JPS62104721A - Molding equipment - Google Patents

Abstract

PURPOSE:To enable cores to set at the predetermined position of the molding surface of a mold by a structure wherein a groove is formed on the molding surface of a movable mold and, in addition, an intermediate mold is provided so as to freely advance to and retreat from said groove in order to house the tips of the fingers of a core loader in the groove. CONSTITUTION:First, after a movable mold 3 is parted from a fixed mold, an intermediate mold 6 is retreated in the groove 5 of the movable mold 3 by contracting rods 7a and 8a through the actuation of air cylinders 7 and 8. Secondly, a core W, which is held by the holding members 11 of a core loader 9, is advanced above the projecting surface of the molding surface 3b of the movable mold 3 and then lowered towards the movable mold 3. In that case, the tips of the holding members 11 are housed in the groove 5 part, which is produced by the retreated intermediate mold 6 arranged on the molding surface 3b side of the opposing movable mold 3. Consequently, the abutting of the tip of the holding member 11 against the molding surface 3b of the movable mold 3 is avoided and the core W is set at the predetermined position of the molding surface 3b of the movable mold 3.

Description

[Detailed Description of the Invention] [Field of Industrial Application] 'i The present invention relates to a molding device in which a middle mold is disposed between a fixed mold and a movable mold. In order to prevent the tip of the finger from contacting the mounting surface of the mold before the core and to place the core at a predetermined position 1 in the mold when the core held by the fingers is mounted on the mold. This invention relates to a molding device in which a groove is formed in the molding surface of the mold facing the finger of the core mounting machine, and a middle die that can move forward and backward into the groove is provided.

[Conventional technology]

Conventionally, in a molding apparatus that includes a mold consisting of a fixed mold and a movable mold, and a core mounting machine for arranging a core in this mold, Japanese Patent Publication No. 4B-5406 (Patent Application No. 40-363
No. 99) can be mentioned.

However, the molding apparatus disclosed in Japanese Patent Publication No. 4B-5406 has the following problems when attempting to place the core at a predetermined position in a fixed or movable mold using a core mounting machine.

In other words, the publication states, ``It is preferable that the jig be rectangular and have the same dimensions as the surface of the mold so that the core can be installed at any position across the mold.'' It is stated that. This indicates that the inner wall surface of the jig must be parallel to at least one inner wall surface of the mold, and must be aligned with the inner wall surface when transferring the core into the mold. is extremely limited, and the mold shape and jig shape are also limited.
There is a problem with lack of versatility.

Therefore, in order to solve this problem, the sixth
A molding device as shown in the figure is used.

In FIG. 6, 51 is a movable type, and this movable type 5
A movable die plate 52 is provided on one side of 1.
A molding surface 51a is formed on the other surface. Further, on the outside of the movable mold 51, a core mounting machine 53 is installed which places the core W on the zero width surface (not shown) of the movable mold 51 and makes it face the molding surface 51a.
are arranged so that they can move forward and backward. The core mounting machine 53 includes a main body 54 formed in the shape of a rectangular parallelepiped, and a plurality of fingers 5 suspended from the lower surface of the main body 54.
It consists of 5.

When setting the core W on the molding surface 51a of the movable mold 51 using the core mounting machine 53, the movable mold 51 is opened and the core mounting machine 53 located outside is set. The core W is gripped by the fingers 55, and the core mounting machine 53 is advanced onto the molding surface 51a of the movable mold 51. Next, the core mounting machine 53 is moved in the direction of the movable mold 51 to set the core W at a predetermined position on the zero width surface (not shown). After that, the core mounting machine 53 is moved back from above the movable mold 51, and the movable mold 51
A fixed mold (not shown) disposed opposite to the molding surface 51a of the mold is closed to form a molded product in which the core W is cast.

[Problem that the invention seeks to solve]

However, in such a molding apparatus, when setting the core W on the molding surface of the movable mold 51, the core W held by the fingers 55 of the core mounting machine 53 is placed on the molding surface 51a of the movable mold 51. Since the tip 55a of the finger 55 comes into contact with the molding surface 51a before it is set, there is a problem that the core W cannot be accurately set at a predetermined position on the molding surface 51a.

