There is a problem that the shape of the forming recess 17 is limited.

[0007] Therefore, an object of the present invention is to provide a molding simultaneous painting die in which wrinkles are less likely to occur, the internal mechanism of the die is simple, and the shape of the cavity forming portion is free.

[0008]

In order to achieve the above object, the simultaneous molding / painting mold of the present invention is a movable mold for simultaneous molding / painting, and is slidable in the opening / closing direction of the mold. The housing has a frame, and the housing recess for housing the frame is provided on the parting surface so as to surround the cavity forming portion without contacting the cavity forming part. The housing recess is provided with a plurality of suction holes. The vent is formed between the inner surface and the storage recess.

[0009]

EXAMPLES Examples of the mold for simultaneous painting according to the present invention will be described below. FIG. 1 is a front view showing an embodiment of a movable die for simultaneous painting with molding of the present invention, FIG. 2 is a sectional view of the movable die of FIG. 1 is a BB sectional view of the movable die of FIG. 1 showing the state of the die at the time of starting the supply of fluid, FIG. 4 is a sectional view of the movable die of FIG. FIG. 6 is a cross-sectional view of the movable die of FIG. 1 showing the state of the die at the time of forming the film, and FIG. 6 is a AA of the movable die of FIG.
FIG. 7 is a cross-sectional view, FIG. 7 is a BB cross-sectional view of the movable die of FIG. 1 showing the state of the die at the time of discharging the fluid, and FIG. 8 shows an embodiment of the movable die vent hole of the die for simultaneous molding and painting of the present invention. It is a front view.

1 is a movable type, 2 is a frame, 3 is a parting surface, 4 is a cavity forming portion, 5 is a recess for storing, 6 is a suction hole, 7 is a vent, 8 is a paint film, 9 is a clamp, 1
Reference numeral 0 is a piston member, 11 is a coil spring, 12 is a cylinder hole, 13 is a supply passage, and 14 is a fluid.

The movable die 1 is a female die having a bowl-shaped cavity forming portion 4. The movable die 1 according to the present invention is
Other than the female type having a bowl-shaped concave portion as in the embodiment, for example, a male type having a convex portion, or the central portion of the pot raised from the parting surface of the movable die 1 like a lemon squeezer. A composite of female and male types is also possible.

The parting surface 3 of the movable die 1 is provided with a storage recess 5 so as not to contact the cavity forming portion 4 but to surround the periphery thereof. The shape of the storage recess 5 is
It has a circular ring shape according to the shape of the outer peripheral edge of the cavity forming portion 4. Of course, the shape of the storage recess 5 according to the present invention may be determined in consideration of the size of the mold, the ease of suction, and the like, and also in the above embodiment, other than the shape of the outer peripheral edge of the cavity forming portion 4. In addition, for example, a polygonal ring shape may be used.

A plurality of suction holes 6 are provided in the storage recess 5. Since the suction hole 6 sucks the air in the storage recess 5, the size and position of the suction hole 6 can be freely designed without being directly affected by the shape of the cavity forming portion 4.

The movable die 1 is provided with a frame body 2 which is slidable in the opening / closing direction of the die and can be housed in the housing recess 5. The frame body 2 is a circular ring made of metal. Further, the inner diameter of the frame body 2 is designed to be slightly larger than the inner diameter of the storage recess portion 5, and when the frame body 2 is stored in the storage recess portion 5, a ring is formed between the inner surface of the frame body 2 and the storage recess portion 5. Vent holes 7 are formed. Further, cylinder holes 12 are provided at two opposite positions on the bottom surface of the recess 5 for accommodation, the piston member 10 and the coil spring 11 are arranged in the cylinder hole 12, and one end of the piston member 10 is provided with the movable die 1 of the frame body 2.
It is continuous with the side surface. The coil spring 11 is compressed by moving the piston member 10 in the fixed mold direction. Therefore, when the force for compressing the coil spring 11 does not act on the piston member 10, the frame body 2 is housed in the storage recess 5, and the force for compressing the coil spring 11 begins to act on the piston member 10. The frame body 2 moves to the fixed mold side. In order to exert a force on the piston member 10, it is sufficient to press the piston member 10 with a fluid 14 such as compressed air or pressure oil, and the cylinder hole 12 is provided with a supply passage 16 for supplying the fluid 14.

As the material of the frame body 2 according to the present invention, in addition to the metal used in the above embodiment, a material having heat resistance such as ceramic may be used. Further, when the frame body 2 is stored in the storage recess 5, the surface on the fixed side thereof is the parting surface 3
It may be flush with or may be recessed from the parting surface 3. The ventilation hole 7 is not limited to the ring-shaped one as in the above embodiment, but may be, for example, one having a large number of grooves formed on the inner side surface of the frame body 2 as shown in FIG. Further, the place and size of the vent hole 7 may be appropriately set according to the shape of the cavity. For example, the size of the vent hole 7 may be different such that the vent hole 7 for sucking a portion with a large rising is large and the vent hole 7 for sucking a portion with a small rising is small for one cavity. Further, the number of piston members 10 continuously provided with the frame body 2 according to the present invention is not limited to the above-mentioned embodiment, and may be any number capable of easily operating one frame body 2. For example, only one piston member 10 is required. It may be provided.

