JP2013197459A - Nozzle cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a nozzle cleaning device in simple structure.SOLUTION: A nozzle cleaning device 70 for cleaning a suction nozzle 50 comprises a housing 72 which is removably mounted to a nozzle holder 56 which holds the suction nozzle in the state where the suction nozzle is accommodated, a slide member 74 which is held in the housing being mounted to the nozzle holder while being slidable on a plane crossing an axial line direction of the suction nozzle, a cleaner 76 disposed on the slide member for cleaning a distal end portion of the suction nozzle, and a grip part 78 fixed to the slide member, extending outside of the housing and gripped by an operator. Specifically, the nozzle cleaning device can be composed only of the housing, the slide member held in the housing in the slidable manner, the cleaner disposed on the slide member and the grip part to be gripped by the operator, thereby accomplishing the nozzle cleaning device in remarkably simple structure.

Description

  The present invention relates to a nozzle cleaning device for cleaning a suction nozzle that sucks and holds a mounting component mounted on a circuit board.

  The suction nozzle sucks and holds the mounted component at the mounting component supply position, and the mounted component is mounted on the circuit board by removing the mounted component that has been sucked and held at the mounting position on the circuit board. At the time of mounting the mounting component on the circuit board, the mounting component sucked and held by the suction nozzle is usually imaged in order to appropriately mount the mounting component sucked and held by the suction nozzle on the circuit board. Information such as the holding state of the mounted component is acquired from the image data obtained by the imaging, and the mounted component is appropriately mounted on the circuit board based on the acquired information.

  However, if dust or the like adheres to the suction nozzle, the image data of the mounted part may not be properly acquired due to the dust or the like, and there is a possibility that the mounting operation of the mounted part may not be performed properly. Moreover, cream solder, an adhesive agent, etc. may adhere to the front-end | tip part of a suction nozzle at the time of mounting | wearing operation | work. For this reason, in order to appropriately clean the suction nozzle, various nozzle cleaning devices have been developed as described in the following patent documents.

JP 2003-179399 A Japanese Patent Laid-Open No. 2003-311229

  In the nozzle cleaning device described in the above patent document, it is possible to remove dust from the suction nozzle and clean the suction nozzle by operating a cleaning tool such as a brush with a drive source such as an electromagnetic motor. Yes. However, the nozzle cleaning device described in the above-mentioned patent document incorporates a drive source such as an electromagnetic motor, and further incorporates a transmission mechanism such as a gear mechanism and a cam mechanism in order to transmit the driving force to the cleaning tool. Thus, the structure of the nozzle cleaning device tends to be complicated. This invention is made | formed in view of such a situation, and makes it a subject to provide the nozzle cleaning apparatus of a simple structure.

  In order to solve the above problem, a nozzle cleaning device according to claim 1 of the present application is a nozzle cleaning device for cleaning a suction nozzle that sucks and holds a mounting component mounted on a circuit board, and holds the suction nozzle. A housing that is detachably mounted in a state in which the suction nozzle is accommodated in the nozzle holding body, and a housing that is mounted in the nozzle holding body, and is slidable on a plane that intersects the axial direction of the suction nozzle. A slide member held in a state, a cleaning tool disposed on the slide member, for cleaning the tip of the suction nozzle, and fixed to the slide member, and extended to the outside of the housing, It is characterized by comprising a gripping part to be gripped by the operator.

  The nozzle cleaning device according to claim 2 is characterized in that, in the nozzle cleaning device according to claim 1, the slide member, the cleaning tool, and the grip portion are formed of a conductive material. To do.

  The nozzle cleaning device according to claim 3 is the nozzle cleaning device according to claim 1 or 2, wherein the housing is an inner housing mounted on the nozzle holder, and at least one of the inner housings. An outer housing that is detachably attached to the inner housing in a state of surrounding the portion, and a portion of the inner housing surrounded by the outer housing communicates with the inside of the inner housing and the inside of the outer housing. It is characterized by being cut out.

  The nozzle cleaning device according to claim 4 is the nozzle cleaning device according to any one of claims 1 to 3, wherein the housing is slidable only in one direction. It is characterized by being held in

  The nozzle cleaning device according to claim 5 is the nozzle cleaning device according to any one of claims 1 to 4, wherein the housing is rotatable relative to the nozzle holder. It is mounted on the nozzle holder.

