CN202591270U

CN202591270U - Pipe joint extruder

Info

Publication number: CN202591270U
Application number: CN 201220224430
Authority: CN
Inventors: 杨务滋; 胡伟民; 苏永雷
Original assignee: Changsha Joinfly M & E Equipment Manufacture Co ltd
Current assignee: Changsha Joinfly M & E Equipment Manufacture Co ltd
Priority date: 2012-05-18
Filing date: 2012-05-18
Publication date: 2012-12-12
Anticipated expiration: 2022-05-18

Abstract

The utility model belongs to pipe joint extrusion molding equipment, in particular to special equipment capable of extruding the end part of a thick-walled slender pipe fitting into a pipe joint under the cold extrusion deformation. A pipe joint extruder mainly consists of an extrusion part and a hydraulic system, wherein the extrusion part mainly consists of a die base 1, an unloading die 2, a die sleeve 3, three clamps 4, an unloading die 5, a positioning and pressing die 6, an extrusion die 7, a hydraulic cylinder 8 and the like and is characterized in that the three clamps 4 are placed in the inner conical surface of the die sleeve 3; the die sleeve 3 can move in the die base 1 in the axial direction; the hydraulic cylinder 8 is fixed on the integral die base 1; and the extrusion die 7 is connected with a piston rod of the hydraulic cylinder 8. The pipe joint extruder has the positive effects that with the adoption of the design of the overall die base, the centering performance of extrusion of the pipe fitting with larger height-to-diameter ratio of a deformation part at the end part is improved, and the effect of plastic instability in the molding process of the pipe fitting is effectively reduced; through the structure of the inner conical surface of the die sleeve, the pipe fitting is ensured to be simultaneously positioned and clamped, so that the operation is simple and convenient; and as the extrusion pressure is large, the steel pipe joint can be extrusion-molded at one time, and the extruded joint has strong pressure and tension resistance.

Description

A kind of pipe joint extruder

Technical field

The utility model belongs to the pipe joint extrusion formation equipment, especially under cold-pressing deformation, heavy wall slender rectangular tube end is squeezed into the special equipment of pipe joint.

Background technology

At present; General pipe joint extruder adopts open type taper die holder extrusion structure, and when pushing, metal tube is the die holder realization draw moulding of taper seat through inwall; Its advantage is simple in structure; Be fit to the extrusion modling of major diameter short tube, but owing to adopt open type conical die holder structure, the extruding slender rectangular tube is restricted.

Other has a kind of pipe fitting hydraulic pressure bulge forming machine; The mode through internal pressurization and axial afterburning feed supplement of being characterized in is pressed into mold cavity to pipe makes its moulding, therefore is fit to thin-walled straight line formation of tubes, band boss or moulding of breeches pipe spare and curve formation of tubes; But owing to adopt the internal pressure bulging, require pressure high, be unfavorable for the moulding of heavier walled fitting.

Summary of the invention

The purpose of the utility model: the weak point that overcomes existing extruder; Provide a kind of processing cost simple in structure low pipe joint extruder; Be beneficial to the end extrusion modling of heavy wall slender rectangular tube, satisfy the requirement of pipe joints such as needs, particularly oil that hydraulic fitting produces, chemical industry, naval vessel.

The technical scheme of the utility model is: the pipe joint extruder mainly is made up of crimping section and hydraulic system; Wherein crimping section is as shown in Figure 1; Mainly be made up of die holder 1, mould unloading 2, die sleeve 3, jig 4, mould unloading 5, location pressure die 6, extrusion die 7, hydraulic cylinder 8 etc., it is characterized in that: three jigs 4 are placed in the inner conical surface of die sleeve 3, die sleeve 3 motion vertically in die holder 1; Hydraulic cylinder 8 is fixed on the all-in-one-piece die holder 1, and extrusion die 7 links to each other with the piston rod of hydraulic cylinder 8.

