TW201501827A - Method for measuring low oil quantity and oil coating method using the same - Google Patents

Abstract

A method for measuring low oil quantity and a oil coating method using the same are provided. In the method for measuring oil quantity, at first, a sample workpiece on which oil is coated and a plurality of measured oil quantity values are provided. Then, a reflection absorption infrared detector is used to scan the sample workpiece to obtain a plurality of first coating weight detection signals. Thereafter, an oil quantity function is calculated in accordance with the first coating weight detection signals and the measured oil quantity values. Then, the reflection absorption infrared detector is used to scan an online workpiece to obtain a second coating weight detection signal. Thereafter, an oil quantity value is calculated in accordance with the second coating weight detection signal and the oil quantity function. In the oil coating method, at first, the method for measuring oil quantity is applied to calculate the oil quantity value of the online workpiece. Thereafter, an oil coating device is controlled in accordance with the oil quantity value.

Description

Low oil quantity measurement method and oil application method using the oil quantity measurement method

The invention relates to a method for measuring oil quantity and an oiling method for applying the oil quantity measuring method, in particular to a method for measuring oil quantity of a cold rolled metal material and applying the oil quantity measurement Method of oiling method.

With the rapid development of the economy and the rapid advancement of machining technology, it has been possible to process materials into desired shapes through various processing machines. For example, a rolling mill is used to roll a metal material into a sheet shape, and a general rolling process can be further divided into cold rolling and hot rolling. For example, cold-rolled steel sheets in barrels are used to avoid rusting of cold-rolled steel sheets before downstream processing. Manufacturers usually require a special thin layer of anti-rust oil to be applied to the steel sheet material, which can be processed directly without cleaning. In general, the amount of rust preventive oil applied to the cold-rolled steel sheet of the barrel is between 50 mg/m2 and 250 mg/m2. However, since the oil amount of the rust preventive oil is very thin, it is difficult to directly monitor and measure the oil amount of the cold rolled steel sheet on the line.

Most of the current technologies only use the target value of the predetermined oil quantity calculated by the injection pump flow as the control basis for the anti-rust oil process. However, if the nozzle of the rust preventive oil is clogged, the lack of coating occurs. At times, it is often because of the high-speed movement of the production line that the operator cannot find the lack of coating in time. It is usually necessary to wait until the operator finds that the nozzle is clogged, and then use the hand-held oil film thickness gauge to perform an off-line test to detect the oil amount to confirm the missing area.

Therefore, there is a need for an oil coating method capable of measuring the on-line low oil amount and applying the oil amount measuring method to overcome the problems of the above-mentioned prior art.

One aspect of the present invention is a method for measuring the amount of oil applied to a cold-rolled metal material and an oiling method using the method for measuring the amount of oil. The oil quantity measurement method can directly monitor the oil quantity of the finished product on the line to calculate the oil quantity of the finished product on the line. The oiling method applies the above-described oiling amount measuring method to control the oiling device of the processing machine according to the measured oiling amount to automatically adjust the fuel injection amount.

According to an embodiment of the present invention, the oil quantity measuring method includes a model establishing stage and an online oiling amount measuring stage. In the model building phase, three workpiece samples are first provided, wherein at least two of the three workpiece samples are coated with oils of varying oil content. Next, the measured oil amount value corresponding to each workpiece sample is provided. Then, a first infrared detecting step is performed to scan the measurement area on the surface of the workpiece sample by using a reflective infrared detector to obtain a plurality of first oil amount detecting signals. Then, the oil amount equation is calculated based on the first oil amount detection signal and the measured oil amount value. Then, the on-line oil measurement phase is performed. Apply oil on line In the measurement phase, a second infrared detecting step is first performed to scan the surface of the workpiece on the line by using a reflective infrared detector to obtain a second oil amount detecting signal. Next, the oil amount value is calculated according to the oil amount equation and the second oil amount detecting signal.

According to another embodiment of the present invention, the oiling method includes a model establishment phase, an online oil application measurement phase, and an online oil application amount control phase. In the model building phase, three workpiece samples are first provided, wherein at least two of the three workpiece samples are coated with oils of varying oil content. Next, the measured oil amount value corresponding to each workpiece sample is provided. Then, a first infrared detecting step is performed to scan the measurement area on the surface of the workpiece sample by using a reflective infrared detector to obtain a plurality of first oil amount detecting signals. Then, the oil amount equation is calculated based on the first oil amount detection signal and the measured oil amount value. Then, the on-line oil measurement phase is performed. In the online oil coating measurement phase, a second infrared detecting step is first performed to scan the surface of the workpiece on the line by using a reflective infrared detector to obtain a second oil amount detecting signal. Next, the oil amount value is calculated according to the oil amount equation and the second oil amount detecting signal. Then, the line oil control phase is performed. In the online oil quantity control phase, the preset oil application threshold is first provided. Then, it is judged whether the oil amount of the workpiece on the line is less than the preset oil amount threshold to provide a judgment result. Next, when the result of the determination is YES, the oiling device is controlled to increase the amount of oil applied to the workpiece on the wire.

