JP6840959B2 - Head unit, device that discharges liquid - Google Patents

Description

The present invention relates to a head unit and a device for discharging a liquid.

As a head unit, a multi-array head in which a plurality of short heads (head chips) are arranged to form a long head is known. When arranging a plurality of short heads in this way, it is necessary to be able to adjust the position of each head.

Conventionally, regarding head position adjustment, a flat surface formed by a first adjusting portion capable of fixing the head on the carriage at different positions in a direction intersecting the main scanning direction and a portion of the print medium facing the print head on the carriage. There is known one provided with a second adjusting portion that can be fixed at different rotation angles with the direction of intersection as an axis (Patent Document 1).

Japanese Unexamined Patent Publication No. 2008-132795

By the way, the outer shape of the head is longer than the length of the dot forming element array in which the dot forming elements such as the nozzle for discharging the liquid are arranged.

Therefore, when a plurality of heads having a short dot forming element row are arranged to form a head unit in which the dot forming elements are arranged at the same interval, the direction along the dot forming element row (this is referred to as the "head arrangement direction"). .) Narrows the gap between adjacent heads.

Therefore, when it is not possible to arrange the head position adjusting means between the adjacent heads in the head alignment direction, it becomes necessary to provide the position adjusting means for adjusting the position from a direction other than the head alignment direction, and the head unit becomes large. There is a problem to do.

The present invention has been made in view of the above problems, and an object of the present invention is to suppress an increase in size of the head unit.

In order to solve the above problems, the head unit according to the present invention is
With multiple heads
A head mounting member in which the plurality of heads are arranged side by side is provided.
The head mounting member is provided with a position adjusting member for adjusting the position of the head.
The head has a notch at an end in the head alignment direction.
The notches of the adjacent heads face each other.
The position adjusting member is arranged between the facing notches, and the position adjusting member is arranged .
The position adjusting member has an eccentric cam member and has an eccentric cam member.
The eccentric cam member is arranged so as to straddle the two facing notches .

According to the present invention, it is possible to suppress an increase in size of the head unit.

It is a schematic plan explanatory view of the head unit which concerns on 1st Embodiment of this invention. It is a front explanatory view of FIG. It is a plane explanatory view of a head. It is a plane explanatory view of a head mounting member. It is an enlarged explanatory view of the cutout part. It is a plane explanatory view of the head unit of the comparative example 1. FIG. It is a plane explanatory view of the head unit of the comparative example 2. FIG. It is an external perspective explanatory view of an example of a head. It is a plane explanatory view which provides the explanation of the position adjustment mechanism of a head. Similarly, it is sectional drawing of the pin member part. It is a plane explanatory view of the head unit which concerns on 2nd Embodiment of this invention. It is a plane explanatory drawing which provides for the explanation of the 3rd Embodiment of this invention. It is sectional drawing which follows the direction orthogonal to the nozzle arrangement direction of an example of the liquid discharge head which constitutes the head. It is an enlarged cross-sectional explanatory view of the main part of FIG. Similarly, it is a cross-sectional explanatory view of a main part along the nozzle arrangement direction. It is explanatory drawing of an example of the apparatus which discharges a liquid which concerns on this invention. It is a plane explanatory view of the liquid discharge unit of this apparatus.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The head unit according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 5. 1 is a schematic plan explanatory view of the head unit, FIG. 2 is a front explanatory view of FIG. 1, FIG. 3 is a plan explanatory view of a head, FIG. 4 is a plan explanatory view of a head mounting member, and FIG. 5 is an enlarged view of a notched portion. It is explanatory drawing.

The head unit 100 includes a plurality of (here, three) heads 101, and a head mounting member 102 in which a plurality of heads (head chips) 101 are arranged side by side.

The head 101 has a nozzle plate 40 provided with nozzle rows 11 in which nozzles 10 as a plurality of dot forming elements are arranged, a frame member 20, and the like.

The plurality of heads 101 are in a direction along the nozzle arrangement direction (this is referred to as a "head arrangement direction" and is also referred to as an X direction). It is arranged in a staggered pattern. In this case, one or more nozzles 10 at the end of the nozzle row 11 are overlapped with adjacent heads 101 and 101 in a direction orthogonal to the head arrangement direction (this is also referred to as "Y direction"). As the number of overlapping nozzles is increased, the width W1 of the gap 103 between the two heads 101 and 101 adjacent to each other in the head arrangement direction becomes narrower.

