KR101912762B1 - Imprinting method of product and product using the same - Google Patents

Abstract

The present invention relates to a method for surface stamping a product which enables a closed character to be processed without a bridge or other connecting parts in a double material structure such as an insert injection and a product manufactured using the method. A first member forming step of forming a first member having a fine engraved portion and a weave portion covering the engraved portion; Chemically surface-treating the second member contact surface of the first member; A second member insert injection step of inserting the first member into the metal mold and insert injection molding the second member to fill the imprint; And removing the glued portion so that the second member filled in the glued portion is exposed to form a character or a symbol.

Description

TECHNICAL FIELD The present invention relates to a method of marking a surface of a product and a product manufactured using the same.

The present invention relates to a method for surface stamping a product and a product manufactured using the same, and more particularly, to a method of stamping a closed character in a double material structure such as an insert injection, without requiring a bridge or other connecting parts A surface scoring method of a product, and a product manufactured using the same.

In general, among the structure of a double material that integrates products of different materials, for example, a character or symbol is engraved on a metal member such as an automobile start button or a window switch, and a translucent resin material flows therebetween, In the case of a product, a metal part to which a user's hand touches is excellent in durability because of its excellent abrasion resistance. In a relatively dark automobile interior or at night, a light emitted from a light emitting element is emitted by a user, It is widely used for elevator switch and various button type products as well as automobile field because it can be identified.

The products to which the conventional double structure is applied are generally made of a metal material and a resin material, and various characters or symbols may be engraved to form a space through which the resin material flows into the metal material.

However, the characters "A, B, D, O, P, Q, R", numbers "0, 6, 8, 9" , ",", ",", ",", "," And so on, which are closed in whole or in part, can not be floating in space from a spatial position while being stamped, A phenomenon may occur.

In order to solve these problems, conventionally, a small bridge or a connecting portion, which is partially opened to prevent a closed character or symbol from being closed at the time of engraving, is formed and the shape of the character or symbol is poor, It was used to change the shape so that only the shape was known.

However, in such a conventional solution, not only the form of characters or symbols can not be clearly expressed but also the size of the bridge or the connection portion is difficult to be reduced in a case of a small character or symbol, is not aesthetically beautiful, , And the recognition time is long.

On the other hand, there is a problem that a product defect rate is high, for example, an adhesive force between a insert material and an injection object made of different materials decreases structurally and peeling phenomenon easily occurs between the parts.

Disclosure of the Invention The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a gluing portion capable of maintaining the position of a temporarily closed portion until a closed portion of a character or symbol is exposed to a surface, After the injection, inserts can be removed so that letters and symbols can be displayed. This makes it possible to form letters and symbols that are clean and perfectly formed without any bridges or joints in the insert injection structure. By using chemical surface treatment, To improve the strength and durability of the product by improving the surface roughness of the product, and to provide a product manufactured using the method. However, these problems are exemplary and do not limit the scope of the present invention.

According to an aspect of the present invention, there is provided a method of surface sculpting a product, the method comprising: a first member forming step of forming a first member having an engraved portion having a character or symbol shape and an engraved portion covering the engraved portion; A chemical surface treatment step of chemically surface-treating the second member contact surface of the first member; A second member insert injection step of inserting the first member into the metal mold and insert injection molding the second member to fill the imprint; And removing the glued portion so that the second member filled in the glued portion is exposed to form a character or a symbol.

Further, according to the present invention, in the first member forming step, the first member includes at least one of an aluminum component, a zinc component and a combination thereof, and the engraving portion and the weaving portion are formed by die casting .

Further, according to the present invention, in the second member insert injection step, the second member may be made of a translucent resin material.

Further, according to the present invention, the melting point of the first member may be higher than the melting point of the second member.

Further, according to the present invention, the chemical surface treatment step may include: a first acidic degreasing step for primarily removing the metallic foreign substance; A first etching step of firstly etching the work surface; A second acidic degreasing step for secondarily removing metallic foreign substances; A second etching step of secondarily etching the work surface; A primary desmutting step for primarily removing the smut; A step of chemically forming fine irregular holes on the surface; A second desmutting step for secondarily removing the smut; And a drying step of drying the surface.

Further, according to the present invention, in the first member forming step, the weft attaching portion may be formed above the engraving portion indicating a character or symbol in a closed form in a character or symbol.

In addition, according to the present invention, in the step of removing the gluing portion, the gluing portion can be removed by hair line processing.

On the other hand, a product according to the idea of the present invention for solving the above-mentioned problems can be produced according to the method of any one of the first to eighth aspects.