Jig 4 is put into the inner conical surface of die sleeve 3, be placed on pipe fitting to location pressure die 6 and be extruded end, the piston of hydraulic cylinder 8 drives extrusion die 7 motions to left movement, and is with the workpiece location and clamp, as shown in Figure 2.Return the piston of hydraulic cylinder 8, take out location pressure die 6, the piston of hydraulic cylinder 8 drives extrusion die 7 motions once more to left movement, under responsive to axial force, with the pipe fitting extrusion modling, realizes the extruding of pipe joint thus.

Advantage of the utility model and good effect demonstrate fully into: owing to adopt the design of monoblock type die holder, for the extruding of the bigger pipe fitting of end crushed element ratio of height to diameter, improved the pipe fitting extruding to neutrality; Effectively reduce the influence of plastic instability in the formation of tubes process, the inner conical surface structure of die sleeve guarantees the location of pipe fitting and clamp simultaneously to accomplish, and is easy and simple to handle; Safe and reliable; Alleviated labour intensity, because of its extruding force is big, all extrusion modlings of ability of coupling; The smooth fineness of joint overcoat after the extruding, the resistance to compression resistance to tension is strong.

Description of drawings:

Fig. 1 is the extruder structural representation;

Fig. 2 is that extruder is with the tight state diagram of work piece positioning;

Fig. 3 is workpiece demoulding state diagram.

The specific embodiment:

Fig. 1 has described the pipe joint extruder and mainly has been made up of crimping section and hydraulic system; Wherein crimping section mainly is made up of die holder 1, mould unloading 2, die sleeve 3, jig 4, mould unloading 5, location pressure die 6, extrusion die 7, hydraulic cylinder 8 etc.; It is characterized in that: three jigs 4 are placed in the inner conical surface of die sleeve 3; Die sleeve 3 is motion vertically in die holder 1, and hydraulic cylinder 8 is fixed on the all-in-one-piece die holder 1, and extrusion die 7 links to each other with the piston rod of hydraulic cylinder 8.

The course of work of pipe joint extruder is following: put into the center of three jigs 4 to pipe fitting, jig 4 is put into the inner conical surface of die sleeve 3, be placed on pipe fitting to location pressure die 6 and be extruded end; The piston of hydraulic cylinder 8 is to left movement; Drive extrusion die 7 motions, with workpiece location and clamping, as shown in Figure 2.Return the piston of hydraulic cylinder 8, take out location pressure die 6, the piston of hydraulic cylinder 8 drives extrusion die 7 motions once more to left movement, under responsive to axial force, with the pipe fitting joint extrusion modling, realizes the extruding of pipe joint thus.

At this moment, return hydraulic cylinder piston, mould unloading 5 is placed on the end of jig near pipe joint, mould unloading 2 is placed on the other end of jig; As shown in Figure 3, extrusion die makes pipe fitting separate with jig to left movement; Take out mould unloading and pipe fitting, return hydraulic cylinder piston, can begin next extrusion process again.

Extruder is furnished with the mould of different size, can realize the extruding of different tube diameters pipe joint.

Claims

1. pipe joint extruder; Mainly form by crimping section and hydraulic system; Wherein crimping section mainly is made up of die holder (1), mould unloading (2), die sleeve (3), jig (4), mould unloading (5), location pressure die (6), extrusion die (7), hydraulic cylinder (8) etc.; It is characterized in that: three jigs (4) are placed in the inner conical surface of die sleeve (3); Die sleeve (3) is motion vertically in die holder (1), and hydraulic cylinder (8) is fixed on the all-in-one-piece die holder (1), and extrusion die (7) links to each other with the piston rod of hydraulic cylinder (8).

2. pipe joint extruder according to claim 1; It is characterized in that: extruding is during with the pipe joint of category feature different materials; Provide in hydraulic system under the situation of identical extruding force; Guarantee that pipe fitting steps up to satisfy simultaneously with the pipe joint plastic forming, only need the cone angle of adjustment die sleeve (3) and jig (4) to get final product.