JP3798890B2 - Transport device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a conveyance device that conveys a signature folded by a folding machine attached to a rotary printing press or the like.
[0002]
[Prior art]
A rotary printing machine is generally provided with a folding machine for folding a printed web. Some of such folding machines are provided with a conveying device for reducing the conveying speed of the signature before entering the folding process. An example of a conveying device provided in such a folding machine is shown in FIG.
[0003]
8, 111 to 113 are upstream upper rollers, 114 to 116 are upstream lower rollers, 118 is an upstream upper belt, 119 is an upstream lower belt, 121 to 123 are downstream upper rollers, and 125 to 127 are downstream. A lower side roller, 128 is a downstream upper belt, 129 is a downstream lower belt, 131 is a drive shaft, 132 is a disk, and 133 is a stopper.
[0004]
A plurality of upstream upper rollers 111 to 113 are arranged on a support shaft (not shown) so as to be rotatable at predetermined intervals in the axial direction.
A plurality of upstream lower rollers 114 to 116 are arranged on a support shaft (not shown) so as to be positioned on the same vertical plane as the rollers 111 to 113 so as to be rotatable in the axial direction at the same intervals as the rollers 111 to 113. ing.
[0005]
The upstream upper belt 118 is hung on these rollers 111 to 113 so as to communicate between the upstream upper rollers 111 to 113.
The upstream side lower belt 119 is hung on these rollers 114 to 116 so as to communicate with the upstream side lower rollers 114 to 116, respectively, so that the upstream side belt 118 can face each other and sandwich a signature. It has become.
[0006]
A plurality of downstream upper rollers 121 to 123 are rotatably disposed on a support shaft (not shown) so as to be positioned on a vertical plane between adjacent upstream upper rollers 111 to 113, and only the downstream upper roller 121 is provided. It is located upstream from the upstream upper roller 113.
A plurality of the downstream side lower rollers 125 to 127 are rotatably disposed on a support shaft (not shown) so as to be positioned on the same vertical plane as the rollers 121 to 123, respectively, and only the downstream side lower roller 125 is the upstream side lower roller. It is located upstream from 116.
[0007]
The downstream upper belt 128 is hung on the rollers 121 to 123 so as to communicate with the downstream upper rollers 121 to 123, and the upstream portion enters between the adjacent upstream upper belts 118, that is, the upstream portion. Is overlapped with the upstream upper belt 118 in the horizontal direction.
The downstream lower belt 129 is hung on these rollers 125 to 127 so as to communicate with the downstream lower rollers 125 to 127, and the upstream portion enters between the adjacent upstream lower belts 119, that is, the upstream portion Overlaps with the upstream lower belt 119 in the horizontal direction so as to face the downstream upper belt 128 and sandwich the signature.
[0008]
The drive shaft 131 is disposed on the downstream side of the upstream lower roller 113 between the downstream lower rollers 125 to 127.
A plurality of discs 132 are coaxially attached to the drive shaft 131 so as to be positioned between adjacent downstream lower belts 128.
The stopper 133 is erected on the outer peripheral surface of the disc 132 so as to protrude upward from between the adjacent downstream lower belts 128.
[0009]
In such a transport device, the upstream upper belt 118 and the upstream lower belt 119 travel at the same speed, and the downstream upper belt 128 and the downstream lower belt 129 are moved at a predetermined same speed slower than the belts 118 and 119. When the disc 132 is rotated at a peripheral speed with a predetermined cycle slower than the running speed of the belts 128 and 129, the signatures sandwiched between the belts 118 and 119 are conveyed. , 129 at the same time, the end on the front side in the transport direction comes into contact with the stopper 133, and the transport timing is adjusted by the stopper 133, so that the belt 128, 129 is tightened at a predetermined interval. It is designed to be transported.
