JP2006226714A - Coil end detecting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accurately detect the end of plate shape body when the plate shape body is cut off with a coil even in the case with different plate thickness, plate width, material, manufacturer, coil outer diameter, etc. of the plate shape body consisting the coil. <P>SOLUTION: While pivoting a coil 22 wound with a plate-like long length material with a predetermined width and a predetermined thickness, the device is constituted of a coil support means 12 for supporting a coil wound around the long scale plate shape body having a specific width and a specific length and provided with a drive means rotating the coil, a pair of rollers 30 and 32 provided in contact with the coil with an interval around the coil, a coil end detection mechanism 16 of which the tip end a position sensor 40 for detecting floating of the end of the plate shape body on the surface of the coil between the pair of rollers, and a direct moving means 14 for moving the coil tip end detection mechanism almost in parallel to the diameter direction of the coil near the measuring location. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a coil tip detection device, and more particularly to a coil tip detection device suitable for processing a coil wound with a plate-like body such as aluminum.

  Conventionally, various proposals have been made regarding a technique for processing a coil in which a plate-like body (strip-shaped object) such as aluminum is wound. Of these, the plate-like body wound around the coil is not completely fed out, and the plate-like body is separated from the coil at the end of use, and the coil having a predetermined outer diameter is often stored. In such a case, if the coil from which the plate-shaped body is cut is left as it is, the winding of the plate-shaped body is naturally released due to the rigidity of the plate-shaped body, which hinders management such as storage of the coil.

  Therefore, in the coil from which the plate-like body has been cut off, for example, a coping method (terminal treatment method) in which the tip portion of the plate-like body is cut and fixed to the coil with an adhesive tape or the like is generally employed. is there.

  However, in the case of a coil mounted on various manufacturing apparatuses, if the end treatment is not performed at the same time as the plate is cut off, the winding of the plate will be released due to the rigidity of the plate, etc. There was a problem that the manufacturing procedure was complicated.

A proposal of an apparatus for detecting an end portion of a plate-like body wound around a coil so as to cope with such a problem is known (see Patent Document 1). This proposal is based on the principle of providing a projection optical fiber and a light receiving optical fiber close to the surface of the coil, and detecting the change in the amount of reflected light to detect the end of the plate. It is a detection device.
Japanese Utility Model Publication No. 56-27609

  However, the conventional coil tip detection device such as Patent Document 1 does not hinder the detection of the end of a plate-like body having a relatively large thickness, but the detection accuracy is limited in the case of a thin plate. Further, when the plate thickness, plate width, material, manufacturer, coil outer diameter, etc. of the plate-like body are different, there is a problem that it is very difficult to cope with each of them.

  That is, in the method of detecting the change in the amount of reflected light, the reflectivity of the plate-like body surface or the plate-like shape when the plate thickness, plate width, material, manufacturer, coil outer diameter, etc. are different. The curl wrinkles due to body rigidity are different and are prone to false detection. In particular, in the case of a thin plate having a thickness of about 0.1 mm, the tendency is still strong and application is difficult.

  The present invention has been made in view of such circumstances, and even if the plate thickness, plate width, material, manufacturer, coil outer diameter, etc. of the plate-like body constituting the coil are different, the plate-like body is more plate-like than the coil. It is an object of the present invention to provide a coil tip detection device that can accurately detect the tip of a plate-like body when the body is cut off, and is suitable for performing a terminal treatment at the same time as the plate-like body is cut off.

  In order to achieve the above object, the present invention includes a first drive unit that pivotally supports a coil around which a long plate-like body having a predetermined width and a predetermined thickness is wound, and rotates the coil. A coil support means, a pair of rollers provided in contact with the coil and spaced apart in the circumferential direction of the coil, and an end of the plate-like body on the surface of the coil between the pair of rollers A coil tip detection mechanism having a position sensor for detecting lifting at its tip, and a second driving means for moving the coil tip detection mechanism in the radial direction in accordance with an increase or decrease in the coil diameter. Provided is a coil tip detection device.

  According to the present invention, the lift of the end of the plate-like body on the surface of the coil can be accurately detected by the pair of rollers and the position sensor spaced apart in the circumferential direction of the coil, and the plate-like body has been separated. It is very effective for end treatment at the same time.

