CN100469470C - Holding-down device of the metal plate bands straightening press - Google Patents

Abstract

A metal plate pressing device with a leveling machine belongs to a metal plate with leveling machine technical field. The invention consists of four completely identical pressing screw mechanisms symmetrically arranged at the four corners. The invention is characterized in that a dual-sphere pad device and a short stroke servo cylinder are arranged between the lower end of each pressing screw and the moveable transverse beam; the upper end of the pressing screw and the bottom part of the short stroke servo cylinder are respectively provided with a displacement sensor. The invention has the advantages of dynamically adjustment the roller seam, precise positioning, stable correcting; the precision of the products is improved and the service life of the machine is prolonged.

Description

The metal plate bands straightening screwdown gear

Technical field

The invention belongs to the metal plate bands straightening technical field, be specifically related to a kind of metal plate bands straightening screwdown gear.

Technical background

At present, the screwdown gear of metal plate bands straightening has two types both at home and abroad, and a kind of is mechanical transmission structure, promptly is to drive the moved cross beam displacement by housing screw to realize the roll gap adjustment; Another kind is to drive the moved cross beam displacement by hydraulic cylinder piston to realize the roll gap adjustment.These two types respectively have pluses and minuses, and first type of shortcoming is can not realize in the course of the work dynamically adjusting the roll gap size, and processing performance is poor, and the roll gap positioning accuracy is low.Second type is all-hydraulic control, the control system complexity, and maintenance difficulties is big, the cost height.

Summary of the invention

The object of the invention provides a kind of screwdown gear of metal plate bands straightening of new construction, can overcome the shortcoming that prior art exists effectively.

The present invention is achieved in that it is made of the identical press-down screw mechanism of quadruplet that is arranged symmetrically in four jiaos, it is characterized in that between every housing screw lower end and moved cross beam, being equipped with two ball ring devices and short distance servoBcylinder, displacement transducer is installed in the upper end of housing screw and the bottom of short distance servoBcylinder.Concrete structure is that the nut that matches with four housing screws is fixedly mounted on the entablature, motor drives four housing screws by decelerator and rotates in nut and displacement, can realize depressing adjustment, the housing screw lower end is connected with upper recess surface seat in the ball ring device by connecting screw, the lower end of ball ring device is placed on above the short distance servoBcylinder, short distance servoBcylinder lower end is placed on above the moved cross beam, in the bottom of housing screw upper end and short distance servoBcylinder displacement transducer is installed.The concrete structure of ball ring device is up and down between two concave surface seats two involutory hemisphere face seats up and down to be installed, and links together by alignment pin, up and down two hemisphere face seats and up and down between two concave surface seats for being slidingly matched.Piston diameter in the short distance servoBcylinder is $D=\sqrt{\frac{P}{\mathrm{\π}\·p}};$ Piston stroke L=2 * (l ₁+ l ₂).

In the formula, P is unidirectional total straightening force;

P is a hydraulic cylinder works pressure;

l ₁Be dynamic adjustment amount, generally get 5～10mm;

l ₂Be design margin, generally get 10～15mm.

Advantage of the present invention and good effect:

1.. hydraulicdriven short distance servoBcylinder and displacement transducer are installed among the present invention, can realize dynamically adjusting in the course of the work roll gap, accurately location, the control of permanent roll gap.Can improve the precision of correcting product greatly.

2.. two ball ring devices are installed among the present invention, can adapt to that roll gap occurs in correcting process lean forward, hypsokinesis, "Left"-deviationist, Right deviation, the out-of-level side force that produces, can make the rectification stable working, improve machine service life.

Description of drawings:

Fig. 1 is structural representation of the present invention (is example with single press-down screw mechanism).

Among the figure: 1---entablature; 2---housing screw; 3---nut; 4---two ball ring devices; 5---the short distance servoBcylinder; 6---moved cross beam; 7---displacement transducer; 8---decelerator; 9---displacement transducer; 10---connecting screw; 11---the upper recess surface seat; 12---first spheric seating; 13---alignment pin; 14---second spheric seating; 15---the concave surface seat

The specific embodiment:

The present invention is made of the identical press-down screw mechanism of the quadruplet that is arranged symmetrically in four jiaos.Be that example illustrates with single press-down screw mechanism shown in Figure 1 now: the nut 3 that matches with housing screw 2 is installed on the entablature 1, motor drives housing screw 2 by decelerator 8 and rotate and do axial displacement in nut 3, housing screw 2 upper ends are equipped with displacement transducer 7, be connected with upper recess surface seat 11 by connecting screw 10 in housing screw 2 lower ends, link together by alignment pin 13 between first spheric seating 12 and second spheric seating 14, upper and lower hemispheres face seat 12 and 14 and last concave surface seat 11 and 15 between be to be slidingly matched, concave surface seat 15 is placed in above the short distance servoBcylinder 5, and the short distance servoBcylinder 5 that the bottom is equipped with displacement transducer 9 is placed on the moved cross beam 6.Four hydro-cushion cylinder assemblies are installed between moved cross beam and the entablature.During work, motor drives housing screw 2 by decelerator 8 and rotates and do axial displacement, force moved cross beam 6 to move by two ball ring devices 4 and short distance servoBcylinder 5, reach and adjust the roll gap purpose, the short distance servoBcylinder of installing in the machine, two ball ring device and displacement transducer can play dynamic adjustment, accurately location, the steadily effect of rectification.

Claims (3)

1, a kind of metal plate bands straightening screwdown gear, it is to be made of the identical press-down screw mechanism of the quadruplet that is arranged symmetrically in four jiaos, it is characterized in that being equipped with between every housing screw (2) lower end in above-mentioned quadruplet press-down screw mechanism and the moved cross beam (6) two ball ring devices (4) and short distance servoBcylinder (5), displacement transducer (7,9) is installed in every housing screw (2) upper end with bottom short distance servoBcylinder (5).

2, metal plate bands straightening screwdown gear as claimed in claim 1, it is characterized in that described pair of ball ring device (4) is to be linked together by alignment pin (13) by involutory two hemisphere face seats (12,14) up and down, is to be slidingly matched between upper and lower hemispheres face seat (12,14) and the last concave surface seat (11,15).

3, metal plate bands straightening screwdown gear as claimed in claim 1 is characterized in that the diameter of the piston of described short distance servoBcylinder $D=\sqrt{\frac{P}{\mathrm{\π}\·p}},$ Piston stroke is L=2 * (l ₁+ l ₂)

In the formula: P-be unidirectional total straightening force

P-be hydraulic cylinder works pressure

l ₁-dynamic adjustment amount is got 5～10mm

l ₂-design margin is got 10～15mm.

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