CN202318834U

CN202318834U - Novel hydraulic expander

Info

Publication number: CN202318834U
Application number: CN2011204635142U
Authority: CN
Inventors: 叶廷璧
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-06
Filing date: 2011-11-06
Publication date: 2012-07-11
Anticipated expiration: 2021-11-06

Abstract

The utility model relates to a novel hydraulic expander which comprises an oil cylinder body, an oil cylinder piston body, an oblique expanding block and a mold locking pull rod. With the expander, the oblique expanding block is expanded in a matched conical surface by using hydraulic thrust according to the conical surface principle, elastic deformation is forced to produce between the inner circular arc surface of the oblique expanding block and the outer circular arc surface of the mold locking pull rod so as to generate clasp force, toothless cohesion is realized and the mold locking pull rod is locked.

Description

A kind of novel hydraulic expanding tense machine

Affiliated technical field

The utility model relates to a kind of novel hydraulic expanding tense machine in the hydraulic pressure locked mode part of injection mo(u)lding machinery and die cast machinery.

Background technology

Traditional obvolvent device that needs could be realized the hydraulic lock mold mechanism of high-voltage lock mould earlier to the obvolvent of locked mode pull bar and after holding tightly; The obvolvent principle of its obvolvent device: the ring-like alveolus obvolvent that a kind of obvolvent device of band type tooth is corresponding with the locked mode pull bar also makes tooth and alveolus locking, thereby makes obvolvent device and locked mode pull bar reach locking state.To align the tooth position earlier before the obvolvent device of this band type tooth and the obvolvent of locked mode pull bar; Not only need consuming time to the tooth position; Realize that accurate contraposition also needs complicated controlling organization; Repeatedly the obvolvent meeting occur on the obvolvent device with the locked mode pull bar on the mechanical wear of tooth, the locked mode pull bar tooth of getting on the bus can reduce the intensity of pull bar.

Summary of the invention

The utility model technical problem to be solved: a kind of novel hydraulic expanding tense machine is provided; This expanding tense machine is according to conical surface principle; Adopt hydraulic thrust to make the swelling skewback bloated more tight more in cooperating the conical surface; Thereby force to produce strain between the periphery of inner arc surface and locked mode pull bar of swelling skewback and produce the power of holding tightly, realize that the anodontia obvolvent also locks the locked mode pull bar.

The utility model solves the technical scheme that its technical problem adopts: a kind of novel hydraulic expanding tense machine, and it comprises cylinder body, oil cylinder piston body, swelling skewback, locked mode pull bar; One side of cylinder body inner chamber is provided with the inner conical surface structure; The swelling skewback have the male cone (strobilus masculinus) structure and can with the inner conical surface respective outer side edges of cylinder body; The oil cylinder piston body is contained in cylinder body inner chamber opposite side and can in cylinder body, moves around; Being provided with screens between swelling skewback and the oil cylinder piston body is connected; Making the oil cylinder piston body can drive the swelling skewback through this screens connection moves around in cylinder body; The swelling skewback be provided with the space that the radial direction of swelling skewback toward the oil cylinder piston body moves during screens between the oil cylinder piston body is connected; The swelling skewback can cooperate with locked mode pull bar periphery and hold tightly to being provided with the feasible inner arc surface when swelling skewback swelling skewback when receiving the pressure of cylinder body inner conical surface of cutting seam its outer surface from its inner arc surface; The swelling skewback produces the gap because thereby self elastic reaction makes the swelling skewback can make to the radial direction distending of oil cylinder piston body between the periphery of inner arc surface and locked mode pull bar of swelling skewback under free state, the locked mode pull bar is contained in the center of whole expanding tense machine; Thereby, the oil cylinder piston body make the inner arc surface of swelling skewback and the periphery of locked mode pull bar produce holding tightly of huge strain realization swelling skewback and locked mode pull bar toward the inner conical surface side shifting of cylinder body and under through interior male cone (strobilus masculinus) effect when promoting the swelling skewback; Thereby oppositely move between the periphery that draws back the inner arc surface that makes the swelling skewback can make the swelling skewback behind the swelling skewback under the elastic reaction of swelling skewback at himself and locked mode pull bar when the oil cylinder piston body and to produce the gap, accomplish the disengaging obvolvent to the radial direction distending of oil cylinder piston body.

