JP6159159B2 - Printing coating equipment - Google Patents

Description

  The present invention relates to a printing coating apparatus that transfers a transfer liquid such as a coating liquid or ink onto a continuously conveyed web.

  Conventionally, for example, a printing apparatus disclosed in Patent Document 1 is engaged with a plate cylinder (gravure roll) and both axial ends of the plate cylinder so as to be rotatably supported on the apparatus fixing side. And a pair of support shafts, and the ink is transferred and printed on a web that is continuously conveyed by a rotating operation of a plate cylinder in which the ink is adhered to the outer peripheral surface.

  Each of the support shafts can be moved back and forth in the axial direction of the plate cylinder, and when changing a picture to be printed, both ends in the axial direction of the plate cylinder after printing are moved by retracting the both support shafts. The plate cylinder is removed from the machine fixing side, and then the plate cylinder before printing is placed between the two support shafts, and the both support shafts are advanced to engage both ends of the plate cylinder in the axial direction. By combining them, each support shaft supports the plate cylinder before printing.

JP 2002-103560 A (paragraphs 0015 to 0018, FIG. 1)

  However, in Patent Document 1, since each support shaft is advanced and engaged with both ends in the axial direction of the plate cylinder, each support shaft is intimately engaged with both ends in the axial direction of the plate cylinder, Even if the support shaft is retracted, there is a risk that the support portions will not come off from both ends of the plate cylinder in the axial direction.

  In addition, a lot of ink splashes and adheres to the periphery of the plate cylinder during printing, but if the splashed ink adheres to the movable part of each support shaft, the adhering ink affects the advance / retreat operation of each support shaft. May occur, and the plate cylinder may not be exchanged smoothly.

  Furthermore, in the coating apparatus that transfers the coating liquid onto the web that is continuously conveyed by the rotation operation of the coating roll (gravure roll) with the coating liquid adhered to the outer peripheral surface, the above-described printing apparatus and A similar problem arises.

  The present invention has been made in view of such points, and the object of the present invention is to easily replace the gravure roll and to prevent the transfer liquid from adhering to the support shaft when the apparatus is used. It is in providing the printing coating apparatus which can be performed.

  In order to achieve the above object, the present invention is characterized in that a cover surrounding each support shaft is provided and the structure of the cover is devised.

  Specifically, gravure rolls mounted on a lifting table and raised to a roll mounting position are rotatably supported by a pair of support shafts on the fixed side of the apparatus, which are spaced apart from each other in the horizontal direction. The following solutions were taken for the print coating device installed.

That is, in the first invention, a cylindrical cover positioned on each device fixing side is fitted on each support shaft with a gap from the support shaft, and the cylindrical cover is a shaft of the gravure roll. A first cylindrical portion made of a rigid body movable in the center direction, one end fixed to the first cylindrical portion, and the other end fixed to the apparatus fixing side, and the gravure roll shaft as the first cylindrical portion moves. And a flexible second tube portion capable of adjusting the length in the center direction, and both the support shafts are provided on the device fixing side so as to be movable forward and backward with respect to the gravure roll, and are raised to the roll mounting position. The end of the gravure roll is engaged and supported by the advancing operation and the gravure roll is received from the lifting table, while the gravure roll is separated from the end of the gravure roll by the retreating operation, and the gravure roll waits at the roll mounting position. Rising When passing to the table and performing the retreating operation, when one shaft end is detached from the end of the gravure roll and the other shaft end is engaged with the end of the gravure roll, the gravure roll The end is brought into contact with the cylindrical cover and stopped, and the other shaft end is detached from the end of the gravure roll.

In the second invention, in the first invention, a moving means for moving the upper Symbol first cylindrical portion in the axial direction of the gravure roll was set to correspond to the length of the axial direction of the gravure roll A storage unit that stores the position of the first tube unit, and a calculation unit that calculates a movement amount for moving the first tube unit to the position of the first tube unit stored in the storage unit; And a control unit that controls the moving unit to move the first tube unit based on the movement amount calculated by the calculation unit.

