CN1923655B

CN1923655B - Delivery device in sheet-fed offset rotary printing press

Info

Publication number: CN1923655B
Application number: CN200610128869XA
Authority: CN
Inventors: 丸山茂; 青木孝畅
Original assignee: Komori Corp
Current assignee: Komori Corp
Priority date: 2005-09-02
Filing date: 2006-08-31
Publication date: 2010-05-12
Anticipated expiration: 2026-08-31
Also published as: EP1762386A3; EP1762386A2; US20070052160A1; CN1923655A

Abstract

A delivery device in a sheet-fed offset rotary printing press includes a vertically movable pile board, suction unit, detection bar, and limit switch. A conveyed sheet is to be placed on the pile board. The suction unit is arranged on an upstream side in a sheet convey direction above the pile board and under a sheet to be conveyed, and has a suction surface to suck the sheet while in slidable contact with it. The detection bar is supported under the suction unit to be movable in a vertical direction and extends in a widthwise direction of the sheet to be conveyed. The limit switch detects movement of the detection bar in the vertical direction.

Description

Conveyer in the sheet-fed offset rotary press

Technical field

The present invention relates to a kind of conveyer in the sheet-fed offset rotary press (sheet-fed offset rotary printing press), described conveyer is set at the pile board upstream on the sheet transport direction, and comprises the attraction unit (suction unit) that is used to reduce paper sheet delivery speed.

Background technology

Conveyer in the sheet-fed offset rotary press is provided with by elevating chain (elevating chain) and slings and the pile board (pile board) of vertical shifting.The paper sheet stacking that has printed is on the supporting plate (pallet) that is installed on the pile board.More specifically, after printing, the grippers (gripper) that is transmitted chain is clamped and the paper from printing element carried is discharged from grippers at the feeding terminal place and be stacked on the supporting plate.In this case, pile up plurality of sheets of paper, pile board automatically moves down at every turn, makes the upper end of paper maintain a standing height place all the time.

When the paper that piles up on the supporting plate reaches a scheduled volume, carry out the usually said paper transfer operation of when paper keeps being stacked on the supporting plate, paper being unloaded from pile board.If carry out the paper transfer operation by stopping printer, then the operating efficiency of printer can reduce.Therefore, normally carry out the paper transfer operation by need not to make printer stop to insert operation (board insertion operation) with regard to executable.Described insertion operation comprises two types operation, that is, carriage (rack) inserts operation and complete stack operation.Insert operation according to carriage, when piling up the predetermined quantity paper, repeatedly carry out cardboard at every turn and insert, make and between the paper that is not also fully become dry after the printing, anti-seal can not take place.According to complete stack operation, pile up whole paper at every turn, owing to anti-seal can not take place, insert so carry out a cardboard.

Carrying out this cardboard insertion device that inserts operation comprises a pair of transmission heap cardboard guides and transmits the heap cardboard, wherein said transmission heap cardboard guides has the U-shaped cross section and can open wide/seal and move on the paper descent path with close to each other and separation, and described transmission heap cardboard is inserted osed top by level and transmits in the heap cardboard guides.

In having the conveyer of above-mentioned configuration, insert in the operation at the platform that piles up fully, when the quantity of the paper that piles up reaches predetermined quantity, transmit heap cardboard guides and be closed, and make paper continue to fall simultaneously, transmit the heap cardboard and insert in the transmission heap cardboard guides with the suitable time limit.The heap cardboard receives and when piling up the paper of falling on it, pile board is moved down into the desired location by push-botton operation or similar operations with fixed speed when transmitting, and the supporting plate that paper sheet stacking transmission heap cardboard thereon is installed is discharged into outside the printer.

Subsequently, empty supporting plate is placed on the pile board, and pile board moves up with fixed speed by push-botton operation.When the upper surface of supporting plate contacted with the lower surface of the transmission heap cardboard that receives paper, the upward movement of pile board can stop.When transmission heap cardboard guides opened wide under this state, the supporting plate support that cardboard has been moved up was piled in the transmission that receives paper.Then, the perpendicular movement of pile board is converted to from push-botton operation and moves downward automatically and change normal transfer operation into.

