CN100471677C - Valve device and method for manufacturing valve device,pressure regulator, carriage, liquid ejecting apparatus - Google Patents

Valve device and method for manufacturing valve device,pressure regulator, carriage, liquid ejecting apparatus Download PDF

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Publication number
CN100471677C
CN100471677C CNB200480004664XA CN200480004664A CN100471677C CN 100471677 C CN100471677 C CN 100471677C CN B200480004664X A CNB200480004664X A CN B200480004664XA CN 200480004664 A CN200480004664 A CN 200480004664A CN 100471677 C CN100471677 C CN 100471677C
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liquid
passage
balancing gate
gate pit
valve body
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CN1750935A (en
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藤城武
高桥理
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Seiko Epson Corp
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Seiko Epson Corp
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  • Sliding Valves (AREA)
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Abstract

A valve device has a pressure chamber, which is connected to a liquid inlet and a liquid outlet and retains liquid, and a pressure regulator decreasing the pressure in the pressure chamber to a predetermined level. The pressure regulator has a pressure receiving member. When the pressure in the pressure chamber becomes lower than the predetermined level, the pressure receiving member is elastically deformed in an inward direction of the pressure chamber. The pressure regulator generates actuation force greater than the pressing force produced by the elastic deformation of the pressure receiving member. The pressure regulator is configured to be opened by the actuation force. When the pressure regulator is open, a fluid supply from the liquid inlet to the pressure chamber is permitted. It is thus possible to minimize the valve device.

Description

Valve gear, carrier, liquid injection device
Technical field
The present invention relates to have valve gear, pressure regulator, carrier, the liquid injection device of pressure regulator and the method that is used to make valve gear.
Background technology
A kind of pressure regulator that is disclosed in patent publication document 1 is thought a kind of pressure regulator of fluid pressure to constant level that be used to reduce.
As a kind of traditional inkjet type printer, known a kind of form (for example, publishing document 2) that supplies to the pressure air throttle that is installed in the ink tube by ink supply conduit by ink tube referring to patent.Then, ink is delivered to record head from the pressure air throttle, so that print.If quite a large amount of inks is retained in the ink tube, then the carrier of delivered ink water drum just becomes quite heavy.Then weight makes too much load affact the drive motor that is used for carrier.Therefore, aforementioned printer forms the no carrier type that described ink tube is not installed to carrier.The pressure air throttle that is arranged in the carrier suppresses because the change that moves back and forth the ink pressure that causes of carrier.
As the traditional inkjet type printer of another kind, known to have to be installed in to be used in the carrier referring to patent with the form (for example, publishing document 3) of providing ink to the sub-ink storing device of record head.Sub-ink storing device keeps ink temporarily.Main ink storing device as ink tube is arranged in the tube fixator that is installed in the printer body.Main ink storing device arrives sub-ink storing device by ink supply conduit with providing ink.
Yet, to publish in traditional pressure regulator of document 1 in patent, the core and the valve body of circular diaphragm are connected to each other by axle.In other words, valve shaft is positioned at the core of barrier film.Therefore, valve body compresses by the core of barrier film.Therefore, the power that is used to compress valve body is limited to the level corresponding to the membrane surface area.That is to say, can not produce the power that surpasses corresponding to the level of stating of barrier film pressure bearing area.This just is difficult to the minimum pressure adjuster.
In addition, the pressure bearing of pressure regulator part forms by circular diaphragm.Therefore, when pressure regulator adopted a plurality of quantity, loss in surface area (invalid surface area) just became quite big.Therefore, be difficult to adopt the pressure regulator of high integration mode.
If the aforementioned pressure regulator configuration is in the carrier of traditional inkjet type printer of aforementioned corresponding document, so that the ink pressure in the balancing gate pit of preservation ink is reduced to predeterminated level, carrier must have sizable thickness.Therefore, printer may become quite big on the whole.
Patent is published document 1: the disclosed patent of Japan is published document number: No.2001-227656
Patent is published document 2: the disclosed patent of Japan is published document number: No.2003-343757
Patent is published document 3: the disclosed patent of Japan is published document number: No.2003-251820
Summary of the invention
Therefore, one of purpose of the present invention be to provide a kind of can minimized valve gear, the manufacture method of pressure regulator, carrier, liquid injection device and this valve gear.
In order to realize above-mentioned purpose of the present invention, the invention provides a kind of valve gear.Valve gear has and is connected to the balancing gate pit that liquid inlet and liquid outlet are used to keep liquid, and the pressure regulator that the pressure in the balancing gate pit is reduced to predeterminated level.Pressure regulator has pressure bearing spare.When the pressure in the balancing gate pit becomes when being lower than predeterminated level, pressure bearing spare is in the direction strain in the balancing gate pit.Pressure regulator produces the actuation force of the thrust that produces greater than the strain by pressure bearing spare.Pressure regulator constitutes by actuation force and opens.When pressure regulator is opened, allow liquid to supply to the balancing gate pit by the liquid inlet.
Another aspect of the invention is a kind of pressure regulator.Pressure regulator keeps reducing to predeterminated level from inlet flowing liquid and the pressure liquid delivered to the balancing gate pit of outlet.Valve body moves back and forth being used to stop liquid to supply to the closing position of balancing gate pit and being used to allow liquid to supply between the enable possition of balancing gate pit.When the pressure in the balancing gate pit surpassed predeterminated level, valve body was positioned at closing position.Crushed element produces distortion corresponding to the pressure in the balancing gate pit.When the pressure in the balancing gate pit was reduced to predeterminated level, crushed element moved to the enable possition with valve body from closing position.When valve body was positioned at closing position, the excircle that hermetic unit closely contacts valve body and inlet partly was used for sealed entry.Retaining part advances valve body in the position than the axis of the more close inlet of hermetic unit to closing position.When the pressure in the balancing gate pit surpassed predeterminated level, retaining part kept valve body in closing position.
Another aspect of the invention is a kind of carrier.Carrier comprises liquid that maintenance enters from inlet and the balancing gate pit that liquid is delivered to outlet.Pressure regulator is reduced to predeterminated level with the pressure in the balancing gate pit.Jet head liquid sprays the liquid of supplying with from the balancing gate pit.Pressure regulator comprises valve body, crushed element, hermetic unit and retaining part.
Another aspect of the invention is a kind of have connect the carrier that liquid inlet and liquid outlet are used to keep the balancing gate pit of liquid.Carrier comprises pressure regulator and the jet head liquid that is used for the fluid pressure of balancing gate pit is reduced to predeterminated level.Pressure regulator has pressure bearing spare.Pressure bearing spare produces the actuation force of the thrust that produces greater than the strain by pressure bearing spare.Pressure regulator constitutes by actuation force and opens.
Another aspect of the invention is a kind of liquid injection device.Liquid injection device comprises the liquid retaining part that is used for temporarily keeping liquid.Jet head liquid has the nozzle that is used for atomizing of liquids.The feed tube for liquid line will supply to jet head liquid from the liquid of liquid retaining part.Valve gear is arranged in the feed tube for liquid line.Valve gear comprises the balancing gate pit that connection liquid inlet and liquid outlet are used to keep liquid.Liquid in the balancing gate pit sprays corresponding minimizing with the liquid that passes through jet head liquid, therefore, reduces the pressure in the balancing gate pit.Pressure regulator reduces to predeterminated level with the fluid pressure in the balancing gate pit.Pressure in the pressure regulator detected pressures chamber also stops selectively or allows and will supply to the balancing gate pit from the liquid of feed tube for liquid line.Pressure regulator has pressure bearing spare.
Another aspect of the invention is a kind of liquid injection device with carrier.Carrier comprises and is used to keep liquid that enters from inlet and balancing gate pit, pressure regulator and the fluid jetting head of liquid being delivered to outlet.Pressure regulator comprises valve body, produces crushed element, the hermetic unit that is used for sealed entry and the retaining part of distortion according to the pressure in the balancing gate pit.
Another aspect of the invention is a kind of method that is used to make valve gear.Valve gear comprises balancing gate pit and pressure regulator.Valve gear has the passage stopper that comprises the groove shape passage with opening.Pressure regulator comprises that valve body, sealing are used to limit the thin-film member and the compressing member of opening of the groove shape passage of balancing gate pit.Thin-film member fully approaches and is used for being resiliently deformable under the pressure of balancing gate pit changes.Thin-film member is fixed to the passage stopper, keeps the dome-shaped curved shape that outwards protrudes from the balancing gate pit simultaneously.When the pressure in the balancing gate pit becomes when being lower than predeterminated level, thin-film member flexibly is out of shape in the direction in the balancing gate pit.Manufacture method comprises the crooked thin-film member dome of the pressure moulding method shape by utilizing gas or liquid.
Description of drawings
Novel feature of the present invention becomes clearer by appended claims.With reference to corresponding accompanying drawing the preferred embodiment for the present invention is specifically described, will makes the more clear and easy understanding that becomes of purpose of the present invention and its method.Wherein:
Fig. 1 is the cross sectional view according to the valve gear of first embodiment of the invention that shows along the A-A line intercepting of Fig. 2;
Fig. 2 is the plan view that shows the valve gear among Fig. 1;
Fig. 3 is the cross sectional view that shows along the intercepting of the B-B line among Fig. 2;
Fig. 4 is the plan view that shows according to the valve gear of second embodiment of the invention;
Fig. 5 is the cross sectional view that shows according to the valve gear of third embodiment of the invention;
Fig. 6 is the cross sectional view that shows the passage stopper of the valve gear among Fig. 5;
Fig. 7 is the perspective view that shows the valve body among Fig. 5;
Fig. 8 is the cross sectional view that shows according to the valve gear of four embodiment of the invention;
Fig. 9 is the cross sectional view that shows the passage stopper of the valve gear among Fig. 8;
Figure 10 is the perspective view that shows the valve body among Fig. 8;
Figure 11 is the cross sectional view that shows according to the valve gear of fifth embodiment of the invention;
Figure 12 is the schematic perspective view that shows the printer arrangement according to the present invention;
Figure 13 is the block schematic that shows the printer arrangement shown in Figure 12;
Figure 14 is the cross sectional view that shows according to carrier in the sixth embodiment of the invention, with and the zoomed-in view of part;
Figure 15 is the plan view that shows the carrier among the Fig. 1 that does not have passage holding plate and film baffle;
Figure 16 shows that the nozzle of the record head among Figure 14 forms the plan view on surface;
Figure 17 is the cross sectional view that shows along the intercepting of the A-A line among Figure 15;
Figure 18 is the sketch that shows the carrier among Figure 14;
Figure 19 is the sketch that shows according to the carrier configuration in the seventh embodiment of the invention;
Figure 20 is the sketch that shows according to the carrier configuration in the eighth embodiment of the invention;
Figure 21 is the cross sectional view that shows according to the carrier major part in the ninth embodiment of the invention;
Figure 22 is the cross sectional view according to the valve gear in the tenth embodiment of the invention that shows along the A-A line intercepting of Figure 23;
Figure 23 is the plan view that shows the valve gear among Figure 22;
Figure 24 is the cross sectional view that shows along the intercepting of the B-B line among Figure 23;
Figure 25 (a) is the view of the manufacture method of the valve gear among explicit declaration Figure 22 to 25 (e);
Figure 26 is the plan view that shows according to the valve gear in the eleventh embodiment of the invention;
Figure 27 is the cross sectional view according to the valve gear of twelveth embodiment of the invention that shows along the A-A line intercepting of Figure 28;
Figure 28 is the plan view that shows the valve gear of Figure 27;
Figure 29 is the cross sectional view that shows along the B-B line intercepting of Figure 28;
Figure 30 is the cross sectional view that shows according to the valve gear of thirteenth embodiment of the invention;
Figure 31 is the cross sectional view that shows along the C-C line intercepting of Figure 30;
Figure 32 is the cross sectional view that shows according to the valve gear of fourteenth embodiment of the invention;
Figure 33 shows the plan view of watching from rear side according to the valve gear of fifteenth embodiment of the invention;
Figure 34 is the cross sectional view that shows along the D-D line intercepting of Figure 33;
Figure 35 is the cross sectional view that shows along the E-E line intercepting of Figure 33;
Figure 36 is the cross sectional view that shows according to the valve gear of sixteenth embodiment of the invention;
Figure 37 is the side sectional view that shows according to the carrier of seventeenth embodiment of the invention;
Figure 38 is the plan view of major part that shows the carrier of Figure 37;
Figure 39 is the side sectional view of major part that shows the carrier of Figure 37;
Figure 40 is the cross-sectional plan view that shows the pressure regulator of Figure 37; And
Figure 41 is the view of the ink channel of explicit declaration ink-jet printer according to the present invention.
The specific embodiment
Hereinafter, will be specifically described each embodiment of the present invention.In explanation, same label is represented same element, and its explanation will no longer repeat.
Arrive the valve gear 1 of Fig. 3 explanation with reference to Fig. 1 below according to first embodiment of the invention.As shown in Figure 1, valve gear 1 comprises liquid inlet 2, liquid outlet 3, balancing gate pit 4 and pressure regulator 5.Balancing gate pit 4 is connected to liquid inlet 2 and liquid outlet 3 and keeps liquid such as ink.Pressure regulator 5 is reduced to predeterminated level with the fluid pressure in the balancing gate pit 4.
Pressure regulator 5 has thin-film member 6.When the pressure in the balancing gate pit 4 becomes when being lower than predeterminated level (reaching predetermined negative pressure), thin-film member 6 plays the effect at the pressure bearing spare of the direction in balancing gate pit 4 (in direction downward shown in Fig. 1) strain.When pressure regulator 5 becomes when opening, liquid 2 enters into liquid outlet 3 from the liquid inlet.
