JPH0817530B2 - Electric wire strip cutting device - 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 strip cutting apparatus for cutting a core wire by forming a strip at an end of an electric wire or cable such as a thin-walled electric wire used for wiring in an automobile. .

[0002]

2. Description of the Related Art An electric wire strip cutting device of this type, which has been proposed so far, is constructed as shown in FIGS.

That is, in FIG. 3 and FIG. 4, a pair of upper and lower guide rails b are horizontally arranged in parallel between both side frames a which are integrated with a machine frame (not shown) and face each other.
Block-shaped cutter holders c are slidably mounted on the guide rails b so as to face each other.
In addition, on each upper part of each cutter holder c, each cutter blade d faces each other through each bracket e, and at the end of the electric wire W or cable such as a thin-walled electric wire, as shown in FIG. Is formed so as to cut the core wire Wb, and a recess f having vertical grooves f1 is formed vertically in the middle of each cutter holder c. Further, in the machine frame located between the both side frames a, fan gears g and h meshing with each other are provided on the support shafts g1 and h, respectively.
1 is rotatably mounted on a shaft, and each of the rollers i and j is loosely fitted into each of the vertical grooves f1 in a part of the sector gears g and h in which the vertical grooves f1 are located. It is pivoted at i1 and j1. Furthermore, an output shaft k1 of a cylinder device k, such as an air cylinder device, is connected to a part of the one fan gear g by a pin shaft m, and the base of the cylinder device k is the above machine. It is connected to the frame.

Therefore, the above-described electric wire strip cutting device drives the cylinder device k to output when the electric wire W such as a thin-walled electric wire or the strip Wa is formed at the end of the cable to cut the core wire Wb. By pulling the shaft k1 downward, one fan gear g connected to the output shaft k1 of the cylinder device k by the pin shaft m is turned clockwise around the support shaft g1 to mesh with the fan gear g. Since the other fan gears h rotate inwardly, the rollers i and j pivotally attached to the fan gears g and h are horizontally moved inward. Then, the rollers i and j horizontally move the cutter holders c inwardly along the guide rails b through the vertical grooves f1 for holding them.
Each cutter blade d integrated with each of the above cutter holders c
Each make a cut at the end of an electric wire W such as a thin-walled electric wire, pull the electric wire W in the axial direction to form a strip Wa, and then pull the cylinder device k downward to form a core wire Wb. You are disconnected.

[0005]

However, the above-described electric wire strip cutting device is caused by the backlash of the fan gears g and h, and the gap of the backlash causes the strip of electric wires or cables such as thin-walled electric wires. Not only is difficult to form by cutting with high precision, but also the cutting accuracy is reduced and vibration noise is generated due to the backlash of the fan gears g and h. Furthermore, between the teeth of the fan gears g and h. There is a problem that the coating waste Wc of the electric wire W generated when forming the strip Wa of the electric wire W enters and it is difficult to form the strip Wa with high precision.

The present invention has been made in view of the above-mentioned circumstances, and prevents deterioration of cutting accuracy and generation of vibration noise due to backlash of gears, and forms strips of electric wires between teeth of gears. An object of the present invention is to provide an electric wire strip cutting device capable of forming an electric wire or a cable strip such as a thin-walled electric wire with high precision by eliminating the intrusion of electric wire coating scraps.

[0007]

SUMMARY OF THE INVENTION According to the present invention, a pair of guide rails are horizontally arranged between two side frames facing each other, and the cutter holders having the cutter blades are slid on the guide rails facing each other. Freely fit, pivotally attach each swinging rod to each middle of the above-mentioned both side frames with each support shaft, attach each roller to each inner end of each swinging rod, and attach to each part of the both side frames. An elevating member is provided so as to hold each of the above-mentioned rollers and to be able to move up and down in a vertical direction by a cylinder device. Each rocking arm rod is connected with each pin, and each pivot arm is pivotally attached to a part of the both side frame with each pin shaft, and each pushing rod is connected with each pin at the end of each connecting rod. It is pivotally attached to the cutter holder with each pin shaft.

