JPH0362418A - Flat cable punching device - Google Patents

Abstract

PURPOSE:To enable punching a flat cable comprising plurality of wire types and separating the punched sections from each other at any position by so providing male and female cutters as to be exchangeable and a guide member for pressing the wires and guiding the male cutter. CONSTITUTION:A male cutter 31 and a female cutter 11 are so assembled as to suit the arrangement position and direction of a flat cable 5, and placed on a press device. Then, the cable 5 is placed on a support part 11a at the upper end of the female cutter 11. Thereafter, the male cutter 31 is lowered and a wire 4 is pressed with a guide member 51. Then, the male cutter 31 is further lowered to cut the connection part 5a of the cable 5. Upon completion of the cutting, the male cutter 31 rises and waits until the next cutting position of the cable 5 comes on the support part 11a of the female cutter 11. According to the aforesaid construction, many cables can continuously be punched in sequence.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention is a flat cable consisting of a plurality of wires, in which a part of the plurality of wires is separated by punching an intermediate connecting portion of the plurality of wires. The present invention relates to a flat cable punching device for separating wires from each other, and more particularly to a flat cable punching device that is suitable for flat cables in which wires having different external dimensions coexist.

(Prior Art) FIG. 8 is a diagram showing a plurality of wires arranged in parallel to each other on a plane. Each wire 1 is composed of a core wire la and an insulating coating 1b surrounding the core wire la.

Pressure welding is a known method for connecting the tips of these wires 1 to connectors (not shown). In this method, a plurality of contacts built into the connector are provided with a press-contact part, and when the wire 1 is press-fitted into the press-fit part, the covered part of the wire 1 is cut, and the core wire 1a and the contacts are electrically connected. It is. As shown in Fig. 8, the connector is equipped with the same number of contacts as the wires 1 lined up, and each wire 1 and each contact are pressed together as described above, thereby completing the connection between the connector and the wires 1. .

FIG. 9 is a diagram showing a plurality of independent wires and an example of a flat cable.

The flat cable 4 has a plurality of wires (in this case two wires) having the same structure and the same external dimensions as the independent wires 1, the periphery of which is covered with a metal foil 2 for shielding, and the outer periphery of which is integrally covered with an insulating jacket 3. covered in. Since the outer sheath 3 and the metal foil 2 are an obstacle to pressure-welding the flat cable 4 or the wire 1 together with the connector, the outer sheath 3 and the metal foil 2 at the tip are removed by stripping means. It is pressed in the same manner as the wire 1 shown in Fig. 8 (see Japanese Patent Application No. 188181/1983).
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FIG. 1O is a diagram showing a flat cable made up of a plurality of independent wires and a plurality (in this case, two) of wires having different external dimensions.

This flat cable consists of a wire 6 having the same external dimensions as the independent wire 1, and a wire 7 having larger external dimensions. The wire 6 includes a core wire 6a, a metal foil 6c directly wound around the core wire 6a, and the metal foil 6.
It consists of a covering 6b that covers C.

Further, the wire 7 includes a core wire 7a and an inner sheath 7b covering the core wire 7a.
, a shielding metal foil 7C that covers the inner sheath 7b, and a covering 7d that covers the metal foil 7c.

Here, the metal foils 8c, 7c of both wires 6.7 are connected to each other and the coating 6b of both wires 6.7.

7d are also connected to each other. Furthermore, the diameters of all the core wires 1a, 8a, and 7a, including the independently provided wire 1, are the same, and the outer diameters of the cover ff1lbJb and the inner cover 7b are also the same. Note that this wire 6 is called a drain wire and is used as a ground line.

In order to press the flat cable 5 shown in FIG. 10 or the wire 1 together with the flat cable 1 to the connector, as a pre-process, the wire 6 is left covered ff16b at the tip of the flat cable 5, and the coating 7d of the wire 7 and the metal foil are removed. 7C
It is necessary to perform an operation to remove the To do this, first the intermediate connection 5a between the two wires 6.7 is removed, and then the wire 7 is coated with its coating 7d and the metal foil 7.
c is removed.

(Problems to be Solved by the Invention) The flat cable 5, which is made up of a plurality of types of wires having different external dimensions, as shown in Fig. 1O, has various placement positions. Sometimes it is arranged on the right side of the lined independent wires 1, sometimes on the left side. In Figure 1O, the wire 7 on the right side of the flat cable 5 has a larger outer dimension than the wire 6 on the left side, but on the contrary, the wire on the left side has a larger outer dimension than the wire on the right side. (hereinafter referred to as "different directions"). Further, the flat cable is not limited to being composed of two wires, but one flat cable may be composed of three or more wires. Further, the total number of wires is not limited to the five shown in FIG. 1O, but may be various, such as 12, for example.

Moreover, since this flat cable is composed of multiple types of wires having different external dimensions, the connecting portion 5a (see FIG. 10) to be removed is the two core wires 6a+
It is not in the center of 7a, but is off to one side.

In view of the above-mentioned circumstances, the present invention provides a method for connecting a flat cable consisting of a plurality of types of wires having different external dimensions, regardless of the arrangement position and the different orientations. The object of the present invention is to provide a flat cable punching device capable of punching and separating parts of these wires from each other.

