JPH0911283A - Cassette type injection-molding mold device - Google Patents

Abstract

PURPOSE: To facilitate exchange of only split mold blocks when cavities are to be changed so as to mold various kinds of products by pulling out the split mold blocks to which split cassettes are attached detachably. CONSTITUTION: A matrix is formed of a movable unit 1 and a fixed unit 2 which are separable from each other, wherein a movable cassette 3 which can be attached to the movable unit 1 detachably and a fixed cassette 4 which dam be attached to the fixed unit 2 detachably are provided. Between the movable unit 1 or the fixed unit 2, split mold blocks 17 and 18 which open and close separably in the direction rectangular to the separating direction of the matrix are arranged. To the split mold blocks 17 and 18, split cassettes having cavities 13 and 14 are attached detachably.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette type injection molding die apparatus comprising a mother die attached to an injection molding machine and a cassette attached to the mother die to form a cavity for molding a product.

[0002]

2. Description of the Related Art A conventional example will be described with reference to FIGS. 7, 8 and 9. FIG. As a basic configuration, a mother die is composed of a movable side unit 101 and a fixed side unit 102, and an insertion hole for detachably fixing a movable side cassette and a fixed side cassette, which will be described later, to each unit. 103 and 104
Are formed. On the other hand, the insertion holes 103, 1 of the mother die
The cassette detachably fixed to 04 is composed of a movable side cassette 105 and a fixed side cassette 106, each of which is fixed to each unit. Reference numeral 107 denotes a fixing means for detachably fixing the movable cassette 105 to the movable unit 101, and 108
Reference numeral 109 is a fixing means for detachably fixing the fixed side cassette 106 to the fixed side unit 102.

A pair of split mold blocks 110 and 111, each having a cavity in which a molded product is formed, are openably and closably arranged at one end of the stationary cassette 106. On the other hand, four angular pins 112 that are fitted into the split mold blocks 110 and 111 to open and close are fixed to one end surface of the movable side cassette 105. Reference numeral 113 is a hole formed in the split mold blocks 110 and 111 into which the angular pin 112 is inserted.

[0004]

However, in the above prior art, since the split mold block having the cavity is arranged in the movable side cassette, even when only the cavity is desired to be replaced, the entire movable side cassette is required. Had to replace. In addition, since the split block, which is the split mechanism, is arranged inside the movable cassette, the size of the molded product is limited, and the expansion stroke of the split block is also limited. Met. Therefore, the products that can be molded are limited.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and a mother die attached to an injection molding machine and a cassette attached to the mother die to form a cavity for molding a product. In a cassette-type injection molding die apparatus comprising: a movable-side cassette in which the mother die is composed of a movable-side unit and a fixed-side unit that can be brought into contact with and separated from each other, and the cassette is detachably attached to the movable-side unit. And a fixed-side cassette detachably attached to the fixed-side unit, and is opened / closed between the movable-side unit and the fixed-side unit so as to be separable in a direction perpendicular to the separating / connecting direction of the mother die. A split block is arranged, and a split cassette having a cavity is detachably attached to the split block.

[0006]

1 to 6 show a cassette type injection molding die apparatus of the present invention. This mold device basically comprises a movable unit 1 and a fixed unit 2 which form a mother die, a movable cassette 3 and a fixed cassette 4 which are detachably attached to each of them, and the movable unit. It is composed of a pair of opposing split mold blocks 17 and 18 arranged on the side surface of one fixed-side unit 2. The movable unit 1 includes a base plate 6 fixed to an injection molding machine (not shown), a water plate 7 for flowing water for cooling the molded product, and a fixed plate 8 for fixing the movable cassette 3.
In addition, the split mold blocks 17 and 18 are constituted by a sliding plate 9 and the like. The temperature control block 10 of the movable side cassette 3 is fitted into the water channel plate 7 fixed to the base plate 6, and the temperature control block 10 is inserted.
A temperature control plate 11 is fixed to the center of the. Also,
A flow passage 12 for cooling water or the like is formed in the water passage plate 7, and the water flowing in from the flow passage 12 circulates around the temperature control plate 11.

Split mold cassettes 15 and 16 having cavities 13 and 14 formed on one end surface of the sliding plate 9 are also provided.
Split mold blocks 17 and 18, which are detachably fixed, are arranged so as to be slidable in a direction perpendicular to the separation / contact direction of the movable unit 1 and the fixed unit 2. The sliding mechanism will be described in detail. On one end surface of the sliding plate 9, a sliding groove 9a is formed in a direction perpendicular to the separating / contacting direction of the movable unit 1 and the fixed unit 2, and the sliding groove 9a is formed. An L-shaped member 19 for preventing the falling is fixed to the. On the other hand, a bracket 20 fitted into the sliding groove 9a is fixed to the split blocks 17 and 18. The sliding groove 9a
Are formed up to the end of the sliding plate 9. The main body portion 21 of the movable side cassette 3 is fitted and inserted over the fixed plate 8 and the sliding plate 9, and each plate 8, 9 is attached.
It is removably fixed by fixing means 22 and 23 attached to the. Further, the core pin 24 is provided on the main body portion 21.
Is fixed in a protruding state, and the temperature control plate 11 is loosely inserted in the core pin 24 thereof. Numerals 25 and 26 are O-rings for preventing the water flowing from the flow passage 12 from leaking from the fitting surface and the mating surface.

