JPS595545Y2 - mold for molding - Google Patents

Description

[Detailed description of the invention] This invention relates to an injection mold consisting of a movable mold that can be opened and closed, a fixed mold, and a sliding piece, and more specifically,
The present invention relates to a molding die configured to attach a molded product to a desired side of the mold using a slide piece.

(Background Art) Conventionally, various molding molds have been used which are composed of a movable mold that can be opened and closed, a fixed mold, and a sliding piece.

However, the molded product is simply allowed to adhere to the mold on the side where the molded product has a stronger adhesion force, for example, the mold on the side where ribs and the like have been molded.

However, if there is a desire to have the molded product adhere to the mold on the side of the mold with smaller adhesion force in consideration of ejection and automatic ejection of the molded product, for example, an ejector pin that moves back and forth using pneumatics, a so-called air bin, is installed and A common practice was to use an air bottle to push the molded product into a desired mold until the stroke mold was opened.

However, when using air bottles, there is not enough space in the mold to install the required number of air bottles, which makes the mold design difficult, and also requires a large number of processing steps to install a large number of air bottles.

Moreover, the excessive force exerted by the air bottle tends to cause deformation, whitening, and other damage to the molded product.

On the other hand, if the mold on the non-adhesive side is not cooled rapidly and strongly as a countermeasure, the mold temperature increases, the cooling time increases, the molding cycle becomes longer, and productivity decreases. .

Conventionally, as an alternative to the above-mentioned air bottle, an undercut for the molded product is provided in the mold on the side to which the molded product is to be attached.
A technique was implemented that utilized the effect of the undercut being caught in the mold.

However, unless the amount of undercut is sufficiently large, the molded product cannot be reliably attached to the desired mold.

However, the larger the amount of undercut, the more the design of the molded product is impaired, and the undercut portion has the disadvantage of causing scratches and bulges after being removed from the molded product.

By the way, the molding die described in Japanese Utility Model Publication No. 54-1495 has a hanging plate attached to the split mold that can be hung on the molded product,
The molded product is released by moving the retaining plate along guide pins as the split mold moves.

For this reason, when the molded product is released from the undercut molding portion, either the fixed mold or the movable mold simply adheres to the mold with the stronger adhesion force.

Next, in the case of the molding die described in Japanese Utility Model Application Publication No. 48-49266, the effect of attaching the molded product to the desired mold by means of the slide piece is recognized.

However, this was originally intended for good undercut formation.

Therefore, the slide piece is built into the side core, and when the mold is opened, the side core is elastically separated from the moving mold molded product in the mold opening direction, but in reality it is loosely arranged to some extent toward the fixed mold. Therefore, depending on the relationship between the elasticity of the spring, the clamping force and clamping force of the side core and slide piece, and the adhesion force of the molded product,
The disadvantage is that it is difficult to ensure that the molded product will adhere to the desired mold, and that the molded product may be damaged.

(Purpose of the invention) Therefore, the purpose of this invention is to be able to forcibly and reliably attach the molded product to the desired mold, and for this purpose there is no need to provide unnecessary undercuts etc. on the molded product. The object of the present invention is to provide a molding die with an improved configuration.

(Structure and effect of the invention) In order to achieve the above purpose, the molding die of this invention has the following features:
The slide piece is provided with a latching part that also serves as a mold surface on the outer surface of the molded product that forms an appropriate angle with respect to the mold opening direction of the mold, and the slide piece is attached to the mold to which the molded product is to be attached.
A guide that is installed so that the latching part can slide in a direction in which it is removed from the molded product, and that slides into sliding contact with the slide piece as a sliding surface parallel to the mold opening direction until the movable mold is opened from the fixed mold by a predetermined stroke. A guide piece having a section is installed in the mold on the non-adhesive side of the molded product, and a slope part is provided on either the slide piece or the guide piece, or both, to allow the slide piece to retreat when the mold is opened by the predetermined stroke. The sliding piece is shaped as an extension of the sliding surface and is provided with a driving means for sliding the sliding piece at the stage of opening the mold with the predetermined stroke, and the sliding piece is provided with an inclined surface for mold clamping, and the sliding piece is provided with a sloped surface for mold clamping, and The mold is provided with an inclined surface support that presses against the inclined surface of the slide piece when the mold is clamped.

