A straight-line dry drawing platform steel wire diameter automatic detection method

Abstract

The application discloses a kind of straight-in dry drawing car platform steel wire diameter automatic detection methods, specific steps include: step one: the steel wire to be processed is sent into straight-in drawing machine, and makes the steel wire to be processed pass through the drawing die of straight-in drawing machine;Step two: utilize the drawing die of straight-in drawing machine to carry out drawing operation to steel wire, measure the diameter of steel wire after steel wire passes through drawing die, and compare the diameter of measured steel wire with the preset value of drawing die to steel wire diameter processing;Step three: repeat step one to step two, until the diameter of steel wire after steel wire passes through drawing die, steel wire diameter is greater than the preset value of drawing die to steel wire diameter processing.It can be found in the process of mold wear in dry drawing in time under the premise that production line does not stop compared with prior art, the mold that exceeds wear standard is replaced in advance, avoid mold abnormality to cause steel wire diameter not to meet standard, in addition, it can also guide staff to change mold, avoid to replace error or more mold, improve production efficiency.

Description

Technical Field

[0001] This invention relates to the field of steel cord production technology, and in particular to an automatic detection method for the diameter of steel wire on a straight-line dry-drawing machine. Background Technology

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

[0003] Appendix Figure 1 In the steel cord manufacturing process, during the initial drawing stage, a straight-line wire drawing machine is generally used for intermediate drawing. This machine is a processing device that uses a motor to pull the steel wire through a die to gradually reduce its diameter. Multiple dies are required, typically around 6-12, meaning the wire diameter needs to be reduced 6-12 times. During the wire deformation process, the diameter of the wire after each deformation needs to be measured periodically to ensure that the final dimensions and surface quality of the wire meet the requirements.

[0004] During the wire drawing process, the diameter of the steel wire is measured by personnel while the machine is stopped. However, due to the long production line, it takes a lot of time to measure, record, and verify the diameter of the steel wire while the machine is stopped, which leads to a decrease in production efficiency. Summary of the Invention

[0005] The main objective of this invention is to provide an automatic detection method for the wire diameter of a straight-line dry drawing machine. This method can detect the wear of the die during the dry drawing process in a timely manner without stopping the production line. Dies that exceed the wear standard can be replaced in advance to avoid die abnormalities that cause the wire diameter to be non-compliant. In addition, it can also guide employees to change dies, avoid incorrect or excessive die changes, and improve production efficiency.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: An automatic detection method for the diameter of steel wire in a straight-line dry-drawing machine includes the following steps: Step 1: Feed the steel wire to be processed into the straight-line wire drawing machine, and make the steel wire pass through the wire drawing die of the straight-line wire drawing machine; Step 2: Use the wire drawing die of the straight-line wire drawing machine to perform wire drawing operation, measure the diameter of the wire after passing through the wire drawing die, and compare the measured wire diameter with the preset value of the wire diameter processing of the wire drawing die; Step 3: Repeat steps 1 to 2 until the diameter of the wire is greater than the preset value for the wire diameter processing of the wire drawing die after the wire passes through the drawing die, and record the moving speed of the wire at this time; Step 4: During the wire drawing operation, detect the moving speed V of the wire after it passes through the drawing die. When the moving speed V is less than the wire moving speed recorded in Step 3, stop the machine and replace the drawing die.

[0007] Furthermore, the straight-line wire drawing machine has multiple wire drawing dies, performs the operations in steps one to three on the multiple wire drawing dies, and replaces the corresponding wire drawing dies using the method in step four.

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

[0009] Furthermore, multiple drawing dies and multiple winding devices are spaced apart, the winding devices being used to wind up the steel wire passing through the drawing dies.

[0010] Furthermore, each of the winding devices is equipped with a tension sensing device, which is used to sense changes in the tension of the steel wire in order to control the winding speed of the winding device.

[0011] Furthermore, the die holes of the plurality of wire drawing dies decrease in size sequentially.

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

[0013] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a method for detecting the diameter of steel wire without stopping the machine. It can detect the wear of the die in time during the dry drawing process, and replace the die in advance if the wear exceeds the standard, so as to avoid the steel wire diameter not meeting the standard due to die abnormality. In addition, it can also guide employees to change the die, avoid changing the wrong die or changing the die too many times, and improve production efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the steel cord production process of the present invention. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0016] Example 1: As Figure 1 As shown, an automatic detection method for the diameter of steel wire in a straight-line dry-drawing machine includes the following steps: Step 1: Feed the steel wire to be processed into the straight-line wire drawing machine, and make the steel wire pass through the wire drawing die of the straight-line wire drawing machine; Step 2: Use the wire drawing die of the straight-line wire drawing machine to perform wire drawing operation, measure the diameter of the wire after passing through the wire drawing die, and compare the measured wire diameter with the preset value of the wire diameter processing of the wire drawing die; Step 3: Repeat steps 1 to 2 until the diameter of the wire is greater than the preset value for the wire diameter processing of the wire drawing die after the wire passes through the drawing die, and record the moving speed of the wire at this time; Step 4: During the wire drawing operation, detect the moving speed V of the wire after it passes through the drawing die. When the moving speed V is less than the wire moving speed recorded in Step 3, stop the machine and replace the drawing die.

