JPH08281671A - Mold of resin molding and mold release/assembling truck thereof - Google Patents

Abstract

PURPOSE: To obtain a mold capable of being held vertically or obliquely and simply susceptible or obliquely and simply susceptible to mold release, mold assembling and cleaning and a mold release/assembling truck thereof. CONSTITUTION: A mold release/assembling truck 16 is constituted so that upper and lower molds 1a, 1b are provided on a base 40 in mutually opposed relationship and held by the pins of the drive side upper support stand and follower side upper support stand respectively provided on a fixed lower support stand 43 and a movable lower support stand 45 and made rotatable and tiltable by a mold rotating drive motor 53. The upper mold 1a can be movable in the contact direction with the lower mold 1b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding die for a resin molding for high voltage using a thermosetting resin, for example, an epoxy resin, and a mold release / mold assembly carriage.

[0002]

2. Description of the Related Art FIGS. 1 and 2 show, for example, JP-A-5-3256.
FIG. 2 is a sectional view of the mold shown in Japanese Patent Publication No. 95 and a perspective view of the apparatus, in which 1 is a mold, 1a is an upper mold,
1b is a lower mold, and the upper and lower molds are clamped with bolts (not shown) provided on the outer periphery of the mold 1 at a predetermined interval. Reference numeral 2 is a resin injection port provided in the upper part of the mold, 3 is a conductor connecting fitting embedded in the center of the product, and 4 is a bolt insertion hole fitting embedded in the outer periphery of the product at a predetermined interval. 5
Is a mold release bolt which is provided on the outer periphery of the upper mold 1a at a predetermined interval, and 6 is a mold release bolt which is provided on the outer periphery of the lower mold 1b at a predetermined interval. . In FIG. 2, 7 is a tray that holds the mold 1 vertically and is movable, and 8 is a sandwiching / heating device for sandwiching / heating the mold 1, and preheating the mold 1 with a hot plate 9 Heat to perform primary curing (harden to a mechanical strength capable of releasing). Reference numeral 10 is a piston for holding the hot plate 9 in the mold 1.

Next, the casting method will be described. Set the conductor connection fitting 3 and the bolt insertion hole fitting 4 in the mold 1,
The lower die 1b and the upper die 1a are clamped by the bolts provided on the outer periphery of the die 1 to complete the die assembly. The assembled mold 1 is held vertically on the tray 7, and the mold 1 and the heating plate 9 are clamped by the piston 10 of the clamping / heating device 8 to preheat the mold 1. The mold 1 is removed from the sandwiching / heating device 8, the preheated mold 1 is housed in a vacuum chamber (not shown), the interior of the vacuum chamber is decompressed, and a thermosetting resin is provided on the upper part of the mold 1. A thermosetting resin is injected into the mold 1 through the resin injection port 2 thus obtained. When the resin injection into the mold 1 is completed, the mold 1 is taken out of the vacuum chamber, the mold 1 and the heating plate 9 are clamped again by the piston 10 of the clamping / heating device 8, and the mold is heated by the heating plate 9. Then, primary curing (hardening to a mechanical strength capable of releasing) is performed.
The mold 1 that has been cured is removed from the sandwiching / heating device 8, and at a mold release / mold assembly station (not shown), the bolts that are clamped with the mold 1 held vertically are removed. The mold release bolt 5 of the upper mold 1a is rotated in the pressing direction of the lower mold 1b to separate the lower mold 1b and the upper mold 1a. next,
The product release bolt 6 of the lower die 1b is rotated in the pressing direction of the product to release the product from the lower die 1b. The released product is
A secondary curing furnace (not shown) is carried in to perform secondary curing. After the mold is released, the mold 1 is reassembled with the mold 1 in the vertical state. Subsequent steps are repetitions of the above.

