JP4103904B2 - Folding device - Google Patents

Description

  The present invention relates to a folding device for a rotary press that cuts and folds printed continuous paper.

  In this type of folding device, a plurality of continuous sheets of paper with a unit printing area of a predetermined length aligned and fed into a space between the saw cylinder and the folding cylinder are fed by a nipping roller, and the plurality of superimposed sheets A plurality of holding needles juxtaposed along the line parallel to the axis of the folding cylinder on the leading end side of the unit printing area of the continuous paper are protruded from the circumferential surface of the folding cylinder and held, and are rotated by rotating the folding cylinder. The continuous paper is pulled while being wound around the peripheral surface, while the saw blade provided on the saw cylinder and the saw blade receiver provided on the folding cylinder are bitten at the opposite positions of these two cylinders, and the continuous paper is subsequently moved to the next. Cutting is performed on the leading side in the vicinity of the holding needle piercing position in the unit printing area, and then the cut sheet of the unit printing area length is folded in parallel with the cutting edge.

  Such a folding device is, for example, “3-4 folding section” extending from page 85 to 95 of Non-Patent Document 1, or from page 10 to line 33 of Page 32 of Non-Patent Document 2. As outlined in "(1) Parallel folding device" and Fig. 2.26 on page 32, it is well known and commonly used in rotary presses using continuous paper.

  And regarding such a folding device, in order to ensure the sticking of the holding needle into the continuous paper, a device that supports the continuous paper from the opposite side of the piercing side at the position where the needle is pierced into the continuous paper is disclosed in, for example, Patent Document 1 Patent Document 2 and Patent Document 3 are proposed.

  In the apparatus proposed in Patent Document 1, a backup roller that receives pressure when the holding needle (holding needle) of the folding cylinder is pushed is provided between the folding cylinder and the nipping roller with respect to the circumferential surface of the folding cylinder. The backup roller is rotated as the continuous paper travels, or is driven so that its peripheral surface speed is the same as the continuous paper travel speed. Yes.

  Further, the apparatus proposed in Patent Document 2 is arranged such that a rotating support surface corresponds to the cylinder in a region where the signature is transferred to a cylinder (transfer cylinder or folding cylinder) that guides the signature, and the web. When the holding element (holding needle) is pierced into the (continuous paper), the rotating support surface supports the continuous paper, and further, the continuous paper conveyed (runs) with the rotating support surface. Are driven so as not to generate a relative speed.

  Further, in the apparatus proposed in Patent Document 3, an appropriate number of needles provided in the axial direction of the folding cylinder upstream of the continuous paper cutting position between the folding cylinder and the saw cylinder are fed between the two cylinders. In the vicinity of the position where the continuous paper is pierced, a rotatable roller that guides the continuous paper fed from the upstream around the circumferential surface on the side facing the folding cylinder and guides it to the outer circumferential surface of the folding cylinder, It is configured to be formed of a cushion member capable of absorbing changes in the thickness direction of continuous paper.

Newspaper printing handbook (edited by the Japan Newspaper Association Technical Committee, published by the Japan Newspaper Association on April 10, 1997) New Introduction to Printing Machinery (written by Kazuhito Izumi, first published on October 31, 2001) Full text of Shokai 62-157864 JP-A-10-236726 JP 2004-75296 A

  By the way, in a folding device provided with this type of paper feeding assist mechanism, a plurality of stacked continuous papers are held by holding needles provided on the folding cylinder and pulled while being wound by the rotation of the folding cylinder. The distance from the folding cylinder center line is different between the continuous paper on the inner side (folding cylinder side) and the continuous paper on the outer side (saw cylinder side) by the thickness of the overlapping continuous paper. For this reason, the continuous continuous paper that is simultaneously fed by the nipping roller is pulled over a slightly longer distance within the same time by the outer continuous paper (outer paper) compared to the inner continuous paper (inner paper). As a result, the outer paper side is greatly elastically deformed (elongated) due to a larger tension than the inner paper side, but the contact friction force between the continuous papers that changes depending on the printing area and ink state at this time. As a result, each of the stacked sheets of paper repeats integration and slipping between adjacent continuous sheets, causing unnecessary flapping on the multiple continuous sheets that are running before being wound around the folding cylinder, and holding needles The pierced holes are elongated at every continuous paper, and the overlapping unit print areas are displaced, leading to a decrease in the accuracy of the folding position and the cutting position.

  In Patent Document 1 and Patent Document 3, a device is proposed in which the holding needle is pierced into the continuous paper and the roller is rotated by the travel of the continuous paper. When the roller is rotated, a large burden is placed on the outer paper that contacts the peripheral surface of the roller, causing a delay in the outer paper that originally needs to travel more than the inner paper, and the travel amount of the inner paper and the outer paper is reduced. The difference is increased, and not only the flapping and the piercing hole of the holding needle become noticeable, but also the running delay of the outer paper that contacts the peripheral surface of the roller gathers in the upstream position in the vicinity of the portion where the roller contacts. As a result of this deformation, the deformed continuous paper irregularly moves in a direction parallel to the axis of the roller, and the accuracy of the folding position and the cutting position decreases.

