JP4889120B2 - Nozzle cleaning system, nozzle cleaning unit, and nozzle cleaning method - Google Patents

Description

  The present invention relates to a nozzle cleaning system, a nozzle cleaning unit, and a nozzle cleaning method for cleaning a component suction nozzle of a component mounting machine with a brush.

  In recent years, electronic components have been miniaturized, so if dust adheres to the tip of a component suction nozzle of a component mounter, even if it is a minute image of the component that has been attracted to the nozzle May cause processing errors.

Therefore, as described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2003-179399), it has been proposed to mount a cleaning unit including a cleaning member (brush) for cleaning the tip of a nozzle on a component mounting machine. Yes.
JP 2003-179399 A

  The thing of the said patent document 1 can clean only the front-end | tip of a nozzle, since it is what cleans the front-end | tip (lower end) of a nozzle with the cleaning member from right below, The part other than the front-end | tip of a nozzle, especially the part by the side of a root It is difficult to remove dust adhering to the surface cleanly.

  Even if only the tip of the nozzle is cleaned as in the above-mentioned Patent Document 1, even if the electronic component can be normally sucked to the tip of the nozzle, the sucking component is photographed from below with a camera, and the kind and sucking of the sucking component When recognizing the posture, dust adhering to the part other than the tip of the nozzle is photographed together with the suction part. As a result, the dust is mistakenly recognized as a part of the suction part, and the type and suction of the suction part There is a possibility of misjudging the posture. The problem of misrecognition of suction parts due to dust adhering to parts other than the tip of the nozzle is more likely to occur as the suction parts become smaller. Then, it is an important technical problem to be solved immediately.

  The present invention has been made in view of such circumstances. Accordingly, the object of the present invention is to provide a nozzle cleaning system, a nozzle cleaning unit, and a nozzle cleaning method that can sufficiently clean portions other than the tip of the nozzle. There is.

  In order to achieve the above-mentioned object, the invention according to claims 1 and 9 is directed to cleaning the brush for the component suction nozzle of the component mounting machine with a linear object (hereinafter referred to as “ The tip of the nozzle is rotated by rotating the nozzle in a state in which the hair of the brush is in contact with the portion from the tip of the nozzle to the base at an angle from below. The part from the root to the root is cleaned. Here, the brush hairs (linear objects) may be either artificially formed with resin or the like, or those formed with animal hair existing in nature.

  In the above-mentioned Patent Document 1, since the brush for cleaning the nozzle is provided so that the hair is straight upward, the tip of the nozzle can be cleaned by sufficiently contacting the hair of the brush. In contrast, brush hairs extending substantially parallel to this cannot be brought into sufficient contact. For this reason, it is difficult to cleanly remove dust adhering to the peripheral side surface of the nozzle.

  In contrast, according to the present invention, the brush is provided so that the bristles are inclined upward, and the bristles of the brush are brought into contact with the portion from the tip of the nozzle to the root from diagonally below. The bristles of the brush can be uniformly brought into contact with the portion from the tip to the root, and by rotating the nozzle in this state, dust adhering to the portion from the tip to the root of the nozzle can be removed cleanly. As a result, it is possible to solve the problem of erroneous recognition of suction parts due to dust adhering to portions other than the tip of the conventional nozzle.

  In this case, the brush may be formed as a whole with single hardness bristles, and in order to further enhance the cleaning effect, the bristles are different in hardness between the inside and the outside as in claim 2. It may be formed. For example, the inner hair of the brush may be softer than the outer hair. Thereby, the effect which improves the contact property of the brush hair with respect to nozzles with different nozzle diameters can be expected.

  Further, the shape of the brush tip side may be formed flat, or may be formed in a convex curve shape in order to enhance the contact property of the tip with respect to the nozzle. Alternatively, as described in claim 3, it may be formed in a step shape by changing the height of the hair tip for each portion having different hair hardness. Even if it does in this way, the effect which improves the contact property of the hair tip with respect to nozzles from which a nozzle diameter differs can be expected.

  In addition, when applying the present invention to a component mounting machine equipped with a plurality of types of nozzles having different nozzle diameters, etc., as in claim 4, comprising a plurality of brushes formed using hairs having different hardness, A brush to be used for cleaning may be selected from the plurality of brushes according to the type of nozzle to be cleaned. In this way, even when cleaning any nozzle from the multiple types of nozzles mounted on the component mounter, select the bristle brush with the hardness that best fits the nozzle diameter, etc. from the multiple brushes And can be cleaned cleanly regardless of the type of nozzle.

