JPH03189155A - Press plate fixing device - Google Patents

Abstract

PURPOSE:To make it possible to attach a synthetic resin letterpress accurately on a plate cylinder without deforming by a method wherein while one end of a letterpress is fixed by a fixing section, the other end is attached to a plate cylinder while being pulled by a drawing section. CONSTITUTION:After inserting one end 4a of a letterpress 4 between a pressing plate 3b and a fixing plate 5, which are fixed by a pair of wedge members 3c, 3c at a fixing section 7, a base 1 is moved, and the pressing plate 3b is forcibly moved outward from a plate cylinder 6 through the wedge members 3c, 3c by a pair of rollers 2, 2, and the one end 4a of the letterpress 4 is gripped between the pressing plate 3b and the fixing plate 5. Then, the other end 4b of the letterpress 4 is inserted in a fastening groove 13a of a fastening unit 13 at a pulling section 8 and fastened, and an arm 14 is pressed with pressing force F by rotating a screw member, and the arm 14 is rotated together with a drawing roller member 12 around the rotating shaft counterclockwise, and the other end 4b of the letterpress 4 is pulled in such a manner that a part of the other end 4b is wound around the peripheral surface of the drawing roller member 12. By doing this, the letterpress 4 is attached under a condition where it is pulled between the fixing section 7 and drawing section 8.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a printing plate fixing device for accurately attaching a synthetic resin letterpress plate to a plate cylinder, and in particular, it relates to a printing plate fixing device for accurately attaching a synthetic resin letterpress plate to a plate cylinder. Afterwards, this method is not suitable for a thin film forming device that transfers the ink of this synthetic resin letterpress onto a printing substrate.

Conventional Branches Conventionally, in this type of thin film forming apparatus, the means for fixing the synthetic resin letterpress to the plate cylinder was to attach a magnetic sheet (rubber magnet) to the back of the synthetic resin letterpress in advance, and then attach this to the metal plate cylinder. There is one that uses magnetic force to attract it.

Problem to be Solved by the Invention However, with the above structure, there are many errors in the thickness dimension of the magnetic sheet, and it is difficult to manufacture accurately. It is difficult to fix the plate accurately, and when cleaning ink adhering to the plate cylinder with a solvent, the adhesive strength of the adhesive bonding the synthetic resin letterpress plate and the magnetic sheet decreases. There was a problem.

The means for fixing the synthetic resin letterpress to the plate cylinder includes:
It is possible to apply various known fixing grooves, but since the flexibility of synthetic resin letterpress is N-4, it is extremely difficult to fix the letterpress to the plate cylinder without distorting it. There was a problem.

Therefore, an object of the present invention is to solve the problem described in item 1-1, which is to enable a synthetic resin letterpress printing plate to be accurately attached to a printing cylinder without distortion, and to prevent the same problem from occurring when cleaning ink. An object of the present invention is to provide a printing plate fixing device.

4. In order to achieve the objective of ``Means for Solving the Problems'', the present invention provides a fixing part that fixes one end of the synthetic resin letterpress, and a tensioning part that pulls the other end of the synthetic resin letterpress. The plate cylinder was provided with a section and a plate cylinder, so that the synthetic resin letterpress printing plate could be attached to the plate cylinder. In other words,
A printing plate fixing device comprising a synthetic resin letterpress fixing part for fixing one end of the synthetic resin letterpress on the circumferential surface of a plate cylinder, and a synthetic resin letterpress tensioning part for pulling the other end of the synthetic resin letterpress,
The fixing portion includes a drive member that is movable in a predetermined direction with respect to the plate cylinder, and an inclined surface formed on at least one of a contact surface of the drive member that is capable of contacting the drive member. a synthetic resin letterpress pressing member, the other of which is movable in a direction intersecting the predetermined direction by sliding on the inclined surface; fixed and by the movement of the pressing member, one end of the synthetic resin relief plate is held between the pressing member d-
It was constructed so that it was equipped with a fixing plate.

In the above configuration, the driving member is a roller or a cam follower, and the pressing member is configured to be connected to a wedge member having an inclined groove on which the driving member slides.

