JP4150327B2 - Chopper folding device of folding machine - Google Patents

Description

  The present invention relates to a chopper folding device in a folding machine of a paper web rotary printing press.

  The chopper folding device of the folding machine is provided with a signature posture adjusting mechanism that adjusts the bending of the conveyed signature before the chopper folding process. Such a conventional chopper folding device of a folding machine is disclosed in Japanese Patent Application Laid-Open No. 7-41247 (Patent Document 1) and Japanese Patent Application Laid-Open No. 8-244504 (Patent Document 2).

  In Patent Document 1, a sensor for detecting the state of conveyance of the signature before the chopper folding process is provided, and the contact is driven and controlled based on a signal from the sensor. This sensor detects both left and right ends of the signature before the chopper folding process, and detects the bending of the signature by measuring both ends of the signature that has passed over the sensor.

  Moreover, in patent document 2, the sensor for pinpointing the distortion of a signature is provided in the vicinity of the contact and the contact, and the conveyed signature is stopped based on the position of the signature measured by this sensor. It controls the position and movement of the brush and the movement of the chopper blade. In addition to the control of the brush and the chopper blade, the pad rotates in accordance with the front end portion of the signature.

Japanese Patent Laid-Open No. 7-41247 JP-A-8-244504

  In the above-described conventional chopper folding device, in Patent Document 1, the bending of the conveyed signature is corrected by using a contact that swings around the folding machine center, and the signature is slanted at the time of chopper folding. To prevent it from being folded. On the other hand, in Patent Document 2, when the signature is folded by the chopper blade, the pad is rotated along the posture of the signature in which the central portion of the front end portion is projected to guide the signature. ing. This prevents the generation of scratches on the signature.

  That is, the conveyed signature has already been folded vertically and horizontally before the chopper folding process. As a result, when the signature is folded by the chopper blade, a difference in resistance occurs between the folded bag side and the other end side. When the bag side is transported first, if it is folded by the chopper blade, the center part of the end of the bag side of the signature will be in a protruding position, and this protruding part may locally abut against the pad. is there. Thus, when contacting locally, there exists a problem that a crack is generated. Japanese Patent Application Laid-Open No. H10-228688 addresses this problem.

  That is, in patent document 1, it cannot respond about the state where the central part of the front end part of the signature which is regarded as a problem in patent document 2 is protruded. I couldn't cope with the bending of signatures that I had a problem with.

  Therefore, the present invention provides a chopper folding device for a folding machine that can adjust the position of the contact in any position of the sheet-like material, correct the bending of the sheet-like material, and prevent the occurrence of scratches on the sheet-like material. The purpose is to provide.

  A chopper folding device for a folding machine according to a first aspect of the present invention that solves the above problems is provided near a chopper table in which an opening is formed and a downstream side in the conveyance direction of the sheet-like material of the opening. In the chopper folding device of a folding machine comprising a stopper that regulates the sheet-like material and a chopper blade that pushes the conveyed sheet-like material into the opening, the stopper includes one stopper and the other stopper. The one stopper and the other stopper are supported so as to be swingable around a common fulcrum.

  A chopper folding device for a folding machine according to a second aspect of the present invention that solves the above problem is the chopper folding device for a folding machine according to the first invention, wherein the one stopper and the other stopper are the one stopper and The outer end of the other stopper swings so as to be formed in a straight line passing through the common fulcrum, and the both outer ends are formed on the upstream side in the conveying direction of the sheet-like material. Rocking.

  A chopper folding device for a folding machine according to a third aspect of the present invention that solves the above problems is the chopper folding device for a folding machine according to the second invention, wherein the contact surfaces of the one stopper and the other stopper are The position perpendicular to the conveyance direction of the sheet-like material, the contact surface of the one stopper on the upstream side in the conveyance direction of the sheet-like material, and the contact surface of the other stopper A position formed on the downstream side in the conveyance direction of the sheet-like material, the contact surface of the one stopper on the downstream side in the conveyance direction of the sheet-like material, and the contact surface of the other stopper on the sheet It is located in the position formed in the conveyance direction upstream of a shaped object, It is characterized by the above-mentioned.

