JP2001045622A - Chuck for covered cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To catch a covered cable, without crushing it even though slip-stop is certain. SOLUTION: This chuck has catching faces 10s and 20s and relatively draws a covered cable L caught with these catching faces 10s and 20s, and this is so made s to constitute longitudinal split form at the inside periphery of a cylinder, making the catching faces 10s and 20s correspond to the roughly outside peripheral form of the covered cable L. Specifically, this chuck consists of a pair of blocks 10 and 20, and for their opposed faces 11 and 21, one hand is shaped like a substantially V-shaped trough, which guides the covered cable L to the bottom of the trough constituted of the holding face 20s, and the other hand is shaped like a crest corresponding to the trough, and the catching face 10s is made at the ridge section of the top, so that the catching face at the ridge section has a guide part for guiding the covered cable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a chuck for a covered electric wire, which is used as an example of incorporating the covered electric wire into a cutting and peeling device.

[0002]

2. Description of the Related Art In a cutting and peeling apparatus for a covered electric wire,
Processing such as cutting and peeling to a desired length is performed by an operation such as sending out the covered electric wire and pulling back the sent out wire. In particular, the peeling of the coating is for preparing both ends of the cut-out electric wire for connection processing such as soldering.

[0003] One method of such stripping treatment is to cut the end of the electric wire in a ring-shaped manner by the stripping amount of the coating without cutting the core, and to pull the cut coating from the core. Peeled. As one method of pulling out, there is a method in which the coating of the stripping allowance is gripped by a blade or the like, and the coated electric wire is gripped and pulled by a chuck. Alternatively, there is a method of gripping and fixing the coated electric wire with a chuck, and pulling out the coating with a blade or the like. When the wire is pulled, the electric wire is gripped relatively strongly so as not to slip out of the chuck.

As shown in FIG. 8, many such chucks perform opening and closing operations such as a pair of switches 200 gripping and releasing the covered electric wire L. There are various types of opening and closing operations, such as those that perform a linear movement as shown in the drawing and those that are opened and closed by rotation as shown in FIG.

The facing surface of the switch is a gripping surface, and when closed, the outer peripheral surface of the covered electric wire is gripped. There is a devised method such as providing a non-slip with a knurled edge as shown in FIG. Further, even if such various kinds of anti-skids are provided, since the pulling force at the time of peeling is relatively strong, it is gripped with a considerable force.

[0006]

However, the gripping surface is flat, and the coated wire is strongly tightened from both sides with this gripping surface. This is crushed in a planar manner, which is not preferable in terms of the quality of the product (for example, a gap is formed when a waterproof cap is inserted into a covered electric wire). Not only the coating but also the inner core wire may be crushed and scratched, which is still undesirable. In addition, since the wire with a circular cross section is gripped by the flat gripping surface, the area that is gripped and obtains frictional resistance is limited to the vicinity of both sides of the wire and is narrow. Dropouts and gaps occur. Therefore, in order to prevent this, gripping is performed by tightening more strongly, and crushing of the cover and crushing of the core wire are further strengthened.

[0007] In view of the above problems, an object of the present invention is to provide a coated electric wire chuck that can hold a coated electric wire without crushing it while ensuring slip prevention.

[0008]

Means for Solving the Problems and Effects of the Invention In order to solve the above problems, in the invention according to the first aspect, there is provided a chuck for gripping a covered electric wire with a gripping surface and pulling relatively relatively. The surface was formed corresponding to the substantially outer peripheral shape of the covered electric wire. Pulling relatively means that it does not matter which of the chuck and the wire puller (the blade in the above example) performs the moving operation for pulling at the fixed position.

Since the outer periphery of the electric wire is gripped by the gripping portion having the same shape as this, there is no possibility of gripping and crushing only both sides of the electric wire as in the case of gripping an electric wire having a circular cross section with a flat gripping surface.

Further, the area for obtaining the frictional resistance is not limited to both sides of the electric wire, and is substantially the entire cross section of the electric wire, so that the increased frictional resistance makes it difficult to slip and provides a good anti-slip.

Although the shape of the gripping portion eliminates crushing, it also provides a good anti-slipping. Such a good anti-slipping eliminates the need for a strong grip unlike the prior art, thus avoiding crushing. The crushing is further eliminated in combination with the avoidance of the crushing by the formation corresponding to the outer peripheral shape.

According to the second aspect of the present invention, the gripping surface is formed so as to form a vertically divided shape of the inner peripheral surface of the cylinder. Therefore, the entire circumference of the insulated wire having a normal circular cross section can be gripped over a predetermined length, and can be gripped with a good anti-slip without being crushed.

According to the third aspect of the present invention, the coated electric wire is gripped by a pair of blocks, and at this time, the opposing surfaces of these blocks are substantially V-shaped for guiding the coated electric wire to a valley bottom formed by one of the gripping surfaces. And the other forms a chevron corresponding to the valley, a grip surface is formed at the ridge portion of the peak, and the grip surface of the ridge portion has a guide portion for guiding the covered electric wire. . Therefore, the coated electric wire can be grasped accurately. In particular, unlike the conventional case of gripping at an arbitrary location on a plane, if the gripping surface has a shape corresponding to the substantially outer peripheral shape of the covered wire, the gripping surface is not guided to a fixed position on the block facing surface. Is not accurately grasped,
Such requirements can be realized.

