JP2003031991A - Method and device for detecting circuit board for circuit board working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the circuit board detecting method/device of a circuit board working machine which can securely detect and stop multiple types of circuit boards, and to improve transport reliability and productivity, in the circuit board working machine. SOLUTION: When the circuit board 25 is detected and stopped in the respective stop positions of the circuit board 25 in a transfer path 44 of the circuit board working machine, a first board detection sensor 51 and a second board detection sensor 53 which differ in detection characteristics are arranged. At least the board detection sensor 51 or 53 is switched and used, based on information on the circuit board 25 which stops either sensor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention detects a circuit board that has been transported on a transport path when transporting the circuit board to a predetermined position on a transport path in a circuit board processing machine and then stops the circuit board. TECHNICAL FIELD The present invention relates to a circuit board detection method and a circuit board detection device that are stopped at, and particularly to a technique for accurately detecting a circuit board.

[0002]

2. Description of the Related Art There are various types of circuit board processing machines for manufacturing circuit boards on which electronic components are mounted. However, all of them are equipped with a transfer path for transferring the circuit board, and at a predetermined processing position. Processing is performed by stopping the circuit board. For example, an electronic component mounter that automatically mounts electronic components on a circuit board includes a loader unit 3 for loading the circuit board 1 into the facility as shown in FIG. 6, and a component supply unit (not shown) for supplying electronic components. , A table portion 7 of an XY robot that picks up electronic components from the component supply portion and mounts them on a predetermined position of the circuit board 1.
And an unloader section 5 that carries out the circuit board 1 that has been mounted to the outside of the facility.

As described above, the transfer path of the circuit board is composed of the loader section 3, the table section 7, and the unloader section 5.
The loader unit 3 puts the unmounted circuit board 1 on standby while mounting the electronic component. The table section 7 performs a production process of mounting electronic components on the circuit board 1. Unloader section 5
Waits until the circuit board 1 after the completion of the production process is loaded and conveyed to the next process. Although not shown, each of the loader unit 3, the table unit 7, and the unloader unit 5 includes a conveyor belt for conveying the circuit board 1 and a drive source for driving the conveyor belt 9.

The transporting operation of the circuit board on such a transporting path is performed as follows. That is, the circuit board 1 conveyed from the previous step is carried into this conveyance path by the conveyance belt of the loader unit 3. The loader unit 3 detects the board detection sensor 13a while the circuit board 1 is present on the table unit 7.
When the circuit board 1 is detected, the conveyor belt 9 is stopped to enter the standby state. On the other hand, if the circuit board 1 does not exist in the table section 7, the loader section 3 carries the circuit board 1 into the table section 7. When the board detection sensor 13b detects the circuit board 1, the table portion 7 stops the conveyor belt 9 to stop the circuit board 1 at a predetermined processing position. The circuit board 1 on which the electronic components have been mounted at this processing position is unloaded to the unloader unit 5. When the board detection sensor 13c detects the circuit board 1, the unloader unit 5 stops the conveyor belt and enters a standby state.

In this way, the loader unit 3, the table unit 7,
In the unloader section 5, the circuit board 1 that has been carried in is detected by the board detection sensors 13a, 13b, 13c, and the carrying operation of the carrying belt is stopped. Conventionally, the substrate detection sensors 13a, 13b, 13c detect the circuit substrate 1 by irradiating the circuit substrate 1 with the converged light emitted from the light emitting element and receiving the return light thereof, so-called limited reflection type substrate detection. The sensors 13a, 13b, 13c were used.

[0006]

However, in the above-mentioned conventional circuit board detection method for electronic component mounting machines, only the limited reflection type board detection sensor is used to detect the circuit board at each stop position of the conveyance path. Therefore, with the recent increase in the number of types of circuit boards, it tends to be difficult to detect them. For example, in the case of a multi-piece board having perforations or notches, or in the case of a circuit board on which various electronic components have been mounted, these perforations, notches, electronic components, etc. may be erroneously detected as the circuit board end. was there. If such an erroneous detection occurs, it becomes impossible to smoothly carry the circuit board on the carrying path, which lowers the productivity of the electronic component mounter.

