JPS5842006B2 - Resin molding equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mold apparatus for manufacturing resin products having relatively sliding parts.

Conventionally, resin molded parts having sliding parts have been manufactured by molding them separately and then fitting them together to form the sliding parts.

For example, as shown in FIGS. 1 to 3, the cold air blowing grill part of the cooler has holes 2 formed in the side of the blowing grill frame 1.
By inserting the shaft 4 of the blade 3 with a smaller diameter than the inner diameter of the hole 2, the shaft 4 can slide on the inner surface of the hole 2, and the blade 3 can rotate around the shaft 4. In this manufacturing method, after molding the grill frame 1 and the blades 3 individually, the blades 3 are bent and the shaft 4 is inserted into the hole 2 to assemble them.

This method had the following drawbacks.

(1) Many assembly steps are required for fitting and assembling after molding.

(2) There is a geometrical limit to fitting and assembling after molding.

(3) Productivity is poor because molds are used for each part, and each part is molded separately.

(4) Since the two parts are molded separately, quality control and inventory control are twice as necessary.

(5) Since each sliding part is assembled by fitting together after molding, dimensional accuracy of the fitting part is required, and in order to obtain this dimensional accuracy, the molding conditions must be strictly controlled and adjusted for each item. No.

(6) Even if the molding conditions are adequately controlled, products that are difficult to fit together tend to be produced, resulting in many defects.

There were other drawbacks.

The present invention replaces resin products with sliding parts, which were conventionally made by molding two or more parts separately and integrating them by assembling them to form a sliding part, so that they slide on each other. This makes it possible to mold in a mold, and even for products that have two layers of blades 5 and 6, as shown in Figures 4 and 5, which was previously impossible. It is an object of the present invention to provide a mold device that enables manufacturing within the same mold.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings from FIG. 4 onwards.

Reference numeral 7 denotes a cold air blower IJ,ny of an air conditioner molded by the molding apparatus according to the embodiment of the present invention, and the upper layer blade 5 and the lower layer blade 6 are rotatably supported by a grill frame 8Vc.

9 is a fixed side mounting plate, 10 is a runner stripper plate, 11 is a fixed side template, 12 is a movable side template, 13 is an ejector plate, 14 is a space for the ejector plate 13 to move, 15, 15 are sprue-buttons. 16
is the mounting plate on the movable side.

17 is a sprue bush provided on the fixed side mounting plate 9, 18
is the locate ring.

19 is a runner, 20 is a first sprue, 21 is a second sprue, and 22 is a third sprue, each of which is formed on the stationary template 11.

23 is an ejector pin provided to be able to penetrate the movable template 12, 24 is a cavity for the grill frame 8, 25a is a cavity for the upper layer blade 5, and 25b is a cavity for the lower layer blade 6.

Reference numeral 26 denotes a threaded block built into the movable side mold plate 12, a part of which is located between the upper layer blade cavity 25a and the lower layer blade cavity 25b.

Reference numeral 27 denotes a tilted hinge, the tip of which is fixed to the slide block 26, and the rear end supported by a sliding portion within the ejector plate 13.

28 is a liner lock pin, 29 is a finger pin fixed to the stationary template, and 30 is a slide core slidably fitted into the finger pin 29.

31 is an insert pin fixed to the slide core 30;
32 is a bolt that adjusts the sliding amount of the slide core 30.

Next, the molding process in the mold apparatus having the above structure will be explained.

The resin injected from the molding machine passes through the sprue bush 17, the runner 19, the first sprue 20, the second sprue 21, and the third sprue 22, and then into each cavity 24,
25a and 25b, and is cooled and solidified.

Once solidified, the mold opening of the molding machine is started, and first the fixed side template 11 and the runner stripper 100 are opened, and the sprue 20, 21, 22 and each cavity 24, 25a, 25 are opened.
The molded product in b is separated and brought to the runner stripper 10 together with the runner 19.

As the mold opening progresses further, the space between the runner stripper 10 and the stationary side mold plate 90 opens, and the runner 19 is separated from the runner lock pin 28.
0, 21, 22 are removed from the mold.

When the mold is further opened, the space between the fixed mold plate 11 and the movable mold plate 120 opens.

At the same time as this mold opening, the insert pin 31 that forms the product shaft incorporated in the slide core 30 is inserted into the figure pin 2.
9Vc, it retreats together with the slide core 30 and is removed from the grill frame cavity 24.

When the mold is further opened, the protruding rod 33 set in the molding machine
pushes up the ejector plate 13, and the ejector turbine 23 built into this plate pushes up the grill frame 8.
is separated from the movable mold plate 12.

At the same time, the inclined pin 27 operates, and the connected slide block 26 moves along the inclined part 35, and the intersecting part 36 shown in FIG. The entire product, in which the blades 5 and lower blades 6 are combined with the grill frame 8, and the mold are completely separated, and the product is taken out.

After this, the molding machine starts to close, and the mold is closed again to the state shown in FIG. 6, and the next cycle begins.

Next, to explain in detail the forming operation of the blade shaft part, as shown in FIG.
The grill frame 8 and the blades 5 and 6 are separated by this butt portion 37vC and form a gap during sliding.

When the mold begins to open, the fixed side mold plate 11 and the movable side mold plate 12 shown in FIG.
1 moves back in the direction of the arrow, stops at the stop bolt 32, and separates from the grill frame 8 and the blades 5 and 6.

As the mold opening progresses further, the blades 5 and 6 and the grill frame 8 are separated from the movable mold plate 12 by the edger turbine 23 and taken out from the mold.

As is clear from the description of the embodiments above, the resin molding mold device of the present invention can be used to assemble a resin molded product consisting of a fixed side member having a relatively sliding portion and a plurality of movable side members. In a resin molding mold apparatus, at least one of the movable side members is located at a location other than the parting surface during molding, and a cavity for the movable member located at the parting surface and a cavity located at a location other than the parting surface are used during molding. A slide block is provided between the cavity for the movable side member located at a certain location, and moves from between the two cavities to a position where the resin molded product can be taken out when taking out the resin molded product, and the slide block is used to open the mold. Since the device is characterized by being provided with a slide block drive means for moving the movable side members in accordance with the movement, the movable side members cross each other, and the movable side members are placed at a position other than the -no-S-ting surface of the -mold-. Even if a portion of the movable side member is located, it is possible to mold the movable side member in a slidable manner with respect to the fixed side member, eliminating the need for assembly work and 3
It is no longer necessary to inventory each component separately, which has the effect of increasing productivity and significantly reducing costs.

[Brief explanation of the drawing]

Fig. 1 is a partial front view of the air outlet grille of the cooler, Fig. 2 is a sectional view taken along the line 4 and 5 are a perspective view and a vertical cross-sectional view of a product obtained by a resin molding mold device according to an embodiment of the present invention, FIG. 6 is a vertical cross-sectional view of the same mold device, and FIGS. 7 and 8 are 9 is a plan view showing the positional relationship between the blow-off grille and the slide block, and FIG. 10 is a perspective view of the slide block. 5.6...Blade (movable side member), 7...
・Cold air blowout grill (resin molded product), 8...Grill frame (fixed side member), 11...Fixed side template,
12...Movable side template, 26...Slide block.

Claims (1)

[Claims] 1. A fixing member having at least opposing supporting parts and surrounded by the supporting parts to form a penetrating space, and a shaft part located in the space and formed at both ends supporting the fixing member. A resin comprising first and second movable members rotatably supported by the space member and provided in two layers in the mold opening direction, each of which exists independently in the direction penetrating the space of the space member. In a mold for molding a molded product, a fixed side mold plate and a movable side mold plate whose parting surface is a surface that divides the cavities of the first and second movable members, and the first and second movable members are a slide core that is located in the cavity of the fitting portion of the shaft and the fixing member to separate the shaft and the fixing member, and that moves in the axial direction of the shaft when the mold is opened; a part that is located between the two movable members and forms a cavity surface of a part of the first and second movable members, and that is in close contact with a plane part of the parting surface perpendicular to the mold opening direction; A resin molding mold device comprising a slide block that moves in a direction perpendicular to the mold opening direction in conjunction with the movable side mold and retreats to a position where the second movable member can be taken out when the mold is opened.