KR101682431B1 - Emblem and Emblem Manufacture Method Thereof - Google Patents

Abstract

Disclosed are an emblem distinguished by a pressing process on a stainless steel material by not using an existing method which depends on an injection process and a detailed manufacturing method for the emblem based on the pressing process. According to the present invention, the manufacturing method for an emblem comprises: a material obtaining step in which a processing material (10) is obtained by blanking stainless steel into a predefined shape through a pressing process; a rubber coating step in which a rubber member (20) is integrally formed into the stainless steel by performing a Nitrile-Butadiene Rubber (NBR) coating with one face of the processing material; and an adhesive application step in which an adhesive member (30) is applied on the one face of the processing material with the coated rubber member surface, wherein the rubber coating step implements combined drying by a combination of hot air and Infra-Red (IR) lamp or a combination of hot air and Medium wave Infra-Red (MIR) lamp on a relevant drying furnace in which rubber cross linking starts while generation of a pin hole or an air bubble on a surface of the rubber member is suppressed as the rubber coating step is sequentially performed in drying furnaces, each of which is set to a gradually increasing temperature.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emblem of a stainless steel material,

DISCLOSURE OF THE INVENTION The present invention discloses emblems and discloses different emblems by a pressing process for a stainless steel material, which is based on a pressing process. A more specific method of making an emblem is disclosed.

In general, an emblem is an emblem emblazoned with an image of a company or a group of figures, letters, symbols, or a combination thereof. The emblem is usually attached to the surface of a product manufactured by the company, Or advertising. Among them, the emblem applied to the automobile represents the brand name of the automobile manufacturer or the automobile, and is mounted on an engine hood, a trunk lid, a wheel cap, a gear knob, a radiator grill, and an airbag of an automobile.

In recent years, a new type of emblem has been required to meet the various needs of the automobile and the consumers. However, the manufacturing method is limited due to the limited use of the material, and thus the consumer does not meet all the requirements.

In other words, the conventional automobile emblem is formed by molding with a predetermined embossing shape in accordance with the mold design and then molding with chromium (Cr) plating so as to show the metal feeling on the emblem surface or spraying or printing from the back side of the synthetic resin injection Thereby forming a desired color base surface.

The manufacturing process of the conventional automobile emblem is relatively simple. However, the surface of the synthetic resin injection molding is made to have a desired color surface by independent processes on the back surface of the synthetic resin injection molding, and chrome plating or vacuum deposition , Which causes various problems in productivity.

Particularly, in the case of the conventional automobile emblem, since the method capable of highlighting a specific region or character in the form of a molded synthetic resin injection is limited to the plating or vacuum deposition method, it can not overcome the limitation of the expressive power. The texture of the metal or the non-ferrous metal can not be properly displayed, and the quality of the product deteriorates remarkably.

In addition, since the thickness of the synthetic resin injection molding constituting the emblem body must be maintained to be at least about 3 mm, which is the limit dimension required for injection, the thickness is thickened as a whole, and as a result, the function of the emblem can be expected at night There is no problem.

On the other hand, it is known to incorporate a metal compound or a cobalt compound in the rubber composition in order to smooth the adhesion of the metal reinforcement to the rubber, and these compounds are described in French Patent No. 2198830 and U.S. Patent No. 2912355.

However, the drawbacks of the above prior art are as follows.

The metal compound not only greatly changes the workability and performance of the vulcanizing composition but also significantly changes the resistance to heat and thermal oxidation and aging, and moreover, it is a fatal problem that the cost of incorporating the metal compound into the rubber composition is increased ≪ / RTI >

If the metal stiffener is of a different construction due to the very limited problems that can only be adhered to copper, zinc, brass or bronze surfaces only, the metal or alloy It is difficult to perform the metal coating on the stainless steel surface since it is necessary to coat the sub-coat (for example, nickel) generally before performing such coating. Furthermore, the adhesion properties of the resulting reinforcing materials are often insufficient, resulting in poor adhesion over time and even at high temperatures.

And the use of brass coatings formed by the electrical or chemical deposition of copper and zinc is well known and has the disadvantage of being more difficult to manufacture than the coatings described above.

In addition, U.S. Patent No. 4441946 and French Patent Application No. 2320974 disclose a method of contacting steel with a rubber composition by applying silane to the steel surface before contacting the composition.