The present invention has been made in view of the above circumstances, and provides a circuit board detection method and a circuit board detection device for a circuit board processing machine capable of surely detecting and stopping various types of circuit boards. The purpose of the present invention is to improve the transportation reliability and productivity of the circuit board processing machine.

[0008]

A circuit board detecting method for an electronic component mounting machine according to a first aspect of the present invention for achieving the above object is a circuit board detecting method for a circuit board up to a predetermined position in a carrier path in a circuit board processing machine. A circuit board detection method of a circuit board processing machine for detecting the circuit board during transportation of the circuit board and stopping at the predetermined position when the circuit board is transported and stopped.
A first substrate detection sensor that irradiates the circuit board with diffused light and detects reflected light from the circuit board, and a second board that irradiates the circuit board with convergent light and detects reflected light from the circuit board. A detection sensor is disposed in the transport path, and at least one of the first board detection sensor and the second board detection sensor is selectively operated according to the type of the circuit board to be stopped. It is characterized by switching and using.

In this circuit board detecting method for a circuit board processing machine, it is possible to detect all circuit boards with high accuracy by using an optimum board detecting sensor according to the circuit board. It is possible to reliably determine the difference between a multi-piece board having notches or a board on which components are mounted, and to stop and control the circuit board with high accuracy. As a result, the reliability of transport control can be improved.

According to a second aspect of the present invention, there is provided a circuit board detection method for a circuit board processing machine, wherein the first board detection sensor and the second board detection sensor are provided above and below the circuit board in the transfer path, respectively. The circuit boards are arranged so as to face each other in the vertical direction, and a circuit board is detected by comparing a detection signal from a board detection sensor above the conveyance path with a detection signal from a board detection sensor below the conveyance path.

In this circuit board detection method for the circuit board processing machine, the detection signals from the first board detection sensor and the second board detection sensor arranged above and below the circuit board in the transfer path are both upper and lower. Compare. As a result, for circuit boards with different front and back colors and densities, or mounting states of electronic components, detection can be performed using either the upper or lower board detection sensor that is suitable for the upper or lower side, depending on the characteristics of these circuit boards. By doing so, the reliability of detection accuracy can be improved.

According to a third aspect of the present invention, there is provided a circuit board detecting method for a circuit board processing machine, wherein prior to the detection of the circuit board, at least one of the first board detecting sensor and the second board detecting sensor is used. The reflected light is detected by each of the substrate detection sensors while relatively moving in the direction parallel to the circuit board with respect to the circuit board, and the detection position of the circuit board is determined based on the detection information obtained by the movement. It is characterized in that the substrate detection sensor is moved to the detection position.

In this circuit board detecting method for the circuit board processing machine, when the circuit board is carried into each stop position of the carrying path, at least one of the first board detecting sensor and the second board detecting sensor Detection is performed while scanning the circuit board surface while relatively moving in a direction parallel to the board surface of the circuit board. Then, each board detection sensor is arranged at the optimum sensor position based on the scan detection information of the circuit board obtained by this scanning. This maximizes the detection function of each substrate detection sensor at the optimum position.

A circuit board detection device for a circuit board processing machine according to a fourth aspect is a circuit board processing machine having a transfer path for transferring a circuit board to a predetermined position and stopping the circuit board, the circuit board being transferred. A circuit board detection device for a circuit board processing machine for detecting a light source and stopping at the predetermined position, the first board detection sensor irradiating the circuit board with diffused light and detecting reflected light from the circuit board. A second substrate detection sensor for irradiating the circuit substrate with convergent light and detecting reflected light from the circuit substrate; and at least one of the first substrate detection sensor and the second substrate detection sensor, Selection control means for selectively switching and using the circuit board according to the type of the circuit board to be stopped.

In the circuit board detection device of this circuit board processing machine, the selection control means for selectively switching the first board detection sensor and the second board detection sensor having different detection characteristics is optimal according to the type of the circuit board. It is possible to selectively use various board detection sensors to enable highly accurate detection for all circuit boards. As a result, for example, it is possible to reliably determine the difference between a multi-piece board having perforations and notches or a board on which components have been mounted, and to stop the circuit board with high accuracy, thereby improving the reliability of the transfer control. it can.

