CN102583075A - Paper feeding control device and imaging equipment - Google Patents
Paper feeding control device and imaging equipment Download PDFInfo
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- CN102583075A CN102583075A CN2012100277640A CN201210027764A CN102583075A CN 102583075 A CN102583075 A CN 102583075A CN 2012100277640 A CN2012100277640 A CN 2012100277640A CN 201210027764 A CN201210027764 A CN 201210027764A CN 102583075 A CN102583075 A CN 102583075A
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Abstract
The invention provides a paper feeding control device and imaging equipment. The paper feeding control device comprises a driving gear, a paper feeding roll gear with tooth portion, a clutch piece and a control component, wherein the clutch piece is arranged on the end face of the paper feeding roll gear and radially slidably arranged along the paper feeding roll gear and is provided with a meshing portion facing the end of the driving gear, the meshing portion is in transmission with the driving gear, and the control component is used for controlling the clutch piece to slide along the paper feeding roll gear radially and meshes with or separates from the driving gear. During working, the paper feeding roll gear is stable in stress and requires low driving force, so that the paper feeding control device is stable in running, low in energy consumption and noise.
Description
Technical field
The present invention relates to the physical construction technology, relate in particular to a kind of paper feeding control setup and image forming apparatus.
Background technology
At present, image forming apparatus such as chopping machine, duplicator, facsimile apparatus, all-in-one multifunctional machine are used in people's live and work widely.
In above-mentioned image forming apparatus, the supply of recording mediums such as paper adopts intermittent mode to transmit usually, promptly control one transmits of feed roll, and the transmission of adjacent two recording mediums all has certain time interval.
For realize one time one separation and transmit recording medium, prior art has adopted the paper feeding control setup to control the step rotation of paper feed rollers in paper feed mechanism.Representative type paper feeding control setup is as shown in Figure 1, comprises driven wheel 300, gear spring 103 and the magnetic clutch 104 of ratchet 101, feed roll gear 200, feed roll.Wherein, driven wheel 300 links to each other with engine installation, and meshes with feed roll gear 200, is used under the driving of engine installation, rotating, and then drives 200 rotations of feed roll gear; Feed roll gear 200 is used for linking to each other with paper feed rollers 105 at paper feed mechanism, drives paper feed rollers 105 and rotates to carry out paper supply; Comprise one section hypodontia part 201 in the gear teeth of feed roll gear 200; Driven wheel 300 can't engaged transmission in hypodontia part 201; So; Cooperate the discontinuous rotation of control feed roll gears 200 when the corresponding driven wheel 300 of hypodontia part 201 by ratchet 101, gear spring 103 and magnetic clutch 104, thereby realize discontinuous driving paper feed rollers 105, so that the batch (-type) paper supply.
The structure that this paper feeding control setup is realized discontinuous driving is as shown in Figure 1, and ratchet 101 is fixedly connected on the side end face of feed roll gear 200, ratchet 101 and feed roll gear 200 coaxial rotation; Magnetic clutch 104 comprises power-transfer clutch main body 106, clutch spring 107 and grab 108.One end of clutch spring 107 is connected with first end of grab 108; The other end of clutch spring 107 is fixed on the power-transfer clutch main body 106; Second end of grab 108 engages with the ratchet of ratchet 101, and when magnetic clutch 104 powered up, the action of absorption grab 108 was to break away from spacing to ratchet; When magnetic clutch 104 outages, grab 108 breaks away from absorption and under the effect of clutch spring 107, resets; One end of gear spring 103 is fixed on the end face of ratchet 101, and the other end is fixed on the main body of image forming apparatus, is used for when ratchet 101 breaks away from grabs 108 spacing, driving ratchet 101 with elasticity and rotating with feed roll gear 200.
As shown in Figure 1, under initial condition, the hypodontia part 201 of feed roll gear 200 is relative with driven wheel 300, and the ratchet that grab 108 hooks ratchet 101 carries out spacing, and feed roll gear 200 is in the lock state, and this moment, gear spring 103 was in extended state.
As shown in Figure 2; When paper feeding, magnetic clutch 104 work, grab 108 is by magnetic clutch 104 main body adhesives; Releasing is to the locking of ratchet 101; This moment, ratchet 101 can rotate freely with feed roll gear 200, and under the effect of gear spring 103,200 beginnings of feed roll gear are rotated along the paper feeding direction.When having rotated through hypodontia part 201 by elastic force, feed roll gear 200 and driven wheel 300 engagements, rotation under the drive of driven wheel 300 realizes paper feeding.
The paper feeding control setup of above paper feed mechanism, can actv. realize one time one separation and transmit recording medium.But, because gear spring one end is fixed on the end face of ratchet, therefore in the paper feeding process; Gear spring can rotate and constantly is stretched along with ratchet together; The life-span of gear spring can reduce, and this moment, driven wheel needed bigger propulsive effort to overcome the pulling force of gear spring, had so just increased the driving power of image forming apparatus; Increase cost, also can produce bigger noise simultaneously.And in feed roll gear rotation process, the pulling force of gear spring is to change always, so this actuating device unsettled situation can occur in the work engineering.Particularly gear spring the situation that elasticity reduces occurs possibly behind repeated use, to such an extent as to reduce the accuracy that paper feed mechanism picks up paper.For example, when grab 108 broke away from ratchet 101, because gear spring 103 elasticity reduce, it can not drive 200 rotations of feed roll gear and cause the paper feeding failure, finally causes the image forming apparatus cisco unity malfunction, brings great inconvenience to the user.
Summary of the invention
The embodiment of the invention provides a kind of paper feeding control setup and image forming apparatus, to improve the working stability of paper feeding control setup.
The embodiment of the invention provides a kind of paper feeding control setup, comprises driven wheel and the feed roll gear that has the hypodontia part, also comprises:
Clutch block, said clutch block are arranged on the end face of said feed roll gear and along the setting that radially slides of said feed roll gear, said clutch block is provided with the engaging piece that is used for the driven wheel transmission towards the end of driven wheel;
Control assembly, said control assembly are used to control clutch block along the radially sliding of said feed roll gear, with the driven wheel engagement or separate.
The embodiment of the invention provides a kind of image forming apparatus, comprises feed roll at least, the paper feeding control setup that wherein also comprises any embodiment of the present invention and provided, and the feed roll gear in the said paper feeding control setup links to each other with said feed roll.
