JP2022092066A - Device for ejecting liquid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce discharge of mist from an exhaust port.

SOLUTION: A mist recovery device 500 includes a first opening member 504 and a second opening member 505 sequentially disposed downstream of an exhaust fan 503 and upstream of an exhaust port 515. The first opening member 504 has: a plurality of slit-shaped first openings 504a, through which air streams 600 pass; and wall portions 504b other than the first openings 504a, for blocking passage of the air streams 600. The second opening member 505 has: a plurality of slit-shaped second openings 505a through which the air streams 600 pass; and wall portions 505b other than the second openings 505a, for blocking passage of the air streams 600. The first openings 504 of the first opening member 504 are disposed opposite to the wall portions 505b of the second opening member 505.

SELECTED DRAWING: Figure 6

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention relates to a mist recovery device and a device for discharging a liquid.

In a device that discharges a liquid, such as a printing device provided with a liquid discharge head that discharges the liquid, the mist generated by the discharge of the liquid is collected by a filter or the like.

Conventionally, for example, a filter for filtering and discharging air and an exhaust duct for flowing and discharging air toward the filter are provided, and the exhaust duct is provided along the exhaust direction on the opposite upper inner surface and lower inner surface. It is known that a plurality of partition plates arranged alternately are provided, and the plurality of partition plates include a partition plate formed so as to be inclined in the direction opposite to the exhaust direction (Patent Document 1). (Patent Document 1).

Japanese Unexamined Patent Publication No. 2015-214164

However, in the configuration disclosed in Patent Document 1 described above, there is a problem that the mist that has passed through the filter is discharged from the exhaust port.

The present invention has been made in view of the above problems, and an object of the present invention is to reduce the emission of mist from the exhaust port.

In order to solve the above problems, the mist recovery device according to the present invention has an exhaust fan that generates an air flow, and a plurality of opening members that are sequentially arranged on the downstream side of the exhaust fan. The member is provided with an opening and a wall portion, and of the two adjacent opening members, at least a part of the opening portion of the opening member on the upstream side is the wall portion of the opening member on the downstream side. At least part of it is facing each other.

According to the present invention, the exhaust of mist from the exhaust port can be reduced.

It is a front explanatory view of the printing apparatus as the apparatus which ejects a liquid which concerns on 1st Embodiment of this invention. It is also a side explanatory view. It is also a plan explanatory view. It is a side explanatory view provided for the explanation of the air flow when the mist recovery device in the same embodiment is driven. It is a front explanatory view provided for the description of the 1st opening member and the 2nd opening member in the same embodiment. Similarly, it is a plan sectional explanatory view of the part from the exhaust fan to the exhaust port. It is a plan sectional explanatory view of the part from the exhaust fan to the exhaust port in the 2nd Embodiment of this invention. It is a front explanatory view provided for the description of the 1st opening member and the 2nd opening member in the 3rd Embodiment of this invention. Similarly, it is a plan sectional explanatory view of the part from the exhaust fan to the exhaust port. It is a front explanatory view provided for the description of the 1st opening member and the 2nd opening member in 4th Embodiment of this invention. It is a plan sectional explanatory view of the part from the exhaust fan to the exhaust port in 5th Embodiment of this invention. It is a front explanatory view of the 1st opening member and the 2nd opening member which are used for the description of the 6th Embodiment of this invention. It is a side side explanatory view of the mist recovery device in 7th Embodiment of this invention. It is a side side explanatory view of the mist recovery device in 8th Embodiment of this invention. It is a plan sectional explanatory view of the part from the exhaust fan to the exhaust port in the 9th Embodiment of this invention. It is a plan sectional explanatory view of the part from the exhaust fan to the exhaust port in the tenth embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. A printing device as a device for discharging a liquid according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 3. 1 is a front explanatory view of the printing apparatus, FIG. 2 is a side explanatory view, and FIG. 3 is a plan explanatory view.

In the printing apparatus 1, a cassette 200 having a platen member 300 for holding a fabric or the like as a printing member can be attached to and detached from the apparatus main body 100, and the stage 111 and the stage 111 move forward and backward while holding the cassette 200. It is provided with a printing means 112 for printing on a member to be printed held in the held cassette 200.

