JPS61222787A - Automatic punching device for printing press - Google Patents

Abstract

PURPOSE:To enable favorable punching to be conducted while continuously moving a stencil paper, by a system wherein a stopping mechanism is operated through a cam, and the cam profile of the cam is appropriately designed to thereby determine a relative stopping timing of a stencil paper. CONSTITUTION:A punching die 10 is vertically moved by an eccentric action of a punching mechanism 4, and the die 10 and a back-up plate 6 cooperate in performing a punching motion. The stencil paper 2 continuously moved is brought into a stopped condition relative to the die 10, by oscillation of support links 13, 14 of the stopping mechanism. In this case, this condition is generated when moving rollers 15, 16 of the links 13, 14 are moved leftward in the figure, and the stencil paper 2 can be punched at the relative stopping timing S. The relative stopping timing S is determined by a cam curve of the cam 20, and by appropriately designing the cam curve, a relative stopping timing at which the stencil paper is fully stopped can be obtained. Accordingly, the stencil paper 2 and the punching die 10 can be prevented from being slidden relatively to each other, and adverse effects of marring of the stencil paper 2, errors in feeding quantity of the stencil paper 2 or the like on the product can be obviated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic punching device for a printing press for labels, etc.

[Conventional technology]

Conventionally, this type of printing machine is known as the one shown in Fig. 8. To explain its structure, the rolled base paper 6υ is introduced into the main body of the printing machine through a guide roll, and the impression cylinder )
is detoured around the outer circumferential surface of the printing plate, during which it is printed, and then introduced into the punching section 6 via a drying device, where the upper paper (in this case the base paper 61) is Labels, etc.) are punched out and then passed through a guide roll 6a and then wound onto a take-up roll.

The punching section 67) has a stop mechanism 69) that relatively stops the running of the base paper 6I) in the punching section (57) while allowing the base paper 51) to run continuously, and a stop mechanism 69) that relatively stops the base paper 51). A punching mechanism for punching out the base paper (6J) at the same time is installed.

As shown in Fig. 9, this punching mechanism... has a pedestal (61) disposed below the base paper 5υ, a receiving plate 6 placed on the pedestal 6υ, and an elevating table above the base paper 6υ. This lifting platform μ■
is moved up and down by an eccentric wheel mechanism, and driven by an eccentric wheel mechanism (a 6-wheel drive shaft). Base paper 6υ on board
It is configured so that the top paper of the paper is punched out.

In addition, in the case of the stopping mechanism (5!1), as shown in Fig. 9, a pair of support links 6 are provided with a fulcrum shaft that can freely swing left and right in the airframe η, and each support link IIσC is A moving roller (71) σ4 is mounted on the upper part, a guide roller σ4 (7th complement) is mounted on the fulcrum shaft, and each support link (to) (7
A connecting link σ4 is constructed between the lower parts of Cj, and η of the fuselage is
A crank ση that rotates around a rotation axis σe is disposed in , and a rond σen is connected to the tip of the crank (7'0) and the lower part of one of the support links 4, and the support link the CtCj is swung by the rotation of the crank CIη. It is configured to move.

These movements will be explained using FIGS. 10 to 13. FIG. 10 is a speed diagram of the continuous running portion of the base paper 6υ, FIG. 11 is a swing speed diagram of the support link σ, and FIG. Base paper 6
The velocity diagram when υ passes through the punched part 67), that is, Figure 10 and '! Composite of I&11 diagrams, w111
FIG. 3 is a vertical displacement diagram of the punching blade die r6e.

Figure 12 and Figure 13 and 1 = Original paper 6 of Figure 1112
The structure is such that the base paper is punched out at the relative stop time of υ (8).

[Problem that the invention seeks to solve]

However, as shown in the speed diagrams above, the stop mechanism 59) is a lever crank mechanism, so although the base paper 6υ stops momentarily, it does not stop from the start of punching to the end of punching, and therefore the traveling base paper 61) is punched out. As a result, mutual slippage occurs, and the punching blade dies catch and damage the base paper 6υ, or an error occurs in the feeding amount of the base paper 6υ, which adversely affects the product.

