CN1166518C - Printer and spring device - Google Patents
Printer and spring device Download PDFInfo
- Publication number
- CN1166518C CN1166518C CNB011121246A CN01112124A CN1166518C CN 1166518 C CN1166518 C CN 1166518C CN B011121246 A CNB011121246 A CN B011121246A CN 01112124 A CN01112124 A CN 01112124A CN 1166518 C CN1166518 C CN 1166518C
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- Prior art keywords
- mentioned
- sleeve
- guide
- axis
- printer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J19/00—Character- or line-spacing mechanisms
- B41J19/04—Sound-deadening or shock-absorbing devices or measures therein
- B41J19/08—Buffers, springs or like carriage stops
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
- B41J13/02—Rollers
- B41J13/025—Special roller holding or lifting means, e.g. for temporarily raising one roller of a pair of nipping rollers for inserting printing material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J19/00—Character- or line-spacing mechanisms
- B41J19/04—Sound-deadening or shock-absorbing devices or measures therein
- B41J19/06—Resilient mounting of mechanism
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J19/00—Character- or line-spacing mechanisms
- B41J19/18—Character-spacing or back-spacing mechanisms; Carriage return or release devices therefor
- B41J19/20—Positive-feed character-spacing mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J19/00—Character- or line-spacing mechanisms
- B41J19/18—Character-spacing or back-spacing mechanisms; Carriage return or release devices therefor
- B41J19/20—Positive-feed character-spacing mechanisms
- B41J19/24—Pawl and ratchet
- B41J19/26—Pawl and ratchet moving a paper or like carriage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/485—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by the process of building-up characters or image elements applicable to two or more kinds of printing or marking processes
- B41J2/505—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by the process of building-up characters or image elements applicable to two or more kinds of printing or marking processes from an assembly of identical printing elements
- B41J2/515—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by the process of building-up characters or image elements applicable to two or more kinds of printing or marking processes from an assembly of identical printing elements line printer type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
Landscapes
- Character Spaces And Line Spaces In Printers (AREA)
Abstract
The present invention relates to a printer wherein a spring device is mounted between the print unit and the secondary member. The spring device is equipped with a first sleeve for externally fitting the spring device to the guide shaft of the printer, a pair of the second sleeves fitted to both ends in the axial direction of the first sleeve in a freely slidable manner and an elastic member of which both ends are held by a pair of the second sleeves and which has elastic force for protruding one ends of the second sleeves toward the lateral direction of both ends in the axial direction of the first sleeve.
Description
Technical field
The present invention relates on one side the print unit that has printhead be moved back and forth in prescribed stroke to the width of record-paper, on one side the printer that on record-paper, prints and the being suitable for spring assembly that printer uses of packing into.
Background technology
As an example of existing printer, have the spy and drive the printer described in the 2000-43360 communique.This printer as shown in Figure 6, is that the driving force by linear motor 91 makes print unit 90 reciprocal free-moving printer on the length direction of the axis of guide 92.But, in this printer, be provided with and make the movable part 91a of linear motor 91 and the reverse balance weight 93 of reciprocating action of print unit 90.This balance weight 93 for example possesses belt mechanism, when movable part 91a to the left of arrow Na move and the bottom of belt 93a to equidirectional when mobile, the top of belt 93a and print unit 90 move to the right-hand of the arrow Nb opposite with above-mentioned direction.According to such formation and since balance the weight of print unit 90 and movable part 91a move, on printer, can not produce big vibration.
In above-mentioned printer, the pair of guide rails portion 94 of print unit 90 and auxiliary part 95 outer being embedded on the axis of guide 92, and spring assembly 8 is set between them.Auxiliary part 95 is oppositely moved back and forth with the speed identical with print unit 90 simultaneously by the driving force of linear motor 91.According to such formation, print unit 90 moves back and forth, and when moving back and forth the terminal in zone near it, between any one party and auxiliary part 95 of pair of guide rails 94, the spring of spring assembly 8 is compressed.Therefore, utilize the resistance of above-mentioned spring that print unit 90 is slowed down.In addition, stopped at print unit 90 also can quickening print unit 90 by the recuperability of above-mentioned spring after the counter-rotating action of terminal of the scope of moving back and forth.Like this,, compare, can reduce the burden of linear motor 91 with the situation that only moves back and forth print unit 90 with the driving force of linear motor 91 if the spring force of spring assembly 8 is used in the acceleration and deceleration of print unit 90.