  The chopper folding device of the folding machine according to the fourth aspect of the present invention that solves the above problems is the chopper folding device of the folding machine according to the first aspect of the invention, wherein the common fulcrum is orthogonal to the conveying direction of the sheet-like material, It is characterized by being orthogonal to the longitudinal direction of the one stopper and the other stopper.

  Therefore, in the chopper folding device according to the present invention, the posture of the stopper is a state in which the stopper is formed in a straight line and a state in which the outer end portion of the stopper is formed on the upstream side of the sheet-like object, that is, a posture in a V shape. Therefore, it is possible to cope with any posture of the sheet-like material, to correct the bending, and to prevent the occurrence of hitting scratches.

  According to the chopper folding device of the folding machine according to the present invention, the chopper table in which the opening is formed, and the sheet-like material that is provided near the downstream side of the opening in the conveyance direction of the sheet-like material is conveyed. In a chopper folding device of a folding machine comprising a stopper for regulating and a chopper blade for pushing the sheet-like material to be conveyed into the opening, the stopper is composed of one stopper and the other stopper, Since one stopper and the other stopper are supported so as to be swingable around a common fulcrum, the posture of the stopper can be adjusted in any posture of the sheet-like material. It is possible to provide a chopper folding device for a folding machine that can correct bending and prevent the occurrence of stopper scratches on the sheet-like material.

  Further, the one stopper and the other stopper are swung so that the outer end portions of the one stopper and the other stopper are formed in a straight line passing through the common fulcrum. Since the end portion swings so as to be formed on the upstream side in the conveyance direction of the sheet-like material, the outer end portion of the stopper swings so as to pass through the common fulcrum corresponding to the bending of the sheet-like material. Since it moves, it can prevent that the said sheet-like thing is folded diagonally at the time of chopper folding. In addition, even when the center portion of the bag-side end surface of the sheet-like material is projected during chopper folding, both outer end portions of the stopper swing to the upstream side of the sheet-like material. The protruding portion of the sheet-like material does not come into local contact, and the occurrence of stopper scratches can be prevented.

  Further, the contact surfaces of the one stopper and the other stopper are perpendicular to the conveying direction of the sheet material, and the contact surface of the one stopper is conveyed to the sheet material. A position where the contact surface of the other stopper is formed on the downstream side in the transport direction of the sheet material, and the contact surface of the one stopper is transported in the transport direction of the sheet material. Since the contact surface of the other stopper is positioned at the downstream side and the position formed on the upstream side in the conveying direction of the sheet-like material, the sheet-like material can handle any bending of the sheet-like material. Since the posture of the object can be corrected, it is possible to surely prevent the sheet-like object from being obliquely folded at the time of chopper folding, and to prevent the occurrence of a scratch on the stopper.

  Furthermore, since the common fulcrum is perpendicular to the conveying direction of the sheet-like material and perpendicular to the longitudinal direction of the one stopper and the other stopper, the sheet-like material can be reliably placed in any posture. The posture of the stopper can be adjusted, the bending of the sheet-like material can be corrected, and the occurrence of a scratch on the sheet-like material can be prevented.

  Hereinafter, a chopper folding device according to the present invention will be described with reference to the accompanying drawings. 1 is a plan view of a chopper folding apparatus according to an embodiment of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a sectional view taken along line AA in FIG. 1, FIG. 4 is a sectional view taken along line BB, and FIG. Similarly CC sectional drawing and FIG. 6 show the state of contact according to the state of the signature conveyed.

  Between the left and right frames 1, a chopper table 2 having a slit 2 a as an opening is laid horizontally. In the chopper table 2, the upper conveying belt 3 and the lower conveying belt 4 are respectively provided on the left and right sides of the slit 2 a, and the conveying direction of the signature 43 as a sheet-like material indicated by arrows in FIG. 1. Is stretched along.

  A beam member 5 is installed between the frames 1 on the downstream side of the chopper table 2 in the conveying direction of the signature 43. A support bracket 6 is attached to the central portion of the beam member 5 on the upstream side in the conveyance direction of the signature 43 with a bolt. An air cylinder 7 having a piston rod 7a attached downward is supported on the upper portion of the support bracket 6. The piston rod 7a of the air cylinder 7 supports a pair of support bars 8 and 9 in which notches 8a and 9a formed at the inner end face each other. The front surfaces of the support bars 8 and 9 are respectively attached with abutments 10a and 10b as stoppers formed in a pair of left and right plates with bolts.