As illustrated in fig. 1 and 2, valve gear comprises passage stopper 8.Pressure regulator 5 has valve body 9, pressure regulating spring 10, actuator lever 11 and thin-film member 6.The groove shape passage 7 that passage stopper 8 comprises liquid inlet 2, liquid outlet 3 and has rectangular shape.Groove shape passage 7 is connected to liquid inlet 2 and liquid outlet 3.Actuator lever 11 plays the effect of compressing member, and the propulsive force that is used to overcome pressure regulating spring 10 compresses valve body 9 to the enable possition.Therefore thin-film member 6 seal groove shape passages 7 also limit balancing gate pit 4.
If liquid is ink, then thin-film member 6 not be by can making from the material that scientific meaning influences ink character, and water, oxygen and nitrogen are shown relative low permeability.In other words, thin-film member 6 forms by the nylon membrane that for example bonding and lamination is coated with the polyvinyl chloride with density polyethylene film with high or polypropylene screen.Thin-film member 6 heat deposition are on the surface of passage stopper 8, so that the opening of seal groove shape passage 7.That is to say that thin-film member 6 forms the part of the outer wall of balancing gate pit 4.
Valve body 9 is removable between enable possition and closing position (position of Fig. 1).When being positioned at the enable possition, valve body 9 is connected to groove shape passage 7 with liquid inlet 2.When closing position, valve body 9 disconnection liquid inlets 2 are connected with groove shape passage 7.Valve body 9 is pushed closing position to by pressure regulating spring 10.
When the pressure in the balancing gate pit 4 becomes when being lower than predeterminated level, thin-film member 6 is in the direction strain in the balancing gate pit.Actuator lever 11 is born the thrust (elastic force) of the thin-film member 6 that remains on elastic deformation.In this state, actuator lever 11 will be delivered to valve body 9 greater than the power of aforementioned thrust, therefore, compress valve body 9 to the enable possition.
In valve gear 1, the part of the thin-film member 6 of the prolongation rectangle part of the thin-film member 6 of seal groove shape passage 7 or seal groove shape passage 7 is corresponding to pressure bearing part 6a.The actuator lever 11 of valve gear 1 is arranged in the groove shape passage 7 and comprises support end 11a and terminal 11c.As shown in Figure 1, support end 11a is corresponding to the left end of actuator lever 11, and terminal 11c is corresponding to the right-hand member of actuator lever 11 that is the opposite end of support end 11a.Actuator lever 11 forms the cantilever that support end 11a supports by passage stopper 8.Actuator lever 11 is born thrust from thin-film member 6 in the entire portion from support end 11a to terminal 11c.Valve body 9 is orientated as so that valve body 9 bears from the actuation force than the part of the actuator lever 11 of the more close support end 11a of the center of gravity of actuator lever 11.
As long as the rigidity of the support end 11a of actuator lever 11 enough is used to support actuator lever 11, support end 11a just satisfies the requirement of related rigid.Actuator lever 11 comprises support end 11a and is not the remainder as pressing section 11b of support end 11a.Because pressing section 11b contact also compresses valve body 9, so preferred pressing section 11b has high relatively rigidity.Therefore, the rigidity of the support end 11a of actuator lever 11 is set at than compressing the low level of part 11b.In the valve gear 1 of first embodiment, actuator lever 11 is formed by a thin plate.As shown in Figure 3, the pressing section 11b of actuator lever 11 has the cross sectional shape of passage shape.By bending pressing section 11b, the rigidity of pressing section 11b becomes than the rigidity height of support end 11a.
The valve body 9 of valve gear 1 comprises valve shaft 12, ring packing part 13 and as the clamping plate 14 of spring housing portion.Hermetic unit 13 is formed by O type spring.Passage stopper 8 comprises access road 15, liquid supply chamber 16, intercommunicating pore 17 and exit passageway 18.Access road 15 comprises liquid inlet 2.Liquid supply chamber 16 is connected to access road 15 and holds valve body 9 and pressure regulating spring 10.Intercommunicating pore 17 has round-shaped and liquid supply chamber 16 is connected to balancing gate pit 4.Exit passageway 18 is connected to balancing gate pit 4 and comprises liquid outlet 3.Intercommunicating pore 17 plays the effect of inlet, and exit passageway 18 plays the effect of outlet.
The opening of liquid supply chamber 16 is limited in the lower surface of passage stopper 8.Pressure regulating spring 10 is clipped between the keeper 19 of opening of the clamping plate 14 of valve body 9 and seal fluid supply chamber 16.Valve shaft 12 passes intercommunicating pore 17, so that the gap is limited between the circumferential surface of valve shaft 12 and intercommunicating pore 17.Owing to pass the valve shaft 12 of intercommunicating pore 17, so valve body 9 is pushed to closing position by pressure regulating spring 10.Passage stopper 8 has and is formed at relative valve body 9 or along the sealing surfaces 161 of the position of the external peripheral surface of intercommunicating pore 17.When valve body 9 was positioned at the enable possition, hermetic unit 13 was compacted by the sealing surfaces 161 in the liquid supply chamber 16.
In valve gear 1, if becoming, the pressure in minimizing of the liquid in the balancing gate pit 4 and the balancing gate pit 4 is lower than predeterminated level, then the pressure bearing part 6a of thin-film member 6 is in the direction strain in balancing gate pit 4.Therefore, the power that produces by thin-film member 6 at downward work shown in Figure 1 in order to compress actuator lever 11 or cantilever.Then, because leverage, therefore the actuation force that actuator lever 11 produces greater than the thrust of thin-film member 6, moves to the enable possition with the valve shaft 12 of valve body 9 from closing position.In other words, actuator lever 11 constitutes by bearing the leverage that thrust produces actuation force.That is to say that actuator lever 11 constitutes amplifies the force amplificatory structure of elastic force to actuation force.Therefore, pressure regulator 5 is transformed into opening, so that liquid 2 supplies to balancing gate pit 4 from the liquid inlet.When the pressure in increase of the liquid in the balancing gate pit 4 and the balancing gate pit 4 reached predeterminated level, the pressure bearing part 6a of thin-film member 6 returned to its original shape, recovers from the strain shape.As a result, valve body 9 turns back to closing position by the propulsive force of pressure regulating spring 10 from the enable possition.Therefore, pressure regulator 5 turns back to closure state, so that stop liquid 2 to supply to balancing gate pit 4 from the liquid inlet.
The valve gear 1 of first embodiment has the following advantages.
When the pressure in the balancing gate pit 4 becomes when being lower than predeterminated level, pressure regulator 5 is transformed into opening by the actuation force greater than the thrust of the pressure bearing part 6a of thin-film member 6.If the pressure in the balancing gate pit 4 reaches predeterminated level, then pressure regulator 5 turns back to closing position, so that the pressure in the balancing gate pit 4 is reduced to predeterminated level.More particularly, actuator lever 11 produces the actuation force of the thrust that applies greater than the pressure bearing part 6a by thin-film member 6.By actuation force, actuator lever 11 overcomes " seal load " effect that is used for opening pressure adjuster 5." seal load " is defined as by relative sealing surfaces (abutment surface) 161 and compresses hermetic unit 13 with the power of adjuster 5 at closure state that keep-ups pressure.Seal load produces by pressure regulating spring 10.In other words, pressure regulator 5 obtains the actuation force greater than the thrust of the strain generation of passing through thin-film member 6.Pressure regulator 5 constitutes by this actuation force and opens.This structure decrease the surface area of pressure bearing part 6a of thin-film member 6, therefore can minimum pressure adjuster 5 and valve gear 1.
Pressure bearing part 6a forms by the prolongation rectangle part of the thin-film member 6 of seal groove shape passage 7.Therefore, when a plurality of groove shape passages 7 be arranged in parallel so that when a plurality of pressure regulator 5 is set, loss in surface area (invalid surface area) becomes relatively little.Therefore, can dispose pressure regulator 5 in highly integrated mode.
Element except the valve gear 1 of valve body 9 and pressure regulating spring 10 comprises thin-film member 6 and actuator lever 11, forms thin plate.This structure can reduce the thickness of pressure regulator 5 and the thickness of valve gear 1 generally.
Valve body 9 orientate as in case valve body 9 at the actuation force that bears than the position of the more close support end 11a of the center of gravity of actuator lever 11 from actuator lever 11.Therefore, the power that the amplification of the power that the pressure bearing part 6a of actuator lever 11 by thin-film member 6 bears produces, or in other words, the power greater than the thrust of pressure bearing part 6a makes valve body 9 move to the enable possition.The center of gravity of actuator lever 11 is corresponding to the power point, and support end 11a is corresponding to fulcrum, and pressing section 11b is corresponding to application point.This construction minimizes be the surface area of pressure bearing part 6a of the prolongation rectangle part of thin-film member 6.Therefore can reduce pressure regulator 5 generally and adopt pressure regulator 5 in height integrated level mode.
Enough be used to support actuator lever 11 as long as play the rigidity of support end 11a of the strong point (fulcrum) effect of actuator lever 11, support end 11a just satisfies the requirement of related rigid.Relatively, because the pressing section 11b of actuator lever 11 compresses the valve shaft 12 of valve body 9, so preferred pressing section 11b has high relatively rigidity.Therefore, the rigidity of the support end 11a of actuator lever 11 is lower than the rigidity of pressing section 11b.The moment that this has just reduced by the support end 11a generation of actuator lever 11 has suppressed the side effect of moment.
Because actuator lever 11 forms by single thin plate is whole, therefore, has simplified the location and the processing of actuator lever 11.Because the pressing section 11b of actuator lever 11 bending is that therefore, pressing section 11b has the rigidity that is higher than the support end 11a (support section) with flat shape so that pressing section 11b has the cross sectional shape of passage shape.
When valve shaft 12 passed the intercommunicating pore 17 with the gap between the circumferential surface that is limited to valve shaft 12 and intercommunicating pore 17, valve body 9 was pushed opening section to by pressure regulating spring 10.In this state, hermetic unit 13 compresses the sealing surfaces 161 of liquid supply chamber 16.Therefore, do not need to provide the shaft supporting structure of the high components accuracy of needs.Therefore, make things convenient for the assembling of pressure regulator 5, and reduced the cost that is used for pressure regulator 5.
Below with reference to the valve gear 1A of Fig. 4 explanation according to second embodiment of the invention.Valve gear 1A has 6 pressure regulators 5 1To 5 6 Valve gear 1A can use dissimilar liquid, as the ink of 6 kinds of colors.Valve gear 1A comprises 6 groove shape passages 7 that be arranged in parallel 1To 7 6, each all keeps corresponding ink color.Thin-film member 6A heat deposition is on the channel surface of stopper 8, so that seal groove shape passage 7 1To 7 6Opening.This also defines 6 balancing gate pits 4 1To 4 6Thin-film member 6A forms balancing gate pit 4 1To 4 6Part.Each seal groove shape passage 7 all wherein 1To 7 6Rectangle part or the seal groove shape passage 7 of corresponding one thin-film member 6A 1To 7 6The part of thin-film member 6A of opening, be pressure bearing part 6a 1To 6a 6
At each groove shape passage 7 1To 7 6In, be provided with a corresponding actuator lever 11 1To 11 6Each actuator lever 11 1To 11 6All form by cantilever, in cantilever, support end 11a 1To 11a 6Support by passage stopper 8A.
Outside the advantage of first embodiment, second embodiment also has the following advantages.
Valve gear 1A comprises 6 groove shape passages 7 that be arranged in parallel 1To 7 6And 6 pressure regulators 5 1To 5 6This construction minimizes has also reduced the thickness of the valve gear 1A that is used for liquid injection device such as ink-jet printer.
Below with reference to the valve gear 1B of Fig. 5 to 7 explanation according to third embodiment of the invention.
In valve gear 1B, the valve body 9B of pressure regulator 5B is basic L type (V-type) bar.Valve body 9B is arranged in the groove shape passage 7 and the relative wall by passage stopper 8B pivotally supports.Valve body 9B has the second bar part 21 that the first bar part 20 that comprises hermetic unit 13 and the pressing section 11b by actuator lever 11 compress.The first bar part 20 and the second bar part, 21 whole formation.Hermetic unit 13 is fixed to the front (in Fig. 5, being the left side) of the first bar part 20.
For the valve body 9B of basic L type bar comprises the pin 22,22 (referring to Fig. 7) that protrudes from the opposite side of the intersection between the first bar part 20 and the second bar part 21.Gathering sill with basic L type is limited to the inner surface (referring to Fig. 6) of each opposing sidewalls of passage stopper 8B. A corresponding pin 22,22 inserts each gathering sill 23 to position shown in Figure 5.Each gathering sill 23 all rollably supports corresponding pin 22.
Access road 15 is limited in the sidewall of passage stopper 8B (left side wall).Access road 15 comprises liquid inlet 2 and is connected to balancing gate pit 4.L type (V-type) leaf spring 10 as pressure regulating spring advances valve body 9B in the balancing gate pit 4 by being arranged on.The sealing surfaces 4a of hermetic unit compaction pressure chambers 13 (the excircle part of access road 15).Other structures of valve gear 1B are identical with the structure of the valve gear 1 of first embodiment.In Fig. 6, show the step 8a1 of passage stopper 8.The support end 11a of actuator lever 11 is fixed to step 8a1 by adhesive etc.
In valve gear 1B, when the pressure in the balancing gate pit 4 becomes when being lower than predeterminated level (reaching predetermined negative pressure), the pressure bearing part (being presented at the pressure bearing part 6a of first embodiment among Fig. 2) of thin-film member 6 is in the direction strain in balancing gate pit 4, therefore, compress actuator lever 11 or cantilever in the downward direction of Fig. 5.Therefore, actuator lever 11 is passed through the actuation force greater than the thrust of the pressure bearing part 6a of thin-film member 6, compresses the second bar part 21 of the valve body 9B that remains on closure state (state of Fig. 5) in downward direction.In this mode, valve body 9B rotates (at the clockwise direction of Fig. 5) around pin 22 to the enable possition pivot.Therefore, hermetic unit 13 separates with the sealing surfaces 4a of balancing gate pit 4, so that pressure regulator 5B is transformed into opening.In this state, liquid 2 supplies to balancing gate pit 4 by access road 15 from the liquid inlet.
When the pressure in increase of the amount of liquid in the balancing gate pit 4 and the balancing gate pit 4 reached predeterminated level, the pressure bearing part 6a of thin-film member 6 returned to original shape, from the strain recovery of shape.Therefore, the propulsive force of leaf spring 10B makes valve body 9B pivot to closing position (counterclockwise) from the enable possition around pin 22.Sealing surfaces 4a with regard to relative pressure chamber 4 has compressed hermetic unit 13 like this, so that pressure regulator 5B returns to closure state.Therefore, closing liquid 2 supplies to balancing gate pit 4 from the liquid inlet.
Except the advantage of first embodiment, the 3rd embodiment also has the following advantages.
The valve body 9B of pressure regulator 5B is basic L type bar, and is positioned at closing position when advancing by leaf spring 10B.Therefore, the sealing surfaces 4a of hermetic unit compaction pressure chambers 4 13.Therefore, in valve body 9B, do not need to provide need high relatively components accuracy shaft supporting structure.So just make things convenient for the assembling of pressure regulator 5B, therefore saved cost.
Leaf spring 10B is contained in the balancing gate pit 4 of passage stopper 8B.Because the access road 15 that passage stopper 8B must comprise unique balancing gate pit 4 and be connected to liquid inlet 2, therefore, the structure of passage stopper 8B is quite simple.In addition, do not need to be provided for keeping the keeper of leaf spring 10B.This has also made things convenient for the assembling of pressure regulator 5B and has saved cost.
Below with reference to the valve gear 1C of Fig. 8 to 10 explanation according to four embodiment of the invention.
In valve gear 1C, the valve body 9C of pressure regulator 5C is by being arranged on basic L type bar in the groove shape passage 7 and forming and relative wall by passage stopper 8C pivotally supporting.Valve body 9C has the second bar part 31 that the first bar part 30 that comprises hermetic unit 13 and the pressing section 11b by actuator lever 11 compress.The first bar part 30 and the second bar part, 31 whole formation.Hermetic unit 13 is fixed to front (in Fig. 8, being the lower surface of the first bar part 30).
Valve body 9C comprises the pin 32,32 (referring to Figure 10) that protrudes from the opposite side of the intersection between the first bar part 30 and the second bar part 31.The gathering sill 33 of basic L type is limited to the inner surface (referring to Fig. 9) of each opposing sidewalls of passage stopper 8C. A corresponding pin 32,32 inserts each gathering sill 33 to position shown in Figure 8.Each gathering sill 33 all rollably supports corresponding pin 22 in the insertion position.
The access road 15C and the exit passageway 18 that comprise liquid inlet 2 and be connected to balancing gate pit 4 are limited in the bottom of passage stopper 8C.Extension spring 10C as pressure regulating spring is arranged in the balancing gate pit 4.The left end of extension spring 10C is fixed to the respective side walls of passage stopper 8C, and the right-hand member of extension spring 10C is fixed to the second bar part 31.The valve body 9C of basic L type bar pushes closing position at the sealing surfaces 4b of this hermetic unit compaction pressure chambers 4 13 to by extension spring 10C.All the other structures of valve gear 1C are identical with the structure of the valve gear 1 of first embodiment.
In valve gear 1C, when the pressure in the balancing gate pit 4 becomes when being lower than predeterminated level, in the direction strain in balancing gate pit 4, therefore, the downward direction in Fig. 8 compresses actuator lever 11 to the pressure bearing part (being presented at the pressure bearing part 6a of first embodiment among Fig. 2) of thin-film member 6.Therefore, actuator lever 11 is passed through the actuation force greater than the thrust of the pressure bearing part 6a of thin-film member 6, compresses the second bar part 31 of the valve body 9C that remains on closing position in downward direction.In this mode, valve body 9C pivotally rotates (at the clockwise direction of Fig. 8) around pin 32,32 to the enable possition.Therefore, hermetic unit 13 separates with the sealing surfaces 4b of balancing gate pit 4, so that pressure regulator 5C is transformed into opening.In this state, liquid 2 supplies to balancing gate pit 4 by access road 15C from the liquid inlet.
When the pressure in increase of the amount of liquid in the balancing gate pit 4 and the balancing gate pit 4 reached predeterminated level, the pressure bearing part 6a of thin-film member 6 returned to original shape, from the strain recovery of shape.Therefore, the propulsive force of extension spring 10C makes valve body 9C pivot to closing position (counterclockwise) from the enable possition around pin 32.Sealing surfaces 4a with regard to relative pressure chamber 4 has compressed hermetic unit 13 like this, so that pressure regulator 5C returns to closure state.Therefore, closing liquid 2 supplies to balancing gate pit 4 from the liquid inlet.
Except the advantage of first embodiment, the 4th embodiment also has the following advantages.
Identical with the reason of the explanation that the 3rd embodiment is described, the same convenient cost of also further having saved of the assembling of valve gear 1C.
Below with reference to the valve gear 1D of Figure 11 explanation according to fifth embodiment of the invention.
Valve gear 1D is characterised in that the pressure regulator 5 of first embodiment shown in Figure 1 plays the effect of butterfly gate.As mentioned herein " effect of butterfly gate " be defined as and force the adjuster 5 that keep-ups pressure, or the connection between forced closing liquid supply chamber 16 and the balancing gate pit 4 in the closing position of Figure 11.
In valve gear 1D, the keeper 40 with intercommunicating pore 41 is fixed to the lower surface of passage stopper 8, replaces the keeper 19 in first embodiment.Intercommunicating pore 41 be positioned at valve body 9 valve shaft 12 below.The moving pin 42 that is used for selectively promoting or reduces valve shaft 12 is contained in intercommunicating pore 41, so that allow pin 42 to move up or down.The sealing film spare 43 of the lower surface of the lower part of moving pin 42 by being fixed to keeper 40 covers, and is used to seal the opening of intercommunicating pore 41.This structure has prevented that moving pin 42 from falling outside (in downward direction) from intercommunicating pore 41.
Pin actuator 50 is arranged on below the pressure regulator 5 of valve gear 1D, is used for mobile moving pin 42 between closed position and unblock position (area below the closed position).Moving pin 42 is elevated to closed position and is used to force the closing position that keeps valve body 9 shown in Figure 11.Corresponding with the unblock position, valve body 9 discharges from the closing position of forcing maintenance.
Pin actuator 50 comprises cylinder 51, is contained in piezoelectric element 52 and actuator pin 53 among the centre bore 51a of cylinder 51.For example, when providing AC voltage, piezoelectric element 52 selectively extends or compresses, so that actuator pin 53 correspondingly moves up or down.Actuator pin 53 is being used for mobile moving pin 42 to the primary importance of closed position be lower than between the second place (position of Figure 11) of primary importance and move.When actuator pin 53 when primary importance moves to the second place because the gravity effect of moving pin 42, moving pin 42 drops to the unblock position from closed position.
If stop the supply (powered-down supply) of AC voltage, simultaneously actuator pin 53 remains on primary importance (moving pin 42 remains on closed position), and then the frictional force between the circumferential surface of the centre bore 51a of actuator pin 53 by acting on actuator pin 53 and cylinder 51 remains on primary importance.In this mode, moving pin 42 remains on closed position.
In valve gear 1D, when AC voltage supplies to piezoelectric element 52, when actuator pin 53 remained on the second place of Figure 11 simultaneously, piezoelectric element 52 extended, so that actuator pin 53 moves to primary importance.So just moving pin 42 is moved to closed position, therefore make moving pin 42 be compelled to keep the closing position of valve body 9 at Figure 11 from the unblock position.
When moving pin 42 remains on closed position when cutting off the electricity supply simultaneously, actuator pin 53 remains on primary importance by the frictional force between the circumferential surface of actuator pin 53 and cylinder 51.Therefore moving pin 42 remains on closed position.
Supply to piezoelectric element 52 if recover AC voltage again, simultaneously moving pin 42 remains on closed position, and then piezoelectric element 52 is compressed, so that actuator pin 53 moves to the second place from primary importance.Therefore, because the gravity effect of moving pin 42, moving pin 42 drops to the unblock position from closed position.Valve body 9 is released from the closing position that is compelled to keep.
The 5th embodiment has the following advantages.
Because pressure regulator 5 plays the effect of butterfly gate.Therefore, do not need to provide the butterfly gate that separates with pressure regulator 5, for example,, just can provide the ink-jet printer of butterfly gate effect with relatively small amount element and relatively low cost if valve gear 1D is configured in the carrier of ink-jet printer.
The valve gear 1D of the 5th embodiment can be applied in second embodiment of Fig. 2, so that 6 pressure regulators 5 1To 5 6Each all plays the effect of butterfly gate.In the case, one or more pressure regulator 5 1To 5 6Can be compelled to remain on closing position, be used to carry out selectivity and clean.According to " selecting to clean ", for example, the one or more cleaning of selecting in the ink of 6 kinds of colors.More particularly, corresponding to the pressure regulator 5 of the color of selecting 1To 5 6Moving pin 42 move to closed position.In this mode, corresponding pressure regulator 5 1To 5 6Be compelled to remain on closing position.
Above-mentioned butterfly gate mechanism is used for mobile moving pin 42 between closed position and unblock position for wherein selling the latch structure that actuator 50 drives actuator pins 53.Therefore, make pressure regulator 5 play the structure of butterfly gate effect, can be arranged in the relatively little space below the relatively little equally pressure regulator 5.
Supply to piezoelectric element 52 if stop AC voltage, moving pin 42 is positioned at closed position simultaneously, and then actuator pin 53 remains on primary importance by the frictional force between the circumferential surface of actuator pin 53 and cylinder 51.Therefore, moving pin 42 remains on closed position.Therefore, if valve gear 1D is installed in the carrier of ink-jet printer,, also can prevent because the position of printer or ink that environment the causes head by carrier leaks even then close the power supply of printer.
[printer]
Illustrate that with reference to Figure 12 and 13 valve gear 1 of the embodiment of using explanation arrives the embodiment of the printer of 1D below.More particularly, will illustrate that the valve gear 1 of first embodiment is arranged on the inkjet type printer in the carrier by embodiment.
As shown in figure 12, printer 100 or liquid injection device comprise the basic framework 102 of parallelepiped that is.Paper feed shelter 103 is arranged on the upper surface of framework 102.Paper discharge dish 104 is arranged on the front surface of framework 102.Each of paper feed shelter 103 and paper discharge dish 104 all is fixed to framework 102 by unaccounted linkage, is contained in the framework 102 with folded state so that coil 103,104.
Impression dish 105 is formed in the framework 102, and extends along vertically (Y to) of framework 102.Record-paper injects framework 102 and supplies to impression dish 105 along X to (perpendicular to Y-axis) by unaccounted paper advance mechanism by paper feed shelter 103.Then, record-paper is discharged framework 102 by paper discharge dish 104.
Guide 106 is formed in the framework 102 and is parallel to impression dish 105 and extends.Carrier 60 supports movably by guide 106.Valve gear 1 is installed in the carrier 60.Carrier motor (not shown) is fixed in the framework 102.Carrier 60 is operably connected to the carrier motor by the timing belt (not shown) of a pair of belt wheel (not shown) of reeling.Therefore, when driving the carrier motor, the driving force of carrier motor is delivered to carrier 60 by timing belt.Therefore, carrier 60 moves back and forth by the direction (main scanning direction Y) that being directed at of guide 106 is parallel to impression dish 105.
Be formed at the lower surface (surface of impression dish 105 relatively) of carrier 60 as the record head 108 of jet head liquid.Record head 108 comprises that the nozzle of record-oriented paper forms surperficial 108a (referring to Figure 13).Form among the surperficial 108a at nozzle, arranged 6 nozzle row N that each nozzle NZ (referring to Figure 13) is provided with quantity n (n=natural number) 1To N 6(referring to Figure 16).In this embodiment, for purposes of illustration, nozzle row N 1To N 6Quantity be set at 6, and the quantity that is arranged on the nozzle NZ in each nozzle row is set at n.Yet, the quantity of the nozzle NZ of each nozzle row and nozzle row N 1To N 6Quantity be not defined as the quantity of embodiment, but can change as required.
Each all is arranged in the framework 102 as the first ink carrier 109 and the second ink carrier 110 of liquid retaining part.As what will be explained below, each of the first and second ink carriers 109,110 all will be provided to record head 108 for liquid and corresponding to the color inks (black, cyan, magenta, yellow, light cyan or shallow magenta) of each nozzle NZ.The ink that supplies to record head 108 by piezoelectric element 108b (referring to Figure 13) supercharging and from the respective nozzle NZ of record head 108 as ink droplet jet, therefore form ink dot.In other words, each the nozzle NZ that is formed at record head 108 sprays the ink for the respective color of black, cyan, magenta, yellow, light cyan or shallow magenta.
Printer 100 comprises by moving back and forth that carrier 60 is used to print and with the print area of ejection of ink drops to the record-paper.Printer 100 also has the nonprinting region that is used for sealed-in nozzles NZ when not printing.As shown in figure 12, lid fixator 111 is formed in the nonprinting region.
Lid fixator 111 is provided with flexible cover piece 112, so that the nozzle of cover piece 112 relative record heads 108 forms surperficial 108a.Lid fixator 111 is placed cover piece 112 by unaccounted driving mechanism and is formed surperficial 108a with the nozzle of tight contact history head 108 and come sealed-in nozzles NZ.With reference to Figure 13, intercommunicating pore 112a, 112b are limited in the bottom of cover piece 112, and are connected with the inside of cover piece 112.Cover gab valve 113 is connected to intercommunicating pore 112a by the pipe T1 of lid fixator 111 outsides.When needs, cover gab valve 113 is opened by cover piece 112 and nozzle and is formed the space that the tight contact between the surperficial 108a limits.The suction inlet (not shown) of gear pump GP is connected to intercommunicating pore 112b by pipe T2.Gear pump GP comprises gear G1, G2.When the driving force of unaccounted drive motor was delivered to gear pump GP, gear G1, G2 rotation was so that arrive cover piece 112 with negative pressure feeding.That is to say to have the gear pump GP that sealed-in nozzles forms the cover piece 112 of surperficial 108a by driving, negative pressure can supply to nozzle NZ that nozzle forms surperficial 108a and be used for washer jet and form surperficial 108a.
Adjusting device 114 is connected to the outlet (not shown) of gear pump GP by pipe T3.The first ink carrier 109 is connected to adjusting device 114 by pipe T4.
The first ink carrier 109 comprises and is used to the ink absorber 115 that keeps the ink bag B of black ink and be used to absorb ink.Ink bag B is connected to the record head 108 of carrier 60 by pipe T5.Ink absorber 115 absorbs porous material by for example water such as sponge forms.
Therefore, enter the first ink carrier 109 by gear pump GP from useless ink and the air that cover piece 112 sucks.Then, useless ink sucks by the absorber in the first ink carrier 109 115.The amount and the flow of useless ink and the air of delivering to the first ink carrier 109 are regulated by adjusting device 114.
The second ink carrier 110 is connected to the first ink carrier 109 by pipe T6.The first and second ink carriers 109,110 are connected to each other by T6.The second ink carrier 110 comprises ink bag C, M, YL, LC and the LM that is respectively applied for maintenance cyan, magenta, yellow, light cyan and shallow magenta ink.Ink bag C, M, YL, LC and LM are connected to the record head 108 of carrier 60 respectively by pipe T7, T8, T9, T10 and T11.When needs, shedding motion 116 is connected to the second ink carrier 110 by pipe T12 and is used to open the second ink carrier 110.
Therefore, when driving gear pump GP, useless ink and air flow to ink carrier 109 from cover piece 112 suctions and by pipe T2, gear pump GP, pipe T3, adjusting device 114 and pipe T4 from cover piece 112.Because useless ink sucks by the ink absorber in the first ink carrier 109 115, so, have only air (being called " pressurized air " hereinafter) in the first ink carrier 109, to flow.Pressurized air flow to the second ink carrier 110 from the first ink carrier 109 by pipe T6, remains on then in the opening device 116 that is connected to pipe T12.
In other words, the air pressure in the air pressure in the first ink carrier 109 and the second ink carrier 110 is constant each other equates there is not difference.Therefore, if driving gear pump GP, then because the air of supercharging would increase the air pressure in each of the first and second ink carriers 109,110.Therefore ink bag B, C, M, YL, LC and LM are pressurized.Remain on ink among each ink bag B, C, M, YL, LC and the LM and deliver to the record head 108 of carrier 60 in compacted mode.
That is to say that in the printer 100 of this embodiment, gear pump GP comprises and being used for negative pressure feeding to the scavenging pump of cover piece 112 and the booster pump that is used for supercharging ink bag B, C, M, YL, LC and LM.Therefore, the gear pump GP under the driving condition to cover piece 112, is used for negative pressure feeding to suck useless ink and air and supercharging ink bag B, C, M, YL, LC and LM from cover piece 112 and is used for ink is delivered to record head 108.
Ink-jet printer has the following advantages.
Can minimize and reduce the thickness of inkjet type printer.
The present invention is not limited to the embodiment of explanation, but can be included in change and the improved form of realizing in the purpose scope of the present invention.Therefore, for example, the present invention can implement with following improved form.
In first embodiment of Fig. 1, have the material of the relative hypotonicity of water, oxygen or nitrogen is represented embodiment as the material of the thin-film member 6 of pressure bearing spare.Yet the material of thin-film member 6 is not defined as the material of expression, but can be single thin film or rubber film.If use these films, the element that the husband adds can be arranged in the thin-film member 6, is used for satisfying the requirement to the relative hypotonicity of water, oxygen or nitrogen.
In first embodiment of Fig. 1, the intercommunicating pore 17 that liquid supply chamber 16 is connected to balancing gate pit 4 forms circle.The valve shaft 12 of valve body 9 passes intercommunicating pore 17, so that the gap is limited between the circumferential surface of valve shaft 12 and intercommunicating pore 17.Yet the present invention is not limited to this, but can constitute so that intercommunicating pore 17 has the Any shape that is not circular.
In first embodiment of Fig. 3, actuator lever 11 bendings are for having the cross sectional shape of passage shape.Yet in addition, the support end 11a of actuator lever 11 and pressing section 11b can be formed by the different materials with different rigidity grade.Support end 11a is fixed to pressing section 11b by adhesive or by deposition.In this mode, guaranteed the poor rigidity between support end 11a and the pressing section 11b.
In second embodiment of Fig. 4, the valve gear 1A that uses 6 kinds of ink colors is illustrated as embodiment.Yet the present invention can be applied to the valve gear of the color inks that utilizes varying number, rather than 6.For example, if valve gear uses the ink of 4 kinds of colors, 4 groove shape passages 7 then be arranged in parallel 1To 7 4, and 4 pressure regulators 5 are set 1To 5 4
In the 3rd embodiment of Fig. 5, be arranged on the leaf spring 10B propelling of the pressure regulating spring in the balancing gate pit 4 by conduct for the valve body 9B of basic L type bar.Therefore, the sealing surfaces 4a of valve body 9B relative pressure chamber 4 compresses seal 13.Yet, can not adopt leaf spring 10B, valve body 9B can advance by torsion-coil spring in the same way.
The valve gear of the embodiment of above-mentioned explanation can be applied to the different liquids spraying equipment that is not the inkjet type printer, for example, inkjet-type recording device of ink-jet (comprising the printing equipment as facsimile machine and duplicator) or injection are not the liquid injection devices of the multi-form liquid of ink.For example, the present invention can be applied to or is used to make the jetelectrode material of LCD, EL display and surface emitting display or the liquid injection device of color material, or sprays the liquid injection device of the biological organic substance that is used to make biochip or as accurate suction pipe sampling spraying equipment.
According to Figure 12 and 13, illustrated that valve gear 1 with first embodiment is installed in the inkjet type printer (printer of carrier mo(u)ld top half) in the sliding part 60.Yet the present invention can be applied to valve gear 1 and is not arranged in the carrier 60, but the inkjet type printer during liquid being supplied to the liquid supply row of jet head liquid (record head 108) from liquid retaining part (carrier 109,110).
The present invention also can be installed in inkjet type printer in the carrier 60 to 1D with any valve gear 1A of being administered to second to the 5th embodiment wherein, or this valve gear is arranged on from the liquid retaining part and supplies to jet head liquid, rather than the liquid of carrier 60 is supplied with the inkjet type printer in the row.
The liquid of each valve gear of the embodiment that is used for illustrating is not limited to ink, but can not be the multi-form liquid of ink.
Below with reference to the carrier 60 of Figure 14 to 18 explanation according to sixth embodiment of the invention.Figure 14 has shown the carrier 60 of the 6th embodiment, and it is attended by the zoomed-in view of the part that shows carrier 60.Figure 18 has shown the sketch of carrier 60 structures of Figure 14.
Carrier 60 is used for as the inkjet type printer that uses 6 kinds of color inks as the liquid injection device of multi-form liquid.6 kinds of colors are corresponding to black, cyan, magenta, yellow, light cyan and shallow magenta.
As shown in figure 14, carrier 60 has passage stopper 8 and spring receiving member 70.Valve gear 1 is installed in the part of carrier 60.Carrier 60 comprises the record head 108 as jet head liquid.Record head 108 is fixed to the right end portion of the lower surface of passage stopper 8 by channel plate 72.Passage holding plate 73 and film baffle 74 are arranged on the upper surface of passage stopper 8.
Shown in Figure 14 and 15, valve gear 1 comprises and is connected respectively to 6 liquid inlets 2 1To 2 6And 6 liquid outlets 3 1To 3 66 balancing gate pits 4 that are used to keep 6 kinds of color inks 1To 4 6, and 6 pressure regulators 5 1To 5 6
Each pressure regulator 5 1To 5 6All comprise corresponding 6 the rectangular channel shape passages 7 that are limited in the passage stopper 8 1To 7 6One of, valve body 9, pressure regulating spring 10, be used for valve body 9 is overcome the actuator lever 11 that the propulsive force that compresses regulating spring 10 is pressed to the enable possition accordingly 1To 11 6One of and seal groove shape passage 7 1To 7 6And qualification balancing gate pit 4 1To 4 6Thin-film member 6.For example, pressure regulator 5 1Comprise rectangular channel shape passage 7 1, valve body 9, pressure regulating spring 10, actuator lever 11 1, and seal groove shape passage 7 1And qualification balancing gate pit 4 1Thin-film member 6.Pressure regulator 52 comprises rectangular channel shape passage 7 2, valve body 9, compress regulating spring 10, actuator lever 11 2, and seal groove shape passage 7 2And qualification balancing gate pit 4 2Thin-film member 6.Pressure regulator 5 3To 5 6With with pressure regulator 5 1With 5 2Same mode constitutes.In Figure 14, in 6 valve bodies 9, only shown to be used for pressure regulator 5 1Valve body 9.
Thin-film member 6 heat deposition are used for seal groove shape passage 7 on the surface of passage stopper 8 1Opening so that limit 6 balancing gate pits 4 1To 4 6Thin-film member 6 forms balancing gate pit 4 1To 4 6The part of outer wall.Seal groove shape passage 7 1To 7 6The rectangle part or the seal groove shape passage 7 of thin-film member 6 1To 7 6The part of thin-film member 6 of opening corresponding to pressure bearing part 6a 1To 6a 6(referring to Figure 15).
Each pressure regulator 5 1To 5 6All bear part 6a by relevant pressure greater than thin-film member 6 1To 6a 6The actuation force of the thrust that produces of strain to balancing gate pit 4 1To 4 6Interior direction moves to the enable possition.
The ink of 6 kinds of colors all supplies to liquid inlet 2 by pipe T5, the T7 that each all forms the partially liq supply pipeline to T11 as the ink carrier 109,110 of liquid retaining part from each 1To 2 6From liquid outlet 3 1To 3 6The ink of discharging supplies to record head 108 by the passage that is limited in the channel plate 72.
Nozzle forms the lower end that surperficial 108a (referring to Figure 16) is formed at record head 108.Form among the surperficial 108a at nozzle, arranged 6 nozzle row N that each nozzle all is provided with quantity n (n=natural number) 1To N 6Passed through the passage of channel plate 72 from liquid outlet 3 1To 3 6The color inks of delivering to record head 108 is from corresponding to nozzle row N 1To N 6One of nozzle NZ discharge as ink droplet.
As what illustrated, keep 6 groove shape passages 7 of 6 kinds of color ink 1To 7 6Be arranged in parallel and 6 pressure regulators 5 1To 5 6Be arranged in the carrier 60.
Each pressure regulator 5 1To 5 6Valve body 9 all between enable possition and closing position (position of Figure 14), move.When each valve body 9 all is positioned at the enable possition, corresponding liquid inlet 2 1To 2 6Be connected to relevant groove shape passage 7 1To 7 6Corresponding with closing position, liquid inlet 2 1To 2 6Disconnect and groove shape passage 7 1To 7 6Connection.Valve body 9 is pushed to closing position by pressure regulating spring 10.
At each pressure regulator 5 1To 5 6In, when balancing gate pit 4 1To 4 6In pressure become when being lower than predeterminated level the pressure bearing part 6a of thin-film member 6 1To 6a 6To balancing gate pit 4 1To 4 6Interior direction strain.Actuator lever 11 1To 11 6By greater than by pressure bearing part 6a 1To 6a 6The actuation force of the thrust that produces of strain advancing valve body 9 to the enable possition direction.
With reference to Figure 14,6 valve body pockets 160 are limited in the lower surface of passage stopper 8.Each valve body pockets 160 all one of corresponding is connected to 6 rectangular channel shape passages 7 by what be limited to 6 intercommunicating pores 17 in the passage stopper 8 1To 7 6One of corresponding, or related pressure adjuster 5 1To 5 6 Balancing gate pit 4 1To 4 6One of corresponding.6 valve body pockets 70a are limited in the upper surface of spring receiving member 70.The lower surface of the upper surface of spring receiving member 70 and passage stopper 8 is bonding, so that 6 valve body pockets 160 of passage stopper 8 corresponding to 6 valve body pockets 70a of relevant spring receiving member 70, therefore limit 6 liquid supply chambers 16.Each liquid supply chamber 16 all bears relevant pressure adjuster 5 1To 5 6 Valve shaft 12, hermetic unit 13 and pressure regulating spring 10.
Each pressure regulator 5 1To 5 6 Pressure regulating spring 10 all be clipped between the interior part (bottom) of the clamping plate 14 of valve body 9 and corresponding valve body pockets 70a.In this mode, valve body 9 advances to closing position by pressure regulating spring 10, and in this closing position, hermetic unit 13 compresses the sealing surfaces 161 of valve body pockets 160, simultaneously, valve shaft 12 passes the intercommunicating pore 17 with the gap between the wall that is limited to valve shaft 12 and intercommunicating pore 17.