Paper feeding control setup provided by the present invention and image forming apparatus, can realize effectively one time one separation and recording medium is provided and intermittence provides recording medium.Simultaneously, this paper feeding control setup in the course of the work because the control clutch block is along the radially sliding of feed roll gear, so the feed roll strength of gear is stable, required propulsive effort is little, so this paper feeding control setup is stable, low energy consumption, low noise.In addition, simple in structure, the easy installation and removal of this paper feeding control setup, actv. has been practiced thrift productive costs.
Description of drawings
Fig. 1 be in the prior art a kind of paper feeding control setup at the structural representation of lock-out state;
Fig. 2 be in the prior art a kind of paper feeding control setup at the structural representation of released state;
The structural representation of the typical image forming device that Fig. 3 is suitable for for paper feeding control setup of the present invention;
The structural representation of the paper feeding control setup that Fig. 4 provides for the embodiment of the invention two;
The structural representation of feed roll gear in the paper feeding control setup that Fig. 5 provides for the embodiment of the invention two;
The structural representation of clutch block 400 in the paper feeding control setup that Fig. 6 provides for the embodiment of the invention two;
The end face structure scheme drawing of the paper feeding control setup that Fig. 7 provides for the embodiment of the invention two;
The structure scheme drawing of the paper feeding control setup that Fig. 8 provides for the embodiment of the invention two;
The structural representation of resetting block 702 in the paper feeding control setup that Fig. 9 provides for the embodiment of the invention two;
The structural representation of control setup in the paper feeding control setup that Figure 10 provides for the embodiment of the invention two;
The paper feeding control setup that Figure 11 provides for the embodiment of the invention two is in the structural representation of released state;
The structural representation of the paper feeding control setup that Figure 12 provides for the embodiment of the invention three;
The structural representation of the paper feeding control setup that Figure 13 provides for the embodiment of the invention four;
The structural representation of the paper feeding control setup that Figure 14-16 provides for the embodiment of the invention five;
The structural representation of the paper feeding control setup that Figure 17 and 18 provides for the embodiment of the invention six;
The structural representation of the paper feeding control setup that Figure 19 and 20 provides for the embodiment of the invention seven.
101: ratchet; 102: feed roll; 103: gear spring;
104: magnetic clutch; 105: paper feed rollers; 106: the power-transfer clutch main body;
107: clutch spring; 108: grab; 109: shell;
110: image forms processing unit; 111: laser scanner;
112: fixation unit; 113: paper feeding disk; 114: transfer roller;
115: charging roller; 116: photosensitive drums; 117: developer roll;
118: transfer roll; 119: eduction gear; 120: the discharge dish;
200: the feed roll gear; 201: the hypodontia part; 202: toothed portion is arranged;
203: S. A.; 204: limit assembly; 205: the slide rail projection is right;
206: the five projections;
300: driven wheel; 301: the gear body; 302: linkage gear;
303: pointed tooth; 304: friction lining;
400: clutch block; 401: engaging piece; 402: through hole;
403: the middle part slide block; 404: the end face slide block; 405: lateral protrusion;
406: fixed mount; 407: the first end plates; 408: the second end plates;
409: the four projections; 410: support spring; 411: stretch;
501: fixed end; 502: the first projections;
600: elastic parts; 601:U shape spring;
701: the second projections; 702: resetting block; 703: the cam chute;
703a: chute inlet; 703b: chute outlet;
801: the first control handles; 802; Pedestal; 803: hold-down arm;
804: position limit arm; 805: relay; 806: spacing hole;
807: claw; 808: the three projections; 809: the control handle spring;
810: the six projections; 811: the second control handles.
The specific embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer; To combine the accompanying drawing in the embodiment of the invention below; Technical scheme in the embodiment of the invention is carried out clear, intactly description; Obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Embodiment one
The embodiment of the invention one provides a kind of paper feeding control setup, comprises driven wheel and the feed roll gear that has the hypodontia part, also comprises clutch block and control assembly.Wherein, said clutch block is arranged on the end face of said feed roll gear and along the setting that radially slides of said feed roll gear, said clutch block is provided with the engaging piece that is used for the driven wheel transmission towards the end of driven wheel; Control assembly, said control assembly are used to control clutch block along the radially sliding of said feed roll gear, with the driven wheel engagement or separate.
The paper feeding control setup that present embodiment provided since through control assembly control clutch block along the radially sliding of feed roll gear, so can make the motion stabilization of clutch block, the application of force is balanced, improves the stability of paper feeding control setup work.The form of this engaging piece can be multiple, for example involute gear tooth, pointed tooth or friction lining etc.
Control assembly in the foregoing description can specifically be made up of drive part, reset part, control part and elastic part.Wherein:
Drive part is used for along replacing direction applying the power of replacing to clutch block, wherein, replace direction and be clutch block along the feed roll gear radially and away from the direction of feed roll gear center.It will be appreciated by those skilled in the art that; Replace direction and be radially identical with the feed roll gear roughly; Be not limited to strict identically, also certain low-angle can be arranged, as long as can make mate fill up the tooth mesh transmission on hypodontia part and the driven wheel through the slip of clutch block.
The part that resets is used for applying reset force along the direction that resets to clutch block, wherein, the direction that resets for drive clutch block along the feed roll gear radially and near the direction of feed roll gear center.Typically be reset direction with replace in the opposite direction.
Elastic part is arranged on and is used in the drive part apply along replacing the power of direction, or is arranged on and is used to apply the reset force along the direction that resets in the part that resets.Preferably be provided with the drive part of elastic part or the part that resets can be rotated with the feed roll gear; Thereby the draw direction of assurance elastic part all the time along the feed roll gear radially; The rotation with the feed roll gear does not change; Can guarantee the stability of the application of force like this, and the stability of elastomeric element elastic force.
Control part comprises controller and control handle at least, the action of controller drives control handle.Apply in the drive part when replacing power when elastic part is arranged on, said control part is used to apply or remove the restriction to the said power of replacing.When elastomeric element is arranged in the part that resets when applying reset force, said control part is used to apply or remove the restriction to said reset force.
