JP6801083B2 - Wearing machine - Google Patents

Description

The present disclosure relates to a mounting machine that mounts components on a circuit board.

Patent Documents 1 and 2 describe a mounting machine including a pair of stylus for measuring the electrical characteristics of a component. Among them, the mounting machine described in Patent Document 1 has a holding table for holding parts, a stator and a mover, and a pair of stylus capable of measuring electrical characteristics by sandwiching the parts, and a mover. Includes an air supply device that supplies air to the end faces. In this mounting machine, air is supplied by the air supply device above the portion of the end face of the mover that comes into contact with the parts. The air flows downward along the end face and can drop the parts attached to the end face of the mover. The mounting machine described in Patent Document 2 includes a holding table and a pair of electrodes as a pair of stylus that are provided so as to project from the holding table and that come into contact with parts to measure electrical characteristics. In this mounting machine, when the number of measurements of the electrical characteristics of the parts reaches the set number of measurements, an instruction for maintenance work is issued. As a result, the operator performs maintenance work such as cleaning the electrode pair.

International Publication No. 2017/099887 Pamphlet International Publication No. 2014/155657 Pamphlet

Overview

Problems to be solved

An object of the present disclosure is to reduce maintenance work such as cleaning by an operator.

Means, actions and effects to solve problems

In the mounting machine according to the present disclosure, cleaning of at least one of the pair of stylus is automatically performed. The operator is less required to perform work such as cleaning at least one of the pair of stylus. As a result, the maintenance work of the operator can be reduced.

It is a perspective view of the mounting machine which concerns on Example 1 of this disclosure. It is a figure which shows the periphery of the suction nozzle of the mounting head included in the mounting machine. It is a perspective view of the measuring apparatus included in the said mounting machine. It is sectional drawing of the main part of the said measuring apparatus. It is a figure which shows the periphery of the air cylinder of the said measuring apparatus. It is a figure which shows the periphery of the control device of the said mounting machine. It is a flowchart which shows the LCR measurement program stored in the storage part of the said control device. It is a flowchart which shows a part (cleaning routine) of the said LCR measurement program. FIG. 9A is a diagram showing an initial state of the measuring device. (Fig. 9B) is a diagram showing a clamped state of the measuring device. (Fig. 9C) is a diagram showing a measurement state of the measuring device. (Fig. 9D) is a diagram showing a disposal state of the measuring device. This is an example of the resistance value measured in the above-mentioned measuring device in a state where the facing surface of the stylus is dirty. It is a flowchart which shows the cleaning routine different from the said cleaning routine. It is a flowchart showing another LCR measurement program stored in the storage part of the said control device. It is a flowchart which shows the measurement number counting program stored in the storage part of the control device of the wearing machine which concerns on Example 2 of this disclosure. It is a flowchart which shows the said cleaning routine. It is a flowchart which shows the measurement time measurement program stored in the said storage part. It is sectional drawing which shows the main part of the measuring apparatus of the mounting machine which concerns on Example 3 of this disclosure. It is sectional drawing which shows the main part of the measuring apparatus of the mounting machine which concerns on Example 4 of this disclosure. It is a front view of the main part of the said measuring apparatus. It is a perspective view of the measuring apparatus of the mounting machine which concerns on Example 5 of this disclosure. It is a flowchart which shows the LCR measurement program stored in the storage part of the control device of the said wearing machine. It is a flowchart which shows a part (cleaning routine) of the said LCR measurement program.

Embodiment

Hereinafter, the mounting machine including the measuring device according to the embodiment of the present disclosure will be described in detail with reference to the drawings.

The mounting machine shown in FIG. 1 mounts components on a circuit board, and includes a main body 2, a circuit board transfer holding device 4, a component supply device 6, a head moving device 8, a measuring device 26, and the like.
The circuit board transport holding device 4 transports and holds the circuit board P (hereinafter, abbreviated as the substrate P). In FIG. 1, the transport direction of the substrate P is in the x direction and the width direction of the substrate P is y. The direction and the thickness direction of the substrate P are defined as the z direction. The y-direction and the z-direction are the front-rear direction and the up-down direction of the mounting machine, respectively. These x-direction, y-direction, and z-direction are orthogonal to each other. The component supply device 6 supplies electronic components (hereinafter, abbreviated as components) s mounted on the substrate P, and includes a plurality of tape feeders 14 and the like. The head moving device 8 moves the slider that holds the mounting head 16 in the x, y, and z directions, and the mounting head 16 holds a suction nozzle 18 that sucks and holds the component s. The suction nozzle 18 sucks and holds the component s by supplying (suctioning) a negative pressure, releases the component s by supplying a positive pressure (air), and mounts the component s on the substrate P. As shown in FIG. 2, the suction nozzle 18 includes an air passage 19 that opens at the tip thereof, and the air passage 19 has a negative pressure source 20 including a vacuum pump and the like and a positive pressure source 22 including an air source and the like. They are connected via solenoid valves 20v and 22v, respectively. By controlling the solenoid valves 20v and 22v, it is possible to switch between the presence / absence of negative pressure supply and the presence / absence of positive pressure supply. A camera 23 (see FIG. 6) as an imaging device is attached to the slider. The camera 23 is a mark camera that captures a reference mark or the like provided on the substrate P. The mark camera 23 can be tilted with respect to the z-axis extending in the vertical direction, for example.

Reference numeral 24 indicates a camera. The camera 24 is fixedly provided on the main body 2 and captures the component s held by the suction nozzle 18. Based on the image captured by the camera 24, it is determined whether or not the component s is to be mounted on the substrate P. Reference numeral 25 indicates a nozzle station. The nozzle station houses a plurality of suction nozzles, including nozzles made of an insulating material. Reference numeral 26 indicates a measuring device. The measuring device 26 measures the electrical characteristics of the component s. L (inductance), C (capacitance), R (resistance), Z'(impedance) and the like correspond to the electrical characteristics of the component s, and one or more of these is measured by the measuring device 26.

The measuring device 26 is provided on the main body of the circuit board transfer holding device 4 via the trash can 27. The trash can 27 and the measuring device 26 are connected by a disposal passage 28. The component s whose electrical characteristics have been measured is housed in the trash can 27 via the disposal passage 28.

