JP2642935B2 - End face positioning device for sheet pile in feeder - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an apparatus for positioning an end face of a sheet pile in a feeder. More specifically, as a result of the sheet pulled out from the feeder being pulled right or left, the position in the horizontal direction, which is a direction perpendicular to the sheet conveyance direction, can be well regulated by the horizontal needle device. An improved device for positioning the left and right end faces of a sheet pile in a feeder.

<Prior Art> In a printing operation by a sheet-fed printing press, sheets stacked on a sheet stack of a feeder via a pallet are suctioned one by one from an upper layer by a sucker device, and are conveyed to a difference plate.
After the position of the front end in the transport direction and one end (left end or right end) in the left-right direction is regulated by the front contact and the horizontal needle device, the sheets are gripped one by one by the claws of the swing device and supplied to the printing unit. An image formed on one side of the plate cylinder is transferred to the sheet directly or via a blanket cylinder, and predetermined printing is performed.

FIG. 5 is a plan view showing the state of a sheet in each part of a feeder, a horizontal needle device and a plate cylinder of this type of sheet-fed printing press. In the figure, reference numeral 1 denotes a sheet, and in particular, a sheet 1a is a feeder 2.
The sheet 1b is loaded on the paper stacking table 3 via the pallet 4 and the gauge 6 of the horizontal needle device 5 provided at the leading end of the difference plate.
Indicates a state in which the paper edge (the left end in the figure) is being regulated, and the sheet 1c shows a state in which printing is being performed on the printing plate 8 mounted on the peripheral surface of the plate cylinder 7.

Of these, the horizontal needle device 5 extracts this part, and
As shown in the front view from the feeder 2 in the figure, the gauge 6
And a pair of upper and lower rollers 9 and 10 that rotate in the vicinity of.
The sheet 1 has a paper edge (the left end in the figure) at the roller.
The paper edges are aligned by pulling in at 9 and 10 rotations and bringing them into contact with the gauge 6. At this time, the drawing amount of the sheet 1 by the horizontal needle device 5 is generally set to about 5 to 6 mm. Therefore, if the distance between the left and right paper ends of the sheet 1 conveyed to the position of the horizontal needle device 5 and the gauge 6 is about 6 mm, the sheet can be pulled in. If the interval is too large, the sheet end of the sheet 1 cannot be sandwiched between the rollers 9 and 10. If the interval is too small, the sheet is pulled by the rollers 9 and 10 and brought into contact with the gauge 6. The sheet edge of the sheet 1 is bent.

Accordingly, when the sheet 1 is carried out from the feeder 2, the sheet 1 is pulled in by the horizontal needle device 5 and the paper edge is brought into good contact with the gauge 6, so that the distance between the gauge 6 and the paper edge is reduced. It is necessary to position one end face in the left-right direction of the sheet pile loaded on the pallet 4 so as to fall within a predetermined range (for example, about 6 mm described above).

For this purpose, although not shown, the feeder 2 has a device for positioning the left and right end face positions of the sheet pile. This apparatus is available in various forms. In general, a contact plate for contacting one end surface of the sheet pile in the left-right direction, and the sheet pile abuts on the contact plate in a predetermined manner. It has a sensor for detecting whether or not there is.
More specifically, the plate is set at a predetermined position by setting the type (size) of the sheet 1 (in order for the sheet 1 to be drawn well by the horizontal needle device 5, the sheet 1 To the position where one end face in the left-right direction should be occupied) along with the sensor along with the rotation of the screw shaft.

On the other hand, horizontal needle devices in sheet-fed printing presses include those for left pulling and those for right pulling. As shown in FIG. 6, left pulling is a method in which the left end of the sheet 1 is clamped by rollers 9 and 10 and moved to the left so that the left end abuts on the gauge 6 to regulate the position. Conversely, pulling right means a method of restricting the position by holding the right end of the sheet 1 and moving it in the right direction so that the right end abuts on the right end.

Therefore, the feeder of a sheet-fed printing press according to the prior art has two devices for positioning the end face position of the sheet pile as described above in correspondence with the horizontal needle devices for left pulling and right pulling. I have. That is, it has a left pulling device for positioning the left end face position of the sheet pile and a right pulling device for positioning the right end face position. In the positioning device for pulling left, the sheet 1b in the state where the position regulation by the horizontal needle device 5 is completed is on the right side as viewed from the feeder 2, and the positioning device for pulling right is from the sheet 1b. Are also positioned at respective predetermined positions so as to occupy the left side when viewed from the same direction.

