JPS6123400Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fixed position printing device.
BACKGROUND ART Devices that repeatedly and continuously print letters and codes such as product names on the outer surface of steel materials, steel pipes, etc. along the entire length in the longitudinal direction have already been put into practical use. However, with conventional printing devices, the first
As shown in the figure, the printing positions are uneven, and when you try to print on an indicia etc. later, it takes extra effort to move in the direction of the arrow → to align the positions, and you also have to adjust the positions when printing multiple times. It took time.

Therefore, the purpose of this invention is to provide a fixed-position printing device that can align the starting position of printing at a constant level, and can appropriately perform multiple printing even if another seal is required after the first printing, thereby improving the product value. It is to provide. According to this invention, a conveyance line for steel materials and steel pipes includes a transfer roller that transfers the steel materials and steel pipes that are to be printed, a transfer roller that prints predetermined characters on the steel materials, and a position corresponding to the printing start point on the drive end of the rotating shaft. It is possible to control intermittently the transmission of driving force to the printing roller provided with the identification mark and the rotating shaft drive end of this printing roller, and has a detection part for the identification mark, and the position of the identification mark is the printing start point. a printing roller starting point fixed position return mechanism that transmits driving force to the rotating shaft until The fixed-position printing mechanism is capable of intermittent control and a printing roller drive mechanism that transmits driving force to the rotary shaft in synchronization with the transfer roller when the steel detection mechanism detects steel. It performs fixed position printing.

This will be explained below with reference to the embodiments shown in the drawings. FIG. 2 shows the mechanism of an embodiment of the fixed position printing device according to this invention. At a predetermined position above the transfer roller 1, there is a transfer roller 1, and a printing roller 2 having a rotation axis parallel to the rotation axis.
Above the printing roller 2, a transfer roller 3 is provided which has a rotating shaft parallel to the rotating shaft and rotates in contact with the printing roller 2. The character transfer roller 3 is a relief plate of printed characters, and the print roller 2 that rotates in contact with the character transfer roller 3 is formed of a rubber roll. The printing roller 2 rotates while contacting the printing object transferred onto the transfer roller 1. Ink is appropriately supplied to the transfer roller 3, and the letterpress letters on the transfer roller 3 are transferred to the steel material 4 of the printing target by the printing roller 2.
transcribed into.

The printing device of this embodiment is provided with a printing roller drive mechanism. The printing roller drive mechanism includes a first clutch 5 attached to the rotating shaft 15 of the printing roller 2, and an optional motor 6 connected to the first clutch 5 by a power transmission mechanism such as a belt or chain. The optional motor 6 is connected to a control box 7, and the control box 7 drives the motor 6 in synchronization with the feeding of the printing object. The first clutch 5 is an electromagnetic clutch that is controlled intermittently by a control box 7, and is connected to the rotation shaft 15 of the optional motor 6.
Power transmission is interrupted and interrupted at appropriate times. Photo masters 8 and 8' are arranged at positions on both sides of the steel material 4 moving on the transfer roller 1,
Each photo master 8,8'
It is connected to a control box 7 via a master amplifier 9. Photo Master 8,
When the light between 8' and 8' is blocked, a steel material 4 detection signal "1" is sent from the photo master amplifier 9 to the control box 7, and when it passes, a "0" signal is sent.

The printing roller starting point return mechanism further includes a control box 7 on the shaft 15 of the printing roller 2.
A second electromagnetic clutch 10 which is controlled intermittently is installed, and a reflective mark is installed at a position corresponding to the starting point of the printing roller 2 on the inner ring of the second clutch 10.
Reflective mark detection sensor 1 installed on the side of the inner ring
1 and a drive motor 12 connected by a power transmission mechanism. The output of the sensor 11 is connected to the control box 7, and when the reflective mark reaches the position of the detection sensor 11, a detection signal "1" is sent to the control box 7. The drive motor 12 is also connected to the control box 7, and the drive motor 12 is controlled by the control box 7.

