JP2011233407A - Method and device for cutting flat cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and a device for cutting a flat cable, capable of steplessly, collectively, and finely adjusting intervals among a plurality of cutting blades.SOLUTION: The cam faces 8a of a plurality of cam parts 8 attached to a movable part 9 are made to descend vertically while being pressed against the slant faces 7b of a plurality of blade supporting parts 7 disposed under the cam parts 8, and the blade supporting parts 7 are horizontally moved in the same direction perpendicular to a transfer direction A by pressing force of the cam part 8. An adjoining cam part 8 against which the arm part 7a of the blade supporting part 7 is pressed is horizontally moved in the same direction, and the blade supporting part 7 which is under the cam part 8 and against which the cam part 8 is pressed is horizontally moved. Thereby, the intervals Wa of the cutting blades 6 adjacent to each other can be steplessly and collectively adjusted for expansion and contraction with respect to a width direction Y perpendicular to the transfer direction A.

Description

  The present invention relates to a flat cable cutting method and a cutting apparatus for cutting a flat cable used for wiring of various electrical components mounted in a vehicle or wiring in an electric device into a strip shape.

  Conventionally, as a method and apparatus for cutting the flat cable, for example, as shown in FIG. 7, there is a cutting slitter 60 that has already been proposed (see Patent Document 1). The cutting slitter 60 is arranged in a cutting section C set on a transfer path B for transferring the flat cable 51 on the downstream side of the manufacturing apparatus 50 for manufacturing the wide flat cable 51.

  That is, the insulating film 53, 53 in which a plurality of flat conductors 52 are sandwiched by the manufacturing apparatus 50 is heated and welded by a pair of upper and lower heating rolls 54, 54 to manufacture the flat cable 51, while being manufactured by the cutting slitter 60. The flat cable 51 is continuously cut into a strip shape in parallel with the transfer direction A.

  As shown in FIG. 8, the cutting slitter 60 includes a drum 67 in which a support shaft 62 that supports a blade support portion 63 to which a thin cutting blade 61 is attached and a groove portion 65 in which the cutting blade 61 is inserted is formed. It is comprised with the support shaft 66 to support.

  The cutting blade 61 is suspended from the lower end portion of the blade support portion 63 attached on the support shaft 62 with an interval corresponding to the cutting width for cutting the flat cable 51 into a strip shape. The groove portion 65 is formed between the opposing surfaces of the drum 67 attached on the support shaft 66 with an interval corresponding to the cutting blade 61.

  When finely adjusting the pitch interval of the cutting blade 61, the thickness or number of spacers 63a disposed between the blade support portions 63 is changed, or shims sandwiched between the blade support portions 63 and the spacers 63a. The position of the cutting blade 62 is finely adjusted in a direction parallel to the width direction of the flat cable 51 by changing the thickness or the number of the plates 63b.

  However, for example, in order to reduce the size and cost of the flat cable 51 manufactured in recent years, it is strongly desired to reduce the pitch of the flat conductor 52. However, since adjustment with high accuracy is required, It is difficult to prepare spacers 63a and shim plates 63b having thicknesses corresponding to the changes in advance. As a result, an error occurs in the cutting width of the flat cable 51 cut by the cutting slitter 60.

  In addition, a plurality of cutting blades 61 are attached on the support shaft 62 corresponding to the number of cuts of the flat cable 51 into strips, but when the cutting width of the flat cable 51 is adjusted, The pitch interval of the cutting blades 61 must be adjusted one by one, which takes time and labor for adjusting the cutting width. In addition, there is a problem that it takes time and effort to change the thickness and number of spacers 63a and to change the thickness and number of shim plates 63b.

Japanese Patent No. 2871770

  An object of this invention is to provide the flat cable cutting method and its manufacturing apparatus which can finely adjust the space | interval of several cutting blades collectively in a stepless manner.

