JPH0133560Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a speed increasing device at the start of winding in a spindle-driven yarn winding machine.

(Prior Art) Conventionally, a winding machine is driven by directly transmitting the rotation of an electric motor to a spindle, so that the winding speed becomes rapid as soon as the winding starts.

(Problems to be Solved by the Invention) As described above, since the winding speed increases immediately at the start of winding, thread breakage occurs, and the winding body slips, causing damage to the thread.

(Means for solving the problem) The present invention eliminates the above-mentioned conventional disadvantages and provides a friction transmission device between the electric motor and the spindle, and uses a spring to connect a stopper piece rotatably attached to the inner driven wheel. The contact piece provided on the stopper piece is pressed against the outer drive wheel provided concentrically with the inner driven wheel, and the outer drive wheel is connected to the shaft of the electric motor, and the inner driven wheel drives the spindle drive mechanism. It is characterized by being made to work together.

(Embodiment) In FIGS. 1 and 2, 1 is a spindle, 2 is a bobbin attached to the spindle, 3 is a traverse guide, and a grooved cam 5 in a cam box 4 is driven in the longitudinal direction of the spool. The traverse is operated to wind the thread a onto the bobbin 2.

The grooved cam 5 is driven by a timing belt 7 from an intermediate shaft 6, and is connected to the intermediate shaft 6 and the spindle 1.
is rotated by a timing belt 20 from a shaft 9 of an electric motor 8 via a friction starter 10 . The friction starting device has an electric motor 8 as shown in Fig. 3 and Fig. 4.
an outer drive wheel 11 fixed to the shaft 9 of the drive wheel 1;
1 and an inner driven wheel 12 provided concentrically,
The inner driven wheel 12 is rotatably provided with respect to the outer driving wheel 11 by means of bearings 13 and 14.

The driven wheel 12 is provided with a plurality of stop pieces 15 whose one end is rotatably attached to a shaft 16, and a spring 17 is applied to the stop pieces 15 so that the contact pieces 18 provided on the stop pieces 15 are connected to the outer drive wheel 11. A pulley 19 is attached to the shaft portion 12a that is pressed against the peripheral wall and is integral with the inner driven wheel 12, and the timing belt 20 is hung on the pulley 19, and the rotation of the inner driven wheel 12 is controlled via the belt 20 to the spindle 1 and the intermediate shaft. The grooved cam 5 is interlocked via the groove cam 6.

(Function) In the above-described device, the outer drive wheel 11 driven by the electric motor 8 rotates when the winding starts, but since a slip occurs between the drive wheel 11 and the contact piece 18 of the stopper piece 15 in the initial stage, the inner follower rotates. The driving wheel 12 gradually begins to rotate, and as it rotates, the stopper piece 1
Centrifugal force acts on the drive wheel 11, and the contact force of the contact piece 18 against the drive wheel 11 increases, the slip decreases and the rotational speed of the driven wheel 12 gradually increases, and the slip gradually disappears and the outer drive wheel 11 and the inner driven wheel 12 rotate together, and as a result, the winding speed of the spindle 1 reaches its maximum value.

(Effects of the invention) As described above, according to the invention, when starting winding or restarting the winding work, the rotation of the spindle is gradually changed from low speed at the initial stage to high speed, so even relatively weak threads can be cut. Moreover, there is no slip between the bobbin and the thread, so the thread is not damaged, and its structure is extremely simple and has the advantage of not causing any failures.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an example of a thread winding machine equipped with the device of the present invention, Fig. 2 is a side view of a part of it, Fig. 3 is a cutaway side view of the main part, and Fig. 4 is the same as Fig. 3. - line sectional view. 1...Spindle, 11...Outer drive wheel, 12
... Inner driven wheel, 15 ... Stopping piece, 17 ... Spring, 18 ... Contact piece.

Claims (1)

[Scope of utility model registration request] A stopper piece rotatably attached to the inner driven wheel is energized by a spring, and the contact piece provided on the stopper piece is pressed against the outer drive wheel provided concentrically with the inner follower wheel, thereby causing the outer drive wheel to move. A starting device for a winding machine, which is connected to the shaft of an electric motor and has an inner driven wheel that interlocks a spindle drive mechanism.