JPS58147365A - Stamping method - Google Patents

Abstract

PURPOSE:To make it possible to carry out transfer sealing by arbitrarily changing over plural expressions, by a method wherein an encoded ink injected from a nozzle in an appropriately deflected state is applied to a transfer roller and the ink on the transfer roller is sealed on an object to be stamped under pressure. CONSTITUTION:Diodes 1 are intermittently issued from a diode supply part and supplied between slits 11c, 11c of a rotary drum 11 through a conveyor channel 13 while the drum is rotated to a direction by an arrow. On the other hand, to the peripheral surface 14b of a transfer roller rotated in synchronized relation to the rotary drum 11, predetermined encoded ink mist is applied from an ink jet apparatus 15 and each diode 1 on the rotary drum 11 and the encoded ink are contacted at a predetermined position while the diode main body 1a is rotated to transfer the ink on the peripheral surface of the transfer roller to the peripheral surface of said diode main body 1a. In the next step, the sealing completed diode 1 is taken out by an outtake lever 16 provided to the forward position of the rotary direction of the rotary drum 11.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stamping method, and particularly to a stamping method in which a plurality of displays can be arbitrarily switched and transfer stamping can be performed.

Figures 1 and 2 show an example of a device for stamping polarity display, model name, grade, loft number, etc. on electronic components such as diodes. 2 is a conveyor that positions and supports both ends of the diode l and conveys it intermittently; 8 is a transfer roller placed at a fixed position on the conveyor 2;
Reference numeral 4 denotes a mortar roller that prints stamp data on the peripheral surface of the transfer roller 8.Although not shown in the diagram, an ink supply roller that supplies a certain amount of ink to the mortar is connected to the mortar roller 4.

5 is the lead lb of diode 1 on both sides of conveyor 2,
A guide plate 6 is below the transfer roller 8 and moves up and down to guide the end of the component body 1a and position the component body 1a.
This is a support that supports parts b and lb, lifts the diode l from the conveyor 2, and presses the component body 1a against the peripheral surface of the transfer roller 8.

This operation will be explained below. Diode 1 on conveyor 2
is fed intermittently and is sent onto the support 6 while its position is regulated by the guide plate 5. When the component body 1a stops directly under the transfer roller 8, the support 6 is raised and the component body 1a is pressed against the transfer roller 8. The diode 1 is rotated in synchronization with the transfer roller 8, and the ink transferred by the mortar roller 4 on the circumferential surface of the transfer roller 8 is pressed onto the component body 1a to make a stamp.

After the stamping is completed, the support 6 is lowered, the diode 1 is returned to the conveyor 2, and the conveyor 2 is moved intermittently to send the next diode 1 directly below the transfer roller 8, and the above operation is repeated.

This position stamps the stamp data fixed on the mortar roller 4, so changing the stamp data requires replacing the mortar, and any data can be added in response to the diode that is continuously sent. could not be stamped. In addition, the transfer surface of the transfer roller 8 comes into pressure contact with the mortar and the object to be printed, so it is subject to severe wear and tear, and cleaning and replacement of the transfer roller 8 is complicated. Further, there is a problem in that if the amount of ink supplied varies, the stamp may be chipped or smeared, resulting in unclear display. In order to operate more efficiently, it is necessary to sort diodes in advance in order to continuously supply diodes with the same markings, and unmarked diodes must be stored between sorting and marking. Management was complicated and storage space was also required.

The present invention was proposed in view of the above-mentioned problems, and provides a stamping method that allows transfer stamping by arbitrarily switching the display.

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 8 and 4, as applied to a diode marking device.