According to the present invention, a flat cable formed by covering a plurality of conductors arranged in parallel in parallel with a transfer direction with a pair of insulating films is formed into a strip shape by a plurality of cutting blades in parallel with the transfer direction of the flat cable. A flat cable cutting method, wherein a cutting blade is attached to a lower end side perpendicular to the transfer direction above the flat cable transfer path, and an upper end side of the blade support portion. A plurality of pressed cam portions are arranged, and the cam surface formed on the lower end side of the cam portion is directed in a direction perpendicular to the transfer direction with respect to the inclined surface formed on the upper end side of the blade support portion. The arm portion formed by pressing and extending the upper end side of the blade support portion obliquely upward toward the direction orthogonal to the transfer direction is provided on the side surface of the adjacent cam portion disposed on the extension side of the arm portion. Each With the cam surface of each part pressed against the slope of each blade support part, the entire cam part is moved vertically up and down, and each cam part is moved up and down to correspond to the up and down movement. The blade support portions are moved horizontally in the same direction perpendicular to the transfer direction by a pressing force, and the cam portions pressed against the arm portions of the blade support portions are orthogonal to the transfer direction. Are moved horizontally in the same direction, and the individual movement amounts of the blade support portions are sequentially added as the movement amounts of the blade support portions arranged next to the blade support portions, and are attached to the blade support portions. The flat cable cutting method is characterized in that the interval between the cutting blades is adjusted in a direction perpendicular to the transfer direction.
In other words, with the cam surface of each cam part pressed against the slope of each blade support part, the entire cam part is moved vertically up and down to correspond to the vertical movement of each cam part. Each blade support is moved horizontally in the same direction perpendicular to the transfer direction by the pressing force. Further, each cam portion against which the arm portion of each blade support portion is pressed is moved horizontally in the same direction perpendicular to the transfer direction.

For example, the movement amount of the right blade support portion is added to the movement amount of the left blade support portion, and further added to the movement amount of the left blade support portion. By sequentially adding to the movement amount of each blade support portion, the interval between the cutting blades attached to each blade support portion is adjusted to be expanded or contracted in a direction orthogonal to the transfer direction.
Thereby, according to the horizontal width of a flat cable, the space | interval of each adjacent cutting blade can be finely adjusted collectively in a stepless manner with respect to the direction orthogonal to a transfer direction.
As a result, the flat cable can be cut to a desired cutting width.

As an aspect of the present invention, the respective cam portions can be collectively moved up and down by the cam portion moving means while being pressed against the inclined surfaces of the respective blade support portions.
That is, by moving each cam part up and down by the cam part moving means, each blade support part against which each cam part is pressed can be moved horizontally horizontally in the same direction.
Thereby, the space | interval of each cutting blade can be adjusted simultaneously.

As an aspect of the present invention, the flat cable can be cut by a pair of cutting blades attached to the lower end side of the blade support portion at a predetermined interval with respect to a direction orthogonal to the transfer direction.
That is, since the interval between the pair of cutting blades attached to the blade support portion is always constant, the cutting width of the flat cable cut by each cutting blade does not change, and the cutting is always performed with a constant cutting width. be able to.
Thereby, a flat cable with a constant cutting width can be manufactured.