According to a third invention, in the second invention, the moving means has a rod shape extending in the axial direction of the gravure roll, and an operation in which male screw portions opposite to each other are formed on the outer peripheral surface of each end portion side. A screw formed on the inner peripheral surface of a rod, a drive motor connected to one end of the operating rod and rotating the operating rod, and a female screw portion screwed into the male screw portion so as to be able to advance and retreat And a pair of support frames each having a hole and supporting each of the first cylindrical portions.

According to a fourth invention, in the first invention, a main body frame having a through hole penetrating in the axial direction of the gravure roll, and a slide slidably inserted into the through hole and connected to the first cylindrical portion The slide shaft is formed with a plurality of fitting recesses at predetermined intervals in the axial direction of the gravure roll, and the main body frame intersects the axial direction of the gravure roll. Positioning means having a pin that expands and contracts in the direction is provided, and is configured to determine the position of the gravure roll in the axial direction in the first cylindrical portion by extending the pin and fitting it in each fitting recess. It is characterized by being.

  In the first invention, when each support shaft is retracted and the gravure roll is removed from the apparatus fixing side, one of the support shafts is disengaged from the gravure roll and the other support shaft is bitten into the gravure roll and is not easily removed. Since the roll is pulled by the other support shaft and the end of the gravure roll in the axial direction comes into contact with the tip of the cylindrical cover, the gravure roll does not move thereafter, and only the support shaft moves backward. Can be removed from the device fixing side.

Also , when changing to a gravure roll with a different length in the axial direction, the length of the cylindrical cover can be changed even if the length of each support shaft changes, so depending on the length of each support shaft The cylindrical cover can surround substantially the entire area of each support shaft. Therefore, the transfer liquid scattered from the gravure roll can be prevented from adhering to the support shaft. Moreover, since the 1st cylinder part is a rigid body, if the axial center direction edge part of a gravure roll contact | abuts to a 1st cylinder part, reaction force will reliably apply to the axial direction edge part of a gravure roll by this 1st cylinder part. Accordingly, the first tube portion reliably stops the movement of the gravure roll, and only the support shaft moves backward, so that the gravure roll can be easily removed from the apparatus fixing side.

In the second invention, since the position of the first cylindrical portion automatically changes corresponding to the gravure roll to be replaced, the operation of changing the length of the cylindrical cover is simplified, and the burden on the operator can be reduced.

In the third aspect of the invention, when one drive motor is driven to rotate, the positions of both the first cylindrical portions are changed simultaneously, so there is no need to prepare a drive motor for each cylindrical cover, and a simple device can be made at low cost. .

In the fourth invention, when the first cylinder part is moved and the pin of the positioning means is fitted in each fitting recess, the position is determined by moving the first cylinder part by a predetermined amount. The length adjustment operation of the cylindrical cover at the time of exchanging the gravure roll can be performed easily and accurately.

It is a front view of the printing apparatus which concerns on Embodiment 1 of this invention. It is sectional drawing in the AA of FIG. It is the B section enlarged view of FIG. FIG. 4 is a view corresponding to FIG. 3 with a cylindrical cover extended. FIG. 4 is a cross-sectional view taken along line CC in FIG. 3, (a) shows a state immediately before removing the plate cylinder, (b) shows a state in the middle of removing the plate cylinder, and (c) shows a state where the plate cylinder is removed. The state immediately after is shown. FIG. 3 is a view corresponding to FIG. 2 according to Embodiment 2 of the present invention. It is sectional drawing in the DD line | wire of FIG. It is the E section enlarged view of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of the preferred embodiment is merely exemplary in nature.
Embodiment 1 of the Invention
1 and 2 show a printing apparatus 1 according to Embodiment 1 of the present invention. The printing apparatus 1 prints by transferring ink onto a web W such as a plastic film that is continuously conveyed, and includes a side frame (apparatus fixing side) 3 that is spaced apart in the horizontal direction, A plate cylinder (gravure roll) 2 that is provided between the side frames 3 and whose axis is oriented in the horizontal direction is provided, and both end portions in the axis direction of the plate cylinder 2 are recessed in a substantially tapered shape on the inner side in the axis direction. A recessed portion 2a is formed. An elevating table 10 is mounted below the plate cylinder 2 to mount and lift the plate cylinder 2.

