JPH10315596A - Marking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a marking device which is small-sized and rich in durability and can form a clear mark on a medium. SOLUTION: In this marking device, a circular type set member 4 formed of arms 16A (16B) fitted with marking parts 7A (7B) and provided radially in large numbers is rotated by a rotating drive means 9, the temperature of the marking parts 7A (7B) is raised by a temperature raising means 6, prescribed ones out of these marking parts of which the temperature is raised are brought into pressure contact with a medium 1 by a pressure contact means 8 and marks are formed on the medium 1 with heat and pressure applied. In order to increase the clearness of the marks, the marking parts 7A are brought into pressure contact with the medium 1 with a hot-melt ink member interposed between the parts and the medium 1 and colored marks are formed on the medium 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engraving device for engraving characters, symbols, numerals, patterns, etc. on a plate-like medium such as a card.

[0002]

2. Description of the Related Art An engraving device for engraving characters, symbols, numerals, or designs on a plate-like medium such as a card includes an engraving portion having a protruding character at the tip thereof and a flat portion disposed opposite thereto. An ink ribbon is arranged between the medium and the upper part of the medium and pressed to form a concave inscription corresponding to the convex type and form a so-called indented character in which the inside of the engraving is colored. A convex engraving corresponding to the convex type, that is, a so-called embossed character, by arranging the medium between the engraved part provided with the convex type and the concave type engraved part arranged opposite thereto and pressing both media. There is something that forms. In these marking devices, a marking portion is provided on each of the two arms facing each other, a large number of the facing arms are provided radially to form a circular type assembly member, and the type assembly member is centered using a driving means. , And selectively engraving a desired engraving portion on the medium placed at the engraving position, thereby forming an indented character or an embossed character.

[0003]

In such an engraving device, a plate-shaped medium such as a card is pressed by two engraving portions provided opposite to each other to form indented characters or embossed characters. Occasionally, a strong pressing force is required, and the device is required to have sufficient rigidity to withstand it. This tends to increase the size of the device. In particular, when forming indented characters, the pressing force at the time of engraving is greater than when forming embossed characters, and the device for dealing with this is large.

When such a large pressing force is applied to a plate-shaped medium, a large stress is applied to the medium, and distortion is left on the medium after forming the mark. Such distortion increases as the amount of engraving for one medium increases, causing the medium to warp. When the pressing force at the time of engraving is large, the use limit of the convex type at the tip of the engraved portion becomes short.

Also, in the marking device for forming indented characters, the ink ribbon is pressed against the medium to color the inside of the marking in a concave shape, so that the ink does not adhere well to the medium, or the medium is used with the use of the medium. There is also a problem that the ink drops and the visibility of the stamp is reduced. Especially when such a medium is a card, the characters and numbers imprinted on the card are very important for security, so that reduction in the visibility of the imprint is a serious problem.

SUMMARY OF THE INVENTION In view of the foregoing problems, an object of the present invention is to provide a small and durable marking device, and in addition, to provide a marking device capable of forming a clear marking on a medium. Another purpose is to do.

[0007]

In order to solve the above-mentioned problems, according to the first aspect of the present invention, a marking portion is provided on two arms facing each other with a medium for marking characters or the like therebetween. A plurality of arms are provided radially to form a circular type assembly member, and the engraving device rotatably supports the type assembly member about a rotation axis. Temperature raising means for raising the temperature of
A stamping unit having a press-contact means for pressing a predetermined marking part of the typesetting member against the medium, and a rotation driving means for rotating the typesetting member, wherein the rotation driving means rotates the typesetting member to raise the temperature, and Is pressed against the medium by pressing means,
When the stamp portion and the medium are pressed against each other, the stamp portion is easily deformed by the heat of the stamp portion or the heat of the medium, so that the pressing force at the time of the stamp is reduced, and the stress on the medium and the load on the apparatus are reduced. Also, noise at the time of stamping is reduced.

