JP4374968B2 - Strip-like material inspection method and apparatus, and marking control method and apparatus - Google Patents

Description

  The present invention relates to a strip material inspection method, apparatus, and marking control method, apparatus, and more particularly to make the tracking unit of a spear inspection apparatus suitable for use in steel sheet marking in a steel process line unnecessarily small. The present invention relates to a strip-shaped material inspection method and apparatus, and a marking control method and apparatus capable of realizing highly accurate marking.

  Cold rolled steel sheets manufactured by cold rolling, or surface treated steel sheets that have been subjected to various surface treatments on the cold rolled steel sheets, surface defects, etc. over the entire length of the steel strip for quality assurance. An inspection for the presence or absence of a check is performed. For example, as a surface defect detection method for cold-rolled steel sheets, the surface of a steel sheet traveling in a line is scanned in the width direction with laser light, and the reflected light is converted into voltage intensity by a photoelectric conversion element such as a photomultiplier tube. A method for determining the presence or absence and level of wrinkles from a voltage signal has already been established.

  Usually, the inspection result of the bag is displayed on a monitor screen such as a CRT as information on the position, name, and grade of the bag, or printed out as a document.

  It is difficult to make all products defect-free. Therefore, based on the defect information displayed on the monitor screen in the line, remove the harmful defect part for the customer, or re-inspect in the next process based on the defect information and remove the harmful defect part for the customer. After shipping. Further, a document in which the defect information printed out together with the coil including the harmful defect portion is described is submitted to the customer, and the customer may have the harmful defect removed.

  In such cases, it is necessary for the customer to work by checking the data of the document containing the defect information against the actual product, which is not only cumbersome, but in some cases, processing while overlooking the defect There is a fear.

  For this reason, in Patent Document 1 or the like, it is possible to mark the heel portion of the steel plate detected by the heel detection device using the marking device so that the customer can easily identify the heel portion when re-inspecting the heel portion. It has been proposed to

  In addition, regarding the result of marking good / bad after marking, according to Patent Document 2, for example, a mark sensor for checking whether or not the marking device has surely marked the collar detected by the collar sensor. , Provided on the downstream side of the marking device, when the collar is tracked and marked, the mark sensor operates only while the collar moves to a position of D ± α with respect to the distance D between the collar sensor and the mark sensor. In addition, it has been proposed that if a wrinkle mark is detected, it is determined to be normal.

  In any case, the marking system that has been proposed so far is composed of a surface inspection device and a marking device, and when the surface inspection device detects harmful poisoning, it outputs a marking command signal at a predetermined position. In general, the marking point is tracked by this signal and the movement signal of the material to be inspected, and marking is actually performed at a predetermined timing.

  This series of operations will be described below.

  In general, a wrinkle inspection apparatus is a detection unit that optically or otherwise scans a surface to be inspected, a signal processing unit that processes a signal from the detection unit to determine wrinkles, and a detected wrinkle to an inspector. It consists of a data processing unit for notifying and editing the bag data.

  Here, the detection unit and the signal processing unit are processed in synchronization with the pulse signal. However, in order to make the detection resolution constant, the pulse signal is equal to or lower than the detection resolution and corresponds to a constant movement distance of the inspection object. Processing is performed in synchronism with the movement pulse signal. Therefore, although it depends on the size of the target ridge and the line speed, it is generally about 0.1 to several mm / pulse.

  The data processing unit tracks the position of the hook based on the moving distance of the steel strip, and outputs an alarm when the hook reaches a predetermined position such as a visual inspection table or displays the hook information on the monitor screen. In such an application, it is only necessary to manage the most important cocoon within a predetermined length in terms of operation management, and a large amount of information may be displayed when the cocoon information is displayed in detail. Since the inspector misses important wrinkle information, the wrinkle tracking is generally performed in units of several hundred mm to several m.

  Next, the operation of the marking device will be described.

  The data processing unit, depending on whether or not marking by steel strip set in advance by the host computer, marking target conditions such as marking target name, grade, position and length when marking, other marking conditions, Determine whether the detected wrinkle is a marking target. When it is determined that the marking object is a marking object, a marking command output is output to the marking device until the marking start position reaches a predetermined point until it moves by a distance corresponding to the marking length.

  The marking device tracks the marking start and end positions input from the data processing unit based on the movement pulse signal, and marks the steel strip when it reaches the marking point.