  The both side frames 3 are formed such that first and second through holes 3a and 3b penetrating in the axial direction of the plate cylinder 2 are arranged side by side, and below the second through holes 3b in one side frame 3. A third through hole 3c is formed through the plate cylinder 2 in the axial direction.

  A support shaft 31 having a substantially tapered shape corresponding to the recessed portion 2a is disposed opposite to the upper side of each side frame 3 (roll attachment position P).

  The one support shaft 31 can be moved back and forth with respect to one end side in the axial direction of the plate cylinder 2 by a cylinder 32 that expands and contracts in a substantially horizontal direction, and the other support shaft 31 extends and contracts in a substantially horizontal direction. The ball screw mechanism 33 driven by a servo motor can be moved back and forth with respect to the other axial end of the plate cylinder 2.

  Then, the both support shafts 31 are engaged with both recessed portions 2a of the plate cylinder 2 raised to the roll mounting position P by the lifting table 10 by an advancing operation to support the plate cylinder 2 from the lifting table 10. On the other hand, the plate cylinder 2 is separated from the two recessed portions 2a of the plate cylinder 2 by a retreating operation, and the plate cylinder 2 is transferred to the lifting table 10 waiting at the roll mounting position P. The plate cylinder 2 is rotatably supported in a state of being engaged with the two concave portions 2a (see FIG. 5).

  Further, as shown in FIGS. 3 and 4, a servo motor-controlled rotation drive unit 34 that rotates the support shaft 31 is provided on the base end side of the one support shaft 31, and the rotation drive unit 34. However, the plate cylinder 2 is rotated by rotating the support shaft 31.

  On one side in the horizontal direction intersecting with the axial direction of the plate cylinder 2, as shown in FIG. 2, excess ink adhering to the outer peripheral surface by being pressed against the outer peripheral surface of the plate cylinder 2 is rotated by the plate cylinder 2. A doctor blade 4 that is scraped off by operation is disposed.

  Further, above the plate cylinder 2, a pressure cylinder 5 for pressing the web W onto the plate cylinder 2 from above is provided, and the pressure cylinder 5 can be slid up and down by a slide mechanism (not shown). .

  Then, with the plate cylinder 2 supported by the support shafts 31, the impression cylinder 5 is slid downward, the web W is sandwiched between the plate cylinder 2 and the impression cylinder 5, and the plate cylinder 2 and Ink adhering to the outer peripheral surface of the plate cylinder 2 is transferred to the web W while the web W is moved by the rotation of the impression cylinder 5.

  As shown in FIGS. 1 and 2, each of the support shafts 31 is fitted with a cylindrical cover 6 positioned on each of the side frames 3 with a clearance from the support shaft 31. 6 prevents ink scattered from the plate cylinder 2 from adhering to the support shaft 31.

The cylindrical cover 6 includes a metal first cylindrical portion 6a made of a rigid body that can move in the axial direction of the plate cylinder 2, an opening peripheral edge on one end side on the first cylindrical portion 6a, and an opening peripheral edge on the other end side. The second cylinder portion 6b is fixed to the side surface of each side frame 3 and has a flexible resin second cylinder portion 6b whose length can be adjusted in the axial direction of the plate cylinder 2. The second cylinder portion 6b is shown in FIGS. 4, the length changes in the axial direction of the plate cylinder 2 with the movement of the first cylindrical portion 6a.

  In addition, the thickness of the 2nd cylinder part 6b of FIG. 2 is exaggerated for convenience.

  Below the doctor blade 4, as shown in FIG. 2, a substantially L-shaped support frame 61 is provided in a side view for supporting the first cylindrical portion 6a.

  The support frame 61 includes a first extension frame 61a that extends horizontally from the first cylindrical portion 6a toward the doctor blade 4, and a second extension that extends downward from the extension end of the first extension frame 61a. A frame 61b and a third extending frame 61c extending in the axial direction of the plate cylinder 2 from the extending end of the second extending frame 61b toward the side opposite the frame 3 are provided.

