WO2018167880A1

WO2018167880A1 - Mounting machine

Info

Publication number: WO2018167880A1
Application number: PCT/JP2017/010462
Authority: WO
Inventors: 亜里沙川添
Original assignee: 株式会社Ｆｕｊｉ
Priority date: 2017-03-15
Filing date: 2017-03-15
Publication date: 2018-09-20
Also published as: JP6801083B2; JPWO2018167880A1

Abstract

The objective of the invention is to reduce the amount of maintenance operations such as probe cleaning by an operator. In this mounting machine, cleaning of at least one among a pair of probes is carried out automatically. The need for the operator to carry out an operation, such as cleaning at least one among the pair of probes, is reduced. As a result, the amount of maintenance operations by the operator can be reduced.

Description

Mounting machine

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

Patent Documents

1 and 2 describe a mounting machine having a pair of measuring elements for measuring electrical characteristics of parts. Among them, the mounting machine described in Patent Document 1 includes a holding base for holding a component, a stator and a movable element, a pair of measuring elements capable of measuring electrical characteristics across the component, And an air supply device for supplying air to the end face. In this mounting machine, air is supplied to the upper part of the part which contacts the component of the end surface of a needle | mover with an air supply apparatus. The air flows downward along the end face, and can drop the components 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 that are provided so as to protrude from the holding table and that measure electrical characteristics by contacting components. In this mounting machine, when the number of times of measurement of the electrical characteristics of the parts reaches the set number of times of measurement, an instruction for maintenance work is issued. Thereby, maintenance work such as cleaning of the electrode pair is performed by the worker.

International Publication No. 2017/009987 Pamphlet International Publication No. 2014/155657 Pamphlet

Overview

Challenges to be solved

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

Means, actions and effects for solving the problem

In the mounting machine according to the present disclosure, at least one of the pair of measuring elements is automatically cleaned. The operator is less likely to perform work such as cleaning at least one of the pair of measuring elements. As a result, the operator's maintenance work can be reduced.

It is a perspective view of the mounting machine concerning Example 1 of this indication. It is a figure which shows the periphery of the suction nozzle of the mounting head contained in the said mounting machine. It is a perspective view of the measuring apparatus contained in the said mounting machine. It is sectional drawing of the principal part of the said measuring apparatus. It is a figure which shows the air cylinder periphery of the said measuring apparatus. It is a figure which shows the periphery of the control apparatus of the said mounting machine. It is a flowchart showing the LCR measurement program memorize | stored in the memory | storage part of the said control apparatus. It is a flowchart showing a part (cleaning routine) of the LCR measurement program. (FIG. 9A) It is a figure which shows the initial state of the said measuring apparatus. (FIG. 9B) It is a figure which shows the clamped state of the said measuring apparatus. (FIG. 9C) It is a figure which shows the measurement state of the said measuring apparatus. FIG. 9D is a diagram showing a discarding state of the measuring device. It is an example of the resistance value measured in the said measuring apparatus in the state in which the opposing surface of the measuring element became dirty. It is a flowchart showing the cleaning routine different from the said cleaning routine. It is a flowchart showing another LCR measurement program memorize | stored in the memory | storage part of the said control apparatus. It is a flowchart showing the measurement frequency count program memorize | stored in the memory | storage part of the control apparatus of the mounting machine which concerns on Example 2 of this indication. It is a flowchart showing the said cleaning routine. It is a flowchart showing the measurement time measurement program memorize | stored in the said memory | storage part. It is sectional drawing which shows the principal part of the measuring apparatus of the mounting machine which concerns on Example 3 of this indication. It is sectional drawing which shows the principal part of the measuring apparatus of the mounting machine which concerns on Example 4 of this indication. It is a front view of the principal part of the said measuring apparatus. It is a perspective view of the measuring device of the mounting machine concerning Example 5 of this indication. It is a flowchart showing the LCR measurement program memorize | stored in the memory | storage part of the control apparatus of the said mounting machine. It is a flowchart showing a part (cleaning routine) of the LCR measurement program.

Embodiment

Hereinafter, a mounting machine including a measuring apparatus according to an embodiment of the present disclosure will be described in detail based on the drawings.

The mounting machine shown in FIG. 1 mounts components on a circuit board, and includes a main body 2, a circuit board transport and holding device 4, a component supply device 6, a head moving device 8, a measuring device 26, and the like.
The circuit board transport and holding device 4 transports and holds a circuit board P (hereinafter abbreviated as “substrate P”). In FIG. 1, the transport direction of the substrate P is 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 vertical 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 to be mounted on the board P, and includes a plurality of tape feeders 14 and the like. The head moving device 8 moves a 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 supply of negative pressure (suction), releases the component s by supply of positive pressure (air), and is mounted on the substrate P. As shown in FIG. 2, the suction nozzle 18 includes an air passage 19 that opens at the tip, and the air passage 19 includes a negative pressure source 20 that includes a vacuum pump and the like, and a positive pressure source 22 that includes an air source and the like. They are connected via

electromagnetic valves

20v and 22v, respectively. By controlling these

solenoid valves

20v and 22v, the presence or absence of negative pressure supply and the presence or absence of positive pressure supply can be switched. A camera 23 (see FIG. 6) as an imaging device is attached to the slider. The camera 23 is a mark camera that images 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.

