JP2019067838A - Component shortage foretelling device and component shortage foretelling method - Google Patents

Abstract

To provide a component shortage foretelling device with a simple structure, which foretells a reel that component shortage will arise soon.SOLUTION: A component shortage foretelling device includes: a base; a reference rod; reference rod energization means; a display rod; display rod energization means; and a stopper. The reference rod is axially supported to a fixing axis fixed to a base surface. The reference rod energization means energizes the reference rod so as to be contacted to a tape component wound to a reel. The display rod is axially supported to an end part of the side opposite to the fixing axis of the reference rod. The display rod energization means plays a role of a direction display rod of which a corner formed by the reference rod becomes large. The stopper regulates the motion of the display rod so that a tip of the display rod is not separated from the fixing axis when the corner formed by the reference and a front surface of a base is less than a predetermined value, and cancels the regulation when the corner formed by them becomes the predetermined value or more. By achieving the above structure, it is detected that a remaining amount of the tape component becomes the predetermined value or less, and therefore, the component shortage can be foretold.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an out-of-parts notification device and an out-of-parts notification method.

  In component supply to a component mounting machine, a form in which components are stored in a tape and the tape is wound around a reel is often used. Hereinafter, a tape containing a component will be referred to as a tape component. In operation of the component mounting machine, a reel wound with tape components is set in the component supply section of the component mounting machine, and the tape is pulled out by a feeder to take out the components. If the parts are used up to the end of the reel in this manner, the parts will be exhausted. At this time, if the end of the tape enters the component mounting machine, it takes a lot of time and labor to set a new component. For this reason, splicing is performed to connect the end of the old tape part and the tip of the new tape part before the part is completely cut. With splicing it is possible to resume the supply of the part with a simple task and a short stop time. For this reason, a method has been devised which predicts the breakage of parts before the parts are completely cut and instructs supply of the parts.

  For example, in Patent Document 1, the number of stored parts of a reel mounted on a part mounting machine is recorded, the number of remaining parts of a reel is calculated using production control information read from the outside, and a warning is issued before parts are lost. A method of outputting is disclosed. In this technology, a component mounting machine uses a head having a communication function of exchanging production control information, the number of components stored in a reel, etc. with the outside.

  Further, Patent Document 2 discloses a technique for accurately obtaining the remaining number of parts by installing a sliding part counter on a tape part and measuring the number of parts passing through the counter. In this technique, the number of parts passing through the slide is subtracted from the number of stored housings in advance, and a warning is issued when the number of remaining parts becomes equal to or less than a predetermined number.

  However, in the techniques of Patent Document 1 and Patent Document 2, there is a problem that the component mounting machine needs to have a counting function and a communication function in advance, and the apparatus itself becomes expensive. In addition, there is a problem that it can not be applied to existing equipment that does not have these functions.

  On the other hand, as a method of easily predicting the breakage of parts, a method of predicting the breakage of parts by detecting that the winding diameter of the tape parts has become smaller than a predetermined value has been studied. For example, Patent Document 3 discloses a method of providing an optical sensor for detecting light passing between a pair of side plates of a reel. In this technique, light passing between a pair of side plates of the reel is emitted, and while the winding diameter of the tape component is larger than a predetermined value, the reflected light is not returned, and the reflected light is returned when the winding diameter is smaller than a predetermined value. A reflector is provided at the position. For this reason, when the reflected light is detected, it is detected that the winding diameter of the tape component has become smaller by a predetermined value, that is, the remaining amount has become smaller than the predetermined amount. In this way, it can be easily predicted that the parts will be exhausted.

Japanese Patent Publication No. 2001-203493 JP, 2006-190818, A JP-A-5-167298

  As described above, the methods of Patent Documents 1 and 2 have a problem that the apparatus becomes expensive. Further, in the technology of Patent Document 3, it is necessary to provide optical sensors as many as the number of reels, and there is a problem that the number of optical sensors increases as the number of reels increases.

  The present invention has been made in view of the above-mentioned problems, and can provide an out-of-parts advance notice apparatus for giving notice of a reel which is almost out of parts with a simple configuration.

  In order to solve the above-mentioned subject, the parts shortage noticing device of the present invention has a base, a reference stick, a reference stick energizing means, a display stick, an indicator stick urging means, and a stopper. The reference rod is pivotally supported by a fixed shaft fixed to the base surface. The reference bar biasing means biases the reference bar into contact with the tape component wound on the reel. The display rod is pivotally supported at the end opposite to the fixed shaft of the reference rod. The display rod biasing means is a direction display rod whose angle with the reference rod is large. When the angle between the reference bar and the surface of the base is less than a predetermined value, the stopper restricts the movement of the display bar so that the tip of the display bar does not separate from the fixed axis, and the angle formed becomes a predetermined value or more Release restrictions when it With the above configuration, it is possible to detect that the remaining amount of the tape component has become equal to or less than a predetermined value, and to give notice of component shortage.

  An advantage of the present invention is that it is possible to provide an out-of-parts advance notice device that gives notice of a reel that is near out of parts with a simple configuration.

FIG. 2 is a block diagram showing an out-of-parts notification device of the first embodiment. It is a side view showing a parts out warning device of a 2nd embodiment. It is a side view which shows the intermediate | middle operation state of the notification apparatus of parts depletion of 2nd Embodiment. It is a side view which shows the out-of-parts advance notice state of the out-of-parts notice device of a 2nd embodiment. It is a top view showing the picture seen from the upper part of the notice device of parts breakage of a 2nd embodiment. It is a side view which shows the out-of-parts notice device of a 3rd embodiment. It is a side view which shows the intermediate | middle operation state of the notification apparatus of components depletion of 3rd Embodiment. It is a side view which shows the out-of-parts advance notice state of the out-of-parts notice device of a 3rd embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the embodiments described below are technically preferable limitations for carrying out the present invention, but the scope of the invention is not limited to the following. In addition, the same number may be attached | subjected to the same component as each drawing, and description may be abbreviate | omitted.

First Embodiment
FIG. 1 is a schematic side view showing the shortage prediction device of the first embodiment. The out-of-parts advance notice apparatus has a base 1, a reference rod 2, a reference rod biasing means 3, a display rod 4, a display rod biasing means 5, and a stopper 6.

  The reference rod 2 is pivotally supported by a fixed shaft 11 fixed to the base 1 and biased by a reference rod biasing means 3 to abut the surface of the tape component 13 wound around the reel 12 around the fixed shaft 11 ing.

  The display rod 4 is pivotally supported at the end opposite to the fixed shaft 11 of the reference rod 2 by the floating shaft 14 floating with the reference rod, and the angle between the display rod 4 and the reference rod 2 with respect to the floating shaft 14 is It is biased by the display rod biasing means 5 in the increasing direction. When the angle between the stopper 6 and the surface of the base 1 of the reference rod 2 is equal to or less than a predetermined value, the distance between the end of the display rod 4 opposite to the floating shaft 14 and the fixed shaft 11 is equal to or more than the predetermined value. Restrict the movement of the display bar 4 so as not to

  With the above configuration, when the winding diameter of the tape component 13 is larger than a predetermined value, that is, the remaining amount of the component is larger than the predetermined value, the display rod 4 is accommodated below the reference rod 2. Then, when the winding diameter of the tape component 13 becomes smaller than the predetermined value, that is, when the component remaining amount becomes smaller than the predetermined value, the display rod 4 exceeds the stopper 6 and protrudes to the outside of the reference rod 2 . By this operation, the out-of-parts notification device can notify out-of-parts.

Second Embodiment
FIG. 2 is a side view showing the breakage prediction device of the present embodiment. In addition, in FIG. 2, the state which remove | eliminated the side plate of the near side among a pair of side plates which comprise a reel is drawn so that each element may be seen.