The beneficial effect of the utility model:

1. because obvolvent is to belong to anodontia swelling obvolvent, need not to adjust the obvolvent position, need not to detect the obvolvent position, the time of these actions can directly be cancelled, and can effectively shorten the obvolvent cycle, improves the production efficiency of machine; Because need not to do any accurate obvolvent Position Control, the requirement of controlling system is decreased, the complete machine cost reduces, and the stability of complete machine and reliability improve.

2. the obvolvent position of locked mode pull bar need not the car tooth, and effectively the tension lifting surface area is maximum, can bear bigger clamp force, with the pull bar diameter of tonnage machine can design littler, reduce machine cost; Do not have stress to concentrate, pull bar is stressed evenly, improves the service life of pull bar.

Description of drawings

Fig. 1 is the front view of the utility model.

Fig. 2 is the A-A cutaway view of Fig. 1.

(1)-cylinder body, (2)-oil cylinder piston body, (3)-swelling skewback, (4)-locked mode pull bar among the figure.

The specific embodiment

Like Fig. 1, shown in Figure 2; A kind of novel hydraulic expanding tense machine; It comprises cylinder body (1), oil cylinder piston body (2), swelling skewback (3), locked mode pull bar (4); One side of described cylinder body (1) inner chamber is provided with the inner conical surface structure; Described swelling skewback (3) have the male cone (strobilus masculinus) structure and can with the inner conical surface respective outer side edges of cylinder body (1); Described oil cylinder piston body (2) is contained in cylinder body (1) inner chamber opposite side and can in cylinder body (1), moves around; Being provided with screens between described swelling skewback (3) and the oil cylinder piston body (2) is connected; Making oil cylinder piston body (2) can drive swelling skewback (3) through this screens connection moves around in cylinder body (1); Described swelling skewback (3) be provided with the space that the radial direction of swelling skewback (3) toward oil cylinder piston body (2) moves during screens between the oil cylinder piston body (2) is connected; Described swelling skewback (3) makes the inner arc surface when swelling skewback (3) swelling skewback (3) when receiving the pressure of cylinder body (1) inner conical surface to cooperate with locked mode pull bar (4) periphery and to hold tightly from its inner arc surface to being provided with cutting seam its outer surface, described swelling skewback (3) under free state owing to self elastic reaction make swelling skewback (3) can be to oil cylinder piston body (2) thus the radial direction distending make between the periphery of inner arc surface and locked mode pull bar (4) of swelling skewback (3) and produce the gap, described locked mode pull bar (4) is contained in the center of whole expanding tense machine.

Claims

1. novel hydraulic expanding tense machine; It is characterized in that: it comprises cylinder body (1), oil cylinder piston body (2), swelling skewback (3), locked mode pull bar (4); One side of described cylinder body (1) inner chamber is provided with the inner conical surface structure; Described swelling skewback (3) have the male cone (strobilus masculinus) structure and can with the inner conical surface respective outer side edges of cylinder body (1); Described oil cylinder piston body (2) is contained in cylinder body (1) inner chamber opposite side and can in cylinder body (1), moves around; Being provided with screens between described swelling skewback (3) and the oil cylinder piston body (2) is connected; Making oil cylinder piston body (2) can drive swelling skewback (3) through this screens connection moves around in cylinder body (1); Described swelling skewback (3) be provided with the space that the radial direction of swelling skewback (3) toward oil cylinder piston body (2) moves during screens between the oil cylinder piston body (2) is connected; Described swelling skewback (3) can cooperate with locked mode pull bar (4) periphery and hold tightly to being provided with the feasible inner arc surface when swelling skewback (3) swelling skewback (3) when receiving the pressure of cylinder body (1) inner conical surface of cutting seam its outer surface from its inner arc surface; Described swelling skewback (3) under free state since self elastic reaction make swelling skewback (3) can be to oil cylinder piston body (2) thus the radial direction distending make between the periphery of inner arc surface and locked mode pull bar (4) of swelling skewback (3) and produce the gap, described locked mode pull bar (4) is contained in the center of whole expanding tense machine.