JP4034393B2 - Non-contact IC card antenna coil winding jig and manufacturing method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a non-contact IC card, and particularly to a technique for manufacturing an antenna coil of a high-frequency non-contact IC card.
[0002]
[Prior art]
The non-contact type IC card includes an antenna coil in the card in order to perform communication between the IC chip in the card and the outside by electromagnetic coupling. Recently, an increasing number of non-contact IC cards that perform electromagnetic coupling at a frequency of more than a dozen MHz. The antenna coil suitable for this frequency band has a number of turns of several turns, and from the demand for thinness of the card and the ease of manufacturing, most of the coils are formed by etching the coil C on the base film B as shown in FIG. is there.
[0003]
[Problems to be solved by the invention]
However, when a coil is manufactured by etching, the area to be removed by etching is much larger than the area to be a coil, and there is a limit to reducing the material cost of the coil. In addition, a wet process such as etching is not preferable because of the relationship between waste liquid and environmental problems. Further, since the film thickness varies, the electrical characteristics of the coil vary greatly.
[0004]
From the above problems, there is a growing need to form an inexpensive antenna coil with a magnet wire.
[0005]
In recent years, an extraction method for forming an antenna coil with a magnet wire has been developed, but in this method, the wire material is embedded on the base film while being embedded, so the coil formation takes several tens of seconds per cycle. Therefore, it is difficult to contribute to the production of an inexpensive non-contact IC card because there are disadvantages such as that the production volume cannot be increased and the depreciation cost of the manufacturing equipment is high.
[0006]
Therefore, the subject of this invention is providing the manufacturing method and manufacturing apparatus which form an antenna coil more rapidly with a magnet wire.
[0007]
[Means for Solving the Problems]
According to the present invention, a stripper plate supported by a linear guide and movable up and down, guided by a hole formed in the stripper plate, and further biased by a spring, each having a protruding height from the stripper plate. An antenna coil winding comprising: a plurality of different guide pins; a plurality of non-rotatable lashing pins biased in one direction by a spring; and a cutter having a blade edge protruding from the stripper plate and fixed. A wire jig is obtained.
[0008]
Further, according to the present invention, as the winding jig , a plurality of guide pins having different heights are arranged coaxially from the inside to the outside in order from the highest , A winding step of forming an antenna coil by winding a wire rod so as to contact the shaft end surface of the outer guide pin and the outer periphery of the inner guide pin adjacent to the shaft end surface, and the stripper plate; The guide pin is protruded and pressed against the base film in the descending order, and the antenna coil is embedded and fixed in the base film, and the wire rod is cut by the cutter, and the folding pin is moved in the spring biasing direction. A method of manufacturing an antenna coil, comprising: a wire cutting step of forcibly moving and pulling and cutting a wire at a predetermined position Obtained.
[0009]
Preferably, the fixing step includes a step of laminating a thermosoftening resin on the base film in advance, heating the back side of the base film, softening the thermosoftening resin, and fixing the antenna coil. is there.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
2 and 3 are perspective views of a winding jig 1 for an antenna coil according to an embodiment of the present invention. The winding jig 1 includes a base block 2, a guide post 3, guide pins 4A, 4B, 4C, 4D, 4E, 4F, 5A, 5B, 6A, 6B, 7, and 8, a tangled pin 9, Block 10, plate 11, plate guides 12, 13, compression springs 14A, 14B, 14C, 14D, 14E, 14F, 15A, 15B, 16A, 16B, 17, 18, 19, stripper plate 20, and guide A bush 21, a cam follower 22, a stopper pin 23, a tension spring 24, guide posts 25 and 26, washers 27-1, 27-2, 27-3, 27-4, and a cutter 28 are provided. Yes.
[0011]
The guide post 3 is fixed vertically to the base block 2 and forms a linear motion guide in cooperation with a guide bush 21 fixed to the stripper plate 20. The guide pins 4A, 4B, 4C, 4D, 4E, 4F, 5A, 5B, 6A, and 6B are arranged on the same axis and can move vertically with respect to the stripper plate 20.
[0012]
Compression springs 14A, 14B, 14C, 14D, 14E, 14F, 15A, 15B, 16A, 16B, 17, 18 are guide pins 4A, 4B, 4C, 4D, 4E, 4F, 5A, 5B, 6A, 6B, respectively. 7 and 8 are compressed by the base block 2 and the guide pins 4A, 4B, 4C, 4D, 4E, 4F, 5A, 5B, 6A, 6B, 7, and 8 are stripper plates 20 It is energized to the lower surface of.
[0013]
Since the bald pin 9 is inserted into the hole of the block 10 and the chamfered portion 9A of the jaw is in contact with the surface 10A of the block, the bald pin 9 can move along the hole of the block 10 and cannot rotate. It has become.
