JPS644521Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] The present invention relates to a multi-color printing proofing machine, and relates to a structure that allows continuous proofing of color printing for newspapers and commercial printing on paper attached to an impression cylinder. .

[Technical background of the invention and its problems]

In a conventional proofing machine of this kind, for example, a flat printing plate and a paper loading table are arranged alternately, an ink roller applies ink to the printing plate, a blanket cylinder is moved over the printing plate, and the blanket cylinder is is applied with ink and printed by rolling it onto the paper loaded on the paper loading table, then this paper is loaded on the next paper loading table, and then an ink roller prints it on the next printing plate in a different color from the previous one. A configuration is employed in which the printing plate is coated with ink, a blanket cylinder is moved onto the printing plate to deposit the ink, and the operations of printing on paper with the blanket cylinder are repeated to successively print in different colors. With this configuration, each time printing of one color is completed, the paper must be loaded onto the next paper loading table, which makes the operation complicated, requires a long time to print multicolor proofs, and also increases the size of the machine. It has the disadvantage of requiring a large installation space.

[Purpose of invention]

The present invention was developed in view of the above-mentioned drawbacks, and it is possible to print different colors continuously with paper attached to one impression cylinder, is easy to operate, can print multicolor proofs in a short time, and is To provide a multi-color printing proofing machine that can be made small and suitable for proofing multi-color printing such as newspapers and commercial printing.

[Overview of the idea]

The present invention includes an impression cylinder that is supported movably in the axial direction on a rotating shaft and coupled to the rotating shaft at a plurality of set positions spaced apart in the axial direction; It is characterized by comprising a plurality of pairs of plate cylinders each disposed at a sandwiching position and corresponding to the impression cylinder at a set position, the plate cylinder at a position where the impression cylinder is sandwiched between the paper attached to the impression cylinder. Alternatively, the blanket cylinders are pressed against each other to print different colors, and then the impression cylinder is moved axially with the paper still attached, moved to the position of the next plate cylinder or blanket cylinder, and connected to the rotating shaft. Then, at this position, the printing cylinder or blanket cylinder placed between the impression cylinders is again brought into pressure contact for printing.

[Example of idea]

Next, the structure of an embodiment of the present invention will be explained with reference to FIGS. 1 to 3.

Reference numeral 1 denotes a fuselage body, in which a rotating shaft 4 is pivotally supported at the upper center of both end plates 2 and 3. An impression cylinder 5 is supported on the rotating shaft 4 so as to be slidable in the axial direction. This impression cylinder 5
A holding piece 7 is provided on the outer circumferential surface of the paper 6 for clamping one end of the paper 6, and a support shaft 8 protruding from the inner side of this holding piece 7 is supported by a spring 9 to hold the holding piece 7 tightly against the outer circumferential surface of the impression cylinder 5. The support shaft 8 is energized in the direction of the impression cylinder 5.
A cam 1 rotated by an operating knob 10 provided on the
1 is used to advance or retreat. Then, the support shaft 8 is pushed by the cam 11 so that the holding piece 7 floats above the outer circumferential surface of the impression cylinder 5, and one end of the paper 6 is inserted between the holding piece 7 and the outer circumferential surface of the impression cylinder 5, and the operation is performed. Pick 10
As a result, the pressure on the support shaft 8 by the cam 11 is released, and the spring 9 brings the holding piece 7 into close contact with the outer peripheral surface of the impression cylinder 5, thereby clamping and holding one end of the paper 6. Further, a locking needle 12 for locking the other end of the paper 6 is provided protruding from the outer peripheral surface of the impression cylinder 5.