Therefore, when the simultaneous molding / painting is performed by using this simultaneous molding / molding die, the following is performed.

First, as shown in FIGS. 2 and 3, a fluid 14 is supplied to each cylinder hole 12 from a suitable supply source through a supply passage 13. The pressure of the supplied fluid 14 pushes the piston member 10 against the coil spring 11, moves the frame body 2 to the fixed mold side, and lifts the painting film 8.

After that, the supply of the fluid 14 is stopped, the movement of the frame 2 is stopped in a state where the picture film 8 is lifted, and the picture film 8 is sandwiched by the clamp 9. Next, a heater is placed between the molds to heat the decorative film 8 and, at the same time, suction is performed from the suction holes 6 through the ventilation holes 7. As a result, as shown in FIGS. Since the air between the inner surface and the inner surface is sucked into the suction hole 6 through the ventilation hole 7, the painting film 8 is deformed along the inner surface of the cavity forming portion 4.

Next, as shown in FIGS. 6 and 7, the fluid 1
By discharging 4 again from the cylinder hole 12, the piston member 10 is pushed by the force of the coil spring 11, and the frame body 2 moves so as to be housed in the storage recess 5.

After that, the heater is moved from between the molds to the outside of the mold, the movable mold 1 is joined to the fixed mold, and the resin is injected into the mold to perform simultaneous molding and painting.

Before the decorative film 8 is pushed up by the frame body 2, the decorative film 8 may be clamped by the clamp 9.

[0022]

The mold for simultaneous molding and painting of the present invention is a movable mold of the mold for simultaneous molding and painting, which is provided with a frame body slidable in the opening and closing direction of the mold and accommodates the frame body. Is provided on the parting surface so as not to contact the cavity forming portion and surrounds the periphery thereof, and a plurality of suction holes are provided in the storage recess, and a ventilation port is provided between the inner side surface of the frame and the storage recess. It is configured to be formed.

Therefore, a plurality of suction holes are provided in the storage recess, and the air is formed in any direction from the ventilation hole formed between the inner surface of the frame and the storage recess regardless of the arrangement of the storage recess. Since it can be sucked, wrinkles do not occur on the film.

Further, since only one frame body slides, the internal mechanism of the mold becomes simple.

Further, since the accommodating recess for accommodating the frame is provided so as to surround the periphery of the cavity forming portion without making contact with the cavity forming portion, the shape of the cavity forming portion is free from affecting the mold design.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a movable die of a molding simultaneous painting die according to the present invention.

FIG. 2 is a cross-sectional view of the movable die of FIG. 1 taken along the line AA showing the state of the die at the time of starting the supply of fluid.

FIG. 3 is a BB cross-sectional view of the movable die in FIG. 1 showing a state of the die at the time of starting the supply of fluid.

FIG. 4 is a cross-sectional view of the movable die of FIG. 1 taken along the line AA showing the state of the die during the molding of the painting film.

5 is a cross-sectional view of the movable die of FIG. 1 taken along the line BB showing the state of the die at the time of forming the decorative film.

6 is a sectional view of the movable die of FIG. 1 taken along the line AA showing the state of the die when the fluid is discharged.

7 is a BB sectional view of the movable die shown in FIG. 1, showing a state of the die when the fluid is discharged.

FIG. 8 is a front view showing an embodiment of a movable vent of the molding simultaneous painting die of the present invention.

FIG. 9 is a front view showing an example of a movable die of a conventional molding simultaneous painting die.

FIG. 10 is a view showing a state of a mold at the time of forming a film with a picture.
FIG. 4 is a cross-sectional view of a movable type CC.

FIG. 11 is a view showing a state of a mold at the time of forming a painted film.
FIG. 6 is a cross-sectional view of the movable type DD.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Movable type 2 Frame body 3 Parting surface 4 Cavity forming part 5 Storage recess 6 Suction hole 7 Vent 8 Film with film 9 Clamp 10 Piston member 11 Coil spring 12 Cylinder hole 13 Supply path 14 Fluid 15 Slide block 16 Groove 17 Cavity Forming recess 18 Movable female mold

Claims (1)

[Claims] 1. A movable mold of a molding simultaneous painting die,
A frame that is slidable in the opening and closing direction of the mold is provided, and a recess for storing the frame is provided on the parting surface so as to surround the cavity without contacting the cavity forming part,
A mold for simultaneous painting, which is characterized in that a plurality of suction holes are provided in the storage recess, and a ventilation port is formed between the inner surface of the frame and the storage recess.