CN1498773A

CN1498773A - Multishaft directional fault tolerant 2D self-compensating system

Info

Publication number: CN1498773A
Application number: CNA021503591A
Authority: CN
Inventors: 胡文虎
Original assignee: Lite On Technology Corp
Priority date: 2002-11-05
Filing date: 2002-11-05
Publication date: 2004-05-26
Anticipated expiration: 2022-11-05
Also published as: CN1297408C

Abstract

A fault-tolerant multi-axial 2D automatic compensation system for the carrier of ink box used for ink-jet printer or plotter is composed of a carrier unit with gap sensor and skew sensor, a reciprocating unit, and a driver with a rotary unit pivoted with said carrier unit and a lifting unit pivoted with said reciprocating unit and doing slide shift to make the rotation surface of said rotary unit and the lifting straight line of said lifting unit to form a space coordinate system composed of X-Y plane and Z axis. It can regulate the gap between the paper and nozzle to be optimal and automatically compensate the errors of parts, machining and assembling.

Description

Multiaxis is to fault-tolerant two-dimentional self compensating system

Technical field

The present invention relates to a kind of multiaxis to fault-tolerant two-dimentional self compensating system, particularly about a kind of be applied to twin shaft to or multiaxis to the plant of motion, as the nozzle gap adjustment of ink-jet printer, ink-jet multifunctional paper feeding machine or ink jet plotter and the self compensating system of location automatically.

Background technology

Use the principle of axially-movable and adjust parts operation orientation, in the field of realizing facility that material is handled or equipment, export the printer of instrument etc. as main data in the computer interface equipment, the rich colors that wherein ink-jet printer possessed changes and reasonable prices, makes it to become computer standard the most general with in fashion at present and is equipped with.With regard to the technical research of ink-jet printer, the most important thing is to print the quality of China ink, how to print the good effect of texture at printed matters such as paper miscellaneous, factor except ink itself, be when printing, control suitable environment and the condition that prints China ink between black casket carrier and the paper by print system, to give expression to the most real data original appearance.

The black casket carrier of existing ink-jet printer, as shown in Figure 1, comprise a carrier portion 7 and a shift reciprocately portion 8, this carrier portion 7 is fixedly arranged in this shift reciprocately portion 8, this shift reciprocately portion 8 is provided with a bearing block 80, be bearing 82 is locked in shift reciprocately portion 8 admittedly and to slide on an axostylus axostyle (figure slightly) with screw 81, with the reciprocal print job of the nozzle 70 that carries out the ink-jet carrier, black casket carrier below is provided with paper-feed and supporting plate (figure slightly) paper supply in addition and opens to send into to print and use.

The black casket carrier of above-mentioned existing ink-jet printer, gap between its nozzle and the paper, be by an adjusting lever that is arranged at the printer casing, axostylus axostyle to this China ink casket carrier is done mechanical adjustment, be subject to the volume configuration of casing and correlated parts, this adjusting lever only can provide the position, fixed interval (FI) of only a few to adjust, be difficult to satisfy paper sheet thickness miscellaneous, when excesssive gap, can produce the situation that inkjet printing halo of dispersion is dyed, when the gap is too small, can cause the phenomenon of dragging China ink, not only make print quality that the doubt of reduction is arranged, even make paper leave stain, real is a big weakness of ink-jet printer.

Moreover, each part of ink-jet printer during fabrication, have the mould tolerance, make part after dispatching from the factory, all have suitable error amount to exist, also compiled every error after the assembling in the lump, axostylus axostyle as the axostylus axostyle of black casket carrier and paper-feed is not parallel, the right and left axis hole off-centre makes axostylus axostyle crooked, the axis hole of axostylus axostyle and its lining have eccentric error to make axostylus axostyle crooked, scale error between China ink casket and black casket carrier, the angular error of nozzle and black casket etc., this all constitutes when printing, produce the deflection non-continuous event of ink-jet stitching, have a greatly reduced quality for the print quality of ink-jet printer.

As from the foregoing, black casket carrier and its print procedure of above-mentioned existing ink-jet printer on reality is used, obviously have inconvenience and exist with defective, and remain to be improved.

Improving of the above-mentioned defective of inventor's thoughts is that the spy concentrates on studies and cooperates the utilization of scientific principle, proposes a kind of reasonable in design and effectively improve the present invention of above-mentioned defective finally.

