JPS635896Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a stamp device for a printer that enables clear stamp printing by smoothing the movement of the stamp.

[Conventional technology]

Conventionally, stamp devices for printers print by placing a stamp facing a stamp pad and pressing the stamp toward the stamp pad with a pressing body so that the center of gravity passes through the stamp pad, and pressing the stamp surface against printing paper such as a receipt. It's summery.

[Problem that the invention attempts to solve]

Incidentally, the fit between the stamp and the guide groove that guides it is normally formed loosely in order to allow the stamp to move smoothly, but when the pressing body presses on a line passing through the center of gravity of the stamp, the fit between the stamp and the guide groove becomes loose. Because the fit is loose, the stamp wobbles unsteadily vertically or horizontally, and the stamp surface cannot be made parallel to the printing paper.
There was a problem that the printed surface became unclear due to shading.

For this reason, it is possible to improve the precision of the part and tighten the fit between the stamp and the guide groove to eliminate looseness, but in order to tighten the fit between the stamp and the guide groove, it is necessary to increase the precision of the part. , there is a problem of high cost.

The present invention was devised in view of these points, and uses a low-cost structure to smoothly move the stamp without increasing the accuracy of parts, and prints a clear stamp by pressing the stamp surface parallel to the printing paper. The present invention provides a stamp device for printers that is capable of printing.

[Means for solving problems]

In order to solve the above problems, the present invention includes a stamp base, a stamp placed opposite to the stamp base, a vertical plate that holds the stamp in front, and a guide groove formed toward the stamp base. A stamp base consisting of a horizontal plate that is slidably attached to the vertical plate and connected to one side end of the lower end of the vertical plate, and a vertical line that passes through the center of gravity of the stamp projected on the back surface of the vertical plate. The present invention is characterized in that it includes a pressing body that presses one side of the back surface of the vertical plate, and a return spring that is integrated with the pressing body and causes the stamp base to retreat from the stamp stand.

[Effect]

In the present invention, by removing the vertical line passing through the center of gravity of the stamp projected onto the back surface of the vertical plate that holds the stamp in front, and pressing one side of the back surface of the vertical plate with a pressing body, the stamp base is moved into the guide groove. Since it moves toward the stamp stand along one edge of the stamp, it is possible to absorb the wobbling between the stamp and the guide groove. In addition, by connecting a horizontal plate to one end of the lower end of the vertical plate to form a stamp base, the vertical plate can be easily elastically deformed back and forth and left and right by the pressing force of the pressing body. It is possible to perform plane correction of the surface, and it is possible to press the stamp parallel to the printing paper.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an embodiment of the present invention. In the figure, 1 is a stamp stand, 2 is a stamp body placed opposite to this stamp base 1, and this stamp body 2 is on the upper surface of an ink roller holder 3. It is slidably attached to a guide groove 4 formed toward the stamp stand 1.

As shown in FIG. 2, the stamp body 2 is composed of a stamp 6 having a stamp surface 5 formed on the front surface, a stamp holder 7 on which the stamp 6 is mounted, and a stamp base 8 that supports the stamp holder 7. . The stamp holder 7 has an open front face and one side face, a fitting groove 9 formed on the top face, and a frame-shaped insertion portion 10 provided on the back face. The stamp base 8 also includes a vertical plate 11 that is inserted into the insertion part 10 of the stamp holder 7;
a horizontal plate 1 slidably mounted in the guide groove 4;
2, and a horizontal plate 12 is connected to one side end of the lower end of the vertical plate 11.

In addition, 15 in the figure is a stamp arm that rotates around a shaft 16, and this stamp arm 15
An annular pressing member 17 is provided at the tip of the stamp arm 15, and a magnet is connected to the proximal end of the stamp arm 15 via a lever (not shown). The pressing body 17 is arranged on the back side of the vertical plate 11,
As shown in FIG. 3, one side of the back surface of the vertical plate 11 is pressed by removing the vertical line A passing through the center of gravity G of the stamp 6 projected onto the back surface of the vertical plate 11.