Further, a radial insertion hole 13 is opened at the small diameter end of the impression cylinder 5, and a stator 14 is inserted into this insertion hole 13.
is inserted through the stator 14 so as to be freely forward and backward, and a triangular engagement portion 16 is formed at the tip of the stator 14 to engage with an engagement groove 15 having a concave triangular cross section formed in the axial direction on the outer periphery of the rotating shaft 4. ing. Further, a screw shaft portion 17 protruding from the stator 14 is screwed into a screw hole 19 of a fixing plate 18 fixed to the opening of the insertion hole 13, and an operating knob 20 is provided at the outer end of the screw shaft portion 17. ,
By rotating the operation knob 20, the engagement between the stator 14 and the engagement groove 15 is loosened, and in this state, the impression cylinder 5 is moved in the axial direction, and at the set position, the screw shaft is moved by the operation knob 18. When 17 is rotated, the stator 14 is adhered to the engagement groove 15 and the impression cylinder 5 is fixed to the rotating shaft 4.

Next, 21, 21, 21, 21 are plate cylinders, and the first and second plate cylinders 21, 21 are located on both left and right sides of one end of the rotating shaft 4, and the third and fourth plate cylinders are located on both sides of one end of the rotating shaft 4. The plate cylinders 21, 21 are disposed on both left and right sides of the other end of the rotating shaft 4.

The rotation shafts 22 of the first and third plate cylinders 21, 21 and the rotation shafts 22 of the second and fourth plate cylinders 21, 21 are connected to both end plates 2, 3 of the body 1 and the intermediate wall 23.
It is rotatably supported by a bearing 24 which is provided to be able to move up and down. These plate cylinders 21, 21, 21, 2
A saddle 26 to which a printing plate 25 is removably attached is provided on the outer periphery of each plate.

Next, 27, 27, 27, 27 are the plate cylinders 21,
An inking roller that adheres ink to the printing plates 25 of 21, 21, 21, each of the plate cylinders 21, 21, 2
Both end plates 2 and 3 of the fuselage 1 and the intermediate wall 2
3 and is rotatably supported.

Next, reference numerals 29, 29, 29, 29 are swinging rollers that are brought into contact with the pair of inking rollers 27, 27, 27, 27, respectively, and are axially connected to both end plates 2, 3 of the machine body 1 and the intermediate wall 23. It is mounted so as to be movable in the axial direction and connected to the rotating shaft 30 supported in the rotating direction.

Further, 31, 31, 31, 31 is a rotating shaft 32 located outside each of the above-mentioned shaking rollers 29, 29, 29, 29 and supported between both end plates 2, 3 of the machine body 1 and the intermediate wall 23. This is the kneading roller installed in the kneading roller.

Next, 33, 33 is a roughly L-shaped cam floor,
The cam floors 33, 33 are rotatably supported eccentrically on support shafts 34 on both sides of the end plates 2, 3 and the intermediate wall 23 of the fuselage 1, and push-up rods 35, 35 are provided at one end of the outer end of the cam floors 33, 33. The tips of the push-up rods 35, 35 are connected to the plate cylinders 21, 2, respectively.
1, 21, 21 rotation shaft 22, 22, 22, 22
The two ends of the cam floor 33 are engaged with respective bearings 24, and the other ends of the cam floors 33, 33 are each pivotally supported with a roller 37 that engages with a cam portion 36.

Next, the drive mechanism will be explained.

A belt 41 is suspended around a pulley 39 interlocked with an electric motor 38 provided at the bottom of the machine body 1 and a pulley 40 provided at one end of the rotating shaft 4 of the impression cylinder 5. Gears 42, 42 are provided at both ends of this rotating shaft 4, and these gears 42, 42 are connected to the plate cylinders 21, 21, 21,
They are meshed with gears 43 provided on the rotating shafts 22, 22, 22, 22 of 21, respectively.

Further, gears 45, 45 meshing with gears 44, 44 provided at both ends of the rotating shaft 4 of the impression cylinder 5, respectively.
are pivotally supported by the end plates 2 and 3 of the fuselage 1, respectively, and rotate together with the gears 45 and 45.
The cam gears 47, 47 meshing with the end plates 2, 3
The cam gears 47, 47 are
The rollers 37 of the cam floors 33, 33 are engaged with the cam portions 36 of the cam floors 33, 33, respectively.

