JP4885657B2 - Cleaning device - Google Patents

Description

  The present invention relates to a cleaning device, and more particularly to a cleaning device for a nozzle that sucks and discharges a sample.

  In the dispensing apparatus, a nozzle is used to suck and discharge the specimen. In a typical dispensing device, a nozzle is constituted by a nozzle tip and a tip mounting portion to which the nozzle tip is mounted. Usually, a resin-made disposable chip is used as the nozzle chip. When a disposable chip is used, when the disposable chip is removed, fine splashes may be generated from the specimen remaining on the inner wall of the nozzle chip or the like due to the removal force or reaction force. The splash may adhere to the chip mounting part. For this reason, for example, it is necessary to clean the chip mounting portion about once a day. Conventionally, the cleaning operation of the chip mounting portion has been performed manually. Although Patent Document 1, Patent Document 2 and Patent Document 3 describe a method for cleaning a dispensing nozzle, there is no description about cleaning of a tip mounting portion, and a cleaning tool is used. There is also no mention of cleaning the nozzles more aggressively (ie using physical contact).

Japanese Patent Laid-Open No. 5-1983 JP-A-8-21840 JP-A-11-271331

  In the dispensing device, it is necessary to clean the tip mounting part as a regular maintenance. In the manual cleaning operation, the tip mounting portion is cleaned after removing the tip mounting portion using a tool such as a spanner. In particular, some dispensing apparatuses with high processing capability include five or more tip mounting portions, and the cleaning operation is time-consuming and labor-intensive for the user.

  The objective of this invention is providing the washing | cleaning apparatus which can reduce the burden of the maintenance of a dispensing apparatus.

  The present invention includes a cleaning liquid container for storing a cleaning liquid therein, a cleaning tool provided inside the cleaning liquid container, a transport mechanism for transporting a chip mounting portion to which a dispensing nozzle tip is detachably mounted, and the transport Means for controlling the operation of the mechanism, and at the time of cleaning the chip mounting portion, a control means for executing control for moving the chip mounting portion to a cleaning position by the cleaning tool and cleaning the chip mounting portion; It is related with the washing | cleaning apparatus characterized by including. Preferably, the cleaning tool is a cleaning brush.

  According to the above configuration, at the time of cleaning the chip mounting part, the chip mounting part is transported to the cleaning section by the transport mechanism, and the chip mounting part is cleaned by the cleaning tool and the cleaning liquid in the cleaning liquid container. Therefore, the chip mounting portion can be automatically and reliably cleaned by executing the above-described cleaning operation periodically or at a desired timing. Various cleaning tools can be used. However, if a cleaning brush is used as the cleaning tool, the efficiency of cleaning can be improved by bringing a plurality of flocks into contact with the surface of the chip mounting portion. For example, it is possible to reliably scrape dry specimens or specimens with increased viscosity. It is desirable to bring the cleaning tool into contact with a portion of the chip mounting portion where contamination may occur. For example, the inner peripheral surface, the outer peripheral surface, or the front end surface of the tip mounting portion It is desirable to contact. The cleaning tool may be made of a material such as sponge, cloth, etc., which can be deformed to some extent.

  Preferably, the tip mounting portion has a hollow hole as a dispensing air flow path, and the cleaning brush is erected on the bottom surface of the cleaning liquid container, and the tip mounting portion is disposed in the hollow hole when cleaning the tip mounting portion. The cleaning brush is inserted.

  According to the above configuration, the inner surface of the hollow hole is cleaned by inserting the cleaning brush provided upright on the bottom of the cleaning liquid container and immersed in the cleaning liquid into the hollow hole of the chip mounting portion. The liquid adhering to the inner surface of the hollow hole can be removed with a cleaning brush as a cleaning tool. Of course, you may comprise the said cleaning brush so that the outer surface of a chip | tip mounting part may contact a cleaning brush.

  Preferably, the tip mounting portion moves up and down in a state where the cleaning brush is inserted into the hollow hole. According to this configuration, the cleaning effect can be enhanced. In addition, an existing transport mechanism can be used to perform the vertical movement.

  Desirably, the tip mounting portion has a hollow hole as a dispensing air flow path, and exhaust means for discharging air from the hollow hole after the tip mounting portion is cleaned by the cleaning brush is provided. According to this structure, the residual liquid adhering to the inside of the hollow hole of the chip mounting portion can be discharged with air and blown off by the cleaning operation. Problems due to residual cleaning liquid in the hollow holes (for example, drop of liquid droplets during nozzle conveyance) can be prevented in advance.

