JP3191421B2 - Nipper device with indexing mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nipper device attached to, for example, a winding machine to cut a wire, a solder icicle, and the like.

[0002]

2. Description of the Related Art When a wire is wound around a bobbin by a winding machine, a wire terminal is entangled with a terminal pin provided on the bobbin. Various methods have been used as methods for cutting and removing excess wire ends, but when the diameter of the wire is large, it is generally cut with a nipper. FIG.
(A), (B) and (C) show several examples of cutting the wire end with the nipper 6. (A) In the figure, the bobbin 1 is mounted on a spindle 2 arranged in the X-axis direction, and after winding while rotating, the wire 3 is entangled with the terminal pin 4 and the wire 3 is pulled out in the Y-axis direction. The terminal pin 4 in the vicinity of the terminal pin 4 with a nipper 6
Disconnect with In this case, the blade of the nipper 6 is moved in the X-axis direction so as to be easily understood from the drawing. Specifically, the blade of the nipper is moved in the XZ plane. However, in this figure (A), the Z axis is perpendicular to the paper surface, and the support shaft of the nipper is oriented in the Y direction. However, FIG. 3 (B)
When the wire 3 is pulled out in the X-axis direction and tied to the discarding tying pin 5 as described above, the nipper 6 is moved in the YZ plane. At this time, the support shaft of the nipper is in the X-axis direction.

FIG. 3C shows a further different case, in which a plurality of bobbins 1A, 1B, 1C are supported by an index 7, and the nozzles of the flyer 8 are rotated intermittently by 90 degrees about a point O. The wire 3 is wound while being fed from the wire 9 and is entangled with the terminal pin immediately before the start of winding of each bobbin and immediately after the end of winding. In such a case, the nipper must be moved in the auxiliary axis α direction, α ′ direction, or β direction, such as 6, 6 ′, 6 ″, depending on the situation.

[0004]

FIG. 3 (A),
As can be easily understood from (B) and (C), the nipper attached to the winding machine depends on the product specifications and the processing steps.
The support shaft of the nipper must be oriented vertically, horizontally, or at an acute angle to the horizontal. A nipper device for automatically cutting a workpiece set in a predetermined position at a predetermined position is disclosed in, for example, Japanese Patent Application Laid-Open No. Sho 61-230808, a linear projection cutting device and Japanese Patent Application Laid-Open No.
No. 159006 is known. However, in any of these nipper devices according to the known art, the support shaft of the nipper can move in parallel, but the inclination angle of the support shaft cannot be changed. FIG. 4A is a schematic view of a tool using a pneumatic cylinder disclosed in JP-A-2-60682. The known nipper 11 includes blades 11a and 11a 'and a handle 11
A pair of rod-shaped members b and 11c is pivotally mounted on a support shaft 11d and is urged in the expanding direction by a spring 11e. On the other hand, the pair of handles 11b, 1
A V-shaped cam 12 is arranged facing 1c to face the Z-axis direction. According to this configuration, the cylinder 13
The blades 11a and 11a 'can be opened and closed around the support shaft 11d in the Y-axis direction by the expansion and contraction (Z-axis direction) of the piston rod. However, the tilt angle position of the support shaft 11d of the nipper cannot be changed unless it is turned together with the V-shaped cam 12.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and quickly and easily adjusts the direction of a nipper support shaft so as to adapt to each of wires oriented in various directions. It is an object of the present invention to provide a nipper device capable of being used.

[0006]

According to the structure of the present invention, the inner cylinder is rotatably fitted to the outer cylindrical main body, and means for providing a moderation to the rotation is provided. The support shaft of the nipper is attached to the inner cylinder, and the nipper is rotated together with the inner cylinder, and the nipper is a cylinder provided on an outer cylindrical main body. Characterized in that it can be opened and closed by being driven by a.

[0007]

According to the above construction, since the inner cylinder rotatably fitted to the outer cylindrical body supports the support shaft of the nipper, turning the inner cylinder supports the nipper. The tilt angle of the shaft changes. Since the rotation of the inner cylinder is moderate, the rotation can be easily performed when an external force is applied in the rotation direction, and the rotation angle position is kept constant when no external force is applied.

[0008]

FIG. 4B is a schematic diagram for explaining the nipper of this embodiment and a driving part thereof. Since the conical cylindrical cam 14 is provided instead of the V-shaped cam 12 in the known example of FIG. 1A, the transmission function is maintained even when the support shaft 11d of the nipper is rotated around the Z axis. FIG. 1 is a perspective view showing one embodiment of the present invention, and FIG. 2 is a longitudinal sectional view of the same. FIGS. 1 and 2 show all the components denoted by reference numerals in the drawings. Reference numeral 15 denotes an outer cylindrical main body portion, and an inner cylinder 16 for holding the nipper is rotatably fitted thereto. Reference numeral 11 in FIGS. 1 and 2 denotes a nipper,
This is a component tool similar to the nipper 11 described in (B). The nipper support shaft 11d of the present example is configured to be much longer (about three times in this example) than the length L (see FIG. 2) required to function as a support shaft, and the diameter of the nipper holding inner cylinder 16 is set. It is almost the same size as D. The support shaft 11d is fitted into a hole formed in the inner cylinder 16, and is prevented from coming off by a push screw 11f.
As a result, the support shaft 11d is inserted and removed, and the nipper 11 is connected to the inner cylinder 1
6 can be quickly and easily detached and replaced, so that if the sharpness of the nipper blade deteriorates, it is replaced or polished. Also, the nipper can be replaced according to the diameter of the wire. Reference numeral 18 denotes an annular indexing panel. This member has a short cylindrical shape as a basic shape, and has irregularities as described later on both end surfaces thereof. The member is externally fitted to the nipper holding inner cylinder 16 and fixed with fixing screws 19. On the other hand, the outer cylindrical main body 15 is provided with a ball plunger (also called a Bohère spring) 20. An indexing groove is formed on the surface of the indexing disc facing the ball plunger 20 in the circumferential direction, and engages with the ball of the ball plunger 20. This gives moderation to the rotation of the inner cylinder 16 and the nipper 16. Therefore, when a rotational force equal to or greater than the moderation resistance is applied, the inner cylinder and the nipper rotate, and the angular position of the inner cylinder and the nipper around the Z axis is kept constant unless a separate external force is applied. The above rotation operation can be performed manually or automatically using a robot mechanism (not shown).
The annular indexing plate 18 of the present example is also provided with continuous circumferential irregularities 21 on the surface opposite to the indexing groove engaged with the ball plunger 20. With such a configuration, it is convenient when the inner cylinder 16 is manually turned by applying a hand tool to the unevenness, and also when the drive mechanism of the automatic machine is engaged. By providing such an automatic mechanism, the wire cutting operation can be fully automated. The annular indexing board 18 is slidably fitted to the inner cylinder 16 and fixed by fixing screws 19. With this configuration, it is possible to detachably replace the indexing board provided with different indexing grooves, thereby facilitating the setup change operation. According to the nipper device configured as described above, when the manual operation force or the operation force of the automatic machine is applied to the indexing panel 18 to rotate the inner cylinder 16 around the Z axis, the support shaft 11d of the nipper 11 Adapted to wires that are stretched in various directions because they are changed in the Y direction (vertical), the X direction (horizontal), or the inclined direction between them, and the state after the change is maintained. Can be.

As a recommended mode when the nipper device of the present embodiment is used, a robot hand (not shown) that arbitrarily controls and drives X, Y, and Z coordinate values in a three-dimensional space.
The outer cylindrical main body 15 is attached to the main body. The nipper 11 of the present embodiment can rotate around the Z-axis with respect to the outer cylindrical main body 15, but does not rotate around the X-axis and the Y-axis. Practical performance is further improved by mounting the robot so that it can be tilted and driven with respect to the robot hand.

[0010]

As described above, according to the apparatus of the present invention, the direction of the nipper support shaft can be adjusted quickly and easily, so that it is possible to adapt to each wire in various directions. .

[Brief description of the drawings]

FIG. 1 is a partially broken perspective view showing an embodiment of a nipper device with an indexing mechanism according to the present invention.

FIG. 2 is a longitudinal sectional view of the embodiment.

FIG. 3 is an explanatory diagram of an operation of cutting a wire by a nipper.

4A and 4B show a nipper driven to be opened and closed by a cylinder via cam means, and FIG. 4A is a schematic perspective view of a conventional example,
(B) is a schematic perspective view in one example of the present invention.

[Explanation of symbols]

11 ... nipper, 11 d ... support shaft, 13 ... cylinder, 14 ...
Conical cylindrical cam, 15: outer cylindrical main body, 16: nipper holding inner cylinder, 18: indexing board, 20: ball plunger.

Claims (7)

(57) [Claims] An inner cylinder is rotatably fitted to an outer cylindrical main body, and means is provided for providing a moderation to the rotation of the inner cylinder. With an indexing mechanism, wherein a shaft is attached and the nipper is rotated together with the inner cylinder, and the nipper is driven by a cylinder to be opened and closed. Nipper device. 2. A cylinder for driving the nipper, wherein a conical cylindrical cam is fixed to a distal end portion of a piston rod, and a front end of a pair of handles of the nipper is opposed to a large-diameter opening end of the conical cylinder. The nipper device with an indexing mechanism according to claim 1, wherein is disposed. 3. The means for providing moderation to the rotation of the inner cylinder,
An indexing disc fixed to the inner cylinder, a plurality of indexing grooves formed in the indexing disc, and a ball plunger provided in the outer cylindrical main body. The nipper device with an indexing mechanism according to claim 1. 4. The nipper device with an indexing mechanism according to claim 3, wherein the indexing plate has an annular shape and is detachably fitted to the inner cylinder so as to be detachable and replaceable. 5. The inner cylinder has an engaging portion capable of connecting / disconnecting an external drive mechanism, and has a structure which can be rotated with respect to the outer cylindrical body by the external drive mechanism. The nipper device with an indexing mechanism according to claim 1, characterized in that: 6. The engagement portion is provided on a short cylindrical member externally fitted to the inner cylinder, and one end face of the short cylindrical member is engaged with a ball plunger to rotate. Index grooves for imparting moderation to the movement are arranged in the circumferential direction, and irregularities for engaging with an external drive mechanism are formed in the other end surface of the short cylindrical member in the circumferential direction. The nipper device with an indexing mechanism according to claim 5, wherein 7. The nipper has a structure in which a pair of rod members formed integrally with a blade portion and a handle are pivotally mounted on a single support shaft so as to be openable and closable. It is longer than the length required to support the pair of rod members, and is fitted in a hole formed in the inner cylinder so as to be insertable and removable. When the shaft is pulled out, the nipper is attached and detached from the inner cylinder. 2. The nipper device with an indexing mechanism according to claim 1, wherein the nipper device can be replaced.