JP4510747B2 - Sheet-like material transport device - Google Patents

Description

  The present invention relates to a sheet-like material conveying apparatus for replacing sheet-like materials fed one by one from the upstream side in the sheet-like material conveying direction with a nail such as a printing cylinder.

The most typical example of this type of sheet-like material conveyance device is a swing device in a sheet-fed rotary printing press. As this swing device, it is provided between a difference plate to which paper is fed one by one from the paper feeding device and a transfer cylinder of the printing unit, and is fixed to a swing shaft pivoted on left and right frames. Some have a swing arm and a plurality of gripper claws that are provided at the swinging end of the swing arm and are configured by a claw and a claw base and opened and closed by an opening / closing drive. In this swing device, the swing arm is swung in the forward / reverse direction by a predetermined angle by rotating the swing shaft in the forward / reverse direction by a predetermined angle by the cam mechanism, and the gripper device has been conveyed onto the difference plate. It swings between a receiving position where the paper is added and a delivery position where the paper is transferred from the receiving position to the transfer cylinder (see, for example, Patent Document 1).
Utility Model Registration No. 2596351 (paragraphs “0020” to “0022”, FIG. 1)

  In the conventional sheet-like material conveying device described above, since the gripping of the paper is performed by the gripping claw device composed of the claw and the claw base, a claw opening / closing mechanism for opening and closing the claw from the claw base is necessary, and the weight correspondingly Will increase. For this reason, when the moment of inertia of the swing arm is increased, the positional accuracy at the receiving position and the delivery position is lowered, and there is a problem in that a claw is not properly replaced. In addition, since the nail opens when returning from the delivery position to the receipt position, the opened nail advances on the paper conveyance path, and the bottom side of the paper to be conveyed is rubbed with the open nail in place of the nail of the transfer cylinder. As a result, there was a problem that the paper was scratched or rubbed.

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a sheet-like material conveying device that prevents a defective holding and does not rub or scratch the sheet-like material. There is a place to do.

To this end, the invention according to claim 1 includes a first sheet conveying means for conveying the sheet, provided in the sheet conveyance direction downstream side of the first sheet conveyance means, this A second sheet conveying means provided with a first sheet holding means for receiving a sheet-like material from the first sheet conveying means; and a second sheet conveying means provided downstream of the second sheet conveying means in the sheet conveying direction. And a third sheet conveying means provided with a second sheet holding means for receiving a sheet-like material from the sheet conveying means, wherein the first sheet holding means is a sheet-like material from the first sheet conveying means. a receiving position to receive, in the sheet transporting device swingably supported between the receiving position in the sheet-like material received passes to the third sheet conveying means delivery position, said first Sheet holding hands In, which is connected from the receiving position to the suction air source upon movement to the delivery position includes a hole for adsorbing a sheet product, the first sheet holding means is a plurality in the width direction of the sheet, The plurality of first sheet holding means are provided on the both ends of the sheet-like material in the width direction, and fixed in the direction of stretching the sheet-like material in the width direction. The moving sheet holding means moves .

  The invention according to claim 2 is the invention according to claim 1, wherein the first sheet holding means is connected to a discharge source that discharges air when moving from the delivery position to the reception position.

According to a third aspect of the present invention, in the first aspect of the invention, the moving sheet holding means is configured to move by a negative pressure generated in the first sheet holding means by adsorbing a sheet-like object. It is a thing.

According to a fourth aspect of the present invention, in the first aspect of the invention, the sheet-like object that is provided downstream of the first sheet conveying unit in the sheet conveying direction is sucked in the direction of the first sheet holding unit. It is provided with a suction means.

The invention according to claim 5 is the invention according to claim 4, wherein the first sheet conveying means is provided with a horizontal needle means, and the sheet-like material conveyed by the first sheet conveying means is the horizontal needle means. After the registration in the width direction of the sheet-like material is aligned, the leading end side of the sheet-like material is sucked by the suction means.