As shown in FIGS. 3 to 5, the measuring device 26 is composed of (i) a main body 30, (ii) a holding base 32 having a component holding portion capable of holding the component s, and (iii) a stator 34 and a mover 36. A pair of stylus 37, (iv) a holding base moving device 40 for moving the holding base 32, (v) a mover moving device 41 for moving the mover 36 to approach and separate from the stator 34, (vi). It includes an LCR detection unit 42 and the like as an electrical characteristic detection unit. In this embodiment, the component s has electrode portions at both ends and can be gripped by a pair of stylus 37 at the electrode portions. As the component s, for example, a square chip is applicable.

As shown in FIG. 4, an opening 30a is provided at the bottom of the main body 30. The opening 30a communicates with the disposal passage 28.

The holding base 32 is integrally and movably held by the holding base main body 46. The holding base 32 includes a groove portion 45 as a component holding portion formed on the upper surface of the holding base 32. The component s is placed on the groove 45 and held.

The holding base 32 is manufactured of a conductive material such as an aluminum alloy or a stainless steel material, and is electrically connected to the main body 30 via a member formed of a plurality of conductive materials (with internal conduction). May be referred to). Further, since the main body 30 is grounded, the holding base 32 is also grounded. That is, the holding base 32 comes into contact with the holding base main body 46 and is fixed by the fastening portion 47, and the holding base main body 46 comes into contact with the main body 30 via the stopper 80 (see FIG. 4). The holding base main body 46, the stopper 80, the main body 30, the fastening portion 47, and the like are made of a conductive material. Therefore, the holding base 32 is grounded via the holding base main body 46, the stopper 80, the fastening portion 47, the main body 30, and the like.

A cover portion 50 is attached to the stator 34 side of the holding base 32. As will be described later, the cover portion 50 prevents the diffusion of air and prevents the scattering of parts s and foreign matter that have fallen due to the ejection of air. The cover portion 50 includes a pair of cover plate portions 52, 54 provided on both sides of the groove portion 45, respectively, separated from each other in the x direction. The cover plate portions 52 and 54 extend in the y direction and the z direction, that is, in the moving direction and the vertical direction of the holding base 32 and the mover 36, respectively.

The stator 34 and the mover 36 are provided so as to be close to and separated from each other. The stator 34 is fixed to the main body 30 via the stator holder 55. The mover 36 is held by the mover holder 56 at one end (the end on the retracting side), and is made movable integrally with the mover holder 56. Further, the other end of the mover 36 (the end on the forward side) is provided with an engaging portion 36a that can engage with the groove portion 45.

A pair of stylus 37 is formed by the stator 34 and the mover 36. The stator 34 and the mover 36 have facing surfaces 34f and 36f facing each other, respectively, and the component s is gripped by the pair of facing surfaces 34f and 36f. That is, in a state where the electrode portions at both ends of the component s and the pair of stylus 37 are in contact with each other (in a state where electricity can be supplied), the component s, the pair of stylus 37, the LCR detection unit 42, the power supply device (not shown), and the like are mounted. The including electric circuit 58 is formed. With a voltage applied between the stator 34 and the mover 36, the current flowing between them is detected by the LCR detection unit 42, and based on the applied voltage, the flowing current, and the like, The electrical characteristics of the component s are acquired. The LCR detection unit 42 is not limited to the detection unit that detects L, C, and R, and can detect one or more physical quantities that represent electrical characteristics such as L, C, R, and Z'. Reference numerals 58a and 58b in FIGS. 3 and 4 are connections of the pair of stylus 37 to the electric circuit 58.

The measuring device 26 includes a fixed air supply device (hereinafter, abbreviated as an air supply device) 59. As shown in FIG. 4, the air supply device 59 includes an air passage 60, an ionizer 62, an air source 68, solenoid valve devices 69 and 72, a solenoid valve 73, and the like. The air passage 60 includes an internal passage 60h formed in the stator holder 55, the main body 30 and the like, an ejection passage 60s formed in the stator 34 and the like. The ejection passage 60s generally inclines downward in the y direction as it approaches the mover 36, and the opening 60a faces the facing surface 36f of the mover 36. Further, the air ejected from the opening 60a of the ejection passage 60s includes a portion (grip portion) R that frequently grips the component s on the facing surface 36f of the mover 36, and is supplied to a portion RK wider than the portion R. To. In this embodiment, the air ejection portion 60b is configured by the ejection passage 60s, the opening 60a, and the like. The opening 60a has a shape that expands downward as compared with the opening of the air supply device described in Patent Document 1, and has a shape that can widely supply air to the lower portion of the facing surface 36a of the mover 36. ing.
An air source 68 or the like is connected to the air passage 60 via an ionizer 62. The ionizer 62 generates a corona discharge to ionize air, and ionizes and supplies air. The air source 68 can be the same as the positive pressure source 22 described above.

The holding base moving device 40 moves the holding base 32, and includes an air cylinder 64 as a drive source. As shown in FIG. 5, in the air cylinder 64, the inside of the housing is partitioned into two air chambers 64a and 64b by a piston, and the holding base body 46 is connected to the piston rod 66 of the piston. A solenoid valve device 69 is provided between the two air chambers 64a and 64b, the air source 68, the air passage 60, and the filter (atmosphere). The solenoid valve device 69 includes a plurality of solenoid valves, and the holding base 32 is moved forward and backward under the control of the solenoid valve device 69. When the holding table 32 is advanced, the air source 68 is communicated with the air chamber 64b, and the air passage 60 is communicated with the air chamber 64a. Therefore, air is supplied to the air passage 60 as the holding table 32 advances.

The mover moving device 41 moves the mover 36, and includes an air cylinder 70 as a drive source. Similarly, in the air cylinder 70, two air chambers 70a and 70b partitioned by a piston are formed inside the housing, and the mover holder 56 is connected to the piston rod 71 of the piston. An air source 68, an air passage 60, and a filter (atmosphere) are connected to the two air chambers 70a and 70b via a solenoid valve device 72. The mover 36 is moved forward and backward under the control of the solenoid valve device 72. When the mover 36 is retracted, the air source 68 is communicated with the air chamber 70a and the air passage 60 is communicated with the air chamber 70b. Therefore, air is supplied to the air passage 60 as the mover 36 retracts.