In the figure, 11 is the component body 1a of the diode l on the surface.
A groove 11a is formed to accommodate the protruding walls 1 on both sides of the groove 11a.
11), 111) with leads lb at regular intervals in the circumferential direction,
A magnet 1 that forms a plurality of slits 11c for accommodating 11) and attracts leads lb, It) to the slit 1lcT portion.
It is a rotating drum with 2 embedded inside. 18 is a rotating drum 11
14 is a conveyance path of a diode supply unit (not shown) which cuts out and supplies diodes 1 one by one into the slits 11c and llc, and a rotating shaft 14a is arranged parallel to the rotating shaft II'd of the rotating drum 11. A transfer roller 16 contacts the component body 1a of the diode l on the rotating drum 11 at a predetermined position, and a transfer roller 15 appropriately deflects the ink mist ejected from the nozzle #15a by a deflecting means (not shown). The inkjet device encodes and adheres to the circumferential surface 14b of the transfer drum 14. Reference numeral 16 is a take-out lever that locks the leads lb, lb of the diode 1 at the front of the rotating drum 11 in the rotational direction and takes them out from the rotating drum 11.

This operation will be explained below. The diodes 1 cut out one by one from the diode supply section are supplied from the conveyance path 13 to between the slits llc, llc of the rotating dome 11 and rotated in the direction of the arrow shown in the figure. On the other hand, a predetermined encoded ink mist is deposited on the circumferential surface 14t of the transfer roller 4 rotating in synchronization with the rotating drum 11 by the inkjet device 15. The ink on the transfer roller circumferential surface 14a is transferred to the circumferential surface of the diode 1 by rotating the diode main body 1a.

Then, the diode 1 that has been stamped is lead lb to the take-out lever at the front of the rotary drum 11 in the rotational direction.

lb is locked, becomes free from the attraction force of the magnet 12, and is taken out.

According to this, the necessary code can be continuously switched and stamped depending on the grade of diode 1 supplied from the diode supply section, so a wide variety of diodes can be stamped continuously at high speed, no sorting and storage is required, and management is easy. There is also no need for storage space. Furthermore, since the transfer roller 14 mechanically contacts only the diode 1, there is less wear and tear, and inspection and maintenance work such as cleaning and replacement is reduced. In addition, since a fixed amount of ink is supplied, the stamp can be clearly displayed without chipping or smearing. In addition, when printing directly from an inkjet device, glass-sealed diodes not only make it difficult to obtain cylindrical and homogeneous markings, but also cause the ink to be repelled, making the display unclear. FIG. 7 shows another embodiment of the stamping device to which the present invention is applied, in which the same reference numerals as in FIG. 2 indicate the same parts and the explanation will be omitted. In this embodiment, it is possible to stamp a plurality of codes. Reference numeral 17.1B is a first and a second disc having holes 17a and 18a formed at regular intervals on a concentric circle on the outer periphery. The first disc 17 is fixed to the rotating shaft 11a of the rotating drum 11, and the second disc 18 is fixed to the rotating shaft 14a of the transfer roller 14. 19
．． 20 are first and second sensors for detecting the holes in the first and 20th disks 17 and 18, respectively; 21 and 22.28 are the first and second sensors;
The nozzles of the second and eighth inkjet devices are arranged on the circumferential surface 14b of the transfer roller 14 at predetermined intervals in the axial direction. 24 is a rotating drum, transfer rope, etc. depending on the grade and type of diode supplied from the diode supply section.
A control unit that controls the operation of the first to eighth ink shed devices 21, 22, and 28, 25 is a memory that stores display data required for each diode supplied from the diode supply unit, and 26 is a memory that stores display data required for each diode supplied from the diode supply unit. It shows a calculation processing unit that controls the rotation of the rotary drum 11 and the transfer roller 14 based on data from the second sensor 19.20 and the memory 26, and controls the first to third inkjet devices 21.22.28. .

