KR100362306B1 - Manufacturing method and device for strengthening glass with 3rd dimension curved surface - Google Patents

Abstract

The present invention relates to a method and an apparatus for manufacturing a three-dimensional curved reinforced glass,

A plurality of flat glasses, which are sequentially injected into the initial heating chamber, are advanced by a predetermined distance for a predetermined period of time, The reciprocating operation for repeating the reciprocating operation to return to the home position is repeated one to three times, and then the reciprocating operation for advancing the predetermined distance again for a predetermined time and then repeating the reciprocating operation for repeating the forward and backward operations is repeated successively, An initial heating step of heating the flat glass on the front side among a plurality of flat glass sheets which have been heated and heated to a surface temperature of about 500 to 550 占 폚, Among the plurality of flat glasses which have been heated in the initial heating chamber, the front flat glass heated to a temperature of about 500 to 550 DEG C gradually flows from immediately after being put into the curved surface forming chamber maintaining an internal temperature of about 450 to 500 DEG C When the surface temperature of the flat glass is cooled to about 450 to 500 DEG C while the flat glass in the initial heating chamber of the initial heating stage is kept stationary in the curvilinear molding chamber for a certain time during the backward operation, A curved surface forming step of forming a flat glass into a curved surface by a combined operation of an upper and a lower curved surface forming mold provided in a molding chamber; The upper and lower curved mold forming molds in which the flat glass is curved in the curved surface molding chamber are held by the curved surface glass formed by the curved surface so that a plurality of flat glasses are held at a predetermined distance Regardless of the rotation operation of the conveying roller for advancing the curved glass, the curved glass is allowed to remain in the curved surface molding chamber, and then the flat glass in the front of the initial heating chamber is put into the curved surface forming chamber, A curved glass transfer step of lowering the curved glass on the transfer roller to transfer the curved glass completed in the curved surface forming process to the reheating chamber when the front flat glass of the initial heating chamber is inserted into the curved forming chamber; The curved glass conveyed from the curved glass conveying step is fed into a reheating chamber having an internal temperature of 650 to 730 DEG C, and thereafter is repeatedly moved forward and backward by a predetermined distance for a predetermined time. A reheating step of reheating the material to a temperature of about 550 DEG C and then transferring the material to a next step; And

In the reheating step, the upper and lower surfaces of the curved glass, which have been reheated to a surface temperature of about 500 to 550 ° C, are exposed to the cooled compressed air injected at a pressure of 100 mbar nozzle for 9 to 11 seconds, And a quenching and strengthening step for strengthening the quenching.

Description

Technical Field [0001] The present invention relates to a three-dimensional curved reinforced glass manufacturing apparatus,

The present invention relates to a manufacturing method for manufacturing a three-dimensional curved reinforced glass and a manufacturing apparatus for the same.

BACKGROUND ART Generally, in automobiles, a rear-view mirror having a convex or concave curved surface is used for observation or enlargement of a wide rear area, and a two-dimensional curved glass product formed by a curved surface rather than a flat surface is used for the left and right glass windows or out Side rearview mirrors, or glass lids in pots.

Unlike flat glass products, which are used by cutting large-sized flat glass produced in a glass factory, the curved glass products have characteristics of being difficult to manufacture because they are formed by thermally deforming the cut flat glass according to the curved shape standard Therefore, it has a merit that the added value of the product is high as it is difficult to manufacture.

Background Art [0002] Conventional techniques for manufacturing a curved glass product include a method in which a flat glass cut on a metal mold having a two-dimensional curved surface is placed on a large number of die molds, and the heated glass is squeezed by self- There is a method of making the mold close to the mold, but this method is pointed out as a problem that the energy consumption is large and the productivity is very low.

Vacuum suction type and press pressing type are used as a conventional technique for manufacturing a two-dimensional curved glass.

However, since the above-mentioned vacuum suction type is difficult to mold in the case of a thick glass or a large surface area product, it is usually limited to the manufacture of products having a small surface area of 2 mm or less in thickness, Therefore, when the vacuum pressure is large or the suction hole for vacuum is large, the glass adheres to the curved molding surface of the mold, and the contact surface of the glass is melted by the suction hole for vacuum There is a problem that a suction phenomenon occurs or a hole is formed in the mold, and a defect rate due to suction or hole marks formed by the vacuum suction hole formed in the mold as described above in the vacuum suction type usually occurs on an average of more than 25% , The productivity of two-dimensional curved glass products is low. Ever been.

In addition, in the above-mentioned vacuum suction type, the fine holes formed in the mold are limited to 1 mm or less, but it is pointed out that the fine holes are frequently clogged by the foreign substances and the cleaning is also inconvenient.

In addition, in the case of the above-mentioned press-pressing type, although it is widely used by solving the problems of the above vacuum suction type, in order to prevent a crack due to a temperature difference when the curved pressure- It is inconvenient and requires a lot of energy to be heated separately according to the heating temperature of the heated flat glass. In addition, when the pressing mold presses the flat glass, the flat glass surface contacting with the pressing mold is prevented from being scratched A thin cloth made of silica wool having a smooth and heat-resisting property is laid on the surface of a flat metal mold. Therefore, it has been pointed out that the workability is remarkably deteriorated, and a silica wool cloth or a pressurized If there is foreign matter on the pressing surface of the mold, It therefore leaves a scratch on the surface that is costly to maintain a clean working environment takes is pointed out as a problem.

In consideration of the above-described conventional problems, the present invention has proposed a manufacturing apparatus for molding a curved glass product of a new type through a method disclosed in Unexamined Patent Publication No. 1998-33443 have.

In the prior art, the flat glass placed on the curved forming surface of the mold conveyed by the rotary roller is positioned in a space separated from the outside through the hood cover, and then the heated compressed air is supplied to the curved space, And the flat glass placed on the molding surface is brought into close contact with the curved molding surface by the compressed air to produce a curved glass product. In addition, the above-mentioned preliminary patent has no limitation on the size of the product and the molding time, cost, It is a very useful invention, but it shows some problems as follows.

In other words, as a common problem as in the above-mentioned press-pressing type, a large amount of molds for transporting glass is needed, and a device for placing glass on the mold and a device for transferring the mold are required. And the mold is large in size when the mold is transferred from the thermosensitive room after the mold is transferred to the outside to maintain the heating state while the mold has a large latent heat effect, while the curved glass product, which has been molded on the mold, In order to prevent the occurrence of defects due to the difference in cooling temperature, the mold is allowed to stay in the heating chamber for a long time until the mold is cooled to some extent, and then the mold is transported Prevent product failure due to difference of cooling temperature While the production speed of the product is lowered.

In order to solve the problems of the prior art, the present inventor has proposed a method for transferring glass itself without using a mold for transporting the glass through Patent Publication No. 1999-7755 An apparatus and a method for manufacturing curved glass have been proposed.

However, the above-mentioned patent discloses that, compared to the prior art patent described above, it is possible to simplify the facilities of the manufacturing apparatus and to increase the productivity, but it is possible to provide a glass heating chamber for heating the surface temperature of the flat glass to a proper temperature, There is a problem in that the flat glass conveyed to the hot forming chamber can not be accurately stopped at the correct position because the flat glass which is conveyed does not have a structure for stopping the precise stopping when the upper and lower curved forming dies are installed Even if a sensor for sensing the stop position of the flat glass is installed in the warming chamber and the rotation of the roller is momentarily stopped when the flat glass entering the warming chamber reaches the stop position, A phenomenon occurs in which the vehicle is out of the stop position And the stop position of the flat glass caused by the inertial force also appear differently. Therefore, the deviation of the stopping distance of the flat glass necessarily occurs. The deviation of the stopping distance causes problems such as a decrease in the precision of the curved glass, .

Further, in the above-mentioned patent, the upper forming die, which forms the convex forming surface toward the downward direction, is stopped and the lower forming die which forms the concave forming surface toward the upper side rises toward the upper upper forming die, Since the curved glass formed by the upper and lower molding dies is formed in a state in which the peripheral edge portion thereof is widened toward the upper side, the curved glass having completed the curved surface is formed in a state in which the center portion thereof is placed on the roller The coefficient of friction between the roller and the roller is remarkably lowered. Therefore, the roller can not be smoothly transferred according to the rotation of the roller, and the roller can not be transported quickly due to a slipping phenomenon.

Since the present invention has been developed so as to produce a curved glass product having a two-dimensional curved surface, it is difficult to manufacture a curved glass product having a three-dimensional curved surface, and furthermore, it can be applied to manufacture a curved glass product none.

The present invention has been made in view of the above-described problems in the prior art. In particular, the present invention provides a flat glass having a thickness of 3 to 5 mm on the basis of a selection name disclosed in the published patent publication, And to provide a method and an apparatus capable of continuously reinforcing glass while being molded. Another object of the present invention is to provide a method of manufacturing a three-dimensional curved glass reinforced glass in large quantities.

According to an aspect of the present invention,

A transfer roller which is installed at an interval suitable for transferring the flat or curved glass onto the upper frame of the base is installed across the heating chamber and the curved surface forming chamber so as to form a curved surface, And then the heated flat glass is transferred to the curved surface forming chamber, and then the curved surface formed by the combined operation of the upper and lower curved surface forming molds is conveyed to the outside,

A plurality of flat glasses, which are sequentially put into the heating chamber, are moved forward by a predetermined distance for a predetermined period of time, The reciprocating operation for repeating the reciprocating operation is repeated one to three times, and then the reciprocating operation for advancing the predetermined distance again for a predetermined time is repeated for the same number of times, An initial heating step of heating the flat glass on the front side of the plurality of flat glass sheets being heated to a surface temperature of about 500 to 550 DEG C,

Among the plurality of flat glasses which have been heated in the heating chamber, the front flat glass heated to a temperature of about 500 to 550 占 폚 is gradually cooled from immediately after being put into the curved molding chamber maintaining the inner temperature of about 450 to 500 占 폚 While the flat glass in the heating chamber in the initial heating step is cooled to a temperature of 450 to 500 DEG C while the flat glass is kept stationary in the curved forming chamber for a certain time during the backward operation, A curved surface forming step of forming a flat glass into a curved surface by a combined operation of upper and lower curved surface forming molds installed inside;

The upper and lower curved mold forming molds in which the flat glass is curved in the curved surface molding chamber are held by the curved surface glass formed by the curved surface so that a plurality of flat glasses are held at a predetermined distance The curved glass is allowed to remain in the curved surface forming chamber continuously regardless of the rotating operation of the conveying roller for advancing the curved surface, and then the curved surface of the curved surface A curved glass conveying step of lowering the glass on the conveying roller so that the curved glass whose curved surface forming is completed when the front flat glass of the heating chamber is put into the curved forming chamber;

