JP6671122B2 - Printer - Google Patents

Description

  The present invention relates to a printing machine for forming a functional film (conductive film) having a high-definition pattern by transferring ink to a web-like substrate.

  2. Description of the Related Art Conventionally, various printing presses have been provided in which ink is transferred to a web-like substrate to form a pattern. Such a printing machine is disclosed, for example, in Patent Document 1.

JP 2010-23393 A

  In the above-described conventional printing press, printing is performed on the base material sucked and held on the upper surface of the stage while feeding the web-shaped base material toward the upper surface of the stage by a predetermined length. At this time, the web-shaped base material is wound in a roll shape on a pay-out reel, and is fed by a rotation of the pay-out reel, and is given a predetermined magnitude of tension.

  However, as described above, when applying tension to the base material while feeding out the base material wound in a roll shape, the base material may be deformed. Wavy deformation such as wrinkles and burrs is likely to occur. Such deformation is remarkable as the thickness of the base material becomes thinner, and is caused not only by the web-shaped base material but also by the inappropriate cutting or storage state of the sheet-shaped base material. Sometimes. When the left and right ends are deformed during the transfer of the base material, it is difficult to appropriately suction-hold the base material on the upper surface of the stage, which may cause a printing failure.

  Therefore, the present invention is to solve the above problems, the deformation occurred at the end of the substrate during transport, by extending and leveling, to reliably perform suction holding of the substrate during printing. It is another object of the present invention to provide a printing machine capable of suppressing the occurrence of printing defects.

A printing press according to a first invention that solves the above-mentioned problems,
A stage for sucking and holding the supplied base material on the upper surface,
A pattern forming unit that transfers ink to form a pattern on the base material that is sucked and held on the upper surface,
A moving member that moves along the direction in which the end portion of the base material that is sucked and held on the upper surface extends; By contact, a leveling roll to level the edge of the substrate ,
A substrate position detecting unit that is disposed on the leveling direction upstream side of the leveling roll and detects the position of the substrate sucked and held on the upper surface,
Stage position adjusting means for adjusting the position of the stage based on the position of the base material detected by the base material position detecting means so that the register of the base material sucked and held on the upper surface matches the pattern forming means. With
The substrate position detecting means is configured to perform a detecting operation at the same time as the leveling operation of the leveling roll is performed,
When the deformation generated in the base material is not eliminated by one leveling operation by the leveling roll, the leveling operation is performed until the deformation is eliminated .

A printing press according to a second invention for solving the above-mentioned problems,
The substrate is in the form of a web and is transported along its longitudinal direction,
The smoothing roll is in rolling contact with only the left and right end portions of the base material sucked and held on the upper surface in the base material transport direction.

  Therefore, according to the printing press of the present invention, the leveling roll is brought into rolling contact with only the end of the base material sucked and held on the upper surface of the stage, and the deformation generated at the end is stretched and leveled. Thereafter, the pattern can be formed by transferring the ink to the substrate in which the deformation has been eliminated. Thus, the suction holding of the base material during printing can be reliably performed, so that the occurrence of printing failure can be suppressed.

FIG. 1 is a schematic configuration diagram of a printing press according to an embodiment of the present invention. FIG. 2 is a sectional view taken along the line II-II in FIG. 1. FIG. 3 is a sectional view taken along line III-III in FIG. 2.

  Hereinafter, a printing press according to the present invention will be described in detail with reference to the drawings.

  First, the printing machine 1 shown in FIG. 1 forms a functional film (conductive film) having a high-definition pattern by transferring ink onto a web-shaped substrate W using an intaglio printing method. It is a printing machine that can do it. The substrate W as a printing material is, for example, a relatively thin stainless steel plate.

  Therefore, as shown in FIG. 1, the delivery reel 11 and the take-up reel 12 are rotatably supported by the printing press 1, and the base material W is transported from the take-out reel 11 to the take-up reel 12. On the way, printing is performed. That is, the feeding reel 11 can feed the base material W wound in a roll shape toward the take-up reel 12. On the other hand, the take-up reel 12 can take up the base material W fed from the pay-out reel 11 in a roll shape.