The stage 111 is attached to the slider member 113, and the slider member 113 is held by the guide members 114 and 114 so as to be reciprocally movable in the arrow Y direction (feeding direction). The stage 111 reciprocates as the slider member 113 reciprocates in the feed direction. As a result, the cassette 200 detachably mounted on the stage 111 and the printed member held by the platen member 300 of the cassette 200 also reciprocate in the Y direction.

The printing means 112 has a carriage 121 that moves in the direction of arrow X (main scanning direction) with respect to the stage 111, and the carriage 121 is provided with a liquid discharge head 122 that is a liquid discharge means for discharging liquid.

Further, on one end side in the direction of the arrow X, a maintenance unit 130 for maintaining the liquid discharge head 122 is arranged below the carriage 121. The maintenance unit 130 includes a cap 131 and the like for capping the nozzle surface of the liquid discharge head 122.

In the printing apparatus 1, the cassette 200 is mounted and held on the stage 111 in the apparatus main body 100 in a state where the printed member is set on the platen member 300 of the cassette 200. Then, the required image is printed on the member to be printed by repeating the movement of the stage 111 in the arrow Y direction and the reciprocating movement of the printing means 112 (carriage 121) in the arrow X direction.

Here, the attachment / detachment side of the cassette 200 with respect to the apparatus main body 100 is the front side of the apparatus main body 100, and the opposite side of the front side in the arrow Y direction is the rear side of the apparatus main body 100.

In the printing apparatus 1 of the present embodiment, the mist collecting devices 500 and 500 according to the present invention are arranged on both sides of the apparatus main body 100 and on the rear side of the apparatus main body 100.

The mist recovery device 500 includes an exhaust duct 501, a filter 502 for collecting mist, an exhaust fan 503 for generating an air flow passing through the filter 502, a first opening member 504, and a second opening member 505. There is.

The exhaust duct 501 has a suction port 511 at substantially the same height as the cassette 200, and sucks air from the suction duct portion 501a that guides the sucked air upward and the suction duct portion 501a via the filter 502. It includes an intermediate duct portion 501b in which the exhaust fan 503 is arranged, and an exhaust duct portion 501c that guides the air sent from the exhaust fan 503 toward the rear exhaust port 515.

Here, the width of the discharge duct portion 501c in the arrow Y direction is wider than the width of the intermediate duct portion 501b in the arrow X direction.

In the exhaust duct portion 501c, the first opening member 504 and the second opening that form a plurality of opening members sequentially from the exhaust fan 503 side on the downstream side of the exhaust fan 503 and on the upstream side of the exhaust port 515. The member 505 is arranged.

As a result, the width of the first opening member 504 and the second opening member 505 in the direction of arrow X is wider than the diameter of the exhaust fan 503. That is, the exhaust fan 503 is biased with respect to the first opening member 504 and the second opening member 505.

Next, the air flow when the mist recovery device 500 is driven will be described with reference to FIG. FIG. 4 is a side explanatory view for the same explanation.

By driving the exhaust fan 503 of the mist recovery device 500, the air in the device main body 100 is sucked from the suction port 511 of the exhaust duct 501, and an air flow 600 is generated. The air flow 600 is sucked into the suction duct portion 501a from the vicinity of the carriage 121, passes through the filter 502, is sent out from the exhaust fan 503, passes through the first opening member 504 and the second opening member 505, and passes through the exhaust port 515. It is blown out.

Next, the first opening member and the second opening member in the first embodiment will be described with reference to FIGS. 5 and 6. 5A and 5B are front explanatory views for explaining the first opening member and the second opening member, FIG. 5A is a front explanatory view of the first opening member, FIG. 5B is a second opening member, and FIG. 5C is a first. It is explanatory drawing which saw from the direction which 1 opening member and 2nd opening member overlap. FIG. 6 is a plan sectional explanatory view of a portion from the exhaust fan to the exhaust port.

The first opening member 504 has a plurality of slit-shaped first openings 504a through which the airflow 600 passes, and wall portions 504b other than the first opening 504a that blocks the passage of the airflow 600.