[0014]
The compression spring 19 is compressed by the jaw portion of the bald pin 9 and the base block 2 and biases the jaw portion of the bald pin 9 against the lower surface of the block 10. The block 10 is fixed to a plate 11, and the plate 11 is guided by a plate guide 12 and a stripper plate 20, and the pinned pin 9, the block 10 and the plate 11 are movable in the guide direction as a unit.
[0015]
The stopper pin 23 is press-fitted into the plate 11 and regulates the amount of movement of the plate rod 11 together with the plate guide 12. The guide post 25 is fixed to the plate 11, the guide post 26 is fixed to the plate guide 12, and the tension spring 24 is hung on the guide post rods 25 and 26.
[0016]
The cam follower 21 is fixed to the stripper plate 20, and the vertical movement of the stripper plate is regulated by an external cam follower guide 29.
[0017]
Washers 27-1, 27-2, 27-3, 27-4 are arranged between the flange portion of the guide pin 4F and the stripper plate 20, and project the guide pins 4A, 4B, 4C, 4D, 4E, 4F. The height is adjusted. The thickness of each washer is in the order of 27-1>27-2>27-3> 27-4, and the thickness of 27-1 is equal to or less than the difference between the protruding heights of the guide pins 4A and 4B.
[0018]
The cutter 28 is fixed in a state where the cutting edge protrudes from the upper surface of the stripper plate 20.
[0019]
Next, a coil winding method using this jig will be described.
[0020]
When winding, in addition to the winding jig 1, a cam follower guide 29, a nozzle 30, a wire 31, a tension control device 32, and a pusher 33 are prepared.
[0021]
First, the stripper plate 20 is pushed down by the cam follower guide 29 so that the flange portion of each pin is biased to the lower surface of the stripper plate 20. Further, the pusher 33 pushes the plate 11 in the direction in which the tension spring 24 is extended.
[0022]
The winding process will be sequentially described with reference to FIGS. First, as shown in FIG. 4, a wire 31 is wound around the pin 9 by a nozzle 30. At this time, the position wound around the curled pin 9 is a low position close to the stripper plate 20.
[0023]
Next, the nozzle 30 is moved to pass the wire 31 through the guide pin 7 and then toward the guide pins 5A and 5B. The nozzle 30 is moved slightly above the tip of the guide pin 5B and on the track shown in FIG. 5, and the wire 31 is controlled so as to contact the shaft end surface of the guide pin 5A and the outer periphery of the guide pin 5B.
[0024]
Furthermore, the nozzle 30 is moved as shown in FIG. 6, and the wire 31 is passed through so as to contact the shaft end surface of the guide pin 4A and the outer periphery of the guide pin 4B. At this point, one turn of winding is formed.
[0025]
Further, similarly, as shown in FIG. 7, the second turn, the third turn, the fourth turn, and the fifth turn are wound. Since the height of each pin is adjusted by washers 27-1, 27-2, 27-3, and 27-4, the wire 31 is wound in a spiral shape.
[0026]
Next, as shown in FIG. 8, the nozzle 30 is passed through the guide pins 6 </ b> A and 6 </ b> B and the guide pin 8, and the wire 31 is wound around the bald pin 9.
[0027]
Finally, when the pusher 33 is returned as shown in FIG. 9, the tangled pin 9 is pulled by the tension spring 24 together with the plate 12, and tension is applied to the wire 31 forming the coil, and the wire 31 is detached from each pin. Is prevented and the shape of the coil is maintained.
[0028]
As described above, the coil 34 can be wound by moving the nozzle 30 on a predetermined track on the winding jig. The shape of the coil 34 to be wound can be arbitrarily set by arranging each guide pin. Further, since the tangled pin 9 applies tension to the wire 31, the coil 34 is not deformed even if the jig is moved after the winding process.
[0029]
Next, with reference to FIGS. 10-14, the fixing process which fixes the coil 34 to a base film is demonstrated.
[0030]
10 and 11, a cam follower guide 29, a pusher 33, a base film 35, robust and flat blocks 36 and 37, and a heater 38 for heating the block 37 are prepared. .
[0031]
First, the block 37 is heated to an appropriate temperature by the heater 38, and the base film 35 is placed on the block 37.
[0032]
The winding jig 1 on which the coil 34 is formed is fixed to the surface of the block 36 facing the block 37. Until this time, the stripper plate 20 remains pushed down by the cam follower guide 29.
[0033]
Next, the cam follower guide 29 is pushed down toward the block 37 as shown in FIG. Since each pin is urged by each compression spring, it abuts against the base film 35 in descending order of the protrusion height. In this process, the coil 34 wound spirally is also pressed against the base film 35 sequentially from a high position.
[0034]
When the cam follower guide 29 is further pushed down, the coil 34 is entirely pressed against the base film 35 by the stripper plate 20 and embedded in the base film 35 heated to an appropriate temperature. At the same time, as shown in FIGS. 13A and 13B, the cutter 28 bites into the coil 34 as much as it protrudes from the slipper plate 20 and makes a cut 39.
[0035]
Finally, when the plate 11 is pushed by the pusher 33 in the direction of being urged by the tension spring 24, the tangled pin 9 forcibly pulls the winding portion of the coil 34, and the notch 39 attached by the cutter 28 is used. 14A and 14B, an unnecessary portion of the coil 34 is cut off.
[0036]
The above is the fixing process of the coil 34. When the base film 35 is a relatively hard material, the coil 34 can be fixed by coating the surface of the base film 35 on which the coil 34 is fixed with a heat-softening resin. It becomes easy.
[0037]
When automating the above processes, it is easy to place jigs in parallel and control a plurality of nozzles with an XYZ table such as an automatic winding machine, and the pasting process can be processed in a lump. For this reason, an antenna coil can be manufactured at high speed and easily.
[0038]
【The invention's effect】
As described above, the antenna coil can be stably wound by the winding jig of the present invention, and the winding process and the fixing process can be performed separately in parallel, so that the process load is distributed and the winding process is performed. The cycle time of the wire / fixing process can be greatly reduced. In addition, since the multi-head configuration is easy, the tact time per product can be further shortened. Finally, since the antenna coil can be stably formed at high speed with a magnet wire with low material costs, the cost of winding and fixing the antenna coil of the non-contact IC card is greatly reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view for explaining a conventional non-contact type IC card.
FIG. 2 is a perspective view at the time of winding a winding jig of the antenna coil according to the embodiment of the present invention.
3 is a perspective view when the winding jig of FIG. 2 is not wound. FIG.
4 is a plan view showing a winding preparation completion state by the winding jig of FIG. 2; FIG.
5 is a plan view showing a start state of a winding process by the winding jig of FIG. 2; FIG.
6 is a plan view showing a state in which one turn of the winding process by the winding jig of FIG. 2 is completed. FIG.
7 is a plan view showing a state where the winding process by the winding jig of FIG.
8 is a plan view showing a state where a winding work is completed by the winding jig of FIG. 2; FIG.
9 is a plan view showing a winding tension imparting / winding holding state by the winding jig of FIG. 2; FIG.
10 is a perspective view of a fixing device for fixing a coil made by the winding jig of FIG. 2 to a base film.
11 is a front view showing a state where preparation for fixing work by the fixing device of FIG. 10 is completed.
12 is a front view showing an execution state of fixing work by the fixing device of FIG.
13A and 13B show a coil cutting preparation work after a fixing work, in which FIG. 13A is a plan view and FIG.
FIGS. 14A and 14B show a coil cutting completion state, where FIG. 14A is a plan view and FIG. 14B is an enlarged view of a portion A in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Winding jig 2 Base block 3 Guide post 4A, 4B, 4C, 4D, 4E, 4F, 5A, 5B, 6A, 6B, 7, 8 Guide pin 9 Tail pin 10 Block 11 Plate 12, 13 Plate guide 14A, 14B, 14C, 14D, 14E, 14F, 15A, 15B, 16A, 16B, 17, 18, 19 Compression spring 20 Stripper plate 21 Guide bush 22 Cam follower 23 Stopper pin 24 Tension spring 25, 26 Guide post 27-1, 27- 2, 27-3, 27-4 Washer 28 Cutter 29 Cam follower guide 30 Nozzle 31 Wire 32 Tension control device 33 Pusher 34 Coil 35 Base film 36, 37 Block 38 Heater 39 Cut

Claims (3)

A stripper plate supported by the linear motion guide and movable up and down; guided by a hole formed in the stripper plate; and further biased by a spring; each having a plurality of guide pins with different projecting heights from the stripper plate; A winding jig for an antenna coil, comprising: a plurality of non-rotatable bald pins biased in one direction by a spring; and at least one cutter having a blade edge protruding from the stripper plate and fixed. With those from the inside in order of a plurality of guide pins is high having the different heights as the winding jig according to claim 1, wherein arranged coaxially on the outside, the said guide pin and the tying pin, the outer guide Winding step of forming an antenna coil by winding a wire rod so as to contact the shaft end surface of the pin and the outer periphery of the inner guide pin adjacent thereto , and a predetermined path, and the stripper plate and the guide pin The fixing process of embedding and fixing the antenna coil in the base film in order of the protruding height, and cutting the wire rod with the cutter, and forcing the bald pin in the spring biasing direction A method of manufacturing an antenna coil, comprising: a wire cutting step of moving and pulling and cutting a wire at a predetermined position. The fixing step is a step of laminating a thermosoftening resin on the base film in advance, heating the back side of the base film, softening the thermosoftening resin, and fixing the antenna coil. 3. A method for manufacturing an antenna coil according to 2.

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