Insert in the operation at forme posture platform, when transmitting the heap cardboard and receive paper, on it the pile board of stack paper slightly move down a scheduled volume.Be higher than on the supporting plate that two of height of stack paper or four corners (corner) are placed thereon stack paper.Then, till supporting plate moves up when the upper end of corner contacts with the lower surface of the transmission heap cardboard that receives paper.In addition, operation is identical with the situation of above-mentioned complete stack operation.

Insert in the operation at above-mentioned complete stack platform, even also can continue to be sent on the transmission heap cardboard at paper during the paper transfer operation of supporting plate that exchanges stack paper and empty supporting plate, if and pile board moves up after the paper transfer operation simultaneously. the upward movement spended time of paper transfer operation or heap cardboard, then be stacked on the paper that transmits on the heap cardboard and can become quite high, especially when paper is very thick.

In such pile board device, the transmission heap cardboard guides that transmits the heap cardboard and support it is fixed in vertical direction, makes that they can't vertical shifting or only can the vertical shifting scheduled volume.Therefore, if when being stacked on the height that transmits the paper on the heap cardboard and increasing for above-mentioned reasons, can transmit mistake or printing can stop automatically.For fear of this phenomenon, can reduce print out rate.Yet this can reduce capacity rating.If the speed that moves up of pile board increases, then supporting plate and transmitting pushes away cardboard and runs foul of each other owing to the inertia of the upward movement of following pile board.Therefore, being stacked on the upper end of transmitting the paper on the heap cardboard can upwards push away splicing part (sheet lay) or suction paper wheel (suction wheel) with being out of favour.

As countrmeasure to these problems, Japanese Utility Model number of registration No. 2579171 (prior art list of references 1) proposes a kind of anti-pushing-up device that is used for the pile board device, and described anti-pushing-up device comprises by drive unit drives with the pile board that moves up be used to detect the upward movement limit detector of the limit of the upward movement of pile board.In this device, upward movement limit detector stopped the upward movement of pile board immediately before supporting plate collides transmission heap cardboard.

Yet, in the conveyer that in prior art list of references 1, is proposed, upward movement limit detector only detect pile board a specific part so that its upward movement stop.When after carriage inserts, carrying out complete stack operation, if corner is stayed pile board because of carelessness after being used for the carriage insertion, then corner may upwards push away and make their damages with inhaling paper wheel or allied equipment before upward movement limit detector detects pile board.

Summary of the invention

An object of the present invention is to provide the conveyer in a kind of sheet-fed offset rotary press, corner or the instrument wherein stayed because of carelessness on the pile board will can not damage suction paper wheel or allied equipment.

In order to obtain above-mentioned purpose, the conveyer in a kind of sheet-fed offset rotary press, it comprises: the vertical shifting formula pile board that will place the paper of conveying on it; Attract the unit, described attraction unit is set at the upstream side of the described pile board top and the sheet transport direction of the paper sheet underneath that will carry, and has the suction surface that is used for drawing paper with the paper moving contact time; Detection bodies, described detection bodies are supported on below, described attraction unit to move in vertical direction and to extend on the Width of the paper that will carry; And be used to detect described detection bodies detection of motion device in vertical direction; Wherein said detection bodies moves when the object on the described pile board, and further comprises and be used to drive the actuating device that described pile board moves up, and described actuating device stops when described detecting device detects the motion of described detection bodies.

Description of drawings

Fig. 1 is for schematically showing the lateral plan that is used for the conveyer of sheet-fed offset rotary press according to an embodiment of the invention;

Fig. 2 is the front elevation of the conveyer shown in the displayed map 1 schematically;

Fig. 3 is the planar view of the main portion of the conveyer shown in the displayed map 1;

Fig. 4 A and Fig. 4 B are the front elevation of the main portion of the conveyer shown in the displayed map 1;

Fig. 5 is the amplification front elevation of the main portion of the conveyer shown in Fig. 4 B;

The section drawing that Fig. 6 is intercepted for the line VI-VI along Fig. 5; And

The section drawing that Fig. 7 is intercepted for the line VII-VII along Fig. 5.

