JPH0136615Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an automatic stamping device that is inexpensive and has excellent functionality, and that applies ink to a stamp engraved with predetermined characters, figures, and symbols, and stamps multiple works in sequence. The present invention provides a stamping device.

Conventionally, in automatic stamping devices that sequentially stamp multiple works by applying solvent-vaporizing quick-drying ink to a stamp engraved with predetermined characters, figures, and symbols, It is not possible to control the change in the viscosity of the ink, and as time passes, the ink applied to the stamp becomes dry before it is stamped on the workpiece, and even if it is stamped on the workpiece, the stamped characters may not be etc. are faded,
Alternatively, there is a drawback that ink sediments due to drying of the ink adhere to the stamp and the stamp becomes clogged, making it impossible to perform stable stamping.

On the other hand, as mentioned above, in order to avoid the lack of stability during printing due to the volatilization of the solvent in solvent-vaporizing quick-drying inks, instead of solvent-vaporizing quick-drying inks, a resin material that is cured by ultraviolet rays is included. Automatic marking equipment using so-called UV ink has been implemented, but
This method requires an ultraviolet irradiation means to cure the UV ink after stamping, which has the disadvantage that the device becomes complicated and expensive.

This invention was made with the above-mentioned points in mind, and includes an ink reservoir filled with solvent-vaporizing quick-drying ink, and a fixed amount of solvent applied to the ink reservoir at fixed intervals by a controlled timer. a part for applying dripping solvent, a cover for preventing solvent volatilization that covers the ink reservoir part, a stamp that is attached to a horizontally movable mounting body so as to be movable up and down and is engraved with predetermined characters, figures, and symbols; Applying the ink in the ink reservoir to the entrance hole formed in the cover below the stamp when the mounting body has moved to one side, and the stamp that has moved downward into the cover from the entrance hole and entered the cover. The present invention provides an automatic stamping device comprising: a workpiece that is disposed below the stamp in a state in which the mounting body is moved to the other side and is stamped by the downward movement of the stamp.

Therefore, according to the automatic stamping device of this invention, a solvent dispenser part is provided that drips a certain amount of solvent into the ink pool part of the solvent volatilization type quick-drying ink at a certain time interval, and the solvent is applied to the ink pool part and the stamp. Since the ink application means is covered with a solvent volatilization prevention cover, the solvent contained in the quick-drying ink can be prevented from volatilizing, and the viscosity of the ink in the ink reservoir can be kept almost constant at all times. By preventing the ink from drying out, it is possible to prevent the characters, etc. being stamped from fading and to prevent ink deposits from adhering to the stamp, making it possible to easily perform precise and stable stamping. It becomes possible to perform continuous automatic marking for a long time using quick-drying ink, and it is possible to provide an automatic marking device that is inexpensive and has excellent functionality without providing an ultraviolet irradiation means as in the past.

Next, this invention will be explained in detail with reference to drawings showing one embodiment thereof.

In FIG. 1, 1 is a stocker supported by a dripping part holder 2 and filled with isopropyl alcohol solvent; 3 is a dispenser supported by the holder 2 and connected to the stocker 1; A timer causes a certain amount of solvent from the stocker 1 to be dripped from the dispenser 3 into the ink reservoir described below at regular intervals, and the stocker 1, dispenser 3, and the timer keep the ink viscosity constant. A solvent dripping section 4 is configured to maintain the solvent.

5 is a pedestal; 6 is a holder provided on the pedestal 5; 7 is a first spreading roller provided in the holder 6 and rotated by a drive mechanism including a motor;
8 is an adjustment plate provided in the holder 6, 9 is a first
An ink reservoir for solvent-vaporizing quick-drying ink formed by the roller 7, the adjusting plate 8, and side plates arranged before and after the first roller 7; 10 is a lower end portion of the adjusting plate 8 that moves the adjusting plate 8 up and down; An adjustment knob for adjusting the distance between the first roller 7 and the first roller 7 to adjust the thickness of the ink film from the ink reservoir 9 formed on the circumferential surface of the first roller 7; A first cylinder supported by a tool 12; 13 a holder attached to the shaft 14 of the first cylinder 11 and movable in the left-right direction; 15 a holder 1;
The second roller 15 is a second roller for transfer that is rotatably held by the second roller 15, and the circumferential surface of the second roller 15 is arranged so as to be in contact with the circumferential surface of the first roller 7, and the ink on the circumferential surface of the first roller 7 is The film is transferred to the circumferential surface of the second roller 15.

16 is a rotating ratchet mechanism mounted on the pedestal 5; 17 is a rotating plate disposed on the pedestal 5 and pivotally attached to the rotating shaft of the ratchet mechanism 16; Due to the movement of the second roller 15 to the right, the circumferential surface of the second roller 15
The ink film that contacts the upper surface of the second roller 15 and is transferred to the circumferential surface of the second roller 15 is further transferred to the upper surface of the rotating plate 17. An ink application means 18 is configured.

Reference numeral 19 denotes a cover for preventing solvent volatilization made of a transparent resin material that covers the holder 6, ink reservoir portion 9, and application means 18, and reference numeral 20 indicates an ink reservoir from a dispenser 3 transparently provided near the center of the upper left end of the cover 19. A passage hole for the dripping solvent to the part 9, 21 is a cover 19
This is an entry hole transparently provided at the right end of the upper surface, and is located below the stamp (described below) when the mounting body, which will be described later, moves to the left. It comes into contact with the upper surface of the rotating plate 17, and the ink on the upper surface of the rotating plate 17 is applied to the stamp.

