JP2011210584A - Flat cable manufacturing method and its manufacturing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flat cable manufacturing method capable of covering a plurality of conductors with a pair of insulating films while regulating at a designated pitch spacing, and its manufacturing device.SOLUTION: The plurality of flat square conductors 2 arranged in parallel by being parallel with a conductor moving direction A is moved by displacing in a direction slantly crossed with a conductor-moving direction A toward a groove 7a of a conductor guide plate 7 from a groove 6a of a conductor guide roll 6, and are regulated at the designated pitch spacing Pby pushing one end face of the flat square conductor 2 to one wall face 7b of the groove 7a. The flat square conductors 2 regulated at the designated pitch spacing Pare heated and welded by holding between the pair of insulating films 3, 3 which are pressed down with a pair of upper and lower heat rolls 4, 4. Thus, the flat cable 1 wherein the plurality of flat square conductor 2 are covered with insulating films 3, 3 can be manufactured.

Description

  The present invention relates to a flat cable manufacturing method and a manufacturing apparatus therefor, for example, used for wiring various electrical components mounted in a vehicle or wiring in electrical equipment.

Conventionally, as a method and apparatus for manufacturing the flat cable, for example, a previously proposed flat cable slitting method (see Patent Document 1), a flat conductor 52 as shown in FIG. The manufacturing method using the apparatus which manufactures the flat cable 51 by pinching is disclosed.
More specifically, in this apparatus, a plurality of flat conductors 52 arranged in parallel with the conductor transfer direction A are sandwiched between insulating films 53 and 53 pressed by a pair of upper and lower heat rolls 54 and 54. However, it is said that the flat cable 51 can be manufactured by heating and welding the insulating films 53 and 53 sandwiched with the flat conductor 52 by the heat rolls 54 and 54.

However, the purpose of miniaturization and cost reduction of the flat cable, be pitch the pitch P ₃ of the rectangular conductor 52 has been strongly desired. In this case, there are the following problems.
That is, as to the pitch P ₃ of the rectangular conductor 52 becomes narrow, but will be rectangular conductor 52 adjacent approach each other, in order to maintain a predetermined dielectric strength, the rectangular conductor 52 out of a predetermined pitch tolerance must not.

Therefore, when the guide roll 57 is guided to an ideal state where the horizontal width center of the flat conductor 52 and the center of the groove portion 57a of the guide roll 57 coincide with each other (see a in FIG. 9), high pitch accuracy is required for the guide roll 57. Since the horizontal width of the flat conductor 52 has a tolerance (P ₃ ± 0.03 mm), if the groove width of the groove 57a is set to the maximum tolerance width (P ₃ +0.03 mm) of the flat conductor 52, the flat conductor 52 insertion position is easily displaced in the width direction in the groove 57a, it is difficult to cover the rectangular conductor 52 of the plurality of leave insulating film 53 was kept at a predetermined pitch P _3.
Further, when the adjacent rectangular conductors 52 have the narrowest width within the conductor tolerance and are displaced in the direction away from or in the width direction of the groove 57a, the pitch interval (P ₃ ± 0.06 mm) is the same as the tolerance width. Shifts (see b in FIG. 9). In this state, by the precision of the groove 57a may exceed the tolerance of the pitch P _3, it is difficult to maintain a predetermined pitch P _3.

JP 7-235229 A

  An object of the present invention is to provide a flat cable manufacturing method and a manufacturing apparatus therefor that can coat a plurality of conductors with a pair of insulating films while being regulated at a predetermined pitch interval.

The present invention heats and welds a plurality of conductors arranged in parallel in parallel to the conductor transfer direction between a pair of insulating films pressed by a pair of upper and lower heat rolls, In the flat cable manufacturing method covered with each insulating film, a conductor guide member for restricting each conductor is disposed at a position spaced apart from the direction perpendicular to the conductor transfer direction on the upstream side of each heat roll. The conductor guide member is composed of a first guide member disposed toward a contact portion where each of the heat rolls contacts and a second guide member disposed on the upstream side of the first guide member, A plurality of groove portions into which the conductor is inserted in the conductor transfer direction are arranged at predetermined intervals on the surface of the guide member that guides the conductor, and each guide member is orthogonal to the conductor transfer direction. Displaced in a direction that obliquely intersects the conductor transfer direction with the conductors transferred from the grooves of the first guide member toward the grooves of the second guide member. And a flat cable manufacturing method in which the first guide member is pressed against one side wall surface of each groove and regulated to a predetermined pitch interval.
As a result, each conductor can be displaced in a direction obliquely intersecting the conductor transport direction by each guide member and can be transported while being pressed against one side wall surface of each groove. Can be prevented from being displaced. As a result, a plurality of conductors can be covered with a pair of insulating films while being accurately regulated at a predetermined pitch interval.