The head 101 has V-shaped notches 111 and 112 in a plan view at both ends in the head arrangement direction (X direction). Here, the frame member 20 is provided with notches 111 and 112.

More specifically, the frame member 20 is provided with a collar portion 20a (see FIG. 3), and the head 101 is arranged so that the collar portion 20a faces the surface of the head mounting member 102. It is attached to the attachment member 102. Notches 111 and 112 are provided in the collar portion 20a of the frame member 20.

Of the two heads 101 adjacent to each other in the head alignment direction, the notch 111 of one head 101 and the notch 112 of the other head 101 face each other. That is, the positions of the heads 101 in the direction orthogonal to the head arrangement direction (X direction) in which the notches 111 and 112 are provided (this is also referred to as “Y direction”) are the same.

The head mounting member 102 is provided with an opening 120 into which a part of the head 101 is inserted, an eccentric cam member 121 as a position adjusting member for adjusting the position (tilt position) of the head 101, and a pin member 122. .. The eccentric cam member 121 is rotatably attached to the head mounting member 102 about the shaft 121a.

Further, an elastic member 124 that pressurizes the head 101 toward the pin member 122 side in the X direction and an elastic member 125 that pressurizes the head 101 from both sides in the Y direction are attached to the head mounting member 102.

Here, in one head 101, the eccentric cam member 121 is in contact with one notch 111 side, and the pin member 122 is in contact with the other notch 112 side. The inclination of the head 101 (inclination θ with respect to the head alignment direction) can be adjusted by rotating the eccentric cam member 121 in a state where the head 101 is abutted against the pin member 122 by the elastic member 104.

At this time, the cam member 121 is arranged between the notch portions 111 and the notch portions 112 of the two heads 101 and 101 that are adjacent to each other in the head alignment direction.

With this configuration, even if the width W1 of the gap 103 between the two heads 101 and 101 adjacent to each other in the head alignment direction is narrow, the eccentric cam member 121 and the pin as the position adjusting member are sandwiched between the heads 101 and 101. The member 122 can be arranged.

Further, since the notch 111 and the notch 112 of the two heads 101 and 101 adjacent to each other in the head alignment direction face each other, the eccentricity is arranged in the notch 111 of one head 101 as shown in FIG. A part of the cam member 121 can be inserted into the notch 112 of the other head 101 and arranged.

As a result, the width W1 of the gap 103 between the two heads 101 and 101 adjacent to each other in the head alignment direction can be further narrowed. By narrowing the width W1 of the gap 103, the number of overlapping nozzles can be increased.

In the state of FIG. 5, a part of the eccentric cam member 121 on the long axis side is inserted into the notch 112, so that the length of the long axis of the eccentric cam member 121 (the farthest from the center point of the rotation axis). The width W1 can be shorter than the distance to the point on the outer circumference).

Further, it is not necessary to arrange the eccentric cam member 121 as a position adjusting member between the two heads 101 and 101 adjacent to each other in the direction orthogonal to the head arrangement direction, and the length L1 of the gap 104 can be narrowed.

As a result, it is possible to suppress the increase in size of the head unit 100.

Here, Comparative Example 1 will be described with reference to FIG. FIG. 6 is a plan explanatory view of the head unit of Comparative Example 1.

The head 101 of Comparative Example 1 has a configuration in which notches are not provided at both ends in the head alignment direction.

In this case, if the range of motion of the eccentric cam member 121 as the position adjusting member is wider than the width W2 of the gap 103 of the heads 101 and 101 adjacent to each other in the head alignment direction, the eccentric cam member 121 may be arranged in the gap 103. Can not.

Therefore, the eccentric cam member 121 as the position adjusting member is arranged at a position where it comes into contact with the side portion of the head 101 from a direction (Y direction) orthogonal to the head arrangement direction. As a result, the length L2 of the gap 104 between the heads 101 and 101 adjacent to each other in the direction orthogonal to the head arrangement direction (Y direction) is longer than the length L1 of the gap 104 of the present embodiment (L2> L1).

Further, the width W2 of the gap 103 between the heads 101 and 101 adjacent to each other in the head alignment direction is determined by the number of nozzles overlapping with the head outer diameter dimension, but when the width W2 becomes narrower than the outer diameter dimension of the pin member 122, the pin The member 122 cannot be arranged either.

