JPH0536659Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a cooling water passage configuration that constitutes a detour passage along the shape of a molded product in a mold used for injection molding or the like.

(Prior Art) Generally, a mold used for injection molding or the like has a cooling water passage for cooling the molding part. In the case of a mold for forming a product with a deep drawing, a detour portion matching the shape of the molded product may be provided in the middle of the cooling water passage in order to cool the molding part as uniformly as possible.

Conventionally, in such cases, Fig. 11 and Fig. 1
The cooling water passage structure shown in Figure 2 was adopted.

That is, a hole 3 is formed in the mold 2 so as to be perpendicular to the main passage 1, and an opening 4 of the hole 3 is provided in the end surface of the mold 2. Then, a baffle plate 6 is fixed to the support 5, the buffle plate 6 and the support 5 are inserted into the hole 3 through the opening 4, and the support 5 is screwed to the outside of the hole 3. As a result, a bypass passage is formed from the main passage 1 to the hole 3, and the cooling water flowing from the main passage 1 detours above the baffle plate 6 (as shown by arrow A in FIG. 11) and returns to the main passage. It was supposed to flow through Passage 1.

(Problem to be Solved by the Invention) However, in the conventional cooling water passage structure described above, the support body 5 is rotated together with the butt-full plate 6 while the buff-full plate 6 and the support body 5 are fixed. Since they must be screwed together, the full plate 6 and the hole 3 must be loosely fitted,
As a result, there was a problem in that the cooling water leaked out from the gap, as shown by arrow B in FIG. 11, and the flow A of the cooling water was reduced. A problem has been that the cooling efficiency of the C portion of the mold 2 is decreased due to the decrease in the flow A of the cooling water.

Further, in the conventional method described above, many work steps must be performed as shown below in order to ground the buttful plate 6 in the hole 3, resulting in poor work efficiency at the assembly stage.

The work was carried out in the following steps.

(1) Before installing the buttful plate 6, completely tighten the support 5 into the hole 3 of the mold 2 using the tool 7, and mark the alignment mark M' corresponding to the mark M on the mold 2 on the support 5 ( (See Figure 13).

(2) Remove the support 5 from the hole 3 (see Figure 14),
The buttful plate 6 is welded to the support 5 in alignment with the alignment mark M' (see FIG. 15).

(3) Tighten the support body 5 with the full plate 6 attached to the hole 4 again.

Note that techniques similar to the conventional aspect described above are disclosed in, for example, Japanese Patent Application Laid-open No. 126141/1983 and Japanese Patent Publication No. 1983-126141.
This method is also disclosed in Japanese Utility Model Publication No. 52209, Japanese Utility Model Publication No. 17297/1983, etc., but these still have the same problems as mentioned above.

The purpose of this invention is to improve the cooling efficiency of the mold near the detour passage by eliminating the gap between the buttful plate and the hole for forming the detour passage, and at the same time to facilitate the installation of the buttful plate installed in the hole during the manufacturing stage. The objective is to improve workability in the process.

(Means for Solving the Problems) The present invention, as a means for solving the above-mentioned problems, provides a hole 3 that intersects with the main passage 1 of the cooling water.
, and attach the buttful plate 6 to the hole 3 to close the hole 3.
In a mold 2 in which cooling water flows along a baffle plate 6, the buffle plate has a cross section of approximately S.
It is formed from a letter-shaped elastically deformable plate material, and is integrally provided with a support 5 having a seal portion 8 on the outer circumference at its base end, and the support 5 is press-fitted into the opening 4 of the hole 3. Then, the buff-full plate 6 is positioned in the hole 3, and a plug body 9 is screwed into the portion of the hole 3 outside the support body 5.

(Function) With this configuration, the hole 3 and the baffle plate 6 are completely sealed except for the deepest part, and all of the cooling water flowing from the main passage 1 passes through the deepest part of the hole 3. . Also, Batsuful board 6
At the time of installation, the buff-full plate 6 and the support body 5 are integrated in advance and press-fitted into the hole 3 so as to divide the main passage 1. During this press-fitting, the support 5 and the base end of the hole 3 are brought into close contact with each other by the seal portion 8, and then the opening 4 of the hole 3 is closed by the stopper 9, thereby preventing the support 5 from coming off.

(Example) Hereinafter, an example of the present invention will be described in detail based on FIGS. 1 to 12. Note that FIGS. 1 to 5 show a first embodiment, FIG. 6 shows a second embodiment, and FIGS. 7 to 10 show other embodiments.

First, a first example will be explained. In FIG. 1, a mold 2 is provided with a hole 3 to form a main passage 1 and a detour passage, as in the conventional embodiment described above, and an opening 4 of the hole 3 is provided on the end surface of the mold 2.
is provided, and a baffle plate 6 is inserted through this opening 4. The end surface side of the mold 2 of the hole 3 is formed to be slightly tapered open, and a thread groove 10 is carved on the inner circumferential surface of that portion.

On the other hand, the full board 6 is made of iron, stainless steel, steel,
It is made of a metal plate such as aluminum, and is formed in a substantially S-shaped cross section across the width direction, as shown in FIG. The width H of the buttful plate 6 is set slightly larger than the inner diameter I of the hole 3 of the mold 2, and when it is press-fitted into the hole 3, it is elastically deformed and the approximately S-shaped cross section becomes more curved. It has become attached to the inner surface of the body. Therefore, the tight fit between the full plate 6 and the hole 3 is achieved. Further, the base end portion of the buff-full plate 6 is welded to a metal support 5, and an O-ring as a seal portion 8 for preventing water leakage is fitted to the outer peripheral portion of the support 5. A screw hole 12 for attaching a driving jig 11 is formed in the center of the lower surface of the support body 5, and a mark M' indicating the position of the buttful plate 6 is attached to the peripheral edge of the lower surface as shown in FIG. There is.

