JPH0811146A - Release device of resin mold - Google Patents

Abstract

PURPOSE:To provide the release device capable of preventing such a phenomenon that a molding material penetrates into the release mold to generate operation deficiency in thermal press molding or in-mold coating molding. CONSTITUTION:The release device of a resin mold is adapted to thermal press molding or in-mold coating molding. A freely openable and closable nozzle mechanism 6 constituted of an inclined hole 4 and a valve disc 5 is provided to at least either one of a fixed mold 1 and a movable mold 2. The diameter of the inclined hole 4 for supplying a fluid into a cavity 3 is small on the side of the cavity 3 and large on the other side thereof. The leading end part of the valve disc 5 separating from the inclined hole 4 and coming into contact therewith has the same shape as the inclined hole 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to heat and pressure molding in which a thermosetting resin molding material is heated and pressed using a split mold, or a coating layer is formed on one side of a resin molded product formed into a predetermined shape. The present invention relates to a mold release device for a resin molding die used for in-mold coating molding.

[0002]

2. Description of the Related Art As a conventional example of a mold releasing device for a resin molding die, there is JP-A-6-63978. In this conventional example, as shown in FIG. 25, a resin molding die including a fixed mold 1 and a movable mold 2 is used to heat and press a thermosetting resin molding material to form a resin molded product, The movable mold 2 is moved in a state where the resin molded product is cured or semi-cured, and a gap is provided between one of the fixed mold 1 and the movable mold 2 and the resin molded product, and then the gap is covered. In a mold releasing apparatus for a resin molding die in which a material is injected and heated and pressed again to form a coating layer on the resin molded article, an openable and closable nozzle mechanism is provided on the cavity 3 surface of the fixed mold 1. The nozzle mechanism of this conventional example is composed of a cylinder 12 having a valve seat 30 and capable of advancing and retracting toward the gap, and a valve element 5 capable of independently advancing and retracting in the cylinder 12,
The nozzle mechanism is opened when air is ejected to press the resin molded product against the movable mold 2, and the nozzle mechanism is closed after the pressing is completed.

The valve seat 30 of the cylinder 12 is shaped so that the hole diameter increases toward the cavity 3 surface side, and the valve body 5 that is openably and closably fitted to the valve seat 30 is the valve seat 30. The shape is the same as that of the inverted frusto-conical shape in which the diameter of the cavity 3 side increases. Thus, the valve seat 3
0 and the valve body 5 have a large diameter on the cavity 3 side,
Further, since the cylinder 12 can move back and forth toward the gap, the valve seat 30 and the valve body 5 of the cylinder 12 of the mold release device can be used in the heating / pressurizing molding of the thermosetting resin molding material or the in-mold coating molding. , Or the molding material easily enters between the cylinder 12 and the fixed mold 1, and even if the molding material enters the mold releasing device and hardens, the valve body 5 and the cylinder 12 are separated from each other. The cured resin remains in the mold releasing device or the cavity 3, which causes a foreign matter defect in the molded product, and the valve body 5 and the cylinder 12 have a problem.
The clearance between the valve body 5 and the cylinder 12 is not constant (becomes larger) due to the cured resin remaining between
There is a problem that the penetration of the molding material is promoted.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the problems of the above-mentioned conventional examples, and its object is to form a molding material in the heating and pressurizing molding or the in-mold coating molding. It is an object of the present invention to provide a mold releasing device for a resin molding die that can prevent a malfunction from entering the mold releasing device side.

[0005]

In order to solve the problems of the above-mentioned conventional examples and achieve the object of the present invention, a mold releasing apparatus for a resin molding die of the present invention comprises a fixed mold 1 and a movable mold 2. In a mold releasing apparatus for a resin molding die, which uses a resin molding die to heat and press the thermosetting resin molding material 20 to form a resin molded article, the resin molding die is provided on at least one of the fixed mold 1 and the movable mold 2. An inclined hole 4 for supplying a fluid to the cavity 3 having a small diameter on the surface side of the cavity 3 and a large diameter on the other side,
The nozzle mechanism 6 is characterized in that it is provided with a nozzle mechanism 6 which is separated from and in contact with the inclined hole 4 and has a valve body 5 whose tip has the same shape as the inclined hole 4.