  Further, in Patent Document 1 and Patent Document 2, a device for driving a roller while ensuring that the holding needle is pierced into the continuous paper is proposed, but in the device proposed in Patent Document 1, In the device proposed in Patent Document 2, the gear directly connected to the folding cylinder is driven to rotate at a rotation rate at a constant ratio with respect to the rotation number of the folding cylinder. A configuration in which a driving wheel received (coupled) in a cutting cylinder (saw cylinder) is driven as a driving source so as to rotate at a constant rotation speed with respect to the rotation speed of the cutting cylinder using a driving belt; In other words, since the cutting cylinder needs to rotate in a fixed relationship with the folding cylinder, the devices proposed in these two documents are eventually driven to rotate at a rotation rate of a fixed ratio to the rotation speed of the folding cylinder. It is supposed to be configured.

  That is, in both of the devices proposed in Patent Document 1 and Patent Document 2, it is described that the peripheral surface speed of the roller is the same as the traveling speed of the continuous paper, but in actuality, the peripheral surface of the folding cylinder When determining the number of rotations of the roller, the peripheral surface speed is only a certain ratio to the speed, and the roller does not have the effect of rotating a roller that is a heavy load on the outer paper as in the device in which the continuous paper is driven. When processing continuous paper that exceeds the thickness of the continuous paper and the number of overlapped sheets, the peripheral speed of the roller may be slower than the running speed of the continuous paper that the roller contacts, or some other The same inconvenience arises for the reason, and the roller peripheral surface exerts a braking action on the continuous paper contacted by the roller to obstruct the smooth running of the continuous paper, and eventually causes the running delay of the outer paper. Not only can this be eliminated, but in some cases it acts to promote it, increasing the difference in travel between the inner paper and the outer paper, thereby repeating the integration and sliding of adjacent continuous paper And unnecessary continuous fluttering of a plurality of continuous papers traveling as described above occurs, the piercing hole of the holding needle is not elongated, and the travel delay of the outer paper that contacts the peripheral surface of the roller is also the same as described above. It may gather and swell and deform at the upstream position near the part where the roller contacts, and this deformed continuous paper may move irregularly in a direction parallel to the axis of the roller. The decrease in the accuracy of the position and cutting position could not be eliminated.

  The present invention has been made in view of the above, and in a folding device having a paper feed assist mechanism, the folding cylinder is held by a holding needle provided on the folding cylinder and is wound around the folding cylinder by the rotation of the folding cylinder. In a plurality of stacked continuous papers pulled while being pulled, the outer paper side can follow the pulling by the holding needle without difficulty, and the adjacent continuous papers generated in the plurality of stacked continuous papers traveling are integrated. Eliminates or minimizes repetition of slipping and sliding, and eliminates the delay in running the outer paper that contacts the peripheral surface of the roller. To prevent the fluttering of the running continuous paper and the length of the piercing hole of the holding needle caused by these, and to maintain the accuracy of the folding position and cutting position in a good state Than is.

  In addition to the above, when an abnormality such as a paper jam occurs in the folding device during operation of the folding device, the abnormality can be prevented from spreading or spreading to the roller. Therefore, it is intended to maintain a highly accurate and stable folding action continuously.

In order to achieve the above object, a folding apparatus according to the present invention aligns a unit printing area of a predetermined length with a facing space between a rotating saw cylinder and a folding cylinder by displacing opposed circumferential surfaces in the same direction. A plurality of continuous papers that have been superposed are fed by a nipping roller, and the leading end side of the unit printing region of the superposed continuous papers is arranged in parallel along a line parallel to the axis of the folding cylinder. A plurality of holding needles are protruded from the circumferential surface of the folding cylinder and pierced and held, and pulled while winding the continuous paper around the circumferential surface by rotation of the folding cylinder, and provided on the saw blade and folding cylinder provided on the saw cylinder. The continuous blade is cut at the leading side in the vicinity of the holding needle piercing position in the subsequent unit printing area, and the cut paper of the cut unit printing area length is cut. For folding device that folds parallel to the edge From the folding cylinder peripheral surface of the holding needle that holds the plurality of superimposed continuous papers to the protruding position of the holding needle on the folding cylinder circumferential surface that is rotationally displaced toward the facing space or to the downstream position in the vicinity thereof. The peripheral surfaces are opposed to each other with a predetermined interval so as to be smaller than the protruding dimension, and the peripheral surface is capable of receiving the tip side of the holding needle, and the plurality of continuous sheets that are overlapped with each other. A paper feed auxiliary roller provided so as to come into contact with the outermost surface of the plurality of stacked continuous papers when being pulled while being wound around the circumferential surface of the folding cylinder, and the folding cylinder and the center of rotation are shared. A roller driving means for driving the paper feed auxiliary roller so that a virtual cylinder whose radius is the sum of the radius and the predetermined interval has a peripheral surface speed equal to or higher than a peripheral surface speed when rotating integrally with the folding cylinder. , By the roller driving means The driving speed of the feed auxiliary roller in accordance with the paper feed auxiliary action status of the paper feed auxiliary roller as is changeable,
A bulge detecting means is provided for detecting a bulge deformation at an upstream position in the vicinity of the contact position with the peripheral surface of the paper feed auxiliary roller at the contact surface with the peripheral surface of the paper feed auxiliary roller of a plurality of stacked continuous sheets. Based on this detection signal, the driving speed of the paper feed auxiliary roller by the roller driving means can be changed .