[Means for solving problems]

The purpose of the present invention is to eliminate these inconveniences, and the gist thereof is to provide a punching section in the feed path of the base paper that is continuously printed and sent out from the main body of the printing machine, and to In a printing machine, the above-mentioned stop mechanism is provided. The automatic punching device for a printing press is characterized in that the operation is performed by a cam, and the relative stop timing of the base paper is determined by appropriately designing the cam shape of the cam.

[For production]

The stop mechanism is operated by a cam, and the relative stop timing is determined by the cam, so that the base paper completely stops running from the start to the end of punching.

〔Example〕

W&1 to FIG. 7 show an automatic punching device for a printing press to which the present invention is applied, and since the overall arrangement is the same as that in FIG. 8, the internal structure of the punching section (1) will be explained.

The punching unit (1) in this example has a stop mechanism (3) that relatively stops the running of the base paper (2) and a punching mechanism (4) that punches out the base paper (2) when the base paper (2) is stopped relative to each other. It consists of

As shown in Fig. 1, this punching mechanism (4) has a pedestal (5) disposed below the base paper (2), a receiving plate (6) placed on the pedestal (5), and a base paper (2) A lifting platform (force) is provided above the lifting platform (the force is used to move up and down using an eccentric wheel mechanism (8), the eccentric wheel mechanism (8) is driven by a drive shaft (9), and the lifting platform is A punching blade die (11) is attached to (7), and the punching blade die tll and the receiving plate (6) are configured to punch out the upper paper of the base paper (2) on the receiving plate (6).

In addition, as for the stop mechanism (3), as shown in Fig. 1,
A pair of support links (lal (14)) are arranged on the fuselage (Ll) with a fulcrum shaft ←4 so as to be able to swing to the right and left, and each support link α3 (lal) is pivoted with a moving , fulcrum shaft ←:: A guide roller αη Kasumi is mounted on the axis, a connecting link 0 is constructed between the lower parts of each support link α3 (141), a cam 4 is fixed to one of the drive shafts (9), and the machine body αυ A cam lever 3υ is pivotally attached to the cam lever 3υ by a pin (221) such that the cam lever 3υ can swing freely; A cam roller (c) is brought into contact with the outer circumferential surface of the two cams 4, an arm is protruded from one of the support links (I3), and the tip of the arm and the other end of the cam lever circle are connected. are connected by a connecting rod (c).

In this case, as shown in Fig. 6.7, an adjustment long hole (C) is formed at the other end of the cam lever 0υ, and the movable armature is moved into the adjustment hole (C) with bolts (C) in the four directions of the pin. Section #a is fixedly engaged, and one end of the connecting rod (c) is connected to the movable piece (5), thereby making it possible to vary the swing range of the support links Q3, Q4).

To explain these movements using figures 2 to 5, figure 2 is the speed diagram of the continuous running portion of the base paper (2) (same as figure 10), and the third cause is the support and holding link α'jl. (The oscillating speed diagram of I4, Figure 4 is the velocity diagram when the base paper (2) passes through the punching part (1), that is, the combination of Figures 2 and 3, Figure 5 is the vertical movement diagram of the punching blade Ql (same as in Fig. 13), and in Figs. 4 and 5, the relative stop timing (8) of the base paper (2) in Fig. 4 is It is constructed to punch out raw paper.

Since this embodiment has the above configuration, the punching blade die σ1 moves up and down due to the eccentric action of the punching mechanism aυ, and the punching movement is caused by the cooperative action of the punching blade die and the receiving plate (6). At the same time, the continuously running base paper (2) is brought into a stopped state relative to the punching blade die (1 (1) by the swinging of the support link (13 (141) of the stop mechanism (3). Support link [3a
This occurs when the moving roller (15) of 4) moves in a row to the left in the figure (when moving to the right, the base paper runs at an increased speed), and the base paper (2) is moved at this relative stop period (8). Can be punched out.

