CN2378176Y

CN2378176Y - U-shape pipe fitting injection forming die

Info

Publication number: CN2378176Y
Application number: CN 99237880
Authority: CN
Inventors: 李志良; 周景顺; 张明星; 周炳南; 陈忠
Original assignee: EFENG PRECISION MOULD Co Ltd EZHOU
Current assignee: EFENG PRECISION MOULD Co Ltd EZHOU
Priority date: 1999-06-11
Filing date: 1999-06-11
Publication date: 2000-05-17
Anticipated expiration: 2009-06-11

Abstract

The demand of plastic pipe fittings is larger and larger at present. The difficulty of producing shaping dies of U-shaped series pipe fittings is larger. The utility model provides an ideal technical proposal. A die type core is divided into two symmetrical parts. Each part of the two symmetrical parts is divided into a straight core type core and a circular arc type core. The utility model is flexibly controlled and connected. A movable die plate can move along the direction of ejection of a pipe fitting. Consequently, screwing a core and withdrawing the core are smooth. The movement interference of a mechanism can be avoided. The surface of the pipe fitting can be damaged. The utility model meets the requirement of markets, with the advantages of high productive efficiency and the propulsion of the popularization and the application of pipe fittings with high performance.

Description

U type pipe fitting injecting molding die

The utility model relates to a kind of mould of producing plastic member product.

The extraordinary pipe fitting of RPVC (as S type, U type trap) is less because of body moulding uniqueness, installing space, during injection moulding, core is when going into core and loosing core, being easy to generate mechanism kinematic interferes, molded surface easily abrades, in the die industry, be the bigger class mould of technical difficulty at home and abroad, also have only several companies few in number to have the production technology of this respect in the world at present.

The purpose of this utility model is to provide a kind of go into core smooth and easy, the no mechanism movement interference of loosing core, the no abrasive U type pipe fitting injecting molding die in plastic surface.

The technical solution of the utility model is: a kind of U type pipe fitting injecting molding die, form by core, die cavity, template, pressing plate, guide pillar etc., it is characterized in that: core is divided into symmetrical two parts, and every part is divided into straight core and garden camber core again, its garden camber core is linked into an integrated entity by torticollis, torticollis torsion spring, torticollis pull bar, there is a connecting rod to link to each other on the torticollis pull bar, on the oil cylinder connecting plate limit pull rod is housed, limit pull rod, oil cylinder connecting plate are connected with connecting rod, and device has the moving platen that can eject the direction activity along plastic on the dynamic model die cavity.

The utlity model has following characteristics:

1, the shared power source of core two parts.

2, camber core in garden is flexible the connection, can make full use of the interior female surface of profiled member when loosing core as loosing core derivation face, belongs to Self Adaptive Control, does not damage plastic.

3, go into be reset to die cavity after core action is finished outside die cavity, avoided the rigidity of die cavity to interfere.

Fig. 1 is the utility model front view.

Fig. 2 is the utility model side view.

In the diagram, the 1st, limit pull rod, the 2nd, oil cylinder piston bar, the 3rd, connecting rod, the 4th, core slide block, the 5th, straight core, the 6th, straight core pressing plate, the 7th, movable die cavity slide block, the 8th, movable die cavity pressing plate, the 9th, movable die cavity, the 10th, elasticity fore-set, the 11st, torticollis pull bar, the 12nd, torticollis torsion spring, the 13rd, torticollis, the 14th, cylinder bracket, the 15th, top clamping plate, the 16th, solid plate, the 17th, moving platen, the 18th, cover half die cavity, the 19th, dynamic model die cavity, the 20th, gripper shoe, the 21st, assembly key, the 22nd, balanced support post, the 23rd, the joint that automatically resets, the 24th, guide pillar, the 25th, release link, the 26th, push rod, the 27th, ejector pin retaining plate, the 28th, push pedal, the 29th, cushion block, the 30th, Bottom clamp plate.Its operation principle is: die sinking → hydraulic oil cylinder driving duplex core slide block is extracted the core of two straight cores → separate extractions → goods with the controlled flexible garden camber core that connects of straight core to eject → core plate release → directly out and is gone into core motion → garden camber core and be bonded into U type rigid attachment body → core plate and reset → matched moulds.

Claims

A kind of U type pipe fitting injecting molding die, form by core, die cavity, template, pressing plate, guide pillar etc., it is characterized in that: core is divided into straight core and garden camber core, its garden camber core is linked into an integrated entity by torticollis, torticollis torsion spring, torticollis pull bar, there is a connecting rod to link to each other on the torticollis pull bar, spacing connecting rod is housed on the oil cylinder connecting plate, and limit pull rod, oil cylinder connecting plate are connected with connecting rod, and device has the moving platen that can eject the direction activity along plastic on the dynamic model die cavity.