The curved glass conveyed from the curved glass conveying step is fed into a reheating chamber having an internal temperature of 650 to 730 DEG C, and thereafter is repeatedly moved forward and backward by a predetermined distance for a predetermined time. A reheating step of reheating the material to a temperature of about 550 DEG C and then transferring the material to a next step; And

In the reheating step, the upper and lower surfaces of the curved glass, which have been reheated to a surface temperature of about 500 to 550 ° C, are exposed to the cooled compressed air injected at a pressure of 100 mbar nozzle for 9 to 11 seconds, A strengthening quenching step;

And a second electrode,

Further, the compressed compressed air supplied to the quenching and tempering step is compressed in the compressor, and is uniformly sprayed on the entire surface of the curved glass in a state of being cooled to about 7 to 10 ° C in the process of passing through the air cooler, And the like.

In order to achieve the object of the present invention,

A flat conveying roller which is installed at an interval suitable for conveying the flat or curved glass on the upper frame of the base and rotatably operated is installed throughout the initial heating chamber and the curved surface forming chamber to form the flat glass entered into the heating chamber into a curved surface And then transferring the heated flat glass to a curved surface forming chamber, curving the surface of the curved surface glass by the combined operation of the upper and lower curved surface forming molds,

A reheating chamber formed to be connected to a curved surface forming chamber formed at one side of the heating chamber and reheating the surface temperature of the curved glass formed into a curved surface in the curved surface forming chamber to a high temperature suitable for strengthening;

A plurality of heating chambers, a curved surface forming chamber, and a reheating chamber, wherein each of the heating chamber, the curved surface forming chamber, and the reheating chamber is provided with a space long enough to feed the flat glass and the curved glass, , The heating chamber section may include a forward rotation for forwarding a flat glass for a predetermined time and a reverse rotation for returning the flat glass to a home position and a forward rotation for returning a predetermined distance for a predetermined time after being returned to the home position. And the curved surface molding room section is continuously rotated in the forward and backward directions until the flat glass conveyed in the heating chamber reaches the curved surface forming position, While the reheating chamber section is not rotated in the heating chamber section The same positive and feed rollers that are installed so as to repeat the reversing operation and;

And a stopper cylinder fixedly attached to the bottom of the curvilinear molding chamber so as to be able to move up and down when the piston of the curvilinear molding compartment is operated to be lower than the upper portion of the feed roller And a stopper which protrudes higher than an upper portion of the conveying roller during the immersion operation of the piston to accurately stop the flat glass conveyed by the conveying roller at a curved surface forming position;

An upper mold cylinder which is installed in an exposed state on the upper surface of the curvilinear molding chamber and lifts up the upper curvature forming mold provided above the transfer roller;

Wherein the curved surface forming mold is formed at a position higher than the upper portion of the conveying roller by cooperating with the upper curved forming die to form a flat The glass is molded into a curved glass, and then the curved glass is curved until the flat glass is transferred from the heating chamber to the curved surface forming chamber. When the flat glass is transferred to the curved surface forming chamber, the curved glass is placed on the conveying roller A lower mold cylinder for performing an operation;

A gate which seals the discharge port of the reheating chamber by a gate cylinder fixedly attached to the outside of the discharge port side of the reheating chamber to prevent heat loss and opens only when reheated curved glass is discharged from the reheating chamber;

And a glass plate provided on a horizontal line such as a conveying roller in the reheating chamber and adapted to be rapidly discharged instantaneously to take over the curved glass discharged from the discharge port of the reheating chamber, A rapid cooling and strengthening device having a plurality of conveying rollers arranged at predetermined intervals to convey the curved glass while slowly rotating after being once entered; And

An upper and a lower air tank installed on upper and lower sides of a conveying roller of the quenching and tempering apparatus and having a plurality of nozzles for spraying evenly compressed cold air evenly on the entire upper and lower surfaces of the curved glass conveyed by the conveying rollers;

And a second electrode,

The upper and lower curved molding dies are formed as concave molding surfaces while the lower curved molding surfaces are formed as convex molding surfaces. The upper and lower curved molding dies And the peripheral portion of the curved glass whose curved surface has been completed by the cooperating operation is conveyed in a state of being placed on the conveying roller,

In addition, the upper and lower air tanks are provided with four vertically arranged vertical columns which are independently provided inside the quenching and strengthening apparatus, and upper and lower frames connecting upper and lower ends of the vertical columns, respectively, And is configured to inject cold compressed air toward both sides of the curved glass while reciprocating in a direction perpendicular to the conveying direction of the curved glass conveyed to the conveying roller.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view for explaining a manufacturing method of a three-

Fig.

Fig. 2 is a perspective view of the heating chamber and the reheating chamber of the present invention,

Plan view of the feed roller.

3 (A) to 3 (P) show a state in which the conveying roller of FIG. 2 conveys the flat glass and the curved glass

The operation state is also shown continuously by dividing the process.

4 is a sectional view taken along the line X-X in Fig.

Figs. 5 to 8 are operation states of the upper and lower curved surface forming dies of the present invention,

5 is a state in which the stopper for stopping the flat glass is in an elevated state,

6 shows a state in which the upper curved surface forming mold is in a lowered operation state,

7 shows a state in which the lower curved surface forming mold is raised,

8 shows a state in which the upper and lower curved surface forming dies are raised and lowered.

9 is a gate operating state view of the reheating chamber of the present invention.

