CN102211469A - Transportation device - Google Patents
Transportation device Download PDFInfo
- Publication number
- CN102211469A CN102211469A CN2010106230494A CN201010623049A CN102211469A CN 102211469 A CN102211469 A CN 102211469A CN 2010106230494 A CN2010106230494 A CN 2010106230494A CN 201010623049 A CN201010623049 A CN 201010623049A CN 102211469 A CN102211469 A CN 102211469A
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- China
- Prior art keywords
- arm
- paper
- roller
- rotation section
- turned round
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/02—Separating articles from piles using friction forces between articles and separator
- B65H3/06—Rollers or like rotary separators
- B65H3/0661—Rollers or like rotary separators for separating inclined-stacked articles with separator rollers above the stack
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2402/00—Constructional details of the handling apparatus
- B65H2402/30—Supports; Subassemblies; Mountings thereof
- B65H2402/31—Pivoting support means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2402/00—Constructional details of the handling apparatus
- B65H2402/50—Machine elements
- B65H2402/54—Springs, e.g. helical or leaf springs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
- B65H2515/30—Forces; Stresses
- B65H2515/34—Pressure, e.g. fluid pressure
Abstract
The invention provides a transportation device, capable of preventing the double feeding of the transported media. The transportation device includes a pick-up unit having a first arm that is rotatable about a first rotation section, a second arm that is rotatable about a second rotation section with respect to the first arm and is provided with a feeding roller fixed thereon, and a torsion coil spring that acts on the second rotation section so as to bias the feeding roller toward the paper sheets. The first arm has a first fixation section that fixes in place one end of the torsion coil spring, while the second arm has a second fixation section that fixes in place the other end of the torsion coil spring. A plurality of spring latches is disposed on at least one of the first fixation section and second fixation section so as to adjust a spring force of the torsion coil spring.
Description
Technical field
The present invention for example relates to the conveying device that is used for ink-jet printer etc.
Background technology
In the past, be provided with in the printer and be used for separating the conveying device of sending one by one with the paper bundle on the loading tray of paper (being transferred medium) from mounting in printer.In this kind conveying device, use paper in order to make, by keeping and send roll-in to be connected to the state (for example, with reference to patent documentation 1) of using paper to sending roller to using the paper application of force with giving to sending roller to send reliably.
With reference to Figure 10 the structure of existing conveying device is described.
Be provided with in the conveying device 100: be used for mounting with the loading tray 110 of paper Q, send roller 120 with paper Q to giving of carrying of the record portion of printer in loading tray 110 mounting.Should give and send roller 120 to be installed in via arm 130 on the driving shaft 140 as driving shaft.The rotation of this driving shaft 140 is delivered to sending roller 120 via not shown gear row, gives thus and send roller 120 rotations.In addition, conveying device 100 is equipped with is turned round helical spring 150, this turned round helical spring 150 with arm 130 towards with paper Q, be about to the counter clockwise direction application of force of arm 130 in figure.Thus, will be to sending roller 120 towards using paper Q crimping.In addition, by making to sending roller 120 along the rotation of the clockwise directions shown in the hollow arrow among the figure, with paper Q by sending shown in the arrow of ruling along single-point with the paper throughput direction.
In this kind conveying device 100, utilize the power of bestowing of being turned round helical spring 150, it is that rotate towards loading tray 110 at the center that arm 130 reaches to the minimizing of sending roller 120 along with the sheet number of using paper Q and with driving shaft 140.Thus, keep to send roller 120 according to the sheet number of paper Q to crimping with paper Q with the uppermost position in fig-ure of paper bundle.
Patent documentation 1: the spy opens the 2003-285936 communique
Yet, turned round helical spring 150 because its spring 150 self product uneven or the alignment error of installing to conveying device 100 etc., it is bestowed power and produces uneven with respect to the predefined power of bestowing.Thereby, give and send roller 120 to produce uneven to crimp force with paper Q crimping.Its result send roller 120 when the crimp force of using paper Q crimping is excessive when giving, and produces folded the sending (overlapping conveying) with paper Q.
Summary of the invention
The present invention puts in view of the above problems and proposes, and its purpose is to provide a kind of folded conveying device of sending that can suppress to be transferred medium.
In order to achieve the above object, the invention provides a kind of conveying device, it is characterized in that possessing: delivery device body, it utilizes to sending roller to carry and is transferred medium; The first arm, it is installed on described delivery device body, and can be that rotate with respect to described delivery device body at the center with first rotation section; Second arm, it is installed on described the first arm, and can be that rotate with respect to described the first arm at the center with second rotation section, and is fixed with described give and send roller becoming a side opposite with described first rotation section with respect to described second rotation section; Turned round helical spring, it is to be sent roller to act on described second rotation section towards the described mode that is transferred the medium application of force with described, on described the first arm, be provided with first fixed part, the fixing described helical spring end of being turned round of this first fixed part, on described second arm, be provided with second fixed part, the fixing described helical spring the other end of being turned round of this second fixed part, described first fixed part and described second fixed part one of at least on be provided with a plurality of spring hook portion, this spring hook portion is used to adjust the described helical spring spring force of being turned round.
According to this structure, can adjust by spring hook portion and be turned round helical spring spring force, therefore can suppress to be turned round spring force uneven of helical spring self or the inequality of being turned round helical spring spring force that causes by alignment error etc.Suppress thus to be sent roller to become excessive, therefore can suppress to be transferred the folded of medium and send to the crimp force that is transferred the medium crimping.
