JP5446773B2 - Printing pressure application device for printing roll - Google Patents

Description

  The present invention relates to a printing apparatus in which a printing roll such as an impression cylinder, a plate cylinder, a blanket roll, etc. in a printing apparatus is brought into contact with a required pressing object so as to be pressed from above with a required printing pressure. The present invention relates to a printing pressure applying device for a printing roll used in the above.

  In recent years, printing technology using conductive paste as printing ink, for example, intaglio offset printing technology, is used to print electronic circuits such as liquid crystal displays on a substrate instead of microfabrication such as etching of metal vapor deposition films. Techniques to do this have been proposed.

  When an electronic circuit such as the liquid crystal display is formed on a substrate, a fine line width of about 10 μm, for example, may be required as an electrode line width. Further, when a plurality of precise electronic circuits having a line width of about 10 μm are formed on the substrate by superimposing them, it may be necessary to suppress the overlay deviation to several μm.

  Therefore, when an electronic circuit is formed on the substrate by printing, high printing accuracy is required compared to normal offset printing for printing characters and images on paper or the like. A very high accuracy is required for the printing pressure applied between the printing plate and the printing target. For this reason, it is advantageous that the offset printing apparatus when performing offset printing with high printing accuracy is a type that uses a plate-like plate similar to a printing target as a plate.

  FIG. 6 shows an example of a conventionally proposed offset printing apparatus using a flat plate. A linear guide rail 2 extending in a uniaxial direction is provided on a base 1 and is parallel to the linear guide rail 2. A moving table (provided with a ball screw mechanism 3 driven by a servo motor (stage motor) 4) and arranged so that a flat plate 5 and a printing target (work substrate) 6 can be arranged and fixed in the uniaxial direction at predetermined intervals. A stage 7 is slidably attached to the linear guide rail 2 and can be reciprocated by the ball screw mechanism 3.

  Further, a blanket roll (blanket cylinder) 8 is disposed at a position above the required dimension of the moving table 7 so as to extend in a horizontal direction perpendicular to the longitudinal direction of the linear guide rail 2 that is the moving direction of the moving table 7. The rotating shafts at both ends of the blanket roll 8 are supported by a lifting jack (loading device) 9 disposed on the lower side and attached to the base 1.

  Reference numeral 10 denotes a motor for driving the rotation of the blanket roll 8, which is connected to one rotary shaft of the blanket roll 8 via a speed reducer 11. Reference numeral 12 denotes an inking device capable of moving up and down for inking the plate 5 held on the moving table 7.

  According to the offset printing apparatus having such a configuration, the moving table 7 is moved by the ball screw mechanism 3 so that the plate 5 on the moving table 7 is guided to the inking device 12 to ink the plate 5. Then, as the moving table 7 is moved by the ball screw mechanism 3, the plate 5 and the printing object 6 held on the moving table 7 are sequentially passed through the position immediately below the blanket roll 8. The blanket roll 8 that is rotationally driven by the rotational drive motor 10 is pulled downward by the jack 9 so that the plate 5 and the printing target 6 are brought into contact with each other in order from above, with the required printing pressure being applied. After the ink is transferred (received) from the inked plate 5 to the blanket roll 8, the ink is moved above the blanket roll 8. And to perform the re-transfer (printing) processing for the ink to be printed 6 are also available implement offset printing (e.g., see Patent Document 1).

  As a mechanism for bringing the blanket roll in the offset printing apparatus into contact with the plate or the printing target with a required printing pressure, a jack is arranged on the upper side of the blanket roll, and the blanket roll is directed downward by the jack. A configuration for pushing is also widely adopted.

Japanese Patent No. 3293978

  However, in the offset printing apparatus shown in FIG. 6, the jack 9 acts on the blanket roll 8 while the blanket roll 8 is pressed against the plate 5 or the printing object 6 in a state where a required printing pressure is applied. In this case, since the blanket roll 8 is in contact with the plate 5 and the printing object 6 and hardly moves, the drive motor of the jack 9 moves to the drive motor. The supplied electric energy cannot be consumed as work, and therefore most of the electric energy supplied to the drive motor is converted into heat, so that the jack 9 generates more heat. End up.

