JP6912626B2 - Feeder automatic replacement method - Google Patents

Description

The present invention relates to an automatic feeder replacement method in which feeders are automatically set and removed from the feeder set portions of a plurality of component mounting machines arranged along the transport direction of a circuit board.

As described in Patent Document 1 (International Publication WO2014 / 010083), this type of component mounting line is a moving lane provided along an array of a plurality of component mounting machines constituting the component mounting line. An automatic replacement device (loader) is movably installed in the vehicle, and this automatic replacement device is moved to the front of the component mounting machine specified by the production job (production program), etc., to the feeder set section of the component mounting machine. I try to set and remove the feeder. In this case, the drive device for moving the automatic replacement device fixes the rack on the front side of the component mounting machine so as to extend along the movement lane, and the automatic replacement device includes a pinion that meshes with the rack and this pinion. A motor that drives the rotation is provided, and by rotating the pinion with this motor, the automatic switching device is moved along the moving lane, and the rotation angle of the motor (rotation angle of the pinion) is detected by an encoder or the like. , The movement distance of the automatic switching device is measured based on the detected value, the position of the automatic switching device is detected, and the movement of the automatic switching device is controlled.

International Publication WO2014 / 010083

In Patent Document 1 above, the automatic replacement device is moved by the meshing of the teeth between the rack and the pinion, but the teeth meshing between the rack and the pinion due to manufacturing variations, assembly variations, tooth wear, etc. of these components. There are drawbacks such as poor condition, teeth interfering with each other, hindering smooth rotation, loud noise, and teeth being damaged.

As a solution to this drawback, the present inventor considers adopting a configuration in which the automatic switching device is moved by a drive wheel that is rotationally driven by a motor instead of the rack and the pinion. Since it may slip, even if the rotation angle of the motor or the rotation angle of the drive wheels is accurately detected, an error due to the slip of the drive wheels occurs between the detected value and the moving distance of the automatic switching device. The position of the automatic switching device cannot be detected accurately.

As a countermeasure, it is conceivable to provide a distance sensor or a linear scale for measuring the moving distance (position) of the automatic switching device, but there are the following problems.
Currently, commercially available wire-type distance sensors have low durability, and measurement accuracy cannot be stably ensured. Further, the laser distance sensor is expensive, the measurement operation is easily affected by the atmospheric condition and is unstable, and there is a concern about the risk of blocking the laser beam and the influence on the eyes of the operator. In addition, the linear scale has a large sensor head and is expensive, and it is necessary to replace the scale or add the scale every time the number of component mounting machines installed (line length) is increased or decreased, which is troublesome. At the same time, the seam of the scale is a factor that lowers the measurement accuracy.

Therefore, the problem to be solved by the present invention is that the position of the automatic switching device can be detected stably and accurately with an inexpensive configuration, and it is possible to cope with an increase or decrease in the number of component mounting machines installed by a simple operation. That is.

In order to solve the above problems, the present invention sets and removes a feeder from the feeder set portion of each component mounting machine of the component mounting line in which a plurality of component mounting machines are arranged along the transport direction of the circuit board. When moving the automatic switching device, the position of the automatic switching device is detected by the position detecting device, and the automatic switching device is moved to the instructed position based on the detection position of the position detecting device to set the feeder. In the feeder automatic replacement method for performing the removal and removal, a reference position is set for each of two or more component mounting machines among the plurality of component mounting machines, and the position of the automatic replacement device is the component mounting machine. The reference position detection process that outputs a reference position detection signal when it matches the reference position of the above, and the detection position of the position detection device when the reference position detection signal is output are made to correspond to the reference position of the component mounting machine. It is characterized in that it includes a correction process for correcting as described above, and further has a feature described later.

By the way, when the position detection device detects the position of the automatic switching device, it is necessary to set a reference position at at least one place, measure the moving distance of the automatic switching device from the reference position, and use the measured value as a reference. The position of the automatic switching device is detected with reference to the position, and the movement of the automatic switching device is controlled. In this case, if each of the plurality of component mounting machines constituting the component mounting line is installed accurately without misalignment, even if there is only one reference position, the moving distance (position) of the automatic replacement device from the reference position. There is no difference in the correspondence between the position and the position of each of the multiple component mounting machines, but in reality, each of the multiple component mounting machines may be installed with a slight misalignment. , There is a possibility that there is a deviation in the correspondence between the moving distance (position) of the automatic switching device from the reference position and the respective positions of the plurality of component mounting machines. If this correspondence is not correct, the position of the automatic switching device cannot be accurately controlled for each of the multiple component mounting machines, and there is a possibility that a feeder setting error or removal error for each component mounting machine may occur. be.

