JPH0811039Y2 - Winding machine work holder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a motor core winding machine, and more particularly to a work holder for a motor core winding machine having a winding groove formed in the inner circumference thereof.

[Prior Art] Conventionally, a winding machine that manufactures a stator or a rotor by winding a coil in a winding groove provided inside a motor core,
As shown in FIG. 4, a work holder H having a recess fitted to the outer diameter of the core C is provided, and the upper surface of the core is clamped with a screw or the like via a pusher K to hold the core C and press the pusher. K
Is provided with a fixing pin P for temporarily fixing a part of the coil so that the core can be rotated about the center of the core while the core C is gripped. This work holder H was prepared in accordance with the core diameter and stacking thickness required, and only the type of core was prepared. When changing the type of core, the work holder was replaced with a suitable work holder each time the winding work was set up.

[Problems to be solved by the invention] By the way, when the number of types of motors increases and more and more types of windings are performed by one winding machine, the setup time ratio of the work holder increases and the efficiency decreases. There was a drawback to do.

An object of the present invention is to improve the efficiency of winding work by enabling quick setup change.

[Means for Solving the Problems] The present invention provides a work holder for a winding machine, which holds a core provided with a winding groove on the inner periphery thereof and a fixing pin for temporarily fixing a part of the coil provided on the upper surface. A plurality of grip claws radially arranged and gripping the core with a grip surface facing the center, fixing pins provided on the side surfaces of the grip claw, a face plate for sliding the grip claw, and a shaft of the face plate. Part is supported via a bearing, and an involute ring having an involute groove on a surface facing the face plate is fixed to the grip claw,
And a cam follower that meshes with the involute groove,
The worm wheel includes a worm wheel concentrically fixed to the involute ring, a worm holder fixed to a shaft portion of the face plate, and a worm rotatably supported by the worm holder and meshing with the worm wheel. By doing so, the work holder of the winding machine is characterized in that the plurality of gripping pawls are simultaneously moved in the radial direction by the same length, and the chucks are locked when stopped.

[Operation] Since the gripping claw can be moved in the radial direction to the desired outer diameter size at the same time as the fixing pin for temporarily fixing a part of the coil, and at the same time by the same length, the work holder The setup work is extremely easy. Further, since the involute wheel is driven by the worm gear mechanism, the grip claws are locked at the position where the core is gripped, and the core can be gripped reliably.

 The present invention will be described with reference to the embodiments shown in the drawings.

FIG. 1 is a plan view of an embodiment of the present invention, and FIG. 2 is a side sectional view of the embodiment of the present invention.
The individual gripping claws 2 and the positioning claws 2'are guided and movable in a radial direction, and the gripping surface facing the center of the gripping claw 2 is formed in a substantially arc shape, and the side surface corresponding to the upper surface is formed. A fixing pin 22 for fixing a part of the crossover is fixed. A worm holder 14 is attached to the hollow shaft 13 of the face plate 11.
Is fixed and rotatably supports the worm 3. An involute ring 4 is rotatably provided on the shaft portion 13 via bearings 15 that support loads in both the thrust direction and the radial direction, and an involute groove 41 is provided on the surface facing the face plate 11, and A cam follower 23 fixed to the grip claw 2 is meshed. A worm wheel 5 that meshes with the worm 3 is fixed to the involute ring 4, and the involute ring 4 is rotated by rotating the worm 3, and the six gripping claws 2 that have the same length at the same time through the cam follower 23 that meshes with the involute groove 41. It is designed to be moved radially. Further, a bearing 16 is provided on the shaft portion 13, and the entire chuck 1 is rotatably supported by a chuck support 6 which is provided so as to be vertically movable by a winding machine. Further shaft 13
A pulley 7 around which a belt 71 such as a timing belt that does not slip is wound around is fixed to the gripping claw 2, the worm 3, the involute ring 4, and the worm wheel 5 including a face plate 11 by a drive device (not shown) of the winding machine. Are designed to rotate together.

When winding a coil around the core C, the worm 3 is rotated to rotate the worm wheel 5 and the involute ring 4.
By rotating the cam follower 23 and the gripping surface 21 of the gripping claw 2
Is moved to a position slightly larger than the outer diameter of the core C, the core C is inserted into the space formed by the plurality of gripping surfaces 21, and the position of the winding groove T is positioned by the positioning claw 2 '. Is rotated to move the grip claw 2 to grip the core C. After that, as shown in FIG. 3, the nozzle N for drawing out the coil of the winding machine M is moved to wind and fix a part of the coil around the fixing pin 22, and the nozzle N is moved to the position of the winding groove T. Let Next, the chuck support 6 is raised to raise the core C.
Put the coil in the winding groove T of the nozzle N together with the nozzle N.
When is removed from the winding groove T, the core C is rotated by the drive device via the pulley 7, the shaft portion 13 and the grip claw 2 by the groove pitch. After that, the chuck support 6 is lowered to put the coil in the adjacent winding groove T together with the nozzle N, and when the nozzle N comes above the core C, the core C is reversely rotated to complete one winding. This operation is repeated as many times as necessary, and the winding groove T
Forming a coil on.

When winding a coil around different types of cores C, the worm 3 may be rotated to wind the coil according to the outer diameter of the desired core C of the grip claw 2.

[Effects of the Invention] As described above, according to the present invention, each time the core is changed to a different core, the worm can be rotated without changing the work holder to match the desired outer diameter of various cores. Since the position of the gripping claws can be changed so that they can be gripped, efficient winding work can be set up, and
Since the grip claws are locked at the position where the core is gripped, the core can be securely gripped.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, FIG. 2 is a side sectional view, FIG. 3 is an explanatory view during operation, and FIG. 4 is a side sectional view of a conventional example. 1 ... Chuck, 11 ... Face plate, 12 ... Guide, 13 ... Shaft part, 14 ...
Worm holder, 2 ... gripping claw, 22 ... fixing pin, 23 ... cam follower, 3 ... worm, 4 ... involute ring,
41 ... Involute groove, 5 ... Worm wheel, 6 ... Chuck support, 7 ... Pulley

Claims (2)

[Scope of utility model registration request] 1. A work holder of a winding machine, which holds a core having a winding groove on an inner circumference thereof, and is provided with a fixing pin for temporarily fixing a part of a coil, the work holder being arranged radially, and A plurality of grip claws for gripping the core with a grip surface facing the center, a fixing pin provided on a side surface of the grip claw, a face plate for sliding the grip claws, and a shaft portion of the face plate supported by bearings through bearings. , An involute ring provided with an involute groove on a surface facing the face plate, and fixed to the grip claw,
And a cam follower that meshes with the involute groove,
The worm wheel includes a worm wheel concentrically fixed to the involute ring, a worm holder fixed to a shaft portion of the face plate, and a worm rotatably supported by the worm holder and meshing with the worm wheel. By doing so, the work holder of the winding machine is characterized in that the plurality of gripping claws are simultaneously moved in the radial direction by the same length and are locked when stopped. 2. The work holder for a winding machine according to claim 1, wherein the chuck includes a positioning claw capable of moving in a radial direction together with the grip claw.