According to the first aspect of the present invention, since the claw and the opening / closing mechanism for opening and closing the claw are not required, the weight can be reduced as compared with the conventional device. Therefore, the second sheet conveyance swinging between the receiving position for receiving the sheet-like material from the first sheet conveying means and the delivery position for delivering the sheet-like material received at the receiving position to the third conveying means. The moment of inertia of the means is reduced. For this reason, since the positional accuracy at the receiving position and the delivery position is improved, it is possible to prevent occurrence of a defective holding of the sheet-like material. Further, by reducing the weight of the second sheet conveying means, the swinging operation at high speed can be stabilized. Further, since the nail is not required, the paper conveyed by the third sheet conveying unit is not rubbed by the nail when the second sheet conveying unit moves from the delivery position to the receiving position. There is no rubbing or scratching. In addition, since there is no replacement of the claws as in the conventional case, the surface area of the hole portion that adsorbs the sheet-like material can be increased so that no non-holding portions are generated at both ends of the sheet-like material. Breakage can be prevented. Further, even if the sheet-like material abutted against the contact of the first sheet conveying means is wavy, the sheet-like material is pulled in the width direction and is tensioned and corrected to a flat shape. Registration accuracy by the horizontal needle device can be improved.

  According to the second aspect of the present invention, the sheet-like material conveyed by being transferred to the second holding unit of the third sheet conveying unit is transferred to the first sheet by the air discharged from the first sheet holding unit. Since the first sheet holding means does not come into contact with the sheet-like material because it is reliably separated from the sheet holding means, the sheet-like material is not rubbed or scratched.

According to the invention of claim 3, since the moving sheet holding surface is moved by the air that adsorbs the sheet-like material, there is no need to provide a dedicated air supply means for moving the moving sheet holding surface. Therefore, the structure is simplified.

According to the fourth aspect of the present invention, when the leading end of the conveyed sheet-like material is warped, the portion warped by the suction means immediately before being held by the first sheet holding means is the first sheet holding. Since the correction is made on the means side, the sheet-like object can be reliably held by the first sheet holding means.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a sheet-like material conveyance device according to the present invention, FIG. 2A is an enlarged perspective view of the same suction head, and FIG. 1B is II (B) − in FIG. II (B) is a cross-sectional view taken along the line, FIG. 3 is a model diagram compared with a conventional apparatus, FIG. 3 (A) is a plan view showing a state in which paper is conveyed by the suction head of the present invention, and FIG. It is a top view which shows the state which conveys paper with the nail | claw in.

  A reference numeral 1 in FIG. 1 is a feeder board on which sheets of paper are fed one by one from a paper feeding device (not shown), and the paper is conveyed onto the feeder board 1. A conveying tape 1a as a first conveying means is provided, and a difference plate 2 inclined at the same gradient as that of the feeder board 1 is connected to the front of the feeder board 1 by a connecting plate 3. Although not shown, a front end of the difference plate 2 is provided with a pad that moves between a paper pad position where the front end of the paper abuts and a retracted position.

  Reference numeral 4 denotes a swing shaft whose both ends are pivotally supported by the left and right frames, and a base end portion of a swing arm 5 is fixed to the swing shaft 4 by tightening. A plurality of suction heads 6 serving as first sheet holding means are juxtaposed in the axial direction of the swing shaft 4 at the swing end of the swing arm 5. The swing shaft 4, the swing arm 5, and the suction head 6 constitute a swing device 7 as a second sheet conveying unit.

  As shown in FIG. 2, the suction head 6 is formed by a case 8 that opens upward and a sheet holding plate 9 that is attached so as to cover the opening of the case 8. An air suction port 10 is provided at the bottom of the case 8, and a cylindrical connecting body 11 that communicates with the air suction port 10 is projected. One end of a hose 12 is fitted and fixed to the connection body 11, and the other end of the hose 12 is connected to an intake source (both not shown) via a rotary valve.

