KR20070063922A - Streamline shape accessory of mobile phone coupling loop and manufacturing method thereof - Google Patents

Abstract

A streamline shape accessory of a mobile phone coupling loop and a manufacturing method for the same are provided to prevent deterioration of productivity resulting from errors of forming by forming an aluminum linear material in a compressing method. The manufacturing method of a streamline shape accessory of a mobile phone coupling loop includes the steps of: a preparation step(S1) of extruding aluminum material into a linear material; a crush-forming step(S2) of forming and cutting a streamline shape head portion by crushing one end of the linear material into a mold; a pressing step(S3) of processing a loop recess by injecting the other end of the component obtained from the crush-forming step(S2) into a mold; buffing/barrel step(S4) of grinding corners of components; an anodizing step(S5) of forming an oxide film on the surface of the components; and an inspecting/forwarding step(S6).

Description

Streamline shape accessory of mobile phone coupling loop and manufacturing method

1 is a block diagram showing a state implementing the method of manufacturing a streamlined ornament according to the present invention.

Figure 2 is a process chart showing the manufacturing process of streamlined jewelry according to the present invention.

Figure 3 is a block diagram showing a streamlined jewelry produced through the manufacturing process of the present invention.

Explanation of symbols on the main parts of the drawings

10: extruder 20: mold

20a: mold 30: press

32: mold 32a: yinyang

40: buff wheel 40a: grinding particles

42: drum 42a: abrasive grain

42b: abrasive 50: reservoir

52: metal plate

The present invention relates to a streamlined ornament of a mobile phone connecting ring and a method for manufacturing the same, and more particularly, by forming an aluminum wire by a press-fit method and forming a ring groove for binding the connecting string by press working, the processability is excellent. Of course, the decrease in productivity due to poor molding, and particularly relates to a streamlined jewelry of the mobile phone connecting ring and its manufacturing method to prevent environmental pollution due to harmful substances generated during the plating process.

In recent years, due to the rapid development of industrialization, most of adult men and women have cell phones, and even students have cell phones as part of their lives. Accordingly, in the mobile phone manufacturing industry, in addition to changing the design of the mobile phone to meet the needs of a wider variety of consumers, a variety of linkages that make the appearance and aesthetics of the mobile phone stand out.

In this case, the link is mainly divided into a connection strap that is tied to the mobile phone, and the ornaments that are bound through the cap at one end of the connection strap, and the ornaments that determine the premise aesthetics of the connection ring is mainly made of metal such as zinc Thus, according to the prior art according to the manufacturing process of the jewelry in more detail as follows.

First, a casting process of melting zinc into a shape of a component (for example, jewelry), a trimming process of obtaining a plurality of parts integrally formed through a casting process, and a trimming process of parts separately. Cap and jewelry parts after buffing and barrel processing to remove surface, plating process to plate chromium on the surface formed through buffing and barrel process, and inspection process to inspect the finished parts. After the manufacturing process is completed, the assembly process of fastening the cap by fastening the connecting line to the jewelry is completed, the manufacturing process is completed, and the completed connection ring is inspected and shipped after packing.

In this case, as described above, the jewelry is mainly made of zinc casting in consideration of processability and durability, so the defective rate due to the non-injection of molten metal is usually generated in the range of 25 to 35% due to the nature of the casting process, as well as many cast parts of die casting. As the dog is molded integrally and needs to carry out the trimming process by hand, it is inevitable to increase the manufacturing cost due to the additional burden of labor costs due to the increase in the number of manpower.

In addition, the parts obtained by the trimming process are subjected to variance and surface finishing through a buffing and barrel process, and then plated to form a thin chromium layer on the surface of the parts to withstand a beautiful rust-free surface effect and abrasion. Go through the process. However, in the case of chromium plating, the defective rate due to plating failure is about 25 to 35%, so the cumulative defective rate including the defective rate of the casting process reaches more than half of the number of parts produced by zinc casting. It is true.

In addition, the chromium compound for chromium plating is classified into two types, trivalent and hexavalent, but trivalent chromium (Cr3 +) and hexavalent chromium (Cr6 +) are severely irritating and severely impair the mucous membrane of the respiratory tract. Although there is no plating method to cope with the human body that can irritate the mucous membranes and cause dermatitis such as edema and ulcers, as well as harmful to the environment, there is no plating method to cope with this, so it is not only the worker's grievances but also water, soil, and air. It is urgent to improve the manufacturing method of zinc casting parts because it is the main culprit of environmental pollution.

Accordingly, the present invention forms an aluminum wire by a press-fitting method and forms a ring groove for binding the connecting string by press working, which is excellent in workability and prevents productivity loss due to poor molding, in particular, during the plating process. The object of the present invention is to provide a streamlined jewelry and a method of manufacturing the mobile phone connecting ring to prevent environmental pollution due to harmful substances generated.

In order to achieve the above object, the present invention provides a streamlined ornament for a mobile phone connection ring: a step of preparing an aluminum material by using an extruder 10 to extrude the wire rod A having a uniform cross-sectional shape (S1). ; One end portion of the wire rod A obtained in the preparation step S1 is press-fitted into the inlet of the mold 20 provided with the streamlined mold 20a to form a streamlined head portion H1 and then cut at a predetermined point. Indentation molding process (S2); The other end of the component A1 obtained in the press-molding step S2 is put into the press 30, and the pressing step of plasticizing the ring groove S2 by the mold 32 having the yin-yang relief portion 32a formed therein. (S3); The part A2 obtained in the pressing step S3 is rubbed against the buff wheel 40 to which the abrasive grains 40a are fixed, thereby removing the variance, and the abrasive particles 42a are placed in the drum 42 together with water and oil. A buffing / barrel process (S4) for vibrating and rotating the drum 42 in a state in which an abrasive 42b such as or the like is alternatively applied to polish the corners and the surface of the component A2; The component A3 obtained by the buffing barrel process S4 is connected to the positive electrode of the voltage group V, and the metal plate 52 to which the negative electrode is connected is accommodated in the reservoir 50 containing the electrolyte solution. Anodizing step (S5) of putting the oxide into the storage tank 50 to form an oxide film on the surface thereof; And an inspection / shipping process (S6) for carrying out inspection of molding and glyph defects, surface roughness, etc. of the component A4 after performing the anodizing step (S5), and packaging and shipping them in a predetermined quantity. It is characterized by.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a state of implementing the manufacturing method of streamlined jewelry according to the present invention, Figure 2 is a process diagram showing a manufacturing process of streamlined jewelry according to the present invention, Figure 3 is produced through the manufacturing process of the present invention It is a block diagram which shows the streamlined jewelry.

The present invention relates to a method of manufacturing a streamlined accessory of a mobile phone connecting ring, but also through the optimal management process and at the same time to produce an excellent component even productivity.

As shown in Figure 1, the method of manufacturing a part of the connecting ring of the present invention will be described as follows.

A preliminary step (S1) of melting the aluminum material and extruding it into a wire rod (A) having a uniform cross-sectional shape, and forming one end of the wire rod (A) obtained by the preparatory process (S1), that is, the head portion (H1) in a streamlined fashion. Press-processing step S2 for cutting at a predetermined point and then pressing step S3 for plastic working ring groove S2 at the other end of the component A1 obtained in the press-molding step S2, and press The oxide film is formed on the surface of the component A2 obtained in the step S3, the buffing barrel process S4 for polishing the corners and the surface, and the surface of the component A3 obtained in the buffing barrel S4 step. After performing the anodizing step (S5) and the anodizing step (S5), the inspection / shipping step (S6) for inspecting and packing and shipping the parts (A4) is arranged in a series of continuous steps, each of which is sequentially made. This will be described in detail.

[Preparation Process: S1]

The first process of the present invention is a preparatory process (S1), by using an extruder 10 to melt the aluminum material is extruded into a wire (A) having a uniform cross-sectional shape.

In the preparation step (S1), the aluminum material is introduced into a smelter (not shown) to be melted, and then the solution is introduced into the extruder 10 to be extruded into the wire A. At this time, the wire A is press-fitted into the mold 20 through the press-molding process (S2) to be described later, the outer shape is bent into a predetermined shape, so that the cross-sectional shape is formed in the same manner in consideration of the cross-sectional shape of the ornament (H). .