Further, in the above configuration, the drive member moves the inclined surface (
f4-Roth! In addition, the pressing member described in (1) has an inclined groove that slides on the inclined groove of the foot moving member.
The second wedge member can be configured to have a 4" diameter.

In addition, in the configuration described in -1 U, the driving member is a cutter.
or [l-rough ALJ wara tototsu (go, J-,
The 1+ self-pressing member can be formed into a slanted groove into which the foot moving member is movably fitted, so that the grooving force 12 member is a groove force 12 member.

In addition, in the above-mentioned printing configuration, the pressing part ◆A is a cam or a roller follower, and the driving member has an inclination iM into which the pressing member is movably fitted.
The cam member may be configured to be a slotted cam member.

Further, in the above configuration, the tensioning section has a rotational axis in 1+1 rows with the rotational axis of the plate cylinder, and the tensioning section is rotatable.
- a latch member, a locking part that is fixed to the latch member and locks the other end of the synthetic resin letterpress;
- A tension driving member that rotates the rubber member.

Further, in the above configuration, the tension driving member has an arm fixed to the tension roller member, and is movable with respect to the printing cylinder, has a spherical surface at its tip, and presses the arm with the spherical surface. It can also be configured to include a sling member.

Further, in the above configuration, the locking cylinder of the synthetic resin relief plate of the locking portion may be formed to include a tangent to the circumferential surface of the tension roller member.

Furthermore, in the configuration described in "-", the tension driving member is
It is also possible to configure the apparatus to include an arm fixed to the tension roller member, and a rod-like member having a cam or a cam at its tip and movable relative to the plate cylinder.

Effect of the Invention In the above structure, one end of the synthetic resin relief plate is fixed to the fixing part, while the other end of the relief plate is attached to a predetermined position on the plate cylinder by being pulled by the tensioning part. In the fixing section, after inserting one end of the letterpress between the fixing plate and the pressing member, the driving member moves the pressing member in a direction crossing the predetermined direction to apply the pressing member. One end of the relief plate is held between the member and the fixing plate.

Effects of the Invention According to the above structure, one end of the relief plate is fixed by the fixing part, while the other end of the relief plate is pulled by the tension part to attach the relief plate to the plate cylinder. This eliminates the need for a magnetic sheet whose accuracy is difficult to adjust, improving the accuracy of positioning the letterpress with respect to the plate cylinder. Therefore, the synthetic resin letterpress printing plate can be accurately attached to the printing cylinder without being distorted while the letterpress printing plate is under tension between the fixing part and the tensioning part. Furthermore, since there is no need to make holes for attaching a plate cylinder to the letterpress itself or attach a magnetic sheet to the letterpress, the cost of the letterpress can be reduced. Furthermore, since it is not necessary to attach the magnetic note to the relief plate using an adhesive, there is no problem with attaching the relief plate after cleaning the ink adhering to the plate cylinder with a solvent.

Embodiments of the present invention will be described in detail below with reference to FIGS. 1-10.

As shown in FIG. 1, the printing plate fixing device according to this embodiment transfers the ink held in an intaglio (not shown) to the surface of a synthetic resin relief plate 4, and then
This is used in a thin film forming device that transfers ink onto a printing substrate (not shown). That is, the fixing device includes a synthetic resin letterpress fixing part 7 that fixes one end 4a of the synthetic resin letterpress 4 to the circumferential surface of the plate cylinder 6, and a synthetic resin letterpress fixing part 7 that pulls the other end 4b of the synthetic resin letterpress 4. After fixing one end 4a of the letterpress 4 to the fixing part 7, the other end 4b of the letterpress 4 is pulled by the tensioner 8, thereby tightening the peripheral surface of the plate cylinder 6. It is generally configured so that it can be detachably attached to a predetermined position.

