CN210477882U

CN210477882U - Two-stage balancing device for screw rod and slide block of heavy screw press

Info

Publication number: CN210477882U
Application number: CN201920899080.7U
Authority: CN
Inventors: 李德仁; 毛晓峰; 杨景涛; 赵强; 朱元刚
Original assignee: Qingdao Hongda Metal Forming Machinery Co ltd
Current assignee: Qingdao Hongda Metal Forming Machinery Co ltd
Priority date: 2019-06-15
Filing date: 2019-06-15
Publication date: 2020-05-08
Anticipated expiration: 2029-06-15

Abstract

The utility model provides a heavy screw press screw rod slider second grade balancing unit, including the little support arm of slider, install the balanced straining beam on the little support arm of slider, install the balanced dish spring of coincide combination formula second grade on the balanced straining beam, with the little support arm of slider, balanced straining beam, the balanced dish spring adjusting bolt of second grade that the balanced dish spring of coincide combination formula second grade fastens together, install in crossbeam top side, the piston rod links to each other with the pull rod, and the balance cylinder that is connected with balanced straining beam through the pull rod, install the concave bearing frame on the protruding formula position in the middle of the balanced straining beam, install the thrust bearing between protruding formula position and the concave bearing frame in the middle of the balanced straining beam. The utility model discloses balanced effectual, the stress is good, and frictional loss is little, and is energy-conserving, makes the slider motion nimble, and the vice lubrication effect of spiral is good, has alleviateed moving part's wearing and tearing greatly, can the vice life-span of effectual extension spiral. The double-stage balance type heavy numerical control screw press can be widely applied to heavy numerical control screw presses, and is particularly applied to 125000kN screw rod slide block two-stage balance type heavy numerical control screw presses.

Description

Two-stage balancing device for screw rod and slide block of heavy screw press

Technical Field

The invention relates to a two-stage balancing device for a screw slide block of a heavy screw press, which can be widely applied to the heavy numerical control screw press, in particular to a 125000kN two-stage balancing type heavy numerical control screw press.

Background

The traditional balance mode at home and abroad is to simply lift the slide block, only 80-90% of the weight of the slide block is balanced, and for a heavy screw press, because the weight of a screw rod, a flywheel and a die is too large, the tooth surface of a screw pair is subjected to extremely large positive pressure, a good lubricating oil film cannot be formed when the screw rod rotates, the motion of the slide block is insensitive, and the abrasion of the screw pair is serious. If the balance force is simply increased, the abrasion problem is directly transferred to the screw cap and the copper gasket, so that the friction force between the bearing parts is increased, the abrasion is serious, and the sliding block is still difficult to operate.

Disclosure of Invention

The invention aims to provide a secondary balancing device of a screw and a slide block of a heavy screw press, which has the advantages of good balancing effect, good stress state, small friction loss, energy conservation, buffer effect, reduction of rigid impact, flexible movement of the slide block, good lubricating effect of a screw pair, great reduction of abrasion of moving parts and capability of effectively prolonging the service life of the screw pair.

In order to achieve the purpose, the secondary balancing device of the screw rod sliding block of the heavy screw press comprises a small sliding block supporting arm arranged on a sliding block, a balance straining beam arranged on the small sliding block supporting arm, a superposed combined secondary balance disc spring arranged on the balance straining beam, a secondary disc spring adjusting bolt for fastening the small sliding block supporting arm, the balance straining beam and the superposed combined secondary balance disc spring together, a balance cylinder arranged on the upper side surface of a cross beam, a piston rod connected with a pull rod and connected with the balance straining beam through the pull rod, a concave bearing seat arranged on a convex part in the middle of the balance straining beam, and a thrust bearing arranged between the convex part in the middle of the balance straining beam and the concave bearing seat.

The invention relates to a two-stage balancing device for a screw rod slide block of a heavy screw press, which has the working principle that: the tension of the balance cylinder directly acts on the lower end of the screw rod through the balance straining beam and the thrust bearing to form primary balance of the balance screw rod and the flywheel; meanwhile, the tension forms secondary balance for the sliding block and the die through the superposed combined secondary balance disc spring, the secondary disc spring adjusting bolt and the sliding block small supporting arm.

According to the heavy screw press screw slider two-stage balancing device, the problem of positive pressure between the screw and the nut is solved by the aid of the first-stage balancing force, the positive pressure between the screw cap and the copper gasket is solved by the aid of the second-stage balancing force, so that friction force between the two parts is reduced, and the two parts can be in a non-contact suspension state when the pressure of the balancing cylinder is adjusted to an ideal state, so that a nearly non-friction state is achieved. This can minimize the friction loss while achieving the energy saving effect. Therefore, the balance effect is good, the stress state is good, the friction loss is small, and the energy is saved.

The two-stage balancing device for the screw rod and the slide block of the heavy screw press effectively overcomes the defects of the traditional balancing mode, enables the slide block to move flexibly, has good lubricating effect of a screw pair, greatly reduces the abrasion of moving parts, and can effectively prolong the service life of the screw pair.

The screw slide block secondary balancing device of the heavy screw press adopts a superposed combined secondary balancing disc spring structure, and the disc spring bears great load in a smaller space and has good buffering and shock absorption capacity. Particularly, when the lamination combination is adopted, the effects of absorbing impact and dissipating energy are more remarkable due to the surface friction resistance. Therefore, the buffer effect is achieved, and the rigid impact is reduced.

In conclusion, the two-stage balancing device for the screw rod and the slide block of the heavy screw press has the advantages of good balancing effect, good stress state, small friction loss, energy conservation, flexible slide block movement and good screw pair lubricating effect, greatly reduces the abrasion of moving parts, and can effectively prolong the service life of the screw pair.

Drawings

The invention will be further described with reference to the accompanying drawings and examples thereof.

Fig. 1 is a schematic structural view of the present invention.

Detailed Description

In fig. 1, the secondary balancing device for the screw slide block of the heavy screw press comprises a small support arm 1 of the slide block, which is arranged on a slide block 8, a balance straining beam 2 arranged on the small support arm of the slide block, a superposed combined secondary balance disc spring 3 arranged on the balance straining beam, a secondary disc spring adjusting bolt 4 for fastening the small support arm of the slide block, the balance straining beam and the superposed combined secondary balance disc spring together, a balance cylinder 5 which is arranged on the upper side surface of a cross beam 9, a piston rod of which is connected with a pulling rod and is connected with the balance straining beam through the pulling rod 10, a concave bearing seat 6 arranged on a convex part in the middle of the balance straining beam, and a thrust bearing 7 arranged between the convex part and the concave bearing seat in the middle of the.

In the figure, a screw 11 and a flywheel 12 are shown.

It should be understood that the above-described embodiments are merely exemplary of the present invention, and that various changes and modifications in the form, construction, features and spirit of the invention described in the claims should be included in the scope of the invention.

Claims

1. The utility model provides a heavy screw press screw rod slider second grade balancing unit, a serial communication port, including installing the little support arm of slider on the slider, install the balanced straining beam on the little support arm of slider, install the balanced dish spring of coincide combination formula second grade on the balanced straining beam, with the balanced dish spring adjusting bolt of slider little support arm, balanced straining beam, the balanced dish spring of coincide combination formula second grade fastening together, install in crossbeam top side, the piston rod links to each other with the pull rod, and the balancing cylinder that is connected with balanced straining beam through the pull rod, install the concave bearing frame on the protruding formula position in the middle of the balanced straining beam, install the thrust bearing between protruding formula position and the concave bearing frame in the middle of the balanced straining beam.