JP2545021B2 - Method for punching strips in a printing machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of punching a strip-shaped product such as a printed strip-shaped label in a printing machine for punching a desired portion of the strip.

[0002]

2. Description of the Related Art In a conventional label printing machine, a rotary die 12 (rotary cutter) for continuously punching a desired portion M of a printed strip-shaped label 11 rotates at a constant speed as shown in FIG. With a structure in which a punching blade S ₁ is provided on the outer periphery of the shaft member 13 that is to be driven, the desired portion M of the belt-shaped label 11 that is continuously conveyed is continuously punched by the punching blade S ₁ .

Therefore, the rotary die 12 has a strip-shaped label.
It is a major premise to design in consideration of the punched-out portion length P ₁ and the 1-cycle length C ₁ of 11. Conversely, conversely, the rotary die 12 must be prepared every time the punching portion length P ₁ and the one-cycle length C ₁ change (note that the one-cycle length C ₁ of the rotary die 12 is the punching portion. It is the sum of the length P ₁ and the length K ₁ of the unpunched portion.).

Therefore, in order to solve this point, as shown in FIG. 2, a rotary die 16 having a structure in which a magnet plate 15 protruding from a punching blade S ₂ is detachably fitted on the outer periphery of a rotating shaft member 14. (Note that in this case as well, the one-cycle length C _{2 of the} rotary die 16 is the sum of the punching portion length P ₂ and the non-punching portion length K _2. )

With this rotary die 16, a number of types of magnet plates 15 with the punching portion length P ₂ of the punching blade S ₂ set appropriately are prepared and used by being fitted onto the shaft member 14 as appropriate. Although the magnet plate 15 has to be replaced, the shaft member 14 (rotary die 16) does not have to be replaced, and in this sense, the inconvenience of the conventional example of FIG. 1 can be eliminated to some extent.

[0006]

However, in the conventional example of FIG. 2 as well, it is necessary to prepare a large number of magnet plates 15 having different punching portion lengths P ₂ of the punching blades S ₂ as described above, and , 1 cycle length C ₂ is determined by the diameter of the rotary die 16, so the punching part length P ₂
However, if a punching portion length P _{2 of} one cycle length C ₂ or more is required, it may be necessary to replace the rotary die 16 with a larger diameter.

The present invention provides a method for punching strips in a printing machine which solves the above drawbacks.

[0008]

The gist of the present invention will be described with reference to the accompanying drawings.

A punching roller 2 is rotatably brought into contact with a printed strip 1 in a printing section which is continuously conveyed, and a punching blade provided on a peripheral surface of the punching roller 2 makes a predetermined position on the strip 1 predetermined. A method for punching a strip 1 in a printing machine, which continuously punches and forms window holes of a constant length, in which two punching rollers 2 (A and B) are arranged side by side at a predetermined interval and punching is performed. Distance between rollers 2 (A / B) arranged in parallel, outer diameter of each punching roller 2 (A / B), punching length of punching blade of each punching roller 2 (A / B), punching roller 2 (A / B) ), The conveyance speed of the strip 1 and the rotational phase difference between the punching rollers 2 (A and B).
(A / B) A window punched by one punching blade by appropriately setting the phase of each punching blade with respect to the strip 1 and synthesizing the window holes punched by each punching blade in an overlapping or continuous manner. The present invention relates to a method for punching a band-like material in a printing machine, which is characterized in that a window hole having a length not less than a desired length is formed.

[0010]

The window of a length obtained by combining the length L _A and the length L _B of the strip 1 by appropriately setting the phases of the punching blades of the punching rollers 2 (A and B) with respect to the strip 1. The holes are continuously punched out. For example, punching roller 2 (A
By appropriately adjusting the rotation speed of B) and the conveyance speed of the strip 1 to appropriately set the phase of the punching blades of the punching rollers 2 (A and B) relative to the strip 1,
A window of arbitrary length is continuously punched out.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 3 shows an embodiment in which the present invention is applied to a punching section following a printing section of a label printing machine, which will be described below.

In this embodiment, the punching rollers 2 are two bodies. The two punching rollers 2 have the same structure as that shown in FIG. 2, and the two punching rollers 2 have the same diameter. The punching roller 2 is provided with an annular punching blade having the same punching portion length, and the intervals between the punching rollers 2 are set to predetermined intervals.

Further, the rotation speed of each punching roller 2 is appropriately adjusted by a computer or the like, and the phase of each punching roller 2 with respect to the strip-shaped label (strip 1) is appropriately controlled.

The rotation speed of both punching rollers 2 during punching is controlled to be the same as the conveyance speed of the strip-shaped label.

The strip 1 is continuously passed through the punching roller 2. The first punching roller A has a portion A in FIG.
The portion B in FIG. 3 is punched by the second punching roller B, and the window holes are continuously formed in the strip-shaped label by this punching. The punching rollers A and B rotate at the same speed as the conveyance speed of the strip-shaped label at the time of punching, and the speed is changed (including stop) after the punching.

That is, in this embodiment, the rotation speed of either one of the punching rollers is changed after the punching blade punches the strip-shaped label, thereby changing the length of the portion which is not punched and the window hole to be punched next. By changing the position (phase position with respect to the band-shaped label), the rotation speed of the other punching roller is also changed accordingly, and the window hole punched by the punching blade overlaps with the already punched window hole or is just continuous or predetermined. It is possible to form a window hole in which two window holes are combined with each other at an arbitrary interval.