Further, a thermosetting resin molding material 20 is heated and pressed using a resin molding die composed of a fixed mold 1 and a movable mold 2 to form a resin molded product, and the resin molded product is cured or semi-cured. The movable die 2 is moved in the state of
A resin for forming a coating layer on the resin-molded product by providing a gap 7 between one of the movable mold 2 and the resin-molded product and then injecting a coating material into the gap 7 and heating and pressurizing the resin again. Fixed mold 1 to movable mold 2 in a mold release device
The inclined hole 4 for supplying a fluid to the cavity 3 having a small diameter on the surface side of the cavity 3 and a large diameter on the other side provided in at least one of the It is also preferable to have a configuration including a nozzle mechanism 6 having an inclined hole 4 and a valve body 5 having the same shape and capable of opening and closing.

It is also preferable to provide an elastic body 8 on the inner surface of the inclined hole 4. It is also preferable to provide the heating element 9 in the vicinity of the inclined hole 4 or at least one of the valve elements 5. In addition, the valve lid 1 that covers the portion of the inclined hole 4 that faces the cavity 3
It is also preferable to provide 0.

[0008]

According to the present invention having the above structure, the fixed mold 1
Through the inclined hole 4 for supplying the fluid to the cavity 3 provided on at least one of the movable dies 2 and having a small diameter on the surface side of the cavity 3 and a large diameter on the other side, Since the tip end is provided with the nozzle mechanism 6 which has the valve body 5 having the same shape as the inclined hole 4 and which can be freely opened and closed, the diameter of the inclined hole 4 is small on the cavity 3 surface side and the valve body 5 is also provided.
Since the tip has a small diameter, the contact area between the inclined hole 4 serving as a fluid supply port and the molding material can be reduced, and the inclined hole 4 is used in the heating / pressurizing molding of the thermosetting resin molding material 20 or the in-mold coating molding. The molding material is prevented from entering from a fitting portion between the tip of the valve body 4 and the tip of the valve body 5.

By providing the elastic body 8 on the inner surface of the inclined hole 4, the adhesion between the inclined hole 4 and the valve body 5 is improved. Further, by providing the heating element 9 in the vicinity of the inclined hole 4 or in at least one of the valve bodies 5, the clearance due to the thermal expansion of the inclined hole 4 portion can be controlled. Further, by providing the valve lid 10 that covers the portion of the inclined hole 4 facing the cavity 3, it is possible to more reliably prevent the molding material from entering between the inclined hole 4, the cylinder 12 and the fixed mold 1 or the movable mold 2. You can do it.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention is shown in FIGS. In this embodiment, the thermosetting resin molding material 2 is used.
An example of 0 heat and pressure molding is shown. FIG. 1 shows a resin molding die for heat and pressure molding of a curable resin molding material 20. 1 is a fixed type, 2 is a movable type, and a fixed type 1
At least one of the movable dies 2 is provided with a nozzle mechanism 6 which constitutes a releasing device. In the embodiment shown in the accompanying drawings, the fixed die 1 is provided with a nozzle mechanism 6. The nozzle mechanism 6 is provided with an inclined hole 4 serving as a fluid supply port opened on the surface of the cavity 3.
And the valve body 5 that is fitted into and comes into contact with and separates from the inclined hole 4, and the inclined hole 4 has a diameter that gradually decreases toward the surface of the cavity 3 and has a minimum diameter on the surface of the cavity 3. Further, the valve body 5 has the same shape as the inclined hole 4, and the diameter gradually decreases toward the surface of the cavity 3, and the diameter of the surface of the cavity 3 becomes the minimum.

