JPH0344415Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a portable wire cutting device that is mainly used for cutting metal wire materials such as wires and relatively small diameter metal bars. Regarding.

(Prior Art and its Problems) Conventionally, the only portable cutting devices for metal wire materials as described above have been completely manual cutting devices such as so-called metal cutting scissors or metal cutting saws. When cutting metal wire materials at unspecified locations such as on-site work, not only is the work efficiency low, but the worker is also forced to take a heavy physical burden.

(Technical means for solving the problem) The present invention was developed in view of the above circumstances, and provides a portable wire cutting device that can automatically cut wires by driving a motor. Therefore, the technical means for achieving this purpose is to attach a rotating shaft body 2 to a casing 1, in which a right spiral groove 4A and a left spiral groove 4B are continuously formed in an endless shape on the outer peripheral surface. A sliding member 8 is provided on a movable member 8 which is pivotally supported within the casing 1, and which is operatively connected to a drive motor 3 provided within the casing 1, and which is supported so as to be able to move only in the axial direction of the rotating shaft 2. The child 10 is engaged with the spiral grooves 4A and 4B, and cutting blades 14 and 14 are provided at the front end of the rotary shaft body 2, respectively.
A pair of clamping rods 12, 12 having a diameter of The link mechanisms 15, 15 are pivotally connected to the movable member 8 via mechanisms 15, 15, and the reciprocating movement of the movable member 8 due to the rotation of the rotating shaft body 2
The cutting edges 14, 14 of the clamping rods 12, 12 through
It is characterized by being configured so that they can be opened and closed mutually.

(Example) An example of the present invention will be described below based on the drawings.

In FIGS. 1 to 3, 1 is a casing, 2 is a rotating shaft supported in the casing 1, and 3 is an electric motor for rotationally driving the rotating shaft 2, and the rear end inside the casing 1 is Equipped on the side.

A right helical groove 4A and a left helical groove 4b are continuously formed in an endless shape on the outer peripheral surface of the rotary shaft body 2, and the rear end portion of the rotary shaft body 2 is connected to the rotary shaft 3a of the motor 3. The rotating shaft body 2 is connected so as to be integrally rotatable.
The front end portion of is rotatably supported by a bearing portion 7a of a fixing member 7 fixed between the brackets 5, 5 with screws 6. Incidentally, the brackets 5, 5 are integrally attached to the casing 1. A cylindrical movable member 8 is externally fitted onto this rotary shaft body 2 through its fitting hole 9 so as to be slidable in the axial direction.
However, a pair of sliders 10 and 11 are provided on the inner circumferential surface of the fitting hole 9 so as to project from each other, and these sliders 10 and 11 are arranged in the right spiral groove 4A or the left spiral groove 4.
It is engaged with either B. The movable member 8
is, by a part of a pair of link mechanisms described later,
It is supported so as to be non-rotatable and movable in the axial direction. Therefore, by rotating the rotary shaft body 2 several times in one direction by the motor 3, the slider 1
0 and 11 slide along the right spiral groove 4A and the left spiral groove 4B, the movable member 8 performs one reciprocating linear motion.

Further, in front of the rotating shaft body 2, a pair of clamping rods 12, 12 are arranged so as to intersect in a substantially X-shape, and their intersecting portions are pivotally connected with a pin 13.
Cutting blades 1 that open and close each other are provided at the front end of each clamping rod 12.
4 is formed. And this pair of pincers 1
As is clear from FIG. 1, the rear ends of 2 and 12 are connected to the cylindrical movable member 8 via a pair of link mechanisms 15 and 15 that are symmetrically arranged on both sides of the rotating shaft body 2. is pivotally connected to. Each link mechanism 15 consists of a long link 16 and short links 17A, 17B, and the long link 16 has its intermediate portion pivotally connected to the brackets 5, 5 with a pin 18, and its front end connected to the clamping rod 12. Pin 1 is attached to the rear end, and the rear end is attached to one end of the short links 17A and 17B.
9 and 20, and the short link 17
The other ends of A and 17B are pivotally connected to the movable member 8 via screw shafts 21 and 21'. Therefore, when the movable member 8 performs one reciprocating linear motion along the rotating shaft body 2, the pair of link mechanisms 15, 15 and the pair of clamping rods 12, 12 move as shown in FIG. Perform a rocking motion as shown by the dotted chain line,
The cutting blades 14, 14 at the tips of the pinching rods 12, 12 can perform one opening/closing movement, that is, one cutting operation.

