JPH022714B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a printing device that prints a product code or the like on a conveyed object such as a panel that is conveyed on a conveyor using a roll.

In this way, when printing on a panel, etc. using a printing roll, it is necessary to rotate this printing roll to transfer the ink attached to the printing roll to the panel, etc. In this case, conventionally, the printing roll is Since it was rotated using a special drive device, it had the disadvantage of high equipment costs. In order to solve this problem, conventionally, a rod-shaped or plate-shaped actuating body is projected onto the transfer path of the object to be transferred, and the front end surface of the object comes into contact with the actuating body to rotate the actuating body. In response to this, there is a device in which the printing plate is pressed against the side surface of the object to be transferred (see Japanese Patent Laid-Open No. 106507/1983). Therefore, according to this conventional invention, since the stamp is operated by operating the operating body by the object to be transferred, there is an advantage that a special drive device for operating the printing plate is not required. However, in this conventional invention, the front end surface of the object to be transferred comes into contact with the actuating body and rotates as the object is transferred, and there is a drawback that the printing position is always fixed. . That is, although the printing plate is placed at a certain distance from the operating body at the rear in the transport direction, the printing position is always a certain distance from the front end of the object to be transported, and There is a drawback that the printing position cannot be changed in the transport direction depending on the object. In addition, in the case where the actuating body is brought into contact with the front end surface of the transferred object, for example, when a panel or the like is transferred in a horizontal state on a roller conveyor, or when the actuating body is rotated in the horizontal direction, Since the panel is thin, malfunction may occur, and therefore, it is necessary to project the actuating body from above the object to be transferred and rotate it in the vertical direction. In this case, in order to rotate this actuating body over a fairly wide range, it is necessary to make the tip of the actuating body largely protrude toward the roller conveyor, which would cause the roller conveyor to get in the way.
There is a disadvantage that the operating body cannot be rotated to a sufficient angle. That is, this conventional device was not suitable for printing on thin panels and the like. This invention eliminates these conventional drawbacks, allows the printing position on the transferred object to be set arbitrarily, and makes it possible to print reliably even on thin panels. In order to achieve a certain object, the present invention provides a printing device that presses a printing roll against an object to be transported by a conveyor to print on the object. The frame is provided with a drive roll and a printing roll that are rotated by being pressed against the object to be transferred when the frame advances, and the drive roll and printing roll are interlocked and connected to each other.

The configuration of the present invention will be described below based on the illustrated embodiments.

In the figure, 1 is a roller conveyor consisting of a large number of rollers 1a, and a panel 2, which is an object to be transported, is transported on this conveyor 1. Note that the conveyor 1 may have a structure using a belt or other material.

On the other hand, above the conveyor 1, there are two square pipe-shaped hanging stands 3, 3 in a direction perpendicular to the conveyor 1.
are arranged, and a vertical cylindrical sliding guide 4 is attached between the two hanging stands 3, 3.
5 is an air cylinder attached downward to the upper end of this sliding guide 4, and the rod tip of this air cylinder 5 is connected to a sliding rod 6 inserted into the sliding guide 4, and the air cylinder 5 is connected to a sliding rod 6 inserted into the sliding guide 4. This sliding rod 6 is caused to slide in the vertical direction by the cylinder 5.

Reference numeral 7 denotes a frame for mounting a roll, which has a horizontal top plate 8 and two triangular supporting plates 9, 9 fixed to both left and right ends of the top plate 8. and is connected to the lower end of the sliding rod 6 in a hanging manner. On the front side of this frame 7, as shown in FIG. Sprockets 13 are fitted respectively.