  Desirably, it further includes a moisture absorbing means, and the control unit brings the tip mounting portion into contact with the moisture absorbing means after the tip mounting portion is cleaned by the cleaning brush. According to this configuration, after the cleaning using the cleaning brush, the cleaning liquid present on the surface of the chip mounting portion can be absorbed by the moisture absorbing means. Thereby, it is possible to prevent the cleaning liquid from remaining on the surface of the chip mounting portion and affecting the subsequent nozzle operation.

  The tip mounting portion can be cleaned every time the nozzle tip is removed from the tip mounting portion, but may be performed at a predetermined timing. For example, the washing process may be executed after the day of operation of the dispensing apparatus, or may be executed before the day of operation. Further, a person who regularly performs maintenance may give a cleaning operation command based on the determination. Further, multiple nozzles (nozzle rows composed of a plurality of nozzles) may be cleaned simultaneously. In that case, it is desirable to prepare a cleaning tool for each nozzle.

  As described above, according to the present invention, it is possible to reduce the maintenance burden on the dispensing device.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the drawings. FIG. 1 is an explanatory view of an automatic dispensing apparatus equipped with a function of a cleaning apparatus according to an embodiment of the present invention. The automatic dispensing apparatus 100 is one apparatus in the entire sample processing system, and is used as a dedicated apparatus for dispensing work. FIG. 1 is a configuration diagram of the automatic cleaning apparatus 100 as a whole, and therefore, components that are not particularly necessary for cleaning the chip mounting portion are shown. In practice, however, the configuration required for the cleaning function is shown. As a product, the cleaning tank 32, the five-unit nozzle unit 16, its transport mechanism, and the control unit 20 of the transport mechanism are required.

  To the automatic dispensing apparatus 100, a sample that is the object of the dispensing process is transported from an apparatus arranged on the upstream side of the automatic dispensing apparatus 100. FIG. 1 shows that three parent sample racks (10a, 10b, 10c) are transported on the rack transport belt 12 in the positive direction of the X axis. Examples of the type of specimen include blood and urine.

  The automatic dispensing apparatus 100 includes a five-unit nozzle unit 16. The five-unit nozzle unit 16 has five chip mounting portions (36a to 36e). The five-unit nozzle unit 16 is mounted on an X-axis linear guide 18 for guiding movement in the X direction. Both end portions of the X-axis linear guide 18 are mounted on two Y-axis linear guides 20A and 20B for moving in the Y-axis direction. An X-axis drive motor and a Y-axis drive motor (not shown) are used as a drive source for moving the five-nozzle unit 16 in the X direction and the Y direction. A Z-axis drive motor is mounted inside the five-unit nozzle unit 16. The X-axis drive motor, the Y-axis drive motor, and the Z-axis drive motor that are drive sources for moving the five-unit nozzle unit 16 are controlled in the amount of movement in each direction according to a command signal from the control unit 20. The five-unit nozzle unit 16 is transported and positioned at an arbitrary position within the transportable range of the XYZ three-dimensional coordinates when the control unit 20 commands the movement amount and the movement speed.

  Within the moving range of the five-unit nozzle unit 16, an unused nozzle tip rack 24, a child sample dispensing rack 28, a tip remover 30, a cleaning tank 32, and the like are arranged at predetermined positions. The unused nozzle tip rack 24 is a rack that stores a large number of new and unused nozzle tips. Note that the nozzle tip in this embodiment is a so-called disposable tip. The child sample dispensing rack 28 is a rack in which test tubes to which samples are dispensed are collectively arranged. The tip remover 30 is a device for removing a resin nozzle tip attached to a metal tip mounting portion. In this embodiment, a cleaning section is provided on the side of the unused nozzle tip rack 24 as a place for cleaning the tip mounting portion. The cleaning tank 32 is arranged in the cleaning section.

  The dispensing operations performed using the 5-unit nozzle unit 16 are basically (1) mounting a new nozzle tip, (2) aspirating the sample, (3) discharging the sample, and (4) removing the nozzle tip. It consists of four steps. The dispensing operation for a plurality of parent samples mounted on the parent sample rack will be described in the following order.