Moreover, the code | symbol 24 shows a camera. The camera 24 is fixedly provided on the main body 2 and images 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 board P. Reference numeral 25 denotes a nozzle station. The nozzle station accommodates a plurality of suction nozzles including a nozzle formed of an insulating material. Reference numeral 26 denotes a measuring apparatus. The measuring device 26 measures the electrical characteristics of the component s. The electrical characteristics of the component s include L (inductance), C (capacitance), R (resistance), Z ′ (impedance), and the like, and one or more of these are measured by the measuring device 26.

The measuring device 26 is provided in the main body of the circuit board transporting and holding device 4 through the trash box 27. The waste bin 27 and the measuring device 26 are connected by a waste passage 28. The part s whose electrical characteristics have been measured is accommodated in the trash box 27 through the waste passage 28.

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

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

The holding table 32 is held by the holding table main body 46 so as to be integrally movable. The holding table 32 includes a groove portion 45 formed on the upper surface thereof as a component holding portion. The part s is placed in the groove 45 and held.

The holding base 32 is made of a conductive material such as an aluminum alloy or a stainless material, and is electrically connected to the main body 30 via a member formed of a plurality of conductive materials (internal conduction and May be called). Further, since the main body 30 is grounded (grounded), the holding table 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 body 46, the stopper 80, the main body 30, the fastening portion 47, and the like are formed of a conductive material. Therefore, the holding table 32 is grounded via the holding table 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 50 prevents the air from diffusing and prevents the parts s and foreign matters that have fallen due to the ejection of air from being scattered. The cover part 50 includes a pair of

cover plate parts

52 and 54 provided on both sides of the groove part 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 able to approach and separate from each other. The stator 34 is fixed to the main body 30 via a stator holder 55. The mover 36 is held by a mover holding body 56 at one end (reverse side end), and can move integrally with the mover holding body 56. Further, the other end portion (the end portion on the forward side) of the mover 36 is provided with an engaging portion 36 a that can engage with the groove portion 45.

The stator 34 and the movable element 36 constitute a pair of measuring elements 37. The stator 34 and the mover 36 have opposing

surfaces

34f and 36f that face each other, and the component s is gripped by the pair of opposing

surfaces

34f and 36f. That is, the component s, the pair of measuring elements 37, the LCR detection unit 42, the power supply device not shown in the figure, and the like in a state where the electrode portions at both ends of the component s and the pair of measuring elements 37 are in contact with each other. An electrical circuit 58 is formed. While a voltage is applied between the stator 34 and the mover 36, a current flowing between them is detected by the LCR detector 42, and based on the applied voltage, the flowing current, etc. The electrical characteristics of the part s are acquired. The LCR detection unit 42 is not limited to a detection unit that detects L, C, and R, and can detect one or more physical quantities representing electrical characteristics such as L, C, R, and Z ′.

Reference numerals

58a and 58b in FIGS. 3 and 4 are connecting portions of the pair of measuring elements 37 to the electric circuit 58.

The measurement 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,

electromagnetic valve devices

69 and 72, an electromagnetic 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 60 s extends in the y direction so as to incline downward toward the mover 36, and the opening 60 a faces the facing surface 36 f of the mover 36. The air ejected from the opening 60a of the ejection passage 60s includes a portion (gripping portion) R that frequently grips the part s on the facing surface 36f of the mover 36, and is supplied to a portion RK wider than the portion R. The In the present 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 to 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 opposed surface 36a of the mover 36. ing.
An air source 68 and the like are connected to the air passage 60 via an ionizer 62. The ionizer 62 ionizes air by causing corona discharge, and supplies the ionized air. The air source 68 can be the same as the positive pressure source 22 described above.

The holding table moving device 40 moves the holding table 32 and includes an air cylinder 64 as a drive source. As shown in FIG. 5, in the air cylinder 64, the interior of the housing is partitioned into two

air chambers

64 a and 64 b by a piston, and the holding base body 46 is connected to the piston rod 66 of the piston. An electromagnetic 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 electromagnetic valve device 69 includes a plurality of electromagnetic valves, and the holding base 32 is moved forward and backward by the control of the electromagnetic valve device 69. When the holding table 32 moves forward, 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 moves forward.

The mover moving device 41 is for moving 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 an electromagnetic valve device 72. The mover 36 is moved forward and backward by the control of the electromagnetic 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 moves backward.

