CN103252919B - Novel front edge paper feeding device for corrugated case production line - Google Patents

Abstract

The invention discloses a novel front edge paper feeding device for a corrugated case production line. The front edge paper feeding device comprises a paper feeding working platform, an air suction device, a mechanical intermittent driving case and a platform lifting mechanism. A group of paper feeding rubber wheels is arranged on the top of the platform. The air suction device is arranged below the platform; corrugated paper plates are closely attached to the top of the working platform under the action of negative pressure of an air suction case; and when the paper feeding rubber wheels rotate, the corrugated paper plates are conveyed one by one under the action of friction of the paper feeding rubber wheels. The paper feeding rubber wheels are driven to rotate intermittently by the mechanical intermittent driving case; a combined mechanism of a parallel dividing cam mechanism and a gear mechanism is arranged in the driving case; two cam pieces are integrated; a dividing disc and a driving gear are integrated; structure is compact; and driving accuracy is high. The platform lifting mechanism comprises a swing cam and a plurality of arm levers; outline shape or connecting rod length of the swing cam is adjusted by flexible adjustment; and after the linear speed of the paper feeding rubber wheels matches with the linear speed of the paper feeding roller, and the corrugated paper is conveyed to a preset position, the work platform is guaranteed to be lifted, and the corrugated paper is separated from the paper feeding rubber wheels to stop conveying.

Description

The novel front edge paper feeder of corrugated case production line

Technical field

The present invention relates to a kind of front edge paper feeder on corrugated case packages printing production line, refer in particular to the high-speed, high precision paper feeder before the functional units such as corrugated board printing, cross cutting, fluting, belong to corrugated case machinery manufacturing technology field.

Background technology

At present, domestic and international corrugated case production line mainly comprises the functional units such as paper feed part, Printing Department, fluting portion, cross cutting indentation unit, pile portion, each functional unit is arranged on guide rail by process sequences, and transmit power by the gears meshing between each monoblock, realize the synchronous coordination running of a whole set of production line.Paper feed part also can only fit together with die-cutting portion or fluting portion, the circular pressing and cutting machine on Here it is domestic market or groover.Be no matter production line or the unit process equipment of corrugated case, paper feed part is all essential, and paper feeding precision directly determines follow-up printing precision and mould-cutting precision.

Paper feed part, the corrugated board being about to cut out sends carton process equipment below one by one accurately, reposefully to, conventional paper feeder mainly contains three kinds: 1) chain-type, namely sprocket wheel and chain is adopted to promote paper feeding, the shortcoming of this paper feeding mode is inefficiency, and noise is large, and precision is low, paper feeding precision, generally at 3-5mm, can only be applicable to less demanding fruit case.2) push pedal is reciprocating, namely adopts toggle to drive and pushes away cardboard reciprocating motion, push away cardboard and often move one back and forth, releases the undermost a piece of paper of pile and enters subsequent cell, play formula paper feeding after being therefore often called again by corrugated board trailing edge.This mode paper feeding precision can meet common customer requirement, and its shortcoming is that push pedal movement velocity can not be too high, and cannot push for the corrugated paper of warpage.3) leading edge formula paper feeding, namely corrugated board leading edge is alignd with pressing board, and under feed roller drives, corrugated board leading edge is drawn into subsequent cell.This mode paper feeding precision is high, and generally at ± 0.5mm, and paper feeding speed is fast, is high-end print production line accepted standard paper feeding mode in the market.

The front edge paper feed mode of corrugated paper production line, proposed by sun Automation Co., Ltd of the U.S. the earliest, but due to its complex structure, manufacturing cost is high, the market price is expensive, so domestic some corrugated cases machinery factory is according to the paper feeding feature of front edge paper feed, the independent research front edge paper feeder of corrugated paper.Front edge paper feeder mainly comprises the compositions such as workbench, air intake device, driving mechanism and elevating mechanism.Be equipped with paper feeding rubber group (or belt) in workbench, corrugated paper overlays above rubber tire group.Be arranged side by side multiple inlet scoop be connected by pipeline with blower fan below workbench, the orientation of multiple inlet scoop, perpendicular to the paper feeding direction of cardboard, makes inlet scoop place produce negative pressure by blower fan like this, and then can hold cardboard.In order to reduce the wearing and tearing of paper feeding rubber and avoid corrugated board to be destroyed, front edge paper feeder must be furnished with driving mechanism and platform lifting mechanism.The effect of driving mechanism drives rubber tire group to do intermittent movement, mechanical type is divided into drive and driven by servomotor: driven by servomotor setting adjustment easily, motivation structure, crank connecting link driving mechanism, partial gear driving mechanism etc., what wherein driving precision was the highest is intermittent cam mechanism, precise motion is realized by accurate cam contour surface, the mechanism that Sun Company, Inc. of the Ye Shi U.S. adopts, but because the design of cam contour surface is complicated, traditional Cam Motion Principle curve can not ensure paper feeding precision, and difficulty of processing is larger, eccentric adjustment cover must be relied on to reduce mismachining tolerance and the alignment error of centre-to-centre spacing, so the general complete import of high-precision cam drive mechanism.Elevating mechanism is wearing and tearing in order to reduce paper feeding rubber and lifts workbench, but the design of most elevating mechanism is flexible not, lifting the time and lifts distance and can not adjust, bringing a lot of inconvenience to installing and using.

Summary of the invention

The object of the invention is to overcome the deficiencies in the prior art, in conjunction with for many years to research and the front edge paper feed production experience of indexing cam mechanism, for cardboard box mechanical manufacturing enterprise provides a kind of novel front edge paper feeder, its paper feeding precision is higher, operating rate is very fast, not fragile cardboard, can also improve the service life of paper feeding rubber greatly.

In order to realize above-mentioned object, novel front edge paper feeder of the present invention like the prior art, comprises paper feeding platform, air intake device, driving mechanism, elevating mechanism four part, but have employed following technical scheme:

Described driving mechanism is the combined mechanism of parallel graduated cam transmission mechanism and gear drive, and be assemblied in drive case, drive case is fixed on paper feed part framed side wallboard, the power shaft of driving box is supported through framed side wallboard by bearing, and the axle head outside power shaft framed side wallboard is connected by expansion sleeve (or key) and gear, the power of paper feed part mair motor passes to driving box by this gear.In described combination driving box, parallel graduated cam is connected on driving box power shaft, an index dial assembly assembling two row cylinder roller driven members is connected on the dividing spindle in the middle of driving box, the a certain circular disc of index dial is larger than other two panels disk diameter, and this large-diameter circular disc outer rim is processed into initiatively gear wheel, thus index dial and gear joint are integrated.Above casing, two output shafts are equipped with in drive case, each output shaft is connected an identical driven pinion, these two driven pinion simultaneously and initiatively gear wheel engagement, mate to select the suitable active gear wheel number of teeth and the driven pinion number of teeth to ensure by the linear velocity of paper feeding speed and print roller, die cutting roller below.

Casing below paper feeding platform forms air-suction trunk, and the grid above air-suction trunk is provided with a lot of elongated slot window, the grate panel being fixed with also band elongated slot window above of grid; The base plate of air-suction trunk offers the inlet scoop that can be connected with fan induced draught pipe, and can manually or electric push-and-pull air door adjust the size of inlet scoop.

In paper feeding platform, three or four paper feeding wheel shafts are installed, every root wheel shaft is fixed with a lot of paper feeding rubbers at the elongated slot window place of grid and grate panel, all paper feeding rubber tops a little more than the height of grate panel, and are tightly adsorbed on grate panel with by corrugated board under the effect of air-suction trunk wind-force.Two output shafts of intermittent driving case are connected with one end of two paper feeding wheel shafts separately in workbench respectively at the outer yielding coupling of casing, the other end of these two paper feeding wheel shafts is fixed with wheel axle gear by expansion sleeve (or key), each wheel axle gear passes motion to the wheel axle gear being connected in adjacent paper feeding axle stub by the idle wheel of below, the structure of the wheel axle gear of all paper feeding axle stub is completely the same, thus realizes the synchronous intermittent rotary of all paper feeding wheel shafts.

Described parallel graduated cam adopts two panels cam to realize one division motion, and two panels parallel graduated cam is an one-piece parts, thus can avoid mismachining tolerance and the rigging error of separate type cam bit.The design of surface of described parallel graduated cam have employed novel correction constant velocity motion curve of the present invention, the maximum nondimensional acceleration value of this characteristics of motion curve is 5.8, much smaller than the maximum non-dimensional acceleration value 8.0 of tradition correction constant velocity motion curve, be more suitable for high-speed printing lines.

Elevating mechanism comprises oscillating cam assembly and many armed levers composition, and oscillating cam assembly is connected in intermittent driving case by expansion sleeve and is positioned on the axle head of framed side wallboard power shaft.Intermittent driving case side also fixedly mounts a fixed axis, and the round-meshed elevation angle of middle processing is assemblied on fixed axis by bearing supporting; The one end at the elevation angle is connected with cam driven bearing, and meanwhile, this elevation angle end is also provided with a spring, and spring is fixedly connected on spring support by screw, and under spring External Force Acting, cam driven bearing outer ring and oscillating cam assembly wide face moment fit together.The elevation angle other end is connected with spherical plain bearing rod end by bearing pin, spherical plain bearing rod end and adjusting sleeve one end are threaded connection, the other end and another spherical plain bearing rod end of adjusting sleeve are threaded connection, and such two spherical plain bearing rod ends and adjusting sleeve constitute a length-adjustable connecting rod.Be equipped with one in air-suction trunk and lift axle, lift outside axle and stretch out air-suction trunk, and lift axle axle head by pin connect and push rod one end be connected, the push rod other end is connected with spherical plain bearing rod end by bearing pin.Lift in air-suction trunk on axle and multiple driving swing arm is installed, each driving swing arm is bearing in the groove on slide block by cam driven bearing, long connecting rod is fixed with in slide block, the two ends of long connecting rod are all connected with connecting rod one end, right angle by bearing pin, right angle connecting rod right angle is connected on the side plate of air-suction trunk by central pin shaft, the other end of right angle connecting rod is connected with grid rest pad by bearing pin, and above rest pad, fixed bearing grid.Another axle head lifting axle connects by pin the limited block that is connected, and cylinder is fixed on workbench side plate by cylinder block, the piston rod in cylinder and limited block contacts side surfaces, cylinder block also secures a length-adjustable Limit screw simultaneously.

Described oscillating cam assembly is made up of the two disc cam sheets that wide face is completely equal, one disc cam sheet side is processed with two sections of annular grooves, another oscillating cam sheet side is processed with multiple screwed hole, the relative position of two oscillating cam sheets can regulate, and connects be fixed together by two oscillating cam sheets after being adjusted to correct position by screw.

Described spring support is processed with multiple screwed hole, and one of them screwed hole is connected with screw, and spring is connected on this screw.When the tensile force of spring diminishes, screw can be moved on to adjacent distal end screwed hole from original thread hole, increase the tensile elongation of spring, guarantee that the tensile force of spring is enough large.

Described adjusting sleeve is processed with screwed hole, and wherein a sector hole is left-handed, another sector hole is dextrorotation, and two the spherical plain bearing rod end end thread one be connected with adjusting sleeve are left-handed, one is dextrorotation, and such two spherical plain bearing rod ends and adjusting sleeve constitute length-adjustable connecting rod.

The invention has the beneficial effects as follows: parallel graduated cam adopts two panels monoblock type, breach the transmission mode that one division motion will be driven by three cam bits on the one hand, compact conformation, unitary cam sheet is easy to ensure machining accuracy on the other hand, direct assembling just can ensure the installation accuracy of power shaft and dividing spindle centre-to-centre spacing, thus instead of the complicated approach by eccentric bushing adjustment centre-to-centre spacing; Adopt cam contour surface that novel correction constant velocity motion designs when it runs up, there is less maximum acceleration value, the wearing and tearing of cam contour surface and the vibration of index dial can be effectively reduced, thus ensure paper feeding precision; Index dial and driving gear are integrated in one by intermittent driving case, make structure compacter, significantly reduce material and processing charges.Be provided with soft readjustment link in elevating mechanism, the Distance geometry that lifts that can adjust grate panel flexibly lifts the time, easy to operate, can reduce the wearing and tearing of paper feeding rubber to greatest extent.

Accompanying drawing explanation

Fig. 1 is the structural representation after the novel front edge paper feeder confined explosion of corrugated case production line of the present invention.

Fig. 2 is that schematic diagram is looked on the workbench part right side in Fig. 1.

Fig. 3 is the structural representation that another embodiment of Fig. 2 removes right side expansion tightening wheel.

Fig. 4 is intermittent driving case internal structure schematic diagram.

Fig. 5 is the assembling schematic diagram of the outer elevating mechanism of Fig. 1 discontinuous driving box and air-suction trunk.

Fig. 6 is the structural representation of the outer elevating mechanism of air-suction trunk.

Fig. 7 is the structural representation of oscillating cam assembly.

Fig. 8 is the structural representation of elevating mechanism and air intake device in air-suction trunk.

Fig. 9 removes A-A cross-sectional schematic after paper feeding wheel shaft, grid and grid panel in Fig. 8.

Detailed description of the invention

In order to explain technical scheme of the present invention further, below by specific embodiment, the present invention will be described in detail.

The novel front edge paper feeder of corrugated case production line, comprise the elevating mechanism of workbench, air intake device, intermittent driving case, workbench, wherein workbench is substantially identical with existing front edge paper feeder with air intake device, its structure is not described in detail at this, below only its operation principle is described.

Referring to Fig. 1 and Fig. 2, workbench comprises grid 1, grate panel 2, paper feeding wheel shaft I 3, paper feeding wheel shaft II 4, paper feeding wheel shaft III5, paper feeding wheel shaft IV6, paper feeding rubber group 7, wheel axle gear I 8, wheel axle gear II 9, wheel axle gear III10, wheel axle gear IV11, idle wheel I 12, idle wheel II 13, cant board I 53, middle riser 54, cant board II55.Grid 1 and grate panel 2 are all processed with elongated slot window, and grate panel 2 is connected in above grid 1, and the assembling of elongated slot window consistency from top to bottom.All paper feeding wheel shafts are all supported through cant board I 53, middle riser 54, cant board II 55 by bearing, all paper feeding rubbers 7 of workbench are all connected on paper feeding wheel shaft, the axial location of each paper feeding rubber is all positioned at the elongated slot window of grid 1 and grate panel 2, and during paper feeding the top of paper feeding rubber 7 a little more than the upper surface of grate panel 2.Power transmission drives paper feeding wheel shaft II 4 to rotate to wheel axle gear II 9 by wheel axle gear I 8 and idle wheel I 12 by paper feeding wheel shaft I 3, and power transmission is driven paper feeding wheel shaft IV6 synchronous rotary to wheel axle gear IV11 by wheel axle gear III10 and idle wheel II 13 by paper feeding wheel shaft III5.

Workbench can arrange four paper feeding wheel shafts as described embodiments, namely adopts four row's paper feeding rubbers, is applicable to the situation that corrugated board width is larger; Three paper feeding wheel shafts also can be set, namely adopt three row's paper feeding rubbers, be applicable to the situation that corrugated board width is little.

Assembly wheel shaft gear and idle wheel power can be transmitted at feed roller shaft end, also the form of wheel shaft synchronous pulley and Timing Belt can be adopted to transmit power, embodiment is referring to shown in Fig. 3, every root feed roller shaft end is equipped with wheel shaft synchronous pulley 14, wheel shaft synchronous pulley is equipped with Timing Belt 15, in order to keep the expanding force of Timing Belt, the middle below of two synchronous pulleys is provided with tensioner wheel seat 16 and expansion tightening wheel 17.Tensioner wheel seat 16 is processed with two grooves, is connected by screw and is fixed on workbench cant board II 55.Upwards regulate the position of tensioner wheel seat 16, the expanding force of Timing Belt 15 can be increased.

Shown in Fig. 1 and Fig. 8, air intake device comprises air-suction trunk assembly 18, air intake pipe box 19, chute liner 20 and air door 21, air-suction trunk 18 is positioned at the below of workbench, the bottom sealing plate 62 of air-suction trunk 18 has wind inlet, air intake pipe box 19 is connected in wind inlet place corresponding on bottom sealing plate 62 with chute liner 20 by screw, and air intake pipe box 19 is connected with blower fan (not shown); Chute liner 20 to be positioned in the middle of air intake pipe box 19 end face and bottom sealing plate 62 and to form a chute, and air door 21 to insert in chute and manually or electric push-and-pull, when needs increase wind-force, can pull air door 21, the area that reduction wind inlet is blocked.Corrugated board is deposited on grate panel 2, and again due to grid 1 and grate panel 2 offering multiple elongated slot window, like this under wind-force suction function, a bottom corrugated paper is tightly adsorbed on grate panel, and with paper feeding rubber tight contact therewith.During all paper feeding wheel shaft synchronous rotaries, when paper feeding rubber 7 rotates and corrugated paper produce very large force of rolling friction, drive corrugated paper is fed forward.

Shown in Fig. 4 and Fig. 5, in intermittent driving box body 61, be equipped with index dial 25, roller assembly 26, output shaft I 27, output shaft II 28, driven pinion I 29, the driven pinion II30 of power shaft 22, parallel graduated cam 23, dividing spindle 24, band gear wheel.Intermittent driving box body 61 is arranged on wallboard 31 medial surface of printing production line, at wallboard 31, outer and power gear 32 is fixed together power shaft 22, the power of printing production line mair motor passes to power gear 32 by gears meshing, thus by power transmission to the power shaft 22 of intermittent driving case.Parallel graduated cam 23 comprises two panels cam, and two panels cam is processing all-in-one-piece, does not need assembling.When parallel graduated cam 23 turns over a traverse angle θ with power shaft 22, the special-shaped curved section of two cam bits engages with the roller 26 on index dial 25, makes index dial 25 turn over a corresponding minute of angle τ; When parallel graduated cam 23 turns over a 360-θ, the arc section of two cam bits engages with the roller 26 in index dial 25, index dial 25 transfixion.τ is the function of θ, and namely novel correction constant velocity motion function of the present invention, can be converted into dimensionless functional form S (T).Index dial 25 comprises three processing all-in-one-piece disks, and the diameter of outside disk is greater than two other disk diameter.Large diameter disk outer rim is processed into canine tooth wheel disc, and engage with the driven pinion I 29 on output shaft I 27 and the driven pinion II 30 on output shaft II 28, speed ratio is i simultaneously.The output shaft I 27 of intermittent driving case is connected by shaft coupling with the paper feeding wheel shaft III5 in workbench, output shaft II 28 is connected by shaft coupling with paper feeding wheel shaft I 3, like this, the power shaft 22 of gap drive mechanism at the uniform velocity revolves and turns around, output shaft I 27, output shaft II 28, paper feeding wheel shaft I 3, paper feeding wheel shaft II 4, paper feeding wheel shaft III5, paper feeding wheel shaft IV6 drive all paper feeding rubbers 7 simultaneously intermittent rotary i circle.The selection of gear wheel and driven pinion speed ratio i will ensure that the power shaft 22 of intermittent drive mechanism at the uniform velocity revolves in the process of turning around, and the leading edge of a corrugated board is delivered to the position of upper and lower feeding-in roll (not shown) axis one segment distance exceeded in production line.Therefore, when choosing traverse angle θ, also to guarantee that the paper feeding distance of paper feeding rubber exceedes feeding-in roll axis one segment distance.

Output shaft I 27 in described intermittent driving casing also can be processed into one with driven pinion I 29, output shaft I 28 with driven pinion II 30, is namely designed to driven pinion axle.

Nondimensional displacement S (T), the speed V (T) of described novel correction constant velocity motion and acceleration A (T) all adopt B-spline expression-form: $S\left(T\right)=\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{d}_i{N}_{i,k}\left(T\right),$ $V\left(T\right)=\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{d}_i{N}_{i,k}^{\′}\left(T\right),$ $A\left(T\right)=\underset{i=1}{\stackrel{n}{\mathrm{\Σ}}}{d}_i{N}_{i,k}^{\′\′}\left(T\right),$ In formula, T is nondimensional time, d _ifor the control vertex vector of B-spline curves, N _{i, k}(T) be B-spline basic function, the known boundaries condition according to constant velocity motion: during T=0, S=0, V=0, A=0; During T=1, S=1, V=0, A=0, obtain part control vertex.Then to remain unknown control vertex for variable, be optimized for object function so that maximum non-dimensional acceleration value is minimum, try to achieve control vertex vector, thus obtain final novel correction constant velocity motion curve.

