TWI496624B - Method for measuring oil quantity and oil coating method using the same - Google Patents

Description

Oiling quantity measuring method and oiling method using the same

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 hot 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. In order to avoid rusting of the finished product after processing, the manufacturer usually applies a layer of anti-rust oil on the metal material to facilitate the preservation of the finished product. In general, the rust preventive oil coating of the hot rolled metal material is between 0.5 g/m2 and 3.5 g/m2. However, since the oil amount of the rust preventive oil is very thin, it is difficult to directly monitor the oil amount of the finished product on the hot rolled metal wire.

Most of the current technologies only use the target value of the predetermined oil quantity calculated by the flow of the fuel pump as the basis for the control of the processing process. However, if the nozzle of the rust preventive oil is clogged and the lack of coating occurs, the operator often cannot find the shortage in time due to the high speed movement of the production line. Paint condition. It is usually necessary to wait until the operator finds that the nozzle is clogged, and then use the hand-held oil film oil gauge to perform offline oil application to confirm the missing area.

Therefore, there is a need for an oil coating amount measuring method and an oiling method using the oil amount measuring method to overcome the problems of the above-mentioned prior art.

One aspect of the present invention is to provide a method for measuring the amount of oil to be applied to a hot-rolled metal material and an oiling method for applying 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 scattering 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 oiling measurement phase, a second infrared detecting step is first performed to scan the surface of the workpiece on the line by using a scattering infrared detector to obtain a second oil amount detecting signal. Next, according to the oil amount equation and the second oil The amount of detection signal is used to calculate the amount of oil applied.

According to another embodiment of the present invention, the processing 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, at least one workpiece sample is 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 scattering 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 oiling measurement phase, a second infrared detecting step is first performed to scan the surface of the workpiece on the line by using a scattering 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 scattering type infrared detector to scan the surface of the workpiece on the line to directly monitor the oil amount of the workpiece on the line to achieve instant monitoring of the amount of oil applied. The purpose of the oil coating method of the embodiment of the invention is to automatically control the oiling device by using the oil quantity measured by the oil quantity measuring method to achieve automatic Adjust the amount of fuel injection.

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

340‧‧‧scattering infrared detector

341‧‧‧Light source

342‧‧‧Filter wheel

343‧‧‧First detector

344‧‧‧Mirror

345‧‧‧Condenser

346‧‧‧Second detector

400‧‧‧Processing machine

410‧‧‧ oiling device

420‧‧‧Flying shears

430‧‧‧ nip rollers

450‧‧‧ coiler

500‧‧‧ oiling method

530‧‧‧Online oil control stage

532‧‧‧ threshold providing steps

534‧‧‧ Judgment steps

536‧‧‧ Warning steps

A1~A9‧‧‧Measurement area

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. A schematic flow chart of the method for measuring the amount of oil applied in the embodiment of the present invention.

Figure 2a is a schematic cross-sectional view showing three workpiece samples in accordance with 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 detector 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 quantity measuring method 100, the model establishing stage 110 is first performed to establish an oiling amount 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 amount detection signal of the scattering infrared detector and the oil amount. In the model establishment phase 110, the sample is first sampled. Step 112 is provided to provide at least three workpiece samples. Since the workpiece to be processed in this embodiment is a hot-rolled steel sheet, 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 hot-rolled steel sheet coated with an 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 hot-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 adjusted to the fourth decimal place, so that the unit area can be accurately calculated. The amount of oil. Please return to Figure 1. After the oil application value providing step 114, an infrared detecting step 116 is performed to scan the measurement areas of the workpiece samples S1 to S3 by using a scattering infrared detector to obtain a plurality of area detecting signals. please Referring to Figure 2b, there is shown a top plan view of a workpiece sample in accordance with an embodiment of the present invention. 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 the following description, the detection principle of the scattering infrared detector will be described in detail.

Please refer to FIG. 3, which is a structural exploded view of the scattering infrared detector 340 according to an embodiment of the invention. The scattering infrared detector 340 includes a light source 341, a filter wheel 342, a first detector 343, a mirror 344, a condensing mirror 345, a second detector 346, and a processor (not shown).

The light source 341 is for emitting light to the filter wheel 342 to utilize the filter wheel 342 to generate infrared light of a specific wavelength. In the present embodiment, the filter wheel 342 generates near-infrared light having a wavelength of 2.3 μm, but the embodiment of the present invention is not limited thereto. The first detector 343 is for detecting the intensity of the near-infrared light. The mirror 344 is for reflecting the near-infrared light onto the workpiece sample S, and collecting the infrared light scattered from the workpiece sample S by the collecting mirror 345, and projecting the light to the second detector 346. The second detector 346 is operative to detect the intensity of the light scattered back to the infrared detector 340 and to communicate the measured intensity to the processor.

The processor is configured to calculate the light intensity measured by the first detector 343 The difference between the degree and the light intensity measured by the second detector 346, and the oil amount detection signal is output according to the difference. This oil amount detection signal represents the amount of oil applied to the workpiece sample S. In the present embodiment, the scattering infrared detector 340 is an infrared detector produced by NDC Infrared Technology Co., Ltd., and its model is IG710e, but the embodiment of the present invention is 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 value obtained in step 111 by the infrared detecting step 116. The oil application value has been measured to calculate the oil application equation. In the present embodiment, the equation calculation step 118 uses the first-order algebraic equation as the relationship between the oil amount detection signal and the oil amount value. By substituting the oil quantity detection signal and the measured oil quantity value into the first-order algebraic equation, the coefficients of the first-order algebraic equation can be obtained, and the oil quantity equation is obtained. The equation calculation step 118 can be performed using a fitting method, for example, using interpolation or regression analysis to perform fitting of a first-order algebraic equation.

After the equation calculation step 118, an inline oil application measurement phase 120 is then performed to measure the amount of oil applied to the workpiece on the line. In the online oil application measurement stage 120, the infrared detection step 122 is first performed to scan the surface of the workpiece on the line by using the scattering infrared detector 340 to obtain the oil amount detection signal. Next, the oil amount calculation step 124 is performed to calculate the oil amount on the surface of the workpiece on the line by the oil amount equation and the oil amount measured by the infrared detecting step 122.

In the present embodiment, the oil application amount calculation step 124 and the equation calculation step 118 are performed using a computer. For example, connect your computer to scatter The infrared detector 340 receives the oil quantity detection signal output by the scattering infrared detector 340, and calculates the oil application amount according to the measured oil quantity value input by the user, and stores the coating amount. The oil quantity program is used to perform the oil amount calculation step 124.

It can be seen from the above description that the oil quantity measuring method 100 of the embodiment of the present invention uses the scattering type infrared detector 340 to scan the surface of the workpiece on the line to directly monitor the oil amount of the line workpiece, and achieve the instant monitoring coating. The purpose of the amount of oil.

4 and FIG. 5, FIG. 4 is a schematic structural view of a processing machine 400 according to an embodiment of the present invention, and FIG. 5 is a view showing a processing machine 400 according to an embodiment of the present invention. A schematic diagram of the process of the oiling method 500. In the present embodiment, the processing machine 400 automatically controls the amount of oil applied to the workpiece on the line by the oiling method 500 to avoid a situation in which the amount of oil is insufficient.

The processing machine 400 of the present embodiment includes an oiling device 410, a flying shear 420, a nip roller 430, a scattering infrared detector 340, a coiler 450, and a central control computer (not shown). The oil application device 410 is for applying rust preventive oil to the workpiece W. In the present embodiment, the oil application device 410 is an electrostatic oil application device, but the embodiment of the present invention is not limited thereto. The flying shear 420 is used to cut the workpiece W on the line to cut the workpiece W on the line according to the preset length. The coiler 450 is used to wind the cut workpiece W to wind it into a steel coil. The scattering type infrared detector 340 is for scanning the workpiece W to generate an oil amount detecting signal according to the amount of oil applied on the surface of the workpiece W. The central control computer is electrically connected to the scattering infrared detector 340 and the oiling device 410, controlling the oil application device 410 according to the oil amount detection signal of the scattering infrared detector 340.

In the oiling method 500, first, the oil amount measuring method 100 is performed to measure the amount of oil applied to the surface of the workpiece W on the wire. Next, an in-line oil amount control stage 530 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 530, a threshold providing step 532 is first performed to provide a preset low limit oil application threshold and a high limit oil application threshold. In the present embodiment, the preset oil application amount threshold is 0.6 g/m 2 , and the high limit oil application amount threshold is 3.4 g/m 2 , but the embodiment of the present invention is not limited thereto. Next, a determining step 534 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 result of the determination is yes, the amount of oil applied to the workpiece W on the line is insufficient or excessive, so the central control computer performs a warning step 536 to transmit the warning light and drive the buzzer sound, and warn the operator to control the oiling device. 410 to increase or decrease the amount of fuel injection, and to solve the abnormal situation of insufficient or excessive rust preventive oil.

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 scattering infrared detector 340 scans on the line workpiece W on a zig-zag path, the central control computer can obtain the rust-proof oil measurement of each measurement area on the path, so that it can be on the screen of the central control computer. The virtualized on-line workpiece W is displayed, and various colors are used to mark the rust-proof oil measurement of each measurement area on the virtualized line workpiece.

Although the present invention has been disclosed above in several embodiments, it is not In order to limit the present invention, any one of ordinary skill in the art to which the present invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. The scope defined by the patent scope shall prevail.

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 scattering 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 of scanning the surface of the workpiece on the line by using the scattering infrared detector to obtain a second oil amount detecting signal; and according to the oil amount formula and the second oil amount Detective 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 oil quantity measuring method according to claim 1, wherein the measured oil amount is between 0.5 g/m<2> and 3.5 g/m<2>. The method for measuring the amount of oil applied according to claim 1, wherein the first infrared detecting step and the second infrared detecting step are performed by using near-infrared light having a wavelength of 2.3 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 scattering 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 step comprises: performing a second infrared detecting step to utilize the scattering 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 0.5 g/m2 and 3.5 g/m2. The oiling method of claim 6, wherein the first infrared detecting step and the second infrared detecting step are performed by using near-infrared light having a wavelength of 2.3 μm.