[0004]

According to the conventional injection method as described above, for a product in which the conical portion of the conical spacer has a tight taper, the mold is tilted and held at a certain angle, and Although it has to be hardened, the conventional casting method could not completely remove the air bubbles generated inside the mold during resin injection, and remained as it was, which adversely affected the product quality. Further, in the conventional mold releasing method, since the bolts on the outer periphery of the mold are rotated while facing each other, there is a problem that the mold and the product are twisted, which makes it difficult to separate the mold. Further, since it is oriented vertically, a holding device for preventing the product from falling is required. When cleaning the mold, it was difficult to clean and it was a very dangerous work because it had to be put into the limited space of the upper and lower molds in the vertical orientation.

The present invention has been made in order to solve the above problems. When the material of the mold is injected and the primary curing is performed, it is held vertically or inclined, and when the mold is released and assembled. For vertical holding, when holding the product from the mold, hold it horizontally so that the mold can be released easily. Further, by making the mold release / mold assembly carriage easily movable, it becomes possible to perform mold release / mold assembly at any place.

[0006]

In the molding die according to the present invention, a holding metal fitting is attached to a two-divided or three-divided die having various shapes so that the die can be held by a common tray. .

In the molding die according to the present invention, the tray and the holding fitting are common for both tilt holding and vertical holding, but tilt holding or vertical holding can be performed depending on the mounting position. .

The molding die according to the present invention is such that pressurized air can be supplied to the cavity of the lower die.

The mold according to the present invention is such that pressurized air can be supplied to the cavity of the upper mold.

[0010]

In the releasing carriage according to the present invention, when the product is released from the mold, the mold can be rotated and tilted horizontally (the direction in which the product falls).

The release truck according to the present invention is designed such that, when the mold is cleaned after the product is taken out from the mold, the mold can be rotated and tilted to a position where the cavity of the mold is on the outside. .

[0012]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing a state in which a mold according to an embodiment of the present invention is assembled, wherein 1 to 4 are the same as the conventional example, and 11 is a space between the lower mold 1b provided on the lower mold 1b and the product. Is a valve for supplying / stopping the pressurized air, and 12 is a valve for supplying / stopping the pressurized air between the upper mold 1a provided on the upper mold 1a and the product. Pressurized air is supplied from multiple locations on the mold. (For example, a plurality of places such as a central portion and a cavity portion) FIG. 2 is a view showing a state where the inclined holding mold 1 is held on the tray, and FIG. 3 shows a state where the vertical holding mold 1 is held on the tray. FIG. Reference numerals 14a and 14b are grooves for engaging and holding the holding metal fitting 15 attached to the mold 1. FIG. 4 is a side view of FIG. FIG. 5 is a plan view showing an example of a manufacturing line used in the present invention. FIG. 6 is a side view of FIG. In FIG. 5 and FIG. 6, 16 is a mold release / mold assembly carriage, and 18 is movable up and down for attaching / detaching the mold 1 to / from the tray 7 and for transferring the tray 7 to / from the traverse carriage 19 provided with the conveyor 20. A table lifter,
A conveyor 18a is provided. 21 is a preheating furnace for preheating the mold 1 provided with the conveyor 22. 23 is the conveyor 2
A curing furnace for curing the thermosetting resin injected into the mold 1 provided with 4, and a resin injection tank 25 provided with a conveyor 26, which can make a vacuum inside when the mold 1 is housed. Reference numeral 27 is a traverse carriage for transferring the mold 1 between the preheating furnace 21 and the resin injection tank 25 or between the resin injection tank 25 and the curing furnace 23, and a conveyor 28 is provided.

