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Injection molding die

A technology of injection molding and mould, which is applied in household appliances, other household appliances, applications, etc., can solve problems such as unevenness or depression on the surface of the frame that is difficult to eliminate

Inactive Publication Date: 2015-06-03
CENT GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] A method similar to the method of Patent Document 1 has a problem in productivity in that a frame is formed using a spacer, the frame is taken out from the spacer, and the taken out frame is mounted on a plate glass
Depending on the injection method of the pressurized gas, it is difficult to eliminate unevenness or depressions on the surface of the frame depending on the cross-sectional shape of the frame

Method used

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  • Injection molding die
  • Injection molding die
  • Injection molding die

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0115] Figure 4 Shown is a section through the frame portion of a framed glass in which the frame 10 is integrated with the flat glass 3 , manufactured by the mold according to the invention.

[0116] by using figure 1 The mold shown was used to make the framed glass. The mold consists of an upper mold 1 and a lower mold 2. The lower die 2 is provided with an auxiliary cavity 6 communicating with the frame cavity 4 via a communicating hole 5 .

[0117] The confluence position is estimated from the position of the injection port of the resin not shown in the figure and the volume of the cavity 4 for the frame, and the position of the communication hole 5 is set at the confluence position.

[0118] Such as figure 1 As shown, the plate glass 3 is held between the upper mold 1 and the lower mold 2 in such a way that the peripheral portion of the plate glass 3 is located in the cavity 4 for the frame, and polychloride is injected from an injection port not shown in the figur...

Embodiment 2

[0122] Figure 10 A cross section is shown of the frame part of a framed glass in which the frame 19 is integrated with the flat glass 13 manufactured by the mold according to the invention.

[0123] by using Figure 5 The mold shown was used to make the framed glass. The mold consists of an upper mold 11 and a lower mold 12 . The lower mold 12 is provided with an auxiliary cavity 16 communicating with the frame cavity 14 via a communicating hole 15 .

[0124] The polyvinyl chloride resin in molten state is injected from runner 17 and gate 18 into Figure 5 The frame of the mold is shown with cavity 14 in it.

[0125] Then, after the resin is cured, the upper mold 11 is removed, and the plate glass 13 with the molding frame is taken out from the lower mold 12 . Manufactured by cutting off the resin formed in the communication hole 15 and the auxiliary cavity 16 Figure 10 Shown is a framed glazing in which the frame 10 is integrated with the flat glass 13 .

[0126] In ...

Embodiment 3

[0128] Figure 15 Shown is a cross-section of a frame portion of a framed glass in which the frame 70 is integrated with the sheet glass 23 manufactured by the mold according to the invention.

[0129] by using Figure 11 The mold shown was used to make the framed glass. The die consists of an upper die 21 and a lower die 22 . The lower die 22 is provided with an auxiliary cavity 61 that communicates with the frame cavity 24 via a first communication hole 60 .

[0130] Furthermore, an auxiliary cavity 26 communicating with the frame cavity 24 via the communication hole 25 is provided.

[0131] The jig 62 is used as a fixing member. The jig 62 is inserted into the cavity 61 for the fixing member. Polyvinyl chloride resin in a molten state is injected into the Figure 11 The frame of the mold is shown with cavity 24 in it.

[0132] Then, after the resin is cured, the upper mold 21 is removed, and the plate glass 23 with the molding frame is taken out from the lower mold 2...

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Abstract

Provided is an injection molding die wherein a die is separated into two or more, a cavity for a frame is formed between the separated dies, and an auxiliary cavity is arranged in the cavity for the frame through a communicating hole. The communicating hole which communicates with the auxiliary cavity is arranged close to a point where a molten resin meets in the cavity or close to a gate or to a cavity for a fixed component or to the cavity for a thick frame.

Description

technical field [0001] The present invention relates to a glass with a frame in which the frame is molded integrally with a plate glass, in particular, the present invention relates to an injection molding process for integrally molding the frame onto the plate glass Molds for molding. Background technique [0002] In windows of vehicles such as trains and automobiles, plate glass is usually mounted on a metal body using a resin frame. [0003] In recent years, resin frames are directly molded onto flat glass by extrusion molding or injection molding of resin in a fluid state, and glass with a frame in which the frame and flat glass into a single piece. [0004] In the case of manufacturing glass with a frame by injection molding, such as Figure 19 As shown, a plate glass 93 is held between an upper mold 91 and a lower mold 92 , and a cavity 94 for a frame is formed in a peripheral portion of the plate glass 93 . Resin in a molten state is injected into the frame cavity ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/26B29C45/14B29L31/30
Inventor 中田修高山充宏
Owner CENT GLASS CO LTD
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