  A plurality of guide rolls 13, suction rolls 14, and buffer rolls 15 are provided in the middle of the substrate transport path between the supply reel 11 and the take-up reel 12, from the upstream side to the downstream side in the substrate transport direction. And are rotatably supported.

  Among them, the suction roll 14 has a hollow shape, and a suction pump 16 is connected to the hollow portion. A plurality of suction holes are opened in the outer peripheral surface of the suction roll 14, and these suction holes communicate with the hollow portion. Further, the buffer roll 15 guides the base material W while supporting the base material W such that the base material W is loosened between the base material W and the suction roll 14.

  That is, the base material W fed from the feed reel 11 is guided by the guide roll 13, the suction roll 14, and the buffer roll 15, and then is taken up by the take-up roll 12. At this time, by driving the suction pump 16, air can be sucked from the suction holes of the suction roll 14, so that the back surface of the substrate W being conveyed (the surface opposite to the surface to be printed) is moved. , Can be brought into close contact with the outer peripheral surface of the suction roll 14.

  Accordingly, when the suction roll 14 is rotationally driven while sucking the substrate W, a tension acts on the substrate W toward the downstream side in the transport direction. Therefore, the substrate W to which the tension is applied in this manner is transported between the payout reel 11 and the suction roll 14 without slack.

  Further, among the plurality of guide rolls 13, a support 21 is provided between the guide roll 13 located on the most downstream side in the substrate transport direction and the suction roll 14. A pair of left and right guide rails 22 are provided on the upper surface of the support base 21 in the substrate transport direction. A register adjusting device (stage position adjusting means) 23 is provided at a central portion between the pair of guide rails 22, and a stage 24 is provided on an upper surface of the register adjusting device 23. At this time, the register adjusting device 23 and the stage 24 are arranged below the substrate transport path (the path line of the substrate W).

  The stage 24 has a hollow shape, and a suction pump 25 is connected to the hollow portion. A plurality of suction holes are opened in the upper surface 24a of the stage 24, and these suction holes communicate with the hollow portion. On the other hand, the register adjusting device 23 moves the substrate 24 in the base material transport direction (base material longitudinal direction), the base material width direction position (left-right direction) orthogonal to the base material transfer direction, and the base material with respect to the base material transfer direction. The inclination angle in the width direction (the rotation angle about the vertical axis) can be adjusted.

  That is, by driving the suction pump 25, air can be sucked from the suction holes of the upper surface 24a, so that the back surface of the base material W supplied above the stage 24 can be suction-held on the upper surface 24a. it can. When the back surface of the base material W is suction-held on the upper surface 24a of the stage 24, the printing portion (printing range) on the surface to be the printing surface is arranged on the upper surface 24a of the stage 24. become.

  Further, by driving the register adjusting device 23, the above three positions on the stage 24 can be adjusted based on the detection result of the base material position detecting sensor 60 described later. Thereby, the registration of the base material W sucked and held on the upper surface 24a can be appropriately adjusted with respect to the later-described plate cylinder 32 and blanket cylinder 33.

  On the upstream side of the pair of left and right guide rails 22 in the substrate transport direction, a body supporting moving frame 31 is supported so as to be able to reciprocate along the guide rails 22. A blanket cylinder 33 is rotatably supported at the upper portion between the pair of body supporting moving frames 31 erected so as to be rotatable and vertically movable along the body supporting slide frame 31. Further, a plate cylinder 32 is rotatably supported above the cylinder supporting moving frame 31.

  That is, the blanket cylinder 33 is positioned between a standby position where the outer peripheral surface can contact the outer peripheral surface of the plate cylinder 32 and a printing position where the outer peripheral surface can roll with respect to the upper surface 24a of the stage 24. It can be moved up and down. At this time, ink can be supplied to the outer peripheral surface of the plate cylinder 32 by an ink supply device (not shown).