Further, the air source 68 and the air passage 60 are connected by bypassing the

cylinders

64 and 70 via the electromagnetic valve 73. Under the control of the electromagnetic 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 passage 68 communicated with the air passage 60 and cut off from the

cylinders

64 and 70. Switchable. The

cylinders

64 and 70, the air passage 60, and the air source 68 can be switched between a communication state and a shut-off state under the control of the

electromagnetic 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 holder 32 and the mover holder are held. A pair of

guide rods

76 and 77 extending in the y direction are provided between the body 56 and the body 56. The

guide rods

74, 75, 76, 77 allow the stator 34 and the mover 36 to move relative to each other in the y direction, and the holding base 32 and the mover 36 move relative to each other in the y direction. The
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 body 46), and the stopper 80 approaches the stator 34 and the holding base 32 (holding base body 46). It defines the limit.

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, the substrate transfer holding device 4, the component supply device 6, and the head moving device 8 each include a drive circuit 104. In addition, the holding table moving device 40, the

electromagnetic valve devices

69 and 72 of the mover moving device 41, the

electromagnetic valves

20v, 22v, and 73 are connected. Further, an LCR detection unit 42, a display 116, a mover position sensor 118, a holding stand position sensor 120, a nozzle height sensor 122 for detecting the height of the nozzle 18, a mark camera 23, a camera 24, and the like are connected. The storage unit 112 stores a plurality of programs and tables such as the LCR measurement program represented by the flowchart of FIG. Further, time is measured by a timer 124 provided in the controller 102. In this embodiment, the

solenoid valve devices

69 and 72 are controlled using the outputs of the holding stand position sensor 120 and the mover position sensor 118, the time measured by the timer 124, etc., and the holding stand 32 and the mover 36 move forward. , Retreated.

Hereinafter, the operation of the mounting machine will be described.
When a command for measuring the electrical characteristics of the part s is issued, such as when a new tape feeder 14 is set or the tape feeder 14 is replaced, the electrical of the part s held by the tape feeder 14 is output. Characteristics are measured. In addition, a measured value that is a value of the measured electrical characteristic may be compared with a standard value of the component, and it may be determined whether or not these values substantially match. In that case, the result of comparing the measured value with the standard value can be displayed on the display 116.

Further, due to the measurement of the electrical characteristics of the part s, foreign matters such as plating of the part s adhere to the opposing

surfaces

34f and 36f of the stator 34 and the mover 36 and become dirty. If foreign matter such as plating adheres to the facing

surfaces

34f and 36f, the electrical characteristics of the component s cannot be measured accurately. For example, as shown in FIG. 10, when the electrical characteristics of the component s are measured in a state where foreign matter is attached, even if the component s is normal, the measured value greatly deviates from the specified value A. And the variation becomes large. Therefore, in the present embodiment, the opposing

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 opposing

surfaces

34f and 36f, respectively. And the foreign material adhering to the opposing

surfaces

34f and 36f determined that cleaning is required is removed.

The electrical characteristics of the component s are measured by executing the LCR measurement program represented by 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 advanced end position. Since the holding table 32 is in contact with the stopper 80, it is in a state of being grounded by internal conduction 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, for example, in S2, the component s held by 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 suction nozzle 18 is lowered and the electromagnetic valve 22v is switched to open, so that the component s is held in the groove 45.

In S3, after the suction nozzle 18 is raised to the rising end, the movable element 36 is moved in the direction indicated by the arrow F in FIG. The mover 36 is advanced along the groove 45 of the holding table 32, and the component s is clamped by the facing surface 34 f of the stator 34 and the facing surface 36 f of the mover 36. Further, the opposing

surfaces

34f and 36f are in contact with the electrode portions at both ends of the component s. This state is the clamped state shown in FIG. 9B.
In S4, the holding base 32 is moved 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 moved backward 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 after the component s is placed on the holding base 32 has reached the static elimination time. The charge charged in the component s is removed through the holding table 32. The time required for static elimination of the component s is determined by the characteristics and size of the component s and is determined in advance. When the static elimination time has elapsed 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 movable element 36 is retracted to the retracted end position by the control of the

electromagnetic valve devices

72 and 69, and retracted until the holding base 32 comes into contact with the stopper 82. . The front end surface of the holding table 32 is positioned substantially the same as or behind the facing surface 36f of the mover 36, and the holding table 32 does not exist below the pair of facing

surfaces

34f and 36f. This state is the discard state shown in FIG. 9D. The component s falls downward and is accommodated in the trash box 27 through the opening 30a and the disposal passage 28. Further, when the mover 36 moves backward, air is blown out from the opening 60a of the jet passage 60s and hits the portion RK of the mover 36. In addition, the cover 50 covers the space between the pair of opposing

surfaces

34f and 36f from the x direction. As a result, the component s can be satisfactorily dropped from the facing surface 36f, and scattering of the component s can be prevented.

After the component s is discarded, a cleaning routine, which will be described later, is executed in S9. Thereafter, in S10, the holding base 32 is advanced to a forward end position where it abuts against the stopper 80 under the control of the electromagnetic valve device 69. The initial state shown in FIG. Further, when the holding table 32 moves forward, air is supplied from the opening 60a of the ejection passage 60s to the facing surface 36f of the mover 36. For this reason, it is possible to remove the charge on the facing surface 36f of the mover 36.

An example of the cleaning routine of S9 is represented by the flowchart of FIG.
In S21, the mark camera 23 is moved to a position where the opposed surface 34f of the stator 34 can be imaged and a position where the opposed surface 36f of the movable element 36 can be imaged, respectively. Is imaged. Note that when the opposing

surfaces

34f and 36f are imaged by the mark camera 23, the mark camera 23 can be inclined with respect to the z axis so that the lens faces the opposing

surfaces

34f and 36f. Further, depending on the field of view of the mark camera 23, it may be possible to image the opposing

surfaces

34f, 36f at a time. In this case, the mark camera 23 is moved to a position where both the opposing

surfaces

34f and 36f can be imaged.

In S22, each of the captured images of the opposing

surfaces

34f and 36f is processed, whereby the necessity of cleaning is determined for each of the opposing

surfaces

34f and 36f. For example, cleaning is performed when foreign matter adheres to the opposing

surfaces

34f and 36f, or when foreign matter adheres to the opposing

surfaces

34f and 36f to such an extent that the measurement accuracy of the electrical characteristics of the component is reduced. Can be determined to be necessary.

If it is determined that at least one of the opposing

surfaces

34f and 36f needs to be cleaned, the determination in S22 is YES, and cleaning is performed in S23. For example, when it is determined that both the facing

surfaces

34f and 36f need to be cleaned, the suction nozzle 18 moves in order upward from the facing

surfaces

34f and 36f (end portions of the stator 34 and the mover 36). Are respectively moved down. The electromagnetic valve 22v is opened, and air is blown and supplied from the tip of the suction nozzle 18 toward the ends of the stator 34 and the mover 36. Air flows along the opposing

surfaces

34f and 36f. Further, under the control of the electromagnetic valve 73, an air source 68 is communicated with the air passage 60, and air is ejected toward the facing surface 36f and supplied. When the electromagnetic valve 73 is controlled, the

air cylinders

64 and 70, the air source 68, and the air passage 60 can be blocked by the

electromagnetic valve devices

69 and 72. As described above, in cleaning, both the supply of air from the suction nozzle 18 to the opposing

surfaces

34f and 36f and the supply of air from the air supply device 59 to the opposing surface 36f are performed. Is not indispensable, and at least one of them may be performed. Moreover, these may be performed in parallel or in order, and the order may be any first.

By performing the cleaning, it is possible to drop the foreign matter adhering to the facing

surfaces

34f and 36f. Further, the foreign matter peeled off from at least one of the facing

surfaces

34f and 36f falls and is stored in the trash box 27 through the disposal passage 28.
As shown in FIG. 9D, in the discarded state, the space between the stator 34 and the mover 36 is covered by the cover 50, so that the air is circulated inside the cover 50 in a spiral shape. For this reason, the foreign matter adhering to the facing surface 34f is easily removed by the air ejected from the air ejection portion 60b toward the facing surface 36f.

Thereafter, the process returns to S21, and the opposing

surfaces

34f and 36f are respectively imaged by the mark camera 23. In S22, it is determined whether or not each of the opposing

surfaces

34f and 36f needs to be cleaned. When it is determined that at least one of the facing

surfaces

34f and 36f needs to be cleaned, cleaning is performed in S23. Hereinafter, while it is determined that at least one of the facing

surfaces

34f and 36f needs to be cleaned, S21 to S23 are repeatedly executed. However, when cleaning of both the facing

surfaces

34f and 36f is not necessary, The determination in S22 is NO, and in S24, an end process such as closing the electromagnetic valve 22v and closing the electromagnetic valve 73 is performed.

In addition, when the mounting head 16 is moved to the measuring device 26 for imaging and cleaning, the mounting head 16 is moved to the measuring device 26 for measuring the electrical characteristics of the component s, and imaging and cleaning are also performed. is there. In any case, the mounting head 16 is separated from the measuring device 26 after cleaning.

As described above, in this embodiment, at least one of the facing

surfaces

34f and 36f is automatically cleaned by at least one of the air supply device 59 and the suction nozzle 18. As a result, the maintenance work of the operator can be reduced. In the cleaning routine, the opposing

surfaces

34f and 36f are imaged by the mark camera 23, and cleaning is performed until it is determined that cleaning is not necessary. As a result, it is possible to satisfactorily remove foreign matters 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 components.

In this embodiment, the suction nozzle 18, the air passage 19, the positive pressure source 22, the electromagnetic valve 22v and the like constitute a movable air supply device, 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 configured by a portion that stores the cleaning routine represented by the flowchart of FIG. 8 of the control device 100, a portion that executes the cleaning routine, and the necessity of cleaning is determined by the portion that stores S22, the portion that executes, etc. A determination unit is configured.