According to some embodiments of the present invention as described above, it is possible to form a gluing portion capable of maintaining the position of the temporarily closed portion until the closed portion of the character or symbol is exposed to the surface, It is possible to form a clear and perfect letter or symbol with no bridges or joints in the insert injection structure by removing the gluing parts so that the letters or symbols can be displayed. By using the chemical surface treatment, It is possible to improve the strength and durability. Of course, the scope of the present invention is not limited by these effects.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an external perspective view showing an article made according to a method of surface scoring an article according to some embodiments of the present invention.
2 is an exploded perspective view of parts of the product of Fig. 1;
Figure 3 is a partially cutaway perspective view of the product of Figure 1;
FIGS. 4-7 are cross-sectional views that step-by-step illustrate the surface imprinting process of an article according to some embodiments of the present invention.
8 is a flow chart illustrating a method of surface scoring an article in accordance with some embodiments of the present invention.
Fig. 9 is a flowchart showing the chemical surface treatment step of Fig. 8 in more detail.
FIG. 10 is a graph showing the results of a bonding force test of a product manufactured using a surface scoring method of an article according to some embodiments of the present invention. FIG.

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

The embodiments of the present invention are described in order to more fully explain the present invention to those skilled in the art, and the following embodiments may be modified into various other forms, It is not limited to the embodiment. Rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the invention to those skilled in the art. In the drawings, the thickness and size of each layer are exaggerated for convenience and clarity of explanation.

It is to be understood that throughout the specification, when an element such as a film, region or substrate is referred to as being "on", "connected to", "laminated" or "coupled to" another element, It will be appreciated that elements may be directly "on", "connected", "laminated" or "coupled" to another element, or there may be other elements intervening therebetween. On the other hand, when one element is referred to as being "directly on", "directly connected", or "directly coupled" to another element, it is interpreted that there are no other components intervening therebetween do. Like numbers refer to like elements. As used herein, the term "and / or" includes any and all combinations of one or more of the listed items.

Although the terms first, second, etc. are used herein to describe various elements, components, regions, layers and / or portions, these members, components, regions, layers and / It is obvious that no. These terms are only used to distinguish one member, component, region, layer or section from another region, layer or section. Thus, a first member, component, region, layer or section described below may refer to a second member, component, region, layer or section without departing from the teachings of the present invention.

Also, relative terms such as "top" or "above" and "under" or "below" can be used herein to describe the relationship of certain elements to other elements as illustrated in the Figures. Relative terms are intended to include different orientations of the device in addition to those depicted in the Figures. For example, if the element is inverted in the figures, the elements depicted as being on the upper surface of the other elements will have a direction on the lower surface of the other elements. Thus, the example "top" may include both "under" and "top" directions depending on the particular orientation of the figure. If the elements are oriented in different directions (rotated 90 degrees with respect to the other direction), the relative descriptions used herein can be interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a," "an," and "the" include singular forms unless the context clearly dictates otherwise. Also, " comprise "and / or" comprising "when used herein should be interpreted as specifying the presence of stated shapes, numbers, steps, operations, elements, elements, and / And does not preclude the presence or addition of one or more other features, integers, operations, elements, elements, and / or groups.

Hereinafter, embodiments of the present invention will be described with reference to the drawings schematically showing ideal embodiments of the present invention. In the figures, for example, variations in the shape shown may be expected, depending on manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention should not be construed as limited to the particular shapes of the regions shown herein, but should include, for example, changes in shape resulting from manufacturing.

FIG. 1 is an external perspective view showing an article 100 manufactured according to a method of surface stamping of an article according to some embodiments of the present invention, FIG. 2 is an exploded perspective view of the article 100 of FIG. 1, 1 is a partially cutaway perspective view of the article 100 of FIG.

First, as shown in Figs. 1 to 3, an article 100 manufactured according to a method of surface stamping an article according to some embodiments of the present invention includes a first member 10 and a second member 20 ).

For example, the first member 10 may be made of a hard metal material having relatively high strength for durability, and a portion of the first member 10 may be formed of a letter C or an engraved portion 11 having a symbolic shape, Can be formed.

More specifically, for example, the first member 10 may include at least one of an aluminum component, a zinc component, and a combination thereof, and may be formed by die casting, When the second member 20, which will be described later, is insert-injection-molded, the spatula 12 is removed and exposed to the outside, Lt; / RTI >

Thus, for example, all of the letters "A, B, D, O, P, Q, R ", numbers" 0,6,8,9 ", Korean " The closed part can be connected by the gluing part 12 to temporarily hold the position in space while the part or the part of the closed type character or symbol is imprinted.