  The body support moving frame 31 is reciprocally movable by a moving mechanism such as a linear motor, a rack and pinion, a ball screw, and a rodless cylinder. Further, the cylinder supporting moving frame 31, the plate cylinder 32, and the blanket cylinder 33 constitute a pattern forming unit.

  That is, by rotating the plate cylinder 32 and the blanket cylinder 33 and moving the blanket cylinder 33 to the standby position, the ink corresponding to the plate wound on the outer peripheral surface of the plate cylinder 32 is applied to the outer peripheral surface of the blanket cylinder 33. Can be transcribed.

  On the other hand, while the blanket cylinder 33 is positioned at the printing position, the cylinder supporting moving frame 31 is moved toward the downstream side in the substrate transport direction, so that the ink supplied to the outer peripheral surface of the blanket cylinder 33 is moved to the upper surface 24a. Can be transferred to the printing portion on the surface of the base material W suction-held. When the transfer of the ink by the blanket cylinder 33 is completed, the blanket 33 is retracted upward from the upper surface 24a of the stage 24, and then the cylinder supporting moving frame 31 is moved toward the upstream side in the substrate transport direction. .

  On the other hand, as shown in FIGS. 1 to 3, a roll supporting moving frame (moving member) 41 is provided along the guide rail 22 on the downstream side of the pair of left and right guide rails 22 in the substrate transport direction. It is supported so that it can reciprocate. The upper ends of the pair of roll supporting moving frames 41 erected in a pair are connected by a connecting plate 42. The roll supporting moving frame 41 can be reciprocated by a moving mechanism such as a linear motor, a rack and pinion, a ball screw, and a rodless cylinder.

  An upper end of a fixed plate 43 is fixed to each inner surface of the pair of left and right roll supporting moving frames 41 via two fixing pins 44, and a rotating shaft is provided between the lower ends of these fixed plates 43. 45 is rotatably supported. Although the rotation shaft 45 has a rectangular rod whose cross section orthogonal to the rotation axis direction is a rectangle as a whole, a circular cross section at both ends in the axial direction rotatably supported by the fixed plate 43 is circular. Has become a stick.

  Further, the upper ends of a pair of left and right roll support members 46 are supported on the rotating shaft 45 so as to be position-adjustable in the direction of the rotating shaft. The roll support member 46 has an L-shape when viewed from the side in the width direction of the base material. A penetrating shaft 48 is supported at the lower end of the roll supporting member 46 in the base material width direction, and the axial position of the penetrating shaft 48 is fixed by a nut 49.

  On the other hand, a roll support shaft 50 is mounted on the inner surface at the lower end of the roll support member 46 so as to be eccentric with respect to the through shaft 48. At this time, since the through shaft 48 penetrates the lower end of the roll support member 46 in the base material width direction and is connected to the roll support shaft 50, the roll support shaft 50 has the through shaft 48 as a center of rotation. It is rotatable. The leveling roll 51 is rotatably supported by the roll support shaft 50.

  The leveling roll 51 rolls and contacts only the left and right end portions Wa of the substrate W sucked and held on the upper surface 24a of the stage 24, and presses the rolls, thereby deforming the left and right end portions Wa. Is stretched and leveled. The outer peripheral portion of the leveling roll 51 is made of an elastic polymer material such as silicone rubber, ester rubber, butyl rubber, or the like.

  That is, by loosening the nut 49 and releasing the fixing of the through shaft 48 to the roll supporting member 46, the roll supporting shaft 50 can be eccentrically rotated with respect to the through shaft 48. Thereby, the position in the height direction of the leveling roll 51 can be changed. On the other hand, by tightening the nut 49 and fixing the through shaft 48 to the roll support member 46, eccentric rotation of the roll support shaft 50 about the through shaft 48 as a rotation center can be restricted. Thereby, the leveling roll 51 can be positioned in the height direction.

