JP4132251B2 - Cylindrical outer peripheral surface label bonding position detection device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for detecting a position of a label attached to an outer peripheral surface of a cylindrical body, and more particularly to an apparatus for detecting a position direction of a label from a level difference between the labels.
[0002]
[Prior art]
In recent years, along with the cordless and the like of portable electronic devices, various types of batteries are used as power sources, and the sales of batteries are diversified. For example, cylindrical batteries such as alkaline manganese batteries are generally displayed and marketed in the form of a plurality of film packages.
[0003]
By the way, when packaging a plurality of cylindrical batteries into a film package, from the viewpoint of appearance, aesthetics, or ease of distinguishing, the direction of the label attached to the outer peripheral surface of the packaged cylindrical battery, It is desirable that the positions and the like are aligned as a whole. From such a viewpoint, when a plurality of cylindrical batteries are collectively formed into a film package, an operation / work for aligning and aligning the label attaching positions and directions on the outer peripheral surface of the cylindrical battery in advance is performed.
[0004]
That is, as a means for detecting the position of a sticking label on the outer peripheral surface of a cylindrical body, (a) an eddy current proximity sensor detects a pasted portion of the label (overlapping portion ... step), and (b) a roller on the outer peripheral surface of the cylindrical battery. There are known methods and apparatuses for detecting the bonded portion of the label by rotating and moving the roller, and (c) detecting the bonded portion of the label by a set of transmission type optical sensors. In the case of a cylindrical battery, the labeling step is usually several tens of μm.
[0005]
[Problems to be solved by the invention]
However, the position detection means for the sticking label has the following disadvantages in practice. First, (a) means for detecting a label-attached portion by an eddy current proximity sensor is only applicable when the attached label is made of metal. That is, nowadays, a label attached to a cylindrical battery or the like is not suitable for the current situation where a resin film or a paper is mainly used.
[0006]
In addition, (b) The means for applying a roller to the outer peripheral surface of the cylindrical body and detecting the bonded part of the label by the rotation and movement of the roller directly touches the attached label. There are problems such as easy to do.
[0007]
Furthermore, (c) the means for detecting the label bonding portion with a set of transmission type photosensors is that the label bonding portion such as a rotated cylindrical battery blocks the light and the light quantity changes abruptly. , To detect the bonded part of the label. Here, the eccentricity of the rotating cylindrical battery can be removed by an electrical filter circuit, but when disturbances such as device vibration are transmitted to the rotating cylindrical battery, etc., it is optically the same as the part where the label is bonded. Since it shows a change, there is a risk of erroneous detection.
[0008]
In addition, (d) detection by image processing, (e) detection by a mark added in advance, etc. are also considered, but in the present situation where label designs and colors are diversified, it cannot be sufficiently handled.
[0009]
The present invention has been made in response to such circumstances, and detects the bonding position of the label attached to the outer peripheral surface of the cylindrical body regardless of the label material, design, color, etc., and the position of the label. -It aims at provision of the label sticking position detection apparatus of the cylindrical outer peripheral surface which can match | combine a direction with high precision.
[0010]
[Means for Solving the Problems]
The invention of claim 1 is a rotating mechanism for rotating a cylindrical body having a label attached to an outer peripheral surface, and a first transmission type for detecting a label bonding step of the cylindrical body rotated by the rotating mechanism and outputting a signal. a photoelectric sensor, a second transmission type photoelectric sensor that outputs a signal by detecting a position other than the label bonding step of the cylindrical body to the rotation, the first transmission type photoelectric sensor and the second transmission type photoelectric The output signal from the sensor is subjected to filter processing for removing a component due to eccentricity and differentiation processing for amplifying an abrupt change in output of the signal, and the first transmission type photoelectric sensor subjected to the filter processing and differentiation processing and the first the output signals from the two transmission type photoelectric sensor to addition processing, activated amplifies the output signal from the second transmission optical sensor that has the differentiating processing an output signal obtained by the addition process, the label An arithmetic circuit that selects a signal output of the matching step, an absolute value conversion circuit that converts the step signal output selected by the arithmetic circuit into an absolute value, and a step signal output that is equal to or greater than a threshold value among the absolute value of the step signal output. a determination circuit configured to adjust the waveform width of the cylinder outer peripheral surface and having a rotation control circuit for controlling the detection to the rotation mechanism position direction of the label bonding step from an output of the decision circuit It is a label bonding position detection device. According to a second aspect of the present invention, in the label affixing position detecting device for the outer peripheral surface of the cylindrical body according to the first aspect, the cylindrical body having a label attached to the outer peripheral surface is a cylindrical battery.