Further, the air source 68 and the air passage 60 are connected to each other via the solenoid valve 73 by bypassing the cylinders 64 and 70. By the control of the solenoid valve 73, the air source 68 is cut off from the air passage 60 and communicated with the cylinders 64 and 70, and the air source 68 is communicated with the air passage 60 and cut off from the cylinders 64 and 70. It can be switched. Further, the cylinders 64 and 70, the air passage 60, and the air source 68 can be switched between a communication state and a cutoff state by controlling the solenoid valves 69 and 72, respectively.

As shown in FIG. 3, a pair of guide rods 74 and 75 extending in the y direction are provided between the main body 30 or the stator holder 55 and the mover holder 56, and the holding base 32 and the mover holder are held. A pair of guide rods 76, 77 extending in the y direction are provided between the body 56 and the body 56. These guide rods 74, 75, 76, and 77 make it possible for the stator 34 and the mover 36 to move relative to each other in the y direction, and for the holding base 32 and the mover 36 to move relative to each other in the y direction. To.
Further, as shown in FIG. 4, a stopper 82 is provided on the stator side of the mover holder 56, and a stopper 80 is provided on the main body 30 or the stator holder 55. The stopper 82 defines the approach limit between the mover holder 56 and the holding base 32 (holding base main body 46), and the stopper 80 defines the proximity of the stator 34 and the holding base 32 (holding base main body 46). It defines limits.

The mounting machine includes a control device 100. As shown in FIG. 6, the control device 100 includes a controller 102 mainly composed of a computer and a plurality of drive circuits 104. The controller 102 includes an execution unit 110, a storage unit 112, an input / output unit 114, and the like. In the input / output unit 114, a board transfer holding device 4, a component supply device 6, and a head moving device 8 each have a drive circuit 104. In addition to being connected via, the holding base moving device 40, the solenoid valve devices 69 and 72 of the mover moving device 41, the solenoid valves 20v, 22v, 73 and the like are connected. Further, the LCR detection unit 42, the display 116, the mover position sensor 118, the holding base position sensor 120, the nozzle height sensor 122 that detects the height of the nozzle 18, the mark camera 23, the camera 24, and the like are connected. A plurality of programs and tables such as the LCR measurement program represented by the flowchart of FIG. 7 are stored in the storage unit 112. Further, the time is measured by the timer 124 provided in the controller 102. In this embodiment, the solenoid valve devices 69 and 72 are controlled by using the output of the holding base position sensor 120 and the mover position sensor 118, the measurement time by the timer 124, and the like, and the holding base 32 and the mover 36 move forward. , Be retreated.

The operation of the mounting machine will be described below.
When a new tape feeder 14 is set, the tape feeder 14 is replaced, or the like, when a command for measuring the electrical characteristics of the component s is issued, the electrical component s held by the tape feeder 14 is electrically operated. The characteristics are measured. It is also possible to compare the measured value, which is the value of the measured electrical characteristics, with the standard value of the component, and determine whether or not they substantially match. In that case, the result of comparing the measured value and the standard value can be displayed on the display 116.

Further, by measuring the electrical characteristics of the component s, foreign matter such as plating of the component s adheres to the facing surfaces 34f and 36f of the stator 34 and the mover 36 and becomes dirty. If foreign matter such as plating adheres to the facing surfaces 34f and 36f, the electrical characteristics of the component s cannot be accurately measured. For example, as shown in FIG. 10, when the electrical characteristics of the component s are measured with foreign matter attached, the measured value greatly deviates from the specified value A even if the component s is normal. Moreover, the variation becomes large. Therefore, in this embodiment, the facing surfaces 34f and 36f are imaged by the mark camera 23, and the necessity of cleaning is determined based on the captured images of the facing surfaces 34f and 36f, respectively. Then, the foreign matter adhering to the facing surfaces 34f and 36f determined to require cleaning is removed.

The electrical characteristics of the component s are measured by executing the LCR measurement program shown in the flowchart of FIG.
In the non-operating state of the mounting machine, the measuring device 26 is in the initial state shown in FIG. 9A. The mover 36 is in the retracted end position and the holding base 32 is in the forward end position. Since the holding base 32 is in contact with the stopper 80, it is in a state of being grounded by internal continuity or the like.

In step 1 (hereinafter, abbreviated as S1; the same applies to other steps), it is determined whether or not a measurement command for the electrical characteristics of the component s has been issued. When a measurement command is issued, in S2, for example, the component s held in the tape feeder 14 is picked up by the suction nozzle 18, released by the supply of positive pressure, and held in the groove 45. It can be seen that the component s was held in the groove 45 by lowering the suction nozzle 18 and switching the solenoid valve 22v to open.

In S3, after the suction nozzle 18 is raised to the rising end, the mover 36 is moved (hereinafter, referred to as forward) in the direction indicated by the arrow F in FIG. 4 under the control of the solenoid valve device 72. The mover 36 is advanced along the groove 45 of the holding base 32, and the component s is clamped by the facing surface 34f of the stator 34 and the facing surface 36f of the mover 36. Further, the facing surfaces 34f and 36f are in contact with the electrode portions at both ends of the component s. This state is the clamp state shown in FIG. 9B.
In S4, the holding table 32 is moved (hereinafter, referred to as backward) in the direction indicated by the arrow B in FIG. The holding table 32 is made of a conductive material. Therefore, when measuring the electrical characteristics of the component s, the holding base 32 is retracted rearward from the engaging portion 36a and separated from the component s and the engaging portion 36a.

In S5, it is determined whether or not the elapsed time since the component s is placed on the holding table 32 has reached the static elimination time. The electric charge charged on the component s is eliminated via the holding table 32. The time required for static elimination of the component s is determined in advance by the characteristics and size of the component s. When the static elimination time elapses and the determination is YES, the electrical characteristics are measured in S6. This state is the measurement state shown in FIG. 9C.