As an aspect of the present invention, each of the conductors can be displaced by a displacement amount corresponding to a movement in a direction in which the conductor is pressed against one side wall surface of the groove portion of the first guide member by the guide members.
Thereby, each conductor is displaced in a direction in which it is pressed against one side wall surface of each groove portion of the first guide member by each guide member, and is transferred while being pressed against one side wall surface of each groove portion of the first guide member. Therefore, it is possible to prevent the positions and intervals of the conductors from being displaced. As a result, a plurality of conductors can be covered with a pair of insulating films while being accurately regulated at a predetermined pitch interval.

As an aspect of the present invention, the conductors can be displaced by the second guide member in a direction perpendicular to the conductor transfer direction and pressed against one side wall surface of each groove of the first guide member.
Thereby, since each conductor can be pressed against the one side wall surface of each groove portion of the first guide member by the second guide member and transferred, it is possible to prevent the position and interval of each conductor from being displaced. . As a result, a plurality of conductors can be covered with a pair of insulating films while being accurately regulated at a predetermined pitch interval.

As an aspect of the present invention, the first guide member may be formed in a thin plate shape, and the conductors may be guided toward the contact portions of the heat rolls by the first guide member.
Thereby, the distance of the front end side of a 1st guide member and the contact part of each heat roll becomes short, and it can send each conductor close to the contact part of each heat roll. As a result, a plurality of conductors can be covered with a pair of insulating films while being accurately regulated at a predetermined pitch interval.

  Further, as an aspect of the present invention, each conductor is guided toward the contact portion of each heat roll by the first guide member formed in a shape that gradually decreases in thickness toward the conductor transfer direction. Can do.

  Accordingly, the first guide member can be disposed closer to the contact portion of each thermal roll and the first guide member can be disposed on the upstream side of the contact portion of each thermal roll. , It can be fed closer to the contact portion of each heat roll. As a result, a plurality of conductors can be covered with a pair of insulating films while being accurately regulated at a predetermined pitch interval.

  The present invention also heats and welds a plurality of conductors arranged in parallel in parallel with the conductor transfer direction between a pair of insulating films pressed by a pair of upper and lower heat rolls. In the flat cable manufacturing apparatus for covering a conductor with each insulating film, a conductor guide member that regulates each conductor at a position spaced apart from the direction perpendicular to the conductor transfer direction on the upstream side of each heat roll. And the conductor guide member is composed of a first guide member disposed toward a contact portion where each of the heat rolls contacts and a second guide member disposed on the upstream side of the first guide member. A plurality of groove portions into which the conductors are inserted in the conductor transfer direction are arranged at predetermined intervals on the surface of each guide member that guides the conductors, and the guide members are arranged directly in the conductor transfer direction. Characterized in that it is a flat cable manufacturing apparatus was placed in relative displacement in the direction of.

  As a result, each conductor can be displaced in a direction obliquely intersecting the conductor transport direction by each guide member and can be transported while being pressed against one side wall surface of each groove. Can be prevented from being displaced. As a result, a plurality of conductors can be covered with a pair of insulating films while being accurately regulated at a predetermined pitch interval.

As an aspect of the present invention, each guide member can be displaced by a displacement corresponding to a movement in a direction in which the conductor is pressed against one side wall surface of the groove portion of the first guide member.
As a result, each conductor can be displaced in a direction in which it is pressed against one side wall surface of each groove portion of the first guide member by each guide member, and can be transferred while being pressed against one side wall surface of each groove portion. The position and interval of each conductor can be prevented from being displaced. As a result, a plurality of conductors can be covered with a pair of insulating films while being accurately regulated at a predetermined pitch interval.

Further, as an aspect of the present invention, the second guide member can be disposed by being displaced in a direction orthogonal to the conductor transfer direction.
Thereby, since each conductor can be pressed against the one side wall surface of each groove portion of the first guide member by the second guide member and transferred, it is possible to prevent the position and interval of each conductor from being displaced. . As a result, a plurality of conductors can be covered with a pair of insulating films while being accurately regulated at a predetermined pitch interval.

Further, as an aspect of the present invention, the first guide member is formed in a thin plate shape, and the first guide member is disposed such that a distal end side of the first guide member faces a contact portion of each heat roll. it can.
Accordingly, the leading end side of the first guide member can be disposed close to the contact portion of each heat roll and the conductor guide member can be disposed on the upstream side of the contact portion. The distance with the contact part of a roll becomes short, and each conductor can be sent close to the contact part of each heat roll. As a result, a plurality of conductors can be covered with a pair of insulating films while being regulated at a predetermined pitch interval.
wear.

