JPH0540974Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is used in the field of molding molds, and relates to a temperature control piping mechanism in a mold with a vacuum degassing structure.

Conventional technology Conventionally, when molding a product using a thermosetting synthetic resin using a mold A, vacuum evacuation was applied to the mold A to prevent cavities and pinholes from forming inside the molded product. It is equipped with an air mechanism. In this deaerator structure, a hose hole was installed in the space for the movable part 2 in the temperature regulating piping for the movable part C in the mold A, as shown in FIG.

Problems that the invention aims to solve However, with conventional hose-hoo piping, space is required inside the mold A for both the sliding of the movable part C and the slack part of the hose-hoo installed, and the mold B became larger, which led to problems such as an increase in mold material costs, difficulty in piping work, and an increase in assembly man-hours.

This invention directly connects a temperature control pipe to the movable part in the mold and maintains sufficient airtightness between this pipe and the mold, eliminating the need for connections with hoses, minimizing the space inside the mold, and The purpose is to make the mold smaller, reduce the amount of materials used, make assembly easier, and simplify the process.

Means for Solving the Problems The present invention provides an upper mold 1a or a lower mold 1b of a mold 1.
A temperature control pipe 3 that communicates with the air passage 2a in the movable part 2 is slidably provided in either one of which the movable part space 1c and the movable part 2 are provided inside. The O-ring holder 4 is pressed onto the outer surface of the mold by the holding plate 7 so that the O-rings 5 and 6 of the O-ring holder 4 fitted into the mold are airtightly joined to the outer peripheral surface 3a of the temperature control pipe 3 and the outer surface 1d of the mold. 1d.

Function Since the present invention is constructed as described above, the upper mold 1a
When molding the synthetic resin material A interposed between the mold and the lower mold 1b, steam or oil for adjusting the temperature of the mold is sent to the air passage 2a of the movable part 2 through the temperature control pipe 3. When the movable part 2 is operated during molding, as the movable part 2 slides, the temperature control pipe 3
The airtightness of the space 1c for the movable part is limited by the outer peripheral surface 3a of the temperature control pipe 3 and the outer surface 1d of the mold.
It is held by the O-rings 5 and 6 of the O-ring holder 4, which are in airtight contact with the O-ring holder.

Example An example of the implementation of the present invention will be described with reference to the drawings. 1 is a mold consisting of an upper mold 1a and a lower mold 1b;
A space 1c for a movable part is formed inside the upper mold 1a, and a piping relief hole 1e communicating with the space 1c for a movable part is bored. The diameter R of the piping escape hole 1e is slightly larger than the diameter r of the temperature control pipe 3, so that the temperature control pipe 3 can move up and down and left and right to some extent and is fitted in a slidable manner. be. Reference numeral 2 denotes a movable part that slides within the movable part space 1c, and is provided so as to reciprocate while being guided by a guide plate 8 provided on the upper surface of the movable part space 1c. A ventilation passage 2a is bored in the movable part 2, and a temperature control pipe 3 is connected to the ventilation passage 2a. 4 is an O-ring holder that is airtightly inserted into the temperature control pipe 3, and is attached to the outer peripheral surface 3a of the temperature control pipe 3.
O-rings 5 and 6 are fitted to the inner circumferential surface 4a in contact with the inner circumferential surface 4a and the mold outer surface 1d of the mold 1, respectively, to maintain airtightness on the outer circumferential surface 3a of the temperature control pipe 3 and the mold outer surface 1d. The O-ring holder 4 is fixed to the outer surface 1d of the mold by means of the holding plate 7, leaving a small gap between the O-ring holder 4 and the outer peripheral side surface 4b.

In the figure, 9 and 10 are heat insulating plates attached to the upper mold 1a and lower mold 1b, and 11 is a connection between the space of the molded product and an external vacuum pump (not shown) to prevent the formation of cavities or pinholes in the molded product. 12 is a support, 13 is an upper mold 1a and a lower mold 1b for molding.
This is a seal rubber that maintains the internal airtightness when the two are engaged.

Effects According to the present invention, steam or oil can be sent to the ventilation path of the movable part for temperature regulation through a slidable temperature control pipe that is directly connected to the ventilation path, so conventional hoses are not required. is no longer necessary, and the space required inside the mold is only for the stroke of the movable part, which minimizes the space inside the mold.Since there is no need for space for piping such as hoses, the mold can be made smaller. , mold material costs are reduced. Furthermore, since the piping work can be done from outside the mold, the piping work is easy, the number of piping steps can be reduced, and the production cost of the molded product can also be reduced.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a mold provided with the temperature control piping mechanism of the present invention, FIG. 2 is an enlarged sectional view of the main part, and FIG. 3 is a longitudinal sectional view of a conventional example. Code: 1...mold, 1a...upper mold, 1b...lower mold, 1c...space for moving parts, 1d...mold outer surface, 1
e... Piping escape hole, 2... Moving part, 2a... Ventilation path, 3... Temperature control pipe, 3a... Outer peripheral surface, 4...
O-ring holder, 4a...inner circumferential surface, 4b...outer circumferential surface, 5, 6...O-ring, 7...pressing plate, 8
... Guide plate, 9, 10 ... Heat insulation plate, 11
...Exhaust passage, 12...Support, 13,13...
... Seal rubber, A... Synthetic resin material, R... Diameter (piping escape hole), r... Diameter (temperature control pipe), I...
...mold, b...molded product, c...movable part, d...space for movable part, e...hose.

Claims (1)

[Scope of utility model registration request] A temperature control pipe 3 communicating with the air passage 2a in the movable part 2 is connected to either the upper mold 1a or the lower mold 1b of the mold 1, which has a space 1c for a movable part and a movable part 2 inside. The temperature control pipe 3 is slidably provided.
O-rings 5 and 6 of O-ring holder 4 inserted into
The O-ring holder 4 is placed in such a way that the O-ring holder 4
A temperature control piping mechanism in a mold with a vacuum degassing structure, characterized in that the is fixed to the outer surface 1d of the mold by a presser plate 7.