Method for automatically detecting diameter of steel wire of straight-feed dry-pulling trolley platform

Abstract

The invention discloses a method for automatically detecting the diameter of a steel wire of a straight-feed type dry-pulling trolley platform, which comprises the following specific steps of: 1, feeding the steel wire to be processed into a straight-feed type wire drawing machine, and enabling the steel wire to be processed to pass through a wire drawing die of the straight-feed type wire drawing machine; 2, performing wire drawing operation on the steel wire by using a wire drawing die of the straight wire drawing machine, measuring the diameter of the steel wire after the steel wire passes through the wire drawing die, and comparing the measured diameter of the steel wire with a preset value of the wire drawing die for processing the diameter of the steel wire; and step 3, repeating the step 1 to the step 2 until the diameter of the steel wire is greater than a preset value for processing the diameter of the steel wire by the wire-drawing die after the steel wire passes through the wire-drawing die. Compared with the prior art, on the premise that a production line is not stopped, the abrasion condition of the mold in the dry drawing process can be found in time, the mold exceeding the abrasion standard is replaced in advance, the situation that the diameter of a steel wire does not meet the standard due to mold abnormity is avoided, in addition, staff can be guided to replace the mold, wrong replacement or excessive replacement of the mold is avoided, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel cord production, and in particular to an automatic detection method for the diameter of a steel wire on a straight-through dry-pulling platform. Background Art

[0002] Straight-type wire drawing machines are mainly used for drawing high, medium and low carbon steel wires, stainless steel wires, copper wires, alloy copper wires, aluminum alloy wires and other metal wires to produce metal wires and tubes of different thicknesses and specifications.

[0003] Attached Figure 1 For the steel cord process, in the front-end drawing, the middle drawing generally uses a straight-feed wire drawing machine, which is a processing equipment that uses a motor to pull the steel wire in a die to gradually reduce the diameter of the steel wire. It requires multiple dies, generally about 6-12, which means that the process of reducing the steel wire diameter needs to be carried out 6-12 times. During the deformation of the steel wire, the diameter of the deformed steel wire needs to be measured regularly to ensure that the size and surface quality of the steel wire meet the composite requirements when it is finally deformed.

[0004] During the wire drawing process, the measurement of the wire diameter is performed by personnel when the machine is stopped. However, due to the long production line, it takes a lot of time to stop the machine to measure the wire diameter and record and check it, which will lead to a decrease in production efficiency. Summary of the invention

[0005] The main purpose of the present invention is to provide an automatic detection method for the diameter of steel wire of a straight-in dry-drawing platform, which can timely discover the wear of the mold during the dry-drawing process without stopping the production line, and replace the mold that exceeds the wear standard in advance to avoid the steel wire diameter not meeting the standard due to mold abnormalities. In addition, it can also guide employees to change molds to avoid replacement errors or multiple mold changes, thereby improving production efficiency.

[0006] To achieve the above object, the technical solution adopted by the present invention is: A method for automatically detecting the diameter of a straight-through dry-pulling platform wire, the specific steps comprising: Step 1: feeding the steel wire to be processed into a straight-feed wire drawing machine, and passing the steel wire to be processed through the wire drawing die of the straight-feed wire drawing machine; Step 2: Use the wire drawing die of the straight-through wire drawing machine to draw the steel wire, measure the diameter of the steel wire after it passes through the wire drawing die, and compare the measured wire diameter with the preset value of the wire diameter processing by the wire drawing die; Step 3: Repeat steps 1 to 2 until the diameter of the steel wire is greater than the preset value of the wire drawing die for the steel wire diameter after the steel wire passes through the wire drawing die, and record the moving speed of the steel wire at this time; Step 4: During the wire drawing operation, detect the moving speed V of the wire after passing through the wire drawing die. When the moving speed V is less than the moving speed of the wire recorded in step 3, stop the machine and replace the wire drawing die.

[0007] Furthermore, the straight-through wire drawing machine has a plurality of wire drawing dies, and the operations in steps one to three are performed on the plurality of wire drawing dies, and the corresponding wire drawing dies are replaced using the method in step four.

[0008] Furthermore, the straight-feed wire drawing machine has winding devices with the same number as the wire drawing dies.

[0009] Furthermore, a plurality of the wire drawing dies and a plurality of winding devices are arranged at intervals, and the winding device is used to wind up the steel wire passing through the wire drawing dies.

[0010] Furthermore, a plurality of the winding devices are provided with tension sensing devices, and the tension sensing devices are used to sense the tension change of the steel wire to control the winding speed of the winding device.

[0011] Furthermore, the die holes of the plurality of wire drawing dies become smaller in sequence.

[0012] Furthermore, the number of the wire drawing dies is 6 to 12.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a method for detecting the diameter of a steel wire without stopping the machine. The method can timely discover the wear of the mold during the dry drawing process, and replace the mold that exceeds the wear standard in advance to avoid the steel wire diameter not meeting the standard due to mold abnormality. In addition, the method can also guide employees to change molds to avoid replacement errors or multiple mold changes, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the steel cord production process of the present invention. DETAILED DESCRIPTION

[0015] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0016] Example 1: Figure 1 As shown, a method for automatically detecting the diameter of a straight-through dry-pull platform wire comprises the following specific steps: Step 1: feeding the steel wire to be processed into a straight-feed wire drawing machine, and passing the steel wire to be processed through the wire drawing die of the straight-feed wire drawing machine; Step 2: Use the wire drawing die of the straight-through wire drawing machine to draw the steel wire, measure the diameter of the steel wire after it passes through the wire drawing die, and compare the measured wire diameter with the preset value of the wire diameter processing by the wire drawing die; Step 3: Repeat steps 1 to 2 until the diameter of the steel wire is greater than the preset value of the wire drawing die for the steel wire diameter after the steel wire passes through the wire drawing die, and record the moving speed of the steel wire at this time; Step 4: During the wire drawing operation, detect the moving speed V of the wire after passing through the wire drawing die. When the moving speed V is less than the moving speed of the wire recorded in step 3, stop the machine and replace the wire drawing die.

