JPH07285214A - Method and apparatus for mounting blanket - Google Patents

Abstract

PURPOSE:To simply mount a blanket, shorten the mounting time, decrease the paper loss rate, decrease the man-hour and simply and easily perform the inserting work to the holding side of the blanket. CONSTITUTION:As the holding side 21a of a blanket 21 and a belt sheet 23a inserted from a gap 4 are brought into contact with the holding side part 22 of a blanket trunk 1 and the outer peripheral face of a tension bar 6, even when the blanket 21 is pulled in the tangent direction of the outer peripheral face of the blanket trunk 1, there exists no possibility of coming out of the blanket 21 from the gap 4 and the blanket trunk 1 is rotated about by one rotation while the blanket is pulled from this condition to wind up the blanket on the outer peripheral face of the blanket trunk 1. After it is wound up, the holding bottom side 21b of the blanket 21 is inserted into a cut channel 8 of the tension bar 6 and the tension bar is rotated to the clamping side and the holding bottom side 21b of the blanket 21 is pulled in the pulling direction and the blanket is tightly mounted on the blanket trunk 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blanket mounting method and apparatus applied to a blanket cylinder.

[0002]

2. Description of the Related Art A conventional blanket mounting device will be described with reference to FIGS. 2 and 3. Reference numeral 1 is a blanket cylinder, and the blanket cylinder 1 has a grip side portion 2 and a grip bottom side portion 3, and an axis between them. A gap 4 for inserting the blanket 11 and a tension bar hole 5 for inserting the tension bar 6 are provided in the direction.

A notch groove 7 is axially provided in the gap 4 on the gripping side portion 2 of the blanket cylinder 1, and a notch groove 8 is axially provided in the tension bar 6. The tension bar 6 is a blanket. Bearer 1a provided on the body 1,
It is rotatably supported by 1b. A winding mechanism 9 for rotating the tension bar 6 between a loosening position and a tightening position is attached to both ends of the tension bar 6. The winding mechanism 9 is composed of a worm and a worm wheel, but there is also a mechanism including a lever for rotating the tension bar 6 and a latch mechanism.

On the other hand, the holding side 11a of the blanket 11
Thick strip steel 1 attached to the blanket 11 so as to wrap around the end of the blanket 11 on the grip end side 11b.
There are 2a and 12b. 2 (a) (b) (c)
The procedure for mounting the blanket 11 on the blanket cylinder 1 is shown. (1) As shown in FIG. 2 (a), the holding side 11 a of the blanket 11 is inserted into the tension bar hole 5 through the gap 4 and the thick strip steel 12 a is hooked in the notch groove 7. Next, the blanket cylinder 1 is rotated about one turn in the direction of the arrow, and the blanket 11 is wound around the blanket cylinder 1 while being pulled. (2) Then, as shown in FIG. 2B, the blanket cylinder 1
When the gap 4 comes to the insertion position of the gripper side 11b of the blanket 11 after about one rotation, the notch groove 8 of the tension bar 6 has already faced the direction of the gap 4,
[Because the blanket 11 has been rotated to the loosening position when the blanket 11 is removed], the gripper side 11 b is inserted into the notch groove 8 from the gap 4. (3) As shown in FIG. 2 (c), the tension bar 6 is rotated in the direction of the tightening position by the winding mechanism 9, and the grip edge side 11 b of the blanket 11 is pulled in the pulling direction to pull the blanket 11 into the blanket cylinder 1. Attach firmly to.

When the blanket 11 is removed, it may be carried out in the reverse order of the above mounting. When the tension bar 6 is turned to the slack position, the notch groove 8 faces the direction of the gap 4 as in the item (2), so that the gripper side 11a can be easily pulled out.

[0006]

The conventional blanket mounting device shown in FIGS. 2 and 3 has the following problems.
(1) Since the diameter of the tension bar hole 5 into which the tension bar 6 is inserted is small and is long in the axial direction, it is difficult to machine the notch groove 7 on the grip side 2 of the blanket cylinder 1 and Time will increase. (2) Steel strip 12a on the gripping side 11a of the blanket 11
Hooking the notch groove 7 is also because the width of the gap 4 is narrow,
It is difficult and requires a lot of time to hook. (3) Since the thick steel strips 12a and 12b are mounted on the blanket 11, the thickness of the gripper side 11a and the gripper side 11b of the blanket 11 becomes thicker, and the gap 4 for inserting the blanket 11 must be widened. When 4 is widened, there is a problem that the non-printing area (width of the non-printed portion in the circumferential direction) becomes wide and the loss of paper rate increases.

The present invention is proposed in view of the above problems, and an object thereof is to easily mount a blanket, shorten the mounting time, and reduce the loss of paper.
An object of the present invention is to provide a blanket mounting method and device that can reduce the number of steps and can easily and easily insert the blanket into the gripping side.

[0008]

In order to achieve the above object, the blanket mounting method of the present invention is such that the gripping side of the blanket having the strips fixed to the gripping side and the gripping buttocks side of the blanket cylinder, respectively. Attaching the blanket to the blanket cylinder by inserting it without restraint between the gripper side and the single tension bar provided on the blanket cylinder, and winding the bottom edge of the blanket with the single tension bar. Is characterized by.

Further, the blanket mounting device of the present invention is such that a blanket having a strip plate fixed to each of the grip side and the grip tail side, a hole for a tension bar provided along the axial direction in the blanket cylinder, and a shaft on the blanket cylinder. Has a hole for opening the same tension bar hole on the surface of the blanket cylinder, and a single tension bar inserted in the hole for the tension bar, and the gripper side of the gap is the hole for the tension bar. Formed in a plane that is continuously connected, the length of the grip side strip of the blanket is set to a length that allows contact with the tension bar from the body surface, and the length of the grip side strip of the blanket is provided in the tension bar. The feature is that it has a length that can be inserted into the notch groove.

In the blanket mounting device, the thickness of the strips fixed to the gripper side and the gripper end side of the blanket may be reduced.

[0011]

The present invention is configured as described above, and since the gripper side of the blanket inserted from the gap contacts the gripper side of the blanket cylinder and the outer peripheral surface of the tension bar, the blanket is attached to the outer peripheral surface of the blanket cylinder. The blanket does not come out of the gap when pulled tangentially. From this state, while pulling the blanket, the blanket cylinder is rotated about once and wound around the outer peripheral surface of the blanket cylinder. After winding, the gripper end side of the blanket is inserted into the notch groove of the tension bar through the gap, the tension bar is turned to the tightening side, and the gripper end side of the blanket is pulled in the pull-in direction. It is firmly attached to the body. Further, since thin strip steel is attached to the gripper side and the gripper end side of the blanket, the thickness of the gripper end side including the thickness of the blanket becomes thinner than the conventional one, and the gap width becomes narrower. Also, since the steel strips are attached to the gripper side and the gripper side of the blanket, the rigidity and weight of the gripper side and the gripper side increase, and when inserted, they hang down in the direction of gravity and are easily inserted. After the gripper side of the blanket comes into contact with the gripper side of the blanket cylinder and the outer peripheral surface of the tension bar, the gripper side of the blanket does not easily bend.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an example of the construction of a blanket mounting device applied to the implementation of the blanket mounting method of the present invention will be described with reference to FIG. The blanket mounting device of the present invention shown in FIG. 1 differs from the conventional blanket mounting device shown in FIG. 2 in that the cutout groove 7 is not provided in the grip side portion 22 of the blanket cylinder of FIG.

In the blanket mounting apparatus of the present invention shown in FIG. 1, thin steel strips 23 are attached to the blanket 21 on the gripping side 21a and the gripping side 21b instead of the thick strip steel 12 as shown in FIG. ing. The thickness of the blanket 21 in FIG. 1 is the same as the thickness of the blanket 11 in FIG. Also, a single tension bar 6 is used, which is inserted into the tension bar hole 5 in the blanket cylinder 1 as in FIG. 3 and is rotated by the winding mechanism 9 between the loosening position and the tightening position. The movement is the same as in the case of FIG. In FIG. 1, the same members are used for the same members as those in FIGS. 2 and 3.

