JPS6039558B2 - Uneven pattern thermal transfer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION When producing an information sheet such as a hologram card, and when thermally transferring an uneven pattern onto a thermoplastic sheet, the present invention provides an uneven pattern that can reliably thermally transfer a predetermined number of uneven patterns onto the sheet. The present invention relates to a pattern thermal transfer device.

In general, an information sheet such as a hologram card used in an access control device that allows only specific people to enter and exit a laboratory, archive room, or vault, etc. , since all numbers are constructed by sequentially arranging the fixed numbers 1 from 0 to 9, the numbers from 0 to 9 are code-converted, then converted into a dot pattern, and then shaped into a phase hologram. A sheet made of a transparent thermoplastic resin is heated and sequentially pressed with each transfer mold in which different fine unevenness patterns, such as the phase hologram pattern of fleas described in 1 above, are formed. It is manufactured by arranging patterns on a sheet and thermally transferring them.

By appropriately changing the combinations of the arranged concavo-convex patterns, many types of information sheets can be produced. A feature of this information sheet is that even if the information can be read with an optical reader, it cannot be read with the human eye. By the way, for the information sheet, as shown in FIG. In a conventional uneven pattern thermal transfer device that heats the transfer mold of the press head in which pattern 2 has been formed and presses it against the sheet 1, as shown in FIG. Or, the two types of concavo-convex patterns 2 may be thermally transferred twice at the last digit, resulting in a defective information sheet 3.

This invention takes the above-mentioned conventional problems into consideration, and prevents thermal transfer unless the transfer mold faces the first digit transfer position of the sheet. This invention is designed to prevent the sheet from being compressed by the mold. Next, this invention will be explained in detail with reference to FIG. 2 and subsequent drawings showing one embodiment thereof.

First, in FIGS. 2 to 5, 4 is a base with a press stand 5 on which the sheet 1 is reloaded, and 6 is a base whose base end is supported by a pivot 7 on the rear end of the base 4. This is the first press arm, and a rotational force is applied upward by a spring 8.

A second press arm 9 is pivotally connected to the free end of the first press arm 6 through a pivot 101, and is given an upward rotational force by the biasing force of a spring 11, and one end of which is manually pressed down. It has a possible operating section 9'.

12 has a pivot 13 whose upper end is at the end of the second press arm 9.
The clamp arm is pivoted by a spring 14, and a rotational force is applied in the counterclockwise direction in FIG. 5, that is, in the clamping direction.

15 is a clamp shaft provided at the front end of the base 4;
The hook portion 12' at the lower end of the clamp arm 12 is connected to the spring 1
4 is locked in the clamping direction, and the second press arm 9 is clamped.

Reference numeral 16 designates an engagement pin that is slidably provided on the second press arm 9. One end of the engagement pin 16 is engaged with an engagement step 6' at the free end of the first press arm 6. 2
When the press arm 9 is clamped, the first press arm 6 is also clamped by the engagement between the engagement pin 16 and the engagement step 6', and the transfer standby state is established.

Reference numeral 17 denotes a rotary shaft rotatably attached to the center of the first press arm 6 by a bearing 18, and reference numeral 19 denotes an elastic support whose base is fixed to the lower disk portion 17a of the rotary shaft 17 with a nut 20. IN-hard elastic pieces 19' are formed radially from the base, and each elastic piece 19' is attached to the rotating shaft 17.
It is attached to the disc part 17a by matching with a positioning recess 17b formed on the circumference of the disc part 17a.

Reference numeral 21 designates one lotus press head attached to the tip of each elastic piece 19', and when the first press arm 6 is clamped to the clamp shaft 15, one of the press heads 21 of the one is placed on the top of the press stand 5.

22 is a selection knob fixed to the upper end of the rotating shaft 17, and includes a scale plate 22' indicating the type of press head 21;
The scale plate 22' is located in the recess 6r in the upper part of the first press arm 6.
By loosely inserting and rotating, one of the press heads 21 is opposed to the press table 5.