The fixing part 7 is connected to the plate cylinder 6 as shown in FIG. 2.3.
a base l that is movable, for example, in the direction of its rotational axis;
[1-ra2゜2 fixed to the base I, and the roller 2.
2 is in contact with the plate cylinder 6 and intersects with the direction of movement of the base.
a synthetic resin letterpress pressing member 3 that is movable outwardly; and a synthetic resin letterpress pressing member 3 that is fixed to the plate cylinder 6 so as to be located outside the plate cylinder 6 opposite to the pressing member 3, and that moves the pressing member 3 to A fixing plate 5 is provided to clamp one end 4a of the resin relief plate 4 between it and the pressing member 3. The base l and the rollers 2, 2 constitute the driving member.

The base l is driven by a known drive mechanism (not shown) that is part of the drive member. The above [7-ra 2] is fixed to both ends of this J+C stand (2).

The pressing member 3 is arranged opposite to this roller 2.

This pressing member 3 has inclined surfaces 3 on the inside of the plate cylinder 6 in the radial direction.
It consists of a pair of wedge members 3C3c having a shape a formed thereon, and a pressing plate 3b to which the wedge members 3c, 3c are fixed. As the base 1 moves, the roller 2 slides on the inclined surface 3a of each wedge member 3c, as shown by the two-dot chain line in FIG. , and clamps one end 4a of the relief plate 4 between the outer surface of the pressing plate 3b and the inner surface of the fixing plate 5 disposed opposite thereto. The roller 2 may be fixed in a non-rotatable manner relative to the base, but if it is fixed in a rotatable manner, the pressing member 3 can be moved smoothly.

On the other hand, as shown in FIG. 4.5, the tensioning section 8 includes a tension roller member 12 rotatable around a rotational axis 12a parallel to the rotational axis of the plate cylinder 6; It includes a locking part 13 that is fixed to the tension roller member 12 and that locks the other end 4b of the letterpress 4, and a tension drive member that rotates the tension roller member 12. This tension drive member includes an arm 14 fixed to the tension member 12 and a screw member 15.

The above tension roller member! One end of the arm 14 is fixed to one end of the second rotating shaft 12a. The above tension roller member 1
The locking portion 13 is fixed to the circumferential surface of 2. This locking portion 13 is a locking portion IL, iM I 3 a between two plate members.
After inserting the other end 4b of the letterpress 4 into the plate as shown in FIG. 6, the plate member is tightened with bolts (not shown) to lock the other end 4b. As shown in FIG. 7, the screw 15 has a spherical surface 15b at the tip of a threaded rod 15a, and presses the other end of the arm 14 with the spherical surface 15b.

Therefore, by adjusting and screwing the screw member I5 into the bracket 16 fixed to the plate cylinder 6, the spherical surface 15b at the tip of the threaded rod 15a of the screw member 15 can be adjusted.
moves in the axial direction and presses the other end of the arm 14,
The tension roller member 12 is rotated by the arm 14 and the lever, and the relief plate 4 is pulled through the locking portion 13.

According to the above configuration, when attaching the relief plate 4 to the plate cylinder 6, first, one end portion 4a of the letterpress plate 4 is attached to the press plate 3 to which the pair of wedge members 3c, 3c of the fixing portion 7 are fixed.
b and the fixed plate 5, the base l is moved and the wedge member 3 is moved by a pair of rollers 2°2.
c, 3c, the press plate 3b is forcibly moved outward of the plate cylinder 6, and one end 4a of the letterpress plate 4 is held between the press plate 3b and the fixing plate 7. Next, the other end 4b of the letterpress 4 is inserted into the locking groove 1 of the locking portion 13 of the tension portion 8.
After inserting it into 3a, it is locked, and the screw member 15 is rotated to release the screw member! Press the arm 14 with a pressing force F using the spherical surface +5b at the tip of the tension roller member!
2 about the rotation axis in the counterclockwise direction in FIG. As a result, the relief plate 4 is attached in a stretched state between the fixing plate 7 and the tension section 8. When removing the relief plate 4 from the plate cylinder 6, the operation in reverse to the above may be performed. In other words, the arm I tells the screw member 15 to rotate in the opposite direction.
5 and the tension roller member 12 is prevented from rotating in reverse by the elastic restoring force of the letterpress 4, and the other end 4b of the letterpress 4 is released from the locking groove 13a of the locking portion 13. Then, in the fixing section 7, the base 1 is moved in the opposite direction to release the pressing force of the press plate 3b by the rollers 2, 2, and the one end 4a of the letterpress 4 is moved between the press plate 3b and the fixing plate 5. Just pull it out from between. Assuming that the relief plate 4 mentioned above is not transparent, positioning marks are placed on the surfaces of the relief plate 4 and the above-mentioned plate cylinder 6, respectively. preferable.