  Each parent sample is injected into one test tube. For example, a parent sample rack in which five test tubes are combined and mounted as one set is a rack transport belt with the parent sample rack as a transport unit. 12 is transported to the automatic dispensing apparatus 100. The parent sample rack on which the parent sample to be subjected to the dispensing work is temporarily stopped at the dispensing position 26 in the approximate center of the automatic dispensing apparatus 100.

  (1) Installation of new nozzle tip. The five-unit nozzle unit 16 moves onto the unused nozzle tip rack 24 before the parent sample rack arrives at the dispensing position 26, and performs a mounting operation for attaching a new nozzle tip to the tip mounting portion.

  (2) Sample aspiration. After mounting the nozzle tips, the five-nozzle unit 16 moves toward the parent sample rack stopped at the dispensing position 26, inserts each nozzle tip into each test tube, and moves the sample in the test tube into the nozzle tip. To suck.

  (3) Sample ejection. After the sample is aspirated at the dispensing position 26, the five-unit nozzle unit 16 moves toward the child sample dispensing rack 28. The sample sucked into each nozzle tip is dispensed in small quantities into a plurality of test tubes mounted on the child sample dispensing rack 28.

  (4) Remove the nozzle tip. After all the sample sucked into the nozzle tip is discharged, the five-unit nozzle unit 16 moves to the place where the tip remover 30 is installed, and the nozzle tip of the nozzle tip is inserted into the U-shaped notch groove provided in the tip remover 30. Hook the upper edge and remove the nozzle tip. When all the nozzle tips have been removed at once, the entire dispensing operation is completed.

  When a command for dispensing operation is again issued from the control unit 20 after removing the nozzle tip, the process returns to the step (1) of attaching a new nozzle tip in the unused nozzle tip rack 24 again, and the dispensing operation is repeated. It is. As described above, the five-unit nozzle unit 16 can perform the dispensing operation repeatedly by performing the operations of the above-described four steps (1), (2), (3), and (4).

  While the predetermined dispensing process from (1) to (4) is repeatedly performed, the liquid specimen only comes into contact with the nozzle tip. Therefore, basically, a state in which the specimen directly touches the chip mounting portion and gets wet does not occur. However, if the sample is aspirated and ejected many times, a minute amount of splash may be generated from the liquid sample, and the minute amount of splash may flow along the flow of air inside the nozzle tip. May adhere to the surface. As a preventive measure against the spray of the sample adhering to the tip mounting portion, a measure to perform the nozzle tip removing operation in the step (4) while discharging air from the tip mounting portion has been considered. However, even if such precautions are taken, droplet adhesion may occur, and it has become necessary to clean the chip mounting portion about once a day. The cleaning apparatus according to the present embodiment has been devised to cope with the problem under the above background.

  FIG. 2 is a perspective view of the five-unit nozzle unit 16 shown in FIG. As described above, the 5-unit nozzle unit 16 is mounted on the X-axis linear guide 18. The five-unit nozzle unit 16 includes five dispensing modules (34a to 34e) so that five specimens can be simultaneously processed by one operation. A total of five tip mounting portions (36a to 36e) are mounted with unused nozzle tips each time a dispensing operation is performed. FIG. 2 shows a state in which the nozzle tip 38a is attached to the tip attachment portion 36a as one tip attachment portion, for example. The syringe pump 42a is connected to the tip mounting part 36a by a piping tube (not shown).

  Since the five dispensing modules (34a to 34e) are common to each other with respect to the dispensing function, the function is described for one dispensing module 34a in order to simplify the description. The dispensing module 34a includes a Z-axis drive motor 41a for rotating the shaft axis, a Z-axis guide mechanism 40a for converting the rotational force of the Z-axis drive motor 41a into a conveying force in the vertical direction of the tip mounting portion 36a, And a chip mounting portion 36a provided on the lower side of the dispensing module. When the Z-axis drive motor 41a rotates, the rotational force is transmitted to the Z-axis guide mechanism 40a, and the chip mounting portion 36a moves up and down along the Z-axis. When the syringe pump 42a operates, air can be sucked or discharged from the central hole of the tip mounting portion 36a connected to the syringe pump 42a by a tube. In this embodiment, each chip mounting part (36a-36e) does not move freely independently, but forms a group as the 5-unit nozzle unit 16, and moves.

