JP2001059703A - Detecting method for sheet with translucency and moving method of processing unit for sheet thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a detecting method for a sheet with translucency capable of accurately detecting an existence of an object to be detected with translucen cy. SOLUTION: This method is provided with a detector having a light transmitting and receiving sensor consisting of a light-transmitter 2 at one side and a light-receiver 3 at other side with an object 1 to be detected of a sheet with translucency, which is placed between both of the transmitter 2 and receiver 3, where a linear axis 4 connecting between the transmitter 2 and receiver 3 has an inclination angle 7 to a detecting face 8 of the object 1. A light quantity reaching the light receiver 3 can be reduced because the object 1 to be detected reflects a predetermined quantity of light from the light-receiver 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for detecting a light-transmitting sheet by detecting the presence or absence of an object to be detected, which is a light-transmitting sheet, using a detector having a light-receiving sensor. The present invention also relates to a method for moving a light-transmissive sheet processing apparatus for processing based on this detection method.

[0002]

2. Description of the Related Art Various processes are performed by detecting the presence and position of an object. As a detection device for detecting the presence or absence of the object to be detected, a light-emitting / receiving sensor that detects light from the light-emitting portion by detecting whether or not light has arrived at a light receiving portion provided on the opposite side with the object to be detected interposed therebetween It has been known. However, when the object to be detected has a light-transmitting property, light is transmitted through the light-projection sensor, so that the light-receiving sensor is rarely used. When the object to be detected has translucency, as a detector,
Ultrasonic sensors, air sensors, contact sensors, and mirror reflection sensors are used.

[0003]

However, when the object to be detected is an impregnated base material immediately after impregnating a glass base material with an epoxy resin composition or the like, the ultrasonic sensor is required to handle dangerous substances handling solvents and chemicals. It is necessary to surround the sensor to install it in a place, and it is difficult to install it. Further, the contact-type sensor cannot be used because the uncured resin adheres to the detection unit, and the air-type sensor cannot be used because the uncured resin blown off from the impregnated base material blocks the detection unit. Further, since the area of the spot to be detected in the mirror reflection type sensor becomes large, sufficient accuracy cannot be obtained for the moving impregnated base material.

[0004] Further, for example, in order to install a scraper for scraping the resin at the end of the impregnated base material at a location where the end of the impregnated base material is conveyed, the scraper is conveyed while causing slight blurring. It is necessary to detect the position of the end of the impregnated base material and move the scraper in accordance with the position of the end. But,
As described above, there is nothing that can detect the position of the light-transmitting impregnated base material with sufficient accuracy, and therefore, it is not possible to accurately perform processing such as scraping on the end of the impregnated base material.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for detecting a light-transmitting sheet capable of accurately detecting the presence or absence of a light-transmitting object. Is to provide.

Another object of the present invention is to provide a method for moving a light-transmitting sheet processing apparatus for processing a light-transmitting sheet by accurately detecting the position of the light-transmitting sheet. It is in.

[0007]

The invention according to claim 1 is
By sandwiching the object to be detected, which is a sheet having a light-transmitting property, using a detector having a light-emitting sensor having a light-emitting unit on one side and a light-receiving unit on the other side, with respect to the detection surface of the object to be detected. The linear axis connecting the light projecting part and the light receiving part has an inclination angle. As described above, the object reflects a predetermined amount of light from the light projecting unit, so that the amount of light reaching the light receiving unit can be reduced. Here, the tilt angle means an angle between the linear axis and the object to be detected on the sheet in a plane including the linear axis and perpendicular to the sheet-like object to be detected.

According to a second aspect of the present invention, in the method for detecting a light-transmitting sheet according to the first aspect, the inclination angle is in a range of 30 ° to 75 °. According to the above, the object to be detected can reflect a predetermined amount of light from the light projecting unit.

According to a third aspect of the present invention, in the method for detecting a light-transmitting sheet according to the first or second aspect,
The translucent sheet is an impregnated base material immediately after the glass base material is impregnated with the epoxy resin composition. As described above, it is possible to detect the position of the impregnated base material, which is a light-transmitting sheet immediately after the glass base material is impregnated with the epoxy resin composition.

According to a fourth aspect of the present invention, in the method for detecting a sheet having translucency according to any one of the first to third aspects, the detector has a plurality of light receiving / receiving sensors. The moving position of the object is detected by a light projecting sensor. As described above, the movement of the light-transmitting sheet can be detected.

According to a fifth aspect of the present invention, in the method for detecting a light-transmitting sheet according to the fourth aspect, the plurality of light-projecting / receiving sensors include a light-emitting portion on one side sandwiching an object to be detected. And light receiving sections are alternately arranged. According to the above, it is possible to prevent the light from the light emitting unit of one light receiving / receiving sensor from being received by the light receiving unit of another light receiving / receiving sensor.

According to a sixth aspect of the present invention, a position of a processing apparatus for processing a sheet having a light-transmitting property is moved based on a detection result of a sheet having a light-transmitting property detected by the detection method according to any one of the first to fifth aspects. I do. According to the above, the position of the processing device can be moved in accordance with the accurate detection result of the light-transmitting sheet.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic explanatory diagram for explaining an embodiment corresponding to the first and second aspects of the present invention.