According to a fifth aspect of the present invention, there is provided a circuit board detection device for a circuit board processing machine, wherein the first board detection sensor and the second board detection sensor are provided above and below the circuit board of the transfer path, respectively. It is characterized in that they are arranged facing each other vertically.

In the circuit board detecting device of this circuit board processing machine, the first and second circuit boards are provided above and below the circuit board, respectively.
By arranging the board detection sensor of, the board detection sensor or both boards which are suitable for the top and bottom depending on the characteristics of these circuit boards with respect to the circuit boards having different front and back colors and densities or mounting states of electronic components. Detection can be performed using a detection sensor, and the reliability of detection accuracy can be improved.

According to a sixth aspect of the present invention, there is provided a circuit board detection device for a circuit board processing machine, wherein at least one of the first board detection sensor and the second board detection sensor is parallel to the board surface with respect to the circuit board. A sensor moving mechanism that relatively moves in various directions, and the operation of each substrate detecting sensor by the sensor moving mechanism is controlled, and detection is performed by the first and second substrate detecting sensors, and the circuit is based on the obtained detection signal. An optimum detection position setting means for setting the detection position of the board is provided, and the circuit board conveyed to the conveyance path is detected at the set detection position of the circuit board.

In the circuit board detecting device of this circuit board processing machine, when the circuit board is carried into each stop position of the conveying path, the sensor moving mechanism causes at least the first board detecting sensor and the second board detecting sensor to be operated. Either one scans the circuit board surface while relatively moving in a direction parallel to the board surface of the circuit board. Each substrate detection sensor performs detection in accordance with this scanning to acquire scanning detection information, and the optimum detection position setting means sets the optimum arrangement position of each substrate detection sensor based on this scanning detection information. Then, by detecting the circuit board conveyed to the conveyance path at the set detection position of the circuit board, each board detection sensor can exert its maximum detection function at the optimum position.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a circuit board detection method and a circuit board detection apparatus for a circuit board processing machine according to the present invention will be described in detail below with reference to the drawings. Figure 1
Is a block diagram of an electronic component mounter equipped with a circuit board detection device according to the present invention, FIG. 2 is a block diagram showing a conceptual structure of the circuit board detection device, and FIG. 3 is an explanatory diagram of a board detection sensor.

As shown in FIG. 1, in the electronic component mounting machine 21 as a circuit board processing apparatus, a guide rail 27 of a circuit board 25 is provided at the center of the upper surface of a base 23, and a conveyor belt of the guide rail 27 allows The circuit board 25 is transported from the loader unit 29 on the end side to the mounting position 31 of the electronic component, and from the mounting position 31 to the unloader unit 33 on the other end side. Y-axis portions 36 are provided on both sides of the upper surface of the base 23 above the circuit board 25, and an X-axis portion 37 is suspended between the Y-axis portions 36. Further, a transfer head 39 is attached to the X-axis portion 37, which allows the transfer head 39 to move in the X- direction.
It is movable in the Y plane.

XY composed of the X-axis portion 37 and the Y-axis portion 36
The transfer head 39 mounted on the robot and freely moving on the XY plane (horizontal plane) includes a parts feeder 4 to which electronic components such as a resistance chip and a chip capacitor are supplied.
1 or a desired electronic component is sucked by a suction nozzle 45 from a parts tray 43 to which relatively large electronic components such as ICs and connectors such as SOP and QFP are supplied, and can be mounted at a predetermined position on the circuit board 25. Is configured. The mounting operation of such an electronic component is controlled by a control device (not shown) based on a preset mounting program.

The parts feeder 41 has a guide rail 27.
A large number of tape-shaped component rolls accommodating electronic components such as resistor chips and chip capacitors are attached to the respective component feeders. Further, in the parts tray 43, a total of two trays 43a each having a lengthwise direction orthogonal to the guide rail 27 can be placed, and each tray 43a slides to the guide rail 27 side according to the number of supplied components, The Y-direction component take-out position is kept constant. Electronic components such as QFP are placed on the tray 43a.