In other words, until the mold opens a predetermined stroke, the latching part of the slide piece installed on the mold on the side where the molded product is attached strongly presses the molded product against the mold on the side where the molded product is attached. Since the mold is forcibly released, the molded product can be reliably attached to the desired mold.

That is, it is easily possible as a design matter to attach the molded product to the mold on the side where the adhesion force is smaller, and by doing so, the subsequent ejection and automatic ejection of the molded product can be easily performed.

In addition, the slide piece is designed so that its latching part presses and restrains the molded product against the attachment mold while the mold remains in the clamped state, and the molded product continues to be in the injection molding state against the attachment mold. Since it is attached to the molded product and no excessive external force is applied to the molded product, there is no risk of deformation, whitening, or damage to the molded product.

That is, it is possible to manufacture molded products with good appearance, good quality, and high yield.

Moreover, the molded product can be cooled sufficiently strongly and rapidly, and productivity can be improved by shortening the bottom shape cycle.

Next, in the adhesion side mold, the latching part can be completely removed from the molded product immediately after the mold is opened for a predetermined stroke, and the molded product can be quickly ejected and automatically taken out while the mold opening stroke continues. It is possible to further shorten the bottom cycle and further improve productivity.

Furthermore, the molded product has an external surface that forms an appropriate angle (for example, right angle) to the opening direction of the mold (approximately all molded products have such a surface).

), by providing the slide piece with a latching part that also serves as a mold surface including the external surface, it can be used in a variety of applications, and unnecessary or disadvantageous undercuts can be eliminated, making it easier to mold. It is extremely useful for improving the aesthetic appearance of products.

Next, this invention will be explained with reference to illustrated embodiments.

Figures 1A to 1D show the first embodiment of this invention, in which the molded product is attached to a fixed mold (female mold), the slide piece is released by a pneumatic cylinder, and the slide piece is released by a pneumatic cylinder. 2 shows the main part of a molding die in which the back surface and the sliding portion of the guide section of the guide piece are constructed separately.

This is more important than the movable mold 1 and fixed mold 2, which can be opened and closed.

This molding die is for attaching a molded product 5 to a fixed die 2.

For this reason, the latching portion e that can enter the movable mold 1 on the non-adhering side and hook onto the edge 5a' of the molded product 5 in the mold opening direction.
The slide piece 6', which has an inclined surface 6d' on the rear surface 6c' relative to the surface where the latching portion 6a' is located, is attached to the parting surface of the fixed mold 2 to which the molded product 5 is attached. At the location, the direction is perpendicularly outward to the mold opening direction of the movable mold 1 (to the right in FIGS. 1A, C, and D), that is, the direction in which the latching portion 6a' comes off from the edge 5a' of the molded product 5. attached so that it can slide.

That is, the slide piece 6' is slidably installed in the guide groove 7 provided at the corresponding position of the fixed mold 2, and the protrusions 6b', 6b' on the left and right sides of the upper part are slidably provided by the guide blocks 8, 8. Being restrained.

On the other hand, a recess 9 is provided at a corresponding position on the parting surface of the movable mold 1, which is the non-adhesive side, for storing the slide piece 6' when the mold is closed.
The surface in contact with the inclined surface 6d' of the slide piece 6' is provided as an inclined surface receiver 9a that presses the inclined surface 6d' of the slide piece 6' and clamps the mold using its mold clamping force in the mold clamping state.

Then, a guide piece 10 having a guide portion 10a, which is a plane parallel to the mold opening direction of the movable mold 1 and has a length l equal to the mold opening stroke sufficient to cause the molded product 5 to adhere to the fixed mold 2, is provided. It is fixed to the center of the recess 9 in the movable mold 1 on the attachment side with a bolt 11 so as to protrude upward.

