JP3893859B2 - Flat cable manufacturing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a flat cable manufacturing apparatus used for wiring of consumer equipment, OA equipment, in-vehicle electronic equipment, and the like.
[0002]
[Prior art]
Conventionally, for the purpose of saving space and weight, there has been a flat cable in which a plurality of linear conductors having a flat cross-sectional shape arranged in parallel with a gap between two insulating films are sandwiched. As a manufacturing method, there is a method in which a plurality of linear conductors arranged in parallel with a predetermined interval are sandwiched between two strip-shaped insulating films and both insulating films are welded to each other by ultrasonic waves.
[0003]
[Problems to be solved by the invention]
However, according to the conventional method for manufacturing a flat cable by ultrasonic welding, both insulating films on both sides of each linear conductor are intermittently ultrasonically welded in the length direction of the flat cable, such as water. When the conductive material enters the flat cable, there is a possibility that the linear conductors are short-circuited through the non-welded portion.
[0004]
Then, in view of the said problem, this invention aims at providing the manufacturing apparatus of the flat cable which prevents the short circuit between each linear conductor effectively.
[0005]
[Means for Solving the Problems]
Technical means for achieving the object described above is a plurality of linear conductors which are arranged in parallel with a predetermined interval, seen write sandwiched between two insulating films of the strip, facing each other at the respective linear conductors on both sides In a flat cable manufacturing apparatus for manufacturing a flat cable by ultrasonically welding both the insulating films in a continuous state in the length direction of the insulating film, an ultrasonic welding means for performing the ultrasonic welding is an ultrasonic An upstream horn and a downstream horn that impart sound wave vibration, and an upstream anvil and a downstream anvil that are respectively disposed opposite to the upstream horn and the downstream horn have a predetermined interval along the moving direction of the insulating film. The upstream side anvil and the downstream side anvil are respectively fixedly disposed and abutted against the insulating film of each anvil. Each part is formed on a flat surface, each of the upstream horn and the downstream horn includes a columnar vibration imparting body that is rotatably supported around an axis orthogonal to the moving direction of the insulating film, Protrusions that contact the insulating film on both sides of each linear conductor are formed on the outer peripheral surface of each vibration imparting body at a predetermined interval in the circumferential direction, and are ultrasonically welded by the upstream horn and the upstream anvil. The gap between the welded portions is that ultrasonic welding is performed by the downstream horn and the downstream anvil .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a first embodiment of the first invention will be described with reference to the drawings. FIG. 1 is a diagram showing a manufacturing apparatus used in a flat cable manufacturing method. In this manufacturing apparatus, a predetermined feeding line is shown. A plurality of conductor rolls 2 in which the linear conductor 1 is accommodated are provided on the most upstream side of P (moving direction), and a pair of film rolls 6 in which a pitch roller 3 and an insulating film 4 are accommodated and a pair are disposed on the downstream side. The sandwiching rollers 8 are sequentially provided.
[0011]
In each conductor roll 2, a copper or copper alloy linear conductor 1 is wound and stored in advance, and a plurality of conductor conductors 2 are provided in accordance with the number of linear conductors 1 arranged in parallel in the manufactured flat cable 10. Yes. And in this embodiment, since it is comprised so that the flat cable 10 with which the four linear conductors 1 may be arranged in parallel is manufactured, the four conductor rolls 2 are arrange | positioned. In the present embodiment, a rectangular conductor having a rectangular cross section is used as each linear conductor 1.
[0012]
The linear conductors 1 drawn out from the conductor rolls 2 are fed between the pair of sandwiching rollers 8 in a state of being aligned in a parallel state having a predetermined interval by the pitch roller 3.
[0013]
The pair of film rolls 6 are provided above and below the feeding line P, and each band-shaped insulating film 4 is wound and stored in advance. At this time, each insulating film 4 is constituted by a film-like substrate formed of a flexible and ultrasonic weldable resin such as polyethylene terephthalate (PET). The insulating films 4 drawn out from the pair of film rolls 6 are also fed between the sandwiching rollers 8.
[0014]
Here, each linear conductor 1 is fed to the ultrasonic welding section 12 disposed on the downstream side of the sandwiching roller 8 in a state of being sandwiched between the upper and lower insulating films 4.
[0015]
The ultrasonic welding part 12 is provided with the horn 14 and the anvil 15 which provide the ultrasonic vibration each provided in the position which pinches | interposes the feed line P from the upper and lower sides, as FIG. 1 thru | or FIG.