  That is, in a state before the plate-like body is separated from the coil, the pair of rollers spaced apart in the circumferential direction of the coil rotates while following the rotation of the coil while being pressed against the outer periphery of the coil. Even when the plate-like body is separated from the coil, the pair of rollers rotate while pressing the coil, but the end of the plate-like body passes through one of the pair of rollers and both When it comes to the middle, the end of the plate-like body jumps up. This jumping up state can be detected by the position sensor, and can be recognized as the end of the plate-like body.

  In the present invention, in the coil tip detection mechanism, it is preferable that two or more pairs of the pair of rollers are provided to be spaced apart in the width direction of the coil. Providing such a pair of two or more pairs of rollers is particularly effective for a coil of a plate-like body having a large plate width.

  In the present invention, it is preferable that the axis of the second driving means forms an angle of 0 to 60 degrees with respect to the vertical axis. With such a configuration, the central axis of the coil tip detection mechanism can be set in the clockwise direction from 0 o'clock to 2 o'clock or from 10 o'clock to 12 o'clock on the outer periphery of the coil. The inventor has found that the jumping state of the end of the plate-like body is particularly remarkable on the outer periphery of the coil at this position. Therefore, detection by the position sensor can be performed more reliably.

  In addition, it is more preferable that the axis | shaft of a 2nd drive means has made | formed the angle of 15 to 45 degree | times with respect to the vertical axis from the point of the bounce-up state of a plate-shaped body edge part. The above principle will be described later.

  Further, in the present invention, the coil tip detection mechanism is in close contact with the coil by a tape supply means for supplying an adhesive tape, and a raised portion of the end of the plate-like body on the surface of the coil by the supplied adhesive tape. It is preferable to include a tape attaching means to be fixed and a control means for driving the tape supply means and the tape attaching means by a signal from the position sensor.

  In this way, if the structure in which the raised portion of the end portion of the plate-like body is tightly fixed to the coil by the adhesive tape is provided, it is very effective in the end treatment of the coil.

  In the present invention, the position sensor is preferably a laser type displacement sensor. As the displacement sensor, a known displacement sensor such as a photoelectric sensor or a proximity sensor can be used, but such a laser displacement sensor is desirable in terms of detection accuracy.

  In the present invention, it is preferable that two position sensors are provided, and each of the position sensors is provided in the vicinity of the pair of rollers. Even if only one position sensor is used, the effect of the present invention can be obtained. However, if two position sensors are provided in the vicinity of each roller in this way, the rotation direction of the roller is any (clockwise, Even counterclockwise) can be dealt with, which is more preferable.

  As described above, according to the present invention, the lift of the end of the plate-like body on the surface of the coil can be accurately detected by the pair of rollers and the position sensor spaced in the circumferential direction of the coil. It is very effective for end treatment at the same time as the body is cut off.

  Hereinafter, preferred embodiments of a coil tip detection device according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a front view showing a coil tip detection device 10 according to the present invention. As shown in FIG. 1, the coil tip detection device 10 includes a coil support unit 12, a linear motion unit 14 that is a second drive unit, and a coil tip detection mechanism 16.

  The coil support means 12 includes first drive means (not shown) that pivotally supports a coil 22 around which a long plate-like body W having a predetermined width and a predetermined thickness is wound, and rotates the coil 22. . As the first drive means, a motor that can be generally used, can be switched between forward and reverse rotations, and has a configuration capable of changing the rotation speed steplessly. This first driving means is controlled by a control means (not shown).

  The linear motion means 14 is a drive means for moving the coil tip detection mechanism 16 substantially parallel to the radial direction of the coil 22 in the vicinity of the measurement location, and is a linear motion guide 24 fixed to an apparatus body (housing) (not shown). And an air cylinder 26 fixed to the apparatus main body, a horizontal arm 28 fixed to the moving stage 24A of the linear motion guide 24, and the like.

  The linear motion guide 24 is called a linear slide or the like, and for example, a product (product name: LM guide) manufactured by THK can be used. A tip of a cylinder rod 26 </ b> A of the air cylinder 26 is fixed to a substantially middle portion of the horizontal arm 28. Thereby, the horizontal arm 28 can be moved up and down by driving the air cylinder 26.