Next, the procedure for mounting the blanket 21 on the blanket cylinder 1 in the blanket mounting device shown in FIG. 1 will be described with reference to FIGS. 1A, 1B and 1C. (1) The holding side 21a of the blanket 21 is Gap 4
The thin strip 23a is entirely inserted into the gap 4 and comes into contact with the grip side portion 22 of the blanket cylinder 1 and the outer peripheral surface of the tension bar 6. Next, while the blanket cylinder 1 makes one revolution in the direction of the arrow, the blanket 21
Is wound around the blanket cylinder 1 while being pulled. At this time, the upper end of the thin strip steel 23a is held by the grip side portion
Even when the blanket 21 is pulled in the tangential direction of the outer peripheral surface of the blanket cylinder 1, the upper end P of the blanket 21 hits the outer peripheral surface Q of the tension bar 6 and the blanket 21 is pulled out in the tangential direction. (2) When the grip edge side 21b of the blanket 21 reaches the insertion position into the gap 4 as shown in FIG. 1 (b) after making about one rotation as described above, the notch groove 8 of the tension bar 6 has already moved to the gap 4 Since it is oriented in the direction [(rotating position when the front blanket 11 is removed (releasing position)], the gripper side 21b of the blanket 21 is inserted into the notch groove 8 from the gap 4. (3) As shown in FIG. 1 (c), the winding mechanism 9 rotates the tension bar 6 toward the tightening position of the blanket 21, and the gripper side 21b of the blanket 21 is pulled in the pulling direction, so that the blanket 21 is pulled. 21 is firmly attached to the blanket cylinder 1.

When the blanket 21 is removed, it may be carried out in the reverse order of the above-mentioned mounting. When the tension bar 6 is turned to the slack position, the notch groove 8 faces the direction of the gap 4 as in the item (2), so that the gripper side 11a can be easily pulled out. The holding side 21a of the blanket 21 is
You can pull it out without any resistance by pulling it upwards, which is close to the radial direction.

[0016]

As described above, according to the present invention, after inserting the gripping side of the blanket having the band steel attached to each of the gripping side and the gripping side into the gap, the gripping side is simply wound by the single tension bar. Since the blanket can be firmly attached to the blanket cylinder, the blanket can be easily attached and the attachment time can be shortened.

Further, when the tension bar is loosened, the holding side of the blanket is also loosened so that the blanket can be pulled out, so that the blanket can be removed in the same rotation direction as when it is mounted. Also, since the thin strip steel is attached to the blanket, the gap width can be narrowed compared to the case where the blanket with the conventional thick strip steel is used, the non-printing area can be reduced, and the waste paper The rate can be reduced.

Further, since it is not necessary to form a notch in the gripper side of the blanket cylinder, the number of steps can be reduced. Further, the work of hooking the thick steel strip on the gripping side to the notch can be dispensed with, and it suffices to insert it, and the blanket can be easily and easily inserted into the gripping side.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view showing an example of the configuration of a blanket mounting device applied to the implementation of the blanket mounting method of the present invention.

FIG. 2 is a vertical sectional side view showing a conventional blanket mounting device.

FIG. 3 is a front view of the blanket mounting device.

[Explanation of symbols]

 1 blanket cylinder 3 gripper side of blanket cylinder 1 4 gap 5 hole for tension bar 6 single tension bar 8 notch groove of single tension bar 6 21 blanket 21a blanket 21 grip side 21b blanket 21 grip bottom side 22 blanket Holding part of the body 1 23a Strip steel 23b 〃

Claims (3)

[Claims] 1. The gripping side of a blanket having strips fixed to the gripping side and the gripping tail side is not restricted between the gripping side of the blanket cylinder and a single tension bar provided on the blanket cylinder. A blanket mounting method characterized in that the blanket is mounted on the blanket cylinder by inserting and winding the gripper side of the blanket with the single tension bar. 2. A blanket having band plates fixed to the gripping side and the gripping end side, a tension bar hole axially provided in the blanket cylinder, and a tension bar axially provided in the blanket cylinder. A hole for opening a hole for blanket on the surface of the blanket cylinder, and a single tension bar inserted in the hole for the tension bar, and a holding side of the gap is formed into a plane continuously connecting to the hole for the tension bar. The length of the grip side strip of the blanket is set to a length that allows contact with the tension bar from the body surface, and the length of the grip side strip of the blanket is a length that can be inserted into the notch groove provided in the tension bar. A blanket mounting device characterized in that 3. The blanket mounting device according to claim 2, wherein the thickness of the strips fixed to the gripper side and the gripper end side of the blanket is reduced.