JP5729813B2 - Stamping equipment - Google Patents

Description

  The present invention relates to a stamp device that is effective in preventing consumption due to volatilization or evaporation of ink.

In recent years, the traceability of processes has been tightened and subdivided from the viewpoint of emphasizing quality control even in production sites for manufacturing products and parts.
Accordingly, it is required to print the lot number, the date of manufacture, the date of processing, the mold, etc. on the part itself in the production line of products and parts.
As described above, as a method for directly printing (stamping) a part or the like, water-soluble ink is slow to dry and has a problem in workability. Therefore, highly volatile ink using a solvent called so-called immortal ink is used. .
However, when highly volatile ink is used, the life of the ink pad is short, and there is a problem that the ink pad must be frequently replaced.
Therefore, Patent Document 1 discloses a technique in which a printing plate in which a sealing lid is stacked on the opening of an ink pad is inserted, and Patent Document 2 discloses a technique in which the printing surface is covered with a cap surface and the cap portion is opened at the time of printing.
However, the ink volatilization prevention techniques disclosed in these documents have a complicated structure, and the volatilization prevention of the ink is still insufficient.

JP-A-11-58911 JP 2007-105950 A

  SUMMARY OF THE INVENTION An object of the present invention is to provide a stamp apparatus that has a high sealing property for an ink case when not stamped, can easily separate a stamp plate from the ink case when stamped, can be easily stamped, and can absorb irregularities on the surface to be printed.

The stamp device according to the present invention includes an ink case that includes an ink pad and has an opening toward the bottom, and a stamper that reverses in the vertical direction while sliding in the vertical direction relative to the ink case. On the side, there is a switching magnet that can be switched ON / OFF of the magnetic force, and when it is not stamped, the switching magnet is in the ON state, so that the stamping part of the stamper and the ink case opening part are magnetically used. and sheet Lumpur between, the time stamping has a switching means for switching so that the switchable magnet is in a state OFF, the stamper is lowered reversed after said switchable magnet is turned OFF, the seal to the seal face It is one that, a holder which houses the pre-Symbol ink case and switchable magnet, the stamper vertically reversible slide supported by the holder That has a reversing device, said inverting device is elastically biased in a protruding direction, condensation of the said opening by the magnetic force of the switchable magnet in a state in which the seal site stamper is inserted into the opening of the ink case The diameter of the seal is in contact with the periphery of the marking part, the rotary magnet has a rotating gear on the ON / OFF switching rotary shaft, the holder has an operating gear that rotates the rotating gear by a predetermined angle, and the holder is covered. When pressed toward the marking surface, when the reversing tool is relatively lifted, the operating gear rotates the rotating gear so that the switching magnet is turned off.
Here, the vertical direction of the stamping device is expressed in a state where the stamping device is pressed from above against the surface to be marked such as a component and is stamped.
Accordingly, when marking is performed in the horizontal direction, the vertical direction corresponds to the horizontal direction.

In the present invention, the ink case refers to a case in which ink is stored in a state where it is adsorbed to a pad-like absorbent member or the like, and is in a sealed state except for an opening portion through which a stamped portion of the stamper enters and exits.
A switching magnet is a magnet that can be switched between an ON state and an OFF state in which a magnetic force is generated between the counter electrodes by changing the direction of the magnet, for example, by providing a magnet or the like inside the magnetic material that serves as the counter electrode. Say.
Here, the holder having the ink case and the magnet, and a reversing tool that slides and supports the stamper in a vertically reversible manner, the reversing tool is elastically biased in the protruding direction, When the marking part is inserted in the opening of the ink case, the diameter of the opening is reduced by the magnetic force of the magnet so that the seal comes into contact with the periphery of the marking part and rotates on the ON / OFF switching rotary shaft of the switching magnet. The holder has an operating gear for rotating the rotating gear by a predetermined angle. When the holder is pressed toward the surface to be marked, the operating gear rotates the rotating gear when the reversing tool is relatively raised. By doing so, the switching magnet may be turned off.
In addition, a structure may be employed in which a magnetic material such as an iron plate is provided on the stamp plate forming the stamp portion, and the seal plate is attracted to the opening of the ink case by the magnetic force on the ink case side by an ON-OFF switching magnetic force.