  The coil tip detection mechanism 16 is provided so as to be in contact with the coil 22, and a pair of rollers 30 and 32 (also a pair of 34 and 36 not shown) spaced apart in the circumferential direction of the coil 22 and the rollers 30 and 32. It is a mechanism that is focused on the plate-like body W on the surface of the coil 22 between them, and has a laser displacement meter 40, 42 that is a position sensor that can detect lifting of the end of the plate-like body W at its tip. is there.

  The coil tip detection mechanism 16 also includes tape supply means and tape sticking means described later.

  The rollers 30 and 32 (also a pair of 34 and 36) and the laser displacement meters 40 and 42 are provided at the distal end portion of the U-shaped bracket 46. FIG. 2 is a perspective view showing a configuration of the U-shaped bracket 46. In the drawing, the laser displacement meters 40 and 42 are not shown.

  The U-shaped bracket 46 is a substantially laterally U-shaped member in a side view, and includes a horizontal portion 46A and substantially trapezoidal vertical portions 46B and 46C that are respectively provided below both ends of the horizontal portion 46A. The rollers 30 and 32 described above are rotatably supported at the lower end of the vertical portion 46B, and the rollers 34 and 36 are similarly rotatably supported at the lower end of the vertical portion 46C.

  The rollers 30, 32, 34 and 36 are of the same shape and material. These rollers 30, 32, 34 and 36 press the surface of the coil 22 and suppress the floating of the plate-like body W. As the material of the rollers 30, 32, 34, and 36, although depending on the material of the plate-like body W, various rubber members can be preferably employed from the viewpoint of preventing defects such as scratches on the surface of the plate-like body W.

  As shown in FIG. 1, the laser displacement meters 40 and 42 are fixed in the vicinity of the lower end portion of the vertical portion 46B via mounting brackets 40A and 42A, respectively. The measurement parts (focal points) of the laser displacement meters 40 and 42 are both adjusted so as to match the plate-like body W on the surface of the coil 22 substantially between the rollers 30 and 32.

  The laser displacement meters 40 and 42 are displacement meters that irradiate a laser beam from the light projecting unit, take in the laser beam reflected from the measurement site by the light receiving unit, and calculate a relative distance from the measurement site. Can be used.

  The interval between the vertical portions 46B and 46C of the U-shaped bracket 46, the interval between the rollers 30 and 32 (34 and 36), the outer diameter of the rollers 30, 32, 34 and 36, the roller width, etc. An appropriate value can be adopted depending on the outer diameter, the width of the coil 22 (plate width of the plate-like body W), the thickness of the plate-like body W, the material, and the like.

  Further, when the width of the coil 22 (the plate width of the plate-like body W) is very large, a configuration in which two or more U-shaped brackets 46 are arranged, and a configuration in which three or more vertical portions of the U-shaped brackets 46 are provided (for example, side surfaces) It is possible to adopt a substantially m-shaped shape).

  In FIG. 1, an air cylinder 48 is fixed to the tip of the horizontal arm 28 of the linear motion means 14 described above, and the tip of the cylinder rod 48A of the air cylinder 48 is the center of the horizontal portion 46A of the U-shaped bracket 46. It is fixed to. As a result, the U-shaped bracket 46 can be moved up and down by driving the air cylinder 48. Thereby, the pressing force by the rollers 30, 32, 34 and 36 can be applied to the surface of the coil 22.

  Even when the air cylinder 48 is not driven, the weight of the U-shaped bracket 46 (the weights of the rollers 30, 32, 34, 36, etc.) can be reduced by lowering the horizontal arm 28 by the linear motion means 14 described above. Can be applied to the surface of the coil 22.

  Next, the tape supply means and tape sticking means included in the coil tip detection mechanism 16 will be described. The tape supply means is means for supplying the adhesive tape 50 to the vicinity of the surface of the coil 22, and the tape adhering means is the adhesive tape 50 supplied with the raised portion of the end of the plate-like body W on the surface of the coil 22. Is a sticking means for tightly fixing to the coil 22, and both means are driven by a control means (not shown) by a signal from the laser displacement meter 40 or 42. Hereinafter, both means will be described collectively.