As is clear from FIG. 3, the cylindrical movable member 8 consists of two half bodies 8a and 8b, and these half bodies 8a and 8b are connected to the respective flange portions 2.
2 and 22 are integrally connected by fixing them together with screws 23. Threaded shafts 21, 21' are screwed into these half bodies 8a, 8b in opposite directions and fixed thereto.
The sliders 10 and 11 are integrally protruded from the ends of the screw shafts 21 and 21', respectively, and the short links 17A and 17B of the link mechanisms 15 are provided at the outwardly projecting portions of the screw shafts 21 and 21', respectively. The ends are inserted into the nut 2 with their ends overlapping each other.
4, 24 (short links 17A, 17B)
(tightened enough to allow rotation).

As is clear from FIG. 2, the pivot point between the rear end of each clamping rod 12 and the front end of the long link 16 of each link mechanism 15 slides between separate brackets 25, 25 installed in the casing 1. It is movably held.

The casing 1 has left and right and upper and lower vertical frames 2.
6, 26 and 27, 27, and a ring-shaped horizontal frame 28 at the front, middle and rear parts that supports these from the inside,
29, 30 and the vertical frames 26, 26, 27, 27
and a cover body 31 disposed to cover the electric motor 3, and these vertical frames 26,
27, the ring-shaped horizontal frame 28, 29, 30, and the cover body 31 are screwed together and integrated as shown. Incidentally, reference numerals 32 and 33 are gripping hands attached to the center and rear end portions of the upper surface of the casing 1.

When using the wire cutting machine described above, when a switch (not shown) provided on the casing 1 is turned on, the motor 3 is activated and the rotating shaft body 2 is rotated, and the movable member 8 and the cutting edge 1 of the clamping rod 12, 12 via a pair of link mechanisms 15, 15.
4 and 14 perform an opening/closing operation to cut a filament material, for example, a wire W.

In the embodiments described above, an electric motor is used as the drive motor, but a hydraulic motor or the like may also be used. Note that in the case of an electric motor, power is normally supplied from the outside via a power cord, but it may also have a built-in battery.

Further, in the embodiment, two sliders 10 and 11 are attached to the inner peripheral surface of the cylindrical movable member 8, but only one slider is sufficient.

(Effects of the invention) According to the portable wire cutting machine of the invention, the cutting blade is automatically opened and closed by the drive of the motor, so cutting operations can be performed very easily and quickly. As a result, work efficiency on-site can be greatly improved, and the physical burden on workers can be significantly reduced. In particular, the cutter of the present invention uses a rotary shaft formed by connecting a right helical groove and a left helical groove, and uses a configuration in which the movable member is reciprocated by the rotation of this body, so it rotates only in one direction. This makes it possible to use an ordinary motor to provide a cutter that is easy to operate and manufacture.

[Brief explanation of the drawing]

FIG. 1 is a horizontal longitudinal cross-sectional view showing one embodiment of the cutting device of the present invention, FIG. 2 is a vertical longitudinal cross-sectional view of the same, and FIG. 3 is a cross-sectional view of the same. 1...Casing, 2...Rotating shaft body, 3...Motor, 4A...Right spiral groove, 4B...Left spiral groove, 8
...Movable member, 10, 11...Slider, 12...
Pincer rod, 14... Cutting blade, 15... Link mechanism, 1
6,17...link.

Claims (1)

[Scope of utility model registration request] A rotating shaft body, in which a right-hand spiral groove and a left-hand spiral groove are continuously formed in an endless shape on the outer peripheral surface, is pivotally supported in the casing, and this rotating shaft body is interlocked and connected to a drive motor installed in the casing. A slider provided on a movable member supported so as to be movable only in the axial direction of the rotating shaft body is engaged with the spiral groove, and a pair of cutting blades each having a cutting edge at the front end portion is provided in front of the rotating shaft body. The pinching rods are arranged in a substantially X-shape, their intersecting portions are pivotally connected, and the rear end portions of each of the pair of pinching rods are pivotally connected to the movable member via a pair of link mechanisms. The portable wire cutting device is configured such that the cutting blades of the pinching rod are opened and closed with each other via the link mechanism by reciprocating movement of the movable member due to rotation of the rotating shaft.