  As described above, by changing the position of the leveling roll 51 in the height direction, it is possible to adjust the pressing force on the left and right ends Wa of the leveling roll 51. At this time, the pressing force is set according to, for example, the material, the thickness, and the rigidity of the base material W. Then, when the leveling rolls 51 are in rolling contact with the left and right ends Wa of the base material W, they press them so as to straddle the left and right ends Wa in the base material width direction.

  A handle member 47 is rotatably attached to the roll support member 46. The screw shaft portion of the handle member 47 is screwed with the screw hole of the roll support member 46, penetrates the screw hole, and the tip surface thereof is in contact with the outer surface of the rotating shaft 45.

  That is, by rotating the handle member 47 to loosen the screw shaft portion, the roll support member 46 can be moved in the rotation axis direction. On the other hand, by rotating the handle member 47 and tightening the screw shaft portion, the roll support member 46 can be positioned in the rotation axis direction. Thereby, the position in the base material width direction (position in the rotation axis direction) of the leveling roll 51 is adjusted according to the width dimension of the base material W, that is, the position in the base material W in the right and left ends Wa in the base material width direction. be able to.

  Further, a cylinder support shaft 52 is fixed to the inner surface of the left (one side) fixed plate 43 of the pair of left and right fixed plates 43, and the base end of the air cylinder 53 is fixed to the cylinder support shaft 52. It is supported so as to be able to swing up and down. The air cylinder 53 has a drive rod 53a that can be extended and contracted, and the pair of left and right leveling rolls 51 can be simultaneously attached to and detached from the upper surface 24a of the stage 24 by extending and contracting the drive rod 53. It has become. At this time, the rod end of the driving rod 53a is connected to one end of the lever member 54, and the other end of the lever member 54 is connected to the rotating shaft 45.

  That is, as shown by a solid line in FIG. 3, by driving the air cylinder 53 and extending the driving rod 53a, one end of the lever member 54 can be turned downward. Accordingly, since the rotating shaft 45 rotates in one rotation direction, the leveling roll 51 can be lowered to a leveling position where the outer peripheral surface can roll on the upper surface 24 a of the stage 24.

  On the other hand, as shown by a broken line in FIG. 3, by driving the air cylinder 53 and shortening the drive rod 53a, one end of the lever member 54 can be turned upward. Accordingly, since the rotating shaft 45 rotates in the other rotation direction, the leveling roll 51 can be raised to the retracted position where the outer peripheral surface is retracted upward from the upper surface 24a of the stage 24.

  With the above-described configuration, the moving direction of the roll supporting moving frame 41 and the rolling direction of the leveling roll 51 are adjusted to the left and right ends Wa of the base material W suction-held on the upper surface 24a of the stage 24. In the direction of extension.

  By moving the roll supporting moving frame 41 toward the upstream side in the substrate transport direction while the leveling roll 51 is positioned at the leveling position, the leveling roll 51 is suction-held on the upper surface 24a. Of the base material W, only the left and right ends Wa can be brought into rolling contact. Therefore, since the pressing force of the leveling roll 51 can be applied only to the left and right end portions Wa, the deformation generated at the left and right end portions Wa can be efficiently extended and leveled.

  When the leveling by the leveling rolls 51 is completed, the leveling rolls 51 are retracted to the retreat position, and the roll supporting moving frame 41 is moved downstream in the substrate transport direction.

  Furthermore, the leveling direction of the leveling roll 51 (the rolling direction at the time of the leveling operation of the leveling roll 51) is a direction from the downstream side to the upstream side in the substrate transport direction, and is opposite to the substrate transport direction. In addition to the direction, the printing direction of the blanket cylinder 33 (the rolling direction during the printing operation of the blanket cylinder 33) is also opposite.

  A pair of left and right base material positions is located on the downstream side of the leveling roll 51 in the roll supporting moving frame 41 in the substrate transport direction, in other words, on the upstream side of the leveling roll 51 in the roll supporting moving frame 41. A detection sensor (substrate position detecting means) 60 is supported. The base material position detection sensor 60 captures an image of the base material W sucked and held on the upper surface 24a of the stage 24, and detects the position of the base material W with respect to the upper surface 24a.