As a countermeasure, according to the present invention, when a reference position is set for each of two or more component mounting machines among a plurality of component mounting machines and the position of the automatic switching device matches the reference position of the component mounting machine. A reference position detection process for outputting a reference position detection signal and a correction process for correcting the detection position of the automatic switching device so as to correspond to the reference position of the component mounting machine when the reference position detection signal is output. I tried to do it. In this way, the moving distance (position) of the automatic replacement device can be detected with reference to the reference position of two or more component mounting machines among the plurality of component mounting machines, so that the automatic replacement device from the reference position can be detected. It is possible to reduce or eliminate the deviation of the correspondence between the moving distance (position) of the device and the position of each of the multiple component mounting machines, and the position of the automatic switching device is accurate for each of the multiple component mounting machines. It becomes possible to control well, and it is possible to prevent mistakes in setting and removing the feeder for each component mounting machine.

In this case, the detection position and parts of the position detection device when the automatic replacement device is moved during the installation of the component mounting machine or during the calibration operation before the start of production and the position of the automatic replacement device matches the reference position of the component mounting machine. The correspondence with the reference position of the mounting machine is stored in the storage means, and the detection position of the automatic switching device is interpolated and corrected between the reference positions of the component mounting machine based on the storage data of the storage means during production. You can do it. In this way, the accuracy of detecting the position of the automatic switching device between the reference positions of the component mounting machine can be improved.

By the way, in the reference position detection process (initial process) at the start of production, the automatic replacement device is moved to the reference position of the component mounting machine, and the detection position of the automatic replacement device is corrected so as to correspond to the reference position of the component mounting machine. It is necessary, but if the stop position of the automatic replacement device before the start of production is far from the reference position of the component mounting machine, it takes time to detect the reference position at the start of production, and the start of production is delayed by that amount. become.

Therefore, when setting the reference position for two or more component mounting machines, the automatic replacement device is moved to the reference position of the nearest component mounting machine in the reference position detection process at the start of production, and the detection position of the automatic replacement device is set. It is advisable to correct it so that it corresponds to the reference position of the component mounting machine. In this way, the distance until the automatic replacement device is moved to the reference position of the component mounting machine in the reference position detection process at the start of production can be shortened, and the time for the reference position detection process at the start of production can be shortened. Can be shortened.

Here, the reference position detecting means for outputting the reference position detection signal when the position of the automatic replacement device matches the reference position of the component mounting machine may be provided in the automatic replacement device or in the component mounting machine. good.

When the reference position detecting means is provided in the automatic replacement device, when the position of the automatic replacement device matches the reference position of the component mounting machine in each of two or more component mounting machines among the plurality of component mounting machines. A reference unit that is detected by the reference position detecting means of the automatic switching device may be provided.

On the other hand, when the reference position detecting means is provided in each of two or more component mounting machines among the plurality of component mounting machines, the position of the automatic replacement device coincides with the reference position of the component mounting machine in the automatic replacement device. When this happens, a reference unit that is detected by the reference position detecting means of the component mounting machine may be provided.

FIG. 1 is a perspective view showing the configuration of the entire component mounting line according to the embodiment of the present invention. FIG. 2 is a perspective view schematically showing the configurations of the automatic switching device and the component mounting machine. FIG. 3 is a block diagram schematically showing the configuration of the control system of the component mounting line with the automatic switching device. FIG. 4 is a perspective view showing a cassette type feeder. FIG. 5 is a perspective view showing a configuration of a driving device for moving the automatic switching device and a peripheral portion thereof. FIG. 6 is a perspective view showing a configuration of a position detecting device that detects the position of the automatic switching device.

Hereinafter, an embodiment embodying a mode for carrying out the present invention will be described.
First, the configuration of the component mounting line 10 will be described with reference to FIGS. 1 to 3.