  In the folding device, the peripheral surface of the paper feed auxiliary roller is moved between the operation position separated from the folding cylinder peripheral surface by the predetermined distance and the retreat position far away from the folding cylinder peripheral surface. The roller moving means is provided, and the roller moving means is operated based on at least an abnormality detection signal for detecting an abnormality in the folding device, and the paper feed auxiliary roller is moved to the retracted position.

  According to an embodiment of the present invention, when the plurality of continuous sheets that are overlapped are held by a holding needle provided in the folding cylinder and pulled while being wound by the rotation of the folding cylinder, the plurality of superimposed sheets that run are moved. The outer paper of the continuous paper is fed to the downstream side at the same speed as or slightly faster than the speed at which the outer paper is pulled by a roller contacting the continuous paper, and the outer paper side is driven by the holding needle. It makes it possible to follow the traction without difficulty, and eliminates the repetition of integration and sliding that occurs between the inner paper and the outer paper between the adjacent continuous papers that occur in a plurality of stacked continuous papers that travel. It can be slight.

  Therefore, fluttering of the continuous paper that travels due to this and an increase in the length of the piercing hole of the holding needle can be prevented, and further, deformation due to travel delay of the outer paper that contacts the peripheral surface of the roller can be prevented. As a result, the accuracy of the folding position and cutting position can be maintained in a good state, and as a result, high-quality folding products can be manufactured and provided, and the folding apparatus can be operated with high efficiency. It became so.

In particular, in the invention according to claim 2 of the present invention, when an abnormal situation such as a paper jam occurs in the folding device while the folding device is in operation, this abnormality is prevented from spreading or spreading to the rollers. As a result, it has become possible to eliminate the occurrence of unnecessary troubles, so that a highly accurate and stable folding operation can be continuously maintained. In addition to this, it is also possible to provide the roller so that it can be moved to the retracted position during maintenance inspection and paper threading work around the folding cylinder. During the paper threading operation, the roller does not get in the way, and these operations can be performed efficiently.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view showing an outline of a folding device according to the present invention provided with a paper feeding auxiliary mechanism, FIG. 2 is a partially enlarged view of the folding device shown in FIG. 1, and FIG. 4 is a front view showing a configuration of a paper feed assist mechanism that is a main part of the folding apparatus, FIG. 4 is a plan development view of the paper feed assist mechanism shown in FIG. 3, and FIG. 5 is a paper shown in FIG. 3 and FIG. It is a block diagram which shows the control system of a feed assistance mechanism.

  First, a schematic configuration of the folding device according to the present invention will be described with reference to FIGS. In the figure, DR is a drag roller that is driven to rotate, and this drag roller DR overlaps a plurality of continuous papers W printed by a printing device (not shown) on the peripheral surface, and this is applied with a slight running tension. It is generated and sent to a cutting / lateral folding mechanism FD described later. In the vicinity of the drag roller DR, a first slitter SL1 for cutting the continuous paper W into continuous paper W1 and W1 having a width of 1/2 on the peripheral surface of the drag roller DR, and positions on both sides of the first slitter SL1. Then, two second slitters SL2 and SL2 for cutting the continuous papers W1 and W1 cut into the half widths into the continuous papers W2 and W2 with a quarter width on the peripheral surface of the drag roller DR. Is provided. Further, on the downstream side of the drag roller DR, half-width continuous paper W1 and W1 cut by the first slitter SL1 can be folded in half, or the quarter width cut by the second slitter SL2 Are provided with two formers FM and FM which are twisted in the opposite directions to be superposed.

  The slitters SL1, SL2 and SL2 shown in FIG. 1 show a state in which the first slitter SL1 and the second slitter SL2 on the right side are in the operating position and are in a cutting action. SL1, SL2, and SL2 are all movable between the cutting action position and the retracted position, and the width of the continuous paper W to be processed, the position in the axial direction of the drag roller DR on which the continuous paper W to be processed travels, Each position can be selectively set from the two positions according to the shape of the folded product to be manufactured.

  On the downstream side of each former FM, FM is a quarter-width continuous paper W3 folded in half in one former FM or cut in a slitter SL2 and overlapped in the other former FM. Are provided with a plurality of nipping roller pairs NR, NR,... In addition, the continuous paper W2 or W3 guided by the nipping roller pair NR is provided on the downstream side of the nipping roller pair NR provided on the downstream side of each of the formers FM and FM. A transfer roller TR for guiding the continuous paper W3 to the continuous paper W2 side from the other former FM is provided.

  A saw cylinder is provided on the downstream side of the nipping roller pair NRE that superimposes and guides the continuous papers W2 and W3 on the most downstream side in the continuous paper guide unit composed of the pair of nipping rollers NR, NR. A cutting / lateral folding mechanism FD provided with a CC, a folding cylinder FC, and a rod cylinder JC is provided. The most downstream nipping roller pair NRE is opposed to the upper side between the saw cylinder CC and the folding cylinder FC, and is continuously fed above the saw cylinder CC by the nipping roller pair NRE. A paper feed assisting mechanism 1 having a paper feed assisting roller 10 having a peripheral surface capable of contacting the surface of the paper W4 facing the saw cylinder CC, that is, the outer fold surface of the continuous paper W4 is provided.

  The saw cylinder CC, the folding cylinder FC, and the rod cylinder JC of the cutting / lateral folding mechanism FD are folded between the saw cylinder CC and the rod cylinder JC so that the axes thereof are horizontal and perpendicular to the axis of the drag roller DR. Two cylinders that are adjacent to each other with the cylinder FC are provided close to each other.

  The saw cylinder CC is provided with a saw blade CB that protrudes from the circumferential surface of the saw cylinder CC and is parallel to the axis at each position that bisects the circumferential surface. On the other hand, the folding cylinder FC, for example, has a circumference of 2.5 times the circumference of the saw cylinder CC, and a saw blade receiver parallel to the axis at each position dividing the circumferential surface of the folding cylinder FC into five equal parts. RB is provided. Further, on the peripheral surface of the folding cylinder FC, an insertion blade FB parallel to the axis is provided at each intermediate position that bisects the space between the saw blade receivers RB so as to protrude from the peripheral surface or to be able to appear and retract. Further, a plurality of saw blade receivers RB of the folding cylinder FC that are capable of appearing at the same time in the vicinity of the peripheral surface of the folding cylinder FC in the rotational direction and at the downstream side in the direction parallel to the axis. The holding needle ND is provided.

  The saddle drum JC has substantially the same diameter as the folding drum FC, and each of the flange drums JC is provided with grooves (not shown) that are open at respective positions dividing the peripheral surface into five equal parts. A gripping mechanism JW is provided in the groove.

The saw cylinder CC, the folding cylinder FC, and the saddle cylinder JC are rotated at substantially the same peripheral speed so that the circumferential surfaces facing each other are displaced in the same direction.

  In addition, when the saw cylinder CC, the folding cylinder FC, and the rod cylinder JC are rotated, each holding needle ND of the folding cylinder FC has a circumferential surface on which the holding needle ND protrudes in the space between the saw cylinder CC and the folding cylinder FC. The side of the continuous paper W4 that protrudes from the peripheral surface just before reaching the entrance and that is in contact with the paper feed auxiliary roller 10 and faces the folding cylinder FC (the inner paper IP side) faces the saw cylinder CC (the outer paper) In this state, it passes through the opposing position (closest position) of the saw cylinder CC and the folding cylinder FC and the opposing position (closest position) of the folding cylinder FC and the saddle cylinder JC, and its rotational direction When the trailing blade FB on the trailing side reaches the closest position between the folding cylinder FC and the saddle cylinder JC, the insertion blade FB is immersed below the peripheral surface to give up holding.

  Further, the saw blade CB of the saw cylinder CC meshes with the saw blade receiver RB of the folding cylinder FC at the closest position of the saw cylinder CC and the folding cylinder FC, and the holding needle ND in the continuous paper W4 that runs there is held. The cutting paper W5 held by the holding needle ND on the rotation direction preceding side is formed by cutting the vicinity of the position in the rotation direction leading side.

  Further, the insertion blade FB of the folding cylinder FC enters the groove that opens in the circumferential surface of the casing cylinder JC at the closest position between the folding cylinder FC and the casing cylinder JC, and reaches the gripping mechanism JW. The cutting paper W5 on the surface is fed by the gripping mechanism JW, and the cutting paper W5 is provided so as to be folded (folded horizontally) in parallel with the cutting edge by the saw blade CB.

  The paper feed assist mechanism 1 is configured as shown in FIGS. 3 and 4, and includes a paper feed assist roller 10, roller driving means 20 that rotationally drives the paper feed roller 10, and the paper feed assist roller 10 as a folding cylinder FC peripheral surface. There is provided a roller moving means 30 for moving so as to be closer to the distance. In addition to these, a swell detection means 40 is provided that detects a swell deformation W6 of the outer paper OP of the continuous paper W4 in the vicinity of the paper feed auxiliary roller 10 and upstream in the running direction when the folding device is in operation.

  The paper feed assisting roller 10 has a distance between the circumferential surface of the paper feeding auxiliary roller 10 and the circumferential surface of the folding cylinder FC from the circumferential surface of the folding cylinder FC of the holding needle ND provided on the folding cylinder FC. A predetermined interval smaller than the protruding dimension is provided, and the front surface of the holding needle ND protruding from the folding cylinder FC when it is in the working position can be received on the peripheral surface of the paper feed auxiliary roller 10. As shown, grooves 11, 11,... That circulate around the circumferential surface are provided corresponding to the protruding positions of the holding needle ND. The paper feed assisting roller 10 has both end shafts rotatably supported at one end of the bell crank arms 31 and 31, and one end shaft is provided with a pulley 21 with driven teeth. ing.

