JPS61295068A - Automatic printing apparatus - Google Patents

Abstract

PURPOSE:To make it possible to always efficiently perform printing at the proper position to a member to be printed, by controlling the titled apparatus by the position detection signal of the member to be printed having reached a printing position and the speed detection signal of the preceding member to be printed. CONSTITUTION:Before the feed of a strip like sheet 1 to the direction shown by an arrow A is started, it is preset what number is a mark 3 to be counted in a speed sensor 6. When the feed of the strip like sheet 1 is started, the speed sensor 6 starts to count the number of marks and detects this count pulse to send the same to a control unit 7. In almost synchronous relation to this, a position sensor 5 detects the mark 3 passed. The control unit 7 stands by in order to judge whether the peripheral speed of the strip like sheet 1 is always constant and controls said peripheral speed on the basis of the detection signals from the sensors 5, 6 and the operation order by this control signal is applied to the drive motor 9 in the side of a printing mechanism 8.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an automatic stamping device for stamping a date or the like on the surface of a packaging member.

(Prior art) Conventionally, in this type of device, in order to stamp a date, etc. on a product, a belt-shaped sheet, which is the material of the member to be stamped, is sent in a predetermined direction by a transmission mechanism consisting of a pulley, sprocket, etc. Stamps are continuously made by a marking member such as a rubber stamp that slides on the surface of 1 and rotates at a predetermined circumferential speed.

(Problems to be Solved by the Invention) However, in the case of such a conventional device, since the marking member is configured to be rotated by friction with the band-shaped sheet 1, slippage due to the material of both members is caused by the same dirt floor. occurs,
If there is a deviation in the desired circumferential speed or if the member elongates, etc., there is a problem in that the seal is not stamped at the predetermined stamping position and the misalignment of the stamp continues continuously thereafter. .

SUMMARY OF THE INVENTION Therefore, the present invention has been made to solve the conventional problems described in (-), and aims to provide an automatic stamping device that can efficiently stamp stamps at appropriate positions on stamped members at all times. It is said that

(Means for Solving the Problems) In order to achieve the above object, an automatic stamping device according to the present invention includes a feeding member that feeds a belt-shaped sheet in which a plurality of stamped members are connected in a predetermined direction, and a a position detection means for detecting the stamped member that has reached the stamping position; and a position detection means for counting the number of preceding stamped members at which stamping is to be started as a pulse signal, and detecting the speed of the preceding stamped member. a speed detection means, a control unit that controls a detection signal from the position detection means and a detection signal from the speed detection means, and a control unit that operates in synchronization with the rotation of a drive motor driven by the control signal from the control unit. a stamping mechanism that sequentially stamps each of the stamped members;
It is equipped with

(Example) Hereinafter, an example of an automatic sealing device according to the present invention will be described with reference to the drawings.

In Figures 1 and 2, numeral 1 is a band-shaped sheet of manufacturing material for a stamped member used as a product packaging material on which a date, etc. is stamped, and as shown in Figure 2, it corresponds to stamped characters 2. After the seal is stamped, it is press-cut into the defined sizes and sent to the product packaging process. 3 in the figure is a mark displayed at each image growth stage. Further, 4a and 4b are both winding support shafts (feeding members) for the belt-shaped sheet 1 that is fed in the direction of arrow A. 5 is a position sensor (position detection means) such as a phototube or photocoupler that detects the position of the mark 3; 6 is a roller 6a that rotates while sliding on the surface of the strip sheet 1; It is a speed sensor (speed detection means) using a low-resolution encoder, etc., which detects the
The detection signal from is sent to the control unit 7 and controlled. Moreover, 8 is a marking mechanism provided correspondingly to the surface of the belt-shaped sheet 1 on the downstream side of both sensors 5.6.

The marking mechanism 8 includes a drive motor 9, such as a stesovisog motor or a servo motor, which is rotated by a control signal from the control unit 7, and a marking mechanism to which the rotation of the drive motor 9 is transmitted via a transmission belt 10. roller 11
The stamping member 12 is attached to the circumferential surface of the stamping roller 11 and stamps a predetermined stamp character at a predetermined position on the belt-shaped sheet 1.

Next, the operation of the embodiment -F will be explained.

Before the belt-shaped sheet 1 starts to be fed in the direction of arrow A,
The number of marks 3 to be counted from in the speed sensor 6 is set in advance. When the feeding of the belt-shaped sheet 1 is started, the speed sensor 6 starts counting the number of marks, detects this counting pulse, and sends it to the control unit 4. Almost in synchronization with this, the position sensor 5 detects the passing mark 3. The control unit 7 is on standby to determine whether the circumferential speed of the strip sheet 1 is always constant, and controls this based on the detection signals from each sensor 5.6. An operation command is given to the drive motor 9 on the stamping mechanism 8 side.

That is, an instruction is sent from the control unit 7 to indicate how many marks 3 must pass before the drive motor 9 starts operating and the stamping roller 11 starts stamping based on a detection signal from the speed sensor 6. It controls whether the circumferential speeds of the belt-shaped sheet 1 and the stamping roller 11 match each other, and further, the stamping roller 11 is properly positioned at a predetermined defined position on the belt-shaped sheet 1 based on a detection signal from the position sensor 5. Controls whether or not it is compatible.

As a result, the device of this embodiment can flexibly respond to these types of changes, compared to conventional mechanical devices that have difficulty responding to changes in the stamped characters 3, such as reassembling the entire mechanism. can.

In addition, it is also possible to replace the stamping mechanism 8 in the above embodiment with a press punching mechanism and apply the embodiment to a press processing device that cuts the band-shaped sheet 1 after it is stamped.

(Achievements of the Invention) As can be understood from the above, the automatic marking device according to the present invention can prevent misalignment between the marking member and the member to be stamped caused by a difference in relative circumferential speed between the two members. Is it possible to adjust automatically and do misalignments occur? If you do so, you can reduce the price and get an accurate stamp.''

[Brief explanation of drawings]

Figure 1 and Figure 2 are general structural diagrams showing one embodiment of the automatic stamping device according to the present invention, and a perspective view of the manner in which characters are stamped on a band-shaped sheet that is a member to be stamped. . 1... Band-shaped sheet with a continuous stamped area 3... Position marks 4a, 4b... Winding support shaft (feeding member) 5... Position detecting means 6... Speed detecting means 7 . . . Control unit 8 . . . Stamping mechanism 9 . . . Drive motor 11 . . . Stamping roller

Claims (1)

[Claims] A feeding member that sends a belt-shaped sheet in which a plurality of stamping members are connected in a predetermined direction, a position detection means for detecting the stamping member that has reached a stamping position in the predetermined direction, and the stamping member that starts stamping. a speed detecting means for counting the number of preceding ones as a pulse signal and detecting the speed of this preceding stamped member; and controlling a detection signal from the position detecting means and a detection signal from the speed detecting means. It is characterized by comprising: a control unit; and a stamping mechanism that operates in synchronization with the rotation of a drive motor driven by a control signal from the control unit to continuously stamp each of the stamped members. automatic marking device.