[0010]
[Problems to be solved by the invention]
In the conventional conveying device as described above, even if the signature conveyed by the belts 118 and 119 on the upstream side is bent with respect to the conveying direction, the stopper 133 is adjusted as a result of adjusting the conveying timing of the signature. Although the bending of the signature is corrected, if the bending of the signature is large, it cannot be corrected only by the adjustment result of the conveyance timing, and the signature is conveyed while being bent by the belt 128, 129 on the downstream side. It was.
[0011]
In view of the above, an object of the present invention is to provide a transport device that can correct the direction of a signature even if the signature that has been transported is greatly bent in the transport direction.
[0012]
[Means for Solving the Problems]
In order to solve the above-described problem, a conveying device according to the present invention is connected to an upstream conveying unit that conveys a sheet-like material, and a downstream side of the upstream conveying unit, and the sheet-like material is connected from the upstream conveying unit. A downstream conveying means that conveys the sheet-like material at a slower speed than the upstream-side conveying means, and a projecting and retracting means that causes the protrusions to appear and retract on a pass line of the sheet-like material at a predetermined cycle, Bend detection means for detecting a bend in the conveying direction of the sheet-like material, and control means for controlling the protrusion protruding and protruding means so as to change the protruding and protruding phase of the protrusion based on a signal from the detecting means; It is characterized by comprising.
[0013]
In the above-described transport device, the bending detection means is provided on the upstream side and the downstream side in the transport direction of the sheet-like material, with the protrusions interposed therebetween.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of a transfer device according to the present invention will be described with reference to FIGS. 1 is a side view showing a schematic configuration thereof, FIG. 2 is a plan view of a main part member of FIG. 1, FIG. 3 is a sectional view taken along the line III-III of FIG. 2, and FIG. FIG. 5 is a block diagram of the control system, FIG. 6 is a time chart of reference pulses and detection signals used for explaining the control method, and FIG. 7 is a flowchart of the control system. .
[0015]
In FIGS. 1 and 2, 1a and 1b are frames, 2 is a table, 11 is a transfer drum, 12 and 13 are upstream upper rollers, 12a and 13a are arms, 12b and 13b are rotating shafts, and 14 to 17 are upstream sides. Lower rollers, 14a to 16a are arms, 14b to 16b are pivot shafts, 18 is an upstream upper belt, 19 is an upstream lower belt, 21 to 24 are downstream upper rollers, 21a to 23a are arms, and 21b and 22b are Rotating shafts 25 to 27 are downstream lower rollers, 26a is an arm, 26b is a rotating shaft, 28 is a downstream upper belt, and 29 is a downstream lower belt.
[0016]
An input shaft of an encoder (not shown) is connected to the rotary shaft of the transfer cylinder 11, and the encoder transmits a signature when the transfer cylinder 11 sends a signature that is a sheet-like material received from the upstream process. It is adjusted to transmit as an electrical signal.
A plurality of upstream upper rollers 12 and 13 are arranged on a support shaft (not shown) so as to be rotatable at predetermined intervals in the axial direction.
The arms 12a and 13a support the support shafts of the upstream upper rollers 12 and 13 respectively at their tips.
The rotating shafts 12b and 13b support the base ends of the arms 12a and 13a, respectively, and can swing the rollers 12 and 13 via the arms 12a and 13a by rotating. .
[0017]
A plurality of upstream side lower rollers 14 to 17 are arranged on a support shaft (not shown) so as to be positioned on the same vertical plane as the rollers 12 and 13 so as to be rotatable in the axial direction at the same interval as the rollers 12 and 13. ing.
The arms 14a to 16a support the support shafts of the upstream lower rollers 14 to 16 at their tips, respectively.
The rotating shafts 14b to 16b support the base ends of the arms 14a to 16a, respectively, and can swing the rollers 14 to 16 via the arms 14a to 16a by rotating. .
[0018]
The upstream upper belt 18 is hung on the transfer cylinder 11 and the rollers 12 and 13 so as to communicate between the transfer cylinder 11 and the upstream upper rollers 12 and 13, respectively, and is connected to the upstream upper belt 18 via the arms 12a and 13a. The tension can be adjusted by swinging the rollers 12 and 13.
The upstream side lower belt 19 is hung on these rollers 14 to 17 so as to communicate between the upstream side lower rollers 14 to 17, and can face the upstream side upper belt 18 to sandwich the signature, respectively. The tension can be adjusted by swinging the upstream upper rollers 14 to 16 via the arms 14 a to 16 a.
[0019]
A plurality of the downstream upper rollers 21 to 24 are arranged in the axial direction on a support shaft (not shown) so as to be positioned on the vertical plane between the adjacent upstream upper rollers 12 and 13. Only on the upstream side of the upstream roller 13.
The arms 21a to 23a support the support shafts of the downstream upper rollers 21 to 23 at their tips, respectively.
The pivot shaft 21b supports the base end of the arm 21a, the pivot shaft 22b supports the base ends of the arms 22a and 22b, and the pivot shafts 21b and 22b rotate to rotate the arms 21a to 21b. The rollers 21 to 23 can be oscillated through 23a.
[0020]
A plurality of downstream side lower rollers 25 to 27 are arranged in the axial direction on a support shaft (not shown) so as to be positioned on the same vertical plane as the rollers 21 to 24.
The arm 26a supports the support shaft of the downstream upper roller 26 at its tip.
The rotating shaft 26b supports the base end of the arm 26a, and can rotate the roller 26 via the arm 26a by rotating.
[0021]
The downstream upper belt 28 is hung on the rollers 21 to 24 so as to communicate with the downstream upper rollers 21 to 24, and the upstream portion enters between the adjacent upstream upper belts 18, that is, the upstream portion. Overlaps with the upstream upper belt 18 in the horizontal direction, and the tension can be adjusted by swinging the upstream upper rollers 21 to 23 via the arms 21a to 23a.
The downstream side lower belt 29 is hung on these rollers 25 to 27 so as to communicate between the downstream side lower rollers 25 to 27, and can face the downstream side upper belt 28 to sandwich the signature, respectively. The tension can be adjusted by swinging the upstream upper roller 26 via the arm 26a.
[0022]
In the present embodiment, the transfer cylinder 11, the upstream upper rollers 12 and 13, the upstream lower rollers 14 to 17, the upstream upper belt 18, the upstream lower belt 19 and the like constitute upstream conveying means, and the downstream The side upper rollers 21 to 24, the downstream side lower rollers 25 to 27, the downstream side upper belt 28, the downstream side lower belt 29, etc. constitute downstream conveying means.
[0023]
As shown in FIGS. 1 to 3, in the vicinity of the downstream side of the downstream lower roller 25, which is in the vicinity of the connecting portion between the upstream side upper and lower belts 18 and 19 and the downstream side upper and lower belts 28 and 29, the bearings 32 a are attached to the frames 1 a and 1 b. , 32b, a support shaft 31 is provided, the shaft end of which is rotatably supported. The support shaft 31 is adjacent to a slow-down pulley 33 that has a stopper 33a on the outer peripheral surface that can protrude upward from between the adjacent downstream lower belts 29, that is, a protrusion that can protrude and retract on the pass line of the signature. A plurality of the support shafts 31 are coaxially mounted so as to be positioned between the downstream lower belts 29.
[0024]
As shown in FIG. 3, below the support shaft 31, there is disposed an adjustment shaft 35 whose shaft ends are supported by the frames 1a and 1b via metal bearings 34a and 34b. The metal bearings 34a and 34b can slide along the axial direction with respect to the frames 1a and 1b and can rotate in the circumferential direction.
[0025]
As shown in FIGS. 3 and 4, a gear 36 is coaxially attached to the adjustment shaft 35 in the vicinity of the frame 1a. The gear 36 meshes with an output gear 37a of an adjustment motor 37 supported and fixed to the frame 1a and an input gear 38a of a potentiometer 38. In addition, a bolt 39 fixedly supported by the frame 1a is screwed coaxially with an end of the adjustment shaft 35 on the frame 1a side.
[0026]
That is, when the adjustment motor 37 is operated and the gear 36 is rotated via the output gear 37a, the adjustment shaft 35 is rotated with respect to the frames 1a and 1b, and the adjustment is performed by the action of the bolt 39 accompanying the rotation. The shaft 35 slides along the axial direction, and the amount of slide movement of the adjustment shaft 35 can be detected based on a signal from the potentiometer 38.
[0027]
On the other hand, as shown in FIG. 3, helical gears 41, 42 are provided coaxially at the end of the adjustment shaft 35 on the frame 2 a side via bearings 40. Reference numerals 42 are integrally connected to each other and are helical lines that are opposite to each other. The helical gear 41 is meshed with a driving source (not shown) via a helical gear (not shown). The helical gear 42 is meshed with a helical gear 43 that is coaxially attached to the end of the support shaft 31 on the frame 2a side via a helical gear (not shown).
[0028]
That is, the power from the drive source is transmitted to the support shaft 31 via the helical gears 41 to 43 and the like to rotate the support shaft 31, thereby rotating the slowdown pulley 33 at a peripheral speed of a predetermined period. In addition, when the adjustment motor 37 is operated to rotate the adjustment shaft 35 and slide the adjustment shaft 35 along the axial direction, the helical gear meshing with the driving source and the helical gear are engaged. Since the meshing position of the helical gear 41 and the meshing position of the helical gear meshing with the helical gear 43 and the helical gear 42 are shifted in the axial direction, the support shaft 31 is moved along with the shift. The rotation cycle is shifted, and the phase of the rotation cycle of the slow-down pulley 33 can be shifted.
[0029]
In this embodiment, the support shaft 31, the bearings 32a and 32b, the slow-down pulley, the stopper 33a, the metal bearings 34a and 34b, the adjustment shaft 35, the gear 36, the adjustment motor 37, the output gear 37a, the bolt 39, and the bearing. 40, helical gears 41 to 43, and the like constitute the protruding and protruding means.
[0030]
As shown in FIGS. 1 and 2, a support shaft 44 whose shaft ends are supported by the frames 1 a and 1 b is disposed near the downstream side of the transfer drum 11. The support shaft 44 is provided with a pair of deviation detection sensors 45 and 46 for detecting a signature. In the vicinity of the downstream side of the upper roller 22 on the downstream side of the table 2, a support shaft 47 having shaft ends supported by the frames 1a and 1b is disposed. The support shaft 47 is provided with a pair of deviation confirmation sensors 49 and 50 for detecting signatures.
[0031]
That is, the deviation detection sensors 45 and 46 are disposed on the upstream side of the slow-down pulley 33, and the deviation confirmation sensors 49 and 50 are disposed on the downstream side of the slow-down pulley 33. In the present embodiment, the deviation detection sensors 45 and 46, the deviation confirmation sensors 49 and 50, and the like constitute a bending detection means.
[0032]
As shown in FIG. 5, the deviation detection sensors 45 and 46, the deviation confirmation sensors 49 and 50, and the output units of the encoder and the potentiometer 38 are input units of a control device 51 having a reference pulse oscillator 52 therein. The reference pulse oscillator 52 oscillates a reference pulse based on a signal from the encoder 53. The output unit of the control device 51 is electrically connected to the adjustment motor 37, and the control device 51 receives the signals from the deviation detection sensors 45, 46 and the deviation confirmation sensors 49, 50 and the reference pulse oscillator. Based on the comparison result with the signal from 52, the adjustment motor 37 is operated so that the signal from the potentiometer 38 has a predetermined value. The potentiometer 38, the control device 51, the reference pulse oscillator 52, the encoder 53, and the like constitute a control means in this embodiment.