The inclined hole 4 has a cylinder 1 embedded in the fixed mold 1.
It is formed in the upper part of 2, and the valve body 5 is movably installed inside the cylinder 12. The tip portion of the valve body 5 is the inclined portion 13 having a smaller diameter toward the tip as described above, and the outer peripheral portion is a flange portion 14 at the lower portion of the valve body 5 that contacts the inner peripheral portion of the cylinder 12. . Stopper 1 in cylinder 12
5 is provided so that when the valve body 5 descends, the collar portion 14 hits the stopper 15 so that the valve body 5 does not descend further. The stationary mold 1 is provided with a first fluid injection path 16 and a second fluid injection path 17, and a tip end portion of the first fluid injection path 16 becomes a first injection port 18 opened in the upper part of the cylinder 12, The tip of the fluid injection path 17 serves as a second injection port 19 that opens in the lower portion of the cylinder 12. Here, when the valve body 5 moves up and down in the cylinder 12, the first injection port 18 is opened in the cylinder 12 at a position above the maximum raised position of the collar portion 14, and the second injection port 18 is also opened. Reference numeral 19 denotes a collar portion 14 when the valve body 5 moves up and down in the cylinder 12.
Is opened in the cylinder 12 at a position lower than the maximum lowering position.

To heat and press-mold the curable resin molding material 20 using the resin molding die for heat and pressure molding shown in FIG. 1, the steps shown in FIGS. That is, first,
As shown in FIG. 2, the movable mold 2 is raised to move the cavity 3
A thermosetting resin molding material 20 such as BMC or SMC is installed inside. In this case, a fluid such as air is injected from the second injection port 19 to raise the valve body 5, and the valve body 5 causes the inclined hole 4 to move.
Is closed (that is, the nozzle mechanism 6 is closed). Next, the movable mold 2 is lowered as shown by the arrow in FIG. Even at this stage, the inclined hole 4 is closed by the valve body 5. Next, when the thermosetting resin molding material 20 is completely cured to form the resin molded product 21, a fluid such as air is injected from the first injection port 18 (in this case, the second fluid injection path 17). Side is open), the valve body 5 is lowered as shown by the arrow in FIG. 4, and the nozzle mechanism 6 is opened. Next, as shown in FIG.
By raising the movable mold 2 a little, the fluid injected from the first inlet 18 into the upper part of the cylinder 12 flows between the fixed mold 1 and the resin molded product 21, and the resin molded product 21 moves from the fixed mold 1. Release the mold. Next, as shown in FIG.
Fluid is injected from above to raise the valve body 5 (in this case, the first
(The fluid injection path 16 side is open), the valve body 5 allows the inclined hole 4
Close. Next, as shown in FIG. 7, the movable mold 2 is raised to the same state as in FIG. 2 and the resin molded product 21 is taken out.

In the above-mentioned molding, an inclined structure in which the diameter of the inclined hole 4 is small and the diameter of the tip of the valve body 5 is small on the side of the cavity 3 is also formed. Therefore, the contact area with the molding material when the tilted hole 4 is closed by the valve body 5 is small, and as a result, in the heat and pressure molding of the thermosetting resin molding material 20, the tip end of the tilted hole 4 and the valve body are closed. It is possible to prevent the molding material from entering from the fitting portion with the tip of 5.

Next, another embodiment of the present invention will be described with reference to FIGS. In this embodiment, an example of in-mold coating molding called an in-mold coating method is shown. The mold apparatus of this embodiment is different from the mold apparatus of the embodiment of FIG. 1 in that a coating material injection machine 23 is provided, and the other structures are the same. That is, in this embodiment, at least one of the fixed mold 1 and the movable mold 2 has the same nozzle mechanism 6 as the mold releasing device, and therefore, the specific structure is duplicated and the description thereof is omitted.