Next, 14, 14 are two horizontal supports 1
The front end of the arm 14 is connected to the driven shaft 11 on which the printing roll 12 is attached by a bearing 16.
It is pivotally connected via the. On the other hand, on the rear side of the arm 14, the lower end of a guide rod 17 is pivotally attached to the one support 15a, and the upper end of the guide rod 17 is slidably inserted into the top plate 8 of the frame 7. The arm 14 is supported in a suspended state. 18 is externally fitted onto this guide rod 17, its upper end is attached to the spring receiver 19a on the lower surface of the top plate 8, and its lower end is
This is a compression spring that is in contact with a spring receiver 19b that is also fixed to the guide rod 17, thereby causing the arm 14 to
It is energized to rotate it downward. Both the left and right arms 14, 1 rotatably supported in this way
A drive shaft 20 is pivotally supported between the drive shafts 2 and 4.
0, a drive sprocket 21 corresponding to the driven sprocket 13 and a drive roll 22 corresponding to the printing roll 12 are fitted, and a chain 23 is wound between both sprockets 21 and 13. The drive roll 22 and the printing roll 12 are interlocked and connected.

A shaft 24 shown in FIG.
a felt roll supported through 5,
This felt roll 24 is in contact with the printing roll 12, and the ink soaked into the felt roll 24 is made to adhere to the printing roll 12. Reference numeral 26 denotes a gate-shaped limit switch mounting base attached to the lower surface of the support base 3 along the transport direction of the panel 2, and limit switches 27 and 28 are attached to the front and rear tips protruding downward, respectively. The actuators 27a, 28a of the limit switches 27, 28 protrude onto the transport path of the panel 2. These limit switches 27,2
Reference numeral 8 operates the air cylinder 5, and the panel 2 is transferred and the panel 2 is moved.
When the tip of the lever hits the actuator 27a on the rear side, that is, on the left side in the figure, the actuator 27a rotates and its limit switch 27 is activated, thereby actuating the air cylinder 5 and releasing the sliding rod. 6 and the frame 7 are lowered, and then, when the tip of the panel 2 hits the front actuator 28a, the limit switch 28 is activated at the same time to raise the frame 7.

Now, to explain the operation based on the above configuration, when the panel 2 hits the rear limit switch actuator 27a and the frame 7 descends as described above, the drive roll 22 first moves the upper surface of the transported panel 2. Then, the arm 14 compresses the compression spring 18 and rotates, and as the frame 7 further descends, the compression spring 1
The drive roll 22 is pressed against the panel 2 by the force of 8, and the drive roll 22 begins to rotate, and at the same time, the printing roll 12 rotates via the sprockets 21, 13 and the chain 23. And furthermore,
When descending, the printing roll 12 is pressed onto the panel 2 as shown in FIG. 3, whereby the ink on the printing roll 12 is transferred to the panel 2 and printing is performed. Next, when the panel 2 is further moved and hits the front limit switch actuator 28a, the frame 7 rises and printing ends, as described above.
The arm 14 rotates in the original direction due to the repulsive force of the compression spring 18, and returns to the state shown in FIG. 1.

The present invention has the above configuration, and according to the present invention, the drive roll is brought into pressure contact with the transferred object to rotate the drive roll, and the printing roll is rotated by the drive roll. Therefore, there is no need to provide a motor or other special drive device to rotate the printing roll, and the structure is simple and can be manufactured at low cost. In particular, in the present invention, by bringing the drive roll into pressure contact with the object to be transported,
This drive roll is rotated to rotate the printing roll, and therefore, compared to the conventional system in which the actuating body is brought into contact with the front end surface of the object to be transferred, the drive roll's contact with the object to be transferred is more effective. By arbitrarily setting the pressure contact position, it is possible to arbitrarily change the printing position on the object to be transported by the printing roll placed at a certain distance from the drive roll. In addition, by pressing the drive roll against the object to be transferred, the drive roll can be rotated 360 degrees, and by pressing against the surface of the object, even thin panels can be rotated over a wide range. It can be rotated across.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional front view of the printing apparatus of the present invention, FIG. 2 is a sectional view taken along the line A--A in FIG. 1, and FIG. 3 is a longitudinal sectional front view of the main parts showing the operating state. 1... Conveyor, 2... Panel, 7... Frame, 12... Print roll, 14... Arm, 18
... Compression spring, 22 ... Drive roll.

[Claims]

1. A photothermal conversion recording medium characterized by containing an azulenium salt compound represented by the following general formula [], [] or []. general formula