[0033]
In such a transport device, the upstream upper belt 18 and the upstream lower belt 19 travel at the same speed, and the downstream upper belt 28 and the downstream lower belt 29 are moved at a predetermined same speed slower than the belts 18 and 19. When the signature from the upstream process is received by the transfer cylinder 11 and sent out while the slowdown pulley 33 is rotated at a peripheral speed of a predetermined cycle slower than the running speed of the belts 28 and 29, the signature is sent. Is sandwiched between the belts 18 and 19 and transferred between the belts 28 and 29. At the same time, the tip part abuts against the stopper 33a of the slow-down pulley 33, and the conveyance timing is adjusted by the stopper 33a. As a result, the belts 28 and 29 are conveyed while being packed at a predetermined interval.
[0034]
In this way, when the signature is conveyed while being pinched at a predetermined interval, the encoder 53 sends a signal to the control device 51 simultaneously with the delivery timing of the signature by the transfer cylinder 11, and the reference pulse oscillator 52 is based on the signal. The reference pulse is oscillating.
[0035]
Here, when the signature is transferred from the upstream side upper and lower belts 18 and 19 to the downstream side upper and lower belts 28 and 29 without being bent with respect to the transport direction, as shown in FIG. The detection signals 45a and 46a from the detection sensors 45 and 46 coincide with the reference pulse signal 52a from the reference pulse oscillator 52 (see the arrow A portion in FIG. 6), and from the deviation confirmation sensors 49 and 50. Since the detection signals 49a and 50a coincide with the reference pulse signal 52a from the reference pulse oscillator 52 (see the arrow a portion in FIG. 6), the control device 51 rotates the rotation period of the slowdown pulley 33, in other words. Then, the driving of the adjustment motor 37 is stopped so that the contact timing of the signature with the stopper 33a is maintained as it is.
[0036]
On the other hand, if the signature is delivered in a state where the signature is bent with respect to the conveyance direction, for example, the tip on the side of the signature deviation detection sensor 46 precedes, the reference pulse The detection signal 46a from the deviation detection sensor 46 precedes the reference pulse 52a from the oscillator 52, and the signal 46a is deviated from the detection signal 45a from the deviation detection sensor 45 (see the portion indicated by the arrow B in FIG. 6). Therefore, the control device 55 determines the signal from the potentiometer 38 so as to change the meshing position of the helical gears 41 to 43 to a predetermined position based on the deviation amount of these signals 45a and 56a. While rotating, the adjustment motor 37 is driven and rotated to slide the adjustment shaft 35 in the axial direction, thereby shifting the rotation period (phase) of the slow-down pulley 33, and the stopper By changing the contact timing with the signature of 3a to advance the contact timing of the stopper 33a with the signature, the detection signals 45a and 46a are made to coincide with the reference pulse 52a (indicated by an arrow in FIG. 6). (See part C), that is, correct the bending of the signature.
[0037]
Further, when the signature is transferred from the upstream upper and lower belts 18 and 19 to the downstream upper and lower belts 28 and 29, even if the bending of the signature is corrected as described above, the signature is bent again for some reason. For example, when the deviation confirmation sensor 49a is bent again with the leading end leading, the detection from the deviation confirmation sensor 49 is detected with respect to the reference pulse 52a from the reference pulse oscillator 52. Since the signal 49a precedes and the signal 49a deviates from the detection signal 50a from the deviation detection sensor 50 (see the arrow b portion in FIG. 6), the control device 55 is based on the deviation amount of these signals 49a and 50a. The adjustment mode is confirmed while confirming with the signal from the potentiometer 38 so that the meshing position of the helical gears 41 to 43 is changed to a predetermined position as described above. The rotation axis 37 is driven and rotated again, the adjustment shaft 35 is slid in the axial direction, the rotation period (phase) of the slow-down pulley 33 is shifted, and the contact timing of the stopper 33a with the signature is changed to change the position of the stopper 33a. By advancing the contact timing with the signature, the detection signals 49a and 50a are made to coincide with the reference pulse 52a (see the portion c in FIG. 6), that is, the bending of the signature is corrected again.
