JP2005081557A - Rotary press - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary press with such advantages that the printing length can be made variable by replacing a plate cylinder and a printing operation can be rapidly dealt with, even when the plate cylinder is replaced with the one of a different diameter. <P>SOLUTION: In this rotary press whose printing length is made variable by replacing the plate cylinder 9 with the one of different diameter, an arm 91a having a supporting shaft 94a of the plate cylinder 9a pivoted in an intermediate part, which is mounted in a rocking fashion by axially supporting one end of the arm 91a; and a position adjusting member 161 configured in an advancing/receding manner in a direction intersecting with the rocking direction of the arm 91a, are provided. In addition, the position adjusting member 161 is equipped with a plurality of arm contacting surfaces which moderately tilt in the advancing/receding direction and regulate the position of the arm 91a in the rocking direction while coming into contact with the arm 91a so as to correspond with a plurality of the plate cylinders 9a of different diameters, Besides, a connecting surface is provided which interconnects the arm connecting surfaces so as to achieve a mutual smooth continuation of the latter. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a rotary printing press capable of changing a printing length by exchanging a printing cylinder.

  FIG. 6 is a schematic diagram showing an example of the configuration of the rotary printing press. In this rotary printing press, a web (paper) 11 that is a substrate to be printed is wound in a roll shape and disposed in the paper feeding device 1, and the web 11 continuously fed from the paper feeding device 1 is printed by the printing device 3. Printed. When the printing apparatus 3 is a printing apparatus that performs multicolor printing, printing units 7a to 7d corresponding to the number of printing colors are provided. FIG. 6 shows the case of four-color printing. The printed web 11 is conveyed to the folding machine 6 by the web pass device 5, cut to an appropriate length by the folding machine 6, folded, and then discharged as a folded book.

  FIG. 7 is a schematic diagram showing an example of a general printing unit 7 (printing units 7a to 7d in FIG. 6) provided in a rotary printing press. The printing unit 7 transfers an image of the inking device 10 for supplying ink, a dampening device 12 for supplying dampening water, a plate cylinder 8 equipped with a plate for forming a print image, and the plate cylinder 8 to the web 11. For example, a blanket cylinder 9 as a transfer cylinder. Thereby, the fountain solution supplied from the dampening device 12 adheres to the non-picture portion of the plate, and the ink supplied from the inking device 10 adheres to the pattern portion of the plate. Then, only the ink attached to the pattern portion is transferred to the surface of the blanket cylinder 9 and then transferred to the web 11 which is a printing object, thereby performing printing.

  Further, in the rotary printing press, an appropriate printing pressure is applied between the plate cylinder 8 and the blanket cylinder 9 and between the blanket cylinder 9 and the blanket cylinder 9 so that the ink is appropriately transferred during printing. It has become. Further, when printing is interrupted, the plate cylinder 8 and the blanket cylinder 9 are moved to form gaps between the plate cylinder 8 and the blanket cylinder 9 and between the blanket cylinder 9 and the blanket cylinder 9. It is supposed to escape.

  FIG. 8A and FIG. 8B show an example of a device that serves both as adjustment of printing pressure and cylinder escape. In general, the printing cylinder, that is, the shaft 100 of the plate cylinder 8 or the blanket cylinder 9 is supported by an eccentric bearing 101. By rotating the eccentric bearing 101, the interval between the printing cylinders is adjusted to adjust the printing pressure. And torso escape. Here, one end portion of a lever 102 is fixed to the eccentric bearing 101, and a pin 104 having a screwing hole (female screw) 103 is provided at the other end portion of the lever 102. An adjusting shaft 107 that is screwed into the screwing hole 103 is connected to an output shaft 106 of a motor 105 with a speed reducer. Thus, the eccentric bearing 101 is rotated as indicated by an arrow F in FIG. 8A by driving the motor 105 to rotate the adjustment shaft 107. Such a technique is disclosed in, for example, Patent Document 1 and Patent Document 2. Some motors are mechanically operated manually without using the motor 105 described above.