  The roller driving means 20 includes a motor 28 attached to one frame F1 via a bracket 29, a pulley 27 with drive teeth attached to an output shaft of the motor 28 so as to be rotatable integrally with the output shaft, The first intermediate toothed pulley 25 rotatably attached to the intermediate shaft 26 attached to the frame F1 and the second intermediate toothed rotatably attached to the intermediate shaft 26 integrally with the first intermediate toothed pulley 25. One of the toothed pulley 24, the first toothed belt 23 stretched between the pulley 27 with the driving tooth and the pulley 25 with the first intermediate tooth, the pulley 24 with the second intermediate tooth, and the paper feeding auxiliary roller 10. And a second toothed belt 22 stretched between a driven toothed pulley 21 provided on the end shaft of the second toothed belt.

  In the illustrated embodiment, the rotation of the electric motor 28 is controlled by the control system 50 shown in FIG. 5, and the paper feeding auxiliary roller 10 is moved from the center of the folding cylinder FC to the paper feeding position at the working position. A virtual cylinder IM having a radius that is the sum of the distance to the circumferential surface of the auxiliary roller 10, that is, the radius of the folding cylinder FC and the distance between the circumferential surface of the folding cylinder FC and the circumferential surface of the auxiliary roller 10 at the working position is folded. It is rotationally driven so as to have a peripheral surface speed equal to or higher than the peripheral surface speed of the virtual cylinder IM (see FIG. 2) when rotated integrally with the cylinder.

  The roller moving means 30 includes a pair of bell crank arms 31 and 31 that rotatably support both end shafts of the paper feed auxiliary roller 10 at one end portion, and output shafts at the other end portions of the bell crank arms 31 and 31, respectively. The hydraulic cylinders 33 and 33 are connected to the frame F1 or the frame F2 through the brackets 34, respectively, and the main body tails are connected to the frame F1 or the frame F2, respectively. An intermediate portion of one bell crank arm 31 of the pair of bell crank arms 31 is connected to the intermediate shaft 26 attached to the one frame 1, and an intermediate portion of the other bell crank arm 31 is connected to the intermediate shaft. 26 is supported by a support shaft 32 having an axis common to the other frame F2 and attached to the other frame F2 so as to be angularly displaceable. In the illustrated embodiment, the fluid pressure cylinders 33 and 33 are extended and retracted by the control system 50 shown in FIG. 5 via a valve (not shown) that switches the fluid supply to the fluid pressure cylinders 33 and 33. Is to be controlled.

  The control system 50 is configured as shown in FIG. 5, and has a paper feed assist mechanism control unit 51. The paper feed assist mechanism control unit 51 controls the overall operation of the rotary press including the folding device. The press is connected to a rotary press operation control unit 60, a swelling detection unit 40, and an electric motor 28 of a roller driving unit 20 that drives the roller 10. The paper feed assist mechanism control unit 51 outputs a drive signal output unit 52 that outputs a drive signal of the electric motor 28 based on the operation data from the rotary press operation control unit 60 and the drive signal output by the drive signal output unit 52. It has the correction | amendment part 53 correct | amended based on the detection signal of the swelling detection means 40. FIG.

  In the illustrated embodiment, the correction unit 53 is connected to a manual correction unit 54 so that the operator can manually correct the drive signal. Further, the rotary press operation control unit 60 is connected to the paper feed assist mechanism control unit 51, and switches the fluid supply to the fluid pressure cylinders 33, 33 of the roller moving unit 30, and is located anywhere in the folding device (not shown). The width dimension of the continuous paper W connected to the folding device abnormality detecting means 62 composed of several detectors for detecting the occurrence of trouble such as paper jam and processed during the operation of the rotary press. , Items related to the number of sheets, thickness, and surface condition (for example, paper quality or brand information related to the surface friction coefficient or surface friction coefficient), and the axial position of the drag roller DR when the continuous paper W passes the drag roller DR. It has an input means 61 that can input operation instructions such as operating conditions such as operation, stop, acceleration / deceleration, etc., such as how to use each of the first and second slitters SL1, SL2, SL2 .

  Next, the operation according to this configuration will be described. The rear rotary press having the operating condition input by the input means 61 is operated. Then, several continuous papers W printed by a printing apparatus (not shown) reach the drag roller DR and are overlapped, and the first slitter SL1 is divided into two equal parts in parallel to the traveling direction and has a half width. One half width continuous paper W1 is made into a continuous paper W3 folded in parallel with the running direction at the center in the width direction by one former FM, and the other half. The one-width continuous paper W1 is made into a half-width continuous paper W1, and at the same time, it is further divided into two by the second slitter SL2 in parallel with the running direction on the drag roller DR, and a quarter-width continuous paper. The quarter-width continuous papers W2 and W2 are twisted in the opposite directions and overlapped by the other former FM.