Summary of the invention

Main purpose of the present invention is to provide a kind of multiaxis to fault-tolerant two-dimentional self compensating system, makes ink-jet printer when printing the paper of different-thickness, all can keep best ink-jet distance, to avoid dragging black phenomenon, promotes the quality of printing.

Another object of the present invention is to provide a kind of multiaxis to fault-tolerant two-dimentional self compensating system, makes each part error, mismachining tolerance and the assembly error of ink-jet printer obtain compensation and absorb, and to eliminate the discontinuous phenomenon of stitching deflection, promotes the quality of printing.

To achieve these goals, the present invention has mainly provided a kind of multiaxis to fault-tolerant two-dimentional self compensating system, be used for multiaxis to the motion plant move and the operation of recording result in one the prediction subject matter, comprise a carrier portion, an one shift reciprocately portion and a drive unit, wherein this carrier portion is provided with gap sensor and deflection sensors; This shift reciprocately portion is connected to this multiaxis and does shift reciprocately to the plant of motion; And this drive unit comprises a rotation section and a lifting unit, this rotation section and this carrier portion are articulated, this lifting unit and this shift reciprocately portion are articulated and do slide displacement, make plane of rotation and the lifting straight line formation X-Y plane of lifting unit and the spatial coordinate system of Z axle of this rotation section.

The gap sensor of this carrier portion can be measured carrier portion and the distance of predicting subject matter, and compare to the built-in value table of comparisons of the prediction subject matter of fault-tolerant two-dimentional self compensating system with this multiaxis, the one-step activation lifting unit of going forward side by side makes this carrier portion do the lift adjustment of Z axle, and scanning it, the deflection sensors of this carrier portion moves in the initial verification pattern of this prediction subject matter, and compare to the built-in value table of comparisons of the pattern of fault-tolerant two-dimentional self compensating system with this multiaxis, the adjustment of angular displacement is done to drive this carrier portion in the one-step activation rotation section of going forward side by side at X-Y plane along the Z axle.

The invention has the beneficial effects as follows, the setting of the gap sensor of this carrier portion and the lifting unit of this drive unit, make ink-jet printer when printing the paper of different-thickness, the distance of energy measurement delivery nozzle and paper, and adjust up and down, to keep best printing interval, avoid dragging black phenomenon, promote the quality of printing.Simultaneously, the setting of the offset sensor of this carrier portion and the rotation section of this drive unit, make nozzle adjust its error angle via initial verification pattern, make each part error, mismachining tolerance and the assembly error of ink-jet printer obtain compensation and absorb, eliminate the discontinuous phenomenon of stitching deflection, promote the quality of printing.

Description of drawings

Fig. 1 is the floor map of the black casket carrier of existing ink-jet printer;

Fig. 2 is a plane exploded view of the present invention;

Fig. 3 is a flat assembly drawing of the present invention;

Fig. 3 A is the enlarged diagram of A part among Fig. 3 of the present invention;

Fig. 3 B is the enlarged diagram of B part among Fig. 3 of the present invention;

Fig. 4 is the preceding floor map of lifting army's action of the present invention;

Fig. 5 is the floor map that obtains the optimal printing gap after the lifting unit action of the present invention;

Fig. 6 is the floor map that stitching that nozzle of the present invention is printed initial verification pattern reads for deflection sensors scanning;

Fig. 7 is the floor map of rotary driver action post-compensation stitching deviation angle of the present invention;

Fig. 8 is the schematic flow sheet of gap of the present invention adjustment;

Fig. 9 is the schematic flow sheet of skew correction of the present invention.

The specific embodiment

For illustrating further technology, means and the effect that the present invention realizes that predetermined purpose is taked, further illustrate below in conjunction with detailed description of the present invention and accompanying drawing, believe purpose of the present invention, feature and characteristics, can get one thus gos deep into and concrete understanding, yet appended figure is only for reference and explanation, is not to be used for the present invention is limited.