Open in the 2000-43360 communique above-mentioned spy, the means of noise when reducing rail portion 94 and auxiliary part 95 and collide with spring assembly 8 have proposed spring assembly 8 is configured in the scheme of the central portion between rail portion 94 and the auxiliary part 95.When for example being fixed on the rail portion 94 spring assembly 8, the collision speed of spring assembly 8 and auxiliary part 95 is 2 times of translational speed of print unit 90, relative therewith, can make the collision speed of rail portion 94 or 95 pairs of spring assemblies 8 of auxiliary part identical according to above-mentioned means, can only suppress its part noise with the translational speed of print unit 90.
In the means that above-mentioned communique is recorded and narrated, in order to realize tackling the countermeasure of above-mentioned noise, the structure of spring assembly 8 is for example made structure as shown in Figure 7.That is, spring assembly 8 possesses slidably and to be embedded in a pair of sleeve 80 on the axis of guide 92 and to be clipped in helical spring 81 between this sleeve 80 outward.Otch 82 is set and elastic ring 83 is installed on the interior distolateral minor diameter part 80a of each sleeve 80, this minor diameter part 80a is connected on the outer peripheral face of the axis of guide 92 with suitable defeating.
Yet, the shortcoming below in above-mentioned existing means, having.
Promptly, owing between each sleeve 80 and the axis of guide 92, produce certain frictional force, spring assembly 8 is remained on certain position, but, when this spring assembly 8 is clipped in when being compressed between rail portion 94 and the auxiliary part 95, each sleeve 80 slides with respect to the axis of guide 92, in addition, when compressed spring assembly 8 returned to reset condition, each sleeve 80 also slided.Therefore, in existing printer, each sleeve 80 slides smoothly and must be configured in mutually opposite like this necessary condition on certain position at each sleeve 80 in the time in addition when requiring so-called spring assembly 8 flexible, satisfies such necessary condition and is not easy.Particularly, satisfy above-mentioned necessary condition difficulty more because the frictional force of each sleeve 80 and the axis of guide 92 causes the situations such as wearing and tearing on the surface of the inner peripheral surface of the variation of the power that tightens up of elastic ring 83 and each sleeve 80 and the axis of guide 92 causes when changing.
In existing printer, when the frictional force between the axis of guide 92 and each sleeve 80 is big and hour, spring assembly 8 is for the resistance difference of print unit 90, and the counter-rotating action of print unit 90 has also been brought influence.Printer, according to general rule, print unit 90 carries out the paper feeding of record-paper when reversing action near the terminal of the scope of moving back and forth, and the time in addition prints on record-paper.Therefore, in existing printer, because the counter-rotating of print unit 90 action is different with original predetermined actions, so exist the normal situation of difficult that becomes of printing on record-paper.Have, in existing printer, for example, when the frictional force between the axis of guide 92 and each sleeve 80 was not enough, spring assembly 8 was easily from the central portion deviation post between rail portion 94 and the auxiliary part 95 again.When the skew of such position, because either party of rail portion 94 and auxiliary part 95 be than an end of the first contact spring device 8 of other party, spring assembly 8 is by bullet the opposing party to it.So, spring assembly 8 is rebounded by the opposing party again, carries out multiple collision between rail portion 94 and auxiliary part 95.Multiple collision like this becomes the main cause that produces big noise, must avoid.
Summary of the invention
The present invention is that the back proposes under the circumstances, make the reciprocating action that a kind of print unit is provided not have difference with original predetermined actions, perhaps under the situation of the bad problem that does not produce big noise, the printer of acceleration and deceleration that the elastic force of spring assembly effectively and suitably can be used in print unit is as its problem.In addition, the present invention is providing a kind of suitable spring assembly of such printer of realizing as another problem.
In order to solve above-mentioned problem, in the present invention, following technical scheme has been proposed.