When the measurement of the electrical characteristics of the component s is completed, in S7, the mover 36 is retracted to the retracted end position under the control of the solenoid valve devices 72 and 69, and the holding base 32 is retracted until it comes into contact with the stopper 82. .. The front end surface of the holding base 32 is located substantially the same as or behind the facing surface 36f of the mover 36, and the holding base 32 does not exist below between the pair of facing surfaces 34f and 36f. This state is the disposal state shown in FIG. 9D. The component s falls downward and is housed in the trash can 27 through the opening 30a and the disposal passage 28. Further, when the mover 36 is retracted, air is ejected from the opening 60a of the ejection passage 60s and hits the partial RK of the mover 36. Further, the cover portion 50 covers the space between the pair of facing surfaces 34f and 36f from the x direction. As a result, the component s can be satisfactorily dropped from the facing surface 36f, and the component s can be prevented from scattering.

After the component s is discarded, the cleaning routine described later is executed in S9, and then in S10, the holding base 32 is advanced to the advancing end position where the stopper 80 abuts under the control of the solenoid valve device 69, and FIG. 9A It is the initial state shown in. Further, when the holding base 32 is advanced, air is supplied from the opening 60a of the ejection passage 60s to the facing surface 36f of the mover 36. Therefore, it is possible to eliminate static electricity on the facing surface 36f of the mover 36.

An example of the cleaning routine of S9 is shown in the flowchart of FIG.
In S21, the mark camera 23 is moved to a position where the facing surface 34f of the stator 34 can be imaged and a position where the facing surface 36f of the mover 36 can be imaged, respectively, and the facing surface 34f and the facing surface 36f, respectively. Is imaged. When the mark camera 23 images the facing surfaces 34f and 36f, the mark camera 23 can be tilted with respect to the z-axis to direct the lens toward the facing surfaces 34f and 36f, respectively. Further, depending on the field of view of the mark camera 23, it may be possible to image the facing surfaces 34f and 36f at once. In that case, the mark camera 23 is moved to a position where both the facing surfaces 34f and 36f can be imaged.

In S22, by processing the captured images of the facing surfaces 34f and 36f, the necessity of cleaning is determined for each of the facing surfaces 34f and 36f. For example, cleaning is performed when foreign matter adheres to the facing surfaces 34f and 36f, or when foreign matter adheres to the facing surfaces 34f and 36f to the extent that the measurement accuracy of the electrical characteristics of the component deteriorates. Can be determined to be necessary.

When it is determined that cleaning is required for at least one of the facing surfaces 34f and 36f, the determination in S22 is YES, and cleaning is performed in S23. For example, when it is determined that cleaning is required for both the facing surfaces 34f and 36f, the suction nozzles 18 are sequentially moved above the facing surfaces 34f and 36f (the ends of the stator 34 and the mover 36). It is moved to, and each is lowered. The solenoid valve 22v is opened, and air is blown from the tip of the suction nozzle 18 toward the ends of the stator 34 and the mover 36 to be supplied. The air flows along the facing surfaces 34f and 36f. Further, under the control of the solenoid valve 73, the air source 68 is communicated with the air passage 60, and the air is ejected and supplied toward the facing surface 36f. When the solenoid valve 73 is controlled, the solenoid valve devices 69 and 72 may shut off the air cylinders 64 and 70, the air source 68, and the air passage 60. As described above, in the cleaning, both the air supply from the suction nozzle 18 to the facing surfaces 34f and 36f and the air supply from the air supply device 59 to the facing surfaces 36f are performed, but both of them are performed. Is not essential, at least one should be done. Further, these may be performed in parallel or in order, and the order may be any first.

By cleaning, foreign matter adhering to the facing surfaces 34f and 36f can be dropped. Further, the foreign matter peeled off from at least one of the facing surfaces 34f and 36f falls and is stored in the trash can 27 via the disposal passage 28.
As shown in FIG. 9D, since the stator 34 and the mover 36 are covered by the cover portion 50 in the discarded state, air is circulated in a spiral shape inside the cover portion 50. Therefore, the air ejected from the air ejection portion 60b toward the facing surface 36f makes it easier for foreign matter adhering to the facing surface 34f to fall off.

After that, it is returned to S21, the facing surfaces 34f and 36f are imaged by the mark camera 23, respectively, and in S22, the necessity of cleaning is determined for each of the facing surfaces 34f and 36f. When it is determined that cleaning is necessary for at least one of the facing surfaces 34f and 36f, cleaning is performed in S23. Hereinafter, S21 to 23 are repeatedly executed while it is determined that cleaning is necessary for at least one of the facing surfaces 34f and 36f, but when cleaning is no longer necessary for both the facing surfaces 34f and 36f, The determination in S22 becomes NO, and in S24, termination processing such as closing the solenoid valve 22v and closing the solenoid valve 73 is performed.

The mounting head 16 may be moved to the measuring device 26 for imaging and cleaning, or may be moved to the measuring device 26 for measuring the electrical characteristics of the component s, and may also perform imaging and cleaning. is there. In any case, after cleaning, the mounting head 16 is separated from the measuring device 26.

As described above, in this embodiment, cleaning of at least one of the facing surfaces 34f and 36f is automatically performed by at least one of the air supply device 59 and the suction nozzle 18. Therefore, the maintenance work of the operator can be reduced. Further, in the cleaning routine, the mark camera 23 takes an image of the facing surfaces 34f and 36f, and cleaning is performed until it is determined that cleaning is unnecessary. As a result, foreign matter adhering to the facing surfaces 34f and 36f can be satisfactorily removed, and a decrease in measurement accuracy of the electrical characteristics of the component can be satisfactorily suppressed.

In this embodiment, the movable air supply device is configured by the suction nozzle 18, the air passage 19, the positive pressure source 22, the solenoid valve 22v, etc., and at least one of the movable air supply device and the fixed air supply device 59 is used. A cleaning device is configured. Further, the cleaning control device is composed of a part for storing the cleaning routine shown in the flowchart of FIG. 8 and a part for executing the cleaning routine of the control device 100, and the part for storing S22, the part for executing the cleaning, etc. The judgment unit is configured.