10 is a sectional view taken along the line Y-Y in Fig. 1 showing the quenching-enhancing device of the present invention from another angle;

Fig. 11 is a schematic view showing the upper and lower air tanks of the quenching and tempering apparatus of the present invention,

Fig. 6 is a plan view showing the operating state of the motor.

[Description of Drawings]

1: expectation 2: heating chamber

3: curved surface forming room 4: reheating room

5: quenching strengthening device 6a, 6b: upper and lower curved surface forming mold

7a, 7b: Upper and lower air tank 8: Compressor

9: Feed mechanism 11: Vertical frame

12: upper frame 13: feed roller

21, 31: Inlet port 32, 41:

42: gate cylinder 43: gate

51a: lower base 51b: upper base

52a: lower support bar 52b: upper support

53a, 53b: guide rail 54: support frame body

55: motor 55a: cam mechanism

55b: connecting link 61, 65: upper and lower lifting cylinders

62, 66: upper and lower operation frames 63, 67: upper operation rod

64: guide rod 68: stopper

68a: Operation frame 69: Cylinder

71: injection nozzle 72, 73: inlet pipe

81: supply pipe 82: air cooling device

83,84: Connector 85, 86: Solenoid valve

W ₁ : Flat glass W ₂ : Curved glass

S ₁ , S ₂ , S ₃ : first to third sections M: electric motor

TP: Double timing pulley TV: Timing belt

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a plan view of a feed roller extended in a heating chamber to a reheating chamber, which is a part of the present invention, and FIG. Fig. 4 is a cross-sectional view taken along the line XX in Fig. 1, and Figs. 5 to 8 are cross-sectional views taken along the line X-X in Fig. Fig. 9 is a gate operating state view of the reheating chamber of the present invention, Fig. 10 is a YY line cross-sectional view of Fig. 1 viewed from another angle of the quenching- 11 is a plan view showing an operating state of a motor for reciprocatingly operating the upper and lower air tanks in one direction of the quenching and tempering apparatus of the present invention,

The vertical frame 11 of the base 1 is supported on the ground and the upper frame 12 is connected to the heating chamber 2 and the curvilinear molding chamber 3, And the reheating chamber 4 is provided with a quenching and strengthening device 5 at a position adjacent to the discharge port 41. The quenching and tempering device 5 is installed in the reheating chamber 4,

A plurality of conveying rollers 13 are rotatably installed on the upper frame 12 at regular intervals so as to smoothly convey the flat glass W ₁ and the curved glass W ₂ to the conveying rollers 13 Are supported by a bearing housing or the like while being exposed to the outside through both side walls of the heating chamber 2, the curvilinear molding chamber 3 and the secondary heating chamber 4, and the both ends of the conveying rollers The double timing pulleys TP are connected to each other in a zigzag manner by a plurality of timing belts (TV) and are rotated at the same rotational speed. .

The feed rollers 13 are configured to rotate forward and backward by a single electric motor M. The feed rollers 13 are arranged to rotate forward and backward by one electric motor M. An entrance section S ₁ , The conveying rollers 13 installed in the section S ₂ and the reheating chamber section S ₄ perform forward rotation for a predetermined time according to forward and reverse rotation of the motor, And then the flat glass and the curved glass are transported to a certain distance by repeating the operation of rotating the flat glass and the curved glass for a predetermined time. On the other hand, the conveying rollers 13 of the curved forming room section S ₃ are configured to perform only the forward rotation operation by the one-way clutch bearing (not shown) and not to perform the reverse rotation operation.

As described above, the motor M that rotates the transport rollers 13 in the forward and reverse directions in the above-described manner is configured to automatically control the forward and reverse rotation operations of the transport rollers by a program input to a control device have.

Under the transfer roller 13 of the entering part section (S ₁₎ comprises: a flat glass (W in a state increased to a plurality of grooves (14) higher than the top of the roller upper surface is transferred is formed on a location that can accommodate the transfer roller ₁₎ and is supplied to the mold (15) to wait for a feeding operation is provided, said feed die (15) of the is composed so that the lifting operation by the feed cylinder 16, the working piston is the appearance of the supply cylinder 16 The supply mold 15 is elevated and the flat glass W ₁ is supported while the upper surface of the supply mold 15 stays at a position higher than the upper portion of the transfer roller and the flat glass W ₁ is supplied to the heating chamber 2 The piston of the supply cylinder 16 is immersed to lower the supply cylinder 16 so that the flat glass W ₁ placed on the upper surface of the supply cylinder 16 is placed on the transfer roller 13.

The inside of the heating chamber 2 is configured to heat the flat glass W ₁ while maintaining a high temperature atmosphere of 670 to 730 ° C (preferably around 700 ° C) of the heating chamber section (S _1), the transfer roller 13 is a forward rotation handed down flat glass (W ₁₎ for a certain period of time in which the transfer at a predetermined distance by rotating for the next predetermined time again flat glass (W ₁₎ that is installed on the The flat glass (W ₁ ) is transported at a constant distance, and the flat glass (W ₁ ) is transported at a constant distance. And the surface temperature of the glass W ₁ is maintained at 500 to 550 캜.

The reason for heating enters the heating chamber (2) from the surface, the following temperature until transferred to the curved surface forming chamber (3) flat glass (W ₁₎ to maintain the flat glass is 500~550 ℃ (W ₁₎ so In case of heating at a low temperature, a cracking phenomenon occurs due to deflection due to warping due to the brittleness of the glass, resulting in a high defective rate. On the contrary, when the glass is heated to a too high temperature, the surface melts, 3), the defect rate is also increased. Therefore, when the surface temperature of the flat glass W ₁ in the heating chamber 2 is heated to a temperature range of 500 to 550 ° C., the flat glass W _{1 is} formed into a curved surface, Lt; / RTI >

Next, the internal temperature of the curvilinear molding chamber 3 is configured to be maintained at 4500 to 500 캜 (preferably around 470 캜) lower than the internal temperature of the heating chamber 2.

When the flat glass W ₁ heated to maintain the surface temperature of 500 to 550 ° C. in the heating chamber 2 flows into the curved surface forming chamber 3 which is lower than the internal temperature of the heating chamber 2, The surface temperature of the flat glass when formed into a curved surface by the upper and lower curved forming dies after being introduced into the curved surface forming chamber 2 is 450 to 500 DEG C (preferably 470 DEG C The reason why the surface temperature of the flat glass before the curved surface forming operation is maintained at 450 to 500 DEG C is that the brittle property of the glass does not act when the curved surface is formed by the upper and lower curved surface forming molds, Because it is the optimal heating temperature that can occur well and does not cause mold marks on the glass surface.

The conveying rollers 13 of the curved forming chamber section S ₃ provided in the curved surface forming chamber ₃ are rotated only when the double timing pulley TP rotates forward as described above and the double timing pulley TP is rotated, And is held in a stopped state when it rotates in the reverse direction.

In addition, the curved surface forming chamber 3 inside which a plane glass (W ₁₎ for the molding of a curved surface, a bottom surface forming die (6a) (6b) are the phase, the downward lift operation is possibly installed, the top surface forming die (6a) is arranged to the lifting operation on the transfer roller 13 in its lower surface a curved surface forming chamber section (S ₃₎ in a state in the shaping surface is that as the concave surface molding surface containing recessed toward the mold center of the formation of While the lower surface forming mold 6b is configured to move up and down below the transfer rollers 13. The curved surface forming surface of the upper surface of the lower surface forming mold 6b is curved to the concave curved surface forming surface of the upper surface forming mold 6a A plurality of grooves 60b capable of receiving the conveying rollers 13 are formed in a state in which they are maintained at the same interval as the conveying rollers 13 in a state in which the conveying rollers 13 are formed with convexly curved convexly curved forming surfaces Have The width and the depth of each of the recesses 60b are larger than the diameter of the transfer roller 13 so that when the lower mold 6b is raised, The convex curved forming surface can be maintained in a raised state higher than the upper portion of the conveying roller 13 while accommodating the convex curved forming surface.

The upper curved forming die 6a is configured to move up and down by an upper elevating cylinder 61 fixed in an exposed state above the curved forming chamber 3. The piston of the upper elevating cylinder 61 is moved upward And the upper operation frame 62 fixedly attached to the front end of the piston passes through the heat insulating layer of the curvilinear molding chamber 3 and is provided on the upper curvilinear molding die 6a And both ends of the upper operation frame 62 are vertically movably mounted on the guide rods 64 installed vertically on the upper surface of the curvilinear molding chamber 3 Is installed.

Therefore, when the piston of the upper lifting cylinder 61 is operated to protrude and retract, the upper working frame 62 moves up and down in the vertical direction while taking the guide rod 64. Accordingly, So that the forming die 6a is moved up and down within the curved surface forming chamber 3.

The lower curved forming die 6b is configured to be operated to move up and down by a lower lifting cylinder 65 provided below the curved surface forming chamber 3. The lower lifting cylinder 65 is arranged so that the piston moves upward And the bottom of the curvilinear molding chamber 3 is slidably moved in a state in which the lower ends of the lower operation frame 66 are fixedly connected to both ends of the lower operating frame 66 fixedly attached to the piston distal end of the lower vertical cylinder 65, The lower curved surface forming mold 6b is connected to the upper end of a pair of lower working rods 67 that can penetrate as much as possible and both ends of the lower working frame 66 are connected to the upper A guide rod 64 supported on the frame of the vehicle 1 is provided so as to be movable up and down.

Accordingly, when the piston of the lower lifting cylinder 65 is projected and lifted vertically, the lower operating frame 66 starts to move up and down on the guide rod 64. Accordingly, the pair of lower working rods 67, So that the lower curved surface forming mold 6b is lifted and lowered.

In addition, a pair of which if the curved surface forming chamber 3, a position close to the side outlet (32) reaches the flat glass (W _1), the curved surface forming positions being transported aboard the conveyance roller 13 of the prevent longer feed stop And a pair of stoppers 68 are provided at both ends of an operating frame 68a vertically attached to the piston end of a cylinder 69 fixed to the bottom of the curvilinear molding chamber 3, And the pair of spoiler 68 is lowered to a lower position than the conveying rollers 13 when the piston of the cylinder 69 is operated to operate, While the upper end of the piston of the cylinder 69 is moved upward to a position higher than the upper portion of the transfer roller 13 so that the flat glass W ₁ can be accurately stopped at the curved surface forming position have.