Although not shown, Patent Document 3 provides an eccentric bearing for attaching / detaching the cylinder on the outer diameter side of the bearing of the printing cylinder, and adjusting the printing pressure on the outer diameter side of the eccentric bearing for attaching / detaching the cylinder. There is disclosed a technique in which an eccentric bearing is provided and the two eccentric bearings are rotated by separate actuators to adjust the printing pressure and to release the cylinder.
Furthermore, as shown in FIG. 9, Patent Document 4 describes a fixed roll 110 that is held so as to rotate at a fixed position, a movable roll 111 that is held by a swingable arm 112 and contacts the fixed roll 110, In an apparatus provided with a pressing device 113 that swings the arm 112 and presses the moving roll 111 against the fixed roll 110, the shaft 114 of the moving roll 111 is pressed in a direction that intersects the contact pressure direction between the rolls 110 and 111. A support bed 115 that supports the pressing force of the device 113, a wedge member 116 provided between the support bed 115 and the shaft 114, and a load detector 117 that detects a load applied to the support bed 115 are provided. By changing the position of the wedge member 116 based on the detection information from the load detector 117, the fixed roll 110 and the moving roller 110 are moved. Technique printing pressure between the Le 111 is adjusted to a desired printing pressure is disclosed.
JP-A-6-297777 JP-A-9-76453 JP 2001-353843 A Japanese Patent No. 2715389

  By the way, in a rotary printing machine, although the printing width can be changed by changing the width of the web 11, the printing length cannot be changed. That is, the printing length in the rotary printing press is determined by the circumferential length of the plate cylinder 8 and the blanket cylinder 9, but the diameter of the plate cylinder 8 and the blanket cylinder 9 cannot be changed in a general rotary printing press. This is one of the drawbacks of a rotary printing machine, in which a sheet-fed printing machine can freely change the width and length of printing paper. As an improvement measure to overcome this disadvantage, a variable cut-off rotary printing press that can change the printing length by replacing the printing cylinder, that is, the plate cylinder 8 or the blanket cylinder 9 with a different diameter is proposed. However, when the printing cylinder 8 or the blanket cylinder 9 having a different diameter is replaced as described above, the printing pressure changes, so that it is necessary to readjust the printing pressure.

  However, in the techniques of Patent Documents 1 to 3 described above, the printing pressure can be finely adjusted by the eccentric bearing. However, when the printing cylinder 8 and the blanket cylinder 9 having different diameters are used, the diameter of the printing cylinder is used. Since it is necessary to move the barrel by the amount of change, the amount of eccentricity must be further increased. As a result, the amount of movement of the eccentric bearing becomes very large, and it is structurally difficult to install.

In the technique of Patent Document 4, when the printing pressure is finely adjusted, it is necessary to make the inclination angle θ ₁₀ of the wedge member 116 shown in FIG. 9 as small as possible. However, for example, when the moving roll 111 is replaced with one having a larger diameter, the position of the shaft 114 of the moving roll 111 moves greatly upward, but the shaft 114 is supported by the fine adjustment wedge member 116 at the moving position. In order to achieve this, the wedge member 116 must be moved significantly, and in reality, it cannot be established due to the configuration of the printing press. Therefore, it is practically unsuitable for adjusting the printing pressure in a variable cutoff rotary printing press.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a rotary printing machine that can quickly cope with a change in printing cylinder to one having a different diameter.

  For this reason, the rotary printing press according to the first aspect of the present invention is a rotary printing press in which the printing length can be changed by exchanging the printing cylinder with one having a different diameter. An arm having a support shaft for the printing cylinder pivotally attached to an intermediate portion; and an arm abutting surface for abutting the arm to restrict the position of the arm in a swinging direction. So that the arm contact surface can continuously and variably adjust the restricting position of the arm in the swinging direction with the forward / backward movement. A position adjusting member that is disposed so as to be gently inclined with respect to the advancing and retreating direction. The position adjusting member has a plurality of different diameters on the arm contact surface on the surface facing the arm. A plurality of print cylinders are provided corresponding to the printing cylinder. Is characterized in that it includes a connecting surface that connects to continuously smoothly between mutual arm contact surface.