In addition, the liquid inlet 2 1To 2 6Be limited to the left end (right-hand member of the passage stopper 8 of relative fixed record head 108) of passage stopper 8 with 6 passages 81 to 86.Each passage 81 to 86 all will supply to respective liquid inlet 2 1To 2 6Color inks be incorporated into one of corresponding 6 liquid supply chambers 16 respectively.
With reference to Figure 14 and 15, passage 81 comprises from the liquid inlet the 21 horizontally extending 81a of first, the second portion 81b that extends vertically upward from the end of the 81a of first, the 4th part 81d that extends vertically downward from the horizontally extending third part 81c of opening (upper end) of second portion 81b, from the right-hand member of third part 81c and horizontally extending the 5th part 81e from the lower end of the 4th part 81d.The 5th part 81e is connected to the one of corresponding of 6 valve body pockets 70a by the groove 79 that is limited to the groove 77 in the passage stopper 8 and be limited to spring receiving member 70 and be connected to groove 77.Therefore, supply to liquid inlet 2 1Ink with this part 81a that flows through passage 81 in proper order to 81e, and enter into corresponding valve body pockets 70a by the groove 77 of passage stopper 8 and the groove 79 of spring receiving member 70.Passage 81 and groove 77,79 form access road.
The same with passage 81, each of passage 82 to 86 all comprise the 82a of first to 86a, second portion 82b to 86b, third part 82c to 86c, the 4th part 82d to 86d and the 5th part 82e to 86e (referring to Figure 15).The 5th part 82e of each passage 81 to 86 to 86e all by equally being limited to the groove in the passage stopper 8 with groove 77 and being limited in the spring receiving member 70 and the groove (the same with groove 79) that is connected to aforementioned grooves is connected with corresponding valve body pockets 70a.
In Figure 14, the 81a of first of passage 81 only has been described, and has omitted the first of passage 82 to 86.
Channel plate 72 shown in Figure 14 comprises and being used for from corresponding 6 liquid outlets 3 1To 3 6The guiding color inks is to the respective nozzle row N of record head 108 1To N 66 independent row (not shown).
As shown in figure 14, spring receiving member 70 comprises with axis of guide effect (guide 106 of corresponding Figure 16) and is used to guide carrier 60 so that the bearing portions 70b that carrier 60 moves back and forth.
The film baffle 74 pinch off channel stoppers 8 of excircle part by forming rectangular frame of the thin-film member 6 of Figure 15.Film baffle 74 is fixed to the upper surface of carrier 60.
The passage holding plate 73 of opening that is used to seal the passage 81 to 86 of Figure 15 is fixed to the upper surface portion (referring to Figure 14) of the carrier 60 that limits 6 passages 81 to 86.
As shown in figure 18, the main element according to the carrier 60 of the 6th embodiment comprises: passage stopper 8, have the spring receiving member 70 of bearing portions 70b and the record head 108 that is fixed to passage stopper 8 by channel plate 72.Channel plate 72 is provided with independently with spring receiving member 70.
In valve gear 1, remain on each balancing gate pit 4 1To 4 6In one of 6 passages of ink by corresponding channel plate 72 from corresponding liquid outlet 3 1To 3 6Supply to the respective nozzle row N of record head 108 1To N 6Then, ink as ink droplet from respective nozzles row N 1To N 6Be ejected into record-paper, so that record-paper is through printing.
The 6th embodiment has the following advantages.
Valve gear 1 is installed in the part of carrier 60.Valve gear 1 comprises that each all is connected to liquid inlet 2 1To 2 6One of corresponding and 6 liquid outlets 3 1To 3 6The corresponding balancing gate pit that keeps one of corresponding 6 kinds of color ink in the lump 4 1To 4 6, and 6 pressure regulators 5 1To 5 6When balancing gate pit 4 1To 4 6In pressure become when being lower than predeterminated level corresponding pressure regulator 5 1To 5 6By bearing part 6a greater than relevant pressure by thin-film member 6 1To 6a 6To balancing gate pit 4 1To 4 6The actuation force of the thrust that the strain of interior direction produces is transformed into opening.When balancing gate pit 4 1To 4 6In pressure when reaching predeterminated level, pressure regulator 5 1To 5 6Turn back to closure state, so that balancing gate pit 4 1To 4 6In ink pressure be reduced to predeterminated level.That is to say actuator lever 11 1To 11 6In each all produce actuation force greater than the thrust of thin-film member 6.Because this actuation force, corresponding pressure regulator overcome described " seal load " and open.This structure makes it can reduce each pressure regulator 5 1To 5 6 Pressure bearing part 6a 1To 6a 6The pressure bearing area.Therefore, can provide and have the quite little of pressure regulator and light carrier.
Spring receiving member 70 has each pressure regulator 5 of maintenance 1To 5 6 Pressure regulating spring 10 and passage stopper 8 effect together, and with the effect of the bearing portions 70b of axis of guide effect.This structure decrease the quantity of element.Therefore, can further reduce and reduce the thickness of sliding part 60, and reduce the cost that is used for carrier 60.
Have from liquid outlet 3 1To 3 6 Channel plate 72 to the passage of record head 108 is arranged between passage stopper 8 and the record head 108, and itself and spring receiving member 70 are independent.This structure provides the correcting mechanism that is used for the record head 108 between passage stopper 8 and channel plate 72.
Below with reference to the carrier 60A of Figure 19 explanation according to seventh embodiment of the invention.Carrier 60A is characterised in that the channel plate 72 and spring receiving member 70 whole formation of the 6th embodiment of the passage that is included in record head 108.In other words, to form as one with the channel plate part 72A of channel plate 72 the same manners formation with spring housing portion 70A with spring receiving member 70 the same manners formation.Synthetic parts 78 is fixed to passage stopper 8, so that form carrier 60A.Other structures of carrier 60A are identical with the corresponding construction of the carrier 60 of the 6th embodiment.
Except the advantage of the 6th embodiment, the 7th embodiment also has the following advantages.
Be connected to passage stopper 8 in order to assemble carrier 60A, comprise the channel plate part 72A that forms as one and 78 of the single elements of spring housing portion 70A.Then, record head 108 is fixed to element 78.So just reduced the step number that needs assembling carrier 60A.In carrier 60A, be not provided for the correcting mechanism of record head 108.Therefore, the positional precision of the record head 108 of passage stopper 8 is only relevant with the assembly precision by element 78 record heads 108 relative passage stoppers 8 relatively.
Below with reference to the carrier 60B of Figure 20 explanation according to eighth embodiment of the invention.Carrier 60B is characterised in that the passage stopper 8 that is limited to the 6th embodiment is with the liquid outlet 3 among the passage stopper 8B of spline structure 1To 3 6Be directly connected to record head 108.Other structures of carrier 60B are identical with the corresponding construction of the 6th embodiment carrier 60B.
Except the advantage of the 6th embodiment, the 8th embodiment also has the following advantages.
Because between passage stopper 8B and record head 108, do not need to be provided with channel plate 72 (referring to Figure 18), so, the quantity of element and the installation step quantity of carrier correspondingly reduced.Therefore, can reduce the cost that is used for carrier 60B.
Below with reference to the carrier 60C of Figure 21 explanation according to ninth embodiment of the invention.Carrier 60C is characterised in that pressure regulator 5 1To 5 6Each valve gear 1D that all plays the 6th embodiment of butterfly gate effect be installed among the carrier 60C.In Figure 21,6 pressure regulators 5 of the 6th embodiment have only been shown 1To 5 6 Pressure regulator 5 1
In valve gear 1D, replace the spring receiving member 70 of the 6th embodiment, be fixed to the lower surface of passage stopper 8 by the spring receiving member 70c that limits intercommunicating pore 41 formation in the spring receiving member 70.Intercommunicating pore 41 be positioned at valve body 9 valve shaft 12 below.Moving pin 42 is contained in the intercommunicating pore 41.
Pin actuator 50 is arranged on the pressure regulator 5 of valve gear 1D 1To 5 6Below each.
The present invention implements with following improved form.
In the 6th to the 9th embodiment, each pressure regulator 5 1To 5 6Valve body 9 can be improved to the L type valve body shown in Fig. 5 to 10.
Below with reference to the valve gear 1 of Figure 22 to 24 explanation according to tenth embodiment of the invention.As shown in figure 22, valve gear 1 comprises that the fluid pressure with balancing gate pit 4 is reduced to the pressure regulator 5 of predeterminated level.Balancing gate pit 4 is connected to liquid inlet 2 and liquid outlet 3 and keeps liquid such as ink.
Thin-film member 6 is by being that material such as PPS film (polyphenylene sulfide) from scientific meaning influences ink character made, and water, oxygen and nitrogen are shown relative low permeability.
Thin-film member 6 is fully thin to be used for bearing because the pressure of balancing gate pit 4 changes the strain that causes.For example, the film with 10 μ m or littler thickness is used for as thin-film member 6.Term by " thin-film member 6 is born because the pressure in the balancing gate pit 4 changes the strain that causes ", the meaning of expressing is, when the pressure in the balancing gate pit 4 is reduced to when being lower than predeterminated level, the elasticity of shape that the solid line of thin-film member 6 from Figure 24 represented is deformed into the shape that double dot dash line is represented among the figure, and when the pressure in the balancing gate pit 4 was increased to predeterminated level, the elasticity of shape that the double dot dash line of thin-film member 6 from Figure 24 represented was deformed into the shape that solid line is represented among the figure.
Valve body 9 moves between the closing position (position of Figure 22) that is used for liquid inlet 2 being connected to the enable possition of groove shape passage 7 and is used for liquid inlet 2 and groove shape passage 7 are disconnected.
Be connected with the circumference of thin-film member 6 by adhesive 121 with the sheet metal 120 that rectangular frame shape shape forms by SUS etc.As shown in figure 24, thin-film member 6 is fixed to the surface of passage stopper 8 by sheet metal 120, bends to the dome-type form of outside protrusion simultaneously.
The tenth embodiment has the following advantages.
Pressure regulator 5 is opened by the actuation force greater than the thrust that compresses actuator lever 11 by thin-film member 6.This structure decrease the pressure bearing area of thin-film member 6, make it can minimize and reduce the thickness of valve gear 1.
Thin-film member 6 is used for bearing because the pressure of balancing gate pit 4 changes the strain that causes for fully thin.Therefore, when thin-film member 6 compressed actuator lever 11, relatively little reaction force acts was on thin-film member 6.Therefore, the little pressure bearing area that has as dome-type case of bending can be installed.
To 25 (e) manufacture method of the valve gear 1 of the tenth embodiment is described with reference to Figure 25 (a) below, or more particularly, by 6 one-tenth dome-shaped shapes of protruding of crooked thin-film member, the installation method of the thin-film member 6 of passage stopper 8 relatively.
Manufacture method may further comprise the steps (1) to (4).
(1) by the step (referring to Figure 25 (a)) of adhesive 121 adhering film spares 6 with the sheet metal 120 of for example SUS;
In bonding step, for example, the film with 4 μ m or littler thickness is as thin-film member 6.The thickness of the layer that forms by adhesive 121 is 3 μ m, and the thickness of SUS sheet metal 120 is 30 μ m.
(2) by as etched process remove step corresponding to the part of the sheet metal 120 of the adhering film spare 6 of groove shape passage 7 openings (referring to Figure 25 (b);
(3) step (referring to Figure 25 (c)) by the crooked thin-film member 6 dome shapes of pressure moulding;
More particularly, in step (3), thin-film member 6 and sheet metal 120 are placed on reception mould 122 and compress between the container 123.Then, mould 122 and container 123 are placed in intimate contact.In this state, charging fluid (pressurization gas or pressurized liquid) supplies to the groove 123b of container 123 by the fluid intake 123a of container 123.Therefore, charging fluid compresses thin-film member 6, so that thin-film member 6 is according to the groove 122a distortion that receives mould 122.As a result, thin-film member 6 is deformed to the dome-shaped case of bending shown in Figure 25 (d) from the flat state shown in Figure 25 (c).
When thin-film member 6 process step (3) pressure mouldings, thin-film member 6 is heated.That is to say that thin-film member 6 is exposed to the temperature of the glass transition point that is equal to or higher than thin-film member.
For example, be used for as thin-film member if having the PPS film of 4 μ m thickness, the pressure moulding that then requires thin-film member 6 carries out under the pressure of 130 ℃ air themperature and 2.5atm.
(4) sheet metal 120 that will be connected with the thin-film member 6 that bends to dome-shaped shape (referring to Figure 25 (d)) is fixed on the surface of passage stopper 8 (referring to Figure 25 (e)).
To (4), shown in Figure 25 (e), the thin-film member 6 that bends to dome-shaped shape is fixed to passage stopper 8 according to step (1).
The manufacture method of valve gear 1 has the following advantages.
Thin-film member 6 is connected with the sheet metal 120 that the part of the opening of corresponding groove shape passage 7 has been removed.Then, sheet metal 120 is fixed to the surface of passage stopper 8 by adhesive 121.Therefore, be respectively fixed to passage stopper 8 with the thin-film member 6 of case of bending and compare, made things convenient for the processing of the thin-film member 6 of relative thin, fixing and location.
By heating thin-film member 6 in pressure moulding step (3), thin-film member 6 relatively easily is out of shape.Therefore, stablized the dome-type curved shape of thin-film member 6.
For example, by thin-film member 6 being exposed to the temperature of the glass transition point that is equal to or higher than thin-film member 6, stablized the thin-film member 6 of dome-shaped deformed shape.Therefore, can minimize the amount (thin-film member 6 is from the deflection of dome-type curved shape) of the long deformation of thin membrane of mistake that causes owing to the power that reacts to distortion.
Below with reference to the valve gear 1A of Figure 26 explanation according to eleventh embodiment of the invention.