  The sheet holding plate 9 is provided with a hole portion 14 including a large number of suction holes 13, and the air outside the sheet holding plate 9 is sucked by connecting a suction valve and the hose 12 by a rotary valve. The holes 13 are sucked into the case 8. For this reason, when the paper is conveyed above the sheet holding plate 9, the paper is adsorbed on the surface of the sheet holding plate 9. Therefore, the surface of the sheet holding plate 9 forms the fixed sheet holding surface 15.

  In FIG. 1, reference numeral 16 denotes a transfer cylinder as a third sheet conveying means that is pivotally supported by the printing unit. A claw 17 and a claw base are provided in a notch 16 a provided on the outer periphery of the transfer cylinder 16. A plurality of sets of gripping claw devices (hereinafter simply referred to as “claws”) 19 serving as second sheet holding means that are opened and closed by an opening / closing drive device (not shown) are arranged in parallel in the axial direction of the transfer drum 16.

  In such a configuration, by swinging the swing shaft 4 in the forward and reverse directions by a predetermined angle by a cam mechanism (not shown), the swing arm 5 swings in the range of the predetermined angle in the arrow AB direction. That is, by the swinging of the swing arm 5, the suction head 6 is shown with a one-dot chain line that transfers the paper received at the receiving position to the claw 19 of the transfer cylinder 16 from the receiving position indicated by the solid line that receives the paper from the difference plate 2. It swings between the stop position and the receiving position so as to rotate to the stop position shown, and further rotate from this transfer position to the stop position indicated by the two-dot chain line. The suction head 6 that swings in this way is supplied with suction air from the intake source when positioned at the receiving position via the rotary valve, and stops supplying suction air when positioned at the delivery position.

  Next, an operation for conveying paper in the sheet-like material conveyance device configured as described above will be described. In advance, the swing arm 5 of the swing device 7 is swung in the arrow B direction, and the suction head 6 is positioned at the receiving position. In this state, the sheets fed one by one from the sheet feeding device (not shown) onto the feeder board 1 are placed on the feeder board 1 that is inclined so as to be lowered toward the front. It is sandwiched and transported between 1a and a roller (not shown). The paper transported on the feeder board 1 is transported on the difference plate 2 via the connecting plate 3 and the leading end abuts against a contact (not shown).

  Since suction air is supplied to the suction head 6 that is positioned in advance in the receiving position, the paper that is in contact with the contact is sucked by the fixed sheet holding surface 15 of the suction head 6. When the paper is sucked by the suction head 6, the swing arm 5 swings in the direction of the arrow A, and at the delivery position, the paper is held by the claw 19 of the transfer cylinder 16 and at the same time, suction air is supplied to the suction head 6. Since the paper stops, the paper is replaced by the claw 19 of the transfer cylinder 16 from the suction head 6.

  As described above, the paper holding means of the conventional swing device 7 is replaced with the suction head 6 from the gripping claw device using a claw and a claw base, so that an opening / closing mechanism for opening and closing the claw and the claw is not required, thereby reducing the weight. Therefore, the moment of inertia of the swing arm 5 is reduced. For this reason, since the position accuracy at the receiving position for receiving the paper from the difference plate 2 and the position at which the paper received at this receiving position is transferred to the claw 19 of the transfer cylinder 16 is improved, the occurrence of a paper holding defect is prevented. be able to. Further, by reducing the weight of the swing device 7, the swinging motion at high speed can be stabilized. Further, since no claw is required, when the suction head 6 moves from the delivery position to the delivery position, the bottom side of the paper conveyed by the transfer cylinder 16 is not rubbed by the claw, so that the paper is rubbed or scratched. There is no such thing as sticking.