Patent Registration No. 10-0814669 Patent Registration No. 10-0799768

DISCLOSURE Technical Problem The present invention has been made in order to more positively solve all of the above problems, and it is an object of the present invention to provide a satisfactory adhesive force for a stainless steel material while mass- It is an assignment.

Another object of the present invention is to provide an emblem manufacturing method different from the existing one in order to maintain the adhesive strength of a stainless steel material.

Another problem to be solved in the present invention is to achieve better crosslinking of the rubber due to the stepwise increase in temperature taking into consideration the thermal conductivity of stainless steel and rubber material.

In order to achieve the above object, the emblem of the rubber-coated stainless steel material proposed in the present invention and the construction method thereof are as follows.

delete

A material obtaining step of blanking the stainless steel in a predetermined shape by a pressing process to obtain the workpiece 10; A rubber coating step in which a rubber member 20 is integrally formed on a stainless steel by performing NBR (nitrile-butadiene rubber) coating on one surface of a workpiece; And an adhesive applying step of applying an adhesive member (30) to a surface of the rubber material coated on one surface of the workpiece, wherein the rubber coating step is sequentially performed in each drying oven set at a temperature which is stepwise increased, The composite drying is performed by combining hot air and an infrared (Infra-red) lamp or a combination of hot air and an MIR (Medium Wave Infra-red) lamp for a corresponding drying furnace in which rubber crosslinking is started while pinholes or bubbles are suppressed.

delete

In addition, the above rubber coating step is performed in 7 drying lobes in sequence and then rapid cooling is carried out. It is set at 50 ~ 70 ℃ and the stainless steel material and NBR are held for a certain time, A first drying furnace; A second drying furnace which is set at 60 to 80 캜 and preheating and drying the hot wind so that the NBR can react while maintaining the stainless steel material and the NBR for a predetermined time; A third drying furnace which is maintained at a temperature of 90 to 120 ° C. and which induces activation of NBR crosslinking by increasing the surface temperature of stainless steel by drying with hot air while maintaining the stainless steel material and NBR for a predetermined time; A fourth drying furnace which is maintained at a temperature of 120 to 150 ° C. and which induces activation of NBR crosslinking by increasing the surface temperature of stainless steel by drying with hot air while keeping the stainless steel material and NBR for a predetermined time; (6) drying furnace which maintains the set temperature of 180 ° C and induces the increase of thermal efficiency by mixing and drying the stainless steel material and NBR with hot air and IR (Infra-red) lamp for a certain time; And a seventh drying furnace where the stainless steel material and the NBR are maintained at a temperature of 200 DEG C and the heating efficiency is increased by combined drying with hot wind and MIR (Medium Wave Infra-red) lamp while maintaining the NBR for a predetermined time.

According to the present invention having the above configuration, it is possible to mass-produce quality emblems by a pressing process unlike the conventional method which is consistent with injection molding, and particularly, since stainless steel having adhesive strength is used as a target material, a differentiated and distinctive emblem It is effective.

In addition, in the present invention, the process of coating stainless steel with rubber such as NBR is sequentially performed in the first to seventh dryers differentiated from the conventional ones, and at the same time, the internal temperatures of the first to seventh drying furnaces are set to increase stepwise It is possible to prevent the occurrence of pinholes in the surface layer due to providing a sufficient time for the volatile impurities of the rubber material to volatilize and to secure the physical properties of the rubber more stably by setting the condition for each drying furnace .

In the first to seventh drying furnaces, a complex drying behavior is realized by various combinations of hot wind, IR (Infra-red) lamp and MIR (Medium wave Infra-red) lamps, The advantage of maximizing thermal efficiency is also expected, such as shorter production process time.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective exploded view of a part of a rubber-coated stainless steel material emblem according to a preferred embodiment of the present invention. FIG.
Fig. 2 is a floor chart schematically illustrating a process for implementing the emblem of Fig. 1; Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings, in which: FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. And throughout this specification, like reference numerals refer to like elements throughout.

The present invention discloses a technical idea relating to an emblem.

It is noted that the present invention relates to a more specific method of manufacturing an emblem based on a pressing process, in addition to proposing a differentiated emblem by a pressing process for a stainless steel material by removing from a conventional method depending on an injection process.

As shown in FIG. 1, the emblem proposed by the present invention does not depend on the injection process unlike the conventional one, and thus, it enables the adoption of a wider material without limiting to a specific material.