In valve gear 1A, use the ink of 6 kinds of colors, for example, each all keeps 6 groove shape passages 7 of corresponding a kind of color ink 1To 7 6Be arranged in parallel and be provided with 6 pressure regulators 5 1To 5 6The surface that thin-film member 6A bonds to passage stopper 8A is used for seal groove shape passage 7 1To 7 6Opening.Define six balancing gate pits 4 like this 1To 4 6
The present invention implements with following improved form.
In the manufacture method of the valve gear shown in 25 (e), have the PPS film of 10 μ m or littler thickness at Figure 25 (a), for example the PPS film of 4 μ m is as thin-film member 6.Yet, cause the thin-film member 6 of strain fully thin as long as be used for bearing because the pressure of balancing gate pit 4 changes, thin-film member 6 is not limited to the structure of the embodiment of explanation.That is to say that the thickness of thin-film member 6 is not limited to 10 μ m or 4 μ m.
In above-mentioned manufacture method, the PPS film with 4 μ m thickness as thin-film member 6 and thin-film member 6 through for example 130 ℃ the air themperature and the pressure moulding of 2.5atm pressure.Yet temperature is not limited to 130 ℃, but can change into different values.Equally, though the pressure of 2.5atm is applied in 130 ℃ the air in embodiment, pressure is not limited to this level.
In the manufacture method of the valve gear 1 shown in 25 (e), the step (3) by 6 one-tenth domed shapes of the crooked thin-film member of pressure moulding is carried out before in the step (4) that the sheet metal of having removed corresponding to the part of the opening of groove shape passage 7 120 is fixed to the surface of passage stopper 8 at Figure 25 (a).Yet the pressure moulding step (3) of thin-film member 6 also can be carried out afterwards in the step (4) that sheet metal 120 is fixed to the surface of passage stopper 8.
Below with reference to the valve gear 1 of Figure 27 to 29 explanation according to twelveth embodiment of the invention.
As shown in figure 27, in valve gear 1, inlet 17a (referring to Figure 28) and outlet 18a are limited among the bottom surface 7a of groove shape passage 7.Inlet 17a opens selectively or closes by valve body 9.When valve body 9 is positioned at the enable possition, liquid from the liquid inlet 2 by the inlet 17a deliver to balancing gate pit 4.Liquid in the balancing gate pit 4 enters into liquid outlet 3 by outlet 18a.Inlet 17a is corresponding to the opening of the intercommunicating pore 17 that is positioned at bottom surface 7a.Outlet 18a is corresponding to the opening of the exit passageway 18 that is positioned at bottom surface 7a.
In addition, valve gear 1 comprises baffle 220.Baffle 220 is between inlet 17a and outlet 18a and on the bottom surface 7a of groove shape passage 7.As shown in figure 29, baffle 220 can hold by the passage shape pressing section 11b of actuator lever 11.Flow to balancing gate pit 4 as the ink of liquid from inlet 17a, and pass the space that the pressing section 11b by actuator lever 11 limits.The ink that flows in the space that is limited by pressing section 11b stops by the end face 220a of baffle 220, returns the support end 11a towards actuator lever 11 then.Baffle 220 is corresponding to the bubble discharge section.Baffle 220 is directed to the some or all of inks that supply to balancing gate pit 4 from liquid inlet 2 the support end 11a of the actuator lever 11 the balancing gate pit 4.
For example, if actuator lever 11 in downward direction strain, then the ink that stops by baffle 220 passes the space that is limited by passage shape pressing section 11b and flows to support end 11a.After the adjacent domain that arrives support end 11a, ink continues to flow along the outside (left side and right outer survey) of actuator lever 11 and flows to outlet 18a.
The 12 embodiment has the following advantages.
In balancing gate pit 4, foam can remain on the adjacent domain (the part F of Figure 27) of the support end 11a of actuator lever 11.In other words, foam remains on the adjacent domain of support end 11a of the exit passageway 18 of relative intercommunicating pore 17.The foam that keeps compresses and enters into the adjacent domain of support end 11a by the ink that is stoped by baffle 220, so that foam is discharged to liquid outlet 3 by exit passageway 18 from outlet 18a.This architecture advances the foam discharging performance of valve gear 1.
The foam passing away bends to the actuator lever 11 of passage shape shape by employing the advantage of shape of pressing section 11b limits.
Below with reference to Figure 30 and the 31 valve gear 1A that illustrate according to thirteenth embodiment of the invention.Valve gear 1A is different from the valve gear of the 12 embodiment at following point.
The pressing section 11b that compresses the actuator lever 11A of valve body 9 does not form in the mode of passage shape, but forms so that pressing section 11b has flat pressing surface as lower surface in this way.Pressing section 11b forms the thickness that has greater than support end 11a, therefore has quite high rigidity.Shown in Figure 30 and 31, in valve gear 1A, passage limitative aspect 221 is arranged between inlet 17a and the outlet 18a and on the bottom surface 7a of groove shape passage 7.Passage limitative aspect 221 forms the foam discharge section and limits first passage 221a and second channel 221b.First passage 221a will be directed to the support end 11a of actuator lever 11A from the ink that inlet 17a enters into balancing gate pit 4.Second channel 221b will be directed to outlet 18a by the ink that first passage 221a is directed to the support end 11a of actuator lever 11A.First passage 221a and second channel 221b are between the sidewall of passage limitative aspect 221 and groove shape passage 7.Each of the first and second passage 221a, 221b all forms the passage that basically forms to " 9 " shape.
Except the advantage of the 12 embodiment, the 13 embodiment also has the following advantages.
After flowing to balancing gate pit 4 from inlet 17a, ink flows to the support end 11a of the actuator lever 11A in the balancing gate pit 4 by the guiding of the first passage 221a of passage limitative aspect 221.Then, ink is directed to outlet 18a by second channel 221b.Therefore, the ink of foam by the support end 11a place of actuator lever 11A that remains in the adjacent domain (the part F of Figure 30) of support end 11a is extruded, so that foam is discharged to liquid outlet 3 by exit passageway 18 from outlet 18a.This architecture advances the foam discharging performance of valve gear 1A.
Below with reference to the valve gear 1B of Figure 32 explanation according to fourteenth embodiment of the invention.In Figure 32, valve gear 1B is to be shown with the horizontal reverse manner of the valve gear 1 of relative Figure 27.Different as follows between valve gear 1B and the 12 embodiment.
Shown in figure 32, in valve gear 1B, be provided with prevention plate 223 and the mobile plate 24 that is provided with.Stop plate 223 and flow and plate 24 is set each all forms the foam discharge section.Stop plate 223 to be arranged between inlet 17a and the outlet 18a, and on the bottom surface 7a of groove shape passage 7.Stop plate 223 to stop to deliver to the ink of balancing gate pit 4, make ink oppositely flow back to the support end 11a of actuator lever 11A from inlet 17a.
The through hole 24a that valve shaft 12 passes wherein is limited to mobile the setting in the plate 24.
Except the advantage of the 12 embodiment, the 14 embodiment also has the following advantages.
After arriving balancing gate pit 4 from inlet 17a, ink stops by the prevention plate 223 in the balancing gate pit 4, and flows mobile the setting in the space that limits between the bottom surface 7a of plate 24 and groove shape passage 7, therefore arrives the support end 11a of actuator lever 11A.Then, ink moves in the space relaying afterflow that limits between the pressing surface (lower surface) that plate 24 and actuator lever 11A are set of flowing, and arrives outlet 18a.Therefore, the ink of foam by the support end 11a place by actuator lever 11A that remains in the support end 11a adjacent domain (the part F of Figure 32) compresses, so that foam is discharged to liquid outlet 3.Therefore improved the foam discharging performance of valve gear 1B.
Below with reference to the valve gear 1C of Figure 33 to 35 explanation according to fifteenth embodiment of the invention.
Valve gear 1C is different from the 12 embodiment at following point.
Shown in Figure 33 to 35, in valve gear 1C, be provided with inlet 17a, first outlet, 131 and second outlet 132.Inlet 17a is limited among the bottom surface 7a of groove shape passage 7 and by valve body 9 and opens selectively or close.When valve body 9 was positioned at the enable possition, ink 2 flow to balancing gate pit 4 by liquid inlet 17a from the liquid inlet.Ink is delivered to liquid outlet 3 by the adjacent domain of the support end 11a of the first actuator lever 11A of outlet 131 from groove shape passage 7.Ink is delivered to liquid outlet 3 by the terminal 11c adjacent domain of second outlet 132 actuator lever 11A of relative support end 11a from groove shape passage 7.
Passage stopper 8C comprises first exit passageway 133, second exit passageway 34 and third channel 35, its each all as the foam discharge section.First exit passageway 133 extends to the lower surface 8a of passage stopper 8C from first exit opening 131.Second exit passageway 34 extends to lower surface 8a from second exit opening 132.After ink passed first and second exit passageways 133 and 34, third channel 35 direct ink were to liquid outlet 3.
Except the advantage of the 12 embodiment, the 15 embodiment also has the following advantages.
After arriving balancing gate pit 4 from inlet 17a, ink flow to the support end 11a of the actuator lever 11A in the balancing gate pit 4.Then, ink enters first exit passageway 133 and delivers to third channel 35 from first exit opening 131.In balancing gate pit 4, ink also flows to the adjacent domain of the terminal 11c of the actuator lever 11A relative with support end 11a.Then, ink is delivered to second exit passageway 34 from second exit opening 132, therefore flows to third channel 35.After arriving third channel 35, ink is delivered to liquid outlet 3 by exit passageway 18.Therefore, the ink that passes the support end 11a of the actuator lever 11A in the balancing gate pit 4 moves the foam of the adjacent domain that remains on support end 11a, so that foam is discharged from first exit opening 131.Therefore improve the foam discharging performance.
Foam is discharged by first exit passageway 133, second exit passageway 34 and the third channel 35 that are separately positioned among the passage stopper 8C.Therefore discharge on foam stabilization ground.
Below with reference to the valve gear 1D of Figure 36 explanation according to sixteenth embodiment of the invention.
Valve gear 1D is characterised in that the structure of the pressure regulator 5 of the 12 embodiment shown in Figure 27 plays the effect of butterfly gate.
The present invention implements with following improved form.
The valve body 9 of the 12 to the 15 embodiment can be improved to the L type valve body shown in Fig. 5 to 10.
The following describes according to seventeenth embodiment of the invention.As shown in figure 37, the passage stopper 8D as the carrying support body of carrier 60D forms by the plate for basic rectangle.With reference to Figure 38,6 groove shape passages 7 1To 7 6Be limited in the upper surface of passage stopper 8.Groove shape passage 7 1To 7 6Each all as being used to the passage of the ink of liquid, and as shown in figure 38, form to watch and be rectangular shape along horizontal plane.
As shown in figure 37, each all forms the actuator lever 11 of part crushed element 1To 11 6For each all is arranged on by groove shape passage 7 1To 7 6One of the corresponding opening (top) that limits in.
As shown in figure 37, film baffle 74 is arranged on the thin-film member 6.Film baffle 74 forms by having less times greater than the rectangle plate of the profile of the profile of thin-film member shown in the figure 6.The excircle part of thin-film member 6 is fixed to passage stopper 8D by film baffle 74.Groove 74a bears part 6a at relative pressure 1To 6a 6The position be limited to the lower surface of film baffle 74.Groove 74a have from rectangular shape and the direction strain that allows thin-film member making progress.In Figure 38, each balancing gate pit 4 has been described 1To 4 6Internal structure, the explanation of having omitted film baffle 74.
Shown in Figure 37 and 38, all be limited to each groove shape passage 7 as the intercommunicating pore 17 of inlet with as the exit passageway 18 that exports 1To 7 6Relative vertical end of bottom surface.With reference to Figure 37, each intercommunicating pore 17 is all from relevant pressure chamber 4 1To 4 6The bottom surface extend downwards and be used for ink is introduced balancing gate pit 4 1To 4 6As shown in the figure, pressure regulator 5D is arranged on each groove shape passage 7 1To 7 6Below.In other words, 6 pressure regulator 5D are arranged on corresponding to balancing gate pit 4 1To 4 6 Corresponding intercommunicating pore 17 below.With reference to Figure 37, each exit passageway 18 all passes through from relevant pressure chamber 4 1To 4 6The bottom surface extend to ink from the balancing gate pit 4 1To 4 6The circular hole of the lower surface 8a of the passage stopper 8 of discharging is limited.Record head 108 be positioned at exit passageway 18 below.
With reference to Figure 39 and 40 pressure regulator 5D is described according to the present invention below.Figure 39 has shown the side cross-sectional view of carrier 60 major parts, and Figure 40 has shown the cross-sectional plan view of pressure regulator 5D major part.
As shown in figure 39, each pressure regulator 5D comprises as valve body and holds the liquid supply chamber 16 of passage, the liquid regulating spring 10 that forms retaining part, valve body 9 and as the O type circle 13 of hermetic unit.
With reference to Figure 39, liquid supply chamber 16 in the mode of amplifying corresponding to the circular cells that extend downwards from each through hole 17.Shown in figure, be limited among the inner circumferential surface 16a of liquid supply chamber 16 as the access road 15 of communication passage.Each access road 15 all is the ink channel that is limited among the passage stopper 8D, and is connected to corresponding liquid inlet 2 1To 2 6(referring to Figure 37), its each all as the connected entrance in the side that is limited to passage stopper 8D.Each liquid inlet 2 1All passage stopper 8D is connected to ink carrier 109,110 (referring to Figure 41), liquid supply part to 26 by pipe.After sending from ink carrier 109,110, ink is from the liquid inlet 2 1Flow to access road 15 to 26, arrive liquid supply chamber 16 then.That is to say that passage stopper 8D comprises 6 access roades 15 and 6 liquid inlets 2 corresponding to the quantity of pressure regulator 5D 1To 2 6
As shown in figure 39, positioning salience divides 16b to protrude from the bottom of each liquid supply chamber 16.Positioning salience divides 16b to have the shape of frustum-like shape.With reference to Figure 39, positioning salience divides the lower end diameter of 16b to be slightly less than the internal diameter of liquid supply chamber 16.
With reference to Figure 39, pressure regulating spring 10 is fixed to positioning salience and divides 16b.Pressure regulating spring 10 is the oval section volute spring shown in the figure.Pressure regulating spring 10 be set in case have the end of relatively short external spiral diameter (screw diameter) or upper part 10a be positioned at end with big relatively screw diameter or end portion 10b above.Shown in Figure 39 and 40, the screw diameter of upper part 10a (upper end screw diameter R1) equals the internal diameter of intercommunicating pore 17 substantially.The screw diameter of end portion 10b (lower end screw diameter R2) equals the internal diameter of liquid supply chamber 16 substantially.As shown in figure 39, pressure regulating spring 10 divides 16b and the inner periphery effect of end portion 10b to orientate the position of the horizontal direction of relative liquid supply chamber 16 as by positioning salience.
Valve body 9 is arranged between the upper part 10a of pressure regulating spring 10 and the upper surface 16c of liquid supply chamber 16 (the excircle part of intercommunicating pore 17).Valve body 9 comprises valve shaft 12 and as the clamping plate 14 of spring housing portion.
With reference to Figure 39 and 40, valve shaft 12 limits by columnar shaft.The overall diameter of valve shaft 12 is shorter than the internal diameter (upper end screw diameter R1) of intercommunicating pore 17.As shown in figure 39, the relative upper and lower end of valve shaft 12 inserts the upper part 10a of intercommunicating pore 17 and pressure regulating spring 10 respectively, so that allow valve body 9 to move up and down.Ink in the liquid supply chamber 16 inserts balancing gate pit 4 by the space between the wall of valve shaft 12 and intercommunicating pore 17 1To 4 6
With reference to Figure 39 and 40, clamping plate 14 are to watch the mid portion that is formed at valve shaft 12 for foursquare substantially shape along horizontal plane.As shown in figure 39, clamping plate 14 extend perpendicular to valve shaft 12 and between upper part 10a and upper surface 16c.As shown in figure 40, the external peripheral surface of clamping plate 14 comprises the slidingsurface 14a that slides along inner circumferential surface 16a and blocks surperficial 14b.Block surperficial 14b by forming, so that block surperficial 14b and inner circumferential surface 16a is spaced a distance with the part of equal angles cut-space slidingsurface 14a.Clamping plate 14 bear the thrust of pressure regulating spring 10 of the lower surface of contact clamp 14, therefore advance valve body 9 to upper surface 16c consistently.The slidingsurface 14a of clamping plate 14 slides along inner circumferential surface 16a, so that allow 9 above-below directions along inner circumferential surface 16a of valve body to move.Ink is delivered to intercommunicating pore 17 by the gap of blocking between surperficial 14b and the inner circumferential surface 16a from clamping plate below 14.
As shown in figure 39, O type circle 13 is fixed to the upper surface (upper surface 16c relatively) of clamping plate 14.As shown in figure 40, O type circle 13 is positioned at the position than the axis that blocks the more close valve shaft 12 of surperficial 14b.O type circle 13 has the O type loop diameter R3 greater than upper end screw diameter R1.Watch along horizontal plane, the upper part 10a of pressure regulating spring 10 is positioned at from O type circle 13 radially inner positions.
As long as the valve body 9 that advances to upper surface 16c by pressure regulating spring 10 does not react to the power of the thrust of pressure regulating spring 10, valve body 9 just remains on clamping plate 14 and upper surface 16c keeps and O type circle 13 tight position contacting (closing position).More particularly, unless valve body 9 bears aforesaid reaction force, valve body 9 remains on and is used to stop providing ink to the balancing gate pit 4 1To 4 6Closing position.As shown in figure 39, because valve body 9 remains on closing position, so, the upper end of valve shaft 12 relative respective grooves shape passage 7 1To 7 6The bottom surface constant protruding upward.
When providing ink is closed by valve body 9, because ink is by record head 108 consumption, so balancing gate pit 4 1To 4 6In pressure be reduced to predeterminated level (for example, record head 108 prevents to produce the minimum pressure that ink sprays problem).In this state, pressure bearing part 6a 1To 6a 6To balancing gate pit 4 1To 4 6Under the direction strain, therefore reduce pressing section 11b 1To 11b 6Pressing section 11b 1To 11b 6Utilize leverage to compress valve shaft 12.That is to say, relatively the pressing section 11b of valve shaft 12 1To 11b 6By reduce the upper end of valve shaft 12 greater than the actuation force of the thrust of thin-film member 6.More particularly, when balancing gate pit 4 1To 4 6In pressure when being reduced to predeterminated level, valve body 9 moves to the position (enable possition) that O type circle 13 and upper surface 16c are spaced a distance from closing position, so that allow providing ink to balancing gate pit 4 1To 4 6
When providing ink arrives balancing gate pit 4 1To 4 6The time, balancing gate pit 4 1To 4 6In pressure increase from predeterminated level.When balancing gate pit 4 1To 4 6In pressure when increasing, pressure bearing part 6a 1To 6a 6To balancing gate pit 4 1To 4 6On direction elasticity return to original shape.In this mode, pressing section 11b 1To 11b 6Raise.In this state, the pressing section 11b of relative valve shaft 12 1To 11b 6Separate with the upper end of valve shaft 12, therefore discharge actuation force.In other words, deliver to balancing gate pit 4 when ink 1To 4 6The time, valve body 9 turns back to closing position from the enable possition, supplies to balancing gate pit 4 so that close 1To 4 6Ink.
The upper part 10a that has less than the upper end screw diameter R1 of O type loop diameter R3 advances valve body 9 in the position at the center of closing O type circle 13 by clamping plate 14 relative upper part 10a to upper surface 16c.That is to say,, wherein act on the some central point or the fulcrum of close relatively O type circle 13 in the thrust that the valve body 9 of closing position bears pressure regulating spring 10.In this mode, the clamping plate 14 of valve body 9 are closely placed along whole circumference and O type circle 13.
As shown in figure 41, vibration plate 61 and piezoelectric element 108b is at each more than the nozzle NZ.
Vibration plate 61 forms by board-like material and vibrates corresponding to the operation of piezoelectric element 108b.According to the picture signal that produces based on print image data, piezoelectric element 108b extends or compression in the direction of extension of the direction of spraying along ink.When picture signal was input to piezoelectric element 108b, vibration plate 61 was corresponding to stretching, extension or the compressional oscillation of piezoelectric element 108b.Therefore, the volume of nozzle NZ increases or reduces.If the volume of nozzle NZ reduces, then the ink among the nozzle NZ is as ink droplet jet.If the volume of nozzle NZ increases, then in nozzle NZ, produce negative pressure, negative pressure makes the color inks corresponding to nozzle NZ supply to nozzle NZ.
Printer 100 is along sub-scanning direction Y feeding record-paper and along the reciprocally mobile carrier 60D of main scanning direction X.
As shown in figure 41, absorber 65 secure fit that are used to absorb ink are entered the space that limits by cover piece 112.Absorber 65 constitutes by for example sponge thin slice, or is formed by porous material.
Corresponding with valve body 9 moving back and forth between closing position and enable possition, pressure regulator 5D will be reduced to predeterminated level from the pressure that carrier 60D is fed into the ink of record head 108.In this mode, avoided producing the excess pressure rising that ink sprays the pressure regulator 5D of problem.
The embodiment that illustrates has the following advantages.
(1) the upper part 10a that has less than the upper end screw diameter R1 of O type loop diameter R3 advances valve body 9 in the position near O type circle 13 centers to upper surface 16c.Therefore, the clamping plate 14 that are positioned at the valve body 9 of closing position are closely placed along whole circumference and O type circle 13.So stoped providing ink to the balancing gate pit 4 reliably 1To 4 6Therefore, pressure regulator 5D controls providing ink reliably to the balancing gate pit 4 1To 4 6And the ink of from then on discharging, thereby improve the pressure controlled stability of passing through carrier 60D.
(2) in the embodiment of explanation, have greater than the end portion 10b of the lower end screw diameter R2 of upper end screw diameter R1 and divide 16b to position by positioning salience as the basis end of pressure regulating spring 10.Therefore, although valve body 9 advances less than the described upper part 10a of O type loop diameter R3 by upper end screw diameter R1, but still can prevent that pressure regulating spring 10 from becoming bending or being displaced to deviation position.As a result, further stablized valve body 9 (O type circle 13) moving back and forth between enable possition and closing position, thereby realized regulating and improve stability by the pressure of carrier 60D.
(3) each all forms along the external peripheral surface 16a of valve body 9 (clamping plate 14) along the slidingsurface 14a that inner circumferential surface 16a slides.Therefore, guiding valve body 9 moving back and forth along inner circumferential surface 16a.Can prevent stably that so also valve body 9 from moving to deviation position.
(4) block the excircle setting of surperficial 14b with inner circumferential surface 16a is spaced a distance along valve body 9 (clamping plate 14).This structure has reduced the slip load of the valve body 9 of relative inner circumferential surface 16a.In addition, inner circumferential surface 16a and block gap between the surperficial 14b and reduced flow resistance in the liquid supply chamber 16.As a result, moving back and forth of valve body 9 becomes further level and smooth, thereby realizes regulating and improve stability by the pressure of carrier 60D.
The embodiment of above-mentioned explanation can improve as follows.
In the embodiment of above-mentioned explanation, pressure regulating spring 10 has conical in shape.Yet pressure regulating spring 10 also can form the round barrel shape shape.As long as pressure regulating spring 10 can be used any suitable structure advancing valve body 9 from O type loop diameter R3 radially inner position contact valve body 9 and to closing position.
Though the quantity of blocking surperficial 14b that forms at interval with equal angles is 4 in the embodiment of explanation, this quantity also can be for example 1.As long as the surface of inner circumferential surface 16a one segment distance forms along the external peripheral surface of clamping plate 14 at interval, can adopt any suitable structure.
In the embodiment of above-mentioned explanation, O type circle 13 is fixed to the clamping plate 14 of valve body 9.Yet O type circle 13 also can be fixed to for example upper surface 16c of liquid supply chamber 16.O type circle 13 allows to be placed in intimate contact with clamping plate 14 and upper surface 16c as long as O type circle 13 is orientated as, can adopt any suitable structure.
In the embodiment of above-mentioned explanation, block the external peripheral surface formation of surperficial 14b along clamping plate 14.Yet cutting part also can be along inner circumferential surface 16a, vertically formation.As long as the gap that ink passes through is limited between inner circumferential surface 16a and the clamping plate 14, can select any suitable structure.
Though at this some embodiments of the present invention have been described, those skilled in the art should be understood that the present invention can and can not break away from theme tone of the present invention with other concrete forms enforcements.The present invention is not limited to above-mentioned explanation, and can improve in the protection domain of appended claims.

Claims (28)

1. valve gear, it has and is connected to the balancing gate pit that liquid inlet and liquid outlet are used to keep liquid, and the pressure in the balancing gate pit is reduced to the pressure regulator of predeterminated level,
Wherein said pressure regulator has pressure bearing spare, and when the pressure in the balancing gate pit becomes when being lower than predeterminated level, described pressure bearing spare is in the direction strain in the balancing gate pit,
Wherein said pressure regulator produces the actuation force of the thrust that produces greater than the strain by pressure bearing spare, and described pressure regulator constitutes by actuation force and opens, and when pressure regulator is opened, allows liquid to supply to the balancing gate pit by the liquid inlet,
Wherein said valve gear has the passage stopper, and described passage stopper comprises the groove shape passage that is connected to liquid inlet and liquid outlet, and described pressure bearing spare limits described balancing gate pit by seal groove shape passage, and wherein said pressure regulator comprises:
The valve body that between the closing position that is used for the liquid inlet being connected to the enable possition of groove shape passage and is used for liquid inlet and groove shape passage are disconnected, moves; And
By bearing the compressing member that thrust produces actuation force, wherein when bearing thrust, described compressing member is delivered to valve body with actuation force and is used for valve body is moved to the enable possition,
Described valve gear is characterised in that:
Described compressing member comprises the actuator lever that is arranged in the groove shape passage and plays cantilever action, and described actuator lever has the support end that supports by the passage stopper; And
Described valve body is positioned such that valve body bears actuation force from the part than the actuator lever of the more close support end of center of gravity of actuator lever.
2. valve gear according to claim 1 is characterized in that:
Described compressing member is also with acting on the force amplificatory structure that thrust is amplified to actuation force.
3. valve gear according to claim 2 is characterized in that:
Described force amplificatory structure comprises and being used for by bearing the leverage that thrust produces actuation force.
4. valve gear according to claim 1 is characterized in that:
Pressure regulator also comprises the pressure regulating spring that is used for advancing to described closing position valve body, and the propulsive force of described compressing member relative pressure regulating spring advances valve body to the enable possition.
5. valve gear according to claim 1 is characterized in that:
Described actuator lever comprises the end of relative support end, and described actuator lever is being born thrust from the support end to the end.
6. valve gear according to claim 1 is characterized in that:
Described actuator lever comprises the pressing section that is used to contact and compress valve body, and the rigidity that described support end has is lower than the rigidity of pressing section.
7. valve gear according to claim 6 is characterized in that:
Described actuator lever forms by plate, and described pressing section has the cross sectional shape of passage shape.
8. valve gear according to claim 4 is characterized in that:
Described valve gear comprises valve shaft and hermetic unit; And
Described passage stopper comprises:
The access road that comprises the liquid inlet;
Be connected to described access road and hold valve body and the liquid supply chamber of pressure regulating spring;
The liquid supply chamber is connected to the intercommunicating pore of balancing gate pit, and described valve shaft passes the intercommunicating pore with the gap between the circumferential surface that is limited to valve shaft and intercommunicating pore; And
Along the sealing surfaces of the described relatively hermetic unit of circumference of intercommunicating pore, the relative sealing surfaces of described pressure regulating spring compresses described hermetic unit.
9. valve gear according to claim 8 is characterized in that:
The liquid supply chamber is included in the opening of described relatively intercommunicating pore position;
Described passage stopper also comprises the keeper that is used for seal fluid supply chamber opening; And
Described pressure regulating spring is arranged between valve body and the keeper.
10. valve gear according to claim 4 is characterized in that:
Described valve body is L type bar substantially, described L type bar rotatably supports by the passage stopper in groove shape passage, described L type bar has first bar part that comprises hermetic unit and the second bar part that compresses by compressing member, described first bar part integrally forms with described second bar part, and described L type bar advances to described closing position by described pressure regulating spring.
11. valve gear according to claim 1 is characterized in that:
Described groove shape passage is one of a plurality of groove shape passages that keep dissimilar liquid, and described groove shape channel parallel is arranged.
12. valve gear according to claim 1 is characterized in that:
Wherein the foam discharge section is used at least some liquid that supplies to the balancing gate pit from the liquid inlet is directed to the neighbouring part of the support end of balancing gate pit's actuator lever;
Described actuator lever forms by plate, and described actuator lever has the described pressing section that is used to compress described valve body, and described pressing section has passage shape cross sectional shape;
Entrance and exit is limited to the bottom of groove shape passage, described inlet is opened selectively or is closed by described valve body, when valve body was placed on the enable possition, liquid flow to the balancing gate pit by inlet from the liquid inlet, and described outlet allows liquid to flow to liquid outlet from the balancing gate pit; And
The foam discharge section comprises the baffle between the entrance and exit that is arranged on the groove shape passage bottom, and after flowing to the balancing gate pit from inlet, described baffle stops liquid to pass the space that is limited by described pressing section, so that liquid stream points to the support end of actuator lever.
13. valve gear according to claim 1 is characterized in that:
Wherein the foam discharge section is used at least some liquid that supplies to the balancing gate pit from the liquid inlet is directed to the neighbouring part of the support end of balancing gate pit's actuator lever;
Actuator lever has the pressing section that is used to compress described valve body, and described pressing section comprises flat pressing surface, and described pressing section constitutes has the rigidity that is higher than described support end;
Entrance and exit is limited to the bottom of groove shape passage, described inlet is opened selectively or is closed by valve body, when described valve body is placed on the enable possition, liquid flows to described balancing gate pit by inlet from described liquid inlet, and described outlet allows liquid to flow to described liquid outlet from described balancing gate pit; And
Described foam discharge section comprises the passage limitative aspect that is arranged on the groove shape passage bottom, described passage limitative aspect is defined for the liquid that will deliver to described balancing gate pit from described inlet and is directed to the first passage of the described support end of described actuator lever, and the liquid that is used for delivering to described support end by described first passage is directed to the second channel of described outlet.
14. valve gear according to claim 1 is characterized in that:
Wherein the foam discharge section is used at least some liquid that supplies to the balancing gate pit from the liquid inlet is directed to the neighbouring part of the support end of balancing gate pit's actuator lever;
Described actuator lever has the pressing section that is used to compress described valve body, and described pressing section comprises flat pressing surface, and described pressing section constitutes has the rigidity that is higher than described support end;
Entrance and exit is limited to the bottom surface of described groove shape passage, described inlet is opened selectively or is closed by described valve body, when described valve body is placed on described enable possition, liquid flows to the balancing gate pit by described inlet from the liquid inlet, and described outlet allows liquid to flow to described liquid outlet from described balancing gate pit; And
The foam discharge section has the prevention plate and the fluid that are arranged on the groove shape passage bottom plate is set, and described prevention plate is between described inlet and described outlet, wherein:
Described prevention plate resistance is ended liquid and is flow to described balancing gate pit from described inlet, and liquid is flowed the described support end that points to described actuator lever, and
Described fluid is provided with that plate is limited to that described fluid is provided with first pipeline that extends between plate and the described groove shape passage bottom and second pipeline that extends between the described seal face of plate and described actuator lever is set at described fluid, be directed into described support end by the liquid that stops plate to point to the support end of actuator lever by first pipeline, the liquid that is directed to described support end is directed to described outlet by second pipeline.
15. valve gear according to claim 1 is characterized in that:
Wherein the foam discharge section is used at least some liquid that supplies to the balancing gate pit from the liquid inlet is directed to the neighbouring part of the support end of balancing gate pit's actuator lever;
Described actuator lever has the pressing section that is used to compress described valve body, and described pressing section constitutes has the rigidity that is higher than described support end;
Inlet, first outlet and second outlet all are limited to the bottom surface of groove shape passage, described inlet is opened selectively or is closed by valve body, and when valve body is placed on the enable possition, allow liquid to flow to described balancing gate pit from described liquid inlet, described first outlet allows liquid to flow to liquid outlet from the part corresponding to the groove shape passage of the support end of actuator lever, and described second outlet allows liquid to flow to described liquid outlet from the part of the described groove shape passage of described relatively support end; And
Described foam discharge section comprises: have first outlet and be limited to first exit passageway in the passage stopper, have second outlet and be limited to second exit passageway in the passage stopper and be limited to the third channel that is used for described first and second exit passageways are connected to described liquid outlet in the passage stopper.
16. valve gear according to claim 1 is characterized in that:
Described pressure bearing spare is a thin-film member, and described thin-film member is fully thin to be resiliently deformable under the variation of the pressure in the balancing gate pit, and described thin-film member is fixed to described passage stopper, keeps the dome-shaped curved shape that outwards protrudes from described balancing gate pit simultaneously.
17. valve gear according to claim 16 is characterized in that:
Described thin-film member is formed by polyphenylene sulfide, and described thin-film member has 10 μ m or littler thickness.
18. valve gear according to claim 4 is characterized in that:
Pressure regulating spring is an oval section volute spring, and described helical spring has first end that can contact valve body and second end of relative first end, and the screw diameter of described second end is greater than the screw diameter of first end.
19. valve gear according to claim 18 is characterized in that:
Described passage stopper comprises and is connected to described liquid inlet and holds valve body and the liquid supply chamber of pressure regulating spring, and the intercommunicating pore that described liquid supply chamber is connected to described balancing gate pit;
The annular seal part at part place of clamping plate that described valve body has the clamping plate that can close described intercommunicating pore and is arranged on the excircle part of described relatively intercommunicating pore; And
The part of the clamping plate of the relative intercommunicating pore of described helical spring first end in contact, described first end are orientated as from described annular seal part radially inside.
20. valve gear according to claim 18 is characterized in that:
Described passage stopper comprises the liquid supply chamber that is connected to described liquid inlet and holds described valve body and described pressure regulating spring, and the intercommunicating pore that described liquid supply chamber is connected to described balancing gate pit;
The annular seal part that described valve body has the clamping plate that can close described intercommunicating pore and is arranged on the part place of the excircle described clamping plate partly of facing described intercommunicating pore; And
The screw diameter at the described helical spring first end place is equal to or less than the internal diameter of described annular seal part.
21. valve gear according to claim 18 is characterized in that:
Described passage stopper comprises the liquid supply chamber that is connected to the liquid inlet and holds described valve body and described pressure regulating spring, the intercommunicating pore that described liquid supply chamber has inner circumferential surface and described liquid supply chamber is connected to described balancing gate pit; And
Described valve body has the clamping plate that can close described intercommunicating pore, and wherein said clamping plate comprise along the inner circumferential surface of described liquid supply chamber slidingsurface slidably, and limits the surface of blocking with respect to the gap of the inner circumferential surface of described liquid supply chamber.
22. a carrier comprises:
Be connected to the balancing gate pit that liquid inlet and liquid outlet are used to keep liquid;
Pressure in the described balancing gate pit is reduced to the pressure regulator of predeterminated level, and
Jet head liquid,
Wherein pressure regulator has pressure bearing spare, when the pressure in the balancing gate pit becomes when being lower than predeterminated level, described pressure bearing spare is resiliently deformable in the direction in the balancing gate pit, described pressure regulator produces the actuation force of the thrust that produces greater than the strain by pressure bearing spare, described pressure regulator constitutes by described actuation force and opens, when described pressure regulator is opened, allow liquid to supply to described balancing gate pit from described liquid inlet
Wherein pressure regulator comprises:
Passage stopper with the groove shape passage that is connected to liquid inlet and liquid outlet, described groove shape passage seals by the thin-film member as pressure bearing spare, so that limit compressing member;
The valve body that between the closing position that is used for the liquid inlet being connected to the enable possition of groove shape passage and is used for liquid inlet and groove shape passage are disconnected, moves;
Be used for advancing the pressure regulating spring of described valve body to described closing position; And
Be used for by bearing the compressing member that thrust produces actuation force, described compressing member is delivered to described valve body with actuation force, and when bearing thrust to the enable possition mobile valve,
Described carrier is characterised in that:
Described compressing member is the actuator lever that is arranged in the groove shape passage and plays cantilever action, and described actuator lever has the support end that supports by described passage stopper; And
Described valve body is located such that valve body bears from the actuation force than the actuator lever at the part place of the actuator lever of the more close described support end of center of gravity of actuator lever.
23. carrier according to claim 22 is characterized in that:
Described pressure regulator is one of a plurality of pressure regulators, and described groove shape passage is one of a plurality of groove shape passages of the dissimilar liquid of maintenance, and described groove shape channel parallel is arranged, and described pressure regulator be arranged in parallel.
24. carrier according to claim 22 is characterized in that:
The spring bearing piece is connected with the passage stopper, described spring bearing piece is with the described passage stopper regulating spring that keep-ups pressure, described spring bearing piece has bearing portions, described bearing portions can be used for guiding the axis of guide of carrier to engage in the mode that moves back and forth.
25. carrier according to claim 22 is characterized in that:
Described passage stopper comprises liquid outlet, and described liquid outlet can be directly connected to described jet head liquid.
26. carrier according to claim 24 is characterized in that:
Channel plate and described spring bearing piece are provided with respectively, and wherein said passage stopper comprises liquid outlet, and wherein said channel plate comprises the passage that described liquid outlet can be connected to described jet head liquid.
27. carrier according to claim 24 is characterized in that:
Channel plate and described spring bearing piece are whole to be provided with, and wherein said passage stopper comprises described liquid outlet, and wherein said channel plate comprises the passage that is used for described liquid outlet is connected to described jet head liquid.
28. a liquid injection device comprises:
Be used for keeping the liquid retaining part of liquid temporarily;
Jet head liquid with the nozzle that is used to spray described liquid;
Described liquid is supplied to the feed tube for liquid line of jet head liquid from the liquid retaining part; And
Be arranged on the valve gear in the feed tube for liquid line;
Wherein said valve gear comprises:
The balancing gate pit that is connected to liquid inlet and liquid outlet and keeps described liquid, the liquid in the described balancing gate pit sprays corresponding to the liquid by jet head liquid and reduces, thereby reduces the pressure in the balancing gate pit; And
Fluid pressure in the balancing gate pit is reduced to the pressure regulator of predeterminated level, and the pressure in the described pressure regulator detected pressures chamber also stops selectively or allows and supply to described balancing gate pit from the described liquid of feed tube for liquid line,
Wherein said pressure regulator has pressure bearing spare, when the pressure in the balancing gate pit becomes when being lower than predeterminated level, described pressure bearing spare is in the direction strain in the balancing gate pit, described pressure regulator produces the actuation force of the thrust that produces greater than the strain by pressure bearing spare, described pressure regulator constitutes by described actuation force and opens, when described pressure regulator is opened, allow liquid to supply to the balancing gate pit from the liquid inlet
Described pressure regulator also comprises the force amplificatory structure that is used for described thrust is amplified to described actuation force,
Described force amplificatory structure comprises and being used for by bearing the leverage that thrust produces actuation force,
It is characterized in that:
Described valve gear comprises the passage stopper, and described passage stopper comprises the groove shape passage that is connected to liquid inlet and liquid outlet, and described pressure bearing spare limits described balancing gate pit by seal groove shape passage, and wherein said pressure regulator comprises:
The valve body that between the closing position that is used for the liquid inlet being connected to the enable possition of groove shape passage and is used for liquid inlet and groove shape passage are disconnected, moves; And
By bearing the compressing member that thrust produces actuation force, wherein when bearing thrust, described compressing member is delivered to valve body with actuation force and is used for valve body is moved to the enable possition,
Described compressing member comprises the actuator lever that is arranged in the groove shape passage and plays cantilever action, and described actuator lever has the support end that supports by the passage stopper; And
Described valve body is positioned such that valve body bears actuation force from the part than the actuator lever of the more close support end of center of gravity of actuator lever.
CNB200480004664XA 2003-12-24 2004-12-24 Valve device and method for manufacturing valve device,pressure regulator, carriage, liquid ejecting apparatus Active CN100471677C (en)

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JP2003428222A JP2005186344A (en) 2003-12-24 2003-12-24 Valve gear and liquid jet apparatus
JP428222/2003 2003-12-24
JP431648/2003 2003-12-25
JP003181/2004 2004-01-08
JP003182/2004 2004-01-08
JP168511/2004 2004-06-07

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CN101254709B (en) 2010-06-02
CN101254709A (en) 2008-09-03

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