Next, electric motors 48, 48, installed at the bottom of the fuselage 1,
Pulley 4 rotated by 48, 48, respectively
9, 49 and pulleys 50, 5 pivotally supported on the end plates 2, 3
A gear 5 has drive belts 51, 51 suspended on the pulleys 50, 50, and rotates integrally with the pulleys 50, 50, respectively.
2, 52, the transfer roller 29, 29, 29, 2
The gears 53, 53 provided on the rotating shaft 30 of the gear reducer 54 are engaged with each other, and the gear 55 of the input shaft of the reducer 54 is engaged with the gears 53, 53, respectively, and the cam 56 of the output shaft of the reducer 54 is engaged with the gears 53, 53, respectively. gold roller 29,
29, 29, 29, and the rotation of this cam 56 causes each shaking roller 29 to reciprocate in the axial direction.

Each pair of inking rollers 27, 27, 2
The rotating shafts 28 of 7 and 27 are provided so as to be movable in the horizontal direction with bearings 57 and 57.
In this case, the inking rollers 27, 27, 27, 27 approach each other by the springs 58, 58, and the plate cylinder 2
1 is energized in the direction of contact. This bearing 57 is connected to a cam portion 6 rotated by a handle 59.
0, each inking roller 27, 27, 27, 27 is moved away from each other at plate cylinder 21, 2.
1, 21, and 21.
Further, the rack body 62 that meshes with a gear 61 rotated by each handle 59 is engaged with a gear portion 63 centered on the support shaft 34 of each cam floor 33, and
9, the push-up rod 35 pivotally connected to the cam floor 33 is lowered, and the plate cylinder 21 is separated from the impression cylinder 5.

Next, 64 is a paper feeding device for loading paper onto the impression cylinder 5, and a rotating arm 65 provided at the top of the machine body 1 is provided with a roller 66 for feeding the paper 6 along the outer peripheral surface of the impression cylinder 5. It is being

Reference numerals 67 and 67 are paper press rolls that hold the paper 6 mounted on the impression cylinder 5, and the both end plates 2 of the machine body 1,
3 and an intermediate wall 23 so as to be rotatable.

Next, the operation of this embodiment will be explained.

First, yellow, red, indigo, and black inks are applied to the kneading rollers 31, 31, 31, 31, respectively.

Each shaking roller 29 is rotated by the drive of the electric motor 48, and the ink adhering to the kneading roller 31 is adhered to the shaking roller 29, and since the shaking roller 29 is reciprocated in the axial direction by a cam 56, the ink is is evenly attached to the outer peripheral surface of each shaking roller 29, 29, 29, 29. And each transfer roller 2
The ink adhering to 9, 29, 29, 29 is adhering to inking rollers 27, 27, 27, 27,
Ink is applied to the printing plate 25 of each plate cylinder 21, 21, 21, 21. At this time, the impression cylinder 5 is being rotated by the drive of the electric motor 38, but the gear 43 of the rotation shaft 22 of each plate cylinder 21, 21, 21, 21 is in shallow mesh with the gear 42 of the rotation shaft 4 of the impression cylinder 5. Therefore, the printing plate 25 of each plate cylinder 21, 21, 21, 21 does not come into contact with the paper 6 of the impression cylinder 5.

A cam gear 47 is rotated by gear meshing with the drive of the electric motor 38.
When the first cam floor 33 is rotated by the cam part 36 and the push-up rod 35 pushes up the bearing 24,
The gear 43 of the rotation shaft 4 of the first plate cylinder 21 is connected to the impression cylinder 5.
meshes with the gear 42 of the rotating shaft 4 of the first plate cylinder 21.
The printing plate 25 contacts the impression cylinder 5, and black printing is performed on the paper 6 of the impression cylinder 5. Next, as the cam gear 47 rotates, the cam floor 33 is released from the pressure of the roller 37 by the cam portion 36, the bearing 24 is lowered, and the first plate cylinder 21 is separated from the impression cylinder 5. Then, the cam portion 36 of the cam gear 47 presses the roller 37 of the second cam floor 33, and the rotation shaft 22 of the second plate cylinder 21
The bearing 24 of the rotating shaft 22 rises, and the gear 43 of this rotating shaft 22
is deeply meshed with the gear 42 of the rotation shaft 4 of the impression cylinder 5, the printing plate 25 of the second printing cylinder 21 comes into contact with the impression cylinder 5, and an indigo color is printed on the paper 6, overlapping the previous black printing. Printing is done.

