JPH071787Y2 - Winding machine nozzle device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a nozzle device for guiding a wire rod of a winding machine.

(Prior Art) In a winding machine, a nozzle that guides a wire rod from a winding frame is attached to an arm that is movable in the front-back, left-right, and up-down directions.
It is known that a wire is wound around a coil bobbin attached to a spindle and a wire is twisted around a terminal pin of the coil bobbin by moving a nozzle.

By the way, when the terminal pin is in the axial direction with respect to the winding direction of the coil bobbin, it is necessary to turn the nozzle 90 ° when performing the twisting operation. Therefore, as shown in FIGS. 6 and 7, A rotary shaft 2 that is rotated by an actuator (not shown) is attached to the tip of an arm 1 that is movable in three axial directions, and the tip of the nozzle 3 is attached to the nozzle 3 via the rotary shaft 2. It has been proposed that the nozzle 3 can be swung by being mounted so as to be located on the axis center line.

The figure is applied to a multi-axis winding machine. In this case, a pair of arms 1 to which a rotating shaft 2 is attached are provided on the left and right, and a nozzle bar 4 having a predetermined length is eccentric to both rotating shafts 2. A plurality of nozzles 3 are mounted on the nozzle bar 4 at predetermined intervals (see Japanese Patent Application No. 62-73990).

(Problems to be Solved by the Invention) In the above device, since the nozzle 3 is swung around the tip of the nozzle 3, the position control of the nozzle 3 becomes easy before and after the swivel. However, in the above device, since the tip of the arm 1 is always protruding forward and downward from the tip of the nozzle 3 due to the structure, the tip of the arm 1 is wound during winding work or movement. There is a risk of contact with wire clamps, wire cutters, etc. arranged around the spindle of the machine, and therefore the nozzle 3 must be operated to avoid this. Therefore, since the operation of the nozzle 3 is limited, there is a problem that working efficiency is lowered and it is not possible to cope with complicated winding.

The present invention aims to provide a nozzle device that solves such problems.

(Means for Solving the Problem) The present invention relates to a nozzle device for a winding machine, in which a nozzle that guides a wire rod is attached to an arm that is movable in the front-back, left-right, and up-down directions to wind and twist the wire rod, A parallel crank is formed at the tip of the arm by two rotating links and a connecting link, and the nozzle is attached through an extension of the connecting link and a parallel link connected to one rotating link, and An actuator for driving the parallel crank is provided.

(Operation) Therefore, since the nozzle is attached through the extension of the connecting link of the parallel crank formed on the arm and the parallel link connected to one of the rotating links, the arm and each link are mounted on the nozzle more than the tip of the nozzle. There is no protrusion, and by rotating the parallel crank, the nozzle swivels around the tip of the nozzle.

(Embodiment) FIGS. 1 to 3 show an embodiment of the present invention, in which a base portion 11 is attached to a drive mechanism (not shown) such as a robot device, and three-axis directions of front and rear, left and right, and up and down are provided. It is a movable arm.

And, at the tip of the arm 10, two rotary links 12 and 1 are arranged in tandem.
3 is connected via pins 14 and 15, and the rotation links 12 and 13
A parallel crank 19 is formed by a connecting link 18 that connects the two via pins 16 and 17.

Connecting link 18 of parallel crank 19 and one rotating link 13
Is extended in an X shape with the pin 17 as an intersection, and the extension 18a of the connecting link 18 is extended to the tip of the extension 13a of the rotary link 13.
A parallel link 20 of the same length as is connected via a pin 21.

Then, the tip of the parallel link 20 and the extension 18 of the connecting link 18
a Link to parallel link 20 via pins 22 and 23 at the tip
The extension 18a of 18 and the extension 13a of the rotary link 13 further form a second parallel crank 24 so that the base plate 25
Is attached.

A nozzle holder 26 is attached to a side surface of the base plate 25, and a nozzle body 28 in which a pipe-shaped nozzle 27 for guiding a wire is attached is attached to the nozzle holder 26. In this case, the nozzle body 28 is detachably formed on the nozzle holder 26 via a clamp mechanism (not shown), and the tip of the nozzle 27 connects the line A passing through the pins 14 and 15 and the line B connecting the pins 22 and 23. It is installed so that it is located on the intersection C with.

On the other hand, the rotary link 13 is also extended to the opposite side of the parallel crank 19, and a clevis-type air cylinder 29 is installed as an actuator between the tip 13b of the rotary link 13 and the base 11 of the arm 10. The air cylinder 29 receives a predetermined pressure air from a pressure air source (not shown) through a control valve,
30 contracts to the illustrated state. A double-acting type air cylinder 29 may be used, and in this case, the rod 30 is selectively expanded and contracted by switching the supply direction of the compressed air via the control valve.

Further, between the connecting link 18 and the base 11 of the arm 10,
A tension spring 31 that pulls the parallel link 19 upward in the drawing with a predetermined spring force is spanned.

With this structure, the wire rod unwound from the winding frame is wound around the coil bobbin 33 attached to the spindle 32 of the winding machine shown in FIG. 5 through the nozzle 27 of the nozzle body 28 shown in FIG. When the terminal pin 34 in the axial direction after the wire is twisted with respect to the winding direction, compressed air is supplied to the air cylinder 29 in the state shown in FIG. Note that FIG. 4 shows an initial state in which the rod 30 of the air cylinder 29 is at the most extended position and the nozzle 27 faces the front of the arm 10.

When compressed air is supplied to the air cylinder 29, the rod
By the contraction of 30, the parallel crank 19 rotates in the direction of the arrow D via the rotary link 13 with the pin 15 as the center of rotation, and at the same time, the second parallel crank 24 via the rotary link 13 and the connecting link 18. Is in the direction of arrow E, that is, the second parallel crank 24
Rotates about an intersection C between a line A passing through the pins 14 and 15 and a line B passing through the pins 22 and 23 (see FIGS. 1 and 3). The nozzle 27, the tip of which is located at, rotates about the tip.

As a result, the nozzle 27 is centered around the tip from the state of FIG.
Switch to the state shown in Fig. 3 after turning 90 °. The nozzle
The turning angle of 27 is set by the stroke of the air cylinder 29.

Then, in the state shown in FIG. 3, the terminal pin 34 in the axial direction is
In this state, the tip of the arm 10 and each of the links 12, 13,
The nozzles 18, 20 never project further than the tip of the nozzle 27.

Therefore, the position of the nozzle 27 can be easily controlled before and after the turning, and the arm 10 or the like does not hinder the surrounding wire clamp or the like during the winding work or the movement of the nozzle 27. A high degree of freedom in operation is obtained, work efficiency is improved, and complicated winding can be easily performed.

When the nozzle 27 is returned from the state shown in FIG. 3 to the state shown in FIG. 4, if the compressed air to the air cylinder 29 is released, the spring force of the tension spring 31 causes the nozzle 27 to move 90 ° along with the parallel cranks 19, 24. Turn to the original state.

Further, this embodiment shows an example in which one nozzle 27 is attached to the arm 10. However, when a plurality of nozzles are arranged to be applied to a multi-axis winding machine, the arms are provided in parallel. (Parallel cranks attached to each arm and the base plate have different left and right hand sides). A nozzle bar may be provided between the base plates, and nozzles may be attached to the nozzle bar at predetermined intervals.

(Effect of the Invention) As described above, according to the present invention, a nozzle device for a wire winding machine that winds and twists a wire rod by mounting a nozzle that guides the wire rod on an arm that can move in the front-back, left-right, and up-down directions. At the tip of the arm, a parallel crank is formed by two rotating links and a connecting link, and the nozzle is mounted through an extension of the connecting link and a parallel link connecting to one rotating link. Since the actuator for driving the parallel crank is provided, the nozzle can be swung without the arm side projecting forward from the tip of the nozzle, and a high degree of freedom of nozzle operation is ensured, and work efficiency is greatly improved. It can also handle complicated windings.

[Brief description of drawings]

1 to 3 are a left side view, a front view and a right side view showing an embodiment of the present invention, and FIG. 4 is a right side view showing an initial state.
The drawing is a side view of the coil bobbin, and FIGS. 6 and 7 are a partial front view and a side view of a conventional example. 10 …… Arm, 12, 13 …… Rotating link, 18 …… Connecting link, 20 …… Parallel link, 27 …… Nozzle, 28 …… Nozzle body, 29 …… Air cylinder.

Claims (1)

[Scope of utility model registration request] 1. A nozzle device for a winding machine, wherein a nozzle for guiding a wire rod is mounted on an arm that is movable in the front-back, left-right and up-down directions to wind and twist the wire rod. A parallel crank is formed by a moving link and a connecting link, and the nozzle is mounted through an extension of the connecting link and a parallel link connected to one of the rotating links, and an actuator for driving the parallel crank is provided. A nozzle device for a winding machine characterized in that