JPH0757058B2 - Double coated wire strip forming equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire processing used as a pretreatment step of crimping a terminal to an end of a heat resistant double-coated electric wire used under a relatively high temperature environmental condition. For a strip forming apparatus for a double-coated electric wire in a machine.

[0002]

2. Description of the Related Art Generally, for example, a covered electric wire W used for wiring automobiles, household electric appliances and office automation equipment.
As shown in FIG. 5, a strip Wa at the end of the soft covered electric wire W is molded, and the terminal T is formed on the strip Wa.
Is fixed by crimping.

Conventionally, a strip forming apparatus for a coated electric wire in an electric wire processing machine of this type is shown in FIGS. 6 to 8 (A) (B).
It is configured as shown in.

That is, in FIGS. 6 to 8A and 8B, a pair of left and right guide rods b are horizontally mounted on a bearing a1 of a machine frame (frame) a, and both guide rods are horizontally mounted. Each cutter support member d, which is integral with a pair of sliding members, is slidably provided in b, facing each other. Further, a pair of cutting blades e and a pair of strip blades f and g are detachably attached to each cutter supporting member d by interposing each adjusting member (spacer) c for regulating the length of the strip. A first clamp device h and a second clamp device i are provided on the machine frame a on both sides of each cutter support member d so as to grip the electric wire W. Further, a pair of connecting rods k are pivotally attached to the bases of the cutter supporting members d by respective pins k1, and the output shaft m1 of the air cylinder device m is connected to the connecting rods k by the pin shaft n. It is connected.

Therefore, in the above-described strip forming apparatus for a covered electric wire, as shown in FIGS. 7 and 8A and 8B, the mounting screws j are removed in advance to remove the adjustment members (spacers) c. By adjusting the width, the covered electric wire W
The length of the strip Wa is adjusted.

Next, a pair of electric wire feeding devices (not shown) convey the electric wire W by a predetermined length. Then, Fig. 6
As shown in FIG. 7, the output shaft m1 of the air cylinder device m is connected to each other by driving the air cylinder device m at the same time when the first clamp device h and the second clamp device i grip the electric wire W. Pushed through the rod k,
By sliding the pair of cutter support members d inwardly along the guide rods b, the cutting blades e cut the electric wire W, and the pair of strip blades f and g cover the coating Wb. After making a strip cut in the wire, the first clamp device h and the second clamp device i move outward while holding the electric wire W, so that the electric wire W is removed.
The coating Wb at the end of the electric wire W is pulled out by the pair of strip blades f and g to form the strip Wa at the end of the electric wire W.

[0007]

However, in the above-described strip forming apparatus for a covered electric wire, the strip Wa is formed at the end of W of the soft single-layer covered electric wire, and the terminal T is crimped and fixed to the strip Wa. However, no problems occur, but the ends of the heat-resistant double-coated wire used under the relatively hard and high temperature environmental conditions shown in FIGS. 4 (A) and 4 (B). Since the strip Wa is formed into the hardened and heat-resistant colored double coatings Wc and Wd, if the strip Wa is formed at the end of the coated electric wire as it is, the coated electric wire Since the outer diameter of W is large, the terminal T is in a state where it cannot completely cover the strip Wa.

Therefore, the double coating Wc of the coated electric wire W,
Although Wd is formed in two stages to form the strip Wa and the terminal T is crimped and fixed to the strip Wa,
The hard and heat-resistant double coatings Wc and Wd cannot be effectively cut by the cutting blade e and the strip blades f and g as they are, or coating waste is accumulated between the cutting blade e and the strip blades f and g. To produce uncut parts, or the double coatings Wc and Wd are hardened so that the heat resistance of the cutting blades e and strip blades f and g shortens the service life of the wire W.
The cutting blade e and the strip blades f and g are exchanged frequently and the adjusting members c are frequently removed, which consumes time and labor and makes it difficult to save labor in mass production.

In order to solve the above-mentioned problems, the present invention heats and softens the double-coated electric wire to facilitate the cutting and stripping work to prolong the life of the cutting blade and the strip blade, and at the same time, to provide the double-coating. It is an object of the present invention to provide a strip forming apparatus for a double-coated electric wire, which reduces the exchange of cutting blades and strip blades and the exchange of each adjusting member when forming a strip of an electric wire to achieve labor saving in mass production.

