CN2319145Y

CN2319145Y - Appts. for rolling variable section workpiece with rolling gap periodicly changed

Info

Publication number: CN2319145Y
Application number: CN 97243438
Authority: CN
Inventors: 史伟志; 高永生
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-10-24
Filing date: 1997-10-24
Publication date: 1999-05-19
Anticipated expiration: 2007-10-24

Abstract

The utility model relates to an apparatus with a periodically variational roll gap for rolling a variable-section workpiece. In the utility model, a cylinder body of a main hydraulic cylinder is fixed to a machine frame, a cylinder rod is connected with a pressing block, and a hydraulic copying valve is fixed to the machine frame; a valve rod is hinged with one end of a lever, and a fulcrum of the lever is fixed to the machine frame; a mold disk is connected with the pressing block by a bearing, and the mould disk is hinged with the other end of the lever. An electric motor drives the mold disk by a chain wheel and a chain, the rotation of the mold controls the hydraulic copying valve by the lever to make a valve core of the main hydraulic cylinder move, an upper roller is periodically made to move reciprocating mode, and the roll gap is made to change, so a workpiece is deformed. A ratchet wheel is used for adjusting the relationship between the rotational speed of the mold disk and the displacement of the workpiece.

Description

The device of the periodically variable rolling changeable section workpiece of a kind of roll gap

The utility model is a processing variable cross-section workpiece, as the device of workpiece such as automobile changeable section plate spring.

At present, forging roll is a capital equipment of producing the variable cross-section workpiece, and the roll of forging roll is the mould roller, and the shape of soon rolling workpiece is embodied on the roll, with the rotation of forging roll roll, makes the roller gap cyclically-varying can make workpiece deformation again and again.Roll for forging roll is the mould roller, during work, the wearing and tearing of roll mainly concentrate on bears in roll-force maximum a bit of, and in remaining part, the roll-force of bearing is less, and it is also very little to wear and tear, because this uneven wear of mould roller, make that the frequency of roll roll change and reparation is higher, production cost is higher, and this is very serious problem during forging roll is produced.

The purpose of this utility model is to overcome the deficiency of forging roll technology, proposes a kind of device with the periodically variable rolling changeable section workpiece of mechanical hydraulic servo system control roll gap, and during work, roll moves back and forth, and the roll gap cycle changes, and reaches the purpose that makes workpiece deformation.This device adopts flat roll, makes roll wear even, has both reduced the number of times of roll change, has improved the operating rate of milling train, has reduced the roller consumption again, has reduced production cost.

The purpose of this utility model realizes in the following way:

This installs by main hydraulic cylinder (1), briquetting (2), and topping roll (3), bottom roll (4), material folding jaw (6), feeding trolley (7), hydraulic tracing control valve (18), lever (19), mould disks (17), sprocket wheel (14) and (15), motor (13) constitutes.Wherein the cylinder body of main hydraulic cylinder (1) is fixed on the frame (21), the cylinder bar is connected with briquetting (2), briquetting (2) is connected with topping roll bearing block (12), hydraulic tracing control valve (18) is fixed on the frame (21), one end of valve rod and lever (19) is hinged, two valve ports are connected with two hydraulic fluid ports of main hydraulic cylinder (1) respectively, the fulcrum of lever (19) is fixed on the frame (21), mould disks (17) is connected with briquetting (2) by bearing, and it is hinged with an end of lever (19), the output shaft of sprocket wheel (1 5) is connected with mould disks (17), ratchet (16) is installed on this output shaft, motor (13) is fixed on the briquetting (2), and its output shaft is connected with sprocket wheel (14), and is connected with sprocket wheel (15) by chain (20).

Below in conjunction with drawings and Examples the utility model is done detailed description:

Fig. 1 is a structure chart of the present utility model, also is an embodiment.

In the drawings, (1) main hydraulic cylinder; (2) briquetting; (3) topping roll; (4) bottom roll; (5) workpiece; (6) material folding jaw; (7) feeding trolley; (10) steel wire rope; (11) bottom roll bearing block; (12) topping roll bearing block; (13) motor; (14) sprocket wheel; (15) sprocket wheel; (16) ratchet; (17) mould disks; (18) hydraulic tracing control valve; (19) lever; (20) chain; (21) frame.