In the cleaning routine in S9, the cleaning can be performed without determining whether the opposing

surfaces

34f and 36f need to be cleaned. In this embodiment, a cleaning routine represented by the flowchart of FIG. 11 is executed in S9. Every time the electrical characteristics of the component s are measured, cleaning is performed in S31. Air is supplied to the

opposed surfaces

34f and 36f by the suction nozzle 18 for a set time, and air is supplied to the opposed surface 36f by the air supply device 59 for the set time. The supply of air by the suction nozzle 18 and the supply of air by the air supply device 59 may be performed in parallel or sequentially.

As described above, in this embodiment, air is supplied to the facing

surfaces

34f and 36f every time the electrical characteristics of the component s are measured. For this reason, it is possible to prevent foreign matters 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 the present embodiment, the cleaning control device is configured by a portion that stores S9 (a cleaning routine represented by the flowchart of FIG. 11) of the control device 100, a portion that executes the portion, and the like.

Further, in this embodiment, imaging is performed before measurement of the electrical characteristics of the component s, and it is possible to determine whether or not cleaning is necessary and perform cleaning after the measurement. 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, the facing

surfaces

34f and 36f are imaged by the mark camera 23 before the mover 36 is advanced, that is, in S2a (in an initial state). And after execution of S8 (discarded state), a 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 opposing

surfaces

34f and 36f captured in the initial state, whether or not each of the opposing

surfaces

34f and 36f needs to be cleaned is determined in the discarding state, and at least the opposing

surfaces

34f and 36f are determined. When it is determined that one side needs to be cleaned, cleaning is performed. This embodiment is effective when it takes a long time to process an image captured by the mark camera 23. Further, when it is determined that cleaning is not necessary, it is not necessary to move the suction nozzle 18 to the measuring device 26. Therefore, useless movement of the mounting head 16 can be reduced, and power consumption can be reduced. be able to.

In the present embodiment, the cleaning control device is configured by the portions that store S2a and S9 ′ in the flowchart of FIG. 12 and the portions that execute them, and the necessity of cleaning is determined by the portions that store S22 and the portions that execute them. The part is composed.

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

In this embodiment, when the number of times of measurement of the component s by the pair of measuring elements 37 reaches the set number of times of measurement, it is determined that both the facing

surfaces

34f and 36f need to be cleaned. About the other part of a mounting machine, it is the same as that of the structure of the mounting machine of Example 1, and the LCR measurement program represented with the flowchart of FIG. 7 is performed.

The number counting program shown in 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 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 number counter, has reached the set measurement number Cth. Before the count value reaches the set measurement number Cth, the number of measurements by the number counter is determined. Counting continues. When the number of times of measurement C reaches the set number of times of measurement Cth, the cleaning necessity 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 while the number of measurements is counted 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 accumulated and counted.

An example of the cleaning routine is shown in the flowchart of FIG.
The cleaning routine is executed (in the discarding state) in S9 of the LCR measurement program, as in the above embodiment.
In S51, it is determined whether or not the cleaning necessity flag is ON. If the determination is YES, in S52, the suction nozzle 18 is moved and lowered above the opposing

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 the control of the electromagnetic valve 22v. Further, air is ejected from the air passage 60 toward the facing surface 36f during the set time by the control of the electromagnetic valve 73 and the like. Thereafter, in S53, an end process such as turning off the cleaning necessity flag is performed.

As described above, in this embodiment, air is supplied to each of the facing

surfaces

34f and 36f for a set time in cleaning. For this reason, there are cases where the foreign matter adhering to the facing

surfaces

34f, 36f may not be removed satisfactorily. In that case, cleaning is performed by the operator. However, even in this case, since air is supplied to the opposing

surfaces

34f and 36f in advance, the cleaning work of the opposing

surfaces

34f and 36f by the operator can be reduced.

Note that the number of times of measurement is actually counted every time a voltage is applied between the stator 34 and the mover 36, or every time an electrical characteristic is obtained by the LCR detector 42. It can also be done. In the present embodiment, the measurement number counting unit is configured by a part for storing the measurement number counting program represented by the flowchart of FIG. 13 of the control device 100, a part for executing the program, and the like, and the measurement number counting unit, S9 (FIG. 14). The cleaning control device is configured by a part that stores a cleaning routine (represented by a flowchart), a part that executes the routine, and the like.

In the present embodiment, when the measurement time, which is the total time for measuring the electrical characteristics of the component s by the pair of measuring elements 37, reaches the set measurement time, both the facing

surfaces

34f and 36f need to be cleaned. It is determined that Other parts of the mounting machine are the same as those 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 time intervals. In S61, it is determined whether or not the measurement state is set. That is, it is determined whether or not the component s is gripped by the stator 34 and the mover 36 and a 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 requirement 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, measurement is started from the stored measurement time. Moreover, the cleaning routine represented by the flowchart of FIG. 14 can be executed.

