JPH0356361Y2 - - Google Patents

Description

[Detailed description of the invention] "Purpose of the invention" This invention relates to the invention of a marking mechanism for traveling sheets such as paper, and is capable of detecting defects in sheet-like materials such as paper that are continuously transported at high speed. When marking the sheet material, it is possible to appropriately correct the curled state of the edge of the sheet material such as paper, so that marks can be accurately applied to the edge of the sheet without controlling the state, and It is an object of the present invention to provide a marking mechanism that effectively follows the flapping of a traveling sheet.

Industrial Application Fields Marking technology for sheet materials such as paper that is continuously and rapidly transported Conventional technology Detecting and marking defects in sheet materials such as paper that are continuously and rapidly transported has traditionally been practiced. That is, a conventional marking mechanism of this type is shown in Japanese Utility Model Publication No. 47-37529, as shown in FIG. A felt marking means 11 is operated to protrude and retract from the machine base surface 20 as appropriate, and the top surface of the marking means 11 is a curved or tapered surface 11a (the one in practical use is a tapered surface), as shown in the imaginary line in the figure. By rising, the edge portion of the sheet 1 is brought into contact with the tapered surface 11a, and a mark is applied thereto.

Problems to be Solved by the Invention However, in the conventional device as described above, if the condition of the paper on which the marking is to be made is not appropriate, a stable mark cannot be formed between the marking and the tapered surface 11a. In other words, the edge of an object to be detected such as paper may be curled, and if the edge curl is strong, a mark will be placed in the middle of the sheet, and the stacked state may be affected by winding or other processes. If this happens, the mark cannot be detected, so it is necessary to control the state of the edge. Furthermore, the state of the mark changes depending on the transport speed, and furthermore, since marking is performed at a certain high speed, there is a disadvantage that some ink scatters and stains sheets such as paper or the like.

Means for Solving the Problems in the Structure of the Invention A sheet receiving member is provided above the edge of a sheet such as paper to be transported, and a porous liquid-permeable marking means such as felt is provided below, and the marking means is provided. in which the porous liquid-permeable marking means is provided with a flat surface on the top surface thereof, and the sheet receiving body is provided so as to be slidable with respect to the mounting seat by means of a shaft rod. In addition, an elastic material is interposed between the sheet receiving body and the mounting seat, and the mark is applied by sandwiching the sheet between the marking means and the sheet receiving body. A marking mechanism for running sheets such as paper.

Operation: A mark is applied by sandwiching the sheet between the sheet receiving body and the flat top surface of the cushioning marking means by the lifting operation means activated by the detection signal.

Since the sheet receiving body is slidably provided with respect to the mounting seat by means of a shaft rod, the sheet is held in a predetermined position even when the sheet is transported at a considerably high speed, and an appropriate relative position is always maintained with respect to the marking means. do.

Since the sheet receiving member is provided above and the marking means is provided below, ink is constantly supplied to the marking means from an ink tank or the like, thereby creating a state in which marking is possible.

An elastic material is interposed in the sheet receiving body, and the marking means is made of a porous, liquid-permeable material such as felt, and the top surface is flat, so that the edges of the sheet that are curled during the clamping can be removed. Marking can be performed while correcting the sheet shape, and even if the sheet flaps, it will not be damaged between the marking means and the sheet holding member, and it can be accurately clamped and a stable mark can be applied.

Embodiment A specific embodiment of the invention according to the present invention will be described with reference to the attached drawings.The general structural relationship of the invention is as shown in FIG. An ink tank 3 is attached to the machine body 2, which is moved and set appropriately in the sheet transport direction, and a pipe 3a that guides ink from the ink tank 3.
is introduced into a marking tank 4, in which a porous liquid-permeable marking means 5 such as felt is positioned, and the marking means 5
The top surface of the marking means 5 is a flat surface 5a, and the marking means 5 can be raised and lowered as shown by imaginary lines in FIG. ing.

Ink scattering prevention fences 7, 7 are provided on the sides and above the raised position of the marking means 5 as described above.
a, a mounting seat 8 is provided in the upper fence 7a as shown in FIG. is slidably provided by its shaft 9a, and is elastically buffered and clamped against the sheet 1 between it and the cushioning marking means 5 which is raised as shown in FIG. 2 to mark the sheet 1. On the sheet transfer area side of the fences 7 and 7a, flapping presser pieces 17 are vertically opposed and receive the edge of the sheet 1.

That is, to explain its operation, the edge of the sheet 1, such as paper, is set by appropriately moving the body 2 so that it is positioned between the presser pieces 17, 17 and the fences 7, 7a, and in this state, the sheet 1 is
is transported, and the operation for detecting defects and other defects is performed, and the elevating and lowering operation means 6 operates according to the detection signal,
The marking means 5 moves up and pinches the edge of the sheet 1 between it and the sheet receiving member 9 to apply a mark. Since the seat receiving body 9 is slidably held with respect to the mounting seat 8 by a shaft rod 9a, it is held at approximately a predetermined position even when the seat 1 moves at a considerably high speed. Since an elastic material is interposed between the mounting seat 8 and the cushioning marking means 5 such as felt, it is possible to prevent the sheet edge from curling when sliding against the sheet edge as described above. Correct the sheet, suppress the flapping of the sheet under buffer conditions, and mark it.

"Effect of the invention" According to the invention as explained above, a mark is applied by sandwiching the sheet between the porous liquid-permeable marking means 5 such as felt and the sheet receiving body 9. It is clear that extremely accurate markings can be obtained, and since the sheet receiving body 9 is slidably provided on the mounting seat 8 by means of a shaft rod 9a, the sheet material 1 can be run at a considerably high speed. It always maintains a predetermined relative position even under various conditions, and since it is slidably provided between the seat receiving body 9 and the mounting seat 8 via an elastic member 8a, the predetermined relative position is maintained as described above. The curl of the sheet edge is corrected when the sheet is sandwiched between the sheet receiving member and the sheet receiving member held by the sheet. It is possible to properly mark even under conditions where the sheet (such as paper) is flapping, and to obtain stable marks even under high-speed transport conditions without tearing or damaging the sheet. Since a mark can always be properly obtained on the edge of the sheet, it is possible to ensure detection in the post-process when the sheet is laminated, and to effectively transmit information as a system, and the marking is done in a sandwiched state. This is a highly effective idea in practical terms, as there is less ink scattering.

[Brief explanation of drawings]

The drawings show the technical contents of the present invention, and FIG. 1 is a side view showing the general structural relationship of the device according to the present invention, FIG. 2 is an enlarged sectional view of the marking means, and FIG. 3 1 is a side view similar to FIG. 1 of a conventional marking mechanism. However, in these drawings, 1 is a sheet, 2 is
is the aircraft, 3 is the ink tank, 4 is the marking tank,
Reference numeral 5 designates a porous liquid-permeable marking means, 6 a lifting operation means, 7 and 7a fences, 8 a mounting seat, 8a an elastic material, 9 a sheet receiving member, and 9a its pivot rod.

Claims (1)

[Scope of utility model registration request] A sheet receiving member is provided above the edge of the sheet such as paper to be transported, and a porous liquid-permeable marking means such as felt is provided below, and the marking means is provided with a lifting and lowering operation means that is activated by a detection signal. A flat surface is formed on the top surface of the porous liquid-permeable marking means, and the sheet receiving body is provided to be slidable with respect to the mounting seat by a shaft rod, and the sheet receiving body and the mounting seat are connected to each other. 1. A marking mechanism for a traveling sheet such as paper, characterized in that an elastic material is interposed between the marking means and the sheet receiving member, and a mark is applied by sandwiching the sheet between the marking means and the sheet receiving member.