[0016]
The horn 14 provided on the upper side of the feeding line P has a width dimension larger than the width dimension of the insulating film 4, and the abutting portion that abuts on the insulating film 4 is a flat vibration imparting portion in the width direction. 14a, and the vibration imparting portion 14a can be slidably contacted with the outer surface (upper surface) of the upper insulating film 4 fed along the feeding line P over the entire width direction. It is arranged in a vertical posture. Thereby, the ultrasonic vibration generated by an ultrasonic vibration generation mechanism (vibrator or the like) (not shown) is applied to the horn 14 so that the horn 14 can vibrate in the width direction of the insulating film 4. .
[0017]
In addition, the anvil 15 is configured by a substantially columnar columnar body that is rotatably supported around an axis orthogonal to the feeding line P of the insulating film 4, and the parallel arrangement is provided on the outer peripheral surface thereof. In the regions corresponding to the outer positions of the linear conductors 1 between the respective linear conductors 1 and at both ends, the ridges 16 that are continuous along the circumferential direction are formed. The protruding portion 16 has a structure in which wide portions 16a and narrow portions 16b are alternately provided at a predetermined pitch along the circumferential direction.
[0018]
And the support shaft 15a provided along the axial center of the anvil 15 is arrange | positioned along the direction orthogonal to the said feed line P below the feed line P, and the support shaft 15a can rotate freely. When the insulating film 1 is fed along the feeding line P, the insulating film 1 is pressed against the lower surface of the insulating film 1 while sequentially pressing the protrusions 16 provided on the outer peripheral surface thereof. In accordance with the feeding of the insulating film 1, it is configured to rotate in synchronization with the feeding of the insulating film 1 by being driven to rotate or driven by a rotation driving unit (not shown).
[0019]
When the insulating film 4 sandwiching the plurality of linear conductors 1 is fed between the horn 14 and the anvil 15 in a state where ultrasonic vibration is applied to the horn 14, the vibration applying portion 14a of the horn 14 is provided. Is in sliding contact with the entire outer surface (upper surface) of the insulating film 4 in the width direction, and each protrusion 16 of the anvil 15 is directly below the vibration applying portion 14a except for the region where each linear conductor 1 is disposed ( The both sides of each linear conductor 1 are in contact with the outer surface (lower surface) of the insulating film 4, and ultrasonic vibration energy is applied to the two insulating films 4 in a state where the insulating films 4 are in pressure contact with each other, as shown in FIG. Insulating films 4 are ultrasonically welded to both sides of each linear conductor 1.
[0020]
Then, along with the feeding of the insulating film 4, each protrusion 16 of the anvil 15 comes into contact with the lower surface of the insulating film 4 while the vibration applying portion 14 a of the horn 14 is in sliding contact with the upper surface of the insulating film 4. Thus, both insulating films 4 are ultrasonically welded in a continuous state along the length direction.
[0021]
The flat cable 10 is formed by this ultrasonic welding, and then the flat cable 10 is sequentially wound and accommodated on the winding roll 19 via the guide roller 18.
[0022]
According to the manufacturing method of the flat cable 10 by the manufacturing apparatus configured as described above, the two insulating films 4 facing each other on both sides of each linear conductor 1 in the flat cable 10 are continued along the length direction thereof. Since the ultrasonic welding is performed in a state, even when a conductive material such as water enters the flat cable 10, the short-circuiting between the respective linear conductors 1 is effective without the possibility of short-circuiting between the respective linear conductors 1. Can be prevented.
[0023]
Further, as shown in FIG. 6, since the welded portion 21 ultrasonically welded is composed of a wide portion and a narrow portion, the welded portion in the flat cable 10 is compared with the structure in which the wide portion is ultrasonically welded over the entire length. The film strength of the film can be secured well, and the workability in terminal peeling is also good.
[0024]
FIG. 7 shows a second embodiment, in which the protrusions 16 in the anvil 15 are structured to have the same width in the circumferential direction. Other configurations are the same as described above.
[0025]
Therefore, in this case, as shown in FIG. 8, the welded portion 21 of the flat cable 10 is formed to have the same width along the length direction, and the conductive material such as water is flat cable as in the first embodiment. Even if it penetrates into 10, the short circuit between each linear conductor 1 can be effectively prevented, without the possibility that each linear conductor 1 may short-circuit each other.