On the other hand, the curved surface forming chamber 3 the lower surface forming die (6b) of the mold top surface while lifting on the transfer roller 13, a flat glass (W ₁₎ transferred to the curved surface forming chamber (3) to operate the rising mold ( 6a), the conveying rollers of each section are rotated forward and backward at a predetermined number of times or more, and then descended before one more forward rotation operation is started. Thus, the curved glass (W _2), a transfer roller 13, down time and to put it is transported to the flat glass (W _1), the curved surface forming chamber 3 located at the beginning of the heating chamber (2) curved glass (W ₂₎ on the And can be transferred to the reheating chamber (4) through the discharge port (32).

The combined operation of the upper and lower curved forming molds 6a and 6b is performed by first forming the upper curved surface forming mold 6a and then cooperating with each other in the order of ascending the lower curved surface forming mold 6b, It intended to form the W ₁₎ of a curved surface, and is configured to the descent order, too, and then the lower surface forming die (6b a top surface forming die (6a), up first) of the relaxation operation, thus forming die (6b the lower surface) forward rotation in this case fall to lay down the curved glass (W ₂₎ forming a curved surface on the transfer roller 13 curved glass (W ₂₎ feed rollers 13, since the state in which the peripheral portion in contact with the feed roller 13 in the The simultaneous transfer of the previous work can be performed smoothly.

The inner temperature of the reheating chamber 4 is maintained at 670 to 730 캜 (preferably around 700 캜) as in the heating chamber 2, the completed glass surface (W ₂₎ to the reheating chamber 4, the conditions and repeat the back-and-forth motion glass surface (W ₂₎ the surface temperature (preferably 500~550 ℃ in the process stays for a predetermined time or more times during the transfer to the Lt; RTI ID = 0.0 > 520 C) < / RTI >

A gate 43 operated by the gate cylinder 42 is provided in the discharge port 41 of the reheating chamber 4 and the gate 43 is connected to the curved glass W ₂ Is opened and closed only when the curved glass (W ₂ ) is discharged to the discharge port (41) while the discharge port (41) is closed while being reheated while reciprocating.

Therefore, the phenomenon that the internal heat of the reheating chamber 4 is discharged to the outside can be minimized, and the heat energy loss can be prevented.

The curved glass W ₂ discharged to the discharge port 41 of the reheating chamber 4 is immediately transferred to the quenching and tempering apparatus 5 and the quenching and tempering apparatus 5 is connected to the outlet of the reheating chamber 4, the glass surface (W ₂₎ discharged from the 41 serves to strengthen quenched with cold compressed air.

The lower base 51a of the quenching and tempering device 5 may be installed as if it extends from the base 1 but is shown as a separate structure in the present invention, A base 51b is provided.

Between the lower base 51a and the upper base 51b of the quenching and strengthening device 5 is provided a transfer roller 13 for each section provided in the heating chamber 2, the curved surface forming chamber 3 and the reheating chamber 4, A plurality of conveying rollers 53 which are horizontal with respect to the conveying rollers 53 are provided at predetermined intervals and the conveying rollers 53 are also configured to receive rotational power from a motor (not shown), which is a separate power source. The motor for driving the feed rollers 53 is constituted by a so-called high / low motor having a function of rotating the feed rollers quickly and slowly.

That is, when the curved glass W ₂ discharged from the discharge port 41 of the reheating chamber 4 is advanced to the inflow side of the transfer roller 53 of the quenching and tempering apparatus 5, the high / glass (W ₂₎ is when the quench strengthening (5) On the other hand, which causes rapid entry into the inner, curved glass (W ₂₎ is the one end of the entry condition to the inside of the quench strengthening device (5) by slowly driving surface glass (W ₂ ).

A lower support base 52a formed in a horizontal shape is provided below the lower base 51a of the quenching and strengthening apparatus 5 and an upper support base 52b provided on the upper side of the upper base 51b in a horizontal plane is provided _Two guide rails 53a and 53b are fixed to the upper and lower supports 52a and 52b so as to face each other in a direction perpendicular to the conveying direction of the curved glass W ₂ , Inside the lower and upper supports 51a and 51b, there is provided a support frame body 54 which reciprocates while being slidably supported by the guide rails 53a and 53b. The support frame body 54 Is configured to reciprocate by a motor 55.

The motor 55 is fixed to an intermediate portion of one side lower support 52a of the lower base 51a and has a free end of a connection link 55b connected to the cam mechanism 55a, When the motor 55 is driven, the connecting link 55b connected to the cam mechanism 55a is reciprocated while the supporting frame 54 is reciprocating, The reciprocating motion at this time is a direction orthogonal to the conveying direction of the curved glass W ₂ , and the motor 55 is continuously driven while the operation of reinforcing the curved glass is proceeded, The upper and lower air tanks 7a and 7b reciprocate in this manner because the amount of compressed air consumed is reduced, To be able to carry out the strengthening work All.

Upper and lower air tanks 7a and 7b are installed in a support frame 54 provided inside the quenching and strengthening apparatus 5. Each of the upper and lower air tanks 7a and 7b is provided with a transfer roller 53 The upper and lower air tanks 7a and 7b are provided with a large number of jet nozzles (not shown) facing each other on the upper and lower air tanks 7a and 7b, 71 are provided so as to be able to jet the cooled compressed air over the entire surface of the curved glass W ₂ to be conveyed to the conveying roller 53.

Each of the upper and lower air tanks 7a and 7b is configured to receive compressed air from the compressor 8. The supply pipe 81 of the compressor 8 is provided with air And the inlet pipe 72 of the upper and lower air tanks 7a and 7b to which the connecting pipes 83 and 84 connected to the air cooling device 82 are connected, (73) are provided with solenoid valves (85) and (86).