As shown in Figures 2 and 3, the present invention is that a kind of multiaxis is to fault-tolerant two-dimentional self compensating system, its be applied to multiaxis to the motion plant move and the operation of recording result in one the prediction subject matter, this multiaxis is to the plant of motion such as the black casket carrier of ink-jet printer, comprise a carrier portion 1, an one shift reciprocately portion 2 and a drive unit 3, wherein:

Carrier portion 1, playing but black casket 10 installings of machine for ink-jet uses, this carrier portion 1 includes nozzle 11, and nozzle 11 be with black casket 10 for one or with black casket carrier be one, these nozzle 11 peripheries are provided with a gap sensor 12 and a deflection sensors 13, and carrier portion 1 one sides are pivot joint face 14, this pivot joint face about in the of 14 two ends be provided with bulge loop 15, this bulge loop 15 is provided with pivot hole 18, and pivot joint face 14 also is provided with a ratchet part 16; The circuit board (figure slightly) that carrier portion 1 includes signal connecting line 17 and ink-jet printer in addition electrically connects, and transmits for the instruction of ink-jet.

Shift reciprocately portion 2, be connected to this multiaxis and do shift reciprocately to the plant of motion, include bearing 20, belt trip 21 and driving screw hole 22, this bearing 20 is for an axostylus axostyle that is sheathed on this ink-jet printer (figure slightly), make black casket carrier follow this axostylus axostyle and slide, so that this nozzle 11 is carried out reciprocal print job; This belt trip 21 outer absorbing bodies 25 that cover, belt trip 21 are for the fixing usefulness of the belt 23 of ink-jet printer, drive this China ink casket carrier with the motor (figure slightly) by ink-jet printer and move reciprocatingly on this axostylus axostyle; One side of this shift reciprocately portion 2 is provided with dovetail groove 24 and is in a parallel set with this driving screw hole 22.

Drive unit 3, comprise a rotation section 30 and a lifting unit 40, this rotation section 30 comprises a rotary driver 31 and an encoder 32, this rotary driver 31 wherein, as a motor, be to establish with a C type ring 33 rings to be fixed in this rotation section 30, one side of rotary driver 31 is convexly equipped with and connects a gear 34, and its opposite side is convexly equipped with connection one coding disk 35, as shown in Figure 3A, this gear 34 is meshed with the ratchet part 16 of this carrier portion 1, and these coding disk 35 peripheries are placed in the encoder 32 of this rotation section 30, the axle center that this rotation section 30 is provided with pivot 36 and this rotary driver 31 in addition is same arranged in a straight line, and is articulated with the pivot hole 18 of the bulge loop 15 of this carrier portion 1; This lifting unit 40 comprises lifting driver 41 and another encoder 42, this lifting driver 41, as a motor, be to establish with a C type ring 43 rings to be fixed in this lifting unit 40, one side of lifting driver 41 is convexly equipped with and connects a driving screw 44, and its opposite side is convexly equipped with another coding disk 45 of connection, and this driving screw 44 is screwed with the driving screw hole 22 of this shift reciprocately portion 2, and these coding disk 45 peripheries are placed in the encoder 42 of this lifting unit 40; Shown in Fig. 3 B, this lifting unit 40 is provided with dovetail raised line 46 in addition, and this dovetail raised line 46 is placed in the dovetail groove 24 of this shift reciprocately portion 2, this lifting unit 40 and this shift reciprocately portion 2 are articulated and do slide displacement; This drive unit 3 and affixed circuit board 5, this circuit board 5 also connects

signal line

50 and 51 respectively to the feedback signal of this two

encoder

42 and 32 to provide clearance control and angle to control, and circuit board 5 is done with signal connecting line 17 and is electrically connected for transfer instruction to lifting driver 41 and rotary driver 31, an external circuit soft board 52 of while, so that being provided, a metallic contact (figure slightly) does the electrical transfer printing instruction that contacts with the circuit (figure slightly) of carrier portion 1, wherein the metallic contact opposite side of this circuit soft board 52 is provided with a cushion 53, to strengthen its electrical stability in contact.

As shown in Figure 4, the multiaxis of this ink-jet printer China ink casket carrier is provided with a paper feed supporting plate 6 and paper-feed 65 to nozzle 11 sides of fault-tolerant two-dimentional self compensating system, the paper feed direction of this paper feed supporting plate 6 is to become vertical setting with the glide direction of the shift reciprocately portion 2 of this China ink casket carrier, the plane parallel of paper feed supporting plate 6 is positioned at the space detection plane 60 of this gap sensor 12 and deflection sensors 13, the plane of rotation of the gear 34 of the ratchet part 16 of this detection plane 60 and this carrier portion 1 and the rotation section 30 of this drive unit 3 is parallel, the normal direction of detection plane 60 is the direction of the driving screw 44 of this drive unit 3, make the plane of rotation of rotation section 30, it is detection plane 60, form the spatial coordinate system of X-Y plane and Z axle with the lifting straight line of the driving screw 44 of lifting unit 40, wherein the nozzle 11 of this carrier portion 1 is D0 with the initial distance of this paper feed supporting plate 6, and with the optimal printing gap of this detection plane 60 be D1.