  In addition, after marking is performed, it is monitored whether marking is performed normally, and marking results such as marking normality and abnormality are determined.

  In the case of such a marking apparatus, depending on the required marking length and the accuracy of the marking position, it is an essential condition to perform marking at a position where wrinkles exist for the original purpose of marking. On the other hand, the length of the ridge generally varies greatly from about 1 mm to several meters or more.

JP 2001-188046 A Japanese Patent Publication No. 7-36003

  The conventional method as described above has the following problems in marking with high accuracy and high reliability.

  (1) When a marking command is output as a digital signal, the signal flow is as follows.

  a. Tracking processing software is activated by the inspection material movement signal, recognizes that the marking portion has reached a predetermined position, and executes digital signal output processing.

  b. The hardware processing software is activated via the operating system, the signal is transmitted to the digital signal output board via the system bus, and the digital signal is output.

  c. Following the reverse path to b above, the lower marking device recognizes the digital signal and writes the information into the memory.

  As a result of this process, there is a delay before the marking device writes the marking point information, resulting in misregistration of the marking, which cannot be ignored for lines with high line speeds. End up. For example, a line with a line speed of 600 mpm moves 10 m per second, so a delay of 10 milliseconds becomes a delay of 100 mm, for example.

  The delay time can be corrected to some extent by, for example, fixed time correction or time correction according to the line speed depending on the processing system, but a complicated processing device is required.

  (2) The surface inspection device performs flaw tracking processing for the purpose of displaying screens of detected wrinkles, alarms, lamp output, or filing of wrinkles. For such purposes, minute tracking is necessary. Therefore, tracking is usually performed in units of several hundred mm to several m. For this reason, for example, when the tracking unit is 1 m and the detection wrinkle is a dotted wrinkle, the signal output position and the wrinkle position may be shifted by a maximum of 1 m.

  (3) In order to solve the above problems, the tracking unit may be made as small as possible. However, the processing capacity of the computer is limited. For example, in the previous example, tracking is performed in units of 100 mm. If an attempt is made to interrupt processing once every 10 milliseconds, such processing is difficult for a personal computer, and in order to process this, it is necessary to use an expensive dedicated computer capable of high-speed response.

  On the other hand, according to an industrial programmable controller (sequencer), it is possible to stably process in a short time of 10 milliseconds or less, but with such a controller, complex image processing and eyelid inspection processing are possible. It is impossible to do.

  As described above, in a surface inspection apparatus that performs eyelid tracking in units of several hundred mm, it is difficult to perform marking on the collar with an accuracy of several tens of millimeters. Marking with a sufficient margin before and after is unavoidable, and the marking length to the non-protruding part becomes relatively long, leading to a decrease in yield when the marking part is discarded.

  Also, in the conventional marking system, even when monitoring the marking, if the marking is long and continuous, if multiple markings are made at short intervals, the multiple markings become even shorter and the markings are connected. If done, or in the case of these composite patterns, multiple responses will be returned for one marking, or fewer responses will be returned for multiple markings, There may be inconveniences in monitoring whether the marking was done normally.

  The present invention has been made to solve the above-mentioned conventional problems, and a first problem is to realize highly accurate marking without making the tracking unit of the eyelid inspection apparatus unnecessarily small.

  A second problem is to enable easy monitoring of whether or not marking has been performed normally.

The present invention provides a tracking pulse signal having a rate different from the moving pulse signal of the strip material in the strip material inspection method for detecting a harmful portion of the strip material moving in the longitudinal direction and tracking the strip material according to the movement of the strip material. It performs tracking of harmful portion data based on the origin detection signal generated by the passing of the origin position of the strip material, coarser of either resolution of the moving pulse signal and the tracking pulse signal of the band-shaped material The first problem is solved by generating them in synchronism with each other.

  Further, the tracking of the harmful part is performed based on the absolute distance information from the starting position of the strip material to the harmful part.

The present invention also provides a moving pulse signal corresponding to a certain moving distance of the belt-shaped material in the belt-shaped material inspection apparatus that detects a harmful portion of the belt-shaped material that is moving in the longitudinal direction and tracks it in accordance with the movement of the belt-shaped material. Signal processing means for detecting a harmful part in synchronization with the moving pulse signal, pulse generating means for generating a tracking pulse signal at a rate different from that of the moving pulse signal, and tracking of harmful part data in synchronization with the tracking pulse signal and data processing means for performing, recognizing the passage of the start position of the strip material, is generated in synchronism towards coarse either resolution of the origin detection signal moving pulse signal and the tracking pulse signal of the band-shaped material The first problem is solved by providing a starting point detecting means.

The present invention also provides a belt-shaped material movement pulse signal in a belt-shaped material marking control method for detecting a harmful portion of a belt-shaped material that is moving in the longitudinal direction and tracking and marking in accordance with the movement of the belt-shaped material. Tracked the harmful part data based on the tracking pulse signals at different rates, and generated in synchronization with either the moving pulse signal of the strip material or the tracking pulse signal, whichever has the lower resolution. Measure the absolute distance from the starting position of the strip material to at least one of the harmful part or the marking part based on the starting point detection signal, and the harmful part or marking part is a marking device according to the passing distance of the strip material from the starting position At the point of time, the first problem is solved by marking the band-like material.

Further, when the marking is longer than a predetermined length, a plurality of marking instructions for the marking are issued, and information indicating that a plurality of marking instructions for the marking are issued is added and transmitted.

In addition, when it is necessary to perform a plurality of the markings at a predetermined interval or less, the plurality of markings are handled as one marking and information indicating that the plurality of markings are handled as one marking is transmitted. It is a thing.

  Further, it is determined whether or not the marking has been normally performed, and includes ID information for specifying the marking portion in addition to distance information from a predetermined position of the belt-like material to at least one of the harmful portion or the marking portion. The second problem is solved by transmitting the marking information to the marking control device and transmitting the result of whether or not the marking is normally performed to the inspection device together with the ID information.

The present invention also detects the harmful portion of the belt-shaped member being moved in the longitudinal direction, in the marking device of the strip-like material for marking and tracking in accordance with the movement of the strip material, a moving pulse signal of the band-shaped material Tracking of harmful part data based on pulse signals for tracking at different rates, and starting point detection generated in synchronism with either the moving pulse signal of the strip or the tracking pulse signal, whichever has the lower resolution According to the inspection means for measuring the absolute distance from the starting position of the strip material based on the signal to at least one of the harmful part or the marking part, the command from the inspection means, and the passing distance from the starting position of the strip material And marking means for marking the belt-like material when it reaches the harmful part or the marking device. It is the issue that was resolved.

  Furthermore, it has marking determination means for determining whether or not the marking has been performed normally, and the inspection means adds to the distance information from a predetermined position of the strip material to at least one of the harmful part or the marking part, and the marking The marking information including the ID information for specifying the part is transmitted to the marking control device, and the result of whether or not the marking has been normally performed is transmitted to the inspection unit together with the ID information. It solves the problem.

  According to the present invention, highly accurate marking can be realized without making the tracking unit of the wrinkle inspection apparatus smaller than necessary.

  In addition, it is possible to easily monitor whether the marking has been performed normally.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  In FIG. 1, the example of arrangement | positioning of the main equipment of the processing line of the steel strip to which 1st Embodiment of this invention is applied is shown.

  In FIG. 1, a steel strip 12 rolled in advance to a predetermined thickness and width on a rolling line (not shown) and wound as a single coil 10 is inserted into a rewinder 20. The steel strip 12 that has been rewound from the rewinding machine 20 is subjected to various treatments such as heat treatment and plating, for example, in the processing equipment 24, and then the surface ridge is detected by the surface inspection device. Usually, the surface inspection device 28 inspects each surface by a front surface detector 28a and a back surface detector 28b.

  Thereafter, marking may be performed by the marking device 32 at a predetermined position of the steel strip automatically by a detection signal of the buttock from the surface inspection device 28 or by a manual instruction from an inspector.

  The inspection table 30 is a place where the inspector visually inspects the surface of the steel strip 12, or the line is stopped and the dimensions and the like are measured by various measuring devices. When the mark on the steel strip is confirmed by the inspector and the marking device 32 is installed downstream of the inspection table 30 as shown in FIG. In some cases, marking is also taken into consideration.

  A cutting machine 34 is provided on the exit side of the marking device 32 (or the inspection table 30), and the steel strip cut to a predetermined length by the cutting machine 34 is taken up by the winding machine 36. The steel strip wound up by the winder 36 in this way becomes a coil 14, and this coil 14 is bundled, packed and shipped, or is rewound in another process and subjected to various treatments and inspections. After being bundled, packed and shipped.

  In such a steel strip processing line, a steel strip that has been rolled to a predetermined thickness and width in advance by a rolling line and wound up as one coil 10 is inserted. If it passes, the tip and tail ends of the steel strip must be processed each time, and the efficiency becomes extremely low. Therefore, normally, the steel strip is continuously passed through the line by, for example, welding the steel strip using a welding machine 22 or the like on the entry side of the line. In such a case, it is necessary to detect the joint of the steel strip in terms of operation management or quality control. For this purpose, for example, during welding, a punch hole 13 is formed in the vicinity of the seam 12c of the steel strips 12a, 12b as shown in FIG. This makes it possible to recognize where the seam 12c has passed. Reference numeral 26 denotes a starting point detector for detecting a point to be the starting point of the steel strip 12, such as the joint 12c.

  FIG. 3 is a diagram showing the surface inspection device 28 and the marking device 32 in detail. Note that the same symbols are used for the same components as those in FIG. 1 and the description thereof is omitted.

  In the apparatus shown in FIG. 3, the detection of the buttocks by the surface inspection apparatus 28 is performed as follows.

  First, an inspection condition for instructing under what conditions such as a signal discrimination threshold for each steel strip is transmitted by the host computer 40, and these inspection conditions are transmitted to the signal processing unit 28d by the data processing unit 28c. Is preset. Next, when the starting point detection signal from the starting point detector 26 is input, the signal processing unit 28 d pulses a pulse (moving pulse) from a PLG (pulse oscillator) 44 installed on the transport roll 42 of the steel strip 12. The pulses (tracking pulses) after being converted to an appropriate rate by the frequency divider / distributor 46 are counted, and after moving a distance corresponding to the distance from the starting point detector 26 to the respective detectors 28a, 28b, the inspection conditions In addition, the distance measurement value of the steel strip is set to 0 and the inspection of the steel strip is started. Here, the data processing unit 28 c, the signal processing unit 28 d, and the monitor screen 28 e are a part of the apparatus constituting the surface inspection apparatus 28.

  The detectors 28a and 28b on the front and back sides detect the defect candidate defects on the front and back surfaces of the steel strip 12 in synchronization with the moving pulse signal from the pulse divider / distributor 46, and the detected signals are signal processing units 28d. Send to.

  In the signal processing unit 28d, based on the signal obtained from the feature amount of the defect candidate of the signal exceeding a certain threshold value, the defect name, the defect grade, the defect length, the distance from the steel strip starting point to the defect, etc. are calculated. Is output to the data processing unit 28c.

  The data processing unit 28c edits the defect information, discriminates the harmful defect from the defect name and defect grade, and further considers the defect position information on the front and back surfaces and the use of the steel strip if necessary. Discriminate harmful defects.

  The data processor 28c tracks the defect position based on the detection signal from the origin detector 26 and the tracking pulse from the pulse divider / distributor 46, and outputs a defect arrival alarm to the inspection table 30. Or display wrinkle information on the monitor screen 28e.

  Next, the operation of the marking device 32 will be described with reference to FIG.

  The data processing unit 28c includes marking target conditions such as the presence / absence of marking for each steel strip and the marking target defect name / defect grade set in advance by the host computer 40, the position and length for marking, and other marking conditions. Thus, it is determined whether or not the detected defect is a marking target. When it is determined that the marking object is a marking object, the marking start and end positions are calculated according to the marking conditions, and the absolute distance information from the steel strip starting position is transmitted and output to the marking control unit 32c.

  On the other hand, the marking control unit 32c is based on the absolute distance from the steel strip starting point as illustrated in FIG. 4 based on the detection signal from the starting point detector 26 and the tracking pulse from the pulse frequency divider / distributor 46. A tracking table is created, and when the marking start and end distances are transmitted from the data processing unit 28c, the marking information is written into this table.

  An example of the tracking table is shown in FIG. As shown in this figure, a tracking table from the steel strip starting point A to the starting point detector point D is provided so that the distance from the steel strip starting point to each tracking area is known.

  In the example of FIG. 4A, for example, the distance from the steel strip starting point A to the marking device point B is 50.2 m, and the distance from the surface inspection device point C is 51.2 m. It will be updated.

Here, in the example of FIG. 4A, when marking is to be performed at a position of 50.6 m to 51.0 m from the steel strip starting point A, the marking start distance = 50.6 (m) as a marking command
Marking end distance = 51.0 (m)
And so on.

  Next, the marking start and end positions are tracked by the tracking pulse from the pulse divider / distributor 46, and when the marking point is reached, a command is output to the front marker 32a and the back marker 32b. Mark on.

  In the case of FIG. 4A, marking command data is set as a “scheduled marking portion” in the corresponding tracking area as shown in FIG. 4B, and this portion reaches a predetermined point considering the response time of the marking device. At that time, marking is actually performed.

In addition to marking end distance, marking length = 0.5 (m)
For example, a method of transmitting marking length data such as.

  Here, the tracking table of the marking control unit 32c is accurate from the starting point detector 26 to a certain distance downstream of the marking device, and it is not necessary to have a table corresponding to the entire length of the steel strip. That is, the absolute distance from the steel strip starting point A to the marking device point B (“50.2” m in the example of FIG. 4B) is stored, and this is sequentially updated as the steel strip progresses. If this is the case, it is not necessary to have a tracking table from the steel strip starting point A to the marking device point B, and if this method is used, less memory can be used.

  The marking result is monitored by the front and back detectors 48a and 48b of the marking detection device 48, and the quality of the marking is determined by the marking determination unit 48c.

  Further, by operating the operation panel 34b of the cutting machine 34, the cutter 34a is driven via the cutting machine control device 34c, and the steel strip 12 is cut at a necessary position.

  Here, the reason why the pulse divider / distributor 46 is used in the present apparatus will be described below.

  In general, the signal processing unit 28d performs signal processing in synchronization with a pulse signal, and this pitch corresponds to the resolution of wrinkle detection. This pitch is usually about 0.1 to several mm, although it depends on the target wrinkles.

  On the other hand, in the data processing unit 28c, an alarm is sounded when the detected brim approaches the inspection table 30, or a typical brim in the range of several m in the steel strip flow direction is displayed on the monitor screen 28e. Or when the coil 14 is cut by the cutting machine 34, the number of hooks and the occurrence rate are calculated, the distribution of the hooks is displayed on the monitor screen 28e, or printed on a form. In order to perform such processing, it is necessary to track the eyelid data in units of several hundred mm to several m. In order to make the tracking unit smaller than the above numerical value, a special processing device or a special device such as an industrial minicomputer can be used as long as it can be processed by a relatively inexpensive computer such as an industrial personal computer. If it is not installed, it will be impossible to process.

  In the marking control device 32c, depending on the required accuracy of marking, tracking is performed with a pitch of several mm to several tens of mm. Although this depends on the line speed, it is sufficient to perform the processing once every several milliseconds to several tens of milliseconds, and the processing can be sufficiently performed by an inexpensive general-purpose programmable controller.

  As described above, the required pulse pitch differs depending on each device. Making this the same means matching the shortest pulse pitch, which causes various restrictions on the device configuration and causes a cost increase.

  In order to solve such a problem, the present invention converts the pulse to an optimum pulse rate for each device and supplies a pulse of a stable signal level to each device. Is used.

  Note that the necessary number of PLGs 44 may be installed without using the pulse divider / distributor 46. However, since this generally increases the cost, this is not often adopted.

  Next, a method for further improving the marking position accuracy will be described with reference to FIG.

  In FIG. 5, for example, “pulse 1” is a tracking pulse signal in units of several mm used in the signal processing unit 28d, “pulse 2” is a moving pulse signal in units of several hundred mm used in the data processing unit 28c, and “starting point signal”. Is a steel strip starting point detection signal from the starting point detector 26, the starting point signal is generated asynchronously with the pulse 1 and pulse 2 signals. Therefore, for example, when the resolutions of pulse 1 and pulse 2 are as shown in FIG. 5 and each device detects the rising edge of the pulse, and the origin signal is generated within the range of T, the device and pulse that use pulse 1 However, in the other cases, an error occurs in the distance counted by each device. For example, when the resolution of pulse 1 is 1 mm / pulse and the resolution of pulse 2 is 100 mm / pulse, a position error of the worst 99 mm may occur.

  In order to avoid the occurrence of such a problem, the starting point signal is generated in synchronism with the coarser resolution (pulse 2 in the case of FIG. 5), thereby preventing the position shift due to the difference in pulse resolution.

