JPH0531776A - Partition means for cool-heating tank of mold - Google Patents

Abstract

PURPOSE:To facilitate the fabrication of a mold having a cool-heating tank for circulating a fluid of cooling water or the like in the interior of the mold. CONSTITUTION:The partition means is designed having an annular stationary part 11 with an equal diameter to the width of a partition board 17 and with a plane partition board 17 normal to the stationary board 11, and a flange 15 is provided on the periphery of the annular stationary part 11, and thus the partition board 10 is intended to be fixed such that the flange 15 is held on the mating surface of the mold parts, as a result, the insertion of the partition means 10 into the mold is facilitated and, by taking advantage of the wall thickness of the flange 15, a water-proof ring 75 can be arranged on the outer periphery of the flange 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention controls the temperature of a mold used for injection molding, extrusion molding, etc., and therefore, by forming convection of a fluid formed inside the mold, When a tank part that exchanges heat with the fluid is formed,
The present invention relates to a partitioning tool for a cooling / heating tank section that is inserted and fixed in the tank section.

[0002]

2. Description of the Related Art In a molding die for injection molding or the like, the temperature of the die is adjusted in the die because a high temperature molten resin or the like is filled and cooled repeatedly. Therefore, in many cases, a pipe for flowing a fluid such as water or oil for cooling or heat retention and a tank portion for effectively exchanging heat with the mold by convection of the fluid are arranged.

The piping for cooling and the tank portion are arranged in a movable mold or a fixed mold while avoiding the extrusion pins and the bolt holes, and are not shown, for example, as shown in FIG. A fixed die 43 bolted to the fixed die mounting plate 41 by bolts, a movable die 56 and a movable insert piece 58 bolted to the movable die mounting plate 51 via a spacer 53.
In the mold in which the product space 49 is formed between the movable mold and the movable mold, the cavity 62 provided inside the movable insert piece 58 and the cavity 63 provided inside the movable mold 56 are formed. The tank portion 61 is formed as a continuous cylindrical shape, and a plurality of tank portions 61 extending from the inside of the movable insert piece 58 to the inside of the movable die 56 are provided in the movable mold as described above, and the tank portions 61 are mutually connected. The tank portion 61 and the outside of the movable mold are appropriately connected by a cooling water pipe 67, and a partition plate 65 is arranged inside each tank portion 61 to arrange the tank portion 61.
The cooling water is diverted to flow all over the inside.

Further, as shown in FIGS. 9 and 10, the tank is formed on the surface of the movable die 56 at the mating surface of the movable die 56, which is a die part forming the movable die, and the movable insert piece 58. An annular groove portion 71 is formed so as to surround a cavity 63 forming the portion 61, and a waterproof ring 75 is inserted into the annular groove portion 71 so that the cooling water in the tank portion 61 is a movable mold 56 that is a mold component. It is designed to prevent leakage from the mating surface of the movable insert piece 58 into the mold or the like.
Cooling water is sent from the pipe 67 to the tank portion 61 in which the waterproof ring 75 is arranged on the mating surface of the mold parts so as to surround the periphery of the tank portion 61, and the water in the tank portion 61 is moved inside the tank portion 61 by the partition plate 65. The molten resin or the like injected from the sprue-45 is filled into the product space 49 while flowing around to cool the mold, and the molten resin is cooled and solidified according to the shape of the product space 49, and then moved. Mold 56 and movable insert piece 5
The movable mold formed by 8 is retracted together with the movable mold mounting plate 51 to open the mold, and the resin product molded by the extrusion pin 47 penetrating the movable mold 56 and the movable insertion piece 58 is molded into the movable mold. It is being taken out as if sticking out from it.

It should be noted that the pipe 67 and the tank portion 61 often circulate cooling water during continuous molding, and circulate hot water during molding of minute products to adjust the temperature of the mold. In addition, at the start of injection molding, hot water may be circulated for preheating to be used for heating the mold. In addition to water, oil may be used as the liquid used for cooling or heating. is there.

The annular groove 71 is formed not only on the movable die 56 but also on the mating surface of the movable insert piece 58 with the movable die 56. Further, when the waterproof ring 75 is inserted between the movable insert piece 58 and the movable die 56, instead of forming the annular groove portion 71 on the mating surface of the movable die 56 or the movable insert piece 58, for example, as shown in FIG. In addition, a step portion 73 is formed on the periphery of the cooling tank cavity 62 of the movable insert piece 58, or the cavity 6 provided in the movable die 56.
There is also a mold in which a step 73 is formed on the peripheral edge of 3 and a waterproof ring 75 is inserted into the step 73.

