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A method of controlling the positioning of the tape head on the soft jaw

A technology of jaws and thin strips, applied in rolling mill control devices, manufacturing tools, metal rolling, etc., can solve the influence of reliability and detection accuracy, the different lengths of lead lift, and the influence of strip thickness positioning accuracy is not considered, etc. problem, to achieve the effect of improving accuracy and avoiding detection deviation

Active Publication Date: 2021-04-20
CHINA NAT HEAVY MACHINERY RES INSTCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, in order to position the tape head on the soft jaw, the motor encoder of the coiler is usually used to assist in positioning, but there are still the following problems in this positioning method: 1. The waiting position of the soft jaw has a certain arc length from the sensing position of the photoelectric switch. The positioning of the waiting position needs to be assisted by the encoder of the main motor of the coiler, so it is affected by its reliability and detection accuracy; 2. The influence of the thickness of the strip steel on the positioning accuracy is not considered, such as the deflection line of strip steel with different thicknesses under gravity Different belts help to roll strips of different thicknesses with different lengths of head lift; 3. The effect of secondary diameter expansion on positioning accuracy is not clear

Method used

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  • A method of controlling the positioning of the tape head on the soft jaw
  • A method of controlling the positioning of the tape head on the soft jaw
  • A method of controlling the positioning of the tape head on the soft jaw

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Effect test

no. 1 approach

[0051] The first embodiment of the present invention relates to a method for controlling the positioning of the tape head on the soft jaw, referring to figure 1 , including the following steps:

[0052] Step 1, the rubber sleeve 5 with the soft jaw 19 is set on the coiler 4, the diameter of the reel of the coiler 4 is expanded to a perfect circle, and the transmission side of the soft jaw 19 is provided with a reflective film 6;

[0053] Step 2, obtaining the thickness h of the steel strip to be recoiled, and judging whether the steel strip is a thick strip or a thin strip;

[0054] Step 3, if the strip steel is a thick strip, then rotate the rubber sleeve 5 until its soft jaw 19 faces the thick strip photoelectric switch C'12, and the position of the soft jaw 19 at this moment is the initial position C of the thick strip; if the strip steel If it is a thin strip, then rotate the rubber sleeve 5 until its soft jaw 19 is facing the thin strip photoelectric switch B'14. At this...

no. 2 approach

[0071] On the basis of the first embodiment, such as figure 2 with image 3 As shown, two columns are arranged between the coiler 4 and the steering roller 1, and the planes where the axial centerlines of the two columns are located are parallel to the axial centerline of the rubber sleeve 5 and the axial centerline of the steering roller 1 ;

[0072] One of the columns is a reflected light column 9, which is located on the same side as the operation side of the coiler 4. The top of the reflected light column 9 is fixedly connected with a base 8, and a reflector 7 is installed on the base 8. The reflector 7 Facing the lead detection photoelectric switch A'16;

[0073] The lead detection photoelectric switch A'16 emits light beams to the reflector 7, if there is no blockage, the light beam reflected by the reflector 7 is received by the lead detection photoelectric switch A'16, therefore, the role of the lead detection photoelectric switch A'16 and the reflector 7 is to dete...

no. 3 approach

[0079] On the basis of the second embodiment, in order to improve the positioning accuracy, this embodiment has made the following improvements:

[0080] The height of the reflected light column 9 is higher than the top of the rubber sleeve 5, and the tape head 3 passes between the reflector plate 7 and the tape head detection photoelectric switch A'16, and can block the light beam of the tape head detection photoelectric switch A'16.

[0081] The top of the photoelectric switch column 10 is lower than the bottom of the rubber sleeve 5, the position of the head detection photoelectric switch A'16 and the position of the thin strip photoelectric switch B'14 are fixed, and the position of the thick strip photoelectric switch C'12 is adjustable.

[0082] see Figure 4 ~ Figure 6 , the position of the thin strip photoelectric switch B′14 remains unchanged, that is, the starting position B of the thin strip remains unchanged, while the position of the thick strip photoelectric swit...

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Abstract

The invention protects a method for controlling the positioning of the tape head on the soft jaw. First, the diameter of the reel is expanded to a perfect circle, and then the thickness of the strip steel is obtained, and then the waiting switch is selected. The soft jaw stops at the waiting position, and then the tape is threaded to the tape head detection , and then drive the rubber sleeve to accelerate to a constant speed, and then the two move at a constant speed to help the second diameter expansion after rolling. In the present invention, the strip is divided into thin strip and thick strip according to the thickness of the strip, and through the selection of the soft jaw waiting position, the influence of the thickness of the strip on the positioning of the strip head, such as the different thickness of the strip under gravity The deflection line is different, and the length of the belt head is different when the belt is used to roll the strips of different thicknesses. Compensation is made, which is more in line with the actual situation on site, and the accuracy of the positioning of the belt head on the soft jaw is improved.

Description

technical field [0001] The invention belongs to the technical field of steel strip finishing, and in particular relates to a method for controlling the positioning of a strip head on a soft jaw. Background technique [0002] When the metal strip is coiled, the pinch roller is used to transfer the strip to the coiler. When the strip is wrapped on the reel, because the strip head has a certain thickness, the liner is lined with the strip. Under the action of force, a linear indentation is extruded at the position corresponding to the strip head in the first few turns of the strip steel, and this linear indentation is called "leading mark". The first ring of strip steel directly contacts the strip steel head, and the "leading mark" is the deepest. As the number of turns increases, the depth of the "leading mark" gradually decreases until it disappears. Usually, there are "leading marks" in the first 60-80 meters of a steel coil. ", if the thickness of the strip is large, the l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/00B21B15/00B21C47/02
CPCB21B15/00B21B37/00B21B2015/0057B21C47/02
Inventor 马续创王鹏孙亚波张康武靳恩辉李联飞
Owner CHINA NAT HEAVY MACHINERY RES INSTCO
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