JP2017226485A - Device and method for detecting bobbin residual amount - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for detecting a bobbin residual amount inexpensively and reliably detecting a residual amount of wire wound around a bobbin.SOLUTION: A device for detecting a residual amount of wire 53 wound around a bobbin 52 includes: a first imaging part 10a imaging a first imaging area including a body part of the bobbin 52 and generating first image data; a second imaging part 10b imaging a second imaging area different from the first imaging area including the body part of the bobbin 52 and generating second image data; and a control part extracting each of a first residual area and a second residual area corresponding to areas where the wire 53 occupies in the bobbin 52 and detecting the residual amount of the wire on the basis of the sizes of the first residual area and the second residual area.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a bobbin remaining amount detecting apparatus and method for detecting the remaining amount of a wire wound around a bobbin.

  In the process of unwinding and twisting wires such as metal wires from multiple bobbins, the remaining amount of wire wound around each bobbin needs to be replaced with a new bobbin when the remaining amount of wire wound around each bobbin is detected. This has been done conventionally. For example, in Patent Document 1, the body part of a bobbin is imaged with a camera, and the obtained image data is masked and compared with image data registered as a master. An apparatus for detecting a quantity is disclosed.

Japanese Utility Model Publication No. 4-37167

  However, the apparatus disclosed in Patent Document 1 may be difficult to accurately extract image data of a wire when the detection environment changes due to changes in the bobbin layout in the factory or the intrusion of external light. It was. In particular, since the bobbin becomes large for a large stranded wire machine, there is a problem that it is difficult to detect the remaining amount of the wire correctly with an inexpensive camera when attempting to image the entire axial direction of the bobbin barrel.

  Accordingly, an object of the present invention is to provide a bobbin remaining amount detecting apparatus and method that can reliably detect the remaining amount of a wire wound around a bobbin at a low cost.

  The object of the present invention is an apparatus for detecting the remaining amount of wire wound around a bobbin, wherein the first image area including the body of the bobbin is imaged to generate first image data. A first imaging unit, a second imaging unit that generates a second image data by imaging a second imaging region different from the first imaging region including the bobbin body, and the first image data In the second image data, a first remaining region and a second remaining region, which are regions occupied by the wire with respect to the bobbin, are extracted, respectively, and the sizes of the first remaining region and the second remaining region are extracted. This is achieved by a bobbin remaining amount detecting device including a control unit that detects the remaining amount of the wire based on the length.

  In this bobbin remaining amount detecting device, the control unit is configured to detect the remaining wire when the size of at least one of the first remaining region and the second remaining region is lower than a preset reference value. It is preferable to detect a decrease in the amount.

  In addition, the object of the present invention is a method for detecting the remaining amount of wire wound around a bobbin using the above-described bobbin remaining amount detecting device, wherein the first imaging region and the second imaging region. Is achieved by a bobbin remaining amount detecting method in which both are set at both axial ends of the bobbin.

  According to the bobbin remaining amount detecting device and method of the present invention, the remaining amount of the wire wound around the bobbin can be reliably detected at low cost.

It is a block diagram which shows schematic structure of the bobbin residual amount detection apparatus which concerns on one Embodiment of this invention. It is explanatory drawing of the bobbin residual amount detection method which concerns on one Embodiment of this invention. It is explanatory drawing which shows an example of the setting method of an imaging area. It is explanatory drawing which shows the other example of the setting method of an imaging area. It is explanatory drawing which shows the further another example of the setting method of an imaging area.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a block diagram showing a schematic configuration of a bobbin remaining amount detecting apparatus according to an embodiment of the present invention. As shown in FIG. 1, the bobbin remaining amount detection device 1 includes a first imaging unit 10 a, a second imaging unit 10 b, a control unit 12, an input unit 14, and an output unit 16.

  As the first imaging unit 10a and the second imaging unit 10b, for example, a commercially available web camera, CCD camera, or the like can be used. As will be described later, a bobbin body around which a wire is wound is partially formed. Imaging is performed to generate first image data and second image data, respectively.

  The control unit 12 performs image processing on the first image data and the second image data input from the first imaging unit 10a and the second imaging unit 10b, and is an area occupied by the wire rod with respect to the bobbin. A first remaining area and a second remaining area are extracted.

  The extraction of the first remaining area and the second remaining area can be performed by a known method. For example, the body of the bobbin is pre-colored or a colored cutting sheet is wrapped around it so that it can be easily distinguished from the wire such as a metal wire wound around the body by luminance. Further, by performing binarization processing on the first image data and the second image data, it is possible to extract the first remaining area and the second remaining area, respectively.

  When the captured first image data (or second image data) does not include a background, the first remaining area (or the second image data) included in the first image data (or second image data) Since the portion other than the second remaining region becomes the first exposed region (or the second exposed region) where the body portion of the bobbin is exposed to the outside, it occupies the body portion of the bobbin from each size. The size of the first remaining region (or the second remaining region) (for example, the ratio of the area of the wire to the entire area of the bobbin body) can be calculated. On the other hand, when the background is included in the first image data (or the second image data), the outline of the bobbin and the wire is extracted by edge processing, and the background is removed based on this outline. The size of the first remaining area (or the second remaining area) occupying the body portion of the bobbin can be calculated.

  The controller 12 detects the remaining amount of the wire based on the sizes of the first remaining area and the second remaining area extracted from the first image data and the second image data. For example, the sizes of the first remaining area and the second remaining area are respectively compared with a reference value set in advance, and when at least one of the sizes is lower than the reference value, a decrease in the remaining amount of the wire is detected. Can be set as follows. Alternatively, it can be set to detect a decrease in the remaining amount of the wire when both the size of the first remaining region and the second remaining region are lower than the reference value. The reference values of the first remaining area and the second remaining area may be the same value or may be different from each other.

