TWM637974U - Device for detecting the thickness of metal coating - Google Patents

Abstract

The present disclosure provides a device for detecting the thickness of metal coating, which is suitable for detecting the coating thickness value on the surface of a metal rod, characterized by comprising: an eddy current sensor with an annular hollow structure and a conveying devices for conveying metal rod, the eddy current sensor senses the eddy current value of the metal rod in the annular hollow structure, wherein the eddy current value corresponds to the coating thickness value of the metal rod. The conveying device for conveying metal rods through the annular hollow structure of the eddy current sensor, wherein the conveying device has a two-stage structure, including a first-stage conveying structure and a second-stage conveying structure, and the eddy current sensor is disposed between the first-stage conveying structure and the second-stage conveying structure.

Description

Metal coating thickness detection device

The present disclosure relates to a film thickness detection device, and in particular to a metal coating thickness detection device.

Metal coating thickness detectors include destructive film thickness gauges and non-destructive film thickness gauges, wherein the destructive film thickness gauge is measured by contacting the surface of the metal coating to obtain the thickness of the metal coating. However, this method will indirectly cause damage or pollution to the surface of the metal coating, so non-destructive film thickness gauges are mostly used for measurement now.

The most common non-destructive film thickness gauge is the eddy current film thickness gauge, which uses the principle of electromagnetic induction to sense the eddy current on the surface of the metal coating in a non-contact manner, and measures the thickness of the metal coating according to the phase change of the eddy current . However, the traditional eddy current film thickness gauge only measures a single surface corresponding to the object to be tested, and does not establish a two-dimensional movable stage to measure the thickness value of the metal coating on the object to be measured.

Therefore, the purpose of this disclosure is to provide a metal coating thickness detection device, which has a movable two-dimensional mobile stage, which can perform non-contact measurement of the metal coating thickness of the object to be measured through the transmission process, and then calculate the thickness of the metal coating to be measured. The thickness value of the metal coating on the object to be measured.

According to the above purpose of the present disclosure, a metal coating thickness detection device is proposed. The metal coating thickness detection device is suitable for detecting the coating thickness value on the surface of metal rods. The metal coating thickness detection device includes an eddy current sensor and a conveying device. The eddy current sensor has an annular hollow structure, wherein the eddy current sensor senses the eddy current value of the metal rod in the annular hollow structure, and the eddy current value corresponds to the coating thickness value of the metal rod. The conveying device is used to convey metal rods, so that the metal rods are conveyed through the annular hollow structure of the eddy current sensor, wherein the conveying device has a two-stage structure, and the two-stage structure includes the first conveying structure and the second conveying structure. segment conveying structure, and the current sensor is located between the first segment conveying structure and the second segment conveying structure.

According to an embodiment of the present disclosure, the above metal coating thickness detection device further includes a computer device electrically connected to the eddy current sensor to receive the eddy current value measured by the eddy current sensor, and according to the eddy current Value to calculate the coating thickness value of the metal bar.

According to an embodiment of the present disclosure, the above metal coating thickness detection device further includes a computer device electrically connected to the eddy current sensor to receive the eddy current value measured by the eddy current sensor, and according to the eddy current Values are used to calculate the coating thickness value and core thickness value of metal rods.

According to an embodiment of the present disclosure, the above-mentioned metal coating thickness detection device further includes a guiding jig disposed above the conveying device for guiding the metal rod to pass straight through the annular hollow structure of the eddy current sensor.

According to an embodiment of the present disclosure, the above metal coating thickness detection device further includes a supporting base for carrying the eddy current sensor, the conveying device and the guiding jig.

According to an embodiment of the present disclosure, the supporting base of the metal coating thickness detecting device is a non-metallic base made of Bakelite or Polypropylene (PP).

According to an embodiment of the present disclosure, the conveying device of the above metal coating thickness detection device further includes a conveying belt and a plurality of rollers, wherein the conveying device uses the rollers to roll the conveying belt.

According to an embodiment of the present disclosure, the conveyer belt in the above-mentioned metal coating thickness detection device is arranged on the surface of the conveying device, and the rollers are respectively arranged at the front end and the end of the conveying mechanism.

According to an embodiment of the present disclosure, the first section of the conveying structure of the above-mentioned metal coating thickness detection device includes an input end arranged at the front end of the eddy current sensor, and the second section of the conveying structure includes an input end arranged at the rear end of the eddy current sensor output.

According to an embodiment of the present disclosure, the above-mentioned metal coating thickness detection device, wherein the input end and the output end of the conveying device respectively further include a plurality of fixing frames, which are arranged on both sides of the input end and the output end relative to the conveying direction, for Fix the conveying device and adjust the distance between the conveying device and the eddy current sensor according to the length of the metal rod.