A kind of printer that provides by the 1st technical scheme of the present invention, this printer has print unit, linear motor, balance weight, at least 1 auxiliary part and 2 spring assemblies, above-mentioned print unit has outer 2 rail portion that are embedded on the axis of guide that extends in a certain direction, above-mentioned linear motor has and is used to make this print unit reciprocating reciprocating motion movable part freely on the length direction of the above-mentioned axis of guide, above-mentioned balance weight makes the reciprocating action of the movable part of above-mentioned linear motor and above-mentioned print unit reverse, above-mentioned auxiliary part is embedded on the above-mentioned axis of guide outside between above-mentioned 2 rail portion, and on the length direction of the above-mentioned axis of guide, oppositely move back and forth with above-mentioned print unit, above-mentioned spring assembly is installed on the above-mentioned axis of guide, it is characterized in that, above-mentioned rail portion and above-mentioned auxiliary part each between in above-mentioned 2 spring assemblies 1 is set, above-mentioned each spring assembly is by the 1st sleeve, a pair of the 2nd sleeve and compression helical spring constitute, above-mentioned the 1st sleeve is fixed on the above-mentioned axis of guide by outer embedding crimping, be entrenched on the axial both ends of the 1st sleeve above-mentioned the 2nd sleeve free sliding, above-mentioned compression helical spring, its two ends are clamped by above-mentioned a pair of the 2nd sleeve, and have make above-mentioned each the 2nd sleeve an end to the outstanding elastic force in the side at the axial both ends of above-mentioned the 1st sleeve, be provided with in the axial inner ends portion of above-mentioned each the 2nd sleeve can with the protuberance of tab on the outer peripheral face at the axial both ends that are arranged on above-mentioned the 1st sleeve, the ring flange that combines with above-mentioned compression helical spring is set in the axial outer end portion of above-mentioned each the 2nd sleeve.
In the present invention, move to terminal in front of the terminal of the scope of moving back and forth at above-mentioned print unit, above-mentioned spring assembly is sandwiched between above-mentioned rail portion and the above-mentioned auxiliary part and when being compressed, a pair of the 2nd sleeve of above-mentioned spring assembly slides to the length direction central portion of above-mentioned the 1st sleeve respectively on one side, Yi Bian compress above-mentioned spring member.The resistance of spring member at this moment plays the effect that above-mentioned print unit is slowed down.Next, in of the end counter-rotating of above-mentioned print unit in the scope of moving back and forth, when the interval between above-mentioned rail portion and the above-mentioned auxiliary part enlarges, above-mentioned a pair of the 2nd sleeve is because the effect of the elastic force that the elongation of above-mentioned elastic component produces is slided to the length direction both ends projected direction from the 1st sleeve.At this moment power plays a part as the power that makes above-mentioned rail portion and above-mentioned auxiliary part to their direct of travel acceleration.
Like this, in the present invention, no matter be above-mentioned spring assembly when being compressed, when still returning to original state, can carry out the suitable flexible of above-mentioned elastic component by above-mentioned each the 2nd sleeve is slided with respect to above-mentioned the 1st sleeve.Do not need to move above-mentioned the 1st sleeve.In the present invention, because above-mentioned the 1st sleeve is fixed on the above-mentioned axis of guide, can make above-mentioned spring assembly all be not easy to depart from the position of regulation.Therefore, in the present invention, can be owing to spring assembly departs from the situation that spring assembly repeatedly collides repeatedly that produces from the central portion between above-mentioned rail portion and the above-mentioned auxiliary part between rail portion and auxiliary part.
In addition, in the present invention, between above-mentioned each the 2nd sleeve and the above-mentioned axis of guide, do not need to produce the frictional force that is used for fixing above-mentioned spring assembly integral body.Therefore, do not need strictly to stipulate the next frictional force that between these the 2nd sleeves and the axis of guide, produces regulation of these chimeric sizes yet.Manufacture just easier like this.
Have again, in the present invention, except can on above-mentioned each the 2nd sleeve and the above-mentioned axis of guide, not producing wearing and tearing, also can not produce the above-mentioned respectively big change of the aspects such as resistance of the 2nd sleeve when above-mentioned print unit slows down that the factors such as variation by the surface state of the above-mentioned axis of guide cause.Therefore, also can make the counter-rotating action of above-mentioned print unit stable, can make the print processing action of printer become suitable processing action.
In desirable embodiment of the present invention, above-mentioned spring assembly is installed on the above-mentioned auxiliary part and the central portion between the above-mentioned rail portion on the axis of guide so that above-mentioned auxiliary part with can roughly side by side contact each the 2nd sleeve of facing with them with the rail portion of the above-mentioned print unit of its opposite position phase shift.