(Means for Solving the Problems) The flat cable punching device of the present invention has a plurality of types of wires having different external dimensions arranged in parallel to each other on one plane, and the sheaths of these wires are integrally connected to each other. A flat cable punching device for punching an intermediate connection portion of the wires of a flat cable to separate some of the wires from each other, the flat cable punching device comprising: a supporting portion extending in the vertical direction and supporting each of the wires from below; a female blade having a cutting edge at the upper end; a male blade extending in the vertical direction and having a cutting edge at the lower end and descending from above to cut the connection; and a male blade extending in the vertical direction and sandwiching the male blade. The male blade descends together with the male blade and presses down at least some of the wires of the flat cable before the cutting edge of the male blade reaches the flat cable, and after holding down this wire, stops descending, and further and a guide member for guiding the descending male blade, and the female blade and the male blade are provided so as to be replaceable so as to be compatible with the flat cable having various shapes. be.

(Function) The flat cable punching device of the present invention is provided with a female blade and a male blade that are replaceable so that the flat cable can be arranged in various positions and in different directions. The device is equipped with a guide member that holds down the wire and guides the male blade so that the accuracy of engagement between the male blade and the female blade is maintained. Thereby, it is possible to punch various flat cables with sufficient accuracy without providing a punching device for each flat cable having a different arrangement position or orientation.

(Embodiment) Fig. 1 is a partially sectional front view showing an embodiment of the flat cable punching device of the present invention, and Fig. 2 is a sectional view taken along line A-A in Fig. 1. It is.

This device consists of a scalpel blade 1 fixed on a base 8 of a press device.
1 and a male blade holder 30 that holds a male blade 31 supported by the movable part 9 of the press device.
and a guide member holder 50 which is located between the female blade holder lO and the male blade holder 30 and holds a guide member 51.

The guide member holder 50 is supported by the male blade holder 30 and moves up and down as the male blade holder 30 moves up and down, but the guide member holder 50 penetrates through the hole 59 with respect to the male blade holder 30. It is configured to be guided by a guide rod 52 and relatively movable up and down. Further, the male blade holding section 30 and the guide member holding section 50 are urged in a direction away from each other by a spring member 53, and the stopper 39
By coming into contact with , the furthest position from the male blade holding member 30 is determined.

The male blade holding part 30 is equipped with a rail 32, and the male blade holding part 30 and the guide member holding part 50 can be pulled out in the direction of arrow H shown in FIG. 2 (direction perpendicular to the paper surface of FIG. 1). The female blade and male blade can be exchanged while the blade is pulled out. Positioning is performed by pushing the male blade holding part 30 in the direction of the arrow shown in FIG. 2 until it abuts against the press movable part 9.

When the male blade holding part 30 and the guide member holding part 50 descend, the first female blade holding member 12 which holds the female blade 11
The slope 12a provided on the guide member holding portion 50 engages with the slope 54a of the positioning member 54 provided on the
Accurate positioning of the female blade and male blade is performed each time the blade is lowered in the left and right direction in the figure.

FIG. 3 is a partially enlarged view taken along the line FF in FIG. 2, and FIG. 4 is a partially enlarged view showing a further enlarged part of the same.

At the upper end of the scalpel blade 11 extending in the vertical direction, there is a support part 11 that supports each wire 71 to be punched from below.
a and a cutting edge 11b. Above each wire 71, male blades 31 having a cutting edge 31a at the lower end and guide members 51 that sandwich the male blades 31 are alternately arranged.

Note that spacers 33 are placed in place of the male blades 31 at locations where the male blades 31 are not placed.

Here, the position and direction of the male blade can be freely arranged by once removing the male blade holding part 30 and the guide member holding part 50 as described above.
The scalpel blade can also be freely arranged according to this.

This involves multiple types of wires 7 with different external dimensions.
This is to deal with the fact that the combinations of 1 are variously different.

When the male blade 31 and the guide member 51 descend, the guide member 51 first presses the wire 7 of the flat cable 5 with a large diameter, as shown in FIG. 4, and thereby the female blade 11. The relative positioning of the male blade 31 and the wire (flat cable) is performed.

If this positioning is not performed and the male blade descends while the wire 7 is deviated as shown by the two-dot chain line in FIG. Although there is a risk that the male blade may be damaged, this positioning is ensured by sandwiching at least the thick wire between the support portion 11a provided on the female blade and the guide member 51 as described above. ing. The guide member 51 stops at the position where it comes into contact with the wire, but as shown in FIG. The blade further descends while being guided by the guide member 51, and the cutting edge 31a bites into the connecting portion 5a of the flat cable 5, and further enters the space 17, thereby cutting the connecting portion 5a. Here, since the male blade 31 is sandwiched between the guide members 51 and configured to descend while being guided by the guide member 51, the manufacturing accuracy of the male blade 31 can be lowered, and the arrangement position of the flat cable can be reduced. A decrease in assembly precision caused by replacing the male blade 31 depending on the orientation etc. is also allowed. After cutting, the male blade 31 and the guide member 51 rise to complete the -cycle cutting operation.