The above-described method is a detection method for detecting the presence of the object to be detected 1 which is a sheet having a light-transmitting property, using a detector having a light projection type sensor.

The light projection / reception sensor has a light projecting unit 2 on one side and a light receiving unit 3 on the other side with the object 1 to be detected interposed therebetween. The detected object 1 is conveyed at a predetermined inclination angle 7 with respect to a linear axis 4 connecting the light projecting unit 2 and the light receiving unit 3 of the pair of light receiving / receiving sensors. The inclination angle 7 is
This means an angle between the linear axis 7 and the detection target 1 of the sheet on a plane including the linear axis 4 and perpendicular to the detection target 1. The predetermined inclination angle 7 means that a part of the light emitted from the light projecting unit 2 is reflected as the reflected light 6 on the detection surface 8 of the detection target 2 which is a sheet having a light transmitting property. It is an angle that can be done. Specifically, this angle is preferably 75 ° or less in order to secure the amount of reflection, and practically, in consideration of securing the setting place of the light projecting unit 2 and the light receiving unit 3 and blurring of the object 1 to be detected. Is preferably 30 ° or more. Reference numerals 14 and 15 are optical fibers connected to the light projecting unit 2 or the light receiving unit 3, respectively.

When the object 1 comes to the position of the linear axis 4 connecting the light projecting unit 2 and the light receiving unit 3 of the light projecting / receiving sensor, the light emitted from the light projecting unit 2 Part of the light is reflected by the detection surface 8, and the rest passes through the detection target 1, and reaches the light receiving unit 3 as transmitted light 5. The detecting method is the same as the light emitting unit 2
The presence or absence of the detection target 1 can be detected based on the degree of decrease in the amount of light reaching the light receiving unit 3 with respect to the amount of light emitted from.

FIG. 2 is a schematic diagram of a detection apparatus showing an example of an embodiment using a method according to the third aspect of the present invention. The detection object 1 is the impregnated base material 1a immediately after the glass base material 17 is impregnated with the epoxy resin composition 11 stored in the impregnation tank 12. In this case, the epoxy resin composition 11 is in an uncured state, and is impregnated with the epoxy resin composition 11, so that the impregnated substrate 1a is in a translucent state having translucency. In the above detection device, the light projecting unit 2 and the light receiving unit 3 of the light projecting type sensor are configured such that the end portion 1 of the impregnated base material 1a is formed.
The light-transmitting part 2 is located below and the light-receiving part 3 is located above and at a position where the light-receiving part 3 passes through the impregnated base material 1a. The linear axis 4 connecting the light emitting unit 2 and the light receiving unit 3 is
It is installed at an angle of 30 to 70 ° with respect to the impregnated substrate 1a. The detection device detects whether the end portion 13 of the impregnated substrate 1a, which is a translucent sheet immediately after the glass substrate is impregnated with the epoxy resin composition 11, has passed a predetermined location. Further, the above-described detection device is an electric device in which only the light projecting unit 2 and the light receiving unit 3 of the light projecting / receiving sensor are installed in a hazardous material handling area where a solvent or a chemical is handled, and an optical fiber is installed in a non-hazardous material handling area. It can be easily connected with other types. For this reason, the impregnated base material 1a that is transporting the dangerous material handling place can be detected by the above detection method.

FIG. 3 is an explanatory view of a cross section of a detecting apparatus showing an example of an embodiment using a method according to the fourth and fifth aspects of the present invention. The detection device has a plurality of light receiving / receiving sensors, each of which has a pair of light emitting portions 2a and light receiving portions 3a.
a is arranged with the impregnated base material 1a interposed therebetween. Sign 1
Reference numerals 4 and 15 denote light emitting units 2a and 2b or light receiving units 3a and 3b,
It is an optical fiber that connects these devices to electrical devices installed at a remote location. Reference numeral 16 denotes a mounting device on which the light projecting units 2a and 2b or the light receiving units 3a and 3b are installed. The detecting device includes a light emitting unit 2a, 2b and a light receiving unit 3
a and 3b are alternately arranged. As described above, it is possible to prevent the light from the light projecting portion 2a of one light receiving / receiving sensor from being erroneously received by the light receiving portion 3b of another light receiving / receiving sensor. The light emitting units 2a and 2b and the light receiving units 3a and 3
b does not have to be alternated one by one, and may be arranged alternately based on the number of optical fibers that can be sensed (three in FIG. 3). The detection device can detect the movement of the position of the end portion 13 of the impregnated base material 1a which is a sheet having a light transmitting property. Therefore, the above detection method can continue to detect the movement of the position of the end portion 13 of the impregnated substrate 1a with high accuracy.