[0038]
That is, the signature of the stopper 33a of the slow-down pulley 33 is changed according to the bending state of the signature before and after the delivery of the signature between the upstream vertical belts 18 and 19 and the downstream vertical belts 28 and 29. The contact timing is adjusted.
[0039]
For this reason, even when the signature is bent greatly when the signature is delivered between the upstream upper and lower belts 18 and 19 and the downstream upper and lower belts 28 and 29, the posture of the signature is surely corrected. be able to.
[0040]
Therefore, according to such a conveying apparatus, a signature can always be conveyed in a straight state with respect to the conveying direction.
[0041]
【The invention's effect】
In the conveying apparatus according to the present invention, the bending detection means detects the bending of the sheet-like material in the conveying direction, and the control means changes the protruding and protruding phase of the protrusion based on the signal from the detecting means. Since the control unit controls the posture of the sheet-like material even when the sheet-like material is largely bent with respect to the conveyance direction when the sheet-like material is transferred between the upstream-side conveyance device and the downstream-side conveyance device. Can be reliably corrected, and the sheet-like material can be always conveyed in a straight state.
[0042]
Further, if the bending detection means is provided on the upstream side and the downstream side in the conveyance direction of the sheet-like material with the protrusions interposed therebetween, the posture of the sheet-like material can be corrected more reliably.
[Brief description of the drawings]
FIG. 1 is a side view showing a schematic configuration of an embodiment of a transport apparatus according to the present invention.
2 is a plan view of a main part member of FIG. 1. FIG.
3 is a cross-sectional view taken along line III-III in FIG.
4 is a cross-sectional view taken along the line IV-IV in FIG. 3;
FIG. 5 is a block diagram of a control system.
FIG. 6 is a time chart of a reference pulse and a detection signal used for explaining a control method.
FIG. 7 is a flowchart of a control system.
FIG. 8 is a side view illustrating a schematic configuration of an example of a conventional transport device.
[Explanation of symbols]
1a, 1b Frame 2 Table 11 Transfer cylinder 12, 13 Upstream upper rollers 14-17 Upstream lower roller 18 Upstream upper belt 19 Upstream lower belts 21-24 Downstream upper rollers 25-27 Downstream lower rollers 28 Downstream side Upper belt 29 Downstream lower belt 31 Support shaft 32a, 32b Bearing 33 Slow down pulley 33a Stopper 34a, 34b Metal bearing 35 Adjustment shaft 36 Gear 37 Adjustment motor 37a Output gear 38 Potentiometer 38a Input gear 39 Bolt 40 Bearings 41-43 are Helical gear 44 Support shaft 45, 46 Deviation detection sensor 47 Support shaft 49, 50 Deviation confirmation sensor 51 Control device 52 Reference pulse oscillator 53 Encoder

Claims (2)

Upstream conveying means for conveying the sheet-like material;
A downstream conveying means that communicates with the downstream side of the upstream conveying means, receives the sheet-like material from the upstream conveying means, and conveys the sheet-like material at a slower speed than the upstream conveying means;
A protrusion protruding and protruding means for protruding and protruding the protrusion at a predetermined cycle on the pass line of the sheet-like material;
Bend detection means for detecting a bend in the conveying direction of the sheet-like material;
And a control unit that controls the protrusions and protrusions so as to change a phase of the protrusions and protrusions based on a signal from the detection unit. The conveying apparatus according to claim 1, wherein the bending detection unit is provided on an upstream side and a downstream side in the conveying direction of the sheet-like material with the protrusion interposed therebetween.

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