  The continuous paper W3 and the continuous paper W2 are passed through the nipping roller pair NR and the transfer roller TR to the downstream nipping roller pair NRE, and the continuous paper W2 is the nipping roller pair NR. Through the most downstream nipping roller pair NRE, the two are overlapped by the most downstream nipping roller pair NRE to form continuous paper W4, and the saw cylinder CC of the cutting / lateral folding mechanism FD provided below And the folding cylinder FC.

  Note that the continuous paper W4 that is run between the saw cylinder CC and the folding cylinder FC has a width dimension of the continuous paper W that is used in its operation, and when the continuous paper W passes through the drag roller DR, Depending on where the axial position passes, how to select the combination of usage of the first and second slitters SL1, SL2 and SL2, that is, depending on the shape of the folded product to be manufactured, The one-width continuous paper W1 is folded in half to form only one continuous paper W3, the two continuous paper W3 are overlapped, and the half-width continuous paper W1 is further divided into two equal quarters. It may be a form composed of only the continuous paper W2 having one width, a form in which the folded continuous paper W3 is arranged on the saw cylinder CC side, and is superposed on the continuous paper W2 having a quarter width.

  The continuous paper W4 traveled between the saw cylinder CC and the folding cylinder FC of the cutting / lateral folding mechanism FD is an entrance between the saw cylinder CC and the folding cylinder FC, and the surface on the saw cylinder CC side. That is, the outer paper OP comes into contact with the peripheral surface of the paper feed auxiliary roller 10 and is at least from the center of the folding cylinder FC to the peripheral surface of the paper feed auxiliary roller 10 in the operating position by the electric motor 28 controlled by the control system 50. By the peripheral surface of this paper feed auxiliary roller 10 that is rotationally driven so as to have the same peripheral speed as the peripheral surface speed of this virtual cylinder IM when the virtual cylinder IM having a radius as a radius rotates together with the folding cylinder. The paper feed assisting action is received in the running direction.

  Hereinafter, the paper feed assisting action of the paper feed assisting mechanism 1 will be described.

  The continuous paper W4 traveled between the saw cylinder CC and the folding cylinder FC is sandwiched between the most downstream nipping roller pair NRE driven and rotated, and the inner paper IP and the outer paper OP are at the same speed. The continuous paper W4 is fed out and reaches the paper feeding assisting roller 10 at the working position, and the continuous paper W4 is pierced by the holding needle ND that has been rotated to this position while protruding from the peripheral surface of the folding cylinder FC. When the holding needle ND is pierced, the continuous paper W <b> 4 is controlled to escape from the side facing the saw cylinder CC, that is, the outer paper OP, by the peripheral surface of the paper feed auxiliary roller 10.

  Accordingly, the outer paper OP is folded at a distance from the center of the folding cylinder FC in the holding needle ND to the circumferential surface of the paper feeding auxiliary roller 10 at the working position, that is, a distance from the center of the folding cylinder FC to the circumferential surface of the folding cylinder. It is held at a position of the sum of the distance between the peripheral surface and the auxiliary roller peripheral surface, and is wound around the peripheral surface of the folding cylinder FC by the rotation of the folding cylinder FC. The outer paper OP when wound around the circumferential surface of the folding cylinder FC is the angle at which the folding cylinder FC is displaced on the circumferential surface having a radius from the axis of the folding cylinder FC to the position held by the holding needle ND. The distance around the axis is displaced, and the displacement of this distance is the rotational circumference when the circumferential surface having a radius at least to the position where the holding needle ND holds the outer paper OP rotates together with the folding cylinder FC. Displacement at surface speed is required.

  Therefore, the rotation speed at the position where the paper feeding auxiliary roller 10 holds the outer paper OP of the holding needle ND, which is the speed at which the outer paper OP is pulled, is at least the speed at which the outer paper OP is drawn. The virtual cylinder IM whose radius is the distance from the center to the peripheral surface of the paper feed assisting roller 10 at the working position rotates at the same speed as the peripheral surface speed of the virtual cylinder IM when the virtual cylinder IM rotates together with the folding cylinder. Paper feeding is assisted so that the outer paper OP can follow a speed faster than the peripheral speed of the folding cylinder FC by the contact frictional force with the paper OP.

  At this time, since the friction coefficient of the surface of the outer paper OP that contacts the paper feeding auxiliary roller 10 differs depending on the type of paper (brand), the size of the printing area, the thickness of the ink, the overlapping state, etc., the paper feeding auxiliary roller When the peripheral surface speed for rotating 10 is constant, there may be a case where sufficient paper feeding assisting action cannot be obtained. Therefore, rotation driving of the paper feeding assisting roller 10 is performed in accordance with the paper feeding assisting action situation of the paper feeding assisting roller 10. A configuration in which the speed can be changed and adjusted with the peripheral surface speed of the virtual cylinder IM when the virtual cylinder IM rotates integrally with the folding cylinder FC as the minimum speed is extremely useful.

  For example, as described above as a problem to be solved by the present invention, if the paper feeding assisting function of the paper feeding assisting roller 10 is insufficient, the paper feeding assisting roller 10 exerts a braking action on the outer paper OP and smoothes it. Travel is hindered, and the amount of travel delay gathers at an upstream position in the vicinity of the contact position of the outer paper OP with the peripheral surface of the paper feed assisting roller 10 to form a bulge deformation W6.