As shown in FIG. 2, the transfer path 44 of the circuit board 25 in the electronic component mounter 21 is a loader section 29.
And a table section 35 and an unloader section 33.
The loader unit 29 carries in the unmounted circuit board 25 transferred to the electronic component mounter 21 and makes the unmounted circuit board 25 stand by while the electronic components are mounted on the table unit 35. The table section 35 carries in the circuit board 25 from the loader section 29 and performs a production process of mounting electronic components on the circuit board 25. The unloader unit 33 receives the production-completed circuit board 25 from the table unit 35,
Wait until it is conveyed to the next process. These loader units 2
The circuit board 2 includes the table portion 35, the table portion 35, and the unloader portion 33.
It has a transport belt for transporting 5, and this transport belt is driven by an AC servomotor 47 or an induction motor.

That is, in the transport path 44, in the loader unit 29, the table unit 35, and the unloader unit 33, the circuit board 2
There are 5 stop positions each. In the circuit board detection device 100 according to the present embodiment, a wide light diffusion type substrate detection sensor (first substrate detection sensor) 51 and a limited reflection type substrate detection sensor (second substrate detection) are provided at respective stop positions of the transport path 44. (Sensor) 53 is provided. Here, the substrate detection sensors 51 and 53 provided on the table portion 35 will be described. Although the substrate detection sensors 51 and 53 are not shown in the loader unit 29 and the unloader unit 33, they are provided similarly to the table unit 35.

These wide light diffusion type substrate detection sensors 51
The limited reflection type substrate detection sensor 53 is connected to the selection control means 55 such as a computer. The selection control means 55 is connected to the control device 57 described above. The selection control means 55 uses the wide light diffusion type board detection sensor 5 based on the board data of the circuit board 25 registered in advance.
At least one of 1 and the limited reflection type substrate detection sensor 53 is controlled to be enabled. The selection control means 55 may be incorporated in the control device 57 by giving the control device 57 an equivalent function.

The board detection sensors 51 and 53 are used for the circuit board 2
5, an optical system having a light emitting element such as an LED for irradiating light, and a light receiving element for receiving the return light reflected by the light emitted from the light emitting element on the circuit board 25, and transmitting the light emitted from the light emitting element ( Depending on the lens), it is classified into a wide light diffusion system or a limited reflection system. The light receiving element detects the return light from the circuit board 25 and photoelectrically converts the return light to output it as a detection signal. By processing the detection signal from the light receiving element by the control device 57, the shape of the circuit board 25,
It is possible to understand the color, density, mounting status of electronic parts, etc.

Here, in the circuit board detecting device 100 according to the present embodiment, the wide light diffusion type board detecting sensor 51 and the limited reflection type board detecting sensor 53 face the back side, which is one side of the circuit board 25. The circuit boards 25 are arranged side by side in the carrying direction. This allows
When the circuit board 25 is conveyed on the conveying path of the table portion 35, the wide light diffusion type substrate detection sensor 51 and the limited reflection type substrate detection sensor 53 detect the circuit substrate 25 from the same surface side, and the respective substrates are detected. The detection sensors 51 and 53 redundantly detect one circuit board 25 with different detection characteristics. In the present embodiment, the detection accuracy is improved by using both of these pieces of detection information for determination control.

As shown in FIG. 3, the wide-light diffusion type substrate detection sensor 51 and the limited reflection type substrate detection sensor 53 have different detection characteristics. The wide light diffusion type substrate detection sensor 51 can detect a wide range by diffusing and irradiating the irradiation light. Also, for example, φ25
Notches of the circuit board up to about mm can be detected, and because of the diffused light irradiation, there is no effect even if there are local openings such as perforations and perforations formed in the circuit board. Further, it is not affected by the presence of tall components mounted on the circuit board or electronic components such as CSP (Chip Size Package) having a mirror surface. On the other hand, the limited reflection type substrate detection sensor 53 is capable of performing detection with high detection accuracy in a limited narrow range by irradiating convergent light obtained by converging irradiation light. In addition, it is possible to perform stable detection because it is unlikely to be affected by the back surface of the circuit board (effect of background brightness).

Next, the circuit board detection device 100 having the above configuration
The operation of will be described. When the circuit board 25 enters the loader unit 29, the table unit 35, or the unloader unit 33, the circuit board detection device 100 first selects the selection control unit 55.
Extracts board data for the entered circuit board 25. The board data can be received from, for example, the control device 57, but other than this, it may be directly input to the electronic component mounting device 21. When the circuit board 25 can be specified, the selection control means 55 switches to a board detection sensor suitable for the circuit board 25. This switching can be performed by at least one of the wide light diffusion type substrate detection sensor 51 and the limited reflection type substrate detection sensor 53.