As an aspect of the present invention, the first guide member can be formed in a shape that gradually decreases in thickness toward the conductor transfer direction.
Thereby, the front end side of the first guide member can be placed closer to the contact portion of each heat roll, and the first guide member can be disposed upstream of the contact portion. The distance with the contact part of each heat roll becomes still shorter, and each conductor can be sent closer to the contact part of each heat roll. As a result, a plurality of conductors can be covered with a pair of insulating films while being regulated at a predetermined pitch interval.

In the flat cable, for example, a plurality of conductors arranged in parallel are covered with a pair of insulating films, or one conductor is covered with a pair of insulating films, and then a portion of the resin where no conductor is sandwiched It can be configured by integrally welding or bonding the films together.
The conductor can be composed of a conductive metal foil such as a rectangular conductor or a round conductor. The insulating film can be formed of a thin synthetic resin film having flexibility and insulating properties.

  According to this invention, each conductor guided by each groove of the first guide member and each groove of the second guide member is displaced in a direction obliquely intersecting the conductor transfer direction, and the first guide member Since each groove portion is pressed against one side wall surface and regulated to a predetermined pitch interval, the insertion position of each conductor inserted into each groove portion is not displaced in the width direction, and each conductor is accurately placed at a predetermined pitch interval. While being able to be covered with a pair of insulating films while being regulated, the pitch accuracy of the conductor can be improved.

The side view which shows the manufacturing method of the flat cable by a manufacturing apparatus. The top view which shows the width alignment method of the flat conductor by a manufacturing apparatus. Explanatory drawing which shows the state which pressed the flat conductor against the one side wall surface of the groove part. The enlarged side view which shows the part into which a flat conductor is pinched | interposed with respect to between heat rolls. The enlarged side view which shows the part which adjoined the conductor guide plate to the contact part of the heat roll. The top view which shows the conductor guide plate which regulates a flat conductor to predetermined pitch space | interval. The top view which shows the other width alignment method of a flat conductor. The side view which shows the manufacturing method of the conventional flat cable. Explanatory drawing which shows the state which a flat conductor displaces to the width direction.

FIG. 1 is a side view showing a manufacturing method of the flat cable 1 by the manufacturing apparatus 10, FIG. 2 is a plan view showing a method of shifting the flat conductor 2 by the manufacturing apparatus 10, and FIG. 3 shows one side wall surface of the flat conductor 4 in the groove 7 a. explanatory view showing a state pressed against the 7b, Figure 4 is an enlarged side view showing a portion where the rectangular conductor 2 is sandwiched to between hot rolls 4,4, 5 on the contact portion B ₂ of the thermo roll 4,4 enlarged side view showing a portion where the conductive guide plate 7 is close, FIG. 6 is a plan view showing a conductor guide plate 7 for regulating the rectangular conductor 2 at predetermined pitch intervals P _3.

  The flat cable manufacturing method according to the embodiment includes a plurality of rectangular conductors arranged in parallel with the conductor transfer direction A (the arrow direction shown in FIGS. 1 and 2) supplied from the conductor supply unit a of the manufacturing apparatus 10. 2 is made closer to the center by the conductor guide rolls 5 and 6 arranged between the conductor supply part a and the laminating part b, and the conductor guide roll 6 arranged on the upstream side of the laminating part b The thin plate-shaped conductor guide plate 7 is relatively displaced in a direction orthogonal to the conductor transfer direction A (left side of the conductor transfer direction A).

Said displaced flat conductor 2, is restricted to a predetermined pitch interval P ₃ with respect to the direction perpendicular to the conductor conveying direction A by the conductive guide plate 7 disposed on the upstream side of the lamination unit b.

The rectangular conductor 2 which is restricted to a predetermined pitch distance P _3, the pressure-while sandwiching between the pair of insulating films 3, 3 are held down by the lamination unit vertical pair of hot rolls 4,4 disposed b A pair of insulating films 3 and 3 are integrally covered on both upper and lower surfaces of a conductor group 2A in which a plurality of flat conductors 2 are arranged in parallel in parallel with the conductor transfer direction A by heating and welding.
Thereby, the flat cable 1 with which the several flat conductor 2 was coat | covered with the insulating films 3 and 3 can be manufactured.

  The manufacturing apparatus 10 for manufacturing the flat cable 1 includes a conductor supply unit a that supplies a plurality of flat conductors 2 arranged in order from the upstream side in the conductor transfer direction A, a conductor guide roll 5, a conductor guide roll 6, A laminating section b for covering a pair of insulating films 3 and 3 on both upper and lower surfaces of a conductor group 2A formed by arranging a thin plate-like conductor guide plate 7 and a flat conductor 2 in parallel; and a pair of upper and lower film supply sections c. It consists of and.

