JPH0641953Y2 - Sheet-fed press feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a feeder for a sheet-fed printing press, and more particularly, it can regulate one end in the left-right direction of a sheet pile to a predetermined position and continuously feed the sheet. It is intended to be able to feed paper piles.

<Prior Art> In a printing operation by a sheet-fed printing press, sheet-pile piled on a paper tray of a feeder through a pallet is sucked one by one from an upper layer by a sucker device and carried out onto a differential plate. Then, the positions of the front end in the transport direction and one end in the left-right direction (left end or right end) are regulated by the front pad and the side needle device, respectively, and then are clamped one by one by the claw of the swing device and supplied to the printing unit. It Then, the image formed on the plate surface on the plate cylinder is transferred to the sheet directly or via the blanket cylinder, and predetermined printing is performed.

FIG. 7 shows the state of the sheet at each part of the feeder, the lateral needle device and the plate cylinder of this type of sheet-fed printing press. In the figure, 1 is a sheet, and in particular, the sheet 1A is in a state of being stacked on a paper stacking base 3 of a feeder 2 via a pallet 4, and the sheet 1B.
Is in the state of setting one end of the paper (the left end with respect to the transport direction in the figure) by the gauge 6 of the lateral needle device 5 provided at the end of the slip plate, and the sheet 1C is placed on the peripheral surface of the plate cylinder 7. The printing plate 8 mounted is in a state of printing.

When the sheet 1A is unloaded from the feeder 2, even if the sheet size changes or the lateral position of the sheet pile shifts, the horizontal needle device 5 can pull in the sheet and bring the edge of the sheet into contact with the gauge 6. Therefore, it is necessary to regulate the position of one end surface in the left-right direction of the sheet piles stacked on the pallet 4 so that the distance between the gauge 6 and the sheet edge is within a predetermined range (for example, about 6 mm) before the drawing. is there.

For this reason, although not shown, a certain type of feeder 2 has a device that automatically regulates the end face position of the sheet pile in the left-right direction. Although there are various types of this device, the device disclosed in Japanese Patent Laid-Open No. 61-145042 has at least one pair of sensors above a sheet pile piled on a pallet on a paper stacking table. These sensors are arranged side by side in the paper width direction (horizontal direction) with a predetermined interval, and both sensors are integrally moved left and right by an operation corresponding to the paper size. Forward and reverse rotation is performed by different signals from these sensors. The engaging means for moving the pallet to the left and right via the driving means is provided. As an operation, both sensors are moved by an operation corresponding to the paper size to position them on both sides of one edge of the sheet which has a correct positional relationship with the lateral needle device. After that, when the paper feeding is started, both sensors generate different signals depending on whether the both ends detect the paper end portion or both do not detect, and these signals cause the driving means to rotate normally or reversely to operate the engaging means. By moving the pallet left and right through the sheet, the sheet is automatically regulated so that the left end or the right end is located exactly between both sensors, and the lateral needle device is in a position where it can be pulled in well, and the lateral needle device Sent to.

Further, the device disclosed in Japanese Examined Patent Publication No. 61-47770, a contact plate for abutting one end surface of the sheet pile in the left-right direction,
A sensor for detecting whether or not the sheet pile is in contact with the plate in a predetermined manner, a means for integrally moving the plate and the sensor to the left and right, and a sensor for hitting the sheet pile to the plate. And a means for moving the sheet pile pallet left and right so as to detect contact. As for the operation, the plate and the sensor are set at a predetermined position by setting the paper size (one end in the left-right direction of the sheet is occupied so that the sheet is drawn in favorably by the horizontal needle device). Move to the desired position) and then start feeding, the pallet moves left and right and the sheet panel is automatically regulated so that it just touches the plate, and the sheet is sent to the horizontal needle device. .

<Problems to be Solved by the Invention> However, the conventional feeder having the above-mentioned automatic regulating device for the end faces in the left-right direction is not provided with the non-stop device. For this reason, it was not possible to feed a plurality of sheet piles without interruption.

Therefore, an object of the present invention is to provide a feeder that can automatically regulate one end of the sheet pile in the left-right direction and can perform non-stop feeding.

<Means for Solving Problems> The reason why the automatic regulation of the end face in the left-right direction and the non-stop feeding are not compatible with each other in the past is not only when the paper size is changed, but also when the sheet is fed, the position shifts in the left-right direction. Therefore, it is considered that the pallet always moves left and right and the non-stop device cannot operate.

Therefore, it should suffice to stop the lateral movement of the pallet during the operation of the non-stop device.

The feeder of the sheet-fed printing press according to the present invention was devised based on the above consideration, and a pallet loaded with sheet piles is mounted on a paper tray so that the sheet can be moved in the left-right direction orthogonal to the discharge direction. Then, in the feeder of the sheet-fed printing press that feeds the sheets to the printing unit via the horizontal needle device while raising the sheet stacker, it is rotatably installed along the horizontal direction above the sheet stacker. A left and right moving means having a screw shaft and a motor for rotating the screw shaft; and a first member installed on a member that moves along the screw shaft by the rotation of the screw shaft to detect one end of the sheet pile in the left and right direction.
Based on the detection signal of the sensor means and the first sensor means, the sheet position adjusting means for adjusting the position of the sheet by moving the pallet on the paper stack in the horizontal direction, and the sheet through the groove of the pallet. A non-stop device for placing a skewer bar inserted on the lower surface of a pile on a cross bar and raising it, and a second sensor for detecting that the skewer bar inserted on the lower surface of the sheet pile is on the cross bar. While the means and the second sensor means are detecting that the skewer bar inserted in the lower surface of the sheet pile is on the cross bar, it is based on the detection result of the first sensor means. And a control unit for stopping the operation of the sheet position adjusting unit.

<Operation> The left and right moving means are operated in accordance with the paper size to set the position of the first sensor means so that the left and right ends of the sheet pile on the pallet have an appropriate positional relationship with the transverse needle device. To do.

When the paper feed is started, the sheet position adjusting means moves the pallet in the left-right direction and automatically regulates the position until the first sensor detects one of the left and right ends of the sheet pile.

When the sheet pile on the pallet decreases as it is fed, insert the skewer bar in the groove of the pallet into the lower surface of the sheet pile, and place the skewer bar on the cross bar of the non-stop device. Raise the pile.

When the cross bar is raised and the second sensor means detects that the skewer bar inserted in the lower surface of the sheet panel is on the cross bar, the control means stops the operation of the sheet position adjusting means,
Stop the pallet from moving left and right.

With the pallet stopped, the paper stack is lowered, a new sheet pile is loaded, then the paper stack is raised, docked with the sheet pile on the non-stop device and the skewer is pulled out.

During this time, the left and right movement of the pallet is stopped, but when the skewer bar is pulled out, the second sensor means detects this and the control means causes
The sheet position adjusting means starts to operate again, and the pallet moves left and right so that the left and right ends of the sheet pile are in proper positions.

Note that the position of the sheet is not adjusted while the sheet pile is placed on the skewer bar, but in this state the sheet pile has already decreased, so the left and right direction due to the tilt during feeding. The positional deviation of the is small, and it falls within the allowable range of the lateral needle device.

<Embodiment> Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

First, the device portion of the feeder for automatically adjusting the positions of the left and right end surfaces of the sheet pile will be described with reference to FIGS. 1 to 3 (a) and (b).

In FIG. 1, a sheet pile A formed by stacking sheets 1 is placed on a flat sheet stacking base 3 via a pallet 4. The paper stacking platform 3 is suspended at four corners by a lifting chain 62, and is manually operated or driven by a motor (not shown) by detecting the upper surface of the sheet pile A to guide rods 11, 12.
It is designed to be lifted up and down by being guided by. More specifically, the paper stacking base 3 is fixed to the blocks 13 and 14 at both left and right end surfaces in the direction perpendicular to the paper carry-out direction, and the blocks 13 and 14 have the guide rods 11 and 12 inserted therethrough. Thus, the paper stacking table 3 moves up and down together with the pallet 4 and the sheet pile A by the blocks 13 and 14 slidingly contacting the inner surfaces of the side frames 15 and 16 and being guided by the guide bars 11 and 12. ing.

Rollers 17 and 18 are provided on the upper surface of the paper loading platform 3, and the pallet 4 mounted on the rollers 17 and 18 can move on the paper loading platform 3 in the left-right direction. That is, the lateral position of the sheet pile A can be adjusted. More specifically, the paper tray 3
The lower surface of the bearing is rotatably supported by bearings 19 and 20 and support members 21 and 22, and a screw shaft 23 is disposed in the left-right direction.
The screw shaft 23 has pawls 26 and 27 extending upward through the cutouts 24 and 25 cut out in the left and right directions at both left and right ends of the paper stacking table 3.
The lower end of the is screwed. Further, the rotational force with respect to the screw shaft 23 is given by a motor 29 fixed to the lower surface of the paper stack 3 by a bracket 28 via gears 30 and 31. Thus, the pawls 26 and 27 move integrally to the left or right along the notches 24 and 25 by the rotation of the screw shaft 23, and one pawl pushes the left end surface or the right end surface of the pallet 4 to move the pallet 4 to the right. The position is adjusted to the left or right.

Although not shown, an electromagnet is embedded in the paper stack 3, and the pallet 4 is attracted and fixed to the paper stack 3 by exciting the electromagnet. Therefore, when the pallet 4 is moved left and right, the electromagnet is deenergized.

The beam 32 is supported on the upper portions of the side frames 15 and 16 at both ends thereof so as to be movable in the left-right direction. The screw shaft 33 is rotatably supported by bearings 34, 35 and support members 36, 37 fixed to the lower surface of the beam 32. The left half of the screw shaft 33 is a left screw and the right half is a right screw. The reverse screw is cut with. The supporting members 38 and 39 are respectively screwed into the left and right screw portions of the screw shaft 33, and each upper end surface is blocked by the block 4.
It is fixed at 0,41. The upper ends of both blocks 40 and 41 are inserted into grooves 42 and 43 provided in the beam 32 along the screw shaft 33, and rotation is blocked by these grooves 42 and 43. Thus, the rotation of the screw shaft 33 causes the support members 38, 39 to rotate.
Move by the same amount along the screw shaft 33 in the direction toward each other or in the direction away from each other.

Further, the rotational force with respect to the screw shaft 33 is given by the motor 45 fixed to the side frame 16 by the base 44 through the gears 46 and 47.

A support plate 38, sensors 49, 50 and an auxiliary blower 51 are suspended from the support member 38, and an auxiliary blower 52 is suspended from the support member 39. The auxiliary blows 51 and 52 blow air into the sheet pile A from both left and right end surfaces.

The contact plate 48 and the sensors 49, 50 detect the left and right end faces of the sheet pile A, and this part will be described with reference to FIG. The contact plate 48 is fixed to the right end surface of a rod 54 whose central portion is supported by the block 53 so as to be movable in the left-right direction. The block 53 is fixed to the lower surface of the support member 38. A spring 55 is fitted to the rod 54 between the contact plate 48 and the block 53,
The spring force of the spring 55 pushes the contact plate 48 to the right. The stopper 56 is fixed to the rod 54 so as to contact the left end surface of the block 53 so as to restrict the rightward movement of the rod 54. The sensors 49 and 50 are fixed side by side in the left-right direction to a support rod 57 that is fixed to the left end surface of the block 53 and projects to the left, and a detector 58 that is fixed to the left end of the rod 54, respectively. It works when facing the lower surface of the. That is, the sensor 49 operates in the state shown in FIG. 3 (a), and both sensors 4 operate in the state shown in FIG. 3 (b).
9,50 works.