Therefore, it is possible to clearly express the shape of a character or a symbol without applying a conventional bridge or a connecting portion, which is partially opened to prevent a closed character or symbol from being closed at the time of stamping, It can be clearly formed, is aesthetically beautiful, improves the recognition rate of characters and symbols, and shortens the recognition time of the user.

1 to 3, the second member 20 is insert-molded by being filled with the engraved portion 11 of the first member 10 inserted in the metal mold. As shown in FIGS. 1 to 3, It may be made of a light transmitting resin material so as to form an optical path to guide light. The melting point of the second member 20 may be lower than the melting point of the first member 10 so that the second member 20 can be insert injection-molded into the first member 10.

Therefore, the first member 10 is a metal member of a product such as an automobile start button or a window switch, and may be a metal material having excellent wear resistance and durability because the user's hand is in contact with the second member (20) is a translucent resin material which flows into the space between the engraved portions (11) of the first member (10) and is insert-injected. In a room in a relatively dark vehicle or at night, when a user emits light from a light- It can be widely used for elevator switch and various button type products as well as in the automobile field since light passing through letters and symbols can be easily identified.

A rough surface may be formed by chemically surface-treating the second member contact surface 10a of the first member 10 so as to improve the adhesion between the first member 10 and the second member 20 . Therefore, the adhesion between the first member 10 and the second member 20 can be enhanced, and the fixing can be firmly performed.

The upper surface of the first member 10 may be formed with a cut line along the cutting line CL by a hair line. Therefore, the product can be upgraded by using the hairline-processed surface having a luxurious feeling, and a feeling of good feel to the user can be provided.

FIGS. 4-7 are cross-sectional views that step-by-step illustrate the surface imprinting process of an article according to some embodiments of the present invention.

As shown in FIGS. 4 to 7, the step of engraving the surface of the product according to some embodiments of the present invention will be described step by step. First, as shown in FIG. 4A, The first member 10 having the engraved portion 11 of the engaging portion 11 and the engaging portion 12 covering the engraved portion 11 can be molded.

At this time, the first member 10 may include at least one of an aluminum component, a zinc component, and a combination thereof, and the engraved portion 11 and the carpentry portion 12 may be formed by die casting .

In addition, the gluing portion 12 may be formed above the engraved portion 11 that represents the letter C or the symbol in the form of a closed letter or symbol.

4B, the second member contact surface 10a of the first member 10, that is, the second member contact surface 10a of the first member 10, that is, the first member 10 and the second member 20, A rough surface may be formed by chemically surface-treating various portions such as a portion indicated by an arrow in FIG.

Here, the chemical surface treatment method includes several degreasing, etching, and dismutting processes. For example, the chemical surface treatment method includes a primary acid degreasing process for primarily removing metallic foreign substances, a 1 < th > A second etching step for secondarily etching the work surface, a first desmutting step for first removing the smut, and a second desmutting step for first removing the smut, , A micro-irregular hole forming process for forming fine irregular holes on the surface chemically by using a surface treatment solution for a metal, a secondary desmutting process for removing the smect secondary and a drying process for drying the surface have.

However, the chemical surface treatment method is not limited thereto, and all the chemical surface treatment methods that selectively perform at least one of deaerating, etching, surface treatment and desmutting can be applied.

5, the first member 10 may be inserted into a mold, and the second member 20 may be insert injection-molded so that the engraved portion 11 is filled.

At this time, the second member 20 may be made of a translucent resin.

Then, as shown in FIG. 6, the glued portion 12 may be removed so that the second member 20 filled in the stamped portion 11 is exposed to form a letter C or a symbol.

At this time, the gluing portion 12 can be removed along the cutting line CL by hair line processing.

Therefore, as shown in Fig. 7, it is possible to reinforce the abrasion resistance of a portion of the product, such as an automobile start button or a window switch, which is in contact with a user's hand by using the first member 10, A light transmitting resin material which flows into the space between the engraved portions 11 of the first member 10 and is injected with an insert is used as a light transmitting resin material in which a user emits light from a light emitting element in a room inside a dark car or at night using the second member 20, It is possible to easily identify lights (see arrows in Fig. 7) passing through a perfect character or symbol, which is a resin material, and can be widely used not only in the automobile field but also in an elevator switch and various button products.

8 is a flow chart illustrating a method of surface scoring an article in accordance with some embodiments of the present invention.

As shown in FIGS. 1 to 8, a method of surface sculpting an article according to some embodiments of the present invention includes a step of engraving a character (C) (S2) for chemically surface-treating a second member contact surface of the first member; a second member forming step (S1) for forming a first member (10) having a covering gluing portion (12) , A second member insert injection step (S3) of inserting the first member (10) into the mold and insert injection molding the second member (20) so as to fill the imprinting part (11) (S4) for removing the gluing portion (12) so that the second member (20) filled in the second member (20) is exposed to form a letter (C) or a symbol.