  A rotary printing press according to a second aspect of the present invention is the rotary printing press according to the first aspect, further comprising an actuator for driving the arm in a swinging direction on the other end side of the arm, and the swinging direction of the arm. The arm is moved by the actuator, and the arm swinging direction restricting position is finely adjusted by moving the position adjusting member forward and backward to adjust the support shaft of the printing cylinder to a predetermined position. It is said.

According to a third aspect of the present invention, in the rotary printing press according to the first or second aspect, the adjustment of the position of the arm in the swinging direction is performed by pressing the arm contact surface with the actuator, It is determined by the position of the position adjusting member in the advancing / retreating direction.
The rotary printing press according to a fourth aspect of the present invention is the rotary printing press according to any one of the first to third aspects, wherein a roller follower is provided at a portion of the arm that contacts the arm contact surface. It is characterized by being.

  A rotary printing press according to a fifth aspect of the present invention is the rotary printing press according to any one of the first to fourth aspects, wherein the printing cylinder is provided two above and below so as to contact each other, and Each of the two printing cylinders is provided with the arm, and the position adjusting member is provided between the two arms, and the two arms are arranged so that the positions of the two arms can be adjusted simultaneously. Correspondingly, the arm contact surfaces are provided on the upper and lower sides, respectively.

A rotary printing press according to a sixth aspect of the present invention is the rotary printing press according to the fifth aspect, wherein the two printing cylinders are blanket cylinders that transfer a pattern across a web.
According to a seventh aspect of the present invention, there is provided a rotary printing press according to the sixth aspect, wherein the rotary printing press according to the sixth aspect is provided with a plate cylinder that abuts against the blanket cylinder, and is pivotably supported at one end thereof. A plate cylinder arm on which a support shaft of the plate cylinder is pivotally mounted, and a plate cylinder arm abutting surface that abuts the plate cylinder arm and regulates the position of the plate cylinder arm in the swinging direction. In addition, a plate cylinder position adjusting member configured to be movable back and forth in the same direction as the swing direction of the plate cylinder arm, and the plate cylinder arm in the swing direction on the other end side of the plate cylinder arm. And the plate cylinder arm is moved in the swing direction by the plate cylinder actuator, and the position of the plate cylinder arm in the swing direction is finely adjusted for the plate cylinder. The plate cylinder is supported by moving the position adjustment member back and forth. It is characterized by adjusting to a predetermined position.

  According to an eighth aspect of the present invention, in the rotary printing press according to the seventh aspect, a roller follower is provided at a portion of the plate cylinder arm that contacts the plate cylinder arm contact surface. It is characterized by.

  According to the rotary printing press of the present invention, when the printing cylinder is changed to one having a different diameter, the position of the printing cylinder is determined by the arm abutting on the arm abutting surface corresponding to the replaced diameter, and the position adjustment is further performed. The position of the printing cylinder can be finely adjusted by moving the member in the forward / backward direction. Thereby, for example, it is possible to finely adjust the printing pressure of two printing cylinders that are in contact with each other. As described above, even when the printing cylinder is changed to one having a different diameter, it is possible to respond quickly.

Embodiments of the present invention will be described below with reference to the drawings.
An embodiment of the present invention will be described with reference to FIGS. 1 is a schematic diagram showing the internal configuration of the printing unit, FIG. 2 is a detailed side view of the printing unit shown in FIG. 1, FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2, and FIG. 4B is a cross-sectional view taken along arrow B-B in FIG. 4, FIG. 4B is a view taken along arrow B _{1 in} FIG. 4A, FIG. 4C is a view taken along arrow B _{2 in} FIG. ) is taken along line C-C sectional view of FIG. 2, FIG. 5 (b) is a C ₁ arrow view of FIG. 5 (b). In addition, about the site | part or member (it does not mean the site | part or member which has the same structure) corresponding to the conventional thing mentioned above, the same code | symbol is attached | subjected and shown in the figure.