  A substantially rectangular slider 61d in a front view is fixed to the lower surface of the third extending frame 61c, and a fourth extending frame 61e extending downward is provided on the side frame 3 side of the slider 61d.

  A first guide shaft 62 extending in the axial direction of the plate cylinder 2 toward the side frame 3 is provided at a position corresponding to the first through hole 3a of the first extension frame 61a. The guide shaft 62 is slidably inserted into the first through hole 3a.

  Further, a slide hole 64 extending in the axial direction of the plate cylinder 2 is formed through the overlapping portion of the slider 61d and the fourth extending frame 61e.

  A second guide shaft 63 extending in the axial direction of the plate cylinder 2 is provided below the plate cylinder 2, and the second guide shaft 63 is inserted into the slide hole 64 while the second guide shaft 63 is inserted through the slide hole 64. Both ends of 63 are fixed to the side frames 3.

  A mounting hole 61f penetrating in the axial direction of the plate cylinder 2 is formed at a position corresponding to the second through hole 3b of the fourth extending frame 61e, and an inner peripheral surface is formed in the mounting hole 61f. A bush 65 having a screw hole 65b in which a female screw portion 65a is formed is fitted.

  Below the second guide shaft 63, there is provided a thin rod-like actuating rod 66 extending in the axial direction of the plate cylinder 2. On the outer peripheral surfaces of both end portions of the actuating rod 66, male rods opposite to each other are provided. A screw portion 66a is formed.

The female screw portions 65a of the bushes 65 are screwed into the male screw portions 66a of the operating rods 66 so as to be able to advance and retract, and both end portions of the operating rods 66 are connected to the second through holes 3b. Is inserted.

  A drive motor 7 is provided on the side of the opposite side of the plate cylinder 2 of the one side frame 3 so that the rotational axis is directed in the axial direction of the plate cylinder 2.

  The output shaft 7 a of the drive motor 7 is connected to one end of the operating rod 66, and the operating rod 66 rotates in conjunction with the rotational drive of the drive motor 7.

  The support frame 61, the actuating rod 66, and the drive motor 7 constitute the moving means 8 of the present invention. The actuating rod 66 is rotated by the drive motor 7 so that the support frame 61 and the support frame 61 together. Both the first cylindrical portions 6a are moved in the axial direction of the plate cylinder 2.

  A rotary encoder 71 is provided above the drive motor 7 such that the rotational axis is directed in the axial direction of the plate cylinder 2, and the first spur gear 71 b rotates on the rotational shaft 71 a of the rotary encoder 71. It is provided integrally.

  On the other hand, the output shaft 7a of the drive motor 7 is integrally provided with a second spur gear 7b that meshes with the first spur gear 71b. When the output shaft 7a of the drive motor 7 is rotated, the first spur gear is rotated. The rotary encoder 71 detects the rotation angle of the drive motor 7 by the rotation of the rotary shaft 71a via 71b and the second spur gear 7b.

  Furthermore, a third guide shaft 67 extending in the axial direction of the plate cylinder 2 toward the side frame 3 is provided at a position corresponding to the third through hole 3c on the lower end side of the fourth extension frame 61e. ing.

  The third guide shaft 67 is slidably inserted into the third through hole 3c, and a spherical body 67a is attached to a substantially central portion thereof.

  A mounting frame 68 extending in the axial direction of the plate cylinder 2 from the one side frame 3 toward the counterplate cylinder 2 is provided below the third guide shaft 67.

  A limit sensor 69 having a switch portion 69a at the top is attached to the distal end side and the proximal end side of the mounting frame 68, respectively, and when the first cylinder portion 6a moves in the axial direction of the plate cylinder 2, a third sensor When the guide shaft 67 moves in the axial direction of the plate cylinder 2 and the spherical body 67a contacts the switch part 69a of each limit sensor 69, the first cylinder part 6a is not moved any further. Yes.

  A control unit (control unit) 9 is connected to the cylinder 32, the ball screw mechanism 33, the rotation drive unit 34, the drive motor 7, and the rotary encoder 71.