  The parts breakage noticing device is a loose rod disposed at the end opposite to the fixed shaft 102 of the reference rod 103 pivotally supported at one end on the fixed shaft 102 fixed to the base 101 of the components feeding device. And a display rod 105 pivotally supported on the shaft 104. In addition, the first compression spring 106 urging the reference bar 103 to abut the surface of the tape component 202 wound around the reel 201, and the display bar 105 toward the base 101 so as to separate from the reference bar 103. And a second compression spring 107 for biasing. Furthermore, when the angle which the reference bar 103 forms with the surface of the base 101 is smaller than a predetermined value, the display bar 105 has a stopper 108 for limiting the tip of the display bar 105 so that the distance to the fixed shaft 102 is less than the predetermined value. . The reel 201 is pressed against the reel support 203 by gravity and supported. Also, a camera 300 may be provided to detect the display rod 105 from above the reel 201.

  When the tape component 202 is taken out by a feeder (not shown) and consumed, the winding diameter of the tape component 202 becomes smaller, and the angle between the reference rod 103 and the surface of the base 101 becomes larger. In addition, the angle between the reference bar 103 and the display bar 105 also increases. FIG. 3 is a generic view showing the state in which the tape component 202 is consumed and the winding diameter of the tape component 202 is reduced. In the state of FIG. 3, the tip of the display rod 105 opposite to the floating shaft 104 is locked to the stopper 108. At this time, when the camera 300 captures an image from above the reel 201, the display rod 105 hardly captures the image.

When the tape component 202 is further consumed, the winding diameter is further reduced, and the angle between the reference rod 104 and the surface of the base 101 is increased, and the tip of the display rod 105 is detached from the stopper 108. This state is shown in the side view of FIG. In this state, indicator bar 105
However, the biasing force of the second compression spring 107 causes the reference rod 103 to project outward from the bottom. Then, the display rod 105 appears in the image captured by the camera 300. That is, when the display rod 105 is viewed from above, it is possible to detect that the parts are short. The appearance of the display rod 105 can be clearly understood by making the color and color pattern of the reference rod 103 and the display rod 105 different.

  Next, an example in which the above-described out-of-parts notice device is applied to a component supply device 1000 in which a plurality of reels 201 wound with the tape component 202 are arranged in the width direction of the reels will be described. FIG. 5 is a plan view showing an example of an image captured by the camera 300 from above the reel 201 of the component supply device 1000 described above.

  In this example, nine tape components 202 wound around a reel 201 are shown. The reference bar 103 is exposed below the respective tape parts (202a, 202b,..., 202i). As the tape component 202 is consumed, the winding diameter of the tape component 202 decreases, so the exposure of the reference bar 103 increases. Then, when the tape component 202 is further consumed, the display rod 105 is exposed as described above. In the example of FIG. 5, consumption of the tape parts 202c and 202e progresses, and the display rods 205c and 205e are reflected in the image. It can be grasped from this image that these parts are nearly exhausted. In addition, if indicator rods with unique appearance (color, color pattern, etc.) are prepared for each type of tape component, it is also possible to grasp the type of parts with nearly exhausted components from the type of indicator rod. is there.

  As described above, according to the present embodiment, it is possible to provide an out-of-parts notice device for giving a notice of out-of-parts with a simple configuration.

Third Embodiment
There are various diameters of reels on which the tape parts are wound. For this reason, a set of reference bars and indicator bars that match the reel diameter is required. However, in general, since the diameter of the reel is standardized, many ranges can be covered by preparing several types of sets in accordance with the standardized standard.

  FIG. 6 shows a configuration example when using the tape component 212 wound around a reel 211 having a smaller diameter than the second embodiment. In conformity with the reel 211, a reference bar 113 and a display bar 115 having different lengths from those of the second embodiment are used. Also, according to that, a set of a first compression spring 116 and a second compression spring 117 is used. With such a tool stand, the out-of-parts advance notice can be performed just as in the second embodiment.

  FIG. 7 shows the side surface when the tape component 212 is consumed to a certain extent and the display rod 114 is locked to the stopper 118.

  FIG. 8 shows the state in which the consumption of the tape component 212 is further advanced and the display rod 115 is removed from the stopper 118. In this state, since the display rod 115 is exposed outward from the lower side of the reference rod 113, it is possible to detect from the image taken by the camera 300 that parts are near.

  As described above, according to the present embodiment, even if the diameter of the reel changes, it is possible to give notice of component breakage as in the second embodiment.

  The present invention has been described above by taking the above-described embodiment as an exemplary example. However, the present invention is not limited to the above embodiment. That is, the present invention can apply various aspects that can be understood by those skilled in the art within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1, 101 Base 2, 103, 113 Reference bar 3 Reference bar biasing means 4, 105, 115 Display bar 5 Display bar biasing means 6, 108, 118 Stopper 11, 102 Fixed shaft 12, 201, 211 Reel 13, 202 , 212 tape parts 14, 104 idler shaft 106 first compression spring 107 second compression spring 203 reel support 300 camera 1000 parts supply device

Claims (10)

A base on which the device is based,
A reference rod pivotally supported at one end on a fixed shaft fixed to the base;
Reference rod biasing means for biasing the reference rod to abut on the surface of a tape component wound on a reel around the fixed axis;
A display rod pivotally supported by a floating shaft disposed at an end of the reference rod opposite to the fixed shaft and floating with the reference rod;
Display rod biasing means for biasing the display rod in a direction in which the angle between the reference rod and the display rod increases with the idle axis as a center, the angle between the reference rod and the base surface is a predetermined value And restricting the movement of the display rod so that the distance between the end opposite to the floating axis of the display rod and the fixed axis does not exceed a predetermined value, and the surface of the base of the reference rod is restricted And a stopper for releasing the restriction on the movement of the display rod when the angle between the two becomes equal to or more than a predetermined value. The apparatus according to claim 1, wherein the reference rod biasing means and the display rod biasing means are compression springs. The out-of-parts notice device according to any one of claims 1 and 2, wherein the color of the reference bar and the color or color pattern of the display bar are different. The out-of-parts notice device according to any one of claims 1 to 3, wherein the reference bar and the display bar have a width smaller than the distance between a pair of side plates constituting the reel. An out-of-parts notice device according to any one of claims 1 to 4;
And an imaging device for photographing the out-of-parts notification device from above the reel. A plurality of the reels in which the tape parts are wound are arranged in the width direction of the reels, and the out-of-parts notice device according to any one of claims 1 to 4 corresponding to each of the reels. An out-of-parts notice system characterized in that it is arranged. 7. The out-of-parts notice system according to claim 6, further comprising an imaging device for photographing the out-of-parts notice device from above the reel. Based on the size of the image of the display bar in the image captured by the imaging device,
The out-of-parts notice system according to claim 7, wherein the occurrence timing of the out-of-parts is estimated. One end of the reference rod is pivotally supported by a fixed shaft fixed to the base that is the base of the device,
Urging the reference rod to abut the surface of the tape component wound on a reel, with the fixed axis as a center;
At the end of the reference bar opposite to the fixed axis, an idle axis is arranged to move together with the reference bar,
One end of a display rod is pivotally supported on the floating shaft,
Urging the display rod in a direction in which the angle between the reference rod and the display rod is larger around the floating axis;
When the angle between the reference bar and the surface of the base is less than a predetermined value, the display may be performed so that the distance between the end opposite to the floating axis of the display bar and the fixed axis does not exceed the predetermined value. A method according to claim 1, further comprising: restricting the movement of the rod and releasing the restriction of the movement of the display rod when the angle between the reference rod and the surface of the base exceeds a predetermined value. Photographing the out-of-parts notice device from above the reel;
10. The method according to claim 9, further comprising the step of determining presence or absence of an out-of-parts notice based on a photographed image of the out-of-parts notice device.

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