JPH02153084A - Surface treatment of coiled wire rod - Google Patents

Abstract

PURPOSE:To easily penetrate a treating liquid into the wire bundle of the coiled wire rod so that reaction is uniformly effected by holding up the wire rod from below by a belt-like hanging-up body and moving the hanging-up body back and forth to move the wire rod while the contact of it with lifting hook is released. CONSTITUTION:A C-shaped lifting hook 2 is inserted into the coil of the coiled wire rod (c) and the wire rod is lowered into the treating liquid in a treating tank 1. Winders 4a, 4b are rotated to wind up the belt-like hanging-up body 3 and to hold up the wire rod (c) from outside below by the hanging-up body 3 so as to release the wire rod from contact with the C-shaped hook 2. This state is maintained and the hanging-up body 3 is moved back and forth by executing winding-up and -out of the winders 4a, 4b by which the wire rod (c) is rotated forward and backward. This forward and backward rotations are repeated to accelerate the reaction by the treating liquid. The hanging-up body 3 is slackened upon after the reaction and the wire rod (c) is lifted on the hook 3. The rotations of the winders 4a, 4b are then stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for subjecting a coiled wire to surface treatments such as degreasing, alkali cleaning, pickling, water washing, and coating with a chemical solution.

<Conventional technology> Conventionally, surface treatment of coiled wire with a treatment solution involves passing a hanging device such as a C-shaped hook into the coil of the coiled wire, and placing the coiled wire in a treatment tank while supporting the coiled wire with this hanging device. put it inside,
A reaction with the treatment liquid was carried out. In addition, in order to achieve a good reaction with the treatment solution, a vibratory pickling method and device was published in 1973, in which the hanging tool was equipped with a vibrator and the coiled wire was vibrated while reacting. Starting with issue No.-46781,
Various proposals have been made.

<Problems to be Solved by the Invention> However, when surface treatments such as degreasing, alkali cleaning, pickling, water washing, and chemical coating are applied to a coiled wire supported by a hanger, the following problems occur. The upper inner circumference of the coil, which is in contact with the hanging tool, receives a large compressive load due to the wire's own weight, so water and liquid do not penetrate well, and the original reaction effect of the liquid to the wire is insufficient, resulting in incomplete degreasing. Sometimes mackerel remains. In addition, residual alkali and residual acid are generated during water washing for dealkalization and deoxidation, and uniform reactions do not occur in the coating. Since they are in close contact with each other, a similar problem occurs.

Such unevenness and quality defects in degreasing, pickling, water washing, and coating treatments can cause wire breakage and shortened tool life in the next plastic forming process, significantly hindering productivity and having a negative impact on product quality. I will give you.

As a countermeasure to the above problem, vibration pickling using the above vibrator has already been put into practical use, but this method has the following problems. First, the wire rod is constantly subjected to heavy loads and shocks due to vibrations at the part where it comes into contact with the hanging tool, so there is a risk of injury. Moreover, vibrations tend to cause deterioration and damage to the main body of the apparatus and related equipment, and furthermore, since a vibrator is provided, the apparatus becomes larger and more expensive.

<Means for Solving the Problems> Accordingly, the present invention involves lowering a coiled wire into a processing tank while supporting it with a wire hanging tool inserted into the coil, and then letting it slack in a U-shape. By winding up a planar lifting body such as a net disposed in the processing tank from one end or both ends, the coiled wire is lifted from the outside from below, released from contact with the wire hoist, and the wire is While maintaining the open state with the hanging tool, the planar lifting body is repeatedly moved from one end to the other end, and back from the other end to the one end. The above-mentioned problems are solved by providing a surface treatment method for a coiled wire, which is characterized in that the wire is repeatedly rotated and slid by reciprocating the wire to cause a reaction with a treatment liquid. .

Effect> In the treatment method of the present invention, the planar lifting body lifts the coiled wire from below and releases the coiled wire from contact with the wire hanging tool. The load on the top can be removed. Then, while maintaining the open state with this wire hanging tool, the planar lifting body is repeatedly moved back and forth, and the coiled wire is moved in the circumferential direction by rotating the coiled wire back and forth. At the same time, each wire of the wire rod slides, and the processing liquid is also stirred by these movements. As a result, the treatment liquid easily permeates into the inside of the wire bundle of the coiled wire rod and is easily replaced, so that the reaction is carried out sufficiently and evenly.

<Example> First, an apparatus used in the processing method of the present invention will be explained based on FIGS. 1 to 4.

This equipment consists of a processing tank (1
), and a C-shaped hook (2) which is a wire hanging tool that is separate from the processing tank (1) and is movable vertically and laterally.
and a planar suspension body (3) attached to the processing tank (1).

In this embodiment, this planar suspended body (3) is shown in FIG.
), a net-like body consisting of four vertical strings (31a) made of stainless steel chains and a number of horizontal strings (32a) (32b) stretched between them was used.