  The control unit 9 outputs an operation signal to the cylinder 32 and the ball screw mechanism 33 in a state where the lifting table 10 supporting the plate cylinder 2 before printing is in the roll mounting position P, so that the both support shafts 31 are moved to the above-described positions. The plate cylinder 2 is advanced to both axial ends of the plate cylinder 2 so that the plate cylinder 2 is rotatably supported by the both side frames 3.

  The control unit 9 stores the position of the first cylinder 6a set corresponding to the axial length of the plate cylinder 2, and the storage unit 9a stores the position. A calculation unit 9b for calculating a movement amount for moving the first cylinder part to the position of the first cylinder part 6a, and an operation signal is output to the drive motor 7 and calculated by the calculation unit 9b. The first cylinder portion 6a is configured to move based on the amount of movement.

  Further, the control unit 9 supports the plate cylinder 2 with the lifting table 10 in a state where the plate cylinder 2 is rotatably supported on the support shafts 31, and the cylinder 32 and the ball screw. The mechanism 33 is controlled so that the both support shafts 31 are retracted from both ends of the plate cylinder 2 in the axial center direction, and the plate cylinder 2 is removed from both the side frames 3 and delivered to the lifting table 10. .

  As shown in FIGS. 5A to 5C, when the support shaft 31 retreats while being engaged with the end portion in the axial direction of the plate cylinder 2, one shaft end is the plate cylinder 2. When the other shaft end is engaged with the end portion of the plate cylinder 2 in a state of being detached from the end portion of the plate cylinder 2, the end portion in the axial direction of the plate cylinder 2 is in contact with the first cylindrical portion 6a. The other shaft end is detached from the end portion of the plate cylinder.

  Next, the mounting operation of the plate cylinder 2 in the printing apparatus 1 will be described.

  First, in a state in which both support shafts 31 do not support the plate cylinder 2, the plate cylinder 2 before printing is mounted on the lifting table 10, and the type (length in the axial direction of the plate cylinder 2) of the plate cylinder 2 is operated by an operation unit (not shown). Etc.) and then press the installation work start button on the operation unit. Then, the control unit 9 moves to move from the current position of the first tube portion 6a to the position of the first tube portion 6a set corresponding to the input length of the plate cylinder 2 in the axial direction. The amount is calculated, and the first cylindrical portion 6a is moved based on the amount of movement.

  Thereafter, the elevating table 10 rises to the roll mounting position P, and the support shaft 31 corresponds to the axial center end of the plate cylinder 2 before printing.

  Thereafter, both the support shafts 31 are advanced by the cylinder 32 and the ball screw mechanism 33 to engage with the respective recessed portions 2a of the plate cylinder 2, and the mounting operation of the plate cylinder 2 is completed.

  Next, the removal work of the plate cylinder 2 in the printing apparatus 1 will be described.

  First, in a state where the plate cylinder 2 is supported by the both support shafts 31, the lifting table 10 is raised to support the plate cylinder 2 after printing. Then, the worker presses a removal work start button of an operation unit (not shown). Then, both the support shafts 31 are moved backward with respect to the plate cylinder 2 by the cylinder 32 and the ball screw mechanism 33.

  At this time, when one support shaft 31 is disengaged from the plate cylinder 2 and the other support shaft 31 is bitten into the plate cylinder 2 and is not easily detached, as shown in FIGS. 5 (a) and 5 (b), the plate cylinder 2 is pulled by the other support shaft 31, and the shaft end of the plate cylinder 2 comes into contact with the tip of the first cylinder portion 6a and stops. When the other support shaft 31 is further retracted, the plate cylinder 2 does not move thereafter, and the shaft end of the other support shaft 31 is detached from the end of the plate cylinder 2 as shown in FIG. Therefore, the plate cylinder 2 can be easily detached from the side frame 3.

  As described above, according to the first embodiment of the present invention, the length of the cylindrical cover 6 is changed even when the length of each support shaft 31 is changed when the plate cylinder 2 is changed in length in the axial direction. Therefore, the entire area of each support shaft 31 can be surrounded by the cylindrical cover 6 according to the length of each support shaft 31. Therefore, it is possible to prevent ink scattered from the plate cylinder 2 from adhering to the support shaft 31. Further, since the first cylindrical portion 6a is a rigid body, when the axial center end of the plate cylinder 2 comes into contact with the first cylindrical portion 6a, the first cylindrical portion 6a causes a reaction force on the axial center end of the plate cylinder 2. Will definitely join. Therefore, the first cylinder portion 6a reliably stops the movement of the plate cylinder 2 and only the support shaft 31 moves backward, so that the plate cylinder 2 can be easily removed from both side frames 3.