In desirable embodiment of the present invention, the rail portion that is embedded in outward on the above-mentioned axis of guide is 2, above-mentioned 2 auxiliary parts are embedded on the above-mentioned axis of guide outside all between above-mentioned 2 rail portion, above-mentioned rail portion and above-mentioned auxiliary part each between above-mentioned spring assembly is installed.
In desirable embodiment of the present invention, above-mentioned elastic component is the outer helical spring that is embedded on above-mentioned the 2nd sleeve.
In desirable embodiment of the present invention, above-mentioned the 1st sleeve is made has the elastic force that tightens up above-mentioned axis of guide periphery.
According to such formation, can stably be fixed on above-mentioned the 1st sleeve on the above-mentioned axis of guide.In addition, in the time of necessary, also can force to move above-mentioned the 1st sleeve, on the position of the convenient regulation that spring assembly is positioned at the above-mentioned axis of guide at the length direction of the above-mentioned axis of guide.
In another desirable embodiment of the present invention, above-mentioned the 1st sleeve is the sleeve that cross section with axially extended notch part is C word shape substantially, and under the nature that separates from the above-mentioned axis of guide, it is littler than the external diameter of the above-mentioned axis of guide to make internal diameter.
According to such formation, when above-mentioned the 1st sleeve is made simple structure, can tighten up the periphery of the above-mentioned axis of guide with the elastic force of appropriateness.
In another desirable embodiment of the present invention, above-mentioned spring assembly also comprises above-mentioned the 1st sleeve is fixed on hold-down screw on the above-mentioned axis of guide.
In another desirable embodiment of the present invention, above-mentioned spring assembly also comprises the outer elastic ring that is embedded on above-mentioned the 1st sleeve, by the elastic force of above-mentioned elastic ring above-mentioned the 1st sleeve is crimped on the above-mentioned axis of guide.
In another desirable embodiment of the present invention, on above-mentioned the 1st sleeve and above-mentioned each the 2nd sleeve, the combining mechanism that can mutually combine is set, be used for stoping above-mentioned the 2nd sleeve from more than the outstanding given size of above-mentioned the 1st sleeve.
According to such formation, above-mentioned the 2nd sleeve can not come off from above-mentioned the 1st sleeve inadequately.
In another desirable embodiment of the present invention, be provided with on the part of in above-mentioned the 2nd sleeve and rail portion subtend above-mentioned auxiliary part or above-mentioned print unit than above-mentioned each little bolster of the 2nd sleeve spring rate.At this, so-called " spring rate " is the value of stress divided by deflection, and this value is more little, and be big more with respect to certain loading distortion.
According to such formation, the impact in the time of can reducing the collision of above-mentioned spring assembly and above-mentioned auxiliary part or above-mentioned rail portion can realize the protection at each position and suppress noise.
The spring assembly that provides by the 2nd technical scheme of the present invention, it is characterized in that this spring assembly has and outer is embedded in the 1st sleeve on the desirable axle, is entrenched in a end that a pair of the 2nd sleeve on the axial both ends of above-mentioned the 1st sleeve and two ends make above-mentioned each the 2nd sleeve by having of clamping of above-mentioned a pair of the 2nd sleeve elastic component to the elastic force of the side at the axial both ends of above-mentioned the 1st sleeve protrusion free sliding.
According to the spring assembly of such formation, useful to realizing printer of the present invention, can play with in the identical effect described in the printer that is provided by the 1st technical scheme of the present invention.
Other feature and advantage of the present invention can be more clear from the explanation of following inventive embodiment.
Description of drawings
Fig. 1 is the outline elevation of an example of expression printer of the present invention.
Fig. 2 is the summary side elevation of the represented printer of Fig. 1.
Fig. 3 is mounted in the cutaway view of the spring assembly on the printer shown in Figure 1.
Fig. 4 is the IV-IV profile of Fig. 3.
Fig. 5 is the cutaway view of the compressive state of expression spring assembly.
Fig. 6 is the front view of an example of expression existing printer.
Fig. 7 is the cutaway view of an example of existing spring assembly.
The specific embodiment
Below, specifically describe desirable embodiment of the present invention with reference to accompanying drawing.