In the present embodiment, clutch block specifically is that the toothless portion) that is used to fill up the feed roll gear assigns to contact with driven wheel, makes driven wheel can drive the feed roll gear and rotates; Can break away from simultaneously and contact, expose the hypodontia part with driven wheel.And when clutch block contacts with driven wheel, when can disengage, and then implements control by control assembly.
Elastic part is arranged in the drive part; Be used for directly forming or the auxiliary power of replacing that forms; Control part is externally drive controlling handle action under the triggering of signal then, and the action of control handle can apply or remove the restriction to elastic part, so that switch the operation that radially slides of clutch block.
It will be understood by those skilled in the art that clutch block, drive part, the above-mentioned matching relationship of reset part, elastic part and control part can meet the demands through various structure and Position Design.Below will be through the preferred embodiment explanation that makes an explanation.
The technical scheme of present embodiment is provided with the power of replacing and the reset force that drive clutch block, all roughly along radially the applying of feed roll gear, can in feed roll gear rotation process, not exert an influence to it, and it is at the uniform velocity stable to have guaranteed that promptly the feed roll gear rotates.And elastic part can constantly not be stretched because of the rotation of feed roll gear, can guarantee the stable of its performance, can not cause the paper feeding failure, has prolonged its service life simultaneously.
On the basis of the foregoing description, also limit assembly can be set further in the paper feeding control setup, limit assembly is fixedly set on the end face of feed roll gear; Control assembly is used to contact or break away from the side of limit assembly, realizes applying or remove spacing to the rotation of feed roll gear.Specifically can be control handle action in the control assembly with contact or break away from the side of limit assembly, realize the feed roll gear rotated applying spacing or remove spacing.
Technique scheme is through being provided with limit assembly, and controlled by the unified action of control assembly equally, can make the rotation of feed roll gear and the sliding extension synchronous coordination of clutch block, increased the stability that device moves.
Be clear structure and the working process of introducing the paper feeding control setup, this paper is the structure of the typical image forming device of the suitable paper feeding control setup of the present invention of brief account at first.
As shown in Figure 3, this image forming apparatus comprises that shell 109, paper feeding disk 113, image form processing unit 110, laser scanner 111, fixation unit 112 and eduction gear 119.It is following that this image forms the basic equipment principle of work: a plurality of recording medium P that are stacked on the paper feeding disk 113 are transported to image formation processing unit 110 by feed roll 102 and transfer roller 114.It is image formation units of image forming apparatus that image forms processing unit 110, specifically comprises charging roller 115, photosensitive drums 116, developer roll 117 and transfer roll 118.116 chargings of 115 pairs of photosensitive drums of charging roller; Laser scanner 111 will have the laser radiation of graphicinformation on charged photosensitive drums 116, make photosensitive drums 116 surfaces form latent image; Developer roll 117 is transferred to carbon dust on the photosensitive drums 116, photosensitive drums 116 lip-deep latent images is developed form the carbon dust image; Transfer roll 118 is transferred to the carbon dust image on the photosensitive drums 116 on the recording medium P.Recording medium P is transported to fixation unit 112 after the transfer printing, on recording medium P, forms firm carbon dust image through fixation unit 112.The medium of photographic fixing record images P is discharged from device 119 and is expelled on the discharge dish 120.
In image forming apparatus, the operation of the paper feeding of feed roll 102 is driven by the paper feeding control setup, specifically is the rotation by feed roll gear drive feed roll.When image forming apparatus needs paper supply, can send actuation signal and give the paper feeding control setup, trigger the operation that the paper feeding control setup is carried out a paper supply, then the paper feeding control setup is waited for actuation signal next time, carries out repeatedly.
Specifically introduce the structure and the paper supply operation of paper feeding control setup among the embodiment one below through preferred embodiment.
Embodiment two
The structural representation of the paper feeding control setup that Fig. 4 provides for the embodiment of the invention two, present embodiment can be the basis with the foregoing description, and have provided a kind of preferred compositions implementation of control assembly.
The paper feeding control setup of present embodiment comprises feed roll gear 200 and driven wheel 300.Feed roll gear 200 can be described as the hypodontia gear again, like Fig. 4 and shown in Figure 5, includes toothed portion 202 and hypodontia part 201 on it.Feed roll gear 200 is connected with feed roll 102 through paper feed rollers 105, to drive its rotation.
This paper feeding control setup comprises clutch block and control assembly, and this control assembly specifically is to comprise first drive part, first partial sum first control part that resets.First elastic part is arranged among first drive part.Wherein:
Shown in Fig. 4 and 6, clutch block 400 is arranged on the end face of feed roll gear 200 1 sides and along the setting that radially slides of feed roll gear 200, clutch block 400 is provided with the engaging piece 401 that is used for driven wheel 300 Contact Transmission towards the end of driven wheel 300.Clutch block 400 can have multiple along the implementation that feed roll gear 200 radially slides; Like chute slide rail form; Can be on the end face of feed roll gear 200, to be formed with through hole 402 in the present embodiment; Like Fig. 5 and shown in Figure 7, clutch block 400 is chimeric and be slidingly arranged in the through hole 402, so that along the setting that radially slides of feed roll gear 200.
Like Fig. 5 and shown in Figure 6; First end of first drive part is captiveed joint with the feed roll gear; Second end of first drive part is captiveed joint with clutch block 400; Be provided with first elastic part between first end of first drive part and second end, be used for applying the power of replacing to clutch block along replacing direction.In the present embodiment, first drive part specifically comprises the fixed end 501 and first projection 502.Fixed end 501 is fixedly installed on the S. A. 203 of feed roll gear 200 as first end of first drive part; First projection 502 is fixedly installed on the side of clutch block 400 as second end of second drive part.
Elastic parts 600 is as first elastic part; Be arranged on and be used to apply the power of replacing in first drive part along replacing direction; In the present embodiment; As shown in Figure 7, elastic parts 600 fixed clamp are used for along replacing direction clutch block 400 being applied the power of replacing between first projection 502 and fixed end 501.The concrete structure of elastic parts 600 is not limit, as long as can between apply elastic force, like extension spring etc.In the present embodiment, fixed end 501 is for being arranged on feed roll gear 200 S. A.s 203 external peripheral surfaces and towards a guide pillar of clutch block 400, and first projection 502 is for being arranged on the clutch block 400 and towards another guide pillar of fixed end 501.Extension spring 600 promptly is set between two guide pillars.It is equal along the height of feed roll gear 200 axial directions that two guide pillars can be set, and adopt interference fit with extension spring, thereby guarantee that extension spring can not break away from from guide pillar easily.Extension spring is in compressed state always, applies elastic force to two guide pillars.Elastic parts 600 integral body can be rotated with feed roll gear 200; Can be in feed roll gear 200 rotation processes by continuous stretching; Guaranteed the stability of its performance; Can not cause the paper feeding failure, thereby guarantee the stability of image forming apparatus performance, prolong the service life of elastic parts 600 simultaneously yet.