The component mounting line 10 is configured by arranging a plurality of component mounting machines 12 along the transport direction (X direction) of the circuit board 11, and solders to the circuit board 11 on the board carry-in side of the component mounting line 10. A solder printing machine (not shown) for printing the above, a feeder storage device 19 for storing the cassette type feeder 14, and the like are installed.

As shown in FIG. 2, each component mounting machine 12 has two conveyors 13 that convey the circuit board 11 and a suction nozzle that sucks the components supplied from the cassette type feeder 14 and mounts them on the circuit board 11. A mounting head 15 for holding (not shown), a head moving device 16 for moving the mounting head 15 in the XY directions (left-right and front-back directions), and a component imaging device for capturing images of components sucked on the suction nozzle from the lower surface side thereof. A camera 17 (see FIG. 3) and the like are provided. A mark imaging camera 18 (see FIG. 3) that captures a reference mark (not shown) of the circuit board 11 is attached to the head moving device 16 so as to move integrally with the mounting head 15 in the XY directions. ..

In addition, as shown in FIG. 3, the control device 20 of the component mounting machine 12 includes an input device 21 such as a keyboard, a mouse, and a touch panel, and a hard disk, RAM, ROM, etc. for storing various control programs and various data. The storage device 22 (storage means) of the above is connected to a liquid crystal display, a display device 23 such as a CRT, and the like. The control device 20 of each component mounting machine 12 is connected to a production control computer 70 that manages the production of the entire component mounting line 10 via a network, and the production control computer 70 manages the production of the component mounting line 10.

Each component mounting machine 12 of the component mounting line 10 conveys the circuit board 11 conveyed from the component mounting machine 12 on the upstream side to a predetermined position by the conveyor 13, and uses a clamping mechanism (not shown) to transfer the circuit board 11 to a predetermined position. It is clamped and positioned, the reference mark of the circuit board 11 is imaged by the mark imaging camera 18, the position of the reference mark (reference position of the circuit board 11) is recognized, and the reference mark is supplied from the cassette type feeder 14. The component to be mounted is sucked by the suction nozzle of the mounting head 15, moved from the suction position to the imaging position, and the component is imaged from the lower surface side by the component imaging camera 17, and the suction position shift amount of the component is obtained. After determining the above, the suction position deviation amount is corrected, and the component is mounted on the circuit board 11 on the conveyor 13 to produce a component mounting board.

Next, the configuration of the cassette type feeder 14 will be described with reference to FIG.
The cassette case 32 of the cassette type feeder 14 is formed of a transparent or opaque plastic plate, a metal plate, or the like, and its side surface portion (cover) can be opened and closed. Inside the cassette case 32, a tape loading section 35 is provided for removably (replaceably) loading the tape reel 34 around which the component supply tape 33 is wound. A reel holding shaft 36 that rotatably holds the tape reel 34 is provided at the center of the tape loading portion 35.

Inside the cassette case 32, a tape feeding mechanism 38 that sends the component supply tape 33 pulled out from the tape reel 34 to the component suction position, and a top film 40 (also called a cover tape) from the component supply tape 33 in front of the component suction position. A top film peeling mechanism 39 is provided for peeling to expose the parts in the part supply tape 33.

The tape feed mechanism 38 is composed of a sprocket 42 provided near the lower part of the component suction position, a motor 43 for rotationally driving the sprocket 42, and the like, and is formed on one side edge of the component supply tape 33 at a predetermined pitch. By engaging the teeth of the sprocket 42 with the tape feed hole and rotating the sprocket 42, the component supply tape 33 is pitch-fed to the component suction position.

The top film peeling mechanism 39 holds the component supply tape 33 in front of the component suction position to peel the top film 40 from the upper surface of the component supply tape 33, and the top film peeled by the tape presser 45. A top film feed gear mechanism 47 that pulls 40 in the direction opposite to the tape feed direction and feeds it into the top film recovery unit 46 provided on the upper part of the cassette case 32, a motor 48 that drives the top film feed gear mechanism 47, and the like. It is composed of.

At the edge of the cassette case 32 on the tape feed direction side, a waste tape 33a (only the carrier tape from which the top film 40 has been peeled off in this embodiment) from which the parts have been taken out after passing through the component suction position is placed below. The waste tape discharge passage 50 for guiding and discharging the waste tape is provided so as to extend downward, and the outlet 50a of the waste tape discharge passage 50 is provided at a position below the center of the end surface of the cassette case 32 on the tape feed direction side. ing.

