FI119051B - Injection molding arrangement for use in manufacture of pipe fitting, has sector cradles that are arranged in mold frame at different positions - Google Patents

Abstract

The arrangement has sector cradles (3) that are arranged in a mold frame (1) at different positions. An auxiliary frame of a core is coupled with the sector cradle.

Description

1 119051

Mold arrangement for injection molding

The present invention relates to a mold arrangement for injection molding, in particular for the production of plastic dimen- sions and / or shapes that differ in shape and / or shape from Dimen-5 using at least partially interchangeable mold and / or core surfaces.

At present, pipe types of the type described above are generally made using separate molds for each different diameter and joint angle, which is very expensive, since in practice, in addition to different diameters and joint angles, there is also a need for pipe joints where each joint is e.g. the socket end. As a result, the number of molds required in conventionally manufactured fabrication continues to multiply. The use of such molds also results in time-consuming and costly mold replacements with production tokens, which in itself significantly reduces productivity.

• · • »· • M · · 1 · '. For example, JP 802 0045 discloses, to a large extent, an implementation as described above, whereby by changing one mold part of a two-piece • 1 • 1 Il · ···, 25 molds, it is possible to · · make pipe connections of the same diameter, • · · * ... with different joint angles. From this publication, it is still * * known to use in the mold interchangeable pieces for the various joints of the pipe joint to be manufactured. However, this solution cannot eliminate the above-mentioned problems because, for example, when the diameter of the pipe joint changes • · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·

• · • ·: ·· 35 • · *. 1: The purpose of the mold arrangement of the present invention is to provide a decisive improvement on the above problems and thus to raise substantially the state of the art. To accomplish this purpose, the mold arrangement according to the invention is essentially characterized in that it comprises a sector carriage which can be mounted in two or more positions of the mold frame-5, in particular for making tubular joints with different joint angles on the same mold frame.

Among the main advantages of the mold arrangement according to the invention are the simplicity of its operation and operation and the efficiency of the production machine it enables, firstly, the sector carriage rotated with respect to the mold body utilized in the mold arrangement. thanks to the modular structure of the mold technology, whereby the mold arrangement of the invention is very quickly and easily modified for making pipe connections of various dimensions and shapes. The mold body included in the mold arrangement of the invention is sufficiently large to accommodate all mold housings required for pipe connections other than diameters and connecting angles to form the appearance of the pipe pipe to be manufactured.

The invention also makes it possible to machine-form mold materials. low volume, which significantly reduces production * *, ·· *. expensive input. When utilizing the mold arrangement * «of the invention, the mold raw material for a product family of, for example, seven products is about 6040 kilograms, while the corresponding consumption for standard molds is typically about 27300 kilograms. As a result, the invention results in a significantly lower manufacturing cost per manufactured product * · · · than when using standard molds.

The conversion of the mold arrangement according to the invention to various products is particularly rapid, e.g., by hydraulic control mechanisms for moving each mold sleeve and the core connected to the sector carriage to the fixed and pivotable end of the mold body. . In this case, the mold housing forming the external shape of the pipe joint 5 to be manufactured is interchangeable with the mold frame open while the sector carriage is adjusted to the desired joint angle with respect to the mold frame.

Other advantageous applications of the mold arrangement according to the invention are disclosed in the dependent claims.

In the following description, the invention is illustrated in detail with reference to the accompanying drawings, in which Figure 1 shows a top view of a mold body with a mold arrangement according to the invention, * in Fig. 2. *. is shown in the mold system according to the invention. • · · · · · ·, · · · · · ·, · · · · · ·, · · · · · ·, · the first connection group of the pipe to be injected, · · · · · Figure 3 • · 30 further shows an exemplary cross-section. ·. * Cutting at the other * ·· joint of the pipe to be manufactured.

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FIELD OF THE INVENTION The invention relates to a mold arrangement for injection molding, particularly for the manufacture of at least 4,1190§1 partially interchangeable molds for the manufacture of plastic tubular joints or the like of different dimensions and / or shapes. The mold arrangement includes a sector carriage 3 which can be placed, for example, as shown in Fig. 1, in the mold body 1 in two or more positions 5, in particular for making tubular joints of different angles with the same mold body.

As a preferred embodiment of the mold arrangement according to the invention, the core 4 used therewith comprises a first subframe 4a to be coupled to a sector carriage 3 and a detachably connected end portions 4b for each tube size and / or connection angle.

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A further advantageous embodiment of the mold arrangement according to the invention comprises interchangeable single-mold parts 5 for joints of different sizes, such as a plug end and / or socket end, for each pipe joint to be manufactured. Specifically, with reference to Figure 2, the right-hand sectional view illustrates a socket-head forming mold 5b and a left-hand cross-section forming a stitch forming mold 5a. Figure 3, in turn, shows a cross section ***: 25 fittings with a sleeve for the pipe fitting to be manufactured. a head forming single mold part 5b.

• * ··· • · • ·

In a further preferred embodiment of the invention, the mold arrangement includes, in particular with reference to the deviation shown in Fig. 3, a second subframe 6 for engaging the ··· single mold part 5 to be attached to the fixed joint end II of the mold arrangement. .

···· ··· • · * · · ·, * Still a preferred application especially for images • · *. With reference to the mold arrangement 2 and 3, the mold arrangement comprises interchangeable mold housings 2 to be connected to a mold space T in the single or multi-part mold body 1 for different pipe sizes and / or connection angles for each pipe assembly.

In a further preferred embodiment, the center of the sector carriage 3 5 is arranged on the same axis in the mold space T

with molded housing 2 and pivotable with respect to mold body 1 preferably at an angle of 0 to 135 '(although only the adjustment range: 0 to 90 1 is shown in Figure 1). In a preferred embodiment, the position-10to of the sector carriage is arranged to be infinitely adjustable, which allows for a completely freely selectable connection angle of the pipe joint to be manufactured. According to the alternative embodiment shown in Fig. 1, it is also possible to arrange the position of the sector carriage 3 on the other hand, for example at 5, 7.5, 15 15 or 22.5 'angular adjustment α.

1 and 3, a guide arrangement 7, such as slide rails, slides and / or the like, for moving a single mold part 5 and / or a sector carriage 4 connected to a fixed II and / or pivotable connection end I of the mold body 1 connection. In this case,

· '· *: Core 4 connected to the sulfur carriage 3, pivoting coupling head I

* · · 1 · '; and / or one mold part (s) 5 of the fixed connection head II; • ·, ***. 5a / 5b is arranged to be movable by means of auxiliary power, · · · ((··, preferably hydraulic actuators.

A further preferred embodiment, particularly with reference to Fig. 2, is a mold arrangement according to the invention, partly a sector carriage 3 and partly a mold body 1. 1, to define the mold cavities 2 to be mounted in the mold space T, and the one-way · ·· ·. ** · to be mounted on its connection heads I, II. mold parts 5; 5a, 5b.

It is to be understood that the invention is not limited to the above-mentioned embodiments, but may be modified within the spirit of the invention to suit the intended uses and applications in the manner best suited to the purpose. It will be appreciated that the mold assembly parts according to the invention may be manufactured from a wide variety of materials suitable for the purpose in one or more parts, making it possible, for example, to connect all or part of the mold assembly to the other subframe used in of course, and the flow arrangements for injection molding connected to the mold arrangement can, of course, be implemented in a number of ways. In addition, in connection with the mold-15 arrangement, e.g. separate mechanical locking arrangements, such as wedge sleeves or the like, especially for positioning the core, etc.

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Claims (10)

1. A molding device for molding, which is specifically intended for the manufacture of plastic pipe joints or the like, the dimensions and / or shapes of which differ from each other, using at least partially interchangeable mold and / or core surfaces, characterized in that the molding device belongs to a molding device. sector stand (3), which can be inserted into a molding body (1) in two or more positions, in particular to manufacture pipe plugs with varying connection angles with the same molding frame. Molding device according to claim 1, characterized in that a core (4) to be used therewith comprises a first auxiliary body (4a) which can be assembled with the sector stand (3) and with the detachably adjustable tip parts (4b) for each and every one. a varying pipe size and / or connection angle of the pipe nozzle to be manufactured. 3. A molding device according to claim 1 or 2, characterized in that the same includes interchangeable: bounce mold parts (5) for each of its size e · ·: *. ..i and / or a sleeve end, of the pipe socket, which shall: · .. be manufactured. ··· • · ··· 4. Molding device according to some of the above .V. The claims 1-3, characterized in that the same applies. hears a second auxiliary body (6) for interconnecting a * · * bounce mold part (5) to be connected to · *. "The fixed terminal end (I) of the molding device. • φ« • * • · • · · 5. Molding device according to some of the above •. : claims 1-4, characterized in that the same include exchangeable molding points (2), which are to be coupled together with a molding space (T) which is in a single-piece or multi-part molded body (1). ), for each deviating pipe size and / or connection angle of a center portion of the pipe connector to be manufactured. 5 Molding device according to any of the above claims 1-5, characterized in that the center of the sector stand (3) is arranged on the same axis with the molding place (2) interconnected in the mold space (T) and reversibly in relation to the mold body (1). at angles 0 - 135 °. Molding device according to any of the above claims 1-5, characterized in that the position of the sector rack (3) is arranged to be controlled steplessly. Molding device according to any of the above claims 1-7, characterized in that it includes a control device (7), such as sliding rails, slides and / or the corresponding for moving each bouncing mold part (5) and / or with sector position • # ♦ * · "interconnected cast core (4) in connection with the mold body:. * (1) fixed and / or reversible connection end (II, I). * · · * · * A _:. · 25 * ·· · ... · 9. Molding device according to claim 8, characterized in that, with the sector stand (3): ***: the core (4) interconnected, the bounce mold part (s) (5; • · · 5a, 5b) of the reversible connection end (I) and / or the fixed connection end (II) are arranged / arranged, movable / movable by auxiliary force, preferably φ * "preferably hydraulic means. · · · · * Molding device according to any of the above claims 1-9, characterized in that its molding. : molding points (2) to be mounted in the molding space (T), • restricted partially by the sector scaffold (3) and partially by the molding stool (1), and the bouncing mold parts (5; 5a, 5b) to be mounted at its connecting ends (I, II), are single-piece hollow structures. · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · φ · ® φ φ # φ φ # · φ φ