[0010]

SUMMARY OF THE INVENTION The present invention provides an electric wire processing machine in which a pair of guide rods are mounted on a machine frame, and a pair of cutter support members are provided on the guide rods so as to face each other. A pair of cutting blades and four sets of strip blades are provided on the support member so as to face each other, and a hot air jet nozzle is provided on the electric wire traveling path where the cutter support members are located so as to jet hot air to the electric wires to soften them. An air injection nozzle is provided near the hot air injection nozzle so as to forcibly drop the coating dust.

[0011]

According to the present invention, when the strip of the double-coated electric wire is formed, when the electric wire W is transferred to the predetermined length by the tachometer of the feed roller device while the wire W is stopped and stopped, the solenoid valve is opened by the control circuit. Then, a fixed amount of compressed air is supplied and heat is exchanged by the heater of the hot air jet nozzle, and hot air is jetted from the hot air jet nozzle toward the double-coated wire to heat and soften the strip forming range. The control circuit closes the solenoid valve, and then the first clamp device and the second clamp device grip the electric wire, and at the same time, the pair of cutter support members are slid inwardly along the guide rods. By moving the electric wire, the electric wires are cut by the cutting blades, the strips are cut into the coatings by the four sets of strip blades, and then the electric wires are held by the first clamping device and the second clamping device. Outside each other at By moving, each double coating on the end of the electric wire is pulled out by four sets of strip blades to form each strip on the end of the electric wire, and the double coated electric wire is heated to soften and cut. And strip work is facilitated to extend the life of the cutting blade and strip blade,
The number of replacements of cutting blades and strip blades and each adjustment member when forming a strip of a double-coated electric wire is reduced, and labor is saved by mass production.

[0012]

The present invention will now be described with reference to the illustrated embodiments.

1 to 4, reference numeral 1 is a machine frame (frame) in an electric wire processing machine, and a bearing 1a of the machine frame 1 is horizontally mounted with a pair of guide rods 2. A pair of cutter support members 3 that are integral with a pair of sliding members are provided on the guide rods 2 so as to face each other and be slidable. Further, each cutter supporting member 3 has a pair of cutting blades 4 and four sets of strip blades 5a, 5b, 6a,
6b is removably inserted through each adjusting member (spacer) 7, and the strip blades 5a and 5b have a coating Wc of the double-coated electric wire W more than the other strip blades 6a and 6b.
It is shortened according to the thickness of Wd. Further, a feed roller device 8 for the double-coated electric wire W is provided on the machine frame 1 at a position orthogonal to each of the cutter supporting members 3 so as to form an electric wire traveling path 11. A first clamp device 9 and a second clamp device 10 are provided on the upper side so as to grip the electric wire W, and both the clamp devices 9 and 10 when forming the strip Wa of the electric wire W are shown in FIG. As shown in A), (B) and (C), the electric wire W is provided so as to reciprocate in the length direction.

On the other hand, as shown in FIGS. 1 and 2, a hot air jet nozzle 12 is provided on the running path 11 of the double-coated electric wire W where the cutter supporting members 3 are located.
Double-coated electric wire W by injecting hot air of about 80-90 °
The hot air jet nozzle 12 is provided with a heater 12b in the nozzle body 12a, and the solenoid valve 1 is passed through the nozzle body 12a through the air supply pipe 13.
4 is connected. The solenoid valve 14 is connected to an air supply source 15, and the solenoid valve 14 is connected to a control circuit 16. Further, this control circuit 16
Is connected to a tachometer 17 for measuring the length of the feed roller device 8 for the double-coated electric wire W, such as a tachometer or an encoder. Furthermore, an air injection nozzle 18 is provided in the vicinity of the hot air injection nozzle 12 so as to forcibly inject the coating dust and drop it. Is injecting. Furthermore, a hopper 19 is arranged in the machine frame 1 immediately below the air injection nozzle 18, and the hopper 19 is adapted to store the coating waste from the air injection nozzle 18.

The operation of the present invention will be described below.

Therefore, the strip Wa of the double-coated electric wire W is
In the case of molding, when the feed roller device 8 is driven, the double-coated electric wire W is transported to the predetermined length by the tachometer 17 connected thereto, and is stopped. 16 opens the solenoid valve 14 to supply a fixed amount of compressed air to the hot air jet nozzle 12, and the heat of this compressed air is exchanged by the heater 12b of the hot air jet nozzle 12; Hot air of about 80 to 90 ° is jetted toward the double-coated electric wire W and heated to form the strip Wa of the double-coated Wc and Wd in a forming range (about 5 to 8c).
m) to soften the double coatings Wc and Wd, the control circuit 16 closes the solenoid valve 16, and then the first clamping device 9 and the second clamping device 10 operate as described above. At the same time as gripping the electric wire W, the pair of cutter supporting members 3 are slid inwardly along the guide rods 2 to cut the electric wire W by the respective cutting blades 4 to form four sets of strip blades. 5a, 5b, 6a, 6b, after making strip cuts on the respective coatings Wc, Wd, moving the wires W outward while holding the electric wire W by the first clamping device 9 and the second clamping device 10. Thus, each of the double coatings Wc and Wd at the end of the electric wire W is provided with four sets of strip blades 5a,
Each strip Wa is formed at the end of the double-coated electric wire W by being drawn out by 5b, 6a, 6b.

In this way, the present invention provides a double-coated electric wire W.
Before forming the strip Wa, the double coatings Wc and Wd are softened to facilitate cutting and stripping work, and a cutting blade 4
And a cutting blade 4 for extending the life of the strip blades 5a, 5b, 6a, 6b to form the strip Wa of the electric wire W
By replacing the strip blades 5a, 5b, 6a, 6b and adjusting each adjusting member 7, the mass production is reduced.

[0018]

As described above, according to the present invention, in a wire processing machine in which a pair of guide rods are mounted on a machine frame, and a pair of cutter support members are provided on both guide rods so as to face each other, A pair of cutting blades and four sets of strip blades are provided facing each other on both of the cutter supporting members, and a hot air jet nozzle is provided on the electric wire traveling path where the two cutter supporting members are located to inject hot air into the electric wires to soften them. Since the air jet nozzle is provided in the vicinity of this hot air jet nozzle to drop the coating dust, the double coating is softened to facilitate cutting and stripping work and prolong the life of the cutting blade and strip blade. Not only is it possible to reduce the amount of labor required for mass production by exchanging cutting blades and strip blades when molding electric wire strips, but also reducing the adjustment of each adjustment member. To.

[Brief description of drawings]

FIG. 1 is a diagrammatic view of a strip forming apparatus of the present invention.

FIG. 2 is a perspective view of the same.

FIG. 3 is a diagram for explaining the operation of the present invention.

FIG. 4 is a diagram for explaining an electric wire used in the strip forming apparatus of the present invention.

FIG. 5 is a view for explaining an electric wire used in a conventional strip forming apparatus.

FIG. 6 is a front view of a conventional strip forming apparatus.

FIG. 7 is a plan view of the same.

FIG. 8 is a view for explaining the operation of a conventional strip forming apparatus.

[Explanation of symbols]

 1 Machine Frame 2 Guide Rod 3 Cutter Support Member 4 Cutting Blade 5a, 5b, 6a, 6b Strip Blade 12 Hot Air Jet Nozzle 18 Air Jet Nozzle

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-48-82374 (JP, A) JP-A-49-62968 (JP, A) JP-A-53-135476 (JP, A) JP-A-57- 132606 (JP, A) JP 61-139209 (JP, A) JP 3-297085 (JP, A) Actually opened 50-68283 (JP, U) Actually opened 55-25776 (JP, U) 58-22024 (JP, U)

Claims (1)

[Claims] 1. An electric wire processing machine in which a pair of guide rods are mounted on a machine frame, and a pair of cutter supporting members are provided on both of these guide rods so as to face each other. A pair of cutting blades and four sets of strip blades, a hot air jet nozzle provided on the electric wire running path where the cutter supporting members are located so as to soften the hot air by blowing hot air to the electric wire, and the hot air jet nozzle. And an air injection nozzle provided so as to forcibly drop the coating dust in the vicinity of the.