Further, reference numeral 9 in FIG. 1 is a metal stopper, and a screw thread 13 is carved on the outer periphery of the plug so that it can be screwed into the thread groove 10 of the hole 4 through the thread 13. It's summery.

In the above configuration, when attaching the buttful plate 6 to the hole 3 of the mold 2, first the screw hole 12 of the support body 5
The driving jig 11 is screwed in, and force is applied to the driving jig 11 to insert the buttful plate 6 together with the support 5 into the opening 4 of the mold 2 as shown in FIG. At this time, the mark (not shown) on the mold 2 and the mark M' on the support body 5 are aligned, and the angle in the hole 3 of the buff-full plate 6 is adjusted to an optimum state. Since the width H of the buttful plate 6 is set larger than the inner diameter I of the hole 3, as the buttful plate 6 continues to be inserted, the hole 3
Press-fit resistance will be applied from the inner surface of the hole 3. However, by further pushing the buff-full plate 6, the buff-full plate 6 will be elastically deformed, and the buff-full plate 6 and the hole 3 will come into close contact with each other. At this time, the support 5 is also press-fitted into the hole 3 of the mold 2 on the outside thereof, and the support 5 and the hole 3 are sealed by the seal portion 8.

Thereafter, the plug 9 is screwed into the hole 3 of the mold 2 from the rear of the support 5 to complete the installation work.

When cooling water is introduced into the thus completed cooling water passage from the upstream side of the main passage 1, the flow path of the cooling water is changed in the direction of the hole 3 by the baffle plate 6 in the middle of the main passage 1. All of the cooling water that has flowed into the hole 3 reaches the deepest part of the hole 3 along the baffle plate 6, where it is detoured as shown by arrow A in FIG. 1 and returned to the main passage 1.
Therefore, the cooling efficiency at point C of the mold 2 is good.

In addition, when removing the buttful plate 6 due to design changes, etc., after removing the plug body 9, attach the hammer ring 14 to the driving jig 11 as shown in FIG. When the screw is screwed into the screw hole 12 of the support 5, a blow is applied to the hammer ring 14 in the direction shown by arrow D in the figure. As a result, the support body 5 and the baffle plate 6 can be easily removed.

Next, a second embodiment will be described. In this embodiment, as shown in FIG. 6, a baffle plate 6 having a substantially S-shaped cross section, a support body 5, and a seal portion 8 are integrally formed of a soft resin such as polyethylene. In the case of this embodiment, the basic operation and effect are the same as those of the first embodiment, but since the three members are integrally formed from resin, costs can be reduced compared to the first embodiment described above. Become. As a modification of the second embodiment, a cap nut 16 may be insert-molded in the support 5 portion as shown in FIGS. 7 and 8, or a support nut 16 may be formed as shown in FIGS. 9 and 10. A rib 17 may be provided on the body 5. In the former case, the driving jig 11 can be screwed into the cap nut 16 to attach and detach the buttful plate 6 to the hole 3, and in the latter case, a pair of pliers (not shown) can be used. The buttful plate 6 can be attached to and detached from the hole 3 by grasping the rib 17 using the above-described method.

(Effects of the invention) As explained in detail above, according to the invention,
Since the buttful plate can be press-fitted into the hole for forming the detour passage while being reduced in the width direction, there is no gap between the buttful plate and the hole except for the deepest part, resulting in cooling to the deepest part of the hole. The effect is that the water circulates around the area more efficiently, improving the cooling efficiency in the vicinity.

Furthermore, since the baffle plate can be installed in the hole for forming the detour passage without rotating it, the orientation direction of the buffle plate can be easily adjusted (aligned) when the buffle plate is assembled. Therefore, workability in the manufacturing stage is improved.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the first embodiment of the present invention, Fig. 2 is a rear view thereof, Fig. 3 is a perspective view thereof, and Figs. 6 is a perspective view of the second embodiment, FIG. 7 is a side view of a modified example of the second embodiment, partially shown in cross section, FIG. 8 is a rear view of the same, and FIG. 9 is a perspective view of the second embodiment. 10 is a rear view of the second embodiment, FIG. 11 is a sectional view showing a conventional mode, and 12 is a sectional view taken along the line E-E in FIG. 11.
13 to 15 are perspective views showing the procedure for attaching a conventional baffle plate. 1... Main passage, 2... Mold, 3... Hole, 4
...Opening, 5...Support, 6...Full plate, 8
...Seal part, 9...Plug body.

Claims (1)

[Scope of utility model registration request] A mold in which a hole is provided to intersect with the main passage of the cooling water, and a baffle plate is attached to the hole so that the cooling water flows inside the hole along the buffle plate,
The buff-full plate is formed from an elastically deformable plate material having a substantially S-shaped cross section, and a support body having a seal portion on the outer circumference is integrally provided at the base end thereof, and the support body is connected to the opening of the hole. A cooling water passage structure for a mold, characterized in that the buff-full plate is positioned in the hole by press-fitting, and a plug is screwed to a portion of the hole outside the support.