  Therefore, when the above-described offset printing apparatus is used to form a precise electronic circuit having a line width of about 10 μm on the substrate as described above by printing, the blanket roll 8 and the base board accompanying the heat generation of the jack 9 are used. In reality, there is a concern that thermal deformation of the mechanical structure including the table 1 may affect the printing accuracy.

  However, the printing accuracy required when performing normal offset printing for printing characters and images on paper or the like is due to thermal deformation caused by the heating of the jack 9 for raising and lowering the blanket roll 8 and applying printing pressure. Since the influence is small, in the conventional offset printing apparatus, the deterioration of the printing accuracy due to the thermal deformation of the mechanical structure accompanying the heat generation of the jack 9 used for raising and lowering the blanket roll 8 and applying the printing pressure as described above. Is not considered in particular, and no countermeasures have been proposed.

  Therefore, the present inventors set the jack to the blanket so that the thermal deformation of the mechanical structure due to the heating of the jack for raising and lowering the blanket roll and applying the printing pressure in the offset printing apparatus can be suppressed. The jack drive motor is exposed on the upper side of the support frame that supports the blanket roll so that it can be moved up and down, so that heat generated by the heat generated by the jack drive motor is released into the atmosphere. It is planned to have a configuration that can be efficiently diffused.

  Therefore, the present invention further develops the idea of providing the drive motor for the jack that applies the printing pressure to the blanket roll as described above, by exposing it on the upper side of the support frame that supports the blanket roll to be movable up and down, Applying printing pressure to a printing roll that can perform high-precision printing by further suppressing thermal deformation of the mechanical structure due to heat generation of the jack for raising and lowering the printing roll such as a blanket roll and applying printing pressure. The device is to be provided.

In order to solve the above-mentioned problem, the present invention corresponds to claim 1 and includes a roll holding frame for rotatably holding a printing roll disposed above a pressing object, the left and right columns and the columns. thereby vertically movably arranged inside the support frame of the portal consisting of the beam member for connecting the upper ends, the upper side of the beam material before Symbol supporting frame, a certain height disposed in parallel across a gap A horizontal member formed by welding each leg member to a lower surface of a portion close to one end in the width direction, including a leg member having a through hole for passing the output shaft of the gear box toward one end in the width direction as a horizontal flat plate shape; A vertical member for mounting a drive motor having a lower end welded to the upper side of the other end in the width direction of the horizontal member; and a rib member integrally welded between one side surface of the vertical member and the upper surface of the horizontal member. bracket made welding rib structure Provided with a gearbox connected to a drive motor and an output side mounted to the bracket, and the screw shaft connected to and upper end extending vertically on the output side of the front Symbol gearbox, screwed to the screw shaft constitute the jack comprising a nut member, the pre-Symbol nut member of the jack, the attachment comprising configuration before Symbol roll holding frame.

  Furthermore, in the said structure, it is set as the structure which made the rib material in a bracket the shape which a height dimension reduces as it leaves | separates from a vertical member.

  Furthermore, in each of the above configurations, the bracket is configured to be made of zirconia ceramics.

  According to the printing pressure applying apparatus for a printing roll of the present invention, the following excellent effects are exhibited.

