JPS6359939B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Fields When the roll paper wound on the winding shaft is pulled out and used, curls are removed to make the paper easier to handle, and it improves the efficiency of packaging and other work. It is something that makes things better.

BACKGROUND TECHNOLOGY Conventionally, the blade 3 that removes curls from the roll paper 2 when pulling out the roll paper is
As shown in FIG. 2, the tip edge of the blade is fixed on the winding shaft 1 at a position close to the surface of the roll paper, and is used to remove curls.The edge of the blade is used to pull out the roll paper while squeezing the roll paper at a fixed position.

Problems to be Solved by the Invention Since the edge position of the conventional curl removing blade is fixed, as the roll diameter of the roll paper decreases when the roll paper is pulled out, the distance between the roll paper surface and the blade increases. expands, the bending angle of the roll paper that is bent by the edge of the blade expands, and the curl removal effect gradually decreases.

In addition, since the curling of the roll paper increases as the roll paper diameter decreases, it becomes more difficult to remove the curling of the pull-out roll paper.

The present invention is intended to prevent the curl removal effect from being pulled out from roll paper from decreasing even if the roll paper shrinks in diameter.

Means for Solving the Problems The present invention provides for a lever member having one end urged to press against the surface of a roll paper that is pivoted on a pedestal, rotatably supported on the pedestal, and other parts of the lever member The end of the roll paper is pivoted to a roll paper curl removal blade that is rotatably supported on a stand, and as the roll paper diameter decreases, a lever member rotates, and the roll paper curl is removed by the rotation of the lever member. The blade moves to the side of the rolled paper that is mounted on the shaft, preventing the distance between the surface of the rolled paper and the blade from increasing, and maintaining a substantially constant distance at all times.

Effects According to the present invention, a roller attached to one end of a lever member whose intermediate position is pivotally supported on a pedestal is pressed by a biasing means such as a coil spring against the surface of the roll paper wound around a take-up shaft mounted on the pedestal. Since the roll paper on the take-up shaft is pulled out and the diameter of the roll paper on the take-up shaft decreases, the roller maintains the pressed state with the surface of the roll paper by the urging force. Since the lever member rotates in accordance with the change in diameter, the other end of the lever member is displaced and the curl removal blade is rotated about the pivot point of the frame, thereby removing the edge of the blade. moves toward the surface of the shaft roll paper by a distance approximately equal to the distance corresponding to the amount of diameter reduction.

Therefore, as the roll paper is pulled out from the shaft roll paper, the diameter of the shaft roll paper decreases;
The distance between the tip edge of the decurling blade and the surface of the shaft-mounted roll paper can be maintained substantially constant.

Example: Winding shaft 1 with both ends suspended on a stand (not shown)
The rolled paper 2' pulled out from the rolled paper 2 is bent by the tip edge 3' of the curl removal blade 3 disposed near the surface of the rolled paper 2, It is held between a pair of pinch rollers 4 and 4' mounted above and sent out.

The proximal end of the curl removing blade 3 is rotatably connected to the pedestal by a pivot pin 5.

Further, a pressing roller 8 is attached to one end of a lever member 7 whose intermediate position is fixed to a rotating shaft 6 that is rotatably supported on a frame, and the other end of the lever member 7 is connected to the curl removing blade 3. Link via pin 9
are connected with.

Furthermore, the pivot shaft 6 of the lever member is biased to rotate by fluid pressure means, spring means, etc. so that the pressing roller 8 is always urged against the surface of the roll paper on the winding shaft.

Therefore, the roll paper 2 on the take-up shaft 1 is bent and pulled out by the tip edge 3' of the curl removal blade 3 by the rotation of the pinch rolls 4, 4', and the roll paper with curls is removed when folded. is the tip edge 3'
Because it is squeezed, the curl of the roll paper, i.e.
The curl is corrected and removed, but the diameter D of the roll paper on the take-up shaft decreases as the roll paper is pulled out, and the distance between the tip edge 3' of the curl removal blade 3 and the surface of the roll paper on the take-up shaft decreases. When enlarged, the bending angle α at the leading edge 3' of the roll paper expands, so
The squeezing effect of the leading edge 3' on the roll paper is reduced, and curl removal cannot be performed sufficiently.

However, in the present invention, as the diameter of the roll paper on the winding shaft decreases, the lever member 7 having the pressing roller 8 that is always urged against the surface of the roll paper moves clockwise in FIG. Therefore, the decurling blade 3 connected to the lever member 7 by the pin 9 rotates counterclockwise around the pivot pin 5, and the tip edge 3' of the blade 3 is connected to the winding shaft 1. move in the direction approaching.

Therefore, even if the diameter of the roll paper on the take-up shaft decreases, the distance between the surface of the roll paper on the take-up shaft and the tip edge 3' of the curl removal blade 3 does not increase.
Since the bending angle α does not widen and the squeezing action does not decrease, deterioration of the curl removal effect can be stopped.

Effects of the Invention According to the present invention, even if the diameter of the roll paper on the winding shaft decreases, the bending angle α of the roll paper, which is subjected to the squeezing action by the tip edge of the curl removal blade, does not widen, and the curl removal effect of the roll paper is reduced. Even if the roll paper diameter on the take-up shaft decreases and roll paper with strong curls is pulled out, the curls can be sufficiently removed and the paper can be sent out from the pinch roller, so the rolled paper When used as wrapping paper, for example, the wrapping process is not troublesome due to curling, and the handling process of the rolled paper can be facilitated.

[Brief explanation of the drawing]

FIG. 1 is a front view of the present invention, and FIG. 2 is a schematic front view of a conventional example. 1... Roll paper winding shaft, 2, 2'... Roll paper,
3... Curling removal blade, 3'... Tip edge,
4, 4'...Pinch roller, 7...Lever member,
8...Press roller.

Claims (1)

[Claims] 1. A lever member having one end urged to press against the surface of the roll paper on a take-up shaft mounted on a pedestal via a roller is rotatably supported on the pedestal, and the other end of the lever member is rotatably supported on the pedestal. is pivoted to a roll paper curl removal blade that is rotatably supported on a stand, and as the diameter of the roll paper decreases, the blade tip is tilted toward the roll paper surface to reduce the distance between the roll paper surface and the blade tip. A device for removing curls from roll paper that maintains it approximately constant.