The present invention also cuts a flat cable formed by covering a plurality of conductors arranged in parallel in parallel with the transfer direction with a pair of insulating films into a strip shape in parallel with the transfer direction of the flat cable. A flat cable cutting device, wherein a blade support portion having a cutting blade attached to a lower end side and a cam portion pressed against an upper end side of the blade support portion are transferred above the flat cable transfer path. A plurality of arms that are horizontally movable with respect to a direction orthogonal to the direction, and that are formed by extending the upper end side of the blade support portion obliquely upward toward the direction orthogonal to the transfer direction on the upper end side of the blade support portion. A slope formed on the upper end side of the blade support portion, the arm portion being formed with a length that is pressed against the side surface of the adjacent cam portion disposed on the extension side of the arm portion. And the lower end of the cam part Are inclined at an angle so as to be pressed against each other in the direction perpendicular to the transfer direction along the arm portion, and the blade support portion and the cam portion are The cam surface of the cam portion is pressed against the inclined surface, and the arm portion of the blade support portion is urged in the direction pressed against the side surface of the adjacent cam portion, corresponding to the vertical movement of each cam portion. The flat cable cutting device is characterized in that the interval between the cutting blades attached to the blade support portions is adjustable in size in a direction perpendicular to the transfer direction.
In other words, with the cam surface of each cam part pressed against the slope of each blade support part, the entire cam part is moved vertically up and down to correspond to the vertical movement of each cam part. Each blade support is moved horizontally in the same direction perpendicular to the transfer direction by the pressing force. Further, each cam portion against which the arm portion of each blade support portion is pressed is moved horizontally in the same direction perpendicular to the transfer direction.

For example, the movement amount of the right blade support portion is added to the movement amount of the left blade support portion, and further added to the movement amount of the left blade support portion. By sequentially adding to the movement amount of each blade support portion, the interval between the cutting blades attached to each blade support portion is adjusted to be expanded or contracted in a direction orthogonal to the transfer direction.
Thereby, according to the horizontal width of a flat cable, the space | interval of each adjacent cutting blade can be finely adjusted collectively in a stepless manner with respect to the direction orthogonal to a transfer direction.
As a result, the flat cable can be cut to a desired cutting width.

As an aspect of the present invention, it is possible to provide a cam part moving means that moves the cam parts up and down collectively while pressing against the slopes of the blade support parts.
That is, by moving each cam part up and down by the cam part moving means, each blade support part against which each cam part is pressed can be moved horizontally horizontally in the same direction.
Thereby, the space | interval of each cutting blade can be adjusted simultaneously.

As a mode of this invention, a pair of cutting blades can be attached to the lower end side of the blade support part at a predetermined interval with respect to a direction orthogonal to the transfer direction.
That is, since the interval between the pair of cutting blades attached to the blade support portion is always constant, the cutting width of the flat cable cut by each cutting blade does not change, and the cutting is always performed with a constant cutting width. be able to.
Thereby, a flat cable with a constant cutting width can be manufactured.

The flat cable can be constituted by, for example, covering a plurality of conductors arranged in parallel with a pair of insulating films.
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 the present invention, it is possible to provide a flat cable cutting method and a manufacturing apparatus thereof capable of finely adjusting the intervals between a plurality of cutting blades in a stepless manner.

The front view which shows the flat cable cutting device of this embodiment. The partial enlarged front view which shows the attachment structure of a cutting blade. The partial expansion front view which shows the cutting width expansion / contraction operation | movement of a cutting blade. Plan view showing an example of cutting a flat cable with a cutting blade The partial expanded front view which shows the other attachment structure of a cutting blade. The top view which shows the example which cut | disconnected the flat cable with a pair of cutting blade. The side view which shows the slitter for cutting which cut | disconnects the conventional flat cable. The front view which shows the slitter for cutting | disconnection of FIG.

An embodiment of the present invention will be described below in detail with reference to the drawings.
FIG. 1 is a front view showing a flat cable cutting device 2 of the present embodiment, FIG. 2 is a partially enlarged front view showing a mounting structure of a cutting blade 6, FIG. 3 is an explanatory view showing an expansion / contraction operation of the cutting blade 6, and FIG. It is a top view which shows the example which cut the wide flat cable 1 into the strip shape with the cutting blade 6. FIG.

  The flat cable cutting device 2 according to the embodiment is arranged in a cutting section C set on a transfer path B that transfers the flat cable 1 in the transfer direction A on the downstream side of a manufacturing device (not shown) that manufactures the wide flat cable 1. (See FIG. 7).

  In addition, the flat cable 1 manufactured by the manufacturing apparatus is obtained by sandwiching a plurality of flat conductors (not shown) arranged in parallel in the transfer direction A and sandwiching them between a pair of insulating films. .