  When it is necessary to replace the claws between the swing device 7 and the transfer drum 16 as in the prior art, an interval is provided between the claws 21 and 21 of the swing device 7 as shown in FIG. There is a need. Therefore, there is a limit in expanding the width W1 of the claw 21, and depending on the size of the paper 20, the corner of the paper 20 may be located between the claws 21 and 21. For this reason, since the corner portion of the paper 20 is not held by the claw 21, a so-called corner bending in which this portion is bent easily occurs. On the other hand, according to the present invention, since the nail is not replaced, the width of the fixed sheet holding surface 15 is set so that the corners of the paper 20 are not held as shown in FIG. Since it is easy to expand W2, the occurrence of corner breakage can be prevented.

  FIG. 4 is a side view of a sheet-like material conveying apparatus showing a second embodiment of the present invention. In the second embodiment, the suction head 6 is connected to an intake source and an air supply source (both not shown) via a rotary valve. When the suction head 6 moves from the receiving position to the delivery position, suction air is supplied from the intake source to the suction head 6 via the rotary valve as in the first embodiment described above. On the other hand, when the suction head 6 moves from the stop position to the receiving position, the discharge air is supplied from the air supply source to the suction head 6 via the rotary valve.

  With this configuration, when the suction head 6 moves from the stop position to the receiving position, air is discharged from the suction head 6, so that the air is carried by the claw 19 of the transfer cylinder 16 and conveyed. The bottom side of the paper 20 is blown upward. For this reason, since the bottom side of the paper 20 is separated from the suction head 6, the paper 20 is not rubbed by the suction head 6, so that it is possible to reliably prevent the paper from being rubbed or scratched.

  5 to 7 show a third embodiment of the present invention, FIG. 5 is a cross-sectional view of the main part, FIG. 6 is a perspective view showing a state in which the paper undulates, and FIG. It is the model figure seen from the front for demonstrating the state corrected to flatness.

  As shown in FIG. 5, the suction head 25 according to the third embodiment is slid in the left-right direction in the figure so as to cover a case 26 having a partially opened upper portion and an opening of the case 26. The movable body 27 is movably supported and has an upper opening, and a sheet holding plate 28 attached to the movable body 27 so as to cover the opening of the movable body 27. An air suction port 29 is provided at the bottom of the case 26, and a cylindrical connecting body 30 that communicates with the air suction port 29 is projected. One end of the hose 12 is fitted and fixed to the connection body 30, and the other end side of the hose 12 is connected to an intake source (both not shown) via a rotary valve.

  The movable body 27 is formed in a bottomed rectangular tube shape, and a rectangular tube-like sliding portion 31 is projected on the lower part of one side surface, and a flange 32 is provided on the upper end, and the whole is formed in a hollow shape. Has been. The movable body 27 is slidable in the left-right direction in the figure by sliding the sliding portion 31 into the case 26 and sandwiching the upper plate 26a of the case 26 between the sliding portion 31 and the flange 32. It is supported by. In this state, the air suction port 29 of the case 26 and the upper opening of the moving body 27 are communicated with each other. Reference numeral 33 denotes a compression coil spring elastically mounted between the case 26 and the moving body 27, which urges the moving body 27 in the right direction in the figure.

  The sheet holding plate 28 is provided with a hole portion 35 including a plurality of suction holes 34, and the air outside the sheet holding plate 28 is communicated between the intake source and the air intake port 29 by a rotary valve. Is sucked into the moving body 27 from the suction hole 34. For this reason, when the paper is conveyed above the sheet holding plate 28, the paper is adsorbed on the surface of the sheet holding plate 28. When the paper is adsorbed on the surface of the sheet holding plate 28, the inside of the case 26 is in an airtight state, and further, by supplying suction air from the intake source into the case 26, the moving body 27 has the elastic force of the compression coil spring 33. Move to the left in the figure against the force. Therefore, the surface of the sheet holding plate 28 forms a moving sheet holding surface 36.

  As shown in FIG. 7, the pair of suction heads 25, 25 is moved to both ends in the width direction of the paper 20, and the moving bodies 27, 27 move in the width direction of the paper 20 in opposite directions. Is attached to the swing arm 5. Further, the suction head 6 having the fixed sheet holding surface 15 described in the first embodiment is provided in the center of the paper 20 in the width direction. In such a configuration, as shown in FIG. 6, the paper 20 whose tip is in contact with the abutment 37 in a waved state, the suction heads 6 and 25 to which suction air is supplied from the intake source at this receiving position. Is adsorbed by.

  After being sucked, the suction air is continuously supplied to the suction heads 25, 25, whereby the movable sheet holding surfaces 36, 36 move in the width direction of the paper 20 in opposite directions. Accordingly, the paper 20 sucked by the suction heads 6 and 25 at the receiving position is corrected so as to be flattened because the width direction is pulled, so that the registration accuracy by the contact and the horizontal needle device can be improved. it can. In addition, since the moving sheet holding surface 36 is also moved using an intake source that supplies suction air to adsorb the paper to the moving sheet holding surface 36, the intake source and the rotary valve can be shared. Can be simplified.

  In the third embodiment, the pair of suction heads 25, 25 are provided at both ends in the width direction of the paper 20, but a horizontal needle device is provided at one end in the width direction of the paper 20. If it is, it is not always necessary to provide it at both ends, and it may be provided only at the other end.

  8 and 9 show a fourth embodiment of the present invention, FIG. 8 is a side view of the main part, and FIG. 9 is a time chart showing a supply state of suction air. In FIG. 8, reference numeral 40 denotes auxiliary suction as suction means, which is provided downstream of the differential plate 2 in the paper transport direction and upstream of the suction head 6 in the paper transport direction. It is comprised so that it may attract to 6 side. Both the auxiliary suction device 40 and the horizontal needle device denoted by reference numeral 42 are connected to an intake source (not shown) for supplying suction air to the suction head 6 via a rotary valve to which the suction head 6 is connected. ing.

  Next, with reference to FIG. 9, a paper transport operation in the fourth embodiment configured as described above will be described. When the leading edge of the paper 20 conveyed on the difference plate 2 comes into contact with the contact, suction air is supplied from the intake source to the horizontal needle device 42 via the rotary valve, so that the paper 20 is sucked by the horizontal needle device 42. Alignment in the width direction is aligned. When this registration is completed, suction air is supplied from the intake source to the auxiliary suction 40 via the rotary valve, and the leading end 20a of the paper 20 is sucked to the suction head 6 side by the auxiliary suction 40. Next, since suction air is supplied from the suction source to the suction head 6 via the rotary valve, the leading end 20 a of the paper 20 is sucked to the fixed sheet holding surface 15 of the suction head 6.

  At this time, even if the paper 20 is thick and the leading edge 20a is warped, the auxiliary suction 40 sucks the leading edge 20a toward the suction head 6 immediately before the leading edge 20a is sucked by the suction head 6. Therefore, the leading end 20a is securely adsorbed to the fixed sheet holding surface 15. Further, by correcting the warp of the leading end portion 20a, the paper 20 does not get over the bump. After the leading end 20a of the paper 20 is adsorbed to the fixed sheet holding surface 15, when the swing arm 5 of the swing device 7 is rotated and the adsorbing head 6 is positioned at the delivery position, supply of the suction air to the adsorbing head 6 Is stopped, the paper 20 is replaced by the claw 19 of the transfer cylinder 16.

  FIG. 10 is a side view of an essential part showing a modification of the fourth embodiment. In this modification, as the auxiliary suction, the suction head 25 having the movable sheet holding surface 36 described in the third embodiment is used, and the case 26 is attached to the differential plate 2 so that the paper 20 is sucked. The sheet holding surface 36 is movable to the suction head 6 side. With this configuration, when the leading end of the paper 20 comes into contact with the pad, the paper 20 moves to the opposite side of the transport direction due to the impact, and between the leading end of the paper 20 and the pad. Even when the gap is generated, the moving sheet holding surface 36 moves in the paper transport direction by the paper 20 being attracted to the moving sheet holding surface 36. For this reason, since the leading edge of the paper 20 comes into contact with the contact and the registration in the vertical direction is aligned, the paper 20 is reliably and accurately adsorbed to the fixed sheet holding surface 15 of the adsorption head 6.