  Alternatively, as in claim 5, a plurality of brushes having different tip end area (size) are provided, and a brush used for cleaning is selected from the plurality of brushes according to the type of nozzle to be cleaned. You may do it. In this way, as in the case of claim 4, even when cleaning any nozzle from a plurality of types of nozzles having different nozzle diameters and the like equipped in the component mounting machine, A brush having a size most suitable for the nozzle diameter or the like can be selected and cleaned, and the nozzle can be cleaned cleanly regardless of the type of nozzle.

  The present invention may be configured such that a brush is attached to an appropriate position of the component mounting machine, or as a nozzle cleaning unit that is detachably set to the component mounting machine, as in claim 6. . In general, in consideration of the fact that the component mounter is provided with a feeder set base having a plurality of slots for setting a plurality of feeders for supplying electronic components, the empty slot ( It is preferable that the nozzle cleaning unit is detachably set in a slot where no feeder is set. In this way, since the nozzle cleaning unit can be set using the feeder set base of the component mounter, there is no need to provide a set stand dedicated to the nozzle cleaning unit in the component mounter, and the conventional component mounter However, there is an advantage that the nozzle cleaning unit can be set without modification.

  In the present invention, the position of the brush may be fixed at a fixed position. However, for example, when the brush protrudes in the movement path of the nozzle during the mounting operation of the component mounting machine, the brush becomes an obstacle. As a countermeasure against this, as in claim 7, a configuration may be provided in which the brush is moved up and down between a cleaning position for cleaning the nozzle and a retracted position below it. In this way, the nozzle contacts the brush by lowering the brush to the retracted position at times other than cleaning (when mounting the component mounter or attaching / detaching the nozzle cleaning unit, etc.). There is no need to get in the way of the brush.

  In this case, as in claim 8, it is preferable to provide a work error preventing means for preventing the nozzle cleaning unit from being set on the component mounter while the brush is raised to the cleaning position. In this way, when the operator sets the nozzle cleaning unit on the component mounting machine, it is possible to prevent an operation error in which the brush is erroneously set while being raised to the cleaning position.

  Further, as in claim 9, the height of the cleaning position may be changed according to the type of nozzle to be cleaned. If it does in this way, according to the kind of nozzle, the contact area of the bristle of the brush with respect to a nozzle can be changed, or a contact location can be changed, and it can clean cleanly irrespective of the kind of nozzle.

Hereinafter, an embodiment embodying the best mode for carrying out the present invention will be described.
First, the structure of the nozzle cleaning unit 11 is demonstrated based on FIG.1 and FIG.2.
Here, FIG. 1 is a schematic configuration diagram of a main part of the nozzle cleaning unit 11 showing a state when the brush 16 is raised to the cleaning position, and FIG. 2 is a state when the brush 16 is lowered to the retracted position. It is a schematic block diagram of the principal part of the nozzle cleaning unit 11 which shows.

  The nozzle cleaning unit 11 is detachably set in an empty slot of a feeder set base of a component mounter (not shown). Therefore, the set structure of the nozzle cleaning unit 11 with respect to the component mounting machine is the same as that of the feeder. A plurality of slots for setting a plurality of feeders are formed on the feeder set base of the component mounting machine.

  A communication connector 12 that is connected to a communication connector (not shown) of the feeder set base is provided on the front end surface of the nozzle cleaning unit 11 (the surface on the insertion side to the feeder set base). By connecting the connector 12 to the communication connector of the feeder set base, power is supplied to the nozzle cleaning unit 11 from the component mounting machine side, and between the control unit 13 of the nozzle cleaning unit 11 and the control unit of the component mounting machine. Identification information (ID) of the brush 16, a control signal, and the like are transmitted and received.

  Positioning pins 14 and 15 are respectively provided on the upper and lower sides of the communication connector 12 on the front end surface of the nozzle cleaning unit 11, and the positioning pins 14 and 15 are fitted into the positioning holes of the feeder set base. The nozzle cleaning unit 11 is positioned on the feeder set base.

  In the nozzle cleaning unit 11, a brush 16 is provided in an inclined shape so that a linear object (hereinafter referred to as “hair”) constituting the brush 16 is inclined upward. Here, the hair (linear object) of the brush 16 may be either artificially formed with a resin or the like, or one formed with animal hair existing in nature.