Said one solenoid valve 85, 86 is curved glass (W ₂₎ is open during the approach to the transfer to the transfer roller 53 onto the cool compressed air, the lower air tank (7a) of the quench strengthening (5) will be (7b) is supplied to the reinforced by the image of the curved glass (W ₂₎ being conveyed hameuroseo be sprayed to the spray nozzle 71 to the transfer roller 53, the lower surface of the cold compressed air, the hardening for a predetermined time The solenoid valves 85 and 86 are closed so that the compressed air can be stored in the compressor 8 tank while reducing the unnecessary consumption of the compressed air.

The reason why the compressed air for strengthening the surface of the curved glass W ₂ in the quenching and tempering apparatus 5 is cooled to 7 to 10 캜 as the air cooling apparatus 82 is that the curved glass W ₂ ) is usually lower than the temperature at which the glass is strengthened.

That is, the glass surface temperature at the time of glass strengthening is usually strengthened by spraying compressed air having a temperature condition of about 25 to 30 DEG C while maintaining about 650 to 700 DEG C or so.

However, in the present invention, the surface temperature of the curved glass W ₂ , which is reheated in the reheating chamber 4 and then conveyed to the conveying roller 53 of the quenching and tempering apparatus 5, is lower than the temperature at which it is normally strengthened, ° C, it is necessary to cool the compressed air to a relatively low temperature of 7 to 10 ° C in order to compensate for this, thereby reinforcing the curved glass (W ₂ ).

If the temperature of the compressed air injected to the surface of the curved glass W ₂ is lower than 7 캜, the surface of the curved glass W ₂ is cracked due to the rapid temperature change. On the other hand, The temperature is not lower than 10 DEG C, the reinforcement is not properly performed.

Hereinafter, the operation of producing the flat glass as the curved reinforced glass according to the present invention will be described by way of examples.

In general, the time required for heating the surface of glass having a thickness of 1 mm to about 500 to 550 ° C in a high-temperature atmosphere of 670 to 730 ° C takes about 40 seconds, and the thickness of the glass to be strengthened is at least 3 mm .

Therefore, in the embodiment of the present invention, a three-dimensional curved glass reinforced glass is formed by using a circular flat glass (W ₁ ) having a thickness of about 3 mm and a diameter of 600 to 800 mm or less as a material .

As shown in FIG. 2, the heating chamber section S ₂ of the transfer roller 13 is divided into four small sections, and the curved molding chamber section S ₃ is formed only in one small section And the reheating chamber section S ₄ is formed in a state partitioned into two small sections.

The flat glass and the curved glass are transported in a forward or reverse direction in small intervals of about 7 to about 8 seconds in each section S _2-4 according to forward and reverse rotation operations of the conveying rollers 13 .

Therefore, as shown in FIG. 3A, in a state in which four flat glasses W ₁ are respectively entered into four small sections partitioned in the heating chamber section S ₂ , the conveying rollers 13 move for 7 to 8 seconds 1 " plane glass is transferred to the curved surface molding chamber section S ₃ as shown in FIG. 3 (B). At this time, the curved surface molding chamber section S ₃ ) is conveyed to the curved forming room section S ₃ while the surface temperature is heated to 500 to 550 ° C. while staying in the heating chamber 2 for 112 to 128 seconds .

As shown in FIG. 3C, when the conveying roller 13 is reversely rotated once for seven to eight seconds, the "second to fourth flat glass" in each small section of the heating chamber section S ₁ is conveyed backward On the other hand, the "# 1 flat glass " transferred to the curved forming room section S ₃ is transferred to the upper and lower curved molding dies 6a and 6b while staying in the curved forming room section S ₃ , The curved glass W ₂ curved in a state of being raised is held in a state of holding the curved glass W ₂ above the conveying rollers 13.

3 (D), the lower curved surface forming mold 6b continues to rotate the conveying rollers 13 once in order to continue forwarding the "second to fourth flat glass" for 7 to 8 seconds, The lower curved molding die 6b is held while holding the glass W ₂ while the transporting roller 13 is moving backward the "second to fourth flat glass" as shown in FIG. 3 (E) And the curved glass W ₂ is lowered to the conveying roller 13.

Next, when the conveying roller 13 starts the forward rotation operation once, as shown in (F) of FIG. 3, a new "5th flat glass" is supplied on the conveying roller 13 in the entrance section S ₁ , In this state, when the "5th flat glass" is supplied, the conveying roller 13 is forwardly rotated once for 7 to 8 seconds and again for 7 to 8 seconds again. Therefore, all the flat glass in each of the entrance section S ₁ , the heating chamber section S ₂ and the curved molding chamber section S ₃ is forwarded to the two small sections, ) Is conveyed to the second sub-section of the reheating chamber section (S ₄ ) and the "second plane glass" is conveyed to the curved molding chamber section (S ₃ ).

When the " second flat glass " is transferred to the curved forming room section S ₃ as described above, the joint operation of the upper and lower curved forming molds 6a and 6b and the lower curved forming mold 6b ) proceeds repeatedly, as shown in this and while holding a curved glass (W ₂₎ forming a curved surface, and a transfer forward rotation of the conveying operation 3 after the reverse rotation of the roller (13) ((P) from H) .