The specific embodiment

With reference to Fig. 1 to Fig. 7 the conveyer that is used for sheet-fed offset rotary press according to an embodiment of the invention is described.

Referring to Fig. 1, the conveyer 1 that is used for sheet-fed offset rotary press comprises with a predetermined gap a pair of transmission framework 2 respect to one another.Sprocket wheel 3 is supported transmitting framework 2 by this in the axial direction.A pair of transmission chain 4 forms ring-type between the sprocket wheel (not shown) of sprocket wheel 3 and printing element side.In many group grippers unit 5 (schematically illustrated in Fig. 1) each is included in grippers and the grippers pad that is in line on each grippers bar (gripperbar), and wherein said grippers bar is supported on this between the transmission chain 4 with predetermined space.The paper 6 of clamping and being transferred by grippers unit 5 along with advancing of transmission chain 4 after printing by 5 releases of grippers unit and on sheet transport direction, drop on the upstream side of sprocket wheel 3.

Pile board 7 with four corners being sling by four elevating chains 8 is in electrical motor (not shown) cw/vertical shifting when rotating in the counterclockwise.Smooth rectangular-shaped supporting plate 9 with hole of the crotch (fork) that can insert fork truck (fork lift) or allied equipment is placed on the pile board 7.As shown in Figure 2, have the U-shaped cross section separately and be supported at a pair of transmission heap cardboard guides 10 that sheet transport direction (direction of arrow A and B) go up to be extended supporting plate 9 the upward movement limit near and parallel to each other, their opening is toward each other.This is to transmitting heap cardboard guides 10 by the bar 11a of cylinder 11 (seeing Fig. 4 A and Fig. 4 B) support and parallel motion, and when described transmission heap cardboard guides was driven by cylinder 11, they can be separate or close to open wide or sealing.

Rectangle transmits heap cardboard 12 and is inserted osed top from open front and transmit in the heap cardboard guides 10 and the paper 6 that falls is piled up thereon.The forward edge of the paper 6 that splicing part 13 adjacency fall is suitably to settle paper 6.Be arranged on a little more than the upward movement limit switch 14a that transmits heap cardboard 12 places and be connected to the electrical motor (not shown) that is used for vertical shifting pile board 7.Supporting plate 9 on being placed on the pile board 7 that moves up is during in abutting connection with the contact element of upward movement limit switch 14a, and described electrical motor stops, thereby the upward movement of pile board 7 is stopped.A pair of noncontacting proximity sensor 14b is configured to a little less than upward movement limit switch 14a.Detect the upper surface protrusion of rubber component 7a from pile board 7.Sensor 14b and detection rubber component 7a constitute an anti-pushing-up device.In this configuration, when pile board 7 was moved upwards up to upward movement limit switch 14a and covers before the noncontacting proximity sensor 14b, sensor 14b output transducing signal was to be used in the motor deceleration of vertical shifting pile board 7.

As shown in Fig. 4 A and Fig. 4 B, in paper 6 belows of conveyer 1 under upstream side on the sheet transport direction (direction of arrow B) and conveying, five attract unit 15a to 15e to be in line on the Width (arrow C-D direction: on even keel is perpendicular to the direction of sheet transport direction) of the paper 6 under the conveying.Attract unit 15a to 15e to comprise to have the source of suction of being connected to the attraction band (suction belt) 16 of the suction surface 16a of (intake source) (not shown), wherein said suction surface is used for drawing and holding paper 6 under the moving contact state.When inlet air is supplied to when attracting unit 15a to 15e, clamped by grippers unit 5 and the upper surface of the trailing edge of the paper 6 carried is held by described suction surface with suction surface 16a moving contact the time.Therefore, the motion of the trailing edge of paper 6 is controlled, and paper 6 became before it falls on the pile board 7 and tightens.

