KR101868976B1 - Explosion Proof Lighting Equipped Case Manufacturing System - Google Patents

Abstract

The present invention relates to a protective case manufacturing system for an explosion-proof ballast, in which a main body, a front cover and a rear cover are manufactured by extrusion and forging to improve durability, Thereby improving durability and durability, and shortening manufacturing time and manufacturing time, thereby enhancing overall product competitiveness.
To this end, the present invention comprises a forming step (S1) of forming a front cover and a rear cover, each of which is formed at both ends of the main body and the main body; A machining step S2 for machining the main body and the front and rear covers; A pressing step (S3) of forming at least one pressing section after fastening the front cover to one end of the main body; A cleaning step (S4) of removing foreign matter; Drying step (S5) of drying; A surface treatment step (S6) of performing surface treatment; A powder coating step (S7) for powder coating; And an assembling step (S8) of completing the manufacture of the protective case in which the stabilizer is built in the main body when the main body and the rear cover are coated with powder through the powder coating step (S7).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002]

The present invention relates to a protective case manufacturing system for an explosion-proof ballast, and more particularly, to a system for manufacturing an explosion-proof ballast protective case, and more particularly, The present invention relates to an explosion-proof ballast protective case manufacturing system for enhancing durability and life span while reducing manufacturing simplicity and manufacturing time, thereby enhancing overall product competitiveness.

Generally, the explosion-proof structure means a structure in which the gas intruded into the container of the electric device is not affected by the external gas even if the explosion occurs due to the flame or heat of the electric circuit inside.

Meanwhile, the International Electrotechnical Commission (IEC) and the National Fire Protection Association (NFPA) classify hazardous places into approximately zero, one, and two locations according to the hazardous conditions. The above-mentioned type 0 and type 1 places are always dangerous due to fire, explosion and heat generation, so electric appliances to be used have to have an explosion-proof structure.

In other words, electric appliances used in dangerous places such as factories, gas stations, vessels handling dangerous goods such as gas or chemical substances are legally required to use explosion-proof devices so that the devices do not become ignition sources for surrounding explosive gas.

Accordingly, the pressure-proof explosion-proof structure must have mechanical strength to withstand the explosion pressure inside the container, and the flame or hot gas generated by the explosion inside should not ignite the external gas through the joint portion of the container, The temperature should not reach the ignition temperature of the external gas.

In addition, explosion-proof is a structure that can withstand external shocks by inflow of air or inert gas to prevent flaming even if an explosive gas penetrates inside the apparatus. Such an explosion-proof lamp uses an incandescent lamp, a fluorescent lamp, and a three-wavelength lamp as a light source, but has a problem of high power consumption and short life span.

In addition, such explosion-proof lamps have a problem that if the light source and the ballast are not properly radiated, the life span is shortened due to overheating, which can cause a very dangerous situation.

Therefore, explosion-proofing using an LED as a light source has been proposed.

As shown in FIG. 1 and FIG. 2, a heat dissipation fin 111 is formed on the outside of the LED explosion-proof lamp of Korean Patent Laid-Open Publication No. 10-2015-80374, A lens 130 for transmitting a light source of the LED module 120 and an annular cover 130 for supporting the lens 130. The lens module 130 includes a main body 110, an LED module 120, The light emitting unit 100 and the mounting box 300 are connected to each other by a screw connection. The light emitting unit 100 includes a mounting base 320 and a mounting box 300 attached to the ceiling. A power supply pipe 200 in which electric wires are connected to the inside of the mounting box 300 and an inner space formed by square pillars so as to receive the ballast 500, And a ballast housing (400) arranged in the form of a ballast.

The ballast housing 400 is provided with a cylindrical inlet 420 through which the ballast 500 can enter and exit and a plurality of radiating fins 430 are arranged on the upper and lower surfaces of the ballast housing 400 in parallel with the cylindrical inlet 420, And are arranged in the longitudinal direction.

The cylindrical inlet 420 of the ballast housing 400 is screwed to the cylindrical inlet 420 with a ballast housing cap 410 having a thread on the inner circumferential surface and a thread on the outer circumferential surface.

A plurality of protrusions 411 are formed on one surface of the ballast housing 400 at radially equally spaced intervals to prevent the ballast housing cap 410 from sliding on the hand when engaging and disassembling the ballast housing cap 420 do.

The ballast housing cap 410 may be formed with a larger diameter rim that forms a step with the formed threads to maintain airtightness when coupled with the cylindrical inlet 420 and additionally the cylindrical inlet 420 and the ballast housing cap 410 And a screw is fixed to the cylindrical inlet 420 through the ballast housing cap 410 to prevent loosening of the joint due to vibration or the like.