In the cleaning routine of S9, cleaning can be performed without determining the necessity of cleaning the facing surfaces 34f and 36f. In this embodiment, in S9, the cleaning routine shown in the flowchart of FIG. 11 is executed. Cleaning is performed in S31 every time the electrical characteristics of the component s are measured. The suction nozzle 18 supplies air to the facing surfaces 34f and 36f for a set time, and the air supply device 59 supplies air to the facing surfaces 36f for a set time. The air supply by the suction nozzle 18 and the air supply by the air supply device 59 may be performed in parallel or in order.

As described above, in this embodiment, air is supplied to the facing surfaces 34f and 36f every time the electrical characteristics of the parts s are measured. Therefore, it is possible to prevent foreign matter from adhering to the facing surfaces 34f and 36f, and it is possible to satisfactorily suppress a decrease in measurement accuracy of the electrical characteristics of the component s. In this embodiment, the cleaning control device is configured by a portion of the control device 100 that stores S9 (cleaning routine represented by the flowchart of FIG. 11), a portion that executes the control device 100, and the like.

Further, in the present embodiment, it is possible that the image is taken before the measurement of the electrical characteristics of the component s, and after the measurement, the necessity of cleaning and the cleaning are performed. An example of the LCR measurement program in that case is shown in the flowchart of FIG. In S2, the component s is placed on the holding table 32, and in S3, before the mover 36 is advanced, that is, in S2a (in the initial state), the facing surfaces 34f and 36f are imaged by the mark camera 23. Then, after the execution of S8 (disposal state), the cleaning routine is executed in S9'. In S9', S22 and subsequent steps in the flowchart of FIG. 8 are executed. Based on the images of the pair of facing surfaces 34f and 36f captured in the initial state, the necessity of cleaning each of the facing surfaces 34f and 36f is determined in the disposal state, and at least the facing surfaces 34f and 36f are determined. When it is determined that cleaning is necessary for one of them, cleaning is performed. This embodiment is effective when it takes a long time to process the image captured by the mark camera 23. Further, when it is determined that cleaning is unnecessary, it is not necessary to move the suction nozzle 18 to the measuring device 26, so that unnecessary movement of the mounting head 16 can be reduced and power consumption can be reduced. be able to.

In this embodiment, the cleaning control device is configured by the part that stores S2a and S9'in the flowchart of FIG. 12, the part that executes the cleaning, and the like, and the part that stores S22, the part that executes the cleaning, etc. The part is composed.

Further, it is not essential to attach the mark camera 23 so as to be tiltable with respect to the z-axis, and the mark camera 23 can be attached in a posture in which the optical axis extends parallel to the z-axis.

In this embodiment, when the number of measurements of the component s by the pair of stylus 37 reaches the set number of measurements, it is determined that both the facing surfaces 34f and 36f need to be cleaned. The other parts of the mounting machine are the same as the configuration of the mounting machine of the first embodiment, and the LCR measurement program shown in the flowchart of FIG. 7 is executed.

The number-of-times counting program represented by the flowchart of FIG. 13 is executed every set time. In S41, it is determined whether or not a measurement command for the electrical characteristics of the component s has been issued. If the determination is YES, the number of times counter is incremented by 1 in S42. In S43, it is determined whether or not the measurement number C, which is the count value counted by the count counter, has reached the set measurement count Cth, and before the count value reaches the set measurement count Cth, the measurement count by the count counter is determined. The count is continued. When the number of measurements C reaches the set number of measurements Cth, the cleaning required flag is turned ON in S44, and the count value of the number counter is set to 0 in S45.

If the main switch of the mounting machine is turned off during the counting of the number of measurements by the number counter, the count value at that time is stored in the storage unit 112. Then, when the main switch is turned ON, the count value is read and the number of measurements is cumulatively counted.

An example of the cleaning routine is shown in the flowchart of FIG.
The cleaning routine is performed (in the discarded state) in S9 of the LCR measurement program as in the above embodiment.
In S51, it is determined whether or not the cleaning required flag is ON. If the determination is YES, in S52, the suction nozzle 18 is moved and lowered, respectively, above the facing surfaces 34f and 36f, respectively. Then, at that position, air is ejected from the tip of the suction nozzle 18 for a set time by controlling the solenoid valve 22v. Further, by controlling the solenoid valve 73 or the like, air is ejected from the air passage 60 toward the facing surface 36f for a set time. After that, in S53, end processing such as turning off the cleaning required flag is performed.

As described above, in this embodiment, in cleaning, air is supplied to each of the facing surfaces 34f and 36f for a set time. Therefore, foreign matter adhering to the facing surfaces 34f and 36f may not be satisfactorily removed, but in that case, cleaning is performed by an operator. However, even in this case, since air is supplied to the facing surfaces 34f and 36f in advance, it is possible to reduce the cleaning work of the facing surfaces 34f and 36f by the operator.

The number of measurements is actually counted every time a voltage is applied between the stator 34 and the mover 36, or every time the LCR detection unit 42 obtains electrical characteristics. You can also do it. In this embodiment, the measurement number counting unit is composed of a portion for storing the measurement number counting program represented by the flowchart of FIG. 13 and a portion for executing the control device 100, and the measurement number counting unit, S9 (FIG. 14). The cleaning control device is composed of a part for storing the cleaning routine (shown in the flowchart), a part for executing the cleaning routine, and the like.

In this embodiment, when the measurement time, which is the cumulative total time for measuring the electrical characteristics of the parts s by the pair of stylus 37, reaches the set measurement time, it is necessary to clean both the facing surfaces 34f and 36f. Is determined to be. The other parts of the mounting machine are the same as the configuration of the mounting machine according to the second embodiment.
The measurement time measurement program represented by the flowchart of FIG. 15 is executed at predetermined set times. In S61, it is determined whether or not it is in the measurement state. That is, the part s is gripped by the stator 34 and the mover 36, and it is determined whether or not the voltage is applied. If it is in the measurement state, the determination is YES, and the time is measured by the timer 124 in S62. In S63, it is determined whether or not the measurement time t has reached the set measurement time Ts. If the determination is YES, the cleaning required flag is turned ON in S64, and the timer is cleared in S65.