Fig. 1 and Fig. 2 represent an example of printer of the present invention.Fig. 3～Fig. 5 represents to be installed in the spring assembly on the printer illustrated in figures 1 and 2.
As shown in Figure 1, the printer P of present embodiment constitutes as the click type printer, removes outside the spring assembly A that is installed on this printer P, and basic formation is roughly the same with printer described in the prior art.Concretely, this printer P is made of print unit 1, balance weight 2, linear motor 3, a pair of auxiliary part 4 and a pair of spring assembly A.
Print unit 1 is the unit that is commonly referred to as the hammer bank, as shown in Figure 2, has the printhead 10 as the click type of printing hammer of right quantity.Platen 70 is set, feeding recordable paper K between them in the place of facing with printhead 10.As shown in Figure 1, on the both ends of the length direction of this print unit 1 pair of guide rails portion 11 is set, these rail portion 11 are outer slidably to be embedded on the axis of guide 6 that horizontal direction extends.
A pair of auxiliary part 4, outer slidably being embedded on the axis of guide 6, and make it between the pair of guide rails portion 11 of print unit 1.Spring assembly A is installed on the axis of guide 6, and makes it between each auxiliary part 4 and each rail portion 11.
Linear motor 3, for example the movable part 30 by a plurality of solenoids (diagram slightly) constitutes with the stator 31 that has a plurality of magnet (permanent magnet), by in the magnetic field of magnet, in solenoid, flowing through electric current, come bright Left Hand Rule on movable part 30, can produce thrust according to Buddhist.Movable part 30 freely moves back and forth with certain stroke.Have, different with present embodiment, also can make movable part 30 has magnet again, and stator 31 has solenoid.
The balance weight of balance weight 2 and above-mentioned prior art is the same belt mechanism.This belt mechanism be on a pair of belt pulley 20a, 20b around the mechanism of hanging belt 21, the bottom of belt 21, movable part 30 and a pair of auxiliary part 4 by connecting elements 22 and linear motor 3 link (rigidity binding).The top of belt 21 links by coupling member 23 and print unit 1.Therefore, when moving back and forth on the left and right directions of movable part 30 at Fig. 1, also equidirectional with it equivalent of a pair of auxiliary part 4 moves.In contrast, the reciprocating action of print unit 1 and movable part 30 or each auxiliary part 4 antiphases are promptly moved to the direction opposite with movable part 30 or each auxiliary part 4.
Each spring assembly A, as shown in Figure 3, by the 1st sleeve 51, the 2nd a pair of sleeve 52 and constitute as the spring 53 of elastic component.
The 1st sleeve 51 usefulness have flexual synthetic resin to be made, and as shown in Figure 4, is the sleeve that cross section with notch part 51a is C word shape substantially.Notch part 51a becomes the axial length range setting along the 1st sleeve 51.Therefore, the 1st sleeve 51 becomes to enlarge on radial direction and dwindles Free Transform.The 1st sleeve 51 shown in the chain-dotted line of Fig. 4, is embedded in outside not under the nature on the axis of guide 6, and its inside diameter D 2 is littler than the outer diameter D 1 of the axis of guide 6.The 1st sleeve 51 is embedded on the axis of guide 6 outside under the state that the above-mentioned nature of its radius ratio is enlarged.
Each the 2nd sleeve 52 is to use with the synthetic resin of the 1st sleeve 51 identical or different kinds to make, outer slidably being embedded on the axial both ends of the 1st sleeve 51.Opposite with the axis of guide 6 with the 1st sleeve 51, the 2nd the chimeric of sleeve 52 relatively relaxed.Therefore, it doesn't matter for the factors such as variation of the frictional force that produces between the axis of guide 6 and the 1st sleeve 51 and the surface state of the axis of guide 6, becomes big than the frictional force that produces between the frictional force that produces between the axis of guide 6 and the 2nd sleeve and the 1st sleeve 51 and the 2nd sleeve 52.
On the axial inner end of each the 2nd sleeve 52 (near the ends of the axial central authorities of the 1st sleeve 51), the protuberance 52b that can combine with the protuberance 51b on the outer peripheral face at the axial both ends that are arranged on the 1st sleeve 51 is set.These protuberances 51b, 52b are equivalent to an example of said combining mechanism in the present invention.In the axial outer end portion of each the 2nd sleeve 52, ring flange 52a is set, the bolster 54 of (for example chemglaze system) sheet littler than the 2nd sleeve 52 spring rates is set on the face outwardly of this ring flange 52a.
