CN2540268Y

CN2540268Y - Expansible core loose die

Info

Publication number: CN2540268Y
Application number: CN 02220913
Authority: CN
Inventors: 熊吉如
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-05-31
Filing date: 2002-05-31
Publication date: 2003-03-19
Anticipated expiration: 2012-05-31

Abstract

The utility model relates to an expandable knockout core mould, for producing hollow pipe and sheet. The utility model comprises a mould and a core, which is characterized in that the mould is composed of at least two blocks integrally, with one or more core holes at middle, the core hole is inserted with the core, the slim between the outer surfaces of the blocks of outer wall of the mould is arranged with an extension sheet elastic element or covered by an extension flexible muffle, the core holes are arranged consistently with the section of the core, in ellipse or polygon shape with round angle.

Description

The mould but harmomegathus is loosed core

Technical field

What mould related to but the utility model harmomegathus is loosed core is a kind of mould of loosing core of producing hollow tubular product, hollow-structure sheets.

Background technology

Produce hollow tubular product, hollow-structure sheets such as concrete drain tile, glass reinforced plastic pipe, building cored slab etc. at present; the core that adopts mostly is the core that integral type core or polylith amalgamation become integral type, by huge pulling force and folder power core is extracted out from product during the demoulding.Divide mould to combine the core of one by different angles by polylith, make up during production, break the whole up into parts during the demoulding, respectively the sub-module block-by-block is taken out both time-consumingly, accuracy is poor again, has restricted the production efficiency and the quality of production of similar products.

Summary of the invention

But the utility model provides a kind of harmomegathus mould of loosing core at above-mentioned weak point, have that dress is inserted with core rod in the core rod hole of die body, die body, adopt the different cooperation positions of adjustment core rod to regulate the die body radial dimension, be convenient to mould and extract out from the workpiece that is shaped after hardening with the core rod hole.

Mould is to take following mode to realize but harmomegathus is loosed core: mould structure comprises die body, core rod but harmomegathus is loosed core, die body is made up of two or polylith sub-module, sub-module is enclosed one, middle one or more core rods hole that forms, core rod is fitted with core rod in the hole, core rod can rotate in the core rod hole, and the piece of outer surface is provided with scalable sheet elastomer between the die body outer wall sub-module, or adopts the telescopic elastic sleeve covers.

The core rod hole is consistent with core rod section spread geometry, but ovalize or fillet polygon, when the core rod hole consistent with core rod section arrangement form, at this moment, sub-module in the mould is closed form owing to divide the elastomer effect of die body piece setting to be close to die body mutually, otherwise arrange when opposite with the section radial dimension length of core rod when the core rod hole, sub-module in the mould is pushed by core rod, because the sub-module piece is provided with the elastomer sub-module and leaves die body mutually and be the unlatching shape, this moment mould radial dimension maximum.

When being opening between the sub-module of mould, mould radially maximum this state of cross dimensions is the mold work state, can carry out the workpiece of mold outer surface pours into a mould or lays, work such as spraying are as making moulding article, make hollow tube, work such as hollow-structure sheets, this moment, work piece inner surface and mold outer surface were close together, after the workpiece material sclerosis, adjust the core rod state, radially cross dimensions is hour to mould, be in the mould between the sub-module because elastomer contracts when being close to mutual closure state, this moment, die surface separated with the workpiece lumen of having hardened, and can easily mould be extracted out from workpiece lumen.Mould can be regulated mould radial dimension size by adjusting core rod and core rod hole relative position but harmomegathus is loosed core, size minimum when the core rod closed form and between the sub-module, be radially cross dimensions minimum of mould, can easily entire die be extracted out that the utility model mould project organization is reasonable, simple, easy to use from the back workpiece cavity that hardens, the efficient height, can improve the quality of products, improve yield rate, reduce production costs greatly, applied widely, easy to utilize.

Description of drawings

The utility model is described in further detail below with reference to accompanying drawing.

But Fig. 1 a is a harmomegathus the loose core rectangular mould schematic diagram of mould.

But Fig. 1 b is a harmomegathus the loose core circular die schematic diagram of mould.

But Fig. 1 c is a harmomegathus the loose core square dies schematic diagram of mould.

But Fig. 1 d is a harmomegathus the loose core polygon mould schematic diagram of mould.

The loose core die body of mould constitutes schematic diagram by the polylith sub-module but Fig. 2 is a harmomegathus.

But Fig. 3 a is a harmomegathus the loose core square dies closure state schematic diagram of mould.

The loose core square dies of mould is opened working state schematic representation but Fig. 3 b is a harmomegathus.

The loose core circular die of mould is opened working state schematic representation but Fig. 4 a is a harmomegathus.

The loose core circular die closure of mould is removed the mould view but Fig. 4 b is a harmomegathus.

The specific embodiment

Comprise die body, core rod 2 with reference to the accompanying drawing harmomegathus mould structure of loosing core, die body is made up of two sub-modules 1 or polylith sub-module.In the middle of being combined into one, sub-module 1 forms core rod hole 3, be fitted with core rod 2 in the core rod hole, core rod 2 can rotate in core rod hole 3, the piece of appearance is provided with scalable sheet elastomer 4 or adopts the telescopic elastic sleeve covers between the die body outer wall sub-module, and sheet elastomer or spring-backed quill tightly are placed in sub-module 2 outer surfaces that are closure state.Elastomer or spring-backed quill can adopt rubber or elasticity of plastics material to constitute.

Can make multiple shape such as rectangle (seeing accompanying drawing 1a) with reference to accompanying drawing 1a, 1b, 1c, the 1d harmomegathus die shape of loosing core, circular (seeing accompanying drawing 1b), square (seeing accompanying drawing 1c), polygon (seeing accompanying drawing 1d), can be used for molded difform hollow tubular product, the hollow-structure sheets done.

But can form core rod hole 3 and the consistent ovalize of core rod 2 section spread geometries by two sub-modules 1 (seeing accompanying drawing 1a-1d) with reference to the loose core die body of mould of accompanying drawing harmomegathus, die body also can be made of (seeing accompanying drawing 2) core rod hole 8 and core rod 7 polylith sub-module 6, and section configuration is arranged the consistent fillet polygon that is.

Pushed by core rod 2 because sub-module piece when being provided with elastomer 4 states with reference to the sub-module 1 of accompanying drawing 4a in but harmomegathus is loosed core mould, mould radial dimension maximum, this moment the mold work state, can carry out the workpiece cast of mold outer surface, lay, work such as spraying, this moment, workpiece 5 inner surfaces and mould sub-module 1 outer surface were close together, after the sclerosis of workpiece 5 materials, adjust core rod 2 states, radially cross dimensions is hour to mould, be between the sub-module 1 because elastic shrinkage is close to into mutual closure state, thus this moment die surface with workpiece 5 inner chambers that hardened between separate and form a fixed gap 9 and can easily mould be extracted out from workpiece 5 inner chambers.

Claims

But 1, a kind of harmomegathus mould of loosing core, comprise die body, core rod, it is characterized in that die body is made up of two or polylith sub-module, sub-module is enclosed one, middle one or more core rods hole that forms, core rod is fitted with core rod in the hole, and the piece of appearance is provided with scalable sheet elastomer or adopts the telescopic elastic sleeve covers between the die body outer wall sub-module.
2, but the harmomegathus according to claim 1 mould of loosing core is characterized in that the core rod hole is consistent with core rod section spread geometry, ovalize or fillet polygon.
But 3, the harmomegathus according to claim 1 mould of loosing core is characterized in that elastomer or spring-backed quill adopt rubber or plastic material to constitute.