  The brush 16 is replaceably mounted on a lifting platform 18 of a lifting mechanism 17 (lifting means), and as shown in FIG. 1, the brush 16 protrudes upward from the nozzle cleaning unit 11 so that a nozzle 19 (FIG. 3) is installed. As shown in FIG. 2, the brush 16 descends and moves up and down between the cleaning position for cleaning and the retracted position for retracting into the nozzle cleaning unit 11. Furthermore, in the present embodiment, based on the identification information (ID) of the nozzle 19 to be cleaned, which is transmitted from the control unit of the component mounting machine to the control unit 13 of the nozzle cleaning unit 11, it corresponds to the type of the nozzle 19. The height of the cleaning position is changed in multiple stages.

  In this case, the elevating mechanism 17 converts the rotation of the slide plate 21 to which the elevating platform 18 is attached, the slide guide 22 for guiding the slide direction of the slide plate 21 in the vertical direction, and the motor 23 into the vertical displacement. The gear mechanism 24 is configured to transmit to the slide plate 21. The gear mechanism 24 is configured by meshing a rack 25 fixed to the slide plate 21 and a reduction gear 26 that transmits the rotation of the motor 23.

  A position sensor 27 is provided as means for detecting the position of the brush 16 that is lifted and lowered by the lifting mechanism 17, and is fixed to the slide plate 21 when the brush 16 is raised to the cleaning position as shown in FIG. When the detected member 28 comes into contact with or approaches the position sensor 27, it is detected that the position sensor 27 is activated (for example, turned on) and the brush 16 is raised to the cleaning position. As shown in FIG. 2, when the brush 16 is lowered to the retracted position, the detected member 28 of the slide plate 21 is separated from the position sensor 27, so that the position sensor 27 is in an inoperative state (for example, an off state). Thus, it is detected that the brush 16 is lowered to the retracted position. The position sensor 27 may be a contact type or non-contact type sensor (or switch).

  The motor 23 that drives the lifting mechanism 17 includes an encoder (not shown) that outputs a pulse signal synchronized with the rotation thereof, and the control unit 13 of the nozzle cleaning unit 11 counts the output pulses of the encoder. Then, while detecting the height position of the brush 16, the brush 16 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 27 is actuated (ON actuated), and the motor 23 is controlled using this position as the reference position for the lift control.

  The use method of the position sensor 27 is not limited to the above method, and the reference position where the position sensor 27 is turned on may not be the cleaning position. For example, the assembly position of the brush 16 or the like (the upper limit position of the lifting range) ) May be used to confirm.

  Further, in this embodiment, in order to prevent the nozzle cleaning unit 11 from being set on the feeder set base of the component mounting machine while the brush 16 remains in the cleaning position, the operation error prevention mechanism 31 (operation error prevention) Means). This work error prevention mechanism 31 includes a lever 33 provided at the lower portion of the nozzle cleaning unit 11 so as to be pivotable in the vertical direction via a pivot shaft 32, and a tip portion of the lever 33 below the nozzle cleaning unit 11. A spring member 34 that pivots and biases the lever 33 in a protruding direction (clockwise direction in FIGS. 1 and 2), and a pressing member that is fixed to a portion of the slide plate 21 that is positioned directly above the lever 33. 35.

  As shown in FIG. 1, when the brush 16 is raised to the cleaning position, the pressing member 35 moves away from the lever 33, and the tip of the lever 33 is moved below the nozzle cleaning unit 11 by the spring force of the spring member 34. The nozzle cleaning unit 11 is prohibited from being set on the feeder set base of the component mounting machine. On the other hand, as shown in FIG. 2, when the brush 16 is lowered to the retracted position, the pressing member 35 comes into contact with the lever 33 and pushes it down to rotate the lever 33 counterclockwise. By retracting the tip of 33 into the nozzle cleaning unit 11, the nozzle cleaning unit 11 can be set on the feeder set base of the component mounting machine.

  The brush 16 attached to the nozzle cleaning unit 11 may be formed as a whole with single hardness bristles, or with bristles having different hardness on the inside and outside in order to enhance the cleaning effect. May be.

  For example, in the configuration example (part 1) of the brush 16 shown in FIG. 4, the hair is formed with three kinds of hair, the outer peripheral portion A is formed with the hardest hair, and the central portion C is formed with the softest hair. Part B is formed of hair of intermediate hardness. One brush 16 may be formed of two or four or more kinds of bristle, or the bristle hardness may be continuously increased from the center of the brush 16 to the outer peripheral side.