  The flat cable cutting device 2 includes a cable support portion 3 disposed below the transfer path B in the cutting section C and a cable cutting section 4 disposed above the transfer path B in the cutting section C. Yes.

The cable support portion 3 is composed of a support shaft 3a that is pivoted below the transfer path B of the cutting section C and orthogonal to the transfer direction A, and a plurality of drums 3b that are fitted to the outer periphery of the support shaft 3a. ing.
Between the drum 3b fitted to the outer periphery of the support shaft 3a, a groove 3c having a width that allows the cutting blade 6 to be inserted is formed.

  Specifically, the drum 3b formed with the same diameter is formed so that the width of the outer peripheral portion is thinner than the center portion, and the plurality of drums 3b are fitted adjacent to each other on the outer periphery of the support shaft 3a. By combining, a groove portion 3c wider than the thickness of the cutting blade 6 is formed between the opposing surfaces of the outer peripheral portions of the adjacent drums 3b.

  The position of the groove 3c can be changed by changing the thickness and number of drums 3b, or changing the thickness and number of shim plates (not shown) sandwiched between the drums 3b. Fine-tune according to the cutting width.

  The cable cutting part 4 includes a mounting frame 5 installed above the cutting section C, a thin cutting blade 6 attached to the mounting frame 5, a blade support part 7, a cam part 8, and a movable part. It is comprised with the part 9. FIG.

  The attachment frame 5 is formed in a gate shape when viewed from the transfer direction A, and is arranged in the width direction Y orthogonal to the transfer direction A so as to straddle the transfer path B. In addition, two guide shafts 5b and 5b are laid in parallel to the transfer direction A on the wall surfaces facing the lower ends of the attachment portions 5a and 5a that are suspended from both sides of the attachment frame 5.

The cutting blade 6 is formed of a thin metal blade such as a razor blade, and is fixed perpendicularly to the lower end portion of the blade support portion 7 attached between the guide shafts 5b and 5b.
In the embodiment, since the wide wide flat cable 1 manufactured by a manufacturing apparatus (not shown) is cut into a strip shape in parallel with the transfer direction A, the eight cutting blades 6 are set in the width direction of the wide flat cable 1. In addition, they are arranged in parallel corresponding to the eight cutting positions.
8 blade support portions 7 are attached in parallel to the space between the guide shafts 5b and 5b corresponding to the number of cutting blades 8, and the width direction perpendicular to the transfer direction A along the guide shafts 5b and 5b. It is provided so as to be horizontally movable with respect to Y.

  The blade support portion 7 is pulled and urged in a direction to be gathered toward the right end of the movable portion 9 by a restoring force of a coil spring (not shown).

Further, on the upper end side of the blade support portion 7, an arm portion 7 a formed by extending the upper end side of the blade support portion 7 obliquely upward on the left side perpendicular to the transfer direction A is formed.
The arm portion 7a is formed to have a length that is pressed against the side surface of the left cam portion 8 disposed on the extension side of the arm portion 7a.
An inclined surface 7b against which the cam portion 8 disposed above the blade support portion 7 is pressed is formed on the inclined portion on the upper surface side of the arm portion 7a in the width direction Y orthogonal to the transfer direction A. The inclined surface 7b is inclined in the same direction along the arm portion 7a.

  The arm portion 7a is inclined at the same angle (for example, 45 degrees) in the same direction (left obliquely upward in the figure) when viewed from the upstream side in the transfer direction A (front side in FIG. 1).

  An abutting piece 7c that is pressed against the right side surface of the cam portion 8 disposed above the blade support portion 7 adjacent to the left side is formed on the inclined side of the arm portion 7a, that is, on the upper end on the extension side of the arm portion 7a. ing. The contact piece 7c is always pressed against the right side surface of the cam portion 8 disposed on the upper left side on the extension side of the arm portion 7a.

  In correspondence with the number of blade support portions 7, eight cam portions 8 are attached in parallel to the lower surface side of the movable portion 9 installed on the opposing wall surface of the attachment portions 5 a, 5 a. It is provided along the lower surface so as to be horizontally movable with respect to the width direction Y perpendicular to the transfer direction A.

Further, the cam portion 8 is pressed against the inclined surface 7b of the blade support portion 7 disposed below the cam portion 8 at the lower end side thereof, that is, the left corner portion when viewed from the transfer direction A of the cam portion 8. A cam surface 8a inclined at an angle is formed.
The cam surface 8 a of the cam portion 8 is constantly pressed against the inclined surface 7 b of the blade support portion 7 disposed below the cam portion 8.

  Further, the cam portion 8 attached to the right end of the movable portion 9 is fixed at a fixed position, and the remaining cam portion 8 except for the right end cam portion 8 is horizontally movable with respect to the width direction Y orthogonal to the transfer direction A. Is provided.

The movable part 9 is formed to be longer than the lateral width of the wide flat cable 1, and is laid in parallel to the opposing wall surface of the attachment parts 5a, 5a in a direction perpendicular to the transfer direction A.
Further, both end portions of the movable portion 9 are engaged with guide rails 5c and 5c which are installed vertically along the opposing wall surfaces of the attachment portions 5a and 5a so as to be vertically movable. An adjustment bolt 10 is attached to the upper surface of the movable portion 9 so as to be horizontally rotatable with respect to the central portion on the upper surface side of the mounting frame 5.

  That is, if the adjustment bolt 10 is rotated in the positive direction indicated by the arrow in the drawing by a rotation operation tool (not shown), the entire movable portion 9 is lowered in the vertical direction according to the rotation amount (see FIG. 3). a). Further, when the adjustment bolt 10 is turned in the reverse direction indicated by the arrow in the drawing by a turning operation tool (not shown), the entire movable portion 9 is vertically raised according to the turning amount (see b in FIG. 3). .

  A cutting method of cutting the wide flat cable 1 into a strip shape by the flat cable cutting device 2 will be described.

  First, as shown in FIGS. 1 and 2, when the interval Wa (see a in FIG. 3) of the cutting blade 6 is finely adjusted so that the cutting width of the wide flat cable 1 is widened, the adjusting bolt 10 is not shown. The movable part 9 to which the cam part 8 is attached is lowered in the vertical direction by turning in the positive direction indicated by the arrow in the drawing by the turning operation tool.

  Since the cam surface 8a of the cam portion 8 is constantly pressed against the inclined surface 7b of the blade support portion 7, if the movable portion 9 is lowered in the vertical direction, the cam portion 8 is moved in response to the lowering operation. The cam surface 8a of the cam portion 8 is gradually lowered while being pressed against the slope 7b of the support portion 7, and moves from the upper left slope to the lower right slope along the slope 7b of the blade support portion 7.

Due to the pressing force of the cam portion 8 described above, the blade support portion 7 is moved horizontally toward the left end of the movable portion 9 against a coil spring (not shown).
By the movement of the blade support portion 7, the left adjacent cam portion 8 is also moved horizontally to the left side together with the left adjacent blade support portion 7.
The left adjacent cam portion 8 that has moved horizontally to the left side together with the left adjacent blade support portion 7 also moves the left adjacent blade support portion 7 further to the left side by the pressing force of the cam portion 8.

As described above, the lowering operation of the cam portion 8 widens the interval Wa between the left and right adjacent blade support portions 7 to the same extent. Further, since the cam surface 8a of the cam portion 8 pushes down the blade support portion 7 and horizontally moves the left cam portion 8 to the left side, the horizontal movement amount of each blade support portion 7 is fixed at the right end blade support. The amount of movement increases in order from the unit 7.
Thereby, since the interval Wa between the adjacent cutting blades 6 is gradually increased, fine adjustment can be performed so that the cutting width by the cutting blade 6 is increased (see a in FIG. 3).

