WO2018229910A1

WO2018229910A1 - Nozzle cleaning unit automatic exchange system

Info

Publication number: WO2018229910A1
Application number: PCT/JP2017/022002
Authority: WO
Inventors: 幹雄中島; 真治内藤
Original assignee: 株式会社Ｆｕｊｉ
Priority date: 2017-06-14
Filing date: 2017-06-14
Publication date: 2018-12-20
Also published as: JP6956179B2; JPWO2018229910A1

Abstract

This nozzle cleaning unit automatic exchange system that automatically exchanges a nozzle cleaning unit (81), which cleans a suction nozzle on a component mounting machine (12), is configured such that the nozzle cleaning unit can be set in a feeder setting section (24) of the component mounting machine so as to be exchangeable with a feeder (14). Further, this nozzle cleaning unit automatic exchange system comprises a stock section (71) for housing a plurality of feeders and nozzle cleaning units to be set in the feeder setting section of the component mounting machine, and an automatic replacement device (26) whereby a feeder to be replaced is removed from the feeder setting section and returned to the stock section, while a feeder specified by the production job is removed from the stock section and set in the feeder setting section. When the suction nozzle is to be cleaned, the nozzle cleaning unit is removed from the stock section and set in the feeder setting section by the automatic replacement device.

Description

Nozzle cleaning unit automatic replacement system

This specification discloses a technique related to an automatic nozzle cleaning unit replacement system that automatically replaces a nozzle cleaning unit that cleans a suction nozzle of a component mounting machine.

If foreign matter such as dust adheres to the suction nozzle of the component mounting machine, a component suction error (component suction error or component suction posture abnormality) will occur, or foreign matter will appear in the captured image of the part sucked by the suction nozzle. Cause an image processing error. Therefore, as described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2008-311549), when cleaning the suction nozzle, the operator sets the nozzle cleaning unit in the feeder set unit of the component mounting machine, There is one in which the suction nozzle is cleaned by this nozzle cleaning unit.

JP 2008-311549 A

Generally, a component mounting line for mounting a component on a circuit board to produce a component mounting board is configured by arranging a plurality of component mounting machines along a transport path for transporting the circuit board. In the configuration of 1, the worker who manages the production of the component mounting line must manually perform the operation of setting the nozzle cleaning unit in each feeder set portion of a plurality of component mounting machines in the component mounting line. There is a drawback that the amount of work of the worker increases.

Also, if a nozzle cleaning unit is set in the feeder set part of the component mounting machine, the number of feeders that can be set in the feeder set part is reduced accordingly, so the nozzle cleaning unit is set in the feeder set part immediately before cleaning the suction nozzle. Although it is desirable to take out the nozzle cleaning unit and replace it with the feeder immediately after the cleaning is completed, the operator manually performs the manual operation on all the component mounting machines in the component mounting line before and after the cleaning. It is very cumbersome to do with. In addition, there is a possibility that the component mounting machine for setting the nozzle cleaning unit may be mistaken due to an operator's work mistake or leave the nozzle cleaning unit without attaching / detaching the nozzle cleaning unit. There is also a possibility to do.

In addition, if the number of feeders required for production is not so large, production can be continued even if the nozzle cleaning unit is always set in the feeder set part of each component mounting machine on the component mounting line. However, it is necessary to prepare as many nozzle cleaning units as the number of all the component mounting machines in the component mounting line, and there is a disadvantage that the cost for preparing the nozzle cleaning units increases.

In order to solve the above-mentioned problem, a nozzle cleaning unit automatic replacement system for automatically replacing a nozzle cleaning unit for cleaning a suction nozzle of a component mounting machine, wherein the nozzle cleaning unit is provided with a feeder in a feeder set unit of the component mounting machine. A plurality of feeders to be set in the feeder set unit, a stock unit for storing the nozzle cleaning unit, a feeder to be replaced from the feeder set unit, and collected in the stock unit And an automatic changer that takes out a designated feeder from the stock part and sets it in the feeder set part. The automatic changer removes the nozzle cleaning unit from the stock part when cleaning the suction nozzle. Take it out and place it in the feeder set. It is intended.