  In the present embodiment, an example of paper as a sheet-like material has been described, but a film or the like may be used.

It is a side view of the sheet-like article conveying apparatus according to the present invention. FIG. 6A is an enlarged perspective view of the suction head, and FIG. 6B is a cross-sectional view taken along the line II (B) -II (B) in FIG. FIG. 3A is a model diagram comparing the present invention with a conventional one. FIG. 1A is a plan view showing a state in which the paper is conveyed by the suction head according to the present invention, and FIG. It is a top view. It is a side view of the sheet-like material conveyance apparatus which shows the 2nd Embodiment of this invention. It is sectional drawing of the principal part which shows the 3rd Embodiment of this invention. It is a perspective view which shows the 3rd Embodiment of this invention and shows the state which paper hits a wave. It is the model figure seen from the front for demonstrating the 3rd Embodiment of this invention and explaining the state which correct | amends the corrugated paper in flat form. It is a side view of the principal part which shows the 4th Embodiment of this invention. It is a time chart which shows the 4th Embodiment of this invention and shows the supply state of suction air. It is a side view of the principal part which shows the modification of 4th Embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Feeder board, 2 ... Difference board (1st sheet conveyance means), 4 ... Swing axis | shaft, 5 ... Swing arm, 6,25 ... Adsorption head (1st sheet holding means), 7 ... Swing apparatus (2nd Sheet conveying means), 14, 35 ... holes, 15 ... fixed sheet holding surface, 16 ... transfer cylinder (third sheet conveying means), 19 ... gripper device (second sheet holding means), 20 ... paper (Sheet-like material), 35 ... moving sheet holding surface, 37 ... contact, 40 ... auxiliary suction (suction means), 42 ... horizontal needle device.

Claims (5)

First sheet conveying means for conveying a sheet-like material;
Provided in the sheet conveyance direction downstream side of the first sheet conveyance means, and second sheet conveying means for the first sheet holding means for receiving the sheet from the first sheet conveying means is provided,
A third sheet conveying means provided on the downstream side in the sheet conveying direction of the second sheet conveying means, and provided with a second sheet holding means for receiving a sheet-like material from the second sheet conveying means,
The first sheet holding means, said a receiving position for receiving the sheet from the first sheet conveying means, between the receiving position in the received sheet receiving and passes the delivery position to the third sheet conveying means In the sheet-like material conveying device supported so as to be swingable between,
The first sheet holding means is provided with a hole portion that is connected to an intake source and adsorbs a sheet-like object when moving from the receiving position to the delivery position,
A plurality of the first sheet holding means are provided in the width direction of the sheet-like material,
The plurality of first sheet holding means are provided on the both ends of the sheet-like material in the width direction, and fixed in the direction of stretching the sheet-like material in the width direction. A sheet-like object conveying apparatus comprising a moving sheet holding means that moves . In the sheet-like article conveyance device according to claim 1,
The sheet conveying apparatus, wherein the first sheet holding unit is connected to a discharge source that discharges air when moving from the delivery position to the reception position. In the sheet-like article conveyance device according to claim 1,
  The moving sheet holding means moves by a negative pressure generated in the first sheet holding means by adsorbing the sheet-like object. In the sheet-like article conveyance device according to claim 1,
  A sheet-like article conveying apparatus provided with a suction means that is provided downstream of the first sheet conveying means in the sheet conveying direction and sucks the conveyed sheet-like substance in the direction of the first sheet holding means. . In the sheet-like article conveyance device according to claim 4,
  The first sheet conveying means is provided with a horizontal needle means, and the sheet-like material conveyed by the first sheet conveying means is aligned in the width direction of the sheet-like material by the horizontal needle means. A sheet-like material transporting device, wherein the leading end side of the sheet-like material is sucked by a suction means.

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