[0008]

According to the present invention, when a strip is formed at the end of an electric wire or cable such as a thin-walled electric wire to cut the core wire,
By driving the cylinder device and lowering the elevating member downward, the elevating member is lowered to a predetermined position, thereby forming a toggle link mechanism via each roller held by the elevating member. The swinging rods are rotated inwardly around the respective support shafts, and the connecting rods connected to the outer ends of the swinging rods are pushed up to raise the swinging arm rods. Rotate inwardly around each pin axis,
The push rods connected to the end portions of the connecting rods are moved inward along the guide rails with the cutter holders to make incisions in the electric wire coating with the cutter blades, and the electric wire itself. By pulling in the axial direction,
By forming a strip on this wire and then driving the cylinder device to lower the elevating member further downward, the core wire of the wire is cut, which reduces the cutting accuracy due to gear backlash and reduces vibration noise. Prevents the generation of the wire and eliminates the entry of wire coating scraps that occurs when forming the wire strip between the teeth of the gears, thus forming a wire or cable strip such as a thin-walled wire with high accuracy. It was done like this.

[0009]

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

In FIGS. 1 and 2, reference numeral 1 denotes both side frames which are integrally formed with a machine frame (not shown) and face each other, and between the upper portions 1a of the both side frames 1,
A pair of upper and lower guide rails 2 are horizontally arranged side by side. Block-shaped cutter holders 3 are slidably fitted on the guide rails 2 so as to face each other. or,
On each upper part of each cutter holder 3, each cutter blade 4 is provided so as to face each other through each bracket 5 and form a strip Wa at an end of an electric wire W such as a thin-walled electric wire to cut a core wire Wb. And above both sides frame 1
In the middle 1b, each swinging lever 6 having an inverted V shape is pivotally attached to each supporting shaft 7 so as to be swingable. Further, each roller 8 is attached to each inner end portion 6a of each swinging rod 6, and the pair of vertical guide grooves 1c formed inside the both side frames 1 are provided with a lifting member 9a. Is provided slidably in the vertical direction. Furthermore, recesses 10 having lateral grooves (guide grooves) 10a are formed on both sides of the elevating member 9 where the rollers 8 are located, and the recesses 10 are formed.
Each of the rollers 8 is fitted and held so as not to come out. Further, in the lower part of the elevating member 9, for example,
An output shaft 11a of a cylinder device 11 such as an air cylinder device is connected by a pin shaft 12, and the base of the cylinder device 11 is pivotally mounted on a machine frame (not shown) so as to swing.

On the other hand, each connecting rod 13 is connected to each outer end portion 6b of each swinging rod 6 by each pin 14, and each swinging arm rod 13 is connected to the upper end portion of each connecting rod 13. 15 are connected by the respective pins 16, and the pin shafts 17 are attached to the upper portions 1a of the both side frames 1.
Is pivoted in. In addition, at the upper end of each of the connecting rods 13,
Each push rod 18 is coaxially connected to each pin 16 and is pivotally attached to each cutter holder 3 by each pin shaft 19.

The operation of the present invention will be described below.

Therefore, now, an electric wire W such as a thin-walled electric wire is used.
When the strip Wa is formed at the end of the and the core wire Wb is cut, when the cylinder device 11 is driven to lower the elevating member 9 downward, the elevating member 9 descends to a predetermined position, and Since the swinging levers 6 constituting the toggle link mechanism are rotated inwardly around the support shafts 7 via the rollers 8 held by the lifting member 9, the swinging levers 6 are Each connecting rod 13 connected to the outer end portion 6b is pushed upward. Then, since the swing arm rods 15 rotate inwardly around the pin shafts 17, the push rods 18 connected to the end portions of the connecting rods 13 together with the cutter holders 3 move. A strip Wa is formed on the electric wire W by moving inwardly along the guide rails 2 and making a notch in the coating Wc of the electric wire W with both cutter blades 4 and pulling the electric wire W itself in the axial direction. Then, thereafter, the cylinder device 11 is driven to further lower the elevating member to cut the core wire Wb of the electric wire W.

