JPS6346437Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a paper strip that is placed in the middle of a path for transporting a paper strip that has been printed by a rotary printing machine or the like to a folding position or a perforation position. This article relates to the mounting structure of the turn bar.

[Conventional technology]

Traditionally, in order to efficiently print the same printed matter,
A large number of identical designs are printed at intervals in the width direction of a strip of paper, and this strip of paper is cut vertically using a sliver to form two strips of paper (the same design is printed on each strip of paper). The two strips of paper are overlapped again via a large number of tension rollers, press rollers, and guide rollers, and a crease is formed at the center line position (predetermined position) of the two stacked paper strips using a chopper. Alternatively, perforations are formed using a perforation blade roller.

By the way, if the area of the image to be printed changes, the width of the strip of paper to be printed must also be changed. When the width of the paper strip is changed in this way, when the paper strip is cut in the longitudinal direction and then stacked again, the position of the center line of the stacked paper strips will also change. If the center position changes depending on the paper width, the position of the chopper or perforation blade roller is fixed, so it is no longer possible to form folds or perforations along the center line of the paper strip.

Therefore, conventionally, a turn bar is placed in the middle of the running path of each paper strip cut into two so as to form an angle of, for example, 45 degrees with the running direction, and by moving this turn bar, the paper strips are cut into two strips and the paper strips are cut into two strips. The position of the strip paper is shifted in the axial direction of the roller so that the center line of the two stacked paper strips and the chopper or perforation blade roller are aligned.

[Problem that the invention attempts to solve]

The above-mentioned turn bar itself does not rotate, but has both ends fixed to support blocks, and the strip of paper is folded back so as to slide on the surface of the turn bar, thereby changing direction. Therefore, Teflon tape is attached to the surface of the turn bar to improve the slippage of the paper strip.

However, after a certain amount of use, the Teflon tape will rub and wear out, so it is necessary to reapply the Teflon tape. However, as described above, since the turn bar is fixed to the support block, it is troublesome to replace the Teflon tape and the machine down time is also increased.

[Means for solving problems]

In order to solve the above problems, the present invention provides protrusions in the shape of partially cut out cylinders at both ends of the shaft of the turn bar, and the protrusions fit into support blocks that support both ends of the shaft of the turn bar. A circular hole for insertion and an insertion hole for inserting a protrusion into the circular hole were formed, and the turn bar was made detachable from the support block.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. ₁ is _a schematic configuration _diagram of a paper threading section to which the turn bar mounting structure according to the present invention _is applied. A presser roller that holds the paper strip W between the
P ₁ , P ₂ , P ₃ , P ₄ , guide rollers G ₁ , G ₂ , G ₃ , G ₄ , G ₅ , G ₆ , which rotate the running direction of the paper strip W;
G ₇ , G ₈ , G ₉ , turn bar 1 placed between guide rollers G ₁ and G ₂ , turn bar 2 placed between guide rollers G ₇ and G ₈ , and turn bar 2 placed between guide rollers G ₃ and G ₄ . a correction roller 3 disposed between the guide roller _G9 and the tension roller _T4 , a slitter 5 disposed between the tension rollers _T1 and _T2 , and a vertical roller disposed downstream of the tension roller _T4 . A perforation roller 6, a presser roller 7 that pinches the paper strip W between itself and the vertical perforation rollers 6, and a vertical perforation blade roller 8 that makes perforations in the paper strip W that is sandwiched between them are arranged.

Then, the printed paper strip W is moved to a tension roller.
The paper strips W 1 and W 2 are separated by the slitter 5 while traveling from T ₁ to the tension roller T _{2 ,} and the paper strip W ₁ is separated by the tension roller T ₂ , the guide roller G ₁ , the turn bar 1 and the guide roller _. G ₂ , G ₃ , correction roller 3,
The paper strip W 2 passes through guide rollers G ₄ , G ₅ , tension roller T ₃ and reaches vertical perforation roller 6 , while paper strip W ₂ passes through tension roller T ₂ , guide rollers G ₆ , G ₇ , turn bar 2,
It passes through guide rollers G ₈ , G ₉ , correction roller 4 and tension roller T ₄ to reach vertical perforation roller ₆ , where paper strips W ₁ and W ₂ are overlapped and vertically sewn as they are. It is passed between the sewing machine roller 6 and presser rollers 7, 7, and at this time, perforations are formed by the vertical perforation blade roller 8 at the center lines of the paper strips _W1 , _W2 .

When the width of the paper strip W is changed, the turn bars 1 and 2 are moved, and the position of the paper strips W ₁ and W ₂ hanging on the tension roller is moved in the axial direction of the tension roller, so that the vertical perforation blade roller 8 is always moved. The position where it hits coincides with the center line of the overlapped paper strips W ₁ and W ₂ .

Fig. 2 is an enlarged perspective view of the mounting portion of the turn bar 1, and Fig. 3 is a perspective view showing a part of the turn bar 1 with a cutaway.The turn bar 2 has the same structure, so its explanation will be omitted. .

That is, the turn bar 1 has a hollow shape, and a large number of air jet holes 11...11 are formed on its surface.
Additionally, Teflon tape is attached to the surface of the turn bar 1 to improve sliding properties. In other words, the turn bar 1 itself does not rotate, but the strip of paper hung on the turn bar 1
W ₁ changes direction so as to slide on the surface of turn bar 1, and by moving turn bar 1, the position where it is applied to turn bar 1 is shifted, and as a result, it is applied to tension rollers T ₃ and T ₄ located downstream of turn bar 1. The position also changes.

By the way, both ends of the turn bar 1 are firmly supported by support blocks 12 and 13. Its structure is as follows.

That is, as shown in FIG. 3, a shaft 14 projects from the end of the turn bar 1, and a protrusion 15 is fitted onto the shaft 14. The protrusion 15 has chord sides 15e and 15d that are formed by cutting a part of the cylinder parallel to each other at positions spaced apart from each other.
, an arcuate side 15e connecting one end of both chordal sides 15c and 15d, an escape slope 15a formed on the opposite side of the arcuate side 15e, and a locking groove 15b connected to the slope 15a. As shown in FIG. 4, the block 12 has a longitudinal width of the protrusion 15 in the center.
A circular hole 16 whose diameter is approximately equal to or slightly larger than _L1 , an insertion port 17 connected to the circular hole 16, and a hole 18 connected to the circular hole 16 from a direction perpendicular to the insertion port 17 are formed.

A stopper 19 is provided in a part of the circular hole 16, and the dimensions of the insertion opening 17 are made approximately equal to or slightly larger than the width _L2 of both chords of the protrusion 15, and the upper surface of the support block 12 is There is a support plate 20
is fixed, a threaded rod 21 is inserted through this support plate 20, and a handle 22 is attached to the upper end of this threaded rod 21.
However, a holding member 23 is attached to the lower end of the threaded rod 21 facing into the hole 18, and the holding member 23 is moved up and down along the hole 18 by turning the handle 22.

In the above, the turn bar 1 is supported by the support block 1.
2, insert the turn bar 1 in the direction of arrow a with the protrusion 15 facing sideways as shown by the imaginary line in FIG. Then, since the dimensions of the insertion opening 17 are approximately equal to the width _L2 of the protrusion 15, the protrusion 15 enters into the circular hole 16 smoothly. Then move turn bar 1 to arrow b
Rotate 90° in the direction. In this case, the circular hole 16
The diameter of the protrusion 15 is approximately equal to the vertical width _L1 , so it rotates smoothly, and since the protrusion 15 is formed with an inclined surface 15a, the stopper 19 does not touch the corner of the protrusion when rotating. The locking groove 15b engages with the stopper 19 without hitting the stopper 19. This state is shown by a solid line.

Thereafter, the handle 22 is turned to lower the presser member 23, the protrusion 15 is pressed against the circular hole 16, and the turn bar 1 is fixed to the support block 12.

Further, in order to remove the turn bar 1 from the support block 12, the handle 22 is turned in the opposite direction to that described above to release the pressing state by the presser member 23, and then the turn bar 1 is rotated 90 degrees and pulled out laterally. Incidentally, when attaching and detaching the turn bar 1, the same operations are performed on the support blocks 12 and 13.

[Effect of idea]

As explained above, according to the present invention, the turn bar can be installed and removed with just one touch by turning the handle and inserting or pulling out the turn bar. Therefore, for example, it is possible to prepare a replacement turn bar in advance. For example, if the Teflon tape becomes worn out, it can be replaced in a short time, minimizing downtime for the machine.Also, the Teflon tape can be replaced with the turn bar removed, making the work easier. Each has its own effects.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of a paper threading section to which the turn bar mounting structure of the present invention is applied, Fig. 2 is an enlarged perspective view of the turn bar mounted state, Fig. 4 is a partially cutaway perspective view of the turn bar, and Fig. 4 is a side view of the turn bar mounting portion. 1, 2... turn bar, 12, 13... support block, 14... turn bar shaft, 15... protrusion, 16... circular hole, 17... insertion port, 19...
Stopper, 23...pressure member.

Claims (1)

[Scope of utility model registration request] In the turn bar disposed in the middle of the conveyance path of the paper strip, which is conveyed to a predetermined position via a large number of tension rollers, presser rollers, and guide rollers, a support block is provided so that the turn bar can be attached to and detached from the support block. A circular hole and an insertion opening communicating with the circular hole and having a width smaller than the diameter of the circular hole are formed, a stopper is provided on the inner surface of the circular hole, and the circular hole is provided at both ends of the shaft of the turn bar. A protrusion that fits into the hole is provided, and this protrusion has two chord sides formed by cutting off part of a circle parallel to the diameter line,
It has an arcuate side that connects one end of both strings, a relief edge formed on the opposite side of the arcuate edge, and a locking groove that is formed following the relief edge and is locked to the stopper. The turn bar is characterized in that the protrusion is inserted into the circular hole with each string piece along the insertion opening, and then the turn bar is rotated so that the locking groove is locked with the stopper. mounting structure.