CN115722724A

CN115722724A - Roller flying shear shearing adjustment method

Info

Publication number: CN115722724A
Application number: CN202211505910.6A
Authority: CN
Inventors: 白龙; 薛越; 高军; 孙长玉; 刘丹
Original assignee: Baotou Iron and Steel Group Co Ltd
Current assignee: Baotou Iron and Steel Group Co Ltd
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-03-03

Abstract

The invention provides a roller flying shear shearing adjusting method, and belongs to the technical field of adjusting methods. The invention comprises the following steps: 1) Manual adjustment: slightly rotating an adjusting hand wheel to observe the rotating direction of the shear blade, after determining the size of the gap to be adjusted, manually rotating a brake disc to enable the shear blade to slowly enter a shearing meshing state, rotating for a circle without blocking, performing a shearing test, and shearing to complete the adjustment; or the measuring device does not have jamming after rotating for a circle, and the adjustment can be completed when the preset gap is reached; 2) After manual adjustment is completed, the adjusting hand wheel is locked and automatic on-line shearing is performed. The invention can ensure the shearing effect of the roller flying shear and improve the shearing precision of the roller flying shear.

Description

Roller flying shear shearing adjustment method

Technical Field

The invention relates to the technical field of adjusting methods, in particular to a roller flying shear shearing adjusting method.

Background

At present, the cold rolling galvanizing production line is used for outlet area to cut waste samples, the galvanized wire roller shear is one of the main factors restricting the production line speed, along with the long-time use of the roller shear, the shear blade is worn and torn very easily, the shear blade gap becomes large, even the tipping, usually through adjusting the shear blade gap, compensate the gap caused by wearing and tearing. However, the actual effect is not ideal through multiple use and adjustment, and the phenomena of knife connection, non-cutting, non-continuous cutting and the like are actually expressed, so that the productivity and the product quality of the production line are seriously influenced. Therefore, the cost of spare parts is increased, the production time is wasted, and the production cost is increased.

Disclosure of Invention

In view of the above, in order to solve the technical problem that the continuous normal operation of the production line and the processing cost are affected by the roller flying shears such as the continuous connection, the non-open cutting and the continuous cutting, the invention provides a roller flying shear shearing adjustment method, which can ensure the shearing effect of the roller flying shears and improve the shearing precision of the roller flying shears.

In order to achieve the purpose, the invention provides the following technical scheme:

a roller flying shear shearing adjustment method comprises the following steps:

1) Manual adjustment: slightly rotating an adjusting hand wheel to observe the rotating direction of the shear blade, after determining the size of a gap to be adjusted, manually rotating a brake disc to enable the shear blade to slowly enter a shearing meshing state, rotating for a circle without blocking, performing a shearing test, and shearing to complete the adjustment;

or the measuring device does not have jamming after rotating for a circle, and the adjustment can be completed when the preset gap is reached;

2) After the manual adjustment is finished, the adjusting hand wheel is locked and the on-line automatic cutting is carried out.

Preferably, the shear test is carried out in 1) using A4 paper.

Preferably, the gap in 1) is 0.02 mm.

Preferably, the thickness of the middle pad of the driven gear of the roller shear is adjusted when the gap just adjusted becomes large in a short time or when the manual shearing is successful but the automatic shearing is switched to the automatic shearing, which causes a phenomenon that the middle pad cannot be cut.

Compared with the prior art, the invention has the following beneficial effects:

by utilizing the method for adjusting the shearing of the roller flying shear, the roller flying shear is adjusted to ensure the shearing effect of the roller flying shear, the shearing precision of the roller flying shear is improved, in 2021, because the roller flying shear and the cutter shear continuously generate 335.2 tons of waste products, the conversion benefit loss is 550800 yuan, and a specific calculation formula is as follows: loss benefit = waste amount per ton steel loss cost =335.2 ton 1643 yuan/ton =550800 yuan (cost price per ton steel 3498.21 yuan/ton, recovery price of scrap 1855 yuan/ton).

Drawings

FIG. 1 is a cross-sectional view of an adjusting hand wheel of a roller flying shear;

fig. 2 is a diagram showing a state in which two coaxial helical gears among the driven gears are engaged;

in the figure, 1 is an adjusting screw rod, 2 is a rotating nut, 3 is a connecting shaft, 4 is a driven gear, and 5 is a driving gear.

Detailed Description

In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.

The embodiments of the present invention illustrated in the description are preferred embodiments of the present invention, and are intended to be illustrative in many ways and not limiting. In other words, the details of the present invention can be obtained from the description of the embodiments by those skilled in the art, and thus, the description thereof is omitted here for brevity.

As shown in fig. 1, an adjusting hand wheel of a roller flying shear includes an adjusting screw 1, a rotating nut 2, a connecting shaft 3, a driven gear 4 and a driving gear 5, which are well known to those skilled in the art, and details of the specific structure of the roller flying shear are not described again, and the technical solution of the present invention is explained in detail with reference to fig. 1 and fig. 2.