As a result, it is necessary to secure the width W2 of the gap 103 even if the number of overlapping nozzles is reduced, and the width W2 of the gap 103 of the heads 101 and 101 adjacent to each other in the head arrangement direction is the width W1 of the gap 103 of the present embodiment. Wider (W2> W1).

On the other hand, in the present embodiment, a part or all of the pin member 122 and the eccentric cam member 121 arranged in the gap 103 of the heads 101 and 101 adjacent to each other in the head alignment direction are inserted into the notches 112 and 111. Therefore, the width W1 of the gap 103 can be narrowed. Further, since it is not necessary to arrange the eccentric cam member 121 in the direction orthogonal to the head alignment direction, the length L1 of the gap 104 can be narrowed.

Therefore, the head unit according to the present embodiment can be made smaller than the head unit of Comparative Example 1.

Next, Comparative Example 2 will be described with reference to FIG. 7. FIG. 7 is a plan explanatory view of the head unit of Comparative Example 2.

In Comparative Example 2, the head 101 has notches 111 and 112 at both ends in the head alignment direction, as in the present embodiment. However, unlike the present embodiment, the cutouts 111 and 112 are provided at different positions in the direction orthogonal to the head alignment direction, and the cutouts 111 and 112 do not face each other between the two adjacent heads 101 and 101. ..

In this configuration, the eccentric cam member 121 and the pin member 122 can be arranged in the notches 111 and 112 as in the present embodiment.

However, since the notches 111 and 112 do not face each other, the eccentric cam member 121 arranged in the notch 111 of one head 101 is the other head 101 as in the present embodiment described with reference to FIG. Cannot enter the notch 112 of.

Therefore, the width W3 of the gap 103 of Comparative Example 2 is wider than the width W1 of the gap 103 of the present embodiment (W3> W1), and is larger than that of the present embodiment.

Next, an example of the head 101 will be described with reference to FIG. FIG. 8 is an explanatory view of an external perspective of the head.

The head 101 is a liquid discharge head, and as described above, has a nozzle plate 40 provided with a nozzle row 11 and a frame member 20, and notches 111 and 112 at both ends of the frame member 20 in the longitudinal direction, respectively. Is provided. Further, the frame member 20 is provided with a hole 21 for fixing the head mounting member 102 with a fastening member or the like.

The cutouts 111 and 112 are both V-shaped and have the same shape. Further, the expanding angle θ is set to 60 °. However, the shape, angle, and shape are not limited to the same.

Next, the position adjusting mechanism of the head 101 will be described with reference to FIGS. 9 and 10. FIG. 9 is a plan view for explaining the position adjusting mechanism, and FIG. 10 is a cross-sectional explanatory view of the pin member portion. Note that FIG. 9 is a plan explanatory view seen from the nozzle surface side, and the head mounting member is omitted.

The head mounting member 102, which is a head mounting member, is provided with a pin member 122 that contacts the notch 112 of the head 101 and an elastic member 124 that pressurizes the head 101 toward the pin member 122.

As shown in FIG. 10, the pin member 122 is provided with a screw portion 122b so as to be rotatable and retractable with respect to the head mounting member 102, and has a tapered portion 122a at a portion corresponding to the wall surface of the notch portion 112.

Therefore, by rotating the pin member 122, the pin member 122 moves in the height direction (arrow C direction), and the head 101 moves in the head alignment direction (X direction), so that the position of the head 101 in the X direction can be adjusted.

Further, the head mounting member 102 is provided with an eccentric cam member 121 that abuts and contacts the notch 111 of the head 101.

By rotating the eccentric cam member 121 in the direction of arrow A1 or A2, the head 101 rotates in the direction of arrow B1 or B2 about the pin member 122, so that the inclination (position in the θ direction) of the head 101 in the XY plane is adjusted. can do.

Next, the second embodiment of the present invention will be described with reference to FIG. FIG. 11 is a plan explanatory view of the head unit according to the same embodiment.

In the present embodiment, the head 101 is attached to the intermediate member 110, and the intermediate member 110 is attached to the head attachment member 102 which is a head attachment member.

The intermediate member 110 is a member attached to both of the head 101 and the head mounting member 102 with the intermediate member 110 interposed therebetween. For example, the intermediate member 110 may be attached to the frame member 20 which is a component of the head 101 to form a collar shape with respect to the head 101. Then, by fixing the intermediate member 110 to the head mounting member 102, the head 101 can be mounted to the head mounting member 102.

And here, the intermediate member 110 is provided with the same cutouts 111 and 112 as described in the first embodiment.