[0026]
FIG. 9 shows a third embodiment, in which the protrusion 16 in the anvil 15 is configured to have the same width in the circumferential direction, and the recess 16c is formed in the protrusion 16 at a predetermined pitch along the circumferential direction. It is said that. Other configurations are the same as described above.
[0027]
Therefore, in this case, the welding portion 21 of the flat cable 10 has a structure in which the welding area in the width direction is different along the length direction as in the first embodiment, and the same effect as in the first embodiment is obtained. can get.
[0028]
FIG. 10 shows an embodiment of the second invention, which is configured in substantially the same manner as the above-described embodiment of the first invention. The same components are denoted by the same reference numerals, and the description thereof is omitted.
[0029]
That is, in the present embodiment, the upstream horn 24 and the downstream horn 25 to which the ultrasonic welding portion 12 applies ultrasonic vibration, and the upstream anvil 26 disposed to face the upstream horn 24 and the downstream horn 25, respectively. The downstream anvil 27 is provided with a predetermined interval along the feeding line P of the insulating film 4.
[0030]
The upstream side anvil 26 and the downstream side anvil 27 are fixedly arranged, and the upper surface of each anvil 26, 27, that is, the abutting portion that comes into contact with the insulating film 4 is formed as a flat surface.
[0031]
Further, the upstream horn 24 and the downstream horn 25 are provided with columnar vibration imparting bodies 29 and 30 supported by support shafts 29a and 30a so as to be rotatable around an axis perpendicular to the moving direction of the insulating film 4. As shown in FIG. 11, the protrusions 31 and 32 that are in contact with the insulating film 4 on both sides of each linear conductor 1 have the same pitch in the circumferential direction on the outer peripheral surface of each vibration imparting body 29 and 30. That is, they are formed to protrude with the same interval.
[0032]
Then, as shown in FIG. 12, the welded portion 33 is obtained by ultrasonic welding at a predetermined pitch in the length direction of the insulating film 4 by the upstream horn 24 and the upstream anvil 26, and a gap between the welded portions 33 is formed. As shown in FIG. 13, the downstream horn 25 and the downstream anvil 27 are filled with a welded portion 34 ultrasonically welded at a predetermined pitch in the length direction of the insulating film 4.
[0033]
Therefore, according to the manufacturing method of the flat cable 10 by the manufacturing apparatus of this embodiment, the both insulating films 4 facing each other on both sides of each linear conductor 1 in the flat cable 10 are connected to the upstream horn 24, the upstream anvil 26, and the downstream. The side horn 25 and the downstream anvil 27 are ultrasonically welded, and the welded portions 33 and 34 are in a state where the ultrasonic welded portions are continuous along the length direction of the insulating film 4. Even if it is in the case of intruding into the wire 10, it is possible to effectively prevent short-circuiting between the linear conductors 1 without fear of short-circuiting between the linear conductors 1.
[0034]
At this time, if the width of the protrusion 31 in the vibration imparting body 29 and the width of the protrusion 32 in the vibration imparting body 30 are configured to be different from each other, wide and narrow, respectively, the first embodiment of the first invention Similarly, the film strength can be secured satisfactorily and the workability in terminal peeling can be improved.
[0035]
FIG. 14 shows an embodiment of the third invention, which is configured in substantially the same manner as the above-described embodiment of the first invention. The same components are denoted by the same reference numerals, and the description thereof is omitted.
[0036]
That is, in this embodiment, the horn 36 and the anvil 37 in the ultrasonic welding part 12 are each configured in a rectangular block shape, and are opposite to each other from both sides of each linear conductor 1 from both sides of both insulating films 4. A plurality of projecting portions 38 and 39 to be contacted are formed along the feeding line P with the same interval T as the width S along the feeding line P of the insulating film 4 at the projecting portions 38 and 39. Structure.
[0037]
Then, the two insulating films 4 are sandwiched between the protrusions 38 and 39 of the horn 36 and the anvil 37 and ultrasonically welded. After the intermittent welds 33 as shown in FIG. 12 are formed, the two insulating films 4 are moved in the moving direction. , And then by ultrasonic welding with both insulating films 4 sandwiched between the projections 38 and 39 of the horn 36 and the anvil 37, as shown in FIG. The gaps between the previous welded portions 33 are configured to be filled with the subsequent welded portions 34.