Below, the effect of the printer P of above-mentioned formation is described.
When start printer P, in advance each spring assembly A is configured on each rail portion 11 and the central portion between each auxiliary part 4 of print unit 1.The 1st sleeve 51 of each spring assembly A tightens up under the state of the axis of guide 6 though be in certain elastic force, when adding bigger power, is to slide on the length direction of the axis of guide 6, therefore, can carry out the location of spring assembly A simply.
Be driven at linear motor 3, for example when Fig. 1 right-hand mobile, the rail portion 11 of the left end of print unit 1 and the auxiliary part 4 corresponding with it are approaching mutually for print unit 1.Therefore, on the both ends of the spring assembly A between them, these rail portion 11 contact with auxiliary part 4, and spring assembly A is by the arrow N from its two side direction Fig. 3
1The direction pushing.So, while each the 2nd sleeve 52 of spring assembly A compresses the central portion direction slip of spring 53 to the length direction of the 1st sleeve 51.The resistance of spring 53 at this moment becomes the auxiliary force that print unit 1 is slowed down, and has alleviated near the burden of linear motor 3 when print unit 1 slows down terminal.When rail portion 11 contacts with spring assembly A with auxiliary part 4, because they contact with the bolster 54 littler than each the 2nd sleeve 52 spring rate, so the impact can reduce to contact the time can suppress the generation of noise.When the terminal of the right side of print unit 1 arrival reciprocating motion scope, spring assembly A becomes state shown in Figure 5.
Secondly, when print unit 1 counter-rotating, rail portion 11 and auxiliary part 4 move to the direction of leaving mutually (direction of the arrow N2 of Fig. 5).At this moment a pair of the 2nd sleeve 52 slides under the effect of the elastic force F of spring 53, and is outstanding to the side at the length direction both ends of the 1st sleeve 51, to their direction of advance pushing rail portion 11 and auxiliary part 4.This pushing force becomes the auxiliary force of quickening print unit 1, has alleviated from being inverted to the burden of the linear motor 3 when quickening print unit 1.When the distance between rail portion 11 and the auxiliary part 4 became big, spring assembly A returned to original state shown in Figure 3.When print unit 1 moves and reverses to the left of Fig. 1, among the spring assembly A between the rail portion 11 of the right-hand member that is clipped in print unit 1 and the auxiliary part 4 corresponding, obtain effect same as described above with it.
In the compressed action and recurrence action of above-mentioned spring assembly A, each the 2nd sleeve 52 limit is slided relative the 1st sleeve 51 in spring 53 flexible limits.In contrast, the 1st sleeve 51 does not move.Therefore, the central portion between rail portion 11 and the auxiliary part 4 is not departed from the position of spring assembly A.As spring assembly A during from the position deviation of above-mentioned central portion, either party of rail portion 11 and auxiliary part 4 collides prior to the end of other party and spring assembly A and spring assembly A pushed to the other party side, can produce spring assembly and all on the axis of guide 6, move back and forth phenomenon astatically, but can prevent that in the present embodiment such thing from taking place.
Each the 2nd sleeve 52 owing to be entrenched on the axis of guide 6 and the 1st sleeve 51 respectively, is difficult to produce wearing and tearing with relaxing on these parts.In addition, if the axis of guide 6 has produced wearing and tearing and produced some variations on its surface state, perhaps because how many changes of the diameter of the temperature rising axis of guide 6 are big, even produced these situations, also can make each the 2nd sleeve 52 on the length direction of the axis of guide 6, not produce big change on the frictional force when mobile.Therefore, resistance of spring assembly A each the 2nd sleeve 52 during by 4 compressions of rail portion 11 and auxiliary part and the spring assembly A power of each the 2nd sleeve pushing rail portion 11 and auxiliary part 4 when compressive state returns to non-compressed state is necessarily changed respectively, and the reciprocating action that comprises the acceleration and deceleration of print unit 1 becomes very stable all.So, because the stabilisation of the reciprocating action of such print unit 1 has also just reached correctization of printing on record-paper.
The concrete formation of the each several part of printer of the present invention and spring assembly is not limited to the foregoing description, can carry out various changes in the design.