First reset portion is divided with respect to the movable setting of feed roll gear, does not promptly rotate with the feed roll gear, and first resets partly is used for applying reset force to clutch block 400 along the direction that resets.In the present embodiment, like Fig. 6 and shown in Figure 9, first resets partly specifically comprises second projection 701 and resetting block 702.As shown in Figure 6, second projection 701 as first reset the part first end, be fixedly installed on the side that deviates from first projection 502 on the clutch block 400, and pass through hole 402, as shown in Figure 8; Like Fig. 4 and shown in Figure 9; Resetting block 702 as second reset the part second end, be fixedly installed on a side that deviates from clutch block 400, and resetting block 702 is provided with cam chute 703; Be used for ccontaining second projection 701; In clutch block 400 rotation processes, it is slid into going-back position from progressive position, said progressive position is the position of clutch block 400 away from feed roll gear 200 centers, and said going-back position is the position of clutch block 400 near the feed roll gear center.First control part comprises first controller and 801 actions of first control handle, 801, the first controller drives, first control handle at least, to apply or to remove replacing the restriction of power.In the present embodiment, like Fig. 4 and shown in Figure 10, first control part also comprises the support that pedestal 802, hold-down arm 803 and position limit arm 804 constitute, and support can be fixed on the image forming apparatus.First controller specifically is a relay 805, can be installed on the pedestal 802 of support.The middle part of first control handle 801 is supported on the hold-down arm 803; First end of first control handle 801 is plugged in the spacing hole 806 of position limit arm 804; Second end of first control handle 801 is provided with between second end and the pedestal 802 of claw 807 and the 3rd projection 808, the first control handles 801 and is connected with control handle spring 809.Relay 805 is installed on the pedestal 802, is used to control first control handle 801 and is being parallel to replace in direction and the plane perpendicular to feed roll gear 200 end faces around hold-down arm 803 and swings, and is as shown in Figure 4.Claw 807 axially stretches out along feed roll gear 200, is used for when 801 swings of first control handle, breaking away from or contact clutch block 400, to remove or to apply replacing the restriction of power.
In the present embodiment, as shown in Figure 5, also be provided with limit assembly 204 on the paper feeding control setup, limit assembly 204 is fixedly set on the end face of feed roll gear 200.801 actions of first control handle are so that the side of 808 contacts of the 3rd projection or disengaging limit assembly 204 realizes that 200 rotations apply spacing or remove spacing to the feed roll gear.Specifically can be that the 3rd projection 808 and limit assembly 204 on first control handle 801 is along the mutual abutting and spacing of the rotation direction of feed roll gear 200; 801 swings of first control handle are so that the side of 808 contacts of the 3rd projection or disengaging limit assembly 204 realizes that 200 rotations are implemented spacing or removed spacing to the feed roll gear.
For forming the slip of limit assembly 204 and stable guiding clutch block 400; It is right to have formed the slide rail projection in the present embodiment; A side that promptly at feed roll gear 200 clutch block 400 is set has formed two projections, and two projections are symmetrically distributed in the both sides of through hole 402, axially have identical height along feed roll gear 200; Be equivalent to form slide rail, thus direction of slip that can supplemental pilot clutch block 400.In addition, slide rail projection centering can also be held concurrently as limit assembly 204 towards the projection of feed roll 102 rotation directions, its side cooperate with first control handle 801 realize to feed roll gear 200 rotate spacing.Preferably as shown in Figure 5, be stepped as the projection of limit assembly 204, be used for first control handle 801 on the 3rd projection 808 shapes match.
Comprehensive said structure demand, the shape and the structure of clutch block 400 are as shown in Figure 6, have comprised the middle part slide block 403 with through hole 402 form fit; One side of middle part slide block 403 is provided with second projection 701, and opposite side setting and slide rail projection are to the end face slide block 404 of form fit; Also form a lateral protrusion 405 on the end face slide block 404, so that first projection 502 is set; End face slide block 404 is and the circular-arc surface of S. A. 203 couplings that the other end forms engaging piece 401 towards an end of feed roll gear 200 S. A.s 203.In the present embodiment, engaging piece 401 is several involute gear tooths.
Resetting block 702 is a roughly semi-round tabular body, can be fixedly installed on the main body (not shown) of image forming apparatus.Resetting block 702 is fixed guide parts, and it is provided with cam chute 703, is used for ccontaining second projection, 701, the second projections 701 when rotating with feed roll gear 200, also to move along cam chute 703, thereby realizes that guiding clutch block 400 radially slides.Cam chute 703 path of motion setting as required, institute is shown in Figure 9 in the present embodiment, is involute shape.
The paper feeding control setup working process of present embodiment is following:
As shown in Figure 4; At initial condition, the hypodontia part 201 of feed roll gear 200 is over against the center of driven wheel 300, and relay 805 outages of first control part are not worked; The claw 807 of first control handle 801 hooks the lateral protrusion 405 of clutch block 400; Elastic parts 600 is imposed on clutch block 400 replace power and limit, clutch block 400 is in going-back position, and elastic parts 600 is in degree of depth compressive state; The 3rd projection 808 of first control handle, 801 sides cooperates with the limit assembly 204 of feed roll gear 200, makes feed roll gear 200 stably remain on initial position.When the image forming apparatus power connection; The propulsive effort that the driving motor (not shown) produces passes to driven wheel 300 through the gear train assembly (not shown); Driven wheel 300 beginnings are with constant speed rotation; The hypodontia part 201 of feed roll gear 200 is over against driven wheel 300 at this moment, and feed roll gear 200 does not change.