  Therefore, in the present invention, the bulge deformation W6 is detected by the bulge detection means 40, the detection signal is taken into the correction unit 53 of the paper feed assist mechanism control unit 51, and the drive signal output from the drive signal output unit 52 is corrected. The driving speed of the paper feeding auxiliary roller 10 by the electric motor 28 of the roller driving means 20 is accelerated and changed so that a good paper feeding action can be obtained.

  At this time, instead of or in addition to the bulge detection means 40 of this configuration, manual correction means 54 is provided in connection with the correction section 53 of the paper feed assist mechanism control section 51 (see FIG. 5). However, it is of course possible to change the driving speed of the paper feed assisting roller 10 by the electric motor 28 of the roller driving means 20 while confirming the status of the paper feed assisting action of the paper feed assisting roller 10.

  The leading ends of the holding needles ND that have pierced the continuous paper W <b> 4 whose escape has been restricted by the paper feed auxiliary roller 10 are received in the grooves 11 provided so as to go around the circumferential surface of the paper feed auxiliary roller 10.

  The paper feed assisting action to the outer paper OP by the peripheral surface of the paper feed assisting roller 10 is transmitted while weakening the influence of the adjacent continuous paper W4 due to the contact frictional force between the continuous papers W4 that are overlapped. The stacked continuous paper W4 and the inner paper IP to the outer paper OP travel almost integrally.

  The continuous paper W4 held by the holding needle ND and wound around the circumferential surface by the rotation of the folding cylinder FC is pulled slightly before the holding needle ND reaches the opposite position of the saw cylinder CC and the folding cylinder FC, that is, the closest position. Further, the saw blade CB of the saw cylinder CC and the saw blade receiver RB of the folding cylinder FC are engaged with each other at the closest position of the saw cylinder CC and the folding cylinder FC, and the traveling direction leading side of the position held by the holding needle ND is cut. Then, holding the continuous paper W4 by the holding needle ND and cutting the continuous paper W4 with the saw blade CB and the saw blade receiver RB engaged with each other, in the illustrated embodiment, the folding cylinder FC is 5 at each operating position. The cut paper W5 is sequentially formed each time it rotates one minute, and the leading side in the traveling direction is held by the holding needle ND.

  In the illustrated embodiment, the cutting paper W5 is rotated approximately one-tenth after the holding needle ND that holds the cut paper W5 passes through the closest position between the folding cylinder FC and the saddle cylinder JC, and the subsequent side in the rotation direction. When the insertion blade FB reaches the closest position between the folding cylinder FC and the casing cylinder JC, a groove (not shown) is opened in the circumferential surface of the casing cylinder JC by the insertion blade FB at the central portion in the winding direction of the folding cylinder FC. 1) and is folded in parallel with the cutting edge of the saw blade CB at the center portion, and is horizontally folded, and is gripped and held by the gripping mechanism JW provided in the groove. Further, at the same time as the insertion operation of the cutting paper W5 into the groove by the insertion blade FB or at a slightly early timing, the holding needle ND is immersed below the peripheral surface of the folding cylinder FC, and the cutting paper W5 is advanced in the traveling direction. Give up and release this.

  The insertion operation of the cutting paper W5 by the insertion blade FB, the holding and holding operation of the cutting paper W5 by the gripping mechanism JW, and the abandonment of holding the cutting paper W5 by the holding needle ND are both performed by the folding cylinder FC and the saddle cylinder JC. Every time one-fifth rotation, the folding cylinder FC and the saddle cylinder JC are repeated at the closest position of the folding cylinder FC and the peripheral surface of the folding cylinder FC on the preceding side in the rotation direction by one-tenth rotation from the closest position. The cut sheets W5 held by the gripping mechanism JW are sequentially conveyed to the unshown unloading mechanism side by the rotation of the flange cylinder JC.

  While the folding device described above is in operation, the occurrence of any abnormality such as clogging of the continuous paper W4 that travels or the cut paper W5 that is transported and moved in the folding device is detected. When the means 62 detects and outputs a detection signal, the rotary press operation control unit 60 receiving this signal outputs a signal for switching a valve (not shown) of the roller moving means 30 to supply fluid to the fluid pressure cylinders 33 and 33. Switch.

  By switching the fluid supply, the fluid pressure cylinders 33 and 33 retract the output shaft to angularly displace the bell crank arms 31 and 31 around the axis of the intermediate shaft 26 and the support shaft 32, respectively. The auxiliary paper feed roller 10 supported by the end shaft is moved from the operating position to the retracted position, and the peripheral surface of the auxiliary paper feed roller 10 is moved away from the peripheral surface of the folding cylinder FC. The rotary press operation control unit 60 that has received the signal from the folding device abnormality detection means 62 controls to stop the rotary press simultaneously with the switching of the valve. The control corresponding to the detection signal of the folding device abnormality detecting means 62 can prevent the influence of the abnormality occurring in the folding device from spreading to the paper feeding assist mechanism 1 including the paper feeding assisting roller 10. It is possible to prevent further deterioration of the abnormality occurring in the folding device.