[0011]
In other words, in the present invention, the bonding step of the label attached to the outer peripheral surface of the cylindrical body is detected by the first transmission optical sensor, while the position of the rotating cylindrical body is detected by the second transmission optical sensor. Then, the outputs of both the transmission type optical sensors are subjected to processing such as differential amplification, common mode cancellation, operation amplification, and noise removal, etc., by an arithmetic circuit, with respect to surface vibration or noise due to eccentricity caused by rotation.
[0012]
Thereafter, the output signals of both transmission type photosensors are subjected to addition amplification and operation amplification processing, and only the step signal at the bonded portion of the label is selected. Here, the selected step signal is positive or negative depending on the rotation direction of the cylindrical body, but is unified in one direction by the absolute value conversion circuit. Further, only the target step signal is selected by the determination circuit, and the width of the signal waveform is adjusted to a constant value and output to the control circuit for stopping / rotating the cylindrical body.
[0013]
In this way, the bonding step portion of the label attached to the outer peripheral surface of the cylindrical body is reliably detected, and the position direction of the label is detected with high accuracy.
[0014]
Examples of the cylindrical body include a cylindrical battery, a cylindrical cosmetic container, and other cylindrical containers.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Examples will be described below with reference to FIGS. 1, 2, 3, 4A, 5B, 5A, 5B, and 6A, 6B.
[0016]
FIG. 1 is a block diagram illustrating a main configuration of a cylindrical label bonding position detection device according to an embodiment. In FIG. 1, 1 is a cylindrical body with a label affixed to its outer peripheral surface, for example, a rotating mechanism that rotates a cylindrical battery 2, and 3 is a labeling step 2a of the cylindrical battery 2 that is rotated by the rotating mechanism 1. The first transmission type photoelectric sensor 4 outputs a signal, and 4 is a second transmission type photoelectric sensor that detects the position of the rotating cylindrical battery 2 and outputs a signal.
[0017]
Here, the first transmission photoelectric sensor 3 takes an optical path along the outer peripheral surface of the rotating cylindrical battery 2 and detects the label bonding step 2a at a fixed position. On the other hand, the second transmissive photoelectric sensor 4 is disposed at a position separated from the first transmissive photoelectric sensor 3 and takes an optical path along the outer peripheral surface of the cylindrical battery 2 that rotates in the same manner. 2 position is detected. That is, depending on the rotation direction of the cylindrical battery 2, the two transmissive photoelectric sensors 3 and 4 are opposed to the label bonding step 2a in the front or the rear, and their functions or functions are reversed.
[0018]
Reference numeral 5 denotes an arithmetic circuit for selecting the signal output of the labeling step from the outputs of the first and second transmission photoelectric sensors 3 and 4, and 6 denotes an absolute value of the step signal output selected by the arithmetic circuit 5. This is an absolute value conversion circuit.
[0019]
Here, the outputs of the transmissive photoelectric sensors 3 and 4 are input to the arithmetic circuit 5 via the light receiving portions 3 ′ and 4 ′ which are arranged correspondingly. On the other hand, the absolute value conversion circuit 6 unifies the output of the arithmetic circuit 5 accompanying the rotation direction of the cylindrical battery 2, that is, the step signal in the forward direction or the reverse direction, in one direction.
[0020]
Further, 7 is a determination circuit that selects a waveform of a step signal output that is equal to or greater than a threshold value from the absolute value of the step signal output, and adjusts and outputs the selected waveform width to a constant value, and 8 is the determination circuit 7. Is a rotation control circuit that detects the position direction of the label bonding step 2a from the output of the above and controls the rotation mechanism to stop / rotate the rotation of the cylindrical battery 2 at an arbitrary position.