As a result, it has been possible to prevent the reduction of the cutting accuracy and the generation of vibration noise due to the backlash of the fan gear already proposed, and to prevent the electric wire W generated when the strip Wa of the electric wire W is formed between the fan gears. The strip Wa of the electric wire W such as a thin-walled electric wire can be formed with high accuracy by eliminating the entry of the coating waste Wc.

In particular, as shown in FIG. 2, the present invention is
When the strip Wa is formed at the end of the electric wire W and the core wire Wb is cut, the cylinder device 11 is driven to lower the elevating member 9 downward so that each roller 8 held by the elevating member 9 is lowered. Since the swinging rods 6 constituting the toggle link mechanism are rotated inwardly around the respective support shafts 7 via the levers, the connecting rods 13 connected to the outer ends of the swinging rods 6 are connected to each other. Are pushed up, the swing arm rods 15 are rotated inwardly around the pin shafts 17, and the push rods 18 connected to the connecting rods 13 are moved together with the cutter holders 3. When the cutter blades 4 move inwardly along the guide rails 2 to make a cut in the coating Wc of the electric wire W, the swing arm rods 15 and the push rods 18 are arranged in a substantially straight line. Therefore, the cutting force of both cutter blades 4 can be effectively exerted. It is those that can.

[0016]

As described above, according to the present invention, a pair of guide rails 2 are arranged side by side between opposite side frames 1 and each cutter holder 3 has a cutter blade 4 on both guide rails. Are fitted so that they face each other and are slidable,
Each swinging rod 6 is pivotally attached to each supporting shaft 7 in the middle of the both side frames 1, and each roller 8 is attached to each inner end of each swinging rod.
The air cylinder device 11 holds each of these rollers.
An elevating member 9 is provided so as to ascend / descend in the vertical direction, and each connecting rod 13 is connected to each outer end of each rocking rod 6 by each pin 14, and each pin 16 is connected to the end of each connecting rod. Each swing arm rod 15 is pivotally attached to a part of the both side frame 1 by each pin shaft 17, and is connected to each end of the connecting rod 13 by each pin 16 and is pressed by each cutter holder 3. Move the moving rod 18 to each pin shaft 19
Since it is pivotally attached to the gear, it not only prevents the reduction of cutting accuracy and the generation of vibration noise due to the backlash of the gear, but it also prevents the inclusion of coating waste generated when forming the wire strip between the teeth of the gear. And the strip of thin-walled electric wire or thin-walled cable can be formed with high accuracy, and since the air cylinder device 11 is used, compared to a cylinder device using hydraulic pressure,
It has an excellent effect such that the impact at the time of pinching a foreign matter is alleviated for some reason and the breakage of each cutter blade 4 can be prevented.

[Brief description of drawings]

FIG. 1 is a front view showing a main part of an electric wire strip cutting apparatus according to the present invention.

FIG. 2 is a diagram for explaining the operation of the present invention.

FIG. 3 is a front view showing a main part of an already proposed electric wire strip cutting device.

FIG. 4 is a side view showing a state where electric wires are stripped.

[Explanation of symbols]

 1 Side Frame 2 Guide Rail 3 Cutter Holder 4 Cutter Blade 6 Swinging Rod 7 Support Shaft 8 Roller 9 Elevating Member 11 Cylinder Device 13 Linking Rod 15 Swinging Arm Rod 18 Pushing Rod

Claims (1)

[Claims] 1. A pair of guide rails 2 arranged side by side between opposite side frames 1 and cutter blades 4 slidably fitted on the guide rails facing each other. The cutter holder 3, the swinging rods 6 pivotally mounted on the support shafts 7 in the middle of the both side frames 1, the rollers 8 attached to the inner ends of the swinging rods, and the rollers. And an ascending / descending member 9 provided so as to ascend / descend in the vertical direction by the air cylinder device 11, and each connecting rod 13 connected to each outer end portion of each swinging lever 6 by each pin 14. Swing arm rods 15 connected to the end portions of the connecting rods by pins 16 and pivotally attached to a part of the both side frames 1 by pin shafts 17, and pin portions at the end portions of the connecting rods 13. Push rods 18 connected to the cutter holder 3 and pivotally attached to the cutter holder 3 by pin shafts 19.
An electric wire strip cutting device comprising: