JPH0757656B2 - Left-right position control device for sheet-fed printing press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a sheet-fed printing press according to a paper size, in which a paper fed from a stacking device to a differential plate by a paper feed roller and a paper feed tape is made to have a paper size. The present invention relates to a left and right sheet feeding position regulating device that regulates a position in the left and right direction by a positioned lateral needle device.

[Conventional technology]

In the sheet-fed printing press, the sheets stacked on the sheet stacker of the sheet feeding device are sucked one by one from the upper layer by the stacking device and transferred to the front, and captured by the rotating upper and lower paper feed rollers. After being sent out onto the feeder board, it is sent out onto the difference plate by the paper feed tape on the feeder board.
Then, the front end of the slip plate is brought into contact with the front end of the fed paper, and the front end is aligned with the top and bottom ends. A lateral needle device, which is a main part of the paper feed left-right position regulating device for aligning the registration, is provided. The paper that is registered by the front needle and the horizontal needle device is transported while being clamped at the edge of the paper by a swing device or a paper feed copper nail, and transferred while being held by the print copper nail. Printing is performed on the paper surface.

In such a paper feeding operation to the printing device, it is necessary to move the position of the lateral needle device in the paper width direction for changing the paper size or for registration at the start of printing. Loosen the fixing screw of the needle to directly grasp the horizontal needle device itself by hand to move it while visually observing the scale plate, or rotate the manual needle without holding the horizontal needle device by hand to move the rack. And the side needle device was moved via the pinion.

In addition, the horizontal needle device is usually provided with a pair of symmetrical left and right devices, the left one is used for front printing, and the right one is used for back printing. Between the horizontal needle devices, that is, between the feeder board and the difference plate in the front direction, there are a plurality of plate-shaped paper guides arranged in parallel in the paper width direction, and some of them are aligned with the movement of the horizontal needle device. It is designed to be fitted and removed.

[Problems to be solved by the invention]

As described above, in the past, when changing the paper size, etc., it is necessary to reach for the inside of the frame to carry out all of the above-mentioned screwing of the lateral needle device, handle operation, and operation of the separately provided fine adjustment screw. In addition, some of the above paper guides had to be attached and detached inside the frame, so the operability was extremely poor. Further, although the position of the lateral needle device is required to have a high accuracy of 0.01 to 0.05 mm, in reality, the position accuracy is not clearly indicated, so that the adjustment becomes extremely difficult.

[Means for solving problems]

In order to solve such a problem, in the present invention, a lateral needle device supported by a stay connecting left and right frames so as to be movable in the paper width direction, and drive means for moving the lateral needle device in the paper width direction. A detection and display means for detecting and displaying the position of the lateral needle device, and a paper guide having one end fixed to the lateral needle device and extending along the stay, the lateral needle device being moved by the movement of the lateral needle device. A paper guide is provided which is movable in the paper width direction at one end fixed to the paper and has a length in the paper width direction of a portion supporting the paper that is expandable and contractible and eliminates a gap on the side of the lateral needle device.

[Action]

The paper that goes from the feeder board through the paper guide to the difference plate can be registered in the left-right direction by the lateral needle device.
When the drive means is operated when changing the paper size,
The lateral needle device moves in the paper width direction to correspond to the paper size. The amount of movement of the lateral needle device is detected and displayed by the detection display means.

Then, when the horizontal needle device moves, the paper guide moves in the paper width direction to correspond to the paper size, and there is no gap on the side of the horizontal needle device.

〔Example〕

1 to 10 show an embodiment of a paper feed left / right position regulating device according to the present invention. FIG. 1 is a plan view thereof, FIG. 2 is a developed vertical sectional view thereof, and FIG. 3 is AA of FIG. Sectional view, FIG. 4 is an enlarged sectional view taken along line BB in FIG. 1, FIG. 5 is a sectional view similarly showing the paper guide in a contracted state, and FIG. 6 is a partially cutaway plan view of the screw shaft rotation driving means, FIG. The figure is also a front view, and FIG. 8 is a plan view of the paper guide shown for explaining the expansion and contraction state of the paper guide.
The figure is an enlarged plan view of the main part of the paper guide, and FIG. 10 is a schematic side view of the paper feeding device and the entire printing unit. In the figure,
The paper feeding device 1 is provided with a paper stacking base 3 which is provided between a pair of left and right paper feeding frames 2 so as to be able to move up and down. The paper 4 stacked on the paper stacking base 3 is a horizontal plane of the paper feeding frame 2. A sucking device (not shown) provided between the members sucks the sheets one by one and sends them out to the front. On the other hand, the printing unit 5 includes a plate copper 6, a rubber copper 7, which are in contact with each other and rotate in a direction indicated by an arrow in the drawing.
And the press copper 8 are provided, and the adjacent printing unit 5 is provided.
A double-passage copper 9 is disposed between the pressed coppers 8.

A paper feed roller 10 axially supported between the front ends of the paper feed frames 2.
A plurality of paper feed rollers 11 are pressed against the peripheral surface of the paper to constantly rotate together with the paper feed roller 10, and are configured to catch the leading end of the paper 4 sent by the sucker device and send it forward. . Slightly forward of the paper feed roller 10 and the printing unit 5
The feeder board 12 formed slightly wider than the maximum paper size by a wooden board is installed between the slightly rear and the rear, and the front and rear ends of the feeder board 12 are rotatably mounted in the vicinity of both front and rear ends thereof. Between the pair of rollers 13 and 14, a plurality of paper feed tapes 15 are juxtaposed in the width direction of the feeder board 12 and are stretched so that the upper running portion is attached to the feeder board 12. Reference numeral 15a denotes a plurality of paper feed rollers pressed against each paper feed tape 15, and the paper 4 fed onto the paper feed tape 15 abutting on the feeder board 12 is sandwiched between the paper feed tapes 15 and forward. It is configured to be sent to. In front of the roller 13, a difference plate 16 having substantially the same width as the feeder board 12 is installed at a predetermined angle between the roller 13 and the feeder board 12 at substantially the same inclination angle,
The difference plate 16 is supported by a bracket 17 on the side of the cam shaft 26, which will be described later, as shown in FIG. At the front end of the difference plate 16, a register device for aligning the top and bottom direction of the paper 4 composed of the front register 18 and the like is provided, and the paper sent to the difference plate 16 is obliquely above the front register 18. 4 hold and convey and press copper 8
A swing device 19 for squeezing the claws is arranged.

The paper feed lateral position regulating device according to the present invention is provided between the feeder board 12 and the difference plate 16. That is, at this location, a stay 20 having a flat rectangular cross section is erected so that both ends thereof are supported by a bracket 22 fixed to a frame 21, and a transverse needle device indicated by 23 in its entirety is
By fitting the square holes of the paper tray 24 into the stay 20, the paper tray 24 is movably supported in the paper width direction. This cross needle device 23
Is a cam fixed by a key on a cam shaft 26 that is rotatably driven from the driving side by being hung between bearings 25 between the left and right frames 21.
A cam follower 29 at the free end of the cam lever 28 pivotally supported by the paper tray 24 is attached to a cam surface formed on one end surface of the cam 27. Further, a cam follower of a cam lever free end portion (not shown) is pressed against a cam surface formed on the other end surface of the cam 27 by a tension spring stretched between the cam follower and the cam follower 29. The cam follower 29 is also pressed against the cam surface by this tension spring. A paper receiving roller 30 is rotatably supported on the paper receiving tray 24, and the paper receiving roller 30 is rotated at a predetermined timing by the cam mechanism including a cam 27 as shown by an arrow C in FIG. Is configured to reciprocate by a predetermined angle. Further, a pressing roller 34 is pivotally attached to a free end portion of a roller arm 33 which is loosely mounted on a pivot 32 of a cam lever 28, and the roller arm 33 cooperates with the cam 27 and a spring member (not shown). Is configured to swing so that the pressing roller 34 is pressed against the peripheral surface of the paper receiving roller 30 or separated from the peripheral surface. The timing is such that when the press roller 34 comes into pressure contact with the paper receiving roller 30, the paper receiving roller 30 rotates counterclockwise in FIG. 2, and when the press roller 34 separates, the paper receiving roller 30 rotates clockwise. It is set to rotate to. Reference numeral 35 is a horizontal plate-shaped upper plate fixed to the paper tray 24, and 36 is a holding plate fixed to the roller arm 33 and opened and closed with respect to the upper plate 35 by its swinging. Further, 37 is a gauge provided in the vicinity of the base of the open pressing plate 36.
With this configuration, the paper 4 enters between the upper plate 35 and the pressing plate 36 when the pressing plate 36 is open.
36 is closed, and the rollers 34, 30 are rotated so that the paper 4 is pulled in contact with the gauge 37 and the lateral registration is aligned. that's all,
Although the lateral needle device 23 has been briefly described, the detailed description thereof is omitted because it has substantially the same configuration as the lateral needle device that was filed and published by the applicant of the present application No. 59-121874. . The horizontal needle device 23 is provided with two pairs of symmetrical ones, and one pair is supported at each end of the stay 20, one of which is used during normal front printing, and one of which is used during back printing. The other is configured to be used.