The guide part 10a slides on the restrained surface 6e' of the slide piece 6' in the mold opening direction until the movable mold 1 moves from the fixed mold 2 to the above-mentioned stroke e to open the mold, and engages the latching part e.
a/ prevents the slide piece 6 from escaping (sliding) in the direction away from the edge 5a' of the molded product 5.

The restrained surface 6e' of the slide piece 6' is formed as a surface parallel to the mold opening direction, which is a part of the hole 6f' provided in the slide piece 6' to allow the guide piece 10 to enter.

In the guide piece 10, the tip of the guide part 10a (above the guide part 10a in FIGS. 1A, C, and D)
(or the guide portion 10a of the guide piece 10 in the slide piece 6', or both may be used.

The same applies to each of the following examples.

), the slide piece 6' which has passed through the guide part 10a in the mold opening direction and has come off, is attached to the end edge 5a of the molded product 5 by the latch part 6a'.
The slanted portion 10b is formed to allow sliding in a direction away from the angle 10b (rightward in FIGS. 1A, C, and D).

Next, the slide piece 6' that has passed through the guide part 10a in the mold opening direction is moved at least a distance ( The fixed mold 2, which serves as a side to which the molded product is attached, serves as a means to slide the molded product outward by about 2 to 5 mm) at a right angle to the mold opening direction (rightward in Figure 1 A, C, and D).
A pneumatic cylinder 20 is installed at.

That is, the pneumatic cylinder 20 has its piston rod 2
The cylinder block 20b is fixed to an L-shaped cylinder pedestal 23 with bolts 25, and the cylinder pedestal 23 is fixed to the fixed mold 2 with bolts 24, with the cylinder block 20b arranged so that a is parallel to the sliding direction of the slide piece 6'. It is set up as follows.

The tip of the piston rod 20a is threadedly connected to the slide piece 6.

In order to prevent interference with the piston rod 20a during mold opening/closing operations, a U half-cut groove 26 is formed at a corresponding position on the parting surface of the movable mold 1 to accommodate the piston rod 20a.

20 C in Fig. 1 A is 20 C in the front chamber of the piston 20 d.
Ports e each supply compressed air to the rear chambers.

Next, the effects of the molding die having the above configuration will be explained.

When the mold opening process is started after the injection/cooling process shown in FIG. 1
0 Unable to slide in contact with a (cannot escape).

), so the latching part a a/ is the edge S of the molded product 5.
It rests on the fixed mold 2 while being latched to a/.

Therefore, the molded product 5 is restrained in a pressed state against the fixed mold 2 and is forcibly released from the movable mold 1.

That is, by installing the slide pieces 6' in the number and arrangement according to the shape of the molded product 5 and the adhesion force to the mold, the molded product 5 can be
The mold is reliably released from the movable mold 1 while remaining attached to the fixed mold 2.

On the other hand, compressed air is supplied to the front chamber of the piston 2nd from the start of mold opening, and from the time when the movable mold 1 has opened the mold by 40 strokes of the guide portion 10a (the state shown in FIG. 1C), the slide The piece 6' slides and escapes by a stroke that is the limit of the backward stroke of the piston 20d from the state A in FIG.

As a result, the latching portion 6a' completely comes off from the edge 5a' of the molded product 5.

Thereafter, the molded product 5 is ejected from the fixed mold 2 by an ejector (not shown), and is further ejected or taken by a robot and automatically taken out of the mold.

Next, in the mold closing process, when the movable mold 1 approaches the fixed mold 2, the guide piece 10 enters the hole 6f' of the slide piece 6', and then the slide piece 6' moves into the hole 6f' of the guide piece 10. It gradually slides inward along the inclined portion 10b, and then the restrained surface 6e' slides along the inside of the thread 10a (for example, the state shown in FIG. 1A).

), when the mold closing stroke is completed and the mold is clamped, the sloped surface 6d' of the slide piece 6' is neatly accommodated in the recess 9 along the sloped surface receiver 9a of the fixed mold 2.

When the mold is clamped, the slide piece 6 is rotated on its inclined surface 6.
d is pressed by the inclined surface receiver 9a, and the mold is in a state of strong pressure clamping in which the molten resin can be injected.