This operation will be explained below with reference to FIGS. 8 to 12. That is, the slits 11 K, 11 y, 11 Z of the rotating drum 11 when the same display is performed continuously.
- and the stamping surfaces 14x, 14y, 142 of the transfer roller 14.
The positional relationship between... is shown in Figure 4. Assume that the first diode 1x is displayed as ABC, and the second and eighth diodes as 17%IZ are respectively displayed as DKF%GH. First, the first sensor 19 detects that the first diode IX has come two positions behind the stamping position as shown in FIG. 8, and at this time the memory 25 displays AB
C is read out, and based on this data, the arithmetic processing unit 26 rotates the rotating drum 11 and the transfer roller 14 synchronously,
As shown in FIG. 9, when the first diode lx is one position behind the stamping position and the second diode 1y is two positions behind the stamping position, the arithmetic processing section 26 controls the rotating drum 11 and the transfer roller 14. ABC is displayed on the circumferential surface of the transfer roller 14 by an inkjet device 21°22.28 while rotating in synchronization. At the same time, the display D118F is read out from the memory 25, and based on this data, the arithmetic processing unit 26 sets the number of holes detected by the second sensor 20 at a position that is, for example, 8 less than the reference number, so that the inkjet device 21. DKF' is displayed on the circumferential surface of the transfer roller 14 at steps 22 and 28. and the top diode lx
When the display ABC is stamped, the diode 12 of 1 is two positions behind the stamping position, reads the display GH from the memory 25, and the arithmetic processing unit 26 stores the previous data (
The rotation of the rotating drum l'l is accelerated or the rotation of the transfer rope 14 is delayed based on the display nEy ), and the display DKF on the transfer loaf 14 and the diode 1y on the rotating drum ll are changed at the printing position as shown in FIG. control so that they match and maintain a constant speed. Also, the calculation processing unit 2622.2
Do not activate B. At this time, the second diode ly has completed printing as shown in FIG. At this position, the GH process is displayed on the circumferential surface of the transfer roller 14 by the ink shed device 21.22.2B. And 2 from the stamping position
At the same time as reading out the display data of the diode 1 that came after the position transfer from the memory 25, the arithmetic processing unit 26 delays the rotation of the rotary drum 11 or slows down the rotation of the transfer roller 14 based on the previous data (display GH function). Control is performed so that the display G) I on the transfer roller 14 and the diode Iz on the rotary drum 1.1 coincide with each other at the printing position and maintain a constant speed.

By repeating the above operations, it is possible to print a plurality of codes continuously.

Note that the present invention is limited only to the above-mentioned embodiments. For example, the inkjet device t6.21.22.2B uses a stationary roller in order to form a distortion-free code on the circumferential surface of the rotating roller 14. The ink may be deflected by pre-distortion so as to have a distorted sign, or the deflection means for deflecting the ink may be tilted with respect to the axis of the rope. Further, if a cleaning device for cleaning the peripheral surface of the transfer roller 14 after stamping is provided, the control section 24 in the embodiment shown in FIG. 5 is unnecessary. Furthermore, it goes without saying that the present invention is applicable not only to diodes but also to printing by transfer in general.

As described above, according to the present invention, it is possible to change the display as desired and to imprint the transfer stamp, and it is possible to continuously stamp different name displays.

[Brief explanation of drawings]

FIG. 1 is a side view showing an example of a conventional marking device, FIG. 2 is a sectional view taken along line A-A in FIG. 1, FIG. 8 is a side view showing an embodiment of a marking device according to the present invention, and FIG. Fig. 8 BB sectional view,
FIG. 5 is a side view showing another embodiment of the marking device according to the present invention, FIG. 6 is a sectional view taken along line C-C of FIG. 6, and FIG.
-D side view and FIGS. 8 to 12 are side views of essential parts for explaining the operation of the apparatus shown in FIG. 5. 1... Material to be imprinted, 14... Transfer roller, 15.2N, 22.28... Nozzle lv (
inkjet equipment). 2 A-1 21st/l Figure 3

Claims (1)

[Claims] A stamping method characterized in that ink ejected from a nozzle, appropriately deflected and encoded is deposited on a transfer roller, and the ink on the transfer roller is pressed onto an object to be stamped to make a stamp.