Until now, in manufacturing the emblem, the embossing has been carried out in the form of plastic molding with the engraved shape of the predetermined shape according to the mold design, and then chromium (Cr) plating or the spraying from the back side of the synthetic resin injection molding or the individual printing method And formed into a desired color base surface. In this method, the back surface of the preformed synthetic resin injection mold is provided with a desired color surface by an independent process, and a specific part is raised by chromium plating or vacuum deposition for the texture of metal or nonferrous metal. In addition, since the method capable of highlighting a specific part or letter in a state of being molded with a synthetic resin injection molding is limited to the plating or vacuum deposition method, it has not been able to overcome the limitation of the expressive power.

Accordingly, the present invention provides an emblem as a press process having advantages in terms of mass production rather than an injection process. By adopting stainless steel as a main material, the emblem of the same quality can be mass-produced repeatedly in less time at a lower cost do.

Above all, the present invention includes a process in which an emblem is provided using such stainless steel, and a predetermined process for a level of adhesive force to be held by the emblem is also included.

For this purpose, the emblem of the stainless steel material coated with the above rubber-coated material is composed of a working material 10 obtained by blanking stainless steel by a pressing process as shown in FIG. 1; A rubber member 20 for compensating for an adhesive member (absence) originating from steel, and an adhesive member 30 applied to one surface of the rubber member.

In addition, a method for manufacturing an emblem of a stainless steel material coated with a rubber on the upper side includes blanking the stainless steel in a predetermined shape by a pressing process to obtain a workpiece 10; A rubber coating step in which a rubber member 20 is integrally formed on a stainless steel by performing NBR (nitrile-butadiene rubber) coating on one surface of a workpiece; And an adhesive applying step of applying the adhesive member 30 to the surface of the rubber material coated on one surface of the workpiece.

At this time, the upper rubber coating step is sequentially performed in each drying oven set at a gradually rising temperature so that hot air and IR (Infra-red) lamp Or a combination of hot air and a MIR (Medium Wave Infra-red) lamp, which will be described in detail below with reference to the accompanying drawings.

In the present invention, by setting the specific conditions for activating the rubber bridge to be different from the conventional ones, not only the volatile impurities in the rubber are efficiently removed, but also a stable and stable drying and curing action based on the stepwise temperature rise And the technical idea of ensuring the physical properties of the rubber.

FIG. 2 shows a rubber coating method of a stainless steel material provided with a differentiated structure according to the present invention, and it is confirmed by a schematic floor chart that a desired level of coating treatment can be achieved by a series of sequential processes .

In order to achieve this, the rubber coating process is performed in seven drying lobes, followed by rapid cooling. It is maintained at 50 ~ 70 ℃, and the stainless steel material and NBR are held for a certain time. A first drying furnace; A second drying furnace which is set at 60 to 80 캜 and preheating and drying the hot wind so that the NBR can react while maintaining the stainless steel material and the NBR for a predetermined time; A third drying furnace which is maintained at a temperature of 90 to 120 ° C. and which induces activation of NBR crosslinking by increasing the surface temperature of stainless steel by drying with hot air while maintaining the stainless steel material and NBR for a predetermined time; A fourth drying furnace which is maintained at a temperature of 120 to 150 ° C. and which induces activation of NBR crosslinking by increasing the surface temperature of stainless steel by drying with hot air while keeping the stainless steel material and NBR for a predetermined time; (6) drying furnace which maintains the set temperature of 180 ° C and induces the increase of thermal efficiency by mixing and drying the stainless steel material and NBR with hot air and IR (Infra-red) lamp for a certain time; And a seventh drying furnace where the stainless steel material and the NBR are maintained at a temperature of 200 DEG C and the heating efficiency is increased by combined drying with hot wind and MIR (Medium Wave Infra-red) lamp while maintaining the NBR for a predetermined time.

The significance of such a configuration is to prevent the occurrence of bubbles due to a gradual increase in temperature in consideration of the thermal conductivity of stainless steel and rubber material, as well as to achieve better crosslinking of rubber.

In other words, in coating stainless steel with rubber such as NBR, it is intended to provide more stable property of rubber while preventing the occurrence of bubbles or other rubber bridge, by giving specific conditions different from the existing ones. The above-mentioned specific conditions will be described in detail below with reference to the related examples.