As shown in FIG. 1, the printing unit of the rotary printing press according to the present embodiment is configured as a duplex printing unit that performs printing on both sides of the web 11, and the ink devices 10 a and 10 b are respectively provided on the upper side and the lower side of the web 11. And dampening devices 12a and 12b. Each inking device 10a, 10b is provided with plate cylinders 8a, 8b and blanket cylinders 9a, 9b, respectively.
In the rotary printing press of this embodiment, as shown by the solid line and the broken line in FIG. 1, the plate cylinder 8 and the blanket cylinder 9 (hereinafter, the plate cylinder and the blanket cylinder may be collectively referred to as a printing cylinder) have a diameter. It can be changed to a different one. In addition, in each drawing including FIG. 1, suffixes “a” and “b” after the reference numerals are for distinguishing the upper side and the lower side from the web 11, and a is an upper part or member. And b indicates the lower side. In the following description, a and b are added when distinguishing the upper side and the lower side, but unless otherwise distinguished, a and b are omitted, and each part or member is indicated only by a reference numeral. . Further, in the drawings including FIG. 1, parts and members having suffixes “′” and “″” after the reference numerals are parts and members having the same reference numerals without suffixes “′” and “″”. It shows after the shape and position change.

  As shown in FIG. 3, the printing unit is provided with a pair of side frames 13m and 13d at intervals, and the printing cylinders 8 and 9 are arranged between the side frames 13m and 13d. A moving frame 25 is disposed outside the one side frame (first side frame) 13m. Whereas the side frames 13m and 13d are fixed in position, the moving frame 25 can be moved by means not shown. When the printing cylinder is replaced, the moving frame 25 is moved to move the printing cylinder. It is supposed to exchange. In addition, the description about the printing cylinder exchange method is abbreviate | omitted here.

  The printing cylinders 8 and 9 include shafts 802 and 902 and sleeves 801 and 901 fitted to the shafts 802 and 902. One ends of the shafts 802 and 902 are attached to a side frame (second side frame) 13d. The support arms (second support devices) 85 and 95 are supported by bearings 86 and 96, and the other ends of the shafts 802 and 902 are attached to the moving frame 25. 91 is supported via bearings 84 and 94.

  As shown in FIG. 2, the support arms 81 and 91 on the moving frame 25 side support the bearings 84 and 94 of the printing cylinders 8 and 9 at their center portions (intermediate portions). One ends of the support arms 81 and 91 extending from the central portion are rotatably attached (pivotally supported) to shafts 82 and 92 provided on the moving frame 25, and the other ends are connected to the rods of the actuators 83 and 93 with pins 810, Combined at 910.

  The actuators 83 and 93 are rotatably attached to support pins 831 and 931 provided on the moving frame 25. As the actuators 83 and 93, compressed air pressure, hydraulic pressure, an electric motor, or the like can be used. In the figure, a hydraulic cylinder that uses hydraulic pressure is shown. With such a configuration, by operating the actuators 83 and 93, the support arms 81 and 91 are rotated about the shafts 82 and 92, and the positions of the bearings 84 and 94, that is, the centers of the printing cylinders 8 and 9 are obtained. The position can be changed. The description of the structure of the support arms 85 and 95 on the side frame 13d side is omitted, but the structure may be the same as that of the support arms 81 and 91 on the movable frame 25 side. You may make it a structure which follows according to rotation.

  Further, a roller follower 911a is pivotally attached to an end portion side of the support arm 91a to which the pin 910a is coupled and is opposed to the support arm 91b. Further, a roller follower 911b is pivotally attached to an end portion side of the support arm 91b to which the pin 910b is coupled and is opposed to the support arm 91a. Then, the roller followers 911a and 911b of the support arms 91a and 91b come into contact with a position adjusting member 161 of a printing pressure adjusting device 160, which will be described later, so that the positions of the support arms 91a and 91b in the swinging direction, that is, the blanket cylinders. The positions of the support shafts 94a and 94b of 9a and 9b are regulated.