[0021]
Next, the operation or operation of the cylindrical label pasting position detecting device will be described. A cylindrical body 2, for example, a cylindrical alkaline manganese battery with a required label attached to the outer peripheral surface is set on the rotating mechanism 1, and the rotating mechanism 1 is driven to rotate the cylindrical battery 2 at a rotational speed of about 5 rps. Let On the other hand, the first transmissive optical sensor 3 and the second transmissive optical sensor 4 are respectively operated to emit light from the projector.
[0022]
Here, the light emitted from the first transmissive optical sensor 3 takes an optical path along the peripheral surface of the cylindrical battery 2 and enters the light receiving unit 3 ′, and an analog output corresponding to the amount of received light is output to the arithmetic circuit 5. To enter. At this time, if there is no step 2a on the sticking label of the rotating cylindrical battery 2, a change in light amount A due to the eccentricity of the cylindrical battery 2 is output as a signal, as schematically shown in FIG.
[0023]
On the other hand, when the cylindrical battery 2 is positioned at the step 2a portion of the sticking label due to the rotation of the cylindrical battery 2, a part of the light is blocked according to the sticking label step 2a, and a sudden light quantity change B is output as a signal. In FIG. 2, the light amount change C is an abrupt signal output caused by a disturbance such as device vibration transmitted to the cylindrical battery 2, and the light amount changes A and B are those of the cylindrical battery 2. Positive and negative differ depending on the direction of rotation.
[0024]
In contrast to the operation of the first transmission type photosensor 3, the light emitted from the second transmission type photosensor 4 takes the optical path along the peripheral surface of the cylindrical battery 2 and enters the light receiving unit 4 ′. An analog output corresponding to the amount of received light is input to the arithmetic circuit 5. At this time, if there is no step 2a on the sticking label of the rotating cylindrical battery 2, a change in light amount A due to the eccentricity of the cylindrical battery 2 is output as a signal, as schematically shown in FIG.
[0025]
On the other hand, when the cylindrical battery 2 is positioned at the step 2a portion of the sticking label due to the rotation of the cylindrical battery 2, a part of the light is blocked according to the step 2a of the sticking label. Compared to, a sharp change in light quantity B is output as a signal with a phase shift of 180 °. In FIG. 3, the change C in the light amount is an abrupt signal output due to a disturbance such as vibration of the apparatus being transmitted to the cylindrical battery 2, and the change A and B in the light amount are those of the cylindrical battery 2. Positive and negative differ depending on the direction of rotation.
[0026]
The analog output signal input to the arithmetic circuit 5 is processed as follows. That is, from the analog signal output of the first transmissive optical sensor 3, the change in the signal A having a long period due to eccentricity is first removed by the filter. Then, the abrupt signal output change B due to the step 2a of the sticking label and the abrupt signal output change C due to disturbance are amplified, respectively, and differential processing (waveform processing) as schematically shown in FIG. Is done. On the other hand, the analog signal output of the second transmissive optical sensor 4 is also subjected to differentiation processing as schematically shown in FIG.
[0027]
In this way, by adding both the filtered and differentiated signal outputs, the signal output C due to the disturbance is removed, as shown schematically in FIG. The output B becomes a more amplified waveform. Furthermore, when the signal output of the second transmission type photosensor 4 subjected to the differential processing and the signal output subjected to the addition processing is operated and amplified, as shown schematically in FIG. 5B, the first transmission type photosensor 3 The detected step signal output becomes an enhanced waveform.
[0028]
The emphasized step signal output B is input to the absolute value conversion circuit 6, and the positive and negative voltages of the step detection signal caused by the rotation direction of the cylindrical battery 2 are converted into absolute values and output. When the output from the absolute value conversion circuit 6 is input to the determination circuit 7, only the step signal output B is selected and selected by the comparator processing as schematically shown in FIG. 6 (a). The waveform of the step signal output B is adjusted to a constant width and outputs a pulse signal as schematically shown in FIG.
