KR101858367B1 - Mold preheating apparatus having near-infrared ray heater - Google Patents

Abstract

A mold preheating apparatus having a near-infrared ray heater according to the present invention comprises: a heating module (100) arranged to be able to enter the inside of an upper and lower portion mold (10); and a moving module (200) allowing the heating module (100) to be movable to the upper and lower portion mold, wherein the heating module (100) comprises: a plurality of infrared ray releasing lamps (110); a reflection portion (120) arranged in a shape of covering one side area of the infrared ray releasing lamps (110); a lamp protection plate (130) arranged on the reflection portion (120); and a cooling channel (140) formed in the reflection portion (120), wherein the heating module (100) is arranged in an opposed state within the upper and lower portion mold (100).

Description

[0001] The present invention relates to a mold preheating apparatus having a near-

The present invention relates to a mold preheating apparatus having a near infrared ray heater, and more particularly, it relates to a mold preheating apparatus having a near infrared ray heater, in which strong radiative energy of a near infrared ray heater through a halogen lamp is concentrated on a mold region requiring preheating through a reflecting portion, The present invention relates to a mold preheating apparatus having a near-infrared heater that provides a device having a cooling channel for cooling the reflector.

Conventionally, when producing a product through various molds including a hot forging mold, there is a restriction condition that a normal product should be produced at a proper molding temperature. Since a mold having a temperature lower than a proper molding temperature due to being shut down for a long time, It should be started later.

If a product is produced in a state where the mold temperature is lower than the proper temperature, many molding defects may occur. Since most of the hot forming dies have preheating means for preheating the dies to a proper temperature before starting operation do.

The conventional preheating technique for the mold has a problem that since the heaters of the preheating means are preheated in a state in which they are not in contact with the molds, the heat transfer efficiency is deteriorated and the molds can not be raised to the desired preheat temperature in a short time.

As a conventional document which discloses a device for preheating in connection with a mold apparatus, there are disclosed in Korean Patent Laid-open Nos. 10-2015-0079024 (2015.07.08) and Korean Patent No. 10-1507338 ) Can be referred to.

(Patent Document 1) KR10-2015-0079024 A

(Patent Document 2) KR10-1507338 B

SUMMARY OF THE INVENTION The present invention has been made in an effort to solve the above-described problems, and it is an object of the present invention to provide a method and apparatus for preheating a mold by concentrating the strong radiant energy of a near infrared ray heater through a halogen lamp on a mold region requiring preheating through a reflector, It is an object to provide a mold preheating apparatus having a near-infrared heater that provides a structure with a cooling channel for cooling the part.

In addition, the present invention relates to a heater case, which is movable by utilizing a telescopic slide or the like, in order to preheat a mold and prevent contamination of a heating module, It is an object of the present invention to provide a mold preheating apparatus having a structure in which a mold is quickly inserted into a heater case to be slid back and stored during non-preheating time during molding.

The present invention also provides a method for controlling the temperature of a mold and a mold independently, and in a case where it is necessary to precisely control the temperature independently in the horizontal direction as in a multi-stage molding, a plurality of zones, It is an object of the present invention to provide a mold preheating apparatus capable of independently controlling the temperature of a halogen lamp.

According to an aspect of the present invention, there is provided a mold preheating apparatus having a near infrared ray heater, including: a heating module (100) disposed in and out of the upper and lower molds (10); And a moving module (200) for moving the heating module (100) to upper and lower mold sides, the heating module (100) comprising: a plurality of infrared emitting lamps (110); A reflection unit 120 disposed to surround one side of the plurality of infrared ray emission lamps 110; A lamp protection plate 130 disposed on the reflective portion 120; And a cooling channel 140 formed in the reflection part 120. The heating module 100 is disposed symmetrically between the upper and lower molds 10. [

The heating module 100 has a configuration in which a plurality of molds 10 are provided so as to be independently temperature-controlled on a plurality of dies 10 arranged continuously along the horizontal direction.

The moving module 200 includes a heater case 210 for sliding the heating module 100 into and out of the upper and lower molds 10, A vertical drive part 220 for vertically moving the heater case 210; And a movable frame part 230 disposed below the up and down driving part 220.

The lamp protection plate 130 is a quartz plate or a heat resistant glass plate.

The heater case 210 enables the sliding movement of the heating module 100 using a telescopic actuator system.

The reflective portion 120 is formed on the rear surface of the infrared ray emission lamp 110 in a coating manner.

The wiper disposed on the entrance of the heater case 210 cleans the lamp protection plate 130 when the heating module 100 enters and exits the interior of the heater case 210.

The mold preheating apparatus having the near infrared ray heater according to the present invention concentrates the strong radiant energy of the near infrared ray heater through the halogen lamp on the mold region requiring the preheating through the reflection unit to precisely preheat the mold, A cooling channel is provided for cooling the reflector.