According to the embodiment, one end 4a of the letterpress plate 4 is moved at the fixing part 7 by moving the stand 2 in a predetermined direction relative to the plate cylinder 6, for example, in the direction of its rotation axis. It is possible to clamp the pressing plate 3b and the fixing plate 5 while tightening them with uniform force.In addition, each wedge member 3c described above can be held between the pressing plate 3b and the fixing plate 5.
By changing the inclination angle of each inclined surface 3a, or by changing the movement m of the base (2), the tightening force of the one end 4a of the letterpress 4 can be adjusted as appropriate. Further, since there is no need to make a hole for mounting a plate cylinder in the letterpress 4 itself or to attach a magnetic sort, the cost of the letterpress 4 can be reduced. Further, since it is not necessary to attach the magnetic notebook with an adhesive, there is no problem with attaching the letterpress plate 4 even if the ink stuck to the plate cylinder 6 is washed with a solvent. Moreover, magnetic sorting, which is difficult to accurately adjust the thickness dimension, is no longer necessary, and the accuracy of the thickness of the relief plate 4 with respect to the plate cylinder 6 is improved. Further, in the tension portion 8, a desired tension force can be applied to the other end portion 4b of the relief plate 4 by adjusting the screwing amount of the screw member 15. Furthermore, since the other end 4b of the letterpress 4 is wrapped around the circumferential surface of the tension roller member 12, it is possible to effectively prevent the letterpress 4 from being bent.

Therefore, according to the fixing device, the fixing part 7
By fixing one end 4a and pulling the other end 4b of the letterpress 4 with the tensioning portion 8, the letterpress 4 can be accurately attached to the plate cylinder 6 without being distorted.

It should be noted that the present invention is not limited to the above embodiments;
It can be implemented in various other ways. For example, the fixing part 7
[2-Ra 2 may be a cylinder or a column, and may also be a cam follower.

Further, as shown in FIG. 8, the driving member 20 of the fixing portion 7 is a first wedge member having an inclined groove 20a, and the pressing member 21 slides on the inclined surface 20a of the driving member 20. Slope 2! When the drive member 20 is moved by the base I, the sliding of the inclined surfaces 20a and 21a causes the pressing member 2! may be moved outward of the plate cylinder 6.

Further, as shown in FIG. 9, when one of the driving member and the pressing member is a cam or a roller follower 22, the other of the driving member and the pressing member is the The follower 22 may be configured as a groove cam member 23 having an inclined groove 23a into which the follower 22 is movably fitted. In addition, the driving member 1.2
The driving direction does not necessarily have to be perpendicular to the moving direction of the pressing member 3; in short, it may be in any direction as long as the pressing member 3 can be driven in a direction that intersects with the driving direction. Furthermore, the locking groove of the relief plate 4 of the locking portion 13 in the tension portion 8! The locking groove 3a may be formed to include a tangent to the circumferential surface of the tension roller member 12. Also, instead of the screw material 15, a first
As shown in FIG. 0, it may be configured as a rod-like member 24 having a cam or roller follower 24a at its tip and movable in the axial direction with respect to the plate cylinder 6.

[Brief explanation of drawings]

FIG. 1 is a side view of a plate cylinder having a printing plate fixing device according to an embodiment of the present invention, FIGS. , 7 are respectively a front view, a side view, an enlarged side view of the essential parts, and a side view showing the relationship between the tension drive member and the tension roller member of the tensioning part of the fixing device, and Figures 8 and 9 are respectively the front view, side view, and enlarged side view of the tensioning part of the fixing device. FIG. 1O is a front view of a main part showing various modifications, and FIG. 1O is a side view showing a modification of the tension section. l...Base, 2...Roller, 3...Press member, 3
a... Inclined surface, 3b... Pressing plate, 3c... Wedge member, 4... Synthetic resin letterpress, 4a... One end, 4b
...Other end, 5...Fixing plate, 6...Print cylinder, 7...
- Fixed part, 8... Issue 1 tension part, 12... Tension roller member, 13... Locking part, +3a... Locking groove, 14...
Arm, 15...screw member, 16...bracket,
20... First wedge member, 21... Second wedge member, 22... Follower, 23... Groove cam member.