  As shown in FIGS. 4A to 4C, the printing pressure adjustment device 160 mainly includes a linear motion bearing 166 provided on the moving frame 25 and a position adjustment member along the linear motion bearing 166. And an actuator 162 that moves 161. The linear motion bearing 166 includes a rail 167 fixed in a direction intersecting (substantially orthogonal) to the rotation direction of the support arms 91a and 91b, and a table 168 supported by the rail 167 and moving on the rail 167. The position adjusting member 161 is fixed to the table 168.

  The actuator 162 is configured to rotationally drive a moving screw 163 provided in parallel with the rail 167, and both the actuator 162 and the moving screw 163 are supported on the moving frame 25 by a support shaft 164. Further, the moving screw 163 is screwed into a screwing hole (female screw) 165 provided in the position adjusting member 161. As a result, the actuator 162 is driven to rotate the moving screw 163 so that the position adjusting member 161 can move forward and backward along the rail 167 at a low speed.

  By the way, as shown in FIG.4 (b), the position adjustment member 161 which concerns on this embodiment has the characteristics in the shape. Specifically, the position adjustment member 161 smoothly continues between the arm contact surfaces 161A and 161C with which the roller followers 911a and 911b of the support arms 91a and 91b contact, and the arm contact surfaces 161A and 161C. And a connection surface 161B to be connected. A plurality of arm contact surfaces 161A and 161C are provided corresponding to a plurality of printing cylinders having different diameters. In the present embodiment, the position adjusting member 161 is formed so as to correspond to two blanket cylinders 9a having different diameters and two blanket cylinders 9b having different diameters. That is, the position adjustment member 161 has two arm contact surfaces 161A and 161C on the upper surface side (the surface side facing the support arm 91a of the blanket cylinder 9a) corresponding to the two blanket cylinders 9a having different diameters. Two arm contact surfaces 161A and 161C are provided on the lower surface side (the surface side facing the support arm 91b of the blanket cylinder 9b) so as to correspond to the two blanket cylinders 9b having different diameters.

  The arm contact surface 161A corresponds to the blanket cylinders 9a and 9b having a small diameter, and the arm contact surface 161C corresponds to the blanket cylinders 9a and 9b having a large diameter. Note that the position adjustment member 161 and the support arms 91a and 91b indicated by the two-dot chain line in FIG. 4B indicate the positional relationship when the diameters of the blanket cylinders 9a and 9b are small, and the position adjustment member 161 indicated by the solid line. The support arms 91a and 91b show the positional relationship when the diameter of the blanket cylinders 9a and 9b is large.

  Further, the arm contact surfaces 161A and 161C are formed so as to be gently inclined with respect to the advancing / retreating movement direction of the position adjusting member 161. As a result, the restricting position of the support arms 91a and 91b in the swinging direction can be continuously variably adjusted as the position adjusting member 161 moves forward and backward. A connection surface 161B is formed between the arm contact surfaces 161A and 161C of the position adjusting member 161 so as to connect the arm contact surfaces 161A and 161C smoothly and continuously.

  In the present embodiment, two arm contact surfaces 161A, respectively, on the upper surface side and the lower surface side of the position adjusting member 161, corresponding to two blanket cylinders 9a having different diameters and two blanket cylinders 9b having different diameters. 161C and one connection surface 161B are provided. However, in the case of corresponding to n blanket cylinders 9a having different diameters and n blanket cylinders 9b having different diameters, the position adjusting member 161 has an upper surface side and a lower surface side, respectively. It is only necessary to provide n arm contact surfaces and (n-1) connection surfaces.

  Further, as shown in FIG. 2, a roller follower 811a is pivotally attached to the end of the support arm 81a on the side where the pin 810a is coupled, and at the end of the support arm 81b on the side where the pin 810b is coupled. A roller follower 811b is pivotally attached. Then, the roller followers 811a and 811b of the support arms 81a and 81b come into contact with position adjusting members 181a and 181b of printing pressure adjusting devices 180a and 180b described later, whereby the positions of the support arms 81a and 81b in the swinging direction. That is, the positions of the support shafts 84a and 84b of the plate cylinders 8a and 8b are restricted.