In FIG. 1, as a means 59 for moving the screw shaft 33, an actima clamp (trade name) is fixed to the side frame 15 via a stand. The moving means 59 rotates the lever 60 to rotate the lever 60 so that the shaft 61 fixed to the left end surface of the beam 32.
Is a structure for moving the right and left by a predetermined amount. The movement distance at this time is the distance between the position where the sheet pile should be located in the case of the left pull side needle device and the position where the sheet pile should be located in the case of the right pull side needle device. Has become. By moving the screw shaft 33 by an appropriate moving means in this way, the sensors 49 and 50 for detecting the paper edge can be commonly used for pulling left and right.

In addition, the setting plate 48 sets the paper size of the sheet to a control device (not shown), so that the position corresponding to the sheet size from the initial position (the sheet is pulled in favorably by the horizontal needle device). To the position where the left edge of the sheet needed to be occupied)
As the screw shaft 33 rotates, it moves together with both sensors 49, 50. The movement amount is detected and controlled by an encoder (not shown) that detects the rotation amount of the motor 45.

As described above, if the paper size of the sheet is set prior to printing, the contact plate 48 and the sensors 49, 50 move to the positions corresponding to the paper size, and then the screw shaft 23 is rotated to move the pallet 4 leftward. By doing so, the left end face of the sheet pile A is brought into contact with the contact plate 48. When the sensor 49 detects the detector 58, the control device stops the movement of the pallet 4. The controller controls the pallet 4 to move to the left when both the sensors 49 and 50 do not detect the detector 58. Conversely, when the sensors 49 and 50 both detect the detector 58, the pallet 4 moves to the left. The rotation and direction of the motor 29 are controlled so as to move to the right.

Next, the non-stop device part of the feeder is shown in FIG.
This will be described with reference to FIG. However, as shown in FIG. 1, a groove 63 for inserting a skewer bar is formed on the upper surface of the pallet 4 along the paper discharge direction. FIG. 4 is a side view, and FIG. 5 is a view seen from the paper output side.

In FIGS. 4 and 5, the front crossbar 64 of the non-stop device
And the rear Yokoki 65 are lift chains on each side 66, 67, 68, 6
It is suspended by means of 9, and is guided by guide members 70 and 71 to ascend and descend. More specifically, the guide members 70 and 71 are fixed to the inner surfaces of the side frames 15 and 16, and guide grooves or guide rollers that are in sliding contact with the guide members 70 and 71 are provided at the left and right ends of each crossbar 64 and 65. There is.

Beam 72 in the left-right direction on the upper part between the side frames 15 and 16.
, And the shaft 73 is rotatably installed. The shaft 73 is a bearing 74 provided on the side frames 15 and 16,
Support members 76, 77 supported by 75 and suspended by beam 73
Is supported by.

A sprocket 78 is fixed to one end of the shaft 73, and a chain 81 is hung between the sprocket 80 fixed to the shaft of the non-stop motor 79. The motor 79 is installed in a box fixed to the side frame 16. In addition, the sprocket 82, 83 is fixed near the inside of the side frame 15, 16 of the shaft 73, and the chain is fixed to each crossbar 64, 65.
66, 67, 68, 69 are wound around sprockets 82, 83, and a weight 84 is fixed to the tip. Thus, by the rotation of the motor 79, the two crossbars 64 and 65 are moved up and down together. The sprocket 85 in FIG. 5 is for idle.

A micro switch 87 and a U-shaped receiver 88 are provided as a sensor for detecting the insertion of the skewer bar 86 on the cross bar 65 on the paper output side.
And a spring 89 that elastically supports the receiver 88. More specifically, the spring 89 is inserted into the hole 90 provided on the upper surface of the crossbar 65, and the receiving member 88 is put on the crossbar 65 from above the spring 89.
The receiving member 88 has a shape that can be moved up and down with respect to the horizontal member 65, and the moving range is an engagement between a vertically long hole 91 formed in the receiving member 88 and a bolt 92 screwed to the horizontal member 65 so that the vertical position can be adjusted. It is set according to the relationship. Further, a microswitch 87 is fixed to the side surface of the crossbar 65, and a part 93 of the receiving member 88 is cut open laterally to serve as a detector. 94 is an actuator of the micro switch 87,
96 is a paper stop.