23 is an L-shaped positioning lever pivotally connected to the first press arm 6 by a support shaft 24 in the vicinity of the elastic support 19; 25 is a positioning roller rotatably attached to one end of the positioning lever 23; , 26 is a pressure spring suspended on the other end of the positioning lever 23, which biases the positioning roller 25 in the direction in which it comes into pressure contact with the hawk end of the disk portion 17a, and when the selection knob 22 is operated, the rotation axis is set. When the elastic support 19 is rotated through the elastic support 17, the positioning rollers 25 are sequentially inserted into the respective layering recesses 17b of the disc portion 17a, and the press head 21 is positioned so as to correctly face the press table 5. .

27 is a cylinder provided on the first press arm 6 above the press head 21; 28 is a press pin that is movably installed in the seeder 27 and whose lower end is led out from the sill 27; When press arm 6 is on duty,
The press head 21 selected by the selection knob 22 is pressed against the sheet 1 on the press table 5.

29 is a coil spring that urges the press pin 28 downward;
0 is an inverted dish-shaped cover of the elastic support 19 fixed to the lower surface of the first press arm 6, and 31 is a terminal plate attached to the lower end of the rotating shaft 17, for supplying power to each press head 21. belongs to.

32 is a power supply lead wire connecting each press head 21 and the terminal board 31; 33 is a socket for connecting a power cord provided at the rear end of the base 4; and 34 is a protection stand, which can be selected using the selection knob 22. When the press head 21 is placed under the press head 21, it comes into contact with the press heads 21 on both sides of the press head 21, and prevents both press heads 21 from supporting the base body 4.

Next, in FIG. 6 showing the details of the press head 21, 35 is a bottomed cylindrical case made of a conductor that is attached to the elastic piece 19' of the elastic support 19 and also serves as one electrode;
Reference numeral 6 denotes a transfer mold fixed to the lower surface of the case 35, and a fine uneven pattern 2 like a phase hologram pattern is formed on the lower surface.

37 is an electrically insulating fabric part installed in the lower part of the case 35;
38 is a heating element housed in the insulating tube 37; 39 is the other electrode plate attached to the upper part of the heating element 38; the lead wire 32 connected to the other electrode plate 39 is inserted into the insertion hole of the case 35; is derived externally from

Reference numeral 40 denotes a plug that closes the upper entrance of the case 35 with a rocky surface 41 interposed therebetween, and 42 a pressing protrusion protruding from the center of the upper part of the plug 40.

Incidentally, phase hologram patterns corresponding to the lotus numerals of 1 from 0 to 9Z are formed as the concavo-convex pattern 2 of each transfer mold 36 of the press head 21 of 1, and the other IJ - line is elastic support 1
9 also serves as. Furthermore, with reference to FIG. 7, a description will be given of the structure of the sheet holder 43 that moves the thermoplastic sheet 1 and places the sheet 1 at each transfer position on the press stand 5 on a daily basis.

In the figure, reference numeral 44 is a support stand on which the aforementioned press stand 5 is erected and provided at the front end of the base body 4; 45 is a pair of support pieces fixed to the base body 4 at the upper portions on both sides of the support stand 44;
46 is a pair of guide rails installed in parallel between both support pieces 45 on both sides of the press table 5; 47 is a sheet holding stand movably mounted on both guide rails 46; and 48 is a sheet holding stand 47. 49 is a holder moving spring suspended between the sheet holding base 47 and one support piece 45 on the side of the guide rail 46 into which the pole bush bearing 48 is inserted. Yes, the sheet holding base 47 is biased in one direction.
Reference numeral 50 designates a horizontally elongated transfer hole that is transparent in the longitudinal direction at the center of the sheet holding table 47, through which the press table 5 is inserted, and when the sheet 1 is set on the sheet holding table 47, the sheet 1 The transfer position is placed on the press stand 5.

Reference numeral 51 denotes a magnetic holding plate attached to the rear portion of the upper surface of the sheet holding table 47, and holds one side of the sheet 1 stacked on the sheet holding table 47.

A movable holding plate 52 is rotatably supported on both sides of the sheet holding base 47 by pivot pins 52' at both ends, and holds the side portion of the sheet 1.

Reference numeral 53 is an articulating spring mounted between the sheet holding base 47 and the movable presser plate 52, and by rotating the movable presser plate 52, the movable presser plate 52 can be moved between the state in which the sheet is pressed and the sheet 1 Hold it in two positions, one being pulled up to remove it.