It is maintained at 50 ~ 70 ℃, preheated by hot air and dried before stainless steel material and NBR stay for a certain time, so that NBR can react,

It is set at 60 ~ 80 ℃ and preheated by hot air so that NBR can react while keeping stainless steel material and NBR for a certain time,

The temperature of stainless steel and NBR were maintained at 90 ~ 120 ℃, and the stainless steel was dried by hot air while keeping NBR for a certain time. The surface temperature of stainless steel was increased to induce NBR crosslinking,

The temperature of stainless steel and NBR were kept at 120 ~ 150 ℃ and dried with hot air while maintaining the NBR for a certain time. The surface temperature of stainless steel was increased to induce NBR crosslinking,

180 ° C, and the stainless steel material and the NBR are kept at the same temperature for a certain period of time, and then combined with the hot air and the IR (Infra-red)

180 ° C, and the stainless steel material and the NBR are kept at the same temperature for a certain period of time, and then combined with the hot air and the IR (Infra-red)

200 ° C, the stainless steel material and the NBR are kept for a certain time, combined with the hot air and the MIR (Medium Wave Infra-red)

In order to more firmly induce the surface hardness through rapid cooling after curing at the maximum temperature, stainless steel and NBR are rapidly cooled by water cooling or air cooling in the range of 10 ~ 20 ℃ to increase the surface hardness, Prevents foreign matter from being mixed.

Hereinafter, the embodiment further subdivides the rubber coating step for the stainless steel material, which is the core of the present invention, and includes all the drying steps before the cooling step.

Stainless steel material and NBR (nitrile-butadiene rubber) are sequentially placed in the first and second drying furnaces for a certain period of time.

At this time, in order to volatilize the impurities contained in the NBR, the internal temperature of the first drying furnace and the second drying furnace are maintained at 50 to 70 ° C and 60 to 80 ° C, respectively, and preheated and dried by hot air. Therefore, the generation of bubbles is prevented while securing the time for the NBR to react by the first and second drying passages.

The first drying furnace and the second drying furnace are sections for inducing volatilization of the impurities contained in the rubber. The temperature of the first drying furnace and the second drying furnace are limited to the above-mentioned range to prevent the rubber from boiling and failures It is for this reason.

That is, when the temperature is raised rapidly above the above-mentioned temperature, rubber epidermis may be clogged before volatilization of volatile impurities in the rubber, and pinholes may be generated in the surface layer. Therefore, preheating should be performed within the designated temperature range so as to prevent product failure.

The stainless steel material and NBR passed through the first and second drying furnaces are sequentially placed in the third drying furnace and the fourth drying furnace for a predetermined period of time.

At this time, the internal temperature of the third drying furnace and the fourth drying furnace are maintained at 90 to 120 ° C and 120 to 150 ° C, respectively, and dried by hot air. Therefore, the surface temperature of the stainless steel is increased to prevent the cold surface of the stainless steel from interfering with the NBR bridging.

From the third drying, the temperature is set at a temperature at which rubber cross-linking is initiated, thereby increasing the surface temperature of stainless steel, which is a base material, to give a condition that a more stable and smooth cross-linking action can be realized.

The stainless steel material and NBR passed through the third and fourth drying furnaces are sequentially placed in the fifth drying furnace and the sixth drying furnace for a predetermined period of time.

At this time, the inside and the outside of the fifth drying furnace and the sixth drying furnace are maintained at 180 ° C, respectively, and drying is carried out with hot air and an IR (Infra-red) lamp.

In order to maximize heat efficiency, the composite drying is carried out in the No. 5, 6 drying furnace, so that a satisfactory rubber bridging behavior can not be achieved depending on the hot wind which causes heat loss, To achieve the desired level of temperature rise.

Place the stainless steel material and NBR through the No. 5,6 drying furnace in the No. 7 drying furnace for a certain period of time.

At this time, the inside temperature of the seventh drying furnace is maintained at 200 ° C while drying with hot air and MIR (Medium Wave Infra-red) lamp.

The composite drying is carried out in the seventh drying furnace in order to improve the thermal efficiency in the same manner as the third drying step. The MIR (Medium Wave Infra-red) method, in which the concept of wavelength is added to the IR (Infra-red) The application of lamps actively induces stabilization of rubber properties.

The present embodiment proposes a related device for implementing the drying behavior.

To realize the drying behavior, horizontal drying and vertical drying are performed in parallel to maximize drying efficiency.