  Moreover, since the position of the 1st cylinder part 6a changes automatically corresponding to the plate cylinder 2 to replace | exchange, the operation | work which changes the length of the cylindrical cover 6 becomes easy, and an operator's burden can be reduced.

Further, when one drive motor 7 is rotationally driven, the positions of both cylindrical covers 6 are changed simultaneously, so that it is not necessary to prepare a drive motor 7 for each cylindrical cover 6, and the simple printing apparatus 1 can be made at low cost. it can.
<< Embodiment 2 of the Invention >>
6 to 8 show a printing apparatus 1 according to Embodiment 2 of the present invention. In the second embodiment, the structure for moving the first cylindrical portion 6a in the axial direction of the plate cylinder 2 is the same as the first embodiment except that the structure is different from the first embodiment. I will explain only. In addition, the thickness of the 2nd cylinder part 6b of FIG. 7 is exaggerated for convenience.

  In the vicinity of the support shaft 31 of one side frame (main body frame) 3 of the second embodiment, as shown in FIG. 6, a fourth through hole 3d penetrating in the axial direction of the plate cylinder 2 is formed.

  Below the doctor blade 4 of the second embodiment, there is provided a slide shaft 11 slidably inserted into the fourth through hole 3d. The end of the slide shaft 11 on the plate cylinder 2 side is as shown in FIG. Further, the connecting member 12 extending in the horizontal direction is connected to the first cylindrical portion 6a.

  As shown in FIG. 8, a plurality of fitting recesses 11 a that open upward are formed at predetermined intervals in the axial direction of the plate cylinder 2 on the side of the anti-plate cylinder 2 of the side frame 3 on the slide shaft 11. Has been.

  In addition, an annular member 15 that is externally fitted to the slide shaft 11 is provided on the periphery of the fourth through hole 3d on the side of the reverse plate cylinder 2 in the side frame 3, and an index plunger ( Positioning means) 13 is attached.

  The index plunger 13 has a pin 13a that expands and contracts in a direction intersecting with the axial center direction of the plate cylinder 2 and protrudes inward of the annular member 15, and the pin 13a is extended to fit each of the fittings. By fitting in the recess 11a, the position of the plate cylinder 2 in the axial direction of the first cylindrical portion 6a is determined.

  A resin sensor case 14 is attached to the lower end of the first cylindrical portion 6a of the second embodiment.

  In the sensor case 14, the proximity sensor 14 a is inward, and as shown by the phantom line in FIG. 6, even if each first cylinder portion 6 a protrudes excessively from the plate cylinder 2 to be replaced, the lifting table The proximity sensor 14 a detects the plate cylinder 2 rising by 10 to prevent the plate cylinder 2 from contacting the cylindrical cover 6.

  The attachment and removal operations of the plate cylinder 2 of the printing apparatus 1 according to the second embodiment of the present invention are different from the first embodiment except that the cylindrical cover 6 is manually expanded and contracted. The detailed description is omitted because it is the same.

  As described above, according to the second embodiment of the present invention, when the first cylindrical portion 6a is moved and the pin 13a of the index plunger 13 is fitted into each fitting recess 11a, the first predetermined amount is set. Since the position is determined by moving the cylindrical portion 6a, the length adjusting operation of the cylindrical cover 6 at the time of replacing the plate cylinder 2 can be performed easily and accurately.

  In the first and second embodiments of the present invention, the second cylindrical portion 6b is made of resin. However, the present invention is not limited to this, and it may be made of rubber as long as it has flexibility.

  In the first and second embodiments of the present invention, the first cylinder portion 6a is made of metal. However, when the plate cylinder 2 is removed, the impact when the plate cylinder 2 comes into contact with the first cylinder portion 6a is absorbed. For this purpose, a resin ring member may be attached to the peripheral edge of the first tube portion 6a.