  The printing pressure adjusting device 180a will be described in detail with reference to FIGS. 5A and 5B. The printing pressure adjusting device 180a mainly includes a linear motion bearing 186a provided on the moving frame 25, and The actuator 182a moves the position adjusting member 181a along the linear motion bearing 186a. The linear motion bearing 186a includes a rail 187a fixed in a direction substantially parallel to the rotation direction of the support arm 81a, and a table 188a supported on the rail 187a and moving on the rail 187a. The position adjusting member 181a is fixed to the table 188a.

  The actuator 182a is configured to rotationally drive a moving screw 183a provided in parallel with the rail 187a. Both the actuator 182a and the moving screw 183a are supported on the moving frame 25 by a support shaft 184a. Further, the moving screw 183a is screwed into a screwing hole (female screw) 185a provided in the position adjusting member 181a. As a result, by driving the actuator 182a and rotating the moving screw 183a, the position adjusting member 181a can be moved forward and backward along the rail 187a at a low speed.

  The position adjusting member 181a has a contact portion 189a that contacts the roller 811a of the support arm 81a. The roller 811a contacts the contact portion 189a so that the support arm 81a swings in the swinging direction. The position is regulated. Further, after positioning the support arm 81a in this manner, the position adjustment member 181a is moved forward and backward by the actuator 182a, so that the position of the support arm 81a in the swing direction can be finely adjusted.

Although the printing pressure adjusting device 180a has been described above, the printing pressure adjusting device 180b has the same configuration. 5A and 5B, the actuator 182a is illustrated as a combination of a motor and a speed reducer, but is not limited to this.
Since the rotary printing press as one embodiment of the present invention is configured as described above, for example, when the printing cylinders 8a, 8b, 9a, and 9b having different diameters are replaced (for example, as shown in FIG. 1, the printing cylinders). In the case of replacing the printing cylinder 8a, 8b, 9a, 9b with a diameter larger than that of 8'a, 8'b, 9'a, 9'b), as shown in FIG. The arms 81 and 91 are swung in a direction away from the web 11 to form sufficient gaps between the printing cylinders 8a, 8b, 9a and 9b, and then the printing cylinders 8a, 8b, 9a and 9b are replaced. At this time, the actuator 162 moves the position adjustment member 161 to the restriction position corresponding to the diameter of the printing cylinders 8a and 8b to be mounted (that is, from the position indicated by the two-dot chain line of the position adjustment member 161 in FIG. 2). The position adjustment members 181a and 181b are moved to the restriction positions corresponding to the diameters of the printing cylinders 9a and 9b to be mounted by the actuators 182a and 182b. (That is, the position adjusting members 181a and 181b in FIG. 2 are moved from the position indicated by the two-dot chain line to the position indicated by the solid line) and are kept waiting at that position.

  When the replacement of the printing cylinders 8a, 8b, 9a, 9b is completed, the support arms 81, 91 are swung in the directions of the arrows shown on the support arms 81, 91 in FIG. The printing cylinders 8a, 8b, 9a, and 9b are roughly positioned (largely adjusted) by being brought into contact with the position adjusting members 181a and 181b. Thereafter, the position adjustment member 161 is moved forward and backward by the actuator 162, and the position of the blanket cylinders 9a and 9b is finely adjusted by changing the contact position between the arm contact surface 161C and each roller follower 911a and 911b. Further, the position adjusting members 181a and 181b are moved forward and backward by the actuators 182a and 182b to finely adjust the positions of the plate cylinders 8a and 8b. Thereby, the printing pressure between the plate cylinder 8a and the blanket cylinder 9a, the printing pressure between the blanket cylinder 9a and the blanket cylinder 9b, and the printing pressure between the blanket cylinder 9b and the plate cylinder 8b are obtained. Each can be finely adjusted to a desired printing pressure.

  Further, as described above, since the printing cylinder is attached and detached and the printing pressure is adjusted by separate actuators, the printing cylinders can be attached and detached by making the actuators 83 and 93 compatible with high speed by moving the rod back and forth at high speed. In addition, the actuator 162 and the actuators 182a and 182b are driven to rotate the moving screw 163 and the moving screws 183a and 183b at a slower speed than the actuators 83 and 93, thereby finely adjusting the printing pressure. be able to.