Also, in the first member forming step S1, the first member 10 includes at least one of an aluminum component, a zinc component, and a combination thereof, and the engraved portion 11 and the carpels (12) can be molded by die casting.

Here, for example, when the thickness of the first member 10 is 1 mm to 1.2 mm, the thickness of the glued portion 12 may be 0.2 mm to 0.4 mm, and the thickness of the glued portion 12 The thickness may be 20 percent to 40 percent of the thickness of the first member 10.

Further, in the second member insert injection step (S3), the second member 20 may be made of a light-transmitting resin.

Fig. 9 is a flowchart showing the chemical surface treatment step of Fig. 8 in more detail.

9, the chemical surface treatment step S2 is a step for increasing the adhesion between the first member 10 and the second member 20, A primary acid etching step S22 for primary etching the work surface, a secondary acid degreasing step S23 for secondary removal of the metallic foreign matter, and a secondary acid etching step S23 for etching the work surface secondarily A first desmutting step S25 for first removing the smut, a fine irregular hole forming step S26 for chemically forming fine irregularities on the surface, A second desmutting step S27 for secondarily removing the smut and a drying step S28 for drying the surface.

Here, the degreasing step may be performed by immersing the first member 10 in an acidic degreasing solution containing acidic components such as inorganic acid, ianic acid, hydrochloric acid, sulfuric acid, nitric acid, abietic acid, The steps may be performed by immersing the first member 10 in an etching solution such as a nitrogen compound, an organic compound, an oxygen organic compound, a hydrofluoric acid compound, a chlorine compound, a hydrogen peroxide compound, etc., and the desmutting steps may include etching with phosphoric acid, ammonium, The first member 10 may be immersed in a reducing metal salt impurity, that is, a dismutating solution capable of removing the smut.

Accordingly, it is possible to form a uniform and fine uneven surface on the surface while undergoing a series of processes such as degreasing, etching, surface treatment, and dismutting, thereby greatly increasing the bonding force between members.

In addition, in the first member forming step S1, the gluing portion 12 may be formed above the engraving portion 11 indicating a character C or a symbol in a closed form in a character or symbol.

In addition, in step S4, the gluing part 12 may be removed along the cutting line CL by hairline processing.

Therefore, it is possible to form the gluing portion 12 capable of maintaining the position of the temporarily closed portion until the closed portion of the character or symbol is exposed to the surface, and then, after the insert is injected, Removal of the gluing portion 12 allows the insert injection structure to form a clean and complete letter or symbol without any bridges or joints.

FIG. 10 is a graph showing the results of a bonding force test of a product manufactured using a surface scoring method of an article according to some embodiments of the present invention. FIG.

10, it was confirmed that the average adhesive force of 26.78 Kgf was observed. The adhesive strength was found to be almost the same between the five cases, It was confirmed that not only the durability but also the uniformity of adhesion between products was excellent.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10: first member
10a: second member contact surface
11:
12: Weed attachment
20: second member
100: Products

Claims (8)

A first member forming step of forming a first member having an engraved portion with a character or symbol in a fine shape and a weave portion covering the engraved portion;
A chemical surface treatment step of chemically surface-treating the second member contact surface of the first member including the engraved portion;
A second member insert injection step of inserting the first member into the metal mold and insert injection molding the second member to fill the imprint; And
And removing the glued portion so that the second member filled in the glued portion is exposed to form a character or a symbol,
Wherein the chemical surface treatment step comprises:
A first acidic degreasing step for first removing metallic foreign substances;
A first etching step of firstly etching the work surface;
A second acidic degreasing step for secondarily removing metallic foreign substances;
A second etching step of secondarily etching the work surface;
A primary desmutting step for primarily removing the smut;
Chemically forming fine irregular holes on the surface;
A second desmutting step for secondarily removing the smut; And
A drying step of drying the surface;
Of the surface of the article. The method according to claim 1,
In the first member forming step,
Wherein the first member comprises at least one of an aluminum component, a zinc component, and a combination thereof, and wherein the engraving and the weaving are molded into a die cast. The method according to claim 1,
In the second member insert injection step,
Wherein the second member is a translucent resin material. The method according to claim 1,
Wherein the melting point of the first member is higher than the melting point of the second member. delete The method according to claim 1,
In the first member forming step,
Wherein the gluing portion is formed above an engraved portion that represents a character or symbol in the form of a closed letter or symbol. The method according to claim 1,
In the gluing step removal step,
Wherein the glue is removed by hair line processing. A product produced using the method of any one of claims 1, 2, 3, 4, 6 and 7.

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