JPS6048872A - Bobbin winding material feeder - Google Patents

Abstract

PURPOSE:To improve the quality while to reduce the cost by forming a frame for supporting a bobbin with a fixed frame and a movable frame to be pivoted movably up and down through a resilient control means thereby feeding wire material continuously with constant tension. CONSTITUTION:At the initial feeding stage of wire material, having long winding diameter while containing many wire materials 12 in the bobbin 14, the movable frame 28 is rotated by the self-weight of bobbin 14 downwardly around a pin 29 to apply high tension onto the brake band 22. When the wire material 12 is fed gradually to reduce the self-weight of bobbin 14, coil springs 31, 31' in resilient control means 30 will lift the movable frame 28 counter-clockwise around the pin 29 to reduce tension of brake band 22. Since constant back-tension is applied continuously onto the fed-out wire material 12, the tension of wire material 12 will never change resulting in production of high quality wire material with low cost.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a device for supplying bobbin-wound wire to a wire drawing machine, nine rewinding machines, etc.

This type of device generally applies a brake to the wire in order to apply some pack tension to the wire so that the wire is fed evenly.

In this way, disc braking means, electromagnetic braking means, or band braking means are used to apply a brake to the wire. Shigashi.

Disc brake means or electromagnetic brake means have high equipment and operating costs, and the winding diameter of the wire on the bobbin is reduced.
), it is necessary to change the fluid pressure or electromagnetic braking force, but in either case, the only drawback was that it was difficult to obtain a constant back tension. On the other hand, with punt braking means, the braking force is always constant, so the pack tension of the wire rod supplied from the bobbin changes as the winding diameter of the wire rod decreases, resulting in a decrease in quality and making the wire rod more likely to break, making it difficult to work. There were drawbacks.

An object of the present invention is to provide a bobbin winding material supplying device that can always supply wire with constant tension at low equipment and operating costs.

Practical examples of the present invention will be explained in detail with reference to the drawings.
1 and 2 show a pobbin 8 wire rod supplying device 10 according to the present invention, and this wire rod feeding device 10 includes a pair of bobbin holders that detachably and rotatably support a pobbin 14 on which a wire rod 12 is wound. Frame 18 with Ik 1116.16'
It consists of a brake drum 20 attached to at least one bobbin bearing shaft 16, and a brake band 22 wrapped around the brake drum.

The frame 18 is a fixed frame 2 fixed to a substrate 24.
6, and a movable frame 2B supported by the fixed frame 26 via an elastic control means 30 so as to be freely movable downward. In the illustrated embodiment, the movable frame 28 has pins 29
It is pivotally supported on the fixed frame 26 by. One end of the brake band 22 is fixed to the movable frame 28 by an adjustment screw 32, and the other end is attached to an adjustment spring 36 through a guide pulley 34 attached to the fixed frame 26, and this adjustment spring 36 is fixed to the base plate 24. ing. In the illustrated embodiment, the elasticity control means 30 are connected to the movable frame 28.
It consists of two coin-leaf springs 31, 31' disposed between the free end of the base plate 24 and the base plate 24.

In the above-mentioned wire rod feeding device, in the early stage of wire rod feeding when there are many wire rods 12 in the pobbin 14 and the diameter of 70 turns is large, the movable frame 28 is moved by the weight of the pobbin 14 as shown by the image line in FIG.
9, a large tension is applied to the brake band 22 downward. When the wire rod 12 is gradually supplied from this state and the dead weight of the pobbin 14 becomes smaller, the movable frame 28 is lifted counterclockwise in FIG. As a result, the tension of the brake bunt 22 becomes smaller. Therefore, since a constant back tension is always maintained on the wire rod 12 being fed out, the tension of the wire rod 12 does not change.

According to the present invention: 1. I: As shown in 9, the mechanical buffed brake allows wire rods to be supplied while maintaining constant tension at all times, so equipment costs and spooling costs do not increase, and therefore high-quality wire rods can be produced at low prices. There are practical benefits that can be manufactured.

[Brief explanation of the drawing]

1 and 2 are a side view and a front view of a bobbin winding material supply device according to the present invention. 10----Bobbin winding material supply device, 12-11-1 wire rod, 14-------Pobbin, ]6゜16'----
-- Pobin bearing shaft, 18 ----- Frame, 20 ---
--Brake drum, 22---Brake/Hend,
24------ノ, (plate, 26---fixed frame, 28---111 movable frame, 29---pin,
30--An elasticity control means, 36--Adjustment spring. Patent applicant t5 -11+1

Claims (2)

[Claims] (1) A frame that removably and rotatably supports a bobbin wound with a wire rod on a bobbin bearing shaft, a brake drum attached to at least one of the bobbin bearing shafts, and one end of which is wound around the brake drum, and one end of which is attached to the frame. and a brake band whose other end is fixed to the frame via an adjustment spring,
A bobbin winding material supplying device characterized in that the frame includes a fixed frame and a movable frame supported by the fixed frame so as to be vertically movable via elastic control means. (2) The bobbin winding material supply device according to claim 1, wherein the movable frame is pivotally supported by the fixed frame with a pin.