It can be seen from the above description that the method for measuring the amount of oil applied in the embodiment of the present invention uses a reflective infrared detector to scan the surface of the workpiece on the line to The oiling amount of the workpiece on the line is monitored to achieve the purpose of monitoring the oiling amount in an instant, and the oiling method of the embodiment of the invention automatically controls the coating by the amount of oil measured by the oil quantity measuring method. Oil device to achieve the purpose of automatically adjusting the fuel injection amount.

100‧‧‧ oil quantity measurement method

110‧‧‧Model establishment phase

112‧‧‧ Sample supply steps

114‧‧‧Provide steps for oil filming

116‧‧‧Infrared detection steps

118‧‧‧ Equation calculation steps

120‧‧‧Online oil measurement stage

122‧‧‧Online infrared detection steps

124‧‧‧ Oil film oiling calculation steps

500‧‧‧Processing machine

510‧‧‧ oiling device

520‧‧‧Flying shears

530‧‧‧steering roller

540‧‧‧Reflective infrared probe

541‧‧‧Light source

542‧‧‧Filter wheel

543‧‧‧ polarizer

544‧‧‧beam splitter

545‧‧‧Sub detector

546‧‧‧Mirror

547‧‧‧Condenser

548‧‧‧Main detector

550‧‧‧ coiler

600‧‧‧ oiling method

630‧‧‧Control phase of oil application

632‧‧‧ threshold providing steps

634‧‧‧ Judgment steps

636‧‧‧ Warning steps

A1~A9‧‧‧Measurement area

E‧‧‧Infrared out/in window

M1~M3‧‧‧ metal layer

O1~O3‧‧‧ oil film

S1~S3‧‧‧ workpiece samples

W‧‧‧Workpiece

The above and other objects, features, and advantages of the present invention will become more apparent and understood.

FIG. 1 is a schematic flow chart showing a method for measuring the amount of oil applied according to an embodiment of the present invention.

Fig. 2a is a schematic cross-sectional view showing three workpiece samples S1 to S3 according to an embodiment of the present invention.

Figure 2b is a top plan view of a workpiece sample in accordance with an embodiment of the present invention.

3 is a structural exploded view of a reflective infrared probe according to an embodiment of the present invention.

Figure 4 is a schematic view showing the structure of a processing machine according to an embodiment of the present invention.

Fig. 5 is a flow chart showing a method of applying oil to a processing machine according to an embodiment of the present invention.

Please refer to FIG. 1 , which is a schematic flow chart of a method for measuring oil quantity according to an embodiment of the present invention. In the oil amount measuring method 100, First, a model establishment phase 110 is performed to establish an oil rust resistance oil layer equation. The model establishing stage 110 of the embodiment performs a simulation test on the sample of the workpiece to be processed to establish a relationship between the oil absorption detecting signal of the reflective absorption infrared detector and the oil amount of the rust preventive oil layer. In the model building phase 110, a sample providing step 112 is first performed to provide at least three workpiece samples. Since the workpiece to be treated in this embodiment is a cold-rolled steel sheet of barrel material, and the oil on the workpiece is an anti-rust oil, such as an organic anti-rust mineral oil, the workpiece sample is also a cold-rolled steel sheet coated with anti-rust oil. Next, an oil application value providing step 114 is performed to provide a plurality of measured oil application values.

For the preparation of the known oil film thickness oil test piece, please refer to FIG. 2a, which is a schematic cross-sectional structural view of three workpiece samples S1 to S3 according to an embodiment of the present invention. . In this embodiment, the surface area of each workpiece sample is 10 cm in length and length for the subsequent fine weighing step, wherein different cold-rolled steel sheet workpiece samples are uniformly coated with different films by high, medium and low distribution. Thick oil quantity. For example, in the present embodiment, the metal layer M1 of the workpiece sample S1 is coated with a high oil-coated oil film O1, the metal layer M2 of the workpiece sample S2 is coated with a medium oil-coated oil film O2, and the metal layer of the workpiece sample S3. M3 is coated with a low oil-coated oil film O3. In other embodiments of the present invention, the oil amount of the low oil amount oil film O3 of the workpiece sample S3 may be 0, that is, no oil is applied.