FIG. 7 shows a state in which the mold 1 immediately before the mold assembly is held on the release / mold assembly carriage 16. FIG. 7 (A) shows the vertical holding mold 1 held, and FIG. 7 (B) shows the inclined holding mold 1 held. FIG. 8 is a right side view of FIG. 7, and in FIGS. 7 and 8, 40 is a base, 41 is a guide rail provided on the upper surface of the base 40, and 42 is a rolling bearing attached to the lower part of the base 40. The mold release / mold assembly truck can be easily moved in all directions. 43 is the base 40
A fixed lower support table fixed to the upper surface at one end, 44a is a guide rail provided on the upper surface of the fixed lower support table 43 at a predetermined interval, and 45 is a movable lower support table and a guide rail 41 on the bottom surface. It has a guide portion 46 which is fitted and supported, and a guide rail 44b which is provided on the upper surface at a predetermined interval. Reference numeral 48 denotes a drive-side upper support base, a guide portion 49 on which a guide rail 44b (or a guide rail 44a in the case of the fixed-side lower support base 43) is fitted and supported on the bottom surface thereof, and a screw provided on a protruding portion at the center of the bottom surface. A shaft 52 having a hole 50 and provided with pins 51 to be fitted into the holes of the holding fitting 15 of the mold 1 at two positions in the circumferential direction is supported. Reference numeral 53 is a mold rotation drive motor that is fixed to the upper surface of the drive-side upper support base 48 and that is connected to the shaft 52 by a belt 54 and rotates. Reference numeral 55 denotes a driven-side upper support, a guide portion 56 fitted and supported by a guide rail 44b (in the case of the fixed-side lower support 43, a guide rail 44a in the case of the fixed-side lower support 43) on its bottom surface, and a screw hole provided in a protruding portion at the center of the bottom surface. A shaft 59 having a pin 57 that holds 57 and fits into a hole of the holding metal fitting 15 of the mold 1 is supported. A driving screw 60 is screwed into a screw hole 47 provided in the moving-side lower support base 45, one end of which is connected to a shaft 62 via a bevel gear 61, and is further moved via a pulley 63 and a belt 64. Connected to the drive motor 65, the moving-side lower support base 45
Is moved in the left-right direction in FIG. Reference numeral 66 denotes a drive screw, which is screwed into a screw hole 50 and a screw hole 57 provided in the drive-side upper support base 48 and the driven-side upper support base 55, and one end of which is connected to the movement drive motor 69 via a belt 68. ,
The drive side upper support base 48 and the driven side upper support base 55 are shown in FIG.
Move to the left or right. FIG. 9 shows a state in which the mold 1 is assembled by a mold release / mold assembly carriage and a state immediately before the mold release. Figure 9
9A is a vertical holding mold 1, and FIG. 9B is a tilt holding mold 1. FIG. 10 shows a state in which the mold 1 is held on the tray 7 by the mold release / die assembly carriage 16 and a state immediately before the mold 1 held on the tray 7 is held by the mold release / die assembly carriage 16.
FIG. 10A shows a vertical holding mold 1, and FIG. 10B shows a tilt holding mold 1. 11A and 11B are views showing a state where the mold is released from the mold release / mold assembly carriage 16; FIG. 11A is a vertical holding mold, and FIG. 11B is a tilted mold. FIG. 12 is a diagram showing a state immediately before releasing the primary cured product.
FIG. 12A shows a vertical holding mold, and FIG. 12B shows an inclined holding mold. 13A and 13B are views showing a state of the mold 1 during cleaning, in which the mold is held vertically in FIG. 13A and the mold is held obliquely in FIG. 13B.

Next, the operation and operation will be described. Figure 5,
FIG. 6 is a plan view and a side view showing an example of a manufacturing line used in the present invention. In the method for casting thermosetting resin of the present invention, the mold 1 held on the tray 7 preheated in the preheating furnace 21 is transferred to the conveyor 22 of the preheating furnace 21 and the traverse carriage 2
The conveyor 28 of 7 moves the traverse carriage 27 to the traverse carriage 27 by the conveyor 26, and moves the traverse carriage 27 to the position of the resin injection tank 25 → the conveyor 28 of the traverse carriage 27 and the resin injection tank 2
5 by the conveyor 26 of the mold 1 resin injection tank 25
Then, the mold 1 is moved to the traverse carriage 27 from the injection tank 25 by the conveyor 26 of the resin injection tank 25 and the conveyor 28 of the traverse carriage 27, and the thermosetting resin is injected into the curing furnace 23. → The mold 1 is housed in the curing furnace 23 by the conveyor 28 of the traverse carriage 27 and the conveyor 24 of the curing furnace 23, and is heated to perform primary curing of the thermosetting resin (removable mechanical strength). The mold 1 is moved from the curing furnace 23 to the traverse carriage 19 by the conveyor 24 of the curing furnace 23 and the conveyor 20 of the traverse carriage 19 and moved to the position of the table lifter 18 → The table lifter 18 is moved to the traverse carriage 19 The mold 1 by the conveyor 20 of the traverse carriage 19 and the conveyor 18a of the table lifter 18 according to the height of the mold. Move from the berth carriage 19 to the table lifter 18 → align the table lifter 18 to a height where the mold release / mold assembly carriage 16 can hold the mold 1, and hold the mold 1 with the mold release / mold assembly carriage 16 Lower the lifter 18 to separate the tray 7 from the die 1 → Release the die 1 ・ Move the die to the die assembly site while holding it on the die assembly carriage 16 and release the primary cured product ・ Die A recirculating flow including a step of reassembling 1 and the like, and a secondary curing of the released primary cured product, and a flow of cooling to form a product.