  Furthermore, a cover that covers the periphery of the male screw portion 66a, the second guide shaft 63, and the slide shaft 11 may be provided so that ink scattered from the plate cylinder 2 does not adhere.

  In addition, the structure applied to the printing apparatus 1 in Embodiments 1 and 2 of the present invention can also be used in a coating apparatus that coats the web W.

  The present invention is suitable for a printing coating apparatus that transfers a transfer liquid such as a coating liquid or ink onto a continuously conveyed web.

1 Printing device (print coating device)
2 Plate cylinder (gravure roll)
3 Side frame (body frame)
3d 4th through-hole 6 cylindrical cover 6a 1st cylinder part 6b 2nd cylinder part 7 drive motor 8 moving means 9 control part (control means)
9a Storage unit 9b Calculation unit 10 Lifting table 11 Slide shaft 11a Fitting recess 12 Connecting member 13 Index plunger (positioning means)
13a Pin 31 Support shaft 61 Support frame 65a Female thread part 65b Screw hole 66 Actuating rod 66a Male thread part P Roll mounting position

Claims (4)

Printing in which gravure rolls mounted on a lifting table and raised to a roll mounting position are rotatably supported by a pair of support shafts and mounted on the fixed side of the apparatus, which are spaced apart from each other in the horizontal direction. A coating device,
On each of the support shafts, a cylindrical cover positioned on each device fixing side is fitted with a clearance from the support shaft.
The cylindrical cover has a first cylindrical portion made of a rigid body movable in the axial direction of the gravure roll, one end fixed to the first cylindrical portion, and the other end fixed to the apparatus fixing side, and the first cylinder A flexible second tube portion that can adjust the length of the gravure roll in the axial direction along with the movement of the portion,
The both support shafts are provided on the apparatus fixing side so as to be able to advance and retreat with respect to the gravure roll, and engage and support the end portion of the gravure roll that has been raised to the roll mounting position by an advancing operation, thereby supporting the gravure roll. While receiving from the lifting table, the gravure roll is separated from the end of the gravure roll by a retreating operation, and the gravure roll is transferred to the lifting table waiting at the roll mounting position, and at the time of the retreating operation, one shaft end is a gravure roll When the other shaft end is engaged with the end of the gravure roll in a state of being separated from the end of the gravure roll, the gravure roll stops with the end abutting against the cylindrical cover, and the other A printing coating apparatus characterized in that the shaft end is detached from the end of the gravure roll. In the printing coating apparatus according to claim 1 ,
Moving means for moving the first tube portion in the axial direction of the gravure roll;
A storage unit for storing the position of the first tube part set corresponding to the length in the axial direction of the gravure roll, and the first tube up to the position of the first tube part stored in the storage unit A calculating unit that calculates a moving amount for moving the unit, and a control unit that controls the moving unit to move the first tube unit based on the moving amount calculated by the calculating unit. A printing coating apparatus characterized by that. In the printing coating apparatus of Claim 2 ,
The moving means has a rod shape extending in the axial direction of the gravure roll, and an operating rod having male screw portions opposite to each other formed on the outer peripheral surface of each end portion;
A drive motor connected to one end of the actuating rod and driving the actuating rod to rotate;
A female screw part screwed into the male screw part so as to be able to be screwed and unscrewed has a screw hole formed in an inner peripheral surface, and includes a pair of support frames that respectively support the first cylindrical parts. A printing coating apparatus characterized by comprising: In the printing coating apparatus according to claim 1,
A main body frame having a through-hole penetrating in the axial direction of the gravure roll; and a slide shaft that is slidably inserted into the through-hole and connected to the first cylindrical portion,
The slide shaft has a plurality of fitting recesses formed at predetermined intervals in the axial direction of the gravure roll,
The main body frame is provided with positioning means having a pin that expands and contracts in a direction intersecting with the axial direction of the gravure roll, and the first cylindrical portion is formed by extending the pin and fitting it into the fitting recesses. A printing coating apparatus, wherein the gravure roll is configured to determine a position in an axial direction of the gravure roll.

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