In conveying device of the present invention, described turned round helical spring according to described second arm with respect to the rotation of described the first arm and strain, the described thus helical spring of being turned round is sent roller towards the described medium application of force that is transferred with described.
Under the situation that second arm rotates with respect to the first arm, by being turned round the helical spring strain, being turned round helical spring will be to sending roller towards being transferred the medium application of force, therefore not rotating with respect to the first arm with second arm and make the first arm is that the situation that rotate at the center is compared with first rotation section with second arm integratedly, gives and send roller to become big to being transferred the power that medium applies.
In this kind structure, insert when sending between roller and the mounting surface when being transferred medium, utilize to be transferred medium and to push to the power of sending roller, the first arm and second arm are that rotate integratedly at the center with first rotation section.Thus, inhibition will be to sending roller to the increase that is transferred the power that medium applies, and therefore suppresses to give the increase of sending roll-in to connect to be transferred the power of medium.Thus, can easily will be transferred the medium mounting in conveying device.
In conveying device of the present invention, sent the opposed position of roller to be provided with the described mounting surface that is transferred medium of mounting in this conveying device with described give, be provided with cover in described first rotation section with the described opposed position of medium that is transferred, this cover is from described first rotation section of rotation outer side covers radially of described first rotation section, and the described mounting sheet number that is transferred medium is limited in the gap that utilizes described mounting surface and described cover to constitute.
When second rotation section is provided with the mechanism that limits the mounting sheet number that is transferred medium, be transferred under the situation of medium to sending roller to carry, second rotation section is followed the rotation of the first arm and second arm and is that rotate at the center with first rotation section, and therefore, second rotation section is with respect to the change in location of mounting surface.Its result, restriction is transferred the change in location of the mounting sheet number of medium.Thus, can not clearly limit be transferred medium in fact can mounting to which kind of degree.
About this point, in the present invention, because cover from rotation outer side covers first rotation section radially of first rotation section, therefore, when rotating in first rotation section, covers the invariant positionization with respect to mounting surface.Therefore, send roller to carry the situation that is transferred medium for giving, the position of mounting surface and cover can not change.Thus, can clearly limit the mounting sheet number that is transferred medium.
In conveying device of the present invention, described cover is arranged on described the first arm along with carrying the described described scope of sending the action of roller and rotating of giving that is transferred medium.
According to this structure, in the scope that the first arm rotates, be provided with cover, therefore can suppress to be transferred medium break away from from the gap between mounting surface and the cover midway in the rotation of the first arm.
In conveying device of the present invention, the described helical spring of being turned round begins and the arm that is provided with one of at least linearity of coiling latter end at the coiling of the spire of reeling, a plurality of described spring hook portion is made of a plurality of ribs, described arm is installed on described rib, regulates the described helical spring spring force of being turned round by changing the rib that described arm is installed.
According to this structure, the operator regulates when being turned round helical spring spring force, only by just adjusting being installed on other rib after rib unloads lower arm part again.Thus, the operator can easily regulate the operation of being turned round helical spring spring force.
Description of drawings
Fig. 1 is the approximate three-dimensional map of the printer of embodiment.
Fig. 2 is the approximate three-dimensional map of the conveying device of embodiment.
Fig. 3 is the exploded perspective view of picking up the unit of embodiment.
Fig. 4 is the schematic diagram that the gear row of unit are picked up in expression.
Fig. 5 is the stereogram that the positive surface construction of unit is picked up in expression.
Fig. 6 (a) is the side view of the conveying device of expression holding state, and Fig. 6 (b) is the schematic diagram of the conveying device of presentation graphs 6 (a).
Fig. 7 (a) is the side view of the conveying device of state before expression will be carried, and Fig. 7 (b) is the schematic diagram of the conveying device of presentation graphs 7 (a).
Fig. 8 (a) is the side view of expression with the conveying device of paper feed status, and Fig. 8 (b) is the schematic diagram of the conveying device of presentation graphs 8 (a).
Fig. 9 (a) is the side view of the conveying device of state before expression will carry when having used ground paper, and Fig. 9 (b) is the schematic diagram of the conveying device of presentation graphs 9 (a).
Figure 10 is the schematic diagram of the existing conveying device of expression.
Symbol description
11... printer, 12... conveying device, 21a... mounting surface, 23... bolster (delivery device body), 26... release liner (separating mechanism), 31... the first arm, 32... second arm, send roller 33... give, 35... turned round helical spring, first holding section 35b... (arm), 42... top cover portion (cover), 42c... slot part (the 1st fixed part), 61... first rotation section, 62... second rotation section, 70... spring fixed part (second fixed part), 71... first adjusting portion (spring hook portion), 72... second adjusting portion (spring hook portion), 73... the 3rd adjusting portion (spring hook portion), 74... the 4th adjusting portion (spring hook portion), 75... the 5th adjusting portion (spring hook portion), 76... rib, P, P1, P2, P3... is with paper (being transferred medium).
The specific embodiment
Below, with reference to Fig. 1～Fig. 9, to the specific embodiment of conveying device of the present invention as the employed conveying device of ink-jet printer (hereinafter referred to as " printer ") described.In addition, in the following description, short of special explanation, the situation of using " fore-and-aft direction ", " above-below direction " to reach " left and right directions " refers to that " fore-and-aft direction " shown in the arrow, " above-below direction " reach " left and right directions " among Fig. 1.In addition, in the present embodiment, above-below direction is defined as the direction identical with vertical direction.
