JP2799113B2 - Wire clamping method and clamping device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for clamping a wire as a wire termination process in a winding machine.

[0002]

2. Description of the Related Art Conventionally, a wire clamp device as a wire terminal processing means in a winding machine has a structure in which a wire is generally sandwiched between a pair of clamp claws. For example, the wire is clamped by the force of a spring. ing. As a recent technology related to this type of wire clamp device, Japanese Patent Application Laid-Open No. 2-143408 discloses a "wire terminal treatment device for winding machine". The purpose and effect of this known invention is mainly to prevent cutting of the terminal wire and scattering of the broken wire, and the wire holding portion is as shown in FIGS. 4 (A) and 4 (B).
The pair of fixed clamp claws 1a shown in FIG. 1A are an integral member and have a pair of clamp surfaces 1b.
The pair of movable clamp claws 2a is also an integral member and has a pair of clamp surfaces 2b. And the same figure
As shown in (A), a pair of clamp surfaces 1b and 2b are separated.
In this state, the wire 42 is inserted, and the pair of movable clamp claws 2a are rotated clockwise (clockwise) in FIG.
As shown in (B), the wire 42 is clamped at two places . FIG. 5 shows a known example different from the above.
No. 00221. A pair of wire clamps 4 and 5 clamp the wire 6 '. When the wire clamp slides along the shaft 7 so as to approach and separate, the wire 6' is clamped / released. Further, when it turns around the shaft 7, it acts as scissors and can cut the wire 6 '.

[0003]

In the wire clamping technique in the above-mentioned known example, there is a problem that when tension is applied to the wire, the wire gets out of the space between the clamp claws. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and when a tension is applied to a wire held by a clamp claw, the holding force automatically increases, and the wire is clamped without the risk of the wire coming out. It is an object to provide a method and a clamping device suitable for carrying out the method described above.

[0004]

The basic principle of the present invention created to achieve the above object is to convert a tension applied to a wire into a clamping force of a clamp claw . As a specific method based on the principle described above, the clamping method of a wire according to the present invention is a method of holding clamped wire by the clamping claw of the pair, the one
One of the pair of clamp claws is constituted by a fixing member.
At the same time, the other is a movable clamp
The fixed clamp claw and the movable clamp
And release the wire between the claw and
The above wire is between the fixed clamp jaw and the movable clamp jaw.
If tension is applied to the wire in the pinched state, the wire
Due to the frictional force between the
The present invention is characterized in that a turning force in the wire holding direction is applied to the pump claw .

[0005] Further , a wire clamping device according to the present invention.
It is a device that holds clamped wire by a pair of clamp jaws, either one of the pair of clamp jaws
Is composed of a fixed member, and the other is reciprocally rotatable.
Movable clamp claw, fixed by reciprocating rotation
A structure in which a wire is clamped and released between a clamp claw and a movable clamp claw , and the wire is a fixed clamp claw.
And the movable clamp claws
When tension is applied to the wire, the distance between the wire and the movable clamp
The movable clamp pawl is turned in the wire clamping direction by frictional force.
Characterized in that it is configured to be moved .

[0006]

When the above-mentioned wire clamping method is carried out using the above-mentioned wire clamp device, there is no fear that the operation of inserting the wire between the pair of clamp claws will cause any particular difficulty.
After the wire is clamped, when tension is applied to the wire, the clamping force is automatically increased in proportion to the tension, so that there is no possibility of the wire coming out.

[0007]

FIG. 2 shows one embodiment of a wire clamping device according to the present invention.
Examples are shown, wherein (A) is a schematic plan view and (B) is a front view. A plurality of sets of clamp units 12 are arranged on the support beam 11. In the above clamp unit, a fixed clamp claw 12b and a movable clamp claw 12c are disposed in an outer cylinder 12a, and these clamp claws 12a, 12c are provided.
The upper end of b protrudes above the outer cylinder 12a. FIG. 1 is a schematic diagram for explaining the operation of the clamp claw.
The fixed clamp claw 12b is fixed to the outer cylinder 12a. The movable clamp claw 12c is shown by a reciprocating circular arrow L-
As shown in FIG. 2, R is supported concentrically with the outer cylinder 12a so as to be reciprocatingly rotatable, and can support and drive the rotation as described later with reference to FIG.

[0008] As shown in FIG.
2c is rotated in the direction of arrow L,
Is inserted between the fixed clamp claw 12b and the movable clamp claw 12c. In this state (FIG. A), since the two clamp claws 12b and 12c are separated from each other, the insertion of the wire 21 can be performed without any particular difficulty. After gently sandwiching the wire 21 as described above,
(B) As shown in the figure, the movable clamp claw 12c is rotated in the direction of arrow R to pinch the wire 21. At this time, the rotational force in the direction of arrow R applied as an operation force from the outside is described later.
When the tension is applied to the wire, the pinching force increases.
Therefore, a relatively small force is sufficient as compared with the conventional example (for example, FIG. 4). In FIG. 1B, when a tension is applied to the wire 21 in the direction indicated by the arrow T, the frictional force between the wire 21 and the movable clamp claw 12c acts to apply a rotating force in the direction indicated by the arrow R to the movable clamp claw 12c. As a result, the tension in the direction of arrow T is converted into the pinching force of the wire 21, and the wire is more strongly pinched as it is pulled. When the tension in the direction of the arrow T disappears, the movable clamp claw 12c is moved by the arrow L with a relatively small force.
The wire 21 can be released by pivoting in the direction.