Therefore, this invention was made to eliminate the above-mentioned problems, and by forming a groove in the molding surface of a movable mold and providing a middle mold that can move forward and backward in this groove, the finger of the core mounting machine is The purpose is to accommodate the core in the groove so that the core can be accurately set at a predetermined position when setting it on the molding surface of the mold.

[Means for solving problems]

That is, in the molding apparatus according to the present invention, the movable mold is arranged to be openable and closable so that the molding surface faces the molding surface side of the fixed mold, and a groove is formed in the molding surface of the movable mold. A medium mold constituting a part of the mold is provided in the groove so as to be movable forward and backward with respect to the groove, a molding surface corresponding to the molding surface of the fixed mold is formed on the medium mold, and a movable mold is provided near the movable mold. A core mounting machine that sets the core on the molding surface of the mold is provided so that it can move forward and backward with respect to the movable mold.

[Effect]

In such a molding device, when molding a molded product by setting a core on the molding surface of a movable mold using a core mounting machine, the movable mold is opened from the fixed mold to open the molding surface. In this state, move the middle mold back toward the bottom of the groove of the movable mold. Next, the core held by the gripping part of the core mounting machine is advanced onto the projection plane of the molding surface of the movable mold, and the core mounting machine is lowered toward the movable mold.

At this time, the tip of the gripping part of the core mounting machine is accommodated in the groove created by the retreat of the middle mold placed on the molding surface side of the movable mold facing the gripping part, and the tip of the gripping part and the movable Contact with the molding surface of the mold is avoided, and the core is disposed at a predetermined position on the molding surface of the movable mold.

Then, after the core is placed at a predetermined position on the molding surface and fixed to the zero width surface of the movable mold, the grasping state of the core in the gripping section of the core mounting machine is released, and the core mounting The machine is moved back from above the projection surface of the molding surface of the movable mold. Continuing,
The middle mold is advanced toward the core and stopped at a predetermined position so that the molding surface of the movable mold and the molding surface of the middle mold are flush with each other.

In this state, the movable mold is closed to the fixed mold, and a molding space is formed by the molding surfaces of the core and the movable mold, the molding surfaces of the core and the middle mold, and the molding surfaces of the core and the fixed mold. Then, a molding material such as plastic is preliminarily solidified in the molding space, and a molded product is formed by casting the core.

Thereafter, the movable mold is opened from the fixed mold to open the molded part, and the molded product with the core cast inside is taken out.

Then, the core is removed from the molded product using an appropriate method to obtain a hollow molded product.

〔Example〕

Embodiments of the molding apparatus according to the present invention will be described in detail below with reference to the drawings.

(First Embodiment) FIG. 1 is a cross-sectional view illustrating a first embodiment of a molding apparatus according to the present invention, FIG. 2 is a plan view of a movable mold part in the molding apparatus shown in FIG. 2 is a front view cut along the line ■-■, and FIG. 4 is a side view taken from the direction A in FIG. 3.

In FIGS. 1 to 4, 1 is a stationary die, one side of the stationary die 1 is formed flat and fixed to a stationary die plate 2, and the other side has four semicircular recesses 1a.
A molding surface 1b and a baseboard surface (not shown) are provided, and the periphery thereof is a flat contact surface IC.

Further, a movable mold 3 is disposed on the molding surface 1b side of the fixed mold 1 so as to be able to close and open the mold, and its negative surface is formed flat and fixed to the movable die plate 4. The other surface of the movable mold 3 is provided with a molding surface 3b in which four semicircular recesses 3a are formed and a baseboard surface 3d at a portion opposite to the recess 1a of the fixed mold 1, and the surrounding area is flat. The abutment surface 3c is formed in the following manner.

Furthermore, a dovetail-shaped concave groove 5 with an enlarged inner part is formed in the molding surface 3b of the movable mold 3 in the longitudinal direction, and both ends and the upper part of the concave groove 5 are open.