[0014]

Next, an embodiment of the present invention will be described. As shown in FIGS. 1 and 2, the chuck 1 has a pair of metal blocks 1 mounted and supported on a case 2.
The main components are 0, 20 and an air cylinder 30 for opening and closing the same.

The case 2 is formed to be rectangular and flat, and a pair of two blocks 10 and 20 are pivotally supported (P, P) by the end of the case 2 so as to be able to open and close.
Each of the blocks 10 and 20 is connected to a drive unit 31 that moves forward and backward by an arm 32. The drive unit 31 is advanced and retracted by an air cylinder 30 housed in the case 2, and the pair of blocks 10 and 20 are opened and closed in accordance with the advance and retreat.

The block comprises a chevron block 10 and a trough block 20 as shown in FIGS. 3 to 5, and the opposing surfaces 11, 21 which overlap when the closing operation is performed form a chevron and a trough. In addition, gripping surfaces 10s and 20s for gripping the coated electric wire are formed on a part of the both opposing surfaces. That is, in the opposing surfaces 11 and 21, one of the valley blocks 20 forms a substantially V-shaped valley, and the other valley block 10 forms a valley corresponding to the valley. In addition, gripping surfaces 10s, 20s
Since the insulated wire L has a circular cross section,
s and 20s correspond to the substantially outer peripheral shape of the electric wire by forming a vertically divided shape of the inner peripheral surface of the cylinder.
s and 20 s are formed at the valley bottom of the valley block 20 and the ridge portion of the chevron block 10, respectively. Further, the mountain block 10 is provided with guide plates 12 and 12 having V-shaped guide grooves at both ends of the ridge line, so that the electric wires guided by the V-shaped guide grooves 13 can reach the gripping surface 10s at the V bottom. Has become.

When the pair of blocks 10 and 20 are used, the chuck 1 is arranged so that the lengths of the holding surfaces 10s and 20s are aligned with the direction of the covered wire L as shown in FIG. As shown in FIG. 6, the coated electric wire is fixed against any external force F that draws the electric wire.

As shown in FIG. 7, the coated wire cutting / peeling device 100 cuts and peels the coated wire L with cutting blades 40, 40 composed of a pair of V blades. And the cutting blade is moved, the coating is pulled out from the core wire N and peeled. At the time of peeling, the covered electric wire L fed into the apparatus 100 is fixed by the chuck 1, and the fixed covered electric wire L is cut by the cutting blade 40,
The pulling force is applied to the coated electric wire by the cutting blade, but the chuck 1 firmly holds the wire.
It does not slip and does not collapse when gripped.

The chuck may draw the covered electric wire. In the case of the example of the cutting / peeling apparatus, the cutting blade does not move to pull the coated electric wire, and the chuck may move to draw the coated electric wire when the cutting blade is cut into the coating.

The present invention is not limited to the above embodiment. The opening / closing operation of the gripping surface is not limited to the above-described rotation operation, and may be any operation. The grip surface may be provided with various types of non-slip, and may be provided with a concave / convex groove or a return shape.

[Brief description of the drawings]

FIG. 1 is a view of a chuck shown in an embodiment, and shows a state in which a block is closed.

FIG. 2 is a diagram showing a state where a block is opened.

FIG. 3 is a partial perspective view of the chuck in a state where a block is half-opened.

FIG. 4 is a partially enlarged view of a state in which the block is closed, and also shows a state in which the covered electric wire is gripped on the gripping surface.

FIG. 5 is a partially enlarged view of a state where a block is opened.

FIG. 6 is a diagram showing a state in which a coated electric wire is gripped by a chuck.

FIG. 7 is a diagram in which a chuck is incorporated in a cutting and peeling apparatus.

FIG. 8 is an explanatory view of a conventional chuck.

FIG. 9 is also an explanatory view of a conventional chuck.

[Explanation of symbols]

 Reference Signs List 1 chuck 10, 20 block 11, 21 facing surface 10s, 20s gripping surface 30 air cylinder 31 drive unit 32 arm 40 cutting blade L coated electric wire

Claims (3)

[Claims] 1. A chuck having a gripping surface and relatively pulling a covered electric wire gripped by the gripping surface, wherein the gripping surface is formed so as to correspond to a substantially outer peripheral shape of the coated electric wire. Insulated wire chuck. 2. The coated wire chuck according to claim 1, wherein the gripping surface is formed so as to form a vertically divided shape of the inner peripheral surface of the cylinder. 3. The chuck according to claim 2, further comprising a pair of blocks for gripping the coated electric wire, and opposing surfaces of these blocks, each of which has a substantially V-shape for guiding the coated electric wire to a valley bottom formed by the gripping surface. A valley shape, and the other forms a mountain shape corresponding to the valley shape, a grip surface is formed at a ridge portion of the peak, and a guide portion for guiding a covered electric wire is provided on the grip surface of the ridge portion. And coated wire chuck.