[0038]
Thereafter, the insulating film 4 is moved for a length L along the feeding line P of the horn 36 and the anvil 37, ultrasonic welding is performed in the same manner as described above, and the same operations are sequentially repeated.
[0039]
Therefore, according to the manufacturing method of the flat cable 10 by the manufacturing apparatus of this embodiment, the both insulating films 4 facing each other on both sides of each linear conductor 1 in the flat cable 10 are connected to the protrusions 38 of the horn 36 and the anvil 37. Each protrusion 39 is ultrasonically welded a plurality of times with the position shifted by a predetermined interval T, and the ultrasonic welded portion is continuous along the length direction of the insulating film 4 by each welded portion 33, 34. Even when a conductive material such as water penetrates into the flat cable 10, it is possible to effectively prevent a short circuit between the linear conductors 1 without fear of a short circuit between the linear conductors 1.
[0040]
15 to 18 show an embodiment of the fourth invention, which is configured in substantially the same manner as the above-described embodiment of the first invention. The same components are denoted by the same reference numerals, and the description thereof is omitted.
[0041]
That is, in the present embodiment, the upper surface of the anvil 41 in the ultrasonic weld 12 is formed in a flat shape having a predetermined length along the feeding line P of the insulating film 4. The horn 42 includes a columnar vibration imparting body 43 that is rotatably supported around an axis perpendicular to the feeding line P of the insulating film 4 as in the second embodiment of the invention, and also vibrates. The horn 42 provided with the imparting body 43 is configured to be reciprocally movable along the feeding line P of the insulating film 4.
[0042]
Further, on the outer peripheral surface of the vibration imparting body 43, as shown in the first embodiment of the first invention, the ridges 16 that are in contact with the insulating film 4 on both sides of each linear conductor 1 are continuously provided in the circumferential direction. Is formed.
[0043]
Then, as shown in FIG. 15, in the state where the horn 42 is positioned on the upstream end side of the feeding line P of the anvil 41, the unwelded portion of the both insulating films 4 sandwiching the linear conductors 1 is the feeding line of the anvil 41. P is moved so as to be positioned on the downstream end side.
[0044]
In this state, while ultrasonic welding is performed by the horn 42 and the anvil 41, the horn 42 is moved and operated until it is positioned on the downstream end side of the feed line P of the anvil 41 as shown in FIG. Here, both insulating films 4 located on the upper surface side of the anvil 41 are ultrasonically welded.
[0045]
Next, in a state where the horn 42 is slightly lifted, the insulating film 4 is moved by a predetermined length along the feed line P as shown in FIG. 17, and the unwelded portion is fed to the feed line P of the anvil 41. Located on the downstream end side.
[0046]
In this state, while ultrasonic welding is performed by the horn 42 and the anvil 41, the horn 42 is moved and operated until it is positioned on the upstream end side of the feed line P of the anvil 41 as shown in FIG. Here, both insulating films 4 located on the upper surface side of the anvil 41 are ultrasonically welded.
[0047]
Then, by repeating this operation, ultrasonic welding is sequentially performed in batch processing every predetermined range.
[0048]
Therefore, also by the manufacturing method of the flat cable 10 by the manufacturing apparatus of this embodiment, the ultrasonic welding part of the flat cable 10 will be in the continuous state along the length direction, and conductive materials, such as water, permeate into the flat cable 10. Even if it is a case where it does, there is no possibility that each linear conductor 1 may short-circuit each other, and the short circuit between each linear conductor 1 can be prevented effectively.
[0049]
In addition, since each protrusion 16 of the vibration imparting body 43 is configured in the same manner as in the first embodiment of the first invention, the film strength can be secured well as in the first embodiment of the first invention. At the same time, it is possible to exhibit the advantage that workability in terminal peeling is also improved.
[0050]
At this time, the structure of the protruding portion 16 may be the same as that of the second embodiment or the third embodiment of the first invention.
[0051]
Moreover, although it is set as the structure which moves the horn 42 side, the structure of the anvil 41 and the structure of the horn 42 are replaced, and the horn 42 side is made into the structure which has length along the feed line P, and the anvil 41 side is made. The structure of the anvil 15 as in each embodiment of the first invention may be adopted, and a structure that can be reciprocally moved along the feed line P may be used.
[0052]
Moreover, in each said embodiment, although the flat cable provided with the four linear conductors 15 is illustrated, the structure etc. provided with the five linear conductors 15 may be sufficient, and the linear conductor 15 The number of is not limited at all.
[0053]
【The invention's effect】
As described above, according to the flat cable manufacturing apparatus of the present invention, the ultrasonic welding means for performing ultrasonic welding includes the upstream horn and the downstream horn that impart ultrasonic vibration, the upstream horn, and the downstream horn. An upstream anvil and a downstream anvil which are respectively arranged to face the side horn, with a predetermined interval along the moving direction of the insulating film, and the upstream anvil and the downstream anvil are respectively fixedly arranged, The contact portions that contact the insulating film of the anvil are each formed on a flat surface, and the upstream horn and the downstream horn are columnar shapes that are rotatably supported about an axis perpendicular to the moving direction of the insulating film. Each of the vibration imparting bodies is provided with protrusions that are in contact with the insulating film on both sides of each linear conductor with a predetermined interval in the circumferential direction. Is, the gap between the upstream side horn and upstream anvil ultrasonic welded welded portion, by a structure that is ultrasonically welded on the downstream side horn and downstream anvil, both facing each other at each linear conductor sides The insulation film is ultrasonically welded in a continuous state in the length direction of the insulation film to produce a flat cable in which each linear conductor is sandwiched, and when a conductive material such as water enters the flat cable. However, there is an advantage that a short circuit between the linear conductors can be effectively prevented without causing a short circuit between the linear conductors.
[Brief description of the drawings]
FIG. 1 is a schematic explanatory view showing a flat cable manufacturing method and manufacturing apparatus according to a first embodiment of the first invention.
FIG. 2 is an enlarged view of a horn.
FIG. 3 is a left side view of the same.
FIG. 4 is an enlarged view of an anvil.
FIG. 5 is a left side view of the same.
FIG. 6 is a plan view of the manufactured flat cable.
FIG. 7 is a side view of an anvil according to a second embodiment of the first invention.
FIG. 8 is a plan view of the manufactured flat cable.
FIG. 9 is a side view of an anvil according to a third embodiment of the first invention.
FIG. 10 is a front view of an ultrasonic weld according to an embodiment of the second invention.
FIG. 11 is a left side view of the vibration imparting body.
FIG. 12 is a plan view of an insulating film in the same manufacturing process.
FIG. 13 is a plan view of the manufactured flat cable.
FIG. 14 is a perspective view of an ultrasonic weld according to an embodiment of the third invention.
FIG. 15 is an operation explanatory diagram according to the embodiment of the fourth invention.
FIG. 16 is an operation explanatory diagram according to the embodiment of the fourth invention.
FIG. 17 is an operation explanatory diagram according to the embodiment of the fourth invention.
FIG. 18 is an operation explanatory diagram according to the embodiment of the fourth invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Linear conductor 4 Insulating film 10 Flat cable 12 Ultrasonic welding part 14 Horn 15 Anvil 16 Projection part 24 Upstream horn 25 Downstream side horn 26 Upstream side anvil 27 Downstream side anvil 29 Vibration imparting body 30 Vibration imparting body 31 Protrusion 32 Projection 36 Horn 37 Anvil 38 Projection 39 Projection 41 Anvil 42 Horn 43 Vibration imparting body

Claims (1)

A plurality of linear conductors arranged in parallel at a predetermined interval are sandwiched between two strip-shaped insulating films, and the two insulating films facing each other on both sides of each linear conductor are continuously arranged in the length direction of the insulating film. In a flat cable manufacturing apparatus that manufactures a flat cable by ultrasonic welding in a state where
The ultrasonic welding means for performing the ultrasonic welding includes an upstream horn and a downstream horn that impart ultrasonic vibrations, and an upstream anvil and a downstream anvil that are disposed to face the upstream horn and the downstream horn, respectively. And having a predetermined interval along the moving direction of the insulating film,
The upstream side anvil and the downstream side anvil are each fixedly arranged, and contact portions that are in contact with the insulating film of each anvil are respectively formed on a flat surface,
The upstream horn and the downstream horn are each provided with a columnar vibration imparting body that is rotatably supported around an axis perpendicular to the moving direction of the insulating film, on the outer peripheral surface of each vibration imparting body, Protrusions that are in contact with the insulating film on both sides of each linear conductor are formed with a predetermined interval in the circumferential direction,
An apparatus for producing a flat cable, wherein a gap between welded portions ultrasonically welded by an upstream horn and an upstream anvil is ultrasonically welded by a downstream horn and a downstream anvil.

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