Shown in Fig. 1-Fig. 2, Fig. 5-Fig. 9, the elevating mechanism of workbench includes oscillating cam assembly 33, the elevation angle 34, cam driven bearing I35, fixed axis 36, upper spherical plain bearing rod end 37, lower spherical plain bearing rod end 38, adjusting sleeve 39, push rod 40, workbench lift axle 41, drive swing arm 42, slide block 43, long connecting rod 44, right angle connecting rod 45, grill bearing block 46, cylinder 47, cylinder block 48, limited block 49, spring 50, spring support 51.The power shaft 22 of gap drive case is two directions' inputing axle, and namely at wallboard 31, outer and power gear 32 is connected in power shaft 22 one end, and the other end is assembled by expansion sleeve and oscillating cam assembly 33.Gap drive case is also provided with an actionless fixed axis 36, and the round-meshed elevation angle 34 of middle processing is assemblied on fixed axis 36 by bearing supporting; The one end at the elevation angle 34 is connected with cam driven bearing I35, simultaneously, this elevation angle end is also provided with a spring 50, and spring 50 is fixedly connected on spring support 51 by screw, under spring External Force Acting, the cam contour surface moment of cam driven bearing I35 outer ring and oscillating cam assembly 33 fits together, the elevation angle 34 other end is connected with lower spherical plain bearing rod end 38 by bearing pin, lower spherical plain bearing rod end 38 is threaded connection with adjusting sleeve 39 one end, and the other end and the upper spherical plain bearing rod end 37 of adjusting sleeve 39 are threaded connection.Be equipped with a workbench in air-suction trunk 18 and lift axle 41, lift outside axle 41 and stretch out air-suction trunk 18, and lift axle 41 axle head to be connected by pin connection and push rod 40 one end, push rod 40 other end is connected with upper spherical plain bearing rod end 37 by bearing pin, and another axle head lifting axle 41 also stretches out air-suction trunk outward and connects by pin the limited block 49 that is connected.Shown in Fig. 9, lift in air-suction trunk 18 on axle 41 and multiple driving swing arm 42 is installed, each driving swing arm 42 is bearing in the groove on slide block 43 by cam driven bearing II52, be connected by screw locking in slide block 43 and have long connecting rod 44, the two ends of long connecting rod 44 are all connected with right angle connecting rod 45 one end by bearing pin, right angle connecting rod 45 right angle is connected in the cant board I 53 of air-suction trunk 18 by central pin shaft, middle riser 54, on cant board II55, the other end of right angle connecting rod 45 is connected with grid rest pad 46 by bearing pin, rest pad 46 above fixed bearing grid 1.Shown in Fig. 2, cylinder 47 is fixed on workbench side plate 59 by cylinder block 48, the piston rod in cylinder 47 and limited block 49 contacts side surfaces, cylinder block 48 is also threaded connection simultaneously and is equipped with Limit screw 56.

The power shaft 22 of intermittent driving case drives oscillating cam assembly 33 continuously and smoothly to rotate, shown in Fig. 7, the wide bread of oscillating cam is containing two sections of unequal arc surfaces of diameter, when the wide face of oscillating cam by small-diameter circular cambered surface become cam driven bearing I35 that large-diameter circular cambered surface and the elevation angle 34 be connected fit time, the elevation angle 34 is by rotation angle.The rotation at the elevation angle 34, by lower spherical plain bearing rod end 39, adjusting sleeve 38, upper spherical plain bearing rod end 37, drives push rod 40, lifts axle 41 and swing simultaneously.Drive all driving swing arms 42 of lifting on axle 41 are swung an equal angular by the swing of lifting axle 41 simultaneously, and will drive slide block 43 translation.Long connecting rod 44, right angle connecting rod 45, grill bearing block 46, grid 1 and grate panel 2 form parallelogram linkage, slide block 43 translation drives long connecting rod 44 translation, by parallelogram linkage, promotion grid 1 and grate panel 2 are risen, now be placed on corrugated paper above grate panel 2 and all paper feeding rubbers 7 depart from, stop paper feeding.Equally, when the wide face of oscillating cam by large-diameter circular cambered surface become small-diameter circular cambered surface and cam driven bearing I35 fit time, grid 1 and grate panel 2 will be fallen, the corrugated paper be placed on above grate panel 2 contacts with paper feeding rubber 7, the rotation of paper feeding rubber 7, under frictional force effect, corrugated board is sent to paper feed unit below.The power shaft 22 of intermittent driving case often turns around, and grid 1 and grate panel 2 complete and be once elevated, and send a piece of paper plate to paper feed unit, realizes continuous paper feeding.When cylinder 47 acts on, its piston rod promotes limited block 49 and drives to lift axle 41 and rotate simultaneously, what the rotational angle now lifting axle 41 was larger than that oscillating cam large-diameter circular cambered surface produces lifts axle 41 rotational angle, the cam driven bearing I35 at the elevation angle 34 departs from the wide face of oscillating cam, oscillating cam assembly 33 is ineffective, grid 1 and grate panel 2 keep lifting under the effect of rest pad 46, corrugated board and paper feeding rubber 7 keep not contacting, cardboard can not send subsequent cell to, thus realize, every a paper feeding, being applicable to the cardboard that width is larger.Limit screw 56 is assemblied in the screwed hole of cylinder block 48, and end arranges the side that a rubber sleeve 60 withstands limited block 49, make its not with the plunger rod contacts of cylinder 47, thus protection cylinder 47.

Before grid 1 and grate panel 2 lift, must ensure that paper feeding rubber 7 rotates with feeding-in roll synchronous uniform velocity, and ensure that corrugated board has has met and exceeded feeding-in roll axis one segment distance.Shown in Fig. 7, oscillating cam assembly 33 is connected by screw by disc cam sheet I57 and disc cam sheet II58 and is fixed together, disc cam sheet I57 is identical with the external profile surface of disc cam sheet II58, but disc cam sheet I57 is processed with seam and screwed hole, disc cam sheet II58 is processed with through hole and an annular groove, and the through hole of disc cam sheet II58 is sleeved on the seam of disc cam sheet I57.Rotate arbitrary disc cam sheet, change the relative position of two cam bits, then be screwed in the screwed hole on disc cam sheet I57 by two screws through annular groove, disc cam sheet I57 and disc cam sheet II58 is fixed together, now the central angle of the large-diameter circular cambered surface of oscillating cam assembly 33 will be greater than the large-diameter circular cambered surface of disc cam sheet I57 or disc cam sheet II58, what be delayed grate panel 2 and corrugated board like this lifts the time, increases paper feeding distance.

When grate panel 2 lifts, must ensure that corrugated board departs from paper feeding rubber group 7, stop paper feeding.During design oscillating cam assembly 33, increase the diameter design difference of large diameter circular arc and small diameter arc, the rotational angle that push rod 40 and workbench can be made to lift axle 41 becomes large, thus improves the raising height of grate panel 2 and corrugated board.

Described adjusting sleeve 39 outer surface is positive six prisms, the inside is processed with screwed hole, and wherein a sector hole is left-handed, and another sector hole is dextrorotation, the upper spherical plain bearing rod end 37 be connected with adjusting sleeve 39 and lower spherical plain bearing rod end 38 end thread one are left-handed, and one is dextrorotation.Adjusting sleeve 39 is rotated by spanner, the length of connecting rod that in change, spherical plain bearing rod end 37, lower spherical plain bearing rod end 38, adjusting sleeve 39 form, further change push rod 40 and workbench lift the rotational angle of axle 41, and this mode can the raising height of final soft readjustment grate panel 2.

Claims (1)

1. a corrugated case production line front edge paper feeder, comprises paper feeding workbench, air intake device, driving mechanism and platform lifting mechanism, it is characterized in that:

One driving mechanism is the combined mechanism of parallel graduated cam transmission mechanism and gear drive, and is assemblied in drive case, and drive case is fixed on production line wallboard, and driving box is provided with two directions' inputing axle; Parallel graduated cam sheet in parallel graduated cam transmission mechanism is two-piece type, and two index cam sheets are one-piece parts; In index dial, a certain disk diameter is larger than other two disk diameters, and this big diameter disc outer rim is processed into gear wheel;

One platform lifting mechanism, this mechanism comprises oscillating cam assembly and many armed levers, and oscillating cam assembly is connected on the power shaft of driving box, and oscillating cam assembly comprises the identical disc cam sheet of two outer surfaces, two disc cam sheets are fixed together, but fixed position relative can regulate; The link assembly of an adjustable in length is provided with in many armed levers, comprise two spherical plain bearing rod ends and an adjusting sleeve, adjusting sleeve is processed with screwed hole, and wherein a sector hole is left-handed, another sector hole is dextrorotation, two the corresponding spherical plain bearing rod end end thread one be connected with adjusting sleeve are left-handed, and one is dextrorotation.