Next, each drive mechanism is stopped, the impression cylinder 5 is moved from the first set position to the next set position along the rotation axis 4, and the second plate cylinder 5 is moved between the third and fourth plate cylinders 21 and 21.
It is fixed to the rotating shaft 22 at the set position. Next, in the same manner as described above, the electric motors 38 and 48 are driven to print red on the third printing cylinder 21, and then the fourth printing cylinder
Yellow printing is performed using the plate cylinder 21, and four-color proof printing is performed.

When replacing the printing plate 25, the inking rollers 27, 27 are moved away from the plate cylinder 21 by operating the handle 59, and the cam floor 33 is actuated via the rack body 62 to separate the plate cylinder 21 from the impression cylinder 5. .

Next, another embodiment will be described with reference to FIG. In the embodiment described above, the plate cylinders 21, 21 are connected to the rotation shaft 2 of the impression cylinder 5.
However, in this embodiment, the plate cylinders 21, 21 are arranged above and below the rotating shaft 4 of the impression cylinder 5.

The impression cylinder 5 is provided movably along the rotating shaft 4 and is connected to the rotating shaft 4 at a plurality of set positions. Blanket cylinders 68, 68 are arranged above and below the plurality of set positions of the rotating shaft 4, respectively, and are in contact with the impression cylinder 5. Blanket torso 68, 6 to torso 5
It is supported so as to be moved toward and away from 8. Further, plate cylinders 21, 21 are rotatably provided on the rear upper part of the blanket cylinders 68, 68, respectively, to which printing plates are attached and moved toward and away from each other.

and a pulley 3 rotated by an electric motor 38
9 and a pulley 40 provided on the rotation shaft 4 of the impression cylinder 5, and a gear 42 provided on the rotation shaft 4 and each rotation shaft 69 of the blanket cylinders 68, 68.
The gears 70 provided in the gears are meshed with each other.
and a gear 4 provided on the rotating shaft 22 of each plate cylinder 21, 21.
3 are engaged with each other, and the blanket cylinders 68,
A lever (not shown) for moving the blanket cylinders 68, 68 is engaged with a cam portion (not shown) of each cam gear 47 which is interlocked with the rotating shafts 69, 68 of the blanket cylinder 68 through gear meshing.

In addition, drive belts 5 are attached to the electric motors 48 and 48, respectively.
A gear 53 provided on the rotating shaft 30 of the shaking rollers 29, 29 is meshed with a gear 52 which is rotated through the interlocking mechanism 1, and each pair of inking rollers 27, 27 are brought into contact with the shaking rollers 29, 29. The plate cylinder 21
contact with.

In this embodiment, the impression cylinder 5 is placed at the first position of the rotating shaft 4.
The electric motor 3 is fixed to the rotating shaft 4 at the set position.
When 8, 48, 48 are driven, the impression cylinder 5 is rotated, and the blanket cylinders 68, 68 are also rotated by the gears 70, 70 which are shallowly meshed with the gear 42 of the rotation shaft 4 of the impression cylinder 5. The plate cylinders 21 and 2 rotate through gear meshing.
1 and the cam gears 47, 47 are rotated.

Further, the shaking rollers 29, 29 are also rotated while being reciprocated in the axial direction as in the previous embodiment, and the ink adhering to the kneading rollers 31, 31 is adhered to the outer peripheral surface, and the ink adhering to the shaking rollers 29, 29 is is attached to the inking rollers 27, 27, respectively, and the ink is applied to the printing plates of the plate cylinders 21, 21, respectively.

The ink adhering to the printing plates of the plate cylinders 21, 21 is applied to the blanket cylinders 68, 68, respectively.

When the lever is actuated by the rotation of the cam gear 47, the first blanket cylinder 68 moves toward the impression cylinder 5, and the ink applied to the first blanket cylinder 68 is applied to the paper 6 mounted on the impression cylinder 5. printed.
At this time, the gear 42 of the rotation shaft 4 of the impression cylinder 5 and the gear 70 of the rotation shaft 69 of the blanket cylinder 68 are deeply meshed, and the rotation shaft 69 of the blanket cylinder 68 is
The gear 70 is shallowly meshed with the gear mechanism of the gear 43 of the rotating shaft 22 of the plate cylinder 21 and the cam gear 47, and the plate cylinder 21 and the cam gear 47 continue to rotate.

Then, as the cam gear 47 rotates, the lever operates the first
When the blanket cylinder 68 of is separated from the impression cylinder 5,
Subsequently, the second blanket cylinder 68 is likewise brought into contact with the impression cylinder 5 by means of the cam gear 47, and printing in the second color is effected.

When two-color printing is completed in this way, the electric motors 38, 48, 48 are stopped, the impression cylinder 5 is moved along the rotation axis 4, and fixed from the first setting position to the second setting position, Similarly, third and fourth printings are performed by the third and fourth blanket cylinders 68,68.

In the structure of this embodiment, the blanket cylinders 68, 68 are arranged above and below the impression cylinder 5, so that the internal mechanism can be inspected easily.

Further, in this embodiment, the impression cylinder 5 is provided with a blanket cylinder 6.
Although the plate cylinders 8 and 68 are moved toward and away from each other, the plate cylinders 21,
Direct printing may be performed at 21, in which case the plate cylinders 21, 21 are brought into contact with and separated from the impression cylinder 5.

Also in the structure of the embodiment shown in FIGS. 1 to 3, a blanket cylinder can be disposed between the impression cylinder 5 and the plate cylinders 21, 21, 21, 21.

Further, in each of the embodiments described above, the pair of plate cylinders 21, 21, 21, 21 or the blanket cylinders 68, 68, 68, 68 are arranged at the first and second setting positions along the rotation axis 4 of the impression cylinder 5. Furthermore, by extending the rotation shaft 4, it is possible to print in 6 or 8 colors.

Further, the printing order is not limited to black, indigo, magenta, and yellow, but may be in any appropriate order, such as yellow, magenta, indigo, black, or red, yellow, blue, and black.

Furthermore, the saddle 26 may not be used on the plate cylinder 21, and the plate cylinder may be directly attached to the plate cylinder 21 in a removable manner.

[Effect of idea]

According to the present invention, it is possible to continuously perform multi-color proofing or single-color printing while the paper is attached once to the impression cylinder, and there is no need to attach paper for each color, making multi-color proofing efficient and efficient. It can be completed in a short period of time, can perform two-color printing using the same impression cylinder, and the entire machine can be made smaller and its installation area can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of a multi-color printing proofing machine showing an embodiment of the present invention, Fig. 2 is a partially cutaway side view of the same, Fig. 3 is a partially cutaway side view of the same; FIG. 4 is a side view showing another embodiment. 4... Rotating shaft, 5... Impression cylinder, 21... Print cylinder, 6
8... Blanket body.

Claims (1)

[Claims for Utility Model Registration] (1) An impression cylinder supported movably in the axial direction on a rotating shaft and coupled to the rotating shaft at a plurality of set positions spaced apart in the axial direction, and a plurality of the impression cylinders. A multi-color printing proofing machine comprising: a plurality of pairs of plate cylinders respectively disposed at positions sandwiching the rotation axis and corresponding to the impression cylinders at the set positions. (2) The multi-color printing proofing machine according to claim 1, wherein the printing cylinder is pressed against the impression cylinder. (3) The multi-color printing proofing machine according to claim 1, wherein the printing cylinder is pressed against the impression cylinder via a blanket cylinder.