  In the nozzle cleaning device according to claim 1, the suction nozzle is cleaned by the cleaning tool provided on the slide member when the operator manually slides the slide member slidably held in the housing. It is configured. That is, the nozzle cleaning device is configured only by a housing, a slide member that is slidably held in the housing, a cleaning tool that is disposed on the slide member, and a gripping portion that is held by an operator. Is possible. Therefore, according to the nozzle cleaning device of the first aspect, it is possible to realize a nozzle cleaning device having a considerably simple structure.

  Moreover, in the nozzle cleaning apparatus of Claim 2, the slide member, the cleaning tool, and the holding part are shape | molded with the electroconductive raw material. For this reason, when the operator holds the grip portion, static electricity charged in the suction nozzle flows to the operator, and static electricity charged in the suction nozzle can be removed. Thereby, it becomes possible to suppress adhesion of dust or the like to the suction nozzle due to static electricity.

  According to a third aspect of the present invention, in the nozzle cleaning device, the housing is configured by an inner housing that is attached to the nozzle holder and an outer housing that surrounds at least a part of the inner housing. It is supposed to be removable. The outer wall of the inner housing is cut away so that the inside of the inner housing and the inside of the outer housing communicate with each other. As a result, dust or the like removed from the suction nozzle by cleaning the suction nozzle in the housing enters the inside of the outer housing through the notch. For this reason, by removing the outer housing from the inner housing, it is possible to easily remove dust or the like that has entered the outer housing.

  In the nozzle cleaning device according to the fourth aspect, the slide member can be slid only in one direction. That is, the suction nozzle is cleaned by the operator reciprocating the grip portion in one direction. In this way, since the suction nozzle is cleaned by a simple operator action without relying on the skill level of the operator at all, it is possible to suppress variations in the degree of cleaning of the suction nozzle by the operator. It becomes.

  In the nozzle cleaning device according to the fifth aspect, the housing can be rotated with respect to the nozzle holder in a state where the housing is mounted on the nozzle holder. For this reason, for example, after the operator reciprocates the gripping part and cleans the suction nozzle, the housing mounted on the nozzle holder is rotated 90 degrees with respect to the nozzle holder. Then, after rotating the housing, the operator can reciprocate the gripping part to clean the suction nozzle. Thereby, it becomes possible to clean the outer peripheral surface of the suction nozzle over the entire circumference without removing the nozzle cleaning device from the mounting head.

It is a perspective view which shows the electronic component mounting apparatus which has the mounting head which can attach the nozzle cleaning apparatus which is an Example of this invention. It is a perspective view which shows the mounting head with which the electronic component mounting apparatus shown in FIG. 1 is provided in the state which removed the upper cover. It is a cross-sectional perspective view which shows the nozzle cleaning apparatus of the state attached to the mounting head shown in FIG. It is a figure which shows the nozzle cleaning apparatus shown in FIG. 3 in the viewpoint from upper direction. It is sectional drawing in the AA line shown in FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as modes for carrying out the present invention.

<Configuration of electronic component mounting device>
FIG. 1 shows an electronic component mounting apparatus (hereinafter sometimes abbreviated as “mounting apparatus”) 10. The figure is a perspective view in which a part of the exterior component of the mounting apparatus 10 has been removed. The mounting apparatus 10 includes one system base 12 and two electronic component mounting machines (hereinafter, may be abbreviated as “mounting machines”) 16 arranged side by side adjacent to each other on the system base 12. It is configured so as to perform an operation of mounting mounting components including electronic components on a circuit board. In the following description, the direction in which the mounting machines 16 are arranged is referred to as an X-axis direction, and a horizontal direction perpendicular to the direction is referred to as a Y-axis direction.

  Each of the mounting machines 16 included in the mounting apparatus 10 mainly includes a mounting machine main body 24 configured to include a frame unit 20 and a beam unit 22 overlaid on the frame unit 20, and a circuit board in the X-axis direction. A transport device 26 that transports and fixes a set position, a mounting head 28 that mounts a mounting component on a circuit board fixed by the transport device 26, and a mounting head 28 that is disposed on the beam portion 22 and that is mounted on the X-axis. A moving device 30 that moves in the direction and the Y-axis direction, and a supply device 32 that is disposed in front of the frame portion 20 and supplies the mounting component to the mounting head 28.