In this case, the relative stop timing (8) is determined by the cam curve of cam 4, and by its design, it is possible to obtain the relative stop timing (8) at which the base paper completely stops, and this relative stop timing ( 8) It is possible to punch out the base paper (2), and it is possible to eliminate mutual slippage between the base paper (2) and the punching knife shape, thereby preventing scratches on the base paper (2) and errors in the feed amount of the base paper (2). It is possible to avoid adverse effects on products due to such factors.

Furthermore, by appropriately designing the cam diagram of the cam wire, the predetermined relative stop timing (8) can be easily obtained.

In addition, in this case, since the transfer length L) of the base paper (2) and the lever length (°C) in FIG.
) can be changed, and the size of the base paper (2) can be changed easily.

In this embodiment, the cam 4 is composed of two sheets, which is a so-called composite cam construction, but a single cam may be used, and the cam curve may be changed as appropriate.

〔Effect of the invention〕

Since the present invention is configured as described above, the relative stop timing of the base paper can be determined by the cam curve of the cam, and the relative stop time at which the base paper stops for a certain period can be obtained by its design, and this relative stop time can be determined by the cam curve of the cam. The base paper can be punched out when the target is stopped.

Good punching is possible while running the base paper continuously, and the print finish is good (-, the base paper is not scratched).

It is possible to avoid adverse effects on the product due to errors in the feed amount of the base paper, changes in the tension of the base paper, etc., and speeding up of printing work can be expected.

As described above, the intended purpose can be fully achieved.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 is an explanatory front view of the punching section, Fig. 2 is a speed diagram of the continuously running portion of the base paper, and Fig. 3 is the creeping speed of the support link. Figure 4 is a velocity diagram when the base paper passes through the punching section, Figure 5 is a vertical flow diagram of the punching blade, Figure 6 is an explanatory front view of the stop mechanism, Figure 7 8 is a cross-sectional view of the same, FIG. 8 is an overall configuration diagram, FIG. 9 is an explanatory front view of the conventional punching section, FIG. 10 is a speed diagram of the continuous running portion of the base paper, and FIG. 11 is its support link. Figure IJ12 is a velocity diagram when the base paper passes through the punching section, and Figure 13 is a vertical flow diagram of the punching blade. (1) Punching section, (2) Base paper, (3) Stopping mechanism, (4) Punching mechanism, (8) Relative stop timing. November 5, 1980 Applicant Sanjo Kikai Seisakusho Co., Ltd. Inventor 1) Masado Fuku 1) Kazu Kengo Atsushi Kumakura Department 7z# ゛ Engraving of drawings (1) Illustrated chain 7F frequent 111F? - None) 7/1m 7hy 770cm 7 z4ij Procedural amendment (frame 0 April 24, 1986l) Display of the case 1982 Japanese Patent Application No. 232774 2 Name of the invention Automatic punching device for printing press 3 Person making the amendment Relationship to the case Patent applicant Co., Ltd. Sanjo Kikai Seisakusho 4 Agent 5 Date of amendment order March 25, 1986 (shipment date) 6 Target of amendment Correction of drawing “Figure 4”, “Figure 5”
Correction, "Figure 12" correction, "Figure 13" correction.

Claims (1)

[Claims] A punching section is arranged in the sending path of the base paper that is continuously printed and sent out from the printing machine main body, and the running of the base paper inside the punching section is relatively stopped while allowing the base paper to continue running through the punching section. In a printing machine equipped with a stop mechanism for stopping the base paper and a punching mechanism for punching the base paper at the relative stop timing of the base paper, the operation of the stop mechanism is performed by a cam, and the cam shape of the cam is appropriately designed. An automatic punching device for a printing press, characterized in that it is configured to determine the relative stop timing of the printing press.