CN2521439Y

CN2521439Y - Hinged bars upercharging mechanism

Info

Publication number: CN2521439Y
Application number: CN 02223326
Authority: CN
Inventors: 杜鼎文
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-01-22
Filing date: 2002-01-22
Publication date: 2002-11-20
Anticipated expiration: 2012-01-22

Abstract

The utility model relates to a hinge rod pressure device. A hydraulic cylinder is the actuating device, the driving hinge rods hinged with an oil cylinder and a cylinder rod are driven to rotate by the oil cylinder and the cylinder rod, thereby enabling a middle hinge rod and the front and rear hinge rods to rotate, pushing a slide board to move linearly. With the gradual decreasing of the angle of alpha, beta and phi, the thrust is gradually enhanced, and the distribution of thrust application points is adjusted by the load distribution and requirements, achieving the effect of high efficiency and low consumption, reasonable force point distribution and different satisfactions of application needs.

Description

Hinged bar upercharging mechanism

The utility model relates to a kind of Hinged bar upercharging mechanism.

Known Hinged bar upercharging mechanism is made up of cylinder drive, front and back toggle and free bearing etc., because of the big and difficult adjustment of force position distribution of skateboarding stroke weak point, power consumption of the long toggle drive of its piston motion stroke.

The purpose of this utility model provides a kind of working stroke length, efficient low-consume, force position and distributes and easily adjust and be applicable to the injection mechanism of injection molding machines such as injection machine and metal die-casting machine and the Hinged bar upercharging mechanism of clamping mechanism as required.

This Hinged bar upercharging mechanism be a kind of before, in, back toggle balancing force amplifying device adds that the transmission toggle makes the structure of auxiliary balance step-up system, it makes drive unit by oil hydraulic cylinder, thereby driving the transmission toggle hinged with it rotation respectively by oil cylinder and piston rod makes with the hinged middle toggle of transmission hinge and rotates, and before making, back toggle rotates and drives slide plate along the pull bar straight line motion, and along with α, β, reducing gradually of φ angle value and thrust is increased gradually, the distribution of thrust point is promptly determined in the position of determining slide plate and toggle articulating point by the needs of load distribution, to reach efficient low-consume, the force distributes rationally and satisfies the effect of different usage requirements.

Accompanying drawing is the structural representation of a specific embodiment of the utility model Hinged bar upercharging mechanism,

Wherein:

1, fixed plate 2, back toggle

3, axle 4, guide pin bushing

5, roller 6, piston rod attachment

7, piston rod 8, transmission toggle

9, middle toggle (colluding hinge) 10, preceding toggle

11, slide plate 12, cylinder connector

13, piston 14, oil cylinder

15, guide rail 16, pull bar

In the present embodiment, referring to accompanying drawing, with the hinged back toggle (2) of the fixed plate that is fixed in frame (1) and with the centre of the hinged preceding toggle (10) of slide plate (11) hinged in toggle (9) (claiming to collude hinge again), the mid point be installed in two centering toggles (9) on the axle (3) of intersecting is bearing in the both sides of the guide pin bushing (4) that is installed on axle (3) meta, the roller (5) that is arranged in toggle (9) outside is bearing on the guide rail (15) that is parallel to pull bar (16), and it is affixed that the pull bar (16) (being generally 2～4) that the rear end is fixed in fixed plate (1) passes the fastener of guide pin bushing on the slide plate (11) and load end; The other end and the piston rod attachment (7) of the transmission toggle (8) that the hook-shaped node on one end and the middle toggle (9) is hinged are hinged, the guide sleeve that the piston rod (6) that is fixed in piston rod attachment (7) passes guide pin bushing (4) and cylinder connector (12) middle part until with oil cylinder (14) in piston (13) affixed, hinged with the hook-shaped node of hinged its other end of transmission toggle (8) of cylinder connector (12) and middle toggle (9).

This Hinged bar upercharging mechanism can change free bearing position on the slide plates (11) according to the distribution of load and needs, promptly changes it and changes thrust point and distribution to meet usage requirement with the hinged node location of preceding toggle (10).