However, a conventional ballast housing or ballast protection case (hereinafter, referred to as a 'protective case') has been manufactured mainly by casting because of its structural specificity and difficult machining. In this case, Brittleness).

In addition, since the protective case is manufactured by the casting method, it takes a long time to manufacture and there is a problem that the manufacturing cost is increased according to the post-processing.

Korean Patent Publication No. 10-1280963 (Announcement of Mar. 23, 2013) Korean Patent Laid-Open Publication No. 10-2015-80374 (published on Jul. 09, 2015) Korean Patent Publication No. 10-1625160 (published on May 27, 2016)

It is an object of the present invention to overcome the above-mentioned problems, and it is an object of the present invention to improve the durability by manufacturing the main body, the front cover and the rear cover by extrusion and forging, The present invention provides a protective system for explosion-proof ballast protection system which can easily improve the durability and service life while shortening manufacturing time and manufacturing time, thereby enhancing product competitiveness as a whole.

According to an aspect of the present invention, there is provided a manufacturing system for a protective case for a stabilizer for an explosion-proof lamp, the protective system comprising: And a rear cover, wherein the body is formed by an extrusion method, and the front and rear covers are formed in a forging manner; Wherein when the main body and the front and rear covers are completely formed through the molding step, first and second female threaded portions are formed on both ends of the main body, a rear end portion is formed at one end of the main body having the second female threaded portion, The cover forming a thread on the outer periphery of the first male threaded portion and the projecting portion, the rear cover machining the second male threaded portion and the tool insertion groove into a tongue; Wherein when the main body, the front cover, and the rear cover are machined through the machining step, the front cover is fastened to one end of the main body, and then the front cover is firmly fixed to the main body, A pressing step of forming a pressing section; A cleaning step of removing foreign matter adsorbed or buried in each of the main body and the rear cover including the front cover through a cleaning process when at least one compression section is formed between the main body and the front cover through the compression step; A drying step of drying for 1 to 3 hours by hot air at 60 ° C to 150 ° C to remove washing water remaining on the main body and the rear cover after the washing process for the main body and the rear cover is completed through the washing step; A surface treatment step of performing surface treatment on the main body and the rear cover when drying of the main body and the rear cover is completed through the drying step; A powder coating step of coating the rear cover on the other end of the main body after the surface treatment of the main body and the rear cover is completed through the surface treatment step; And a step of inserting a ballast into the main body after disassembling the rear cover fastened to the other end of the main body when powder coating on the main body and the rear cover is completed through the powder coating step, And assembling the protective case with the stabilizer in the main body by tightening the rear cover to the other end of the main body after inserting the sealing ring into the main body.

In the present invention, in the machining step, the post-machining portion of the main body includes a rounded rounding process of a predetermined size at one end of the main body, and a step in which the seal ring is seated in the rounding; It is preferable that the surface treatment step is a chromate treatment so as to exhibit anticorrosive performance.

According to the present invention, the main body, the front cover, and the rear cover are manufactured by extrusion and forging to improve durability, as well as being prevented from being easily corroded by external environment through washing, surface treatment and powder coating, And the use life is greatly improved, the manufacturing simplification and the manufacturing time are shortened, and the product competitiveness is strengthened as a whole.

1 is an exploded perspective view showing an LED explosion-proof lamp as an example of the related art.
Fig. 2 is a perspective view of the assembled state of Fig. 1; Fig.
3 is an exploded perspective view of the protective case according to the present invention.
4 is a sectional view of a protective case according to the present invention;
5 is a view showing a manufacturing process of a protective case according to the present invention.

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

As shown in FIGS. 3 and 4, the protective case 10 of the present invention has a built-in SMPS or ballast (hereinafter referred to as a ballast) inside the ballast, and supports the ballast to be connected to one side of the mounting box And an explosion-proof performance.

The protective case 10 includes a main body 110 and front and rear covers 120 and 130 fastened to both ends of the main body 110.

The main body 110 is formed in the shape of a hollow tube having a space in which a stabilizer is seated.

A radiating fin 112 having a predetermined height is formed on an outer circumferential surface of the main body 110.

The plurality of radiating fins 112 are radially formed to quickly dissipate the heat radiated from the ballast configured in the main body 110.

First and second female threaded portions 114 and 116 are formed on inner circumferential surfaces of both ends of the main body 110 so that the front and rear covers 120 and 130 can be fastened.

A sealing ring 140 is formed at one end of the main body 110 where the second female screw portion 116 is formed to improve the fixing and sealing force of the main body 110 and the rear cover 130, And the post-study unit 118 is configured to perform the function.

The rear end portion 118 includes a rounding surface 1182 for surface-treating a predetermined size of the inside of the body 110 at one end thereof and a rounding surface 1182 for sealing the end portion of the rounding ring 140 And a step 1184 formed to have a space.