Further, the horizontal needle device 5 for both left pulling and right pulling is 1
This is useful when printing on the front and back of a sheet. In other words, if left-hand printing is used when printing the front surface, right-hand printing must be used when printing the back surface. This is because it is necessary to bring the same paper end into contact with the gauge 6 of the horizontal needle device 5 and use this as a reference.

<Problems to be Solved by the Invention> As described above, in the related art, the feeder 2 is provided with two similar end-face positioning devices corresponding to the horizontal needle devices 5 for left pulling and right pulling. However, there is a problem that the number of parts is large and the number of parts is large.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-described problems of the related art, and has as its object to provide a sheet pile end face positioning device in a feeder that can handle a left-hand drawing device and a right-hand drawing device.

<Means for Solving the Problems> The configuration of the present invention that achieves the above object includes a sensor that detects one end in a left-right direction that is a direction perpendicular to the sheet conveyance direction of the sheet pile, and a stacked sheet. Moving means for moving the sheet pile in the left-right direction such that the sheet pile can be pulled into the horizontal needle device from the sheet pile. 1 sheet from paper pile
An end face positioning device for a sheet pile in a feeder configured to be carried out one sheet at a time, comprising: a screw shaft extending in the left-right direction; moving along the screw axis with rotation of the screw shaft; A sensor capable of detecting the position of one end in the left-right direction, a position where the sheet pile should be located in the case of a horizontal needle device for left drawing, and a sheet in the case of a horizontal needle device for right drawing. A moving mechanism for moving the sensor in the left-right direction together with the screw shaft by a distance between the position where the paper pile is to be positioned.

<Operation> According to the present invention having the above-described configuration, the position of the sheet pile in the case of the left-hand drawing device and the position of the right-hand drawing device are determined by the driving of the moving mechanism. In this case, the sheet pile is moved in the left-right direction by a distance from the position where the sheet pile should be located.

<Embodiment> An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a front view showing an end face positioning device according to the present embodiment together with a feeder.

As shown in FIG. 1, a sheet pile A formed by stacking sheets 1 is stacked on a flat sheet stack 3 via a pallet 4. The paper stacking table 3 is suspended at four corners by a lifting chain (not shown), and is guided by guide rods 11 and 12 by manual operation or by motor drive based on detection of the upper surface of the sheet pile A to be moved up and down. I have. More specifically, the left and right end surfaces of the paper stack 3 are fixed to blocks 13 and 14, and the blocks 13 and 14 pass through the guide bars 11 and 12. Thus, the paper stacking platform 3 moves up and down together with the pallet 4 and the sheet pile A by the blocks 13 and 14 sliding on the inner surfaces of the side frames 15 and 16 and being guided by the guide rods 11 and 12. I have.

The pallet 4 has rollers 17, 18 mounted on its lower surface.
Thereby, the sheet pile A can be moved in the left-right direction, that is, the position of the sheet pile A in the left-right direction can be adjusted. More specifically, a bearing 1 is provided on the lower surface of the bed 3.
A screw shaft 23 rotatably supported by the support members 9 and 20 and the support members 21 and 22 and extending in the left-right direction is provided.
23 is screwed with lower ends of claws 26 and 27 extending upward through cutouts 24 and 25 cut in the left and right directions at both left and right ends of the paper stacking table 3. Further, the rotation force on the screw shaft 23 is generated by a motor 29 fixed to the lower surface of the
Is supplied via gears 30 and 31. Thus, the pawls 26, 27 are moved together in the left or right direction or rightward along the cutouts 24, 25 by the rotation of the screw shaft 23, and one of the pawls 26, 27 is moved to the left end face or the right end face of the pallet 4. The pallet 4 is moved leftward or rightward in contact with the pallet.

Although not shown, an electromagnet is buried in the paper stack 3 and the pallet 4 is energized by exciting the electromagnet.
And the pallet 4 is fixed to the paper stack 3. Therefore, when adjusting the position of the pallet 4 in the left-right direction by rotating the screw shaft 23 as described above, the position adjustment is performed after the electromagnet is deenergized.