The head mounting member 102 is provided with an eccentric cam member 121 that contacts the notch 111 of the intermediate member 110, a pin member 122 that contacts the notch 112, and other elastic members 124 and 125.

Even with this configuration, even when the heads that must be temporarily held by the intermediate members are arranged, the gap between the adjacent intermediate members can be narrowed, and the increase in size can be suppressed.

Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 12 is a plan explanatory view of the head unit used for the description of the embodiment.

In the present embodiment, the heads 101 are arranged in the lateral direction of the heads 101. The head 101 is provided with notches 111 and 112 at positions facing each other in the head alignment direction. The head mounting member 102 is provided with an eccentric cam member 121 that contacts the notch 111 of the head 101, a pin member 122 that contacts the notch 112, and other elastic members 124 and 125. The head mounting member 102 here is, for example, a carriage.

With this configuration, even when the heads are arranged in the lateral direction, the gap between the heads can be narrowed, and the increase in size of the head unit can be suppressed.

Next, an example of the liquid discharge head constituting the head 101 will be described with reference to FIGS. 13 to 15. FIG. 13 is an explanatory cross-sectional view taken along the direction orthogonal to the nozzle arrangement direction of the liquid discharge head, FIG. 14 is an enlarged cross-sectional explanatory view of the main part of FIG. 13, and FIG. 15 is an explanatory cross-sectional view of the main part along the nozzle arrangement direction. ..

The liquid discharge head includes a nozzle plate 501 (corresponding to the nozzle plate 40 in FIG. 1), a flow path plate 502, a diaphragm 503 which is a wall surface member, a piezoelectric element 511 which is a pressure generating element, and a holding substrate. It includes a 550, a wiring member 560, and a frame member 570 (corresponding to the frame member 20 in FIG. 1) that also serves as a common liquid chamber member.

Here, the portion composed of the flow path plate 502, the diaphragm 503, and the piezoelectric element 511 is referred to as an “actuator substrate 520”. However, it does not mean that the actuator substrate 420 is joined to the nozzle plate 501 or the holding substrate 550 after an independent member is formed. Further, the flow path plate 502 and the diaphragm 503 are combined to form a flow path member.

A plurality of nozzles 504 (corresponding to the nozzle 10 in FIG. 1) for discharging a liquid are formed on the nozzle plate 501. Here, four nozzle rows in which the nozzles 504 are arranged are arranged.

The flow path plate 502, together with the nozzle plate 501 and the diaphragm 503, forms an individual liquid chamber 506 through which the nozzle 504 communicates, a fluid resistance portion 507 through which the individual liquid chamber 506 communicates, and a liquid introduction portion (passage) 508 through which the fluid resistance portion 507 communicates. doing.

The liquid introduction portion 508 leads to a common liquid chamber 510 formed by the frame member 570 via a passage 509 of the diaphragm 503 and an opening 551 that serves as a passage of the holding substrate 550.

The diaphragm 503 forms a deformable vibration region 530 that forms a part of the wall surface of the individual liquid chamber 506. A piezoelectric element 511 is provided integrally with the vibration region 530 on the surface of the vibration plate 503 on the opposite side of the vibration region 530 from the individual liquid chamber 506, and the vibration region 530 and the piezoelectric element 511 form a piezoelectric actuator. There is.

The piezoelectric element 511 is configured by sequentially laminating and forming a lower electrode 513, a piezoelectric layer (piezoelectric body) 512, and an upper electrode 514 from the vibration region 530 side. An insulating film 521 is formed on the piezoelectric element 511.

The lower electrode 513, which is a common electrode of the plurality of piezoelectric elements 511, is connected to the common electrode power supply wiring pattern 621 via the common wiring 515. As shown in FIG. 15, the lower electrode 513 is one electrode layer formed across all the piezoelectric elements 511 in the nozzle arrangement direction.

Further, the upper electrode 514, which is an individual electrode of the piezoelectric element 511, is connected to a drive IC (hereinafter, referred to as “driver IC”) 500, which is a drive circuit unit, via an individual wiring 516. The individual wiring 516 and the like are covered with an insulating film 522.

The driver IC 500 is mounted on the actuator substrate 520 by a method such as flip chip bonding so as to cover the region between the rows of piezoelectric element rows.

The driver IC 500 mounted on the actuator board 520 is connected to the individual electrode power supply wiring pattern 601 to which the drive waveform (drive signal) is supplied.