Further, the present invention provides a structure in which the heater body is inserted into the heater case in the heater case for sliding the mold into the mold, and then inserted and stored in the heater case at a non-preheating time during the molding operation .

Further, the present invention utilizes a telescopic slide and an actuator to allow free movement of the heater body when there is a restriction on the installation space on the spot.

In addition, in order to prevent the contamination of the dust, the release agent and the like in consideration of the characteristics of the near infrared ray heater susceptible to contamination, the present invention separately disposes a quartz plate or the like for protecting the heater on the reflection portion. In addition, the heater case itself is also a structure necessary to protect the heater body from external contamination.

FIG. 1 is a view showing a mold preheating apparatus having a near-infrared heater according to the present invention as viewed from above.
FIG. 2 is a view showing an internal lamination structure of a mold preheating apparatus having a near-infrared heater according to the present invention.
FIG. 3 is a side view of a mold preheating apparatus having a near-infrared heater according to the present invention.
FIG. 4 shows a structure in which a mold preheating apparatus having a near-infrared heater according to the present invention is movably arranged in a heater case so as to be applicable to various molds.
5 shows an example of a rail structure of a multi-stage telescopic sliding structure disposed on both sides of a heating module.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but is capable of other various forms of implementation, and that these embodiments are provided so that this disclosure will be thorough and complete, It is provided to let you know completely. Wherein like reference numerals refer to like elements throughout.

It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be "connected," "coupled," or "connected. &Quot;

Hereinafter, the structure and function of a mold preheating apparatus having a near-infrared heater according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5. FIG.

The mold preheating apparatus having a near infrared ray heater includes a heating module 100 arranged to be able to move into and out of the upper and lower molds 10 and a moving module 200 for allowing the heating module 100 to move toward the upper and lower molds 10, .

The heating module 100 includes a plurality of infrared ray emitting lamps 110, a reflector 120 arranged to surround one side of the plurality of infrared ray emitting lamps 110, A protection plate 130, a cooling channel 140 formed in the reflection unit 120, and a temperature sensing sensor 150 disposed between the plurality of infrared emission lamps 110.

The heating module 100 is disposed symmetrically between the upper and lower dies 10. That is, a structure in which the lamp protection plate 130, the infrared ray emitting lamp 110, and the reflection unit 120 having the cooling channel 140 are stacked in this order from the upper end to the lower end of the upper metal mold 12 And a reflector 120 having a lamp protecting plate 130, an infrared ray emitting lamp 110 and a cooling channel 140 in the order from the bottom to the top in the upper end of the lower mold 14 .

Meanwhile, the upper and lower molds 10 may have a structure in which a plurality of unit molds are continuous along the horizontal direction, and a separate heating module is installed in each of the plurality of unit molds 12, Lt; / RTI >

The moving module 200 includes a heater case 210 for allowing the heating module to slide inside and outside the upper and lower molds, a vertical driving part 220 for vertically moving the heater case 210, And a moving frame part 230 to be disposed.

The temperatures of the plurality of infrared emitting lamps 110 are independently controlled.

The mold preheating apparatus according to the present invention independently controls the temperatures of the mold halves (12) and the mold halves (14).

Specifically, due to the complexity of the shape in forging, it is difficult to form a desired shape normally only by one molding. In a step of performing a multistage molding process through a plurality of upper and lower mold sets, such as forging, independently controlling the temperature of the mold A process is required.

The forging is initially performed using a cylindrical billet and subjected to final shaping to form the final shape through such processes as preliminary shaping and hatching.

In order to carry out the preliminary forming, the bulge forming and the green forming, etc. of the cylindrical billet as a raw material, a separate mold is required for each molding step, and each of the molds is placed side by side in one die set . That is, for example, there are a total of six independent molds including three upper molds arranged in the horizontal direction and three lower molds arranged corresponding to the lower portion of the upper mold.

When the preheating operation for the six independent dies is performed, preheating is performed through LPG gas in the past. In the above process, since the temperature varies among the dies, it is difficult to secure uniformity of preheating, The temperature difference between the upper mold and the lower mold is excessively generated. This may be due to the heat rising characteristics.

The present invention is intended to accurately control a plurality of independent molds to a target temperature in order to overcome the above-described problems.

Specifically, the present invention defines each unit die constituting a plurality of independent dies as one zone, and controls the temperature independently for each zone.