Therefore, in-mold coating molding is performed as follows using the molding die apparatus shown in FIG.
First, as shown in FIG. 9, the movable mold 2 is raised and the thermosetting resin molding material 2 such as BMC or SMC is placed in the cavity 3.
Set 0. In this case, a fluid such as air is injected from the second injection port 19 to raise the valve body 5, and the valve body 5 closes the inclined hole 4 (that is, the nozzle mechanism 6 is closed). Next, the movable mold 2 is lowered as shown by the arrow in FIG. Even at this stage, the inclined hole 4 is closed by the valve body 5. Next, when the thermosetting resin molding material 20 is in a cured or semi-cured state, a fluid such as air is injected from the first injection port 18 (in this case, the second fluid injection path 17 side is opened), and the valve body 5 is lowered as shown by the arrow in FIG. 11 to open the nozzle mechanism 6. In this case, the pressure of the fluid is much smaller than the injection pressure of the coating material 27, which will be described later, and the thermosetting resin molding material 20 in the cured or semi-cured state is not pierced by the injection of the fluid. Next, as shown in FIG.
The fluid injected into the upper portion of the cylinder 12 from the first inlet 18 flows between the fixed mold 1 and the thermosetting resin molding material 20 in the cured or semi-cured state by slightly raising the temperature. Next, as shown in FIG. 13, a fluid is injected from the second inlet 19 to raise the valve body 5 (in this case, the first fluid injection path 16 side is opened), and the valve body 5 causes the inclined hole 4 to move. Close. Next, as shown in FIG. 14, when a coating material 27 such as a vinyl ester resin material is ejected from the coating material inlet 24 of the coating material injector 23, the coating material 27 is cured or semi-cured as shown in FIG. The thermosetting resin molding material 20 in the state is pierced by the injection pressure, and the coating material 27 such as a vinyl ester resin material is injected between the thermosetting resin molding material 20 in the cured or semi-cured state and the fixed mold 1. To be done. Next, as shown in FIG. 15, the movable mold 2 is lowered as shown by the arrow and the mold is clamped to perform the secondary molding. Next, when the thermosetting resin molding material 20 and the coating material 27 are completely cured to form the resin molded article 21, as shown in FIG. 16, a fluid such as air is injected from the first injection port 18. (In this case, the second fluid injection passage 17 side is opened), the valve body 5 is lowered as shown by the arrow in FIG. 16, and the nozzle mechanism 6 is opened. Next, FIG.
As shown in FIG. 7, the fluid injected into the upper portion of the cylinder 12 from the first injection port 18 by slightly moving up the movable mold 2 flows between the fixed mold 1 and the resin molded product 21, and the resin molded product 21 is released from the fixed mold 1. Next, as shown in FIG. 18, a fluid is injected from the second injection port 19 to raise the valve body 5 (in this case, the first fluid injection path 16 side is opened), and the inclined hole 4 is closed by the valve body 5. . Next, the movable mold 2 is raised to the same state as in FIG. 9, and the resin molded product 21 is taken out.

Although FIGS. 9 to 18 are schematic views of the molding sequence and show the same thickness of the resin molded product 21, in the embodiment, the nozzle mechanism of the resin molded product 21 is shown. In the case where the resin molded product 21 is, for example, a bath, the portion where 6 and the coating material injection port 24 face each other is a portion that is later punched and removed as a drainage hole, and therefore the other portion is actually used. The wall thickness is smaller than that of the above, and when the coating material 27 is jetted from the coating material injection port 24, the coating material 27 can be easily pierced by the injection pressure. Of course, in the case where the resin molding product 2 can be pierced by the injection pressure of the resin of the coating material injection port 24, as shown in the schematic diagrams of FIGS.
The portion where the nozzle mechanism 6 and the coating material injection port 24 face each other may have the same thickness as the other portions.

Also in the above-described in-mold coating molding, the diameter of the inclined hole 4 is small on the side of the cavity 3 and the diameter of the tip of the valve body 5 is also small. Therefore, the inclined hole 4 is formed by the valve body 5. The contact area with the molding material becomes small when closed, and as a result, the thermosetting resin molding material 20 and the coating material 2
In the molding of No. 7, it is possible to prevent the molding material from entering from the fitting portion between the tip of the inclined hole 4 and the tip of the valve body 5.

By the way, the nozzle mechanism 6 constituting the mold releasing device in each of the embodiments shown in FIGS. 1 and 8 has a structure as shown in FIG. 19, but any of the embodiments shown in FIGS. Also in FIG. 20, an elastic body 8 such as silicon or Teflon may be provided on the inner surface of the inclined hole 4 as shown in FIG. When the elastic body 8 is provided on the inner surface of the inclined hole 4 in this manner, the inclined hole 4
The clearance between the valve body 5 and the inclined portion 13 of the valve body 5 can be reduced, and the molding material can be prevented from entering the inner surface of the inclined hole 4.

