KR102344329B1 - Method for forming double torsion spring - Google Patents

Abstract

The present invention relates to a method for forming a double torsion spring. According to embodiments of the present invention, the method includes a supplying step for supplying a coiled steel wire into a straight line; a transfer step for transferring the steel wire; a forming step for pushing the steel wire in a plurality of directions to be formed into a double torsion spring shape; a cutting step for cutting the formed spring; and a heat treatment step for heat-treating the cut spring, wherein the steel wire is transferred by a plurality of conveying rollers in the transfer step and the steel wire is formed into the double torsion spring shape by a forming means in the forming step. The method of the present invention can product a double torsion spring having a size suitable for uses.

Description

Double torsion spring forming method

The present invention relates to a method for forming a double torsion spring, and to a method for forming a double torsion spring for forming a spring having a double torsion shape having various sizes by using a steel wire transfer roller and a forming means.

In general, a double torsion spring is a coil spring that operates by torsion or torsion (rotational motion), and the end of the torsion spring is attached to a separate component to store mechanical energy during torsion.

These, double torsion springs manufacture custom torsion springs with round, square, rectangular and special section wire, the most common material types are formed from stainless steel, music wire, spring steel and hard steel.

The spring legs can be in any position and formed into almost any bend, bend, twist, or annular form depending on the custom application.

Spring ends are available in several standard shapes: short hook end, hinged end, straight offset, straight torsion, special end, straight torsion, and double torsion.

However, there is a problem in that it is not possible to manufacture a double torsion spring having a variety of sizes because it is not possible to form a size suitable for use when manufacturing such a spring.

On the other hand, as the prior art related to the present invention, there is Korean Patent Registration No. 10-1419698 (published on July 9, 2014) and the like.

The present invention has been derived to solve the above problems, and in molding the double torsion spring, an object of the present invention is to provide a molding method capable of producing a double torsion spring having a size suitable for use.

According to an embodiment of the present invention, a supply step of supplying a circularly wound steel wire in a straight line; a transfer step in which the steel wire is transferred; a forming step in which the steel wire is pushed in a plurality of directions to form a double torsion spring shape; Cutting step in which the molded spring is cut; and a heat treatment step in which the cut spring is heat-treated, wherein in the conveying step, the steel wire is conveyed by a plurality of conveying rollers, and in the forming step, the steel wire is formed in the shape of the double torsion spring by a forming means.

The conveying roller may include a pair of first conveying rollers disposed on both sides of the steel wire, a pair of second conveying rollers disposed on upper and lower sides of the steel wire, and a rotating means for rotating the steel wire.

The forming means may include a first forming part installed on the lower side to form a double torsional shape of the steel wire by rotation and vertical movement.

The forming means may further include a second forming part installed to be spaced apart from both sides of the first forming part and sliding toward the steel wire to form a spring shape of the steel wire.

According to the present invention having the above steps and characteristics, in forming the double torsion spring, it is possible to produce a double torsion spring having a size suitable for the purpose.

In addition, it is possible to reduce the production time when producing the double torsion spring.

1 is a flowchart for explaining a method of forming a double torsion spring according to an embodiment of the present invention.
2 is a view for explaining a conveying roller according to an embodiment of the present invention.
3 is a view for explaining a molding means according to an embodiment of the present invention.
4 is a view showing a jig of the second forming part according to an embodiment of the present invention.
5 is a view for explaining a heat treatment apparatus according to an embodiment of the present invention.
6 is a view showing a double torsion spring manufactured according to an embodiment of the present invention.

Since the present invention can have various changes and can have various forms, implementation examples (態樣, aspects) (or embodiments) will be described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

The terminology used herein is only used to describe a specific embodiment (aspect, aspect, aspect) (or embodiment), and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as comprises or consists of are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other features It is to be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

~1~, ~2~, etc. described in the present specification are only to be referred to to distinguish that they are different components, and are not limited to the order of manufacture, and their names in the detailed description and claims of the invention are may not match.

Hereinafter, a method of forming a double torsion spring according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6 .

1 is a flowchart for explaining a method of forming a double torsion spring according to an embodiment of the present invention.

As shown in Figure 1, the double torsion spring forming method according to the embodiment of the present invention is a feeding step (S1), a transferring step (S2), a forming step (S3), a cutting step (S4), a heat treatment step (S5) and coating Step S6 is included.

First, in the supply step (S1), the steel wire wound on the turret is provided to the conveying roller 10, and in the conveying step (S2), the supplied steel wire is conveyed using the conveying roller 10.

2 is a view for explaining a conveying roller according to an embodiment of the present invention.

As shown in FIG. 2 , the conveying roller 10 includes a first conveying roller 11 , a second conveying roller 12 and a rotating means 13 .

First, the first conveying roller 11 according to the embodiment of the present invention is disposed on both sides of the steel wire, the second conveying roller 12 is disposed on the upper and lower sides of the steel wire, and the rotating means 13 is the feeding roller 10 ) is located behind the

That is, the steel wire moves in one direction as the first transfer roller 11 and the second transfer roller 12 forming a set rotate. In addition, the first conveying roller 11 and the second conveying roller 12 constituting a set are arranged in a line so that the steel wire can be stably moved in the horizontal direction.

Here, the first conveying roller 11 and the second conveying roller 12 forming a set can rotate 360 degrees through the rotating means 13 located at the rear. That is, through this rotation, the steel wire tied to the turret is stretched in the horizontal direction.

Next, in the forming step (S3), the steel wire transferred from the transferring step (S2) is formed into a double torsion spring shape by using the forming means 20 .

Here, the forming means is installed at the lower side and spaced apart from the first forming part and both sides of the first forming part to form a double torsional shape of the steel wire by rotation and vertical movement, sliding toward the steel wire to form a spring shape of the steel wire It includes a cutting member 24 for cutting the second forming part 22 and the support member 23 for assisting the spring shape of the steel wire and the completed double torsion shape of the spring.

3 is a view for explaining a molding means according to an embodiment of the present invention.

As shown in FIG. 3 , the first forming part 21 according to the embodiment of the present invention is installed in the 6 o'clock direction based on the clock, and forms a double torsion shape of the steel wire moving forward.

At this time, the upper surface of the first forming part 21 includes a plurality of irregularities for forming a double torsion shape, and the steel wire is formed into a double twisted shape through rotation of the upper surface.

In this case, a double torsion shape having a plurality of shapes and sizes may be manufactured through a plurality of irregularities and rotational movement provided on the upper surface of the first forming part 21 .

Next, the second molding part 22 is formed to be spaced apart by a predetermined angle to the right and left sides of the first molding part 21 .

In this case, the second forming part 22 includes an exchangeable jig 22-1, and the jig 22-1 is formed to be replaceable.

4 is a view showing a jig of the second forming part according to an embodiment of the present invention.

That is, as shown in FIG. 4 , each of the jigs 22-1 can be exchanged.

The second forming part 22 may form a spring shape having a plurality of sizes by exchanging the jig 22-1.

And, the forming means 20 further includes a support member 23 for supporting the steel wire when forming the steel wire using the second shaping portion 22.

At this time, the support member 23 is installed at 2 o'clock and 9 o'clock in the clockwise direction, respectively.

That is, the spring back phenomenon can be reduced when the spring shape is formed using the support member 23 .

Next, the cutting step (S4) is cut using the cutting member 24 when the steel wire is formed in a double torsion shape.

Here, the cutting member 24 is arranged at 10 o'clock and 3 o'clock in a clockwise direction.

In addition, the cutting member 24 includes a cutting jig having the same size as the diameter of the steel wire, and the cutting jig is detachable and may correspond to the diameter of the steel wire.

In addition, the second forming part 22, the support member 23, and the cutting member 24 may be moved through sliding means, respectively.

Next, in the heat treatment step (S5), the double torsion spring 100 cut through the heat treatment means 30 is heat treated.

5 is a view for explaining a heat treatment apparatus according to an embodiment of the present invention.

That is, the double torsion spring 100 is heat-treated using the heat treatment means 30 as shown in FIG. 5 .