It should be noted that the total time that the component s is gripped by the stator 34 and the movable element 36 can also be referred to as a broad measurement time. In this case, the time in the clamp state of FIG. 9B and the measurement state of FIG. 9C is measured.

In the present embodiment, a part for storing the measurement time measurement program represented by the flowchart of FIG. 15 of the control device 100, a part to be executed, a part for storing S9 (cleaning routine represented by the flowchart of FIG. 14), and execution The cleaning control device is configured by the parts to be performed.

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

In addition to the air ejection part 60b, the air supply device 150 includes an air ejection part 154 provided on the mover 152 as shown in FIG. The air ejection part 154 includes an ejection passage 154s and an opening 154a. The ejection passage 154s extends in the y direction so as to incline downward as it approaches the stator 34, 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 an air passage 156. Further, the air ejected from the opening 154a is supplied to the portion RM that frequently holds the component s on the facing surface 34f of the stator 34.
In the present 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. Thereby, the foreign material adhering to the opposing

surfaces

34f and 36f can be removed.

In the present embodiment, the measuring device includes a wiper device 170 as a cleaning device, as shown in FIGS. Other parts of the mounting machine are the same as those of the mounting machine of the first embodiment, and the LCR measurement program represented by the flowchart of FIG. 7 or 12 is executed. In S9, the cleaning routine shown in the flowchart of FIG. 8, FIG. 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 from 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 integrally with the rotary shaft 174, an electric motor 180 connected to the rotary shaft 174, and the like. . A wiper 178 such as a nonwoven fabric is provided at the tip of the rod 176. The rotating shaft 174 is rotated with the rotation of the electric motor 180, and the wiper 178 is rotated. In the present 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, the rod 176 is located in the x and y planes, and the wiper 178 is in a non-acting position spaced from the facing surface 36f of the mover 36, as indicated by the solid line in FIG. When cleaning is performed, as indicated by a two-dot chain line in FIG. 18, the rod 176 extends in the vertical direction, and the wiper 178 is in an operating position in contact with the facing surface 36 f. At this operating position, the wiper 178 is reciprocated by the electric motor 180 as indicated by the arrow. Thereby, the foreign material adhering to the opposing surface 36f can be removed. A brush or 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 present mounting machine stores and executes the LCR measurement program represented by the flowchart of FIG. Other parts of the mounting machine are the same as those of the mounting machine of the first embodiment.
The measurement apparatus 200 includes a plurality of measurement tables 202, and each of the plurality of measurement tables 202 is provided with a pair or two pairs of electrode pairs 204 protruding from the measurement table 202, respectively. Further, the measuring device 200 is attached to the trash box 27 via the measuring table holder 206.
Then, in a state where 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 electrodes 204, and the electrical characteristics are measured. Further, after the electrical characteristics are measured, the component s is discarded into the trash box 27.
In the present embodiment, an insulating nozzle formed 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 the measurement command is issued, the component s supplied by the component supply device 6 is picked up by the suction nozzle 18 and brought into contact with the pair of electrodes 204 in S72. In S73, the electrical characteristics are measured in a state where the component s is held by the suction nozzle 18. Thereafter, the suction nozzle 18 that holds the component s is separated from the electrode pair 204. In S74, the mark camera 23 is moved to positions where the electrodes constituting the electrode pair 204 can be imaged, and the electrodes are imaged at the respective positions. In S75, the part s is discarded into the trash box 27. In S76, a cleaning routine is executed, and in S77, end processing is performed. In addition, when the mark camera 23 can image a pair of electrode pairs 204 simultaneously, the pair of electrode pairs 204 are moved to a position where they can be imaged at the same time and imaged.

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

In the present embodiment, the cleaning control device is configured to store, execute, etc. the portions S74 and 76 (cleaning routine represented by the flowchart of FIG. 21) of the LCR measurement program represented by the flowchart of FIG. The part which memorize | stores, the part which memorize | stores S81, the part to perform, etc. comprise a cleaning necessity judgment part. Note that the imaging in S74 can also be executed in a cleaning routine. Further, the steps S74 and 81 are not essential.

As described above, in each of the above embodiments, the case where the cleaning is performed in relation to the measurement of the electrical characteristics of the component s has been described. However, 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 and 200 without being held by the suction nozzle 18 so that cleaning can be performed.
In addition, the present disclosure can be implemented in various modifications and improvements based on the knowledge of those skilled in the art, such as two or more of the above-described embodiments can be implemented in combination with each other. .