FIG. 5 is a plan view of the scalpel blade holder lO taken along line DD in FIG. 1.

The base body i3 of the scalpel blade holding part 10 is a base body i3 that fits into the groove 13a and is fixed to the base 8 of the press device (see FIG. 1) with bolts.
It is positioned by two blocks 14.14. A large number of scalpel blades 11 (including spacers 15 disposed at unnecessary positions of the scalpel blade 11) are arranged in large numbers in the horizontal direction of the figure and are held by the first scalpel blade holding member 12 on the left and right, and in the direction perpendicular thereto (see FIG. 5). (vertical direction) is a second knife blade holding member 16 having comb blades 16a formed so as to be inserted alternately with the knife blades.
This positions the knife blade 11.

6 is a bottom view of the male blade holder taken along line B-B in FIG. 1; FIG.

The male blade 31 is a male blade holding member 3 having a blade 33a.
The male blade 31 is fixed to the male blade holding section 30. Further, an adjustment screw 36 is provided to finely adjust the position relative to the knife blade 11. In addition,
The hole 37 is a hole into which one end of the spring member 53 shown in FIG. 1 is inserted.

FIG. 7 is a bottom view of the guide member holder taken along line CC in FIG. 1.

The male blades 31 (including the spacer 33) and the guide pieces 51a of the guide member 51 are alternately arranged and fixed.

However, the guide piece 51a is attached to the male blade 31 as shown in FIG.
It does not extend to the center of the blade, and only pinches both sides of the male blade. Further, each end face of the male blade 31 in the vertical direction shown in FIG. 7 is also sandwiched between the guide pieces 51a of the guide member 51. This guide member 51 is fixed by a ram plate 56 and a block 58.

In order to operate the flat cable punching device configured as described above, first, as a preparation, the male blade holding part 30 and the guide member holding part 50 are pulled out using the rail 32, and the flat cable to be punched is punched. Male blade 31 according to the arrangement position and orientation. The scalpel blade 11 is assembled and placed in a press device as shown in FIGS. 1 and 2. Next, a cable supply device (not shown) moves the flat cable to the upper end support portion of the scalpel blade 11 as shown in FIGS. 3 and 4. It is placed on la. Next, the male blade 31 descends, first the wire is held down by the guide member 51, and then the male blade 31 further descends to cut off the cable connection portion 5a (see FIG. 4). When this cutting is completed, the male blade 31 rises to the position shown in FIG. 3 and waits until the next cutting position of the cable is placed on the support portion 11a of the female blade 11. As described above, punching of a large number of cables is performed successively and continuously.

(Effects of the Invention) As described above in detail, the flat cable punching device of the present invention is provided with a male blade and a female blade that are replaceable, and is also provided with a guide member that presses the wire and guides the male blade. Therefore, even if the male blade and female blade are replaced, the accuracy of the engagement between the male blade and the female blade is maintained, and punching can be performed with sufficient accuracy.

[Brief explanation of drawings]

FIG. 1 is a partially sectional front view showing an embodiment of the flat cable punching device of the present invention, and FIG.
A sectional view taken along line A-A in the figure, FIG. 3 is a cross-sectional view taken along line A-A in FIG.
FIG. 4 is a partially enlarged view showing a part of the enlarged view taken along line F; FIG. 6 is a bottom view of the male blade holder taken along line B-B in FIG. 1; FIG. 7 is a guide member taken along line C-C in FIG. 1. Fig. 8 is a bottom view of the holding part; Fig. 8 is a drawing showing a plurality of wires arranged parallel to each other on a plane; Fig. 9 is a drawing showing a plurality of independent wires and an example of a flat cable. FIG. 10 is a diagram showing a flat cable made up of a plurality of independent wires and a plurality of wires having mutually different external dimensions. 1... Wire 1a... Core wire 1b...
Covering 2. Be, 7c...Metal foil 3
...Insulating jacket 4...Flat cable 5
...Flat cable 6,7...Wire 8...
Base 9 of the press device... Movable part IO of the press device... Knife blade holding section 11... Knife blade 11a
...Support part 11b...Blade tip 30...Male blade holding part 31...Male blade 32...Rail
50...Guide member holding portion 51...Guide member 53...Spring member cylindrical view Fig. 5 Fig. Fig. 0 Fig. 0

Claims (1)

[Claims] A connecting portion between the wires of a flat cable in which a plurality of types of wires having different external dimensions are arranged in parallel to each other on one plane, and the sheaths of these wires are integrally connected to each other. A flat cable punching device for separating a part of these wires from each other by punching the wires, the device includes a scalpel blade extending in the vertical direction and having a cutting edge and a support part at the upper end that supports each of the wires from below; a male blade extending in the vertical direction and having a cutting edge at the lower end and descending from above to cut the connection portion;
Descending with the male blade across the male blade and pressing at least some of the wires of each wire of the flat cable before the cutting edge of the male blade reaches the flat cable, and after pressing this wire. and a guide member that stops the descending and guides the male blade further descending, and the female blade and the male blade are provided to be replaceable so as to be compatible with the flat cable having various shapes. A flat cable punching device characterized by: