JPS58171913A - Mold for plastic pipe molding - Google Patents

Abstract

PURPOSE:To obtain the titled mold of a simple structure and simplify operations of a mold release and assembly, by reducing the diameter of a split core by drawing a core shaft after releasing a movable mold and a fixed mold, subsequently drawing a cylindrical core together with the core shaft from a molded product. CONSTITUTION:When a casting stock is hardened, a movable mold 22 is released and the molded product 29 in which a drawing core 23 is incorporated is released from a fixed mold 21. Then a core shaft 26 is drawn. In this case, the diameter of the first and second split cores 28a, 28b is reduced while the rear end faces of the flange 26b of the tip of the core shaft 26 and a large diameter conical part 26a are going to be contacted to the head parts 24a, 25a of the first and second cylindrical cores 24, 25. Then the first and second cylindrical cores 24, 25 and the split core 28 are drawn together with the core shaft from a molded product. In an assembly the core shaft 26 is pushed in the first and second cylindrical cores 24, 25 and expands the diameter of the split core, then these are inserted into the cavity shaped by combining the fixed mold 21 and the movable mold 22.

Description

DETAILED DESCRIPTION OF THE INVENTION The zero firing vA is suitable for plastic pipes wLfjji, and the plastic pipe w1. This is the 11KII meeting for sushi chefs.

A plastic pipe U-removal metal am having an undercut on the inner circumference curve is also disclosed in Jθ-17161. In the explanatory diagram of the money leakage mentioned above in the 1st EIIL,
For f IIJ gold - < 24 and consisting of a 1-drawn core (3)), for the drawn core, a core with a core shaft (4) at / zero (II and a core shaft I) A steel core (1) that moves together with a slide core (cap and core shaft 14) installed in a pinching function.
and 1 which was set for 3WIAK on the slide core (6).
1 lead it (1) and the koji # formed in the inclined direction of the lead board
J#lI-4 is placed on the rice table, and the round cut tray formed on the end face of the stone sea bream (il)
It consists of the tm core.

And the slide core (
Move the spring forward and backward on the core axis-], and slide the core (・)
When moving forward or backward, the undercut core wheel I moves through the m front groove and the l idley on the front)
, when the undercut part of the vehicle was exposed,
x, - form the garden, and the nine - vice time KFi2i: warm 1
1140 moves toward the center and comes off the undercut part of the molded product, making it easier to improve the shape of the molded product.

By the way, in conjunction with the above-mentioned vertical movement of the moving metal grip, the drawing core was placed in the empty space formed by the metal and the working metal grip). Many of the parts are manufactured by M, the structure is delicate, and the structure is similar to 6.
I admire the accuracy of the production and Asatake in order to make the moving parts and the drawing core all work together.

Zero Koushi is a nine-piece model that aims to make the structure ceramic by independently making 17 #TI dosho leaks and drawn cores, and its runners are fixed Kanajima, +2] #jJ Yu-, From the drawing core, the drawing core is Ill5/ and the first cylindrical core, and the undercut part has a large part, and the above Ig/ and the first cylindrical core K
Consisting of an I$I large core shaft and first and 11110 split cores alternately attached to the large diameter part of the core shaft, the first
And the first split core is engaged with the large diameter part of the core shaft in the wedge engagement direction of the large and small inclination angles, and at 1/ and the close contact state lI of the first split core, the Without K so that both hook edges of the split core were on the #iII side edge of the first split core, the #jJ rear 11m1t direction of the split core was restrained with the cram/and the first cylindrical core. At T: Pull out the shaft. Move the above-mentioned IMl and the second split core to the inside of the molded product using central force, and then move the @/ and the first cylindrical core to the core. It is made of gold for use as a glass pipe that can be pulled out along with the shaft.

The present invention will be explained below using practical examples shown in FIGS. 2-4.

As shown in the drawing, the piece 11- is made of clasp 1 metal, and C2311 is a drawn core. Movable gold acupuncture needles are up T for a certain amount of gold and bronze.
:IIIJ. The drawn core V4it is supported by a well-known flat membrane in the cavity formed by the fixed metal rod and the movable rod, forming a synthetic resin product.

-The first cylindrical core for forming the inner straight part of the drawn core @Fi molded product- and the plow-shaped core of III-
and a core shaft inserted into the first and second cylindrical cores,
The large diameter cone (sea) of the core shaft is twisted with a plurality of wedge-engaged portions (cores).

The tlAmK of the core shaft is formed with an alligator part (isb), and when the core shaft (c) retreats, the neck i (, g of the cylindrical core of @/
4m) and pull out the cylindrical core (goods) of @/. The large cone part (aaa) of the core shaft is cut off by the part where it meets the undercut Q (Jlea) of the rft and qb), so that it becomes a large pole in the pulling direction K of the core shaft. For example, an inclined surface in the dl direction is formed on the #A inclined circle, and this inclined surface is divided into 6 groups, and the slope angle te of each daka-g is set as follows. It is distributed as t. Then, each f@- self is provided with a protrusion (gg) with a tg direction, and the split core attached to the above-mentioned slope is connected to the weight core (gaa) of the cram school/ and the collector core. It is made up of a weight head (lazy) and a large 11:l-n capital (lazy) of the above-mentioned core axis.
m) is wedge-engaged with the inclination Wi. The inner garden of this split core has an inward slope of θ and θ/1 to match the inclination direction of the mounting pin, and is provided with a dovetail groove (ffiaa).

When the above-mentioned split core is located in the large cone section (6m), it is located in the large cone part (6m), and the first and first part (6J) are located in the 1st and 1st part, as shown in the diagram and the co-cone. Child (lazy 11m) and (a
sh) to form an annular body, and its outer thickness forms an undercut portion. In addition, when the large-diameter cone is located at the pole-11K, it is placed in the narrow pole-like shape, and as shown in Figure 1 and No. b
) is pulled in the same direction as the core shaft 10 @ core direction, and the outer button of each split core is placed at the inner tc position of the inward straight part of the molded product. Split cores of IK/Urabijukuko (
maa) (1 easy b) as #advance and backward movement of the core axis KIIl@
At the ninth point where it reaches the fine pole and expands, the minute core of @/ (lJ
Im
), Il! ! The lower surfaces of both edges of the divided core (ash) of the l-column are tilted over the entire length, and the lower surfaces of both edges of the divided core of the lattice (ash) are tilted downward over the entire length to form a ring. lIBm
) so that it overlaps the top of both edges of the image.

Because of the above structure, when the core shaft is pulled out with a downward motion with both ends of the core constrained by the first and first circular core thresholds,
First, the first portion of the wedge-locked S-locking FkJK with an inclination angle of θ - the core is located toward the center of the core axis FfjJ! /c-The diameter becomes thinner all at once, and the weight core becomes thinner in the direction of the center of the core i.
It becomes i1. When the core shaft is pushed in once, a downward movement of the core #i@J, that is, a vote body of 1 m, is formed by the operation opposite to that described above.

Book 111f! AOfIl#M is removed and assembled by the following operations. That is, define * #Ii@U, movable mold (2) warped drawing core g14klF3 When it is valued, first 11Fl gold 1M
1 (2) to 111! It is extracted from a ready-made product with a built-in core. Subsequently, the collected paper product is held by known means, and the core 1 is pulled out by this downward motion. In this case, the rear end direction of the brim B (tab') at the tip of the core shaft (b) and the rear end of the large cone butt (Xaa) is @/ and the neck (ca) of the cylindrical core of the cram school. (, tea) The split core of the 1st and 11I pieces (lazy 81) (t
ab) is the force J Ugly and the 4th cause <The thin ball is made as shown, and then the cylindrical core - ■ and the division core - of the basket/coat - together with the core shaft: Ell crystal is pulled out and made of gray copper. The removal of the crystal is completed.

Prepare the basic axis t-collection/and push it into the first office core, and the minute core will be again shown in Figure 2 and in the shape of Xie J-in 11!
The diameter is enlarged to 1, and this is inserted into the hollow formed by the polymerization of Ashigane and 1 Kinboro.
Tachishikou completes.

As above 111, there is one lantern made of ashigane, phage movement Kingon, a drawn core, a drawn core T-艷/and a bait JO cylindrical core, and a large undercut capital. A core shaft having a diameter of 1 m/& that was attached to the first tiered core, and @/ and a core of 5M alternately attached to the large diameter part of the core shaft. The seventh and first weight cores f: The split cores are set at the large diameter part of the core shaft and have an inclination angle of 4 orders of magnitude to create the stroke difference necessary for small diameter operation. 11! At the same time, the first warp and the first part - the close contact of the core I
/c, so that both edges of the split core of Kanko are on both @ edges of the weight core of Juku /, and the front II end of the split core is
1! By pulling out the core while restrained by the thin cores of ot-1 and Jukuko, move the cocoon cocoon of above-/and 1 & J towards the center, ry, the inside of the lipid crystal inward. d1, and then move the cylindrical core together with the core shaft to d1.
After gradually pulling out the plastic vibrator for IM, I realized that I was using a plastic vibrator, and after pulling it out, I made it into an independent structure, and pulled it out. Pull out the core shaft, which is the child's /@power member. From <ilK and 9, the -j! of the gold layer is easy and the assembly operation is simplified, and therefore the formation process becomes 1tK.

[Brief explanation of the drawing]

FIG. 7 is a cross-sectional view of a known wt noodle. Figures 1lSJ to 4 are explanatory diagrams of molding molds that are crushed into parts 1 and 2. The figure is a chest view showing the state of release of the drawn core after removing the molded #M. The diagram shows the @internal causes of the drawn core, and Figure 3 is a cross-sectional view taken along the Mumu line of the notebook diagram.
o) The figure is a cross section taken along line m'm in Figure 3. 1211: Identification mold, 2: 0T moving mold, 2: Drawing core, 124i: 1st cylindrical core, 4: 2nd cylindrical core, depression.

Claims (1)

[Claims] (Mount 3II8d is placed, QT is measured, the drawing core is placed on the seventh and second planar cores, the first die is placed on the cut part, and Above, A/I
The core shaft inserted into Jc06's 1st yoke and the upper rk! ,
The core axis of the core sleeve! 4d/(1st warp and 2nd core with phlegm deposited alternately, 4 cores, 5th and 7th cores and 1 core of the second core were placed in the large diameter part of the core. The first and second strokes of the first and second strokes are made in mind, and when the strokes of the first and second strokes, large and small, are aligned on the surface of the wrestler's base, the first and second strokes are made. VζI, 4] No. - Core 1IIi1jI!
There is no yc so that the 4th edge is on both sides of the secondary core, but after 41jIjτ of the -core (/ and the -6- is restrained by the ura-shaped core of the By drawing the If-core of the above-mentioned No. 1/1 stone, make φ1iltla with the inner cylinder of the circle of the relative product, and then draw the cylindrical shape of the No. 1 and No. A plastic pipe made from Wudan, which is characterized by the use of bamboo shoots as the core and thread.