Further, the tank portion 61 is formed by a movable die 56.
Not only in the case of forming the movable mold by the movable insert piece 58 and the movable insert piece 58, but depending on the shape of the product part space, the tank part is formed in an appropriate mold part such as a fixed mold or a core. .

[0008]

Conventionally, the partition plate provided in the cooling / heating tank portion is firmly fitted into the cooling / heating tank portion so as not to swing due to the water flow in the cooling / heating tank portion, and therefore its shape is formed. Despite being a simple flat plate, it is regulated to a width that matches the shape of the cooling and heating tank part, and is forcibly inserted into the cavity of the movable mold or the cavity of the movable insert piece. There is a drawback that the assembly is complicated and the assembly of the mold is troublesome.

Further, forming an annular groove on the mating surface between the movable mold and the movable insert piece, which are mold parts, has the drawback of complicating the machining of the mold parts and increasing the manufacturing cost of the mold as a whole. It was Further, by using a mold part in which the step portion for inserting the waterproof ring is formed in the movable mold or the movable insert piece, it is easier to form the insertion portion of the waterproof ring as compared with the formation of the annular groove portion. Although it is easy to manufacture mold parts, when assembling the mold, the waterproof ring may shift from the required position, and if there is a deviation, the waterproof effect will not be exerted, and the mold will not be displaced. Since it is necessary to assemble the mold, there is a drawback that the mold assembly requires attention and labor.

[0010]

SUMMARY OF THE INVENTION According to the present invention, a flat plate-shaped partition plate portion is formed orthogonal to the annular fixed portion with respect to an annular fixed portion having a diameter substantially equal to the width of the partition plate portion. On the outer circumference of the part, an annular collar part is formed which is sandwiched between the mating surfaces of the mold parts. Further, a partitioning tool composed of an annular fixing portion and a partition plate portion orthogonal to the annular fixing portion may be provided with a flat plate-shaped auxiliary plate portion orthogonal to the partition plate portion so as to be orthogonal to the annular fixing portion. A plate-shaped protruding portion may be formed on the side surface of the partition plate portion or the auxiliary plate portion.

[0011]

[Operation] According to the present invention, a collar portion formed of an annular fixing portion and a flat plate-like partition plate portion, and a collar portion formed on the outer periphery of the annular fixing portion is sandwiched between the mating surfaces of the mold components, and therefore cooling is performed. Fixing in the heating tank becomes easy. Further, by providing an auxiliary plate portion orthogonal to the partition plate portion and the annular fixing portion, it is possible to prevent the partition plate portion from significantly swinging in the cooling and heating tank portion, and to partition the plate-like protruding portion. When it is provided on the plate part or the auxiliary plate part, it becomes possible to stir the water flow in the cooling / heating tank part.

[0012]

EXAMPLE A partitioning tool according to the present invention is used by inserting it into a cooling and heating tank portion of a mold, and a first embodiment of the partitioning tool is as shown in FIGS. 1 and 2. Annular wall 13
An annular fixing portion 11 having a flange portion 15 on the outside of the periphery of the ring, and a partition plate portion formed through the annular fixing portion 11 in the direction of the central axis of the annular fixing portion 11 into a flat plate shape and a rectangular shape. A partitioning member 10 made of synthetic resin, which is integrally formed with a movable insertion piece 5 and has an outer periphery of an annular wall portion 13.
8 is formed slightly smaller than the inner diameter of the cavity 62 for the cooling and heating tank portion 61, and the width of the partition plate portion 17 is also slightly smaller than the inner diameter of the cooling and heating tank portion 61. At the same time, the thickness of the flange portion 15 is formed to be substantially equal to the thickness of the stepped portion 73 formed on the movable insert piece 58.

Therefore, when the partitioning tool 10 is inserted into the cooling / heating tank portion 61, as shown in FIG.
The lower end 18 of the partition plate portion 17 of the partitioning tool 10 is brought close to the bottom portion 68 of the cavity 63 provided to form the cooling / heating tank portion 61, and the collar portion 15 is moved to the movable insertion piece 58 and the movable die 56. The cooling water flowing from the pipe 67 into the cooling / heating tank portion 61 extends in the central axis direction of the annular fixing portion 11 so as to be orthogonal to the annular fixing portion 11 in the cooling / heating tank portion 61. After making a detour so as to pass through the upper end 19 of the partition plate portion 17 that has been installed, it is possible to effectively cool the mold by allowing it to flow out from another cooling water pipe 67 '. At the time of assembling into the mold, the annular wall portion 13 was inserted into the cavity 62 formed in the movable insertion piece 58 and serving as the cooling and heating tank portion 61, whereby the flange portion 15 was formed in the movable insertion piece 58. Located on step 73 Then, a space portion is formed on the outer periphery of the collar portion 15 at the stepped portion 73, and the waterproof ring 75 is positioned so as to be fitted to the outer periphery of the collar portion 15 of the partitioning tool 10 and the waterproof ring 75 is formed on the movable insert piece 58. It can be inserted into the stepped portion 73.