In addition, in the present embodiment, the anti-rust oil is stained with the non-fibrous paper, and the anti-rust oil is uniformly applied to the surface of the cold-rolled steel sheet by using the non-fibrous paper to form a workpiece sample. Since the amount of oil applied to the workpiece sample is very thin, the amount of oil applied must be scaled using a four-digit analytical balance, and the scale is The fourth decimal place, in order to accurately calculate the oil per unit area.

Please return to Figure 1. After the step of providing the oil level of the workpiece sample S is analyzed, the infrared detecting step 116 is performed to illuminate the measurement area of the workpiece samples S1 to S3 by using a reflective infrared probe detector. Multiple area detection signals. Referring to Figure 2b, a top view of a workpiece sample in accordance with an embodiment of the present invention is shown. In the present embodiment, nine measurement areas A1 to A9 are defined on the surface of each workpiece sample, and the size of each measurement area is consistent with the size of the probe. When the reflective infrared probe detector scans the over-test area A1~A9, six area detection signals are obtained, and the six area detection signals are the oil-measures corresponding to the measurement areas A1~A9. Test signal. Since the six measurement areas A1~A9 cover most of the area on the surface of the workpiece sample, the values of the six area detection signals are averaged to obtain the oil quantity detection signal corresponding to the workpiece sample.

In addition, the oil application quantity providing step 114 of the embodiment of the present invention directly coats the measuring area S1 of the workpiece sample S by using the SR710 measuring head of the NDC manufacturer which measures the oil amount on the line. The amount of oil can avoid additional errors caused by the oil film being touched to strengthen the model building stage 114.

In the following description, the detection principle of the reflective infrared detector will be described in detail. Please refer to FIG. 3, which is a structural diagram of a reflective infrared absorption detector 540 of an NDC manufacturer according to an embodiment of the present invention. The reflective infrared absorption detector 540 includes a light source 541, a filter wheel 542, a polarizer 543, a beam splitter 544, a sub detector 545, a mirror 546, A condensing mirror 547, a main detector 548, and a processor (not shown).

The light source 541 is for emitting to the filter wheel 542 to utilize the filter wheel 542 to generate infrared light of a specific wavelength. In the present embodiment, the filter wheel 542 generates infrared light having a wavelength of 3.4 μm to measure the intensity of the C-H chemical bond absorption wavelength of the organic compound in the oil coating layer of 3.4 μm, but the embodiment of the present invention is not limited thereto. The polarizer 543 is used to polarize the infrared light generated by the filter wheel 542 to provide polarized infrared light. The polarized light can eliminate the interference caused by the reflection when it is projected onto the surface of the coating film, and improve the detection accuracy. The beam splitter 544 is used to separate a portion of the polarized infrared light and project it to the sub detector 545 to check whether the light of the light source 541 is stable by the sub detector 545. The mirror 546 is configured to project the polarized infrared light through the window onto the workpiece sample S, and use the condensing mirror 547 to collect the polarized infrared light reflected from the workpiece sample S and then transmitted through the window, and then project the light to Main detector 548. The primary detector 548 is used to detect the intensity of the infrared light that is reflected and absorbed by the film and to transmit the measured intensity to the processor.

The processor is configured to calculate a ratio of the intensity of the 3.4 micron wavelength infrared light absorbed by the main detector 548 to the unabsorbed infrared reference wavelength intensity, and output the oil quantity detection signal according to the ratio. This oil amount detection signal represents the amount of oil applied to the workpiece sample S. It is worth noting that since the beam splitter 544 has separated a portion of the light, the processor may consider correcting the intensity of the separated light when calculating the ratio. In this embodiment, the reflective infrared detector 540 is an infrared detector produced by NDC Infrared Technology Co., Ltd., and its model is SR710, but Embodiments of the invention are not limited thereto.

Returning to FIG. 1, after the infrared detecting step 116, the equation calculating step 118 is performed to provide the oil amount detecting signal and the oil amount providing step 114 according to the infrared detecting step 116. The amount of oil applied is measured to calculate the oil amount equation. In the present embodiment, the equation calculation step 118 uses the first-order algebraic equation as the relationship between the detection signal and the oil application value of the oil coating layer. By substituting the detection signal of the oil layer and the measured oil quantity into the first-order algebraic equation, the coefficients of the first-order algebraic equation can be obtained, and the oil-filming equation of the oil film can be obtained. For example, in this embodiment, three workpiece samples S1 to S3 are provided, and after the infrared detecting step 116, each workpiece sample corresponds to a measured oil amount value and an oil amount detecting signal. By using the measured oil quantity and oil quantity detection signal corresponding to each workpiece sample to calculate the first-order algebraic equation, the detection signal and the oil quantity value between the oil coating layer can be obtained. Relationship (ie oil quantity equation).

After the equation calculation step 118, an on-line oil film oiling measurement stage 120 is then performed to measure the oil application amount of the oil film on the line workpiece. In the on-line oil film measurement stage 120, an infrared detection step 122 is first performed, and the surface of the workpiece on the illumination line is scanned back and forth by the reflective infrared probe detector 540 to obtain an oil film coating layer detection signal. Next, the oiling amount calculation step 124 is performed to calculate the oil amount of the oil film layer on the surface of the workpiece by using the oil film layer oil amount equation and the oil film layer signal measured by the infrared detecting step 122.

In the present embodiment, the oil coating amount calculation step 124 and the square of the oil film layer The program calculation step 118 is performed using a computer. For example, the computer is connected to the reflective infrared detector 540 to receive the oil film detection signal output by the reflective infrared detector 540, and the oil film layer is calculated according to the oil quantity obtained by the user. The oil quantity program is stored, and the oil amount program of the oil film layer is stored to facilitate the oil film amount calculation step 124 of the oil film layer.

It can be seen from the above description that the oil coating amount measuring method 100 of the embodiment of the present invention scans the surface of the workpiece on the irradiation line by using the reflective infrared detector 540 to directly monitor the oil coating film of the line workpiece, and achieves the instant monitoring coating. The purpose of the amount of oil. Moreover, since the reflective infrared detector 540 scans the workpiece with the polarized infrared rays, the oil amount measuring method 100 is not interfered by the reflected light, thereby providing an accurate measurement of the oil amount. According to the oil quantity measuring method 100 of the embodiment of the invention, the processing worker can know the oil quantity of the oil film layer of the line workpiece at any time during the online processing process, so that the abnormal condition can be taken immediately Strain measures.

4 and FIG. 5, FIG. 4 is a schematic structural view of a processing machine 500 according to an embodiment of the present invention, and FIG. 5 is a view showing a processing machine 500 according to an embodiment of the present invention. A schematic flow diagram of the oiling method 600. In the present embodiment, the processing machine 500 automatically controls the amount of oil applied to the workpiece on the line by the oiling method 600 to avoid a situation in which the amount of oil is insufficient.

The processing machine 500 of the present embodiment includes an oiling device 510, a flying shear 520, a reflective infrared detector 540, a steering roller 550, a coiler 560, and a central control computer (not shown). Oiling device 510 is used to put anti-rust oil It is applied to the workpiece W. In the present embodiment, the oil application device 510 is a rotary atomization oil application device, but the embodiment of the present invention is not limited thereto. The flying shear 520 is used to cut the workpiece W on the line after oiling to cut the workpiece W on the line according to the preset length. The steering roller 550 is used to guide the workpiece to be steered, and the coiler 560 is used to wind the cut workpiece W to wind it into a steel coil. The reflective infrared probe 540 is used to scan and illuminate the workpiece W to generate an oil amount detection signal. The central control computer is electrically connected to the reflective infrared probe 540 and the process main control computer to feed back the oil amount of the transverse and vertical directions of the steel coil according to the measured oil quantity of the reflective infrared probe 540. The string process parameters are established, or a two-dimensional oil distribution distribution diagram of the full width of the steel coil is presented in front of the operator to facilitate adjustment and control of the oil application device 510.

In the oiling method 600, first, the oil amount measuring method 100 is performed to measure the oil amount of the oil film layer on the surface of the workpiece W on the wire. Next, an in-line oiling amount control stage 630 is performed to control the amount of oil applied to the surface of the workpiece W on the wire. In the on-line oil level control phase 630, a threshold providing step 632 is first performed to provide a preset low limit oil application threshold and a high limit oil application threshold. In the present embodiment, when the oil application amount is 100 mg/m 2 as the target value, the preset low limit oil application threshold is 70 mg/m 2 , and the preset high limit oil application threshold is 130 mg / The square meter, but the embodiment of the invention is not limited thereto. Next, a determining step 634 is performed to determine whether the amount of oil measured by the oil amount measuring method 100 is less than a preset low oiling amount threshold or greater than a high limit oiling amount threshold. If the judgment result is yes, the amount of oil applied to the workpiece W on the line is not appropriate, so the central control computer must be operated to perform the warning step 636 to transmit the warning light and drive the buzzer sound, and the police The operator is informed to control the oiling device 510 to increase or decrease the amount of fuel injection, and to solve the abnormal condition of the rust preventive oil in an appropriate manner.

In addition, it is worth mentioning that the central control computer of the embodiment can utilize the visualize effect to present the distribution of the anti-rust oil on the workpiece W on the line. For example, when the reflective infrared probe 540 scans on the line workpiece W in a zigzag path, the central control computer can obtain the oil quantity of the rustproof oil film in each measurement area on the path, so that the central control unit can be controlled. The virtualized on-line workpiece W is displayed on the screen of the computer, and various colors are used to mark the amount of oil on the rust-proof oil film layer of each measurement area on the workpiece on the virtualized line.

While the invention has been described above in terms of several embodiments, it is not intended to limit the scope of the invention, and the invention may be practiced in various embodiments without departing from the spirit and scope of the invention. The scope of protection of the present invention is defined by the scope of the appended claims.

100‧‧‧ oil quantity measurement method

110‧‧‧Model establishment phase

112‧‧‧ Sample supply steps

114‧‧‧ Oil supply value providing steps

116‧‧‧Infrared detection steps

118‧‧‧ Equation calculation steps

120‧‧‧Online oil measurement stage

122‧‧‧Infrared detection steps

124‧‧‧ oil quantity calculation steps

Claims (10)

A method for measuring oil quantity, comprising: performing a model establishment stage to establish an oil quantity equation, wherein the model establishment stage comprises; providing three workpiece samples, wherein at least two of the workpiece samples are coated on the surface An oil having a different amount of oil is supplied; a measured oil value is provided for each of the workpiece samples; and a first infrared detecting step is performed to scan each of the workpiece samples by using a reflective infrared detector a plurality of measurement areas on the surface to obtain a plurality of first oil quantity detection signals; and calculating the oil quantity according to the first oil quantity detection signals and the measured oil quantity values a quantity equation; and performing a line oil measurement phase to measure a coating amount of the oil coated on one surface of the workpiece on the line, wherein the line oiling measurement stage comprises: performing one a second infrared detecting step for scanning the surface of the workpiece on the line by using the reflective infrared detector to obtain a second oil amount detecting signal; and according to the oil amount formula and the second oiling the amount Sense signal to calculate the magnitude of the oil coating. The method for measuring the amount of oil applied according to claim 1, wherein the oil is organic. The method for measuring oil quantity as described in claim 2, wherein The oil is an organic rust preventive mineral oil. The method for measuring oil quantity according to claim 1, wherein the measured oil amount is between 50 mg/m 2 and 200 mg/m 2 . The method for measuring oil quantity according to claim 1, wherein the first infrared detecting step and the second infrared detecting step are performed by using polarized infrared rays having a wavelength of 3.4 μm. An oiling method for controlling an oiling device to apply an oil to a workpiece on a line, wherein the oiling method comprises: performing a model establishing phase to establish an oil quantity equation, wherein the model is established Included; providing three workpiece samples, wherein at least two of the workpiece samples are coated with oil having different oil contents; providing one of each of the workpiece samples has been measured for oil quantity; performing a first infrared detection a step of scanning a plurality of measurement areas on the surface of each of the workpiece samples by using a reflective infrared detector to obtain a plurality of first oil quantity detection signals; and according to the first oil quantity Detecting the signal and the measured oil quantity values to calculate the oil quantity equation; performing a line oil quantity measurement stage to measure one of the oil materials coated on one surface of the line workpiece An oil application amount, wherein the line oil measurement phase comprises: performing a second infrared detection step to utilize the reflective infrared The line detector scans the surface of the workpiece on the line to obtain a second oil quantity detection signal; and calculates the oil quantity value according to the oil quantity equation and the second oil quantity detection signal And performing a line oil quantity control stage, comprising: providing a preset oil quantity threshold; determining whether the oil quantity value is less than the preset oil quantity threshold to provide a judgment result; and when determining When the result is YES, the oiling device is controlled to increase the amount of oil applied to the workpiece on the line. The oiling method of claim 6, wherein the oil is an organic material. The oiling method of claim 7, wherein the oil is an organic rust preventive mineral oil. The oiling method of claim 6, wherein the measured oil amount is between 50 mg/m2 and 200 mg/m2. The oiling method of claim 6, wherein the first infrared detecting step and the second infrared detecting step are performed by using polarized infrared rays having a wavelength of 3.4 μm.