It is a front view which shows the outline of the folding apparatus based on this invention provided with the paper feeding assistance mechanism. It is the elements on larger scale of the folding apparatus shown in FIG. It is a front view which shows the structure of the paper feeding assistance mechanism which is the principal part of the folding apparatus which concerns on this invention. FIG. 4 is a plan development view of the paper feed assist mechanism shown in FIG. 3. FIG. 5 is a block diagram showing a control system of the paper feed assist mechanism shown in FIGS. 3 and 4.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Paper feed auxiliary mechanism, 10 ... Paper feed auxiliary roller, 11 ... Groove, 20 ... Roller drive means, 21 ... Pulley with driven tooth, 22 ... Second toothed belt, 23 ... First toothed belt, 24 ... First 2 pulley with intermediate teeth, 25 ... pulley with first intermediate teeth, 26 ... intermediate shaft, 27 ... pulley with drive teeth, 28 ... electric motor, 29 ... bracket, 30 ... roller moving means, 31 ... bell crank arm, 32 ... support Axis 33, fluid pressure cylinder 34, bracket 40, swelling detection means 50, control system 51, paper feed assist mechanism control section 52, drive signal output section 53, correction section 54, manual correction means 60 ... Rotary press operation control unit, 61 ... Input means, 62 ... Folding device abnormality detection means, CB ... Saw blade, CC ... Saw drum, DR ... Drag roller, FB ... Insert blade, FC ... Folding drum, FD ... Cutting・ Horizontal folding Mechanism, F1, F2 ... Frame, FM ... Former, IM ... Virtual cylinder, IP ... Inner paper of continuous paper W4, JC ... Claw cylinder, JW ... Bare mechanism, ND ... Holding needle, NR ... Nipping roller pair, NRE ... downstream nipping roller pair, OP ... outer paper of continuous paper W4, RB ... saw blade receiver, SL1, SL2 ... slitter, TR ... transfer roller, W ... continuous paper, W1 ... half-width continuous paper, W2 ... 4 1 / width continuous paper, W3 ... continuous paper folded in parallel with the running direction, W4 ... continuous paper finally overlapped by the most downstream nipping roller pair NRE, W5 ... cut paper, W6 ... Swelling deformation.

Claims (2)

While feeding a plurality of continuous paper with a unit printing area of a predetermined length aligned and aligned with the opposing space of the saw cylinder and the folding cylinder rotating by displacing the opposed peripheral surfaces in the same direction with a nipping roller, A plurality of holding needles juxtaposed along a line parallel to the axis of the folding cylinder on the leading end side of the unit printing region of the superimposed continuous paper are pierced and held by protruding from the circumferential surface of the folding cylinder. The continuous paper is pulled while being wound around its peripheral surface by the rotation of the folding cylinder, while the saw blade provided on the saw cylinder and the saw blade receiver provided on the folding cylinder are bitten at the opposite positions of these two cylinders, In the folding device that cuts the continuous paper on the preceding side near the holding needle puncture position in the subsequent unit printing area, and folds the cut paper of the unit printing area length parallel to the cutting edge,
Protrusion from the folding cylinder peripheral surface of the holding needle that holds the plurality of continuous sheets overlapped with respect to the protruding position of the holding needle on the circumferential surface of the folding cylinder that is rotationally displaced toward the opposing space or the downstream position in the vicinity thereof. The peripheral surfaces are opposed to each other with a predetermined interval so as to be smaller than the size, and the peripheral surface can receive the tip side of the holding needle, and the plurality of continuous papers stacked are folded. A paper feed auxiliary roller provided so as to come into contact with the outermost surface of the plurality of continuous papers stacked when being pulled while being wound around the peripheral surface of
The paper feed is performed so that a virtual cylinder that shares a rotation center with the folding cylinder and has a radius equal to the sum of the folding cylinder radius and the predetermined interval has a peripheral surface speed that is equal to or higher than the peripheral surface speed when the imaginary cylinder rotates together with the folding cylinder. Consisting of roller drive means to drive the auxiliary roller,
The driving speed of the paper feeding auxiliary roller by the roller driving means can be changed according to the paper feeding auxiliary action status of the paper feeding auxiliary roller ,
A bulge detecting means is provided for detecting a bulge deformation at an upstream position in the vicinity of the contact position with the peripheral surface of the paper feed auxiliary roller at the contact surface with the peripheral surface of the paper feed auxiliary roller of a plurality of stacked continuous sheets. A folding device characterized in that the driving speed of the paper feeding auxiliary roller by the roller driving means can be changed based on the detection signal . Roller moving means for moving the peripheral surface of the paper feed auxiliary roller between the action position separated from the folding cylinder peripheral surface by the predetermined distance and the retreat position far away from the folding cylinder peripheral surface is provided. ,
2. The folding apparatus according to claim 1, wherein the roller moving means is operated based on at least an abnormality detection signal for detecting an abnormality in the folding apparatus to move the paper feed auxiliary roller to the retracted position .

Images