Please refer to FIG. 1 , which shows a schematic configuration diagram of a metal coating thickness detection device 100 according to an embodiment of the present disclosure. The metal coating thickness detection device 100 of the present embodiment can be used to measure the metal coating thickness on the surface of the target bar 700. The metal coating thickness on the surface of the target bar 700 can be, for example, zinc (Zn), copper (Cu), etc. Conductive metal coating.

The metal coating thickness detection device 100 mainly includes an eddy current sensor 210 , a conveying device 220 , a computer device 230 , a guiding jig 240 , a carrying base 250 and a fixing frame 260 . In the embodiment of the present disclosure, the eddy current sensor 210, the conveying device 220 and the fixing frame 260 are arranged above the carrying base 250, the guiding jig 240 is arranged above the conveying device 220, and the computer device 230 is electrically connected to the eddy current sensor 210 .

In the embodiment of the present disclosure, the material of the supporting base 250 is a non-metallic base, such as Bakelite or Polypropylene (PP).

In the embodiment of the present disclosure, the eddy current sensor 210 senses the target rod 700 in the ring-shaped hollow structure by changing the frequency, and at the resonant frequency of the eddy current sensor 210, the The obtained eddy current value is electrically transmitted to the computer device 230 . Next, the computer device 230 obtains corresponding S-parameters (scattering parameters) according to the received eddy current value, and calculates the thickness value of the metal coating film of the target bar 700 according to the S-parameters. Wherein, the S parameters respectively correspond to the thickness values of specific metal coatings in the first database.

In another embodiment of the present disclosure, the eddy current sensor 210 senses the target rod 700 in a ring-shaped hollow structure, and electrically transmits the obtained eddy current value to the computer device 230 . Next, the computer device 230 obtains the corresponding S parameter according to the received eddy current value, and calculates the coating thickness value and core thickness value of the target rod 700 according to the S parameter. Specifically, the S parameters are respectively corresponding to the thickness values of specific rods in the second database, and the coating thickness value and the core thickness value are further calculated according to the obtained S parameters.

In the embodiment of the present disclosure, in addition to calculating according to the eddy current value sensed by the eddy current sensor 210 , the computer device 230 can also be used to set the target rod 700 to be sensed. For example, the computer device 230 can be set to sense the target rod 700 once every 5 centimeters of the target rod 700, so as to obtain multiple sensed eddy current values during the transmission process, and store multiple The eddy current value sensed by the pen is electrically transmitted to the computer device 230 for calculation.

In the embodiment of the present disclosure, the conveying device 220 is used for conveying the target rod 700, so that the target rod 700 is conveyed through the annular hollow structure of the eddy current sensor. In addition, this conveying device has a two-stage structure, including a first stage conveying structure 221 and a second stage conveying structure 222, wherein the first stage conveying structure 221 includes an input end 223 arranged at the front end of the eddy current sensor, The second delivery structure 222 includes an output end 224 disposed at the rear end of the eddy current sensor.

The input end 223 is used for sending the target bar 700 into the first conveying structure 221 , and the output end 224 is used for outputting the target rod 700 conveyed by the second conveying structure 222 . Specifically, the target rod 700 is sent in from the input end 223, and is transported into the annular hollow structure of the eddy current sensor 210 through the first section of the conveying structure 221, and the eddy current sensor 210 senses the target rod 700 After the eddy current value is obtained, the target rod 700 is finally delivered to the output end 224 through the second conveying structure 222 to output the measured target rod 700 .

In the embodiment of the present disclosure, the delivery device 220 further includes a fixing frame 260 . The fixing frame 260 can fix both sides of the conveying device 220 to ensure the stability of the conveying device 220 during the conveying process. In addition, the fixing frame 260 can also adjust the distance between the conveying device 220 and the eddy current sensor 210 according to the length of the rod to be measured. For example, when the rod to be tested is short, the fixing frame 260 can be adjusted so that the first section of the conveying structure 221 or the second section of the conveying structure 222 is closer to the eddy current sensor 210, so as to completely carry the shorter rod. Conversely, when the rod to be measured is longer, the fixed frame 260 can be adjusted to make the first section of the conveying structure 221 or the second section of the conveying structure 222 farther away from the eddy current sensor 210 to completely carry the longer I want to measure rods.