Note that when the molded product 5 is in the shape of a container with an open upper edge as in this embodiment, the latching portion 6a' is attached to a vertical wall portion of the molded product 5 that is highly rigid with respect to the mold opening direction in the vertical direction. Since the molded product 5 can be latched, it is difficult for the molded product 5 to be deformed, whitened, or damaged when it is attached to the fixed mold 2, which has a smaller adhesion force.

Next, FIGS. 2A and 2B show a second embodiment of this invention, in which the molded product 5 is attached to the movable mold 1, and the slide piece 6 is released by a pneumatic cylinder 20. , in the slide piece 6, the rear surface 6C1 and the inclined surface 6d are guided by the guide piece 1.
1 shows a molding die configured as a sliding part with a guide part 10a and an inclined part 10b.

That is, the pneumatic cylinder 20 is placed on the parting surface of the movable mold 1 with its piston rod 20a sliding into the ten pieces 6.
The cylinder block 20b is fixed with bolts 21 while the cylinder block 20b is arranged parallel to the sliding direction of the cylinder block 20b.

The tip of the piston rod 20H is connected to the slide piece 6.

In order to prevent interference with the piston rod 20a during mold opening/closing operations, an inverted U-shaped notch groove 22 for accommodating the piston rod 20a is formed at a corresponding position on the parting surface of the fixed mold 2, and The guide piece 10 is
The inverted U-shaped notched groove 2 is arranged in series with the inverted U-shaped notched groove 22.
There are two fixed mountings on the left and right with the same width as 2 (Figure 2B).

The slide piece 6 enters the fixed mold 2 on the non-adhering side and has a latching portion 6a that can be latched to the edge of the folded flange 5a of the molded product 5 in the mold opening direction, and the latching portion 6a is located. Sloped surface 6d on the rear surface 6C relative to the surface
is formed on the parting surface of the side movable mold 1 to which the molded product 5 is attached, in an outward direction perpendicular to the mold opening direction of the movable mold 1 (to the right in FIG. 2A), i.e. The latching portion 6a is attached so as to be slidable in a direction away from the folded flange 5a of the molded product 5.

That is, the slide piece 6 is slidably installed in a guide groove 7 provided at a corresponding position of the movable mold 1, and has protrusions 6b on the left and right sides of the lower part.

6b is slidably restrained by guide blocks 8,8.

On the other hand, a recess 9 is provided at a corresponding position on the parting surface of the fixed mold 2 on the non-adhesive side to accommodate the slide piece 6 when the mold is closed. The surface in contact with the slide piece 6d is provided as an inclined surface receiver 9a that presses the inclined surface 6d of the slide piece 6 and clamps the mold using its mold clamping force in the mold clamping state.

As a continuous part of the inclined surface support 9a, a plane parallel to the mold opening direction of the movable mold 1 and having a length l equal to the mold opening stroke sufficient for the molded product 5 to adhere to the movable mold 1 is provided. A guide piece 10 having a guide portion 10a is installed on the fixed mold 2 on the non-adhesive side with a bolt 11.

The guide part 10a is connected to the rear surface 6 of the slide piece 6 until the geometrical mold 1 moves from the fixed mold 2 to the above-mentioned stroke e type opening.
C and slide in the mold opening direction, and the latching portion 6a prevents the slide piece 6 from escaping (sliding) in the direction in which the molded product 5 is removed from the folding flange 5a.

The rear surface 6C of the slide piece 6 is formed as a surface parallel to the mold opening direction.

In the guide piece 10, the tip (second
The lower part of the guide piece 10 in FIG. The slanted portion 10b is formed to allow sliding in the right direction).

Next, to explain the effects of the molding die according to the second embodiment, the effects of this embodiment are as follows: (a) the slide piece 6;
And the pneumatic cylinder 20, which is a means for releasing this, moves together with the movable mold 1, which is the side to which the molded product 5 is attached.

(b) The molded product 5 is released from the fixed mold 2 while being attached to the movable mold 1.

(c) The guide piece 10 remains stationary together with the fixture 2.

b) The point at which the back surface 6C of the slide piece 6 then slides on the guide portion 10a of the guide piece 10.

The functions and effects are the same as those of the first embodiment above, except for the following differences.

That is, the first embodiment has a structure in which the molded product 5 is attached to the fixed mold 2, and the second embodiment has a structure in which the molded product 5 is attached to the movable mold 1.

Next, FIGS. 3 to 6 show the main parts of a molding die that is a third embodiment of this invention and uses an inclined guide pin as a means for letting the slide piece 6 escape.

That is, the opening and closing movement of the movable mold 1, which can be opened and closed with respect to the fixed mold 2, is guided by the guide pins 3.

In the figure, 4 is a guide bushing fixed to the fixed mold 2.

This molding die has a structure in which a molded product 5 is attached to a movable die 1.

For this reason, as shown in FIG. 4 in the mold opening direction after entering the fixed mold 2 on the non-adhesive side, the molded product 5 is placed at a corner portion (however, it is not limited to this position).

), the slide piece 6 has a latching portion 6a that can be latched to the edge of the folded flange 5a of the molded product 5, and has an inclined surface 6d on the rear surface 6C relative to the surface where the latching portion 6a is located. The parting surface of the movable mold 1, which is the side to which the product 5 is attached, has a latching portion 6a facing outward at right angles to the mold opening direction of the movable mold 1 (to the right in FIG. 3). It is attached so that it can slide in the direction away from the folded flange 5a of No.5.

That is, as shown in FIG. 5A, the slide piece 6 is slidably installed in the guide groove 7 provided at the corresponding position of the movable mold 1, and the protrusions 6b on the left and right sides of the slide piece 6 are connected to the guide block 8. , 8.

On the other hand, a recess 9 is provided at a corresponding position on the parting surface of the fixed mold 2 on the non-adhesive side to accommodate the slide piece 6 when the mold is closed. The surface in contact with the slide piece 6d is provided as an inclined surface receiver 9a that presses the inclined surface 6d of the slide piece 6 and clamps the mold using its mold clamping force in the mold clamping state.

Continuing from the mouth edge of the inclined surface receiver 9a, there is a plane parallel to the mold opening direction of the movable mold 1,
A guide piece 10 having a guide portion 10a having a length e equal to the mold opening stroke sufficient for the molded product 5 to adhere to the movable mold 1 is fixed to the fixed mold 2 on the non-adhesive side with bolts 11. .

The guide part 10a is connected to the rear surface 6 of the slide piece 6 until the movable mold 1 moves from the fixed mold 2 to the above-mentioned stroke l-shape opening.
C and slide in the mold opening direction, and the latching portion 6a prevents the slide piece 6 from escaping (sliding) in the direction in which the molded product 5 is removed from the folding flange 5a.

The rear surface 6C of the slide piece 6 is formed as a surface parallel to the mold opening direction.

In the guide piece 10, the tip (third
The lower part of the guide piece 10 in the figure) is the direction in which the slide piece 6 that has passed through the guide part 10a in the mold opening direction and has come off has its latching part 6a detached from the folding flange 5a of the molded product 5 (as shown in FIG. 6A). The slanted portion 10b is formed to allow sliding in the right direction.

Next, the slide piece 6 that has passed through the guide part 10a in the mold opening direction is moved at least a distance (2 to 5 m
m) in the outward direction perpendicular to the mold opening direction (toward the right in Figure 3), the fixed mold 2 on the non-stick side is provided with a length suitable for the distance to release the slide piece 6. An inclined guide pin 12 with a fixed angle and direction is installed, and is provided so as to penetrate through the corresponding position of the slide piece 6 (it is penetrated into L13).

The hole 13 is provided in the slide piece 6 in parallel with the inclined guide pin 12.

The hole diameter or hole shape is such that the latching portion 6a moves in the direction in which the latching portion 6a comes off from the folding flange 5a of the molded product 5 until the movable mold 1 is opened with a stroke corresponding to the length l of the guide portion 10a of the guide piece 10. The slide piece 6 is allowed to remain in a non-sliding state, and the latching portion 6a remains latched to the folded flange 5a of the molded product 5 in a stationary state, and the guide portion 1
It is constructed to have a gap S of a size such that the inclined guide pin 12 comes into contact with the right side surface of the hole 13 in FIG.

From the time when the inclined guide pin 12 comes into contact with the right side of the hole 13 in FIG. 3, the movable mold 1 moves as shown in FIGS. 6A and 6H.
The mold opening stroke causes the slide piece 6 to move (slide) in a direction in which its latching portion 6a is released from the molded product 5.

14 in the figure is a recess for accommodating the inclined guide pin 12, which is provided at a corresponding position on the parting surface of the movable mold 1, and the right side in FIGS. 4 and 3 is a stopper that defines the escape limit position of the slide piece 6. .

As explained in the previous embodiment, the escape limit position of the slide piece 6 is a position at a distance at which the latching portion 6a is completely removed from the folding flange 5a of the molded product 5, and the position is at a distance where the latching portion 6a is completely removed from the folding flange 5a of the molded product 5. The inclined surface 6d of the slide piece 6 that has moved to close the mold together with the guide piece 10 is the inclined part 10 of the guide piece 10.
b, and is set at an appropriate position to be moved inward by sliding along the inclined portion 10b.

Next, the effects of the molding die of the third embodiment will be explained.

When the mold opening process is started after the injection/cooling process shown in FIG. do not have.

) Therefore, the latching portion 6a moves together with the movable mold 1 while being latched to the folded flange 5a of the molded product 5.

Therefore, the molded product 5 is held against the movable mold 1 by the latching portion 6a of the slide piece 6, and is forcibly released from the fixed mold 2.

That is, by installing the slide pieces 6 in a number and arrangement according to the shape of the molded product 5 and the adhesive strength of the mold, the molded product 5 can be reliably separated from the fixed mold 2 while remaining attached to the movable mold 1. It will be molded.

During the mold opening stroke after the movable mold 1 has opened a stroke corresponding to the length l of the guide portion 10a as shown in FIG. 6A, the slide piece 6 moves toward the inclined guide as shown in FIG. 6B. After being pushed (released) by the guiding effect of the pin 12, the latching portion 6a completely separates from the folded flange 5a of the molded product 5.

Then, the slide piece 6 hits the stopper 15 and stops at its escape limit position (approximately the position shown in FIG. 6B).

On the other hand, the movable mold 1 continues to move by a predetermined mold opening stroke, and the molded product 5 is ejected from the movable mold 1 by an ejector (not shown), and is further ejected or taken by a robot. and is automatically ejected from the mold.

Next, in the mold closing process, when the movable mold 1 approaches the fixed mold 2, the inclined guide pin 12 first enters the hole 13 of the slide piece 6.

Further, the inclined surface 6d of the slide piece 6 gradually slides inward along the inclined portion 10b of the guide piece 10, as shown in FIG. 6B, for example.

) After that, the rear surface 6C slides along the guide portion 10a (for example, as shown in FIG. 6A).

) When the mold closing stroke is completed and the mold is clamped, the sloped surface 6d of the slide piece 6 fits properly into the recess 9 along the sloped receiver 9a of the fixed mold 2.

When the mold is clamped, the sloped surface 6d of the slide piece 6 is pressed by the sloped surface receiver 9a, resulting in a strong mold clamping state in which the molten resin can be injected.

Next, FIG. 7 shows a fourth embodiment of this invention, in which an elastic member is used as a means for releasing the slide piece 6 in the direction in which the latching portion 6a of the slide piece 6 is removed from the molded product 5 by at least the distance that the slide piece 6 is completely removed from the molded product 5. A molding die configured using a blower is shown.

Most of the configuration of the molding die is the same as the configuration of the third embodiment, so common components are indicated with common reference numerals.

The feature of this embodiment is that the drive spring 17, which serves as a resilient body for releasing the slide piece 6 in the direction in which its latching portion 6a comes off from the molded product 5, is placed on the front side of the slide piece 6 (the same side as the latching portion 6a). The left end of the drive spring 17 is brought into contact with the corresponding end surface 1B of the movable mold 1 to which the molded product 5 is to be attached, thereby holding the slide piece 6 so that its latching portion 6a is molded. The structure is such that a spring action (pressing action) is exerted in the direction away from the folded flange 5a of the product 5 (rightward in FIG. 7).

Note that polyurethane, rubber, etc. can also be used as the projectile.

The effect of this fourth embodiment is that during the mold opening stroke after the movable mold 1 has opened the mold by a stroke corresponding to the length of the guide portion 10a, the sliding piece 6 is moved by the pressing action of the drive spring 17. is released until it hits the stopper 15 in the direction in which the latching portion 6a is removed from the molded product 5, and the inclined surface 6d of the slide piece 6 in the mold closing process.
The point at which the slide piece 6 is gradually slid inward along the slope part 10b and the guide part 10a of the guide piece 10 while compressing the drive spring 17 from the time when the slide piece 6 comes into contact with the slope part 10b of the guide piece 10. Except for the difference, the operation and effect are the same as those of the third embodiment, and the molded product 5 can be reliably attached to the movable mold 1.

[Brief explanation of the drawing]

Figures 1A and B are a sectional view and a partially sectional right side view of a molding die that is the first embodiment of this invention, and Figures 1C and D are the same as those in Figures 1A and H, respectively. Cross-sectional views showing different states of the mold opening process of a molding die, FIG. 2A is a cross-sectional view showing a second embodiment of this invention, and FIG. 2B is taken along line B-B in FIG. 2A.
3 and 4 are a sectional view and a plan view of a molding die which is a third embodiment of this invention, and FIGS. 5A and 5B.
are sectional views taken along lines AA and BB in FIG. 3, FIGS. 6A and B are sectional views showing different states of the mold opening process of the molding molds shown in FIGS. 3 and 4, respectively, and FIG. 7. FIG. 3 is a sectional view showing a molding die according to a fourth embodiment of the invention. DESCRIPTION OF SYMBOLS 1... Movable mold, 2... Fixed mold, 6... Slide piece, 6a... Latching part, 6C... Core back (sliding part), 6d... Inclined surface ( slope part), 10... guide piece,
10 a...Guide part, l...Length of guide part, 10
b... Inclined portion, 9a... Inclined surface support, 12... Inclined guide pin, 13... Hole, S... Gap, 17...
- Drive spring (elastic body), 20... pneumatic cylinder.

Claims (1)

[Scope of Claim for Utility Model Registration] In a mold for forming a mold consisting of a movable mold 1 which can be opened and closed, a fixed mold 2 and a slide piece 6, (a) a mold of the mold in the slide piece 6 and the molded part 5; A latching portion 6a is provided on an external surface that forms an appropriate angle with respect to the opening direction and also serves as a mold surface, and (b) the slide piece 6
The above-mentioned latching portion 6a is attached to the mold 2 to which the molded product 5 is attached.
is installed so that it can slide in the direction in which it comes off from the molded product 5, and (c) until the movable mold is opened from the fixed mold by a predetermined stroke, the slide piece 6 and the slide piece 6 serve as sliding surfaces parallel to the mold opening direction. A guide piece 10 having a guide portion 10a that comes into sliding contact is installed on the non-adhesive side mold 1 of the molded product 5, and (2) either the lid or both of the slide piece 6 or the guide piece 10 is provided with the predetermined At the stage of opening the stroke mold,
Inclined portions 6 d and 10 that allow the slide piece 6 to retreat
(b) is formed as an extension of the sliding surface; (e) is provided with a driving means for sliding the slide piece 6 at the stage when the mold is opened by the predetermined stroke; A molding die characterized in that an inclined surface 6d is provided on the non-adhesive side of the mold 1 for the molded product, and an inclined surface receiver 9 that presses against the inclined surface of the slide piece 6 when the mold is clamped is provided.