Further, in any of the embodiments shown in FIGS. 1 and 8, the heating element 9 may be provided near the inclined hole 4 and / or at least one of the valve elements 5 as shown in FIG. In FIG. 21, the heating element 9 is provided both in the vicinity of the inclined hole 4 and in the valve body 5, but it may be provided in only one of them. By providing the heating element 9 in the vicinity of the inclined hole 4 or at least one of the valve bodies 5 as described above, the clearance due to the heat expansion of the inclined hole 4 portion is controlled. That is, it is possible to reduce the clearance between the inclined portion 13 of the valve body 5 and the inclined hole 4 when the temperature rises. In FIG. 21, 28 indicates a power cord.

22 and 23 show still another embodiment of the present invention. That is, in each of the embodiments shown in FIGS. 1 and 8, an embodiment in which the inclined hole 4 is exposed on the surface of the cavity 3 is shown.
Further, as shown in FIGS. 22 and 23, a valve lid 10 may be provided to cover the inclined hole 4 on the surface of the cavity 3 of the mold releasing device for the resin molding die. The valve lid 10 is, for example, a sheet-like material with an adhesive material, and the valve lid 10 is provided on the cavity 3 side of the mold (fixed mold 1 in the embodiment) on the side where the mold release device is provided so as to cover at least the inclined hole 4. Affix to the surface of. Here, as the sheet-shaped material forming the valve lid 10, a glass cloth having a Teflon finish is used. The valve lid 10 attached to the fixed mold 1 is not completely separated from the fixed mold 1 when the inclined hole 4 of the mold release device is opened and the fluid is ejected from the inclined hole 4, and only a part thereof is provided. The fluid can be jetted into the cavity 3 after being separated. Such a valve lid 10
By providing the above, it is possible to more reliably prevent the molding material from entering from the inclined hole 4 portion during the molding shown in FIGS. 2 to 7 or the molding shown in FIGS. 9 to 18.

The valve lid 10 may be as shown in FIG. In FIG. 24, the valve lid 10 is formed of a thin plate such as aluminum, and the valve lid 10 is fixed to the end portion of the valve lid main body portion 30 via a thin hinge portion 31 and a fixing portion 32.
It is configured by continuously discharging. Then, the fixing portion 32 is fixed to the fixed mold 1 by a fixing means such as a screw 33. The valve lid main body 30 is adapted to be pushed up by the fluid pressure and opened when the inclined hole 4 of the release device is opened and the fluid is ejected from the inclined hole 4. Fixed type 1
An air suction port 34 is provided in the air suction port 34, and a vacuum pump or the like is connected to the air suction port 34 so that the valve lid main body portion 30 can be sucked into a closed state. The valve lid 10 may be opened and closed not only by vacuum suction but also by using an electromagnet or the like.

In each of the above embodiments, the mold temperature of both the fixed mold 1 and the movable mold 2 is, for example, about 120.
C to 130C. Further, although the example of air is shown as the fluid to be used, in addition to air, an inert gas, water or various other fluids can be considered. Here, since the fluid injected from the first injection port 18 is ejected into the cavity 4 through the inclined hole 4, air or an inert gas that does not affect the resin molded product in the cavity 4 is desirable. The fluid injected from the inlet 19 is related only to the sliding movement of the valve body 5, and is not particularly limited as long as it is a fluid. The fluid pressure is about 4 to 10 kg / cm ² .

[0023]

According to the first aspect of the present invention, a thermosetting resin molding material is heated and pressed to form a resin molded article by using a resin molding die including a fixed mold and a movable mold. In the mold releasing apparatus for a resin molding die, a tilted hole for supplying a fluid to a cavity having a small diameter on the cavity surface side and a large diameter on the other side is provided on at least one of a fixed die and a movable die. Since the nozzle mechanism is provided which is separated from and in contact with the inclined hole and has a valve body whose tip portion has the same shape as the inclined hole, the contact area between the inclined hole serving as the fluid supply port and the molding material is reduced. Thus, in the heat and pressure molding of the thermosetting resin molding material, the molding material can be prevented from entering from the fitting portion between the tip of the inclined hole and the tip of the valve body.
The nozzle mechanism constituting the mold releasing device does not malfunction, and the mold releasing can be reliably performed. Moreover, since the diameter of the inclined hole is small on the cavity surface side and large on the other side, and the valve element also has the same inclination angle as this inclined hole, the upper end of the valve element is higher than the lower end of the inclined hole. When the valve body is raised to close it from the open state located below, the inclined hole plays a role of guiding the valve body, and the valve body smoothly moves to the fixed position without biting with the inclined hole ( It can be stored in a closed state (without misalignment).

According to the second aspect of the invention, a thermosetting resin molding material is heated and pressed to form a resin molded article by using a resin molding die including a fixed mold and a movable mold. The movable mold is moved in a state where the resin molded product is cured or semi-cured, a gap is provided between one of the fixed mold and the movable mold and the resin molded product, and then the coating material is injected into this gap. In a mold releasing apparatus for a resin molding die that heats and presses again to form a coating layer on the resin molded product, the cavity surface side of at least one of the fixed mold and the movable mold has a small diameter Since the nozzle mechanism is provided with an inclined hole for supplying fluid to the cavity whose side is large, and a valve body that is separated from and in contact with the inclined hole and has a tip end having the same shape as the inclined hole, Area of contact between the inclined hole that serves as the supply port and the molding material The size of the nozzle can be reduced to prevent the molding material from entering from the fitting portion between the tip of the inclined hole and the tip of the valve body in the molding in the mold, and as a result, the nozzle mechanism that constitutes the mold release device malfunctions. It does not odor and can be reliably released. Moreover, since the diameter of the inclined hole is small on the cavity surface side and large on the other side, and the valve element also has the same inclination angle as this inclined hole, the upper end of the valve element is higher than the lower end of the inclined hole. When the valve body is raised to close it from the open state located below, the inclined hole plays a role of guiding the valve body, and the valve body smoothly moves to the fixed position without biting with the inclined hole ( It can be stored in a closed state (without misalignment).

Further, in the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2,
Since the elastic body is provided on the inner surface of the inclined hole, the adhesive force between the inclined hole and the valve body is improved, and it is possible to more reliably prevent the molding material from entering the nozzle mechanism and prevent malfunction of the nozzle mechanism. The mold release can be surely performed. Further, in the invention of claim 4, in addition to the effect of the invention of claim 1 or claim 2, since the heating element is provided in the vicinity of the inclined hole or in at least one of the valve body, It is possible to control the clearance due to thermal expansion of the hole portion, and also in this respect it is possible to more reliably prevent the molding material from entering the nozzle mechanism, prevent malfunction of the nozzle mechanism, and perform mold release reliably. It is a thing.

According to the invention of claim 5, in addition to the effects of the invention of claim 1 or claim 2,
Since the valve lid that covers the portion of the inclined hole facing the cavity is provided, the valve lid can prevent the molding material from entering the inclined hole side, and the molding material can be prevented more reliably from entering the nozzle mechanism. Therefore, the malfunction of the nozzle mechanism can be prevented and the mold release can be reliably performed.

[Brief description of drawings]

FIG. 1 is an overall sectional view of an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a molding sequence of the above.

FIG. 3 is an explanatory view showing a molding sequence of the above.

FIG. 4 is an explanatory view showing a forming sequence of the above.

FIG. 5 is an explanatory view showing a forming sequence of the above.

FIG. 6 is an explanatory view showing a molding sequence of the above.

FIG. 7 is an explanatory diagram showing a molding sequence of the above.

FIG. 8 is an overall sectional view of another embodiment of the present invention.

FIG. 9 is an explanatory diagram showing a molding sequence of the above.

FIG. 10 is an explanatory diagram showing a molding sequence of the above.

FIG. 11 is an explanatory diagram showing a molding sequence of the same.

FIG. 12 is an explanatory diagram showing a molding sequence of the above.

FIG. 13 is an explanatory diagram showing a molding sequence of the same.

FIG. 14 is an explanatory view showing a molding sequence of the above.

FIG. 15 is an explanatory diagram showing a molding sequence of the above.

FIG. 16 is an explanatory diagram showing a molding sequence of the above.

FIG. 17 is an explanatory diagram showing a molding sequence of the above.

FIG. 18 is an explanatory diagram showing a molding order of the same.

FIG. 19 is a sectional view of an embodiment of the nozzle mechanism used in the present invention.

FIG. 20 is a cross-sectional view of another embodiment of the nozzle mechanism used in the present invention.

FIG. 21 is a sectional view of another embodiment of the nozzle mechanism used in the present invention.

FIG. 22 is an overall sectional view of another embodiment of the present invention.

FIG. 23 is a cross-sectional view of the nozzle mechanism portion of the above.

FIG. 24 is a cross-sectional view of another embodiment of the nozzle mechanism portion of the above.

FIG. 25 is a cross-sectional view showing a conventional example.

[Explanation of symbols]

 1 Fixed type 2 Movable type 3 Cavity 4 Sloping hole 5 Valve body 6 Nozzle mechanism 7 Gap 8 Elastic body 9 Heating element 10 Valve lid 20 Thermosetting resin molding material

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[Procedure amendment]

[Submission date] May 1, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

[0008]

According to the present invention having the above structure, the fixed mold 1
Through the inclined hole 4 for supplying the fluid to the cavity 3 provided on at least one of the movable dies 2 and having a small diameter on the surface side of the cavity 3 and a large diameter on the other side, Since the tip end is provided with the nozzle mechanism 6 which has the valve body 5 having the same shape as the inclined hole 4 and which can be freely opened and closed, the diameter of the inclined hole 4 is small on the cavity 3 surface side and the valve body 5 is also provided.
The diameter of the tip of the nozzle also becomes smaller , and the inclined hole 4 becomes the fluid supply port.
It is possible to reduce the contact area between the molding material and the molding material, and in the heating / pressurizing molding of the thermosetting resin molding material 20 or the in-mold coating molding, from the fitting portion of the tip of the inclined hole 4 and the tip of the valve body 5, the molding material is formed. Is to prevent the entry.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction content]

Also in the above-described in-mold coating molding, the diameter of the inclined hole 4 is small on the side of the cavity 3 and the diameter of the tip of the valve body 5 is also small . Therefore, the inclined hole 4 is formed by the valve body 5. The contact area with the molding material when closed is small, and as a result, when molding the thermosetting resin molding material 20 and the coating material 27, molding is performed from the fitting portion between the tip of the inclined hole 4 and the tip of the valve body 5. The material can be prevented from entering.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication location B29L 9:00 (72) Inventor Naoto Ikegawa 1048 Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Works Co., Ltd. (72) Inventor Mitsunori Kobayakawa, 1048, Kadoma, Kadoma, Osaka Prefecture, Matsushita Electric Works Co., Ltd. Koichi Osaka Prefecture Kadoma City 1048 Kadoma, Matsushita Electric Works Co., Ltd. (72) Inventor Shozo Tanaka 5-8 Nishimitabicho, Suita City, Osaka Pref.

Claims (5)

[Claims] 1. A mold releasing apparatus for a resin molding die, which uses a resin molding die composed of a fixed die and a movable die to heat and press a thermosetting resin molding material to form a resin molded article. An inclined hole for supplying a fluid to a cavity provided on at least one of the movable molds and having a small diameter on the cavity surface side and a large diameter on the other side; And a valve mechanism having the same shape as that of FIG. 2. A resin molding die comprising a fixed mold and a movable mold is used to heat and press a thermosetting resin molding material to form a resin molded product, and the resin molded product is in a cured or semi-cured state. By moving the movable mold, a gap is provided between one of the fixed mold and the movable mold and the resin molded product, and then a coating material is injected into this gap and heated and pressed again to heat the resin molded product. In a mold releasing apparatus for a resin molding die that forms a coating layer on a substrate, a fluid is supplied to a cavity having a small diameter on the cavity surface side and a large diameter on the other side provided on at least one of a fixed die and a movable die. A mold releasing apparatus for a resin molding die, comprising: a tilting hole for the opening and a nozzle mechanism, which has a valve body that is separated from and in contact with the tilting hole and has a tip end having the same shape as the tilting hole. 3. The mold releasing device for a resin molding die according to claim 1, wherein an elastic body is provided on the inner surface of the inclined hole. 4. A mold releasing apparatus for a resin molding die according to claim 1, wherein a heating element is provided near at least one of the inclined hole and the valve body. 5. The mold releasing apparatus for a resin molding die according to claim 1, further comprising a valve lid that covers a portion of the inclined hole facing the cavity.