The second opening member 505 has a plurality of slit-shaped second openings 505a through which the airflow 600 passes, and a wall portion 505b other than the second opening 505a that blocks the passage of the airflow 600.

In the present embodiment, the plurality of first openings 504a of the first opening member 504 and the second openings 505a of the plurality of second opening members 505 are arranged in the X direction, respectively.

Then, as shown in FIGS. 5 (c) and 6, of the first opening member 504 and the second opening member 505 which are two adjacent opening members, the first opening member 504 which is the opening member on the upstream side The first opening 504a is arranged so as to face the wall portion 505b of the second opening member 505 which is the opening member on the downstream side.

In the present embodiment, all the first openings 504a of the first opening member 504 on the upstream side face the wall portion 505b of the second opening member 505 on the downstream side, but the configuration is limited to this. It's not a thing.

With this configuration, as shown in FIG. 6, the airflow 600 blown out from the exhaust fan 503 directly flows into the first opening 504a of the first opening member 504, or bends in the direction at the wall portion 504b. And pass through the first opening 504a.

In the present embodiment, the airflow 600 that has passed through the first opening 504a of the first opening member 504 is bent in the direction by colliding with the wall portion 505b of the second opening member 505, and the second opening member 505 It passes through the second opening 505a and is discharged to the outside from the exhaust port 515.

Here, the airflow 600 blown out from the exhaust fan 503 contains mist that was not recovered by the filter 502.

At this time, the airflow 600 passes through the first opening 504a of the first opening member 504 and the second opening 505a of the second opening member 505 while meandering, so that the flow velocity of the airflow 600 is reduced. Therefore, the mist contained in the air flow 600 tends to adhere to the wall surface of the exhaust duct 501, the wall portion 504b of the first opening member 504, the wall portion 505b of the second opening member 505, and the like.

As a result, the amount of mist discharged from the exhaust port 515 is reduced.

By using the first opening 504a and the second opening 505a as slit-shaped openings as in the present embodiment, the shape can be simplified.

Next, the second embodiment of the present invention will be described with reference to FIG. 7. FIG. 7 is a plan sectional explanatory view of a portion from the exhaust fan to the exhaust port in the same embodiment.

In the present embodiment, as in the first embodiment, the exhaust fan 503 is arranged unevenly with respect to the first opening member 504 and the second opening member 505.

The first opening member 504 is provided with a first opening 504a having a width W1. On the other hand, the second opening member 505 is provided with three types of second openings 505a1, 505a2, 505a3 having widths W1 to W3 as the distance from the exhaust fan 503 increases.

That is, the second opening member 505 is provided with the second openings 505a2 and 505a3 having a larger opening area than the second opening 505a1 on the side closer to the exhaust fan 503 on the side relatively far from the exhaust fan 503. There is. Further, the opening area of the second opening 505a2, 505a3 is larger than that of the first opening 504a of the first opening member 504.

Further, in the present embodiment, a part of the first opening 504a of the first opening member 504 on the upstream side faces the wall portion 505b of the second opening member 505 on the downstream side, and the remaining first opening portion The 504a is configured to face the second openings 505a2 and 505a3 of the second opening member 505.

By arranging the exhaust fan 503 in a biased manner with respect to the second opening member 505 in this way, the opening areas of the second openings 505a2 and 505a3 in the portion of the second opening member 505 far from the exhaust fan 503 are increased. However, the airflow 600 is meandered by the second opening member 505 and is exhausted from the exhaust port 515.

Further, by making the opening area of the second opening 505a2.505a3 in the portion far from the exhaust fan 503 of the second opening member 505 larger than the opening area of the second opening 505a1 in the near portion, the airflow 600 is the second opening. It becomes easier to flow on the 505a2 and 505a3 sides.

Therefore, normally, the displacement is larger in the portion closer to the exhaust fan 503, but by changing the opening area (size) of the second opening, the exhaust port 515 is dispersed and exhausted. ..

As a result, the airflow 600 including the exhausted mist is discharged over a wider range in a state where the flow velocity is slower, so that the adhesion of the mist to the outside of the device can be reduced.