Since the fixing device is fixed to the paper tray 24 of each of the lateral needle devices 23 in the vicinity of the cam shaft 26, the cam shaft is fixed in the screw hole 39 of the screw member 38.
26 and the frame 21 on one side in parallel to the stay 20, and the bearing portion 41 at the center of the stay 20 and the bearing 42 at the end, the screw portions of the screw shaft 40 whose both ends are axially supported are respectively screwed together, A gear 43 is axially mounted on the screw shaft 40 in the vicinity of the bearing plate 41. Further, the bearing plate 41 is fixed with a motor 45 with a speed reducer 44 as a rotation driving means of the screw shaft 40, and a gear 47 meshing with the gear 43 is axially attached to the motor shaft 46. By doing this, when the motor 45 rotates,
The screw shaft 40 rotates via 47, 43, and the screw shaft 40 and screw hole 39
The lateral needle device 23 as a whole is moved in the paper width direction by screwing with and adapted to correspond to the paper size. Symbol in FIG. 6
What is shown by 48 is a rotary encoder as a rotation speed detection member which is connected to the tip of the screw shaft 40 through a coupling 49 and supported by a bracket 50, and is electrically connected to a digital display device (not shown). The rotation speed of the screw shaft 40, that is, the movement amount of the lateral needle device 23 is detected and digitally displayed. Reference numeral 51 denotes a stopper fixedly clamped to a screw shaft 40 whose axial movement is restricted, and restricts the movement limit of the lateral needle device 23 by bringing the female screw member 38 into contact with the stopper. Is configured to set the origin for detecting and displaying.

Further, between the left and right lateral needle devices 23, two sets of paper guides 52 having the central portion of the stay 20 as a boundary are fixed at one end to the lateral needle device 23 side with bolts 53, and the paper guides 52 are The other end is
It is fixed to the center of the stay 20 with a bolt 54. The paper guide 52 is a plurality of paper guides 52 formed in a substantially hexagonal shape in plan view made of a thin steel plate having elasticity or a synthetic resin plate or the like and connected in the paper width direction.
It is configured to expand and contract by being pushed or pulled by the movement of. In addition, the square holes of the paper guide 52
20 penetrates and guides expansion and contraction. Paper guide 52
A groove formed at the front end of the above is engaged with the difference plate 16, and a fixed paper guide 55 is supported between the left and right frames 21 between the paper guide 52 and the roller 13.

