JPH0630862Y2 - Over rotation prevention device for bobbin holder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to an over-rotation preventing device for preventing over-rotation of a bobbin holder when a bobbin is rewound in a spinning machine. In addition, we provide a product that can visually adjust the over-rotation prevention force.

<Prior art> For example, in a spinning machine, a roving bobbin that is full is wound on a bobbin holder and the roving is wound up.In this winding operation, a braking force according to the winding speed is applied. It is required to be applied to the bobbin holder and be properly wound while preventing over-rotation.

Therefore, the present invention is directed to the over-rotation preventing device for the bobbin holder, and its basic structure is as shown in FIG. 1 or 2, in which the holder main body 3 is mounted below the suspending member 1 via the bearing 2. The screw rod 4 is supported rotatably, the screw rod 4 is projected upward on the suspension member 1, and the cap 5 fitted over the screw rod 4 is configured to be vertically movable along the screw rod 4 with a fastening nut 6.
The upper portion of the holder body 3 is covered with the cap 5, the pressure receiving surface 7 is formed on the upper end portion of the holder body 3, and the brake spring 10 is interposed between the inner depth 8 of the cap 5 and the pressure receiving surface 7 to form the bearing 2 Through the holder body 3
Is a type in which the suspension member 1 is elastically pressed against the suspension member 1 so as to be able to be braked.

As a conventional technique of this type, as shown in FIG. 2, a brake spring 10 is built in a cap 5, and a fastening nut 6 is rotated with respect to a screw rod 4 in a tightening direction or a loosening direction. The elastic force of the brake spring 10 is adjusted to increase or decrease the contact pressure of the holder body 3 with respect to the suspension member 1 to prevent the bobbin holder from over-rotating in accordance with the bobbin winding speed.

<Problems to be Solved by the Invention> However, in the above-described conventional technique, when an appropriate braking force is obtained with respect to a predetermined bobbin winding speed, there are the following problems.

Comparing the degree of tightening of the fastening nut 6 with the actual braking mode of the bobbin, there is the complexity of repeating the adjustment of the fastening nut multiple times.

Adjustment of the fastening nut 6 based on an empirical rule may be slightly deviated from an appropriate braking force.

An object of the present invention is to easily and properly adjust the braking force according to the rotation speed of the bobbin.

<Means for Solving the Problems> Means for achieving the above objects will be described below with reference to the drawings illustrating the embodiments.

That is, according to the present invention, in the over-rotation preventing device for a bobbin holder having the basic structure, the braking force indicating scale 14 is formed above and below the projecting / retracting area A of the holder body 3 which faces the lower end edge 12 of the cap 5. The lower end edge 12 of No. 5 is formed as a graduation aligning portion 15.

<Operation> The braking force indicating scale 14 is formed over the projecting / retracting area A of the holder body 3 facing the lower end edge 12 of the cap 5, and the cap 5
Since the lower end edge 12 of the bobbin is used as the graduation alignment portion 15, if the braking force is graduated by investigating the relationship between the rotation speed of the bobbin and the braking force in advance, the bobbin can be spun at a predetermined rotation speed. , The braking force indication scale 1 that is adapted to this rotation speed
4 will become clear in advance.

Therefore, an appropriate braking force can be easily obtained by aligning the scale adjusting portion 15 of the cap 5 with the compatible scale 14 and allowing the cap 5 to project and retract in the holder body 3.

Further, even when the rotation speed of the bobbin increases / decreases with each unit operation, if the graduation adjusting portion 15 is finely adjusted to the instruction graduation 14 according to the change amount, the braking force of the bobbin holder can be quickly adjusted to the rotation speed. Can fit into.

<Effect of the Invention> Appropriate braking force can be obtained quickly and easily by visually adjusting the calibrating portion of the cap with the braking force indicating graduation adapted to the predetermined bobbin rotation speed.

Therefore, unlike the prior art, it is not necessary to repeat the adjustment of the fastening nut a plurality of times, and it is possible to solve the problem that the adjustment based on the empirical rule is caused and the deviation from the proper braking force occurs.