FIG. 7 shows a state in which the die 1 immediately before the die assembly is held by a mold release / die assembly carriage, and FIG. 7A shows a state in which the die 1 held vertically is held. 7 (B) holds the tilt-holding mold 1, and the holding metal fitting 15 of the lower mold 1b is attached at the same angle as the tilt-holding angle in a state where the mold 1 is vertical. In this state, the conductor connection fitting 3 and the bolt insertion hole fitting 4 are set in the lower mold 1b, the movement drive motor 65 is driven, and the shaft 62 connected via the belt 64 and the pulley 63 is rotated. 61
When the drive screw 60 is rotated through the moving side lower support base 45 in the axial direction of the drive screw 60 and the upper die 1a is brought into contact with the lower die 1b, the state shown in FIG. 9 is obtained. In this state, the upper and lower molds are clamped with bolts (not shown) provided on the outer periphery of the mold 1 at predetermined intervals.

FIG. 10 is a view showing a supporting posture when the mold is held on the tray by the mold release / mold assembly cart. FIG. 10 (A) is a vertical holding mold 1 and FIG. 10 (B) is an inclined holding. Mold 1 and mold release / mold assembly trolley 1 that holds the mold 1 that has been assembled.
6 is moved to the position of the table lifter 18 on which the tray 7 is placed. In the case of the mold release / mold assembly vehicle 16 in which the mold 1 in FIG. 10A is held vertically, the table lifter 18 is raised and the groove 14a of the tray 7 is engaged with the holding metal fitting 15 of the lower mold 1b. The groove 14b engages with the holding metal fitting 15 of the upper die 1a to hold the die 1 on the tray 7. Next, the lower mold 1b
In order to release the fitting between the pin 51 of the drive-side upper support base 48 on the moving-side lower support base 45 and the pin 58 of the driven-side upper support base 55 fitted in the hole of the holding metal fitting 15 of the upper mold 1a,
The moving drive motor 69 attached to the fixed lower support base 43 and the movable lower support base 45 is driven to rotate the drive screw 66 connected via the belt 68. Figure 10
Mold release / mold assembly cart 1 in which the mold 1 of (B) is held at an inclination
In the case of 6, the pin 5 of the drive-side upper support base 48 on the moving-side lower support base 45 fitted in the hole of the holding metal fitting 15 of the upper mold 1a.
1 and the pin 58 of the driven-side upper support base 55 are released from each other, the moving drive motor 69 attached to the moving-side lower support base 45 is driven to drive the drive screw 66 connected via the belt 68. Rotate. Next, in order to make the holding metal fitting 15 of the lower die 1b inclined by the inclination holding angle of the die 1 vertical, the die rotation drive motor 53 attached to the drive side upper support base 48 is driven to drive the belt 54. The shaft 52 connected through is rotated. Table lifter 1 in this state
8 is raised and the groove 14b of the tray 7 is engaged with the holding metal fitting 15 of the lower die 1b, so that the die 1 is held on the tray 7 with an inclination. Next, to disengage the pin 51 of the drive-side upper support base 48 and the pin 58 of the driven-side upper support base 55 on the fixed-side lower support base 43 fitted in the holes of the holding metal fitting 15 of the lower mold 1b. ,
The moving drive motor 69 attached to the fixed-side lower support 43 is driven to rotate the drive screw 66 connected via the belt 68.