[0017] The straight-line wire drawing machine has multiple wire drawing dies. 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] The straight-line wire drawing machine has a number of winding devices equal to the number of wire drawing dies. Multiple wire drawing dies and multiple winding devices are arranged at intervals. The winding devices are used to wind up the steel wire passing through the wire drawing dies. Tension sensing devices are provided on the multiple winding devices to sense changes in the tension of the steel wire and control the winding speed of the winding devices. The straight-line wire drawing machine is existing technology and will not be described in detail here.

[0019] In this process, the die holes of the multiple wire drawing dies decrease in size sequentially.

[0020] The number of wire drawing dies is 6 to 12. Example 2

[0021] In a specific example, such as a 3.25-1.80 die chain, the speed of the steel wire from front to back and after passing through each die is as follows: mold 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 wire after passing through each die meets the preset value T for the wire diameter processing of this die, we get V=kV', where V' is the moving speed of the wire when the diameter of the wire after passing through the die is equal to the preset value T, V is the actual moving speed of the wire after passing through the die, and k is the deformation of the wire diameter after passing through the die.

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

[0023] Through batch testing on different machines and different die chains, the value of k was determined while ensuring that the finished steel wire was directly within the required range. For example, the value of k was set to 0.95. V' was directly measured, and the value of V was calculated using V=kV'. When the moving speed of the steel wire was equal to or less than the value of V, the die was replaced. This invention provides a method for detecting the diameter of steel wire without stopping the machine. It can detect the wear of the die in time during the dry drawing process, and replace the die in advance if the wear exceeds the standard, so as to avoid the steel wire diameter not meeting the standard due to die abnormality. In addition, it can also guide employees to change the die, avoid changing the wrong die or changing the die too many times, and improve production efficiency.

[0024] The principle is as follows: when the diameter of the steel wire increases as it passes through a certain mold, the increased diameter leads to increased tension during winding. 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 steel wire diameter by the change in the moving speed of the steel wire, and thus determine whether the mold is worn.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. An automatic detection method for the diameter of steel wire on a straight-line dry-drawing machine, characterized in that: The specific steps include: Step 1: Feed the steel wire to be processed into the straight-line wire drawing machine, and make the steel wire pass through the wire drawing die of the straight-line wire drawing machine; Step 2: Use the wire drawing die of the straight-line wire drawing machine to perform wire drawing operation, measure the diameter of the wire after passing through the wire drawing die, and compare the measured wire diameter with the preset value of the wire diameter processing of the wire drawing die; Step 3: Repeat steps 1 to 2 until the diameter of the wire is greater than the preset value for the wire diameter processing of the wire drawing die after the wire passes through the drawing die, and record the moving speed of the wire at this time; Step 4: During the wire drawing operation, detect the moving speed V of the wire after it passes through the drawing die. When the moving speed V is less than the wire moving speed recorded in Step 3, stop the machine and replace the drawing die.

2. The automatic detection method for the diameter of steel wire in a straight-line dry-drawing machine according to claim 1, characterized in that: The straight-line wire drawing machine has multiple wire drawing dies. 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.

3. The automatic detection method for the diameter of steel wire in a straight-line dry-drawing machine according to claim 2, characterized in that: The straight-line wire drawing machine has the same number of winding devices as the number of wire drawing dies.

4. The automatic detection method for the diameter of steel wire on a straight-line dry-drawing machine according to claim 3, characterized in that: Multiple drawing dies and multiple winding devices are spaced apart, the winding devices being used to wind up the steel wire passing through the drawing dies.

5. The automatic detection method for the diameter of steel wire in a straight-line dry-drawing machine according to claim 3, characterized in that: Each of the winding devices is equipped with a tension sensing device, which is used to sense changes in the tension of the steel wire in order to control the winding speed of the winding device.

6. The automatic detection method for the diameter of steel wire on a straight-line dry-drawing machine according to claim 2, characterized in that: The die holes of the multiple wire drawing dies decrease in size sequentially.

7. The automatic detection method for the diameter of steel wire on a straight-line dry-drawing machine according to claim 2, characterized in that: The number of wire drawing dies is 6 to 12.

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