JP2002052573A - Cassette type mold device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the cooling efficiency of a product, to secure an enough occupiable area for a product molding part, to curtail a product molding time, and to improve the freedom of design. SOLUTION: In a cassette type mold device 10, a round cavity insert cassette 28 having the product molding part 22 of a necessary shape is set attachably/ detachably in a cassette mold 21. The cavity insert cassette 28 is formed cylindrically from a material of high heat conductivity, and a ring-shaped cooling channel 29 through which cooling fluid such as water is passed from a product cooling channel 11 is formed in the circumferential direction on the peripheral surface of the cassette 28.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette-type mold apparatus for performing injection molding of a resin product such as a connector as a movable mold moves relative to a fixed mold of a cassette mold and a cassette holder mold. More specifically, the present invention relates to a structure of a cassette type mold apparatus for shortening a molding time of a product and improving a degree of freedom in design.

[0002]

2. Description of the Related Art A conventional cassette type mold apparatus 50 is shown in FIG.
As shown in (1), a cassette mold 51 having a product forming portion 51a of a required shape is detachably mounted on a cassette holder mold 52. Then, as the cassette mold 51 and the cassette holder mold 52 constituting the movable mold with respect to the fixed mold (not shown) move toward and away from the mold, molding and taking out of a resin product such as a connector (not shown) are performed. Do. The cassette mold 51 is prepared according to a connector or the like to be manufactured in a small quantity, and is appropriately replaced every time a connector or the like having a different shape and size is formed, and is mounted in the cassette holder mold 52. The cassette mold 51 is provided with a product cooling channel 53, and cools the product by circulating water or the like.

[0003]

However, the above-described conventional cassette-type mold apparatus 50 has a cassette mold 51.
When the cooling flow path 53 is increased, the occupied area of the product forming portion 51a in the cassette mold 51 is reduced,
There has been a problem that the degree of freedom in product design is reduced, such as restrictions on the size and shape of a moldable product. Conversely, the product forming section 5 in the cassette mold 51
If the occupied area of the la is large, the cooling channel 53 cannot be enriched, and the cooling efficiency of the product decreases, and the time required for molding increases.

According to the present invention, it is possible to improve the cooling efficiency of a product and secure a sufficient occupied area of a product forming portion.
An object of the present invention is to provide a cassette-type mold device capable of shortening the molding time of a product and improving the degree of freedom in design.

[0005]

SUMMARY OF THE INVENTION The object of the present invention is to provide a cassette mold having a product forming part of a required shape which is detachably mounted on a cassette holder mold, and wherein the cassette mold and the cassette holder mold are provided. In the cassette-type mold apparatus for performing the molding with the movement of the movable mold with respect to the fixed mold, at least one nesting cassette is detachably mounted on the cassette mold, and the nesting cassette includes The problem can be solved by a cassette-type mold apparatus characterized in that the product molding section and the cooling channel are formed.

The above object is also achieved in the cassette type mold apparatus, wherein the nesting cassette is preferably cylindrical and the cooling passage is formed on the outer peripheral surface of the nesting cassette along the circumferential direction. The problem can be solved by a cassette type mold apparatus characterized in that:

Further, the above problem can be solved by the cassette type mold apparatus, wherein the nested cassette is preferably made of a material having high thermal conductivity.

[0008] According to the cassette type mold apparatus having the above structure,
At least one nesting cassette is removably mounted on the cassette die, and the nesting cassette has a product molding portion and a cooling channel formed therein. This allows the desired nested cassette to be mounted on a common cassette mold,
By mounting the cassette mold on the cassette holder mold, the fixed mold and the movable mold of the mold apparatus can be easily assembled. In addition, the flow of the cooling fluid to the cooling flow path formed in the nested cassette allows the product molding portion formed in the nested cassette to be cooled with high efficiency. Therefore, by exchanging only the nested cassette, a common cassette mold can be used, and the versatility of the cassette mold and the weight reduction of the cassette mold and the nested cassette can be achieved. Therefore, it is possible to improve the cooling efficiency of the product, improve the degree of freedom in design by securing a sufficient area that can be occupied by the product molding section, and improve the productivity and the workability by shortening the molding time of the product.

Further, since the nesting cassette is cylindrical and the cooling passage is formed along the circumferential direction of the outer peripheral surface of the nesting cassette, the cooling fluid flows along the passage. As a result, the product molding portion of the nested cassette is efficiently cooled. Therefore, high cycle productivity can be improved.

Further, since the nesting cassette is made of a material having high thermal conductivity, the product forming portion of the nesting cassette is cooled more efficiently with the flow of the cooling fluid through the flow passage. Therefore, higher cycle productivity can be improved.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the cassette type mold apparatus according to the present invention will be described below in detail with reference to FIGS. FIG. 1 is a schematic side view showing an embodiment of a cassette type mold apparatus of the present invention, FIG. 2 is a schematic plan view showing a cassette mold and a cassette holder mold on the movable mold side in FIG. 1, and FIG. 2 shows the configuration of a round insert cassette in FIG.
4A is a plan view, FIG. 4B is a cross-sectional view, FIG. 4 shows another configuration of the round nesting cassette in FIG. 2, FIG. 4A is a plan view, and FIG.

As shown in FIGS. 1 to 3, a cassette type mold apparatus 10 of this embodiment is configured so that cassette molds 20, 21 are detachably mounted on cassette holder molds 30, 31. The direction in which the cassette dies 20, 21 are mounted on the cassette holder dies 30, 31 is perpendicular to the moving direction (the vertical direction in FIG. 1) of the movable die (the lower die in FIG. 1) (FIG. 1). 2 vertical direction). The cassette-type mold apparatus 10 is configured such that the cassette molds 20, 21 are mounted on the cassette holder molds 30, 31 while the cassette molds 20, 21 are mounted on the cassette molds 20, 21.
By moving the movable dies 21 and 31 toward and away from the fixed dies (the upper dies in FIG. 1) of the cassette holder dies 30 and 31, resin products such as connectors are injection-molded.

In the cassette dies 20, 21, a round insert cassette 28 having a product forming part 22 of a required shape is provided.
It is attached detachably (in the direction perpendicular to the plane of FIG. 2). The round insert cassette 28 is formed in a cylindrical shape from a material having high thermal conductivity such as an aluminum alloy and a copper alloy.
As shown in FIG. 3, on the outer peripheral surface of the round insert cassette 28,
A flow path 29 for a cooling fluid such as water (hereinafter, referred to as a cooling flow path 29) is formed in an annular shape along the circumferential direction substantially at the center in the vertical direction in FIG. In this cooling channel 29,
As shown in FIG. 2, a product cooling flow path 11 for supplying a cooling fluid from the cassette holder mold 31 via the cassette mold 21 and circulating the fluid as indicated by an arrow in the figure is connected. In addition, a pair of O-rings 2 are provided at the upper and lower portions of the cooling passage 29 on the outer peripheral surface of the round insert cassette 28 in FIG.
8a are provided. Each O-ring 28a functions as a sealing material for the cooling channel 29.

For example, if the round insert cassette 28 is
A plurality of molded products may be attached to the set of cassette dies 20 and 21 so that a plurality of molded products can be taken out from the set of cassette dies 20 and 21. Further, for example, in addition to the round nesting cassette 28 shown in FIG.
By mounting two pieces each, one molded article having two different shapes and sizes can be taken out from one set of cassette dies 20 and 21. The round insert cassette 4
In the case of No. 0, the shape and size of the product forming section 22 are different from those of the round insert cassette 28, and the portion 40a forming the product forming section 22 is formed by a different member from the other portion 40b.

The cassette die 21 is provided with a slide core 23 and a product pushing section 24 as shown in FIG. The slide core 23 is for forming an undercut portion in the product, and is used for the cassette mold 21.
1 can be slid on the upper surface in FIG. Further, the product pushing section 24 is arranged at the lower part in FIG. 1 of the cassette mold 21 on the movable mold side, and causes the product pushing pin 25 to protrude upward in FIG. Then, the product is pushed out from the product forming section 22 of the round insert cassette 28 to the outside.

A core drive cylinder 32 is provided in the cassette holder mold 31 on the movable mold side.
The core drive cylinder 32 includes a connecting rod 27 fixed to an end of the slide core 23 via a connecting mechanism 34 by connecting the cylinder rod 33 with the cassette holder 21 to the cassette holder mold 31. The slide core 23 is slid in the left and right directions in the figure by being connected and moving the cylinder rod 33.

The coupling mechanism 34 includes a concave portion 33a and a convex portion 33b formed at the tip (left end in FIG. 2) of the cylinder rod 33 of the core drive cylinder 32,
3 comprises a concave portion 27a and a convex portion 27b formed at the tip (right end in FIG. 2) of the connecting rod 27. This coupling mechanism 34
The concave portions 27a and 33a are fitted so that the convex portions 27b and 33b mesh with each other as the cassette mold 21 is mounted on the cassette holder mold 31 in the upward direction in FIG. Thereby, the connecting mechanism 34 connects the core drive cylinder 32 and the slide core 23 in a state where the cassette mold 21 is completely mounted on the cassette holder mold 31 (a state shown in FIG. 2).

Also, the cassette holder mold 3 on the fixed mold side
A sprue 35 is provided at 0 to fill the product molding portion 22 of the cassette mold 21 with a resin material for product molding.
The position of the sprue 35 in the cassette holder mold 30 is on the opposite side (left side in FIG. 2) of the core drive cylinder 32 across the product forming portion 22 of the cassette mold 21, and the axis of the cylinder rod 33 of the core drive cylinder 32 is They are arranged on a line.

Next, the cassette type mold apparatus 1 of the present embodiment will be described.
The operation of 0 will be described. Cassette type mold device 10
In a state where the cassette mold 21 in which the round insert cassette 28 is detachably mounted is mounted on the cassette holder mold 31 along the upward direction in FIG. 2, the cassette mold 21 and the cassette holder which are movable molds are mounted. The mold 31 is moved upward in FIG. 1 and is brought close to predetermined positions of the cassette mold 20 and the cassette holder mold 30 on the fixed mold side. In this state, as shown in FIG.
5 and the resin material is filled into the product forming part 22 in the round insert cassette 28 via the runner 36. As a result, a product is formed in the product forming section 22, and an undercut portion of the product is formed by the slide core 23.

Then, the cassette type mold apparatus 10 is arranged such that the cooling fluid flows from the product cooling channel 11 to the cooling channel 29 of the round nesting cassette 28, whereby the round nesting cassette 2 is
8 is efficiently cooled. Then, the cassette mold 21 and the cassette holder mold 3 on the movable mold side
1 is moved downward in FIG. 1 again, and is separated from the cassette mold 20 and the cassette holder mold 30 on the fixed mold side.
Then, by operating the product pushing section 24,
The product is taken out from the product forming section 22 of the round insert cassette 28. Thereafter, the same steps as described above are repeated to mold the resin product.

Therefore, in the cassette type mold apparatus 10, for example, when products having different shapes and sizes are formed, it is possible to cope with the case by exchanging only the round insert cassette 28 without exchanging the cassette molds 20, 21. It is. That is, by exchanging with the round insert cassette 28 having the product forming part 22 of the shape and size corresponding to the product, it is not necessary to exchange the cassette dies 20, 21 and the exchanging operation can be easily performed in a short time.

As described above, according to the cassette type mold apparatus 10 of the above embodiment, the cassette molds 20 and 21 include:
A round nesting cassette 28 made of a material having high thermal conductivity and formed in a cylindrical shape is detachably mounted, and an annular cooling passage 29 is formed on the outer peripheral surface of the round nesting cassette 28 along the circumferential direction. Is formed. Therefore, the round nesting cassette 2
8 can be uniformly and highly efficiently cooled, so that the cooling efficiency of the product can be improved, and the occupied area of the product forming section 22 is sufficiently ensured. be able to. Therefore, the time required for molding can be reduced, and the size, shape, and the like of a moldable product can be prevented from being restricted, and the degree of freedom in product design can be improved.

Further, since the product forming section 22 is provided in the round nesting cassette 28, a product having a desired shape can be formed by changing only the round nesting cassette 28 even for products having different sizes and shapes. The cassette mold 21 can be shared. Furthermore, by only replacing the round nesting cassette 28 which can be formed lightweight and small,
The labor and time required for replacement can be reduced, and it is possible to efficiently cope with the molding of different products.

[0024]

As described above, according to the cassette-type mold apparatus of the present invention, at least one nesting cassette is detachably mounted on the cassette mold, and the nesting cassette has a product molding section and a cooling unit. The use channel is formed. Thus, the desired nested cassette is mounted on the common cassette die, and then the cassette die is mounted on the cassette holder die, thereby facilitating the assembly of the fixed die and the movable die of the die apparatus. It can be carried out. In addition, the flow of the cooling fluid to the cooling flow path formed in the nested cassette allows the product molding portion formed in the nested cassette to be cooled with high efficiency. Therefore, by exchanging only the nested cassette, a common cassette mold can be used, and the versatility of the cassette mold and the weight reduction of the cassette mold and the nested cassette can be achieved. Therefore, it is possible to improve the cooling efficiency of the product, improve the degree of freedom in design by securing a sufficient area that can be occupied by the product molding section, and improve the productivity and the workability by shortening the molding time of the product.

In the cassette type mold apparatus,
Since the nesting cassette is cylindrical and the cooling channel is formed along the circumferential direction of the outer peripheral surface of the nesting cassette, the cooling fluid flows through the channel, The product forming part is cooled efficiently. Therefore, high cycle productivity can be improved.

Further, in the cassette type mold apparatus,
Since the nesting cassette is made of a material having high thermal conductivity, the product forming portion of the nesting cassette is cooled more efficiently with the flow of the cooling fluid through the flow path. Therefore, higher cycle productivity can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing an embodiment of a cassette type mold apparatus of the present invention.

FIG. 2 is a schematic plan view showing a cassette mold and a cassette holder mold on a movable mold side of the cassette mold apparatus in FIG. 1;

FIG. 3 shows a configuration of a round nesting cassette in FIG. 2,
(a) is a plan view, and (b) is a cross-sectional view.

4A and 4B show another configuration of the round insert cassette in FIG. 2, wherein FIG. 4A is a plan view and FIG.

FIG. 5 is a schematic plan view showing a cassette mold and a cassette holder mold on a movable mold side of a conventional cassette mold apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Cassette type mold apparatus 20 Cassette mold (fixed mold) 21 Cassette mold (movable mold) 22 Product molding part 23 Slide core 24 Product extrusion part 28 Round nested cassette (nested cassette) 29 Cooling flow path 29a O Ring 30 Cassette holder mold (fixed mold) 31 Cassette holder mold (movable mold)

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshinori Yamanashi 206-1 Nunobikihara, Haibara-cho, Haibara-gun, Shizuoka Yazaki Parts Co., Ltd. Parts Co., Ltd. (72) Inventor Toru Yagi 206-1, Nunobikihara, Haibara-cho, Haibara-gun, Shizuoka Prefecture Yazaki Parts Co., Ltd. F-term (reference) 4F202 AH34 AJ12 CA11 CB01 CK06 CK42 CN05 CN22

Claims (3)

[Claims] 1. A cassette die having a product forming part of a required shape is detachably mounted on a cassette holder die, and a movable die moves with respect to the cassette die and a fixed die of the cassette holder die. In the cassette-type mold apparatus for performing mold molding by means of at least one of the cassette molds, at least one nesting cassette is detachably mounted, and the nesting cassette is formed with the product molding section and the cooling channel. A cassette-type mold device, comprising: 2. The cassette-type metal mold according to claim 1, wherein said nesting cassette has a cylindrical shape, and said cooling passage is formed on a peripheral surface of said nesting cassette along a circumferential direction. Mold device. 3. The cassette type mold apparatus according to claim 1, wherein said nesting cassette is made of a material having high thermal conductivity.