Shown in figure 11, when paper feeding when beginning operation, be used to be enabled in first end that actuation signal that first recording medium P go up imaging operation is sent to relay 805, the first control handles 801 by relay 805 adhesives; First control handle 801 is around hold-down arm 803 swings; Claw 807 breaks away from the lateral protrusion 405 of clutch blocks 400 at this moment; Remove it replaces power to clutch block 400 restriction; Clutch block 400 is replaced at elastic parts 600 under the effect of power and is moved to progressive position by going-back position, the involute gear tooth of clutch block 400 ends and driven wheel 300 engagements, and driven wheel 300 passes to clutch block 400 with propulsive effort.Because the 3rd projection 808 of first control handle 801 has broken away from the limit assembly 204 of feed roll gear 200 at this moment, feed roll gear 200 can rotate freely, so feed roll gear 200 begins rotation, the operation of beginning paper feeding under the propulsive effort effect of clutch block 400.
When feed roll gear 200 has rotated through hypodontia part 201, this moment feed roll gear 200 toothed portion 202 and driven wheel 300 engagement rotations are arranged, continue the paper feeding operation.
Slide rail projection on feed roll gear 200 is to having rotated through the 3rd projection 808 positions of first control handle, 801 sides, and before feed roll gear 200 rotated a circle, relay 805 cut off the power supply under the effect of control signal, quits work.First control handle 801 resets under the elastic force effect of control handle spring 809.After feed roll gear 200 rotated to an angle, second projection 701 on the clutch block 400 got into the cam chute 703 of resetting block 702.Second projection 701 moves to the process of chute outlet 703b from chute inlet 703a, and clutch block 400 is moved by the progressive position position of drawing back gradually, and elastic parts 600 is compressed gradually.When second projection 701 moved to 703 outlets of cam chute, clutch block 400 was in going-back position, and feed roll gear 200 just moves a week, accomplished the feeding operation of first recording medium P.At this moment; The limit assembly 204 of feed roll gear 200 cooperates with the side of first control handle 801 the 3rd projection 808, and feed roll gear 200 stops the rotation, and the claw 807 of first control handle, 801 ends cooperates with the lateral protrusion 502 of clutch block 400; Make clutch block 400 remain on going-back position; Be that the paper feeding control setup restPoses, the relay of first control part 805 waits for that next signals carry out the paper feeding action, realizes one intermittent paper feeding one time.
Embodiment three
The structural representation of the paper feeding control setup that Figure 12 provides for the embodiment of the invention three; Engaging piece 401 in the foregoing description two is not limited to adopt involute gear tooth; Can also adopt pointed tooth 303; Shown in figure 12, driven wheel 300 comprise gear body 301 with gear body 301 side by side and the linkage gear 302 of captiveing joint, linkage gear 302 has pointed tooth 303.The engaging piece 401 of clutch block 400 is a pointed tooth, with linkage gear 302 engagement fit.
In the present embodiment; The clutch block 400 that will have involute gear tooth engaging piece 401 is designed to the clutch block 400 that the end has pointed tooth structure engages portion 401; On driven wheel 300, correspondingly be provided with simultaneously the linkage gear 302 of pointed tooth 303 structures; Linkage gear 302 is fixedly linked with engaging gear body 301, as the part of driven wheel 300.The pointed tooth of clutch block 400 part and linkage gear 302 engagements drive, and other of feed roll gear 200 have toothed portion 202 still to drive with 301 engagements of driven wheel body.In the working process, engaging piece of clutch block 400 401 and linkage gear 302 engagements drive feed roll gear 200 and rotate, turn over hypodontia part 201 after, feed roll gear 200 rotates with the involute gear tooth engagement of driven wheel body 301, realizes paper feeding.This implementation principle of work is identical with above-mentioned implementation.Employing pointed tooth structure can effectively reduce the probability of apical tooth, and more effectively pulsation-free engagement.
Embodiment four
The structural representation of the paper feeding control setup that Figure 13 provides for the embodiment of the invention four; Engaging piece 401 in the foregoing description two is not limited to adopt involute gear tooth; Can also adopt friction lining; Shown in figure 13, driven wheel 300 comprise gear body 301 with gear body 301 side by side and the linkage gear 302 of captiveing joint, linkage gear 302 surfaces are friction lining 304.The engaging piece 401 of clutch block 400 is a friction lining, with friction lining 304 engagement fit of linkage gear 302, and promptly mutual frictional fit.
Shown in figure 13; The clutch block 400 that present embodiment will have involute gear tooth engaging piece 401 changes the clutch block 400 that the end has friction plate structure engaging piece 401 into, and while corresponding setting friction lining 304 on the linkage gear 302 of driven wheel body is when the friction lining 304 of clutch block 400 and linkage gear 302 meshes; Driving feed roll gear 200 through friction force rotates; After turning over hypodontia part 201, feed roll gear 200 rotates with the involute gear tooth engagement, realizes paper feeding.This implementation working process is identical with above-mentioned implementation.Adopt friction lining to realize that engagement drives, can avoid the apical tooth situation by actv., and can the pulsation-free transmission, noise is little, is particularly suitable for the less image forming apparatus of load and uses.
Embodiment five
The structural representation of the paper feeding control setup that Figure 14-16 provides for the embodiment of the invention five, present embodiment can be the basis with the foregoing description one, and has provided the another kind of preferred implementation that cooperates of control assembly.
The paper feeding control setup of present embodiment comprises clutch block and control assembly, and control assembly specifically comprises second drive part, second partial sum second control part that resets, and second elastic part is arranged on second and resets in the part.Wherein:
Shown in Figure 14-16; Clutch block 400 is arranged on the end face of feed roll gear 200 1 sides and along the setting that radially slides of feed roll gear 200, clutch block 400 is provided with the engaging piece 401 that is used for driven wheel 300 Contact Transmission towards the end of driven wheel 300.Engaging piece 401 in the present embodiment still is an involute gear tooth.
Second drive part is with respect to the movable setting of feed roll gear, and second drive part is used for applying the power of replacing along replacing direction to clutch block.Second reset the part first end fixedly install with respect to feed roll gear 200; Second reset the part second end captive joint with clutch block; Second resets is provided with second elastic part between first end partly and second end; Be used for applying reset force along the direction that resets to clutch block 400, the direction that resets for drive clutch block along the feed roll gear radially and near the direction of feed roll gear center.Second control part comprises second controller and 811 actions of second control handle, 811, the second controller drives, second control handle at least, to apply or to remove the restriction to reset force.