Next, the third embodiment of the present invention will be described with reference to FIGS. 8 and 9. 8A and 8B are front explanatory views for explaining the first opening member and the second opening member in the same embodiment, FIG. 8A is a frontal explanatory view of the first opening member, and FIG. 8B is a second opening member, (c). ) Is an explanatory view seen from the direction in which the first opening member and the second opening member overlap. FIG. 9 is a plan sectional explanatory view of a portion from the exhaust fan to the exhaust port.

In the present embodiment, the width of the exhaust fan 503 in the X direction and the width of the first opening member 504 and the second opening member 505 are substantially the same.

The first opening member 504 has a plurality of first openings 504a arranged in a matrix, and the portion other than the first opening 504a is a wall portion 504b. Similarly, the second opening member 505 has a plurality of second openings 505a arranged in a matrix, and the portion other than the second opening 505a is a wall portion 505b.

Then, as shown in FIGS. 8C and 9, the entire (may be a part) first opening 504a of the first opening member 504 faces the wall portion 505b of the second opening member 505. There is.

As a result, as in the first embodiment, the airflow 600 exhausted from the exhaust fan 503 meanders and passes through the first opening 504a of the first opening member 504 and the second opening 505a of the second opening member 505. Then, it is discharged from the exhaust port 515.

At this time, since the first opening 504a of the first opening member 504 is arranged in a matrix and faces the wall portion 505b of the second opening member 505, the airflow 600 is not only in the direction of arrow X but also in the direction of arrow Z. The flow of the airflow 600 is disturbed, and the airflow 600 produces a more complicated flow than that of the first embodiment.

As a result, the mist discharged from the exhaust port 515 can be further reduced.

Next, a fourth embodiment of the present invention will be described with reference to FIG. 10A and 10B are front explanatory views for explaining the first opening member and the second opening member in the same embodiment, FIG. 10A is a frontal explanatory view of the first opening member, and FIG. 10B is a second opening member, (c). ) Is an explanatory view seen from the direction in which the first opening member and the second opening member overlap.

In the present embodiment, the plurality of slit-shaped first openings 504a of the first opening member 504 and the plurality of slit-shaped second openings 505a of the second opening member 505 are arranged side by side in the Z direction.

Even with such a configuration, as in the above embodiment, the airflow 600 from the exhaust fan 503 meanders and is disturbed, so that the mist discharged from the exhaust port 515 can be reduced.

Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 11 is a plan sectional explanatory view of a portion from the exhaust fan to the exhaust port in the same embodiment.

In the present embodiment, the first opening member 504 and the second opening member 505 of the second embodiment are integrated by a cross-linking portion 506.

With such a configuration, the number of parts can be reduced and the assembly work becomes easy.

Further, the first opening member and the second opening member can be integrated with the exhaust duct 501.

Next, the sixth embodiment of the present invention will be described with reference to FIG. 12A and 12B are front explanatory views provided for explaining the first opening member and the second opening member in the same embodiment, FIG. 12A is a frontal explanatory view of the first opening member, and FIG. 12B is a second opening member, (c). ) Is an explanatory view seen from the direction in which the first opening member and the second opening member overlap.

In the present embodiment, the first opening member 504 has a plurality of first openings 504a arranged in a checkered pattern (checker shape), and the portion other than the first opening 504a is a wall portion 504b. Similarly, the second opening member 505 has a plurality of second openings 505a arranged in a checkered pattern (checker shape), and the portion other than the second opening 505a is a wall portion 505b.

Then, as shown in FIG. 8 (c), all (may be a part) of the first opening 504a of the first opening member 504 faces the wall portion 505b of the second opening member 505.

With this configuration, similar to the second embodiment, it is possible to generate a more complicated flow and further reduce the mist discharged from the exhaust port 515.

Next, a seventh embodiment of the present invention will be described with reference to FIG. FIG. 13 is a side explanatory view of the mist recovery device in the same embodiment.

In the present embodiment, the exhaust fan 503 is arranged so as to be tilted so that the downstream side faces diagonally upward so that the exhaust direction is slanted with respect to the alignment direction of the first opening member 504 and the second opening member 505. ..

As a result, the airflow 600 discharged from the exhaust fan 503 does not directly face the first opening member 504 and the second opening member 505, so that the airflow can be further disturbed and the mist discharged from the exhaust port 515 is further reduced. can do.

Next, the eighth embodiment of the present invention will be described with reference to FIG. FIG. 14 is a side explanatory view of the mist recovery device in the same embodiment.

In the present embodiment, as in the sixth embodiment, the exhaust fan 503 faces diagonally upward on the downstream side so that the exhaust direction is slanted with respect to the alignment direction of the first opening member 504 and the second opening member 505. It is arranged at an angle to the posture.

Then, as the second opening member 505, a member in which the size of the opening area is changed in the vertical direction (Z direction) is used. Here, the second opening 505a of the second opening member 505 forms the second openings 505a1 and 505a2 in which the opening area increases as the distance from the exhaust fan 503 increases.

As a result, even when the exhaust fan 503 is arranged diagonally, the airflow 600 is dispersed and exhausted over the entire exhaust port 515 as in the second embodiment, and the flow velocity is slower in a wider range. Since it is discharged at, it is possible to reduce the adhesion of mist to the outside of the device.

Next, a ninth embodiment of the present invention will be described with reference to FIG. FIG. 15 is a plan sectional explanatory view of a portion from the exhaust fan to the exhaust port in the same embodiment.

In the present embodiment, the first opening portion 504a, which is an opening member on the upstream side, is a part of the wall portion 505b of the second opening member 505, which is an opening member on the downstream side. It is configured to face the above.

Even with such a configuration, the airflow 600 can be disturbed to slow down the flow velocity, and the mist discharged from the exhaust port 515 can be reduced.

Next, the tenth embodiment of the present invention will be described with reference to FIG. FIG. 16 is a plan sectional explanatory view of a portion from the exhaust fan to the exhaust port in the same embodiment.

In the present embodiment, the first opening member 504, the second opening member 505, and the third opening member 507, which are three opening members, are sequentially arranged. The third opening member 507 has a third opening 507a and a wall portion 507b.

Opposing relationship between the first opening 504a of the first opening member 504 and the wall portion 505b of the second opening member 505, which are two adjacent opening members, the second opening 505a and the third opening of the second opening member 505. The facing relationship of the wall portions 507b of the member 507 can be the same as described in each of the above-described embodiments.

By arranging three or more opening members in this way, the mist discharged from the exhaust port 515 can be further reduced.

In the present application, the liquid to be discharged may have a viscosity and surface tension that can be discharged from the head, and is not particularly limited, but the viscosity becomes 30 mPa · s or less at room temperature, under normal pressure, or by heating or cooling. It is preferable that it is a thing. More specifically, solvents such as water and organic solvents, colorants such as dyes and pigments, polymerizable compounds, resins, functionalizing materials such as surfactants, biocompatible materials such as DNA, amino acids and proteins, and calcium. , Solvents, suspensions, emulsions, etc. containing edible materials such as natural pigments, such as inks for inkjets, surface treatment liquids, components of electronic and light emitting elements, and formation of electronic circuit resist patterns. It can be used in applications such as liquids and material liquids for three-dimensional modeling.

Piezoelectric actuators (laminated piezoelectric elements and thin-film piezoelectric elements), thermal actuators that use electric heat conversion elements such as heat-generating resistors, and electrostatic actuators that consist of a vibrating plate and counter electrodes are used as energy sources for discharging liquid. Includes what to do.

The "device for discharging a liquid" includes a device provided with a liquid discharge head or a liquid discharge unit and driving the liquid discharge head to discharge the liquid. The device for discharging a liquid includes not only a device capable of discharging a liquid to a device to which the liquid can adhere, but also a device for discharging the liquid into the air or into the liquid.

The "device for discharging the liquid" may include means for feeding, transporting, and discharging paper to which the liquid can adhere, as well as a pretreatment device, a posttreatment device, and the like.

For example, as a "device that ejects a liquid", an image forming device that is a device that ejects ink to form an image on paper, and a three-dimensional model (three-dimensional model) are formed in layers in order to form a three-dimensional model. There is a three-dimensional modeling device (three-dimensional modeling device) that discharges the modeling liquid into the powder layer.

Further, the "device for discharging a liquid" is not limited to a device in which a significant image such as characters and figures is visualized by the discharged liquid. For example, those that form patterns that have no meaning in themselves and those that form a three-dimensional image are also included.

The above-mentioned "thing to which a liquid can adhere" means a material to which a liquid can adhere at least temporarily, such as a material to which the liquid adheres and adheres, and a material to which the liquid adheres and permeates. Specific examples include media such as paper, recording paper, recording paper, film, cloth and other recording media, electronic substrates, electronic components such as piezoelectric elements, powder layers (powder layers), organ models, and inspection cells. Yes, and includes everything to which the liquid adheres, unless otherwise specified.

The material of the above-mentioned "material to which a liquid can adhere" may be paper, thread, fiber, fabric, leather, metal, plastic, glass, wood, ceramics or the like as long as the liquid can adhere even temporarily.

Further, the "device for discharging the liquid" includes, but is not limited to, a device in which the liquid discharge head and the device to which the liquid can adhere move relatively. Specific examples include a serial type device that moves the liquid discharge head, a line type device that does not move the liquid discharge head, and the like.

In addition, as a "device for ejecting a liquid", a treatment liquid coating device for ejecting a treatment liquid to the paper in order to apply the treatment liquid to the surface of the paper for the purpose of modifying the surface of the paper, etc. There is an injection granulator that granulates fine particles of the raw material by injecting a composition liquid in which the raw material is dispersed in the solution through a nozzle.

In addition, in the term of this application, image formation, recording, printing, printing, printing, modeling, etc. are all synonymous.

1 Printing device 111 Stage 112 Printing means 200 Cassette 300 Platen member 500 Mist recovery device 501 Exhaust duct 502 Filter 503 Exhaust fan 504 1st opening member 505 2nd opening member 507 3rd opening member 511 Suction port 515 Exhaust port

The present invention relates to a device for discharging a liquid .

Conventionally, for example, a filter for filtering and discharging air and an exhaust duct for flowing and discharging air toward the filter are provided, and the exhaust duct is provided along the exhaust direction on the opposite upper inner surface and lower inner surface. It is known that a plurality of partition plates arranged alternately are provided, and the plurality of partition plates include a partition plate formed so as to be inclined in the direction opposite to the exhaust direction (Patent Document 1).

In order to solve the above problems, the device for discharging the liquid according to the present invention is
A holding member that holds the member to be printed and
A liquid discharge head that can be reciprocated and discharges liquid to the printed member,
A stage that holds the holding member and can move forward and backward in the feed direction of the printed member in a direction orthogonal to the moving direction of the liquid discharge head.
A device that discharges a liquid equipped with an exhaust duct and a mist recovery device having an exhaust fan.
When viewed from the direction in which the liquid discharge head reciprocates, the lower end of the suction port of the exhaust duct of the mist recovery device is below the upper surface of the holding member.
It was configured.

Claims (7)

An exhaust fan that generates airflow and
It has a plurality of opening members sequentially arranged side by side on the downstream side of the exhaust fan.
The opening member is provided with an opening and a wall portion, and the opening member is provided with an opening and a wall portion.
Of the two adjacent opening members, at least a part of the opening of the opening member on the upstream side faces the wall portion of the opening member on the downstream side. Recovery device. The mist collecting device according to claim 1, wherein the opening of the opening member has a slit shape. The mist recovery device according to claim 1 or 2, wherein the exhaust fan is arranged unevenly with respect to the opening member. The plurality of opening members include the opening member whose opening area on the side farther from the exhaust fan is larger than the opening area of the opening on the side closer to the exhaust fan. The mist recovery device according to any one of 1 to 3. The mist recovery device according to any one of claims 1 to 4, wherein the plurality of opening members are integrated with each other. The mist recovery device according to any one of claims 1 to 5, wherein the exhaust direction of the exhaust fan is oblique with respect to the arrangement direction of the plurality of opening members. A liquid discharge means that discharges liquid and
A device for discharging a liquid, which comprises the mist recovery device according to any one of claims 1 to 6.

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