The seat holder 43 is provided on its lower surface with a rack 54 that engages with a pinion of a stepping mechanism, which will be described later, and an operating pin 55, which operates a lever mechanism, which will also be described later. Next, the configuration of the advancing mechanism for moving the seat holder 43 at predetermined intervals will be explained with reference to FIG. 5 and FIGS. 8 to 10.

In those figures, 56 is a mounting plate provided at the lower center of the base 4, 57 is a pivot provided upright on the mounting plate 56, and 58
is a pinion that is rotatably attached to a pivot shaft 57 and meshes with the rack 54; 59 is a ratchet that is integrally provided to the pinion 58; a support shaft is provided upright on the mounting plate 56; and 61 is a support shaft. The vertical moving plate 62 is a return spring that urges the vertical moving plate 61 downward, and 63 is the vertical moving plate 6.
The ratchet 5 is protruded from the front end of the vertical movement plate 61 when the vertical movement plate 61 moves upward.
The stopper 64 is a claw plate rotatably attached to the upper surface of the vertically movable plate 61, and the claw portion 64 of the claw plate 64
' is located above the stopper 63 and engages with the ratchet 59 when the vertical movement plate 61 is moved downward by the return spring 62. 6
5 is an engagement spring that biases the pawl plate 64 in the direction in which the pawl portion 64' engages with the ratchet 59; 66 is a pressing piece formed on the pine branch at the proximal end of the first press arm 6; and 67 is a base body. 4 is a swinging lever rotatably provided, and an engaging portion 67' that engages with a pressing piece 66 is formed on one end side.

68 is an engagement spring that urges the swinging lever 67 in the direction in which the engagement portion 67' touches the pressing piece 66; 69 is the swinging lever 6;
This is a stepping lever attached to the other end of the lever 7, and one end thereof is joined to the upper surface of the swinging lever 67, and the end thereof is in contact with the lower surface of the vertically moving plate 61.

Reference numeral 70 denotes a protective spring that biases one end of the walking lever 69 in the direction of mating with the upper surface of the swinging lever 67, and extends when the swinging lever 67 is rotated more than necessary by the pressing piece 66. This relieves the large pushing force exerted on the vertical movement plate 61 by the stepping lever 69.

Next, the operation of the above configuration will be explained.

First, in the state shown in FIG. 2, the movable presser plate 52 of the sheet holder 43 is erected as shown in FIG. , and one side of the sheet 1 is inserted and fixed between the sheet holding base 47 and the elastic presser plate 51, and the movable presser plate 52 is rotated to hold the side portion of the sheet 1 with the movable presser plate 52. Press to set the sheet 1 on the sheet holder 43.

At this time, the transfer position of the sheet 1 is transferred onto the press table 5. Then, the seat holder 43 is moved by the holder moving spring 4.
The sheet holder 43 is moved against the biasing force of the sheet 1 to the initial position where the first digit of the sheet 1 is transferred, that is, the press stand 5 is located on the green side of the first digit of the sheet 1. to migrate. When the seat holder 43 moves, as shown in FIG. 9 and FIG. 64' is in the engaged state, when the seat holder 43 is moved in the direction of the arrow A in FIG. 8, the ratchet 59 is rotated in the direction of the arrow B in the figure due to the engagement of the rack 54 and the pinion 58. Rotated in reverse. Therefore, since the pawl plate 64 escapes in the direction of arrow C in FIG. 10e, the ratchet 59 can rotate freely and no hindrance occurs when the seat holder 43 moves. Further, when the seat holder 43 has been moved to the initial position, even if you release your hand from the seat holder 43, the ratchet 59 will not move the claw plate 64.
The seat holder 43 is engaged with the rack 54 and the pinion 58 that is integrated with the ratchet 59.
is stopped at the initial position. Then, when the first and second press arms 6 and 9 are rotated downward against the biasing force of the spring 8, the hook portion 12' of the clamp arm 12 is eventually rotated.
is locked to the clamp shaft 15, resulting in a state as shown in FIG.

At this time, each press head 21 is spaced apart from the sheet 1, and in each press head 21, the terminal plate 31, the lead wire 32, and each elastic piece 19' of the elastic support 19
Through the bottomed cylindrical case 35 and the electrode plate 39 are energized, the temperature of the heating element 38 rises, and the heat of this heating element 38 is conducted to the transfer mold 36 through the bottomed cylindrical case 36.
The transfer mold 36 is heated to the required temperature. Next, by operating the selection knob 22 and aligning the scale plate 22' with the number you want to transfer, the corresponding desired press head 2
1 is located on sheet 1. At this time, the positioning roller 25 engages with the recess 17b of the rotating shaft 17, and the press head 21 is stopped at the correct position. Then, as shown by the arrow in FIG. 5, when the operating portion 9' of the second press arm 9 is pushed down, the clamp arm 12 and the second The press arm 9 is linked and the first press arm 6 is pushed down. Here, the first press arm 6
5, the press piece 66 of the pivot portion of the first press arm 6 moves in the direction of arrow D in FIG. 9 before the press head 21 comes into contact with the sheet 1 as shown in FIG. The flipper swing lever 67 is rotated in the direction of arrow E in the same figure, and the vertical movement plate 61 is pushed up from the states shown in FIGS. The state becomes d. Therefore, the claw portion 64' of the claw plate 64 is disengaged from the ratchet 59, and the ratchet 59 is rotated in the direction of arrow F in FIG. However, due to the upward movement of the vertical moving plate 61, the stopper 63 engages with the ratchet 59, as shown in FIGS. is moved by a predetermined distance determined by one tooth of the ratchet 59, and the first digit transfer position of the sheet 1 faces the press head 21. Thereafter, as shown in FIG. 5, the press pin 28 comes into contact with the pressing protrusion 42 of the press head 21 due to the biasing force of the coil spring 29, presses the press head 21 downward, and heats the press head 21. The transferred mold 36 is pressed against the first digit transfer position of the sheet 1, and the concavo-convex pattern 2 of the transcription mold 36 is thermally transferred to the sheet. When the pressure on the second press arm 9 is released after thermal transfer, the restoring force of the springs 8 and 11 causes the first and second press arms 6 and 9 to return to the standby state shown in FIG. It returns and the press head 21 separates from the sheet 1.

At this time, since the pressing piece 66 of the pivot portion of the first press arm 6 is moved in the opposite direction of arrow D in FIG.
1 is moved downward by the return spring 62. Therefore, the stopper 63 is disengaged from the ratchet 69 from the state shown in FIGS. 10c and d, so the ratchet 59 is rotated in the direction of arrow F in FIG. As shown in Figure b, the pawl portion 64' of the pawl plate 64 engages with the ratchet 59, the ratchet 59 rotates by one tooth and then stops, and the seat holder 43 rotates by one tooth of the ratchet 59 in Figure 8. is moved in the opposite direction of arrow A, and waits until the next transfer operation. That is, the sheet 1 on the sheet holder 43 is moved by one digit by one reciprocating operation of the press arms 6 and 9 up and down. Thereafter, when the press head 21 is arbitrarily selected using the selection knob 22 and the same operation is repeated, different concavo-convex patterns 2 are successively thermally transferred in a line onto the sheet 1, and the information sheet 3 is produced. Next, the configuration of the lever mechanism that thermally transfers the uneven pattern 2 from the transfer position of the first digit on the sheet 1 and detects the end of the transfer operation of the final digit is shown in FIGS. 1, 5, and 7. Figure 1
This will be explained with reference to FIGS. 1 to 14.

In those figures, reference numeral 71 is an end position detection lever whose one end is pivotally supported by a pivot pin 72 mounted on the support base 44, and at one end, the sheet holder 43 moves the sheet 1 beyond the transfer position of the final digit. A contact surface 71a is formed on the lower surface of the seat holder 43, with which the operating pin 55 comes into contact when the seat holder 43 is moved, and a guide hole 71b is formed at the other end. 73 is a first slide plate, and a guide hole 73 is provided transparently in the longitudinal direction.
In a, two guide pins 74 fixed to the support base 44 are slidably passed through, the sliding direction and sliding range are regulated, and the connecting pin 75 installed as a shield at one end is at the end position. It is movably inserted into a guide hole 71b of the detection lever 71 and connected to the end position detection lever 71, and an insertion hole 73b for a stop bar, which will be described later, is transparently provided at the other end.

Reference numeral 76 denotes an initial position detection lever whose one end is pivotally supported by a pivot pin 77 that is connected to the support stand 44, and the sheet holder 43 is moved beyond the first digit transfer position of sheet 1 at one end. A support surface 76a that is supported by the actuating pin 55 of the seat holder 43 is formed at the same time, and a guide hole 76b is formed at the other end.

A second slide plate 78 is arranged parallel to the first slide plate 73, and has a guide hole 78 formed transparently in the longitudinal direction.
', two guide pins 79 mounted on the support base 44 are slidably inserted to regulate the sliding direction and sliding range, and a connecting pin 80 mounted on one end detects the initial position. It is slidably inserted into the guide hole 76b of the lever 76 and connected to the lever 76 for initial position detection.

81 is a connecting lever pivotally supported by a pivot 82;
Connecting pins 83 and 84 provided at each end of the first and second slide plates 73 and 78 are inserted into guide holes 81' formed at both ends, respectively, to connect both slide plates 73 and 78. are doing.

85 is a reversing spring suspended between one end of the connecting lever 81 on the side of the first slide plate 73 and the support base 44; 86 is a stop bar attached to the free mechanism of the first press arm 6 in a substantially perpendicular direction; Reference numeral 87 denotes an insertion hole for the stop bar 86 which is transparently provided in the upper front end of the base 4, and 88 is an insertion hole for the stop bar 86 that is transparently provided in the support base 44 opposite to the insertion hole 87 of the base 4.

Next, the operation of the lever mechanism will be explained.

Now, if the thermal transfer operation of the uneven pattern 2 onto the sheet 1 by the press head 21 is being performed normally, the first
As shown in FIG. 3, the first slide plate 73 is moved in the M direction and held in that position by the reversing spring 85, and as shown in FIG. The insertion holes 73b, 88 of the base 4 and the support base 44 are matched with each other, and the insertion holes 73b,
A stop bar 86 is inserted through 87 and 88, and the stop bar 86 moves up and down with each transfer operation.

Then press head 2 is placed at the transfer position of the last digit of sheet 1.
In a state in which the first transfer mold 36 is pressed, that is, in a state in which the final digit has been transferred, the actuation pin 55 of the sheet holder 43 touches the contact surface 71a of the end position detection lever 71.
When the second press arm 9 is released from this state, the seat holder 43 releases the holder moving spring 4.
9 is moved in the direction of the arrow G in FIG. The first slide plate 73 is slid in the direction of the arrow H, the connecting lever 81 is rotated, the second slide plate 78 is slid in the direction of the arrow 1, and the initial position detection lever 76 is moved to the plate pin 77. is rotated in the direction of the arrow with
The contact surface 76a of the initial position detection lever 76 is located perpendicular to the moving direction of the seat holder 43, and the reversing spring 85 allows each lever 71, 81, 76 and both slide plates 73
, 78 are stopped at that position. Therefore, by moving the first slide plate T3 in the direction of the arrow H, the insertion hole 7 of the first slide plate 73 is opened as shown in FIG.
3b is moved to a position where it is removed from each insertion hole 87, 88 of the base 4 and the support base 44, so even if the second press arm 9 is pressed next, the stop bar 86 will not move to the first slide plate 73. The pressure of the press head 21 on the sheet 1 is prevented, and the operator confirms that a predetermined number of uneven patterns 2 have been thermally transferred to the sheet 1. , the clamp arm 12 is removed from the clamp shaft 15, both press arms 6 and 9 are raised, the produced information sheet 3 is removed from the sheet holder 43, and a new sheet 1 is set in the sheet holder 43. next,
When the seat holder 43 on which the seat 1 is set is moved in the direction of arrow G in FIG. When the sheet holder 43 is further moved, the initial position detection lever 76 is rotated and the second slide plate 78 is moved in the direction of the arrow in the figure, as shown in FIG. Through the rotation of the coupling lever 81, the first slide plate 73 is slid in the direction of the arrow in the figure, and the reversing spring 85 causes the insertion hole 73b to connect to the base 4 and the support base. It is stopped at a position that matches each of the insertion holes 87 and 88 of 44. therefore,
The stop bar 86 can be inserted into each of the insertion holes 87, 73b, and 88. That is, when the sheet holder 43 is returned to the predetermined initial position and the press head 21 is released from pressing the sheet 1, and then the second press head 9 is pressed, the press head 21 is seat 1
Immediately before the sheet 1 is pressed against the sheet 1, the sheet holder 43 is moved so that the first digit transfer position of the sheet 1 is placed on the press table 5. As described above, according to the uneven pattern thermal transfer device of the present invention, the press arm is attached to the rear end of the base having the press stand and is given an upward rotational force, and the uneven pattern is formed. a plurality of press heads each having a transfer mold and a heating element for heating the transfer mold; an elastic support body arranged and fixed to each of the press heads and attached to the press arm; a selection knob that is fixed and makes any one of the press heads face the press table; and a reciprocating sheet that moves a thermoplastic sheet to sequentially transfer each transfer position of the sheet onto the press table. a holder, a transfer means for moving the press arm downward to press the press head against the sheet, a moving means for moving the sheet holder by one digit of transfer of the sheet after the operation of the transfer means, By comprising a blocking means for blocking the downward movement of the transfer means after the transfer of the digit, and a releasing means for releasing the blocking means when the sheet holder is returned to the transfer position of the first digit of the sheet,
The uneven pattern is always thermally transferred from the first digit transfer position of the sheet, and once the heat transfer of a predetermined number of uneven patterns is completed, the press head is prevented from pressing onto the sheet, and the excess uneven pattern is removed. This function not only prevents thermal transfer of information but also notifies the operator that the work has been completed, thereby preventing the production of defective information sheets.

[Brief explanation of drawings]

Figures 1a and 1b are plan views of good and bad information sheets, Figures 2 and below show an embodiment of the uneven pattern thermal transfer device of the present invention, and Figure 2 is a view from the front with the press arm pulled up. 3 is a perspective view from the rear with the press arm in a clamped state, FIG. 4 is a partially cutaway plan view, FIG. 5 is a cutaway right side view, and FIG. 6 is a sectional view of the press head. Figure 7 is a perspective view of the seat holder and lever mechanism from the front, Figures 8 and 9 are a plan view and right side view of the stepping mechanism, respectively, and Figures 10a to 10e are operation of the stepping mechanism, respectively. , Figures a and b are a plan view and a right side view in a non-transfer operating state, figures c and d are a plan view and a right side view in a transfer operating state, and figure e is a plane view with the sheet holder in the initial position direction. Figures 11 to 12 show a plan view during movement, Figures 11 to 4 show the ladder bar mechanism, and Figures 11 and 12 are respectively a plan view and an X-axis line of the state in which the uneven pattern has been thermally transferred to the final digit of the sheet. The sectional view, FIG. 13, and FIG. 14 are a plan view and a sectional view taken along the line Y-Y' when the seat holder returns to its initial state, respectively. DESCRIPTION OF SYMBOLS 1... Sheet, 2... Uneven pattern, 4... Base, 5... Press stand, 6... Press arm, 19...
- Elastic support, 21... Press head, 22... Selection knob, 36... Transfer mold, 38... Heating element, 4
3... Seat holder, 71, 76, 81... Lever. Figure 1 Figure 2 Figure 3 Figure 4 Figure 6 Figure 5 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14

Claims (1)

[Claims] 1 A plurality of press arms that are pivotally attached to the rear end of a base having a press stand and are given an upward rotational force, a transfer mold on which a concavo-convex pattern is formed, and a heating element that heats the transfer mold. a plurality of press heads, an elastic support body which arranges and fixes each of the press heads and is attached to the press arm, and a selection knob which is fixed to the elastic support body and makes any one of the press heads face the press table. , a reciprocating sheet holder that moves a thermoplastic sheet and sequentially places each transfer position of the sheet on the press table; and a transfer means that moves the press arm downward and presses the press head against the sheet. a moving means for moving the sheet holder by one transfer digit of the sheet after the operation of the transfer means; a blocking means for blocking the downward movement of the transfer means after the transfer of the last digit of the sheet; A concavo-convex pattern thermal transfer apparatus comprising: a release means for releasing the blocking means when the sheet is returned to the first digit transfer position.