Next, when the interval Wb (see b in FIG. 3) of the cutting blade 6 is finely adjusted so that the cutting width of the wide flat cable 1 is narrowed, the adjustment bolt 10 is indicated by an arrow in the drawing with a rotating operation tool (not shown). The movable part 9 to which the cam part 8 is attached is vertically raised by rotating in the reverse direction shown.
Since the cam surface 8a of the cam portion 8 is constantly pressed against the inclined surface 7b of the blade support portion 7, if the movable portion 9 is raised vertically, the cam portion 8 is corresponding to the rising operation. The cam surface 8a of the cam portion 8 is gradually raised while being pressed against the slope 7b of the blade 7, and moves from the lower right slope to the upper left slope along the slope 7b of the blade support portion 7.

Since the blade support portion 7 is pulled and urged in a direction in which the blade support portion 7 is gathered toward the right end of the movable portion 9 by a restoring force of a coil spring (not shown), the blade support portions 7 are gathered together by the raising operation of the cam portion 8. While being moved, it is horizontally moved toward the right end of the movable portion 9.
Thereby, since the interval Wb between the adjacent cutting blades 6 is gradually narrowed, fine adjustment can be performed so that the cutting width by the cutting blade 6 is narrowed (see b in FIG. 3).

  As a result, one wide flat cable 1 transferred to the cutting section C on the transfer path B is cut into a plurality of strip flat cables 1a in parallel with the transfer direction A by the flat cable cutting device 2 of the embodiment. (See FIG. 4).

The relationship between the blade support portion 7 and the cam portion 8 described above will be described in detail by setting numbers in the first to eighth order from the right end to the left end of the movable portion 9 when viewed from the front with reference to FIG.
The cam surface 8a of the 1st-8th cam part 8 is always pressed with respect to the inclined surface 7b of the 1st-8th blade support part 7 arrange | positioned under it, and it is the 1st-7th blade support. The arm portion 7a of the portion 7 is pressed against the side surface of the second to eighth cam portions 8 arranged on the left side thereof.

  If the 1st blade support part 7 which pressed the 1st cam part 8 horizontally moves to the left direction, the 2nd cam part 8 will be horizontally moved to the left by the same movement amount. And the 2nd blade support part 7 which pressed the 2nd cam part 8 is horizontally moved to the left by the same movement amount.

  The second blade support portion 7 is horizontally moved by a double movement amount obtained by adding the movement amount of the second blade support portion 7 to the movement amount of the first blade support portion 7.

  The third blade support portion 7 is horizontally moved by a movement amount that is three times the movement amount of the first blade support portion 7 plus the movement amount of the third blade support portion 7.

  The fourth blade support part 7 is horizontally moved by a movement amount that is four times the movement amount of the fourth blade support part 7 added to the movement amount of the first to third blade support parts 7.

  The fifth blade support portion 7 is horizontally moved by a movement amount that is five times the movement amount of the first blade to the fourth blade support portion 7 plus the movement amount of the fifth blade support portion 7.

  The sixth blade support portion 7 is horizontally moved by a movement amount that is six times the movement amount of the fifth blade support portion 7 added to the movement amount of the first to fifth blade support portions 7.

  The seventh blade support portion 7 is horizontally moved by a movement amount that is seven times the movement amount of the first blade support portion 7 plus the movement amount of the seventh blade support portion 7.

  The eighth blade support portion 7 is horizontally moved by a movement amount that is eight times the movement amount of the seventh blade support portion 7 added to the movement amount of the first to seventh blade support portions 7.

  Hereinafter, by the pressing force of the first to eighth cam portions 8, the first to eighth blade support portions 7 are horizontally moved in the same direction (left direction in FIG. 1), and the blade support portions 7 Since the individual movement amounts are sequentially added as the movement amounts of the blade support portions 7 arranged next to each other, the interval between the cutting blades 6 attached to the blade support portion 7 can be adjusted. In addition, the uncut portions at both side edges of the wide flat cable 1 can be cut into the same width.