Specifically, for example, when the circuit board 25 is a multi-piece board such as a split board, detection is performed using only the wide light diffusion type board detection sensor 51 or the limited reflection type board detection sensor 53. It is selectively set according to the type of the circuit board whether to perform detection using only the wide light diffusion type substrate detection sensor 51 or the limited reflection type substrate detection sensor 53. . This allows
Compared with the case where the detection is performed only by using the limited reflection type substrate detection sensor 53 in a unified manner, erroneous detection in which perforations and the like are detected as the circuit board end portion is less likely to occur.

As described above, according to the circuit board detecting apparatus 100 of the present embodiment, the board detecting sensors 51 and 53 capable of performing the optimum detection are selectively used according to the type of the circuit board 25, so that it is possible to increase the number of the circuit boards. Highly accurate detection is possible with respect to various types of circuit boards 25. For example, it is possible to reliably determine the difference between a multi-piece board having perforations, notches, etc. or a board on which components are mounted, and to cause the circuit board 25 to malfunction. Therefore, stop control can be performed with high accuracy. As a result, the reliability of the transport control on the transport path 44 can be improved.

Next, a second embodiment of the circuit board detecting device according to the present invention will be described. FIG. 4 is a configuration diagram of the circuit board detection device 200 of the present embodiment. The same members as those shown in FIGS. 1 to 3 are designated by the same reference numerals, and duplicate explanations will be omitted. The circuit board detection device 200 according to the present embodiment includes a wide light diffusion type board detection sensor 5.
1 and the limited reflection type substrate detection sensor 53,
The circuit boards 25 are arranged above and below the fourth circuit board 25 so as to face both the front surface side and the back surface side of the circuit board 25 so as to face each other. The substrate detection sensors 51 and 53 of the loader unit 29 and the unloader unit 33 are arranged in the same manner as the table unit 35, though not shown.

In the circuit board detection device 200, the wide light diffusion type board detection sensor 51 and the limited reflection type board detection sensor 53 can detect both the front surface and the back surface of the circuit board 25. The circuit board 25 often has different colors and densities on the front and back surfaces, or the mounting state of electronic components, but the characteristics of the circuit board 25 are judged from the board data, and either the front or back surface of the suitable board detection sensor 51, 53 or By performing detection using both the substrate detection sensors 51 and 53, reliability of detection accuracy is improved. Depending on the type of the circuit board 25 being transported, the circuit board 2 may be viewed from the surface.
Although it is difficult to detect the end portion of No. 5, it may be easy to detect from the back surface. At this time, if only the information from the front side is used for the determination, it may be inefficient and the accuracy of detection may not be obtained, but by using the information from the back side, reliable detection is possible. .

As described above, in this embodiment, by using the substrate detection sensors 51, 53 on both the front and back sides of the circuit board 25, for example, the substrate detection sensors 51, 5 on both the front and back sides are used.
When both the determinations in 3 are “circuit board detected”, AND control is performed to stop the conveyance of the circuit board 25, so that more accurate detection can be performed. When the circuit board 25 is difficult to detect the end portion, the conveyance is stopped when "the circuit board is detected" from at least one of the two.
It may be R control. Thereby, the reliability of detection accuracy can be improved.

Next, a third embodiment of the circuit board detecting device according to the present invention will be described. FIG. 5 is a configuration diagram of the circuit board detection device 300 of the present embodiment. The same members as those shown in FIGS. 1 to 3 are designated by the same reference numerals, and duplicate explanations will be omitted.

The circuit board detecting device 300 according to the present embodiment.
Includes a wide light diffusion type substrate detection sensor 51 and a limited reflection type substrate detection sensor 53, which are arranged in an XY parallel to the circuit board 25.
It has a sensor moving mechanism 60 that can move in any direction. This sensor moving mechanism can be composed of 60, a rack and pinion mechanism, a ball screw mechanism, a pneumatic / hydraulic drive mechanism, and the like. In addition, the wide light diffusion type substrate detection sensor 51 and the limited reflection type substrate detection sensor 53 are
Similar to the embodiment described above, it is preferable that the circuit board 25 is disposed so as to face both the front surface side and the back surface side.