  Further, motor support plates 11 and 12 are respectively attached to the beam member 5 with bolts. The motor support plate 11 is provided with a contact twist adjusting motor 13, which will be described in detail later, on the outside of the air cylinder 7, and a pre-contact guide height adjusting motor 15, which will be described in detail later, on the inner side. It is attached perpendicular to the beam member 5. The motor support plate 12 is similarly attached with a tapping adjustment motor 14 which will be described in detail later.

  Further, potentiometers 13a, 14a, 15a are respectively attached to the contact twist adjusting motor 13, the contact twist adjusting motor 14, and the pre-contact guide height adjusting motor 15. The potentiometers 13a, 14a, and 15a have gears provided on the input shafts of the potentiometers 13a, 14a, and 15a and gears provided on the output shafts of the motors 13, 14, and 15, respectively. The rotational speeds of the motors 13, 14, 15 are detected.

  A universal joint 16 is supported on the output shaft of the front guide height adjusting motor 15 through the beam member 5 toward the center of the left support bar 8. A bevel gear support member 17 is installed on the distal end side of the universal joint 16, and a bevel gear 18 fixed to the distal end of the universal joint 16 penetrates the bevel gear support member 17 in the conveying direction of the signature 43. ing. The bevel gear 18 meshes with a bevel gear 20 fixed to the upper end of a vertical gear shaft 19 that penetrates the support bar 8 in the vertical direction.

  A screw portion 21 is formed on the vertical gear shaft 19 between the left support bar 8 and the bevel gear 20, and the screw portion 21 is not rotatable and can be moved up and down. Are screwed into the screw holes 22b. Note that the left-front-front guide horizontal plate 22a may always be assembled downwardly with a spring or the like so as to absorb backlash due to the screw portion 21.

  On the upstream side in the conveying direction of the signature 43 on the left-front guide horizontal plate 22a, a left-front guide 24a is fixed with a bolt via a left L-shaped bracket 23a. The left abutment guide 24a is arranged so as to sandwich the above-described upper conveyance belt 3 and the lower conveyance belt 4. Further, the shape is formed long in the conveying direction of the signature 43, and the front half of the lower surface is formed with an inclined surface that rises forward.

  Below the support bars 8 and 9, left and right rotating shafts 25 and 26 are rotatably supported by a rotating shaft support plate 27. The rotary shafts 25 and 26 are connected by a rotary shaft connecting member 28 at the lower part of the center part of the support bars 8 and 9. Since the rotary connecting member 28 is positioned below the common shaft of the support bars 8 and 9, the rotary connecting member 28 has a joint structure that can rotate around the piston rod 7a.

  A bevel gear 29 is fixed to the lower end of the vertical gear shaft 19 and meshes with a bevel gear 30 fixed to the rotary shaft 25. A bevel gear 31 is fixed on the rotation shaft 26 that is positioned symmetrically with the rotation shaft 25 with the piston rod 7a as a center. The bevel gear 31 meshes with a bevel gear 33 that is fixed to the lower end of a vertical gear shaft 32 that is vertically supported by the right support bar 9. A stop member 34 is attached to the upper end of the vertical gear shaft 32, and a right-front pre-guide horizontal plate 22c is disposed below the stop member 34. A threaded portion 35 is formed on the vertical gear shaft 32 between the right support bar 9 and the stopper member 34. The threaded portion 35 is formed on the right abutment guide horizontal plate 22c that cannot be rotated and can be moved up and down. It is screwed into the formed screw hole 22d.

  That is, when the pre-contact guide height adjusting motor 15 serving as a height adjusting mechanism is rotated forward or reverse, the rotation is transmitted to the universal joint 16 and the vertical gears via the bevel gears 18 and 20. It is transmitted to the shaft 19. By the rotation of the vertical gear shaft 19, the left abutting front guide horizontal plate 22a screwed with the screw portion 21 of the vertical gear shaft 19 moves up and down. As a result, the left front guide 24a supported on the left front guide horizontal plate 22a via the left L-shaped bracket 23a moves in the vertical direction, and the gap with the chopper table 2 is increased or decreased.