  Therefore, the substrate position detection sensor 60 can follow the leveling roll 51 as the roll supporting moving frame 41 moves toward the upstream side in the substrate transport direction. At the same time as the leveling operation is started, the detection by the substrate position detection sensor 60 can be started.

  Next, the operation of the printing press 1 will be described in detail with reference to FIGS.

  First, the handle member 47 is rotated to set the position in the substrate width direction of the leveling roll 51 in accordance with the position of the left and right ends Wa of the substrate W in the substrate width direction. Further, the roll supporting shaft 50 is eccentrically rotated with respect to the through shaft 48, and the pressing force of the leveling roll 51 against the base material W is set according to the material, the thickness, the rigidity, and the like of the base material W. .

  Next, while feeding the base material W by a predetermined length from the feeding reel 11, the fed base material is guided by the guide roll 13, the suction roll 14, and the buffer roll 15, and is wound on the take-up reel 12. At the same time, the suction pump 16 is driven to apply the tension generated by the suction and rotation of the suction roll 14 to the substrate W.

  Then, when the portion to be printed on the surface of the substrate W is transported to a predetermined position on the upper surface 24a of the stage 24, the suction pump 25 is driven to suck and hold the substrate W on the upper surface 24a of the stage 24.

  At this time, if tension is applied to the base material W while feeding the base material W wound in a roll shape, a wavy deformation, such as wrinkles or burrs, may occur particularly at the left and right ends Wa. . If such deformation occurs, there is a possibility that the deformed portion does not adhere to the upper surface 24a of the stage 24 even if the substrate W is suction-held.

  Then, the drive rod 53a of the air cylinder 53 is extended, and the leveling roll 51 is moved to the leveling position. Subsequently, the moving frame 41 for supporting the roll, which has been waiting on the downstream side in the substrate transport direction on the stage 24, is moved to the upstream side in the substrate transport direction until the leveling roll 51 passes the stage 24 on the upstream side in the substrate transport direction. Move toward.

  Thereby, the leveling roll 51 rolls on the left and right end portions Wa of the base material W while pressing the left and right end portions Wa of the base material from above, thereby deforming the left and right end portions Wa. become. As a result, the left and right ends Wa of the base material W are sucked and held on the upper surface 24a of the stage 24 such that the back surfaces thereof are in close contact with the upper surface 24a of the stage 24 without any gap.

  At the same time, the base material position detection sensor 60 detects a position of the base material W with respect to the upper surface 24a as the roll supporting moving frame 41 moves.

  Next, the drive rod 53 of the air cylinder 53 is shortened, and the leveling roll 51 is moved to the retracted position. Subsequently, the roll supporting moving frame 41 is moved toward the downstream side in the substrate transport direction, and the leveling roll 51 is returned to the original position.

  In addition, if the deformation generated in the left and right ends Wa of the base material W is not eliminated by one leveling operation by the leveling roll 51, the above-described leveling operation is performed until the deformation is eliminated. . In such a case, the roll supporting moving frame 41 may be moved toward the downstream side in the substrate transport direction while the leveling roll 51 is positioned at the leveling position.

  Then, based on the position of the substrate W detected by the substrate position detection sensor 60, the register adjusting device 23 is driven to register the substrate W sucked and held on the upper surface 24a of the stage 24 with the plate cylinder 32. And blanket cylinder 33.

  Next, after rotating the plate cylinder 32 and the blanket cylinder 33, the blanket cylinder 33 is raised to the standby position. As a result, the blanket cylinder 33 comes into contact with the plate cylinder 32, and the ink is transferred from the plate cylinder 32 to the blanket cylinder 33.