  The transport device 26 includes two conveyor devices 40 and 42, and the two conveyor devices 40 and 42 are parallel to each other and extend in the X-axis direction so that the central portion in the Y-axis direction of the frame portion 20. It is arranged. Each of the two conveyor devices 40 and 42 conveys the circuit board supported by each conveyor device 40 and 42 in the X-axis direction by an electromagnetic motor (not shown) and holds the circuit board fixedly at a predetermined position. It is supposed to be a structure.

  The moving device 30 is an XY robot type moving device, and includes an electromagnetic motor (not shown) that slides a slider 46 that holds the mounting head 28 in the X direction and an electromagnetic motor (not shown) that slides in the Y direction. The mounting head 28 can be moved to an arbitrary position by the operation of the two electromagnetic motors.

  The supply device 32 is disposed at the front end of the frame portion 20 and is a feeder-type supply device. The feeder-type supply device 32 has a structure in which the mounted components are sequentially supplied from the taped component in which the mounted components are taped to the supply position to the mounting head 28, and a plurality of tapes around which the taped components are wound. A feeder 48 and a plurality of feeding devices (not shown) for feeding out each of the plurality of tape feeders 48 are provided.

  The mounting head 28 is for mounting a mounting component on a circuit board held by the transport device 26, and as shown in FIG. 2, a mounting unit 52 for holding a suction nozzle 50 for sucking the mounting component at the tip. There are multiple. Each suction nozzle 50 communicates with an air passage to which a positive / negative pressure supply device (not shown) is connected, and holds the mounting component by suction at a negative pressure and holds the mounting component by being supplied with a slight positive pressure. The structure is to leave. The mounting unit 52 having a generally axial shape is held on the outer periphery of the unit holder 56 that rotates intermittently at an equiangular pitch in a state in which the axial direction is vertical. It extends downward from the bottom surface.

  Further, the unit holder 56 is intermittently rotated by an angle equal to the arrangement angle pitch of the mounting unit 52 by the holding body rotating device 58, and the mounting unit 52 held by the unit holder 56 is intermittently rotated. At the lifting / lowering station (station located at the foremost position), which is one stop position of the mounting unit 52 in intermittent rotation, the mounting unit 52 positioned at that station is lifted / lowered by the unit lifting / lowering device 60. Further, a stop position different from the lifting station is set as a unit rotation station, and the mounting unit 52 positioned at the station is rotated by the unit rotation device 62. As a result, it is possible to change the vertical position of the mounted component held by suction and the holding posture of the mounted component.

  Furthermore, the mounting machine 16 includes a mark camera (not shown) and a parts camera (see FIG. 1) 68. The mark camera is fixed to the lower surface of the slider 46 so as to face downward, and can be imaged at an arbitrary position on the frame unit 20 by being moved by the moving device 30. On the other hand, the parts camera 68 is provided between the transport device 26 of the frame unit 20 and the supply device 32 in a state of facing upward, and images the mounted component sucked and held by the suction nozzle 50 of the mounting head 28. It is possible. Image data obtained by the mark camera and the parts camera 68 is processed in an image processing apparatus (not shown), and various information is acquired.

<Mounting work with electronic component mounting device>
With the mounting device 10, it is possible to perform a mounting operation for mounting a mounting component on a circuit board with the above-described configuration. More specifically, first, the conveyor boards 40 and 42 convey the circuit board to the mounting work position, and the circuit board is fixedly held at that position. Next, the mounting device 28 is moved onto the circuit board by the moving device 30, and the circuit board is imaged by the mark camera. The type of the circuit board and the circuit board holding position error by the conveyor devices 40 and 42 are acquired by the imaging. A mounting component corresponding to the acquired type of the circuit board is supplied by the tape feeder 48, and the mounting head 28 is moved to the supply position of the mounting component by the moving device 30. Thereby, the mounted component is sucked and held by the suction nozzle 50 of the mounting head 28. Subsequently, the mounting head 28 holding the mounting component is moved onto the part camera 68 by the moving device 30, and the mounting component held by the suction nozzle 50 is imaged by the part camera 68. A holding position error of the mounted component is acquired by the imaging. Then, the moving device 30 moves the mounting head 28 to the mounting position on the circuit board and rotates the suction nozzle 50 based on the holding position error between the circuit board and the mounted component, and then the electronic component is mounted.