As shown in Figure 1, printer 11 be supply with as side from behind be transferred medium with paper on the tape deck of shorthand or image etc.This printer 11 possesses: carry automatic sheet material conveyor (ASF:Auto Sheet Feeder) with paper be conveying device 12, carry by conveying device 12 with paper on document image etc. tape deck 13, discharge the ejection port 14 that has write down the usefulness paper of image etc. by tape deck 13.
As shown in Figure 2, conveying device 12 is provided with and is used for the loading tray 21 of mounting with paper.This loading tray 21 has: mounting is bearing-surface 21b with the skewed mounting surface 21a of paper, along the plane of fore-and-aft direction and left and right directions.Right-hand member at loading tray 21 is provided with guiding wall 22, and this guiding wall 22 is fixed in this loading tray 21 and uses the location of paper.Bolster 23 as delivery device body is installed on the guiding wall 22, and this bolster 23 extends towards left from this guiding wall 22, and is connected with not shown electro-motor via the gear row.Have and to pick up unit 24 with paper towards what tape deck 13 (with reference to Fig. 1) was carried at these bolster 23 upper supports.
In addition, on mounting surface 21a, be provided with and roller 25 (with reference to Fig. 6) with the paper butt, and with paper and this mounting surface 21a butt.Bearing-surface 21b is provided with the release liner 26 as separating mechanism, and this release liner 26 is used for separating one by one uses paper.Casing 26a that release liner 26 is provided with the rectangular box shape that is installed on bearing-surface 21b and the 26b of the portion that separates that extends along the fore-and-aft direction of casing 26a at the central portion of the left and right directions of this casing 26a.The 26b of this separation portion uses the coefficient of friction parts higher than casing 26a.
As shown in Figure 3, picking up unit 24 comprises: roller 33 is sent in giving of the lower end that be installed on bolster 23 and the first arm 31 that can rotate, the lower end that is installed on the first arm 31 and second arm 32 that can rotate, is installed on second arm 32.On this second arm 32, be equipped with and turned round helical spring 35 as the force section.Thus, will be to sending roller 33 (second arm 32) towards using the paper P application of force.In addition, sent roller 33 to transmit the revolving force of bolster 23 via the transmission mechanism 34 that constitutes by driven gear 34a～34c.An end that turned round the first holding section 35b that an end that is provided with spire 35a on the helical spring 35, begins as the coiling of spire 35a is the arm of linearity at this, finishes as the coiling of spire 35a is the second holding section 35c of L word shape.
The first arm 31 comprises: a pair of first wrist 41 that leaves on the left and right directions, interconnect above-mentioned first wrist 41 and cover the top cover portion 42 of bolster 23 from the top.In each first wrist 41, position above it is provided with clutch shaft bearing portion 43, and this clutch shaft bearing portion 43 has the through hole that connects this wrist 41 on left and right directions.Position below first wrist 41 on right side is provided with from this wrist 41 towards right-hand outstanding the first axle part 44.Position below first wrist 41 in left side is provided with the second bearing portion 45, and this second bearing portion 45 has the through hole that connects this wrist 41 on left and right directions.Bolster 23 can be slidably inserted into clutch shaft bearing portion 43.In the present embodiment, utilize bolster 23 and clutch shaft bearing portion 43 to constitute " first rotation section 61 ".
The turned round helical spring 35 coaxial with second rotation section 62 is embedded in jut 53.
In addition, be provided with spring fixed part 70 in the place ahead of the jut 53 of second wrist 51 on right side, this spring fixed part 70 is that the center is arranged in circular-arc and constitutes from a plurality of ribs 76 of this wrist 51 towards right-hand extension by the pivot with second rotation section 62.From the overlooking of right-hand observation, it is the oblong-shaped that radially extends at center that above-mentioned rib 76 forms towards the pivot with second rotation section 62.
The first holding section 35b that is turned round helical spring 35 is inserted between the adjacent rib 76.In addition, it is chimeric and be inserted in the inserting hole (not shown) that is arranged at first wrist 41 to be turned round the slot part 42c of the second holding section 35c of helical spring 35 and top cover portion 42.
Give that to send roller 33 to be provided with chimeric and form the roller main part 33a of drum with the 3rd bearing portion 55.Outer peripheral face at this roller main part 33a is equipped with sliding contact parts 33b, this sliding contact parts 33b with paper butt and be the rubber components of drum.Left end at roller main part 33a is provided with and the driven gear 34c meshed gears 33c of portion (with reference to Fig. 4).
As shown in Figure 4, transmission mechanism 34 is made of driven gear 34a～34c.Driven gear 34a is mounted to bolster 23 one and rotates.Driven gear 34b and driven gear 34a, 34c both sides' engagement.Driven gear 34c and gear part 33c engagement.Also have, shown in the hollow arrow among the figure,, then driven gear 34b is turned clockwise and driven gear 34c is rotated counterclockwise owing to the rotation of driven gear 34a if driven gear 34a follows being rotated counterclockwise of bolster 23 and is rotated counterclockwise.Also have, sent roller 33 owing to the rotation of driven gear 34c turns clockwise.
As shown in Figure 5, be provided with first adjusting portion 71～the 5th adjusting portion 75 that between adjacent rib 76, forms on the spring fixed part 70.By the first holding section 35b that turned round helical spring 35 is engaged with any of above-mentioned first adjusting portion 71～the 5th adjusting portion 75, regulate the power of bestowing of being turned round helical spring 35.At this, form first adjusting portion 71～the 5th adjusting portion 75 successively towards the top from the below.Turned round the power of bestowing when helical spring 35 engages with first adjusting portion 71 and become minimum.On the other hand, turned round the power of bestowing when helical spring 35 engages with the 5th adjusting portion 75 and become maximum.In addition, along with from first adjusting portion 71 towards the 5th adjusting portion 75, the power of bestowing of being turned round helical spring 35 increases.
For the power of bestowing of being turned round helical spring 35 being increased and the first holding section 35b being become under the situation about engaging with the 4th adjusting portion 74 from the state that engages with the 3rd adjusting portion 73, shown in the dotted line among the figure, the operator makes the first holding section 35b break away from from the 3rd adjusting portion 73 by making the right-hand strain of the first holding section 35b to the 3rd adjusting portion 73.Then, be that the center is turned round helical spring 35 and made it and 74 fastenings of the 4th adjusting portion towards clockwise direction with second rotation section 62.Similarly, to be turned round the bestowing power of helical spring 35 and become under the situation about engaging in order to reduce with second adjusting portion 72 from engaging with the 3rd adjusting portion 73, the operator makes the first holding section 35b after the right-hand strain of the 3rd adjusting portion 73, is that the center is towards counterclockwise being turned round helical spring 35 and make it and 72 fastenings of second adjusting portion with second rotation section.
Then, describe to carrying for the mounting with paper P of being undertaken with reference to Fig. 6～Fig. 9 by conveying device 12.And each figure (b) represents to act on the power of picking up unit 24 peripheries and the schematic diagram of picking up the relation of angle that unit 24 is respectively.In Fig. 6～Fig. 8, with paper P use paper thick relatively thin and soft be " common paper " with paper.
Before will being positioned in loading tray 21, picking up unit 24 and be configured to sending roller 33 and mounting surface 21a butt with paper P.At this, picking up unit 24, to form the first axle base D1 littler than the second axle base D2, the described first axle base D1 is the length of the straight line of the center of rotation of the center of rotation that connects first rotation section 61 and second rotation section 62, and the described second axle base D2 is center of rotation that connects second rotation section 62 and the length (with reference to Fig. 6 (b)) of giving the straight line of the rotating shaft J that send roller 33.
As shown in Figure 6, will be with paper P mounting during, will be positioned in than giving with paper P and send the upstream side of roller 33, and, use paper P and sent roller 33 butts by using paper P to move towards the downstream by throughput direction in loading tray 21.Therefore, the component along mounting surface 21a with the deadweight of paper P acts on to sending roller 33.Thus, shown in the dotted line among the figure, utilize above-mentioned component, producing with first rotation section 61 is that the center makes the power that unit 24 clockwise rotates of picking up, and the first arm 31 and second arm 32 of therefore picking up unit 24 are center unitary rotation along clockwise direction with first rotation section 61.In addition, give and to be sent roller 33 to leave with respect to mounting surface 21a, and with paper P by to the gap of sending between roller 33 and the mounting surface 21a.Thus, with paper P and release liner 26 butts and give and send roller 33 and the top butt with paper P.
Shown in the solid line of Fig. 6, with paper P mounting in the state of loading tray 21 and give under the holding state that the rotation of sending roller 33 stops, pick up unit 24 and maintain following state: utilize and turned round helical spring 35, make the first arm 31 along with towards the below and forwards tilting, and make second arm 32 along with towards the below and tilted rearward.
Yet, under with the few situation of the sheet number of paper P,, pick up the state of picking up unit 24 of the state variation of picking up unit 24 of the dotted line of unit 24 from Fig. 6 to solid line by picking up the deadweight of unit 24.That is, in picking up unit 24, the first arm 31 is the center with first rotation section 61, and the lower end of the first arm 31 is towards rotating with paper P (counter clockwise direction among the figure).Follow in this, second arm 32 is kept the inclination angle with respect to the first arm 31, and promptly the first arm 31 and second arm 32 are integratedly towards rotating with paper P.
In addition, under holding state, turned round helical spring 35 and become natural length.Therefore, being turned round helical spring 35 does not produce the power of second arm 32 to the counter clockwise direction application of force.That is, do not produce on second arm 32 by what turned round that helical spring 35 forms and will be transferred the power with the paper P1 application of force (hereinafter referred to as " bestowing power S ") of medium to the conduct first of sending roller 33 in paper P, to be positioned at uppermost position in fig-ure.Therefore, give and to send roller 33 only to be and with the state of paper P1 butt.In addition, owing to give the trend of sending roller 33 not have rotation, therefore putting on to the frictional force of sending roller 33 with paper P1 is that roller frictional force f is " 0 ".
At this, the first arm 31 during with holding state and second arm, 32 angulation arm angle A are as reference angle A1.And, connection second rotation section 62 during with holding state and the straight line JL that gives the rotating shaft J send roller 33 and mounting surface 21a, with paper P1 with to being sent the acute angle inclination angle B that bearing surface became of roller 33 butts as reference angle B1.
As shown in Figure 7, will utilize carry with the state before the paper P1 (state before will carrying) to the rotation of sending roller 33 under, with paper P1 and as be transferred with second of this usefulness paper P1 butt on the stacked direction medium with paper P2 between produce with paper between frictional force F become maximum (below, be called " frictional force F1 between usefulness paper ").In addition, to be used for to be that separating load H becomes maximum (hereinafter referred to as " separating load H1 ") from the load that separates with paper P2 with paper P1 to release liner 26.Therefore thus, use paper P1, need be equivalent to the power of making a concerted effort, become maximum (hereinafter referred to as " carrying capacity T1 ") by the conveying of producing for the rotation of sending roller 33 with the power T of paper P1 with frictional force F1 between paper and separating load H1 in order to carry.In addition, because roller frictional force f is equivalent to the counter-force of carrying capacity T1, therefore before will carrying, become identical under the state with carrying capacity T1 size.
At this moment, in picking up unit 24, apply the power that this arm 32 is clockwise rotated owing to roller frictional force f and to second arm 32.Thus, the lower end of the first arm 31 is that the center rotates counterclockwise and to send the rotating shaft J of roller 33 be that the center clockwise rotates to give the upper end of second arm 32 with first rotation section 61.Its result, second rotation section 62 is towards moving with paper P.Utilize moving of this kind second rotation section 62, arm angle A becomes the angle A 2 bigger than reference angle A1 (A1＜A2), and inclination angle B becomes the angle B 2 littler than reference angle B 1 (B2＜B1).Follow the variation of above-mentioned arm angle A and inclination angle B, compare, give and to send roller 33 to move to downstream with the throughput direction of paper P with holding state.Thus, be applied with imagination when bestowing power S1 under the holding state with supposition and bestow power SK and compare, bestow power S 1 towards the downstream of the throughput direction application of force.
On the other hand, follow the rotation of second rotation section 62, turned round helical spring 35 to crooked in the opposite direction with application of force side.Follow in this, the recuperability R1 that is turned round helical spring 35 is applied on second arm 32.Promptly suitable with the above-mentioned recuperability R1 power S1 that bestows is applied on second arm 32.Thus, along with arm angle A increases from reference angle A1, turned round the opposition side bending of helical spring 35 to application of force direction, the recuperability R1 that is therefore turned round helical spring 35 increases.
At this, because inclination angle B is an angle B 2, by roller frictional force f formed will to send roller 33 when the power of nipping with paper P1 (fsinB2) is similarly produced by roller frictional force f during less than the angle B 1 of supposition at the inclination angle of holding state B to being sent roller 33 to the power of nipping (fsinB1), i.e. fsinB2＜fsinB1 with paper P1.
As shown in Figure 8, under with respect to the state of carrying with paper P2 with paper P1 (use the paper feed status), with paper P1 and with the frictional force F2 between the paper P2 become than Fig. 6 (b) will carry state before the time the little (F2＜F1) of frictional force F1.In addition and since with paper P1 with separate with paper P2, so separating load H is " 0 ".Thus, in order to keep feed status with paper P1, power that need be suitable with frictional force F2, the carrying capacity T2 during therefore with the paper feed status becomes than the little (T2＜T1) of carrying capacity T1.Thereby roller frictional force f is suitable with carrying capacity T2, thereby becomes than little during state before will carrying.
At this moment, in picking up unit 24, follow the minimizing of roller frictional force f, deasil rotate the lower end of the first arm 31, and rotate widdershins the upper end of second arm 32.Thus, second rotation section 62 is towards moving with paper P.Its result, arm angle A become angle A 3 between angle A 1 and the angle A 2 (A2＜A3＜A1).And inclination angle B becomes angle B 3 between angle B 1 and the angle B 2 (B1＜B3＜B2).Follow the variation of above-mentioned arm angle A and inclination angle B, give send roller 33 and will carry before state compare upstream side and compare side shifting downstream with holding state.
Therefore in addition, follow the rotation of second rotation section 62, turned round helical spring 35 to the direction bending identical with application of force direction, the recuperability R2 of this moment becomes than the little (R2＜R1) of recuperability R1.Thus, bestowing power S2 becomes than bestowing the little (S2＜S1) of power S1.
So, in picking up unit 24, along with from holding state to changing with the paper feed status, roller frictional force f, carrying capacity T, bestow power S and inclination angle B changes respectively.That is,, bestow power S and increase, but inclination angle B reduces along with carrying capacity T (roller frictional force f) increases.
But, promptly use the thickness difference of paper P, roller frictional force f, bestow power S, carrying capacity T and inclination angle B also changes respectively.That is, under with the different situation of the thickness of paper P, because separating load H variation, so roller frictional force f changes.Specifically, for separating load H as shown in Figure 9, under the thick situation with paper P3 of thickness as " photographic paper " or " postcard ", with comparing with paper P1 of as shown in Figure 7 the such thin thickness of common paper, separating load H becomes greatly.Follow in this, when carrying with paper P3 before will carrying under the state, compare with the situation of paper P1 with conveying, it is big that roller frictional force f becomes.Thus, carry the carrying capacity T3 with paper P3 to become bigger than carrying capacity T1, therefore the reference angle B1 when carrying with paper P1 compares, the angle B 4 of conveying during with the paper P3 (B4＜B1) that diminishes.
According to above-mentioned embodiment, can realize following effect.
(1), therefore can suppress to be turned round the inequality of the power of bestowing of being turned round helical spring 35 that the inequality of spring force of helical spring 35 self or alignment error etc. cause owing to can utilize first adjusting portion 71～the 5th adjusting portion 75 to adjust the power of bestowing of being turned round helical spring 35.Thus, suppress to be sent roller 33 to become excessive, thereby can suppress to send with the folded of paper P to crimp force with paper P1 crimping.
(2) under the situation that second arm 32 rotates with respect to the first arm 31, by being turned round helical spring 35 strains, being turned round helical spring 35 will be to sending roller 33 towards using the paper P application of force, therefore not rotating with respect to the first arm 31 with second arm 32 and make the first arm 31 is that the situation that rotate at the center is compared with first rotation section 61 with second arm 32 integratedly, bestows power S and becomes big.In this kind structure, when inserting with paper P when sending between roller 33 and the mounting surface 21a, utilize and push to the power of sending roller 33 with paper P, making the first arm 31 and second arm 32 is that rotate integratedly at the center with first rotation section 61.Thus, suppress to bestow the increase of power S, therefore suppress to sending the increase of roller 33 crimping with the power of paper P.Thus, can easily will use paper P mounting in conveying device 12.