To this end, the horizontal drying unit includes a grid frame, a plurality of rollers sequentially arranged for one-directional conveyance in a space inside the grid frame, and a plurality of rollers arranged corresponding to each other by means of a grid frame and supplied with heat generated by the operation of the hot- And a housing for sealing the induction tube and the grid frame so as to be intercepted from the outside. The induction pipe is disposed at both ends of the lattice frame, and is connected to the heat pipe and the heating element. The discharge pipe is interposed between the inlet pipe and the outlet pipe. And a cover body is provided above the inlet pipe to minimize heat loss.

That is, in the horizontal drying unit, the hot air is continuously supplied to the discharge pipe of the induction pipe for the workpiece to be unidirectionally transported by the roller, and the drying operation is performed by the action of the hot air provided at the bottom of the workpiece.

The vertical drying unit includes: a drying frame; a plurality of rollers arranged one behind the other in order to induce one-directional conveyance while inducing an extension of the residence time; A plurality of drawing tubes for discharging heat applied from the heating body and the hot air as a workpiece, and a housing for sealing the drying frame so as to be blocked from the outside.

The vertical drying unit is a drying unit provided successively to the horizontal drying unit. The drying unit performs a drying process again for a predetermined drawing pipe arranged vertically alternately with respect to a target workpiece subjected to drying through a horizontally arranged induction pipe. At this time, And a structure in which hot air is provided to all of them.

Here, the term "heating" refers to a heat source, and may be defined as a carbon-carbon heater.

According to the present invention having the above configuration, it is possible to mass-produce quality emblems by a pressing process unlike the conventional method which is consistent with injection molding, and particularly, since stainless steel having adhesive strength is used as a target material, a differentiated and distinctive emblem It is effective. In addition, in the present invention, the process of coating stainless steel with rubber such as NBR is sequentially performed in the first to seventh dryers differentiated from the conventional ones, and at the same time, the internal temperatures of the first to seventh drying furnaces are set to increase stepwise It is possible to prevent the occurrence of pinholes in the surface layer due to providing a sufficient time for the volatile impurities of the rubber material to volatilize and to secure the physical properties of the rubber more stably by setting the condition for each drying furnace .

In the first to seventh drying furnaces, a complex drying behavior is realized by various combinations of hot wind, IR (Infra-red) lamp and MIR (Medium wave Infra-red) lamps, The advantage of maximizing thermal efficiency is also expected, such as shorter production process time.

10. Working material
20. Rubber member
30. Adhesive member

Claims (4)

delete A material obtaining step of blanking the stainless steel by a pressing process to obtain a workpiece 10;
A rubber coating step in which a rubber member 20 is integrated with stainless steel by performing NBR (nitrile-butadiene rubber) coating on one surface of a workpiece;
And an adhesive applying step of applying the adhesive member (30) to the surface of the rubber material coated on one surface of the workpiece,
The rubber coating step is sequentially carried out in each drying oven set at a gradually rising temperature so that hot air and IR (Infra-red) lamps A method of manufacturing an emblem of a rubber-coated stainless steel material, which comprises performing composite drying with a combination of hot air and a MIR (Medium Wave Infra-red) lamp.
delete 3. The method of claim 2,
The above rubber coating step is carried out sequentially in 7 places of drying furnace, then rapid cooling is carried out,
A first drying furnace which is set at 50 to 70 캜 and preheated and dried with hot air so that the NBR can react while keeping the stainless steel material and NBR for a predetermined time;
A second drying furnace which is set at 60 to 80 캜 and preheating and drying the hot wind so that the NBR can react while maintaining the stainless steel material and the NBR for a predetermined time;
A third drying furnace which is maintained at a temperature of 90 to 120 ° C. and which induces activation of NBR crosslinking by increasing the surface temperature of stainless steel by drying with hot air while maintaining the stainless steel material and NBR for a predetermined time;
A fourth drying furnace which is maintained at a temperature of 120-150 ° C. and which induces activation of NBR crosslinking by raising the surface temperature of stainless steel by drying with hot air while keeping the stainless steel material and NBR for a predetermined time;
(6) drying furnace which maintains the set temperature of 180 ° C and induces the increase of thermal efficiency by mixing and drying the stainless steel material and NBR with hot air and IR (Infra-red) lamp for a predetermined time;
A seventh drying furnace which is maintained at 200 ° C. and induces the heat efficiency to be increased by drying the hot-air and the MIR (Medium Wave Infra-red) lamp while maintaining the stainless steel material and the NBR for a predetermined time;
Wherein said rubber-coated stainless steel material is a rubber-coated emblem.

Images