  The conductor supply part a is composed of a conductor supply device (not shown) arranged on the upstream side in the conductor transfer direction A. That is, a plurality of rectangular conductors 2 formed in a rectangular cross section supplied from the conductor supply device are supplied toward the laminate processing portion b while being arranged in parallel in parallel with the conductor transfer direction A.

The laminating part b is composed of a pair of upper and lower heat rolls 4 that pressurize and heat a portion where the flat conductor 2 and the insulating film 3 are overlapped in the thickness direction (see FIGS. 4 and 5).
The heat roll 4 is formed to be longer than the lateral width of the insulating film 3 and is rotated synchronously in the conductor transfer direction A by a motor (not shown).

The pair of upper and lower heat rolls 4 are arranged orthogonal to the conductor transfer direction A of the flat rectangular conductor 2 so as to face both the upper and lower surfaces of the portion where the conductor group 2A and the insulating film 3 are overlapped.
That is, the heat rolls 4 and 4 are supplied from the insulating film 3 supplied from the film supply part c provided above the laminating part b and the film supply part c provided below the laminating part b. that the insulating film 3, while the hold-down at a circumferential surface which is smoothly formed of a heat roll 4, the conductor guide plate 7 by an insulating the plurality of flat conductors 2, which are restricted to a predetermined pitch P ₃ films 3 and 3 Can be sandwiched between.

  Further, the heat rolls 4 and 4 generate heat while pressing the pair of insulating films 3 and 3 pressed by the heat rolls 4 and 4 onto the upper and lower surfaces of the conductor group 2A formed by arranging a plurality of flat conductors 2 in parallel. By heating the insulating films 3 and 3 to a temperature at which the insulating films 3 and 3 are melted, the portions of the insulating films 3 and 3 that are in contact with each other can be integrally welded.

The insulating film 3 is formed on the lateral width of one entire surface of the conductor group 2A made to regulate the plurality of flat conductors 2 at a predetermined pitch interval P ₃ (top or bottom) is covered with the conductor guide plate 7 Yes.

Between the conductor supply unit a and lamination portion b is a rectangular conductor 2 supplied from the conductor supply unit a, for regulating the pitch P ₁ at the time of being supplied from the conductor supply unit a conductor guide A roll 5 and a conductor guide roll 6 for narrowing the pitch to a pitch interval P ₂ narrower than the pitch interval P ₁ of the conductor guide roll 5 are arranged.
The conductor guide rolls 5 and 6 are formed longer than the lateral width of the conductor group 2A in which a plurality of flat conductors 2 are arranged in parallel.

  The conductor guide roll 5 is disposed on the downstream side of the conductor supply part a and upstream of the conductor guide roll 6, and is in contact with the flat conductor 2 transferred from the conductor supply part a toward the laminating part b. Is rotated in the conductor transfer direction A.

A concave groove 5 a for inserting the flat conductor 2 in the longitudinal direction is formed in parallel with the conductor transfer direction A on the peripheral surface of the conductor guide roll 5. Groove portion 5a are arrayed at a predetermined pitch interval P ₁ with respect to the axial direction perpendicular to the conductor conveying direction A (see a portion shown in FIG. 2).

That is, the rectangular conductor 2 supplied from the conductor supply unit a is inserted from the upstream side with respect to the groove 5a of the conductor guide roll 5, is regulated to the pitch P ₁ at the time of being supplied from the conductor supply unit a.

  The conductor guide roll 6 is arranged on the downstream side of the conductor guide roll 5 and on the upstream side of a conductor guide plate 7 to be described later, and the rectangular conductor 2 transferred from the conductor supply part a to the laminating part b. Is rotated in the conductor transfer direction A.

Further, a concave groove 6 a for inserting the flat conductor 2 in the longitudinal direction is formed in parallel with the conductor transfer direction A on the peripheral surface of the conductor guide roll 6. The grooves 6a are arrayed at a predetermined pitch P ₂ with respect to the axial direction perpendicular to the conductor conveying direction A (see part b shown in FIG. 2).

Pitch P ₂ of the groove 6a is narrower than the pitch P ₁ of the groove 5a of the conductor guide roll 5, it is set to the pitch interval P ₂ which matches the pitch P ₃ of the groove 7a of the conductive guide plate 7 to be described later ing.

That is, the rectangular conductor 2 supplied to the downstream side of the conductor guide roll 5 is inserted from the upstream side with respect to the groove 6 a of the conductor guide roll 6, and evenly left and right toward the center of the transfer path for transferring the rectangular conductor 2. It is justified. And narrower than the pitch P ₁ of the groove 5a of the conductor guide roll 5, is regulated to the pitch P ₂ which matches the pitch P ₃ of the groove 7a of the conductive guide plate 7 to be described later.

  The flat conductor 2 is pressed against the grooves 5a and 6a of the conductor guide rolls 5 and 6 by a tensile force applied when it is transferred in the conductor transfer direction A. Further, the groove width and depth of the groove portions 5a and 6a are set to be the same as the groove width and groove depth of a groove portion 7a described later.

The conductor guide plate 7 is disposed on the downstream side of the conductor guide roll 6 and on the upstream side of the contact point B ₂ where the peripheral surfaces of the heat rolls 4 and 4 are in contact with each other. The part 7 b is arranged toward the contact part B ₂ of the heat rolls 4 and 4.

Distal end that is proximate to the contact portion B ₂ of the conductive guide plate 7 (side surface) is beak shape in which the thickness gradually becomes thinner toward the downstream side from the upstream side of the conductor conveying direction A (or wedge, triangular) Is formed. The plane of the conductor guide plate 7 is formed wider than the lateral width of the conductor group 2A in which a plurality of flat conductors 2 are arranged in parallel.

As shown in FIG. 6, a concave groove 7a for inserting the flat conductor 2 in the longitudinal direction is arranged in parallel with the conductor transfer direction A on the top surface of the conductor guide plate 7 on the leading end side for guiding the flat conductor 2. Is formed.
Also, the grooves 7a are arrayed at a predetermined pitch interval P ₃ with respect to the direction perpendicular to the conductor conveying direction A.

The groove width of the groove portion 7 a is formed such that the interval between both side wall surfaces 7 b of the groove portion 7 a is wider than the lateral width of the flat conductor 2. Further, the groove depth of the groove portion 7a is formed such that the both side wall surfaces 7b of the groove portion 7a are higher than the thickness of the flat conductor 2 (see the c portion in FIG. 2 and the d portion in FIG. 6).
That is, since a gap is formed between both side end surfaces of the flat conductor 2 and both side wall surfaces 7b of the groove portion 7a, the flat conductor 2 is smoothly transferred along the groove portion 7a of the conductor guide plate 7 in the conductor transfer direction A. be able to.

  The guide of the rectangular conductor 2 by the conductor guide roll 6 and the conductor guide plate 7 will be described in detail. The rectangular conductor 2 is directed from the groove 6a of the conductor guide roll 6 toward the groove 7a of the conductor guide plate 7 with respect to the conductor transfer direction A. It is transported in a direction that crosses diagonally.

For this reason, one side end surface of the flat conductor 2 is pressed against the one side wall surface 7b of the groove portion 7a of the conductor guide plate 7, and transferred in a direction parallel to the conductor transfer direction A along the one side wall surface 7b of the groove portion 7a. Therefore, the position and interval of the flat conductor 2 can be prevented from being displaced.
As a result, it is possible to cover the rectangular conductor 2 a plurality of, the pair of insulating films 3, 3 while regulating the predetermined pitch P _3. Moreover, the influence by the pitch tolerance of the flat conductor 2 and the groove part 7a is small, and the pitch accuracy of the flat conductor 2 can be improved.

That is, one end face (left end face) of the flat conductor 2 inserted in the groove 6a of the conductor guide roll 6 is pressed against one side wall face 7b (left wall face) of the groove 7a of the conductor guide plate 7, and the groove because along one side wall 7b of 7a is transported in a direction parallel to the conductor conveying direction a, it is restricted to a predetermined pitch interval P ₃ (see FIG. 3).

For example, as shown in b of FIG. 9, the tolerance of the rectangular conductor 52 and the groove 57a, even difficult to keep the pitch P ₃ of the flat conductor 52 constant, as shown in FIGS. 3 and 4, The rectangular conductor 52 is displaced in a direction obliquely intersecting with the conductor transfer direction A by the conductor guide roll 6 of the present embodiment, and one side end surface of the rectangular conductor 2 is changed to one side wall surface 7b of the groove portion 7a of the conductor guide plate 7. Press.
Thus, the improved pitch accuracy of the rectangular conductor 52, it is possible to cover the rectangular conductor 52 of the plurality of leave insulating film 53 was kept at a predetermined pitch P _3.

  The conductor guide roll 6 is displaced in the width direction with respect to the conductor guide plate 7 by a dimension in which one end face of the flat conductor 2 is pressed along the one side wall surface 7b of the groove 7a. When the side end surface is pressed against the one side wall surface 7b of the groove 7a, the flat conductor 2 is not deformed in the width direction and is pressed with a force that does not cause damage.

In this embodiment, the center line passing through the groove center of the groove portion 6a of the conductor guide roll 6 is 3 ° to the left in the conductor transfer direction A with respect to the center line passing through the groove center of the groove portion 7a of the conductor guide plate 7. It is displaced by the angle of.
The displacement angle may be changed to a desired angle according to the width of the flat conductor 2 and the grooves 6a and 7a or the tolerance of the flat conductor 2 and the grooves 6a and 7a.

The film supply part c is composed of a film supply apparatus (not shown) arranged above and below the laminating part b. That is, supplying the insulating films 3, 3 to be supplied to the contact portion B ₂ from the upstream side of the conductor conveying direction A against the thermo roll 4, 4 pairs of lamination portion b from the film supply device.

Further, when the flat conductor 2 is transferred in the conductor transfer direction A, the flat conductor 2 tends to be displaced in the width direction, but one side end face of the flat conductor 2 comes into contact with the one side wall surface 7b of the groove portion 7a, so It is restricted to the pitch interval _{P 3.} Furthermore, it is possible to prevent the flat conductor 2 from jumping out of the groove 7 a of the conductor guide plate 7.
The tip end portion B ₃ in which the groove 7a is formed in the conductor guide plate 7, the peripheral surface of the hot roll 4, 4 are as close as possible to the contact portion B ₂ which is Taise'.
That is, as shown in FIG. 4, the tip end B ₃ of the conductor guide plate 7, the distance D2 connecting the contact portion B ₂ of the heat roll 54, 54, the central portion B of the references 1 guide roll 57 _1, (see FIG. 8) the distance D1 connecting the contact portion _{B 2} of the heat roll 54 is arranged to be shorter than.
Accordingly, the rectangular conductor 2 inserted into the groove 7a of the conductive guide plate 7, the peripheral surface of the heat roll 4, 4 are straight feed guide to the vicinity of the contact portion B ₂ in contact pair.

A method for manufacturing the flat cable 1 using the manufacturing apparatus 10 will be described in detail below.
First, as shown in FIGS. 1 and 2, a plurality of flat conductors 2 supplied from the conductor supply part a are inserted into the groove part 5a of the conductor guide roll 5 from the upstream side and supplied from the conductor supply part a. to regulate the pitch interval P ₁ at the time that.

Next, the flat conductor 2 inserted into the groove 5 a of the conductor guide roll 5 is inserted into the groove 6 a of the conductor guide roll 6 from the upstream side, and the pitch interval becomes narrower than the pitch interval P ₁ of the conductor guide roll 5. At P ₂ , the pitch is made closer to the pitch interval P ₂ that coincides with the pitch interval P ₃ of the groove 7 a of the conductor guide plate 7.

Next, the rectangular conductor 2 inserted into the groove 6a of the conductor guide rolls 6, immediately before the lamination unit b, i.e., the groove of the conductive guide plate 7 which is disposed toward the contact portion B ₂ of the thermo roll 4,4 It is inserted into 7a from the upstream side and transferred from the groove 6a of the conductor guide roll 6 toward the groove 7a of the conductor guide plate 7 in a direction obliquely intersecting the conductor transfer direction A.

Thereby, one side end surface of the flat conductor 2 inserted into the groove portion 7a is pressed against the one side wall surface 7b of the groove portion 7a, and the direction parallel to the conductor transfer direction A along the one side wall surface 7b of the groove portion 7a. because is transferred toward the flat rectangular conductor 2 is restricted to a predetermined pitch P _3.

As shown in FIGS. 4 and 5, the tip end side end B ₃ where the groove 7 a of the conductor guide plate 7 is formed is as close as possible to the contact B ₂ of the heat rolls 4, 4. rectangular conductor 2 inserted into the groove 7a of the conductive guide plate 7, the peripheral surface of the heat roll 4, 4 are guided infeed reliably close to the contact portion B ₂ in contact pair.

Therefore, it can be coated with a flat angle pitch P ₃ hardly displaced conductor 2, insulating while regulating the flat conductor 2 at predetermined pitches P ₃ films 3, 3 are sandwiched between the insulating films 3 and 3 .

  Next, pressurizing and heating while pressing the pair of insulating films 3 and 3 simultaneously with the hot rolls 4 and 4 on the upper and lower surfaces of the conductor group 2A formed by arranging the flat conductors 2 in parallel, the insulating films 3 and 3 The parts that contact each other are welded together.

  When the portion where the flat conductor 2 and the insulating film 3 are overlapped by the heat rolls 4 and 4 is pressed in the thickness direction, the portion where the flat conductor 2 is sandwiched is compressed in the thickness direction by the elasticity of the insulating film 3, In the portion where the flat conductor 2 is not sandwiched, the upper and lower insulating films 3 and 3 are integrally bonded by heat.