In the present embodiment, as in the case of the second embodiment, when the main switch of the mounting machine is turned off, the measured measurement time is stored in the storage unit 112. Next, when the main switch is turned on, the measurement is started from the stored measurement time. Further, the cleaning routine shown in the flowchart of FIG. 14 can be executed.

The cumulative total time during which the component s is gripped by the stator 34 and the mover 36 can also be referred to as the measurement time in a broad sense. In this case, the time in the clamped state of FIG. 9B and the measurement state of FIG. 9C is measured.

In this embodiment, the part of the control device 100 that stores and executes the measurement time measurement program represented by the flowchart of FIG. 15, the portion that stores S9 (the cleaning routine represented by the flowchart of FIG. 14), and the execution. The cleaning control device is composed of the parts to be cleaned.

In this embodiment, as shown in FIG. 16, the measuring device is provided with a fixed air supply device (hereinafter, abbreviated as an air supply device) 150 instead of the fixed air supply device 59. The other parts of the mounting machine are the same as the configuration of the mounting machine of the first embodiment, and the LCR measurement program represented by the flowchart of FIG. 7 or FIG. 12 is executed. Further, in S9, the cleaning routine shown in the flowchart of FIGS. 8, 8 (excluding S21) or 11 is executed. In that case, the air supply device 150 is operated. Further, it is not always necessary to supply air by the suction nozzle 18.

The air supply device 150 includes, as shown in FIG. 16, an air ejection portion 154 provided on the mover 152, in addition to the air ejection portion 60b. The air ejection portion 154 includes an ejection passage 154s and an opening 154a. The ejection passage 154s is generally inclined downward as it approaches the stator 34 in the y direction, and the opening 154a faces the facing surface 34f of the stator 34. The ejection passage 154s is connected to the air passage 60 by the air passage 156. Further, the air ejected from the opening 154a is supplied to the partial RM that frequently grips the component s on the facing surface 34f of the stator 34.
In this embodiment, in cleaning, air is ejected by the air supply device 150 toward both the facing surface 36f of the mover 36 and the facing surface 34f of the stator 34, respectively. As a result, foreign matter adhering to the facing surfaces 34f and 36f can be removed.

In this embodiment, the measuring device includes a wiper device 170 as a cleaning device, as shown in FIGS. 17 and 18. The other parts of the mounting machine are the same as the configuration of the mounting machine of the first embodiment, and the LCR measurement program represented by the flowchart of FIG. 7 or FIG. 12 is executed. Further, in S9, the cleaning routine shown in the flowcharts of FIGS. 8 and 8 (excluding S21) or FIG. 11 is executed. In this case, the air supply device 59 and the suction nozzle 18 supply air. In addition, or instead of supplying air by at least one of the air supply device 59 and the suction nozzle 18, the wiper device 170 can be operated.

The wiper device 170 includes a main body 172, a rotary shaft 174 rotatably held by the main body 172, a rod 176 rotatably held by the rotary shaft 174, an electric motor 180 connected to the rotary shaft 174, and the like. .. A wiper 178 such as a non-woven fabric is provided at the tip of the rod 176. Further, the rotation shaft 174 is rotated with the rotation of the electric motor 180, and the wiper 178 is rotated. In this embodiment, the wiper device 170 is attached to the mover 36, but can also be attached to the stator 34.

When cleaning is not performed, as shown by the solid line in FIG. 18, the rod 176 is located in the x and y planes, and the wiper 178 is in a non-acting position away from the facing surface 36f of the mover 36. When cleaning is performed, as shown by the alternate long and short dash line in FIG. 18, the rod 176 extends in the vertical direction, and the wiper 178 is set to the action position where it comes into contact with the facing surface 36f. At this working position, the wiper 178 is reciprocated by the electric motor 180, as indicated by the arrow. Thereby, the foreign matter adhering to the facing surface 36f can be removed. A brush or a brush can be attached to the tip of the rod 176 instead of the wiper 178.

The measuring device may have the structure shown in FIG. The control device 100 of the mounting machine stores and executes the LCR measurement program represented by the flowchart of FIG. The other parts of the mounting machine are the same as those of the mounting machine of the first embodiment.
The measuring device 200 includes a plurality of measuring tables 202, and each of the plurality of measuring tables 202 is provided with a pair or two pairs of electrode pairs 204 protruding from each other. Further, the measuring device 200 is attached to the trash can 27 via the measuring table holder 206.
Then, while the component s is held by the suction nozzle 18, the electrode portion of the component s is brought into contact with the pair of electrode pairs 204, and the electrical characteristics are measured. Further, after the electrical characteristics are measured, the part s is discarded in the trash can 27.
In this embodiment, an insulating nozzle made of an insulating material is used as the suction nozzle 18.

In this embodiment, the LCR measurement program represented by the flowchart of FIG. 20 is executed. In S71, it is determined whether or not a measurement command for the electrical characteristics of the component s has been issued. When a measurement command is issued, in S72, the suction nozzle 18 picks up the component s supplied by the component supply device 6 and brings it into contact with the pair of electrode pairs 204. In S73, the electrical characteristics are measured while the component s is held by the suction nozzle 18. After that, the suction nozzle 18 holding the component s is separated from the electrode pair 204. In S74, the mark camera 23 moves the electrodes constituting the electrode pair 204 to positions where they can be imaged, and the electrodes are imaged at each position. Further, in S75, the part s is discarded in the trash can 27. In S76, the cleaning routine is executed, and in S77, the termination process is performed. When the mark camera 23 can simultaneously image a pair of electrode pairs 204, the mark camera 23 is moved to a position where the pair of electrode pairs 204 can be simultaneously imaged and imaged.

The cleaning routine of S76 will be described with reference to the flowchart of FIG.
In S81, the necessity of cleaning is determined based on the image captured by the mark camera 23. When cleaning is required, in S82, the suction nozzle 18 is moved above and below the two electrodes constituting the electrode pair 204, respectively, and lowered. Then, by controlling the solenoid valve 22v, positive pressure is ejected from the tip of the suction nozzle 18 toward the electrode for a set time, and cleaning is performed.