The left and right ends of the beam 32 are supported on the upper portions of the side frames 15 and 16 so as to be movable in the left and right directions. The screw shaft 33 has bearings 34, 35 and support members 36, 35 fixed to the lower surface of the beam 32.
It is rotatably supported by 37, and has a left screw on the left half and a right screw on the right half. The upper ends of the support members 38 and 39 are screwed to the left and right thread portions of the screw shaft 33, respectively, and the upper end surfaces of the support members 38 and 39 are blocks 40 and 4 respectively.
It is stuck to 1. The upper ends of the blocks 40 and 41 are fitted into grooves 42 and 43 provided on the lower surface of the beam 32 along the screw shaft 33, and the front and rear end surfaces are regulated by the grooves 42 and 43. Thus, the rotation of the screw shaft 33 causes the support members 38, 39
Move along the screw shaft 33 by the same amount in a direction toward or away from each other. The rotational force on the screw shaft 33 is
Power is supplied via gears 46 and 47 by a motor 45 fixed to the side frame 16 by 44. The support plate 38 has a contact plate 4
8. The sensors 49 and 50 and the auxiliary blow 51 are suspended from the support member 39, and the auxiliary blow 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 faces of the sheet pile A.

The plate 48 and the sensors 49 and 50 will be described in further detail with reference to FIG. The abutment plate 48 is fixed to the right end surface of a rod 54 whose center is supported by the block 53 so as to be movable in the left-right direction. A spring 55 is fitted on the rod 54 between the contact plate 48 and the block 53, and the contact plate 48 is pressed rightward in the drawing by the spring force of the spring 55. The stopper 56 is fixed to the rod 54 so as to abut the left end face of the block 53 to restrict the right movement of the rod 54. The sensors 49 and 50 are fixed to the left end face of the block 53 and are fixed side by side to the support bar 57 projecting leftward and are arranged side by side in the left and right direction.
58 operates when they face each other. That is, the sensor 49 operates in the state shown in FIG. 3A, and the sensors 49 and 50 operate in the state shown in FIG. 3B.

As shown in FIG. 1, in this embodiment, a moving mechanism 59, which is an Actima clamp (trade name), is fixed to the side frame 15 via a base 66. When the moving mechanism 59 rotates the lever 60, the shaft 61 fixed to the left end surface of the beam 32 moves in the left-right direction. The moving distance at this time depends on the position where the sheet pile A should be located in the case of the left-handed horizontal needle device and the sheet-sheet pile A in the case of the right-handed horizontal needle device.
Is the distance from the position to be located. That is, FIG. 1 shows a state of right pulling, but in the case of left pulling, the beam 32 and the bearing 3 are rotated by turning the lever 60.
4, 35, screw shaft 33, this plate 48, auxiliary blowing 51, 52 and sensor 49,
50 and the like are integrally moved to the right in FIG. In addition,
By setting the type (size) of the sheet 1, the contact plate 48 is moved from an initial position to a predetermined position (in order for the sheet 1 to be drawn well by the horizontal needle device 5, the sheet 1 Until the left end face is to be occupied), it moves together with the sensors 49 and 50 as the screw shaft 33 rotates. The movement amount at this time is motor 4
5 is detected by an encoder (not shown) that detects the amount of rotation.

FIGS. 4 (a) and 4 (b) are diagrams showing the extracted actima clamp. As shown in both figures, this actima clamp is rotated
62 rotates to move the concentric sleeve 63 fitted in the cam portion 62 in the left-right direction. That is, as shown in detail in FIG. 4 (b), the cam portion 62 has a notch portion 64 in which a groove inclined with respect to a linear groove is continuous. A pin 65 protruding from the outer peripheral surface of the sleeve 63 is fitted. Therefore, if the left end of the shaft 61 is fixed to the sleeve 63, the shaft
61 can be moved left and right.

In this embodiment, if the type of the sheet 1 is set prior to printing, the screw shaft 33 is rotated by the driving of the motor 45 to return the support members 38 and 39 to the initial position, and then to a predetermined position. Moving. After that, screw shaft 23 is
Is rotated, and the pallet 4 is moved to the left via the lever 27 to bring the left end face of the sheet pile A into contact with the plate 48. When the sheet pile A comes into contact, the contact 48 moves leftward against the spring force of the spring 51, but the sensor 49
When the state of 58 is detected (the state shown in FIG. 3A), the movement of the pallet 4 is stopped. As a result, the left end face of the sheet pile A is occupied at a position where the horizontal needle device 5 can draw the sheet 1 well. The state in which the sensors 49 and 50 detect the detector 58 (the state shown in FIG. 3B) indicates that the sheet pile A is too far to the left. The state in which the detector 58 is not detected (the state shown in FIG. 1) indicates that the sheet pile A is too close to the right side.