For example, referring to FIG. 2, six independent molds are required to carry out the preforming, the roughing and the molding, and six zones are required as a reference. That is, the first zone Z1 and the fourth zone Z4 corresponding to the preliminary molding on the upper and lower molds 10, the second zone Z2 and the fifth zone Z5 corresponding to the yellowing molding, The third zone Z3 and the sixth zone Z6. Here, the first zone Z1, the second zone Z2, and the third zone Z3 are regions formed by the respective unit dies constituting the mold halftone 12, and the fourth zone Z4, And the fifth zone Z5 and the sixth zone Z6 are regions formed by the respective unit dies constituting the mold lower mold 14. [

In each of the zones, a temperature sensing sensor 150 for temperature measurement of each unit mold is separately attached. A separate controller feedback-controls a plurality of heating modules disposed in the respective zones based on the temperature measured by the temperature sensing sensor 150 to heat the target temperature to a target temperature. That is, the temperature control for the plurality of zones is made independent by separately controlling the infrared emitting lamps constituting the heating module.

The infrared ray emitting lamp 110 is basically made by radiative heat transfer and has a good heat transfer efficiency and can focus infrared rays distributed in four directions through the reflecting portion 120 on the back surface of the infrared ray emitting lamp 110 in one direction Energy efficiency is improved.

As described above, according to the present invention, when it is necessary to independently and precisely control the temperature of a plurality of independent dies arranged in the horizontal direction in order to perform forging, a plurality of independent dies So that the temperature of the halogen lamp, which enables the preheating operation of the heating modules individually disposed in the zones of the halogen lamp, can be independently controlled.

The reflector 120 may surround one side of a plurality of infrared ray emitting lamps 110 arranged in a line, but the present invention is not limited thereto. For each of the plurality of infrared ray emitting lamps 110, Can be fabricated in the form of individual units. For example, the reflection unit 120 disposed on one side of the infrared ray emission lamp 110 changes the direction of the infrared ray emitted to one side of the infrared ray emission lamp 110 to the other side.

Meanwhile, the reflective portion 120 may be used in a reflective coating on the rear surface of the infrared ray emission lamp 110. The reflective coating may be a gold coating or a ceramic coating. In the case of the above coating method, light can be transmitted to one side even if the reflector is not used separately.

The lamp protection plate 130 may be a quartz plate or a glass plate. In this way, it is prevented from being contaminated with dust or release agent in consideration of characteristics of a near-infrared heater which is susceptible to contamination.

The cooling channel 140 is formed to penetrate through the inside of the reflection portion 120. For example, referring to FIG. 2, the plurality of infrared ray emitting lamps 110 may be arranged at regular intervals along the forming direction.

The moving module 200 allows the heating module 100 to move toward the upper and lower molds 10.

The mold preheating apparatus according to the present invention has a structure in which the upper and lower molds must be repeatedly inserted and removed through the space between the upper mold 12 and the lower mold 14 in order to preheat the mold. That is, when the mold is heated, it should enter into a pair of upper and lower molds and be discharged to the outside from the upper and lower molds when it is not opened.

Generally, many dusts are floated on the production site. In particular, the forging factory is in a state in which dust including iron powder and release lubricant is distributed to a considerable extent, and the dusts are attached to the surface of the lamp or the surface of the reflection portion, The efficiency is lowered. Further, in the case of a high-temperature heating condition, the quartz of the lamp is swollen.

As can be seen from the above problem, since the infrared ray emitting lamp 110, which is a heating unit of the mold preheating apparatus, uses a halogen lamp, cleanliness of the surface and reflection of the lamp is very important.

To this end, the present invention places a protective glass comprising quartz or heat-resistant glass as the lamp protection plate 130 in front of the lamp, primarily for the refinement of the lamp and reflector. Here, the efficiency of halogen lamps is not greatly affected even when a protective glass is disposed in front, since 85% is radiant heat and 10% is convective heat transfer.

Meanwhile, even if the lamp protection plate 130 is installed in front of the infrared ray lamp 110 to prevent contamination of the lamp and the reflection unit, a problem of contamination of the lamp protection plate 130 itself may occur. In order to solve this problem, a method of providing a lid on the lamp protection plate 130 when the mold is not heated can be used. However, closing the lid itself can be troublesome, and the lower side of the lamp and the reflective portion can be closed There is a problem that it can not be done.

Accordingly, the present invention includes a heater case for protecting the mold preheating device, and a heating module 100, which is a heater body including a lamp and a reflector, is inserted into the upper and lower molds 10 through the heater case 210 in a sliding manner And is capable of being discharged to the outside after being inserted. That is, the heating module 100 is sealed so as not to be contaminated while being accommodated in the heater case 210.

As described above, when the mold preheating device is constructed as a mobile type, the insertion and extraction structure of the heating module 100 can be performed by an operator's manual method or a separate actuator method. Here, the lamp for heating may be generally vulnerable to impact, and it may be possible to utilize a separate actuator and make use of a predetermined shock-absorbing bumper.