8: head moving device 16: mounting head 8: suction nozzle 19: mark camera 22: positive pressure source 22v: solenoid valve 26: measuring device 30: main body 30a: opening 34: stator 36:

mover

34f, 36f: facing surface 59: Air supply device 60: Air passage 60b: Air ejection portion 60s: Injection passage 68: Air source 73: Solenoid valve 100: Control device 150: Air supply device 154: Air ejection portion 154s: Injection passage 170: Wiper device 200: Measuring device 204: Electrode pair

Claimable aspects

The following paragraphs describe the claimable aspects.
(1) A mounting machine that picks up a component supplied by a component supply device and mounts it on a circuit board,
A pair of measuring elements for measuring the electrical characteristics of the component by contacting the component; and
A cleaning device for cleaning at least one of the pair of measuring elements;
A mounting machine including a cleaning control device that operates the cleaning device at a predetermined timing.
For example, when one of the pair of measuring elements is cleaned by the cleaning device, the operator is less required to clean one of the measuring elements, thereby reducing the maintenance work such as cleaning. can do.
Also, the cleaning can be performed in connection with the measurement of the electrical characteristics of the part or not in connection with the measurement of the electrical characteristics of the part.

(2) The mounting machine according to (1), wherein the cleaning control device operates the cleaning device every time the electrical characteristics of the component are measured by the pair of measuring elements.
For example, cleaning can be performed periodically.

(3) The cleaning control device includes a measurement number counting unit that counts the number of times of measurement of the electrical characteristics of the component by the pair of measuring elements, and the measurement number counted by the measurement number counting unit is predetermined. The mounting machine according to item (1), wherein the cleaning device is activated when the set number of measurement times is reached.

(4) The cleaning control device includes a timer that measures a measurement time that is a total time required for the pair of measuring elements to measure the electrical characteristics of the component, and the measurement time measured by the timer The mounting machine according to (1) or (3), wherein the cleaning device is activated when a predetermined measurement time is reached.
The measurement time can be the total time during which a pair of probe contacts the component and voltage is applied, or the total time during which the pair of probe contacts the component.

(5) The mounting machine includes an imaging device capable of imaging the pair of measuring elements,
The cleaning control device includes a cleaning necessity determining unit that determines whether or not cleaning is required for each of the pair of measuring elements based on an image captured by the imaging device, and the cleaning necessity determining unit One of the items (1), (3), and (4), which activates the cleaning device when it is determined that at least one of the pair of measuring elements needs to be cleaned. The mounting machine described in 1.
The imaging device may be fixedly provided on the mounting machine or may be movably provided. Further, the imaging device can be attached in a posture in which the optical axis of the lens is parallel to the vertical direction, or can be attached so as to be tiltable with respect to the vertical direction.

(6) The mounting machine includes a component holding device that holds the component, and a moving device that moves the component holding device,
The imaging device is movable by the moving device;
The cleaning control device moves the imaging device to the moving device to a position where the imaging device can capture each of the pair of measuring elements, and the pair of measurements to the imaging device at each position. The mounting machine according to item (5), wherein each child is imaged.
When two imaging elements of a pair of measuring elements can be imaged by one imaging by the imaging apparatus depending on the field of view of the lens of the imaging apparatus, the distance between the measuring elements, etc., the two measuring elements are separately imaged. It may be necessary to do so. In the former case, the imaging apparatus is moved to a position where both of the pair of measuring elements can be imaged, and images both of the pair of measuring elements. In the latter case, the imaging device is moved to a position corresponding to one of the pair of measuring elements to image one measuring element, and then moved to a position corresponding to the other of the pair of measuring elements. And image the other probe.

(7) The cleaning device 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 measuring elements that contacts the component. Mounting machine.
Part plating or the like tends to adhere to the part of the probe that contacts the part. Therefore, plating or the like corresponds to the foreign matter.

(8) The mounting machine according to any one of (1) to (7), wherein the cleaning device includes an air supply device that supplies air to the at least one probe.
Foreign matter adhering to the probe can be removed by supplying air. The air supply device blows air toward the part that contacts the part of the probe and supplies it, or air is supplied to the probe so that the air flows along the part that contacts the part of the probe. Or can be supplied.

(9) 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 an electromagnetic valve provided in the air passage. The mounting machine described in 1.

(10) The mounting machine includes a component holding device that holds the component, and a moving device that moves 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 probe, and at each position, the positive pressure is transferred from the suction nozzle to the at least one probe. To supply
The mounting machine according to (8) or (9), wherein the suction nozzle is a component of the air supply device.
The suction nozzle includes an air passage formed therein, and a positive pressure source and a negative pressure source are selectively communicated with the air passage.

(11) The pair of measuring elements measure 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 after the component is released from the suction nozzle, the suction nozzle corresponds to each of the at least one probe. Each of the positions is moved, and at each position, the positive pressure is supplied from the suction nozzle to each of the at least one measuring element. Mounting machine.
During the measurement before and during the measurement of the electrical characteristics of the component, the suction nozzle is in a state of holding the component, and therefore cannot be cleaned. Therefore, it is desirable that the suction nozzle performs cleaning after measuring the electrical characteristics, releasing the part, and before starting the measurement of the electrical characteristics of the next part. Further, there are cases where the parts after measurement are discarded in the trash box, used for mounting on the substrate, or the like.