In the present embodiment, this second control part comprises that specifically fixed mount 406, the second controllers are that relay 805, the second control handles 811 two ends are provided with first end plate 407 and second end plate, 408, the second end plates 408 as second drive part.Second drive part also comprises the 4th projection 409 that is fixedly installed on the clutch block 400.
Second drive part and second control part cooperatively interact and form the restriction to reset force, and form the power of replacing.Shown in Figure 14-16, fixed mount 406, relay 805 and second control handle 811 be radially being provided with over against clutch block 400 along feed roll gear 200 all.First end plate, the 407 drawn bars 411 of second control handle 811 are connected with relay 805, and stretch 411 also can play the effect of supporting second control handle 811.The operation that powers up of relay 805 is shunk stretch 411, drives second control handle 811 through first end plate 407 and advances, and this moment, support spring 410 was compressed; The power operation of relay 805 makes the end plate 407 of winning under the effect of support spring 410, drive second control handle, 811 fallback recoveries to going-back position.In this process, first end plate 407 drives second control handle 811 along feed roll gear 200 crank motion radially.And then replace the 4th projection 409 of clutch block 400 with second end plate 408 of second control handle 811, drive clutch block 400 and move reciprocatingly.Be appreciated that; First end plate 407 and second end plate 408 are not limited to mutual vertical shown in the present embodiment; Be positioned at the not platy structure of ipsilateral of second control handle 811; Can also be other shapes or position, and fixed mount 406 can be inverted also with relay 805, as long as can realize that second control handle 811 is along feed roll gear 200 crank motion radially.
In the present embodiment, second elastic part is arranged on second and resets and be used to apply along the reset force of the direction that resets in the part.The S. A. 203 that specifically can adopt feed roll gear 200 as second reset part first end, it fixedly installs with respect to feed roll gear 200, second reset part second end be the fixed projection on the clutch block 400.Second elastic part is a U-shaped spring 601; Fixed cover is located on the S. A. 203 of feed roll gear 200; And captive joint with the fixed projection of clutch block 400 in the end of U-shaped spring 601; Be used for applying reset force, drive clutch block 400 and move and break away from and the contacting of driven wheel 300 along the direction that resets to clutch block 400.The second elastic part integral body can not guaranteed the stability of its performance by continuous stretching with 200 rotations of feed roll gear in feed roll gear 200 rotation processes, can not cause the paper feeding failure, thereby guarantee the stability of image forming apparatus performance.
For the reliable rotation that limits feed roll gear 200, also comprise limit assembly in the present embodiment, limit assembly is fixedly set on the end face of feed roll gear 200; 811 actions of second control handle are with contact or break away from the side of limit assembly, realize that 200 rotations apply spacing or remove spacing to the feed roll gear.
Concrete, the end face of present embodiment feed roll gear 200 is provided with the slide rail projection to 205, be used for clamping and guide the direction of slip of clutch block 400, specifically can with the slide rail projection to 205 be symmetrically distributed in hypodontia part 201 both sides.Limit assembly is the 5th projection 206 that is fixedly installed on the end face of feed roll gear 200, can radially being provided with 205 with respect to the slide rail projection along feed roll gear 200.Position corresponding to the 5th projection 206 on second control handle 811 is provided with the 6th projection 810; Be used in the 6th projection 810 with second control handle 811 along feed roll gear 200 moves radially time contact or break away from the side of the 5th projection 206, realize rotate spacing of feed roll gear 200 or remove spacing.
The slide rail projection can cooperate through relative position the 205 and the 5th projection 206 to be avoided interfering with the 6th projection 810.For example, the certain distance that upwards staggers in the footpath of feed roll gear 200.Perhaps; Design slide rail projection is to 205 the height height less than the 5th projection 206 in the present embodiment; Then second end plate 408 and the 6th projection 810 can both leave certain interval at feed roll gear 200 on axially with 205 pairs of slide rail projections and avoid interfering, and the 6th projection 810 can cooperate spacing with the 5th projection 206 simultaneously.
The paper feeding control setup working process of present embodiment is following:
At initial condition, the hypodontia part 201 of feed roll gear 200 is over against the center of driven wheel 300, and relay 805 is not worked, and second control handle 811 is in the position away from driven wheel 300 centers, i.e. going-back position under the effect of support spring 410 elastic forces.Clutch block 400 also is in going-back position under the restriction of second control handle, 811 second end plates 408.Feed roll gear 200 receives stopping of second control handle 811 the 6th projection 810 because of its 5th projection 206, and is non-rotatable.When the image forming apparatus power connection, the propulsive effort that the driving motor (not shown) produces passes to driven wheel 300 through the gear train assembly (not shown), and driven wheel 300 beginnings are with constant speed rotation, and feed roll gear 200 does not change at this moment.
When paper feeding when beginning operation, be used to be enabled in the actuation signal that first recording medium P go up imaging operation and be sent to relay 805, relay 805 is activated, stretch 411 retractions.Because stretch 411 is captiveed joint with first end plate 407 of second control handle 811, therefore second control handle 811 advances under the effect of stretch 411, and promptly towards the motion of driven wheel 300 directions, support spring 410 is in compressive state.This moment, the 6th projection 810 broke away from feed roll gears 200 the 5th projection 206 owing to second control handle 811 advances, and feed roll gear 200 can rotate freely.Towards driven wheel 300 motions, rotate by clutch block 400 front end involute gear tooths and driven wheel 300 engagements under the promotion of second control handle 811 for clutch block 400, and feed roll gear 200 begins rotation under clutch block 400 drives, the operation of beginning paper feeding.U-shaped spring 601 is in extended state at this moment.When feed roll gear 200 has rotated through hypodontia part 201; Second end plate 408 of second control handle 811 breaks away from the 4th projection 409; Clutch block 400 resets under the elastic force effect of U-shaped spring 601; Promptly be in going-back position, the have toothed portion 202 and driven wheel 300 engagements of feed roll gear 200 are at this moment rotated, and continue paper feeding and operate.
After second control handle, 811 second end plates 408 break away from the 4th projection 409; Before feed roll gear 200 rotated a circle, relay 805 cut off the power supply under the effect of control signal, quits work; Second control handle 811 resets under the elastic force effect of support spring 410, promptly is in going-back position.
When feed roll gear 200 rotated a circle, the 5th projection 206 on the feed roll gear 200 was stopped the rotation under the stopping of the 6th projection 810 on second control handle 811, accomplished the feeding operation of first recording medium P.At this moment, the paper feeding control setup restPoses, and relay 805 waits for that next signal carries out the paper feeding action.
Embodiment six
The structural representation of the paper feeding control setup that Figure 17 and 18 provides for the embodiment of the invention six, the difference of present embodiment and the foregoing description five be, the engaging piece of clutch block 400 401 is replaced with pointed tooth with involute gear tooth.
Similar with embodiment three, driven wheel 300 comprises gear body 301 and linkage gear 302; Linkage gear 302 is captiveed joint with gear body 301; Linkage gear 302 has pointed tooth 303 structures, with the pointed tooth engagement on the clutch block 400.
The clutch block 400 that the implementation of present embodiment will have involute gear tooth changes the clutch block 400 that the end has the pointed tooth structure into, and while corresponding setting on driven wheel 300 has the linkage gear 302 of pointed tooth 303 structures.In the working process, clutch block 400 and linkage gear 302 engagements drive feed roll gear 200 and rotate, turn over hypodontia part 201 after, the have toothed portion 202 and the involute gear tooth engagement of driven wheel body 301 of feed roll gear 200 are rotated, and realize paper feeding.This implementation principle of work is identical with above-mentioned implementation, can effectively reduce the probability of apical tooth, and more effectively pulsation-free engagement.
Embodiment seven
The structural representation of the paper feeding control setup that Figure 19 and 20 provides for the embodiment of the invention seven, the difference of present embodiment and the foregoing description five be, the engaging piece of clutch block 400 401 is replaced with friction lining with involute gear tooth.
Similar with embodiment three, driven wheel 300 comprises gear body 301 and linkage gear 302; Linkage gear 302 is captiveed joint with gear body 301; Linkage gear 302 has friction lining 304, with the friction lining engagement on the clutch block 400.
Like Figure 19 and shown in Figure 20; The clutch block 400 that this implementation will have involute gear tooth changes the clutch block 400 that the end has friction lining 304 structures into, and while corresponding setting friction lining 304 structures on driven wheel 300 are when the engaging piece 401 of clutch block 400 and friction lining 304 structure engages; Driving feed roll gear 200 through friction force rotates; After turning over hypodontia part 201, feed roll gear 200 rotates with the involute gear tooth engagement, realizes paper feeding.This implementation working process is identical with above-mentioned implementation, and this scheme can be avoided the apical tooth situation by actv., and can the pulsation-free transmission, and noise is little, is particularly suitable for the less image forming apparatus of load and uses.
Paper feeding control setup provided by the present invention, can realize effectively one time one separation and recording medium is provided and intermittence provides recording medium.Simultaneously, this paper feeding control setup in the course of the work, the feed roll strength of gear is stable, required propulsive effort is little, so this paper feeding control setup is stable, low energy consumption, low noise.In addition, simple in structure, the easy installation and removal of this paper feeding control setup, actv. has been practiced thrift productive costs.
The embodiment of the invention also provides a kind of image forming apparatus, comprises feed roll at least, the paper feeding control setup that also comprises any embodiment of the present invention and provided, and the feed roll gear in the paper feeding control setup links to each other with feed roll, rotates paper feeding to drive feed roll.Certainly, the structure of image forming apparatus is not limited to feed roll, for example, can comprise device required in other image forming apparatus referring to shown in Figure 3.
Paper feeding control setup among the present invention is releasably attached in the image forming apparatus, and this image forming apparatus can be a chopping machine, also can be facsimile unit, duplicator etc. other the multi-function device of similar functions such as printing function, scan function is equipped with.
Adopt the paper feeding control setup of said structure, solved the existing variety of issue of paper feeding control setup in the prior art, its in the course of the work, stable, power consumption is less, noise is little, and the paper feeding control setup is simple in structure, easy installation and removal, cost are low.Elastic parts in the paper feeding control setup can rotate with the feed roll gear simultaneously; Can in the process of feed roll gear rotation, constantly not stretch and cause its elasticity to reduce by quilt; Thereby influence the stability of paper feeding operation, promptly cause causing the paper feeding failure, for user's use brings convenience.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (16)
1. a paper feeding control setup comprises driven wheel and the feed roll gear that has the hypodontia part, it is characterized in that, also comprises:
Clutch block, said clutch block are arranged on the end face of said feed roll gear and along the setting that radially slides of said feed roll gear, said clutch block is provided with the engaging piece that is used for the driven wheel transmission towards the end of driven wheel;
Control assembly, said control assembly are used to control clutch block along the radially sliding of said feed roll gear, with the driven wheel engagement or separate.
2. paper feeding control setup according to claim 1 is characterized in that, also comprises:
Limit assembly, said limit assembly are fixedly set on the end face of said feed roll gear; Said control assembly is used to contact or break away from the side of limit assembly, realizes applying or remove spacing to the rotation of feed roll gear.
3. paper feeding control setup according to claim 2 is characterized in that,
Be formed with through hole on the end face of said feed roll gear, said clutch block is chimeric and be slidingly arranged in the said through hole, so that along the setting that radially slides of feed roll gear.
4. paper feeding control setup according to claim 3 is characterized in that control assembly comprises:
First drive part, first partial sum first control part that resets, wherein,
First end of said first drive part fixedly installs with respect to said feed roll gear; Second end of said first drive part is captiveed joint with said clutch block; Be provided with first elastic part between first end of said first drive part and second end; Be used for along replacing direction applying the power of replacing to clutch block, wherein, said to replace direction be clutch block along the feed roll gear radially and away from the direction of feed roll gear center;
Said first reset portion is divided with respect to the movable setting of said feed roll gear; Said first resets partly is used for applying reset force along the direction that resets to said clutch block; Wherein, said reset direction for drive clutch block along the feed roll gear radially and near the direction of feed roll gear center;
Said first control part comprises first controller and first control handle at least, and said first control handle action of said first controller drives is to apply or to remove the restriction to the said power of replacing.
5. paper feeding control setup according to claim 4 is characterized in that,
First end of said first drive part is the fixed end that is fixedly installed on the S. A. of said feed roll gear; Second end of said drive part is first projection that is fixedly installed on the side of said clutch block, and the said first elastic part fixed clamp is between said first projection and fixed end.
6. according to claim 4 or 5 described paper feeding control setups, it is characterized in that the said first reset portion branch comprises:
Second projection is fixedly installed on the side that deviates from first projection on the said clutch block, and passes said through hole;
Resetting block is fixedly installed on the side that the feed roll gear deviates from said clutch block, and said resetting block is provided with the cam chute, is used for ccontaining said second projection, with drive and the guiding rotation process in clutch block reset.
7. paper feeding control setup according to claim 6 is characterized in that,
Said first control part also comprises the support that pedestal, hold-down arm and position limit arm constitute, and said first controller is a relay;
The middle part of said first control handle is supported on the hold-down arm; First end of said first control handle is plugged in the spacing hole of position limit arm; Second end of said first control handle is provided with claw and the 3rd projection, is connected with the control handle spring between second end of said first control handle and the pedestal;
Said relay is installed on the said pedestal, is used to control said first control handle and is being parallel to replace in direction and the plane perpendicular to the feed roll gear face around said hold-down arm and swings;
Said claw axially stretches out along said feed roll gear, is used for when first control handle is swung, breaking away from or the contact clutch block, to remove or to apply replacing the restriction of power;
Said the 3rd projection and said limit assembly be along the mutual abutting and spacing of rotation direction of said feed roll gear, and said first control handle swing is so that said the 3rd projections contact or break away from limit assembly, realizes feed roll gear rotary spacing or remove spacing.
8. paper feeding control setup according to claim 2 is characterized in that,
It is right that the end face of said feed roll gear is provided with the slide rail projection, is used for the said clutch block of clamping and guides said clutch block radially sliding along the feed roll gear.
9. paper feeding control setup according to claim 8 is characterized in that,
Control assembly comprises: second drive part, and second partial sum second control part that resets, wherein,
Said second drive part is provided with respect to said feed roll gear is movable; Said second drive part is used for applying the power of replacing along replacing direction to clutch block; Wherein, said to replace direction be clutch block along the feed roll gear radially and away from the direction of feed roll gear center;
Said second reset the part first end captive joint with the feed roll gear; Said second reset the part second end captive joint with said clutch block; Said second resets is provided with second elastic part between first end partly and second end; Be used for applying reset force to said clutch block along the direction that resets, wherein, said reset direction for drive clutch block along the feed roll gear radially and near the direction of feed roll gear center;
Said second control part comprises second controller and second control handle at least, and said second control handle action of said second controller drives is to apply or to remove the restriction to said reset force.
10. paper feeding control setup according to claim 9; It is characterized in that: said limit assembly is to be fixedly installed on the end face of said feed roll gear and five projection of said slide rail projection to a relative side; Said second control handle is provided with the 6th projection corresponding to the position of said the 5th projection; Said the 6th projection, realizes rotate spacing of feed roll gear or removes spacing along the feed roll gear moves radially time contact or break away from the side of the 5th projection with second control handle.
11. paper feeding control setup according to claim 10 is characterized in that: the right height of said slide rail projection is less than the height of said the 5th projection.
12., it is characterized in that according to the arbitrary described paper feeding control setup of claim 9 to 11:
Said second control part also comprises fixed mount, and said second controller is a relay, and the said second control handle two ends are provided with first end plate and second end plate, and said second end plate is as said second drive part;
Said second drive part also comprises the 4th projection that is fixedly installed on the clutch block;
Said relay is installed in the said fixed mount; Said relay comprises a stretch; One end of said stretch is captiveed joint with said first end plate; With at the relay attracting state through shrinking said stretch, and drive second control handle by first end plate and move and realize that said second end plate applies the power of replacing to said clutch block and limits the said second reset portion branch simultaneously and apply said reset force, and remove restriction said reset force in the relay disengaged position.
13. paper feeding control setup according to claim 12 is characterized in that:
Said second reset the part first end be the S. A. of feed roll gear; Said second reset the part second end be the fixed projection on the clutch block; Said second elastic part is the U-shaped spring, and fixed cover is located on the S. A. of said feed roll gear, captives joint with said fixed projection in the end of said U-shaped spring; Be used to apply said reset force, drive clutch block and move along the direction that resets.
14. paper feeding control setup according to claim 1 is characterized in that: said engaging piece is involute gear tooth, pointed tooth or friction lining.
15. paper feeding control setup according to claim 14 is characterized in that: said driven wheel comprises gear body and linkage gear; Said linkage gear is connected with said gear body-fixed; Said linkage gear has pointed tooth structure or friction lining, with pointed tooth or the friction lining engagement on the said clutch block.
16. an image forming apparatus comprises feed roll at least, it is characterized in that: also comprise the arbitrary described paper feeding control setup of claim 1-15, the feed roll gear in the said paper feeding control setup links to each other with said feed roll.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210027764.0A CN102583075B (en) | 2012-02-08 | 2012-02-08 | Paper feeding control device and imaging equipment |
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| CN201210027764.0A CN102583075B (en) | 2012-02-08 | 2012-02-08 | Paper feeding control device and imaging equipment |
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| CN107247395A (en) * | 2017-06-20 | 2017-10-13 | 北京中恒复印设备集团有限公司 | Stop bit transmission mechanism and carbon starch cylinder |
| CN107639875A (en) * | 2016-07-20 | 2018-01-30 | 宝山钢铁股份有限公司 | A kind of forming machine timing gear protection device |
| CN111025872A (en) * | 2019-12-30 | 2020-04-17 | 贵州云侠科技有限公司 | Selenium drum of laser printer |
| JP2021021461A (en) * | 2019-07-30 | 2021-02-18 | シンフォニアマイクロテック株式会社 | clutch |
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Effective date of registration: 20190430 Address after: 519060 Central District A, Building 3, 01, 3883 Zhuhai Avenue, Zhuhai City, Guangdong Province Patentee after: ZHUHAI PANTUM ELECTRONICS Co.,Ltd. Address before: 519075 No. 63 Mingzhu North Road, Xiangzhou District, Zhuhai City, Guangdong Province Patentee before: Zhuhai Saine Printing Technology Co.,Ltd. |
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