  Moreover, in the structural example (the 2) of the brush 16 of FIG. 5, the one brush 16 is comprised combining several brush block 16a-16c. Each of the brush blocks 16a to 16c may be formed of single-hard hairs, and the outer peripheral part A, the intermediate part B, and the central part C are formed of different-hardness hairs as in FIG. May be. Each of the brush blocks 16a to 16c may be individually replaceable depending on the worn / deteriorated state of the hair.

  The shape of the brush 16 may be a rectangular shape as shown in FIGS. 4 and 5, or may be a circular shape, an elliptical shape, or an oval shape as in the configuration example (No. 3) shown in FIG. 6, the outer peripheral portion A, the intermediate portion B, and the central portion C of the brush 16 may be formed of bristles of different hardness, as a matter of course. You may form with the hair of hardness.

  Further, the shape of the brush 16 on the hair end side may be formed flat, or may be formed in a convex curve shape in order to improve the contact property of the hair tip to the nozzle 19.

  Alternatively, as in the configuration example (No. 4) shown in FIGS. 7 to 9, the height of the hair tips may be changed for each of the portions D, E, and F having different hair hardnesses to form steps. . 7 to 9, the central portion D is formed with the softest hair to increase the height of the hair tip, and the outer portion F is formed with the hardest hair to reduce the height of the hair tip. The intermediate portion E is formed of hair having an intermediate hardness, and the height of the hair ends is set to an intermediate height. As shown in FIG. 9, the brush 16 is inclined in a direction parallel to the step portions D, E, and F having different bristle hardness.

  In the configuration example (part 4) shown in FIGS. 7 to 9, the height of the cleaning position is relatively changed according to the type (nozzle diameter, etc.) of the nozzle 19 to be cleaned, so that the type of the nozzle 19 is changed. Accordingly, the contact area of the brush 16 with the nozzle 19 is changed. For adjusting the height of the cleaning position, the height position of the brush 16 may be changed by the elevating mechanism 17, or the lowering stroke (Z-axis stroke) of the nozzle 19 during cleaning may be changed. In this case, the hard hair of the outer portion F of the brush 16 is in contact with the large diameter nozzle, the soft hair of the central portion D of the brush 16 is in contact with the small diameter nozzle, and the middle diameter of the brush 16 is in contact with the medium diameter nozzle. The intermediate hair of part E contacts. Thereby, it can clean neatly regardless of the kind of nozzle 19.

  When cleaning the nozzle 19, the operator sets the nozzle cleaning unit 11 in an empty slot of the feeder set base of the component mounting machine, and connects the communication connector 12 of the nozzle cleaning unit 11 to the communication connector of the feeder set base. . The setting operation of the nozzle cleaning unit 11 may be performed at any time during the operation or stop of the component mounting machine.

  In this way, when the nozzle cleaning unit 11 is set in the component mounting machine, power is supplied from the component mounting machine side to the nozzle cleaning unit 11, and the control unit of the component mounting machine and the control unit of the nozzle cleaning unit 11 are also supplied. 13, the identification information of the nozzle 19 to be cleaned, the identification information of the brush 16, the control signal, and the like are transmitted and received.

  Thereafter, the control unit of the component mounting machine outputs a cleaning start signal to the control unit 13 of the nozzle cleaning unit 11 when determining that the nozzle 19 needs to be cleaned during operation. Thereby, the control unit 13 of the nozzle cleaning unit 11 energizes the motor 23 to operate the lifting mechanism 17 and raises the brush 16 from the retracted position to the cleaning position to stop it. At this time, based on the identification information of the nozzle 19 to be cleaned transmitted from the control unit of the component mounting machine to the control unit 13 of the nozzle cleaning unit 11, the height of the cleaning position is set according to the type of the nozzle 19. Change.

  On the other hand, the controller of the component mounting machine moves the nozzle 19 to a position directly above the brush 16 of the nozzle cleaning unit 11 as shown in FIG. 3A, and further, as shown in FIG. The nozzle 19 is lowered and the entire part from the tip (lower end) to the base of the nozzle 19 is inserted into the brush 16. Thereby, it will be in the state which the hair of the brush 16 contacted to the whole part from the front-end | tip of the nozzle 19 to the base from diagonally downward. Thereafter, the control unit of the component mounting machine rotates the nozzle 19 to clean the portion from the tip of the nozzle 19 to the base. At the time of cleaning, in addition to the rotation operation of the nozzle 19, the operation of reciprocating the nozzle 19 in the XY direction in the brush 16 is performed in combination, or the operation of moving the nozzle 19 up and down in the brush 16 is combined. May be executed.