In this configuration, the nozzle cleaning unit can be automatically replaced using an automatic replacement device that automatically replaces the feeder set in the feeder setting unit of the component mounting machine. There is no need to do it by work, and labor can be saved. Moreover, since one nozzle cleaning unit can be reused for a plurality of component mounting machines, the number of nozzle cleaning units to be prepared can be reduced, and the cost for preparing the nozzle cleaning unit can be reduced. Furthermore, when it becomes necessary to clean the suction nozzle of the component mounter, a nozzle cleaning unit is quickly set on the feeder set part of the component mounter by an automatic changer, and the nozzle cleaning unit is quickly moved after the cleaning is completed. The suction nozzle can be efficiently cleaned and the productivity can be prevented from being lowered, and the error of the component mounter due to the operator's mistake in attaching / detaching the nozzle cleaning unit can also be prevented. Can do. The stock unit may be provided in a component mounting machine, or may be installed in a component mounting line including the component mounting machine.

FIG. 1 is a perspective view showing a configuration of an entire component mounting line according to an embodiment. FIG. 2 is a perspective view schematically showing configurations of the automatic changer and the component mounter. FIG. 3 is a block diagram schematically showing the configuration of a component mounting line with an automatic changer. FIG. 4 is a perspective view showing a cassette type feeder. FIG. 5 is a perspective view showing a cassette type nozzle cleaning unit. FIG. 6 is a side view showing a schematic configuration of a main part of the nozzle cleaning unit when the brush is lowered to the retracted position. FIG. 7 is a side view showing a schematic configuration of a main part of the nozzle cleaning unit when the brush is raised to the cleaning position.

Hereinafter, an embodiment will be described.
First, the configuration of the component mounting line 10 will be described with reference to FIGS.

The component mounting line 10 is configured by arranging a plurality of component mounting machines 12 along the conveying direction (X direction) of the circuit board 11, and the circuit board 11 is soldered to the board loading side of the component mounting line 10. And a storage box 19 for storing a cassette type feeder 14 (see FIG. 4) and a cassette type nozzle cleaning unit 81 (see FIGS. 5 to 7). Yes.

As shown in FIG. 2, each component mounting machine 12 has suction nozzles for sucking and mounting the components supplied from two conveyors 13 for conveying the circuit board 11 and cassette type feeders 14 onto the circuit board 11. There are provided a mounting head 15 (not shown) that can be exchanged, a head moving device 16 that moves the mounting head 15 in the XY directions (left and right and front and rear directions), a display device 23 such as a liquid crystal display and a CRT, and the like. ing.

Each component mounting machine 12 of the component mounting line 10 conveys the circuit board 11 conveyed from the upstream component mounting machine 12 to a predetermined position by the conveyor 13 and uses the clamp mechanism (not shown) to move the circuit board 11. The component supplied from the cassette type feeder 14 is clamped by the suction nozzle of the mounting head 15 and moved from the suction position to the imaging position, and the component imaging camera ( (Not shown) to determine the amount of adsorption position deviation of the component, etc., correct the amount of adsorption position deviation, and mount the component on the circuit board 11 on the conveyor 13 to produce a component mounting board. .

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

Inside the cassette case 32, a tape feed mechanism 38 for feeding the component supply tape 33 pulled out from the tape reel 34 to the component suction position, and a top film 40 (also called a cover tape) from the component supply tape 33 before the component suction position. A top film peeling mechanism 39 for peeling and exposing the components in the component supply tape 33 is provided.

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

The top film peeling mechanism 39 includes a tape press 45 for peeling the top film 40 from the upper surface of the component supply tape 33 by pressing the component supply tape 33 before the component suction position, and the top film peeled by the tape press 45 The top film feed gear mechanism 47 that pulls 40 in the direction opposite to the tape feed direction and feeds it into the top film collecting section 46 at the top of the cassette case 32, and a motor 48 that drives the top film feed gear mechanism 47, etc. ing.

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

In the cassette case 32, a control device 52 for controlling the motor 43 of the tape feeding mechanism 38 and the motor 48 of the top film peeling mechanism 39 is provided. In addition, although not shown, the cassette case 32 is provided with a communication / power connector and a positioning pin connected to the communication / power connector on the component mounter 12 side. As a result, the cassette type feeder 14 is positioned and set on the feeder setting unit 24 of the component mounting machine 12 so that the communication / power supply connector of the cassette type feeder 14 is used for communication / power supply on the component mounting machine 12 side. It is designed to be connected to the connector. A connector for communication / power supply on the component mounter 12 side is provided for each slot on the feeder set unit 24.