  The input unit 14 is an interface such as a keyboard and a mouse. For example, the control unit 12 can set a detection condition for the remaining amount of wire rods, change a reference value, and the like.

  The output unit 16 includes a display, a lamp, a speaker, and the like. When the control unit 12 detects a decrease in the remaining amount of the wire, the output unit 16 notifies the operator by replacing the bobbin with a screen display, light, sound, vibration, or the like. Can do. The output unit 16 may be a communication device capable of wireless communication with a wearable terminal or the like worn by the worker.

  Next, as an example of a method for using the above-described bobbin remaining amount detecting device 1, a method for detecting the remaining amount of the bobbin 52 used in the stranding machine 50 illustrated in FIG. 2 will be described. The stranded wire machine 50 shown in FIG. 2 is a type in which the stranded wire side rotates, and the wire rods 53 are respectively fed out from a plurality of bobbins 52 supported by a support member 51 fixed to the ceiling 60 or the like, and these are bundled together Then, the stranded wire is taken up by a take-up shaft 57 that is inserted between a pair of feed rollers 54 and 55 and supported by a horizontally rotatable table 56.

  When detecting the remaining amount of the wire 53 in the bobbin 52 of the twisting machine 50 configured as described above, the first imaging unit 10a and the second imaging unit 10b are arranged in the vicinity of the bobbin 52, The first imaging area and the second imaging area, which are imaging areas, are set so as to partially include the body of the bobbin 52. For example, as shown in FIG. 3, the first imaging area A1 is set on one end side in the axial direction of the bobbin 52, and the second imaging area A2 is set on the other end side in the axial direction of the bobbin 52. The imaging area A1 and the second imaging area A2 can be set with an interval in the axial direction of the bobbin 52. When there are a plurality of bobbins 52 for feeding out the wire 53, it is preferable to install the first imaging unit 10a and the second imaging unit 10b for each bobbin 52.

  When the remaining amount of the wire 53 wound around the bobbin 52 decreases, the body of the bobbin 52 is gradually exposed from the gap of the wire 53, so that the first imaging region A1 and the second imaging region A2 in the first imaging region A2 The remaining area and the second remaining area are reduced. Since the exposure of the body portion of the bobbin 52 is more likely to appear at the end in the axial direction than at the central portion in the axial direction of the bobbin 52, the control unit 12 uses at least one of the first remaining region and the second remaining region as a reference. By detecting a decrease in the remaining amount of the wire when the value becomes lower than the value, the operator can grasp the replacement time of the bobbin 52 at an early stage. On the other hand, when the control unit 12 detects a decrease in the remaining amount of the wire when both the first remaining region and the second remaining region are lower than the reference value, the remaining amount of the wire is decreased. It can be detected reliably.

  The settings of the first imaging area A1 and the second imaging area A2 shown in FIG. 3 are not particularly limited, and the first imaging area A1 and the second imaging area A2 are set in the surrounding environment such as outside light. It may be set individually in other areas that are not easily affected by the above. In the bobbin remaining amount detecting device 1 of the present embodiment, since the first imaging unit 10a and the second imaging unit 10b can individually capture the body of the bobbin 52, an inexpensive camera such as a web camera with a narrow viewing angle. Even if it is used, the remaining amount of the wire 53 wound around the bobbin 52 can be reliably detected. The first imaging area A1 and the second imaging area A2 are preferably set to different areas, but may partially overlap.

  As shown in FIG. 4, the first imaging unit 10 a and the second imaging unit 10 b may be installed in different imaging directions, and each imaging direction is appropriately set so as to prevent erroneous detection. be able to.

  Moreover, the structure further provided with other imaging parts other than the 1st imaging part 10a and the 2nd imaging part 10b may be sufficient. For example, as shown in FIG. 5, in addition to the first imaging area A1 and the second imaging area A2 respectively set at both axial ends of the bobbin 52, third imaging areas at both axial ends of the bobbin 52 You may set A3 and 4th imaging area A4, respectively. In this case, by detecting a decrease in the remaining amount of the wire when the remaining area is lower than the reference value in either of the imaging areas on the same side (between A1-A3 and A2-A4), It is possible to achieve both early detection of the remaining amount decrease and reliable detection.

DESCRIPTION OF SYMBOLS 1 Bobbin residual amount detection apparatus 10a 1st imaging part 10b 2nd imaging part 12 Control part 50 Stranding machine 52 Bobbin A1 1st imaging area A2 2nd imaging area

Claims (3)

A device for detecting the remaining amount of wire wound around a bobbin,
A first imaging unit that captures a first imaging region including the bobbin body and generates first image data;
A second imaging unit that images a second imaging region different from the first imaging region including the bobbin body and generates second image data;
In the first image data and the second image data, a first remaining region and a second remaining region, which are regions occupied by the wire with respect to the bobbin, are extracted, respectively, and the first remaining region and the second remaining image data are extracted. A bobbin remaining amount detection device comprising: a control unit that detects the remaining amount of the wire based on the size of the remaining region of 2.   The control unit detects a decrease in the remaining amount of the wire when the size of at least one of the first remaining region and the second remaining region is lower than a preset reference value. The bobbin remaining amount detection device as described in 1. A method for detecting the remaining amount of wire wound around a bobbin using the bobbin remaining amount detecting device according to claim 1,
A bobbin remaining amount detecting method for setting the first imaging region and the second imaging region at both axial ends of the bobbin, respectively.

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