  Since the cylinder can be attached and detached at a high speed in this way, for example, it is possible to reduce the time from when the printing cylinders start to contact each other at the start of printing to the steady operation state, and with other printing apparatuses at the end of printing. Since the cylinder unloading timing can be adjusted, it is possible to perform high-quality printing up to the last sheet and to reduce waste paper. In addition, since the printing pressure can be finely adjusted, printing can always be performed under optimum printing conditions, and high-quality printing is possible.

Further, since the conventional eccentric bearing is not necessary, the apparatus itself can be made compact. Further, since the configuration is simple compared to the eccentric bearing, the cost can be reduced and workability such as assembly, disassembly and maintenance can be improved.
Furthermore, the position adjusting member 161 according to the present embodiment can be easily installed even when there is no sufficient space between the support arms 91a and 91.

  When the cylinder is removed (cylinder escape) in order to interrupt printing, the support arms 81 and 91 are quickly swung in the direction away from the web 11 by the actuators 83 and 93, and the blanket cylinders 9a and 9b are separated. A gap is formed in In addition, when the body is put on to start printing, the support arms 81 and 91 are quickly swung in the direction approaching the web 11 by the actuators 83 and 93, and the blanket cylinder 9 a is sandwiched between the webs 11. 9b are brought into contact with each other.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.
For example, in the present embodiment, the arm contact surfaces 161A and 161C and the connection surface 161B are provided on both the upper side surface and the lower side surface of the position adjustment member 161. However, either of the upper side surface or the lower side surface of the position adjustment member 161 is used. One of these may be a flat shape (a shape in which the arm contact surfaces 161A and 161C and the connection surface 161B are not provided). For example, when the upper surface of the position adjusting member 161 is flat, only the position of the blanket cylinder 9b can be finely adjusted while the position of the blanket cylinder 9a is fixed.

  Further, instead of the printing pressure adjusting devices 180a and 180b, a device similar to the printing pressure adjusting device 160 is provided between the support arm 81a of the plate cylinder 8a and the support arm 81b of the plate cylinder 8b, and the plate cylinder 8a and the plate The position of the body 8b may be finely adjusted.

It is a schematic diagram which shows the structure inside the printing unit which concerns on one Embodiment of this invention. FIG. 2 is a detailed side view of the printing unit of FIG. 1. It is AA arrow sectional drawing of FIG. (A) is taken along line B-B sectional view of FIG. 2, (b) the B ₁ arrow view of (a), a B ₂ arrow view of (c) is (b). (A) is taken along line C-C sectional view of FIG. 2 is a C ₁ arrow view of (b) is (a). It is a schematic diagram which shows an example of a structure of a rotary printing press. It is a schematic diagram which shows an example of the general printing unit provided in a rotary printing press. (A) is a schematic diagram which shows the printing pressure adjustment apparatus using the conventional eccentric bearing, (b) is EE arrow sectional drawing of (a). It is a schematic diagram which shows the conventional printing pressure adjustment apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Paper feeder 3 Printing apparatus 7, 7a-7d Printing unit 5 Web pass apparatus 6 Folding machine 8, 8a, 8b Plate cylinder 9, 9a, 9b Blanket cylinder 10, 10a, 10b Inking apparatus 11 Web (paper)
12, 12a, 12b Dampening device 13m, 13d Side frame 25 Moving frame 81, 81a, 81b, 91, 91a, 91b Operation side support arm (arm)
82, 82a, 82b, 92, 92a, 92b Shaft 83, 83a, 83b, 93, 93a, 93b Actuator 84, 84a, 84b, 94, 94a, 94b Operation side bearing 85, 85a, 85b, 95, 95a, 95b Drive Side support arm (arm)
86, 96 Drive side bearing 100 Axis 101 Eccentric bearing 102 Lever 103 Screw hole 104 Pin 105 Motor 106 Output shaft 107 Adjustment shaft 110 Fixed roll 111 Moving roll 112 Arm 113 Press device 114 Axis 115 Support bed 116 Wedge member 117 Load detection Device 160 Printing pressure adjusting device 161 Position adjusting member 161A, 161C Arm contact surface 161B Connection surface 162 Actuator 163 Moving screw 164 Support shaft 165 Screw hole 166 Linear motion bearing 167 Rail 168 Table 180, 180a, 180b Printing pressure adjusting device 181 , 181a, 181b Position adjusting member 182, 182a, 182b Actuator 183, 183a, 183b Moving screw 184, 184a, 184b Support shaft 185, 185a, 185b Screwing Hole 186, 186a, 186b Linear motion bearing 187, 187a, 187b Rail 188, 188a, 188b Table 189, 189a, 189b Abutting portion 801, 901 Sleeve 802, 902 Shaft 810, 810a, 810b, 910, 910a, 910b Pin 811 , 811a, 811b, 911, 911a, 911b Roller followers 831, 831a, 831b, 931, 931a, 931b Support pins