If the sheet 1 is unloaded from the feeder 2 in the state shown in FIG. 3 (a), the horizontal needle device 5 can perform good retraction and position control.

When the sheet pile A is inclined and the left end face is inclined, for example, the relative position of the left end face with respect to the contact plate 48 changes, so that the positional relationship between the sensors 49 and 50 and the detector 58 is changed to the second position. The state is as shown in FIG. 1 and FIG. 3 (b),
When these states are detected by the sensors 49 and 50, the motor 29 is appropriately driven to move the pile 4 in the left-right direction so that the left end face of the sheet pile A is always occupied at a predetermined position. .

On the other hand, for example, when printing on the back side of the same sheet 1 after printing on the front side, it is necessary to change the drawing direction to the horizontal needle device 5, but this can be easily achieved by driving the moving mechanism 59. Is achieved. That is, the beam 32 moves in the left-right direction by the driving of the moving mechanism 59. The amount of movement at this time depends on the position where the sheet pile should be located in the case of the horizontal needle device 5 for left drawing and the position where the sheet pile should be located in the case of the horizontal needle device 5 for right drawing. Is the distance between them. That is, when printing is first performed by rightward pulling, the beam is driven by the driving means 59.
32 may be moved rightward by the amount of movement. With the movement of the beam 32, the plate 48 includes sensors 49 and 50 and the screw shaft 3
It moves by the same amount in the same direction with 3 mag. At this time, the auxiliary blows 51 and 52 also move by the same amount in the same direction.

In the same manner as described above, if the left end face of the sheet pile A is brought into contact with the contact plate 48, the sheet 1 can be pulled in the opposite direction and the position regulation by the horizontal needle device 5 can be performed.

In the above embodiment, the moving mechanism 59 is formed by an actima clamp, but is not limited to this. Beam 32
There is no particular limitation as long as the screw shaft 33 can be moved in the left-right direction via the. Further, in the above embodiment, the screw shaft 33 is moved in the left-right direction via the beam 32, but the screw shaft 33 may be moved directly. Further, the end face position of the sheet pile A is detected by a combination of the contact plate 48 and the sensors 49 and 50. However, the end face position of the sheet pile A can be moved along the screw shaft 33 and the end face position of the sheet pile A is detected. As long as it can be obtained, only the sensor may be used.

<Effects of the Invention> As described above in detail with the embodiments, according to the present invention, one-sided device for positioning the position of one end face in the left-right direction of the sheet pile can cope with left pulling and right pulling. In addition, the structure of the apparatus is simplified, and the number of parts is reduced, and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention together with a feeder, FIG. 2 is an enlarged view showing the contact plate portion extracted and enlarged, and FIGS. 3 (a) and 3 (b) show a sensor and a detector. FIG. 4 (a) is a longitudinal sectional view showing an actima clamp which is a driving means, FIG. 4 (b) is a perspective view showing an extracted cam portion, and FIG. FIG. 6 is a plan view showing the sheet-fed printing press, and FIG. 6 is a front view showing the horizontal needle device. In the drawing, 2 is a feeder, 33 is a screw shaft, 48 is a contact plate, 49 and 50 are sensors, and 59 is a moving mechanism.

Claims (1)

(57) [Claims] 1. A sensor for detecting one end of a sheet pile in the left-right direction, which is a direction perpendicular to the sheet conveying direction, and a position at which a sheet can be drawn from a stacked sheet pile into a horizontal needle device. Moving means for moving the sheet pile in the left-right direction so that the horizontal needle device can retract the sheet,
In a sheet pile end face positioning device in a feeder configured to take out sheets one by one from a sheet pile, the screw shaft extending in the left-right direction and the screw shaft are rotated with the rotation of the screw shaft. A sensor that can move along and detect the position of one end of the sheet pile in the left-right direction, and the position where the sheet pile should be located and the right And a moving mechanism for moving the sensor in the left-right direction together with the screw shaft by a distance between the position where the sheet pile should be located in the case of the horizontal needle device for the sheet pile in the feeder. End face positioning device.