Next, in the coating step (S6), a protective film is coated on the surface of the heat-treated spring.

On the other hand, in the coating step (S6) according to the present invention, it is necessary to effectively remove dust, nitrogen oxides, etc. present on the surface of the heat-treated spring, prevent rust from being generated on the surface of the spring, and remove the nitrogen oxides described above It is necessary to remove the moisture present in the atmosphere to maximize the

Therefore, the present invention further comprises a protective film provided on the surface of the heat-treated spring, the protective film is based on 100 parts by weight of the binder, titanium tetrachloride 12 parts by weight, platinum ions 0.3 parts by weight, calcium magnesium acetate 10 parts by weight, ocher powder 5 parts by weight An intermediate layer and the intermediate layer comprising a surface layer comprising a surface layer, which is provided under the surface layer, 3 parts by weight of a hygroscopic resin including styrene-ethylene glycol acrylate, 3 parts by weight of a fungicide including a dermatan sulfate copolymer, and 1 part by weight of a weakly acidic material It is provided at the bottom, and includes a lower layer comprising 3 parts by weight of the graphene mesh, 2 parts by weight of the adhesive composition, and 2 parts by weight of monodecyl ether surrounding the adhesive composition.

Looking at each configuration, silicon alkoxide may be used as the binder, and the content of each composition used in the following protective film is based on 100 parts by weight of the binder. Next, titanium tetrachloride is a precursor of titanium dioxide, which is stirred with platinum ions, which will be described later, to reduce the energy gap between the conduction band and the balance band of titanium dioxide to produce platinum-titanium dioxide.

Therefore, platinum-titanium dioxide can create an active state not only in the ultraviolet region but also in the visible region, and in the active state, electrons and holes move to the surface and combine with oxygen and hydroxyl groups to form radicals, respectively, to form nitrogen oxides and organic halogen compounds The back can be removed. In addition, 12 parts by weight of titanium tetrachloride is included, and when used in less than 12 parts by weight, nitrogen oxides, organic halogen compounds, etc. cannot be effectively removed, and when used in excess of 12 parts by weight, it is difficult to form a narrow energy band gap. . Next, platinum ions are stirred with titanium tetrachloride to produce platinum-titanium dioxide, and can be obtained from chloroplatinic acid, etc., and the stirring process can be performed according to a conventional method. These platinum ions contain 0.3 parts by weight, and when used in less than 0.3 parts by weight, it is not possible to effectively reduce the energy band interval of platinum-titanium dioxide, and when used in excess of 0.3 parts by weight, it is not economical.

Next, the surface layer contains 10 parts by weight of calcium magnesium acetate, which is added to add hygroscopicity, and when used in less than 10 parts by weight, the moisture absorption effect is insignificant, and when used in excess of 10 parts by weight, during extrusion processing difficulties arise in

Next, the surface layer contains 5 parts by weight of loess powder, which is added to add a humidity control function and air purification function that emits a large amount of far-infrared rays and maintains comfortable humidity according to the surrounding humidity, 5 parts by weight When used in less than the above effect is insignificant, when used in excess of 5 parts by weight, there is no economic feasibility. And loess powder has very low deliquescent properties, so there is an advantage in that it is possible to minimize the delay of the photooxidation reaction due to moisture present on the surface in the process of performing the photooxidation reaction of the platinum-titanium dioxide.

Next, styrene-ethylene glycol acrylate is included as an absorbent resin for the intermediate layer. The reason why the water absorbent resin is provided is to prevent the above-described photo-oxidation reaction from being delayed due to moisture remaining in the surface layer due to moisture absorption, as described above. And 3 parts by weight of the water absorbent resin may be included, and when it exceeds 3 parts by weight, moisture is excessively collected, and when used in less than 3 parts by weight, the photooxidation reaction of the surface layer may be delayed.

Next, a dermatan sulfate copolymer is included as a disinfectant for the intermediate layer. Dermatan sulfate copolymers can bind and eliminate various bacterial and various viral proteins. This is included in order to prevent the proliferation of bacteria and the like by the aggregated moisture according to moisture absorption.

Next, as described above, the weakly acidic material is added to sterilize various bacteria and viruses that can proliferate by the moisture present in the intermediate layer. As an example of the weakly acidic material, hypochlorous acid (HOCl) may be used, and 1 part by weight of the weakly acidic material is preferably included.

Next, provided under the intermediate layer, looking at the lower layer comprising the graphene mesh and the adhesive composition, in the case of the graphene mesh, it can be obtained by growing graphene powder on the surface of the metal mesh, and the graphene mesh Since it has very high waterproof properties, it can completely suppress the penetration of moisture due to moisture absorption and maintain the adhesive force continuously. In addition, when a predetermined potential difference is generated in this lower layer by using a wettability control mechanism based on the interaction between the electrostatic force by the electric field applied to the liquid and the capillary force acting on the gap between the graphene mesh, the direction of the electric field is determined. Accordingly, water can be pushed to one side, so even when moisture has penetrated, the user can easily control it without removing the protective film. And the graphene mesh preferably includes 3 parts by weight, and when it exceeds 3 parts by weight, it is not economical, and when it is used in less than 3 parts by weight, it does not inhibit moisture penetration.

And the adhesive may include isobutylene and petroleum resin, and the adhesive is provided wrapped in monodecyl ether, so that the adhesive effect of the adhesive is not exerted before application, but after contact with asphalt, concrete or cement having an alkali atmosphere As the monodecyl ether softens or decomposes, the adhesive's effect can be exerted. And it is preferable that the adhesive contains 2 parts by weight, and the monodecyl ether contains 2 parts by weight.

6 is a view showing a double torsion spring manufactured according to an embodiment of the present invention.

That is, as shown in FIG. 6 , the double torsion spring 100 is manufactured through steps S1 to S6 .

Various modifications and changes to the present invention described above with reference to the accompanying drawings are possible by those skilled in the art, and such modifications and changes not limited through the claims should be construed as being included in the scope of the present invention.

1: Double torsion spring manufacturing device
10: feed roller 11: first feed roller
12: second conveying roller 13: rotating means
20: molding means 21: first molding part
22: second forming part 22-1: jig
23: support member 24: cutting member
30: heat treatment means 100: double torsion spring

Claims (4)

A supply step of supplying a circularly wound steel wire in a straight line;
a transfer step in which the steel wire is transferred;
A forming step in which the steel wire is pushed in a plurality of directions to form a double torsion spring shape;
Cutting step in which the molded spring is cut; and
A heat treatment step in which the cut spring is heat treated;
including,
In the conveying step, the steel wire is conveyed by a plurality of conveying rollers, and in the forming step, the steel wire is formed in the shape of the double torsion spring by a forming means,
Further comprising a coating step of coating a protective film on the surface of the heat-treated spring,
The protective film is provided under the surface layer, the surface layer comprising 12 parts by weight of titanium tetrachloride, 0.3 parts by weight of platinum ion, 10 parts by weight of calcium magnesium acetate, and 5 parts by weight of loess powder, based on 100 parts by weight of the binder, styrene-ethylene glycol acrylate 3 parts by weight of a hygroscopic resin, including 3 parts by weight of a bactericide containing a dermatan sulfate copolymer, and an intermediate layer containing 1 part by weight of a weakly acidic material, and provided under the intermediate layer, 3 parts by weight of a graphene mesh, 2 parts by weight of an adhesive composition and a lower layer comprising 2 parts by weight of monodecyl ether encapsulating the adhesive composition. The method according to claim 1,
The transfer roller includes a pair of first transfer rollers disposed on both sides of the steel wire, a pair of second transfer rollers disposed on upper and lower sides of the steel wire, and a rotating means for rotating the steel wire.
The method according to claim 1,
The forming means is a double torsion spring forming method comprising a first forming part installed on the lower side to form a double torsion shape of the steel wire by rotation and vertical movement.
4. The method according to claim 3,
The forming means is installed spaced apart from both sides of the first forming part, the double torsion spring forming method further comprising a second forming part sliding toward the steel wire to form a spring shape of the steel wire.

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