For the 1st sleeve of spring assembly, for example also can replace the 1st sleeve itself to have the formation of elastic force by embedding elastic ring outside on the 1st sleeve, utilize the elastic force of this elastic ring that the 1st sleeve is crimped on the axis of guide.In addition, also can make tubular to the 1st sleeve, be entrenched on the axis of guide with relaxing, with ways such as limit screws the 1st sleeve is fixed on the position of axis of guide regulation then.
As the spring member that possesses on the spring assembly, can replace metal compression helical spring with various elastic components, do not limit its concrete kind yet.
The print unit of printer of the present invention is not limited to the print unit of the printhead that has the click type, for example also can make the print unit of the printhead that has thermosensitive type or inkjet type.Balance weight so long as it is just passable to have the reverse function of the reciprocating action of the movable part that can make linear motor and print unit, need not let it be specifically constitutes.Printer of the present invention also can be as the printer shown in Figure 6 of prior art, at the pars intermedia of pair of guide rails portion an auxiliary part is set, and does not also limit the concrete quantity of rail portion and auxiliary part.
From above explanation, be appreciated that, according to printer of the present invention, the reciprocating action of print unit can be not different with original predetermined actions, spring assembly can not produce big noise owing to repeatedly colliding repeatedly, can be effectively when the print unit acceleration and deceleration and suitably utilize the spring force of spring assembly.In addition, spring assembly of the present invention can be of value to and realize printer of the present invention.
Claims (10)
1. printer, this printer has print unit, linear motor, balance weight, at least 1 auxiliary part and 2 spring assemblies, above-mentioned print unit has outer 2 rail portion that are embedded on the axis of guide that extends in a certain direction, above-mentioned linear motor has and is used to make this print unit reciprocating reciprocating motion movable part freely on the length direction of the above-mentioned axis of guide, above-mentioned balance weight makes the reciprocating action of the movable part of above-mentioned linear motor and above-mentioned print unit reverse, above-mentioned auxiliary part is embedded on the above-mentioned axis of guide outside between above-mentioned 2 rail portion, and on the length direction of the above-mentioned axis of guide, oppositely move back and forth with above-mentioned print unit, above-mentioned spring assembly is installed on the above-mentioned axis of guide, it is characterized in that, above-mentioned rail portion and above-mentioned auxiliary part each between in above-mentioned 2 spring assemblies 1 is set, above-mentioned each spring assembly is by the 1st sleeve, a pair of the 2nd sleeve and compression helical spring constitute, above-mentioned the 1st sleeve is fixed on the above-mentioned axis of guide by outer embedding crimping, be entrenched on the axial both ends of the 1st sleeve above-mentioned the 2nd sleeve free sliding, above-mentioned compression helical spring, its two ends are clamped by above-mentioned a pair of the 2nd sleeve, and have make above-mentioned each the 2nd sleeve an end to the outstanding elastic force in the side at the axial both ends of above-mentioned the 1st sleeve
Be provided with in the axial inner ends portion of above-mentioned each the 2nd sleeve can with the protuberance of tab on the outer peripheral face at the axial both ends that are arranged on above-mentioned the 1st sleeve, the ring flange that combines with above-mentioned compression helical spring is set in the axial outer end portion of above-mentioned each the 2nd sleeve.
2. printer as claimed in claim 1, it is characterized in that, above-mentioned spring assembly is installed on the above-mentioned auxiliary part and the central portion between the above-mentioned rail portion on the axis of guide, is equipped with the 2nd sleeve so that above-mentioned auxiliary part and rail portion with its above-mentioned print unit that oppositely moves can substantially side by side contact with they are faced.
3. printer as claimed in claim 1 is characterized in that, between above-mentioned 2 rail portion, above-mentioned auxiliary part on the above-mentioned axis of guide outside 2 of embeddings.
4. printer as claimed in claim 1 is characterized in that, above-mentioned the 1st sleeve is the structure with elastic force of the periphery that tightens up the above-mentioned axis of guide.
5. printer as claimed in claim 4, it is characterized in that above-mentioned the 1st sleeve is to have the part that roughly is the C font to the cross section of axially extended notch part, simultaneously, under the nature of taking off from the above-mentioned axis of guide, its internal diameter is littler than the external diameter of the above-mentioned axis of guide.
