A coil ironing roller device for a high-speed cold rolling mill

Abstract

A coil ironing roller device for a high-speed cold rolling mill, wherein the coil is tightened by an angle roller and then wound on a winding roller, and the ironing roller is installed at one end of a lever; the projection point B of the lever rotation axis, the projection point A of the winding roller axis, and the projection point C of the coil at the departure tangent of the angle roller, are located on the same straight line; the axis projection point of the ironing roller is D; in terms of length, AB=BC, DB=AB+L, wherein 80mm≥L≥35mm. The present invention takes the motion trajectory of the coil cutting point as the research object, so that the ironing roller can be relatively constantly pressed at a position 3-5 cm far from the coil cutting point, so as to achieve the purpose of the best coiling effect. The constant pressure mechanism of the present invention only needs the swing cylinder to output a constant thrust, so that the ironing roller can exert a constant pressure on the coil, thereby simplifying the constant pressure control system of the ironing roller device.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum plate processing, and in particular to a coil ironing roller device for a high-speed cold rolling mill. Background Art

[0002] The ironing roller device is a device required for aluminum coil processing. Its main function is to assist the coiler to make the coils tight and neat and squeeze out the air gap. The existing ironing roller device usually adopts the structure of a swing arm cylinder to keep the ironing roller constantly pressed on the coil. As the coil diameter increases, the pressing position of the ironing roller on the coil changes. According to the installation position of the ironing roller arm, the pressing position of the ironing roller either gradually moves away from the coil cutting point or gradually approaches the coil cutting point, and cannot be constant. Practice has shown that when the pressing position of the ironing roller is constant at about 3-5 cm far from the coil cutting point, the coil winding effect is best. Since the mathematical modeling of the ironing roller motion mechanism is nonlinear, the existing ironing roller device has not been able to solve this problem well. Summary of the invention

[0003] In order to overcome the shortcomings of the background technology, the present invention discloses a high-speed cold rolling mill coil ironing roller device, which adopts the following technical solutions:

[0004] A coil ironing roller device for a high-speed cold rolling mill, wherein the coil is tightened by an angle roller and then wound on a winding roller, and the ironing roller is installed at one end of a lever; the projection point B of the lever rotation axis, the projection point A of the winding roller axis, and the projection point C of the coil at the departure tangent of the angle roller are located on the same straight line; the axis projection point of the ironing roller is D; in terms of length, AB=BC, DB=AB+L, wherein 80mm≥L≥35mm.

[0005] To further improve the technical solution, the other end of the lever is hinged with a swing cylinder; assuming that the projection point of the hinge axis of the lever and the swing cylinder is F, and the projection point of the swing axis of the swing cylinder is E, then there is a relationship: projection point E is collinear with projection point A, projection point B, and projection point C, and line segment AD is parallel to line segment EF.

[0006] To further improve the technical solution, the ratio of the length of the line segment AC to the radius of the angle roller is greater than 25.

[0007] To further improve the technical solution, the ratio of the length of the line segment DB to the radius of the ironing roller is greater than 15.

[0008] Due to the adoption of the above technical solution, compared with the background technology, the present invention has the following beneficial effects:

[0009] The present invention takes the motion trajectory of the coiling and cutting point as the research object, so that the ironing roller can be relatively constantly pressed at a position 3-5 cm far from the coiling and cutting point, thereby achieving the purpose of the best coiling effect.

[0010] The constant pressure mechanism of the present invention can realize that the ironing roller applies a constant pressure to the coiled material only by the swing cylinder outputting a constant thrust, thereby simplifying the constant pressure control system of the ironing roller device. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the winding roller when it starts to wind up the coil.

[0012] Figure 2 It is a schematic diagram of the structure when the roller is winding a coil of a certain thickness.

[0013] In the figure: 1. Winding roller; 2. Ironing roller; 3. Coil; 4. Angle roller; 5. Swing cylinder; 6. Lever. DETAILED DESCRIPTION

[0014] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0015] A high-speed cold rolling mill coil ironing roller device, such as Figure 1-2 As shown, the coil 3 is wound on the winding roller 1 after being tightened by the angle roller 4, and the ironing roller 2 is installed at one end of the lever 6, and the lever 6 here is equivalent to the ironing roller arm described in the background technology. The projection point B of the rotation axis of the lever 6, the projection point A of the axis of the winding roller 1, and the projection point C of the coil 3 at the departure tangent of the angle roller 4 are located on the same straight line. The projection point of the axis of the ironing roller 2 is D, so in terms of length, there is a relationship of AB=BC and DB=AB+L.

[0016] If L is set to zero, then AB=BC=DB. According to geometric knowledge, the projection point D of the axis of the ironing roller 2 can be regarded as a point rotating along a circle with point B as the center and AB as the radius. Since AC is the diameter of the circle, the line segment AD must be perpendicular to the line segment CD, that is, point D is the tangent point of the coil 3, and as the coil diameter increases, point D is always located at the tangent point. Since the ironing roller 2 has a certain radius, the pressing position of the ironing roller 2 will fall at the proximal position of the tangent point, and the larger the radius of the ironing roller 2, the farther it is from the tangent point, which will cause the coil 3 to be pressed by the ironing roller 2 before reaching the tangent point. For this reason, the radius of the ironing roller 2 must be limited. After calculation, when the ratio of the length of the line segment DB to the radius of the ironing roller 2 is greater than 15 times, this factor has little effect on the pressing position of the ironing roller 2.

[0017] In order to achieve the best position of the ironing roller 2 pressing at about 3-5 cm far from the coiling point, it is also necessary to increase the length of the line segment DB. According to the radius of the ironing roller 2, the corresponding length L is selected. The larger the radius of the ironing roller 2, the larger the value of L, and vice versa. According to the size of the most commonly used aluminum plate production equipment, L is usually taken as: 80mm≥L≥35mm. In this way, the pressing position of the ironing roller 2 can be relatively constant at the best position about 3-5 cm far from the coiling point.

[0018] As the coil diameter increases, the departure tangent position of the coil 3 at the angle roller 4 also changes. However, since the radius of the angle roller 4 is relatively small, the ratio of the length of the line segment AC to the radius of the angle roller 4 in actual production is much larger than 25 times. Therefore, the change in this position has a negligible effect on the clamping position of the ironing roller 2.

[0019] In order to make the pressure of the ironing roller 2 on the coil 3 constant, a swing cylinder 5 is hinged at the other end of the lever 6. Let the projection point of the hinge axis of the lever 6 and the swing cylinder 5 be F, and the projection point of the swing axis of the swing cylinder 5 be E. Then there is a relationship: the projection point E is collinear with the projection points A, B, and C, and the line segment AD is parallel to the line segment EF. Figure 1-2 It can be seen that, no matter the coil diameter increases or decreases, triangle ABD is always an approximate triangle with triangle BEF, and line segment AD has a constant ratio with line segment EF. In other words, as long as the swing cylinder 5 outputs a constant thrust, the ironing roller 2 applies a constant pressure to the coil 3, and the pressure does not change with the change of the angle of the lever 6.

[0020] The parts not described in detail in the present invention are prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the protection scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A coil ironing roller device for a high-speed cold rolling mill, wherein the coil is tightened by an angle roll and then wound on a winding roller, wherein: The ironing roller is installed at one end of the lever; the projection point B of the lever rotation axis, the projection point A of the winding roller axis, and the projection point C of the coiled material at the departure tangent of the angle roller are located on the same straight line; the axis projection point of the ironing roller is D; in terms of length, AB=BC, DB=AB+L, among which 80mm≥L≥35mm, and the ratio of the length of the line segment DB to the radius of the ironing roller is greater than 15.

2. A high-speed cold rolling mill coil ironing roller device as claimed in claim 1, characterized in that: The other end of the lever is hinged with a swing cylinder; assuming that the projection point of the hinge axis of the lever and the swing cylinder is F, and the projection point of the swing axis of the swing cylinder is E, then there is a relationship: projection point E is collinear with projection point A, projection point B, and projection point C, and line segment AD is parallel to line segment EF.

3. A high-speed cold rolling mill coil ironing roller device as claimed in claim 1, characterized in that: The ratio of the length of line segment AC to the radius of the corner roller is greater than 25.

Images