Table lifter 18 → traverse truck 19
→ Preheating furnace 21 → Traverse truck 27 → Resin injection tank 2
The flow of the mold 1 of 5 → traverse carriage 27 → curing furnace 23 → traverse carriage 19 → table lifter 18 is omitted because it has already been described above. On the table lifter 18,
The mold 1 injected with resin and held on the tray 7 is released.
As for the operation for holding the mold assembly cart 16, FIG.
Since it is the reverse operation described in (A) and (B), description thereof will be omitted.
FIG. 9 shows the state of the mold 1 held by the mold release / mold assembly truck immediately before the mold release. FIG. 9A is a vertical holding mold, and FIG.
(B) is a tilt-holding mold, and at the time of mold release, bolts (not shown) provided at predetermined intervals on the outer periphery of the mold 1 in which the upper and lower molds are clamped are removed. . Next, the pressure hose is connected to the valve 12 provided on the upper mold 1a, and the valve 1
2 is opened and pressurized air is supplied between the primary hardened body and the upper die 1a, whereby the upper die 1a and the primary hardened body, and the lower die 1b and the upper die 1a.
Release from. Next, the movement drive motor 65 is driven, and the shaft 62 connected through the belt 64 and the pulley 63.
Drive the drive screw 6 via the bevel gear 61.
When 0 is rotated, the moving side lower support base 45 is moved in the axial direction of the drive screw 60, and the lower mold 1b and the upper mold 1a are completely released. This state is shown in FIG. Figure 11
FIG. 11A shows the mold held vertically, and FIG. 11B shows the mold held tilted.

FIG. 12 is a view showing a state immediately before releasing the primary cured product. FIG. 12 (A) is a vertical holding die, FIG. 12 (B)
Is a mold that holds the slope. Regarding the operation from the state of FIG. 11 to the state of FIG. 12, the mold rotation drive motor 53 mounted on the drive side upper support base 48 is driven to rotate the shaft 52 connected via the belt 54, and the lower mold is driven. The lower mold 1b is made horizontal so that the cavity of 1b faces downward. Next, regarding the release of the primary cured product from the lower mold 1b, a pressure hose is connected to the valve 12 provided in the lower mold 1b, and the valve 12 is opened to apply pressurized air to the primary cured product and the lower mold 1b. The lower mold 1b and the primary cured product are released by supplying in between. The primary cured product that is released from the mold is held by a pedestal (not shown).

FIG. 13 is a view showing a state during cleaning of the mold 1.
FIG. 13 (A) is a vertical holding mold, and FIG. 13 (B) is a tilt holding mold. Regarding the operation from the state of FIG. 12 to the state of FIG. 13, the die rotation drive motor 53 attached to the drive side upper support base 48 is driven to rotate the shaft 52 connected via the belt 54, and the upper die is rotated. The cavities of the lower mold 1a and the lower mold 1b are directed outward.

In the above embodiment, the upper mold 1a and the lower mold 1b.
Although the description has been given of the case of the two-part molding die composed of and, for example, as shown in FIG. 14, it may be a three-part irregular-shape molding die. That is, FIGS. 14 (A) and 14 (B) are a front view and a side view showing a three-dimensionally shaped irregularly shaped molding die and a product formed by the molding die, where 100 is a product, 101a is a mold 1, 101b is a mold. The dies 2 and 101c are dies 3 and 7, and the tray is a tray, and 14a is a groove for engaging the holding metal fitting 15 attached to the side surface of the dies 2 and 101b, and has the same effect as the above embodiment.

[0021]

Since the present invention is constructed as described above, it has the following effects. The mold that can be applied to the mold release / mold assembly trolley can be applied even if the mold has a different shape simply by attaching the holding metal fittings that hold the mold to both ends.
Further, even a simple two-divided mold can be applied. Furthermore, the trays can be shared.