A roller flying shear shearing adjustment method comprises the following steps:

1) The direction of rotation of cutting edge is observed to slight rotation adjustment hand wheel, confirms that the size in clearance will be adjusted after, and manual rotatory brake disc lets the cutting edge slowly get into the shearing engaged state, and the electronic shearing in the back of can not adjusting is taboo surely, prevents that cutting edge clearance undersize from causing the tipping when rotatory, damage cutting edge body. If the paper is not blocked after rotating for a circle, the paper can be subjected to a shearing test by using standard A4 paper or measured by using a feeler gauge, and the gap of the paper can reach 0.02 mm. After the manual adjustment is finished, the adjusting hand wheel needs to be locked and is subjected to online automatic shearing, thin strip steel can be placed between the rollers, shearing action is performed by the operating room, and the adjustment can be finished if the thin strip steel is sheared. But it is often the case that the scissors are still uncut or cannot be adjusted at all after adjustment.

2) This problem is caused by the fact that the gap just adjusted becomes large in a short time or the phenomenon that the blade cannot be cut when the manual cutting is successful but the automatic cutting is performed. If the above problems occur, the gear box needs to be disassembled and adjusted. The driven gear 4 is formed by overlapping two sets of helical cylindrical gears, and the middle gasket is used for enabling the two overlapped helical cylindrical gears to generate staggered teeth due to the axial distance, so that the reference circle tooth thickness S1 (shown in figure 2) reduced due to abrasion can be made up.

When the thickness of the middle gasket is adjusted, the two coaxial helical cylindrical gears are dislocated as shown in fig. 2, so that the situations that the tooth surface clearance is too large and the shearing precision is reduced due to abrasion can be effectively compensated, and the method needs to be completed through measuring and testing for a plurality of times. The data corresponding to the displacement generated by adjusting the middle pad between the helical gears are shown in the following table 1.

TABLE 1 Gear Displacement corresponding to the center pad

If this occurs, it can be determined that the connecting shaft 3 of the adjusting hand wheel has disengaged from the end cap of the driven gear 4. As shown in fig. 1, the end cover and the connecting shaft 3 are in interference fit, and due to long-time use and impact, the end cover is easy to fall off, and accordingly, the helical gear is axially displaced, and the cutting edge is completely deviated. The method is also to open the box and disassemble, take out the connecting shaft 3 and the rear cover plate to be assembled properly and then weld, polish and flatten and then repack, and also manually adjust and cut to connect automatically, so that the method can thoroughly solve the problems.

The technical effects of the technical solution of the present invention will be described in detail with reference to specific examples.

Example 1

The rotation of the cutting edge of the roller flying shear before the contact with the strip steel is called a preparation section, and the contact with the strip steel and the separation from the strip steel are called shearing sections.

The speed of the final shearing interval is constant, so that a program is required to control the acceleration precision, the peak value of the shearing speed as shown in the figure is reduced, the stable acceleration is realized, the speed stability in the shearing interval is ensured, otherwise, the inertia force is too large due to too large acceleration, the shearing speed cannot be timely recovered to the normal shearing interval, and the most direct expression is that the strip steel is continuously sheared, or tension fluctuation is caused by pulling. Secondly, the impact on the transmission mechanism of the roller shear body is serious, a series of factors influencing shearing, such as serious abrasion of a transmission set, reduction of shearing precision and the like, can occur after a long time, and the following table 2 is set according to the optimal shearing period when the strip steel with different specifications is produced.

TABLE 2 optimum shear cycle of strip steel

Example 2

The axial movement is achieved by a pair of meshing gears with helical teeth that rotate relative to each other. The same principle is used for widening and tightening the gap, i.e. the axial movement of the upper roller flying shear is synchronized by a helical gear mounted at the end of the drive side drum. The bull gear is engaged with a bull gear at the end of the roller shear on the driving side, and the flying shear on the moving upper roller is generated by the operation of the bull gear, and the shear gap adjustment is influenced by the forward or reverse movement. The clearance adjustment of the cutting edge is realized by an operation side hand wheel mechanism: 1. and (3) rotating in the counterclockwise direction: the gap is narrowed; 2. clockwise rotation: the gap becomes wider; 3. for each rotation of the bushing 5.99: the shear gap was changed by 0.01mm. The necessary gap corrections can be made according to the following table, modified as in table 3 below:

TABLE 3 gap correction Table

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.

Claims

1. A roller flying shear shearing adjustment method is characterized by comprising the following steps:

or the device does not have jamming after rotating for a circle, measurement is carried out, and the adjustment can be finished when a preset gap is reached;

2. The method for adjusting the shear of a roller flying shear as claimed in claim 1, wherein the shear test is performed on A4 paper in 1).

3. A roller shear conditioning method as claimed in claim 1, wherein the gap in 1) is 0.02 mm.

4. The method as claimed in claim 1, wherein the thickness of the middle pad of the driven gear of the roller flying shear is adjusted when the gap just adjusted becomes larger in a short time or when the manual shearing is successful but the automatic shearing is switched to the automatic shearing, the middle pad is not cut.