JP2009154385A - Injection molding die - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a means for improving productivity of glass with a frame body manufactured by injection molding although a resin frame body is formed by injection molding in the peripheral edge part of plate glass used for a side window of a vehicle. <P>SOLUTION: This injection molding die used for injection-molding the resin frame body at the peripheral edge part of the plate glass used for the side window of a vehicle, comprises an injection molding die for a left side window, an injection molding die for a right side window, and a connecting die. The connecting die is provided with a runner from a connecting die injection port into which fluid resin is injected from a resin injection apparatus, to an injection port of the injection molding die for the left side window and an injection port of the injection molding die for the right side window. An upper die of the connecting die, an upper die of the injection molding die for the left side window, and an upper die of the injection molding die for the right side window are integrated using fixing parts. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a frame-attached glass in which a frame is integrally formed on a plate glass, and more particularly to an injection mold used for integrally forming a frame on a plate glass by injection molding.

  In a window of a vehicle such as a train or an automobile, the plate glass is generally attached to a metal vehicle body using a resin frame.

  In recent years, resin-made frame bodies are directly molded into plate glass by extrusion molding or injection molding of resin in a fluid state, and glass with a frame body in which the frame body and plate glass are integrated is used for assembling vehicles. Used as a part.

  When producing a glass with a frame by injection molding, as shown in FIG. 5, the plate glass 3 is held between the upper mold 1 and the lower mold 2, and the frame cavity 4 is formed around the plate glass 3. After the molten resin is injected into the frame body cavity 4 and the molten resin injected into the frame body cavity 4 is solidified, the upper mold 1 is removed, and the frame body is formed into a plate glass. The integrally formed glass with a frame is taken out from the lower mold 2 to manufacture the glass with a frame.

  In the case where such a glass with a frame is a glass used for a side window of an automobile or a vehicle, the shape of the runner and injection port for injection molding is made with respect to the glass on one side because it is in a symmetrical shape. By examining various conditions such as the resin injection pressure and the injection amount, a mold is manufactured, and a symmetrical mold is manufactured for a pair of glasses.

  Hereinafter, the right side and the left side are the right side and the left side when facing the traveling direction of the automobile or vehicle.

  The mold for injection-molding the right-side window glass frame and the mold for injection-molding the left-side window glass frame are symmetrical, so the injection resin pressure and resin when molding the frame The molding conditions such as the injection amount are the same for the case of injection-molding the right-side window glass frame and the case of injection-molding the left-side window glass frame.

  For this reason, as shown in FIG. 4, a single resin injection device 10 is used, and a left-side window glass frame is formed using a left-side window lower mold 2 and a left-side window upper mold (not shown). The injection molding and the injection molding of the right window glass frame using the right window lower metal plate 3 and the right window upper metal mold (not shown) are performed alternately by moving the resin injection device 10. It was.

On the other hand, when molding a small part by injection molding, for example, a mold for molding a large number of parts at a time as disclosed in Patent Document 1 is used.
JP 2000-158493 A

  This invention makes it a subject to provide the means which improves the productivity of the glass with a frame produced by injection molding.

  The mold for injection molding of the present invention is an injection mold used for molding a resin frame at the peripheral edge of a plate glass used for a vehicle side window by injection molding. Left side window injection molding from a connection mold injection port into which a flowable resin is injected from a resin injection device into the connection mold. The injection mold is characterized in that a runner is formed up to the injection hole of the injection mold and the injection hole of the right side window injection molding mold.

  The injection mold of the present invention is the above-mentioned injection mold, wherein the upper mold of the connection mold, the upper mold of the left side window injection mold, and the upper side of the right side window injection mold. An injection mold, wherein the mold is integrated using a fixed portion.

  The mold for injection molding used for the production of glass with a frame of the present invention is an injection mold for increasing the production amount per unit time and reducing the energy consumption for the production of glass with a frame per sheet. provide.

  When manufacturing window glass with a frame by injection molding, the optimal mold used for injection molding is developed at the vehicle body design / trial stage.

  Many of the side windows for automobiles and vehicles have a symmetrical shape, and therefore, the optimal mold development is performed on either the left side window glass or the right side window glass.

  For example, the optimum mold shape and resin injection conditions are determined for the right window lower mold 2 and the right window upper mold (not shown) used for manufacturing the right window as shown in FIG. The right window lower mold 20 is formed with an injection port 6 for injecting a fluid resin, a cavity 7 for forming a frame, and a runner 8 for causing the fluid resin to flow from the injection port 6 to the cavity 7. .

  When the frame is injection molded on glass, as shown in FIG. 3, the lower mold 20 and the upper mold 30 are stacked with the glass 40 interposed therebetween, and high-temperature and high-pressure fluid resin enters the cavity 7 from the injection port. The resin that is injected and injected into the cavity 7 cools, and a frame is formed.

  The lower mold 20 and the upper mold 30 are provided with fixing portions 13 and 14 for fixing the mold so that the mold does not move during injection of the high-pressure fluid resin.

  The mold for injection molding of the present invention has a mold used for frame forming of the left window glass and a mold used for frame forming of the right window glass with respect to the window glass having a symmetrical shape. Integrating them with a connecting mold, it is possible to simultaneously injection-mold the left and right window glass frames.

  As shown in FIG. 1, a lower mold 2 for a right window mold and a lower mold 3 for a left window mold are integrated using a lower mold 1 of a connection mold, and an injection port for the connection mold is obtained. 5, a high-temperature and high-pressure fluid resin is injected from the resin injection device 10.

  The injected flowable resin passes through the connecting mold runner 4, the right window mold and the left window mold inlets 6, 6 ′, runners 8, 8 ′, and the cavities 7, 7 ′. And a frame is formed around the glass edges 9, 9 '.

  When the fluid resin is injected into the mold by the resin injection device 10, the right window mold, the left window mold, and the connection mold in FIG. As shown in FIG. 3, the upper mold of each of the mold, the left window mold, and the connection mold is preferably fixed by fixing portions 11, 12, 13, and 14.

  Further, it is preferable that the fixing portions 13 and 14 are used for fixing to a hydraulic jack device or the like.

It is this schematic which carries out injection molding of a frame using the injection mold of the present invention. It is a schematic plan view of the lower metal mold | die for left windows. It is a schematic sectional drawing in the position of aa 'of FIG. 3 when a lower metal mold | die and an upper metal mold | die have arrange | positioned and accumulated. It is this schematic drawing which injection-molds a frame using the conventional injection mold.

Explanation of symbols

1 Lower mold for connecting mold 2 Lower mold for right window mold 3 Lower mold for left window mold 4 Link mold runner 5 Link mold inlet 6 Note for right window lower mold Inlet 6 'Lower mold injection port for left window 7, 7' Cavity 8, 8 'Runner 9, 9' Glass edge 10 Resin injection device 11, 11 ', 12, 13, 14 Fixed part 20 Lower mold 30 Upper Mold 40 glass

Claims (2)

  In an injection mold used for molding a resin frame on the peripheral edge of a plate glass used for a vehicle side window by injection molding, a left side window injection mold and a right side window injection mold It consists of a mold and a connection mold, and from the connection mold injection port into which fluid resin is injected from the resin injection device into the connection mold, the injection port for the left side window injection mold and the right side window An injection mold characterized in that a runner is formed up to the injection port of the injection mold. The upper mold of the connecting mold, the upper mold of the left side window injection molding mold, and the upper mold of the right side window injection molding mold are integrated using a fixed portion. The injection mold according to claim 1.

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