Further, a feeder identification information recording unit (not shown) that records or stores a feeder ID (identification information of the feeder 14) is provided at a predetermined position of the cassette case 32. As the feeder identification information recording unit, for example, a code label in which the feeder ID is recorded with a barcode, a two-dimensional code, or the like may be used, or an electronic tag (RF tag, IC tag, radio wave tag) storing feeder ID data is used. , Also referred to as a wireless tag). Therefore, when the communication / power supply connector of the cassette type feeder 14 is connected to the communication / power supply connector on the component mounting machine 12 side, the control device 52 of the cassette type feeder 14 and the control device 20 of the component mounting machine 12 are connected. Communicates with each other, the control device 20 of the component mounting machine 12 acquires the feeder ID recorded or stored in the feeder identification information recording unit. Then, the control device 20 of the component mounting machine 12 can recognize which cassette type feeder 14 is set in which slot through communication with the control device 52 of the cassette type feeder 14.

Next, the configuration of the cassette type nozzle cleaning unit 81 will be described with reference to FIGS.
The cassette type nozzle cleaning unit 81 is configured to be set in the feeder set unit 24 of the component mounting machine 12 so as to be exchangeable with the cassette type feeder 14. The height dimension and depth dimension (Y direction dimension) of the nozzle cleaning unit 81 are substantially the same as the height dimension and depth dimension of the cassette type feeder 14, and the feeder setting unit 24 of the component mounting machine 12 is moved to. The attachment structure of the nozzle cleaning unit 81 is shared with the attachment structure of the feeder 14. In this way, the nozzle cleaning unit 81 can be attached and detached in the same procedure as the attachment and detachment of the feeder 14, and the nozzle cleaning unit 81 can be attached and detached easily. In addition, the width dimension (X direction dimension) of the nozzle cleaning unit 81 does not necessarily need to be the same as the width dimension of the feeder 14, and may be a width dimension across a plurality of slots of the feeder set unit 24. In short, it is sufficient that the nozzle cleaning unit 81 has a width dimension that can be set together with the feeder 14 in the feeder setting unit 24.

A communication / power supply connector 82 connected to a communication / power supply connector (not shown) on the component mounter 12 side is provided on the front end surface of the nozzle cleaning unit 81 (surface on the insertion side to the feeder set portion 24). By connecting the communication / power connector 82 of the nozzle cleaning unit 81 to the communication / power connector on the component mounter 12 side, power is supplied to the nozzle cleaning unit 81 from the component mounter 12 side. In addition, identification information (ID) of the nozzle cleaning unit 81, a control signal, and the like are transmitted and received between the control unit 83 of the nozzle cleaning unit 81 and the control device 20 of the component mounter 12. The control device 20 of the component mounter 12 can recognize which nozzle cleaning unit 81 is set in which slot through communication with the control unit 83 of the nozzle cleaning unit 81.

Positioning pins 84 and 85 are provided on the upper and lower sides of the communication / power connector 82 on the front end surface of the nozzle cleaning unit 81, and the positioning pins 84 and 85 are positioned in the positioning holes (see FIG. The nozzle cleaning unit 81 is positioned on the feeder set portion 24 by being fitted into the not shown.

A unit identification information recording unit (not shown) that records or stores a unit ID (identification information of the nozzle cleaning unit 81) is provided at a predetermined position of the nozzle cleaning unit 81. As this unit identification information recording unit, for example, a code label in which a unit ID is recorded by a bar code, a two-dimensional code, or the like may be used, or an electronic tag (RF tag, IC tag, radio wave tag) storing unit ID data is used. , Also referred to as a wireless tag).

The nozzle cleaning unit 81 is provided with a brush 86 for cleaning the suction nozzle of the component mounting machine 12 and an elevating device 87 for moving the brush 86 up and down. The brush 86 is mounted on the elevating table 88 of the elevating device 87. It has been. The hair constituting the brush 86 may be either artificially formed with resin or the like, or one formed with animal hair existing in nature. The brush 86 may be entirely formed of single-hard hairs, or may be formed using hairs having different hardnesses on the inner side and the outer side in order to enhance the cleaning effect. Further, in this embodiment, in order to enhance the cleaning effect, at least a part of the hair of the brush 86 is obliquely upward so that the hair of the brush 86 intersects the suction nozzle obliquely. In addition, the brush 86 can be replaced so that the brush 86 with worn or deteriorated hair tips can be replaced with a new brush 86 after long-term use, or the type of brush 86 can be replaced according to the type of suction nozzle to be cleaned. Anyway.