(1) Inside a portal support frame made of a beam material that connects a left and right column and upper ends of each column to a roll holding frame that rotatably holds a printing roll disposed above a pressing object. gearbox well as vertically movably arranged on the upper side of the beam material before Symbol supporting frame, a leg member having a certain height disposed in parallel across a gap in the width direction near one end as a horizontal flat plate shape The horizontal member is provided with a through hole for passing the output shaft and welded to the lower surface of the portion near one end in the width direction, and the lower end is welded to the upper side of the other end edge in the width direction of the horizontal member. A drive motor provided with a bracket having a welded rib structure comprising a vertical member for mounting the drive motor, and a rib member integrally welded between one side surface of the vertical member and the upper surface of the horizontal member. as well as A gearbox connected to the output side of a screw shaft having an and upper side extends in the vertical direction is connected to the output side of the front Symbol gearbox constitutes a jack comprising a nut member screwed to the screw shaft, the the pre-Symbol nut member of the jack, since the mounting comprising configuration before Symbol roll holding frame, even if the drive motor generates heat jack imparting printing pressure to the printing roll, the bracket used for mounting of the drive motor Since the cross-sectional area of heat transfer is reduced as a welded rib structure, heat conduction from the driving motor generating heat to the beam material of the support frame via the bracket can be suppressed. The amount of heat to be heated can be reduced. Therefore, the thermal deformation of the mechanical structure due to the heat generation of the jack can be greatly suppressed, and the geometric reproducibility of the shape, size, position, etc. of the print pattern can be improved, so high-precision printing is performed. be able to.
(2) As described above, the bracket has a leg member having a certain height dimension arranged in parallel with a gap, and a through hole for passing the output shaft of the gear box to one end in the width direction as a horizontal flat plate shape. A horizontal member having a hole and welding each of the leg members to the lower surface near one end in the width direction; and a vertical member for attaching a drive motor having a lower end welded to the upper side of the width direction other end edge of the horizontal member; by that you have a structure in which the welding rib structure composed of a rib material which is welded together between one side surface and the upper surface of the horizontal member of the vertical members, the heat for obtaining the above effect (1) A bracket having a welded rib structure with a small transmission cross-sectional area can be easily realized.
(3) By adopting a structure in which the height of the rib material in the bracket is reduced as it is separated from the vertical member, the cross-sectional area related to heat transfer of the rib material is separated from the vertical member. Therefore, heat conduction through the rib member from the vertical member to which the drive motor of the jack is attached to the horizontal member can be suppressed, and heat conduction from the drive motor to the support frame through the bracket can be further reduced. Can be suppressed.
(4) Since the bracket is made of zirconia ceramic, the heat transfer coefficient of the bracket itself can be reduced, so that heat conduction from the drive motor of the jack to the support frame via the bracket can be reduced. Furthermore, it can suppress significantly.
(5) As described above, since it becomes possible to perform printing with higher accuracy than in the past, a precise electronic circuit having a line width of about 10 μm can be printed with a positional deviation of the printing position from several μm. It is possible to obtain an advantageous configuration in the case where precise printing is performed with high accuracy, such as when printing is performed with the order of μm.

It is a schematic front view which shows one Embodiment of the printing pressure provision apparatus of the roll for printing of this invention. FIG. 2 is an enlarged cut front view showing a bracket used for installing a jack drive motor on the beam material of the support frame in FIG. 1. It is an AA direction arrow line view of FIG. It is a BB direction arrow line view of FIG. It is a schematic side view which shows the whole structure of the offset printing apparatus provided with the transfer apparatus of FIG. It is a figure which shows the outline | summary of an example of the offset printing apparatus using the plate-shaped plate proposed conventionally.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 to FIG. 5 show an embodiment of the printing pressure application device for a printing roll according to the present invention, for example, application of printing pressure to a blanket roll serving as a pressing-side printing roll in the offset printing device shown in FIG. This is shown as follows.

  Here, first, the offset printing apparatus shown in FIG. 5 will be outlined. In the offset printing apparatus, guide rails 14 extending in one direction are provided on the upper side of the horizontal base 13 in pairs, for example. On the guide rail 14, as a moving table for holding a flat plate 15 as a pressing object and a flat print object 16 such as a substrate, for example, the plate 15 and the print object 16 are individually held. The plate table 17 and the printing target table 18 that can be arranged are arranged side by side from one end side in the longitudinal direction of the guide rail 14 (left side in FIG. 1), and can be reciprocated (running) independently by an individual driving device (not shown). Install as follows.

