CN2556005Y

CN2556005Y - Intenral flow path core extracting mould of centrafugal pump plastic pump casing

Info

Publication number: CN2556005Y
Application number: CN 02265394
Authority: CN
Inventors: 王永康
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-07
Filing date: 2002-07-07
Publication date: 2003-06-18
Anticipated expiration: 2012-07-07

Abstract

An internal flow path core extracting mould of centrifugal pump plastic pump casing relates to an internal mould of centrifugal pump plastic pump casing. The internal mould relates to a core mould and a side mould. The side mould is alternately formed by a fan-shaped sub-module and a sub-module with a trapeziform cambered surface. Each sub-module is divided into three layers. The width L of the internal side of the sub-module with a trapeziform cambered surface is larger than the width S o the external side. When the mould is demoulded, the core mould is firstly drew out and then the module in the middle layer of the sub-module with a trapeziform cambered surface is drew out; then two-surface two-layer module is drew out. After the sub-module with a trapeziform cambered surface is drew out, at last the three layers of the fan-shaped sub-mould are drew out in turn to reach the goal of successful demoulding and processing of centrifugal pump plastic pump casing.

Description

The inner flow passage of the centrifugal pump plastics pump case mould of loosing core

Technical field

The utility model relates to pump technology, particularly relates to the processing mold of centrifugal pump plastics pump case.

Background technology

Centrifugal pump is a kind of universal machine, uses on worker, agricultural extensively, and the pump case classical production process of centrifugal pump is to adopt metal casting, but owing to metal casting processing trouble, inner wall coarse, resistance is big, and efficient is low, and people study and use the processing of plastics notes system at present.Because the inwall of centrifugal pump pump case has waney inner flow passage, shape on each section is all inequality, if adopt the common internal mold of loosing core to process qualified plastics pump case,, thereby hindered the production of centrifugal pump plastics pump cases also owing to also do not solve at present the technology of loosing core of internal mold.

Summary of the invention

The inner flow passage that the utility model the provides a kind of centrifugal pump plastics pump case mould of loosing core, technical scheme is: the internal mold of centrifugal pump plastics pump case, it is characterized in that described internal mold is core and Bian Mo, the limit mould is made up of the alternate institute with the trapezoidal sub-module of cambered surface of fan-shaped sub-module, each sub-module is divided into three layers again, and the inboard width L of the trapezoidal sub-module of cambered surface is greater than outside width S.It constitutes the fan-shaped sub-module of limit mould and the total piece number of the trapezoidal sub-module of cambered surface is more than 4 or 4, promptly respectively is more than 2 or 2.Generally be respectively to be 3 or 4, promptly fan-shaped sub-module is 3 or 4, and the trapezoidal sub-module of cambered surface also is 3 or 4, and total is 6 or 8.Between the sub-module of limit mould and core, be shaped on link slot; Be shaped on link slot between three layers of the sub-module of limit mould, these two kinds of link slots can be T-slot or dovetail groove, and T-slot or dovetail groove match with corresponding T shape tenon or dovetail.This mould is at first extracted core out when the demoulding, extract the middle one deck in the trapezoidal sub-module of cambered surface again out, then extracts two boundary layers out, last middle level and the boundary layer of extracting fan-shaped sub-module successively out, very smooth, can take off or the machine demoulding by hand, thereby process qualified centrifugal pump plastics pump case.

Description of drawings

Fig. 1 is the inner flow passage of the utility model centrifugal pump plastics pump case mould structure schematic diagram of loosing core;

Fig. 2 is the trapezoidal sub-module A-A of a cambered surface sectional view;

Fig. 3 is the trapezoidal sub-module schematic diagram of cambered surface;

Fig. 4 is the trapezoidal sub-module B-B of a cambered surface sectional view.

The specific embodiment

The inner flow passage that the utility model discloses a kind of centrifugal pump plastics pump case mould of loosing core, promptly make the internal mold of plastics pump case, main feature is that internal mold is divided into core 1 and Bian Mo, the limit mould is to enter inner flow passage, for the mould of injection moulding pump case is taken off, so the limit mould is cut apart some, the shape of cutting apart as shown in Figure 1, form by fan-

shaped sub-module

2 and 3 two kinds of alternate institutes of the trapezoidal sub-module of cambered surface, during the demoulding after taking out core 1, take out the trapezoidal sub-module 3 of cambered surface again, because of the outside is a pump case, must inwardly take out, but since the pump case inner flow passage similar in appearance to tubulose, the monoblock sub-module can not take off, so each sub-module (comprising the trapezoidal sub-module 3 of fan-shaped sub-module 2 and cambered surface) is divided into three layers again, as Fig. 2, shown in Figure 4, be middle level 3-2 and boundary layer 3-1,3-3 was because both inwardly took out, and the inboard width L of the trapezoidal sub-module 3 of cambered surface is greater than outside width S.It is easy to want the demoulding, and constituting the fan-shaped sub-module 2 of limit mould and the total piece number of the trapezoidal sub-module 3 of cambered surface is more than 4 or 4, promptly respectively is more than 2 or 2, is good respectively to be 3 or 4 generally, respectively is 3 as shown in Figure 1.For each module is fixed, so between the

sub-module

2,3 of limit mould and core 1, be shaped on link slot 4, T-slot or dovetail groove.Cooperate between three layers of the

sub-module

2,3 of limit mould equally, thereby be shaped on link slot 5, link slot 5 is dovetail groove or T-slot, as Fig. 2, shown in Figure 4.

Claims

1, the inner flow passage of the centrifugal pump plastics pump case mould of loosing core, it is the internal mold of centrifugal pump plastics pump case, it is characterized in that described internal mold is core (1) and limit mould, the limit mould is made up of the alternate institute with the trapezoidal sub-module of cambered surface (3) of fan-shaped sub-module (2), each sub-module (2,3) is divided into three layers again, and the inboard width (L) of the trapezoidal sub-module of cambered surface (3) is greater than outside width (S).

2, the inner flow passage of the centrifugal pump plastics pump case as claimed in claim 1 mould of loosing core, the total piece number that it is characterized in that constituting trapezoidal minute of the fan-shaped sub-module (2) of limit mould and cambered surface template (3) is more than 4 or 4.

3, the inner flow passage of the centrifugal pump plastics pump case as claimed in claim 2 mould of loosing core is characterized in that fan-shaped sub-module (2) and the trapezoidal sub-module of cambered surface (3) are respectively is 3 or 4.

4, the inner flow passage of the centrifugal pump plastics pump case as claimed in claim 1 mould of loosing core is characterized in that being shaped on link slot (4) between the sub-module (2,3) of limit mould and the core (1).

5, the inner flow passage of the centrifugal pump plastics pump case as claimed in claim 1 mould of loosing core is characterized in that being shaped on link slot (5) between three layers of sub-module (2,3) of limit mould.

6, as the inner flow passage of claim 4 or the 5 described centrifugal pump plastics pump cases mould of loosing core, it is characterized in that link slot (4,5) is T-slot or dovetail groove.