According to the second aspect of the present invention, in the marking device according to the first aspect, since the hot-melt ink member is interposed between the marking portion and the medium, the inside or the surface of the marking formed on the medium is removed. It can be colored, and the visibility of the engraving is improved.

According to a third aspect of the present invention, in the engraving device of the second aspect, the medium is a plastic card, the hot-melt ink member is a sheet member having an ink containing plastic, and the temperature of the engraved portion is higher than the card temperature. And the temperature at which the ink is melted, so that the medium surface on which the stamp is pressed is melted and the stamp is made, and the heat of the stamp melts the ink of the hot-melt ink member into the stamp and heats the ink. Adhesion failure and ink drop are eliminated, and an engraved mark with good visibility is formed.

According to a fourth aspect of the present invention, in the marking device according to the third aspect, a moving mechanism for holding the medium and moving the medium in the X-axis and Y-axis directions is provided. A plurality of good marks can be formed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A marking device according to the present invention is provided with a marking portion for marking characters and the like, two arms arranged opposite to each other with a medium interposed therebetween, and a large number of the opposed arms are radially provided. To form a circular typesetting member.
The typesetting member is rotatably supported about its rotation axis and is driven to rotate by a rotation driving means so that a predetermined marking portion of the typesetting member is pressed against the medium by the pressing means. This engraving device is provided with a heating means for raising the temperature of the medium or a plurality of engraved portions of the typesetting member, and increasing the temperature of either the engraved portion or the medium and applying heat and pressure as desired. Characters, numbers, symbols, etc. are stamped on the medium.
As the engraved part, those which form a so-called embossed character which is a convex engraved character by a convex type and a corresponding concave type, or those which form a so-called indented character which is a concave engraved shape by a convex type and a plane opposed thereto. No.

When the temperature of the medium is raised by the temperature raising means, the temperature of the entire medium may be raised, or only the portion to be marked may be partially heated. When the temperature is to be raised partially, it is preferable to provide a temperature raising means near the marking position where the marking is performed at the marking portion.

When the temperature of the engraved portion is raised by the temperature raising means, both the engraved portion facing the engraved portion may be heated, or only the engraved portion on which the convex character is formed may be heated. good. Examples of the temperature raising means include a heater, an electromagnetic wave generator, a hot air generator, and other heat generating members, and a temperature raising section in which these are disposed. The typeset member provided with the engraved portion may be rotated to pass through the space to raise the temperature of the entire engraved portion, or a heat generating member may be embedded in each engraved portion to individually raise the temperature. Alternatively, the temperature can be raised by contacting each of the engraved parts with the heat-generating member, the arm supporting the engraved part can be heated to conduct heat, and the engraved part can be heated. To increase the temperature.

In order to improve the visibility of the stamp formed on the medium, it is preferable that the stamp is pressed against the medium with the hot-melt ink member interposed between the medium and the stamp.

Examples of the medium include a plate member made of plastic, a recording card capable of recording and reproducing information represented by a magnetic card, a card having an IC chip, and the like. When the medium is a plastic recording card, when the temperature of the engraved portion is raised to a temperature at which the ink of the card and the hot-melt ink member is melted, the heat of the engraved portion forms the hot-melt ink member on the card. The ink melts into the concave or convex engraved mark and the ink does not easily fall off. As the hot-melt ink member, a plastic ribbon (resin ribbon) or the like containing a resin in the ink is preferable in that the ink is melt-integrated with an imprint formed on a plastic medium.
The temperature at which the temperature is raised is preferably set lower than the temperature at which the medium is completely softened so that unnecessary deformation of the medium does not occur.

It is possible to change the position of the mark formed on the medium,
When a plurality of markings are made on one medium, the X-axis-Y
It is preferable to hold the medium in a moving mechanism that can move in the axial direction and move the medium between stamping operations.

