KR100732649B1 - Cross-bar forming method for LCD Cassette and forming apparatus thereof - Google Patents

Abstract

The present invention relates to a crossbar forming method and a molding apparatus of an LCD cassette, the crossbar forming method of an LCD cassette according to the present invention comprises an impregnation step of impregnating a resin wound in roving in a liquid resin impregnation tank; A close contact step of supplying a mat to cover the outer circumferential surface of the resin in the impregnated state through the resin impregnating tank to closely adhere through a forming guide so that the gap between the resin and the mat is sequentially reduced and closely adhered to the preform; It is preferable that the resin and the mat pre-formed through the close contact step is made of a multi-stage curing step to put into a multi-stage heating mold machine to be cured step by step.

Meanwhile, the molding apparatus of the present invention is a resin impregnation tank for aligning and impregnating a resin; A mat supplied to surround the resin outer circumferential surface of the resin impregnated bath; Forming guide for preforming by closely reducing the distance between the resin and the mat in the state impregnated in the resin impregnation tank; It is preferable that the resin is preformed by the forming guide and a multi-stage heating molder for curing the mat step by step. There is an effect of obtaining a crossbar molding method and a molding apparatus of an LCD cassette capable of being possible, step by step hardening to improve the curing of the material to improve the durability.

Carbon fiber reinforced plastic, veil, resin

Description

Cross-bar forming method for LCD Cassette and forming apparatus

1 is a block diagram of a crossbar forming method of an LCD cassette according to an embodiment of the present invention.

Figure 2 is a perspective view of the cross-bar forming apparatus of the LCD cassette in accordance with an embodiment of the present invention.

Figure 3 is an enlarged view showing a roving installed in the crossbar forming apparatus of the LCD cassette in accordance with an embodiment of the present invention.

Figure 4 is a perspective view of the resin impregnation tank constituting the crossbar forming apparatus of the LCD cassette in accordance with an embodiment of the present invention.

5A and 5B are a perspective view and a side view of a forming guide constituting a crossbar forming apparatus of an LCD cassette according to an embodiment of the present invention.

Figure 6 is a perspective view of a multi-stage heating mold machine constituting the crossbar forming apparatus of the LCD cassette according to an embodiment of the present invention.

* Explanation of symbols for main parts of drawings *

201 .... Roving 210 .... Crossbar

220 ..... Resin impregnation 222 ..... Forming guide

224 ..... Multi-stage heating mold machine 225 ..... Carbon fiber reinforced plastic

232 ~ 237 ..... Rear guide plate 240 .....

242 ..... hardening part 244 ..... hardening part

246 ..... post hardening 250 .. heat exchange prevention

260 ..... heating unit 262 ..... heating plate

264 ... Contact plate 266 .....

The present invention relates to a crossbar molding method and a molding apparatus for an LCD cassette, and more particularly, to a crossbar molding method and a molding apparatus for an LCD cassette, which improves the curing by increasing the curing of the material as a stepwise curing is possible. .

The general pultrusion apparatus is glass fiber (Glass) in a state where a thermosetting resin (unsaturated polyester, vinyl ester, epoxy, etc.) is mixed with additives such as a low shrinkage agent, a filler, a colorant, a releasing agent, and a curing agent, which are thermoplastic resins. fiber) is appropriately arranged according to the cross-sectional shape, such as a resin impregnation tank for impregnating it, a forming guide for preforming impregnated glass fibers, a mold for curing, and a cutting device for cooling and cutting after curing by a mold. It is composed.

Such drawing is useful for the production of high quality molded products because it can produce products with a uniform cross section, and it is used as an optical fiber cover, cable tray, railway line insulation material, etc. because of its excellent electrical insulation, and chemicals such as acid or alkali It has better corrosion resistance than stainless steel and aluminum.

It also maintains excellent durability and cold resistance without warping or cracking at a wide range of temperatures (-50 to 120 ° C), making it suitable for use in extreme cold and high temperature locations.In addition, it has excellent effects on weather resistance, heat resistance and light weight. Applied and used for various purposes.

Among these applications, the field used for application is the crossbar of the LCD cassette. The crossbar is intended to support the bottom of the glass, and as the CD used in the recent years has grown in size, the glass used in this application and the cassette for storing the same have also grown in size. Since the enlarged glass has a large weight, when it is stored, the glass sag occurs in the central portion, and thus, a crossbar for supporting the bottom of the glass is used to prevent such a sag.

However, the conventional crossbar manufactured by the above apparatus has a problem in that particles are generated when the fiber particles forming the crossbar are separated by friction in which the glass is in contact with the crossbar when the glass is drawn out.

This problem may also occur as a result of irregular placement of the resin prior to curing.

In addition, when the crossbar is manufactured by a conventional molding apparatus, it is difficult to control the temperature in the mold in which the curing is performed, and thus there is a problem in that the curing temperature cannot be flexibly controlled for other products.

In addition, since the temperature inside the mold for curing is uniform, there is a problem that the curing is not made completely according to the material.

The present invention is to solve the above problems, an object of the present invention is to control the temperature to enable the elastic curing of the other material, the step of the curing is possible to improve the curing of the material of the LCD cassette It is to provide a crossbar molding apparatus and a molding method.

Crossbar forming method of the LCD cassette according to the present invention for achieving the above object is an impregnation step of impregnating a resin wound in roving in a liquid resin impregnation tank; A close contact step of supplying a mat to cover the outer circumferential surface of the resin in the impregnated state through the resin impregnating tank to closely adhere through a forming guide so that the gap between the resin and the mat is sequentially reduced and closely adhered to the preform; It is preferable that the resin and the mat pre-formed through the close contact step is made of a multi-stage curing step to put into a multi-stage heating mold machine to be cured step by step.

Preferably, the resin is carbon fiber reinforced plastic, and the mat is an antistatic veil, and the forming guide has a plurality of through-holes formed to move through the resin and the mat through the resin impregnation tank, and at regular intervals. It is preferable that it is composed of a plurality of guide plates which are arranged in series with a plurality of guide rods installed between the guide plate to be located on the outer periphery of the resin and the mat.

The through-holes are preferably formed to be in close contact with the guide plate closer to the multi-stage heating die, and the multi-stage curing step is preferably composed of a curing reaction step, a curing generation step, and a post curing step. , The curing generation step, the post curing step is preferably provided in one frame.

And the temperature of the curing reaction step is 210 ℃ ~ 230 ℃, the temperature of the curing generation step is 220 ℃ ~ 240 ℃, the temperature of the post curing step is preferably 210 ℃ ~ 230 ℃.

On the other hand, cross-bar forming apparatus of the LCD cassette according to the present invention comprises a resin impregnation tank for aligning and impregnating the resin; A mat supplied to surround the resin outer circumferential surface of the resin impregnated bath; Forming guide for preforming by closely reducing the distance between the resin and the mat in the state impregnated in the resin impregnation tank; Preferably, the resin is preformed by the forming guide and a multi-stage heating molder for hardening the mat step by step. The resin is carbon fiber reinforced plastic, and the mat is preferably an antistatic bale.

And the forming guide is located in front of the resin impregnation tank and the front guide plate formed with a plurality of through holes to move the resin through, a plurality of through holes so that the resin and the bale through the resin impregnation tank passes through The plurality of guide rods are formed and arranged in series at regular intervals, the plurality of guide rods are provided between the rear guide plate to be located on the outer periphery of the resin and the mat, the guide rod is It is preferable to bend toward the end of the multi-stage heating mold machine from the end of the resin impregnation tank side, and one of the through holes is preferably formed in a rectangular shape so that the mat moves through.

The multi-stage heating mold machine is preferably composed of a curing reaction part, a hardening generating part, and a post-curing part, and the hardening reaction part, the hardening generating part and the post hardening part which constitute the multi-stage heating mold machine are provided in one frame. Preferably, the internal temperature of the curing reaction unit is 210 ℃ ~ 230 ℃, the internal temperature of the curing generating unit is 220 ℃ ~ 240 ℃, the internal temperature of the post-curing unit is preferably 210 ℃ ~ 230 ℃.

The heat exchange prevention part may be formed in the multi-stage heating mold machine formed of the curing reaction part, the curing generation part, and the post-curing part to prevent heat exchange and heat transfer in each section. The heat exchange prevention part may include the curing reaction part, It is preferable that it is a groove formed around the boundary of each said hardening generation part and the said post hardening part, and it is preferable that a heating unit is provided in the said multistage heating mold machine.

The multi-stage heating die has a rectangular cross section, and the heating unit is attached to four outer circumferential surfaces of each of the curing reaction unit, the hardening generating unit, and the post-curing unit forming the multi-stage heating die, and generates heat. Is installed on the outer surface of the contact plate for preventing the heat loss and the adhesion of the heating plate to the multi-stage heating mold machine, the curing reaction unit, the curing generating unit, the temperature measuring sensor for measuring the internal temperature of the post-curing unit It is preferred to be configured.

According to the present invention of the configuration as described above can be cured step by step to enable the elastic molding of the material, the cross-bar molding method and molding of the LC cassette that the curing of the material is improved to improve the durability is improved There is an effect of obtaining the device.

Hereinafter, one preferred embodiment according to the present invention will be described in more detail with reference to the drawings, wherein the same reference numerals shown in each of the drawings indicate the same member having the same function.

As shown in Figure 1, the crossbar forming method 300 of the LCD cassette according to the present invention is impregnated through the impregnating step (S310), the resin impregnation tank to impregnate the resin wound in the roving 201 in the resin impregnation tank Pre-formed resin through a close contact step (S320), a close contact step (S320) to form a contact so that the mat is supplied to reduce the gap between the resin and the mat in order to wrap the outer peripheral surface of the resin in a closed state And it consists of a multi-stage curing step (S330) is put into the multi-stage heating mold machine to harden the mat step.

The multi-stage curing step (S330) is composed of a curing reaction step (S332), curing generation step (S334), post-cure step (S336).

Hereinafter, each component will be described in more detail.

Impregnation step (S310) is a step of impregnating the resin wound in the roving in the liquid resin impregnation tank, the resin impregnation tank in which the resin is impregnated thermosetting resin (unsaturated polyester, vinyl ester, epoxy, etc.), low shrinkage agent, filler, release agent A compound formed by mixing a curing agent or the like is provided.

The compound serves as an adhesive for integrating the impregnated resin and the mat, and the compound to which the compound is attached and the mat attached to surround the mat flows into the mold machine to easily cure.

The resin wound on the roving may be in various forms, but in the present invention, carbon fiber reinforced plastics (225) is used as one preferred embodiment.

When such a resin is impregnated in the resin impregnation tank, a close step (S320) of continuously supplying a mat for wrapping the circumference of the resin is in close contact.

The mat is to use an antistatic veil (veil) due to the installation characteristics that the crossbar produced by the molding apparatus and the molding method of the present invention is used in the LCD cassette, the crossbar is installed on the LCD cassette supports the glass, the static electricity due to contact This is because it should not occur.

The bail 226 provided on the outer circumferential surface of the crossbar 210 is provided with an antistatic veil 226 for improving the antistatic function and surface hardness, and the antistatic veil 226 for this function is a PRECISION FABRICS GROUP There is Surfacing Veil of http://www.precisionfabrics.com/. In addition, any form can be used as long as it is a polyester veil that has a conductive function added to a non-conductive veil.

The impregnated carbon fiber reinforced plastic 225 and the bale 226 supplied to surround the outer circumference thereof are sequentially reduced by the close contacting step (S120), so that the bale 226 of the carbon fiber reinforced plastic 225 The forming guide 222 is moved to be in close contact with the outer circumferential surface.

The forming guide 222 is located in front of the resin impregnation tank 220 and the front guide plate 231 and the resin impregnation tank 220 in which a plurality of through holes 231a are formed to move through the carbon fiber reinforced plastic 225. ) And a plurality of rear guide plates 232 to 237 and rear guide plates 232 to 237 installed in series between the multi-stage heating mold 224 and the carbon fiber reinforced plastic 225 and the veil 226. It is composed of a plurality of guide rods (238) located on the outer periphery.

Through holes 232a to 237a are formed in the rear guide plates 232 to 237 so that the carbon fiber reinforced plastics 225 and the veil 226 move through. The through holes 232a to 237a are formed in a state in which the mutual distance between the centers of the through holes 232a to 237a becomes narrower as the guide plates 232 to 237 positioned closer to the multi-stage heating mold 224. The 225 and the veil 226 become closer to each other.

As the distance between the centers of the through-holes 232a to 237a is narrowed toward the multi-stage heating mold machine 224 as described above, the carbon fiber-reinforced plastics 225 and the veils 226 are attached and preformed. Will be similar to

Thus, the carbon fiber reinforced plastic 225 and the bale 226 are pre-molded to close the contact step (S320), and then the multi-stage curing step (S330) by the multi-stage heating mold machine (224).

The multi-stage curing step (S330) is a step of curing the carbon fiber reinforced plastic 225 and the veil 226 preformed by the adhesion step (S320) to form a final product, the curing reaction step (S332), the curing generation step (S334), it is composed of a post-cure step (S336).

The multi-stage heating mold machine 224 in which the multi-stage curing step (S330) is performed is formed in one frame.

The curing reaction step (S332) is a preheating step for curing, in this step the carbon fiber reinforced plastic 225 and the veil 226 is a curing reaction occurs, the preferred internal temperature is 210 ℃ ~ 230 ℃.

And the curing generation step (S334) is a step for the complete curing of the carbon fiber-reinforced plastic 225 and the bale 226 started to cure in the curing reaction step (S332), the preferred internal temperature is 220 ℃ ~ 240 ℃.

After the carbon fiber reinforced plastic 225 and the bale 226 is carried out after the curing step (S336) is carried out after the internal temperature is maintained at 210 ℃ ~ 230 ℃, curing in the curing step (S334) This is to ensure that the final curing is made once more for the portion that is not made.

As described above, the present invention reduces the interval between the carbon fiber sensitized plastic 225 and the veil 226 through the adhesion step (S320) sequentially so that they are in close contact with each other so that the preliminary molding is possible. It can be confirmed whether the state has been made to obtain a molding method that can lower the defective rate.

In addition, it is possible to obtain a molding method capable of producing a high quality molding material according to perfect curing by three steps of the curing process.

After the step of cooling and cutting (S340) is carried out to the final product.

On the other hand, the cross-bar forming apparatus 200 of the LCD cassette to enable the molding method as described above is impregnated in the resin impregnation tank 220, the resin impregnation tank 220 for aligning and impregnating the resin 225. Forming for preforming by closely reducing the interval between the resin 225 and the mat 226 in the state impregnated in the mat 226, the resin impregnation tank 220 supplied to surround the outer peripheral surface of the resin 225 of the A guide 222, a resin 225 preformed by the forming guide 222, and a multi-stage heating mold machine 224 for curing the mat 226 step by step.

In one preferred embodiment of the present invention, the resin 225 uses carbon fiber reinforced plastics, and the mat 226 uses an antistatic veil.

Rovings 201 wound around the carbon fiber reinforced plastic 225 are installed in a creel, and rovings in which an antistatic veil 226 is wound are installed on a rotating shaft 228 for rotating them.

The resin impregnation tank 220 for impregnating the carbon fiber reinforced plastic 225 has a compound formed by mixing a thermosetting resin (unsaturated polyester, vinyl ester, epoxy, etc.), a low shrinkage agent, a filler, a mold releasing agent, a curing agent, and the like. It is provided.

Carbon fiber-reinforced plastic 225 past the resin impregnation tank 220 is a certain strand gathered to have a shape similar to the shape of a plate.

The carbon fiber reinforced plastic 225 impregnated in the resin impregnation tank 220 passes through the forming guide 222, and the veil 226 is supplied to the carbon fiber reinforced plastic 225 passing through the forming guide 222, and thus the outer periphery thereof. Will wrap.

The forming guide 222 is located in front of the resin impregnation tank 220 and the front guide plate 231 and the resin impregnation tank 220 in which a plurality of through holes 231a are formed to move through the carbon fiber reinforced plastic 225. A plurality of through holes 232a to 237a are formed to move through the carbon fiber reinforced plastic 225 and the veil 226 through the plurality of rear guide plates 232 to 237 disposed in series at regular intervals. It is composed of a plurality of guide rods 238 installed between the rear guide plates 232 to 237 to be positioned on the outer circumference of the carbon fiber reinforced plastic 225 and the bale 226.

Forming guide 222 is to reduce the interval between the carbon fiber reinforced plastic 225 and the bale 226 in order to close them in a stable arrangement state, for this purpose, the rear guide plate (232 ~ ~) close to the multi-stage heating mold 224 237, the through holes 232a to 237a are formed to have a distance between centers.

One of the through holes 232a to 237a is formed in a rectangular shape so that the veil 226 can pass through.

The guide rods 238 are installed between the rear guide plates 232 to 237 so as to be positioned at the outer circumference of the carbon fiber reinforced plastic 225 and the veil 226.

The guide rod 238 provided between each of the rear guide plates 232 to 237 is curved toward the end of the multi-stage heating mold 224 at the end of the resin impregnation tank 220 side, and the material is made of steel.

In addition, the multi-stage heating mold machine 224 in which the curing reaction step (S332), the curing generating step (S334), and the after curing step (S336) are performed is a curing reaction part 242, a curing generating part 244, and a post-curing part ( 246, which are formed in one frame 240. Multi-stage heating mold machine 224 can be produced in a variety of forms, but in the present invention will be described by taking an example in the form of a cross section as an example.

The temperature inside the curing reaction unit 242, the curing generating unit 244, and the post-curing unit 246 is maintained at 210 ° C. to 230 ° C., 220 ° C. to 240 ° C., and 210 ° C. to 230 ° C., respectively.

The heat exchange prevention part 250 is formed in the multi-stage heating mold 224 to prevent heat exchange and heat transfer in each section of the curing reaction part 242, the curing generating part 244, and the post curing part 246.

The heat exchange prevention unit 250 may be a groove formed around a boundary of each of the curing reaction unit 242, the curing generating unit 244, and the post curing unit 246.

The heat exchange prevention part 250 is formed because the temperature difference between the curing reaction part 242, the curing generating part 244, and the post-curing part 246 constituting the multi-stage heating mold machine 224 is different. This is to ensure that the complete curing in each section is not delivered to the section.

And the multi-stage heating mold 224 is provided with a heat generating unit 260.

The heat generating unit 260 is to maintain a constant temperature in the curing reaction unit 242, the curing generating unit 244, the post-curing unit 246 constituting the multi-stage heating mold machine 224, each of the four outer peripheral surfaces It is attached to the heat generating plate 262 and the heat generating plate 262 attached to the heat generating element 261 so that the heat is generated by electricity to adhere to the heat generating plate 262 in close contact and to prevent heat loss to the outside And a temperature measuring sensor 266 for measuring the internal temperature of the curing reaction unit 242, the curing generating unit 244, and the post curing unit 246.

Although not shown, the temperature of each curing reaction unit 242, the curing generating unit 244, and the post-curing unit 246 measured by the temperature measuring sensor 266 is a control unit (not shown) for controlling the entire molding apparatus. Is displayed.

Through the multi-stage heating mold machine 224 of this configuration, the crossbar 210, which is completely cured, is cooled and then cut.

Hereinafter, a description will be given of the crossbar forming method of the LCD cassette and the use state of the molding apparatus according to the present invention having the configuration described above.

The carbon fiber reinforced plastic 225 is pulled out of the roving installed in the krill, and passed through the guide plates 232 to 237. Then, the impregnation step S310 is performed to impregnate the resin impregnation tank 220.

In this case, it is checked whether the carbon fiber reinforced plastics 225 do not cross each other.

The impregnated carbon fiber reinforced plastic 225 passes through the forming guide 222, and at the same time, the bale 226 is also supplied in a form located on the outer circumference of the carbon fiber reinforced plastic 225.

The carbon fiber reinforced plastic 225 and the veil 226, which are in close contact with the forming guide 222 through the forming guide 222, are adhered through the guide plate 236 to be preformed, and then the multi-stage heating mold machine 224. Is supplied.

 The carbon fiber reinforced plastic 225 and the veil 226 supplied to the curing reaction unit 242 located at the front of the multi-stage heating mold 224 are maintained at a temperature of 210 ° C. to 230 ° C., and the curing reaction step (S332) is performed. In this step, curing begins to occur.

The carbon fiber-reinforced plastic 225 and the veil 226 started to cure by the hardening reaction part 242 move the hardening generating part 244 where the internal temperature is maintained at 220 ° C. to 240 ° C. and the hardening is made in earnest. Most of the hardening takes place.

Thereafter, after passing through the curing unit 246, in the post-curing unit 246 to cure the portion that has not been made, the internal temperature is maintained at 210 ℃ ~ 230 ℃.

The carbon fiber reinforced plastic 225 and the bale 226 which pass through the multi-stage heating mold machine 224 composed of three stages are completely hardened, and are pulled by the puller 270 that pulls them, and then the cooling process and It is finished by the cutting process.

The cut is cut by the cutter 280.

As described above, the method and apparatus for forming a crossbar of an LCD cassette of the present invention represents a technical idea of manufacturing a high quality crossbar using a forming guide for preforming and a multi-stage heating mold machine capable of stepwise curing.

Therefore, the forming guide may be formed in other forms not shown in the present invention, or may be performed by changing the shape of the multi-stage heating mold. However, all of these embodiments should be considered to be included in the technical scope of the present invention if the configuration is to perform a pre-molding before the curing is made, step-by-step multi-stage curing.

According to the present invention of the configuration as described above can be cured step by step to enable the elastic molding of the material, the cross-bar molding method and molding of the LC cassette that the curing of the material is improved to improve the durability is improved There is an effect of obtaining the device.

Claims (19)

An impregnation step of impregnating the resin wound on the roving in a liquid resin impregnation tank; A close contact step of supplying a mat to cover the outer circumferential surface of the resin in the impregnated state through the resin impregnating tank to closely adhere through a forming guide so that the gap between the resin and the mat is sequentially reduced and closely adhered to the preform; It is made of a multi-stage curing step of putting the resin and the mat pre-formed through the close contact step in a multi-stage heating mold machine to cure step by step, Here, the forming guide is located in front of the resin impregnation tank and the front guide plate formed with a plurality of through holes so that the resin moves through, the resin through the resin impregnation tank and the mat penetrates to move in close contact with each other A plurality of through-holes are formed so that the plurality of rear guide plates are arranged in series at regular intervals, and the plurality of guide rods are installed between the rear guide plate to be located on the outer periphery of the resin and the mat. Crossbar molding method of CD cassette delete The method of claim 1, wherein the resin is a carbon fiber reinforced plastic, and the mat is an antistatic veil. The method of claim 1, wherein the through holes are formed such that the distance between the centers is closer to each other as the guide plates are closer to the multi-stage heating die. The method of claim 1, wherein the multi-stage curing step comprises a curing reaction step, a curing generating step, a post curing step. 6. The method of claim 5, wherein the curing reaction step, the curing generation step, and the post-curing step are provided in one frame. According to claim 5, wherein the temperature of the curing reaction step is 210 ℃ ~ 230 ℃, the temperature of the curing generating step is 220 ℃ ~ 240 ℃, the temperature of the post curing step is characterized in that 210 ℃ ~ 230 ℃. Crossbar molding method of the LCD cassette. A resin impregnation tank for aligning and impregnating the resin; A mat supplied to surround the resin outer circumferential surface of the resin impregnated bath; Forming guide for preforming by closely reducing the distance between the resin and the mat in the state impregnated in the resin impregnation tank; It is provided with a multi-stage heating mold machine for curing the resin and the mat formed by preforming by the forming guide step by step, Here, the forming guide is located in front of the resin impregnation tank, the front guide plate is formed with a plurality of through holes so that the resin moves through, a plurality of the resin and the mat through the resin impregnation tank to move through An LCD cassette, comprising a plurality of rear guide plates formed with a through hole and arranged in series at regular intervals, and a plurality of guide rods disposed between the rear guide plates so as to be positioned on the outer circumference of the resin and the mat. Crossbar forming machine. 9. The crossbar molding apparatus of claim 8, wherein the resin is a carbon fiber reinforced plastic, and the mat is an antistatic veil. delete 9. The crossbar molding apparatus of claim 8, wherein the guide rod is bent from the end of the resin impregnation tank to the end of the multi-stage heating mold machine. The apparatus of claim 8, wherein any one of the through holes formed in the rear guide plate is formed in a rectangular shape so that the mat moves through the mat. [9] The crossbar forming apparatus of claim 8, wherein the multi-stage heating mold is composed of a curing reaction part, a curing generating part, and a post curing part. The crossbar forming apparatus of claim 13, wherein the curing reaction unit, the curing generating unit, and the post curing unit are provided in one frame. 15. The method of claim 14, wherein the internal temperature of the curing reaction unit is 210 ℃ ~ 230 ℃, the internal temperature of the curing generating unit is 220 ℃ ~ 240 ℃, the internal temperature of the post-curing unit is characterized in that 210 ℃ ~ 230 ℃ Crossbar forming apparatus of the LCD cassette. The crossbar of an LCD cassette according to claim 13, wherein the heat exchange prevention part is formed in the multi-stage heating mold machine formed of the curing reaction part, the curing generating part, and the post-curing part to prevent heat exchange and heat transfer in each section. Molding apparatus. 17. The crossbar of an LCD cassette according to claim 16, wherein the multi-stage heating die is rectangular in cross section and the heat exchange prevention portion is a groove formed around a boundary of each of the curing reaction portion, the curing generation portion, and the post curing portion. Molding apparatus. 18. The cross-bar forming apparatus of any one of claims 8 to 12, wherein the multi-stage heating die is provided with a heat generating unit. The heating unit of claim 18, wherein the heating unit is attached to four outer circumferential surfaces of each of the curing reaction unit, the curing generating unit, and the post-curing unit to form the multi-stage heating die, and is provided on an outer surface of the heating plate. Characterized in that it consists of a temperature measuring sensor for measuring the internal temperature of the adhesion plate, the curing reaction unit, the curing generating unit, the post-curing unit to prevent adhesion of the heating plate and heat loss to the multi-stage heating mold machine. Crossbar forming device of LCD cassette.

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