JPH0324638Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a bobbin mounting mechanism for a wire twisting machine, and more specifically, it applies a stable and uniform braking force to the bobbin when unwinding the wire from the bobbin. The present invention relates to a bobbin mounting mechanism for a wire twisting machine.

[Conventional technology and its problems]

A wire twisting machine, for example, a rigid type wire twisting machine, as shown in FIG. 4 rows), bobbin B
While rotating the cradle 1, the strands 10 are fed out from each bobbin B, converged through the batten C, and then twisted by the die D. It is wound up via E.

In this wire twisting machine, as shown in FIGS. 1 to 3, the bobbin B is mounted on a cradle 1, and a fixed cone 2 and a push cone 3 are mounted on the cradle 1.
are provided facing each other, and in a state where the push cone 3 is retracted from the fixed cone 2 (a state where the bobbin B can fit between both cones 2 and 3), the bobbin B is inserted between the cones 2 and 3 with its core tube It is positioned so as to be coaxial with the cones 2 and 3, and then the push cone 3 is advanced to fit and support both cones 2 and 3 into both ends of the core tube of the bobbin B. In this state, the bobbin B is rotated together with the cones 2 and 3 to let out the strand 10.

This unwinding of the strands 10 is done by the winding force of the stranded wire, but when the bobbin B rotates freely, the strands 10 are unnecessarily unwound by the inertia force, and each converged element is unwound. Looseness occurs in the wire 10, that is, a difference occurs in the tension of each strand 10, and the wires are not twisted uniformly. For this reason, it is necessary to apply a required braking force (brake) to the bobbin B so that the wire 10 is always fed out with the required tension, and conventionally, the braking means is configured as shown in FIG. are doing.

That is, the gear 5 is fitted onto the shaft 4 of the fixed cone 2 through the key and its groove 20, and this gear 5 is meshed with the pinion 8 of the output shaft of the torque motor 6 through the intermediate gear 9. Attach the clip pin P that protrudes from gear 5 so that it can be retracted from the bobbin B.
It is constructed so that it can be fitted into the flange hole H of.

This brake means supports the bobbin B between both cones 2 and 3 by advancing the push cone 3, and also moves the clip pin P to the flange hole H as shown in the figure.
The bobbin B and the gear 5 are fitted into one body, and the torque motor 6 applies a braking force to the rotational force of the bobbin B, thereby applying a required tension to the strand 10 to be paid out.

Nowadays, the general trend of production machines is that they are becoming larger and faster in order to improve their productivity. For this reason, this type of wire twisting machine is no exception, and speeds are increasing.

As the speed increases, in the conventional braking means, the clip pin P is pushed out by the spring S and fitted into the flange hole H.
When the cradle 1 rotates at a high speed, the resulting centrifugal force may cause the lining pin P to pull in against the spring S, causing the lining pin P to move into the hole H.
When it comes out, the edge of gear 5 and bobbin B is cut and no braking force is applied to bobbin B.
Since the required tension is not applied to the wires, the twisted wires cannot be twisted smoothly, and the twisted wires become defective.

In addition, if the keripin P is not fully inserted (the keripin P fits in and out of the hole H), the keripin P will be hit sideways by the periphery of the hole H of the bobbin B, and this will be repeated. This will lead to damage to the periphery of the flange hole H of the bobbin B and the flange hole H, resulting in a poor smooth fit between the flange hole H of the bobbin B and the flange hole H, making it difficult to obtain a normal braking function, leading to product defects.

[Purpose of invention]

In view of the above points, it is an object of the present invention to provide a bobbin mounting mechanism for a wire twisting machine that has a braking means that is not affected by the centrifugal force generated during high-speed operation of a large wire twisting machine.

[Means to achieve the purpose]

In order to achieve the above object, in the present invention, a push cone and a fixed cone are provided facing each other in the cradle of a wire twisting machine, the push cone is moved forward and backward with respect to the fixed cone, and a bobbin is installed between both cones. Stack,
In the well-known mechanism that applies a predetermined braking force to the bobbin by a brake means provided on the cradle to unwind the strand, a brake pad is interposed between the fixed cone and the bobbin so that both are in pressure contact with each other, and a brake part is provided between the fixed cone and the bobbin. The brake means is connected.

[Effect]

In the bobbin mounting mechanism configured in this way, when the push cone is advanced and the bobbin is mounted between both cones, the bobbin is pressed into contact with the fixed cone via the brake pad by the propulsion force, and becomes integral with the fixed cone. . Therefore, when the wire is paid out from the bobbin, the bobbin rotates, but the rotational force is transmitted to the fixed cone via the brake pad, and the braking force is applied to the bobbin by the brake means connected to this cone. is applied, and the wire is let out with the required tension.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings FIGS. 1 and 2. Note that the same reference numerals as above indicate the same items.

In the figure, 18 is a cage of a rigid type wire twisting machine, and a cradle 1 is provided so that a total of 12 bobbins, 4 bobbins B each in three equal parts in the circumferential direction, can be mounted. , a push cone 3 and a fixed cone 2 are provided facing each other, a gear 5 is fitted onto the fixed cone shaft 4 via a key and a key groove 20, and the gear 5 is connected to a cam clutch shaft 11 attached to the cradle 1. intermediate gear 9 fitted into
Torque motor 6 attached to cradle 1 via
The output shaft 7 is engaged with a pinion 8 fitted through a key and a key groove 21.

As shown in FIG. 2, a line shaft 22 is installed in the cage 18 along each pushing cone 3.
At the left end of this shaft 22, a transmission shaft 22' from a drive unit such as a motor M moves forward and backward (left and right in the figure).
This causes the transmission shaft 22' to be fitted and removed.
The shaft 22 is rotated forward and backward by a drive source (not shown). This shaft 22 has a gear 23
are appropriately arranged and fitted, and forward and reverse rotation of the shaft 22 is transmitted to the drive shaft 25 via the gear 23 and the driven gear 24. The drive shaft 25 is connected to the push cone 3 via a worm gear 26, and as the drive shaft 25 rotates, the push cone 3 moves forward and backward via the worm gear 26, causing a gap between both cones 2 and 3. Attach and detach bobbin B.

A flange 13 is fixed to a portion of the fixed cone 2 facing the bobbin shaft hole 27 via a key/key groove 28, and an annular brake pad 14b is fixed to the surface of the flange 13 facing the bobbin collar 14. , as the pushing cone 3 moves forward, the bobbin collar 14 and the annular flange 1 are pressed together via the brake pad 14b.
3 are pressed together and integrated. It is preferable that the braking force (frictional force) of the brake pad 14b due to this pressure contact be greater than the braking force applied to the bobbin B by the torque motor 6, which will be described later.

A blade 1 is attached to the center shaft 15 of the cam clutch shaft 11.
6 is fixedly installed, and a limit switch 17 is provided in the rotation range of this blade 16. This central axis 15
, only the rotational force in the direction opposite to the wire feeding direction, that is, the rotational force in the braking direction (rotation direction) of the torque motor 6, is transmitted, and the winding force disappears when the wire 10 is broken. When the bobbin B is reversed by the rotational force of the torque motor 6, the center shaft 15 also rotates, the blades 16 rotate, and the limit switch 17 is rotated.
Tap to stop the stranding machine.

This embodiment is constructed as described above, and when bobbin B is inserted with the space between both cones 2 and 3 opened and bobbin B is inserted between both cones 2 and 3, the push cone 3 is advanced and bobbin B is mounted between both cones 2 and 3. Due to the forward force, the bobbin B is pressed against the flange 13 of the fixed cone 2 through the brake pad 14b and becomes integral with the flange 13 of the fixed cone 2. For this reason,
When the strand 10 is paid out from the bobbin B, the bobbin B
rotates, but the rotational force is due to the brake pad 14
b, is transmitted to the torque motor 6 via the gear 5, etc., and since the torque motor 6 is given a rotational force in the opposite direction to the rotational force, the rotational force acts as a braking force on the bobbin B. That is, a braking force is applied to the bobbin B, and the wire 10 is paid out with a required tension.

During this brake action, even if the unwinding speed of the wire 10 is high, that is, the rotation of the cage 18 is high, the centrifugal force does not affect the pressing force of the collar 14 and flange 13 of the bobbin B to the brake pad 14b. Therefore, the braking force of the torque motor 6 is reliably transmitted to the bobbin B via the brake pad 14b, and the required tension is always applied to the wire 10.

Further, when the wire 10 to be fed out is broken, the blade 16 is rotated by the torque motor 6 and the limit switch 17 is activated to stop the wire twisting machine, instruct the wire to break, and prompt the work to connect the wire 10.

[Effect of idea]

As explained above, according to the present invention, the braking force is transmitted by the brake pads, which solves various problems caused by centrifugal force in the conventional case where the bobbin and the brake mechanism are engaged with the clip pin. A uniform and stable braking force is applied to the bobbin.

Therefore, according to the present invention, even in high-speed work, it is possible to reliably obtain a high-quality stranded wire with stable twisting.

[Brief explanation of drawings]

Fig. 1 is an enlarged view of essential parts of an embodiment of a bobbin mounting mechanism according to the present invention, Fig. 2 is a layout diagram of a wire twisting machine according to the present invention, and Fig. 3 is an example of a conventional bobbin mounting mechanism. It is a diagram. 1...Cradle, 2...Fixed cone, 3...
Push cone, 4... Fixed cone shaft, 5... Gear, 6... Torque motor, 7... Output shaft, 8...
Pinion, 9... Intermediate gear, 10... Element wire, 1
1...Cam clutch shaft, S...Spring, 13
...Flange, 14b...Brake part, 15
...Cam clutch center shaft, 14...Bobbin tsuba, 16
...Feather, 17... Limit switch, 18...
cage, 20...key/keyway, 21...key/
Keyway, 22... Line shaft, 23... Gear, 24... Driven gear, 25... Drive shaft, 26
... Worm gear, 27 ... Bobbin shaft hole, 28
...Key/keyway, P...Kelipin, B...Bobbin, H...Flange hole, M...Motor, C...Die board, D...Dice, E...Capstan.

Claims (1)

[Scope of utility model registration request] A push cone and a fixed cone are provided facing each other in the cradle of the wire twisting machine, and a bobbin is mounted between the two cones by moving the push cone back and forth with respect to the fixed cone, and a braking means provided on the cradle is used to set the bobbin at a predetermined level. A wire twisting machine characterized in that, in the mechanism for applying a braking force to unwind the strands, a brake part is interposed between the fixed cone and the bobbin so that both are in pressure contact with each other, and the brake means is connected to the fixed cone. Bobbin loading mechanism.