Further, in this embodiment, as shown in FIG. 6, the brush 86 is lowered and retracted into the nozzle cleaning unit 81, and the brush 86 protrudes upward from the nozzle cleaning unit 81 as shown in FIG. Thus, the brush 86 is configured to move up and down between a cleaning position for cleaning the suction nozzle. As a result, the brush 86 is lowered to the retracted position at times other than during cleaning (such as during automatic replacement of the nozzle cleaning unit 81 or during component suction operation of the component mounting machine 12), so that the nozzle cleaning unit 81 is automatically operated. It is possible to prevent the brush 86 from interfering with the suction nozzle or the like at the time of replacement or during the component suction operation of the component mounting machine 12, and the brush 86 does not get in the way.

Further, in the present embodiment, the type of the suction nozzle based on the identification information (ID) of the suction nozzle to be cleaned transmitted from the control device 20 of the component mounting machine 12 to the control unit 83 of the nozzle cleaning unit 81. In response to this, the height of the cleaning position is changed in a plurality of stages. The height of the cleaning position may be fixed, and the lowering stroke (Z-axis stroke) of the suction nozzle during cleaning may be changed according to the type of suction nozzle. The cleaning effect similar to changing the height of the cleaning position can be obtained.

An elevating device 87 that moves the brush 86 up and down serves as a drive source, a slide plate 91 having an elevating platform 88 attached via a support plate 89, a slide guide 92 that guides the slide direction of the slide plate 91 in the vertical direction. A gear mechanism 94 that converts the rotation of the motor 93 into a displacement in the vertical direction and transmits the displacement to the slide plate 91 is formed. The gear mechanism 94 is configured by meshing a rack 95 fixed to the slide plate 91 and a reduction gear 96 that transmits the rotation of the motor 93.

A position sensor 97 is provided as means for detecting the position of the brush 86 moved up and down by the elevating device 87. Accordingly, as shown in FIG. 7, when the brush 86 is raised to the cleaning position, the detected member 98 fixed to the slide plate 91 via the support member 99 comes into contact with or approaches the position sensor 97. Then, it is detected that the position sensor 97 is activated (for example, turned on) and the brush 86 is raised to the cleaning position. As shown in FIG. 6, when the brush 86 is lowered to the retracted position, the detected member 98 of the slide plate 91 is separated from the position sensor 97, so that the position sensor 97 is in an inoperative state (for example, an off state). Thus, it is detected that the brush 86 is lowered to the retracted position. The position sensor 97 may be a contact type or non-contact type sensor (or switch).

The motor 93 that drives the lifting device 87 includes an encoder (not shown) that outputs a pulse signal synchronized with the rotation, and the control unit 83 of the nozzle cleaning unit 81 counts the output pulses of the encoder. Then, while detecting the height position of the brush 86, the brush 86 is raised or lowered to the cleaning position or the retracted position. The count value of the encoder pulse is reset to the initial value (0) at the position (cleaning position) where the position sensor 97 is actuated (ON actuated), and the motor 93 is controlled using this position as the reference position for the elevation control.

The use method of the position sensor 97 is not limited to the above method, and the reference position where the position sensor 97 is turned on may not be the cleaning position. It may be used to confirm the upper limit position).

As shown in FIG. 1, on the front side of the component mounting line 10, an automatic changer 26 that sets and removes (automatically replaces) the cassette-type feeder 14 from the feeder set unit 24 of each component mounter 12 is installed. Has been. The automatic changer 26 also sets and removes (automatically changes) the cassette type nozzle cleaning unit 81 from the feeder set unit 24 of each component mounting machine 12. This automatic changer 26 is an identification that reads the feeder ID and the unit ID from the feeder identification information recording unit of the feeder 14 and the unit identification information recording unit of the nozzle cleaning unit 81 when the feeder 14 and the nozzle cleaning unit 81 are automatically exchanged. An information reading unit (not shown) is provided, and the feeder 14 and the nozzle cleaning unit 81 are identified based on the feeder ID and unit ID read by the identification information reading unit.

A stock unit 71 that temporarily stores a plurality of replacement feeders 14 and nozzle cleaning units 81 set in the feeder set unit 24 is provided below the feeder set unit 24 of each component mounting machine 12. The automatic changer 26 takes out the feeder 14 and nozzle cleaning unit 81 to be replaced from the feeder set unit 24 of each component mounting machine 12 and collects them in the stock unit 71, and designates them from the stock unit 71 with a production job (production program). The feeder 14 and the nozzle cleaning unit 81 thus taken out are taken out and set in the feeder setting section 24 of each component mounting machine 12. At this time, if the replacement feeder 14 and the nozzle cleaning unit 81 are not stored in the stock portion 71 of the component mounting machine 12, the automatic replacement device 26 sends the replacement feeder 14 from the storage 19 as will be described later. The nozzle cleaning unit 81 is received and moved to the component mounting machine 12, and the replacement feeder 14 and the nozzle cleaning unit 81 are automatically replaced.

The storage 19 is provided with a control device and a communication / power connector for each slot. The feeder 14 or the nozzle cleaning unit 81 is set in a slot provided in the storage 19 and the communication / power connector provided in the feeder 14 or the nozzle cleaning unit 81 and the communication / power supply on the storage 19 side. When the connector is connected, the control device 20 or the control unit 83 of the feeder 14 or the nozzle cleaning unit 81 communicates with the control device of the storage unit 19, so that the control unit of the storage unit 19 is connected to the feeder identification information recording unit or A feeder ID or unit ID is acquired from the unit identification information storage unit. Further, the control device of the storage 19 can recognize which feeder 14 or the nozzle cleaning unit 81 is set in which slot through communication with the control device 20 or the control unit 83. The control device of the storage 19 may be connected to the production management computer 70 via the network 28 so that they can communicate with each other.

On the front side of the component mounting line 10, a guide rail 74 that moves the automatic changer 26 in the left-right direction (X direction) along the arrangement of the component mounting machines 12 is provided so as to extend in the X direction throughout the component mounting line 10. The automatic changer 26 moves between the upstreammost storage 19 and the downstreammost component mounting machine 12 of the component mounting line 10. The automatic changer 26 takes out the feeder 14 and the nozzle cleaning unit 81 designated by the production job from the storage 19 and conveys them to the stock section 71 of the designated component mounter 12 or uses the used feeder 14 and nozzles. The cleaning unit 81 is taken out from the stock unit 71 and collected in the storage 19.

As shown in FIG. 3, the control device 20 of each component mounting machine 12 and the control device 27 of the automatic exchange device 26 of the component mounting line 10 are a production management computer 70 (management device) that manages the entire component mounting line 10. The production management computer 70 manages the operation of each component mounting machine 12 and the operation of the automatic exchange device 26 through a network 28 such as a wired LAN or a wireless LAN. . For example, information on which ID feeder 14 or nozzle cleaning unit 81 is set in which slot of the stock unit 71 of which component mounting machine 12 is communicated via the network 28 by the control device 27 of the automatic exchange device 26. It is managed by the production management computer 70 or the control device 20 of the component mounter 12.

Furthermore, the component mounting line 10 of the present embodiment includes a unit transport device 76 (see FIG. 1) that automatically travels between the work place where the worker works and the storage room 19. The replacement feeder 14 and the nozzle cleaning unit 81 are loaded on the transporting device 76 and the unit transporting device 76 transports the replacement feeder 14 and the nozzle cleaning unit 81 to the storage 19. In addition to reloading, the replaced feeder 14 and the replaced nozzle cleaning unit 81 collected in the storage 19 are placed on the unit transport device 76 and returned to the work place. In this way, the worker can replenish the replacement feeder 14 and nozzle cleaning unit 81 and maintain and repair the recovered replaced feeder 14 and nozzle cleaning unit 81 at a work place away from the storage 19. It can be done efficiently. The unit transporting device 76 is equipped with a unit replacement mechanism (not shown) for replacing the feeder 14 and the nozzle cleaning unit 81 with the storage 19.

The production management computer 70 communicates with the unit transport device 76 via a wireless LAN or the like, and also manages the operation of the unit transport device 76. In this embodiment, the work place where the worker works and the unit conveying device 76 are shared by a plurality of component mounting lines 10. In this way, the feeder 14 and the nozzle cleaning unit 81 for replacement of the plurality of component mounting lines 10 to the storage 19 are replenished, and the replaced feeder 14 and nozzles collected from the plurality of component mounting lines 10 are used. Maintenance and repair of the cleaning unit 81 can be performed by the same worker at a common work place, and it is not necessary to provide a work place or unit transporting device 76 for each component mounting line 10. A plurality of component mounting lines 10 can be installed in a compact manner, and the number of workers engaged in the management of the plurality of component mounting lines 10 can be reduced, thereby further saving labor.

The control device 20 and / or the production management computer 70 of each component mounting machine 12 serves as a monitoring device that monitors the cleaning implementation status (adhesion status of foreign matters such as dust) and production status of the suction nozzles of each component mounting device 12. The function is mounted, and the automatic changer 26 moves along the arrangement of a plurality of component mounting machines 12 on the component mounting line 10 based on the monitoring result of the monitoring device, and a nozzle cleaning unit between the component mounting machines 12 I use 81.

Specifically, the monitoring device monitors whether or not the suction nozzle of each component mounter 12 needs to be cleaned based on the operation data of each component mounter 12. At this time, as the operation data of each component mounting machine 12, the suction nozzle usage time, the number of times of component suction, the frequency of occurrence of component suction error, the component suction rate (component suction success rate or component suction failure rate), sucked to the suction nozzle It is only necessary to monitor whether or not the suction nozzle of each component mounter 12 needs to be cleaned using at least one of the occurrence frequency of component image processing errors or data correlated therewith. The frequency of occurrence of component suction error and image processing error may be, for example, the number of error occurrences per predetermined number of times (per predetermined time), or the number of consecutive error occurrences. Data indicating whether a suction error or an image processing error is likely to occur may be used.

Alternatively, the suction nozzle of each component mounting machine 12 is imaged by the component imaging camera during a period when the component suction / mounting operation is not performed, and the presence or absence of foreign matter such as dust attached to the suction nozzle is recognized by image processing. Then, it may be monitored whether or not the suction nozzle of each component mounting machine 12 needs to be cleaned.

When the monitoring device determines that the suction nozzle of any of the component mounting machines 12 needs to be cleaned based on the monitoring result, the nozzle cleaning unit 81 is set in the feeder set unit 24 of the component mounting machine 12. It is determined whether or not. As a result, when the monitoring device determines that the nozzle cleaning unit 81 is not set in the feeder setting unit 24 of the component mounting machine 12, the component mounting machine is instructed to the control device 27 of the automatic changer 26. A signal instructing to set the nozzle cleaning unit 81 in the 12 feeder setting sections 24 is output. As a result, the automatic changer 26 sets the nozzle cleaning unit 81 in the feeder setting unit 24 of the component mounter 12.

At this time, if there is no empty slot in the feeder set unit 24 of the component mounter 12, the automatic changer 26 can take out one of the plurality of feeders 14 set in the feeder set unit 24. It waits until it becomes a state, and when any one of the feeders 14 is ready to be taken out, the feeder 14 is taken out and the nozzle cleaning unit 81 is set. If the component mounter 12 is stopped due to an error, even if there is no empty slot in the feeder set unit 24 of the component mounter 12, the automatic changer 26 does not need to wait and immediately Any one of the feeders 14 set in the feeder setting unit 24 is taken out and the nozzle cleaning unit 81 is set. Information on the presence / absence and position of an empty slot is based on whether the control device 20 of the component mounting machine 12 communicates with the control device 20 of the component mounting machine 12 and the control device 20 or the control unit 83 of the feeder 14 or the nozzle cleaning unit 81. You may judge based on. Alternatively, if the feeder set unit 24 is provided with a sensor for detecting whether or not the feeder 14 or the nozzle cleaning unit 81 is mounted, the control device 20 of the component mounting machine can detect the empty slot based on the detection of the sensor. Presence and location may be determined.

Thereafter, the control device 20 of the component mounter 12 outputs a cleaning start signal to the control unit 83 of the nozzle cleaning unit 81 set in the feeder set unit 24. Thereby, the control unit 83 of the nozzle cleaning unit 81 energizes the motor 93 to operate the elevating mechanism 87, and as shown in FIG. 7, the brush 86 is raised from the retracted position to the cleaning position and stopped. At this time, based on the identification information of the suction nozzle to be cleaned, which is transmitted from the component mounting machine 12 control device 20 to the control unit 83 of the nozzle cleaning unit 81, the height of the cleaning position according to the type of the suction nozzle. To change.

On the other hand, the control device 20 of the component mounting machine 12 moves the suction nozzle to be cleaned to a position directly above the brush 86 of the nozzle cleaning unit 81 by a mounting head moving device (not shown), and then moves the suction nozzle. The entire portion from the tip (lower end) to the root of the suction nozzle is inserted into the brush 86 to clean the portion from the tip of the suction nozzle to the root. At this time, the suction nozzle may be reciprocated (vibrated) in the XY direction within the brush 86, or moved up and down or rotated to enhance the cleaning effect. Or you may comprise so that the brush 86 may be rotated at the time of cleaning.

Thereafter, the control device 20 of the component mounter 12 raises the suction nozzle to return to the original position when cleaning is completed, and outputs a cleaning end signal to the control unit 83 of the nozzle cleaning unit 81. As a result, the controller 83 of the nozzle cleaning unit 81 energizes the motor 93 to operate the lifting device 87, and as shown in FIG. 6, the brush 86 is lowered from the cleaning position to the retracted position and stopped. In this way, by lowering the brush 86 to the retracted position at the end of cleaning, the brush 86 interferes with the suction nozzle or the like during automatic replacement of the nozzle cleaning unit 81 or component suction operation of the component mounting machine 12. The brush 86 does not get in the way.

Further, the control device 20 or the production management computer 70 of the component mounting machine 12 that has finished cleaning the suction nozzles sends the nozzle cleaning unit from the feeder set unit 24 of the component mounting machine 12 to the control device 27 of the automatic changer 26. A signal instructing to take out 81 is output. Thereby, after the cleaning of the suction nozzle is completed, the automatic changer 26 takes out the nozzle cleaning unit 81 from the feeder set unit 24 of the component mounter 12 and collects it in the stock unit 71, and replaces it with the feeder as necessary. 14 is set in the feeder set unit 24.

Even if the nozzle cleaning unit 81 is not taken out from the feeder set portion 24 of the component mounting machine 12 immediately after the suction nozzle cleaning is completed, the production of the component mounting machine 12 is not hindered, and the nozzle cleaning unit 81 is installed. If it is not necessary to transport to another component mounting machine 12, the nozzle cleaning unit 81 continues to be set in the feeder setting unit 24 of the component mounting machine 12 for a while after the cleaning is completed, and the automatic changer 26 causes the feeder 14 to After waiting until a standby state in which automatic replacement operation is not performed, the nozzle cleaning unit 81 is taken out from the feeder set unit 24 of the component mounter 12 and collected in the stock unit 71 or transported to another component mounter 12. Anyway.

Further, when the automatic replacement instruction of the nozzle cleaning unit 81 and the automatic replacement instruction of the feeder 14 overlap during operation of each component mounting machine 12, the automatic replacement device 26 performs automatic replacement of the feeder 14 first. The nozzle cleaning unit 81 is automatically replaced. Although the automatic replacement of the feeder 14 may lead to a delay in production even if it is delayed a little, the automatic replacement of the nozzle cleaning unit 81 hardly causes a delay in production even if it is delayed a little. When the automatic replacement instruction 81 and the automatic replacement instruction of the feeder 14 overlap, the automatic replacement of the feeder 14 is given priority over the automatic replacement of the nozzle cleaning unit 81.

In the present embodiment described above, the nozzle cleaning unit 81 can also be automatically replaced by using the automatic replacement device 26 that automatically replaces the feeder 14 set in the feeder set unit 24 of the component mounting machine 12. It is not necessary for the operator to manually replace the unit 81, and labor can be saved. Moreover, since one nozzle cleaning unit 81 can be reused for a plurality of component mounting machines 12, the number of nozzle cleaning units 81 to be prepared can be reduced, and the cost for preparing the nozzle cleaning unit 81 is reduced. Can be reduced.

Furthermore, when it becomes necessary to clean the suction nozzle of the component mounting machine 12, the nozzle cleaning unit 81 is quickly set in the feeder setting unit 24 of the component mounting machine 12 by the automatic changer 26, and after the cleaning is finished, The nozzle cleaning unit 81 can be quickly taken out, the suction nozzle can be efficiently cleaned, productivity can be prevented, and component mounting due to an operator's mistake in attaching / detaching the nozzle cleaning unit 81 can be performed. An error stop of the machine 12 can also be prevented.

In this embodiment, the brush 86 of the nozzle cleaning unit 81 is moved up and down between the cleaning position and the retracted position, but it goes without saying that the brush 86 may be fixed at a fixed position.

In addition, the usable nozzle cleaning unit is not limited to a configuration using a brush. For example, a nozzle cleaning unit with a different cleaning method may be used, such as a configuration in which air is blown to the suction nozzle for cleaning. Anyway.