  FIG. 3 is an explanatory view schematically showing a portion functioning as a cleaning device in the automatic dispensing device shown in FIG. 1. FIG. 3 shows the cleaning tank 32 and a part of the five-unit nozzle unit 16. The cleaning tank 32 is disposed in a cleaning section provided in the automatic dispensing apparatus 100 shown in FIG. The cleaning tank 32 includes a cleaning liquid container 52, cleaning brushes (56a to 56e), a water absorption pad 62, and the like. The cleaning liquid container 52 is a rectangular parallelepiped metal container for storing a liquid. The cleaning liquid container 52 is preferably made of a corrosion-resistant material such as stainless steel, but may be made of a material such as glass.

  A metal bottom block 54 is disposed in the cleaning liquid container 52. The bottom block 54 is provided with five holes, and five cleaning brushes (56a to 56e) are arranged upright in the holes. The cleaning brushes are arranged on a straight line, and the intervals are arranged at the same pitch in the X-axis direction. As the five cleaning brushes (56a to 56e), a brush made by bundling two wires, flocking a hair material therebetween, and twisting the wires is used. In addition to the planted brush, a generally cylindrical cleaning tool equipped with a sponge can also be used.

  The cleaning liquid container 52 is provided with a cleaning liquid injection pipe 58 for injecting the cleaning liquid. The cleaning liquid injection tube 58 is made of resin, and its shape is partially bent. The cleaning liquid injection pipe 58 is provided with a cleaning liquid injection valve (not shown), and a required amount of cleaning liquid can be injected into the cleaning liquid container 52 by opening and closing the valve. Basically, a so-called detergent (diluted liquid containing a surface active agent) is used as the cleaning liquid. However, it is also possible to use a disinfecting liquid having a bactericidal action such as hibiten.

  A cleaning liquid discharge pipe 60 for discharging the cleaning liquid in the container is provided on the bottom surface of the cleaning liquid container 52. The cleaning liquid discharge pipe 60 is provided with a discharge valve 61, and the cleaning liquid after the cleaning process or the residue in the cleaning liquid container can be discharged by opening and closing the valve.

  A water absorption pad 62 is disposed on the back side of the cleaning liquid container 52. The water absorption pad 62 is a component for absorbing moisture adhering to the five chip mounting portions (36a to 36e). The water absorbent pad 62 is made of water absorbent paper, but may be made of a material such as a polymer absorbent material, cotton or sponge. The water absorbing pad 62 of the present embodiment is disposable and is exchanged for each cleaning. The shape of the water absorption pad 62 is a planar shape that is easy to form. In the case where the water absorbing pad 62 is molded using a material that can be molded, such as sponge, it may be molded by providing a recess so as to increase the contact area in accordance with the cylindrical shape of the lower end of the chip mounting portion 36. .

  As described above, the five-unit nozzle unit 16 has five chip mounting portions (36a to 36e). Each chip mounting portion is formed with a hollow hole penetrating through the same central axis as the cylindrical portion (as a representative example of all five chip mounting portions), for example, the hollow hole 37a of the chip mounting portion 36a. Is in communication with the through hole of the support portion 39a that supports the chip mounting portion 36a at the top. The through hole of the support part 39 a penetrates to the connection part of the tube 64. A tube 64a is connected to the tube connection portion of the support portion 39a, and the other end of the tube 64a is connected to the syringe pump 42a. The five-unit nozzle unit 16 is provided with a total of five syringe pumps, which are connected to each chip mounting portion and a tube, respectively.

  When cleaning the chip mounting portions (36a to 36e), first, a cleaning liquid is injected. That is, a cleaning liquid injection valve (not shown) is opened and the cleaning liquid is poured from the cleaning liquid injection pipe 58 into the cleaning liquid container 52. The cleaning liquid is injected to such a height that the tip of the cleaning brush 56 slightly protrudes from the liquid surface. In this embodiment, since the amount of the cleaning liquid to be injected is about several hundred milliliters, the adjustment of the cleaning liquid injection flow rate and the determination of the height of the liquid level are performed manually by visual judgment of the operator. However, it is possible to automate the cleaning liquid injection start operation using an electromagnetic valve. The height of the cleaning liquid is detected by a liquid level sensor, and the electromagnetic valve is closed when a predetermined amount of cleaning liquid is injected. Thus, the injection completion operation can be automated. When the injection of the cleaning liquid is completed, the five cleaning brushes (56a to 56e) are in a state where the bristle portion is slightly protruded from the liquid surface at the tip, and the main part of the cleaning brush is mostly in the cleaning liquid. Soaked in. Preparation for cleaning is completed by injecting the cleaning liquid.

  In order to start the cleaning operation, the operator operates a cleaning switch provided on the operation panel of the automatic dispensing apparatus 100 shown in FIG. The control unit 20 shown in FIG. 1 detects that the cleaning switch has been operated, and instructs the transport mechanism of the five-unit nozzle unit 16 to execute a predetermined cleaning sequence operation.

  With reference to FIG. 4, the operation of the chip mounting unit for performing the cleaning operation will be sequentially shown. FIG. 4 shows the operation during the cleaning operation of the chip mounting portion 36a. The operations from I to VI shown in FIG. 4 are all performed according to a command from the control unit 20 of the transport mechanism.

  First, the tip mounting portion 36a is transferred to the cleaning section with the nozzle tip already removed by the tip remover 30. In FIG. 4, the operation of one chip mounting portion 36a is representatively shown, but the same operation is performed for the other four chip mounting portions (36b to 36e). The control unit 20 of the transport mechanism first instructs a movement command to move the chip mounting unit 36a to a position directly above the cleaning brush 56a (Operation I). At a position directly above the cleaning brush 56a, the syringe pump 42a sucks air to its full capacity.

  After accumulating air inside the syringe pump 42a, the control unit 20 commands the next movement command, and the tip mounting unit 36a descends vertically toward the upright cleaning brush 56a (operation II). Due to the lowering of the chip mounting portion 36a, an upright cleaning brush 56a is inserted into the hollow hole 37a. Since the positioning accuracy of the five-unit nozzle unit 16 is high, the cleaning brush 56a is inserted straight into the center position of the hollow hole 37a. Simultaneously with the insertion, the bristle material of the cleaning brush 56a contacts the inner wall surface of the hollow hole 37a.

  In a state where the cleaning brush 56a is inserted in the chip mounting part 36a, the control unit 20 commands the next movement command, and the chip mounting part 36a reciprocates up and down in the Z-axis direction (operation III). With the lower end surface 35 of the chip mounting portion 36a or the inner wall surface of the hollow hole 37a immersed in the cleaning liquid, the cleaning brush 56a inserted into the hollow hole 37a and the chip mounting portion 36a are relatively rubbed in the vertical direction. Since the flocking of the cleaning brush 56a directly rubs the inner wall, dirt attached to the inside can be scraped off and removed.

  After completing a plurality of up and down movements, the control unit 20 commands the next movement command, and the chip mounting unit 36 moves upward to maintain a position higher than the cleaning liquid, and moves in the horizontal direction as it is, so that the water absorption pad 62 is moved. Is stopped at the upper position (operation IV). After stopping, the air sucked into the syringe pump 42a is discharged. By discharging air from the hollow hole, the residual liquid adhering to the inside of the hollow hole is blown off to the outside of the hollow hole. Regarding the number of times air is discharged from the hollow holes, the sucked air may be discharged all at once or may be discharged in several times. The place for performing the operation of discharging air may not be on the water absorption pad 62 but may be on the cleaning liquid container 52.

  After moving upward of the water absorption pad 62, the control unit 20 commands the next movement command, and moves the position by lowering its position in the Z-axis direction (operation V). The lower end surface 35 of the chip mounting portion 36 is lowered in height until it contacts the water absorption pad 62. Since the number of times of contact between the chip mounting portion 36 and the water absorbing pad 62 is not limited to one, it may be multiple times, and thus the ascending and descending operations in the Z-axis direction can be repeated after contact. By bringing the tip mounting portion 36a into contact with the water absorption pad 62 and sucking out the remaining liquid, it is possible to prevent the droplet from dropping from the tip mounting portion 36a in advance.

  After contacting the water absorption pad 62, the control unit 20 commands a movement command, and the chip mounting unit 36a moves upward (operation VI). After moving upward, it shifts to the next movement command waiting state. When a new nozzle tip mounting command is issued from the control unit 20 while waiting for a movement instruction, the tip mounting unit moves to the unused nozzle tip rack 24 and can continue the dispensing process. Since the cleaning process of the chip mounting part 36a is usually performed in the final process of the day, the operation of the automatic dispensing device 100 is stopped as it is after the cleaning process is completed, and the chip mounting part 36a is naturally dried. It may be left as it is.

  Incidentally, the cleaning of the cylindrical surface 33 of the chip mounting portion 36a can be performed by performing an operation in which the chip mounting portion 36a makes a round around the fixed cleaning brush 56a.