  Furthermore, at a midway position where the plate table 17 and the printing target table 18 can travel together in the longitudinal direction of the guide rail 14, for example, at a required position on the gantry 13 corresponding to the longitudinal intermediate position of the guide rail 14, A printing pressure applying device 19 for a printing roll of the present invention (hereinafter simply referred to as a printing pressure applying device of the present invention) 19 provided with a blanket roll 20 extending in a horizontal direction perpendicular to the longitudinal direction of the guide rail 14; Another halfway position in which the plate table 17 can travel in the longitudinal direction of the guide rail 14, for example, a required distance away from the installation position of the printing pressure application device 19 of the present invention toward one end in the longitudinal direction of the guide rail 14. An inking for inking the plate 15 held on the plate table 17 at a required position on the gantry 13 as a position. There a structure in which a ring 21.

  The printing pressure application device 19 of the present invention applied to the offset printing device having the above-described configuration has a configuration as shown in FIGS. In the following, for convenience of explanation, the longitudinal direction of the guide rail 14 will be described as the front-rear direction, and the horizontal direction orthogonal thereto will be described as the left-right direction.

  That is, the beam member 24 extends in the horizontal direction at the upper ends of a pair of left and right columns 23 having a required height dimension in the vertical direction at a position corresponding to the longitudinal center position of the guide rail 14 on the frame 13. A gate-shaped support frame 22 that is integrally connected with each other is provided so as to straddle the guide rail 14.

  Further, the rotation shafts at both ends of the blanket roll 20 are held by bearing housings 25a provided at both left and right ends of the roll holding frame 25 through bearings (not shown), respectively. A required portion is attached to a required portion of the support frame 22, for example, each column 23 so as to be slidable in the vertical direction via a linear guide 23a in the vertical direction.

  In the beam material 24 of the support frame 22, bearings 31 are respectively provided through the left and right portions above the left and right end portions of the roll holding frame 25, and the bearings 31 are vertically disposed on the bearings 31. The portions close to the upper end of the screw shaft 27 of the length dimension are respectively held rotatably.

  In addition, an input shaft is connected to the beam member 24 above the position near each of the bearings 31 via a coupling motor 33 on the output side of the drive motor 28 and an output side of the drive motor 28. The gear boxes 29 are individually installed via brackets 32, and upper ends (protruding ends) of the screw shafts 27 protruding above the bearings 31 are provided on the output shafts of the gear boxes 29. , And the coupling 34, respectively.

  Further, the nut members 30 that are individually screwed into the respective screw shafts 27 are attached to the upper sides of the left and right ends of the roll holding frame 25 via the required attachment members 35, and the drive motors for lifting and lowering are provided. 28, each screw shaft 27 that is rotationally driven through a corresponding gear box 29 by the operation of each drive motor 28, and each nut member 30 constitute a ball screw type jack 26. Thus, the rolls holding the blanket roll 20 integrally with the nut members 30 by rotating the screw shafts 27 through the gear boxes 29 by the operation of the drive motors 28 of the jacks 26. The holding frame 25 can be moved up and down.

  As the roll holding frame 25 holding the blanket roll 20 by the jacks 26 is raised and lowered, the blanket roll 20 is a plate whose lower end portion of the outer peripheral surface of the blanket roll 20 is held on the plate table 17. 15 and the lower end portion of the outer peripheral surface of the blanket roll 20 from the height position above the upper surface of the printing target 16 held on the printing target table 18 and the printing target table 18, the plate 15 and printing on the plate table 17. It is assumed that it can be moved up and down in a range up to a height position slightly below the upper surface of the print target 16 on the target table 18. Thereby, when the printing plate 15 held on the printing plate table 17 or the printing target held on the printing target table 18 is arranged at a position directly below the blanket roll 20, the blanket roll 20 is moved by the jacks 26. By lowering together with the roll holding frame 25, the blanket roll 20 is brought into contact with the plate 15 on the plate table 17 and the printing target 16 on the printing target table 18 from above, and in contact with the plate 15 and the printing target 16. The blanket roll 20 is urged downward together with the roll holding frame 25 by the jacks 26 so that the blanket roll 20 can be pressed against the plate 15 or the printing object 16 with a required printing pressure applied. It is.