(12) The pair of measuring elements are provided so as to be able to approach and separate from each other, grasp the part by being brought close to each other, measure the electrical characteristics of the part, and be separated from each other to make the part Is to release
The item (8) to (10), wherein the air supply device includes at least one air ejection portion that is provided on the at least one measuring element and ejects air from one of the pair of measuring elements toward the other. The mounting machine according to any one of the above.
An air ejection part may be provided in both of a pair of measuring elements, or may be provided in any one.

(13) Item (12), in which the cleaning control device causes the at least one air ejection portion to eject the air toward the other measuring element in a state where the pair of measuring elements are separated from each other. The mounting machine described in 1.

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

(15) The mounting machine according to (14), wherein the cleaning control device causes the cleaning device to clean the at least one probe in the discarding state.

(16) The mounting machine includes an imaging device capable of imaging the pair of measuring elements,
In the initial state, the cleaning control device causes the imaging device to capture the pair of measuring elements, and in the discarding state, each of the pair of measuring elements is based on an image captured by the imaging device. The mounting machine according to (14) or (15), wherein the cleaning device determines whether or not the cleaning is necessary and causes the cleaning device to perform cleaning of at least one measuring element that is determined to be required to be cleaned.
The necessity of cleaning can be determined in a discarded state.

(17) The mounting machine includes an imaging device capable of imaging the pair of measuring elements,
The cleaning control device, in the discarding state, causes the imaging device to take an image of the pair of measuring elements, determines whether or not cleaning is required for each of the pair of measuring elements based on the captured image, and The mounting machine according to (14) or (15), wherein the cleaning device performs cleaning of at least one measuring element that is determined to require cleaning.

Claims

A mounting machine that picks up a component supplied by a component supply device and mounts it on a circuit board,
A pair of measuring elements for measuring the electrical characteristics of the component by contacting the component; and
A cleaning device for cleaning at least one of the pair of measuring elements;
A mounting machine including a cleaning control device that operates the cleaning device at a predetermined timing.
The mounting machine according to claim 1, wherein the cleaning control device operates the cleaning device every time the electrical characteristics of the parts are measured by the pair of measuring elements.
The cleaning control device includes a measurement number counting unit that counts the number of times the electrical characteristics of the part are measured by the pair of measuring elements, and the measurement number counted by the measurement number counting unit is set in advance. The mounting machine according to claim 1, wherein when the number of times is reached, the cleaning device is operated.
The cleaning control device includes a timer that measures a measurement time that is a cumulative time required for measuring the electrical characteristics of the component by the pair of measuring elements, and the measurement time measured by the timer reaches a set measurement time. The mounting machine according to claim 1, wherein the cleaning device is operated when the cleaning device is operated.
The mounting machine includes an imaging device capable of imaging the pair of measuring elements,
The cleaning control device includes a cleaning necessity determination unit that determines whether or not cleaning is required for each of the pair of measuring elements based on an image captured by the imaging device, and the cleaning necessity determination unit determines whether the cleaning is necessary or not. The mounting machine according to claim 1, wherein the cleaning device is operated when it is determined that the cleaning is necessary for at least one measuring element.
The mounting machine includes a component holding device that holds the component, and a moving device that moves the component holding device,
The imaging device is movable by the moving device;
The cleaning control device moves the imaging device to the moving device to a position where the imaging device can capture each of the pair of measuring elements, and the pair of measurements to the imaging device at each position. The mounting machine according to claim 5, wherein each child is imaged.
The mounting machine according to any one of claims 1 to 6, wherein the cleaning device removes foreign matter adhering to a portion of each of the pair of measuring elements that contacts the component.
The mounting machine according to any one of claims 1 to 7, wherein the cleaning device includes an air supply device that supplies air to the at least one probe.
The mounting machine includes a component holding device that holds the component, and a moving device that moves 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 measuring element, and at each position, the positive pressure is transferred from the suction nozzle to the at least one of the at least one of the measurement heads. Each of which is supplied to the probe,
The mounting machine according to claim 8, wherein the suction nozzle is a component of the air supply device.
The pair of measuring elements measure 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 after the component is released from the suction nozzle, the suction nozzle corresponds to each of the at least one probe. The mounting machine according to claim 9, wherein each of the positions is moved, and the positive pressure is supplied from the suction nozzle to each of the at least one measuring element at each position.
The pair of measuring elements are provided so as to be able to approach and separate from each other, grasp the parts by being brought close to each other, measure the electrical characteristics of the parts, and release the parts by being separated from each other And
The said air supply apparatus is provided in at least one of a pair of said measuring element, and contains at least 1 air ejection part which ejects air toward the other from one side of said pair of measuring element. Mounting machine.
The mounting machine according to claim 11, wherein the cleaning control device causes the at least one air ejection portion to eject air toward the other measuring element in a state where the pair of measuring elements are separated from each other. .