阅读说明：本技术 一种消减因卷料板型中松而产生剪切缺陷的方法 (Method for eliminating shearing defects caused by loose roll material plate ) 是由 管飞鹏 杨晓峰 纪陶 蒋涛 宋远航 于 2021-08-12 设计创作，主要内容包括：本发明公开了一种消减因卷料板型中松而产生剪切缺陷的方法,本方法采用反开卷方式进行放卷,一方面减小铝卷与偏导辊之间的包角,减轻了力矩带来的板型扭动,另一方面在进行反开卷放卷生产时,由于板型中松铝卷的表面为凹浪状,所以在经过圆盘切刀剪切后铝卷切边面上形成的立棱偏小,同时根据铝卷的板型情况来调节入口导辊两端的高度,防止了两段预卷料由于卷料板型不同而发生板型拉伸碰撞干涉,有效消减了切边面上的荷叶边缺陷,大大提高了铝卷板材的成品率和质量。(The invention discloses a method for eliminating shearing defects caused by loose plate shape of a coil stock, which adopts a reverse uncoiling mode for uncoiling, so that on one hand, the wrap angle between an aluminum coil and a deflection guide roller is reduced, and the plate twisting caused by moment is reduced, on the other hand, when the reverse uncoiling and uncoiling production is carried out, because the surface of the loose aluminum coil in the plate shape is in a concave wave shape, a vertical edge formed on the edge cutting surface of the aluminum coil after being sheared by a disc cutter is smaller, and simultaneously, the heights of two ends of an inlet guide roller are adjusted according to the plate shape condition of the aluminum coil, the plate stretching collision interference of two sections of pre-coiled stock due to different plate shapes of the coil stock is prevented, the lotus leaf edge defects on the edge cutting surface are effectively eliminated, and the yield and the quality of an aluminum coil plate are greatly improved.)

1. A method of reducing shear defects due to looseness in the form of a web, comprising the steps of:

the method comprises the following steps: placing an aluminum coil with loose plate shape on an unwinding roller, controlling the unwinding roller to unwind in a reverse unwinding mode, arranging a deflection roller at the unwinding position of the aluminum coil, and enabling the aluminum coil to be unwound from the bottom in the reverse unwinding mode by rotating the aluminum coil anticlockwise;

step two: according to the plate type condition of the aluminum coil, the heights of two ends of a front inlet guide roller of a disc cutter are adjusted, and the height of one end, corresponding to the loose aluminum coil, of the plate type on the inlet guide roller is reduced;

step three: opening a disc cutter to cut the aluminum coil to obtain a pre-coiled material after edge cutting, compacting the aluminum coil by a compression roller in front of a wind-up roller in the cutting process, wherein the gap value and the overlapping amount between the knife edge of the disc cutter and the aluminum coil are respectively 10 +/-1% and 50 +/-5% of the thickness of the aluminum coil,

step four: winding the pre-coiled material obtained in the third step by a winding roller;

step five: and after the whole aluminum coil is cut, unloading the pre-coiled material on the winding roller to obtain a finished coiled material with qualified trimming quality and no cutting defect.

2. A method for reducing shearing defects caused by loose aluminum in the plate type of the coil stock according to claim 1, wherein the height drop value of the inlet guide roller corresponding to one end of the loose aluminum coil in the plate type in the second step is less than or equal to 1 mm.

3. A method for reducing shearing defects caused by loosening of the plate shape of the coil stock according to claim 1, wherein the clearance between the edge of the disc cutter and the aluminum coil in the third step is 10% of the thickness of the aluminum coil.

4. A method for reducing shearing defects caused by looseness in the shape of a coil stock according to claim 1, wherein the overlapping amount between the edge of the disc cutter and the aluminum coil in the third step is 50% of the thickness of the aluminum coil.