  Thereafter, the control unit of the component mounting machine stops the rotation operation of the nozzle 19 at the end of cleaning, raises the nozzle 19 and returns it to the original position, and notifies the control unit 13 of the nozzle cleaning unit 11 of the cleaning end signal. Is output. Thereby, the control unit 13 of the nozzle cleaning unit 11 energizes the motor 23 to operate the elevating mechanism 17 and lowers the brush 16 from the cleaning position to the retracted position and stops it. Thus, by lowering the brush 16 to the retracted position at the end of cleaning, the nozzle 19 is prevented from coming into contact with the brush 16 during the mounting operation of the component mounting machine or when the nozzle cleaning unit 11 is attached or detached (the brush 16 is Do n’t get in the way).

  In the present embodiment described above, the brush 16 is provided to be inclined so that the bristles are obliquely upward, and the bristles of the brush 16 are brought into contact with the portion from the tip of the nozzle 19 to the base when the nozzle 19 is cleaned. As a result, the bristles of the brush 16 can be brought into contact with the entire portion from the tip of the nozzle 19 to the base, and the nozzle 19 is rotated in this state to adhere to the portion from the tip of the nozzle 19 to the root. Dust can be removed cleanly. As a result, it is possible to solve the problem of erroneous recognition of suction parts due to dust adhering to portions other than the tip of the conventional nozzle 19.

Moreover, in this embodiment, since the nozzle cleaning unit 11 incorporating the brush 16 is detachably set in the empty slot of the feeder set base of the component mounter, the set stand dedicated to the nozzle cleaning unit 11 is mounted on the component mounter. There is an advantage that the nozzle cleaning unit can be set as it is without modifying the conventional component mounting machine.
However, in the present invention, the brush may be attached to an appropriate position other than the feeder set base of the component mounting machine.

Further, in this embodiment, since the lifting mechanism 17 is provided to raise and lower the brush 16 between the cleaning position for cleaning the nozzle 19 and the retracted position below it, it is not used during cleaning (component mounting machine) In the mounting operation or when the nozzle cleaning unit is attached / detached, the brush 16 is lowered to the retracted position so that the nozzle 19 does not contact the brush 16 and the brush 16 does not get in the way. .
In addition, when installing a brush in appropriate positions other than the feeder set stand of a component mounting machine, you may make it fix the position of a brush to a fixed position.

  Further, in this embodiment, the operation error prevention mechanism 31 that prevents the nozzle cleaning unit 11 from being set on the feeder set base of the component mounting machine is provided in the state where the brush 16 is raised to the cleaning position. When an operator sets the nozzle cleaning unit 11 on the component mounting machine, it is possible to prevent a mistake in setting the brush 16 in the state where the brush 16 is raised to the cleaning position by mistake, and the nozzle and the brush 16 interfere with each other at the time of setting. Can be prevented.

  In addition, in this embodiment, the height of the cleaning position is changed according to the type of the nozzle 19 to be cleaned, so that the contact area of the hair of the brush 16 with respect to the nozzle 19 is changed according to the type of the nozzle 19. The nozzle 19 can be cleaned cleanly regardless of the type of the nozzle 19. The height of the cleaning position may be adjusted by changing the height position of the brush 16 by the lifting mechanism 17 or by changing the lowering stroke (Z-axis stroke) of the nozzle 19 during cleaning.

  In the present invention, only one nozzle cleaning unit 11 may be set on the component mounting machine, but a plurality of nozzle cleaning units 11 may be set on the component mounting machine. As described above, when a plurality of nozzle cleaning units 11 are set in the component mounting machine, the hardness of the hair of the brush 16 is made different for each nozzle cleaning unit 11, and according to the type of the nozzle 19 to be cleaned. The nozzle cleaning unit 11 having the bristle brush 16 having a hardness suitable for cleaning the nozzle 19 may be selected from the plurality of nozzle cleaning units 11. In this way, even when any nozzle 19 is cleaned from among a plurality of types of nozzles 19 equipped in the component mounting machine, the hair having the hardness most suitable for the nozzle diameter or the like is selected from the plurality of brushes 16. The nozzle cleaning unit 11 having the brush 16 can be selected and cleaned, and the nozzle 19 can be cleaned cleanly regardless of the type of the nozzle 19.