The wiring provided on the wiring member 60 is electrically connected to the driver IC 500, and the other end side of the wiring member 60 is connected to the control unit on the device main body side.

Then, on the actuator substrate 520, as described above, an opening 551 that serves as a flow path through the common liquid chamber 510 and the individual liquid chamber 506 side, a recess 552 that accommodates the piezoelectric element 511, and an opening 553 that accommodates the driver IC 500. The holding substrate 550 on which the is formed is provided.

The holding substrate 550 is joined to the diaphragm 503 side of the actuator substrate 520 with an adhesive.

The frame member 570 forms a common liquid chamber 510 that supplies liquid to each individual liquid chamber 506. The common liquid chamber 510 is provided corresponding to each of the four nozzle rows. Further, a liquid of a required color is supplied to the common liquid chamber 510 via a liquid supply port from the outside.

A damper member 590 is joined to the frame member 570. The damper member 590 has a deformable damper 591 that forms a part of the wall surface of the common liquid chamber 510, and a damper plate 592 that reinforces the damper 591.

The frame member 570 is joined to the outer peripheral portion of the nozzle plate 501 and the holding substrate 550 with an adhesive, and accommodates the actuator substrate 520 and the holding substrate 550 to form a frame of this head.

A nozzle cover member 545 that covers the peripheral edge of the nozzle plate 501 and a part of the outer peripheral surface of the frame member 570 is provided.

In this liquid discharge head, by applying a voltage from the driver IC 500 between the upper electrode 514 and the lower electrode 513 of the piezoelectric element 511, the piezoelectric layer 512 extends in the electrode stacking direction, that is, in the electric field direction, and is parallel to the vibration region 530. Shrinks in the right direction.

At this time, since the lower electrode 513 side is restrained by the vibration region 530, tensile stress is generated on the lower electrode 513 side of the vibration region 530, the vibration region 530 bends to the individual liquid chamber 506 side, and the liquid inside is applied. By pressing, the liquid is discharged from the nozzle 504.

In the above embodiment, the example in which the head is a liquid discharge head is described, but the present invention is not limited to this.

Next, an example of the device for discharging the liquid according to the present invention will be described with reference to FIGS. 16 and 17. FIG. 16 is an explanatory view of the device, and FIG. 17 is a plan explanatory view of the liquid discharge unit of the device.

This device includes a sheet material tray 401 loaded with the sheet material 400, a liquid discharge unit 200 for discharging the liquid to the sheet material 400, a transport unit 404 for transporting the sheet material 400 toward the liquid discharge unit 200, and the like. ing.

The sheet material 400 loaded on the sheet material tray 401 is conveyed by the roller 402 along the transfer path shown by the broken line. The sheet material 400 transported to the transport path is transported to the transport unit 404 via the timing matching and skew correction roller (so-called resist roller) pair 403.

The transport unit 404 includes a transport roller 405 that is driven at a predetermined timing, a tension roller 406, and an endless transport belt 407 that is hung between the rollers 405 and 406.

In order to hold the sheet material 400 by the transport belt 407 of the belt transport unit 404, means by electrostatic adsorption, adsorption by air suction, or other known means can be used.

The sheet material 400 is conveyed by the transfer unit 404 facing the liquid discharge unit 200, and the liquid is discharged from the liquid discharge unit 200 according to the image data to form an image.

The liquid discharge unit 200 includes liquid head units 211K, 211C, 211M, and 211Y composed of the plurality of head units 100 according to the first embodiment. The liquid head units 211K, 211C, 211M, 211Y discharge, for example, black (K) cyan (C), magenta (M), and yellow (Y) liquids.

Then, the sheet material 400 on which the image is formed by the liquid discharge unit 200 is conveyed to the decal unit 409 and decaled (curl corrected).

When the sheet material 400 that has passed through the decara unit 409 is discharged as it is, it is transported to the discharge roller 412 by the separation claw 410 through the transport path 411 and discharged.

Further, in the case of reverse discharge or double-sided printing, the separation claw 410 is switched counterclockwise from the position shown in the drawing, passes through the transport path 413, passes through the guide member 414, and is sent to the tapping roller 415. The sheet material 400 sent to the tapping roller 415 is conveyed in the opposite direction by the tapping roller 415 whose rotation direction is switched.

Then, in the case of reverse discharge as it is, it is sent to the discharge roller 412 through the transport path 417 via the second separation claw 416 and discharged.