More specifically, the negative horizontal string (32a) is made of stainless steel bar, the other horizontal string (32b) is made of stainless steel chain, and these (32a) (3
2b) were arranged alternately. In addition, each vertical string (31a
)... is connected to a stainless steel wire rope (31b) having a fastening part (31c) at the end. This net shape is advantageous in that the vertical and horizontal strings (31a) (32a) (32b) that come into contact with the coiled wire have an uneven shape, and each wire inside and outside the wire can slide smoothly due to the unevenness. It is. Furthermore, in order to realize active sliding of each line even when the hoop binding is not released, a protrusion (1) as shown in FIG. 4(B) may be provided on the horizontal string (32a). .

In addition to this embodiment, the material, shape, etc. of the planar suspension body (3) may be selected depending on the type of wire rod and treatment liquid. , as long as it is substantially a surface, it does not have to be a single sheet, and may be a plurality of sheets arranged in parallel in the coil axis direction of the coiled wire at appropriate intervals. A large number of them may be arranged in parallel to form a substantially planar surface.Furthermore, various modifications may be made such as a flexible punching band or a structure in which these planar objects are stretched between chains, but in any case, coiled It is preferable that unevenness is formed on which the wire can slide.

For example, when a large number of synthetic resin belts such as acid-resistant polypropylene are arranged in parallel, protrusions may be integrally molded on the belts, and when a large number of long bodies such as lobes are arranged in parallel, protrusions may be formed on the outer periphery of the ropes. A large diameter wire rope can also be spirally wound to form a protrusion. Furthermore, a protrusion in the shape of a truncated cone may be attached to the punching band by welding or bolting.

This planar suspended body (3) has winding devices (4a>
(4b). This winding device 1F (4a
) (4b) are provided at the left and right upper ends of the processing tank (1), and the planar suspended body (3) has both ends connected to the left and right winding devices f (4a).
(4b), and is arranged in the processing tank (1) in a sagging U-shape.

The winding devices (4a) and (4b) each have four drums (rollers) fixed to a rotating shaft 1111,
The wire rope (31
b) The end fastening part (31c) is attached to the zero rotation wheel (
The motor is connected to an electric motor with a brake via a continuously variable transmission. Therefore, the rotating wheel 111 is rotated by the electric motor (b), and its control can be controlled manually or automatically.

As a control means for this automatic rotation, a switch device shown in FIG. 3 is used in this embodiment.

This switch device consists of a screw shaft tie that rotates together with the rotation shaft @υ via a transmission means such as a belt, an actuation bend provided on a feed screw screwed into this screw shaft, and a It consists of four proximity switches 60 mg (4), first to fourth, which operate in a complementary manner.

Among these, the first and fourth proximity switches 6υ (3) at both ends
prevents the winding device from winding, and the second and third proximity switches control automatic reciprocation of the planar suspended body, which will be described later. still,
The position of each proximity switch aIlasg (b) is variable, and by changing this, the reciprocating period etc. can be adjusted.

Next, a method for processing a coiled wire using the above-mentioned apparatus will be explained based on FIGS. 5 and 6.

la) Insert the C-shaped hook (2) into the coil of the coiled wire (C), lower it into the treatment tank (1), and immerse it in the treatment liquid (Figures 5 and 6 (A)). In this state, the planar suspension body (3) is arranged in the processing tank (1) in a sagging U-shape.

lb) By simultaneously rotating the left and right winding devices (4a) and (4b) outward in the drawing, the planar suspension body (3) is wound up (Fig. 6(B)), whereby the coiled wire ( C) is held up from below on the outside by the planar lifting body (3). As a result, the wire rod (C) is released from contact with the C-shaped hook (2), and the pressure due to the wire rod (C)'s own weight is removed.

Incidentally, winding by the winding devices (4a) (4b) may be performed by operating only one of the left and right sides.

lc) Rotate the coiled wire (C) while maintaining the open state from the C-shaped hook (2). Specifically, by simultaneously winding up the left winding device (4a) (rotating it in the outward direction as shown in the figure) and rotating the right winding device fi (4b) in the inward direction in the figure), the surface shape can be improved. The hanging body (3) is moved from the right end side to the left end side. Thereby, the coiled wire rotates while being held up by the planar suspension body (3).

In this embodiment, it is stopped after being rotated approximately 90 degrees.

Next, by simultaneously rotating both winding devices in opposite directions, the planar lifting body (3) is moved back from the left end side to the right end side. As a result, in the example, the coiled wire (C) is
Rotated approximately 180 degrees in the opposite direction.

This coiled wire (C) is repeatedly rotated back and forth through approximately 180 degrees for a predetermined period of time to promote a reaction by the treatment liquid.

This reciprocating rotation is controlled by the second and third proximity switches, and the rotation angle can be freely changed by changing the position of the proximity switches. Further, although the control in the steps 1a) and lb) may be performed manually, it can also be automated by adding proximity switches.

ld) After finishing the surface treatment, use the same device for both volumes (4a) (4b)
Rotate inward as shown in the figure to loosen the planar suspension body (3),
Place the coiled wire (C) on the C-shaped hook (2), and place Ia)
The rotation of the winding devices (4a) and (4b) is stopped in the same state as described above.