In each of the clamp units 12 shown in FIG. 2, a drive bar A13 and a drive bar B14 are integrally fixed to a movable clamp claw 12c rotatably fitted to the outer cylinder 12a. I have. When implementing the present invention, these drive bars A and B may be configured as one member or may be configured separately. The movable clamp claw 12c is urged by the tension spring 15 to rotate in the clamping direction (clockwise in the figure) via the drive bar A13. On the other hand, in parallel with the direction in which the plurality of sets of
6 is slidably supported in the axial direction and reciprocally operable. The tip of the drive bar B14 is engaged with the operation rod 16, respectively. When the operation rod 16 is operated to the left in the figure, the movable clamp claw 12c is released via the drive bar B14 in the clamping release direction (in the figure). (Clockwise). In the apparatus of the embodiment shown in FIG. 2, when no other operating force is applied to the operating rod 16, the movable clamp claw 12c
Is rotated in the holding direction and abuts on the fixed clamp claw 12b. Then, when the operation rod 16 is slid to the left in the figure, the movable clamp claws 12c of the plural sets of clamp units 12 arranged in a row are simultaneously rotated in the clamping release direction, and as shown in FIG. ), The movable clamp claw 12c is separated from the fixed clamp claw 12b. Therefore, the wire 21 can be easily inserted into the gap. Next, when the operation force applied to the operation rod 16 is released, the movable clamp claw 12c is released.
Is rotated clockwise by the action of the tension spring 15 as shown in FIG. 1B. Figure 1 above
When the tension in the direction of arrow T is applied to the wire 21 in the state shown in FIG. 3B, the frictional force between the wire 21 and the movable clamp claw 12c causes the movable clamp claw 12c to rotate in the direction of arrow R to pinch the wire 21. Find out. Thereby, the wire 21 is self-locked and does not come out. At this time, the wire 21
Is indicated by an imaginary line 21 ', and the movable clamp claw 12c
If you wrap it around, it will be more securely pinched.

As a configuration for realizing the self-locking function shown in the principle diagram shown in FIG . 1, as shown in FIG. 3 , a fixing member 19 and an eccentric cam 20 are opposed to each other. Is also good. With this configuration, the fixing member 19 performs a function corresponding to the fixed clamp claw 12b in the above-described embodiment, and the eccentric cam 20 performs a function corresponding to the movable clamp claw 12c in the above-described embodiment .

[0011]

As described above, when the clamping method of the present invention is carried out using the clamping device of the present invention, the clamping force is automatically increased when tension is applied to the wire, and the wire is surely pulled out. It has an excellent practical effect of being prevented.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view of a principal part for describing a basic principle, operation, and effects of the present invention.

FIG. 2 shows an embodiment of the clamping device according to the invention,
(A) is a plan view and (B) is a front view.

3 is a schematic diagram of different embodiments and FIG. 1.

FIGS. 4A and 4B are explanatory diagrams each showing a known wire clamp device.

FIG. 5 is a perspective view showing a known example of a wire clamp device.

[Explanation of symbols]

1a: Clamping claw in a known example, 1b: Clamping surface in the same manner, 2a: Clamping claw in the same manner, 2b: Clamping surface in the same manner, 4: Wire clamp in a known example different from the above, 5
... Similar wire clamp, 6 '... Wire, 12 ... Clamp unit constructed by applying the present invention, 12a ... Outer cylinder, 12
b: fixed clamp claw, 12c: movable clamp claw, 13:
Drive bar A, 14 ... drive bar B, 15 ... tension spring, 16 ... operating rod, 19 ... fixed member, 20 ... eccentric cam, 21 ... wire, 21 '... wire wound around state to the movable clamp jaws.

Claims (5)

(57) [Claims] 1. A method for holding a wire by clamping between a pair of clamp claws.
One of them is composed of a fixing member, and the other is
Fukukaido possible a movable clamp jaws, shall clamping and releasing the wire between the clamp claw and a movable clamping by the reciprocating rotation, and the wire is fixed Kura
In the state of being clamped between the pump claw and the movable clamp claw
When tension is applied to the wire, the wire and the movable clamp
Wire against the movable clamp pawl due to frictional force between
A method for clamping a wire, characterized in that a rotating force in a clamping direction is applied . 2. An apparatus for clamping and holding a wire between a pair of clamp claws, wherein said pair of clamp claws hold said wire.
One of them is composed of a fixing member, and the other is
A movable clamp claw that is capable of returning rotation and has a structure in which a wire is pinched and released between a fixed clamp claw and a movable clamp claw by reciprocating rotation thereof, and the wire is fixed.
In the state of being clamped between the clamp claws and the movable clamp claws
When tension is applied to the wire, the wire and the movable clamp
The movable clamp pawl is pinched by a wire due to the frictional force between the pawl and the pawl.
Characterized in that it is configured to rotate in the holding direction ,
Wire clamping device. 3. The wire clamping device according to claim 2, wherein the movable clamp pawl held so as to be reciprocally rotatable is constituted by an eccentric cam. . 4. The movable clamp claw that reciprocates and rotates,
The wire clamping device according to claim 2 or 3, further comprising a spring means for urging a rotational force in a direction to clamp the wire. 5. The reciprocating movable clamp claw according to claim 1,
5. An operation mechanism for rotating the wire in a direction to release the holding of the wire, wherein the operation mechanism is provided.
A wire clamping device according to any one of the preceding claims.