Claims (8)

A rotary printing machine that can change the printing length by replacing the printing cylinder with a different one,
An arm that is pivotally supported at one end and is pivotally supported, and the support shaft of the printing cylinder is pivotally attached to an intermediate portion;
An arm contact surface that contacts the arm and regulates the position of the arm in the swing direction is configured to be movable forward and backward in a direction that intersects the swing direction of the arm. A position adjusting member disposed so as to be gently inclined with respect to the forward / backward movement direction so that the restriction position in the swing direction of the arm can be continuously variably adjusted with the forward / backward movement;
The position adjusting member is
A plurality of the arm contact surfaces corresponding to the plurality of printing cylinders having different diameters are provided on the surface facing the arm, and the plurality of arm contact surfaces are connected so as to be smoothly continuous. A rotary printing machine characterized by having a connecting surface. An actuator for driving the arm in the swinging direction is provided on the other end side of the arm,
The movement of the arm in the swinging direction is performed by the actuator, and the position of the swinging direction of the arm is finely adjusted by moving the position adjusting member forward and backward to move the support shaft of the printing cylinder to a predetermined position. The rotary printing press according to claim 1, wherein the rotary printing press is adjusted. The adjustment of the position of the swinging direction of the arm is determined by the pressing force applied to the arm contact surface by the actuator and the position of the position adjusting member in the advancing / retreating direction. Rotary printing machine. The rotary printing press according to any one of claims 1 to 3, wherein a roller follower is provided at a portion of the arm that contacts the arm contact surface. Two printing cylinders are provided on the upper and lower sides so that the printing cylinders are in contact with each other, and the arms are provided on each of the two printing cylinders,
The position adjustment member is
It is provided between the two arms, and has an arm contact surface in the vertical direction corresponding to the two arms so that the positions of the two arms can be adjusted simultaneously. The rotary printing machine according to any one of claims 1 to 4. 6. The rotary printing press according to claim 5, wherein the two printing cylinders are blanket cylinders for transferring a pattern across a web. A plate cylinder in contact with the blanket cylinder;
A plate cylinder arm which is provided so as to be swingable by being pivoted at one end, and the support shaft of the plate cylinder is pivotally attached to an intermediate portion;
It has a plate cylinder arm contact surface that contacts the plate cylinder arm and regulates the position of the plate cylinder arm in the swinging direction, and can move forward and backward in the same direction as the plate cylinder arm swinging direction. A position adjusting member for a plate cylinder,
A plate cylinder actuator for driving the plate cylinder arm in the swinging direction is provided on the other end side of the plate cylinder arm,
The movement of the plate cylinder arm in the swinging direction is performed by the plate cylinder actuator, and the position of the plate cylinder arm in the swinging direction is finely adjusted by moving the plate cylinder position adjusting member forward and backward. The rotary printing press according to claim 6, wherein the support shaft of the plate cylinder is adjusted to a predetermined position. 8. The rotary printing press according to claim 7, wherein a roller follower is provided at a portion of the plate cylinder arm that contacts the plate cylinder arm contact surface.

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