  Alternatively, a plurality of brushes having different tip end area (size) may be provided, and a brush used for cleaning may be selected from the plurality of brushes according to the type of nozzle 19 to be cleaned. In this way, even when cleaning any nozzle 19 from a plurality of types of nozzles 19 with different nozzle diameters, etc., equipped in the component mounting machine, the size most suitable for the nozzle diameter, etc. from among the plurality of brushes The brush 19 can be selected and cleaned, and the nozzle 19 can be cleaned cleanly regardless of the type of the nozzle 19.

It is a schematic block diagram of the principal part of the nozzle cleaning unit which shows a state when raising a brush to the cleaning position in one Example of this invention. It is a schematic block diagram of the principal part of the nozzle cleaning unit which shows a state when a brush is lowered | hung to a retracted position. (A) is a figure which shows a state when moving a nozzle to the position right above a brush, (b) is the state which lowered | hung the nozzle and inserted the whole part from the front-end | tip of a nozzle to a root in a brush. FIG. It is an expansion perspective view of the brush upper part explaining the structural example (the 1) of a brush. It is an expansion perspective view of the brush upper part explaining the structural example (the 2) of a brush. It is an expansion perspective view of the brush upper part explaining the structural example (the 3) of a brush. It is an expansion perspective view of the brush upper part explaining the structural example (the 4) of a brush. It is an enlarged side view of the brush upper part explaining the structural example (the 4) of a brush. It is an enlarged front view of the brush upper part explaining the structural example (the 4) of a brush.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Nozzle cleaning unit, 12 ... Communication connector, 13 ... Control part, 16 ... Brush, 17 ... Lifting mechanism (lifting means), 19 ... Nozzle, 23 ... Motor, 24 ... Gear mechanism, 27 ... Position sensor, 31 ... Work Miss prevention mechanism (work mistake prevention means)

Claims (10)

In a nozzle cleaning system that uses a brush to clean the component suction nozzle of the component mounting machine,
The brush is provided so that the bristles are inclined upward so that the linear objects (hereinafter referred to as “hairs”) constituting the brush come into contact with the portion from the tip of the nozzle to the base obliquely from below.
A nozzle cleaning system for cleaning a portion from the tip of the nozzle to the base by rotating the nozzle in a state where the brush hair is in contact with the portion from the tip to the base of the nozzle from obliquely below. .   The nozzle cleaning system according to claim 1, wherein the brush is formed using bristles having different hardnesses on the inner side and the outer side.   3. The nozzle cleaning system according to claim 2, wherein the shape of the brush on the hair tip side is formed in a step shape by changing the height of the hair tip for each portion having different hair hardness. It has a plurality of brushes formed using hairs with different hardness,
The nozzle cleaning system according to any one of claims 1 to 3, wherein a brush used for cleaning is selected from the plurality of brushes according to a type of nozzle to be cleaned. It has a plurality of brushes with different areas on the tip side,
The nozzle cleaning system according to any one of claims 1 to 4, wherein a brush used for cleaning is selected from the plurality of brushes according to a type of nozzle to be cleaned. A nozzle cleaning unit that is detachably set to a component mounting machine,
A brush for rotating and cleaning a component suction nozzle of the component mounting machine;
The brush is characterized in that the bristles extend diagonally upward so that a linear object (hereinafter referred to as “hair”) constituting the brush contacts the portion from the tip to the root of the nozzle from diagonally below. Nozzle cleaning unit.   The nozzle cleaning unit according to claim 6, further comprising an elevating unit that elevates and lowers the brush between a cleaning position for cleaning the nozzle and a retreat position below the brush.   The nozzle cleaning unit according to claim 7, further comprising an operation error preventing unit that prevents the nozzle cleaning unit from being set on the component mounter in a state where the brush is raised to the cleaning position.   9. The nozzle cleaning unit according to claim 7, wherein the elevating unit changes a height of the cleaning position according to a type of nozzle to be cleaned. In a nozzle cleaning method for cleaning a component suction nozzle of a component mounting machine with a brush, the brush is supported so that a linear object (hereinafter referred to as “hair”) constituting the brush is inclined upward, A nozzle cleaning method comprising: cleaning a portion from the tip of the nozzle to the base by rotating the nozzle in a state where the brush bristles are in contact with the portion from the tip of the nozzle to the base from obliquely below. .

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