In the present invention, the mechanism for reversing the stamper closes the opening of the ink case when the stamping part of the stamper is facing upward, reverses when the stamping is performed, and abuts against the surface to be printed such as parts. Any mechanism may be used as long as it is expressed upside down for the sake of convenience in this specification, but the direction of the opening of the ink case and the imprinted portion at the time of imprinting may be reversed in the horizontal direction, In addition, for example, there is one that rotates by a predetermined angle such as a right angle direction and switches between a state in which the opening of the ink case is closed and a stamped state.
As a reversing mechanism consisting of a simple structure, the vertical reversing mechanism has a reversing tool that moves up and down along the holder, the reversing tool has a rotating groove and a guide groove for reversing the stamp around the rotating pin, The stamping device may have a rotating pin holding groove having a vertically long hole for moving the rotating pin up and down and a guide pin moving up and down along the guide groove.

Depending on the shape of the part, the surface to be marked is not necessarily flat but often has an uneven surface.
Therefore, in the present invention, the tip part is brought into contact with the surface to be imprinted before the marking, and the plurality of sliders for detecting receding of the unevenness of the surface to be imprinted and the difference in the amount of retreat between the plurality of sliders are inclined. It is preferable to have a top and provide a marking portion on the top surface of the top, and it is further preferable that the marking portion is composed of a plurality of divided marking plates, and each marking plate is supported by the top.

In the stamp device according to the present invention, the magnet provided on the ink case side is turned on when the opening portion of the ink case is closed by the stamping portion when the stamping is not performed, and the stamping portion of the ink case is strongly strengthened by magnetic force. Since it is pressed at the opening, the sealing performance is high.
If a strong seal is made by using the magnetic force of the magnet in this way, it is difficult to reverse the stamp at the time of stamping.
Therefore, in the present invention, the magnet is turned off in accordance with the operation of pressing the holder at the time of stamping.
As a result, when not printing, if the opening of the ink case is sealed by the magnetic force of the magnet and the holder is lowered for printing, the magnetic force is turned off in conjunction with the movement, and the printing plate may be damaged. It can be easily stamped.

The structural example of the stamp apparatus which concerns on this invention is shown. The operation | movement figure of a stamp apparatus is shown. The internal structure of the holder is shown. The ON-OFF operation of the magnet is shown. An example of the structure of the stamp is shown. Indicates the movement of the slider and frame. The top spring mechanism is shown. Indicates the movement of the seal. The other example of a sealing mechanism is shown.

An example of the structure of the stamp apparatus according to the present invention is shown in FIG. 1, and the marking operation is shown in FIG.
The stamp device includes a holder 10, a reversing tool 20, a stamper 30, and an ink case holder 40.
The stamping device 30 is incorporated inside the reversing tool 20 so as to be reversed in the vertical direction.
Further, the stamp 30 is stored inside the holder 10 in a state of being set inside the reversing tool 20.

As shown in FIGS. 1 to 3, the stamper 30 has a printing mechanism including a drum 33 and a belt 34 held between sliders 36 shown in FIG. 5 inside guide plates 31 on both sides.
A guide pin 31a that moves up and down along the guide groove 21 of the reversing tool 20 on the outside of the guide plate 31 and a rotating pin holding groove 31b in the shape of a recess groove that slidably holds the rotating pin 22 provided on the reversing tool side. Have