  As described above, the mounting device 10 is configured to suck and hold the mounting component supplied by the tape feeder 48 by the suction nozzle 50 and mount the suction-held mounting component on the circuit board. In order to properly mount the mounting component sucked and held by the suction nozzle 50 on the circuit board, imaging of the mounting component sucked and held by the suction nozzle 50 is performed. Information such as the holding state of the mounted component is acquired from the image data obtained by the imaging, and the mounted component is appropriately mounted on the circuit board based on the acquired information.

  However, if dust or the like adheres to the suction nozzle 50, the image data of the mounted component may not be appropriately acquired due to the dust or the like, and there is a possibility that the mounting operation of the mounted component may not be performed properly. Moreover, cream solder, an adhesive agent, etc. may adhere to the front-end | tip part of the suction nozzle 50 at the time of mounting | wearing operation | work. In view of this, the mounting device 10 is provided with a nozzle cleaning device 70 for cleaning the suction nozzle 50.

<Structure of nozzle cleaning device>
The nozzle cleaning device 70 is detachably mounted on the mounting head 28 and is configured to manually clean the suction nozzle 50 in the mounted state. Below, the structure of the nozzle cleaning apparatus 70 is demonstrated concretely using FIGS. Incidentally, FIG. 3 is a cross-sectional perspective view showing the nozzle cleaning device 70 mounted on the mounting head 28. 4 is a view showing the nozzle cleaning device 70 from a viewpoint from above, and FIG. 5 is a cross-sectional view taken along the line AA in FIG.

  The nozzle cleaning device 70 includes a housing 72, a slide member 74 slidably held in the housing 72, a pair of brush-like cleaning tools 76 provided on the upper surface of the slide member 74, and the slide member 74. A pair of gripping rods 78 gripped by an operator for sliding operation and an attachment member 80 for attaching the housing 72 to the mounting head 28 are configured.

  The housing 72 includes a generally bottomed cylindrical inner housing 82 and a pair of outer housings 84 surrounding the side wall surface of the inner housing 82. The inner diameter of the upper end portion of the inner housing 82 is slightly larger than the outer diameter of the lower end portion of the unit holder 56 of the mounting head 28, and the upper end of the inner housing 82 is in a state where the housing 72 is attached to the mounting head 28. The lower end of the unit holder 56 can be inserted into the inside of the unit. Thereby, in a state where the housing 72 is attached to the mounting head 28, the distal end portion of the mounting unit 52 held by the unit holding body 56, that is, the suction nozzle 50 is accommodated in the inner housing 82.

  In addition, a pair of generally rectangular notches 86 are formed in two equally spaced positions on the side wall surface of the inner housing 82, and the pair of notches 86 face each other across the inside of the inner housing 82. ing. A pair of outer housings 84 is attached to the inner housing 82 with bolts 88 so as to cover the pair of notches 86. The pair of outer housings 84 can be removed from the inner housing 82 by removing the bolts 88.

  A pair of guide grooves (only one of which is shown in FIG. 3) 90 is formed on the inner peripheral surface slightly above the bottom surface of the inner housing 82 and extends linearly from one of the pair of notches 86 to the other. Are formed, and the pair of guide grooves 90 are parallel to each other. On the other hand, the slide member 74 is generally rectangular, and its length in the short direction is slightly shorter than the distance between the pair of guide grooves 90. The slide member 74 is inserted between the pair of guide grooves 90 from the end in the longitudinal direction. Thus, the slide member 74 is held by the inner housing 82 so as to be slidable in the longitudinal direction of the slide member 74. The slide member 74 is formed of a conductive material and has conductivity.

  On the upper surface of the slide member 74, a pair of cleaning tools 76 are arranged in series in the slide direction of the slide member 74. Each cleaning tool 76 includes a brush holding base 100 that is bolted to the upper surface of the slide member 74, and a plurality of brushes 102 that are planted while standing on the brush holding base 100. The brush 102 is made of nylon mixed with carbon and has conductivity. The brush holder 100 is also made of a conductive material and has conductivity.

  A pair of grip rods 78 are fixed to both ends of the slide member 74 in the slide direction so as to extend in the slide direction. Each gripping rod 78 is inserted into a through hole 106 formed in each outer housing 84 in a state of being fixed to the slide member 74, and the outside of each outer housing 84, that is, as the slide member 74 slides, , And extends outside the housing 72. Each grip rod 78 is also made of a conductive material and has conductivity.