Thus, the collar portion 1 of the partitioning tool 10
5 is positioned on the stepped portion 73 formed on the movable insert piece 58, and the waterproof ring 75 is inserted into the space formed around the collar portion 15 to bolt the movable insert piece 58 and the movable die 56 together. For example, the waterproof ring 75 is the collar portion 1 of the partitioning tool 10.
Since it is secured at a predetermined position by means of 5, it is possible to easily assemble the mold without causing the displacement of the waterproof ring 75, and the stepped portion 73 formed on the movable insert piece 58.
Since it can be easily formed by spot facing, manufacturing of the movable insert piece 58, which is a mold component, becomes easy.

In the above-described embodiment, the partition plate portion 17 is provided as the partitioning tool 10 which is adapted to the tank shape in which the cooling / heating tank portion 61 is formed so as to extend from the inside of the movable insert piece 58 to the inside of the movable die 56. Is formed so as to penetrate the annular fixing portion 11 so as to be orthogonal to the annular fixing portion 11, but as shown in FIG. 4, the cooling and heating tank portion 61 is formed in the movable insertion piece 58, and Piping for water 6
Partitioning tool 1 used when 7 is formed so as to penetrate the mating surface of the movable die 56 with the movable insert piece 58.
In the embodiment of No. 0, the lower end 18 of the partition plate portion 17 is fixed to the annular fixing portion 11 according to the shape of the cooling / heating tank portion 61.
It may be formed so as to be fitted to the lower end of the annular wall portion 13. As shown in FIG. 5, the flange portion 15 is formed at the upper end of the annular wall portion 13, and the flange portion 15 is formed on the movable die 56. After inserting the partitioning tool 10 into the movable mold 56 so as to be inserted into
In some cases, the waterproof ring 75 may be inserted so as to be located on the outer periphery of the collar portion 15, and then the movable insert piece 58 may be attached to the movable die 56.

Further, as another embodiment of the present invention, as shown in FIGS. 6 and 7, there is one in which a flat plate-like auxiliary plate portion 21 orthogonal to the partition plate portion 17 is formed. This auxiliary plate 21
6, for example, as shown in FIG. 6, the partition plate portion 17 as well as the auxiliary plate portion 21 penetrate the annular fixing portion 11, and the lower end 23 of the auxiliary plate portion 21 is located higher than the lower end 18 of the partition plate portion 17. 7 and the upper end surface 19 of the partition plate portion 17 from the upper end surface 14 of the annular wall portion 13 as shown in FIG.
The partition plate portion 17 is provided in this manner.
The lower end 23 of the auxiliary plate portion 21 is formed to be higher than the lower end 18 of the auxiliary plate portion 21, and the width of the auxiliary plate portion 21 is substantially the same as the inner diameter of the cooling / heating tank portion 61, like the partition plate portion 17. The cooling / heating tank portion 61 is formed to have a length slightly smaller than the inner diameter thereof.

The lower end 23 of the auxiliary plate portion 21 may be at the same height as the lower end 18 of the partition plate portion 17. In this case, if the auxiliary plate portion 21 is provided with a through hole, the auxiliary plate portion 21 may be formed. It is not necessary to properly position the portion 21 on the pipe 67 and divide the cooling water or the like from the pipe 67 to the left and right of the auxiliary plate portion 21. In this way, the partitioning tool 10 provided with the auxiliary plate portion 21 that is orthogonal to the partition plate portion 17 and has a width of a length substantially equal to the inner diameter of the cooling and heating tank portion 61 is the cooling and heating tank portion 61 of the mold. When it is inserted and installed in the inside, not only is the collar part 15 clamped from above and below by the movable insert piece 58 and the movable die 56, which are mold parts, and the partitioning tool 10 is fixed in the cooling and heating tank part 61. The both end portions of the partition plate portion 17 and the both end portions of the auxiliary plate portion 21 come into contact with the inner wall of the cooling / heating tank portion 61, so that the partition plate portion 17 is protected against a flow of cooling water or the like.
Can be prevented from swinging, and the partitioning tool 10 can be securely fixed in the cooling / heating tank portion 61.