  Thereby, the flat cable 1 by which the insulating films 3 and 3 were integrally coat | covered with respect to the upper and lower surfaces of 2 A of conductor groups which arrange | position the flat conductor 2 in parallel can be manufactured.

  As described above, the flat conductor 2 is transferred by being displaced from the groove 6a of the conductor guide roll 6 toward the groove 7a of the conductor guide plate 7 in a direction obliquely intersecting the conductor transfer direction A, and inserted into the groove 7a. One side end face of the formed flat conductor 2 is pressed against one side wall face 7b of the groove 7a.

That is, the flat conductor 2 inserted into the groove 7a of the conductor guide plate 7 is transferred in a direction parallel to the conductor transfer direction A along the one side wall surface 7b of the groove 7a. It is regulated of the pitch interval P _3.

Therefore, when sandwiching the rectangular conductor 2 between the insulating films 3 and 3, the flat angle pitch P ₃ hardly displaced conductor 2, insulating while regulating the flat conductor 2 at predetermined pitches P ₃ films 3 and 3 The pitch accuracy of the flat conductor 2 can be improved.

Further, the rectangular conductor 2 and the groove portions 6a, regardless tolerance of 7a, the pitch interval P ₃ of rectangular conductor 2 along the one side wall surface 7b of the groove 7a is constant, if based on the position and spacing component Can be easily designed and managed.

  Further, since the flat conductor 2 is inserted into the groove 6a of the conductor guide roll 6 and pressed against the smooth bottom peripheral surface of the groove 6a, the contact resistance applied when the flat conductor 2 is reduced is small. The conductor 2 can be smoothly displaced.

  The pitch accuracy of the flat conductor 2 along the one side wall surface 7b of the groove 7a depends on the machining accuracy of the flat conductor 2 regardless of the width dimension accuracy of the flat conductor 2, and the pitch accuracy is ± 0. A highly accurate guide of 01 mm can be realized.

Further, when the apparatus disclosed in Patent Document 1 is used, as shown in FIG. 8, the flat conductor 52 is pushed down by a displacement corresponding to the radius of the guide roll 57 and pressed against the lower heat roll 54. Since the lower insulating film 53 is contacted in advance, heat exchange between the flat conductor 52 and the lower insulating film 53 is started first.
That is, since the start timing of the thermal contraction of the upper and lower insulating films 53, 53 is shifted, the insulating film 53 is easily wrinkled when the insulating films 53, 53 are thermally welded, and the fineness between the insulating films 53, 53 is small. Problems such as intrusion of various bubbles are also likely to occur.

However, in this embodiment, the conductor guide plate 7 is disposed so that the tip end B ₃ of the conductor guide plate 7 is close to the contact point B ₂ of the heat rolls 4, 4. The distance between the tip end side B ₃ of the heat roller 4 and the contact part B ₂ of the heat rolls 4 and 4 is shortened, and the flat conductor 2 is sent close to the contact part B ₂ of the heat rolls 4 and 4. 3 comes into contact with the heat rolls 4 and 4 almost simultaneously.

  That is, since the heat shrinkage of the insulating films 3 and 3 is simultaneously started by the heat generation action of the heat rolls 4 and 4, when the insulating films 4 and 4 are heated and welded, the insulating film 3 is not easily wrinkled and is insulated. Since the number of fine bubbles entering between the films 3 and 3 is reduced, the quality can be improved.

FIG. 7 is a plan view showing another width adjustment method of the flat conductor 2.
In the manufacturing apparatus 10 of this example, the conductor guide rolls 5 and 6 are arranged so as to be displaced in a direction orthogonal to the conductor transfer direction A (left side of the conductor transfer direction A) and inserted into the groove portion 7a of the conductor guide plate 7. The conductor 2 is displaced by the conductor guide rolls 5 and 6 in a direction obliquely intersecting the conductor transfer direction A.

  The flat conductor 2 is transferred obliquely from the groove 6a of the conductor guide roll 6 toward the groove 7a of the conductor guide plate 7, and one side end face of the flat conductor 2 inserted into the groove 7a is connected to one side wall surface 7b of the groove 7a. Press against.

Thus, since the rectangular conductor 2 is restricted to a predetermined pitch P _3, when sandwiched between the insulating films 3 and 3, without pitch P ₃ of the flat conductor 2 is displaced, the embodiment substantially Equivalent actions and effects can be achieved.
Further, the conductor guide plate 7 may be arranged by being displaced in a direction orthogonal to the conductor transfer direction A.

In the correspondence between the configuration of the present invention and the embodiment,
The first guide member of the present invention corresponds to the conductor guide plate 7 of the embodiment,
Similarly,
The second guide member corresponds to the conductor guide roll 6,
The present invention is not limited to the configuration of the above-described embodiment, but can be applied based on the technical idea shown in the claims, and many embodiments can be obtained.

In the embodiment, the example in which the conductor guide roll 6 is displaced in the direction orthogonal to the conductor transfer direction A has been described. For example, the conductor guide plate 7 is arranged in a direction orthogonal to the conductor transfer direction A (the left side of the conductor transfer direction A). Alternatively, it may be displaced to the right).
Moreover, although the example of arrangement | sequence of the groove parts 5a, 6a, 7a formed in the same groove width was demonstrated, you may arrange, for example, combining multiple groove parts 5a, 6a, 7a formed in different groove widths.
If the flat conductor 2 can be restricted to a position separated by a predetermined pitch interval, the groove depth of the groove portion 7a may be formed so as to be shallower than the flat conductor 2. .
The conductor guide rolls 5 and 6 may be rotated in the conductor transfer direction A by a motor (not shown).

B ₂ ... contact part B ₃ ... tip side end 1 ... flat cable 2 ... flat rectangular conductor 2A ... conductor group 3 ... insulating film 4 ... heat roll 5, 6 ... conductor guide roll 7 ... conductor guide plates 5a, 6a, 7a ... Groove 10 ... Manufacturing equipment

Claims (10)

Heating and welding a plurality of conductors arranged in parallel in parallel with the conductor transfer direction between a pair of insulating films pressed by a pair of upper and lower heat rolls, and each conductor with each insulating film In the flat cable manufacturing method for covering,
Arranged on the upstream side of each of the heat rolls is a conductor guide member that regulates each conductor at a position that is spaced at a predetermined interval with respect to a direction orthogonal to the conductor transfer direction,
The conductor guide member is composed of a first guide member disposed toward a contact portion where each of the heat rolls contacts, and a second guide member disposed on the upstream side of the first guide member,
A plurality of groove portions into which the conductor is inserted in the conductor transfer direction are arranged at a predetermined interval on a surface for guiding the conductor of each guide member,
Each guide member is disposed by being relatively displaced in a direction orthogonal to the conductor transfer direction,
The conductors transported from the groove portions of the first guide member toward the groove portions of the second guide member are displaced in directions obliquely intersecting the conductor transport direction, and the first guide member A flat cable manufacturing method, wherein the groove is pressed against one side wall surface and regulated to a predetermined pitch interval. The flat cable manufacturing method according to claim 1, wherein each of the conductors is displaced by a displacement amount corresponding to a movement in a direction in which the conductor is pressed against one side wall surface of the groove portion of the first guide member by the guide members. . 3. The flat cable manufacturing method according to claim 1, wherein the conductors are displaced by a second guide member in a direction perpendicular to a conductor transfer direction and pressed against one side wall surface of each groove of the first guide member. Forming the first guide member in a thin plate shape;
The flat cable manufacturing method as described in any one of Claims 1-3 which guides each said conductor toward the contact part of each said heat roll with the said 1st guide member. The said each conductor is guided toward the contact part of each said heat roll with the said 1st guide member formed in the shape where thickness becomes thin gradually toward the said conductor transfer direction. The flat cable manufacturing method as described in one. Heating and welding a plurality of conductors arranged in parallel in parallel with the conductor transfer direction between a pair of insulating films pressed by a pair of upper and lower heat rolls, and each conductor with each insulating film In the flat cable manufacturing equipment to cover,
Arranged on the upstream side of each of the heat rolls is a conductor guide member that regulates each conductor at a position that is spaced at a predetermined interval with respect to a direction orthogonal to the conductor transfer direction,
The conductor guide member is composed of a first guide member disposed toward a contact portion where each of the heat rolls contacts, and a second guide member disposed on the upstream side of the first guide member,
A plurality of groove portions into which the conductor is inserted in the conductor transfer direction are arranged at a predetermined interval on a surface for guiding the conductor of each guide member,
The flat cable manufacturing apparatus according to claim 1, wherein the guide members are relatively displaced in a direction orthogonal to the conductor transfer direction. The flat cable manufacturing apparatus according to claim 6, wherein each guide member is displaced by a displacement amount corresponding to a movement in a direction in which the conductor is pressed against one side wall surface of the groove portion of the first guide member. The flat cable manufacturing apparatus according to claim 6 or 7, wherein the second guide member is disposed by being displaced in a direction orthogonal to the conductor transfer direction. Forming the first guide member in a thin plate shape;
The flat cable manufacturing apparatus as described in any one of Claims 6-8 which has arrange | positioned the said 1st guide member toward the contact part of each said heat roll at the front end side of this 1st guide member. The flat cable manufacturing apparatus as described in any one of Claims 6-9 which formed the said 1st guide member in the shape which thickness becomes thin gradually toward the said conductor transfer direction.

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