  On the other hand, the rotation of the vertical gear shaft 19 is transmitted to the rotary shafts 25 and 26 via the bevel gears 29 and 30. The rotation of the rotary shaft 26 causes the vertical gear shaft 32 to rotate via the bevel gears 31 and 33, and the right abutment guide horizontal plate 22c screwed with the screw portion 35 is moved up and down. Thereafter, in the same manner as described above, the right abutment guide 24b is displaced in the vertical direction. On both the left and right sides of the vertical gear shafts 19 and 32, there are provided guide posts 36 that are supported by the front guide horizontal plates 22a and 22c and penetrate the support bars 8 and 9. As a result, the front and rear guide horizontal plates 22a and 22c can be raised and lowered smoothly.

  Further, by the operation of the air cylinder 7, the abutment 10a, 10b and the pre-abutment guides 24a, 24b installed on the pair of left and right support bars 8 and 9 can be simultaneously moved in the vertical direction.

  The pre-contact guide height adjusting motor 15 is driven and controlled by a control device (controller). The control device receives signals from a paper quality input unit and a folding specification input unit provided on a control panel and the like, and also receives a signal from a speed detector that detects the rotational speed of the machine. Based on these input signals, the pre-contact guide height adjusting motor 15 is driven and controlled so that the heights of the pre-contact guides 24a and 24b, that is, the gap with the chopper table 2 are appropriate. At this time, the potentiometer 15a can detect the height of the front guides 24a and 24b by detecting the number of rotations of the front guide height adjusting motor 15.

  Further, the tapping adjustment motors 13 and 14 are formed with screw portions for extending to the outer ends of the support bars 8 and 9 with respect to the air cylinder 7 and being attached to the beam member 5. A rotating shaft 38 formed with a male screw portion through the rotating shaft support member 37 is extended. The bolt 41 is fixed to the bolt receiving portion 39 installed at the tip of the rotating shaft 38 via a bracket 40 protruding to the downstream side in the conveying direction of the signature 43 of the support bars 8 and 9. . The bracket 40 is formed with a long hole 40 a that is long in the vertical direction so that the support bars 8 and 9 can move in the vertical direction and the conveying direction of the signature 43. A spring 42 that passes through the bolt 41 is fitted between the bracket 40 and the bolt 41. The spring 42 is always energized so as to absorb the backlash so that no gap is generated between the bracket 40 and the bolt 41.

  Therefore, the twisting adjustment motors 13 and 14 as the posture adjustment mechanism rotate in the forward or reverse direction, and at the same time, the rotating shaft 38 moves in the conveying direction of the signature 43 while rotating. 9 moves in the front-rear direction. Thereby, the bolt receiving portion 39 at the tip of the rotating shaft 38 is fixed to the support bars 8 and 9 with the bolts via the bracket 40, so that it is orthogonal to the conveying direction of the signature 43, The support bars 8 and 9 can rotate around the piston rod 7a which is a common fulcrum perpendicular to the longitudinal direction of the abutments 10a and 10b. That is, the abutments 10a and 10b can move around the piston rod 7a. At this time, the potentiometers 13a and 14a can detect the positions of the pads 10a and 10b by detecting the number of rotations of the motors 13 and 14 for adjusting the twisting and twisting. A two-dot chain line portion in FIG. 1 shows a state of rotation.

  By adopting such a structure, as shown in FIG. 6, the front end of the signature 43 is perpendicular to the conveying direction, that is, the signature 43 is not bent and the signature 43 is not bent. When the central portion of the bag-side end face is conveyed without protruding, the abutment 10a, 10b in FIG. 5 (a) is merely held in a posture along the front end portion of the signature 43. When the left side of the front end face of the signature 43 is conveyed in advance, the posture of the bent signature 43 can be corrected by holding the posture of the abutments 10a and 10b in FIG. . When the right side of the front end surface of the signature 43 is conveyed in advance, the posture of the bent signature 43 can be corrected by holding the posture of the abutments 10a and 10b in FIG. . Accordingly, since the posture of the bent signature 43 can be corrected as shown in FIGS. 5B and 5C, it is possible to prevent the signature from being folded obliquely when the chopper is folded. Further, when the central portion of the bag-side end face of the signature 43 is protruded during chopper folding, the support 10a and 10b in FIG. The bars 8 and 9 are interlocked with the posture along the shape of the signature 43. Therefore, since the protruding portion of the signature 43 does not locally contact the abutments 10a and 10b and the pre-abutment guides 24a and 24b, it is possible to prevent the occurrence of a scratch. In FIG. 6, a center line that is an axis coinciding with the central axis of the piston rod 7 a is indicated by O.

