JP2000033763A - Impression adjustment device for printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an impression adjustment device for a printer which is capable of easily adjusting an impression in a short time and thereby reducing the number of parts to save on a manufacturing cost and further minimizing the disorderly behavior of the printer when it is moved and its operating variations due to vibration during its use to the allowable extent. SOLUTION: This highlight of this impression adjustment device for a printer is to use an eccentric guide shaft 16 as a guide shaft serving as a guide member when the printer 4 is moved in the transfer direction of a label 7 and any other printing medium. The device is structured of the eccentric guide shaft 16 borne by a shaft holder 15 fixed to a device base 13, a sliding block 17 which is slidable on the eccentric guide shaft 16 and a sliding shaft 18 for the printer 4 extending in a direction which traverses an impression face 8, fitted to a sliding block 17 in a freely slidable manner. In addition, a printing mechanism 9 is firmly set on the sliding shaft 18 for the printer 4 and the eccentric guide shaft 16 is eccentrically borne on the shaft holder 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing pressure adjusting device of a printing machine, and more particularly to a printing pressure adjusting device of a printing machine which is mounted on, for example, a label sticking machine and performs date printing and other various printing operations. It is.

[0002]

2. Description of the Related Art When a printing machine equipped with a conventional label pasting machine or the like is used, when adjusting the printing pressure on a label, a slot or a groove is provided in a bracket on which the printing machine is mounted, and printing is performed. For the printing surface (pressing plate) facing the machine,
A predetermined printing pressure is adjusted by moving the printing machine along these long holes or grooves. Alternatively, there is a printer in which the pressing plate is moved up and down with respect to a printing machine to adjust printing pressure.

However, since the printing position on the label needs to be changed, when the printing machine is moved along the label transport direction, the printing pressure may change between the current position and the destination. It is difficult to adjust the printing pressure (especially fine adjustment) in this case. Also, even if you do not move the print,
There is a possibility that the printing pressure adjustment may be out of order due to vibration during use of the label pasting machine, and there is a problem that the printing pressure adjustment operation is generally difficult.

In addition to the above, in the left or right direction in the width direction of the label (when the label is located on one side in the label transfer direction,
To adjust the printing pressure only for the front or back side)
There are problems that the number of parts is very large, the cost is high, and complicated adjustment work is required.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and provides a printing pressure adjusting device for a printing machine which can easily adjust printing pressure in a short time. As an issue.

Another object of the present invention is to provide a printing pressure adjusting device for a printing machine which can reduce the number of parts and reduce costs.

Further, according to the present invention, when the printing machine moves,
Another object of the present invention is to provide a printing pressure adjusting device for a printing machine that can minimize a change due to vibration during use.

[0008]

That is, according to the present invention, not a single guide shaft but a pair of left and right guide shafts is preferably used as a guide member for moving a printing machine along the transport direction of a label or other printing medium. It is focused on making the guide shaft an eccentric guide shaft, and has a machine base, a printing mechanism and a print pressing surface attached to the machine base, and In a printing machine configured to perform a predetermined printing operation on a printing target medium by the printing mechanism, a printing pressure adjusting device for adjusting a printing pressure of the printing machine. A shaft holder provided on one side,
An eccentric guide shaft that is supported by the shaft holder and extends along the transfer direction of the print-receiving medium;
The printing mechanism includes a slide block slidable on the eccentric guide shaft, a slide shaft for a printing machine slidably mounted on the slide block and extending in a direction crossing the printing pressing surface. The printing pressure adjusting device for a printing machine, wherein the eccentric guide shaft is eccentrically mounted on the shaft holder and is supported by the eccentric guide shaft.

The eccentric guide shaft may be provided in a pair of left and right in the width direction perpendicular to the transport direction of the print medium on the print pressing surface.

[0010] In the circumferential portion of the eccentric guide shaft, there can be formed a rotation adjusting hole for turning the eccentric guide shaft.

[0011] A block switching handle for switching the slide block with respect to the eccentric guide shaft between a slidable state and a fixed state can be provided.

[0012] A shaft switching handle for switching the slide shaft for the printing press between a slidable state and a fixed state with respect to the slide block may be provided.

The present invention is applicable not only to the case where the above-described printing machine is installed in, for example, a label pasting machine and the like, but also to the case where it is installed in an arbitrary apparatus. Also,
As a form of the printing machine, it is possible to employ not only a press stamp and a heat stamp, but also a transfer method using an ink ribbon and other arbitrary ones.

In the printing pressure adjusting device for a printing machine according to the present invention, the guide shaft for moving the printing machine along the transport direction of the printing medium is an eccentric guide shaft. Just do
The printing pressure of the printing machine can be easily adjusted. Further, if the printing machine is moved on this axis with two eccentric guide shafts, it is possible to avoid a change in printing pressure when the printing machine itself moves. In addition, since the entire printing machine is mounted and moved on the pair of eccentric guide shafts, the vertical movement of the entire printing machine and the adjustment only in the left and right directions in the transport direction of the printing medium can be performed.