<Embodiment> An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a vertical cross-sectional view of a bobbin holder, in which a holder main body 3 composed of a ratchet and a clutch mechanism is rotatably supported below a rod-shaped suspension member 1 via a bearing 2, and the holder main body 3 is coarsely supported. The paper tube 16 of the thread bobbin is configured to be suspended.

That is, the cup-shaped upper end portion 3a of the holder main body 3 and the bulged lower end portion 1a of the suspension member 1 are combined in a loose fit shape that cannot be slipped off, and ball grooves are provided above and below the loose fit portion. A plurality of balls are loaded between the grooves to form the bearing 2.

The screw rod 4 is projected upward from the suspension member 1, the umbrella-shaped cap 5 is fitted onto the screw rod 4, and the washers 17, 17 externally fitted to the screw rod 4 are brought into contact with the upper and lower surfaces of the cap 5. ,
The washer 17 is fitted into the screw rod 4 penetrating the outside of the cap 5, and the fastening nut 6 is fastened thereon.

An inner washer 1 having a pressure-receiving surface 7 formed on the upper side wall of the cup portion of the holder body 3 and located inside the inner part 8 of the cap 5.
A brake spring 10 made of a compression spring is interposed between the pressure receiving surface 7 and the pressure receiving surface 7, and the holder body 3 is elastically pressed against the suspension member 1 via the bearing 2 so as to be braked.

In this case, when the fastening nut 6 is tightened or loosened with respect to the threaded rod 4, the braking force of the bobbin holder can be adjusted according to the change in the elastic force of the brake spring 10.

On the other hand, the cylindrical handle portion 18 located above the holder body 3
Faces the lower end edge 12 of the cap 5, and therefore engraves a braking force indicating scale 14 composed of a plurality of horizontal line groups above and below the projecting / retracting area A of the cylindrical handle portion 18 while facing the holder body 3. The lower edge 12 of 5 is formed as the graduation portion 15.

Therefore, the function of the over-rotation preventing device for the bobbin holder will be described.

Since the holder main body 3 and the cap 5 are provided with the braking force indicating scale 14 and the scale aligning portion 15, respectively, if the relationship between the rotation speed of the bobbin and the braking force is investigated in advance and the braking force is scaled, If is spun at a predetermined rotation speed, the braking force indicating scale 14 adapted to this rotation speed becomes clear in advance.

Therefore, an appropriate braking force can be easily obtained and smooth spinning can be performed simply by aligning the scale adjusting portion 15 of the cap 5 with the compatible scale 14 and allowing the cap 5 to project and retract in the holder body 3.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of a bobbin holder of the present invention, and FIG. 2 is a view corresponding to FIG. 1 showing a conventional technique. 1 ... Lifting member, 2 ... Bearing, 3 ... Holder body, 4 ... Screw rod, 5 ... Cap, 6 ... Fastening nut, 7 ... Pressure receiving surface, 8 ... Inside of 5 ...... Brake spring, 12 ... 5 lower end edge, 14 ... Brake force indicating scale, 15 ... Scale setting part, A ... 3 in and out area.

Claims (1)

[Scope of utility model registration request] 1. A holder main body 3 is rotatably supported below a suspension member 1 via a bearing 2, a screw rod 4 is projected upward from the suspension member 1, and a cap 5 fitted over the screw rod 4 is fitted. It is configured so that it can be vertically displaced and fixed along the screw rod 4 with the fastening nut 6, the upper portion of the holder body 3 is covered with the cap 5, the pressure receiving surface 7 is formed on the upper end portion of the holder body 3, and the inner portion 8 of the cap 5 A brake spring 10 is interposed between the pressure receiving surface 7 and the holder body 3 via the bearing 2.
In the over-rotation preventing device of the bobbin holder that is elastically pressed against the suspension member 1 so as to be able to brake, the braking force indicating scale 14 is formed above and below the projecting / retracting area A facing the lower end edge 12 of the cap 5 in the holder body 3. The lower end edge 12 of the cap 5 is formed as the graduation alignment portion 15, and the over-rotation preventing device for the bobbin holder is characterized.