Thus, the motor 79 is controlled so that the crossbars 64 and 65 are moved to the pallet 4
After being positioned further downward, the skewer bar 86 is inserted through the groove 63 of the pallet 4 into the lower surface of the sheet pile A, and then the non-stop device is operated to control the motor 79 to raise the cross bars 64, 65, The receiver 88 is lowered by the weight of the sheet pile A.
As a result, the detector 93 of the receiver 88 pushes the actuator 94 of the micro switch 87, so that insertion of the skewer bar 86 is detected.

The detection signal of the micro switch 87 is given to the control device 95, and the control device 95 stops the paper edge detection by the paper edge detection sensors 49, 50 and stops the automatic left and right movement of the pallet 4. However, the control device 95 is constructed so that the pallet 4 can be moved right and left by manually rotating the motor 29 in the forward and reverse directions or manually.

In this state, the paper stacking table 3 is lowered to load a new sheet pile (auxiliary pile), and then the paper stacking table 3 is raised.
Sheet pile (main pile) on skewer rod 86 of non-stop device by adjusting left and right position of pallet 4 by manual operation
And dock it.

Then, when the skewer bar 86 is pulled out, the weight of the main pile is transferred to the pallet 4, so that the detector 94 of the receiver 88 is separated from the operator 94 of the microswitch 87 by the spring force. As a result, it is detected that the skewer bar 86 has been pulled out, and the control device 95 again causes the paper edge detection sensor 4 to respond to the signal from the micro switch 87.
The paper edge detection by 9,50 is started, the motor 29 is rotated in the forward and reverse directions, and the horizontal position adjustment of the sheet pile is performed.

FIG. 6 collectively shows the flow of the above-mentioned operation.

<Advantages of the Invention> According to the feeder of the present invention, it is possible to perform automatic control of the left and right end faces of the sheet pile and non-stop paper feeding.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a paper edge position automatic regulating device portion of a feeder, FIG. 2 is an enlarged view of a paper edge detection sensor portion, and FIGS. 3 (a) and 3 (b) are FIG. 4 is a side view of the non-stop device portion of the feeder, FIG. 5 is a rear view thereof, FIG. 6 is an operation flow diagram, FIG. 7 is a paper stacking table, a lateral needle device, It is a top view showing the state of the paper in each position of the plate cylinder. In the drawing, A is a sheet pile, 3 is a paper loading platform, 4 is a pallet, 23 and 33 are screw shafts, 29 and 45 and 79 are motors, 49 and 50 are sensors, 63 is a pallet groove, and 64 and 65. Is Yokogi, 86 is skewer bar, 87
Is a micro switch, and 95 is a control device.

Claims (1)

[Scope of utility model registration request] 1. A pallet loaded with sheet piles is movably mounted on a sheet stacker in a left-right direction orthogonal to the sheet discharge direction, and the sheet is crossed while raising the sheet stacker. In a feeder of a sheet-fed printing press that supplies a printing unit through a device, a left and right moving means having a rotatable screw shaft installed in a horizontal direction above a paper stacking platform and a motor for rotating the screw shaft, First installed on a member that moves along the screw shaft by rotation of the screw shaft and detects one end of the sheet pile in the left-right direction
Based on the detection signal of the sensor means and the first sensor means, the sheet position adjusting means for adjusting the position of the sheet by moving the pallet on the paper stack in the horizontal direction, and the sheet through the groove of the pallet. A non-stop device for placing a skewer bar inserted on the lower surface of a pile on a cross bar and raising it, and a second sensor for detecting that the skewer bar inserted on the lower surface of the sheet pile is on the cross bar. Means and while the second sensor means detects that the skewer bar inserted in the lower surface of the sheet pile is on the cross bar, based on the detection result of the first sensor means. A feeder for a sheet-fed printing press, comprising: a control unit that does not operate the sheet-sheet position adjusting unit.