  Also, the marking command output from the marking control unit 32c to the markers 32a and 32b can be processed at a fixed time period if both the marking control unit 32c and the control units of the markers 32a and 32b are used with a general-purpose programmable controller. Since the high-speed processing is possible and the tracking unit of the marking control unit 32c is small, the amount of delay is small. Therefore, in this case, even if a general digital signal output is used, there is no significant deviation in marking accuracy.

  Further, if the processing capability and program memory capacity of the general-purpose programmable controller to be used are sufficient, if the functions of the marking control unit 32c and the markers 32a and 32b are performed by the same processing device, the deviation can be eliminated and a cheaper device can be obtained. It is also possible.

  Next, a second embodiment of the present invention will be described.

  FIG. 6 is an explanatory diagram of a surface inspection apparatus and a marking apparatus according to the second embodiment. Note that the same symbols are used for the same components as those in FIGS. 1 and 3, and the description thereof is omitted.

  In 2nd Embodiment shown in FIG. 6, the detection of the collar part and the marking to the steel strip 12 by the surface inspection apparatus 28 are completely the same as the case of 1st Embodiment.

  Here, in the second embodiment, when it is determined to be a marking target bag, the data processing unit 28c sets an ID unique to the marking in addition to the marking command output as shown in FIG. Here, the ID may be unique as long as it is a series of markings, and may be, for example, a serial number for each steel strip.

  On the other hand, after marking, the marking device 32 inputs a marking normal / abnormal signal from the marking determination unit 48c of the marking detection device 48, and sends the determination result to the data processing unit 28c together with a preset ID number. Output.

  The data processing unit 28c collates the ID to determine whether the output marking has been performed normally. Thereby, it is possible to easily collate with marking result data without strictly tracking the marking command output.

  Also, if the marking end position has not yet been determined when the marking start position arrives at the marking command output point, for example, it is necessary to perform very long markings with such a marking device. A marking command is output with the end position determined at the time as one marking. Next, the end position of the previous marking is set as the start position, and from there to the next end position is output as a marking command. At this time, the ID of this marking command is the same as the previous marking, and as shown in FIG. 8, by adding a marking connection sign, the marking device 32 treats these as one marking, and the marking determination result is also Return as one ID.

That is, as shown in FIG. 9A, when one marking command corresponds to one bag, in addition to the marking distance information, for example, mark ID = 1
Connected sign = OFF
Transmit data like For such a setting, since the marking device performs only one marking, the mark ID is returned in addition to the marking result information. In this way, it is possible to easily determine which marking is a response to.

  Moreover, since there are a plurality of wrinkles as shown in FIG. 9B and the interval between markings is short, as a result, when marking is performed continuously, this is treated as one marking, as in FIG. The mark ID is also the same. By doing so, complicated processing such as dividing one continuous mark into a plurality of marks is eliminated, and management becomes easy.

Further, as shown in FIG. 9C, when the heel is very long and the tail end of the marking is not fixed when the marking command is output, first, for example, the marking start distance = 50. 6 (m)
Marking end distance = 51.8 (m)
Mark ID = 3
Connected sign = ON
The marking command is output.

Next, when outputting a marking command for 疵 d-2, for example, marking start distance = 51.9 (m)
Marking end distance = 52.2 (m)
Mark ID = 3
Connected sign = OFF
The marking command is output.

  In response to such a command, the marking device performs marking as one marking of mark ID = 3 between 50.6 (m) and 52.2 (m), and returns a response.

  By doing so, complicated processing such as dividing one continuous mark into a plurality of marks is eliminated, and management becomes easy.

  In the above embodiments, the present invention is applied to steel strips in all cases, but the scope of application of the present invention is not limited to this, and can be similarly applied to strips including metal strips and non-metal strips in general. Is clear.

The figure which shows the principal part of the processing equipment of the steel strip to which embodiment of this invention is applied Plan view showing the connecting part of steel strip The figure which shows the surface inspection apparatus and marking apparatus in 1st Embodiment of this invention in detail The figure which shows the example of the tracking table used in 1st Embodiment. A time chart showing an example of the relationship between a pulse and a starting signal that also have different resolutions The figure which shows the surface inspection apparatus and marking apparatus in 2nd Embodiment of this invention. Figure showing operation Diagram showing the operation during connection marking The figure which similarly shows the example of connection marking