Inside the cassette case 32, a control device 52 for controlling the motor 43 of the tape feeding mechanism 38 and the motor 48 of the top film peeling mechanism 39 is provided. In addition, although not shown, the cassette case 32 is provided with a communication / power supply connector connected to a communication / power supply connector on the component mounting machine 12 side.

As shown in FIG. 1, on the front side of the component mounting line 10, an automatic replacement device 26 for setting and removing the cassette type feeder 14 on the feeder setting unit 24 of each component mounting machine 12 is installed. Below the feeder set portion 24 of each component mounting machine 12, a stock portion 71 for accommodating a plurality of feeders 14 to be set in the feeder set portion 24 is provided. The automatic switching device 26 takes out the feeder 14 to be replaced from the feeder set unit 24 of the plurality of component mounting machines 12 and collects it in the stock unit 71, and also collects the feeder 14 designated by the production job (production program) from the stock unit 71. Is taken out and set in the feeder set unit 24 of the plurality of component mounting machines 12.

On the front side of the component mounting line 10, a guide rail 74 for moving the automatic switching device 26 in the left-right direction (X direction) along the arrangement of the component mounting machines 12 is provided so as to extend in the X direction over the entire component mounting line 10. Has been done. The board carry-in side of the guide rail 74 is extended to the feeder storage device 19, the automatic switching device 26 is moved to the front side of the feeder storage device 19, and the automatic switching device 26 is designated by the feeder storage device 19 in the production job. The feeder 14 is taken out, and the used feeder 14 is returned to the feeder storage device 19.

As shown in FIG. 5, on the back side of the automatic switching device 26, a plurality of guide rollers 54 for regulating the Y direction, which regulate the movement of the automatic switching device 26 in the Y direction (direction orthogonal to the X direction), and automatic A plurality of guide rollers 55 for Z direction regulation that regulate the movement of the switching device 26 in the Z direction (vertical direction) are rotatably provided alternately, and guide rollers 54 for Y direction regulation are provided on the side wall of the guide rail 74. The guide roller 55 for regulating the Z direction rolls along the plane of the guide rail 74, so that the moving direction of the automatic switching device 26 is guided only in the X direction.

The space on the front side of the component mounting line 10 is a moving lane in which the automatic switching device 26 moves in the X direction, and the moving rail 75 extends in the X direction on the guide rail 74 on the front side of the component mounting line 10. It is provided as follows. On the other hand, the automatic switching device 26 is provided with a drive device 78 for rotationally driving a drive wheel 76 made of an elastic material such as rubber by a motor (not shown) via a belt transmission mechanism 77. By rolling the wheel 76 along the moving rail 75, the automatic switching device 26 is driven in the X direction.

Next, the configuration of the position detecting device 81 that detects the position of the automatic switching device 26 will be described with reference to FIGS. 5 and 6.
An endd timing belt 82 made of an elastic material such as rubber is provided so as to extend linearly in the X direction along the guide rail 74. The length of the timing belt 82 is equal to or longer than the number of installed component mounting machines 12 (the length of the component mounting line 10), preferably at least one longer than the length of the number of installed component mounting machines 12. It is formed long. In this case, it is not necessary to cut the extra portion of the timing belt 82 according to the number of component mounting machines 12 installed, and the extra portion of the timing belt 82 is attached to or bundled with the back surface of the guide rail 74 or the like. The extra part of the timing belt 82 may not be in the way.

On the other hand, the automatic switching device 26 is provided with a timing pulley 83 that moves together with the automatic switching device 26 while maintaining the state of meshing with the teeth of the timing belt 82. The support mechanism 84 that supports the timing pulley 83 rotates the timing pulley 83 in a direction orthogonal to the timing belt 82 within a range in which the teeth of the timing pulley 83 and the teeth of the timing belt 82 do not disengage (vertical direction in this embodiment). A urging means 85 (for example, a spring such as a spring, an elastic member such as rubber) is provided to urge the timing pulley 83 in a direction of pressing the timing pulley 83 against the timing belt 82.

Further, the automatic switching device 26 is provided with a magnetic or optical rotary encoder 87 as a rotation angle sensor for detecting the rotation angle of the timing pulley 83. The rotary encoder 87 is a rotary encoder capable of detecting forward / reverse rotation that outputs a pulse each time the timing pulley 83 rotates by a predetermined angle, and the output pulse of the rotary encoder 87 is the control device 90 of the automatic switching device 26 (FIG. 3). See).

The control device 90 of the automatic switching device 26 also functions as a detection circuit unit that detects the position of the automatic switching device 26 based on the output pulse of the rotary encoder 87 (hereinafter referred to as “encoder pulse”), and the automatic switching device 26 During movement (during rotation of the timing pulley 83), the encoder pulse is counted, and the up / down of the counting operation is switched according to the rotation direction of the timing pulley 83 (movement direction of the automatic switching device 26). The position of the automatic switching device 26 is detected based on the count value of the encoder pulse while maintaining the correspondence between the count value of the above and the position of the automatic switching device 26. At this time, the encoder pulse counting operation may be performed by an up / down counter configured by an electronic circuit (hardware), or the function of the up / down counter may be realized by software installed in the control device 90.

In this embodiment, the support mechanism 84 that supports the timing pulley 83 makes the timing pulley 83 orthogonal to the timing belt 82 (Z direction) within a range in which the teeth of the timing pulley 83 and the teeth of the timing belt 82 do not disengage. ), And an urging means 85 for urging the timing pulley 83 in the direction of pressing the timing belt 82 against the timing belt 82 is provided. Even if there is a slight step between the component mounting machines 12 due to the deviation and the timing belt 82 has a slight step, the timing pulley 83 is made to follow the step and displaced to stabilize the meshing with the timing belt 82. The position detection accuracy of the automatic switching device 26 can be stably maintained even with respect to a step between the component mounting machines 12.

By the way, when the position detecting device 81 detects the position of the automatic switching device 26, it is necessary to set a reference position at at least one place, and the moving distance of the automatic switching device 26 from the reference position is measured by the count value of the encoder pulse. The movement of the automatic switching device 26 is controlled by measuring from the rotation amount (rotation angle) of the timing pulley 83 detected in 1 and detecting the position of the automatic switching device 26 with reference to the reference position from the measured value. .. In this case, if each of the plurality of component mounting machines 12 constituting the component mounting line 10 is installed accurately without misalignment, the moving distance of the automatic switching device 26 from the reference position even if there is only one reference position. There is no discrepancy between the (position) and the respective positions of the plurality of component mounting machines 12, but in reality, each of the plurality of component mounting machines 12 is installed with a slight misalignment. Since there is a possibility, there is a possibility that the correspondence relationship between the moving distance (position) of the automatic switching device 12 from the reference position and each position of the plurality of component mounting machines 12 is deviated. If this correspondence relationship is deviated, the position of the automatic switching device 26 cannot be accurately controlled for each of the plurality of component mounting machines 12, and a setting error or a removal error of the feeder 14 for each component mounting machine 12 occurs. there's a possibility that.

As a countermeasure, in this embodiment, a reference position is set for each of two or more (all units in this embodiment) of the plurality of component mounting machines 12 constituting the component mounting line 10. At the same time, a reference position detection sensor 91 (reference position detecting means) that outputs a reference position detection signal when the position of the automatic exchange device 26 matches the reference position of the component mounting machine 12 is provided to control the automatic exchange device 26. When the reference position detection signal is output from the reference position detection sensor 91, the device 90 corrects the detection position (encoder pulse count value) of the position detection device 81 so as to correspond to the reference position of the component mounting machine 12. .. In this way, the moving distance (position) of the automatic switching device 26 can be detected with reference to the reference position of two or more component mounting machines 12 among the plurality of component mounting machines 12, so that the moving distance (position) from the reference position can be detected. It is possible to reduce or eliminate the deviation of the correspondence between the moving distance (position) of the automatic switching device 26 and each position of the plurality of component mounting machines 26, and automatically for each of the plurality of component mounting machines 12. The position of the switching device 26 can be controlled with high accuracy, and it is possible to prevent mistakes in setting or removing the feeder for each component mounting machine 12.