6. printer as claimed in claim 1 is characterized in that, above-mentioned spring assembly also comprises above-mentioned the 1st sleeve is fixed on trip bolt on the above-mentioned axis of guide.
7. printer as claimed in claim 1 is characterized in that, above-mentioned spring assembly also comprises the outer elastic ring that is embedded on above-mentioned the 1st sleeve, by the elastic force of above-mentioned elastic ring above-mentioned the 1st sleeve is crimped on the above-mentioned axis of guide.
8. printer as claimed in claim 1 is characterized in that, is provided with than above-mentioned each little bolster of the 2nd sleeve spring rate on above-mentioned each the 2nd sleeve and relative part above-mentioned rail portion.
9. printer as claimed in claim 8 is characterized in that, is provided with on the part relative with above-mentioned auxiliary part of above-mentioned each the 2nd sleeve than above-mentioned each little bolster of the 2nd sleeve spring rate.
10. spring assembly, it is characterized in that having by outer embedding crimping and be fixed on the 1st sleeve on the desirable axle, be entrenched in the compression helical spring of the elastic force of a end that a pair of the 2nd sleeve on the axial both ends of above-mentioned the 1st sleeve and two ends make above-mentioned each the 2nd sleeve by having of clamping of above-mentioned a pair of the 2nd sleeve giving prominence to the side at the axial both ends of above-mentioned the 1st sleeve free sliding;
Be provided with in the axial inner ends portion of above-mentioned each the 2nd sleeve can with the protuberance of tab on the outer peripheral face at the axial both ends that are arranged on above-mentioned the 1st sleeve, the ring flange that combines with above-mentioned compression helical spring is set in the axial outer end portion of above-mentioned each the 2nd sleeve.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP342025/2000 | 2000-11-09 | ||
| JP2000342025A JP3825244B2 (en) | 2000-11-09 | 2000-11-09 | Printer and spring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1353046A CN1353046A (en) | 2002-06-12 |
| CN1166518C true CN1166518C (en) | 2004-09-15 |
Family
ID=18816658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011121246A Expired - Lifetime CN1166518C (en) | 2000-11-09 | 2001-03-29 | Printer and spring device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3825244B2 (en) |
| KR (1) | KR100734453B1 (en) |
| CN (1) | CN1166518C (en) |
| TW (1) | TW515756B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4169214B2 (en) | 2003-06-26 | 2008-10-22 | ボッシュ株式会社 | Unitized spring device and master cylinder including the same |
| CN104527235B (en) * | 2014-12-31 | 2017-10-10 | 深圳市润天智数字设备股份有限公司 | A kind of ink-jet printer |
| CN108481921A (en) * | 2018-04-17 | 2018-09-04 | 深圳市润天智数字设备股份有限公司 | Anticollision ink-jet trolley and printer |
| CN112953153B (en) * | 2021-05-13 | 2021-09-03 | 潍坊万隆电气股份有限公司 | Self-balancing reciprocating motor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6024981A (en) * | 1983-07-21 | 1985-02-07 | Canon Inc | Printer |
| JP2000043360A (en) * | 1998-07-29 | 2000-02-15 | Hitachi Koki Co Ltd | Printer |
-
2000
- 2000-11-09 JP JP2000342025A patent/JP3825244B2/en not_active Expired - Fee Related
-
2001
- 2001-03-29 CN CNB011121246A patent/CN1166518C/en not_active Expired - Lifetime
- 2001-03-30 TW TW090107740A patent/TW515756B/en not_active IP Right Cessation
- 2001-03-30 KR KR1020010016740A patent/KR100734453B1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| JP3825244B2 (en) | 2006-09-27 |
| JP2002144660A (en) | 2002-05-22 |
| KR20020036649A (en) | 2002-05-16 |
| KR100734453B1 (en) | 2007-07-03 |
| CN1353046A (en) | 2002-06-12 |
| TW515756B (en) | 2003-01-01 |
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| ASS | Succession or assignment of patent right |
Owner name: FUJI XEROX CO., LTD. Free format text: FORMER OWNER: FUJITSU LIMITED Effective date: 20030625 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20030625 Address after: Tokyo, Japan, Japan Applicant after: Fuji Xerox Corp. Address before: Kanagawa, Japan Applicant before: Fujitsu Ltd. |
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