On the other hand, the fixed unit 2 fixes a base plate 27 fixed to an injection molding machine (not shown), a stripper plate 29 for separating a runner from a runner holding pin 28, and a fixed cassette 4. It is composed of a fixed plate 30 and the like. Further, 30a is attached to the fixed plate 30, and the split block 1
Angular pin for opening and closing 7,18. A gate member 33 in which a gate hole 32 is formed is fitted in the main body portion 31 of the fixed side cassette 4, and a gate port member 34 is also fixed in a protruding state. The gate port member 34 projects into the cavities 13 and 14, and also functions as a core pin for molding a molded product. Of course, this fixed-side cassette 4 is also fixed plate 30
It is detachable by the fixing means 35 attached to the.

Next, the fixing means 22, 23 and 35 for detachably fixing the movable side cassette 3 and the fixed side cassette 4 will be described. Since both have the same structure, the fixing means 23 will be described as a representative example. A U-shaped bracket 36 is fixed to the side surface of the sliding plate 9, and the bracket 36 has an L-shape via a link mechanism 37.
A mold handle 38 is rotatably mounted. One of the L-shaped handles 38 serves as a grip 38a, and the lifting shaft 39 is rotatably fixed to the other 38b. A plate 40 is fixed to the lower end of the lifting shaft 39, and lock pins 41 are fixed near both ends of the plate 40. The lock pin 41 moves up and down and engages with and disengages from the engaging groove 3a of the movable cassette 3 so that it can be attached and detached.

Next, the method of use will be described. First, the movable unit 1 and the fixed unit 2 are opened with the mother die attached to the molding machine, and the fixing means 22, 23,
Rotate the handle of 35 to the right and raise the lock pin. Here, the movable side cassette 3 and the fixed side cassette 4 are respectively inserted. Next, the fixing means 22, 23, 3
Rotate the handle of 5 to the left and lower the lock pin. By the lowering of the lock pin, the lock pin is engaged and fixed in the engagement groove.

Further, the split mold blocks 17 and 18 are also pulled out from the sliding groove with the mother die attached to the molding machine. Then, the split mold cassettes 15 and 16 in which the cavities 13 and 14 are formed are attached in the removed state. With the above work, molding can be performed. That is, each cassette can be attached and detached with the mother die attached. The split block may be attached to the fixed unit.

[0012]

INDUSTRIAL APPLICABILITY The present invention provides a cassette type injection molding die device comprising a mother die attached to an injection molding machine and a cassette attached to the mother die to form a cavity for product molding. While the mother die is composed of a movable side unit and a fixed side unit that are separable from each other, a movable side cassette in which the cassette is detachably attached to the movable side unit, and a fixed side cassette that is detachably attached to the fixed side unit. A split mold block that opens and closes so as to be separable in the direction perpendicular to the separation direction of the mother die is disposed between the movable side unit and the fixed side unit, and the cavity is formed in the split mold block. Since the split cassette that has been formed is attached detachably, if you want to change the cavity, you only need to replace the split mold block. It is possible to form the wide variety of products in exchange for the block.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of one embodiment of the present invention.

FIG. 2 is a front sectional view of FIG. 1 during molding.

FIG. 3 is a side view of the gate member of FIG.

FIG. 4 is an exploded perspective view of the movable unit of FIG.

5 is a side view of the fixing means of FIG. 1 in an unlocked state.

FIG. 6 is a side view of FIG. 5 when locked.

FIG. 7 is an exploded perspective view of a conventional cassette-type injection molding die device.

8 is a perspective view of a movable side cassette used in FIG. 7. FIG.

9 is a perspective view of a fixed-side cassette used in FIG. 7. FIG.

[Explanation of symbols]

 1 movable side unit 2 fixed side unit 3 movable side cassette 4 fixed side cassette 9 sliding plate 9a sliding groove 13,14 cavity 15,16 split type cassette 17,18 split type block 22,23,35 fixing means 30 fixed Plate 30a Angular pin 31 Main body of fixed side cassette 32 Gate hole 33 Gate member 34 Gate opening member

Claims (1)

[Claims] 1. A cassette type injection molding die apparatus comprising a mother die attached to an injection molding machine and a cassette attached to the mother die to form a cavity for product molding. On the other hand, it is composed of a movable side unit and a fixed side unit which are separable from each other, while the cassette is composed of a movable side cassette detachably attached to the movable side unit and a fixed side cassette detachably attached to the fixed side unit. At the same time, a split mold block that opens and closes so as to be separable in a direction perpendicular to the separating direction of the master mold is arranged between the movable side unit or the fixed side unit, and a cavity is formed in the split mold block. A cassette type mold apparatus for injection molding, characterized in that a cassette is detachably attached.