JP2914976B2 - Wire cutting method in winding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to winding a wire around an armature core by a winding machine while sequentially winding the wire while connecting the wire to a tongue of a commutator of the armature core. The present invention relates to a method of cutting the winding start end and winding end of the wire near the tongue when the wire is drawn.

(Prior Art) Conventionally, when a wire is wound on an armature core provided with a commutator tongue by a winding machine, the wire is connected to each tongue to form a winding. At the beginning and end of the winding, a step of cutting the wire located between the wire grip and the tongue of the commutator of the armature core for winding the wire around the tongue is necessary. Or a method of cutting by rotating an armature core.

(Problems to be Solved by the Invention) However, in the conventional cutting method using scissors, although the scissors can advance to the vicinity of the tongue and cut, the uncut end of the wire necessarily occurs. The uncut end contacts the adjacent tongue to cause a short circuit, and in the method of cutting by rotating the armature core, the cutting operation lacks smoothness and the cutting position is not determined, The same drawbacks as above remained.

In view of the above, the present invention provides a method for cutting a wire in a winding machine which can surely cut the winding start and end of the wire at a tongue portion and shorten the uncut end as much as possible to eliminate the cause of short circuit. It is intended to provide a method.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides:
An armature core having a tongue of a commutator to be wound is supported intermittently rotatable around its axis, and the flyer is rotated by a flyer that rotates so as to draw a locus whose radial direction is the axial direction of the armature core. When winding a wire on a supported armature core, a wire gripper grips a leading end of a wire to be wound supplied from a wire supply source extending from the flyer and rectifies the wire to be wound. The wire gripper and the tongue in a state where the wire gripper and the tongue are wound around the child tongue and the wire end extending from the flyer at the end of the winding between the wire gripper and the tongue when the winding is completed is held by the wire gripper In the method of cutting a wire in a winding machine that cuts a winding end portion of a wire between the wire gripper and the tongue at the winding start end and the winding end portion, respectively. Wire shearing forces to the edge portion of the tongue is intended to subject matter that was allowed imparting operation tension to act against the ear.

(Operation) The wire located between the wire gripper at the winding start end and the winding end and the tongue of the commutator of the armature core is subjected to a pulling operation so that a wire shearing force acts on the edge of the tongue. At the very least, the wire is cut.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

First, a schematic configuration of a winding machine used in the method of the present embodiment will be described. In FIG. 1, reference numeral 1 denotes a first chuck means in the winding machine, which is arranged horizontally with respect to a frame (not shown) of the winding machine. An armature core A having a commutator tongue to be wound is disposed on the commutator side of the armature core A, and a shaft portion thereof is inserted.
For example, it has a collet-shaped chuck (not shown) so as to grip A1 and is intermittently rotatable around its axis at a predetermined pitch (set by the number of tongues). It is configured to be movable.

A pair of left and right second chuck means 2 and 2 are provided on the left and right of a frame (not shown) of the winding machine through a support cylinder 3, 3 described later with respect to a frame of the winding machine (not shown). 1
The armature core A gripped by the chuck means 1 is provided so as to be able to advance and retreat in a direction perpendicular to the axial direction, and arcuate recesses 2a, 2a are provided at substantially the center of the opposing surface of the armature A. The armature core A is formed so as to be aligned with the central axis of the chuck means 1 in the recesses 2a, 2a, leaving the portions (two pairs of spaced core slots) where the armature core A is to be wound up and down. It is configured to be clamped from both sides along the axial direction.

Support cylinders 3, 3 are integrally supported rotatably with respect to the center of the second chuck 2 in a direction orthogonal to the first chuck means 1, and a flyer is mounted on the support cylinders 3, 3. Arms 4, 4 are attached to the outside of the second chuck means 2, 2 so as to protrude, and pulleys 5, 5 are rotatably supported at the distal ends of the fryer arms 4, 4, respectively. In addition, the support cylinder 3,3
An opening is formed in the vicinity of the attachment portion of the flyer arms 4, 4 in which the guide pulleys 6, 6 are rotatably supported. Then, both flyer arms 4,4
Are rotated relative to each other such that the pulleys 5, 5 are drawn around the outside of the second chuck means 2, 2 and rotate along the axis of the armature core A with the rotation of the support cylinders 3, 3. The wire W wound around the armature core A is introduced into the support cylinders 3,3 from the supply source and guided from the support cylinders 3,3 by the guide pulleys 6,6. Through the pulleys 5, 5 of the outer flyer arms 4, 4, respectively.

The wire grippers 7, 7 advance and retreat along the axial direction of the armature core A on the commutator side of the armature core A with respect to a frame (not shown) of the winding machine, and advance and retreat in a direction orthogonal to the axial direction. The wire W is provided so as to be capable of being wound and connected to the tongue t of the commutator of the armature core A to be wound by extending from the pulleys 5, 5 of the flyer arms 4, 4. It opposes so as to be able to protrude and retract on the locus, and grips the winding start end of the wire W wound around the armature core A. That is, at the end of the winding, the wire grippers 7, 7 move the wire W extended from the pulleys 5, 5 of the flyer arms 4, 4 by the advance along the axial direction of the armature core A and the advance in the direction orthogonal to the coaxial direction. At the end of winding (starting end of the winding), and when cutting the winding start and end of the winding, and at the time of winding work, the wire W
The armature core A is configured to be retracted in a direction perpendicular to the axial direction of the armature core A and along the axial direction of the armature core A and to stand by at that position while holding the armature.

The cutting means 8, 8 are inclined with respect to a frame (not shown) of the winding machine so as to be able to move forward and backward from a side perpendicular to the axial end of the armature core A toward the commutator side of the armature core A. The hydraulic cylinder 9 includes a hydraulic cylinder 9 as a driving source, and a hook member 10 attached to a tip of a rod 9a of the hydraulic cylinder 9. The hook member 10 is used when the rod 9a moves forward. Wire W extending from pulley 5,5 of 4,4
The wire W wound and connected to the tongue t of the commutator of the armature core A at the winding start end (winding end) of the armature A and hooked by the wire grippers 7, 7 is hooked in the vicinity of the tongue t. It is configured to pull the hooked wire W at an acute angle to the tongue t. The hook portion of the hook member 10 with the wire W is formed into a curved and smooth finished surface in order to minimize the resistance to the wire W.

Next, the method of the present embodiment will be described with the winding machine configured as described above.

Now, the wire W wound before the winding to the armature core A is introduced into the support cylinders 3 from the supply source, and
From inside 3,3 via guide pulleys 6,6, outer flyer arm 4,
4 are respectively guided to reach the pulleys 5, 5 and the ends (also referred to as winding ends or winding start ends) extending from the pulleys 5, 5 are gripped by the wire grippers 7, 7, and the wire grippers 7, 7 are also held. Are waiting at a predetermined position. (See FIG. 1 and FIG. 2.) Therefore, the armature core A having the tongue t of the commutator to be wound is supplied to the check unit of the winding machine,
Of the armature core A supplied, the commutator side of the supplied armature core A is fitted, the shaft portion A1 is gripped by the first chuck means 1, and the second chuck means 2, 2 is advanced in the direction perpendicular to the axial direction of the armature core A, and the recesses 2a, 2a leave the portions of the armature core A to be wound (two pairs of spaced core slots) in the axial side surface. Between both sides.

An initial operation is performed to rotate the flyer arms 4, 4, and the wire W is wound and connected to the tongue t at the beginning of winding, and an initial winding is performed on a predetermined portion of the armature core A where winding is to be performed. That is, the operation of hooking the wire on the tongue (winding connection) prior to the winding operation is a known operation in a winding machine that winds the wire around the armature core by rotating this type of flyer, For example, the first
The chuck means 1 is slightly retracted in the axial direction to expose the portion of the tongue t, and one end of the tongue t is gripped by the wire grippers 7, 7 by the reverse rotation of the flyer arms 4, 4 as described above. The wire W is instantaneously wound and connected. Then, the first chuck means 1 is slightly advanced in the axial direction, and the tongue T wound and connected to the wire W is covered as shown in FIG. Thus, the initial winding is performed on a predetermined portion of the armature core A to be wound by the forward rotation of the flyer arms 4,4. At this time, the winding start end of the wire W is gripped by the wire grippers 7, 7, and the wire W1 corresponding to the winding start end is stretched between the wire grippers 7, 7 and the tongue t. (See FIG. 2 and FIG. 3.) Then, at the end of the above operation, the rod 9a of the fluid pressure cylinder 9 in the cutting means 8 is advanced, and the hook member 10 at the tip is connected between the wire grippers 7, 7 and the tongue t. A wire W1 corresponding to the winding start end stretched therebetween is hooked near the tongue t. (See FIG. 5) Then, the rod 9a is retracted to pull the hooked wire W1 at an acute angle to the tongue t. Due to this pulling operation, a shearing force acts on the wire W1 located at the edge of the tongue t, and this shearing force causes the wire W1 to move.
W1 is cut at the edge of the tongue t (see phantom lines in FIGS. 6, 8, and 2). In this case, a shearing force also acts on the wire W1 at the gripping portions of the wire grippers 7, 7 and the hooking portion of the hook member 10, and these shearing forces are much more than the shearing forces acting on the edge portion of the tongue t. It is set to be a small value.

When the cutting operation is completed, the flyer arms 4, 4 are wound around the outside of the second chuck means 2, 2 for the winding operation so as to draw a locus whose radius is in the axial direction of the armature core A. The armature core A is rotated in the same direction to perform a series of windings on a portion of the armature core A to be wound. (See FIG. 4.) In this case, the wire W to be wound is supplied from the supply source to the support tube 3,
3 and are fed out of the support cylinders 3 and 3 through the guide pulleys 6 and 6 to the pulleys 5 and 5 of the outer flyer arms 4 and 4, respectively.

Next, when the winding is completed, the second chuck means 2,
The armature core A is once released by the first chuck means, and the armature core A is intermittently rotated by a predetermined pitch, and the armature core A is again held by the second chuck means 2, 2 as described above. I do.

Next, the flyer arms 4, 4 are rotated for the winding operation as described above, and a series of windings are performed on the portion of the armature core A to be wound. The above operation is repeated every predetermined pitch intermittent rotation by the first chuck means to perform a continuous winding operation. W is connected to the tongue t as a lead wire. (See FIG. 8.) Then, when all the parts to be wound around the armature core A are wound, the wire W from the pulleys 5, 5 of the flyer arms 4, 4 is wound around the last tongue t. It is in a state of being connected by turns. Therefore, the wire grippers 7, 7 are advanced along the axial direction of the wound armature core A along with the end of the winding, and advanced in the direction orthogonal to the coaxial direction, to move the flyer arms 4, 4. The wire W1 corresponding to the winding end of the wire W extended from the pulleys 5, 5 is gripped, and waits again at the initial position.

Next, as described above, the rod 9a of the fluid pressure cylinder 9 in the cutting means 8 is advanced to move the hook member 10 at the distal end to a wire corresponding to the winding end stretched between the wire grippers 7, 7 and the tongue t. W1 is hooked near the tongue t (see FIG. 5), the rod 9a is retracted, and the hooked wire W1 is pulled at an acute angle to the tongue t,
This pulling action causes a shearing force to act on the wire W1 located at the edge of the tongue t, and the wire W1 is cut at the edge of the tongue t by this shearing force (see FIGS. 6 and 8). In this manner, the wire W1 corresponding to the winding start end and the winding end in the winding operation on the armature core A is cut, and the cutting is performed by the tongue of the commutator of the armature core A by the pulling operation on the wire W1. Since the process is performed using the edge of t, the uncut end portion is made as short as possible.

(Effects of the Invention) As described above, according to the present invention, the wire located between the wire gripper at the winding start end and the winding end and the tongue of the commutator of the armature core is placed at the edge of the wire with respect to the tongue. By applying a pulling action to apply a shearing force and cutting the wire at an edge portion of the tongue, the winding start end and the winding end of the wire can be easily cut at the tongue portion, and the uncut end portion thereof can be cut. Can be made as short as possible. This prevents defects caused by short-circuiting of the uncut end of the wire at the tongue, and in particular,
The effect is remarkably exhibited in the armature core winding having a large number of tongues.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a perspective view schematically showing an outline of a winding machine, FIG. 2 is a side view schematically showing a gripping state of a wire gripper, and FIG. Fig. 4 is a front view schematically showing a winding state by a flyer arm, Figs. 5 and 6 are front views schematically showing a cutting state of a wire, Fig. 7 is a perspective view schematically showing a cutting means, FIG. 8 is an enlarged explanatory view of the wire connected to the tongue. DESCRIPTION OF SYMBOLS 1 ... 1st chuck | zipper means 2 ... 1st chuck | zipper means 4 ... Flyer arm 7 ... Wire gripper 8 ... Cutting means A ... Armature core t ... Tongue W ... Wire

Claims (1)

(57) [Claims] An armature core provided with a tongue of a commutator to be wound is supported so as to be intermittently rotatable around its axis, so as to draw a locus whose radial direction is the axial direction of the armature core. In winding a wire on the armature core supported by the rotating flyer, a wire gripper grips a drawing start end of a wire to be wound supplied from a wire supply extending from the flyer and The wire gripper with the wire gripper gripping the wire starter end between the wire gripper and the tongue wound around the tongue of the commutator to be wound and the wire end extending from the flyer as the winding ends. In a wire cutting method in a winding machine for cutting a winding end portion of a wire between a wire gripper and a tongue, respectively, a wire gripper and a tag at the winding start end and the winding end portion are provided. Wire cutting method in the winding machine, characterized in that the wire shearing forces to the edge portion of the tongue is allowed to impart operation tension to act against the wire between the grayed.