[0015]

1 and 2 show a printing machine having a printing pressure adjusting device according to an embodiment of the present invention.
It will be explained based on the following. FIG. 1 is a side view of the label pasting machine 1. The label pasting machine 1 has a label peeling mechanism 2 and a label pasting mechanism 3 and is equipped with a printing machine 4 and a printing pressure adjusting device 5 thereof.

In the label pasting machine 1, the label peeling mechanism 2 peels the label 7 from the band-shaped backing paper 6, and the label pasting mechanism 3 sticks the label 7 to a predetermined product P or the like.

FIG. 2 is a view of FIG.
2 is a view in the direction of arrow II, wherein the printing machine 4 includes a printing pressing surface 8.
And a printing mechanism 9. The printing mechanism 9 is supported by the printing pressure adjusting device 5.

The printing mechanism 9 includes a printing mechanism main body 10 and
It has a print stamp 11 and an ink ribbon 12.
The date stamp and other information are printed on the label 7 by pressing the label 7 and the ink ribbon 12 between the print stamp 11 and the print pressing surface 8 with a predetermined printing pressure.

The printing pressure adjusting device 5 includes a machine base 13, a guide substrate 14, a pair of shaft holders 15 in the front and rear direction of the transfer of the label 7, a pair of eccentric guide shafts 16 in the width direction of the label 7, and a slide block. 17 and a pair of upper and lower slide shafts 18 for a printing press.

The machine base 13 fixedly supports the printing press surface 8 and the guide substrate 14, and furthermore, the label peeling mechanism 2 and the label pasting mechanism 3 of the label pasting machine 1.

The guide substrate 14 is located at a lateral position (one side) of the print pressing surface 8, and a pair of front and rear shaft holders 1 is provided.
5 is fixed.

The shaft holder 15 supports the eccentric guide shaft 16 via a bearing 19 to enable rotation around the axis.

FIG. 3 is an enlarged cross-sectional view of the eccentric guide shaft 16 in a direction perpendicular to the axis of the shaft support portion. FIG. 4 is an enlarged cross-sectional view of the eccentric guide shaft 16 in a direction along the axis. A central shaft portion 16A supported by a bearing 19 of the shaft holder 15, and an eccentric shaft portion 1 eccentric from the central shaft portion 16A and supporting the slide block 17.
6B. Therefore, the eccentric guide shaft 1
With the rotation of 6, the slide block 17 moves the machine base 1 through the shaft holder 15 and the guide substrate 14.
Third, the attitude of the print pressing surface 8 is adjusted and controlled. A rotation adjusting hole 20 (FIG. 1) for rotating the eccentric guide shaft 16 is formed at an operable position on the circumferential surface of the eccentric guide shaft 16.

The slide block 17 is supported by the eccentric guide shaft 16 so as to be slidable along the print pressing surface 8 in the direction in which the label 7 is transported, and slidably supports a slide shaft 18 for a printing machine. .
Further, a block switching handle 21 is provided on a side surface of the slide block 17 so that a state of fixing the slide block 17 to the eccentric guide shaft 16 and a state of unlocking the slide block 17 (slidable state) can be switched. At the lower part of the slide block 17, an arrow 22 for confirming the movement of the label 7 in the transfer direction is attached, and the arrow 22 for movement confirms the movement scale 23 of the guide substrate 14.

The pair of printing machine slide shafts 18
The positioning plate 24 extends in a direction crossing the printing pressing surface 8, and is slidable integrally with the slide block 17 at an end opposite to the printing mechanism 9. A shaft switching handle 25 is provided on the upper surface of the slide block 17 so that a state in which the printing press slide shaft 18 is fixed to the slide block 17 and a state in which the slide shaft 18 is unlocked (slidable state) can be switched.
An arrow 26 for confirming the movement of the label 7 in the width direction is attached to the upper surface of the slide block 17, and the arrow 26 for confirming the movement is indicated by the positioning plate 24 and the printing mechanism main body 10.
And the width direction scale 27 passed between them.

When the printing machine 4 (printing mechanism 9) is moved in the direction of transport of the label 7 on the printing press surface 8 in the printing machine 4 and the printing pressure adjusting device 5 having such a configuration, the block switching handle 21 is moved. When the slide block 17 is loosened so as to be movable with respect to the eccentric guide shaft 16 and the slide block 17 is set at a predetermined position, the slide block 17 and the slide block 18 for the printing press are connected. Printing mechanism 9
Can be set at that position, and the set position is fixed by operating the block switching handle 21.

When adjusting the printing pressure of the printing machine 4 in accordance with this movement, a hexagon wrench (not shown) is inserted into the rotation adjusting hole 20 of the eccentric guide shaft 16 to thereby adjust the eccentric guide shaft 16. Is rotated around the center shaft portion 16A by a predetermined angle with respect to the shaft holder 15, so that the slide block 17 is adjusted to a predetermined angle posture with respect to the print pressing surface 8. Thus, slide block 1
The printing pressure between the cantilevered printing mechanism 9 (print stamp 11) and the printing press surface 8 can be adjusted via the printing machine 7 and the printing machine slide shaft 18. By rotating the pair of left and right eccentric guide shafts 16 respectively, the vertical direction, the horizontal direction,
It is possible to arbitrarily set and adjust the tilt state or the twist state, and fine adjustment of the printing pressure can be performed.

In order to move the printing mechanism 9 in the width direction of the printing pressing surface 8, the printing machine slide shaft 18 is slidable with respect to the slide block 17 by operating the shaft switching handle 25 of the slide block 17. The mechanism 9 is positioned at a predetermined position, and is fixed by operating the shaft switching handle 25. At the time of this movement, even when the printing pressure of the printing mechanism 9 is adjusted, the turning operation of the eccentric guide shaft 16 may be performed in the same manner as described above.

Since the printing machine slide shaft 18 and the slide block 17 supporting the printing mechanism 9 are supported by the eccentric guide shaft 16, fine adjustment of the pair of eccentric guide shafts 16 is performed. To raise the slide block 17 in the vertical direction,
It is possible to incline in any direction (such as the front side or the back side), and it is also possible to adjust only the printing pressure on one edge side of the label 7.

[0030]

As described above, according to the present invention, since the mechanism for supporting the printing machine is preferably supported by a pair of eccentric guide shafts, a simple operation of rotating the eccentric guide shaft is achieved. Can be used to adjust the printing pressure.

[Brief description of the drawings]

FIG. 1 is a side view of a label pasting machine 1 equipped with a printing machine 4 having a printing pressure adjusting device 5 according to an embodiment of the present invention.

FIG. 2 is a view in the direction of arrow II in FIG.

FIG. 3 is an enlarged cross-sectional view of the eccentric guide shaft 16 in a direction perpendicular to the axis of a shaft support portion.

FIG. 4 is an enlarged cross-sectional view in a direction along the axis.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 label pasting machine 2 label peeling mechanism 3 label pasting mechanism 4 printing machine 5 printing pressure adjusting device of printing machine 4 (embodiment) 6 band-shaped mount 7 label (medium to be printed) 8 printing pressing surface 9 printing mechanism 10 printing mechanism Main body 11 Type stamp 12 Ink ribbon 13 Machine base 14 Guide substrate 15 Shaft holder 16 A pair of left and right eccentric guide shafts 16A Central shaft portion of eccentric guide shaft 16B Eccentric shaft portion of eccentric guide shaft 16 17 Slide block 18 Slide for printing machine Shaft 19 Bearing 20 Rotation adjustment hole 21 Block switching handle 22 Movement confirmation arrow 23 Movement direction scale 24 Positioning plate 25 Shaft changeover handle 26 Movement confirmation arrow 27 Width scale P

Claims (5)

[Claims] 1. A printing machine comprising: a machine base; a printing mechanism and a print pressing surface attached to the machine base; and a predetermined printing operation is performed by the printing mechanism on a medium to be printed on the print pressing surface. A printing press, comprising: a printing pressure adjusting device that adjusts a printing pressure of the printing machine; a shaft holder fixed to the machine base and provided on one side of the printing pressing surface; An eccentric guide shaft extending along the transfer direction of the printing medium, a slide block slidable on the eccentric guide shaft, and a slidably mounted to the slide block for a printing machine extending in a direction traversing the print pressing surface. And a printing shaft, and the printing mechanism fixes the printing shaft to the printing machine slide shaft. The eccentric guide shaft is eccentrically supported by the shaft holder and is supported by the shaft holder. 2. The printing apparatus according to claim 1, wherein the eccentric guide shafts are provided on a pair of left and right sides in a width direction perpendicular to a transfer direction of the printing medium on the printing pressing surface.
A printing pressure adjusting device for a printing machine as described in the above. 3. The eccentric guide shaft has:
2. A printing pressure adjusting device for a printing machine according to claim 1, wherein a rotation adjusting hole is formed to enable the eccentric guide shaft to be rotated. 4. A printing pressure adjusting device for a printing press according to claim 1, further comprising a block switching handle for switching the slide block with respect to the eccentric guide shaft between a slidable state and a fixed state. 5. The printing pressure adjusting device for a printing press according to claim 1, further comprising a shaft switching handle for switching the slide shaft for the printing press relative to the slide block between a slidable state and a fixed state.