Claims (9)

[Claims] (1) A synthetic resin letterpress fixing part (7) for fixing one end (4a) of the synthetic resin letterpress (4) to the circumferential surface of the plate cylinder (6), and the other end (4) of the synthetic resin letterpress (4). The printing plate fixing device includes a synthetic resin letterpress tensioning part (8) that pulls the plate cylinder (6), and the fixing part (7) is configured to include a driving member (1) movable in a predetermined direction with respect to the plate cylinder (6). , 2, 20, 22, 23), a surface that can come into contact with the driving member (1, 2, 20, 22, 23), and a contacted surface of the driving member (1, 2, 20, 22, 23). An inclined surface (3a, 2
0a, 21a, 23a), the other of which is movable in a direction intersecting the predetermined direction by sliding on the inclined surface (3a, 20a, 21a, 23a). 21, 22, 23) and the press member (3, 21, 22, 23) fixed to the plate cylinder (6) facing the outside of the plate cylinder (6) and the press member (3, 21, 22, 23). , 21, 22, 23), one end (4a) of the synthetic resin letterpress (4) is pressed against the pressing member (3, 2).
1, 22, 23). (2) The driving members (1, 2, 20, 22, 23) are rollers or cam followers (1, 2), and the pressing member (3) is a slope on which the driving members (1, 2) slide. 2. A printing plate fixing device according to claim 1, which is a wedge member (3c) having a surface (3a). (3) The driving member (1, 2, 20, 22, 23) is a first wedge member (20) having an inclined surface (20a), and the pressing member (3, 21, 22, 23) is a first wedge member (20) having an inclined surface (20a). The printing plate fixing device according to claim 1, which is a second wedge member (21) having an inclined surface (21a) that slides on the inclined surface (20a) of the drive member (20). (4) The driving member (1, 2, 20, 22, 23) is a cam or roller follower (22), and the pressing member (3, 21, 22, 23) is the driving member (
2. The printing plate fixing device according to claim 1, wherein the plate fixing device (22) is a groove cam member (23) having an inclined groove (23a) into which the member (22) is movably fitted. (5) The pressing member (3, 21, 22, 23) is a cam or a roller follower (22), and the driving member (1, 2, 20, 22, 23) is the pressing member (
2. The printing plate fixing device according to claim 1, wherein the plate fixing device (22) is a groove cam member (23) having an inclined groove (23a) into which the member (22) is movably fitted. (6) The tensioning portion (8) includes a tensioning roller member (12) rotatable with a rotational axis (12a) parallel to the rotational axis of the plate cylinder (6), and the tensioning roller member (12). a locking part (13) that is fixed to and locks the other end (4b) of the synthetic resin letterpress (4), and a tension drive member (14, 15, 24) that rotates the tension roller member (12). The printing plate fixing device according to any one of claims 1 to 5, comprising: (7) The tension drive member (14, 15, 24) is movable with respect to the arm (14) fixed to the tension roller member (12) and the plate cylinder (6), and has a spherical surface (
7. The printing plate fixing device according to claim 6, further comprising a screw member (15) having a spherical surface (15b) and pressing the arm (14) with the spherical surface (15b). (8) The locking surface of the synthetic resin relief plate (4) of the locking portion (13) is formed to include a tangent to the circumferential surface of the tension roller member (12). Printing plate fixing device. (9) The tension drive member (14, 15, 24) has an arm (14) fixed to the tension roller member (12), a cam or roller follower (24a) at the tip, and the plate cylinder ( A rod-shaped member (24) movable relative to
) The printing plate fixing device according to claim 6 or 8, comprising: