JPH0750032Y2 - Carrier device for braided wire production - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carrier device used in a braided wire manufacturing machine for manufacturing a braided wire used for a cable or the like.
It can be extended while exerting force
A small change in tension of the wire rod causes a large braking force on the bobbin.
A braid with a braking mechanism that is obtained and has a simple structure
Those concerning the line for manufacturing the carrier system.

[0002]

2. Description of the Related Art For example, a braided wire formed by weaving ultrafine wire is used as a shield member for an electric cable. In the braided wire manufacturing machine, as shown in FIG. 5, the wire rods are gathered in the center from a large number of carrier devices arranged in an annular shape, and the wire rods are knitted while rotating the carrier device.

The tension applied to the wire rod during the production of the braided wire is not constant but changes intermittently. Tension is not constant
When the wire is woven, it serves as a shield member for electric cables.
The characteristics are not constant and the product becomes defective. Tension applied to the wire
In order to maintain a constant value, the carrier device that feeds out the wire is stopped by applying a rotational load to the bobbin when no tension is applied to the wire and released when excessive tension is applied to the wire. However, there is a need for a brake mechanism that allows the bobbin to be rotatable so that the wire rod can be fed out.

As a conventional brake mechanism of a carrier device, for example, a band brake system and a brake shoe pressing system are known. However, the carrier device provided with these conventional brake mechanisms has the following problems. (A) The brake mechanism section has a structure in which a braking force is generated by the tension of the wire and the link mechanism increases the force. Therefore, the structure of the operating portion is complicated, the number of parts is large, the weight is heavy, and the response speed is slow. Moreover, it is easy to break down and the manufacturing cost is high. (B) Due to the structure in which the band and the brake shoe are biased by a biasing member such as a spring to be in close contact with the brake wheel to apply the brake, the bobbin is slightly rotated even when the bobbin is stopped in order to accelerate the bobbin stop timing during braking. It is adjusted so that the load will be applied. For this reason, the responsiveness of the feeding timing due to the rotation of the bobbin to the tension applied to the wire rod is poor, and when a thin wire rod is used, it is particularly easy to break and the wire rod cannot be fed stably. (C) Due to the above-described structure, for example, when the wire is wound a lot and the bobbin has a large inertia, a semi-effect of the brake during braking is likely to occur. Therefore, the stop of the bobbin is likely to be delayed, and the wire rod may loosen or become entangled. (D) When manufacturing a braided wire, the bobbin of the carrier device is frequently replaced. The timing is when the wire is cut, when the wire is no longer wound, or when the size of the braided wire is changed.When replacing the bobbin, hang the wire again on the winding part such as the winding roller. Need to set. However, since the conventional structure has a complicated structure of the operating portion, each member is complicated, and it takes time to wind the wire rod.

Japanese Unexamined Patent Publication (Kokai ) No. 48-45635 discloses a wire strand.
The adjustment arm rod swings due to the change in the tension of the
Rotational force of the bobbin braking car due to the brake string
An adjusting device for braking is disclosed. With this adjusting device
The brake string is loosened when the adjustment rod tilts to the bobbin side.
The braking force on the bobbin is released. On the opposite side
If you lean to the side, the brake string will be tense and the braking force on the bobbin
Is increasing (the same publication, page 3, lower left column, line 4)
Description from line 20 to line) .

[0006] This device is a braided wire manufacturing machine as shown in FIG.
When weaving a wire rod by using it for
When the force is weakened, the bobbin's braking force is relaxed and the wire tension
Power is reduced. On the contrary, the tension of the wire when braiding increases
And the braking force on the bobbin increases, and the wire tension increases.
Add In other words, there is no guarantee that the tension of the wire will be constant.
Therefore, the electric cable using the braided wire braided by this
Cables have defective shield characteristics and become defective.
For this reason, the above equipment is used as a carrier device for producing braided wire.
I can't do it.

[0007] Also, with this adjustment device, the tension
The structure is directly proportional to the braking force of the bobbin brake.
Therefore, if you try to obtain a large braking force,
It requires a great amount of tension. That is, the shield of the electric cable
In the case of extra fine wire such as braided wire used as a member
It is difficult to obtain a large braking force because it disconnects
It

[0008]

[The purpose of the device] Therefore, the purpose of the present invention is to
It is possible to feed while applying a constant tension, and
A slight change in the tension of the wire rod that is ejected causes a large change in the bobbin.
Equipped with a braking mechanism that provides braking force and has a simple structure
Another object of the present invention is to provide a carrier device for manufacturing such a braided wire.

[0009]

Construction of the Invention The construction of the present invention, which was devised to achieve the above object, is as follows. In the first device, the line
By controlling the braking force by the tension of the wire,
This is a device for feeding while applying a constant tension.
The device has a hold mechanism to which the bobbin is attached.
A bobbin holder that can swing freely in the wire feeding direction
It is provided and is attached to the hold mechanism section.
And a tension arm that guides the wire
Only the above-mentioned hold mechanism is a brake that works with the bobbin.
The foil and coil surround the outer circumference of the brake foil.
It is mounted so that it can change the tension of the wire rod.
Inner diameter of coil part in conjunction with the movement of the accompanying tension arm
Is reduced or enlarged to apply the braking force to the brake wheel.
Or a coil-shaped brake spring for releasing,
The brake spring and tension arm are
When the cam tilts to the bobbin side, the inner diameter of the coil is reduced and
Tighten the rake wheel to increase the braking force on the bobbin.
When tilted to the feeding side, the inner diameter of the coil section expands.
Brake wheel is loosened and the bobbin is braked.
It is designed to reduce the force, and
The winding direction of Kibane tries to rotate continuously due to inertia.
The brake wheel will wind the brake spring further in the winding direction.
Tighten to the brake wheel by reducing the inner diameter of the coil part
It is a carrier device for producing a braided wire, which is arranged so as to increase the applying force .

According to a second aspect of the invention , there is provided a carrier device for producing a braided wire according to the first aspect, which comprises an adjusting means capable of adjusting the swing resistance of the tension arm.

According to a third aspect of the invention, there is provided a carrier device for producing a braided wire according to the first or second aspect, which is provided with an adjusting means capable of adjusting the inner diameter of the coil portion of the brake spring in a normal state.

[0012] The operation for the brake wheel is a free rotation when the tension arm is rotated in response to the tension of the wire fed from the bobbin. On the contrary, when the tension of the wire is released and the tension arm returns, the brake wheel that tries to rotate continuously due to the inertia of the bobbin comes into contact with the brake spring .
It This allows the brake spring to be wound further in the winding direction.
And reduce the inner diameter of the coil to tighten it on the brake wheel.
The braking force is increased and the brake wheel is locked.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiments shown in the drawings. 1 is a perspective view of an embodiment of a carrier device, and FIG. 2 is an explanatory view showing a state in which a brake spring is tightened,
FIG. 3 is an explanatory view showing a state where the brake spring is loose.
Reference numeral A is a carrier device, which has a bobbin holder 1 formed of a rope and having a U-shape in plan view. Both holder plates 11 and 12 of the bobbin holder 1 facing each other are provided with a holding mechanism section 2 to which a bobbin B described later can be attached and detached. The hold mechanism section 2 is composed of a control holder 2a and a support holder 2b.

[0014] First, the structure of the control holder 2a.
The control holder 2a is attached to the tip of the holder plate 11, and has a bearing 21, a holder shaft 22, and a brake wheel 23.
Be equipped with. The holder plate 11, the shaft hole Yes in (not shown) is provided, the control holder 2a is a bearing 21 fixed to the outside of the holder plate 11, together with passing the holder shaft 22 to the shaft hole, the holder shaft 22 The brake wheel 23 is fixed near the holder plate 11.

A coil-shaped brake spring 24 is attached to the brake wheel 23 such that the inner wall of the coil portion 240 surrounds the outer peripheral portion 230 of the brake wheel 23. Note that the winding direction of the brake spring 24 is such that the inner diameter of the coil portion 240 is narrowed when the tension of the wire L is loosened and the tension arm 3 described later rotates in the returning direction, that is, by the rotation of the brake wheel 23. It is set to tighten.

The both ends of the brake spring 24 is formed by extending slightly longer, one end 241 described next adjustment plate 2
The other end 242 is attached to the base side of the tension arm 3 to be described later through a round hole 39 with some play. In addition, 25 is an engaging groove 28 of the bobbin B.
It is a bobbin stopper that engages (illustrated in FIG. 4).

[0017] The bearing 21 and the fixed plate 211 adjusts Release 21
The adjustment plate 212 can be rotationally adjusted in the circumferential direction by the adjustment screw 214 within the range of the elongated hole 213. Then, as described above, the one end portion 241 of the brake spring 24 is formed in the adjusting plate 212 from the rear side of the holder plate 11 into a long hole (not shown).
It is attached by penetrating through it. The support holder 2b is
It has a support shaft 26 that can be freely moved in and out, and has a structure in which a stopper member (not shown) is released to operate a knob 27.

A shaft pin 31 is provided inwardly in the center of the holder plate 11. An adjustment lever 32 is rotatably attached to the base side of the shaft pin 31. Further, a tension arm 3 formed in a substantially L shape is attached to the tip of the shaft pin 31 so as to be rotatable as well. A coil-shaped adjusting spring 33 is mounted between the tension arm 3 and the adjusting lever 32.

[0019] One end portion 331 of the adjustment spring 33 is hooked on the root portion of the adjusting lever 32. The other end 332 is hooked on the arm plate 34 of the tension arm 3.
Reference numeral 321 denotes an adjusting screw, which penetrates the elongated hole 111 provided in the holder plate 11 and is screwed to the lower end of the adjusting lever 32 from the outside, and rotates the adjusting lever 32 within the range of the elongated hole 111. I am able to adjust it.

A winding roller 35 is attached to the tip of the tension arm 3. Also tension arm 3
A stopper mechanism (not shown) is provided on the original side of the tension arm 3 so that the tension arm 3 swings within a certain angle range. Further, the bobbin holder 1 has a mounting plate 13 at the center thereof, and mounting holes 131 are provided at two positions at the lower end. The base plate 4 is attached to the upper part of the attachment plate 13 substantially horizontally. A base 41 is attached to the rear portion of the base plate 4, and a rotary shaft 43 is pivotally supported on the top thereof. An arm bar 42 having a tension bar 46 at the upper end is attached to one end of the rotating shaft 43.

The arm bar 42 is combined with a sensor (not shown) to detect wire breakage. Also,
The rotating shaft 43 is biased in the clockwise direction in the figure by a coil spring 45, and a knob 44 is provided at the other end. In addition, 47 is a wire rod pressing spring, which is attached with its tip portion in contact with the rotating shaft 43. Then, in the substantially central portion of the front of the base member 41, winding rollers 48 corresponding to the winding roller 35 is mounted. Reference numeral 49 is a guide body for preventing the wire material wound on each winding roller from coming off easily.

FIG . 4 shows the setting state of the bobbin and the wire rod .
FIG. 5 is a schematic view of a braided wire manufacturing machine.
It Carrier device A is a braided wire manufacturing device as shown in FIG.
It is attached to the peripheral part of the turntable 51 of
Ng is performed as follows. Knob 27 of support holder 2b
By operating the hold mechanism section 2 of each carrier device A.
Install bottle B. Pull out the wire L from the bobbin B and
Pass it through the id body 49 and hang it on the winding roller 48,
It is hung on the winding roller 35 of the arm 3 and rotated with the pressing plate 47.
Pass through the moving shaft 43 and hang it on the tension bar 46.
It is introduced into the braid part 52 as shown in FIG.

(Operation ) The operation of the present embodiment will be described with reference to FIGS. 1 to 4.
The adjusting mechanism using the adjusting lever 32 and the adjusting board 212 is to cope with variations in biasing force of the adjusting spring 31 and the brake spring 24, differences in the thickness of the wire L used, and the like. The swinging resistance of the arm 3 is adjusted, and the adjusting board 212 adjusts the stop timing of the bobbin B mounted on the hold mechanism section 2.

[0024] For example, if you want to braid a very thin wire rod,
The swinging resistance of the tension arm 3 needs to be set lightly, but the setting is done by loosening the adjustment screw 321.
2 is rotated to the left in FIG.
The urging force applied to is lightly eliminated, and the adjusting screw 321 is tightened and fixed at an appropriate position. When the wire rod is thick, in order to increase the tension of the wire rod, the adjustment lever 32 is rotated to the right to increase the biasing force applied to the tension arm 3.

The wire L applied to the tension arm 3
Adjustment of the stop timing of the bobbin B corresponding to the change in the tension is performed as follows. First, when accelerating the stop timing, after loosening the adjustment screw 214, the adjustment plate 212 of the control holder 2a is rotated to the right in FIG. 1 to adjust both ends of the brake spring 24 so that the coil portion 2 is adjusted.
The gap between 40 and the brake wheel 23 is narrowed. Also, when slowing down, rotate to the left to adjust both ends of the brake spring 24 so that they open and adjust , and
Make sure to widen the gap with the rake wheel 23 .

When the tension arm 3 receives the tension of the wire rod L fed from the bobbin B and is pulled and rotated, the coil portion 240 of the brake spring 24 expands and the space between the tension arm 3 and the outer peripheral portion of the brake wheel 23. A gap S is created in the contact hole, the contact state is released, and free rotation is performed (see FIG. 3), and the wire L is stably fed out from the bobbin B.

[0027] On the contrary, when the back tension arm 3 is the tension of the wire L is released, of the coil portion 240
Due to the small diameter of the bobbin B, the bobbin B contacts the brake wheel 23, which continuously rotates. Brake wheel
Brake spring 24 by contact with 23 further wound write rare winding direction, tightly clamping the brake wheel 23 the inner diameter of the coil portion 240 of the brake spring 24 is further a narrow (see FIG. 2), the holder shaft 22 is fully The bobbin B is stopped and locked. The present invention is not limited to the illustrated embodiment, and various modifications can be made within the scope of the claims for utility model registration.

[0028]

The present invention has the above-mentioned structure and has the following effects. (A) The braking of the bobbin is performed by the brake hoist which is linked with the bobbin.
And the coil part surrounds the outer circumference of the brake wheel.
Do this with the brake spring installed in this way.
The tension between the brake spring and the tension arm is
When the arm is tilted to the bobbin side, the inner diameter of the coil is reduced.
Slightly tighten the brake wheel to brake the bobbin
When the force is increased and the coil tilts toward the feeding side, the coil part
The brake wheel is loosened and the bobbin is
The braking force is reduced. Therefore
The child who feeds the wire while applying a substantially constant tension
Therefore, a carrier device suitable for manufacturing a braided wire can be provided. (B) The winding direction of the brake spring continues due to inertia.
The brake wheel that tries to rotate winds the brake spring.
Direction to further reduce the inner diameter of the coil,
This is the direction to increase the tightening force on the sill. Because of this
A large change in tension of the wire that is applied to the bobbin
Force is obtained and it can be used as a shield member for electrical cables.
It is suitable for braided wire manufacturing, such as braiding of extremely fine wires such as
A suitable carrier device can be provided . (C) In the case where the means for adjusting the swinging resistance of the tension arm and the inner diameter of the brake spring in the normal state are provided, each adjustment is performed even when the wire is thick or when the wire is wound a lot and the bobbin has a large inertia. If the sensitivity of the tension arm and the timing of stopping the bobbin are set in advance by the parts, the holder shaft is immediately locked during braking, and the half-effect of braking does not occur. Therefore, it is possible to prevent the wire rod from being loosened or entangled by the wire rod.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a carrier device .

FIG. 2 is an explanatory diagram showing a state in which a brake spring is tightened.

FIG. 3 is an explanatory diagram showing a state where a brake spring is loose.

FIG. 4 is a perspective view showing a setting state of a bobbin and a wire rod.

FIG. 5 is a schematic explanatory view of a braided wire manufacturing machine.

[Explanation of symbols]

 A carrier device 1 bobbin holder 2 hold mechanism section 22 holder shaft 23 brake wheel 24 brake spring 3 tension arm B bobbin

Claims (3)

[Scope of utility model registration request] 1. A braking force is controlled by the tension of a wire rod.
For feeding while applying a substantially constant tension to the wire
A device, which has a holding mechanism part (2) to which a bobbin (B) is mounted.
The bobbin holder (1) and the wire rod (L) are provided so as to be swingable in the feeding direction.
A bobbin attached to the hold mechanism section (2)
Tensioner for guiding the wire (L) wound around (B)
Wherein beam and (3), and the hold mechanism (2) is outside of the bobbin and the brake wheel (23) that work (B), and a coil portion (240) of the brake wheel (23)
It is attached so as to surround the peripheral part (230),
Tension arm (3) accompanying the change in tension of the wire (L)
Or reduce the inner diameter of the coil (240)
Expands to apply braking force to the brake wheel (23) or
A coiled braking spring to release the (24), the equipped, the brake spring (24) and the tension arm (3)
The tension arm (3) tilts to the bobbin (B) side.
Then, the coil portion (240) is reduced in inner diameter to reduce the brake hoist.
Tighten the lever (23) to reduce the braking force on the bobbin (B).
When strengthened and tilted to the feeding side, coil part (240)
Enlarge the inner diameter to tighten the brake wheel (23)
Looseness It is designed to reduce the braking force on the bobbin (B).
Made which are further winding direction of the brake spring (24) is the inertia
The brake wheel (23) that tries to rotate continuously
Take the brake spring (24) further in the winding direction and
Reduce the inner diameter of the lever part (240) to the brake wheel (23)
A carrier device for producing a braided wire, characterized in that the tightening force of the wire is increased . 2. The carrier device for manufacturing a braided wire according to claim 1, further comprising adjusting means capable of adjusting the swinging resistance of the tension arm (3). 3. The carrier device for manufacturing a braided wire according to claim 1, further comprising adjusting means capable of adjusting the inner diameter of the coil portion (240) of the brake spring (24) in a normal state.