In the embodiment of the present disclosure, the conveying device 220 further includes a conveying belt 270 and a roller 280 . The conveyor belt 270 is disposed on the conveying surface of the conveying device 220 , and the rollers 280 are respectively disposed at the front end and the end of the conveying device 220 . Specifically, during the conveying process, the target rod 700 is placed on the conveyor belt 270, and the conveyor belt 270 is driven by the roller 280, so that the target rod 700 can be driven and transported from the input end 223 along with the conveyor belt 270 to output 224.

In the embodiment of the present disclosure, the guiding jig 240 is disposed above the first section of the conveying structure 221 of the conveying device 220 , and is a pair of opposing guide piece structures. The guide jig 240 is used to guide the target rod 700 to enter the eddy current sensor 210 straightly without deviating from the track of the conveyor belt 270 of the conveyor device 220 . In the embodiment of the present disclosure, although FIG. 1 shows that there are three sets of guiding tools 240 at the first conveying structure 221, in fact, in some embodiments, more or less guiding tools can be used. Tool. And, although the guiding jig is not shown at the second delivery structure 222 in FIG. 1 , in some embodiments, it may be selected to add or not to add the guiding jig.

Although the present disclosure has been disclosed above in terms of implementation, it is not intended to limit the present disclosure. Any person with ordinary knowledge in this technical field may make various modifications and modifications without departing from the spirit and scope of the present disclosure. Therefore, the scope of protection of this disclosure should be defined by the scope of the appended patent application.

100:Metal coating thickness detection device 210: Eddy current sensor 220: Conveyor 221: The first conveying structure 222: The second conveying structure 223: input terminal 224: output terminal 230: computer device 240: Guidance fixture 250: carrying base 260: fixed frame 270: conveyor belt 280:Roller 700: target bar

In order to make the above and other purposes, features, advantages and embodiments of the present disclosure more comprehensible, the accompanying drawings are described as follows: [ FIG. 1 ] is a schematic diagram illustrating the configuration of a metal coating thickness detection device according to an embodiment of the present disclosure.

100:Metal coating thickness detection device

210: Eddy current sensor

220: Conveyor

221: The first conveying structure

222: The second conveying structure

223: input terminal

224: output terminal

230: computer device

240: Guidance fixture

250: carrying base

260: fixed frame

270: conveyor belt

280:Roller

700: target bar

Claims (10)

A metal coating thickness detection device is suitable for detecting a coating thickness value on the surface of a metal rod, the metal coating thickness detection device includes: An eddy current sensor has an annular hollow structure, wherein the eddy current sensor senses an eddy current value of the metal rod in the annular hollow structure, and the eddy current value corresponds to the metal rod Coating thickness value; and A conveying device, used to convey the metal rod, so that the metal rod is conveyed through the annular hollow structure of the eddy current sensor, wherein the conveying device has a two-stage structure, and the two-stage structure includes A first section of conveying structure and a second section of conveying structure, the eddy current sensor is located between the first section of conveying structure and the second section of conveying structure. The metal coating thickness detection device as described in claim 1 further includes a computer device electrically connected to the eddy current sensor to receive the eddy current value measured by the eddy current sensor, and according to the The eddy current value is used to calculate the coating thickness value of the metal rod. The metal coating thickness detection device as described in claim 1 further includes a computer device electrically connected to the eddy current sensor to receive the eddy current value measured by the eddy current sensor, and according to the The eddy current value is used to calculate the coating thickness value and a rod core thickness value of the metal rod. The metal coating thickness detection device as described in claim 1, further comprising a guiding jig, arranged above the conveying device, for guiding the metal rod to pass straight through the annular hollow of the eddy current sensor in structure. The metal coating thickness detection device according to claim 4 further includes a supporting base for carrying the eddy current sensor, the conveying device and the guiding jig. The metal coating thickness detection device as described in Claim 5, wherein the supporting base is a non-metallic base of Bakelite or Polypropylene (PP). The metal coating thickness detection device according to claim 1, wherein the conveying device further includes a conveying belt and a plurality of rollers, and the conveying device uses the rollers to roll the conveying belt. The metal coating thickness detection device as described in claim 7, wherein the conveyer belt is arranged on the surface of the conveying device, and the rollers are respectively arranged at the front end and the end of the conveying mechanism. The metal coating thickness detection device as claimed in item 1, wherein the first conveying structure includes an input end arranged at the front end of the eddy current sensor, and the second conveying structure includes an input end arranged at the eddy current sensor An output terminal at the rear end. The metal coating thickness detection device as described in claim 9, wherein the input end and the output end of the conveying device respectively further include a plurality of fixing frames, which are arranged on both sides of the input end and the output end relative to the conveying direction , used to fix the conveying device and adjust the distance between the conveying device and the eddy current sensor according to the length of the metal rod.

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