In this case, when the automatic replacement device 26 is moved by the drive device 78 during the installation of the component mounting machine 12 or the calibration operation before the start of production, and the position of the automatic replacement device 26 matches the reference position of the component mounting machine 12. Correspondence between the detection position of the automatic switching device 26 (count value of the encoder pulse) and the reference position of the component mounting machine 12 is set. The control device 90 of the automatic switching device 26 stores the detection position (encoder pulse count value) of the position detection device 81 based on the storage data of the storage means 92 during production. Interpolation correction is performed between the 12 reference positions by linear interpolation or the like. In this way, the accuracy of detecting the position of the automatic switching device 26 between the reference positions of the component mounting machine 12 can be improved.

By the way, in the reference position detection process (initial process) at the start of production, the automatic replacement device 26 is moved to the reference position of the component mounting machine 12, and the detection position (encoder pulse count value) of the position detection device 81 is set to the component mounting machine. It is necessary to correct it so that it corresponds to the reference position of 12, but if the stop position of the automatic switching device 26 before the start of production is far from the reference position of the component mounting machine 12, the reference position detection process at the start of production It takes time, and the start of production will be delayed accordingly.

Therefore, in this embodiment, the control device 90 of the automatic switching device 26 moves the automatic switching device 26 to the reference position of the nearest component mounting machine 12 by the drive device 78 in the reference position detection process at the start of production to detect the position. The detection position (count value of the encoder pulse) of the device 81 is corrected so as to correspond to the reference position of the component mounting machine. In this way, the distance until the automatic replacement device 26 is moved to the reference position of the component mounting machine 12 in the reference position detection process at the start of production can be shortened, and the reference position detection process at the start of production can be performed. You can save time.

Here, as the reference position detection sensor 91, for example, a non-contact type sensor such as an optical sensor or a proximity sensor may be used, or a contact type switch such as a limit switch may be used. Further, the reference position detection sensor 91 may be provided in the automatic switching device 26 or in the component mounting machine 12.

For example, when the reference position detection sensor 91 is provided in the automatic exchange device 26, it is automatically exchanged for each of two or more (all units in this embodiment) of the component mounting machines 26 among the plurality of component mounting machines 26. A reference unit (not shown) that is detected by the reference position detection sensor 91 of the automatic switching device 26 when the position of the device 26 matches the reference position of the component mounting machine 12 may be provided.

On the other hand, when the reference position detection sensor 91 is provided in each of two or more component mounting machines 12 out of the plurality of component mounting machines 12, the position of the automatic replacement device 26 is mounted on the automatic switching device 26. A reference unit (not shown) that is detected by the reference position detection sensor 91 of the component mounting machine 12 when it matches the reference position of the machine 12 may be provided.

As shown in FIG. 3, the control device 90 of the automatic switching device 26 is connected to the production management computer 70 of the component mounting line 10 via a network, and information on the production job transmitted from the production management computer 70 of the component mounting line 10. According to this, while the position detection device 81 detects the position of the automatic replacement device 26, the drive device 78 moves the automatic replacement device 26 to the position of the component mounting machine 12 specified in the production job, and causes the component mounting machine 12 to move. It controls the operation of setting and removing the feeder 14 in the feeder setting unit 24.

In the present embodiment described above, a configuration in which the automatic switching device 26 is moved by the drive wheels 76 is adopted, and a plurality of component mounting machines 12 are used while realizing smooth movement, noise reduction, durability improvement, and the like. By detecting the rotation angle of the timing pulley 83 that meshes with the timing belt 82 provided straddling the rotary encoder 87, the rotation angle of the drive wheel 76 caused by the slip of the drive wheel 76 and the moving distance of the automatic switching device 26 are determined. The error between them can be canceled and the position of the automatic switching device 26 can be detected with high accuracy. Moreover, since the timing belt 82, the timing pulley 83, and the rotary encoder 87 constituting the position detection device 81 can use mass-produced products that are commercially available at low cost, the position detection device 81 can be inexpensively and compactly configured and has durability. Further, since it is only necessary to attach one timing belt 82 across a plurality of component mounting machines 12 when installing the component mounting machine 12, the amount of work of the operator can be reduced. In addition, the length of the timing belt may be longer than the number of installed component mounting machines, and it is not necessary to cut an extra part of the timing belt 82 according to the number of installed component mounting machines 12. It is possible to attach the extra part of the timing belt 82 to a place that does not get in the way, bundle it, and so on, and it is possible to deal with an increase or decrease in the number of component mounting machines 12 installed (line length) with a simple operation.