Inside the slider 36 on both sides of the stamper, there is a rotatable drum 33 and a top 37 that can be tilted to the tip, and a belt 34 to which a stamp plate 32a is attached at predetermined intervals.
In the present embodiment, three belts 34 are provided, but the number is not limited.
The slider 36 is urged in a protruding direction by a spring 36e and is supported by a guide pin 31a and a connecting pin 35 inserted through the long holes 36c and 36d so as to be slidable in the vertical direction.
The slider 36 has a detection portion 36a that comes into contact with the surface to be printed before the marking plate, and the support pins 38a of the top 37 are supported by the support holes 36b provided in the left and right sliders 36.
In the frame 37, support pins 37d are alternately inserted in the front and rear in the support holes 36b provided in two front and rear positions so that adjacent frames do not interfere with each other in FIG.
As shown in FIGS. 6 and 8 (b), the support pin has a concave and convex shape on the surface to be marked Wa so that the detecting portion 36a of the slider 36 moves backward, so that the top 37 is inclined according to the difference in the backward movement amount. Allow.
Note that the top 37 according to the present embodiment is not only tilted left and right according to the protrusion amount of the detection portions 36a of the sliders 36 on both sides as described above, but can be tilted in the front-rear direction, and the entire top is completely It can move up and down.
As shown in FIGS. 5 to 7, a support hole 38 is provided in the support body 39 and a support pillar 38 that slides in the vertical direction is disposed therein, and the bottom of the support pillar 38 is elastically biased by a spring member 38 b in the protruding direction. In addition, a support pin 38a is provided on the front end side of the support column, and a stamp plate support piece 37a is supported on the front end portion of the support pin 38a so as to be capable of tilting in the left-right and front-back directions.
The stamp plate support piece 37a is pivotally attached to the base piece 37b on a pivot shaft 37c in the left-right direction, and the base piece 37b is pivoted on a pivot shaft 37e in the front-rear direction.
The left and right sliders 36 are urged in the projecting direction by a spring member 36e provided on the support 39 so as to be independently slidable in the vertical direction.
As a result, as shown in FIG. 8B, the entire frame 37 moves backward while being urged by the spring member 36e in accordance with the protrusion amount of each slider 36 so as to absorb the unevenness of the workpiece marking surface Wa, and the right and left Further, since the printing part 32 is inclined in the front-rear direction, the printing part 32 is pressed in a state perpendicular to the surface to be printed, so that the printing is beautiful.

Next, a structural example of the ink case holder 40 will be described.
As shown in FIG. 1, an ink case holder 40 is housed inside the holder 10 in a state in which it is elastically biased in the protruding direction by a main elastic member 12 such as a spring member.
The reversing tool 20 is disposed while being elastically urged in the protruding direction by the secondary elastic material 13 a disposed on both sides of the ink case holder 40.
In this embodiment, as shown in FIG. 3, the auxiliary elastic member 13a has a guide support mechanism including shafts 14a and 14b and cylindrical portions 15a and 15b in which the shafts 14a and 14b slide inward. It is elastically biased.
As shown in FIG. 4, the ink case holder 40 has a pair of seal movable parts 44a and 44b that open and close in the front-rear direction (left and right direction in FIG. 4), and an opening inside the pair of seal movable parts 44a and 44b. In addition, an ink case 41 is provided in the part, and a switching magnet 42 is provided on the rotating shaft side of the seal movable part.
The switching magnet 42 is provided with a space therein, and a switching element 42 a such as a magnet is supported on the rotating shaft 42 b and is rotated by the rotating gear 43.
In the state of FIG. 4A, the magnetic force of the switching element 42a is transmitted to the pair of seal movable parts 44a and 44b, the N pole and the S pole attract each other, and the ink pad 41b is provided in the ink case. The seal 32a inserted into the opening 41a of 41 is pressed and sealed directly or through the opening 41a to prevent the ink from volatilizing from the opening 41a.
As shown in FIG. 2A, when the tip of the reversing tool 20 is brought into contact with the surface to be marked and the holder 10 is pressed downward, the operating gear 16 provided inside the holder 10 rotates the rotating gear 43, and the switching element. 42a rotates, and the magnet is switched from the ON state to the OFF state.
On the other hand, of the pair of seal movable parts 44a and 44b, one seal movable part 44b has a lock member 45, and this lock member projects by a spring member 45b toward the lock hole 17 provided on the holder side. The seal movable part 44b is locked by the lock pin 45a.
The lock pin 45a is connected to a lock release lever 45d by a wire 45c. The lock operation part 16a provided inside the holder is lowered to rotate the rotation gear 43 and rotate the lock release lever 45d downward. By moving, the lock pin 45a is immersed, and the magnetic force of the seal movable part 44b is turned off and opened.
In this state, since the seal pressure of the ink case opening 41 a is released, the ink case holder 40 moves backward while being urged by the main elastic member 12.
As shown in FIGS. 2A and 2B, the guide pin 31a of the stamping device rises relatively with respect to the holder 10 by an allowable range along the substantially L-shaped guide pin support portion 11 on the holder side. As a result, the stamping portion 32 of the stamper 30 is separated from the opening 41a of the ink case.
When the guide pin 31a reaches the arc portion 21b from the straight portion 21a of the guide groove 21 as shown in FIG. 2B, the stamper 30 starts to reverse, and when further pressed, the guide pin 31a moves along the stamping straight portion 21c. Move down and stamp on the surface.

FIG. 9 shows another example of the seal structure.
When the magnet is turned on by attaching the magnetic force generating piece 44 instead of providing the above-mentioned seal movable part on the switching magnet side and providing the stamp plate 32a on the stamp 32 side or the iron piece 32b on the back side of the stamp plate 32a, the iron piece 32b The seal 32 is sucked into the opening 41a of the ink case 41 and sealed.
As shown in FIG. 9B, the switching element 42a rotates from this state, and when the position of the pole changes to about 45 ° level, the switch 42a is turned off, the N and S poles disappear, and the attracting force by the magnetic force is generated. Disappear.
In the present embodiment, the rotating gear 43 is attached coaxially with the rotating shaft of the switching element 42a, and the operating gear 16 is attached to the holder 10, so that the magnet is turned on and off by the relative movement between the reversing tool 20 and the holder 10. Although switching is possible, it is not limited to this structure.
Further, in this embodiment, an ink case having an opening is provided between the north pole and the south pole of the switching magnet, but the marking part and the ink case are sealed by pressing or suction by magnetic force. If it is a thing, it is not limited to this structure.

DESCRIPTION OF SYMBOLS 10 Holder 11 Guide pin support part 12 Main elastic material 13a Secondary elastic material
16 Actuating gear 17 Lock hole 20 Reversing tool 21 Guide groove 21a Straight part 21b Arc part 21c Marking straight part 22 Rotating pin 30 Stamping device 31 Guide plate 31a Guide pin 31b Rotating pin holding groove 32 Marking part 33 Drum 34 Belt 35 Marking part 36 Slider 37 Top 40 Ink case holder 41 Ink case 41a Opening portion 42 Switching magnet 42a Switch 43 Rotating gear 44a Seal movable portion 44b Seal movable portion 45 Lock member 45a Lock pin

Claims (3)

An ink case with a built-in ink pad and an opening facing downward;
A stamp that reverses in the vertical direction while sliding in the vertical direction with respect to the ink case,
On the ink case side, there is a switching magnet that can be switched on and off of magnetic force,
In a state where no seal, and sheet Lumpur between the seal portion and the ink case the opening of the stamper using the magnetic force by the switchable magnet is in a state to ON,
It has a switching means for switching so that the switching magnet is in an OFF state at the time of stamping, and after the switching magnet is turned OFF, the stamper is lowered and reversed, and stamped on the surface to be printed ,
A holder which houses the pre-Symbol ink case and switchable magnet has a reversing device that vertically reversible slide supporting said stamper to said holder, said inverting device is elastically biased in a protruding direction, of the stamper In a state where the marking part is inserted into the opening part of the ink case, the diameter of the opening part is reduced by the magnetic force of the switching magnet, so that the seal contact is made around the marking part.
The rotating magnet has a rotating gear on the ON-OFF switching rotating shaft, the holder has an operating gear that rotates the rotating gear by a predetermined angle, and when the holder is pressed toward the marking surface, the reversing tool is relatively stamp and wherein the actuating gear is that the switchable magnet by rotating the rotating gear is turned OFF when the rise. A plurality of sliders for detecting receding of the unevenness of the surface to be imprinted by the tip part contacting the surface to be imprinted before marking;
The plurality of have a frame which is inclined in the difference between the amount of recession between slider claim 1 Symbol mounting of the stamp unit, characterized in that a seal portion on the upper surface of the frame. 3. The stamp apparatus according to claim 2, wherein the stamp part is composed of a plurality of divided stamp plates, and each stamp plate is supported by the frame.

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