In this embodiment, the cleaning control device has a portion for storing S74, 76 (cleaning routine represented by the flowchart of FIG. 21) of the LCR measurement program represented by the flowchart of FIG. 20 of the control device 100, a portion for executing the cleaning control device 100, and the like. A cleaning necessity determination unit is configured by a portion that stores S81, a portion that executes S81, and the like. The imaging of S74 may be performed in the cleaning routine. Moreover, the steps of S74 and 81 are not indispensable.

In each of the above embodiments, the case where cleaning is performed in relation to the measurement of the electrical characteristics of the parts s has been described, but the cleaning is performed exclusively regardless of the measurement of the electrical characteristics. can do. For example, the mounting head 16 can be moved to the measuring devices 26,200 and cleaned without the parts being held by the suction nozzle 18.
In addition, two or more of the above-mentioned plurality of examples can be implemented in combination with each other, and the present disclosure can be implemented in a form in which various changes and improvements have been made based on the knowledge of those skilled in the art. ..

8: Head moving device 16: Mounting head 8: Suction nozzle 19: Mark camera 22: Positive pressure source 22v: Electromagnetic valve 26: Measuring device 30: Main body 30a: Opening 34: Stator 36: Movables 34f, 36f: Facing surfaces 59: Air supply device 60: Air passage 60b: Air ejection part 60s: Eject passage 68: Air source 73: Electromagnetic valve 100: Control device 150: Air supply device 154: Air ejection part 154s: Eject passage 170: Wipe device 200: Measuring device 204: Electrode pair

Claimable aspect

The patentable aspects are described in the following sections.
(1) A mounting machine that picks up the parts supplied by the parts supply device and mounts them on the circuit board.
A pair of stylus measuring the electrical characteristics of the component by contacting the component,
A cleaning device that cleans at least one of the pair of stylus.
A mounting machine including a cleaning control device that operates the cleaning device at a predetermined timing.
For example, when one of a pair of stylus is cleaned by a cleaning device, the operator does not need to clean one of the stylus, and maintenance work such as cleaning is reduced accordingly. can do.
Cleaning can also be performed in connection with the measurement of the electrical properties of the part or not in connection with the measurement of the electrical properties of the part.

(2) The mounting machine according to item (1), wherein the cleaning control device operates the cleaning device each time the pair of stylus measures the electrical characteristics of the component.
For example, cleaning can be done on a regular basis.

(3) The cleaning control device includes a measurement number counting unit that counts the number of times the electrical characteristics of the component are measured by the pair of stylus, and the measurement number counted by the measurement number counting unit is predetermined. The wearing machine according to item (1), which operates the cleaning device when the set number of measurements is reached.

(4) The cleaning control device includes a timer for measuring the measurement time, which is the total time required for the pair of stylus to measure the electrical characteristics of the component, and the measurement time measured by the timer. The wearing machine according to item (1) or (3), which activates the cleaning device when a predetermined measurement time is reached.
The measurement time can be the total time when the pair of stylus is in contact with the component and the voltage is applied, or the total time when the pair of stylus is in contact with the component.

(5) The mounting machine includes an imaging device capable of imaging the pair of stylus.
The cleaning control device includes a cleaning necessity determination unit for determining the necessity of cleaning for each of the pair of stylus based on an image captured by the image pickup apparatus, and the cleaning necessity determination unit determines the necessity of cleaning. When it is determined that cleaning is necessary for at least one of the pair of stylus, the cleaning device is operated, and any one of the items (1), (3), and (4). The mounting machine described in.
The image pickup apparatus may be fixedly provided on the mounting machine or may be movablely provided. Further, the image pickup device can be mounted in a posture in which the optical axis of the lens is parallel to the vertical direction, or can be mounted so as to be tiltable in the vertical direction.

(6) The mounting machine includes a component holding device for holding the component and a moving device for moving the component holding device.
The imaging device is made movable by the moving device,
The cleaning control device moves the image pickup device to the moving device, and the image pickup device moves each of the pair of stylus to a position where the image pickup device can take an image. At each position, the image pickup device moves the pair of measurements. The wearing machine according to item (5), which images each of the children.
When two stylus of a pair of stylus can be imaged in one imaging by the imaging device depending on the field of view of the lens of the image pickup device, the distance between the pair of stylus, etc., the two stylus are imaged separately. There are cases where it is necessary to do so. In the former case, the imaging device is moved to a position where both of the pair of stylus can be imaged, and both of the pair of stylus are imaged. In the latter case, the imaging device is moved to a position corresponding to one of the pair of stylus to image one stylus and then to a position corresponding to the other of the pair of stylus. The other stylus is imaged.

(7) The item according to any one of (1) to (6), wherein the cleaning device removes foreign matter adhering to a portion of each of the pair of stylus that comes into contact with the component. Mounting machine.
The plating of the parts tends to adhere to the parts of the stylus that come into contact with the parts. Therefore, plating or the like corresponds to foreign matter.

(8) The mounting device according to any one of (1) to (7), wherein the cleaning device includes an air supply device that supplies air to at least one of the stylus.
Foreign matter adhering to the stylus can be removed by supplying air. The air supply device ejects air toward the part of the stylus that comes into contact with the part of the stylus to supply air, or supplies air to the stylus so that the air flows along the part of the stylus that comes into contact with the part of the stylus. It can be supplied.

(9) Item (8), wherein the air supply device includes an air source, an air passage connected to the air source at one end and an opening at the other end, and a solenoid valve provided in the air passage. The mounting machine described in.

(10) The mounting machine includes a component holding device for holding the component and a moving device for moving the component holding device.
The component holding device includes a suction nozzle that holds the component by negative pressure and releases the component by positive pressure.
The cleaning control device causes the moving device to move the suction nozzle to a position corresponding to the at least one stylus, and at each position, the positive pressure is applied from the suction nozzle to the at least one stylus. Is to be supplied to
The mounting machine according to item (8) or (9), wherein the suction nozzle is a component of the air supply device.
The suction nozzle includes an air passage formed inside, and a positive pressure source and a negative pressure source are selectively communicated with the air passage.