The sensor moving mechanism 60 for moving the wide-light-diffusion type substrate detection sensor 51 and the limited reflection type substrate detection sensor 53 is controlled by the optimum detection position setting means 62. That is, the board detection sensors 51 and 53 are connected to the circuit board 2
By moving the circuit board 25 relative to 5, the entire front and back surfaces of the circuit board 25 are scanned to detect various information such as the shape, color and density, and electronic component mounting status. The optimum detection position setting means 62 finds the optimum detection position at which the detection can be performed most reliably based on the detected information, and each substrate detection sensor 5
The movement control of 1 and 53 is performed to the optimum detection position where this detection can be performed most reliably.

More specifically, for example, the table portion 3
The circuit board 25 carried in 5 is positioned at the electronic component mounting position by a board stopper (not shown). Next, the sensor moving mechanism 60 is operated by a command from the optimum detection position setting means 62 to move the substrate detection sensors 51 and 53 in the Y direction (direction perpendicular to the paper surface of FIG. 5) within a preset range, and The substrate detection sensors 51 and 53 are moved in the X direction which is the transport direction. By repeating this operation, the board detection sensors 51 and 53 are scanned on the circuit board 25 in the XY directions. At this time, a current value which is a detection signal output from the substrate detection sensors 51 and 53 is output to the optimum detection position setting means 62. This operation is continuously performed in a predetermined range of the circuit board 25, particularly in the end portion of the circuit board 25. From the current detection waveform obtained as a result, the optimum detection position setting means 6
2 has a large signal strength gap at the edge boundary of the circuit board 25, and obtains an optimum detection position where stable detection is possible. The substrate detection sensors 51 and 53 are moved to the optimum detection position thus obtained and stopped.

As described above, in the circuit board detection device 300 according to the present embodiment, at least one of the wide light diffusion type board detection sensor 51 and the limited reflection type board detection sensor 53 is arranged in parallel with the circuit board 25. The circuit board 25 is scanned while moving in the direction. Then, based on the current detection waveform of the circuit board 25 obtained by this scanning, at least one of the wide light diffusion type substrate detection sensor 51 and the limited reflection type substrate detection sensor 53 is automatically moved to the optimum detection position. Let

As a result, the wide-light-diffusion type substrate detection sensor 51 and the limited reflection type substrate detection sensor 53 can be used at positions that are optimal for detection, and the high detection characteristics of each can be maximized. It enables accurate detection.

The circuit detection device and the circuit detection method of the present invention have been described above based on an example applied to the electronic component mounter 21. However, the present invention is not limited to this, and the circuit board is placed at a predetermined position. The present invention can be applied in the same manner as long as it is a circuit board processing machine having a transfer path having a function of transferring and stopping. For example, a cream solder printing device for printing cream solder on a circuit board, a cream solder printing inspection device for inspecting the printing state of the cream solder printed on the circuit board, and an adhesive for bonding electronic components at a predetermined position on the circuit board. The present invention can be suitably applied to any device such as an adhesive applying device for applying.

[0043]

As described in detail above, according to the circuit board detecting method for the circuit board processing machine of the present invention, the first board detecting sensor and the second board detecting sensor have different detection characteristics. Since various types of board detection sensors are used and at least one of these board detection sensors is switched and used based on the information of the circuit board to be stopped, optimum detection can be performed for each of various circuit boards. It is possible to highly accurately discriminate a multi-cavity board having perforations or notches or a board on which components are mounted, and to enhance the reliability of transport control. As a result, it is possible to prevent non-conveyance and double feeding and improve the productivity in the electronic component mounting machine.

According to the circuit board detecting device of the circuit board processing machine of the present invention, one of the first board detecting sensor and the second board detecting sensor, and one of these board detecting sensors depending on the type of the circuit board. Alternatively, since the selection control means for switching both of them to usable is provided, it is possible to detect the circuit board by using the optimum board detection sensor for each circuit board carried into each stop position of the transport path. As a result, erroneous detection due to differences in the shape, color and density of the circuit board, and mounting states of electronic components can be prevented, and the transport path can be controlled with high accuracy.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an electronic component mounter equipped with a circuit board detection device according to the present invention.