  Further, the brackets 32 for installing the drive motors 28 and the gear boxes 29 of the jacks 26 above the beam members 24 of the support frame 22 are configured so that the heat generated by the drive motor 28 is generated by the heat generated by the drive motors 28. In order to make it difficult to be transmitted to the support frame 22 due to heat conduction through 32, a welded rib structure as shown in FIGS.

  Specifically, each bracket 32 has a horizontal flat plate on the upper side of two vertical rectangular plate-like leg members 36 having a required height dimension arranged in parallel with a required gap in the front-rear direction. A horizontal member 37 having a through hole 38 for passing the output shaft of the gear box 29 at a required portion near one end in the width direction as a shape, and a portion near the other end in the width direction of the horizontal member 37 in each of the above. It arrange | positions so that a required dimension may be projected on the outer side of the width direction of the leg member 36, and the upper end part of each said leg member 36 is integrated by the welding to each corresponding location in the lower surface of the width direction one end part of the said horizontal member 37, respectively. Attach to.

  Further, a vertical rectangular plate-shaped vertical member 39 provided with a motor mounting hole 40 for inserting the front end portion of the casing of the drive motor 28 is disposed above the other end in the width direction of the horizontal member 37. Then, the lower end of the vertical member 39 is integrally attached to the upper surface of the other end in the width direction of the horizontal member 37 by welding.

  Furthermore, the cross-sectional area of heat transfer gradually increases in the direction away from the vertical member 39 between the both end edges in the front-rear direction of the horizontal member 37 and the both end edges in the front-rear direction of the vertical member 39. The rib members 41 having a substantially right triangle shape whose height dimension gradually decreases toward the direction away from the vertical member 39 are arranged so as to correspond to the horizontal member 37 and the vertical member 39, respectively. The parts are integrally attached to the parts by welding.

  Each rib member 41 should be as thin as possible within the allowable range where the required strength can be obtained and the surface area should be as large as possible, and each leg member 36 should be cut as much as possible within the allowable range where the required strength can be obtained. It is assumed that the area is made small.

  Further, as the material of the bracket 32, a material having as little heat conduction coefficient as possible is used. Specifically, SUS304 (16.7 W / mK) is preferable to iron (thermal conductivity coefficient 84 W / mK), and further, those having a smaller thermal conductivity coefficient, such as zirconia ceramics (3 W / mK). More preferred.

  Each bracket 32 having the above-described configuration is attached by inserting the tip end portion of the casing of the drive motor 28 inward into the motor mounting hole 40 of the vertical member 39, and the gear box 29 above the horizontal member 37. Are arranged so that the output shaft of the gear box 29 passes through the through hole 38, and the input shaft of the gear box 29 is connected to the output side of the drive motor 28 via the coupling 33. .

  Further, the bracket 32 is a screw that holds the output shaft of the gear box 29 passed through the through hole 38 of the horizontal member 37 on the bearing 31 provided on the beam member 24 above the beam member 24 of the support frame 22. A flange portion 36a provided at the lower end portion of each leg member 36 in a state of being positioned coaxially with the shaft 27 is fixed to a corresponding portion of the upper surface of the beam member 24 as a bolt (not shown). It is designed to be installed by means.

  A coupling 33 for connecting the output side of the drive motor 28 and the input shaft of the gear box 29, and a coupling for connecting the output shaft of the gear box 29 and the upper end of the screw shaft 27. It is assumed that 34 has a low thermal conductivity as much as possible.

  Reference numeral 42 denotes a rotation driving motor connected to one rotation shaft of the blanket roll 20 held by the roll holding frame 25 via a reduction gear 43.

  In the case of performing offset printing using the offset printing apparatus having the printing pressure applying apparatus 19 of the present invention having the above-described configuration, first, the plate table 17 holding the plate 15 is sent to the inking device 21, and the above-mentioned A proper amount of inking is performed on the plate 15, and the plate table 17 holding the inked plate 15 is set closer to the other end in the longitudinal direction of the guide rail 14 than the printing pressure applying device 19 of the present invention. It is moved to a predetermined print processing start position (not shown). The print target table 18 holds the print target 16.