(11) The pair of stylus measures the electrical characteristics of the component in a state where the component is held by the suction nozzle.
After the cleaning control device finishes measuring the electrical characteristics of the component and the component is released from the suction nozzle, the suction nozzle corresponds to each of the at least one stylus in the moving device. Item 2. The item (8) to (10), wherein the positive pressure is supplied from the suction nozzle to each of the at least one stylus at each position by moving each to a position. Wearing machine.
Before and during the measurement of the electrical characteristics of the component, the suction nozzle is in a state of holding the component and cannot be cleaned. Therefore, it is desirable that the suction nozzle be cleaned after measuring the electrical characteristics, releasing the component, and before starting the measurement of the electrical properties of the next component. In addition, the measured parts may be discarded in the trash can or used for mounting on a substrate.

(12) The pair of stylus are provided so as to be close to and separated from each other, and the parts are gripped by being brought close to each other, the electrical characteristics of the parts are measured, and the parts are separated from each other. To let go
Item (8) to (10), wherein the air supply device is provided on the at least one stylus and includes at least one air ejection portion that ejects air from one of the pair of stylus toward the other. The mounting machine described in any one.
The air ejection part may be provided on both of the pair of stylus or on either side.

(13) Item (12) The cleaning control device causes the at least one air ejection unit to eject the air toward the other stylus in a state where the pair of stylus is separated from each other. The mounting machine described in.

(14) The pair of stylus
In the initial state, they are separated from each other
In the measurement state, the parts are grasped by being brought close to each other, and the electrical characteristics are measured.
The mounting machine according to any one of items (1) to (10), (12) or (13), wherein the parts are released and discarded by being separated from each other in a disposal state.
In the disposal state, the lower part between the pair of stylus is an opening and communicates with the disposal passage.

(15) The mounting machine according to item (14), wherein the cleaning control device causes the cleaning device to clean at least one of the stylus in the disposal state.

(16) The mounting machine includes an imaging device capable of imaging the pair of stylus.
In the initial state, the cleaning control device causes the imaging device to image the pair of stylus, and in the disposal state, for each of the pair of stylus based on the image captured by the imaging device. The mounting machine according to item (14) or (15), wherein the cleaning device is used to clean at least one of the stylus, which determines the necessity of cleaning and determines that cleaning is necessary.
The necessity of cleaning can be determined in the state of disposal.

(17) The mounting machine includes an imaging device capable of imaging the pair of stylus.
The cleaning control device causes the image pickup device to take an image of the pair of stylus in the discarded state, determines whether or not cleaning of each of the pair of stylus is necessary based on the captured image, and the above-mentioned cleaning control device. The mounting machine according to item (14) or (15), wherein the cleaning device is used to clean at least one stylus that is determined to require cleaning.

Claims (10)

It is a mounting machine that picks up the parts supplied by the parts supply device and mounts them on the circuit board.
A pair of stylus measuring the electrical characteristics of the component by contacting the component,
A cleaning device that cleans at least one of the pair of stylus.
Including a cleaning control device that operates the cleaning device at a predetermined timing, including
The cleaning device includes an air supply device that supplies air to the at least one stylus.
The mounting machine includes a component holding device for holding the component and a moving device for moving the component holding device.
The component holding device includes a suction nozzle that holds the component by negative pressure and releases the component by positive pressure.
The cleaning control device causes the moving device to move the suction nozzle to a position corresponding to each of the at least one stylus, and at each position, the positive pressure is applied from the suction nozzle to the at least one of the suction nozzles. It is to be supplied to each stylus.
A mounting machine in which the suction nozzle is a component of the air supply device. The pair of stylus measures the electrical characteristics of the component while the component is held by the suction nozzle.
After the cleaning control device finishes measuring the electrical characteristics of the component and the component is released from the suction nozzle, the suction nozzle corresponds to each of the at least one stylus in the moving device. The mounting machine according to claim 1 , wherein the positive pressure is supplied from the suction nozzle to each of the at least one stylus at each position by moving each to a position. The pair of stylus are provided so as to be close to and separated from each other, and the parts are gripped by being brought close to each other, the electrical characteristics of the parts are measured, and the parts are released by being separated from each other. And
The mounting machine according to claim 1 , wherein the air supply device is provided on at least one of the pair of stylus and includes at least one air ejection portion that ejects air from one of the pair of stylus toward the other. .. The mounting machine according to claim 3 , wherein the cleaning control device causes the at least one air ejection unit to eject air toward the other stylus while the pair of stylus is separated from each other. .. The mounting machine according to any one of claims 1 to 4 , wherein the cleaning control device operates the cleaning device each time the electrical characteristics of the component are measured by the pair of stylus. The cleaning control device includes a measurement number counting unit that counts the number of times the electrical characteristics of the component are measured by the pair of stylus, and the measurement number counted by the measurement number counting unit is a predetermined setting measurement. The mounting machine according to any one of claims 1 to 4, which activates the cleaning device when the number of times is reached. The cleaning control device includes a timer that measures a measurement time that is a cumulative total of time required for measuring the electrical characteristics of the component by the pair of stylus, and the measurement time measured by the timer reaches a set measurement time. The mounting machine according to any one of claims 1 to 4, which operates the cleaning device when the cleaning device is used. The mounting machine includes an imaging device capable of imaging the pair of stylus.
The cleaning control device includes a cleaning necessity determination unit that determines the necessity of cleaning for each of the pair of stylus based on an image captured by the image pickup apparatus, and the cleaning necessity determination unit determines the necessity of cleaning. The mounting machine according to any one of claims 1 to 4, which activates the cleaning device when it is determined that cleaning of at least one stylus is necessary. The imaging device is made movable by the moving device,
The cleaning control device moves the imaging device to the moving device, and the imaging device moves each of the pair of stylus to a position where each of the pair of stylus can be imaged. The mounting machine according to claim 8 , wherein each of the children is imaged. The mounting machine according to any one of claims 1 to 9 , wherein the cleaning device removes foreign matter adhering to a portion of each of the pair of stylus that comes into contact with the component.

Images