In the case of FIG. 3, the lengths of the A portion and the B portion are L _A and L _B , respectively, and in this case, L _A and L _B are the same, and the intervals between the A portion and the B portion are x and y, respectively. In this case, x and y are the same, and the lengths of the non-punching portions of the first punching roller A and the second punching roller B are T _A and T, respectively.
_B , in this case T _A and T _B are the same, the one-cycle length C _A of the first punching roller _A is L _A + T _A , and the one-cycle length of the second punching roller B is C _B is
L _B + T _B , in which case both are the same. Reference numerals S ₃ , S ₄ , S ₅ , and S _{6 in} FIG. 3 denote ends of the punching blade S.

Therefore, by appropriately setting the rotation speeds of the first punching roller A and the second punching roller B, the punching portion length and the spacing between the punching portions can be arbitrarily changed without replacing the magnet plate. It is possible to blame.

In order to make it easy to understand this, assuming that the two punching rollers A and B are both rotating at a constant speed, the punching portion punched by the first punching roller A shown in FIG. 4 will be described. The position where the position and the punching part position punched by the second punching roller B are combined becomes the window hole position punched by the two punching rollers A and B, and the phase of the first punching roller A with respect to the band-shaped label, Since the lengths x and y in FIG. 3 can be set arbitrarily by appropriately setting the phase of the punching roller B with respect to the belt-shaped label, it becomes possible to arbitrarily set the interval between the punching portions and the length. If x and y are set so as to be zero, it is possible to form just continuous window holes as shown in FIG. 5, and the lengths x and y can be made negative. By setting, that is caused to overlap the L _A and L _B allows the formation of the window hole as shown in FIG. 6 (this is not Uchinuke unless punching roller 2 large diameter window opening It means that it can be formed by a punching roller 2 having a small diameter.

Therefore, by using the two punching rollers A and B, the phase of the first punching roller A with respect to the belt-like label and the phase of the second punching roller B with respect to the belt-like label are determined by the first punching roller A and the second punching roller A. By appropriately adjusting the rotation speed of the punching roller B, the punching portion length and the interval between the punching portions can be set arbitrarily as described above. Therefore, it is possible to form window holes of various patterns and lengths without replacing the punching roller each time as in the conventional example. That is, the length of the window holes can be easily adjusted to at least the combined length of the window holes punched by the punching blades (the combined length) (of course, the length of two window holes or more). It is also possible to continuously form the window holes at arbitrary intervals (the intervals may not be constant).

Incidentally, FIG. 7 shows a situation in which round punching portions are continuously punched.

From the above, according to this embodiment, a very practical punching device is provided.

Instead of changing the rotational speed of the punching rollers A and B in this embodiment to a variable speed, the punching rollers A and B are configured to rotate at a constant speed and the conveying speed of the strip 1 (the conveying direction is reversed). The direction of the punching rollers A and B with respect to the belt-shaped material 1 may be set appropriately, and the punching roller A
The phase for the strip 1 may be appropriately designed by making the interval between B variable.

Others In this embodiment, for example, the first punching roller A is the main punching roller, the second punching roller B is the preliminary punching roller, and the first punching roller A has a predetermined size. When it is desired to slightly increase the length of the window hole after forming the window hole, the second punching roller B is used as shown in FIG. 6 to easily correct the length of the window hole. You can do it. Therefore, also in this respect, the present embodiment is practical.

Although the drawing shows the case where the two punching rollers 2 have the same diameter, both rollers may have different diameters.

What has been described above is that the punching roller 2 is
The same applies to the bodies, 4 bodies, ..., N bodies.

[0027]

According to the present invention, as described above, punching of any pattern can be efficiently performed, and even a window hole having a length equal to or longer than the outer peripheral length of one punching roller can be easily punched by simple control. It is intended to provide a method for punching a strip in a printing machine that can be formed.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a conventional example.

FIG. 2 is an explanatory diagram of a conventional example.

FIG. 3 is an explanatory diagram of the present embodiment.

FIG. 4 is an explanatory diagram of the present embodiment.

FIG. 5 is an explanatory diagram of the present embodiment.

FIG. 6 is an explanatory diagram of the present embodiment.

FIG. 7 is an explanatory diagram of the present embodiment.

[Explanation of symbols]

 1 band 2 punching roller

Claims (1)

(57) [Claims] 1. A punching roller 2 is rotatively brought into contact with a printed strip 1 in a printing section which is continuously conveyed, and an arbitrary portion of the strip 1 is cut by a punching blade provided on a peripheral surface of the punching roller 2. A method of punching a strip 1 in a printing machine, in which a window hole of a predetermined length is continuously punched and formed at regular intervals, in which two punching rollers 2 (A and B) are arranged side by side at a predetermined interval. , Punching roller 2 (A / B)
, The outer diameter of each punching roller 2 (A / B), the punching length of the punching blade of each punching roller 2 (A / B), the rotation speed of each punching roller 2 (A / B), the band The punching roller 2 by appropriately adjusting the conveying speed of 1 and the rotational phase difference between the punching rollers 2 (A and B).
(A / B) A window punched by one punching blade by appropriately setting the phase of each punching blade with respect to the strip 1 and synthesizing the window holes punched by each punching blade in an overlapping or continuous manner. A method of punching a band in a printing machine, which comprises forming a window hole having a desired length by making it longer than the hole length.