  Next, the plate table 17 holding the plate 15 and the print target table 18 holding the print target 16 are started to travel from the other end in the longitudinal direction along the guide rail 14 to the one end side. When the plate 15 held on the printing object 16 and the printing object 16 held on the printing object table 18 sequentially pass through the position immediately below the blanket roll 20 in the printing pressure application device 19 of the present invention, the rotation driving motor 41 performs the above operation. The blanket roll 20 rolled (rotated) at a peripheral speed synchronized with the moving speed of the plate 15 and the printing object 16 and lowered together with the roll holding frame 25 by the operation of each jack 26 is connected to the plate 15 on the plate table 17. The printing object 16 on the printing object table 18 is sequentially brought into contact with the printing object 16 by pressing the printing object 16 from above with a required printing pressure applied. As a result, the ink transfer (receiving) process from the inked plate 15 to the blanket roll 20 and the retransfer (printing) process from the blanket roll 20 to the printing target are performed in order, thereby performing offset printing. To be done.

  In the transfer (acceptance) process and the retransfer (print) process, a downward thrust force is applied to the blanket roll (a) in order to apply a required printing pressure from the blanket roll 20 to the plate 15 or the printing object 16. In each of the jacks 26 that are continuously operated, most of the electric energy supplied to the respective drive motors 28 is converted into heat, so that each drive motor 28 in each jack 26 generates heat. However, each drive motor 28 that generates heat has a welded rib structure made of a material having a small heat conduction coefficient, and a rib member provided between the vertical member 39 and the horizontal member 37 to which the drive motor 28 is attached. 41 is configured such that the cross-sectional area of heat transfer gradually decreases in a direction away from the vertical member 39, so that the drive motor 28 generates heat. Heat conduction from the vertical member 39 that directly receives heat to the horizontal member 37 via the lower end surface of the vertical member 39 and the rib member 41 is suppressed, and each leg member 36 is within an allowable range where necessary strength can be obtained. The cross-sectional area is made as small as possible so that the heat conduction from the upper end side to the lower end side of each leg member 36 from the horizontal member 37 can be suppressed via an individual bracket 32. Therefore, heat conduction from the drive motor 28 of each of the jacks 26 that generates heat to the beam member 24 of the support frame 22 via the brackets 32 is suppressed. .

  Further, each bracket 32 has a long heat transfer distance so that the direction of the output shaft of the drive motor 28 and the direction of the output shaft of the gear box 29 are perpendicular to each other. In addition, heat conduction from the drive motors 28 that generate heat to the beam member 24 of the support frame 22 via the brackets 32 can be suppressed.

  Further, the surface area of the rib member 41 of each bracket 32 is made as large as possible, and each of the drive motors 28 is provided so as to be exposed outside the beam member 24 of the support frame 22. Therefore, it is possible to efficiently radiate heat to the atmosphere from the rib members 41 of the brackets 32 and the drive motors 28 themselves.

  As described above, most of the heat generated by the drive motor 28 of each jack 26 can be released (dissipated) to the surrounding environment by radiation, and is transmitted to the mechanical structure such as the support frame 22. Therefore, the influence of thermal deformation of the mechanical structure portion can be suppressed to an allowable value or less.

According to the numerical calculation performed by the present inventors, when the jack 26 is considered as a heat source, the amount of heat that escapes to the surrounding environment by radiation is
P = ρ · ε · A (T2-T1)
Here, ρ = 5.67 × 10 ⁻⁸ [Wm ⁻² K ⁻⁴ ] (Steffan-Boltzmann constant), ε = 0.5 to 0.9 (iron) emissivity, A [m2] surface area, T2 [ K] Absolute temperature of jack, T1 [K] Absolute temperature of surrounding environment.

On the other hand, the amount of heat transferred from the drive motor of the jack 26 to the support frame 22 through the bracket 32 is as follows.
Q = k.S. (T2-Ts1) / L
Here, k [W / mK] heat transfer coefficient, S [m2] cross-sectional area, L [m] length, T2 [K] jack absolute temperature, and Ts1 [K] apparatus temperature can be represented.

Here, the surface area of the jack 26 is A = 0.0688 m ² , the temperature of the jack 26 is 30 ° C. (303 K), the ambient environment temperature is 22 ° C. (295 K), ε = 0.5, S = 0.001108 m ² , L = 0.133 m and k = 3 [W / mK] (zirconia ceramics), P = 1.67 W, Q = 0.20 W It is clear that it can be made sufficiently larger than the amount of heat conducted.

  Therefore, according to the offset printing apparatus employing the printing pressure applying apparatus of the present invention, the thermal deformation of the mechanical structure due to the heat generation of the jack 26 can be significantly suppressed, and the shape, size, position, etc. of the printed pattern can be reduced. High reproducibility increases, so that highly accurate printing can be performed.

  As described above, since it becomes possible to perform printing with higher accuracy than in the past, a precise electronic circuit with a line width of about 10 μm can be printed with a positional deviation of the printing position from several μm to sub-μm order. It is possible to obtain an advantageous configuration in the case where precise printing is performed with high accuracy, such as when printing is performed while suppressing.

  The present invention is not limited to the above embodiment, and the plate 15 and the print target 16 can be moved between the guide rail 14 and the plate 15 as long as the plate 15 and the print target 16 can be moved below the blanket roll 20. It may be applied to an offset printing apparatus of a type that is held in a common moving table that can move along the line.

  Printing in which printing rolls other than the blanket roll 20, such as a plate cylinder and an impression cylinder, are pressed with a required printing pressure applied to a plate, a printing target, and other required pressing objects. As long as it is an apparatus, the present invention may be applied when printing pressure is applied to a printing roll of any type of printing apparatus.

  Each jack 26 may be provided with fins for increasing the surface area, so that heat radiation to the surrounding environment from each jack 26 may be increased.

  The amount of protrusion from the leg member 36 at the other end in the width direction of the horizontal member 37 in each bracket 32 is increased to increase the heat transfer distance from the vertical member 39 to which the drive motor 28 of each jack 26 is attached to each leg member 36. You may make it do. In this case, the output side of each drive motor 28 and the input shaft of the corresponding gear box 29 may be connected via a connecting bar for power transmission.

  Of course, various modifications can be made without departing from the scope of the present invention.

15th edition (object to be pressed)
16 Print target (pressing object)
20 Blanket Roll 22 Support Frame 23 Column 24 Beam Material 25 Roll Holding Frame 26 Jack 27 Screw Shaft 28 Drive Motor 29 Gear Box 30 Nut Member 32 Bracket 36 Leg Member 37 Horizontal Member 38 Through Hole 39 Vertical Member 41 Rib Material

Claims (3)

The roll holding frame that rotatably holds the printing roll placed above the object to be pressed can be moved up and down inside the portal support frame consisting of a beam material that connects the left and right columns and the upper ends of each column. together placed, before SL on the upper side of the beam member of the support frame, a leg member having a certain height disposed in parallel across a gap, the output shaft of the gearbox in the width direction near one end as a horizontal flat plate A horizontal member formed by welding each leg member to the lower surface of a portion close to one end in the width direction, and a drive motor mounting having a lower end welded on the upper side of the other end edge in the width direction of the horizontal member welding rib structure includes a bracket, the drive motor and out thereof attached to said bracket comprising a rib material which is welded together between the vertical members, the upper surface of one side surface and the horizontal member of the vertical member of use A gearbox connected to the side, constitutes a screw shaft having an and upper side extends in the vertical direction is connected to the output side of the front Symbol gearbox, the jack comprising a nut member screwed to the screw shaft, of the jack the pre-Symbol nut member, before Symbol printing pressure applying device for a printing roll, characterized in that it comprises a mounting formed by constituting the roll holding frame. A rib member in the bracket, the printing pressure applying device of a printing roll according to claim 1, wherein the height As the away from the vertical member is decreased shape. 3. A printing pressure applying device for a printing roll according to claim 1, wherein the bracket is made of zirconia ceramics.

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