JPH1177688A - Molding mold and its molding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mold the stoker part of a narrow pitch disk changer without thickening a wall excessively to cope with demolding and to stock disks different in size such as 8 cm and 12 cm. SOLUTION: A space for molding a hook projecting opposite to an angle wall 1 in a bottom wall is provided, and first and second inserts 4, 5 for molding angle walls 1 are provided alternately. The inserts 4, 5 are capable of independent demolding action. The demolding action of one insert is followed by the demolding action of the other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding die and a molded product thereof, and more particularly to a molding die and a molded product for molding a molded product constituting an auto changer for a disk which is effective for stocking a large number of disks. Things.

[0002]

2. Description of the Related Art In recent years, audio-related products provided with an auto changer for a disk have appeared.
Some large-capacity discs capable of accommodating zero or 100 discs have come out.

A conventional disk stocker in such a large-capacity autochanger is as shown in FIGS. That is, the conventional disk stocker 14 includes a number of crescent-shaped walls 10 for supporting the disk D, and a wall 1 for connecting these walls 10 to each other.
Thick part 11 around 0 and undercut rib 13A
And the walls 13 on both sides, which are formed integrally with a resin. Reference numeral 15 denotes a wire, which is provided at a distance from the disk stocker 14 in the radial direction of the disk D, and can support one point of the disk D. The disk D is held by the wire 15 and the disk stocker 14.

FIG. 10 shows a molding die for molding the disk stocker 14 shown in FIGS. 7 to 9 described above. As shown in FIG. 9, the wall 10 has a draft angle of 1 °,
The molding die of FIG. 10 includes a cavity insert 16 forming the wall 10 having the draft angle, a core insert 17 forming the thick portion 11 of the joint, and a slide insert forming the undercut portion of the side wall 13. 18 is provided.

[0005]

In such a conventional disk stocker 14 and a mold for molding the same, the deep rib-like wall 10 must be removed from the mold insert 16 of the fixed mold after the molding. For this reason, the wall 10 has the above-mentioned draft angle, but the draft angle of one surface of the wall 10 needs to be 1 ° as described above because the mold is left unbroken. Therefore, the height of the wall 10 is 30 mm at the maximum, and the pitch between the walls 10 is 3.4 at the minimum, depending on the size of the disk stock space and the draft.
mm is the limit.

Further, in such a conventional disk stocker 14, as described above, the height of the wall 10 is 3 at a maximum.
Since it is only 0 mm and the disk D of a fixed size can be held only by the crescent-shaped disk stocker 14 and the fixed position of the wire 15, it is impossible to stock a plurality of types of disks having different sizes, for example, 12 cm and 8 cm. .

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and enables forming of a stocker portion of a narrow-pitch disc changer without adding an extra thickness for countermeasures against mold release. It is an object of the present invention to make it possible to stock a plurality of types of discs having different types.

[0008]

SUMMARY OF THE INVENTION In order to achieve this object, the present invention has a space for forming a hook projecting from a bottom wall on a side opposite to a mountain-shaped wall, and forms a plurality of mountain-shaped walls. Each having a plurality of first and second inserts alternately, and the first and second inserts are configured so as to be able to perform a releasing operation independently of each other. After the insert performs the releasing operation, the other insert is configured to perform the releasing operation.

[0009] Thus, the subsequent release resistance is halved by the release operation of one of the inserts, and the entire mountain-shaped wall is released by the release in the pulling direction based on the undercut of the hook. Therefore, a high angled wall for supporting the disk is formed at a small pitch interval.

[0010]

According to the first aspect of the present invention, a plurality of chevron-shaped walls having a height capable of supporting a plurality of discs in a standing posture at predetermined pitches and a plurality of chevron-shaped walls are attached to each other. A mold for molding a molded product having a bottom wall for connecting and a hook protruding on the opposite side of the bottom wall from the chevron wall has a space for molding the hook, and A plurality of first and second inserts for forming a plurality of chevron-shaped walls are alternately provided, and the first and second inserts are configured to be capable of performing a releasing operation independently of each other. Then, after one of the inserts performs the release operation, the other insert can perform the release operation.

[0011] With this configuration, since the mountain-shaped wall capable of supporting the disk is formed by two inserts and one of the inserts is separated from the other first, the release resistance is reduced by half, and the mold is reduced. When the is opened, the molded product is pulled out to the hook shape side.

According to a second aspect of the present invention, there are provided a plurality of chevron-shaped walls having a height capable of supporting a plurality of disks in a standing posture at predetermined pitches, and a bottom for connecting the plurality of chevron-shaped walls to each other. It has a wall and a hook protruding on the opposite side of the bottom wall from the chevron wall.

Thus, a plurality of types of discs having different sizes such as 8 cm and 12 cm are stocked while being supported in a standing posture by the chevron wall and the bottom wall. The hook is used to fix the molded article to another member.

According to a third aspect of the present invention, a protrusion for supporting a disk at two points on the circumference between adjacent mountain-shaped walls and a lower end of the disk supported by the protrusion are provided. And a hole formed in the bottom wall for passing through.

[0015] This makes it possible to more reliably support the disk by the projections and the holes, and to make the 8 cm
And a plurality of types of discs having different sizes, such as 12 cm, are stocked in a more stable state.

1 to 3 show a disk stocker 21 as a resin molded product according to the present invention. The disc stocker 21 has a number of chevron walls 1 for supporting the discs 19 and 20. This many mountain-shaped walls 1
Has a draft angle of 0.37 ° on one side and a maximum height of 42 mm
In addition, 32 disks 19 and 20 can be supported at a pitch of 3 mm. In the disk stocker 21, reference numerals 2 and 2 denote a pair of bottom plate-like walls connecting the walls 1 to each other. These bottom plate-shaped walls 2 have projections 22, 22 for supporting the disks 19, 20 at two points on the circumference. A hole 23 is formed between the walls 2 and 2 to allow the lower ends of the disks 19 and 20 supported by the projections 22 and 22 to pass through. Yamagata Wall 1
The projection 24 is integrally formed with the projection 24 projecting downward through the hole 23.
The lower end portions 9 and 20 can be supported.

L-shaped hooks 3 are provided on the opposite sides of the walls 2 and 2 from the mountain-shaped wall 1 so as to face each other. These hooks 3, 3 are provided seven each in the direction of the support row of the disks 19, 20. These hooks 3, 3 are necessary for releasing the chevron walls 1, 1 when releasing the mold as described later. For this reason, it is preferable to provide as many as possible.

FIGS. 4 and 5 show a mold for molding the disk stocker 21 shown in FIGS. Here, reference numerals 4 and 5 denote mold inserts for forming a large number of mountain-shaped walls 1 at a constant pitch. The mold insert 4 is formed in a long thin plate shape, and the mold insert 5 is formed short, and 32 of these mold inserts 4 and 5 are alternately arranged. The mold inserts 4 and 5 are configured to be able to perform a mold release operation independently from the illustrated mold clamping state.

The both ends of these many mold inserts 4 and 5 are structured to be tightened by slide inserts 6 and 6 which receive the force of the locking blocks 7 and 7. 8 is a core insert for forming the hook 3, 9
Is an inclined pin 9 for releasing the hook 3 from the mold.

In such a configuration, according to the disk stocker 21 described above, the disks 19, 20 are supported at the maximum height of the chevron wall 1, for example, the disk 19 having a diameter of 8 cm. And the disk 20 having a diameter of 12 cm are both supported in the same state. Disc 1
The drawers 9 and 20 are pulled out of the slit between the walls 1 by using a lever.

The disk stocker 21 is fixed to a sheet metal by L-shaped hooks 3, 3 protruding from bottom walls 2, 2 connecting a number of walls 1 constituting a disk support surface, thereby forming a disk changer. Is fixed to the main body.

Next, the operation of the mold at the time of releasing after the disk stocker 21 is formed will be described with reference to FIG. At the time of mold release after molding, first, utilizing the fact that the disk stocker 21 as a molded product has an undercut based on the shape of the hook 3, a thin plate-like long mold insert is left with the short mold insert 5 left. Only 4 is removed first, thereby halving the subsequent release resistance. Then, utilizing the undercut based on the shape of the hook 3 described above, the entire wall 1 is released from the mold insert 5 by pulling the disk stocker 21 as a molded product toward the core insert 8 having the protruding structure. . FIG. 6 shows the state at this time. The hook 3 is
In addition to the L-shape as described above, an effect based on the undercut can be similarly exerted even if the angle is 10 ° or more with respect to the mold releasing direction.

As described above, every other mold insert 4 with the mold insert 5 interposed therebetween is pulled out first and the subsequent mold release resistance is reduced by half, so that the disk stocker 21 as a molded product is protruded when the mold is opened. It is possible to leave on the template side having the structure, and it is possible to form high walls supporting the disk at a narrow pitch interval. In addition,
In the above description, the operation in which the insert 4 is operated first has been described. However, the case where the insert 5 is operated first can be similarly performed.

[0024]

As described above, according to the present invention, a plurality of first and second pluralities for forming a plurality of chevron-shaped walls are provided.
And the first and second inserts are configured to be able to perform a release operation independently of each other, and after one of the inserts performs the release operation, the other Since the insert is configured to perform the release operation, the subsequent release resistance can be halved by the release operation of one of the inserts, and the entire angled wall can be removed by the release in the tensile direction based on the undercut of the hook. Since it is possible to release the mold, and it is possible to form a high mountain-shaped wall for supporting the disk at a narrow pitch interval, the disk can be stably supported, and therefore, for example, a disk that fits in a small space only in the stocker portion. It can provide stocker parts for changers.

[Brief description of the drawings]

FIG. 1 is a side view of a disk stocker as a molded product according to an embodiment of the present invention.

FIG. 2 is a front view of the disk stocker.

FIG. 3 is a bottom view of the disc stocker.

FIG. 4 is a front view of a molding die according to an embodiment of the present invention for injection-molding the disk stocker.

FIG. 5 is a side view of the molding die.

FIG. 6 is a front view showing the mold opening state of the molding die.

FIG. 7 is a side view of a disk stocker as a conventional molded product.

FIG. 8 is a front view of the disc stocker.

FIG. 9 is a sectional view taken along line AA in FIG. 7;

FIG. 10 is a front view of a conventional molding die for molding the disk stocker shown in FIGS. 7 to 9;

[Explanation of symbols]

 Reference Signs List 1 wall 2 wall 3 hook 4 cabinet insert 5 cabinet insert 8 core insert 19 disk 20 disk 21 disk stocker

Claims (3)

[Claims] 1. A plurality of mountain-shaped walls having a height capable of supporting a plurality of disks in a standing posture at predetermined pitches, a bottom wall for connecting the plurality of mountain-shaped walls to each other, and A mold for molding a molded article having a hook protruding on the opposite side to the chevron wall, the mold having a space for molding the hook and forming a plurality of chevron walls. Are alternately provided with a plurality of first and second inserts, respectively, and the first and second inserts are configured to be capable of performing a releasing operation independently of each other. A molding die, characterized in that the other insert is capable of performing a releasing operation after performing a releasing operation. 2. A plurality of mountain-shaped walls having a height capable of supporting a plurality of disks in a standing posture at predetermined intervals, a bottom wall for connecting the plurality of mountain-shaped walls to each other, and A molded article having a hook protruding on the opposite side to the chevron wall. 3. A projection for supporting the disk at two points on the circumference between adjacent mountain-shaped walls, and a bottom wall for passing the lower end of the disk supported by the projection. The molded article according to claim 2, wherein the molded article has a hole formed.