The detecting device of the upward movement limit that detects pile board 7 will be described referring to Fig. 3 to Fig. 6.Referring to Fig. 3, two poles (stay) 22 and 23 horizontal-extendings, and axle drive shaft 24 rotatably is supported on between a predetermined gap a pair of subframe 21a respect to one another and the 21b.When the electrical motor (not shown) makes axle drive shaft 24 rotation, attract with 16 on the direction of arrow A with the speed of the delivery speed that is lower than paper 6 through gear 25.

The strut bar 31 and 27 that supports pole 22 and 23 is connected in subframe 21a and the 21b. and two screw shafts 26 rotatably are supported between strut bar 27 and the subframe 21b, their motions in the axial direction are controlled. an end of each screw shaft 26 extends to another subframe 21a side. and the salient that passes subframe 21b when screw shaft 26 attracts

unit

15a, 15b, 15d and 15e to move on the direction of arrow C and D with the manual mode cw with when being rotated widdershins.

S. A. 28 rotatably is supported between described a pair of subframe 21a and the 21b.When S. A. 28 rotated on cw and anticlockwise direction by the electrical motor (not shown), subframe 21a and 21b can be with respect to transmitting framework 2 in the miniature gears 29 and the tooth bar (not shown) that moved on the direction of arrow A and B on the two ends that axially are installed on S. A. 28.

A pair of emergency situation limit switch 30 (detecting device) is set at two end side on the Width of the paper 6 that will carry.Limit switch 30 is connected to pole 22 by strut bar 27 and 31 respectively.When limit switch 30 detects an object (for example staying corner or instrument on the pile board 7), the electrical motor (not shown) of pile board 7 vertical shifting can be stopped, thereby the upward movement of pile board 7 is stopped.Be connected to pole 22 with the splicing part 32 of suitably settling paper 6 and on the direction of arrow C and D, extend in abutting connection with falling the tail end that transmits the paper 6 on the heap cardboard 12.Splicing part 32 has many air extractor vent 32a.Alternatively, limit switch 30 can only be arranged on an end side on the sheet transport direction of grippers unit 5.

As shown in Figure 4A and 4B, be supported on corresponding to pole 22 belows that attract the part between unit 15a and the 15e at the length elongated test bar 33 (detection bodies) identical or slightly long length that has on the paper width direction with pile board 7.Have two pairs of support portions protruding upward 34 near each end of test bar 33.Each support portion 34 has vertical extent and has the elongated hole 34a of the width that is slightly larger than little axle 40 (load-carrying element) diameter.Therefore, allow test bar 33 to move up sideling in the Width updip of paper.Retainer (dog) 35 is connected to the two ends of test bar 33.As shown in Figure 5, each retainer 35 all has the test section 35a of bending.

First block 37 is connected to four part places of pole 22 lower ends.As shown in Figure 6, the pin 38 that protrudes on the length direction of pole 22 extends from a lateral vertical of each first block 37.As shown in Figure 7, when in the axial direction mobile being controlled of pin 38, second block 39 is supported by pin 38 in rotatable mode.Little axle 40 with flange on the arrow A direction of second block 39 from an end face vertical extent.Four little axles 40 are engaged in four elongated hole 34a of test bar 33.Usually, the weight of test bar 33 supports test bar 33 to be positioned at the top of elongated hole 34a with suspension status.Therefore, support the too small axle 40 of test bar 33 vertical shifting.As shown in Figure 4A and 4B, the test bar 33 that is supported by little axle 40 is set at and attracts unit 15a to 15e below.

The test section 35a of described a pair of retainer 35 that is arranged on the two ends of the test bar 33 that the pole 22 of passing four little axles 40 supported contacts with the actuation part 30a of described a pair of limit switch 30.

The paper sheet stacking operation that explanation is had the conveyer in the sheet-fed offset rotary press of above-mentioned configuration.Referring to Fig. 1, the corresponding heap cardboard 12 that transmits the heap cardboard is placed on the supporting plate 9 on the pile board 7 that has moved down.Subsequently, heap cardboard 7 is moved upwards up to the upward movement limit and begins printing operation.Under this state, the paper 6 that has printed is clamped by grippers unit 5 and is carried by transmission chain 4.Paper 65 is discharged and is fallen from the grippers unit at the feeding terminal place.

The attraction that the paper 6 that falls is attracted unit 15a to 15e at its afterbody with sliding contacting mode becomes when being with 16 to hold and tightens.Because paper 6 is in abutting connection with splicing part 13, so paper 6 is arranged on to be stacked under the appropriate state with its leading edge and transmits on the heap cardboard 12.When the perpendicular movement of pile board 7 is converted into when moving downward automatically, pile up plurality of sheets of paper 6 at every turn, pile board 7 is automatically a small amount of downwards to be moved, and makes the upper end of the paper 6 that piles up keep identical height.

When whole paper 6 are stacked on the heap cardboard 12, the sensor (not shown) detects this state and moving downward of cardboard 7 of heap is stopped. subsequently, cylinder 11 activated and indicates sealing as two dash lines that the long distance among Fig. 4 A and the 4B replaces and transmit heap cardboard guides 10. and transmit heap cardboards 12 and insert to transmit with the suitable timing of the paper 6 that falls and pile in the cardboard guides 10. therefore, the paper 6 that falls is fallen on the transmission heap cardboard 12 and is piled up thereon. at this moment, the moving downward automatically of pile board 7 is converted into manually operated and moves downward. and pile board 7 is moved down into a desired location by push-botton operation. then, for example, the crotch of fork truck is inserted in the hole of supporting plate 9 so that paper 6 and supporting plate 9 are unloaded to outside the printer together.

Subsequently, empty supporting plate 9 is placed on the pile board 7 that has moved down, and pile board 7 automatically moves up to compare higher speed.When the upper end of supporting plate 9 moves up and when piling up the transmission heap cardboard 12 that paper is arranged, sensor 14b detects rubber component 7a.When sensor 14b output detection signal, the electrical motor that is used to roll elevating chain 8 is from transferring low speed at a high speed, makes pile board 7 move up with low speed.Then, when upward movement limit switch 14a detected the upward movement limit of pile board 7, the electrical motor that is used to roll elevating chain 8 stopped and the upward movement of pile board 7 is stopped.Then, transmit heap cardboard guides 10 and open wide, and the transmission heap cardboard 12 that has piled up the paper that falls on it continues to be transferred on the supporting plate 9.When the manual perpendicular movement of pile board 7 was converted into automatic motion, pile board 7 was converted to conventional transmission and automatically moves down.

According to this embodiment, limit switch 14a detects the upward movement limit of pile board 7.Therefore, can prevent that supporting plate 9 and transmission heap cardboard 12 from colliding and, prevent that perhaps the paper 6 that piles up from upwards pushing away splicing part 13 or attraction unit 15a to 15e etc. and making their damages its upwards promotion.

Can't detected position even corner or instrument are left on limit switch 14a, before the test bar 33 that extends on the whole Width of the paper 6 that will carry is detecting supporting plate 9, can detect corner or the instrument of staying on the pile board 7, thereby the upward movement of pile board 7 is stopped.Therefore, can prevent to stay corner on the pile board 7, instrument etc. damages and attracts unit 15 or allied equipment.

At this moment, if corner that stays or instrument in abutting connection with the part of test bar 33, then test bar 33 pivots on the Width of the paper 6 that will carry.Therefore, this is activated by the test section 35a of cooresponding retainer 35 any one the actuation part 30a in the limit switch 30.Where corner that no matter stays or instrument are positioned at, and it can be detected.Therefore, can prevent the corner or the tool damage that attract unit 15 or allied equipment to be left reliably.

When external force acted on test bar 33 mistakenly, as shown in Figure 7, test bar 33 upward pivoted around the pin 38 at conduct pivot center in the direction (upstream side of sheet transport direction) of arrow B.Therefore, can prevent that test bar 33 is damaged.Test bar 33 inserts and also can pivot when transmitting in the heap cardboard guidess 10 will transmitting heap cardboard 12.Therefore, test bar 33 can be configured to make its lower surface to be positioned in the position of below more, makes to detect object on the supporting plate 9 in early days.Transmit the position of piling in the cardboard 12 insertion transmission heap cardboard guidess 10 even test bar 33 protrudes into to make, the insertion that described test bar can not disturb transmission to pile cardboard 12 is yet operated.

In this embodiment, each in two of test bar 33 sides is supported by two pairs of little axles 40.If the bending of elongated test bar 33 etc. does not need to proofread and correct, then each side of test bar 33 can be supported by a pair of little axle 40.The upward movement of pile board 7 stops when limit switch 30 detects the upward movement limit of pile board 7.Alternatively, the operation of whole printer is stopped.

Pin 38 supports second block 39 pivotally.Alternatively, pin 38 is can be by second block 39 fixing and second block 39 is pivoted.Although the employing paper, yet as long as adopt the sheet type object, the present invention can also be effective.

According to the present invention,, before detecting pile board, detection bodies just can detect the member of staying on the pile board even because of carelessness corner or instrument are stayed on the pile board.Therefore, can prevent that the member that attracts the unit to be left on the pile board from damaging.

Claims

1. the conveyer in the sheet-fed offset rotary press is characterized in that, comprising:

To place the vertical shifting formula pile board (7) of the paper of conveying on it;

Attract unit (15), described attraction unit is set at the upstream side of the described pile board top and the sheet transport direction of paper (6) below that will carry, and has the suction surface (16a) that is used for drawing paper with the paper moving contact time;

Detection bodies (33), described detection bodies are supported on below, described attraction unit to move in vertical direction and to extend on the Width of the paper that will carry; And

Be used to detect described detection bodies detection of motion device (30) in vertical direction;

Wherein said detection bodies moves when the object on the described pile board, and further comprises and be used to drive the actuating device (8) that described pile board moves up, and described actuating device stops when described detecting device detects the motion of described detection bodies.

2. device according to claim 1, wherein said detection bodies comprise supported and vertically moving elongated test bar.

3. device according to claim 2, wherein said test bar is supported by a plurality of load-carrying elements (40) on the Width that is arranged on the paper that will carry.

4. device according to claim 3, wherein

Described test bar is set on the Width of the paper that will carry, and has a plurality of elongated hole (34a), and described each elongated hole (34a) forms the ellipse of major axis aligned perpendicular direction, and

Described a plurality of load-carrying element is engaged in the described elongated hole, to hang and to support described test bar.

5. device according to claim 2, wherein said test bar tiltable is moved.

6. device according to claim 4, wherein said elongated hole has the gap with respect to described load-carrying element on Width.

7. device according to claim 1, wherein said detecting device comprises detector switch, and described detector switch is set at an end side on the Width of the paper that will carry and detects motion in the perpendicular movement of at least one end of described detection bodies.

8. device according to claim 1, wherein said detecting device comprises a pair of detector switch, described detector switch is set at two end side on the Width of the paper that will carry and detects the upward movement of two ends of described detection bodies.

9. device according to claim 1, wherein said detection bodies are also can the pivot mode being supported on the sheet transport direction.

10. device according to claim 9 further comprises:

A pair of transmission heap cardboard guides (10), described transmission heap cardboard guides has near the upward movement limit of described pile board along the U-shaped cross section that sheet transport direction is extended, and be configured to parallel to each other so that the opening of described transmission heap cardboard guides toward each other; And

Transmit heap cardboard (12), described transmission heap cardboard is inserted into and is supported on this in the opening that transmits heap cardboard guides,

Wherein said detection bodies is inserted at described transmission heap cardboard and pivots when described transmission is piled in the cardboard guides.

11. device according to claim 9 further comprises:

Pole (22), described pole are supported on between the preset space length pair of frames respect to one another (21a, 21b);

With the block (39) of mode that can pivot by described pole support; And

Axle (40), described axle is supported by described block and supports described detection bodies so that it moves in vertical direction.

12. device according to claim 11 further is included in the pin (38) that is supported by described pole on the length direction of described pole,

Wherein said block is supported by described pin in the mode that can pivot.