Explanation of symbols

DESCRIPTION OF SYMBOLS 10, 14 ... Coil 12 ... Steel strip 13 ... Punch hole 24 ... Processing equipment 26 ... Starting point detector 28 ... Surface inspection device 28a ... Surface detector 28b ... Back surface detector 28c ... Data processing part 28d ... Signal processing part 32 ... Marking Device 32a ... Front marker 32b ... Back marker 32c ... Marking control unit 34 ... Cutting machine 42 ... Conveying roll 44 ... Pulse oscillator (PLG)
46 ... Pulse divider / distributor 48 ... Marking detector

Claims (9)

In the inspection method of the strip-shaped material that detects the harmful part of the strip-shaped material moving in the longitudinal direction and tracks it according to the movement of the strip-shaped material,
Performs tracking of harmful portion data on the basis of the pulse signal for tracking a different rate than the moving pulse signal of the band-shaped member, a starting point detection signal generated by the passing of the origin position of the strip material, the movement pulse signal of the band-shaped material A method for inspecting a strip-shaped material, wherein either one of the tracking pulse signal and the tracking pulse signal is generated in synchronization with the coarser one .   2. The strip-shaped material inspection method according to claim 1, wherein tracking of the harmful portion is performed based on absolute distance information from a starting position of the strip-shaped material to the harmful portion. In the strip inspection device that detects the harmful part of the strip moving in the longitudinal direction and tracks it according to the movement of the strip,
A signal processing means for detecting a harmful part in synchronization with a movement pulse signal corresponding to a fixed movement distance of the belt-shaped material;
Pulse generating means for generating a tracking pulse signal at a rate different from that of the moving pulse signal;
Data processing means for tracking harmful part data in synchronization with the tracking pulse signal;
Recognizing the passage of the start position of the strip material, and a starting point detecting means for generating in synchronism origin detection signal to the coarser of either resolution of the moving pulse signal and the tracking pulse signal of the band-shaped material A strip-shaped material inspection apparatus characterized by that. In the belt-shaped material marking control method for detecting the harmful part of the belt-shaped material moving in the longitudinal direction and tracking and marking according to the movement of the belt-shaped material,
The harmful part data is tracked based on a tracking pulse signal having a rate different from that of the moving pulse signal of the belt-like material, and the moving pulse signal of the belt-like material or the tracking pulse signal, whichever has a coarser resolution. Measure the absolute distance from the starting position of the strip material to at least one of the harmful part or marking part based on the starting point detection signal generated in synchronization with
A marking control method for a strip-shaped material, wherein the strip-shaped material is marked when a harmful portion or a marking portion reaches a marking device according to a passing distance from the starting position of the strip-shaped material. 5. When the marking is longer than a predetermined length, a plurality of marking commands for the marking are issued, and information indicating that a plurality of marking commands for the marking are issued is added and transmitted. Marking control method. When it is necessary to perform a plurality of the markings at a predetermined interval or less, the plurality of markings are treated as one marking, and information indicating that the plurality of markings are treated as one marking is transmitted. The marking control method according to claim 4 or 5. Determine whether the marking has been made successfully;
In addition to distance information from a predetermined position of the belt-like material to at least one of the harmful part or the marking part, marking information including ID information for specifying the marking part is transmitted to a marking control device, and the marking is The marking control method according to any one of claims 4 to 6, wherein a result indicating whether or not the operation has been normally performed is transmitted to the inspection apparatus together with the ID information. In the strip marking device for detecting the harmful part of the strip moving in the longitudinal direction, tracking and marking according to the movement of the strip,
The harmful part data is tracked based on a tracking pulse signal having a rate different from that of the moving pulse signal of the belt-like material, and the moving pulse signal of the belt-like material or the tracking pulse signal is one of the coarser resolution. Inspection means for measuring the absolute distance from the starting position of the strip-shaped material based on the starting detection signal generated in synchronization to at least one of the harmful part or the marking part,
Marking means for marking the strip material when it reaches the harmful part or the marking device according to the command from the inspection means and the passing distance from the starting position of the strip material,
A strip-shaped material marking device comprising: Marking determination means for determining whether or not the marking has been normally performed;
The inspection means transmits marking information including ID information for identifying the marking portion to a marking control device in addition to distance information from a predetermined position of the belt-like material to at least one of the harmful portion or the marking portion. 9. The marking apparatus according to claim 8, wherein a result of whether or not the marking is normally performed is transmitted to the inspection unit together with the ID information.

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