Further, in the case of double-sided printing, the sheet material 400 conveyed in the reverse direction by the tapping roller 415 passes between the second separation claw 416 and the double-sided reversing roller 418 which are switched counterclockwise from the position shown in the drawing. , It passes through the transport path 419 and is sent to the resist roller pair 403.

Further, in order to maintain and recover the performance of each head 101 of the head unit 100 of the liquid discharge unit 200, a maintenance / recovery unit 408 is provided. The maintenance / recovery unit 408 wipes a cap 420 that caps the nozzle surface of each head 101 of the liquid discharge unit 200, a suction pump (not shown) connected to the cap 420, and a liquid remaining in the head when the liquid is sucked into the cap 420. It is equipped with a wiper 421.

Here, when the maintenance / recovery operation is performed, the liquid discharge unit 200 rises, the maintenance / recovery unit 408 moves to the lower part of the liquid discharge unit 200, and the maintenance / recovery operation is performed. Further, the cap 420 of the maintenance / recovery unit 408 also serves as a moisturizing cap for maintaining the humidity of each head 101 of the liquid discharge unit 200 during standby, and the liquid discharge unit 200 rises during non-printing to maintain and recover the unit 408. Moves to the bottom of the liquid discharge unit 200 to perform moisturizing capping.

In the present application, the "device for discharging a liquid" is a device including a liquid discharge unit and driving a liquid discharge head to discharge the liquid. The device for discharging the liquid includes not only a device capable of discharging the liquid to a device to which the liquid can adhere, but also a device for discharging the liquid toward the air or the liquid.

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

For example, as a "device that ejects a liquid", an image forming apparatus that ejects ink to form an image on paper, and a three-dimensional object (three-dimensional object) are formed in layers in order to form a three-dimensional object. 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 "material to which a liquid can adhere" means a material to which a liquid can adhere at least temporarily, such as one that adheres and adheres, and one that 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 anything to which the liquid adheres, unless otherwise specified.

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

The "liquid" also includes inks, treatment liquids, DNA samples, resists, pattern materials, binders, modeling liquids, or solutions and dispersions containing amino acids, proteins, and calcium.

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 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, raw materials. There is an injection granulator that granulates fine particles of raw materials by injecting a composition liquid in which the above-mentioned material is dispersed in a solution through a nozzle.

100 Head unit 101 Head 111, 112 Notch 121 Eccentric cam member (position adjustment member)
122 pin member 200 Liquid discharge unit 211K, 211C, 211M, 211Y Liquid discharge head unit

Claims (8)

With multiple heads
A head mounting member in which the plurality of heads are arranged side by side is provided.
The head mounting member is provided with a position adjusting member for adjusting the position of the head.
The head has a notch at an end in the head alignment direction.
The notches of the adjacent heads face each other.
The position adjusting member is arranged between the facing notches, and the position adjusting member is arranged .
The position adjusting member has an eccentric cam member and has an eccentric cam member.
The head unit is characterized in that the eccentric cam member is arranged so as to straddle the two facing notches. Width of the gap between the head adjacent in the head arrangement direction, the head unit according to claim 1, characterized in that less than the length of the long axis of the eccentric cam member. The head unit according to claim 1 or 2 , wherein the position adjusting member is in contact with the notch of one of the adjacent heads. The head unit according to any one of claims 1 to 3, wherein the plurality of heads are arranged in a staggered pattern. The head is a liquid discharge head and
At least, a nozzle plate having a nozzle row in which a plurality of nozzles for discharging a liquid are arranged, and a frame member are provided.
A collar portion is provided on the outer circumference of the frame member.
The head unit according to any one of claims 1 to 4 , wherein the notches are provided at both ends of the collar portion in the head arrangement direction. With multiple heads
An intermediate member holding the head and
A head mounting member in which a plurality of heads held by the intermediate member are arranged side by side is provided.
The head mounting member is provided with a position adjusting member for adjusting the position of the head.
The intermediate member holding the head has a notch at an end in the head alignment direction.
The notches of the intermediate member holding the adjacent heads face each other.
The position adjusting member is arranged between the facing notches, and the position adjusting member is arranged .
The position adjusting member has an eccentric cam member and has an eccentric cam member.
The head unit is characterized in that the eccentric cam member is arranged so as to straddle the two facing notches. The head unit according to claim 6 , wherein the head is a liquid discharge head that discharges a liquid. A device for discharging a liquid, which comprises the head unit according to claim 5 or 7.

Images