The operation of the paper feed left / right position regulating device configured as described above will be described. The sheets of paper 4 stacked on the sheet stacker 3 are sucked one by one by a stacking device and conveyed forward, and are caught by the sheet feed roller 10 and the sheet feed roller 11 and fed onto the sheet feed tape 15. The paper 4 is held by a paper feed tape 15, a paper feed roller 15a, a paper feed brush (not shown), etc.
The paper 4 is conveyed onto the paper 12, slides on the paper guides 55 and 52, and heads toward the difference plate 16. In the middle of this, the leading end of the paper 4 enters between the open holding plate 36 and the upper plate 35. At the same time
The presser plate 36 is closed, the presser roller 34 descends, is pressed against the paper receiving roller 30, and the paper receiving roller 30 rotates counterclockwise in FIG. 2, so that the side edge of the paper 4 hits the gauge 37. It is retracted and the left and right directions are aligned. Then, the paper 4 is further slid on the difference plate 16 so that the leading end of the paper 4 hits the front pad 18 to be aligned in the vertical direction, and then the paper is supplied to the press copper 8 by the swing device 19 for printing.

Then, when the paper size is changed, when the motor 45 is rotated by a push button operation or the like from the outside of the frame 21, the screw shaft 40 is rotated by the engagement of the gears 43 and 47, and the female screw member 38. The meter-reading device 23 moves and stops until it contacts the stopper 51. As a result, since the lateral needle device 23 is located at the origin, when the motor 45 is rotated in the opposite direction to the above, the screw shaft 40 rotates and the lateral needle device 23 moves in a direction away from the stopper 51. The rotary encoder 48 directly connected to the screw shaft 40 rotates, and the number of rotations or the amount of movement of the lateral needle device 23 from the origin is digitally displayed. Therefore, when the worker sees the digital display and stops the motor 45 by a push button operation at a position corresponding to the paper size, or stops the motor 45 by automatic control, the horizontal needle device 23 accurately operates in accordance with the paper size. Stop at a certain position. In this case, when the horizontal needle device 23 moves, the paper guide 52 fixed at one end to this
Since it contracts in the paper width direction as shown in FIG. 8, it is not necessary to attach or detach the paper guide, and the paper guide 52 contracts with both ends fixed to the lateral needle device 23 and the center of the stay 20. Therefore, there is no gap on the side of the lateral needle device 23.

The above is the rotation driving means of the screw shaft 40, the motor 45 and the gear.
Although 43 and 47 are illustrated, the rotation driving means by manual operation will be described next. FIG. 11 is a front view of the manual rotary drive means, and FIG. 12 is a side sectional view of the same. In the figure, symbols
What is indicated by 21 is the frame 21 in the printing unit 5 of FIG. 10, and the inclined surface 21a in FIG. 11 corresponds to the inclined surface in FIG. In the figure, frame 21
Inside, a pair of upper and lower brackets 60, 61 are provided to project, and a slightly inclined operation shaft 62 is vertically supported along the frame 21. A lock nut 63 is rotatably screwed into the upper end thread portion of the operation shaft 62, and a knob 64 is fixed with a dowel pin. Further, a collar 65 is attached to the operation shaft 62 adjacently below the bracket 60, and the operation shaft 62 is restricted from moving in the axial direction by the collar 65 and the knob 64. One end of the same screw shaft 40 as in the above embodiment is a bearing provided inside the frame 21.
Although not shown, the other end of the screw shaft 41 is pivotally supported by the bearing 42 of the bearing plate 41 shown in FIG. In the present embodiment, the gears 43 and 47 are not provided, but the rotary encoder 48 is connected to the screw shaft 40 via the coupling 49 as in the previous embodiment. 67 is a bevel gear mounted on the screw shaft 40 adjacent to the bearing 66, and meshes with a bevel gear 68 on the operation shaft 62. Others are the same as the above-mentioned embodiment.

Due to this structure, when the paper size is changed, the lock nut 63 from the outer side of the frame 21 is changed.
When the operating shaft 62 is rotated while the knob 64 is held after being loosened, the screw shaft 40 is rotated by the engagement of the bevel gears 67 and 68, and the lateral needle device 23 is moved. The rotary encoder 48 detects the number of rotations by the rotation of the screw shaft 40 and digitally displays the same as in the above embodiment. Further, the paper guide 52 expands and contracts as the lateral needle device 23 moves, which is also the same as in the above-described embodiment.

In each of the above embodiments, the rotary encoder 48 is illustrated as the rotation speed detection means of the screw shaft 40, but the invention is not limited to this, and a potentiometer, a limit switch, a magnetic scale, or the like may be provided. In addition, the detection result does not necessarily have to be displayed digitally.
In order to accurately position 23, it is desirable to digitally display the detection result using the rotary encoder 48.

〔The invention's effect〕

As is clear from the above description, according to the present invention, in the sheet feeding left-right position regulating device of the sheet-fed printing press, a lateral needle device movably supported in the sheet width direction on the stay connecting the left and right frames, A drive means for moving the lateral needle device in the paper width direction, a detection display means for detecting and displaying the position of the lateral needle device, and a paper guide having one end fixed to the lateral needle device and extending along the stay. By moving the side needle device, one end fixed to the side needle device is moved in the paper width direction, and the length of the portion supporting the paper in the paper width direction is expandable and contractible. By providing a paper guide to be removed, the lateral needle device can be accurately and highly accurately positioned by operating from the outside of the frame, and the paper guide is expanded and contracted by following the movement of the lateral needle device. It corresponds to the size Since it is possible to extend the hand inside the frame and move and fix the horizontal needle device and attach and detach the paper guide, the operability is greatly improved, improving work efficiency and labor. Can be reduced.

Further, by making the length of the paper supporting portion of the paper guide in the paper width direction expandable and contractible, when the horizontal needle device is moved, the paper supporting portion itself expands and contracts, and the paper supporting portion expands and contracts. Since the tip does not move, a moving mechanism for guiding and moving the paper guide is not required, the structure is simplified, and the number of parts can be reduced. Further, since the portion supporting the paper itself expands and contracts, even if the horizontal needle device is moved according to the size of the paper, a concave fitting gap does not occur on the portion supporting the paper, so that the paper is Smooth paper feeding is guaranteed without being caught.

[Brief description of drawings]

1 to 12 show an embodiment of a sheet feeding right / left position regulating device of a sheet-fed printing press according to the present invention, and FIG. 1 is a plan view thereof.
2 is a developed longitudinal sectional view, FIG. 3 is a sectional view taken along the line AA in FIG. 1, FIG. 4 is an enlarged sectional view taken along the line BB in FIG. 1, and FIG. 5 is a sectional view showing the same paper guide in a contracted state. FIG. 6 is a partially cutaway plan view of the screw shaft rotation driving means, FIG. 7 is a front view of the same, FIG. 8 is a plan view of a paper guide shown for explaining the expansion / contraction state of the paper guide, and FIG. FIG. 10 is an enlarged plan view of a main part of the guide, FIG. 10 is a schematic side view of the paper feeding device and the entire printing unit, FIG. 11 is a front view of a screw shaft rotation driving means showing another embodiment of the present invention, and FIG. It is a side sectional view similarly. 20 ... Stay, 21 ... Frame, 23 ... Horizontal needle device, 38 ...
… Female thread member, 40 …… Screw shaft, 43,46 …… Gear, 45 ……
Motor, 48 …… Rotary encoder, 52 …… Paper guide,
62 …… Operation axis, 63 …… Lock nut, 64 …… Knob, 6
7,68 …… Bevel gear.

Claims (1)

[Claims] 1. A lateral needle device movably supported in a paper width direction by a stay connecting left and right frames, drive means for moving the lateral needle device in the paper width direction, and a position of the lateral needle device is detected. And a detection display means for displaying and a paper guide having one end fixed to the lateral needle device and extending along the stay, the one end fixed to the lateral needle device in the paper width direction by the movement of the lateral needle device. Left and right position of the sheet feeding machine of the sheet-fed printing press, characterized in that the length of the portion supporting the paper in the paper width direction is expandable and contractible, and a paper guide is provided to eliminate the gap on the side of the horizontal needle device. Regulatory device.