  The mounting member 80 for mounting the housing 72 to the mounting head 28 has a shape in which both opposite edges of the flat plate-shaped member are bent, and the inner housing 82 of the housing 72 and the mounting head 28 are formed at both edges. The unit holding body 56 is sandwiched.

  Specifically, the attachment member 80 approaches the generally rectangular main body portion 108, a pair of upright portions 110 that are continuous from opposite edges of the main body portion 108, and the distal ends of the pair of upright portions 110. It is divided into a pair of folded portions 112 extending in the direction. A cutout portion (see FIG. 4) 114 is formed on one side where the standing portion 110 of the main body portion 108 is not standing up to the central portion of the main body portion 108. Further, an annular groove 116 is formed on the outer peripheral surface of the upper end portion of the inner housing 82, and the outer diameter of the portion of the inner housing 82 where the groove 116 is formed is a notch portion formed in the main body portion 108. The width is smaller than 114. As a result, it is possible to fit the notched portion 114 where the groove 116 of the inner housing 82 is formed.

  Further, the upper end surface of the unit holding body 56 in a state where the lower end portion of the unit holding body 56 is inserted inside the upper end portion of the inner housing 82, and a stepped surface that partitions the groove 116 of the inner housing 82 (see FIG. 5). The distance from 118 is substantially the same as the distance between the main body portion 108 and each folded portion 112. The distance between the pair of upright portions 110 is longer than the outer diameter of the upper end surface of the unit holder 56. For this reason, in a state where the notch 114 is inserted into the portion of the inner housing 82 where the groove 116 is formed, a step surface 118 that defines the groove 116 and a unit in which the lower end is inserted into the upper end of the inner housing 82. The upper end surface of the holding body 56 can be sandwiched between the main body portion 108 and the folded portion 112. Thereby, the attachment member 80 can attach the housing 72 to the mounting head 28.

  It should be noted that the distance between the upper end surface of the unit holder 56 and the step surface 118 in a state where the housing 72 is attached to the unit holder 56 by the attachment member 80, and the distance between the main body 108 and each folded portion 112. Since the distance is substantially the same, the clamping force between the main body portion 108 and the folded portion 112 is not so high. Thus, the housing 72 can be rotated with respect to the unit holding body 56 in a state where the housing 72 is attached to the unit holding body 56 by the mounting member 80. That is, the nozzle cleaning device 70 can be rotated with respect to the mounting head 28 in a state where the nozzle cleaning device 70 is attached to the mounting head 28.

  With the structure described above, the nozzle cleaning device 70 can be easily attached to and detached from the mounting head 28, and the suction nozzle 50 can be suitably cleaned while being attached to the mounting head 28. More specifically, when the nozzle cleaning device 70 is mounted on the mounting head 28, the lower end portion of the unit holder 56 is inserted into the upper end portion of the inner housing 82 in a state where the mounting member 80 is not mounted. . Then, the portion of the inner housing 82 where the groove 116 is formed is inserted into the notch 114 formed in the main body 108 of the attachment member 80. At this time, the upper end surface of the unit holding body 56 and the step surface 118 are sandwiched between the main body portion 108 of the attachment member 80 and the folded portions 112. As a result, the nozzle cleaning device 70 is attached to the mounting head 28 by the attachment member 80.

  In the nozzle cleaning device 70 attached to the mounting head 28, the suction nozzle 50 at the tip of the mounting unit 52 held by the unit holder 56 is accommodated in the inner housing 82. Then, when the operator grips the grip rod 78 and reciprocates the grip rod 78, the slide member 74 moves on the plane intersecting the axial direction of the suction nozzle 50 inside the inner housing 82. Specifically, the slide member 74 reciprocates in the longitudinal direction. As a result, the brush 102 of the cleaning tool 76 reciprocates in the direction intersecting the axial direction of the suction nozzle 50, and dust attached to the suction nozzle 50 can be removed from the suction nozzle 50.

  The dust removed from the suction nozzle 50 enters the outer housing 84. For this reason, by removing the outer housing 84 from the inner housing 82, it is possible to easily remove dust and the like that has entered the outer housing 84.