The inclination angle of the mold can be easily changed by changing the mounting angle of the mold holding metal fitting to the mold.

Since the pressurized air is supplied to the lower mold cavity and the upper mold cavity, the mold can be easily released.

When the primary cured product is released from the lower mold, the lower mold can be made horizontal (the direction in which the primary cured product falls), so that the mold can be released by utilizing gravity.

Since the cavity of the mold can be placed outside when cleaning the mold, cleaning can be performed easily.

[Brief description of drawings]

FIG. 1 is a sectional view of a mold according to an embodiment of the present invention.

FIG. 2 is a diagram showing a state in which the inclined holding mold according to the embodiment of the present invention is held on a tray.

FIG. 3 is a diagram showing a state in which a vertical holding die according to an embodiment of the present invention is held on a tray.

FIG. 4 is a side view of FIG.

FIG. 5 is a plan view showing an example of a manufacturing line used in the present invention.

FIG. 6 is a side view of FIG.

FIG. 7 is a diagram showing a state in which a mold according to an embodiment of the present invention is held on a mold release / mold assembly carriage.

FIG. 8 is a right side view of FIG.

FIG. 9 is a diagram showing a state in which a mold according to an embodiment of the present invention is assembled by a mold release / mold assembly vehicle and a state immediately before mold release.

FIG. 10 shows a state in which a mold is held on a tray by a mold release / mold assembly carriage according to an embodiment of the present invention, and immediately before a mold 1 held on a tray 7 is held by a mold release / mold assembly carriage 16. It is a figure which shows the state of.

FIG. 11 is a view showing a state where a mold is released from a mold release / mold assembly vehicle according to an embodiment of the present invention.

FIG. 12 is a diagram showing a state immediately before releasing the primary cured product according to the embodiment of the present invention.

FIG. 13 is a diagram showing a state during cleaning of the mold 1 according to the embodiment of the present invention.

FIG. 14 is a view showing a profile forming die according to an embodiment of the present invention.

FIG. 15 is a cross-sectional view of a conventional mold.

FIG. 16 is a perspective view of a conventional device.

[Explanation of symbols]

1 Mold 1a Upper mold 1b Lower mold 7 Tray 15 Holding fitting 16 Releasing / molding dolly 40 Base 42 Rolling bearing 43 Fixed side lower support 45 Moving side lower support 48 Drive side upper support 51 Pin 53 Mold rotation Drive motor 55 Driven side upper support base 58 pins 100 Product 101a Mold 1 101b Mold 2 101c Mold 3

Claims (9)

[Claims] 1. A resin molding comprising: a molding die having an upper die and a lower die for injecting a thermosetting resin; and a tray holding the molding die by a holding metal fitting. Molding die. 2. The molding die for a resin molded article according to claim 1, wherein even the irregularly shaped molding die can be supported on the tray by providing a support fitting on the side portion. 3. The molding die for resin molding according to claim 1, wherein the tilting angle of the molding die can be easily changed by setting the angle at which the holding metal fitting is attached to the molding die. 4. The molding die for a resin molding according to claim 1, wherein various molding dies are positioned by a groove provided in the tray. 5. When releasing the lower mold and the upper mold, the mold can be easily released by supplying air to a cavity portion in contact with a product of the upper mold.
Mold for molding the resin molding described. 6. The resin molding according to claim 1, wherein when the lower mold and the product are separated from each other, air can be supplied to a cavity portion that contacts the product of the lower mold so that the mold can be easily separated. Mold for body molding. 7. A mold release tool, characterized in that, when the product is taken out from the mold, the mold can be rotated and tilted so that the cavity of the mold faces downward in order to facilitate the removal of the product. -Model assembly cart. 8. The mold according to claim 7, wherein when cleaning the mold after taking out the product from the mold, the mold can be rotationally tilted so that the inner surface of the mold is on the outside. Detachable / molded trolley. 9. The mold release according to claim 7, wherein the mold is supported by a mold release / mold assembly trolley so that a series of operations of the mold release and the mold assembly can be performed by one trolley. -Model assembly cart.