FIG. 2 is a configuration diagram showing a conceptual configuration of a circuit board detection device.

FIG. 3 is an explanatory diagram of a substrate detection sensor.

FIG. 4 is a configuration diagram of a second embodiment of a circuit board detection device according to the present invention.

FIG. 5 is a configuration diagram of a third embodiment of the circuit board detection device according to the present invention.

FIG. 6 is a configuration diagram of a circuit board detection device in a conventional electronic component mounting machine.

[Explanation of symbols]

21 Electronic Component Mounting Machine (Circuit Board Processing Machine) 25 Circuit Board 44 Conveying Path 51 Wide Light Diffusion Type Substrate Detection Sensor (First Substrate Detection Sensor) 53 Limited Reflection Type Substrate Detection Sensor (Second Substrate Detection Sensor) 55 Selection control means 60 Sensor moving mechanism 62 Optimal detection position setting means 100, 200, 300 Circuit board detection device

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Takeshi Kuribayashi             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F term (reference) 5E313 AA02 AA03 AA11 AA15 AA23                       CC03 CC04 DD02 DD03 DD05                       DD12 EE24 EE35 FF11 FF33                       FG02

Claims (6)

[Claims] 1. A circuit for detecting a circuit board during conveyance of the circuit board and stopping it at the predetermined position when the circuit board is conveyed to a predetermined position and stopped on a conveyance path in the circuit board processing machine. A circuit board detection method for a board processing machine, comprising: a first board detection sensor for irradiating a circuit board with diffused light and detecting reflected light from the circuit board; and a circuit board for irradiating converged light with the circuit board. A second substrate detection sensor that detects reflected light from the substrate is disposed in the transport path, and at least one of the first substrate detection sensor and the second substrate detection sensor is stopped. A method for detecting a circuit board of a circuit board processing machine, which is selectively switched according to the type of the circuit board to be used. 2. A substrate above the transport path, wherein the first substrate detection sensor and the second substrate detection sensor are vertically opposed to each other above and below the circuit board of the transport path, respectively. 2. The circuit board detection method for a circuit board processing machine according to claim 1, wherein the detection of the circuit board is performed by comparing the detection signal from the detection sensor with the detection signal from the board detection sensor below the conveyance path. 3. Prior to the detection of the circuit board, the first
At least one of the second board detection sensor and the second board detection sensor is moved relative to the circuit board in a direction parallel to the board surface while the reflected light is detected by each board detection sensor, and the movement is performed. The circuit board detection of the circuit board processing machine according to claim 1, wherein the detection position of the circuit board is determined based on the detection information obtained by, and each board detection sensor is moved to the detection position. Method. 4. A circuit board processing machine having a carrying path for carrying a circuit board to a predetermined position and stopping the circuit board, the circuit board detecting the circuit board during the carrying of the circuit board and stopping the circuit board at the predetermined position. A circuit board detection device for a processing machine, comprising: a first board detection sensor for irradiating a circuit board with diffused light and detecting reflected light from the circuit board; and a circuit board for irradiating converged light with the circuit board. A second substrate detection sensor for detecting reflected light from the substrate, and at least one of the first substrate detection sensor and the second substrate detection sensor are selected according to the type of the circuit board to be stopped. A circuit board detection device for a circuit board processing machine, comprising: a selection control unit that is selectively switched for use. 5. The first board detection sensor and the second board detection sensor are arranged above and below the circuit board of the transfer path so as to face each other in the vertical direction. 4. The circuit board detection device of the circuit board processing machine according to 4. 6. A sensor moving mechanism for relatively moving at least one of the first substrate detecting sensor and the second substrate detecting sensor relative to the circuit board in a direction parallel to a board surface, and the sensor moving mechanism. An optimum detection position setting means for controlling the operation of each board detection sensor by the mechanism, performing the detection by the first and second board detection sensors, and setting the detection position of the circuit board based on the obtained detection signal. The circuit board detection device for a circuit board processing machine according to claim 4 or 5, further comprising: detecting the circuit board conveyed to the conveyance path at the set detection position of the circuit board. .