Aspect the adjustment of ink-jet gap, schematic flow sheet as Fig. 8, the automatic adjustment of best ink-jet distance, please see Fig. 4 and shown in Figure 5 simultaneously, at a prediction subject matter 61, at this is a paper, when entering paper feed supporting plate 6 and awaiting orders, gap sensor 12 is measured the nozzle 11 of calculating carrier portion 1 and the distance D 2 between the prediction subject matter 61, again itself and this multiaxis is compared in the hope of optimal ink-jet gap adjusted value Δ D to the built-in value table of comparisons of the prediction subject matter of fault-tolerant two-dimentional self compensating system, this table of comparisons is the built-in value of system of being tested arrangement at the thickness of various prediction subject matters 61, this data feedback is done the control of loop circuit according to algorithm, when nozzle 11 and prediction the distance D 2 between the subject matter 61 less than or during greater than optimal printing clearance D 1, the lifting driver 41 of the lifting unit 40 of China ink casket carrier activates to drive this driving screw 44 and rises or descend, the dovetail raised line 46 of drive unit 3 is moved along the dovetail poor 24 of shift reciprocately portion 2, and the nozzle 11 of carrier portion 1 is able to along the Z axle of driving screw 44 do lift adjustment, to reach optimal printing clearance D 1.

Aspect the stitching skew correction, schematic flow sheet as Fig. 9, the automatic adjustment of best ink-jet angle, be when predicting for the first time that subject matter 61 enters the printing of paper feed supporting plate, as shown in Figure 6, prediction subject matter 61 follows paper feed direction 64 and advances, nozzle 11 is done earlier toward the test stitching of journey and is printed action, make prediction subject matter 61 record the result of the action and be printed on initial verification pattern 62, when nozzle 11 is done return mobile again, make deflection sensors 13 scannings of carrier portion 1 read this initial verification pattern 62, and judge whether its stitching has with parallel paper feed direction straight line 63 and accompany error angle θ, again itself and this multiaxis is compared to the built-in value table of comparisons of the pattern of fault-tolerant two-dimentional self compensating system, this table of comparisons is the built-in value of system of being tested arrangement at various printing patterns, this data feedback is done the control of loop circuit according to algorithm, if this error angle θ is greater than zero or less than zero, as shown in Figure 7, the rotary driver 31 of the rotation section 30 of China ink casket carrier activates gear 34 and does clockwise or rotate counterclockwise with the ratchet part 16 that drives this carrier portion 1, and the nozzle 11 of carrier portion 1 is able to do at X-Y plane along the Z axle adjustment of angular displacement, to reach best ink-jet angle, the straight line that nozzle 11 is printed keeps with parallel paper feed direction straight line 63, eliminates stitching skew non-continuous event.

So, to fault-tolerant two-dimentional self compensating system, have characteristics described as follows by multiaxis of the present invention:

(1) setting of the lifting unit of the gap sensor of this carrier portion and this drive unit makes ink-jet printer when printing the paper of different-thickness, the distance of energy measurement delivery nozzle and paper, and adjust up and down, to keep best printing interval, avoid dragging black phenomenon, promote the quality of printing.

(2) setting of the rotation section of the offset sensor of this carrier portion and this drive unit, make nozzle adjust its error angle via initial verification pattern, make each part error, mismachining tolerance and the assembly error of ink-jet printer obtain compensation and absorb, eliminate the discontinuous phenomenon of stitching deflection, promote the quality of printing.

The above, only be the detailed description and the accompanying drawing of specific embodiments of the invention, be not in order to limit practical range of the present invention, those skilled in the art, modify or variation according to the equivalence that spirit of the present invention is done, as the present invention is applied to twin shafts such as ink-jet printer, ink-jet multifunctional paper feeding machine or ink jet plotter to or multiaxis to the motion plant, all should be included in the claim of the present invention.