  That is, the tip mounting portion 36a is not lowered from right above the cleaning brush 56a, but the tip mounting portion 36a is lowered at a position slightly away in the X-axis or Y-axis direction where the cleaning brush 56a is not inserted into the hollow hole 37a. Thus, a part of the cleaning brush 56a can be brought into contact with a part of the cylindrical surface 33 of the chip mounting portion 36a. By performing a circular motion around the cleaning brush 56a on the XY plane with the contact state, the cylindrical surface 33 of the chip mounting portion 36a can be rubbed over the entire circumference by the cleaning brush 56a. The operation performed by the tip mounting portion 36a by the operation III is a reciprocating motion in the vertical direction and is suitable for cleaning the inside of the hollow hole 37a. However, by performing a motion around the cleaning brush 56a, The surface 33 can also be cleaned.

  According to the cleaning apparatus described above, the cleaning process can be executed simply by the operator pressing the switch for the cleaning operation, so that all the chip mounting portions can be easily and automatically cleaned. . Since the cleaning process is performed regularly and automatically, there is no possibility that the specimen is left on the chip mounting portion for a long time, and the specimen can be prevented from being stuck. This cleaning apparatus can also be used for sample processing apparatuses other than the dispensing apparatus.

It is a top view of an automatic dispensing device to which a cleaning device according to an embodiment of the present invention is applied. It is a perspective view of a 5-unit nozzle unit. It is explanatory drawing which showed typically the part which functions as a washing | cleaning apparatus. It is a figure which shows operation | movement of the chip | tip mounting part at the time of washing | cleaning operation | movement.

Explanation of symbols

  16 5-unit nozzle unit, 32 cleaning tank, 33 cylindrical surface, 35 lower end surface, 36a, 36b, 36c, 36d, 36e chip mounting portion, 37a, 37b, 37c, 37d, 37e hollow hole, 42a syringe pump, 52 cleaning liquid container , 54 Bottom block, 56a, 56b, 56c, 56d, 56e Cleaning brush, 58 Cleaning liquid injection pipe, 60 Cleaning liquid discharge pipe, 61 Discharge valve, 62 Water absorption pad, 64 Tube.

Claims (7)

A cleaning liquid container for storing cleaning liquid inside;
A cleaning tool provided inside the cleaning liquid container;
A transport mechanism for transporting a tip mounting portion on which a dispensing nozzle tip is detachably mounted;
Control means for controlling the operation of the transport mechanism, and for controlling the cleaning of the chip mounting section by moving the chip mounting section to a cleaning position by the cleaning tool when cleaning the chip mounting section; ,
Only including,
The cleaning apparatus, wherein the cleaning tool is a member that is inserted into a hollow hole of the chip mounting portion to clean the hollow hole . The cleaning device according to claim 1,
The cleaning device, wherein the cleaning tool is a cleaning brush. The cleaning apparatus according to claim 1 or 2,
Before SL cleaner is upright arranged on the bottom surface of the washing liquid container,
The cleaning device , wherein the cleaning tool is inserted into the hollow hole when cleaning the chip mounting portion. The cleaning apparatus according to claim 3, wherein
The cleaning apparatus , wherein the tip mounting portion moves up and down in a state where the cleaning tool is inserted into the hollow hole. The cleaning device according to claim 1 ,
Before SL after cleaning with the cleaning tool for the chip mounting part, exhaust means for discharging air from the hollow hole is provided, it cleaning apparatus according to claim. The cleaning device according to claim 1,
In addition, it contains moisture absorption means,
The said control part makes the said chip | tip mounting part contact the said water | moisture-content absorption means after washing | cleaning with the said cleaning tool with respect to the said chip | tip mounting part. A cleaning liquid container for storing cleaning liquid inside;
A plurality of cleaning tools provided inside the cleaning liquid container;
A transport mechanism for transporting a plurality of tip mounting portions to which a plurality of dispensing nozzle tips are detachably mounted;
A means for controlling the operation of the transport mechanism, wherein when cleaning the plurality of chip mounting portions, the plurality of chip mounting portions are moved to a cleaning position by the plurality of cleaning tools to clean the plurality of chip mounting portions. Control means for executing control to perform,
Including
Each of the cleaning tools is a member that is inserted into a hollow hole of each chip mounting portion to clean the hollow hole.

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