Here, the drive motor 12 is constituted by a pulse motor or the like because it is necessary to accurately locate the print roller 3, and a cooling fan 13 separate from its rotation shaft is attached. The fan drive section 14 is connected to a control box 7 and is driven and controlled by the control box 7. The height of the transfer roller 3 and the print roller 2 from the transfer roller 1 can be adjusted according to the height and diameter of the object to be printed, and the printed characters can be changed by replacing the transfer roller 3.

According to this embodiment, control box 7
A signal is sent from the drive motor 12 to the drive motor 12.
drive the rotation. The control box 7 further connects a second electromagnetic clutch 10 to transmit the rotation of the drive motor 12, which rotates the printing roller 2 and also rotates the transfer roller 3 which is in contact with the printing roller 2. When the reflective mark on the inner race of the clutch is located in front of the sensor 11, the sensor 11 detects this and sends a "1" signal to the control box 7. Upon receiving the "1" signal, the control box 7 immediately stops the drive motor 12, stops driving the printing roller 2 and the transfer roller 3, and returns the printing start position of the printing roller 2 to the normal position, Disconnect clutch 10. The control box 7 controls the fan drive section 1 while the drive motor 12 is being driven.
4 to rotate the fan 13 and drive motor 1.
The performance of the motor 12 is stabilized by cooling the motor 2. Further, the fan 13 is mechanically independent from the drive motor 12, and eliminates the influence of inertia when starting and stopping the drive motor 12, thereby stabilizing the performance of the motor 12. Transfer roller 1 transfers steel material 4 to be printed.
When it is carried in and reaches between the photo masters 8 and 8', it is detected, and a "1" signal indicating detection is sent to the control box 7 through the photo master amplifier 9. The control that received the signal
The box 7 drives the optional motor 6, connects the first clutch 5, and rotates the printing roller 2 to perform printing. When the steel material 4 passes through the photo masters 8 and 8' and the interrupted light between the photo masters 8 and 8' is restored, the photo master amplifier 9 sends "0" to the control box 7 indicating that there is no object.
Send a message. Upon receiving the "0" signal, the control box 7 stops the option motor 6 to stop printing, then starts the drive motor 12 and uses the printing start position home position return mechanism to start the printing roller 2. . As shown in FIG. 3, the printed steel material or the like can be printed from a predetermined position. In addition, after printing a predetermined character as shown in Fig. 4, the transfer roller 3 is replaced to print other characters, etc., multiple times, or to print a new stamp b, etc. as shown in Fig. 5. can. In either case, printing can be performed reliably from a predetermined position on the steel material, etc., and no misalignment or overlapping occurs.

The fixed position printing device according to the present invention is as described above, and can provide the following effects. The object to be printed can always be printed from a fixed position, multiple printing or seal printing can be performed later without misalignment or overlapping of characters, the printing is orderly and looks good, and the product value is improved.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing a conventional example, Fig. 2 is an apparatus system diagram showing an embodiment of the present invention, Fig. 3 is a diagram showing an example of printing by the fixed position printing device of this embodiment, and Fig. 4 is a diagram showing multiple printing. FIG. 5 is a diagram showing a case where a seal is applied after printing a predetermined character. 1... Transfer roller, 2... Print roller, 3...
Transfer roller, 4... Steel material, 5... First clutch,
6...Option motor, 7...Control box, 8, 8'...Photo master, 9...
...Photo master amplifier, 10...Second clutch, 11...Sensor, 12...Drive motor,
13...Fan, 14...Fan drive section, 15...
...Print roller shaft.

Claims (1)

[Scope of utility model registration request] A transfer roller that transfers steel materials in a steel material conveyance line, a printing roller that prints predetermined characters on the steel material and is provided with an identification mark at a position corresponding to the printing start point on the drive end of the rotating shaft, and the printing roller. a printing roller that is capable of intermittent control of transmission of driving force to the rotary shaft drive end, has a detection section for the identification mark, and transmits the driving force to the rotary shaft until the position of the identification mark becomes a printing start point; a point position return mechanism; a steel material detection mechanism that detects the steel material transferred by the transfer roller; and a steel material detection mechanism capable of intermittent control of driving force transmission to the rotary shaft drive end of the printing roller; a printing roller drive mechanism that transmits a driving force to the rotating shaft drive end in synchronization with the transfer roller when the rotation shaft drive end is detected.