And, as described above, the wire rod A continuously continuously extruded by the extruder 10 is immediately introduced into the press-molding process (S2), which is the next step of the preparation process (S1), bent in a streamline shape, such as a bobbin or a winding rod. The coil is wound around the storage member (B) and classified and stored according to the type of cross-sectional shape. The wire member (A) suitable for the shape of the jewelry (H) is selectively adopted and introduced into the indentation molding process (S2).

 Here, the aluminum used as the material of the ornament (H) is excellent in corrosion resistance because it forms a thin and dense oxide film on the surface in response to oxygen in the atmosphere, and easy plastic processing such as extrusion, rolling, forging, molding, etc. In particular, since it has various characteristics such as color, hardness, corrosion resistance, etc. due to surface treatment anodization, such as anodizing step (S3) described later, there is an advantage in excellent workability.

On the other hand, the preparation step (S1) is a step of preparing the aluminum material by extruding the wire (A) before substantially processing the ornament (H), the design change of the ornament (H) (for example, the cross-sectional shape is triangular, In order to respond flexibly to squares, circles, ellipses, etc., it is desirable to secure the wire A having various cross-sectional shapes in advance for each type.

[Indentation molding process: S2]

The process following the preparation step (S1) is the indentation molding step (S2) of the present invention, wherein one end of the wire rod (A) obtained in the preparation step (S1) is provided with an inlet of the mold (20) provided with a streamlined mold (20a). It press-inserts into the streamlined head part H1, and is cut | disconnected at the predetermined point.

In the press-molding step S2, the mold 20 having the mold 20a having the same shape as the shape of the head portion H1 (for example, a shape of?) Of the jewelry H is separated into upper and lower parts. It is provided with an opening and closing type, in which the mold 20a of the mold 20 is open to the outside so that the wire (A) is injected.

Here, when the wire rod A obtained in the preparation step S1 is press-fitted into the mold 20a of the mold 20 with one side open as shown in FIG. 2, the tip end portion of the wire rod A is pressed. At the same time as the vehicle 20a is entered, the shape of the mold 20a, that is, the outer shape, is bent into the shape of "?". Subsequently, the rear end of the wire rod A accommodated in the die 20a is cut at a predetermined position with the cutting machine C, and the mold 20 is opened to remove the part A1 bent in the shape of? Processing of the head portion H1 of H) is completed.

Then, the above-described press-molding step (S2), that is, the wire (A) having a predetermined cross-sectional shape is pressed into the mold 20a of the mold 20 to be bent into a streamlined head portion H1 shape, and then the rear end At the same time, the process of discharging the part A1 having completed the press-molding by discharging the mold 20 and opening the mold 20 is continuously performed.

On the other hand, the processing method of pressing / bending the wire rod A into the mold 20a of the mold 20 is suitable for the production of polygonal ornaments due to the principle of bending as the wire rod A enters the mold 20a. Instead, as shown by way of example in FIG. 3, it is effective in processing the ornament H having the shape of "?" Or similar streamlined head portion H1.

[Press process: S3]

The process following the press-molding step S2 is the press step S3 of the present invention, in which the other end of the component A1 obtained in the press-molding step S2 is put into the press machine 30, and the yin-yang part 32a ), The ring groove (S2) is plasticized by the mold 32 formed.

Pressing step (S3) is a step of plasticizing the ring groove (H2) by injecting the other end of the part (A1) of the head portion (H1) of the jewelry (H) is completed on the first end into the press machine (30) For example, the press machine 30 is provided with the same embossed portion 32a on one surface of the mold 32 as the shape of the ring groove H2 (for example, shown in the shape of a “T” in the pressing step S3 of FIG. 2). become.

Thus, the component A1 obtained in the press-molding process S2 is introduced into the press 30, and the other end of which the head portion H2 is not formed is seated on the mold 32, and then the start switch (not shown). If the upper mold 32 is lowered and the yin angular portion (32a) to press the component (A1) at a pressure of about 50 ~ 100kg to form a ring groove (H2). Subsequently, when the part A2 on which the processing of the ring groove H2 is completed is removed from the mold 32, the pressing step S3 is completed, and the ring groove H2 is repeatedly performed by repeatedly performing the pressing step S3. It is processed continuously.

On the other hand, in the press-molding step (S2), as well as the pressing process (S3), the defect rate is 1% due to the characteristics of the processing method of pressing or pressing the aluminum material having excellent workability into the mold 20, 32 to form a predetermined shape. Due to the lack of accuracy, more than 99% of the parts manufactured through the indentation molding process (S2) and the pressing process (S3) lead to the next process (for example, the buffing barrel process (S4) described later). Loss of productivity is prevented.

[Buffing Barrel Process: S4]

The step following the pressing step S3 is the buffing barrel step S4 of the present invention, wherein the component A2 obtained in the pressing step S3 is rubbed against the buff wheel 40 to which the grinding particles 40a are fixed. The bar is removed, the drum 42 is vibrated and rotated with the abrasive particles 42a in the drum 42, and the abrasive 42b such as water and oil is alternatively introduced, thereby vibrating and rotating the edge of the component A2. Polish the parts and surfaces.

The buffing / barrel process S4 removes the variance of the parts A2 on which the head portion H1 and the ring groove H2 have been processed, as well as through the press-molding process S2 and the pressing process S3. The corner portion is chamfered in a round shape, and is further subjected to an anodizing step (S5) described later to precisely polish the surface roughness to form an oxide film uniformly.

Here, the buffing barrel process S4 will be described in detail. First, the buffing operation includes alumina, silicon carbide, and the like, in which the component A2 obtained by the indentation molding process S2 and the pressing process S3 is crushed like a grinding wheel. It is a kind of flexible grinding in which grinding particles 40a such as chromium oxide are glued onto the flexible buff wheel 40, the buff wheel 40 is rotated at high speed, and the surfaces of the parts A2 are contacted and ground. Remove the bar of the part (A2) and grind the edge part smoothly and smoothly.

Then, the baring operation is performed following the buffing operation, and the barrel operation is a process of trimming chamfering and corners of the surface using abrasive particles 42a having polishing performance, and removing the variance and the edge portion in the buffing operation. After grinding, it is a job to smoothly grind the inner surface of the head portion H1 and the ring groove H2 or the recessed portion and the entire surface which are difficult to grind by buffing.

At this time, the barrel operation is a part (A2) obtained by the pressing step (S3) or the parts completed until the buffing operation is put into the drum (for example, the polishing drum) 42 together with the abrasive grains 42a in a large amount, and then water, After the abrasive 42b, such as oil or cleaning agent, is put in, the drum 42 is rotated forward, reverse, and up and down, the abrasive particles 42a are mixed with the parts A2 and rubbed with each other, thereby causing the whole of the parts A2. The surface is polished smoothly.

[Anodizing Process: S5]

The step following the buffing barrel step S4 is the anodizing step S5 of the present invention, in which the component A3 obtained in the buffing barrel step S4 is connected to the positive electrode of the voltmeter V, and the negative electrode is connected. Part A3 is placed in the reservoir 50 while the metal plate 52 is accommodated in the reservoir 50 containing the electrolyte solution, and the oxide film is formed on the surface thereof.

The anodizing step (S5) is a method of protecting the inside of the metal by making a thin oxide film on the surface of the metal, mainly having a high degree of reaction with oxygen such as Al, Ti, Mg and the like to have an oxide film on the surface by itself It is used only for metals, and most of them are commercially applied to aluminum (Al) materials.

Here, to specifically describe the anodizing step (S5), first, the metal plate 52 is installed in the reservoir 50 in which the electrolyte solution (for example, sulfuric acid, etc.) is stored, wherein the metal plate 52 of the voltage transformer (V) The connection is made to the cathode portion, and then the anode of the voltmeter V is connected to the component A3 obtained by the buffing barrel process S4 to complete the preparation. Subsequently, the output of the voltmeter V is adjusted to a desired voltage (for example, the degree of oxidation of the component A3 is determined by the voltage flowing in the electrolyte solution, and adjusted accordingly). The component A3 connected to the anode is connected to the electrolyte. The solution is immersed in the reservoir 50 containing the solution. At this time, the parts A3 are sequentially added to the plurality of reservoirs 50 containing the electrolyte solutions having different concentrations for a short time (for example, 5 seconds to 5 minutes) to sequentially oxidize the oxide film. When formed or immersed in a single reservoir 50 for a long time (for example, about 20 to 30 minutes) and then taken out, the component A3 acts as an anode in the electrolyte solution to promote oxidation of the surface, so that an oxide film having a uniform thickness This is artificially generated (shown in Figure 2 the process using a single reservoir 50).

As such, the anodizing step S5 corrodes the surface to form an oxide film so as to artificially produce a more uniformly formed oxide film on the surface of the component A3, thereby preventing the surface of the jewelry H from corrosion or external environment. It is possible to have a homogeneous resistance.

On the other hand, the thickness and color of the oxide film of the component A3 through the anodizing process (S5) is determined according to the intensity of the voltage, so after setting the voltage using useless pieces of aluminum before coloring the component (A3), It is preferable to perform the above-described anodizing step (S5).

[Inspection / Shipment Process: S6]

An anodizing step (S5), which is the final step of the present invention, is an inspection / shipping step (S6), after which the anodizing step (S5) is performed, and then the molding (A4) of the part (A4) and the inspection of the pattern defects and surface roughness are performed. It is packed and shipped in a certain quantity.

The inspection and shipment step (S6) is a component (A4) of the preparatory step (S1), the press molding step (S2), the press step (S3), the buffing barrel (S4), and the anodizing step (S5). Along with structural inspection such as shape and dimensions, physical property inspection such as uniformity of oxide film formed on the surface of part A4 is carried out. The part A4 is packaged in a large quantity in the dedicated packaging member P, and shipped.

In this way, the process from the aluminum wire (A) to processing the parts (A4), such as jewelry (H) to the shipment of the finished parts (A4) until the inspection, that is, the preparation step (S1), the press-molding process ( S2), the press process (S3), the buffing / barrel process (S4), the anodizing process (S5), and the inspection / unloading process (S6) are carried out in a series of continuous processes, at which time the preparation process (S1) and the press molding In the process of forming / molding the component A3 substantially, such as the process S2, the press process S3, the buffing barrel process S4, and the anodizing process S5, the workmanship is excellent and the jewelry ( Since the cumulative defect rate is less than 3% during the entire process of manufacturing H), the productivity is greatly improved.

The present invention is not limited to the embodiments described, and it is apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Or modified examples will belong to the claims of the present invention.

According to the above description, according to the present invention, by forming a ring groove for joining the connecting string by press molding as well as forming the aluminum wire by a press-fitting method, excellent workability is prevented and productivity decrease due to poor molding is prevented. Hazardous substances generated during the plating process will have a useful effect of preventing environmental pollution.

Claims (2)

In making streamlined accessories for cell phone links: A preparatory step (S1) of melting the aluminum material using the extruder 10 and extruding it into the wire rod A having a uniform cross-sectional shape (S1); One end portion of the wire rod A obtained in the preparation step S1 is press-fitted into the inlet of the mold 20 provided with the streamlined mold 20a to form a streamlined head portion H1 and then cut at a predetermined point. Indentation molding process (S2); The other end of the component A1 obtained in the press-molding step S2 is put into the press 30, and the pressing step of plasticizing the ring groove S2 by the mold 32 having the yin-yang relief portion 32a formed therein. (S3);  The part A2 obtained in the pressing step S3 is rubbed against the buff wheel 40 to which the abrasive grains 40a are fixed, thereby removing the variance, and the abrasive particles 42a are placed in the drum 42 together with water and oil. A buffing / barrel process (S4) for vibrating and rotating the drum 42 in a state in which an abrasive 42b such as or the like is alternatively applied to polish the corners and the surface of the component A2; The component A3 obtained by the buffing barrel process S4 is connected to the positive electrode of the voltage group V, and the metal plate 52 to which the negative electrode is connected is accommodated in the reservoir 50 containing the electrolyte solution. Anodizing step (S5) of putting the oxide into the storage tank 50 to form an oxide film on the surface thereof; And After the anodizing step (S5) to perform the inspection, such as molding and glyph defects, surface roughness, etc. of the part (A4), and packaged by a certain quantity to be shipped through the inspection / shipping step (S6); A method of manufacturing a streamlined ornament of a mobile phone link characterized by. Streamlined ornaments of a mobile phone connecting ring, characterized in that produced by the method of claim 1.

Images