JPS58163214A - Stripper for coated wire - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a stripper for removing a suitable size of the covering from the end of a covered electric wire in the assembly work of electric appliances, electric cords, etc.

PRIOR ART Conventionally, as schematically shown in FIGS. 1 and 2, a stripper for a covered electric wire has two abutment blades 1.1 with semicircular holes at several places corresponding to the diameter of the core wire of the covered electric wire. It was common to have a structure in which a 2.2-ft shaped cut-out section was provided.

As an example of such a nipper, for example, a nipper in which a part of the cutting edge is provided with a covering cutting part 2.2 is commercially available. This type of insulated wire stripper is first equipped with a butt blade 1.1.
are separated from each other, a covered wire is inserted into one of the covering cutting parts 2, 2, and the abutting blade 1.1 is applied in the state shown in FIG. 1 to cut the covering. Thereafter, the wire to be crushed is pulled in a direction perpendicular to the butting blades 1, 1, and the cut covering is separated from the core wire. Therefore, the conventional stripper requires two operations: cutting the coating and removing the cut coating, which requires a considerable amount of man-hours when the coating needs to be removed frequently. In addition, when positioning the insulated wire at the insulated cutting part 2.2, the diameter of the insulating
．． Since the diameter is larger than that of No. 2, great care was required in positioning the core wire so as not to cut it.

OBJECTIVES An object of the present invention is to provide a stripper for covered wires that can solve these problems and easily cut and remove the covering in one operation.

Example Embodiments of the present invention will be described in detail below with reference to the drawings.

In FIGS. 3 to 5, positioning recesses 5.5 with a semicircular cross section matching the diameter of the covered wire are provided on the tip edges 4, 4 of the pair of shearing blades 3.3 at corresponding positions. The entire leading edge is machined. And the gum 1111 side7.
Relief grooves 6, 6 having a semicircular cross-sectional shape slightly larger than the diameter of the core wire of the covered electric wire are machined in the four positioning parts 5.5 so as to extend parallel to the shearing direction. The groove width W of this clearance groove 6.6 is 4.4 at the tooth tip edge.
The shear distance increases gradually as the distance from In addition, instead of increasing the groove width, the relief g6. ．．
The depth of 6 may be configured to increase with increasing shear distance.

FIGS. 3 and 4 show a state in which the upper shearing blade 3 is moved in parallel in the direction of the arrow in the figures by a mechanism not shown, and placed at the position where □ just starts shearing.

At this time, the positioning part 5.5 is shown in FIG.
s It has a circular shape that is slightly larger than the diameter of the covered wire. Further, the relief groove 6.6 secures a cylindrical space between the shearing blades 3, 3, which is slightly larger than the diameter of the core wire of the covered electric wire, as seen in FIG.

To remove the coating from a covered electric wire using such a stripper, the following procedure may be performed. That is, first, move the shearing blade 3 located above upward, position the part of the covered wire to be cut on the positioning section 5 of the downward shearing blade 3, and make the tip of the wire protrude to the side surface 7 of the garden. . At this time,
Since the diameter of the four positioning parts 5 is matched to the diameter of the coating,
Positioning can be done extremely easily and reliably.

Next, when the upper shearing blade 3 is moved downward, shearing of the coating starts after reaching the third position. At this time, since the tip of the covered wire located below the upper shearing blade 3 is not pressed down from below, it begins to bend downward at the shearing surface. When the shearing blade 3 is further moved, the shearing and bending of the sheathing progresses, and the shearing of the sheathing is completed when the shearing blade 3 has moved downward by the diameter of the covered wire from the start of shearing. When the upper shearing blade 3 is moved further downward, the sheared coating is finally pulled out from the core wire and automatically falls downward, completing the removal of the coating (FIG. 6). At this time, the core wire of the part from which the sheathing has been removed is accommodated within the cylindrical space secured by the clearance grooves 6, 6 of the shearing blade 3°3, so that the shearing of the shearing lfr
They are never sheared at the same time. In this way, the coating can be reliably cut and removed at a predetermined position simply by moving the upper shearing blade 3 downward a certain distance.

In the above description, the positioning recesses 5, 5 have a semicircular cross-sectional shape, but it goes without saying that they may have a 7-shaped groove. An example in which a scissors blade is used as the blade will be described. Since the shearing action in this case draws a circular arc centered on the pin 8, the relief pieces 6, 6 are similarly processed into a circular arc shape by closing the pin 8 in the middle.

With this configuration, it is possible to achieve the same effect as the above embodiment while ensuring the function as scissors.

In FIG. 1, the present invention is applied to the blade edge side of the pin 8, but it may be applied to the grip 9°9111I of the pin 8. In this case, there is an advantage that all the shearing blades from the pin 8 to the cutting edge side can be used as the original scissors.

As explained above, in the present invention, at the opposing positions of a pair of shearing blades, the tip edges of the teeth are provided with four positioning parts for the guide and the electric hook, and the inner surface of the shearing blades is provided with relief grooves parallel to the shearing direction. By providing each of them, the excellent effect of being able to easily and accurately remove a broken electric wire at any position with just one operation is achieved despite the simple structure.

[Brief explanation of the drawing]

Figure 1 is a front view showing the conventional technology, and Figure 2 is its A-A@
3 is a front view showing an embodiment of the present invention, FIG. 4 is a sectional view taken along the line B-B, FIG. 5 is a plan view thereof, and FIG. 6 is a diagram illustrating its operation. FIG. 3 is a sectional view taken along the line B--B, and FIG. 7 is a flat IfJ diagram showing another embodiment. Shear blade 3. Tooth tip edge 41 positioning section 5. Escape groove 6, bacteria inner surface 7゜Patent applicant Osamu Miwa Akiyo Burito
Patent Attorney On 1) Den Xuan Il1 Diagram I A Co A"B"

Claims (1)

[Claims] 1- At the corresponding positions of the pair of shearing blades, the tip edges of the shearing blades have four positioning parts for positioning the covered wire, and the south facing side has four positioning parts for positioning the core wire of the covered wire in parallel to the shearing direction. A temporary and electric wire stripper characterized by having relief grooves each having a semicircular cross-section slightly larger than the diameter. 2. The covered wire stripper according to claim 1, wherein the four positioning parts have a substantially semicircular 7R surface shape. B MiJ 18ff The coated wire stripper according to claim 1 or 2, wherein the width or depth of the groove increases with shearing distance. 4. The coated wire stripper according to any one of claims 1 to 8, wherein the pair of shearing blades are scissor blades.