Further, in the figure, reference numeral 19 denotes a protrusion provided on the upper surface of the ink roller holder 3, and between this protrusion 3 and the stamp arm 15, there is a return stamp 20 for retracting the pressing body 17 from the stamp stand 1. It's being passed around. Note that the hollow part 1 of the pressing body 17
As shown in FIGS. 3 and 4, a protruding piece 13 provided on the horizontal plate 12 of the stamp base 8 is disposed within the stamp arm 1 after stamp printing is completed.
5 is rotated about the shaft 16 as a fulcrum by the spring force of the return spring 20 in the direction opposite to the direction of the arrow shown in FIG. By abutting the protruding piece 13, the stamp base 8 is pressed against the pressing body 17.
It is designed to be retracted from the stamp pad 1 integrally with the stamp pad 1. Further, reference numeral 21 in the figure represents an ink roller supported within the ink roller holder 3.

Next, the operation of the stamp device having the above structure will be explained.

The printing paper is sent upward through a printing hammer (not shown) provided below the stamp pad 1 and a printing pad drum (not shown) provided circumferentially around the ink roller 21, and is then passed between the stamp pad 1 and the stamp pad drum (not shown). It is guided between the stamp bodies 2 which are arranged opposite to each other.
When a stamp printing command is given here, a magnet (not shown) is activated to rotate the stamp arm 15 about the shaft 16 in the direction of the arrow in the figure.
As a result, the pressing body 17 provided at the tip of the stamp arm 15 presses the vertical plate 11 of the stamp base 8 from the back side, and moves the stamp base 8 along the guide groove 4 in the direction of the stamp stand 1. At this time, the pressing body 17 is pressed against the vertical plate 11 as shown in FIG.
A vertical line A passing through the center of gravity G of the stamp 6 projected onto the back surface of the stamp 6 is removed, and one side of the back surface of the vertical board 11 is pressed while moving from point a to point b on the back surface of the vertical board 11. As a result, the stamp base 4 moves in the direction of the stamp pad 1 along one edge of the guide groove 4, so even if the fit between the horizontal plate 2 of the stamp base 28 and the guide groove 4 is loose, the looseness is absorbed. The stamp 6 can be pressed parallel to the printing paper. Also,
In this embodiment, the stamp base 8 is constructed by connecting the horizontal plate 12 to one end of the lower end of the vertical plate 11, so that the vertical plate 11
c-c' and d- by the pressing force of the pressing body 17
It can be elastically deformed forward, backward, left and right within the range of d′. As a result, the surface of the stamp surface 5 can be easily corrected, so that even if there is some wobbling, the stamp 6 can be pressed parallel to the printing paper.

Note that the present invention is not limited to the above embodiments. For example, as shown in FIG. 8, the stamp holder 7 and stamp base 8 may be integrally formed by molding.

[Effect of idea]

As explained above, according to the present invention, the stamp can be pressed parallel to the printing paper without increasing the precision of the parts, so it is possible to provide a stamp device for a printer that can print clear stamps.

[Brief explanation of the drawing]

1 is a perspective view of a printer stamp device showing an embodiment of the present invention, FIG. 2 is an exploded perspective view of the main parts of FIG. 1, FIG. 3 is a plan view of the stamp device, and FIG. The figure is a sectional view taken along the - arrow in Figure 3.
6 is a plan view of the stamp base, FIG. 7 is a side view of the stamp base, and FIG. 8 is a perspective view of the stamp base showing another embodiment of the present invention. 1... Stamp stand, 2... Stamp body, 3...
Ink roller holder, 4... Guide groove, 5...
Stamp surface, 6... Stamp, 7... Stamp holder, 8... Stamp base, 15... Stamp arm, 17... Pressing body.

Claims (1)

[Scope of utility model registration request] a stamp pad, a stamp placed opposite to the stamp pad, a vertical plate that holds the stamp in front, and a lower end of the vertical plate that is slidably attached to a guide groove formed toward the stamp pad. a stamp base consisting of a horizontal plate connected to one side end; a pressing body that presses one side of the back surface of the vertical plate by removing a vertical line passing through the center of gravity of the stamp projected onto the back surface of the vertical plate; A stamp device for a printer, comprising: a return spring integrated with the pressing body for retracting the stamp base from the stamp stand.