5. The method for eliminating the shearing defect caused by the intermediate loosening of the coil plate type as claimed in claim 1, wherein the winding tension of the winding roller in the fourth step is within a range of 3.0 +/-0.3 KN/mm²。

Technical Field

The invention belongs to the technical field of aluminum coil shearing, and particularly relates to a method for reducing shearing defects caused by loose coil plate type.

Background

The aluminum coil is mostly uncoiled in a positive uncoiling mode when being cut, if the material coiling plate type has a middle loose condition, the edge cutting point of the disc cutter in the middle of the shearing device corresponds to the position of the middle loose of the material coiling plate type, the edge cutting surface of the sheared aluminum coil can generate vertical edges, the edge cutting surfaces of two sections of aluminum coil plates after the middle cutting can collide and interfere with each other when running to a coiling mechanism, the lotus leaf edge quality defect is caused, the normal use of the aluminum coil is seriously influenced by the defect, and the yield and the quality of the aluminum coil plates are reduced.

Disclosure of Invention

The invention aims to solve the defects of the prior art and provides a method for eliminating the shearing defect caused by loose coil plate type.

A method of reducing shear defects due to looseness in the form of a web, comprising the steps of:

the method comprises the following steps: placing an aluminum coil with loose plate shape on an unwinding roller, controlling the unwinding roller to unwind in a reverse unwinding mode, arranging a deflection roller at the unwinding position of the aluminum coil, and enabling the aluminum coil to be unwound from the bottom in the reverse unwinding mode by rotating the aluminum coil anticlockwise;

step two: according to the plate type condition of the aluminum coil, the heights of two ends of a front inlet guide roller of a disc cutter are adjusted, and the height of one end, corresponding to the loose aluminum coil, of the plate type on the inlet guide roller is reduced;

step three: opening a disc cutter to cut the aluminum coil to obtain a pre-coiled material after edge cutting, compacting the aluminum coil by a compression roller in front of a wind-up roller in the cutting process, wherein the gap value and the overlapping amount between the knife edge of the disc cutter and the aluminum coil are respectively 10 +/-1% and 50 +/-5% of the thickness of the aluminum coil,

step four: winding the pre-coiled material obtained in the third step by a winding roller;

step five: and after the whole aluminum coil is cut, unloading the pre-coiled material on the winding roller to obtain a finished coiled material with qualified trimming quality and no cutting defect.

Preferably, the height drop value of one end of the inlet guide roller corresponding to the loose aluminum coil in the plate type in the step two is less than or equal to 1 mm.

Preferably, the gap value between the knife edge of the disc cutter and the aluminum coil in the third step is 10% of the thickness of the aluminum coil.

Preferably, the overlapping amount between the knife edge of the disc cutter and the aluminum coil in the third step is 50% of the thickness of the aluminum coil.

Preferably, the winding tension range of the winding roller in the fourth step is 3.0 +/-0.3 KN/mm²。

Has the advantages that: the invention discloses a method for eliminating shearing defects caused by loosening of a coil plate, which has the following advantages: (1) the aluminum coil is uncoiled by adopting a reverse uncoiling mode, so that on one hand, the wrap angle between the aluminum coil and a deflection roller is reduced, and the plate type torsion caused by moment is reduced, and on the other hand, when the reverse uncoiling and uncoiling production is carried out, because the surface of the loose aluminum coil in the plate type is in a concave wave shape, the vertical edge formed on the edge cutting surface of the aluminum coil after being cut by a disc cutter is smaller; (2) the heights of the two ends of the inlet guide roller are adjusted according to the plate type condition of the aluminum coil, so that plate type stretching collision interference of the cut aluminum coil due to different plate types of the coil stock is prevented, and the lotus leaf edge defect on the edge cutting surface is effectively reduced; (3) the gap value and the overlapping amount between the knife edge of the disc cutter and the aluminum coil are adjusted according to the thickness of the aluminum coil, so that the disc cutter can smoothly realize middle cutting, and vertical edges formed on the edge cutting surface of the aluminum coil are reduced; (4) through controlling the winding tension of the winding roller and compacting the aluminum coil by using the compression roller, the stress uniformity on the aluminum coil edge cutting surface in the shearing process is ensured, and the phenomenon of layer stringing can not occur during winding.

Drawings

FIG. 1 is a schematic diagram of the structure of an aluminum coil shearing process;

in the figure: 1. unreeling roller 2, deflection guide roller 3, inlet guide roller 4, disc cutter 5, compression roller 6, wind-up roller 7, aluminum coil 8 and finished coil stock

Detailed Description

For the purpose of enhancing the understanding of the present invention, the present invention will be described in further detail with reference to the following examples and the accompanying drawings, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.

As shown in fig. 1, a method of reducing shear defects due to looseness in the shape of a web includes the steps of:

the method comprises the following steps: placing an aluminum coil 7 with loose plate type on an unwinding roller 1, controlling the unwinding roller 1 to unwind in a reverse unwinding mode, and arranging a deflection roller 2 at the unwinding position of the aluminum coil 7, wherein the reverse unwinding mode enables the aluminum coil 7 to discharge from the bottom by rotating the aluminum coil 7 anticlockwise;

step two: according to the plate type condition of the aluminum coil 7, the heights of two ends of an inlet guide roller 3 in front of a disc cutter 4 are adjusted, and the height of one end, corresponding to the plate type loose aluminum coil 7, of the inlet guide roller 3 is reduced;

step three: opening a disc cutter 4 to cut an aluminum coil 7 to obtain a pre-rolled material after trimming, compacting the aluminum coil 7 by a compression roller 5 in front of a wind-up roller 6 in the cutting process, wherein the gap value and the overlapping amount between the knife edge of the disc cutter 4 and the aluminum coil 7 are respectively 10 +/-1% and 50 +/-5% of the thickness of the aluminum coil 7,

step four: winding the pre-coiled material obtained in the third step by a winding roller 6;

step five: and after the whole aluminum coil 7 is cut, unloading the pre-coiled material on the winding roller 6 to obtain a finished coiled material 8 with qualified trimming quality and no cutting defect.

In this embodiment, the height drop value of the inlet guide roller 3 corresponding to one end of the loose aluminum coil 7 in the plate shape in the second step is less than or equal to 1 mm.

In this embodiment, the gap between the edge of the disc cutter 4 and the aluminum coil 7 in the third step is 10% of the thickness of the aluminum coil 7.

In the embodiment, the overlapping amount between the knife edge of the disc cutter 4 and the aluminum coil 7 in the third step is 50% of the thickness of the aluminum coil 7.

In this embodiment, the winding tension range of the wind-up roll 6 in the fourth step is 3.0 ± 0.3KN/mm²。

The method has the following advantages: (1) the aluminum coil is uncoiled by adopting a reverse uncoiling mode, so that on one hand, the wrap angle between the aluminum coil and a deflection roller is reduced, and the plate type torsion caused by moment is reduced, and on the other hand, when the reverse uncoiling and uncoiling production is carried out, because the surface of the loose aluminum coil in the plate type is in a concave wave shape, the vertical edge formed on the edge cutting surface of the aluminum coil after being cut by a disc cutter is smaller; (2) the heights of the two ends of the inlet guide roller are adjusted according to the plate type condition of the aluminum coil, so that plate type stretching collision interference of the cut aluminum coil due to different plate types of the coil stock is prevented, and the lotus leaf edge defect on the edge cutting surface is effectively reduced; (3) the gap value and the overlapping amount between the knife edge of the disc cutter and the aluminum coil are adjusted according to the thickness of the aluminum coil, so that the disc cutter can smoothly realize middle cutting, and vertical edges formed on the edge cutting surface of the aluminum coil are reduced; (4) through controlling the winding tension of the winding roller and compacting the aluminum coil by using the compression roller, the stress uniformity on the aluminum coil edge cutting surface in the shearing process is ensured, and the phenomenon of layer stringing can not occur during winding.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.