(3) when second rotation section 62 is provided with the mechanism that limits the mounting sheet number of using paper P, under to the situation of sending roller 33 to carry with paper P, second rotation section 62 follow the first arm 31 and second arm 32 rotation and to moving with paper P, perhaps to a side shifting of leaving with paper P, therefore second rotation section 62 changes with respect to the position of mounting surface 21a.Its result, the restriction change in location of the mounting sheet number of paper P.Thus, can not clearly limit with paper P in fact can mounting arrive which kind of degree.
About this point, in the present invention, because the bend 42a of top cover portion 42 is from rotation outer side covers first rotation section 61 radially of first rotation section 61, when therefore rotated first rotation section 61, bend 42a can not change with respect to the position of mounting surface 21a yet.Therefore, for giving the situation of sending roller 33 to carry with paper P, the position of mounting surface 21a and bend 42a can not change yet.Thus, can clearly limit the maximum carrying capacity (mounting sheet number) of using paper P.
(4) therefore the bend 42a of cover portion 42 above the scope that the first arm 31 rotates is provided with suppresses to break away from from mounting surface 21a and the formed clearance G of bend 42a in the rotation of the first arm 31 with paper P midway.
(5) only, the first holding section 35b just the first holding section 35b can be remained in rib 76 by being hooked on the rib 76, therefore when the spring force of helical spring 35 is turned round in operator's adjusting, only the first holding section 35b is installed on the rib 76 after rib 76 unloads again and just can adjusts.Therefore, the operator can easily regulate the operation of the spring force of being turned round helical spring 35.
(6) pick up that unit 24 has first rotation section 61 and second rotation section 62 and on second rotation section 62, install and turned round helical spring 35 what second arm 32 applied the power of bestowing.Thus, state and before will carrying with under the paper feed status, the component of roller frictional force f is applied on second arm 32 as the power that second arm 32 is clockwise rotated.Utilize the effect of this power, follow the first arm 31 with first rotation section 61 be the center rotate widdershins and second arm 32 to send the rotating shaft J of roller 33 be that deasil rotate at the center to give, second rotation section 62 is towards moving with paper P.Thus, compare with holding state, inclination angle B follows the rotation of second rotation section 62 and diminishes.
In addition, utilize the rotation of second rotation section 62 and make and turned round helical spring 35 and produce recuperabilities, and utilize the recuperability of being turned round helical spring 35, turned round 35 pairs second arms 32 of helical spring and apply towards the power of bestowing with paper P direction.This is bestowed power and increases pro rata with the increase of being turned round the recuperability of helical spring 35.
Therefore, turned round the power of bestowing that 35 pairs second arms 32 of helical spring apply and increase, but inclination angle B diminishes, so the degree of the increase of roller frictional force f is littler than the degree of the increase of the above-mentioned power of bestowing.Its result can suppress roller frictional force f with respect to becoming excessive with frictional force F between paper, therefore can suppress to send with the folded of paper P.
Yet, follow the miniaturization of printer, conveying device is also improving for the requirement of miniaturization.At this requirement, consideration will be picked up the unit miniaturization.That is, consider to realize miniaturization by the length that shortens arm 130 as shown in figure 10.But when shortening the length of arm 130, arm 130 becomes bigger than acute angle X shown in Figure 10 with mounting surface 111 formed acute angles, therefore encourages and is sent roller 120 to nipping with paper Q.Therefore, nip in order to suppress above-mentioned, need reduce above-mentioned acute angle, therefore need extension arm 130, promptly the position configuration of driving shaft 140 is above more.But, in this case, the problem that exists conveying device to maximize.
About this point, in the present embodiment, by second arm 32 is tilted with respect to the first arm 31, do not change the position of bolster 23, and the rotation that utilizes second rotation section 62 makes the inclination angle B that is equivalent to above-mentioned acute angle reduce along with the increase of roller frictional force f, therefore can suppress above-mentioned generation of nipping.Therefore, can realize miniaturization and above-mentioned this two aspects effect of nipping of inhibition of conveying device 12 simultaneously.
Especially in conveying device shown in Figure 10 100, acute angle (inclination angle B) changes according to the carrying capacity with paper Q, sets for and it doesn't matter with the separating load of paper Q or with frictional force between paper.Thus, when after a little while with the carrying capacity of paper Q, though separating load or do not change with frictional force between paper, with paper Q to frictional force (roller frictional force) increase of sending roller 120 to apply.
About this point, in the present embodiment,, therefore can suppress by making that roller frictional force f produces to sending roller 33 to become excessive to the power of nipping (fsinB) with paper P1 according to inclination angle B being changed by separating load H and with the carrying capacity T that frictional force F between paper constitutes.
(7) according to the kind with paper, even identical sheet number, the size of separating load H is also different.For example, in common paper and the postcard, the paper of the paper thickness rate common paper of postcard is thick, so separating load H uprises.To this, in conveying device 100 as shown in figure 10, can be according to adjusting to the position of sending roller 120 with scraps of paper number, but can not be according to changing with the paper kind to giving roller 120 to the crimp force that connects with letterweight.Therefore, in conveying device 100, for example the separating load H with postcard is set under the situation of benchmark, when common paper with scraps of paper number after a little while, the situation that exists common quires to send.On the other hand, the separating load H of common paper is set under the situation of benchmark, when ground paper with scraps of paper number after a little while, give the carrying capacity T deficiency of sending roller 33, have the situation of idle running.
About this point, in the present embodiment, pick up unit 24 and increase according to the increase of separating load H and bestow power S, therefore when with paper P be paper such as postcard thick use paper the time, increase is to the carrying capacity T that send roller 33.On the other hand, pick up unit 24 and reduce according to the minimizing of separating load H and bestow power S, therefore when with paper P be paper thickness such as common paper use paper the time, carrying capacity T minimizing.Thus, even, also can suppress to sending roller 33 folded sending with paper P or to sending roller 33 idle running owing to causing under the different situation of separating load H with the thickness of paper P is different.
(8) by making the first axle base D1 littler than the second axle base D2, then to compare with first axle base situation bigger than second axle base, the distance that rotate second rotation section 62 becomes big.Thus, can increase and utilize the recuperability turned round helical spring 35 to adjust scope to the power of sending 33 pairs on roller to apply with paper P1.
(9) before will carrying, under the state, become maximum respectively, so carrying capacity T becomes maximum with frictional force F between paper and separating load H.To this, owing to making inclination angle B, 62 rotations of second rotation section become minimum, therefore can suppress the increase of roller frictional force f.Therefore, can suppress to use paper P1 to sending roller 33 to nip.
(10) follow the increase of bestowing power S, give and to send roller 33 to move, give thus and send the distance of roller 33 and release liner 26 to shorten to downstream with the throughput direction of paper P.Thus, therefore the relative grow of tenacity with paper P with the front end of paper P during with release liner 26 butts helps separation paper P.
Therefore in addition, follow the increase of bestowing power S, bestow power S towards the downstream, with respect to the degree of the increase of bestowing power S, the degree towards the increase of the component of upstream side of bestowing power S diminishes.Thus, with respect to the degree of the increase of bestowing power S, the degree of the increase of roller frictional force f diminishes.Therefore, can suppress to use paper P1 to sending roller 33 to nip.
(11) before as Fig. 7 or shown in Figure 9 will the conveying under the state, second rotation section 62 is limited in rotational action the position of leaving with paper P1, P3.Thus, even second rotation section 62 towards rotating with paper P1, P3, also can be avoided and use paper P1, P3 butt, therefore can utilize conveying device 12 to carry aptly with paper P1, P3.
In addition, above-mentioned embodiment also can followingly change.
In the above-described embodiment, also can make the first axle base D1 between first rotation section 61 and second rotation section 62 form with second rotation section 62 and give the second axle base D2 between the rotating shaft J that send roller 33 identical or more than.
In the above-described embodiment, also can omit release liner 26.
In the above-described embodiment, also can be direction with the throughput direction of paper P along fore-and-aft direction.In this case, give the upper surface butt that send roller 33 and use paper P.In addition, in holding state, along with the upstream side towards throughput direction, second arm 32 tilts towards the top.Along with the upstream side towards throughput direction, the first arm 31 tilts towards the below.And, becoming will carry with the state before the paper time, arm angle A increases and inclination angle B reduces.Thus, sent roller 33 to move towards the downstream of throughput direction.Follow this to give and send moving of roller 33, the recuperability R that is turned round helical spring 35 increases, and increases for thus the power of the bestowing S that send roller 33.In addition, under with the paper feed status, compare with carrying the state with before the paper, arm angle A reduces and inclination angle B increases.Thus, sent roller 33 to move towards the upstream side of throughput direction.Thus, reduced, thereby reduce for the power of the bestowing S that send roller 33 because turn round the recuperability R of helical spring 35.
In the above-described embodiment, turned round helical spring 35 and also can be installed on the first arm 31.In this case, be installed in the first arm 31 and second arm 32 respectively by the both ends that will be turned round helical spring 35, thereby follow the rotation of second rotation section 62, the recuperability R that is turned round helical spring 35 increases and decreases.
In the above-described embodiment, pick up other the position that unit 24 also can be installed in the part of loading tray 21 or printer 11.In this case, utilize above-mentioned position and clutch shaft bearing portion 43 to constitute first rotation section.In addition, in this case, also above-mentioned position can be formed the shape that is equivalent to clutch shaft bearing portion 43, and be provided with and the chimeric axial region in above-mentioned position at the first arm 31.
In the above-described embodiment, spring fixed part 70 also can be arranged at the first arm 31.In this case, the second holding section 35c forms linearity, and engages with spring fixed part 70.
In the above-described embodiment, the bend 42a of top cover portion 42 also can be arranged on the scope littler than the slewing area of first rotation section 61.In addition, also can omit bend 42a.
In the above-described embodiment, regulate the power of bestowing of being turned round helical spring 35 by first adjusting portion 71～the 5th adjusting portion 75 these 5 levels, but should regulate level so long as a plurality of level gets final product, its quantity is unqualified.
In the above-described embodiment, be transferred medium, except common paper, photographic paper and postcard, for example also can carry OHP etc. as what conveying device 12 was carried.
In the above-mentioned embodiment, conveying device 12 is not limited to only be applicable to ink-jet printer 11, also applicable to for example point impact printer, laser type printer, hot tranfer recording formula printer etc.In addition, be not limited to printer, also be transferred other device of medium applicable to conveying.
Claims (5)
1. conveying device is characterized in that possessing:
Delivery device body, it utilizes to sending roller to carry and is transferred medium;
The first arm, it is installed on described delivery device body, and can be that rotate with respect to described delivery device body at the center with first rotation section;
Second arm, it is installed on described the first arm, and can be that rotate with respect to described the first arm at the center with second rotation section, and is fixed with described give and send roller becoming a side opposite with described first rotation section with respect to described second rotation section;
Turned round helical spring, it to be being sent roller to act on described second rotation section towards the described mode that is transferred the medium application of force described give,
On described the first arm, be provided with first fixed part, the fixing described helical spring end of being turned round of this first fixed part,
On described second arm, be provided with second fixed part, the fixing described helical spring the other end of being turned round of this second fixed part,
Described first fixed part and described second fixed part one of at least on be provided with a plurality of spring hook portion, this spring hook portion is used to adjust the described helical spring spring force of being turned round.
2. conveying device according to claim 1 is characterized in that,
Described turned round helical spring according to described second arm with respect to the rotation of described the first arm and strain, the described thus helical spring of being turned round is sent roller towards the described medium application of force that is transferred with described.
3. conveying device according to claim 1 is characterized in that,
This conveying device sent the opposed position of roller to be provided with the described mounting surface that is transferred medium of mounting with described give,
Described first rotation section be provided with cover with the described opposed position of medium that is transferred, this cover is from described first rotation section of rotation outer side covers radially of described first rotation section,
The described mounting sheet number that is transferred medium is limited in the gap that utilizes described mounting surface and described cover to constitute.
4. conveying device according to claim 3 is characterized in that,
Described cover is arranged on described the first arm along with carrying the described described scope of sending the action of roller and rotating of giving that is transferred medium.
5. conveying device according to claim 1 is characterized in that,
The described helical spring of being turned round begins and the arm that is provided with one of at least linearity of coiling latter end at the coiling of the spire of reeling,
A plurality of described spring hook portion is made of a plurality of ribs,
Described arm is installed on described rib,
Regulate the described helical spring spring force of being turned round by changing the rib that described arm is installed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010088037A JP5526952B2 (en) | 2010-04-06 | 2010-04-06 | Transport device |
| JP2010-088037 | 2010-04-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102211469A true CN102211469A (en) | 2011-10-12 |
Family
ID=44708716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106230494A Pending CN102211469A (en) | 2010-04-06 | 2010-12-31 | Transportation device |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20110241291A1 (en) |
| JP (1) | JP5526952B2 (en) |
| CN (1) | CN102211469A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9261536B2 (en) * | 2012-08-14 | 2016-02-16 | Asm Technology Singapore Pte Ltd | Test contactor for electrical testing of electronic components |
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|---|---|---|---|---|
| US6322065B1 (en) * | 1999-12-22 | 2001-11-27 | Hewlett-Packard Company | Hinged-arm pick mechanism |
| US6503010B2 (en) * | 2000-05-31 | 2003-01-07 | Samsung Electronics Co., Ltd. | Paper pickup apparatus for a printer |
| CN1541920A (en) * | 2003-05-02 | 2004-11-03 | ������������ʽ���� | Paper feeding apparatus |
| US6896254B2 (en) * | 2003-03-28 | 2005-05-24 | Hewlett-Packard Development Company, L.P. | Auto compliant pick arm |
| JP3738497B2 (en) * | 1996-10-15 | 2006-01-25 | ブラザー工業株式会社 | Paper feeding device and printing device having the same |
| CN1923647A (en) * | 2005-08-31 | 2007-03-07 | 三星电子株式会社 | Printing media supply device for image forming apparatus |
| US20080309003A1 (en) * | 2007-06-14 | 2008-12-18 | Xerox Corporation | Nudger force preload adjustment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003081471A (en) * | 2001-09-07 | 2003-03-19 | Canon Inc | Sheet feeder and image forming device equipped therewith |
| JP3738743B2 (en) * | 2002-03-29 | 2006-01-25 | ブラザー工業株式会社 | Paper feeding device and image forming apparatus having the same |
| JP2009132520A (en) * | 2007-11-30 | 2009-06-18 | Kyocera Mita Corp | Pressure adjusting mechanism of retard roller, paper feeder, and image forming device |
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2010
- 2010-04-06 JP JP2010088037A patent/JP5526952B2/en active Active
- 2010-12-31 CN CN2010106230494A patent/CN102211469A/en active Pending
-
2011
- 2011-04-06 US US13/080,823 patent/US20110241291A1/en not_active Abandoned
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3738497B2 (en) * | 1996-10-15 | 2006-01-25 | ブラザー工業株式会社 | Paper feeding device and printing device having the same |
| US6322065B1 (en) * | 1999-12-22 | 2001-11-27 | Hewlett-Packard Company | Hinged-arm pick mechanism |
| US6503010B2 (en) * | 2000-05-31 | 2003-01-07 | Samsung Electronics Co., Ltd. | Paper pickup apparatus for a printer |
| US6896254B2 (en) * | 2003-03-28 | 2005-05-24 | Hewlett-Packard Development Company, L.P. | Auto compliant pick arm |
| CN1541920A (en) * | 2003-05-02 | 2004-11-03 | ������������ʽ���� | Paper feeding apparatus |
| CN1923647A (en) * | 2005-08-31 | 2007-03-07 | 三星电子株式会社 | Printing media supply device for image forming apparatus |
| US20080309003A1 (en) * | 2007-06-14 | 2008-12-18 | Xerox Corporation | Nudger force preload adjustment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5526952B2 (en) | 2014-06-18 |
| JP2011219202A (en) | 2011-11-04 |
| US20110241291A1 (en) | 2011-10-06 |
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Application publication date: 20111012 |