Embodiment:

Fig. 1 is two roller systems, bottom roll (4) places the window bottom of frame (21), the adjustment of topping roll (3) realizes by main hydraulic cylinder (1) and briquetting (2), during work, motor (13) is by sprocket wheel (14) and (15) and chain (20) drive mould disks (17) rotation, the rotation of mould disks makes the spool of hydraulic tracing control valve (18) produce the hydraulic fluid flow rate that main hydraulic cylinder (1) is controlled in certain displacement by lever (19), make briquetting (2) and topping roll (3) produce certain displacement, mould disks (17) revolution moves a week, topping roll produces periodic the reciprocating motion once, because the axis of bottom roll (4) is fixed, roll gap between top and bottom rolls also will produce cyclically-varying, when roll gap is big, feeding trolley (7) reach, workpiece (5) on the clamping jaw (6) is sent into two roll shop buildings, when roll gap diminishes, can realize distortion to workpiece, ratchet (16) couples together by steel wire rope (10) and feeding trolley (7), when milling train is in as-rolled condition, workpiece (5) promotes feeding trolley (7) and moves backward, and by steel wire rope (10) drive ratchet (16) rotation, if the velocity of rotation of sprocket wheel (15) is during greater than the rotating speed of ratchet (16), mould disks (19) is driven by sprocket wheel (15), if the rotating speed of sprocket wheel (15) is less than the rotating speed of ratchet (16), steel wire rope (10) drags mould disks (17) by ratchet (16) and rotates, so that can make the displacement of roller gap and workpiece (5) keep strict functional relation, eliminate the advancing slip influence of workpiece when rolling to the workpiece size precision.

Mould disks (17) can be changed, and to different rolled pieces, selects different mould disks for use.

Compared with prior art, the utlity model has following advantages:

1. utilize the rotation by the mould disks of driven by motor, by lever control hydraulic tracing control valve, supply to main hydraulic cylinder Oil is controlled the reciprocating motion of roll, has replaced the effect of the mould roller of forging roll, can replace mould with plain-barreled roll Roller makes workpiece deformation, so that roll wear is even, has reduced the roller consumption;

2. utilize the movement of workpiece to make ratchet rotate to mate and adjust the rotating speed of mould disks and the workpiece displacement between Concern, can accurately determine the strict functional relation of roller gap and workpiece displacement, workpiece when rolling to eliminate Advancing slip impact to workpiece size has improved the rolling quality of upper part, and these characteristics are that forging roll is not available;

3. the length of the rolling workpiece of forging roll is subjected to the restriction of its roller diameter, generally can only be rolling than short workpiece, And the utility model is adjusted diameter and the rotating speed of mould disks, can adjust its mill length.

Claims

1. the device of the periodically variable rolling changeable section workpiece of roll gap, by main hydraulic cylinder (1), briquetting (2), topping roll (3), bottom roll (4), material folding jaw (6), feeding trolley (7), hydraulic tracing control valve (18), lever (19), mould disks (17), sprocket wheel (14) and (15), motor (13) constitutes, it is characterized in that: the cylinder body of main hydraulic cylinder (1) is fixed on the frame, and the cylinder bar is connected with briquetting (2), and briquetting (2) is connected with topping roll bearing block (12), hydraulic tracing control valve (18) is fixed on the frame (21), one end of valve rod and lever (19) is hinged, and two valve ports are connected with two hydraulic fluid ports of main hydraulic cylinder (1) respectively, and the fulcrum of lever (19) is fixed on the frame, mould disks (17) is connected with briquetting (2) by bearing, and hinged with an end of lever (19), the output shaft of sprocket wheel (15) is connected with mould disks (17), and motor (13) is fixed on the briquetting (2), its output shaft is connected with sprocket wheel (14), and is connected with sprocket wheel (15) by chain (20).

2. device according to claim 1 is characterized in that between the output shaft of sprocket wheel (15) and mould disks (17) ratchet (16) being installed, and the rotation of ratchet (16) is driven by steel wire rope (10) by feeding trolley (7).