When the auxiliary plate portion 21 is provided so as to be orthogonal to the partition plate portion 17, as another embodiment, as shown in FIG. 8, a plate-like protruding portion such as a rib is formed substantially parallel to the annular fixing portion 11. 25 may be formed. The partitioning tool 10 provided with such a plate-like projecting portion 25 reinforces the attachment of the auxiliary plate portion 21 and stirs the water flow when the cooling water or the like flows into the cooling / heating tank portion 61, so that the mold The efficiency of temperature adjustment such as cooling can be improved.

Further, the shape of the protruding portion 25 is such that the annular fixing portion 1
It is not limited to the case of being parallel to 1, and is formed on the side surface of the auxiliary plate portion 21 or the partition plate portion 17 with an appropriate inclination, and
It is also possible to change the size and shape of the projecting portion 25 in accordance with the size of the cooling / heating tank portion 61 and thus the size of the partitioning tool 10 such as the partition plate portion 17 to further enhance the stirring effect.

Then, a groove is formed on the outer periphery of the collar portion 15 of the annular fixing portion 11, and the collar portion 1 of the partition tool 10 is previously formed.
If the waterproof ring 75 can be fitted and fixed to 5,
When the mold is assembled by incorporating the partitioning tool 10 and the waterproof ring 75, the assembly work can be further facilitated. In the above embodiment, the partition tool 10 is inserted into the cooling and heating tank portion 61 formed inside the mold parts of the movable insert piece 58 and the movable mold 56, but this embodiment is also explained. As described above, the fixed mold 43 is composed of appropriate mold parts, and is not only used for the cooling and heating tank portion 61 in the movable mold composed of the movable insert piece 58 and the movable mold 56. It is also possible to insert and use the partitioning tool 10 in a cooling / heating tank portion formed in a fixed mold in which parts are combined, or to insert / use in a cooling / heating tank portion formed in a core. Needless to say.

[0021]

As described above, the present invention is a mold partitioning tool comprising an annular fixing portion having a collar portion on the outer periphery thereof and a flat partition plate portion orthogonal to the annular fixing portion. The collar part can be easily inserted into the mold by inserting and clamping it into the step part etc. formed on the mating surface of the mold parts. When the collar part is inserted into the step part, the mating surface of the mold It is possible to prevent the displacement of the waterproof ring inserted and placed in the mold to facilitate the assembly of the mold, and it is sufficient if the mold parts are formed with a stepped portion around the cavity forming the cooling and heating tank portion. Therefore, it is possible to easily manufacture the mold parts.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a cooling / heating tank partitioning tool according to the present invention.

FIG. 2 is a side view showing an embodiment of a cooling / heating tank partitioning tool according to the present invention.

FIG. 3 is a cross-sectional view showing a state where the cooling / heating tank partitioning tool according to the present invention is inserted into a mold.

FIG. 4 is a cross-sectional view showing a state in which a cooling / heating tank partitioning tool according to another embodiment is inserted into a mold.

FIG. 5 is a third partitioning device for a cooling / heating tank according to the present invention.
Sectional drawing which shows the state which inserted the Example in a metal mold | die.

FIG. 6 is a third partitioning device for a cooling / heating tank according to the present invention.
The perspective view which shows an Example.

FIG. 7 is a fourth partitioning device for a cooling heating tank according to the present invention.
The perspective view which shows an Example.

FIG. 8: Fifth partitioning tool for cooling and heating tank according to the present invention
The perspective view which shows an Example.

FIG. 9 is a cross-sectional view showing a mold including a conventional partition plate.

FIG. 10 is a plan view of a conventional movable type.

FIG. 11 is a view showing another embodiment of the conventional cooling and heating tank portion.

[Explanation of symbols]

10 partitioning tool 11 annular fixing part 15 Collar part 17 Partition plate part 21 Auxiliary plate 25 Projection 43 Fixed mold 49 Product space 56 Movable type 58 Movable insert piece 61 Cooling and heating tank section 65 Partition plate 75 waterproof ring

Claims (3)

[Claims] 1. A ring-shaped fixing part having a diameter substantially equal to the width of a flat plate-shaped rectangular partition plate part, and the ring-shaped fixing part is sandwiched between mold parts on the outer periphery of the ring-shaped wall part. A partitioning tool for a cooling and heating tank for a mold, which has a collar portion, and the flat plate-like partition plate portion is arranged in a direction of a central axis of the annular fixing portion so as to be orthogonal to the annular fixing portion. 2. The cooling and heating tank for a mold according to claim 1, wherein the auxiliary plate portion orthogonal to the partition plate portion has a flat plate shape in the central axis direction of the annular fixing portion. Partition tool. 3. The partitioning tool for a cooling and heating tank of a mold according to claim 2, wherein the partitioning plate portion and the auxiliary plate portion have projecting portions on their side surfaces.