  In FIG. 1, a tape supply stage 60 provided with both means is fixed to a lower end portion of a vertical arm 62 fixed to a moving stage of linear motion means (not shown) fixed to the back surface of the horizontal arm 28. It is possible to move horizontally in the left-right direction by the driving means that does not.

  The tape supply stage 60 has a tape roll 64 around which the adhesive tape 50 (including the release sheet 50A attached to the adhesive surface) is wound, a plurality of guide rollers 66, 66... Are provided with a plurality of guide rollers 68, 68,... For guiding the release sheet 50A, a winding core 70 for winding the release sheet 50A, a cutter cylinder 72 having a cutter at the tip, and a press cylinder 74 having a press surface at the tip. It has been.

  With this configuration, the raised portion of the end of the plate-like body W on the surface of the coil 22 can be tightly fixed to the coil 22 with the adhesive tape 50. Therefore, it functions effectively in the 22 terminal treatment of the coil.

  In FIG. 1, the tape supply stage 60 is provided at a position (a position perpendicular to the paper surface) that does not interfere with the U-shaped bracket 46 of the coil tip detection mechanism 16, and the laser displacement meter 40 or 42 is plate-shaped. Immediately after detecting the raised portion of the end of the body W, the raised portion can be tightly fixed to the coil 22 by the adhesive tape 50.

  Next, the positional relationship between the coil support means 12 and the coil tip detection mechanism 16 (including the linear motion means 14) will be described with reference to FIG.

  The axis CL of the coil tip detection mechanism 16 is arranged so as to form an angle α with respect to the vertical axis VL, and this axis CL is arranged so as to pass through the center 22C of the coil 22. As described above, the angle α is preferably 0 to 60 degrees, and more preferably 15 to 45 degrees, at the outer periphery of the coil 22 where the jumping state of the end of the plate-like body W is particularly remarkable. preferable.

  In FIG. 3, when the plate-like body W is unwound, the rotation direction of the coil 22 is counterclockwise (L) as indicated by a parenthesis arrow. Since the rotation is right (R) as indicated by the arrow, the angle α is rightward with respect to the vertical axis VL. Thus, in the case of left rotation (L), the angle α is preferably leftward with respect to the vertical axis VL. Details of the effect of the angle α will be described later with reference to FIG.

  In FIG. 3, the coil tip detection mechanism 16 in which the tip part (rollers 30 and 32) is in contact with the outer peripheral position of the coil 22 with the radius r <b> 1 indicated by the solid line, the plate-like body W is fed out and the outer diameter of the coil 22. As it decreases, it moves downward.

  Even in this case, as described above, since the axis CL of the coil tip detection mechanism 16 is arranged so as to pass through the center 22C of the coil 22, the axis CL of the coil tip detection mechanism 16 is the vertical axis VL. Is maintained, and, as indicated by the imaginary line in the figure, the contact position of the coil tip detection mechanism 16 with the radius r2 on the coil 22 is also maintained in an appropriate state. .

  Next, the operation of the coil tip detection device 10 configured as described above will be described with reference to FIG. In FIG. 4, it progresses with time in the order of (A) to (C).

  First, when the plate-like body W is paid out, the rotation direction of the coil 22 is counterclockwise (L) as indicated by the parenthesis in FIG. 3, and the plate-like body W drawn out from the coil 22 is processed. At this time, the rotation of the coil 22 by the coil support means 12 is relatively fast. For example, the rotation of the coil 22 is controlled so that the feeding speed of the plate-like body W is about 100 m / min.

  Next, when the processing of the plate-like body W is finished, the rotation of the coil 22 is stopped, and the processing end portion of the plate-like body W is separated from the coil 22 by a cutter (not shown). Then, the coil 22 is reversely rotated by the coil support means 12 (in the direction of arrow R in FIG. 4). At this time, the rotation of the coil 22 by the coil support means 12 is relatively low. For example, the rotation of the coil 22 is controlled so that the peripheral speed of the plate-like body W is about 2 m / min.

  Then, the coil 22 is reversely rotated, and the end E of the plate-like body W approaches the roller 30 of the coil tip detection mechanism 16 from the left as shown in FIG. In this state, the plate-like body W is pressed by the roller 30, but since the end E of the plate-like body W is separated from the pressing point by the roller 30, the plate-like body W is slightly lifted from the surface of the coil 22.

  Next, as shown in FIG. 4B, the end E of the plate-like body W comes directly below the roller 30 of the coil tip detection mechanism 16. In this state, since the end E of the plate-like body W is pressed by the roller 30, there is no lifting.

  Next, as shown in FIG. 4C, the end E of the plate-like body W comes off the roller 30 of the coil tip detection mechanism 16 and comes to the right side. This state is the moment when the end E of the plate-like body W is released from the pressing by the roller 30, and is lifted. Therefore, this lift is reliably measured by the laser displacement meter 40.

  The following two reasons are presumed as the mechanism that causes the end E of the plate-like body W to rise at the moment when the pressing by the roller 30 is released.

  1) Although depending on the material or the like of the plate-like body W, the end E of the cut plate-like body W generally causes a slight curling (warp deformation). It is restored at the moment when it is released from the state suppressed by (so-called springback phenomenon).

  2) In the state shown in FIG. 4C, the plate-like body W is in a cantilever state constrained at a position pressed by the roller 32. Centrifugal force by reverse rotation is applied. Accordingly, the coil 22 is deformed in the direction of rising from the surface of the coil 22.

  Unlike FIG. 4, when the angle α is in the left direction with respect to the vertical axis VL, the degree of gravity against the centrifugal force increases, so that the lift amount is greater than that in FIG. Is considered to be slightly smaller.

  Next, the operation after the lift is measured by the laser displacement meter 40 will be described.

  When the lift of the end E of the plate-like body W is measured by the laser displacement meter 40, the tape supply stage 60 provided with the tape supply means and the tape attaching means in FIG. Move horizontally to the left.

  Next, the tape roll 64, guide rollers 66, 66... Are driven by an instruction from the control means, and the adhesive tape 50 is supplied near the surface of the coil 22. At this time, the release sheet 50A attached to the adhesive surface of the adhesive tape 50 is wound around the core 70 through the guide rollers 68, 68.

  When the supplied adhesive tape 50 is connected to the end E of the plate-like body W and the surface of the coil 22 on the left side thereof, the press cylinder 74 is driven by the instruction of the control means, and the tip The pressure-sensitive adhesive tape 50 is pressed and adhered to the end E of the plate-like body W and the surface of the coil 22 with the pressing surface. At substantially the same time, the cutter cylinder 72 is driven by an instruction from the control means, and the adhesive tape 50 is separated by the cutter at the tip.

  With the above operation, the floating portion of the plate-like body W end E on the surface of the coil 22 can be tightly fixed to the coil 22 with the adhesive tape 50. Therefore, the 22 terminal treatment of the coil can be performed effectively.

  When the adhesive tape 50 is bonded, the rotation of the coil 22 may be temporarily stopped, the tape supply stage 60 may be horizontally moved in the right direction in synchronization with the movement of the plate-like body W, When the moving speed of the plate-like body W is slow, the rotation of the coil 22 may not be stopped.

  As described above, according to the coil tip detection device 10 of the present embodiment, the pair of rollers 30 and 32 and the laser displacement meters 40 and 42 that are spaced apart in the circumferential direction of the coil 22 form a plate shape on the surface of the coil 22. The lifting of the end E of the body W can be detected with high accuracy, and it is very effective for performing the end treatment at the same time as the plate-like body W is cut off.

  As mentioned above, although embodiment of the coil front-end | tip detection apparatus based on this invention was described, this invention is not limited to the said embodiment, Various aspects can be taken.

  For example, in this embodiment, although the structure provided with a tape supply means and a tape sticking means is employ | adopted for the coil front-end | tip detection mechanism 16, a tape sticking means etc. can also be provided separately.

  Moreover, you may perform the terminal process at the time of the plate-shaped body W being cut | disconnected not with the adhesive tape 50 but with another restraining means, for example, resin-made band members.

  Furthermore, although the laser displacement meters 40 and 42 are employed as the position sensor, other types of position sensors can be selected.

  A detection test of the end E of the plate-like body W on the surface of the coil 22 was performed using the coil tip detection device 10 shown in FIG. However, in this case, the end treatment with the adhesive tape 50 using the tape supply means and the tape attaching means was not performed.

  As the plate-like body W, an aluminum sheet was used. The sheet thickness of the sheet is 0.1 to 0.5 mm, and the sheet width of the sheet is 400 to 1500 mm. The outer diameter of the coil 22 wound with this sheet was 300 to 1600 mm.

  As a comparative example, an end E detection test was performed by removing the roller on the upstream side in the rotation direction when the end E was detected. Specifically, when the rotation is clockwise (clockwise) when the edge E is detected (arrow R), the rollers 30 and 34 are removed, and the rotation is counterclockwise (counterclockwise) when the edge E is detected. In the case of (rotating), the rollers 32 and 36 were removed.

  The angle α was fixed at 30 degrees. The rotation direction of the coil 22 at the time of detecting the end portion E was set to be approximately half on the left and right. There are various types of coils 22 as described above, but the coils 22 were randomly assigned in the test conditions.

  In the test, 100 coils of each of the example (configuration of FIG. 1) and the comparative example (no upstream roller) were processed under the same conditions, and this was repeated four times. FIG. 5 is a table showing the results of Examples and Comparative Examples.

  In the example (with rollers), 100% (100/100) end E was detected in all of the four tests.

  On the other hand, in the comparative example (no roller), erroneous detection occurred in any of the four tests, and it was confirmed that it was significantly inferior to the example.

  In particular, among the comparative examples, the number of false detections in the left rotation (L) (second and fourth) is larger than that in the right rotation (R) (first and third). As described above, in the clockwise rotation (R), the distal end portion of the plate-like body W is applied with a centrifugal force due to the rotation of the coil 22 and deforms in a floating direction, whereas in the counterclockwise rotation (L), this centrifugal force is deformed. It is thought that the amount of lift is slightly reduced because the degree of gravity against this increases.

The front view which shows the coil front-end | tip detection apparatus based on this invention The perspective view which shows the structure of a U-shaped bracket Explanatory drawing which shows the positional relationship of a coil support means and a coil front-end | tip detection mechanism. Partial enlarged view for explaining the operation of the coil tip detection device Table showing results of Examples and Comparative Examples

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Coil tip detection apparatus, 12 ... Coil support means, 14 ... Linear motion means, 16 ... Coil tip detection mechanism, 22 ... Coil, 24 ... Linear motion guide, 26 ... Air cylinder, 30, 32, 34, 36 ... Roller 40, 42 ... laser displacement meter, E ... end, W ... plate-like body

Claims (6)

A coil support means provided with a first drive means for pivotally supporting a coil wound with a long plate-like body having a predetermined width and a predetermined thickness, and rotating the coil;
A pair of rollers provided so as to be in contact with the coil and spaced in the circumferential direction of the coil, and a position for detecting lifting of the end of the plate-like body on the surface of the coil between the pair of rollers A coil tip detection mechanism having a sensor at its tip, and
Second driving means for moving the coil tip detection mechanism in the radial direction according to an increase or decrease in the coil diameter;
A coil tip detection device comprising:   2. The coil tip detection device according to claim 1, wherein in the coil tip detection mechanism, two or more pairs of the pair of rollers are provided to be spaced apart from each other in the width direction of the coil.   The coil tip detection device according to claim 1 or 2, wherein the axis of the second driving means forms an angle of 15 to 45 degrees with respect to the vertical axis. The coil tip detection mechanism is
A tape supply means for supplying an adhesive tape;
Tape adhering means for tightly fixing the raised portion of the end of the plate-like body on the surface of the coil to the coil with the supplied adhesive tape;
Control means for driving the tape supply means and the tape sticking means by a signal from the position sensor;
The coil front-end | tip detection apparatus of any one of Claims 1-3 provided with.   The coil tip detection device according to any one of claims 1 to 4, wherein the position sensor is a laser displacement sensor.   The coil tip detection device according to claim 1, wherein two position sensors are provided, and each of the position sensors is provided in the vicinity of the pair of rollers.

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