As described above, the blade support portions 7 are horizontally moved in the same direction by the pressing force of the cam portion 8, and the individual movement amounts of the blade support portions 7 are moved by the adjacent blade support portions 7. Are sequentially added, and the interval between the cutting blades 6 attached to the blade support portion 7 is adjusted.
Thereby, according to the width of the wide flat cable 1, the interval between the adjacent cutting blades 6 can be finely adjusted in a stepless manner with respect to the width direction Y orthogonal to the transfer direction A. The work time required for adjustment can be greatly reduced. Further, since the interval between the adjacent cutting blades 6 is adjusted to be equal, the work for cutting the wide flat cable 1 to a desired cutting width can be performed accurately, and the dimensional accuracy at the time of cutting can be improved.

FIG. 5 is a partially enlarged front view showing another mounting structure of the cutting blade 6, and FIG. 6 is a plan view showing an example in which the wide flat cable 1 is cut with a pair of cutting blades 6.
The mounting structure vertically fixes the pair of cutting blades 6 to both lower end portions of the mounting plate 7d fixed to the lower end portion of the blade support portion 7, and has a predetermined width direction Y perpendicular to the transfer direction A. It is a structure arranged at intervals. The pair of cutting blades 6 are arranged in parallel in parallel with the transfer direction A with two cutting blades 6 as a set.

  That is, since the distance between the pair of cutting blades 6 attached to the blade support portion 7 is constant, the blade support portion 7 attached with the pair of cutting blades 6 is moved horizontally in the width direction Y orthogonal to the transfer direction A. The cutting position by the pair of cutting blades 6 and the cutting interval between the strip flat cables 1b cut by the cutting blades 6 are set.

  A wide flat cable 1 manufactured by a manufacturing apparatus (not shown) is cut into the same width in parallel with the transfer direction A by a plurality of pairs of cutting blades 6 and cut into a plurality of strip flat cables 1b (see FIG. 6).

  That is, since the interval between the pair of cutting blades 6 attached to the blade support portion 7 is always constant, the cutting width of the strip flat cable 1b cut by the pair of cutting blades 6 does not change, and from the start of cutting. It is possible to always cut with a constant cutting width until the end of cutting. Further, the uncut portion between adjacent strip flat cables 1b is discarded.

As a result, a plurality of strip flat cables 1b having a constant cutting width can be manufactured continuously, and the working time required for adjusting the cutting width can be greatly reduced, as in the above embodiment. The dimensional accuracy can be improved when the wide flat cable 1 is cut to the same cutting width.
If the interval between the pair of cutting blades 6 is adjusted, the cutting width of the strip flat cable 1b cut by the cutting blade 6 can be changed.

Further, the flat cable cutting device 2 of the present embodiment is arranged between a pair of upper and lower heat rolls 54 and 54 and a pair of upper and lower rolls (not shown) arranged on the downstream side of the heat rolls 54 and 54. Also good.
That is, the flat cable 1 in which tension is applied in the transfer direction A by the heat rolls 54 and 54 and a pair of upper and lower rolls is cut into strips by the flat cable cutting device 2 of the present embodiment.
Thereby, it is not necessary to arrange | position the cable support part 3 below the transfer path B, and the adjustment of the space | interval of the groove part 3c formed between the drums 3b becomes unnecessary. As a result, the configuration and structure of the entire apparatus can be simplified, and the productivity can be improved.

In the correspondence between the configuration of the present invention and the embodiment,
The conductor of the present invention corresponds to the flat conductor 2 of the embodiment,
Similarly,
The cam part moving means corresponds to the adjusting bolt 10,
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.

  You may change the number of the cutting blades 6 of this embodiment into the desired number of sheets, for example, 8 sheets or less, or 8 sheets or less.