As an embodiment, a telescopic actuator can be utilized in the case of an actuator method. Since the general actuator is required to be long as long as the heater main body moves, there is a limitation that it is disadvantageous. In the case of the telescopic actuator, the actuator can be used when there is a restriction on the installation space as described above.

For example, referring to FIG. 5, rail structures 211, 212, and 213 of a multi-stage sliding structure disposed on both sides of the heating module 100 are combined to enable driving of the heating module 100 using a telescopic actuator . Accordingly, even when the heating module 100 enters and exits through the inside of the heater case 210, it can be firmly supported.

Here, the rail structures 211, 212 and 213 include a base rail 211 fixedly disposed in the heater case 210, a bridge rail 212 coupled to the base rail 211 so as to be pulled out in a sliding manner, and a bridge rail 212 And slide rails 213 that are coupled to be pulled out in a sliding manner and coupled on both sides of the heating module 100.

The rail structures 211 and 212 may be a simple rail type rather than a multi-stage sliding type.

The wiper for wiping the lamp protection plate 130 when the heating module 100 as the heater body moves on the inside of the heater case 210 is disposed on the inlet side of the heater case 210, 130). ≪ / RTI >

As described above, the mold preheating apparatus having a near-infrared heater according to the present invention concentrates the strong radiant energy of a near-infrared heater through a halogen lamp on a mold region requiring preheating through a reflecting portion, precisely preheating the mold, And a cooling channel is provided for cooling the reflective portion when used.

Further, the present invention provides a structure in which the heater body is inserted into the heater case in a state where the heater body is inserted in the heater case for sliding the mold, .

It is to be understood that the terms "comprises", "comprising", or "having" as used in the foregoing description mean that the constituent element can be implanted unless specifically stated to the contrary, But should be construed as further including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (7)

A heating module (100) arranged so as to be able to move into and out of the upper and lower molds (10); And
And a moving module (200) for moving the heating module (100) to upper and lower mold sides,
The heating module (100)
A plurality of infrared emitting lamps (110);
A reflection unit 120 disposed to surround one side of the plurality of infrared ray emission lamps 110;
A lamp protection plate 130 disposed on the reflective portion 120; And
And a cooling channel (140) formed in the reflective portion (120)
The heating module 100 is provided with a plurality of molds 10 capable of temperature control independently on a plurality of dies 10 arranged continuously along the horizontal direction,
Each of the unit dies constituting the upper and lower dies 10 is defined as one zone and the temperature sensing sensors 150 for measuring the temperature of the respective unit dies are individually attached to the zones The temperature is controlled independently for each zone,
A plurality of infrared emission lamps disposed in the respective zones are independently feedback-controlled based on the temperature measured by the temperature sensor 150,
The heating module 100 is disposed symmetrically between the upper and lower dies 10 and the lower end of the upper die 12 forming the plurality of dies 10 is provided with the lamp protection plate And a reflective part 120 having an infrared ray discharge lamp 110 and a cooling channel 140 are laminated in this order on the upper end of the lower mold 14 constituting the plurality of molds 10, A lamp protection plate 130, an infrared emission lamp 110 and a reflection part 120 having a cooling channel 140 are stacked in this order from bottom to top,
The cooling channels 140 are formed to penetrate through the inside of the reflection part 120 and are arranged at regular intervals along the formation direction of the plurality of infrared emission lamps 110,
The heating module 100 is inserted into the upper and lower molds 10 through a heater case 210 constituting the moving module 200 in a sliding manner so as to be preheated and then heated again during non- The heater module according to any one of claims 1 to 3, wherein the heating module (100) is housed in the heater case (210)
A mold preheating device having a near infrared heater.
delete The method according to claim 1,
The mobile module 200,
A heater case 210 for allowing the heating module 100 to slide inside and outside the upper and lower molds 10;
A vertical drive part 220 for vertically moving the heater case 210; And
And a moving frame part (230) disposed below the up and down driving part (220).
A mold preheating device having a near infrared heater.
The method of claim 3,
The lamp protection plate 130 may be a quartz plate or a heat resistant glass plate,
A mold preheating device having a near infrared heater.
The method of claim 3,
The heater case 210 may be formed of a material that enables a sliding movement of the heating module 100 using a telescopic actuator,
A mold preheating device having a near infrared heater.
The method according to claim 1,
The reflective portion 120 is formed on the rear surface of the infrared ray emission lamp 110 in a coating manner.
A mold preheating device having a near infrared heater.
The method of claim 3,
The wiper disposed on the inlet of the heater case 210 may be configured to clean the lamp protection plate 130 when the heating module 100 enters and exits the interior of the heater case 210. [
A mold preheating device having a near infrared heater.

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