[0029]
The label bonding step 2a on the outer peripheral surface of the cylindrical battery 2 is output as a pulse signal. When this pulse signal is input to the control circuit 8, the rotation stop or rotation of the rotating mechanism 1 is controlled. . That is, the rotation of the cylindrical battery 2 is stopped, and the label surface attached to the outer peripheral surface of the cylindrical battery 2 operates so as to be in a predetermined position, so that the position and direction of the label are aligned. Thus, since the cylindrical battery 2 can be easily aligned in the position and direction of the attached label, the required film packaging can be performed corresponding to the aligned position and direction.
[0030]
The present invention is not limited to the above examples, and various modifications can be made without departing from the spirit of the invention. For example, as an object to be inspected, a cylindrical battery has been exemplified above. However, a cylindrical container in which a label is attached to an outer peripheral surface and attached with a step can be used.
[0031]
【The invention's effect】
According to invention of Claim 1, 2, the bonding level | step difference of the label affixed on the cylindrical outer peripheral surface can be detected easily and with high precision. That is, regardless of the material, design, color, etc. of the attached label, and without being affected by disturbances such as vibration of the apparatus, the label bonding step can be automatically detected with high accuracy. And it is easy to detect the labeling step with high accuracy, and it is easy to ensure aesthetics by automatically aligning the label's position and direction with this high accuracy detection. For example, film packaging of cylindrical batteries etc. This simplifies and greatly contributes to the improvement of the productivity or mass productivity of the cylindrical battery package.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration of a main part of a label bonding position detection device for an outer peripheral surface of a cylindrical body according to an embodiment.
FIG. 2 is a curve diagram illustrating a signal output example of a first transmission type optical sensor of the position detection device according to the embodiment.
FIG. 3 is a curve diagram showing a signal output example of a second transmission type optical sensor of the position detection apparatus according to the embodiment.
4A and 4B are characteristic diagrams showing an example of differential processing of analog signal output of an arithmetic circuit in the position detection apparatus according to the embodiment.
FIGS. 5A and 5B are characteristic diagrams showing an example of addition amplification of a signal obtained by differentiating the analog signal output of the arithmetic circuit in the position detection apparatus according to the embodiment.
FIG. 6A is a characteristic diagram illustrating an example of a step signal output that has been subjected to absolute value conversion in the position detection apparatus according to the embodiment; FIG. 6B is a characteristic diagram illustrating an example of converting a selected step signal output into a pulse signal.
[Explanation of symbols]
1 ... Rotation mechanism 2 ... Cylinder (cylindrical battery)
2a …… Labeling step 3 …… First transmissive optical sensor 4 …… Second transmissive optical sensor 3 ′, 4 ′ …… Light receiving portion 5 ··· Calculating circuit 6 ··· Absolute value converting circuit 7 ··· ... Judgment circuit 8 ... Rotation control mechanism

Claims (2)

A rotating mechanism that rotates a cylindrical body with a label attached to the outer peripheral surface;
A first transmission photoelectric sensor that detects a labeling step of a cylindrical body rotated by the rotating mechanism and outputs a signal;
A second transmissive photoelectric sensor that detects a position other than the labeling step of the rotating cylindrical body and outputs a signal;
Wherein the first transmission type photoelectric sensor and said second output signal from the transmission type photoelectric sensor, it performs differential processing for amplifying the output change of the filtering and sudden signal to remove components due to the eccentricity, the filter The output signals from the first transmissive photoelectric sensor and the second transmissive photoelectric sensor that have been processed and differentiated are added, and the added output signal and the differentiated second transmissive optical sensor are added. an operation circuit for operating amplifies the output signal and selects the signal output of the label bonding step,
An absolute value conversion circuit for converting the step signal output selected by the arithmetic circuit into an absolute value;
A determination circuit that adjusts and outputs the waveform width of the step signal output equal to or greater than the threshold value among the absolute value of the step signal output; and
Said cylinder outer peripheral surface and having a rotation control circuit which detects and outputs the position-direction of the label bonding step from controlling the rotation mechanism of the decision circuit label bonding position detecting device.   2. The label bonding position detecting device for an outer peripheral surface of a cylindrical body according to claim 1, wherein the cylindrical body having a label attached to the outer peripheral surface is a cylindrical battery.

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