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Calibration device

A technology of sizing and sizing holes, applied in the field of sizing devices, can solve problems such as expensive assembly, accumulation of machining errors, strong deviation of sector brackets, etc.

Inactive Publication Date: 2009-08-19
KRAUSSMAFFEI TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this structure requires a long and therefore expensive assembly
In addition, unavoidable manufacturing tolerances accumulate, which can lead to impermissibly strong shifts in the position of the segment supports

Method used

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Embodiment Construction

[0034] The overall structure of a device for producing plastic pipes can be found in DE 198 43 340 C2. This document shows an already adjustable sizing device. In this case, the adjustable sizing device is the core part of a tube extrusion plant with the possibility of changing dimensions. It assumes the forming task of a standard sizing, but can be infinitely adjusted via the diameter range given by the structural conditions.

[0035] This adjustment is thus achieved in that the surface which rests on the tube is formed by a large number of individual segments. exist figure 1 The segment pieces 18 shown in have here along their inside, ie in the circumferential direction of the tube, a rounding which corresponds to the largest possible tube outer diameter and which forms the individual segment segments. These segments comprise individual laminations, which are spaced apart from one another as seen in the production direction, but are arranged closely next to each other. T...

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Abstract

The invention relates to a sizing device for sizing extruded continuous profiles, in particular pipes, with a sizing hole (11), which consists of a plurality of circumferentially arranged segment parts (18), The inner surfaces thereof together form a sizing hole (11), wherein each segment piece (18) respectively comprises a segment body (50), the segment body (50) is substantially circularly accommodated in a housing in this way. In the body, the axially adjacent segment pieces (18) are partially overlapped in the circumferential direction in order to form the sizing holes (11), and each segment body (50) is connected to at least one actuating device (20) , whereby each segment body (50) is fixed in the casing, and each segment body (50) can be adjusted in the radial direction. In order to facilitate the machining of the segment bodies, it is suggested that the segment bodies (50) are each integrally made from a workpiece, and a machined finish for the sizing hole (11) is formed inside the segment body (50). The profile, or the insert for forming the profile, is accommodated on or in the segment body.

Description

technical field [0001] The invention relates to a sizing device. Background technique [0002] The sizing device is used, for example, for sizing extruded continuous profiles, in particular pipes. In this case, a plastic melt is first prepared in an extruder, which is processed in a shape-defining manner through a nozzle. In order to guarantee the desired dimensions of the continuous profile, after forming the continuous profile is passed through a sizing device in which the continuous profile is dimensionally precisely formed. [0003] In the manufacture of plastic pipes until recently it was necessary to use different sizing devices for different wall thicknesses or outer diameters. For this purpose, the corresponding components must be replaced, which requires a shutdown of the machine and thus leads to downtime. [0004] It is therefore proposed in DE 198 43 340 C2 to use an adjustable sizing device for different pipe sizes. This sizing device comprises, for example,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C47/90B29C48/90
CPCB29C47/0023B29C47/92B29C47/903B29C48/09B29C48/903B29C48/908
Inventor H·施蒂格利茨A·阿尔特曼
Owner KRAUSSMAFFEI TECH GMBH
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