Thereafter, the coiled wire rod (C) is transferred to a tank for the next process, and by preparing planar suspension bodies (3) in multiple tanks, efficient continuous processing becomes possible.

Next, a method of processing the coiled wire while it is in the steel bar carrier 00) will be explained based on FIGS. 7 and 8. In the figure, 001 indicates a steel bar carrier that is inserted into the coil of the coiled wire (C) to hold it, and (9) is a special carrier that suspends the steel bar carrier with a chain (8) or the like. Shows hanging equipment. In addition, this special hanging tool (9
), but the C-shaped hook may be inserted into the carrier 00).

2a) Coiled wire rod (C1 is steel bar carrier 00)
Suspend the entire product using a special hanging device (9), lower it into the processing tank (1), and immerse it in the processing solution (Fig. 7, Fig. 8 (A)).
.

2b) The left and right winding devices (4a) (4b) wind up the planar suspended body (3) (Fig. 8 (B)), whereby the coiled wire (C) is rolled up into the planar suspended body. At (3), it is lifted from the outside from below and released from contact with the steel bar carrier 〇〇).

In addition, winding device 1! The winding according to (4a) and (4b) is
It is also possible to operate only one of the left and right.

2c) While maintaining the open state from the steel bar carrier (1121), the coiled wire rod (C) is rotated back and forth (
Figure 8(C)).

2d) After finishing the surface treatment, use the same device for both volumes (4a) (4b)
Rotate inward as shown in the figure to loosen the planar suspension body (3),
The coiled wire rod (C) is supported on the steel bar carrier side,
2a) and the winding device (4a) (4b).
) (Fig. 8(d)).

In the present invention, "picking up the coiled wire from below on the outside to release it from contact with the wire hoist" means to substantially remove the load applied to the upper inner circumference of the coiled wire; This does not mean to exclude accidental contact that occurs during reciprocating rotation of the wire rod, and the winding device (4a) (4
b) In addition to winding up the planar suspension body (3),
It is also possible to change the planar suspension body (3) to one in which both ends are free ends and the planar suspension body (3) is rolled up. Furthermore, the rotation angle of the coiled wire is not limited to 180 degrees.

<Effects of the Invention> The processing method of the present invention picks up the coiled wire rod from below, floats it from the wire rod hanger, and rotates it back and forth with the load applied to the upper inner circumference of the wire bundle removed. slides, and the processing liquid is stirred and easily penetrates into the inside of the wire bundle and replaced, so that the reaction is carried out sufficiently and evenly.

Therefore, the reaction of the processing liquid is sufficiently and evenly carried out at the upper part of the inner circumference of the coil, and since no vibration is generated, the coil is not constantly subjected to shocks due to heavy loads and vibrations, and the fear of complete explosion has been eliminated. Moreover, there is no room for deterioration or damage to the device main body and related equipment due to vibration, and
Reliable surface treatment can be achieved using simple and inexpensive equipment.

[Brief explanation of the drawing]

Figure 1 is a sectional view taken along the line 1-1 in Figure 2, Figure 2 is a plan view of the apparatus used in the treatment method of the present invention, Figure 3 is an enlarged view of the main parts of Figure 2, and Figure 4 (A). 4(B) is a perspective view showing a modified example of the horizontal strings of the planar suspension used in the treatment method of the present invention, and FIG. 5 is a treatment method of one embodiment. Fig. 6 (A) is an explanatory diagram of the processing device seen from the side showing the
to (D) are cross-sectional explanatory diagrams showing each step of the same processing method, Fig. 7 is an explanatory diagram showing the processing method of another embodiment as seen from the side of the processing apparatus, and Figs. 8 (^) to (D) FIG. 2 is a cross-sectional explanatory diagram showing each step of the same treatment method. (1)...Processing tank, (2)...C-shaped hook, (3)
... Planar suspension body, (4a) (4b) ... Winding device, (8) ... Chain, (9) ... Special hanging tool, 00) ...
・Steel bar carrier, (31a)...Vertical string, (32a) (32b)...Horizontal string, Co., Ltd.
...Rotating shaft, 113...Drum, 1131...Electric motor with brake, (F)...Belt, ■...Screw shaft, (Capital)...Operating piece, (C)... - Coiled wire.

Claims (1)

[Claims] 1. The coiled wire is lowered into the processing tank while being supported by a wire hanging tool inserted into the coil, and then the coiled wire is slackened in a U-shape and placed in the processing tank. By winding up the planar lifting body such as a net from one end or both ends, the coiled wire is lifted from the outside from below and released from contact with the wire hoist, and the coiled wire is released from contact with the wire hoist. forward movement of moving the planar suspended body from one end side to the other end side while maintaining the
The coiled wire is repeatedly moved back and forth from the other end to the one end, thereby causing the coiled wire to rotate and slide repeatedly and react with the processing liquid. A method for surface treatment of coiled wire.