DESCRIPTION OF SYMBOLS A ... Transfer direction B ... Transfer path Wa, Wb ... Spacing 1 ... Wide flat cable 1a, 1b ... Strip flat cable 2 ... Flat cable cutting device 3 ... Cable cutting part 4 ... Cable support part 5 ... Mounting frame 6 ... Cutting blade 7 ... Blade support part 7a ... Arm part 7b ... Slope 8 ... Cam part 8a ... Cam surface 9 ... Moving part 10 ... Adjustment bolt

Claims (6)

A flat cable in which a plurality of conductors arranged in parallel with the transfer direction are covered with a pair of insulating films and cut into strips by a plurality of cutting blades in parallel with the transfer direction of the flat cable. A cable cutting method,
Above the flat cable transfer path, a plurality of blade support portions where the cutting blades are attached to the lower end side and cam portions pressed against the upper end side of the blade support portions are arranged in a direction perpendicular to the transfer direction. And
The cam surface formed on the lower end side of the cam portion is pressed against the inclined surface formed on the upper end side of the blade support portion in a direction perpendicular to the transfer direction,
Pressing the upper end side of the blade support portion obliquely upward toward the direction orthogonal to the transfer direction, against the side surface of the adjacent cam portion disposed on the extension side of the arm portion;
While the cam surface of each cam part is pressed against the slope of each blade support part, the entire cam part is moved up and down in the vertical direction,
Corresponding to the vertical movement of the cam portions, the blade support portions are moved horizontally in the same direction perpendicular to the transfer direction by the pressing force of the cam portions,
Each cam part pressed against the arm part of each blade support part is horizontally moved in the same direction perpendicular to the transfer direction,
The individual movement amounts of the blade support portions are sequentially added as the movement amounts of the blade support portions arranged next to the blade support portions,
A flat cable cutting method in which the interval between the cutting blades attached to the blade support portions is enlarged or reduced in a direction perpendicular to the transfer direction. The flat cable cutting method according to claim 1, wherein the cam portions are collectively moved up and down by a cam portion moving means while being pressed against the inclined surfaces of the blade support portions. The flat cable cutting method according to claim 1 or 2, wherein the flat cable is cut by a pair of cutting blades attached to a lower end side of the blade support portion at a predetermined interval with respect to a direction orthogonal to the transfer direction. . A flat cable cutting device that cuts a flat cable formed by covering a plurality of conductors arranged in parallel in parallel with a transfer direction with a pair of insulating films into a strip shape in parallel with the transfer direction of the flat cable. And
Above the flat cable transfer path, a blade support portion with the cutting blade attached to the lower end side and a cam portion pressed against the upper end side of the blade support portion are horizontal to the direction orthogonal to the transfer direction. Arrange a plurality of freely movable,
On the upper end side of the blade support portion, an arm portion is formed by extending the upper end side of the blade support portion obliquely upward in a direction perpendicular to the transfer direction,
The arm portion is formed to a length that is pressed against the side surface of the adjacent cam portion disposed on the extension side of the arm portion,
An angle at which the slope formed on the upper end side of the blade support portion and the cam surface formed on the lower end side of the cam portion are pressed against each other in the direction perpendicular to the transfer direction along the arm portion. Tilt to
A direction in which the cam surface of the cam portion is pressed against the slope of the blade support portion, and the arm portion of the blade support portion is pressed against the side surface of the adjacent cam portion. Energized to
Corresponding to the vertical movement of each cam part, a flat cable cutting device provided with an interval between each cutting blade attached to each blade support part so as to be adjustable in size in a direction perpendicular to the transfer direction. The flat cable cutting device according to claim 4, further comprising a cam part moving unit that collectively moves the cam parts up and down while pressing against the inclined surfaces of the blade support parts. The flat cable cutting device according to claim 4 or 5, wherein a pair of cutting blades are attached to a lower end side of the blade support portion at a predetermined interval with respect to a direction orthogonal to the transfer direction.

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