Claims

1, a kind of multiaxis is to fault-tolerant two-dimentional self compensating system, be used for multiaxis to the plant of motion move and the operation of recording result in a prediction subject matter, it is characterized in that, comprising:

One carrier portion is provided with gap sensor and deflection sensors;

One shift reciprocately portion is connected to this multiaxis and does shift reciprocately to the plant of motion; And

One drive unit, comprise a rotation section and a lifting unit, this rotation section and this carrier portion are articulated, and this lifting unit and this shift reciprocately portion are articulated and do slide displacement, make plane of rotation and the lifting straight line formation X-Y plane of lifting unit and the spatial coordinate system of Z axle of this rotation section;

The gap sensor of this carrier portion is measured carrier portion and the distance of predicting subject matter, and compare to the built-in value table of comparisons of the prediction subject matter of fault-tolerant two-dimentional self compensating system with this multiaxis, further activating lifting unit makes carrier portion do the lift adjustment of Z axle, and scanning it, the deflection sensors of this carrier portion moves in the initial verification pattern of this prediction subject matter, and compare to the built-in value table of comparisons of the pattern of fault-tolerant two-dimentional self compensating system with this multiaxis, further activate the rotation section and do the adjustment of angular displacement at X-Y plane along the Z axle to drive this carrier portion.

2, multiaxis as claimed in claim 1 is characterized in that to fault-tolerant two-dimentional self compensating system, and described multiaxis is an ink-jet printer to the plant of motion, and this carrier portion includes the nozzle of this ink-jet printer.

3, multiaxis as claimed in claim 1 is characterized in that to fault-tolerant two-dimentional self compensating system, and described carrier portion one side is a pivot joint face, and this pivot joint face is provided with bulge loop, and this bulge loop is provided with the pivot hole, and pivot joint face also is provided with a ratchet part.

4, multiaxis as claimed in claim 3 is characterized in that to fault-tolerant two-dimentional self compensating system, and described shift reciprocately portion includes the driving screw hole.

5, multiaxis as claimed in claim 4 is characterized in that to fault-tolerant two-dimentional self compensating system, and a side of described shift reciprocately portion is provided with dovetail groove and be in a parallel set in this driving screw hole.

6, multiaxis as claimed in claim 3 is to fault-tolerant two-dimentional self compensating system, it is characterized in that, the rotation section of described drive unit comprises a rotary driver and an encoder, one side of this rotary driver is convexly equipped with and connects a gear, and its opposite side is convexly equipped with connection one coding disk, this gear is meshed with the ratchet part of this carrier portion, and this coding disk periphery is placed in the encoder of this rotation section.

7, multiaxis as claimed in claim 6 is characterized in that to fault-tolerant two-dimentional self compensating system, and the axle center that described rotation section is provided with pivot and this rotary driver in addition is same arranged in a straight line, and is articulated with the pivot hole of the bulge loop of this carrier portion.

8, multiaxis as claimed in claim 5 is to fault-tolerant two-dimentional self compensating system, it is characterized in that, described lifting unit comprises a lifting driver and an encoder, one side of this lifting driver is convexly equipped with and connects a driving screw, and its opposite side is convexly equipped with connection one coding disk, the driving screw hole of this driving screw and this shift reciprocately portion is screwed, and this coding disk periphery is placed in the encoder of this lifting unit.

9, multiaxis as claimed in claim 8 is characterized in that to fault-tolerant two-dimentional self compensating system, and described lifting unit is provided with the dovetail raised line, and this dovetail raised line is placed in the dovetail groove of this shift reciprocately portion.

10, multiaxis as claimed in claim 6 is to fault-tolerant two-dimentional self compensating system, it is characterized in that, the affixed circuit board of described drive unit, encoder the feedback signal to provide angle control of signal line to this rotation section is provided this circuit board, and a circuit board and a signal connecting line are done and are electrically connected for this multiaxis to the plant transfer instruction of motion to rotary driver, a circuit board and an external circuit soft board, to provide a metallic contact and the circuit of carrier portion to do the electrical transfer instruction that contacts, the metallic contact opposite side of this circuit soft board further is provided with a cushion.

11, multiaxis as claimed in claim 8 is to fault-tolerant two-dimentional self compensating system, it is characterized in that, the affixed circuit board of described drive unit, this circuit board connect signal line to the encoder of this lifting unit so that the feedback signal of clearance control to be provided, and a circuit board and a signal connecting line are done and are electrically connected for this multiaxis to the plant transfer instruction of motion to the lifting driver, a circuit board and an external circuit soft board, to provide a metallic contact and the circuit of carrier portion to do the electrical transfer instruction that contacts, the metallic contact opposite side of this circuit soft board further is provided with a cushion.