As a medium moving mechanism, a slide mechanism used in a well-known XY plotter or another well-known slide mechanism is appropriately combined and arranged orthogonally, and one side holds the medium and is arranged in the X and Y directions. You may make it move.

As for the management of the temperature rise temperature, a temperature detection sensor for detecting the temperature inside the temperature rise means or for detecting the radiant heat from the engraved portion outside the temperature rise means is provided. It is preferable to electrically control the temperature raising means.

[0019]

Embodiments of the present invention will be described below in detail with reference to the drawings. The marking device shown in FIGS. 1 and 2 is for marking a concave character on a plastic card 1 as a medium. The characters referred to here include hiragana, katakana, kanji, alphabets, symbols, figures, and the like.

The engraving device includes an upper type member 7 serving as an engraved portion on which a type for forming a concave character on the card 1 is formed.
A and a type wheel 4A, 4B as a type assembly member having a lower type member 7B, a stepping motor 5 as a rotary drive unit for rotatingly driving the type wheels 4A, 4B, a temperature raising unit 6 for raising the temperature of the marking member 7, selection. There is provided a pressing means 8 for pressing the given predetermined marking member against the card 1 at the marking position 9 and a moving mechanism 10 for holding the card 1 and enabling it to move in the X-axis and Y-axis directions. In this embodiment, the upper print member 7
As shown in FIG. 4, the end face of A is formed with a convex type to form a marking surface 7a, and the end surface of the lower type member 7B is made flat to form a marking receiving surface 7b.

In the marking device, a frame plate 3 is fixed horizontally on both sides of a metal base frame 2. The step pin motor 5 is mounted on the frame plate 3 via the motor mounting plate 11 so that the output shaft 12 is located in the vertical direction. The output shaft 12 is a step pin motor 5
A mounting plate 18 is fixed to one end 12a, and a detection plate 13 provided with a code indicating the position of the upper print member 7A is fixed to the other end 12b.
A pair of sensor columns 14 are fixed to the frame plate 3. A sensor section 15 for reading a code on the detection plate 13 is attached to an upper end of the sensor support 14 via a sensor board 15a.

As shown in FIG. 3, the type wheels 4A and 4B have a plurality of arms 16 extending radially from the center thereof.
A and 16B are made of a circular spring material formed at equal angles (equal intervals) in the circumferential direction. Each arm 16A, 16B
Are provided to face each other. Each arm 1
At the tip 16Aa, 16Ba side of each of 6A, 16B, a square hole 17A for fitting the type members 7A, 7B is provided.
17B are perforated. Type wheel 4A,
At the center of 4B, an insertion hole 19 and a plurality of mounting holes 20 are provided on the outer peripheral side thereof. Tip 16 of each arm 16
The a side is slightly bent in the vertical direction, and at the time of engraving, the engraving surface 7a of the upper printing member 7A and the engraving receiving surface 7b of the lower printing member 7A are pressed against the card 1 in parallel. I have.

As shown in FIG. 2, the boss portion 18 is formed with small-diameter sleeves 18b and 18c above and below a main body 18a of a cylindrical portion. The type wheels 4A and 4B allow the respective through holes 19 to pass through the respective sleeves 18b and 18c.
The type wheel 4A is provided between the wheel holding outer plate 21A and the wheel holding inner plate 21B.
Wheel holding outer plate 22A and wheel holding inner plate 22B
And are held between them.

The wheel holding outer plates 21A, 22A are discs, and have holes 23a, 24a and holes 23b, 24b opposed to the mounting holes 20 in the center thereof, respectively. The wheel holding outer plates 21A and 22A are
Insert the sleeves 18b, 18c into the holes 23a, 24a,
The type wheels 4A, 4B are fixed to the boss portion 18 by screwing a screw 25 to the main body 18a from the holes 23b, 24b and the mounting hole 20. Wheel press inner plate 21
B and 22B are discs slightly larger in diameter than the wheel holding outer plates 21A and 22A, and have holes 26a and 26b formed in the center thereof so that they can be inserted into the outer periphery of the main body 18a. It is slidable in the axial direction. A compression coil spring 27 wound around the main body 18a is interposed between the wheel holding inner plates 21B and 22B. The wheel holding inner plates 21B and 22B are urged away from each other by the action of the spring.

The type wheels 4A, 4B are composed of wheel holding outer plates 21A, 22A and wheel holding inner plates 21B, 2B.
2B, and is fixed to the boss 18.
For this reason, even if the stepping motor 5 is driven to rotate, it does not warp due to vibration, and its rigidity is ensured. The distance h between the wheel holding inner plates 21B and 22B is formed to be larger than the thickness of the card 1 so as not to interfere when the card 1 moves. Type wheel 4
A and 4B are normally rotated clockwise in FIG. 1 by the stepping motor 5.

A plastic ribbon 28 serving as a hot-melt ink member is interposed between the card 1 and the marking member 7A. The ribbon 28 is stretched between a supply unit and a winding unit (not shown). Each time the engraving operation on one card 1 is completed, the ribbon 28 is wound at least by the length used when engraving the card 1. Is to be taken.

As shown in FIG. 1, the temperature raising means 6 is disposed so as to cover a substantially half area of the substantially type wheels 4A and 4B in plan view. As shown in FIG. 2, the temperature raising means 6 includes plate-shaped ceramic heaters 60 and 61 formed in a half ring shape, and a temperature raising chamber 62 for covering the heaters. The heater 60 is arranged above the engraving member 7A, and the heater 61 is arranged below the engraving member 7B, so that the temperature of the engraving members 7A and 7B is increased from above and below. The temperature raising chamber 62 has a circumferential groove 63 formed on an inner circumferential surface 62 a thereof, and the type wheels 4A and 4B are rotatably inserted into the chamber 62 from the circumferential groove 63.

A temperature detection sensor 67 for detecting the temperature of the upper marking member 7A is provided downstream of the type wheels 4A and 4B in the rotation direction. As the temperature detection sensor 67, an infrared detection sensor is used here,
The temperature of the upper engraving member 7A is measured by detecting infrared rays emitted from the upper engraving member 7A immediately after passing through the inside.

As shown in FIG. 1, FIG. 5, and FIG. 6, the press-contact means 8 is a holder for pressing the upper engraving member 7A and the lower engraving member 7B, which are the predetermined engraving parts, which are placed at the engraving position 9. 31, 32, pressing members 33, 34 supporting the holder portions 31, 32, pressing levers 35, 36 connected to the pressing members 33, 34, cam mechanisms 37, 38 for swinging the pressing levers 35, 36; It is mainly composed of a drive motor 39 for driving the cam mechanisms 37 and 38 to rotate.

The drive motor 39 is mounted laterally on the side 2A of the base frame 2 via a bracket 41, and its output shaft 40 has one end 40a located inside the side 2A. As shown in FIG.
As shown in FIG. 7, a position detection plate 42 indicating the home positions (initial positions) of the holder units 31 and 32 is fixed. The position detection plate 42 includes an interrupter type sensor 4
3 are engaged. The sensor 43 detects the position information from the position detection plate 42, and detects the side information 2A via the substrate 44.
Attached to a support column 44 fixed to the support column 44.

As shown in FIGS. 4 and 5, the holder portion 31 fixes a clip 46 having a groove 45 to be engaged with the top 7A1 of one upper engraving member 7A, and fixes the clip 46 to the pressing member 33. And a block 47. The groove 45 is provided on the top 7 of the upper engraving member 7A that rotates.
It is formed large enough not to contact A1. In the groove 45, hook portions 45a and 45b are formed.
The hook portions 45a and 45b are bent toward the inside of the groove portion 45, and forcibly lift the upper engraving member 7A when the holder portion 31 returns to the initial position.

The holder portion 32 is provided with one lower engraving member 7B.
And a block 50 for fixing the clip 49 to the pressing member 34. The clip 49 has a groove 48 for engaging with the top 7B1. The groove 48 is formed large enough not to contact the top 7B1 of the lower engraving member 7B that rotates. The groove 48 has a hook 48a,
48b are formed. The hook portions 48a and 48b
It is bent toward the inside of the groove portion 48, and when the holder portion 32 returns to the initial position, the lower engraving member 7B is forcibly formed.
To lift. In the present embodiment, the marking position 9 indicates a position where the holder units 31 and 32 are arranged.

As shown in FIGS. 5, 6, and 7, the pressing levers 35 and 36 are respectively formed with elongated holes 35a and 36a extending in the lateral direction in a substantially quadrangular plate member having arcuate corners. ing. The cam portions 51 of the eccentric cams 51 and 52 constituting the cam mechanisms 38 and 39 are provided in the elongated holes 35a and 36a.
a, 52a are fixed to one end 40a of the output shaft.
Ball bearings 53, 54 having the same diameter as the longitudinal dimensions of the long holes 35a, 36a are mounted on the cam portions 51a, 52a.

The pressing levers 35, 36 located between the holders 31, 32 and the output shaft 40 have holes 58a, 58, respectively.
b and long holes 59a and 59b are formed respectively.
In the hole 58a of the pressing lever 35, the side 2 of the frame 2 is inserted.
A fulcrum shaft 56 supported by support plates 55A and 55B fixed to A and 2B is inserted and fixed. The support plates 55A, 55B are provided below the fulcrum shaft 56 in the elongated holes 59a of the pressing lever 35.
The fulcrum shaft 57 is loosely fitted. The fulcrum shaft 57 is inserted and fixed in the hole 58b of the pressing lever 36,
A fulcrum shaft 56t is loosely fitted to 9b.

The pressing member 33 is a chamfered square member, and the pressing lever 35 located above the support shaft 56 is provided.
Is fixed to the upper end 35b. The pressing member 34 is a chamfered square member, and is fixed to the lower end 36 b of the pressing lever 36 located below the support shaft 57.

When the output shaft 40 rotates, the pressing lever 35 swings about the fulcrum shaft 56 to move the holder 31 to the position shown in FIG.
(A) is configured to reciprocate between an initial position indicated by a two-dot chain line and a pressing position indicated by a solid line.
6 swings about the fulcrum shaft 57 when the output shaft 40 rotates, and reciprocates the holder 32 between the initial position indicated by the two-dot chain line and the pressing position indicated by the solid line in FIG. 7B. Respectively.

On the peripheral surface of the cam 52, a shielding plate 65 is projected. An optical sensor 66 for detecting the shielding plate 65 is attached to the support plate 55A, and detects the presence or absence of a pressing operation.

Stepping motor 5, drive motor 39,
As shown in FIG. 1, the heaters 60 and 61, the sensor boards 15a and 44, the optical sensor 66, and the temperature detection sensor 67
It is electrically connected to a controller 70 serving as control means. The controller 70 includes a character forming information section 7.
1 and is electrically connected. The main part of the controller 70 is constituted by a known microcomputer. The controller 70 has a main switch 72. When the main switch 72 is turned on, the controller 7
0 is activated and the heaters 60 and 61 are energized to generate heat, and the respective marking members 7A and 7B are heated and heated, and the stepping motor 5 is activated to activate the type wheels 4A and 4B.
Is rotated clockwise at a constant speed.

The sensor substrate 15 constantly monitors the position of the convex letters formed on the upper engraving member 7a.
Is entering that information. In the controller 70, when the character information is sent from the character formation information section 71, based on the input information from the sensor substrate 15, the upper engraving member 7 A having the convex type of the character is moved to the engraving position 9 in the shortest. The rotation direction of the stepping motor 5 is controlled, and when the selected upper engraving member 7A reaches the engraving position 9, the stepping motor 5 is stopped. The predetermined engraving portions indicate the upper and lower engraving members 7A and 7B which are selected and stopped at the engraving position 9.

The controller 70 includes a temperature detection sensor 70
Based on the temperature information from, the amount of heat generated by the heaters 60 and 61 is adjusted to control the upper engraving member 7A to be maintained at the elevated temperature. The temperature at which the upper engraving member 7A is heated is a temperature at which the ink of the card 1 and the ink of the plastic ribbon 28 are melted, and is set to about 100 ° here. The controller 70
When the selected upper engraving member 7A stops at the engraving position 9,
When the drive motor 39 is driven to rotate the output shaft 40 and the detection signal is input from the optical sensor 66, the drive motor 39 is stopped with the input of the home position signal from the sensor substrate 44 assuming that the engraving operation has been completed. Then, the stepping motor 5 is driven again to rotate the type wheels 4A and 4B clockwise.

Since the temperature rise depends on the material used for the card 1 and the type of the plastic ribbon 28, it is preferable to determine and set the temperature corresponding to each material by a test or the like. In this example, the convex engraved character is provided on the upper engraved member 7A, so the temperature of the upper engraved member 7A is detected. However, when the convex engraved character is provided on the lower engraved member 7B, the temperature is detected. Good. Further, the temperature of the lower engraving member 7B is desirably such that the card 1 does not melt when the engraving receiving surface 7b comes into contact with the card 1, and the calorific value of the heater 61 is controlled to be lower than that of the heater 60. The lower engraving member 7B is lower than the upper engraving member 7A. Alternatively, the area of the heater 61 may be reduced to reduce the amount of heat generated without controlling the amount of heat generated by the heater 61.

Next, the moving mechanism 10 will be described. The moving mechanism 10 is provided on a sub-frame 80 fixed to the base frame 2, as shown in FIG. As shown in FIGS. 8 and 9, the moving mechanism 10 includes an X-axis direction moving unit 81 for moving the card 1 in the X-axis direction and a Y-axis direction moving unit 82 for moving the card 1 in the Y-axis direction.

The X-axis direction moving means 17 includes the sub-frame 8
0 is mounted on one side of a frame 83 fixed to zero, and a drive motor M1 capable of rotating forward and reverse is mounted.
The screw shaft 84 horizontally supported on both sides of the third shaft 3 is driven to rotate in both forward and reverse directions. On the screw shaft 84,
The slider 85 is screwed. The slider 85 reciprocates on the screw shaft 84 depending on the rotation direction of the screw shaft 84. The slider 85 is connected to the sub-frame 83
Are slidably supported by a pair of guide shafts 86 supported on both sides in parallel and horizontally to stabilize the movement.

In the Y-axis direction moving means 82, a drive motor M2 which can rotate forward and reverse
7 is attached to one side via a bracket 87a.
On both sides of the frame 87, a screw shaft 88 is rotatably supported. The screw shaft 88 is arranged horizontally and orthogonally to the screw shaft 84 in plan view. The screw shaft 88 is connected to the drive motor M2, is driven to rotate in both forward and reverse directions, and is screwed with the slider 89. The slider 89 moves the screw shaft 88 depending on the rotation direction of the screw shaft 88.
It is designed to reciprocate above. The slider 89 is
The frame 87 is slidably supported by a pair of guide shafts 90 that are parallel and horizontally supported on both sides 87a and 87b of the frame 87 to stabilize the movement.

A card mounting table 91 is fixed to the upper portion 89a of the slider 89. A guide member 92 for positioning the card 1 in the Y-axis direction is
93 are provided. In the vicinity of the guide members 92 and 93, plate springs 94 and 95 for pressing and holding one side 1A of the card 1 against the card mounting table 91 are attached, respectively.

The drive motors M1 and M2 are connected to the controller 70 shown in FIG. 1, and are controlled to move in the X-axis direction and the Y-axis direction in synchronization with the marking operation. Here, card 1
The number of stamps in the Y-axis direction is determined, and the card placing table 91 is moved from the two-dot chain line position to the solid line position shown in FIG.
When the number of stamps to be stamped reaches a predetermined number, the card mounting table 91 can be moved in the X-axis direction to change the line to be stamped.

The engraving operation of the engraving device having such a configuration will be described. When the main switch 72 is turned on, the stepping motor 5 is driven to rotate the type wheels 4A and 4B at a constant speed, and the heaters 60 and 61 generate heat and the upper and lower marking members 7A and 7B are heated and maintained at a predetermined temperature. You. In such a standby state, the card 1 is set on the card mounting table 91, and the plastic ribbon 33 is disposed above the card. When the character information to be stamped is input from the character formation information section 71 to the controller 60, the upper marking member 7A to be stamped is positioned between the holder sections 31 and 32, which is the stamping position 9, as shown in FIG. Then, the type wheels 4A and 4B are stopped, and the drive motor 39 is driven.
By this drive, the cam mechanisms 37, 38 rotate, and the pressing arms 36, 36 move from the initial position shown by the two-dot chain line in FIG. 7 toward the pressing position shown by the solid line. With this movement, the holder portions 31 and 32 swing, and as shown in FIG. 10, the selected upper engraving member 7A and the lower engraving member 7BA which become the predetermined engraving portions by the clips 46 and 49 are inserted into the card 1.
Is pressed against the upper and lower surfaces. At this time, since the upper engraving member 7A is pressed against the upper surface of the card 1 from above the plastic ribbon 33, the card 1 and the ink of the plastic ribbon 33 are melted by the heat of the upper engraving member 7, and the card 1 and the ink are separated. Card 1 stamped with a concave and colored in accordance with the information melted
Formed on top. For this reason, ink adhesion failure and ink drop due to use of the card 1 are eliminated, and an engraved mark with good visibility can be formed.

On the other hand, when each of the pressing arms 35, 36 swings toward the initial position by the action of the cam mechanisms 37, 38, each of the holders 31, 32 moves away from the card 1 and the upper engraving member 7A. Then, the pressure contact between the lower engraving member 7B and the card is released. At this time, the card 1 is welded to each of the engraving members by heat and pressure.
A is engaged with the card 1, but the hook portions 45 a and 45 b of the clip 46 and the hook portions 48 of the clip 49.
a, 48b, each engraving member is attached to each holder 31, 31
The card 2 is forcibly separated from the card 1 with the movement of the card 2. Therefore, the upper and lower marking members 7A and 7B are securely separated from the card 1. This return operation stops when the home position is detected by the sensor 43, and the stepping motor 5 is driven again again instead, and the type wheels 4A, 4B
Is rotated at a constant speed, and the marking members 7A and 7B are heated and heated to a certain temperature.

When the engraving operation of one character is completed, the card placing portion 92 is moved by the feeding action of the Y-axis direction moving means 82, and the engraving operation according to the next character information is performed. This engraving operation is performed until all the engravings corresponding to the character information are formed on the card 1, and a predetermined concave engraved character 100 is formed on the card 1 as shown in FIG.

Thus, each of the engraved members 7A, 7
Since the engraving is formed on the card 1 using B, heat is transmitted to the card 1 from the upper engraving member 7A and the lower engraving member 7B, so that the card portion to be engraved is easily deformed, and each engraving member 7
The pressing force at the time of engraving can be reduced as compared with a conventional engraving device which does not raise the temperature of A and 7B. Therefore, the stress on the card 1 and the load on the device can be reduced, and the noise caused by the press-contact between the marking members 7A and 7B and the card 1 can be reduced. The ability to reduce the load on the device requires less rigidity of the device and the output of the drive motor 39 of the press-contact means 8, thereby reducing the size of the entire device and reducing the size of each of the marking members 7 </ b> A, 7.
The stress on B is also reduced, and the durability is improved.

The card 1 is moved in the column direction by the Y-axis direction moving means 82 every time the engraving operation is performed, and in some cases, is moved in the direction of changing the row by the Y-axis direction moving means 81. A plurality of stamps with good visibility can be formed.

[0052]

According to the first aspect of the present invention, since the medium is stamped in a state where the medium is easily deformed by the heat of the stamped portion whose temperature has risen or the heat of the medium, the pressing force at the time of stamping is reduced, and The stress and the load on the device are reduced, and the noise at the time of marking is also reduced, so that the device can be downsized and the durability can be achieved.

According to the second aspect of the present invention, since the hot-melt ink member is interposed between the marking portion and the medium, the inside or surface of the marking formed on the medium can be colored. In addition to the effects of the invention described in Item 1, it is possible to form a clear mark on the medium with good visibility of the mark.

According to the third aspect of the present invention, since the stamp of the ink of the hot-melt ink member is formed on the surface of the medium on which the stamp is pressed, the adhesion of the ink due to poor ink adhesion or the use of the medium is reduced. The number of drops is extremely small, and a clear mark with better visibility can be formed on the medium.

According to the fourth aspect of the present invention, since the medium can be moved, in addition to the effects of the above-described invention, a plurality of clear marks with good visibility can be formed at different positions on the medium.

[Brief description of the drawings]

FIG. 1 is a plan view showing an overall configuration of a marking device according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view showing a type assembly member, which is a main part of the present invention, and a rotation driving unit, a heating unit, and a moving mechanism thereof.

FIG. 3 is a plan view showing a configuration example of a typesetting member.

FIG. 4 is an enlarged view showing an example of a mounting structure of a tip of a typesetting member and a stamp portion.

FIG. 5 is a configuration diagram illustrating an example of a support structure of a pressing lever that is a component of the pressing means;

FIG. 6 is a cross-sectional view showing an example of a configuration of a pressing lever and a cam portion, which are essential parts of the pressing means.

FIG. 7A is a cross-sectional view showing a mechanism for moving an upper engraved portion of the pressing means and its operation, and FIG. 7B is a cross-sectional view showing a mechanism for moving a lower engraved part of the pressing means and its operation. FIG.

FIG. 8 is a plan view showing a configuration of a moving mechanism.

FIG. 9 is a side view illustrating a configuration of a moving mechanism.

FIG. 10 is an enlarged view showing a pressing operation on a medium at a marking position.

FIG. 11 is a perspective view showing an example of a medium and a stamp formed on the medium.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Medium 4A, 4B Type assembly member 5 Rotation drive means 6 Heating means 7A, 7B Engraved part 8 Pressure contact means 10 Moving mechanism 12 Rotary shaft 16A, 16B Arm 28 Hot melt ink member 100 Engraved

Claims (4)

[Claims] 1. An engraved portion is provided on two arms facing each other with a medium for engraving characters or the like therebetween, and a large number of the opposed arms are radially provided to form a circular type assembly member. A marking device that supports a typesetting member rotatably about a rotation axis, wherein a plurality of marking portions of the typesetting member or a temperature raising means for raising a temperature of the medium; and a predetermined marking of the typesetting member. Pressing means for pressing the printing unit against the medium, and rotation driving means for rotating the typesetting member, wherein the rotary driving means rotates the typesetting member to raise the temperature of the engraved part, and presses the engraved part. A marking device configured to be stamped by being pressed against the medium. 2. The marking device according to claim 1, wherein a hot-melt ink member is interposed between the marking portion and the medium. 3. The medium is a plastic card, the hot-melt ink member is a sheet member having an ink containing plastic, and the temperature of the engraved portion is a temperature at which the card and the ink are melted. The marking device according to claim 2. 4. The marking device according to claim 3, further comprising a moving mechanism for holding the medium and moving the medium in the X-axis and Y-axis directions.