  The tapping adjustment motors 13 and 14 are driven and controlled by a control device. In this case, a sensor or the like may be used. Sensors are installed on the chopper table 2 and the pads 10a, 10b, etc., and while the signature 43 is being conveyed, the posture of the signature 43 is measured continuously from a certain point in time or at a specific time. The signal measured by the sensor is transmitted to the control device, and the tapping adjustment motors 13 and 14 are rotated based on this signal.

  For example, the front end of the signature 43 measures which front end on the left and right of the signature 43 is conveyed in advance.

  When the front end portion is perpendicular to the conveying direction of the signature 43, that is, when the bending of the signature 43 is not measured, the support bars 8 and 9 are parallel to the front end portion of the signature 43. Move.

  In the case where the left front end has been transported in advance, the left support bar 8 is moved forward (upstream in the transport direction of the signature 43) to move the right front end of the signature 43 to the left pad 10a. The front end of the signature 43 is corrected to be perpendicular to the conveyance direction of the signature 43. At this time, the right support bar 9 may remain vertical to the transport direction, or may be moved to a position rearward (downstream in the transport direction of the signature 43) so as to be in a straight line with the left support bar 8. I do not care.

  When the right front end has been transported in advance, the right support bar 9 is moved forward (upstream in the transport direction of the signature 43), and the left front end of the signature 43 is moved to the left pad 10b. The front end of the signature 43 is corrected to be perpendicular to the conveyance direction of the signature 43. At this time, the left support bar 8 may remain vertical to the transport direction, or may be moved to a position rearward (downstream in the transport direction of the signature 43) so as to be in a straight line with the right support bar 9. I do not care.

  As described above, in the chopper folding apparatus, the bending of the signature 43 is corrected, and at the same time, the chopper is folded. At this time, the central portion of the front end portion of the signature 43 may protrude. At this time, the bends 10a and 10b that have been bent, that is, the support bars 8 and 9 are controlled to move in accordance with the shape of the front end of the signature 43, and serve as a guide for the signature 43 when the chopper is folded. Fulfill. As a result, the signature 43 that has been chopper-folded can be easily folded into the gap of the slit 2a.

  Therefore, the chopper table 2 in which the slit 2a is formed, and the abutments 10a and 10b that are provided in the vicinity of the slit 2a on the downstream side in the transport direction of the signature 43 and regulate the signature 43 that is transported. In the chopper folding device of the folding machine having the above, the abutments 10a and 10b are supported so as to be swingable around the piston rod 7a, which is a common fulcrum, so that even in any posture of the signature 43 Further, it is possible to provide a chopper folding device for a folding machine that makes it possible to adjust the postures of the pads 10a and 10b, correct the bending of the signature 43, and prevent the occurrence of scratches.

  The abutments 10a and 10b swing so that the outer end portions of the abutments 10a and 10b are formed in a straight line passing through a common fulcrum, and both the outer end portions are transported of the signature 43. Since it swings so as to be formed on the upstream side in the direction, the abutment 10a, 10b can correct the posture of the signature 43 corresponding to the bending of the signature 43. Further, when the chopper is folded, the outer end portions of the abutments 10a and 10b are located on the upstream side of the signature 43 even when the central portion of the bag-side end surface of the signature 43 is projected. Since it swings, the protruding portion of the signature 43 does not contact locally, and the occurrence of scratches can be prevented.

  Further, the abutments 10a and 10b are positioned perpendicular to the conveying direction of the signature 43, the left abutting 10a is upstream in the conveying direction of the signature 43, and the right abutting 10b is folded. A position formed on the downstream side in the transport direction of the signature 43, the left pad 10a on the downstream side in the transport direction of the signature 43, and the right pad 10b on the upstream side in the transport direction of the signature 43. Since the position of the signature 43 can be corrected and the posture of the signature 43 can be corrected, it is possible to reliably prevent the signature 43 from being folded obliquely at the time of chopper folding, and to prevent a scratch on the stopper. Can be prevented.

  Furthermore, since the piston rod 7a is orthogonal to the conveying direction of the signature 43 and orthogonal to the longitudinal direction of the abutments 10a, 10b, the posture of the stopper can be reliably maintained in any posture of the sheet-like material. The adjustment can be made, the bending of the sheet-like material can be corrected, and the occurrence of stopper scratches on the sheet-like material can be prevented.

  INDUSTRIAL APPLICABILITY The present invention is applicable to a chopper folding device having a function of correcting the bending of a conveyed sheet-like material in a folding machine of a web-fed rotary printing press.

It is a top view of the chopper folding apparatus which shows one Example of this invention. It is a top view of FIG. It is AA arrow sectional drawing of FIG. It is BB arrow sectional drawing of FIG. It is CC sectional view taken on the line of FIG. (A) shows the posture of the contact when the front end is conveyed perpendicularly to the conveyance direction, and (b) shows the posture of the contact when the left front end is corrected in advance and the signature is conveyed. (C) shows the posture of the contact when the right front end is conveyed in advance, and (d) the posture of the contact when the central portion of the bag side end face of the signature is protruded at the time of chopper folding. It is operation | movement explanatory drawing which showed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Frame 2 Chopper table 2a Slit 3 Upper conveyance belt 4 Lower conveyance belt 5 Beam member 6 Support bracket 7 Air cylinder 7a Piston rod 8 Left support bar 8a Notch 9 Right support bar 9a Notch 10a Left pad 10b Right Contact 11 Motor support plate 12 Motor support plate 13 Contact twist adjustment motor 13a Potentiometer 14 Contact twist adjustment motor 14a Potentiometer 15 Pre-contact guide height adjustment motor 15a Potentiometer 16 Universal joint 17 Bevel gear support member 18 Bevel gear 19 Vertical gear Shaft 20 Bevel gear 21 Threaded portion 22a Front left guide horizontal plate 22b Screw hole 22c Right front guide horizontal plate 22d Screw hole 23a Left L bracket 23b Right L bracket 24a Left front guide 24b Right front guide 25 Rotating shaft 26 rotations 27 Rotating shaft support plate 28 Rotating shaft connecting member 29 Bevel gear 30 Bevel gear 31 Bevel gear 32 Vertical gear shaft 33 Bevel gear 34 Stopping member 35 Screw portion 36 Guide post 37 Rotating shaft support member 38 Rotating shaft 39 Bolt receiving portion 40 Bracket 40a Long hole 41 Bolt 42 Spring 43 Signature

Claims (4)

A chopper table in which an opening is formed;
A stopper provided in the vicinity of the downstream side of the opening in the conveyance direction of the sheet-like material, and restricts the sheet-like material to be conveyed,
A chopper blade that pushes the conveyed sheet-like material into the opening,
In the chopper folding device of the folding machine with
The stopper is composed of one stopper and the other stopper,
The chopper folding device for a folding machine, wherein the one stopper and the other stopper are supported so as to be swingable around a common fulcrum. In the chopper folding device of the folding machine according to claim 1,
The one stopper and the other stopper are
The contact surface with which the sheet-like object of the one stopper and the other stopper contacts is swung so as to be formed linearly via the common fulcrum,
The chopper folding device of a folding machine, wherein the contact surfaces of the one stopper and the other stopper are swung so as to be formed on the upstream side in the conveying direction of the sheet-like material. In the chopper folding device of the folding machine according to claim 2,
A position where the contact surfaces of the one stopper and the other stopper are perpendicular to the conveying direction of the sheet-like material;
A position where the contact surface of the one stopper is formed on the upstream side in the transport direction of the sheet-like material, and the contact surface of the other stopper is formed on the downstream side in the transport direction of the sheet-like material;
The contact surface of the one stopper is formed on the downstream side in the conveyance direction of the sheet-like material, and the contact surface of the other stopper is formed on the upstream side in the conveyance direction of the sheet-like material. A chopper folding device for a folding machine characterized by being positioned. In the chopper folding device of the folding machine according to claim 1,
The common fulcrum is perpendicular to the sheet-like material conveyance direction and perpendicular to the longitudinal direction of the one stopper and the other stopper.

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