In the above embodiment, the rotary encoder 87 is used as the rotation angle sensor for detecting the rotation angle of the timing pulley 83, but another rotation angle sensor such as a resolver may be used.

In addition, the present invention is not limited to the above embodiment, and the configuration of the component mounting machine 12 and the configuration of the automatic switching device 26 may be appropriately changed, the configuration of the feeder 14 may be appropriately changed, and the like, and the present invention does not deviate from the gist. Needless to say, it can be implemented with various changes within the range.

10 ... component mounting line, 11 ... circuit board, 12 ... component mounting machine, 13 ... conveyor, 14 ... cassette type feeder, 15 ... mounting head, 16 ... head moving device, 20 ... component mounting machine control device, 26 ... Automatic switching device, 54 ... Y direction regulation guide roller, 55 ... Z direction regulation guide roller, 70 ... Production control computer, 71 ... Stock section, 74 ... Guide rail, 75 ... Moving rail, 76 ... Drive wheel , 77 ... belt transmission mechanism, 78 ... drive device, 81 ... position detection device, 82 ... timing belt, 83 ... timing pulley, 84 ... support mechanism, 85 ... urging means, 87 ... rotary encoder (rotation angle sensor), 90 ... Control device (detection circuit unit) of automatic switching device, 91 ... Reference position detection sensor (reference position detection means), 92 ... Storage means

Claims (5)

The automatic replacement is performed when the automatic replacement device for setting and removing the feeder to the feeder set portion of each component mounting machine of the component mounting line in which a plurality of component mounting machines are arranged along the transport direction of the circuit board is moved. A feeder automatic replacement method in which the position of the device is detected by the position detection device, the automatic replacement device is moved to an instructed position based on the detection position of the position detection device, and the feeder is set and removed.
The reference position is set in each of a plurality of parts parts mounting machine,
A reference position detection process that outputs a reference position detection signal when the position of the automatic switching device matches the reference position of each component mounting machine, and
An automatic feeder replacement method including a correction process for correcting the detection position of the position detection device so as to correspond to the reference position of each component mounting machine when the reference position detection signal is output. The automatic replacement is performed when the automatic replacement device for setting and removing the feeder to the feeder set portion of each component mounting machine of the component mounting line in which a plurality of component mounting machines are arranged along the transport direction of the circuit board is moved. A feeder automatic replacement method in which the position of a device is detected by a position detection device, the automatic replacement device is moved to an instructed position based on the detection position of the position detection device, and the feeder is set and removed.
A reference position is set for each of two or more component mounting machines among the plurality of component mounting machines.
A reference position detection process that outputs a reference position detection signal when the position of the automatic switching device matches the reference position of the component mounting machine, and
A correction process for correcting the detection position of the position detection device so as to correspond to the reference position of the component mounting machine when the reference position detection signal is output.
Including
The detection position of the position detection device when the automatic replacement device is moved during the installation of the component mounting machine or the calibration operation before the start of production and the position of the automatic replacement device matches the reference position of the component mounting machine. The correspondence relationship between the component mounting machine and the reference position of the component mounting machine is stored in the storage means, and the detection position of the position detecting device is set between the reference positions of the component mounting machine based on the stored data of the storage means during production. full Ida automatic exchange how to and interpolating correction. In the reference position detection process at the start of production, the automatic replacement device is moved to the reference position of the nearest component mounting machine, and the detection position of the position detection device is corrected so as to correspond to the reference position of the component mounting machine. The feeder automatic replacement method according to claim 2, wherein the feeder is automatically replaced. The automatic switching device is provided with a reference position detecting means for outputting the reference position detection signal, and each of two or more component mounting machines among the plurality of component mounting machines is provided with the automatic switching device. The feeder automatic replacement method according to claim 2 or 3 , wherein a reference portion is provided which is detected by the reference position detecting means of the automatic replacement device when the position matches the reference position of the component mounting machine. Each of the two or more component mounting machines among the plurality of component mounting machines is provided with a reference position detecting means for outputting the reference position detection signal, and the automatic switching device is provided with the automatic replacement device. The feeder automatic replacement method according to claim 2 or 3 , wherein a reference portion is provided which is detected by the reference position detecting means of the component mounting machine when the position matches the reference position of the component mounting machine.

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