FIG. 4 is an explanatory diagram of a processing apparatus showing an example of an embodiment using a method according to the sixth aspect of the present invention. The processing apparatus detects the position of the end portion 13 of the impregnated base material 1a shown in FIG.
A scraper 21 for scraping off the resin at the end 13 of FIG. The processing method using this processing device is performed in the following steps. First, a signal detected by the light receiving section 3 of the light receiving / receiving sensor is sent to the determination device 22 through the optical fiber 15. The position of the end portion 13 of the impregnated base material 1 a is determined by the determiner 22, and this signal is sent to the controller 23. The scraper 21 is attached to a main shaft 24, and the main shaft 2
4 can be moved left and right by a cylinder 25. The controller 23 and the cylinder 25 are connected by a line 26, and based on an instruction signal from the controller 23,
The cylinder 25 is moved so as to move the base shaft 24, and the scraper 21 is controlled so as to come to the position of the end portion 13 of the impregnated base material 1a.
By the above method, the position of the scraper 21 is controlled according to the movement of the end portion 13 of the impregnated base material 1a, so that the resin at the end portion 13 of the impregnated base material 1a can be automatically and continuously scraped off. .

(Evaluation) Next, in order to confirm the effect of the detection method of the present invention, the ratio of the angle of inclination of the impregnated base material to the linear axis connecting the light projecting portion and the light receiving portion and the ratio of the amount of transmitted light was measured. Is shown. As the impregnated substrate, a glass substrate having a thickness of 0.06 mm was used and impregnated with 50% by weight of an epoxy resin. The light emitting part and the light receiving part were installed at a distance of 50 mm. In addition, the amount of light received by the light receiving unit when the impregnated base material does not exist is set to 100%, and the ratio of the amount of light received by the light receiving unit is shown for each angle. As shown in the table, when the inclination angle with the impregnated substrate is 90 °,
Since the amount of light reaches 85%, it is difficult to detect the presence of the impregnated base material. On the other hand, when the inclination angle is 75 ° or less, the amount of light reaches 80% or less, and the detection accuracy is good.

[0021]

[Table 1]

[0022]

According to the first aspect of the present invention, since the object to be detected reflects a predetermined amount of light from the light projecting portion, the amount of light reaching the light receiving portion can be reduced. Therefore, even if the object to be detected has a light-transmitting sheet, the object to be detected can be accurately detected.

Furthermore, the method for detecting a light-transmitting sheet according to the second aspect is particularly effective as an inclination angle at which an object to be detected can reflect a predetermined amount of light from the light projecting portion.

Further, the method for detecting a light-transmitting sheet according to claim 3 is particularly suitable for a position of a translucent translucent impregnated base material immediately after impregnating a glass base material with an epoxy resin composition. Therefore, this method is effective as a method for detecting an impregnated base material that transports a dangerous material handling place.

Further, in the method for detecting a light-transmitting sheet according to the fourth aspect, since the movement of the light-transmitting sheet can be particularly detected, the position of the light-transmitting sheet is detected. be able to.

The method for detecting a sheet having a light-transmitting property according to a fifth aspect of the present invention is a method for detecting light from a light-emitting section of a certain light-receiving sensor and a light-receiving section of another light-receiving sensor. Since it is possible to prevent an error caused by receiving the light at the position, it is possible to accurately detect the position at which the detected object moves. Therefore, the above-described detection method can continue to accurately detect the movement of the detection target.

According to a sixth aspect of the present invention, there is provided a method for moving a light-transmitting sheet processing apparatus, comprising: detecting a position of a light-transmitting sheet with high accuracy; Can be.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory diagram illustrating a detection method of the present invention.

FIG. 2 is a schematic diagram of a detection device showing an example of an embodiment using the detection method of the present invention.

FIG. 3 is an explanatory cross-sectional view of a detection device showing an example of an embodiment using the detection method of the present invention.

FIG. 4 is an explanatory diagram of a processing apparatus showing an example of an embodiment using a moving method according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Detected object 1a Impregnated base material 2 Light emitting part 3 Light receiving part 4 Linear axis 7 Tilt

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Toru Kuwata 1048 Kazuma Kadoma, Kadoma City, Osaka Prefecture F-term in Matsushita Electric Works Co., Ltd. (reference) LL03 NN20

Claims (6)

[Claims] 1. A detector having a light receiving / receiving sensor having a light projecting part on one side and a light receiving part on the other side, sandwiching the object to be detected, which is a sheet having a light transmitting property, A method for detecting a light-transmitting sheet having a linear axis connecting the light projecting portion and the light receiving portion with an inclination angle with respect to the detection surface. 2. The method according to claim 1, wherein the inclination angle is in a range of 30 ° to 75 °. 3. The translucent sheet according to claim 1, wherein the translucent sheet is an impregnated substrate immediately after impregnating an epoxy resin composition into a glass substrate. The method of detecting the sheet that has. 4. The apparatus according to claim 1, wherein the detector has a plurality of light receiving / receiving sensors, and the plurality of light receiving / receiving sensors detect a position to which an object to be detected moves. 3. The detection method according to any one of 3. 5. The plurality of light emitting / receiving sensors according to claim 4,
5. The detection method according to claim 4, wherein the light projecting units and the light receiving units on one side sandwiching the object to be detected are alternately arranged. 6. A translucent sheet which moves a position of a processing apparatus for processing the sheet based on a detection result of the sheet having translucency detected by the detection method according to claim 1. How to move the sheet processing device.