Accordingly, the sealing ring 140 and the rear cover 130 are stably and hermetically fixed to the main body 110 through the rear guard 118, thereby exhibiting an explosion-proof performance.

In addition, the main body 110 is integrally molded by an extrusion method to improve performance such as durability.

The front cover 120 is fastened to one end of the main body 110 to seal the main body 110, and supports the main body 110 to be connected to a mounting box such as explosion-proof.

The front cover 120 has a first male screw portion 122 formed at one end thereof to be fastened to the first female screw portion 114 of the main body 110 and has a predetermined length protruded from the other end to be fastened to one side of the explosion- A protrusion 124 is formed.

A male threaded portion is formed on the outer circumference of the protruding portion 124 so that it can be fastened to one side such as explosion.

A through hole 126 is formed at the center of the front cover 120 so as to pass through the through hole 126 to form a passage through which the electric wire or the like between the ballast and the explosion-proof is inserted or removed through the through hole 126.

The rear cover 130 is fastened to the other end of the main body 110, and functions to insert and seal the ballast inside the main body 110.

The rear cover 130 has a second male screw portion 132 formed at one end thereof to be fastened to the second female screw portion 116 of the main body 110 and is firmly fastened at the other end of the main body 110 A tool insertion groove 134 having a predetermined depth is formed.

Also, the front and rear covers 120 and 130 are manufactured by a forging process to improve durability and the like.

A manufacturing system of the explosion-proof ballast protective case constructed as described above will be described below.

As shown in Fig. 5, the manufacturing system of the present invention includes a forming step S1, a machining step S2, a pressing step S3, a cleaning step S4, a drying step S5, A surface treatment step S6, a powder coating step S7, and an assembling step S8.

The molding step (S1) is a step of molding the main body, the front and rear covers according to the molding method.

That is, the main body 110 is formed by an extrusion method, and the front and rear covers 120 and 130 are formed by forging.

The machining step S2 carries out machining for assembling the main body and the front and rear covers, respectively, when the main body and the front and rear covers are formed through the forming step S1.

That is, first and second female threaded portions 114 and 116 having a certain depth are formed on both ends of the main body 110, and a rear end stop 118 is formed on the second female threaded portion 116 side Processing is performed.

The front cover 120 is formed with a first male thread 122 and a male thread on the outer circumference of the protrusion 124.

In addition, the rear cover 130 is formed with a second male screw portion 132 and a tool insertion groove 134 having a predetermined depth at the other end.

When the main body and the front and rear covers are completely machined through the machining step (S2), the front cover is fastened to one end of the main body, and then, by pressing, pressing or melting, So that the front cover is fixed at one end.

The front cover 120 is fixed to one end of the main body 110 by fastening the first male threaded portion 122 of the front cover 120 through the first female threaded portion 114 of the main body 110 State.

The front cover 120 is firmly fixed to the main body 110 by pressing the side surfaces of the main body 110 and the front cover 120 in a press-contact manner.

In this case, the press-bonding method forms a plurality of pressing sections at regular intervals along the radial form of the main body 110 and the front cover 120.

The pressing section is not limited to a pressing method using a press, but a press fitting method for inserting a fin or a pressing method using a groove process can be used.

In addition, the present invention is not limited to the press-fitting method, and any method can be used as long as the front cover can be firmly fixed to the body.

For example, a method of melting and fixing by a welding method or applying and fixing an adhesive may be variously used.

In the cleaning step S4, when the front cover is fixed to one end of the main body through the pressing step S3, the main body including the front cover and the rear cover are cleaned through the cleaning device.

In this case, the main body and the rear cover are cleaned by a cleaning process through a flush or mechanical parts dedicated cleaning device, thereby removing foreign substances or oil adsorbed on the main body and the rear cover.

In the drying step (S5), when the main body and the rear cover are cleaned through the cleaning step (S4), the washing water and the like remaining on the main body and the rear cover are completely dried.

In this case, the drying is performed for 1 to 3 hours by hot air at 60 ° C to 150 ° C.

In the surface treatment step S6, when the main body and the rear cover are completely dried through the drying step S5, the surface of each of the main body and the rear cover is coated with a coating to improve the functionality such as rust prevention.

In this case, the surface treatment is preferably a chromate treatment.

The chromate treatment is a treatment method in which an article is put in a solution containing chromic acid or dichromate as a main component to coat the antirust film.

In the powder coating step S7, when the surface treatment is completed on each of the main body and the rear cover through the surface treatment step S6, the rear cover is fastened to the other end of the main body, And then the powder coating process is carried out.

In this case, the state of fastening the rear cover to the main body is a state in which the operator fastens the rear cover to the main body and is fastened with a force without using a separate tool so that, after the powder coating is completed, So that it can be easily separated.

In addition, if the back cover is fastened to the main body before powder coating, if the main body and the rear cover are separated from each other and the powder coating is performed, it is possible to have a sense of heterogeneity due to the difference in color after assembly, There is a problem that the powder coating is excessively drawn into the inner space through one end, resulting in an increase in the cost of the coating.

In the assembling step S8, after powder coating is completed on the main body and the rear cover through the powder coating step S7, the ballast is inserted into the main body, and the other end of the main body is firmly assembled to the ballast, The assembled protection case is assembled to an explosion proof or the like.

That is, in the powder coating step S7, the rear cover 130 fastened to the other end of the main body 110 is detached.

After the stabilizer is inserted into the main body 110, electric wires drawn out from the stabilizer are drawn out to the outside through the through hole 126 of the front cover 120 fixed to one end of the main body 110 .

The sealing ring 140 is inserted into the step 1184 formed at the other end of the main body 110 and then the rear cover 130 is fastened to the other end of the main body 110.

At this time, the rear cover 130 can be firmly fixed to the main body 110 through a tool insertion groove 134 formed at one end of the rear cover 130.

When the rear cover 130 is fastened to the other end of the main body 110, the main cover 110 is attached to the main cover 110 by the sealing ring 140 formed between the main body 110 and the rear cover 130 130 are firmly closed to maintain the explosion-proof performance.

Therefore, the explosion-proof ballast case manufactured through the above-described manufacturing system is manufactured by extrusion and forging instead of casting which is weak in brittleness, thereby improving the durability. In addition, through the cleaning, the surface treatment and the powder coating, By easily preventing corrosion by external environment, durability and service life are greatly improved, and manufacturing simplification and manufacturing time are shortened, thereby enhancing product competitiveness as a whole.

The above description is only one embodiment for implementing the explosion-proof ballast protective case manufacturing system, and the present invention is not limited to the above-described embodiment. It will be understood by those skilled in the art that various changes may be made without departing from the spirit of the invention.

10: Protective case 110: Body
112: radiating fin 114: first female screw portion
116: second female thread portion 118:
1182: Rounding 1184:
120: front cover 122: first male thread
124: protrusion 126: through hole
130: rear cover 132: second male thread portion
134: tool insertion groove 140: sealing ring

Claims (2)

A protection system for a protective case for an explosion-proof lamp, which is configured to protect a ballast constituted by an explosion-proof or the like and to exhibit explosion-proof performance,
A forming step (S1) of forming a front and a rear cover, each of which is formed at both ends of the main body and the main body, the main body being formed by an extrusion method, and the front and rear covers being formed by forging;
When the main body and the front and rear covers are completely formed through the molding step S1, first and second female threaded portions are formed at both ends of the body, and a post-processing portion is formed at one end of the body having the second female threaded portion A machining step (S2) of forming a first male threaded portion and a threaded portion on the outer periphery of the projecting portion, and the rear cover forming a second male threaded portion and a tool insertion groove;
After machining the main body, the front cover and the rear cover, respectively, through the machining step (S2), the front cover is firmly fixed to the main body after the front cover is fastened to one end of the main body A pressing step (S3) of forming at least one pressing section;
A cleaning step of removing at least one compression zone between the main body and the front cover through the compression step S3 to remove foreign matter adhered to the main body and the rear cover including the front cover through a cleaning process S4);
After completion of the washing process with respect to the main body and the rear cover through the washing step (S4), drying is performed in a condition of 1 to 3 hours by hot air at 60 to 150 DEG C to remove washing water remaining in the main body and the rear cover (S5);
A surface treatment step (S6) of performing surface treatment on the main body and the rear cover when drying of the main body and the rear cover is completed through the drying step (S5);
A powder coating step (S7) of performing powder coating after the rear cover is joined to the other end of the body when the surface treatment of the body and the rear cover is completed through the surface treatment step (S6); And
When powder coating on the main body and the rear cover is completed through the powder coating step S7, the rear cover fastened to the other end of the main body is dismantled, the stabilizer is inserted into the main body, An assembling step (S8) of inserting a sealing ring into the formed step and fastening the rear cover to the other end of the body, thereby completing the manufacture of the protective case with the stabilizer incorporated in the body;
Wherein the protective case is made of a synthetic resin.
The method according to claim 1,
In the machining step S2, the post-machining portion of the main body includes a rounded rounding process of a predetermined size at one end of the main body, and a step in which the seal ring can be seated in the rounding process;
The surface treatment step (S6) may include a chromate treatment to exhibit rust-inhibitive performance;
Wherein the protective case is made of a plastic material.

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