JPS63221914A - Lead wire cutting device - Google Patents

Abstract

PURPOSE:To avoid the need of adjustment of a cutting edge and prolong the service life of a cutter by pivotally supporting one cutter onto a lever and pressing said cutter in a certain direction by a spring and holding said cutter is contact with the cutting edge guide part for the other cutter and always reducing the gap between both cutting edges to zero. CONSTITUTION:A holder 5 holds a cutter 1a, and is pressed by a certain pres sure by a compression spring 8, having a pin 7 as axis, and the transfer is restricted by a stopper 9 and the holder 5 is opened and closed, following the shift in the direction of arrow (h) of a V-shaped wedge 13 through a roller 12, having a pin 11 installed onto a lever 10 as axis. A cutter 1b is held by a lever 14, and opened and closed by the wedge 13, having a pin 16 as axis, and the wedge 13 is guiding-supported onto a body 19 and transferred in the direction of arrow (h) by an air cylinder 20. The cutting edge 3a of the cutter 1a contacts the cutter surface guiding guiding part 22 of the cutter 1b, and nips a lead wire 2, and the cutter 1a shifts along the guide part 22 in the direc tion of arrow (i), and contacts the lead wire 2, and cuts and separates the lead wire 2.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a lead wire cutting device.

2. Description of the Related Art As a conventional lead wire cutting device of this type, for example, a lead wire cutting device as shown in FIG. 6 is known.

This moves the cutter 1 in the direction of arrow e and moves the lead wire 2.
Method 2 of cutting the cutter 1 with the cutting edge 3 of the cutter 1. The structure was such that the cutter 1 was driven from the outside using an air cylinder or the like.

Problems to be Solved by the Invention In such a conventional device, the cutter 1 becomes dull due to wear, and it is difficult to adjust the gap m between the cutting edge 3. A mold equivalent to a precision mold is required, and the device is difficult to cut. Complication,
There have been problems in that higher accuracy leads to lower maintainability, shortened cutter life, and increased cost.

The present invention solves these problems, and by floating one side of the cutter, there is no need to adjust the gap between the cutting edges, extending the life of the cutter, and simplifying the device itself. The object of the present invention is to provide a cutting device.

Means for Solving the Problem In order to solve this problem, the present invention pivots one of a pair of cutters to a lever and always presses it in a fixed direction with a spring, so that the cutting edge of the other cutter is The blade is held so that it can be contacted with the guide part, and three vanes ensure that there is always zero clearance between the blade edges of the cutter.

Function: According to the present invention, with the above-mentioned structure, there is no gap between the blades, and the lead wire can be reliably cut. Particularly in the case of soft lead wires, the cutting edge of one cutter can be moved in the direction of separating the lead wire cutting section while being in contact with the cutting edge guide section of the other cutter, so that tensile force is also applied and the cutting can be performed reliably. It also extends the life of the cutter and makes it easier to install it when resharpening.

EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1 to 4.

In FIG. 1, reference numeral 5 denotes a cutter holder that holds the cutter 1a fixedly with a tightening bolt 6, and is always pressed with a constant pressure by a compression spring 8 in the direction of arrow f about a fulcrum pin 7, and is attached to a stopper 9. Movement is restricted. The cutter holder 5 is attached to a lever 10 and opens and closes in the direction of the arrow q about the fulcrum pin 11, following the movement of the ■-shaped rust 13 in the direction of the arrow 12 via the roller 12. The cutter 1b is fixedly held by a tightening bolt 15 on a lever 14, and is opened and closed in the direction of the arrow q by a ■-shaped groove 13, like the lever 1o, about a fulcrum pin 16.

This ■-shaped rust 13 is fixed to a slide block 17, and this slide block 17 is guided and supported by a main body 19 by a guide 18 so as to be slidable in the direction of the arrow. Said V
The shape rust 13 is moved in the direction of the arrow by the air cylinder 2o. Reference numeral 21 denotes a tension spring that keeps the lever 10.14 in constant contact with the V-shaped groove 13 via the roller 12.

The operation of the lead wire cutting device configured as above will be explained.

FIG. 2 is a diagram showing the state just before cutting the lead wire 2 by sandwiching it between the cutting edge 3a of the cutter 1a and the cutting edge 3b of the cutter 1b, and the cutter 1b has a cutting edge guide part 22 that guides the cutting edge 3a of the cutter 1a. ing.

In Fig. 3, (-) indicates the blade surface guide portion 2 of the cutter 1b.
The cutting edge 3a of the cutter 1a is in contact with the blade 6 and is about to pinch the vane wire 2. (b) shows a state in which the cutter 1a moves along the guide part 22 in the direction of arrow i and comes into contact with the lead wire 2, (C) shows a state in which the cutter 1a moves further beyond (b) and cuts the lead wire 2, Further progressing from (C), after cutting the lead wire 2, the cutter 18 is moved in the direction of arrow i to separate the lead wire 2. From this state, the cutting is completed and the cutter 1a is removed.

1b opens in the direction of the arrow.

FIG. 4 is a process diagram of the entire apparatus shown in FIG. 3, in which (1) shows before cutting, (2) shows the cutting state, and (3) shows the cutting completed state.

Effects of the Invention As described above, according to the present invention, lead wires can be cut reliably, the life of the cutter is extended, the cutter can be incorporated into automatic machines, and it is extremely advantageous in terms of improved reliability. Particularly in cutting soft lead wires, a force is applied in a direction to separate the lead wire cut portion after cutting, so that the lead wire can be cut reliably.

[Brief explanation of the drawing]

FIG. 1 is a lead wire cutting device 6-7 according to an embodiment of the present invention. FIG. 6 is a sectional view showing the principle of a conventional lead wire cutting device. 1a, 1b...Cutter, 2...Lead wire, 3a, sb...Blade tip, 6...Cutter holder, 1o...Lever, 13... ... ■ Shape rust, 21 ... Tension spring, 22 ... Blade guide section. Name of agent: Patent attorney Satoshi Nakao and one other person fα,
fb--Ittou, Par 2--Reed Island 3-Blade 5--Ka, Yuichifu) Reder Figure 1 to-
--b bar f3-1. / Nori f Bi Figure 2 Figure 3 (c2 (d) Figure 4 (B) (C)

Claims (1)

[Claims] (1) A lead wire cutting device in which a pair of cutters for cutting lead wires are each attached to a pair of levers, and one side of the cutter is pivoted to the lever. A lead wire cutting device characterized in that the lead wire cutting device is always pressed in a fixed direction by a spring and held so as to be able to come into contact with the blade edge guide portion of the other cutter.