Further, in the groove 5, a middle mold 6 whose both ends protrude from both side surfaces of the movable mold is provided so as to be movable toward and away from the molding surface 3b of the movable mold 3. Flanges 6d are formed at the bottom of the medium 6 on both sides in the longitudinal direction, and enlarged portions 5a of the grooves 5 are formed.
It is inserted into the movable mold 3 so that it does not come out from the molding surface 3b of the movable mold 3. Further, the fixed mold 1 side of the medium mold 6 is a molding surface 6b that is continuous with the molding surface 3b of the movable mold 3 and has a semicircular recess 6a formed therein corresponding to the molding surface 1b of the fixed mold 1, and the surrounding area thereof. is a contact surface 6C formed flat.

Further, air cylinders 7.8 are fixed to both sides of the movable mold 3, and the tips of the respective rods 7a, 8a are fixed to the bottom of the medium mold 6. And both air cylinders 7
．． 8 operate synchronously, and when each rod 7a, 8a is extended, the middle mold 6 moves forward in the direction of the fixed mold l, and its abutting surface 6
C and the molding surface 6b are flush with the contact surface 3C and molding surface 3b of the movable mold 3 and stop, and each rod 7a
, 8a are contracted, the middle mold 6 moves back, completely immerses into the groove 5 of the movable mold 3, and stops.

Further, a core mounting machine 9 is disposed near the movable mold 3, and is movable forward and backward in the directions of the movable mold 3 by a drive source (not shown). The core mounting machine 9 includes a main body 10 formed in the shape of a rectangular parallelepiped, and a pair of gripping members 11 that are hung from the lower part of the main body 10 so as to be openable and closable. A hemispherical concave gripping groove 11a is formed on the opposing surface below the pair of gripping members 11, and is configured to grip a core W used in molding a molded product (not shown). It has become.

When the movable mold 3 is opened, the molding surface 3b of the movable mold 3 is positioned below the tip 11b of the gripping member 11 of the core mounting machine 9, and the core W is gripped by the gripping member 11J.
The core W is gripped by the movable mold 3 and moved forward onto the molding surface 3b of the movable mold 3, and further lowered toward the movable mold 3 to set the core W on the baseboard surface 3d of the movable mold 3 so as to face the molding surface 3b. After the core W is set, it rises above the molding surface 3b of the movable mold 3 and retreats to its original position.

In the molding apparatus configured as described above, when molding a molded product by setting the core W on the molding surface of the movable mold 3 using the core mounting machine 9, the movable mold 3 is replaced with the fixed mold. With the mold opened from 1 and the molding surface section open, open both air cylinders 7.
．． 8, the rods 7a and 8a are reduced to reduce the medium size 6.
is retreated into the groove 5 of the movable mold 3.

Next, the core W is held by the gripping member 11 of the core mounting machine 9 and moved forward onto the projection plane of the molding surface 3b of the movable mold 3, and the core mounting machine 9 is lowered in the direction of the movable mold 3. .

At that time, the tip 11b of the gripping member II of the core mounting machine 9 is
The middle mold 6 disposed on the molding surface 3b side of the movable mold 3 facing the gripping member 11 is accommodated in the groove 5 created by retreating, and the tip 11b of the gripping member 11 and the molding surface 3b of the movable mold 3 are connected to each other. At the same time, the core W is set at a predetermined position on the molding surface 3b of the movable mold 3.

Then, when the core W is set at a predetermined position on the molding surface 3b of the movable mold 3 and fixed to the baseboard surface 3d of the movable mold 3, the core W is held in place by the gripping member 11 of the core mounting machine 9. At the same time as releasing the gripping state, the core mounting machine 9 is moved to the molding surface 3 of the movable mold 3.
It is moved back from within the projection plane of b and stopped at the original position.

Subsequently, both air cylinders 7.8 are operated in the opposite direction, the lofts 7a and 8a are extended, and the medium mold 6 is advanced in the direction of the core W, thereby forming the molding surface 3b of the movable mold 3 and the molding surface 6b of the medium mold 6. The core W is stopped at a predetermined position so that the core W is located on the molding surfaces 3b and 6b formed by the molding surfaces 3b and 6b.

In this state, the movable mold 3 is moved in the direction of the fixed mold 1 and the mold is closed. A molding space portion is formed by one molding surface 1b.

Then, a molded product (not shown) in which the molding space is filled with a molding material such as plastic, solidified, and the core W is cast.
to form.

Thereafter, the movable mold 3 is opened from the stationary mold to open the molded part, and the molded product in which the core W has been cast is taken out. and,
The core W is removed from the molded product by an appropriate method to obtain a hollow molded product.

In this embodiment, the middle mold is disposed as a movable mold, but the present invention is not limited to this. That is, it is also possible to arrange the core in a fixed manner, which of course solves the problem that the present invention aims to achieve.

(Second Embodiment) FIG. 5 shows a sectional view illustrating a second embodiment of the molding apparatus according to the present invention.

In FIG. 5, 15 is a fixed type, and this fixed type 1
One side of 5 is formed flat and fixed to the fixed die plate 16, and the other side is provided with a molding surface 15b in which one hemispherical recess 15a is formed and a zero width surface (not shown). The periphery is a flat contact surface 15C. A convex portion 15d extending downward is formed in a part of this contact surface 15C, and a convex portion 15d is formed inside the convex portion 15d.
A tilted pin 15e that tilts toward the side is formed.

Further, a movable mold 17 is disposed on the molding surface 15b side of the fixed mold 15 so as to be able to close and open the mold, and its negative surface is formed flat and fixed to a movable die plate 18. The other surface of the movable mold 17 is a concave portion 15a of the fixed mold 15.
A molding surface (not shown) with one semicircular recess (not shown) formed therein and a baseboard surface (not shown) are provided at a portion corresponding to the molding surface, and a baseboard surface (not shown) is provided around the baseboard surface. This is a contact surface 17a.

Further, a dovetail-shaped groove 19 is formed on the contact surface 17a side of the movable die 17, and both ends and the upper side of the groove 19 are open. Furthermore, a recessed hole 17b is formed in the movable mold 17, and the upper and side surfaces thereof are open so that the inclined bin 15e of the fixed mold 15 can be accommodated therein. A support body 17c protruding from the bottom of the groove 19 is formed on the opposite surface of the concave hole 17b, and an air cylinder 2 is mounted on the top surface of the support body 17c.
0 is fixed, and its rod 20a extends toward the groove 19 side.

In addition, a middle mold 21.22 which is divided into two parts is provided in the concave t119 of the movable mold 17 so as to be able to move forward and backward.The rod 20a of the air cylinder 20 is fixed to one end of the one middle mold 21, and the rod 20a of the air cylinder 20 is fixed to the other end. An A-circular molding surface 21a corresponding to the molding surface 15b of the fixed mold 15 is formed at the upper corner. One end of the other medium mold 22 is connected to the convex portion 15d of the fixed mold 15.
An inclined surface 22b is formed so as to come into contact with the inside of the mold, and a molding surface 22a corresponding to the molding surface 15b of the fixed mold 15 and the molding surface 21a of one of the middle molds 21 is formed at the upper corner of the other end.
is formed. Further, an inclined groove 22c is formed in the middle of the other middle mold 22, into which the inclined bottle 15e of the fixed mold 15 is inserted.

Furthermore, the height of the rain molds 21 and 22 is the same as the depth of the groove 19 formed in the movable mold 17, and one of the medium molds 21 has a height when the air cylinder 20 is activated and the rod 20a is extended. , moves forward in the direction of the other medium mold 22 and fixes the fixed mold 15.
The molding surface 15b of the movable mold 17 and the molding surface 22a of the other middle mold 22 form a molding space, and when the movable mold 17 is closed to the fixed mold 15, the other middle mold 22 forms a molding space. , tilt bin 15. With the inclination angle of e, the molding surface 15 of the fixed mold 15, the molding surface 17 of the movable mold 17, and the molding surface 21a of the molding mold 21 form a molding space. It has become.

In the molding apparatus configured as described above, the movable mold 17
When molding a molded product by setting the core W on the molding surface of
0a is reduced and one of the middle molds 21 is moved back. Then, the other middle mold 22 retreats toward the recessed hole 17b of the movable mold 17 by opening both molds 15 and 17.

Next, a core mounting machine 9 (not shown since it is the same as the first embodiment) grips the core W and advances it onto the projection surface of the molding surface of the movable mold 17, and the core mounting machine 9 is lowered toward the movable mold 17.

At that time, the tip 11b of the gripping member 11 of the core mounting machine 9 is
The middle mold 21 disposed on the molding surface side of the movable mold 3 is accommodated in the groove 19 created by retreating, and the gripping member 11
The core W is set at a predetermined position between the tip 11b of the movable mold 17 and the molding surface of the movable mold 17.

Then, when the core W is set at a predetermined position on the molding surface of the movable mold 17 and fixed on the baseboard surface (not shown) of the movable mold 17, the core W is held in place by the gripping member 11 of the core mounting machine 9. The holding state of W is released, and the core mounting machine 9 is moved back from above the projection plane of the molding surface of the movable mold 17 and stopped at the original position.

Next, operate the air cylinder 20 in the opposite direction to
0a is extended, one of the middle molds 21 is advanced in the direction of the core W, and stopped at a position where the molding surface of the movable mold 17 and the molding surface 21a of the middle mold 21 are flush with each other.

In this state, the movable mold 17 is moved toward the fixed mold 15. At that time, the inclined bin 15 formed on the fixed mold 15
e moves the other middle mold 22 toward the one middle mold 21 while closing the mold. Then, at the same time as the mold closing of both molds 15 and 17 is completed, the other middle mold 22 also stops at a predetermined position, and the molding surface of the core W and the movable mold, the core W and the rain mold 21.
22 and the molding surface 15b of the core W and fixed mold 15
A molding space is formed by this.

Then, a molded product (not shown) in which the molding space is filled with a molding material such as plastic, solidified, and the core W is cast.
to form. Thereafter, the movable mold 17 is opened from the fixed mold 15 to release the molded part, and the air cylinder 20
is activated to contract the rod 20a and move one of the middle molds 21 backward.

Further, the other middle mold 22 retreats toward the convex portion 15a of the fixed mold 15 at the same time as the movable mold 17 is opened. And Nakako W
The molded product in which it has been cast is taken out from the molding surface, and the core W is taken out from the molded product by an appropriate method to obtain a hollow molded product.

〔Effect of the invention〕

As explained above, in the molding apparatus according to the present invention, a groove is formed in the molding surface of the movable mold, and the middle mold is provided in the groove so as to be able to move forward and backward, so that the core can be set on the molding surface of the mold. In this case, since the tips of the fingers of the core mounting machine can be accommodated in the grooves, it is possible to set the core at a predetermined position on the molding surface of the mold.

In addition, in the present invention, since a concave groove is formed on the molding surface of the movable mold to accommodate the tip of the finger of the core mounting machine, it can be applied to any core shape.
This has the effect of making the molding apparatus extremely versatile.

Furthermore, the present invention has the effect of increasing the degree of freedom of mechanization using robots and the like, and making it possible to realize unmanned core mounting work and molding work.

[Brief explanation of drawings]

FIG. 1 is a sectional view illustrating a first embodiment of a molding apparatus according to the present invention. 2 is a plan view of the movable mold section in the molding apparatus of FIG. 1. FIG. FIG. 3 is a front view taken along the line ■--■ in FIG. 2. FIG. 4 is a side view as seen from direction A in FIG. 3. FIG. 5 is a sectional view illustrating a second embodiment of the molding apparatus according to the present invention. FIG. 6 is a sectional view of a movable mold section in a conventional molding device. 1-111...Fixed mold 1b--Molding surface 3--Movable mold 3b--Molding surface 5--Concave groove 6--Medium mold 6b...
---One molding surface 7.8--Air cylinder 7a
, 8 a ------1 rod 9---m-core mounting machine 10-----1 main body 1l----
One gripping member 11 a ----- One gripping groove 1 l
b --Junjin from the tip Toyota Motor Corporation Fig. 1 Fig. 2 D Fig. 3 Fig. 4

Claims (1)

[Claims] A movable mold is arranged to be openable and closable so that the molding surface faces the molding surface of the fixed mold, and a groove is formed in the molding surface of the movable mold, and a medium mold forming part of the mold is formed in the groove. A core is provided to be movable forward and backward with respect to the concave groove, a molding surface corresponding to the molding surface of the fixed mold is formed on the intermediate mold, and a core is set in the molding surface of the movable mold near the movable mold. A molding device characterized in that a mounting machine is provided so that it can move forward and backward with respect to a movable mold.