22 is a fixed frame 23 provided on the pedestal 5
a second cylinder 24 supported by a frame 23;
Two guide rods in the left and right directions provided at the upper end; 25 is a mounting body attached to the shaft of the second cylinder 22 and movable in the left and right direction to the rod 24; 26 is attached to the mounting body 25; 27 is a third cylinder attached to the mounting body 25, 28 is a stamp holder attached to the shaft 29 of the third cylinder 27 and supported by the guide piece 26' of the guide body 26 so as to be movable in the vertical direction. , 30 is a stamp supported by a holder 28 and stamped with predetermined characters, figures, and symbols; 31 is a workpiece placed on a rotary table 32 and stamped with the stamp 30; 25 moves to the right, the stamp 30 moves above the workpiece 31, and as the third cylinder 27 operates, the stamp 30 moves downward and is stamped on the workpiece 31.

Incidentally, reference numeral 33 designates a buffer spring whose both ends are engaged with the lower surface of the guide piece 26' and the upper surface of the holder 28 for use when the holder 28 is moved downward.

Then, according to the timer, a certain amount of solvent is dripped into the ink reservoir part 9 from the dispenser 3 of the solvent dispensing part 4 at regular intervals, and the ink in the ink reservoir part 9 is kept at a constant viscosity, and the first roller 7
rotates to form an ink film of a predetermined thickness on the circumferential surface of the first roller 7, and then the ink film of the first roller 7 is transferred to the circumferential surface of the second roller 15 that is in contact with the first roller 7. At the same time, the holding body 13 moves to the right due to the operation of the first cylinder 11, and the second roller 15 comes into contact with the rotating plate 17, and the rotating plate 17 rotates and the ink film transferred to the second roller 15 is removed. Furthermore, it is transferred to the upper surface of the rotating plate 17, and the first cylinder 11
returns and the second roller 15 returns to the left.

Furthermore, after the ink film is transferred to the upper surface of the rotating plate 17, the holder 28 is moved downward by the operation of the third cylinder 27, and the stamp is placed on the ink film that has moved below the stamp 30 due to the rotation of the rotating plate 17. 30 come into contact with each other, ink is applied to the stamp 30, and the holder 28 moves upward due to the return of the third cylinder 27, and the stamp 30 returns to the standby position.
moves to the right, the stamp 30 moves above the workpiece 31, the holder 28 moves down by the operation of the third cylinder 27, and the stamp 30 comes into contact with the workpiece 31.
Stamping is performed, and as the third cylinder 27 and second cylinder 22 return, the holder 28 moves upward and the mounting body 25 moves to the left, and the stamp 30
returns to the standby position, and these operations are repeated to sequentially stamp a plurality of works.

At this time, the ink reservoir 9 is closed by the cover 19.
ink and each roller 7, 15 and rotating plate 17
This prevents the solvent contained in the ink film on the circumferential surface and the top surface from volatilizing, and the viscosity of the ink is kept almost constant by dropping a certain amount of solvent into the ink reservoir part 9 at certain time intervals by the solvent dispensing part 4. Because it drips, the ink applied to the stamp 30 does not dry out.
Stamp 3 may be caused by faded characters, etc. stamped on work 31, or by ink deposits caused by ink drying.
For example, as shown in Fig. 2, the outer diameter of the stamp 30 is about 13 mm.
It becomes possible to precisely and stably stamp more than 10 characters, symbols, figures, etc. on the workpiece 31 of about 100 mL.

Therefore, according to the embodiment, the cover 19
As a result, the ink in the ink reservoir 9, each roller 7,
It is possible to prevent the solvent contained in the ink film on the circumferential surface and the upper surface of the rotating plate 15 and the rotating plate 17 from volatilizing, and to keep the viscosity of the ink constant at all times by dropping a certain amount of solvent at a certain time using the solvent dispensing part 4. This makes it possible to prevent the ink applied to the stamp 30 from drying out, making it possible to easily make precise and stable stamps, as well as eliminating the need for ultraviolet irradiation means as in the past, making it inexpensive and It is possible to provide an automatic stamping device with excellent functionality.

[Brief explanation of the drawing]

The drawings show one embodiment of the automatic marking device of this invention, with FIG. 1 being a front view and FIG. 2 being a plan view of a stamped work. 4... Solvent suitable part, 9... Ink reservoir part, 18
... Application means, 19 ... Cover, 21 ... Entry hole, 25 ... Mounting body, 30 ... Stamp, 31 ... Work.

Claims (1)

[Claims for Utility Model Registration] An ink reservoir filled with solvent-vaporizing quick-drying ink; a solvent dispensing section that dispenses a fixed amount of solvent into the ink reservoir at fixed intervals using a controlled timer; A cover that covers the ink reservoir to prevent solvent volatilization, a stamp that is vertically movable and is engraved with predetermined characters, figures, and symbols on a mounting body that moves horizontally, and a state in which the mounting body has moved to one side. an entry hole formed in the cover below the stamp; an application means for applying ink from the ink reservoir onto the stamp that has moved downwardly into the cover from the entry hole; and the mounting body. an automatic stamping device comprising: a workpiece disposed below the stamp in a state in which the stamp has moved to the other side, and a workpiece to be stamped by the downward movement of the stamp;