CN2191074Y

CN2191074Y - Composite pressurized screw press

Info

Publication number: CN2191074Y
Application number: CN 94200935
Authority: CN
Inventors: 尚国柱; 郭全林
Original assignee: TANGSHAN CITY FRACTORY SPECIAL EQUIPMENT FACTORY
Current assignee: TANGSHAN CITY FRACTORY SPECIAL EQUIPMENT FACTORY
Priority date: 1994-01-01
Filing date: 1994-01-01
Publication date: 1995-03-08
Anticipated expiration: 2004-01-01

Abstract

The utility model is mainly used for shaping a body in fire-resistant material industry, manufacture of building material industry and ceramic industry. An upper punch (1) is connected with a driving mechanism to be controlled by external force. A lower punch (2) is fixed on a frame (6). A mould table (4) positioned between the upper punch and the lower punch is connected with a hydraulic mechanism. A mould (5) is fixed on the mould table (4). A lower mould plate (3) is transversely positioned in the mould (5). The minimum diameter of a hole which is formed by the mould and the mould table is less than the diameter of the lower mould plate. The utility model comprises a prepressing device, a dual-surface pressure device and a demoulding device. The utility model has the advantages of simple structure, convenient demoulding, and high blow efficiency. The quality of the inner part of a body can be ensured.

Description

Composite pressurized screw press

The utility model relates to a kind of forming machine equipment, and it is mainly used in the blank forming of refractory material, building materials and ceramic industry.

At present, domestic refractory material, building materials and ceramic industry use more the impingement forcing press for example fly press carry out blank forming.Use this forcing press, in the blank forming process, be easy to generate slabbing, layer density unevenness is even.In addition, during the demoulding equipment damage easily and energy loss big.

Although day this product river company has produced the friction screw press with composite pressing device,, increased structural complexity because its precharge device is two mechanisms that separate with two-sided pressue device, and can not realize the demoulding.In addition, in impact process, impact energy will act on the precharge device earlier through upper punch, and then by the precharge device impact energy is delivered to pug in the model.Like this, exist two problems: the one, relative strain will take place when hitting the precharge device in upper punch, consume the part blow energy, and the 2nd, the cold strike between the metal must cause one of them damage in repeatedly strike process.

The utility model purpose be to overcome above-mentioned weak point of the prior art and provide a kind of simple in structure, guarantee the base substrate inherent quality, be convenient in demoulding, compound adding pressure type fly press that blow efficiency is high.

The purpose of this utility model is achieved by the following technical solution: comprise upper punch (1), low punch (2), lower bolster (3), model table (4), model (5), frame (6) in the composition of the present utility model.Upper punch (1) connects with driving mechanism, is controlled by external force.Low punch (2) is fixed on the frame (6), model table between upper and lower drift (4) connects with hydraulic mechanism, model (5) is fixed on the model table (4), lower bolster (3) is horizontally placed in the model (5), and the minimum diameter in model (5) and model table (4) institute common formation hole is less than the diameter of lower bolster (3).

The utlity model has simple in structurely, can guarantee the base substrate inherent quality, the advantage that be convenient in demoulding, blow efficiency is high.

Accompanying drawing is the structural representation that the utility model is applied to produce refractory material adobe embodiment.

Below with reference to accompanying drawings, further specify the utility model by embodiment.

Upper punch (1) is by screw pair (7), frictional disk (8) control, low punch (2) is fixed on the frame (6), model (5) is fixedly connected with model table (4), model table between upper and lower drift (4) connects with hydraulic mechanism, lower bolster is horizontally placed in the model (5), all greater than the diameter of low punch (2), the longitudinal section lower inside of model (5) has inside boss in the aperture of the diameter of lower bolster (3) and model table (4).In the pug injection model (5) with constant weight, lower bolster (3) is fallen model (5) bottom and is made lower bolster (3) leave low punch (2) certain distance by hydraulic means control.Actuating friction dish (8) moves down screw pair (7), and upper punch (1) slowly enters in the model (5), utilizes the deadweight of screw pair (7), slide block (9) and upper punch (1) that pug is once gently pressed.Again to the rodless cavity injection pressure oil of two-way cylinder (10), make the piston rod drive model table (4) of oil cylinder move downward the position that has just touched low punch (2) to lower bolster, make base substrate leave upper punch (1) with first type through light pressure, remaining air in pug is overflowed, be called the stroke degassing; Inject the hydraulic oil of certain pressure then as required to the rod chamber of oil cylinder (10), model table (4) is risen, make base substrate contact upper punch (1) once more, and then once more base substrate is pressurizeed, afterwards again to the rodless cavity injection pressure oil of oil cylinder (10) through first pressing, model table (4) is moved down slightly, finish the degassing again, be called the hydraulic pressure degassing, above-mentioned twice degassing is referred to as the static pressure degassing, so far finished pre-compression functions, got ready for producing high-quality base substrate.Then, begin to impact pressurization, upper punch directly hits base substrate.Hit in the process of base substrate at upper punch (1), the frictional force of compressed base substrate and model (5) madial wall increases gradually, after its frictional force surpasses the setting pressure of overflow valve (11) in oil cylinder (10) the rod chamber oil circuit, model table (4) is operation downwards, and base substrate can only rest on original position, is equivalent to be subjected to the reaction force that lower bolster (3) makes progress, and has played the two-sided pressurization to base substrate, reduce the density contrast on the base substrate pressurized direction, improved the Forming Quality of base substrate.When base substrate when the effect of impulsive force is issued to preliminary dimension, compacting action finishing, the actuating friction dish makes screw pair drive upper punch (1) and moves up.Rodless cavity to oil cylinder (10) injects hydraulic oil, overcomes the frictional force of base substrate and model (5) die cavity, and model table (4) is moved downward, and base substrate is deviate from from model (5), has promptly finished demoulding functions, then base substrate is taken out, whole pressing process termination.

Claims

1, a kind of compound adding pressure type fly press with upper punch (1), low punch (2), lower bolster (3), model table (4), model (5), frame (6), upper punch (1) connects with driving mechanism, low punch (2) is fixed on the frame (6), model (5) is fixed on the model table (4), lower bolster (3) is horizontally placed in the model (5), it is characterized in that the diameter of the minimum diameter in model (5) and model table (4) institute common formation hole less than lower bolster (3), the model table between upper and lower drift (4) connects with hydraulic mechanism.

2, according to the described compound adding pressure type fly press of claim 1, it is characterized in that the longitudinal section lower inside of said model (5) has inside boss.