Referring to accompanying drawing, when oil pump enters the rod chamber of oil cylinder (14) for pressure oil, the oil cylinder rodless cavity oil return, oil pressure P moves piston rod attachment (6) and cylinder connector (12) simultaneously to axle (3) central line, transmission toggle (8) is rotated simultaneously, be that the α angle value reduces gradually, also make middle toggle (9) and preceding toggle (10) and back toggle (2) rotation, be that β, φ angle value reduce gradually, thereby promote slide plate (11) along pull bar (16) straight line motion, and make its thrust increasing along with α, β, reducing gradually of φ.

Toggle (9) [crossing axle (3) center] the center line Rotate 180 ° installation in middle toggle (9) in the accompanying drawing and transmission toggle (8) edge of this Hinged bar upercharging mechanism can realize that oil cylinder (14) cylinder connector (12) is carried out level around axle (3) center half-twist counterclockwise with piston rod (7) piston rod attachment (6) to be installed, and its each hinged joint relation is constant, the center line of piston rod (7) and mechanism kinematic central lines, at this moment, promoting slide plate (11) advances and then changes oil pump into and enter oil cylinder (14) rodless cavity and the rod chamber oil return for pressure oil, oil pressure P moves piston rod attachment (6) and cylinder connector (12) simultaneously away from axle (3) central line, transmission toggle (8) is rotated simultaneously, also make middle toggle (9) and preceding toggle (10) and back toggle (2) rotation, be that β and φ angle value slow down little gradually, thereby promote slide plate (11) along pull bar (16) straight line motion, in like manner, along with β, reducing gradually of φ and make its thrust increasing, thus on the injection mechanism of large size plastic jetting-moulding device, use realistic meaning is arranged very much because can reduce machine Vertical direction size like this.

The explanation of the utility model model machine trial effect, this Hinged bar upercharging mechanism is used for the injection mechanism of plastic-injection moulding machine, and its Oil pump electrical machinery allocating power is not for improving about 60% of similar type, and its injection stroke increases about 20%; Pressure fuel pump and flow set up to 90% of its rating value measure, when β=63 °, screw of injection pressure is 1460kgf/cm ², slide plate (11) travelling speed is 8.5M/min, its injection rate is not for improving about 1.6 times of type; During β=40 °, screw of injection pressure is 2600kgf/cm ², after this then oil pump feed pressure should be turned down to adaptive value excessive to be unlikely to supercharging; Obviously reached energy-conservation, efficient low-consume, the force rational effect that distributes.

Claims

1, a kind of Hinged bar upercharging mechanism, it is made up of drive unit, toggle etc., it is characterized in that with the hinged back toggle (2) of fixed plate (1) and with the centre of the hinged preceding toggle (10) of slide plate (11) hinged in toggle (9), the mid point of middle toggle (9) is bearing in the both sides of the guide pin bushing (4) that is installed on axle (3) meta, the roller (5) that is arranged in toggle (9) outside is bearing on the guide rail (15) that is parallel to pull bar (16), and it is affixed that the pull bar (16) that the rear end is fixed in fixed plate (1) passes the fastener of guide pin bushing on the slide plate (11) and load end; The other end and the piston rod attachment (7) of the transmission toggle (8) that the hook-shaped node on one end and the middle toggle (9) is hinged are hinged, the guide sleeve that the piston rod (6) that is fixed in piston rod attachment (7) passes guide pin bushing (4) and cylinder connector (12) until with oil cylinder (14) in piston (13) affixed; Hinged with the other end and the hook-shaped node on the middle toggle (9) of the hinged transmission toggle (8) of cylinder connector (12).

2, Hinged bar upercharging according to claim 1 mechanism is characterized in that can change the hinged node location of free bearing on the slide plates (11) and preceding toggle (10) according to the distribution of load and needs changes the distribution of thrust point to meet usage requirement.

3, Hinged bar upercharging according to claim 1 mechanism, it is characterized in that with middle toggle (9) and transmission toggle (8) along in ° installation of toggle (9) center line Rotate 180 can realize that oil cylinder (14) cylinder connector (12) is carried out level around axle (3) center half-twist counterclockwise with piston rod (7) piston rod attachment (6) to be installed to adapt to the usage requirement that requirement reduces the type of this booster body Vertical direction size.