  Then, after lowering the blanket cylinder 33 to the printing position, the cylinder supporting moving frame 31 is moved toward the downstream side in the substrate transport direction. As a result, the ink is transferred from the blanket cylinder 33 to the printing portion on the surface of the base material W, and a functional film having a high-definition pattern is formed on the printing portion.

  Next, after raising the blanket cylinder 33 and retreating from the upper surface 24a of the stage 24, the cylinder supporting moving frame 31 is moved toward the upstream side in the substrate transport direction. Subsequently, the blanket cylinder 33 is moved to the standby position.

  Then, the drive of the suction pump 25 is stopped, and the substrate W is released from the suction holding by the upper surface 24a of the stage 24.

  Further, by repeatedly performing the above-described operation, a functional film having a high-definition pattern is formed on the surface of the base material W at predetermined intervals.

  Therefore, according to the printing press 1 of the present invention, the leveling roll 51 is brought into rolling contact with only the left and right end portions Wa of the web-shaped base material W sucked and held on the upper surface 24a of the stage 24, and After extending and leveling the deformation generated at both ends Wa, ink can be transferred to the base material W from which the deformation has been eliminated to form a pattern. This makes it possible to reliably hold the substrate W by suction during printing, thereby suppressing the occurrence of printing defects.

  Further, by providing the substrate position detection sensor 60 on the upstream side in the leveling direction of the leveling roll 51, the leveling operation of the leveling roll 51 and the detection operation of the substrate position detection sensor 60 can be performed at the same time. Can be. Thereby, at the same time when the leveling operation of the leveling roll 51 is completed, the registration of the base material W sucked and held on the upper surface 24a of the stage 24 can be performed. Therefore, the non-printing time can be reduced, and the productivity can be improved.

  In the above-described embodiment, the deformation generated at the left and right end portions Wa of the base material W is leveled simultaneously by using a pair of left and right leveling rolls 51. The deformation generated in Wa may be equalized one by one using one equalizing roller. Here, it is conceivable that the deformation generated at the left and right end portions Wa of the base material W is made uniform at the same time by using one long leveling roll. A large pressing force is applied even to the center in the width direction where no crack occurs, and the surface of the center in the width direction may be damaged. Therefore, when equalizing the deformations generated at the right and left ends Wa of the base material W, it is considered preferable to use the pair of right and left equalizing rolls 51 to simultaneously equalize the deformation.

Reference Signs List 1 printing press 23 register adjusting device 24 stage 24a upper surface 25 suction pump 31 barrel supporting moving frame 32 plate cylinder 33 blanket 41 roll supporting moving frame 45 rotation shaft 46 roll supporting member 47 handle member 48 penetrating shaft 49 nut 50 roll supporting shaft 51 Leveling Roll 53 Air Cylinder 54 Lever Member 60 Substrate Position Detection Sensor W Substrate Wa End

Claims (2)

A stage for sucking and holding the supplied base material on the upper surface,
A pattern forming unit that transfers ink to form a pattern on the base material that is sucked and held on the upper surface,
A moving member that moves along the direction in which the end portion of the base material sucked and held on the upper surface extends;
A leveling roll that is rotatably supported by the moving member and is in rolling contact with only the end of the base material that is sucked and held on the upper surface, to level the end of the base material ,
A substrate position detecting unit that is disposed on the leveling direction upstream side of the leveling roll and detects the position of the substrate sucked and held on the upper surface,
Stage position adjusting means for adjusting the position of the stage based on the position of the base material detected by the base material position detecting means so that the register of the base material sucked and held on the upper surface matches the pattern forming means. With
The substrate position detecting means is configured to perform a detecting operation at the same time as the leveling operation of the leveling roll is performed,
If the deformation generated in the base material cannot be eliminated by one leveling operation by the leveling roll, the leveling operation is performed until the deformation is eliminated . The printing press according to claim 1 ,
The substrate is in the form of a web and is transported along its longitudinal direction,
The printing press, wherein the leveling roll is in rolling contact with only the left and right ends in the substrate transport direction of the substrate sucked and held on the upper surface.

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