In addition, the present invention is not limited to the above-described embodiments. For example, the automatic replacement timing of the nozzle cleaning unit 81 can be changed as appropriate, the configuration of the component mounting line 10 and the automatic replacement device 26 can be changed, Needless to say, various modifications can be made without departing from the gist, such as a configuration in which 76 is omitted.

DESCRIPTION OF SYMBOLS 10 ... Component mounting line, 11 ... Circuit board, 12 ... Component mounting machine, 14 ... Cassette type feeder, 15 ... Mounting head, 16 ... Head moving device, 19 ... Storage, 20 ... Control device of component mounting machine (monitoring) Device), 24 ... feeder set unit, 26 ... automatic changer, 70 ... production management computer (monitoring device), 71 ... stock unit, 76 ... unit transport device, 81 ... cassette type nozzle cleaning unit, 86 ... brush

Claims

A nozzle cleaning unit automatic replacement system for automatically replacing a nozzle cleaning unit for cleaning a suction nozzle of a component mounting machine,
The nozzle cleaning unit is configured to be replaceable with a feeder in a feeder set portion of the component mounting machine,
A plurality of feeders to be set in the feeder set unit and a stock unit for storing the nozzle cleaning unit;
An automatic exchange device that takes out a feeder to be exchanged from the feeder set unit and collects it in the stock unit and takes out a designated feeder from the stock unit and sets it in the feeder set unit;
The automatic exchange device is a nozzle cleaning unit automatic exchange system that takes out the nozzle cleaning unit from the stock unit and sets it in the feeder set unit when cleaning the suction nozzle.
When the automatic cleaning device sets the nozzle cleaning unit in the feeder set unit during operation of the component mounting machine, if there is no empty slot in the feeder set unit, it is set in the feeder set unit. Waiting until any one of a plurality of feeders is ready to be removed, and at the time when any one of the feeders is ready to be removed, the feeder is taken out and the nozzle cleaning unit is set. The nozzle cleaning unit automatic replacement system according to 1.
When the automatic replacement instruction of the nozzle cleaning unit and the automatic replacement instruction of the feeder overlap during operation of the component mounting machine, the automatic replacement apparatus first performs automatic replacement of the feeder and then performs the nozzle cleaning. The nozzle cleaning unit automatic replacement system according to claim 1, wherein the unit is automatically replaced.
The height and depth of the nozzle cleaning unit are shared with the height and depth of the feeder,
The nozzle cleaning unit automatic replacement system according to any one of claims 1 to 3, wherein an attachment structure of the nozzle cleaning unit to the feeder set unit is made common with an attachment structure of the feeder.
The nozzle cleaning unit includes a brush for cleaning the suction nozzle and a lifting device for moving the brush up and down, and a cleaning position for cleaning the suction nozzle by the lifting device when cleaning the suction nozzle. The nozzle cleaning unit automatic replacement system according to any one of claims 1 to 4, wherein the brush is lowered from the cleaning position to a retracted position below the cleaning position after cleaning.
A plurality of the component mounting machines are arranged along a transport path for transporting the circuit board, and each component mounting machine is applied to a component mounting line for producing a component mounting board by mounting components on the circuit board,
The automatic changer moves along an array of the plurality of component mounters and automatically replaces the feeder and the nozzle cleaning unit with a feeder set unit of each of the component mounters. The nozzle cleaning unit automatic replacement system according to claim 5.
A monitoring device for monitoring the cleaning implementation status and production status of the suction nozzle of each component mounting machine,
The automatic changer moves along the arrangement of the plurality of component mounters based on a monitoring result of the monitoring device, and reuses the nozzle cleaning unit between the component mounters. Automatic nozzle cleaning unit replacement system.
The monitoring device monitors whether or not it is necessary to clean the suction nozzle of each component mounter based on the operation data of each component mounter,
The nozzle cleaning unit according to claim 7, wherein the automatic replacement device sets the nozzle cleaning unit in a feeder set portion of a component mounting machine that is determined to be required to clean the suction nozzle based on a monitoring result of the monitoring device. Automatic unit replacement system.
The monitoring device includes, as operation data of each component mounting machine, the usage time of the suction nozzle, the number of times of component suction, the frequency of occurrence of component suction error, the component suction rate, and the occurrence of an image processing error of the component sucked by the suction nozzle The nozzle cleaning unit automatic replacement system according to claim 8, wherein whether or not the suction nozzle of each component mounting machine needs to be cleaned is monitored based on at least one of the frequencies or data correlated therewith.