A heating chamber section (S _1), each flat glass (W ₁₎ to the time staying in the heating chamber 2 is approximately 112-128 seconds (preferably around 120 seconds) transferred into as described above, surface heating chamber region ( S ₃ is formed into a curved glass W ₂ by the upper and lower curved molding dies 6a and 6b while the flat glass W ₁ is sequentially transferred one by one. time is approximately 28-32 seconds (preferably around 30 seconds), re-heating chamber section (S ₄₎ has a curved glass (W ₂₎ is transferred as soon before the simultaneous transfer surface that was being re-heated glass is rapidly cooled enhanced device and the state in which the transfer (5), wherein the re-heating time to stay chamber 4, a curved glass (W ₂₎ in the 42-48 seconds of a curved surface formed on the long, curved molding chamber 3 (preferably after 45 seconds) (W ₂ ) cooled to a slightly lower temperature (450 to 500 ° C) when heated to a temperature of 500 to 550 ° C And is conveyed to the quenching and tempering apparatus 5 in a reheated state.

On the other hand, the transfer to the quench strengthening device (5) curved glass (W ₂₎ is a transfer roller 53, upper and lower air tank (7a), (7b), the injection nozzle 71, which is a myriad formed in each while being transferred to The cold compressed air cooled to 7 to 10 DEG C is pushed to the injection pressure of 100 mb and the time for pumping cold compressed air to 100 mB is about 9 to 11 seconds, And is conveyed by the conveying mechanism 9 composed of a conveyor or the like while being slowly cooled.

According to the present invention as described above, since the stopper is provided inside the curvilinear molding chamber, which is installed in series with the heating chamber, for stopping the flat glass accurately at the curved surface forming position, It is possible to precisely stop the flat glass to be transferred to the curved surface forming chamber from the curved surface forming position between the upper and lower curved forming dies so that the curved surface forming operation can be accurately performed. The molding surface of the molding die is formed by a concave curved surface molding while the molding surface of the lower curved surface forming mold is formed by a convex curved surface forming surface so that the periphery of the curved glass whose curved surface molding is completed is brought into contact with the conveying roller, It is possible to smoothly transfer the glass, and to make the curved glass free from scratches In particular, it is effective to re-heat the curved glass formed in the curved surface in the curved surface molding room to reheat the glass at a temperature of about 500 to 550 ° C, which has an optimum condition suitable for rapid quenching, In addition, in the quenching and tempering apparatus, since the curved glass has a temperature slightly lower than the normal glass tempering condition, the compressed air is cooled to 7 to 10 ° C using an air cooling device so as to compensate for the tempering, It is possible to continuously produce three-dimensional curved reinforced glass by means of spraying with the jetting pressure determined by the jet nozzle of the air tank and rapidly cooling the curved glass and transporting the curved glass while being slowly cooled in the air, It is a useful invention that provides the advantage of being able to contribute to production.

Claims (8)

delete delete A plurality of feed rollers arranged at regular intervals on the upper frame of the base to feed the flat and curved glass; A heating chamber for heating a flat glass conveyed on the conveying roller; An upper and lower curved surface forming mold for curving the heated flat glass; upper and lower mold cylinders for raising and lowering the upper and lower curved surface forming molds; A curved surface molding chamber in which a stopper for precisely stopping the flat glass conveyed at the curved surface forming position is formed; Wherein the curved glass is curved in the curved surface forming room, A reheating chamber extending from the curvilinear molding room and reheating the curvilinear glass formed by the upper and lower curvilinear molding dies to a temperature slightly higher than the temperature of the curvilinear molding chamber; A gate which is operated to open the discharge port only when the curved glass reheated in the reheating chamber is discharged through the discharge port and to be closed when discharge of the curved glass is completed; A plurality of conveying rollers provided adjacent to the discharge port of the reheating chamber for conveying the curved glass discharged to the discharge port and a plurality of conveying rollers for uniformly discharging the compressed air toward both sides of the curved glass conveyed by the conveying roller. A quenching and tempering device provided with upper and lower air tanks in which injection nozzles are formed; Wherein the glass-reinforced glass manufacturing apparatus further comprises: delete The method of claim 3, The upper and lower air tanks provided in the quenching and strengthening apparatus are composed of four vertically arranged vertical columns independently provided inside the quenching and tempering apparatus and a pair of upper and lower frames connected to the upper and lower ends of the vertical columns, Wherein the spray nozzles are provided so as to face each other so as to uniformly jet the compressed air toward all the both side surfaces of the curved glass conveyed by the conveying rollers. The method of claim 3, Wherein the upper and lower air tanks are configured to be supplied with cold compressed air from an air cooling device installed on a supply pipe of a compressor which is installed independently from the quenching and strengthening device and to be sprayed on both sides of the curved glass. A device for manufacturing a curved reinforced glass. The method according to claim 3 or 6, A solenoid valve is provided at the inflow side of each of the upper and lower air tanks so that the cold compressed air compressed by the air cooling device is supplied to the upper and lower air tanks only when the curved glass is transferred by the transfer roller of the quenching- Wherein the glass-reinforced glass manufacturing apparatus is a three-dimensional glass-reinforced glass manufacturing apparatus. The method of claim 3, The supporting frame body installed to be reciprocally movable on the guide rails provided on both sides of the upper and lower support rods of the quenching and strengthening apparatus comprises a cam mechanism that is fixed to the output shaft of the motor fixed to the lower support rods, And the cold compressed air injected from the respective injection nozzles of the upper and lower air tanks is uniformly sprayed on both side surfaces of the curved glass.