  Further, as described above, the nozzle cleaning device 70 can be rotated with respect to the mounting head 28 in a state where the nozzle cleaning device 70 is attached to the mounting head 28. For this reason, for example, after the operator reciprocates the grip rod 78 and cleans the suction nozzle 50, the nozzle cleaning device 70 attached to the mounting head 28 is rotated 90 degrees with respect to the mounting head 28. Then, after rotating the nozzle cleaning device 70, the operator can reciprocate the grip rod 78 to clean the suction nozzle 50. Thereby, it becomes possible to clean the outer peripheral surface of the suction nozzle 50 over the entire circumference without removing the nozzle cleaning device 70 from the mounting head 28.

  Further, in the nozzle cleaning device 70, dust or the like attached to the suction nozzle 50 is removed by the operator reciprocating the grip rod 78 in a direction defined by the guide groove 90, and the tip of the suction nozzle 50 is removed. Is cleaned. In this way, the suction nozzle 50 is cleaned by a simple operation of the operator without depending on the skill level of the operator. For this reason, it becomes possible to suppress variation in the degree of cleaning of the suction nozzle 50 by the operator of the grip rod 78.

  Furthermore, the suction nozzle 50 can be cleaned by reciprocating the slide member 74 by a simple operator action. For this reason, a drive source such as an electromagnetic motor, a transmission mechanism such as a gear mechanism, a cam mechanism, and the like are not necessary, and the structure of the nozzle cleaning device 70 can be simplified.

  Further, in the nozzle cleaning device 70, as described above, all the members of the slide member 74, the grip rod 78, the brush holding base 100, and the brush 102 are formed of a conductive material and have conductivity. Has been. For this reason, when the operator holds the holding rod 78, static electricity charged in the suction nozzle 50 flows to the operator, and the static electricity charged in the suction nozzle 50 can be removed. Thereby, it becomes possible to suppress adhesion of dust or the like to the suction nozzle 50 due to static electricity.

  Incidentally, in the above embodiment, the nozzle cleaning device 70 is an example of the nozzle cleaning device, and the housing 72, the slide member 74, the cleaning tool 76, and the gripping rod 78 that constitute the nozzle cleaning device 70 are the housing, the slide member, and the cleaning. It is an example of a tool and a holding part. The inner housing 82 and the outer housing 84 constituting the housing 72 are examples of the inner housing and the outer housing. Further, the suction nozzle 50 and the unit holder 56 are examples of the suction nozzle and the nozzle holder.

  In addition, this invention is not limited to the said Example, It is possible to implement in the various aspect which gave various change and improvement based on the knowledge of those skilled in the art. Specifically, for example, in the above embodiment, a brush-like one is employed as the cleaning tool 76 for cleaning the suction nozzle 50, but various types such as a sponge-like one and a cloth-like one are used. Can be adopted.

  50: Adsorption nozzle 56: Unit holder (nozzle holder) 70: Nozzle cleaning device 72: Housing 74: Slide member 76: Cleaning tool 78: Grip rod (gripping part) 82: Inner housing 84: Outer housing

Claims (5)

In a nozzle cleaning device for cleaning a suction nozzle that sucks and holds a mounting component mounted on a circuit board,
A housing that is detachably mounted in a state in which the suction nozzle is accommodated in a nozzle holder that holds the suction nozzle;
A slide member that is held in a slidable state on a plane that intersects the axial direction of the suction nozzle in a housing mounted on the nozzle holder;
A cleaning tool disposed on the slide member for cleaning the tip of the suction nozzle;
A nozzle cleaning device, comprising: a grip portion that is fixed to the slide member, extends to the outside of the housing, and is gripped by an operator.   The nozzle cleaning device according to claim 1, wherein the slide member, the cleaning tool, and the grip portion are formed of a conductive material. The housing comprises:
An inner housing mounted on the nozzle holder;
An outer housing that is detachably attached to the inner housing in a state of surrounding at least a part of the inner housing, and a portion of the inner housing that is surrounded by the outer housing includes an inner portion of the inner housing and the outer housing. The nozzle cleaning device according to claim 1, wherein the nozzle cleaning device is cut out so as to communicate with the interior of the housing. The slide member is
The nozzle cleaning device according to any one of claims 1 to 3, wherein the nozzle cleaning device is held in the housing so as to be slidable only in one direction. The housing comprises:
5. The nozzle cleaning device according to claim 1, wherein the nozzle cleaning device is attached to the nozzle holder in a state of being relatively rotatable with respect to the nozzle holder.

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