[0017] Wherein, the straight-line wire drawing machine has multiple wire drawing dies, and the operations in steps one to three are performed on the multiple wire drawing dies, and the corresponding wire drawing dies are replaced using the method in step four.

[0018] Among them, the straight-feed wire drawing machine has a winding device with the same number as the wire drawing dies, and multiple wire drawing dies and multiple winding devices are arranged at intervals. The winding device is used to wind up the steel wire passing through the wire drawing dies. Multiple winding devices are provided with tension sensing devices, and the tension sensing devices are used to sense the tension changes of the steel wire to control the winding speed of the winding device. The straight-feed wire drawing machine is a prior art and will not be described in detail here.

[0019] Among them, the die holes of the multiple drawing dies become smaller in sequence.

[0020] Wherein, the number of the wire drawing dies is 6 to 12. Example 2

[0021] For a specific example, for a 3.25-1.80 die chain, the speed of the wire from front to back and after each die is as follows: path Incoming line Track 1 Track 2 Track 3 Track 4 Track 5 Track 6 Track 7 Mould mm 3.25 2.95 2.68 2.45 2.25 2.08 1.93 1.80 Speed ​​m / s 2.55 3.09 3.74 4.48 5.31 6.22 7.22 8.30 ; When the diameter of the steel wire after passing through each die meets the preset value T of the steel wire diameter processing of this die, V=kV' is obtained, where V' is the moving speed of the steel wire when the diameter of the steel wire after passing through the die is equal to the preset value T, V is the actual moving speed of the steel wire after passing through the die, and k is the deformation of the steel wire diameter after passing through the die.

[0022] When the mold is not worn, the diameter of the steel wire after passing through the mold is equal to the preset value T, that is, k is 1. When the mold is worn, the diameter of the steel wire after passing through the mold is greater than the preset value T, and the deformation of the steel wire diameter is insufficient, that is, k is less than 1.

[0023] Through batch tests on different lathes and different die chains, the k value is determined under the premise of ensuring that the finished steel wire is directly in the required range. For example, the k value is 0.95, V' is directly measured, and the V value is calculated by V=kV'. When the moving speed of the steel wire is equal to or less than the V value, the die is replaced. The present invention provides a method for detecting the diameter of a steel wire without stopping the machine. The method can timely discover the wear of the mold during the dry drawing process, and replace the mold that exceeds the wear standard in advance to avoid the steel wire diameter not meeting the standard due to mold abnormality. In addition, the method can also guide employees to change molds to avoid replacement errors or multiple mold changes, thereby improving production efficiency.

[0024] The principle is: when the diameter of the steel wire increases after passing through a certain die, the increase in the diameter of the steel wire will cause the tension to increase when the steel wire is wound. Therefore, the winding device will reduce the winding speed under the adjustment of the tension sensing device, thereby reducing the moving speed of the steel wire. This allows personnel to judge the change in the diameter of the steel wire by the change in the moving speed of the steel wire, thereby determining whether the die is worn.

[0025] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for automatically detecting the diameter of a straight-through dry-pulling platform wire, characterized in that: The specific steps include: Step 1: feeding the steel wire to be processed into a straight-feed wire drawing machine, and passing the steel wire to be processed through the wire drawing die of the straight-feed wire drawing machine; Step 2: Use the wire drawing die of the straight-through wire drawing machine to draw the steel wire, measure the diameter of the steel wire after it passes through the wire drawing die, and compare the measured wire diameter with the preset value of the wire diameter processing by the wire drawing die; Step 3: Repeat steps 1 to 2 until the diameter of the steel wire is greater than the preset value of the wire drawing die for the steel wire diameter after the steel wire passes through the wire drawing die, and record the moving speed of the steel wire at this time; Step 4: During the wire drawing operation, detect the moving speed V of the wire after passing through the wire drawing die. When the moving speed V is less than the moving speed of the wire recorded in step 3, stop the machine and replace the wire drawing die.

2. The method for automatically detecting the diameter of a straight-through dry-pull platform wire according to claim 1, characterized in that: The straight-through wire drawing machine has a plurality of wire drawing dies, and the operations in steps one to three are performed on the plurality of wire drawing dies, and the corresponding wire drawing dies are replaced using the method in step four.

3. The method for automatically detecting the diameter of a straight-through dry-pulling platform wire according to claim 2 is characterized in that: The straight-through wire drawing machine has the same number of winding devices as the wire drawing dies.

4. The method for automatically detecting the diameter of a straight-through dry-pull platform wire according to claim 3, characterized in that: A plurality of the wire drawing dies and a plurality of winding devices are arranged at intervals, and the winding devices are used for winding the steel wire passing through the wire drawing dies.

5. The method for automatically detecting the diameter of a straight-through dry-pulling platform wire according to claim 3 is characterized in that: A tension sensing device is provided on the plurality of winding devices, and the tension sensing device is used to sense the tension change of the steel wire to control the winding speed of the winding device.

6. The method for automatically detecting the diameter of a straight-through dry-pulling platform wire according to claim 2, characterized in that: The die holes of the plurality of wire drawing dies become smaller in sequence.

7. The method for automatically detecting the diameter of a straight-through dry-pulling platform wire according to claim 2 is characterized in that: The number of the wire drawing dies is 6 to 12.

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