KR100864956B1 - Manufacture apparatus for tempered glass and manufacture method for tempered glass - Google Patents

Abstract

An apparatus for manufacturing tempered glass and a manufacturing method of tempered glass using the same are provided to reduce the size of the apparatus, to reduce the manufacturing cost, to improve the quality of tempered glass, and to enhance the productivity in the process for tempered glass by unifying the manufacturing furnaces for tempered glass into a singular furnace. An apparatus for manufacturing tempered glass has a transfer unit(110) and a strengthening furnace(160). The transfer unit comprises a jig(120), a stand for hanging the jig(130) and a driving part for going up and down(140). The jig is a part for supporting a plate glass which is subjected to the inside of the strengthening furnace, and comprises a pair of rectangular side plates(122), a number of settlement poles(124) which connect the side plates, and a slot bar(126) which supports the plate glass. The stand for hanging the jig supports the hung jig, and comprises a pair of perpendicular arms(132) which support the upper part of the side plates on the jig, and a horizontal bracket(134) which fixes the upper part of the perpendicular arms. A hanger(136) is at the end of the bottom of the perpendicular arm, and supports the jig by hanging the jig from the upward. The driving part for going up and down is equipped in the casing of the furnace by means of a settlement bracket(141), and transfers the stand for hanging the jig in perpendicular direction. The driving part has a motorpulley(143), and an end of the driving part is supported by a unit-bearing(U). The other end of the driving part comprises a transfer screw(144), a belt(146), a nut-block(147) and a support plate(148). The driving part also has a guide-pole(149) which guides perpendicular movement of the support plate. The strengthening part has a main-body housing(150) which has a room and an opened upper part and a cover(152) which covers the opened upper part of the main-body housing. A manufacturing method of tempered glass using the apparatus comprises steps of: filling the inside of the strengthening furnace with potassium nitrate solution up to the bottom half of the furnace; hanging a plate glass on the jig and putting the plate glass in the strengthening furnace; heating the potassium nitrate solution in the furnace; preheating the plate glass with the steam heat from the heated potassium nitrate solution by maintaining the jig in the headspace of the strengthening furnace; transferring the plate glass downward to the bottom half of the strengthening furnace and impregnating the plate glass in the potassium nitrate solution for strengthening; and slowly cooling the plate glass on the upper space of the strengthening furnace after transferring the jig upward and stopping heating the potassium nitrate solution.

Description

Tempered glass manufacturing apparatus and manufacturing method for tempered glass using same {manufacture apparatus for tempered glass and manufacture method for tempered glass}

The present invention relates to an apparatus for manufacturing tempered glass, and more particularly, tempered glass capable of manufacturing tempered glass, which is used in liquid crystal display windows of various display devices such as mobile phones, portable information terminals (PDAs), navigation, etc., which have excellent hardness and strength. It relates to a manufacturing apparatus and a manufacturing method using the same.

In general, glass reinforcement is divided into physical reinforcement and chemical reinforcement.

Physical reinforcement is a method mainly used in manufacturing tempered glass doors, automotive glass, etc. as a method of strengthening the internal strength of the glass as it is quenched after heating a glass having a thickness of 5 mm or more to a temperature between 550 ° C. and 700 ° C. . However, this physical reinforcement is not applicable to thin glass (3mm), which cannot make a sufficient temperature difference between the glass surface layer and the center layer, and the glass has a low coefficient of thermal expansion. There is a disadvantage that each part does not have a uniform temperature difference, there is a possibility of deformation because the operation is performed at a relatively high temperature (near softening temperature).

On the other hand, chemical strengthening is to strengthen the glass by replacing the sodium ions in the glass and the potassium ions in the potassium nitrate solution by immersing the thin glass in the potassium nitrate solution at 450 ° C. for at least 3 hours. It is used to strengthen.

The chemical strengthening is to strengthen the glass through ion exchange, both thin glass and glass of complex shape can be strengthened, there is no fear of deformation during operation, with the advantage of high precision, superior in physical strength in terms of strength, after strengthening There is an advantage in that cutting and the like are possible.

The above-mentioned chemical strengthening method first heats the glass to be strengthened below the transition temperature in the range of 300 to 450 ° C., and on the other hand, the potassium nitrate salt is melted at a temperature of 380 ° C. or higher to preheat the glass. After immersing in, the compressive stress layer was formed on the surface of the glass and maintained for a predetermined time.

However, according to this method, a long time of several hours to several tens of hours is required in order to obtain a practical surface compressive stress, which has a problem in that the productivity is considerably lowered. Even though some impurities are contained or contaminated in the potassium nitrate salt, the impurities are contained in the glass surface layer. There is a problem in that it is adsorbed on the extremely low ion exchange.

That is, the existing tempered glass manufacturing technology is generally made on a small scale, and the manufacturing apparatus is also made by hand, the uniformity of the tempered glass quality cannot be obtained because the manufacturing of the tempered glass is carried out by a small manual work. Too many occurrences of defective products are produced during manufacture, and the manufacturing workers are exposed to dangers, and thus work involves large and small accidents.

Therefore, in order to solve this problem, tempered glass has been recently improved through a method of promoting the ion exchange reaction rate between sodium ions and potassium ions on the glass surface layer by ion exchange by containing a small amount of molten stone salt in the molten potassium salt-containing melt. A manufacturing apparatus which can manufacture is proposed.

1 is a front view showing such a conventional tempered glass manufacturing apparatus, referring to this, the conventional manufacturing apparatus is a preheating furnace 10 that can preheat the original glass in advance, and the original glass through the ion replacement is made A salt bath (20) to be prepared, a slow cooling furnace (30) for slowly cooling the strengthened original glass to remove stress, a hot water furnace (40) and a hot water reactor (50) for cleaning the slow cooled original glass, and washing After having a plurality of furnaces, such as a drying furnace 60 for drying the dried glass with hot air, and consisting of a transfer unit 70 for moving the plurality of furnaces in the vertical and horizontal directions, chemical strengthening of the glass Was done automatically.

However, the manufacturing apparatus 1 as described above has a large number of furnaces for producing tempered glass, resulting in an enlargement of the manufacturing apparatus. There was a disadvantage to be restricted, resulting in an increase in the manufacturing cost of the manufacturing apparatus.

In addition, the original glass which is moved to a plurality of furnaces by the transfer unit has a disadvantage in that a small amount of impurities are adsorbed to the surface layer of the glass during movement into each furnace, thereby contaminating the glass surface and degrading the quality.

The present invention has been made to solve the problems described above, the object of the present invention is to consist of a plurality of existing furnaces (통합) by integrating the manufacturing apparatus for manufacturing tempered glass all processes in a single furnace (爐) Tempered glass manufacturing apparatus for minimizing the defect rate by minimizing the manufacturing apparatus and reducing the manufacturing cost of the manufacturing apparatus and at the same time to prevent the adsorption of impurities on the glass surface during the process for producing tempered glass and It is an object to provide a manufacturing method using the same.

The objects and advantages of the present invention will be described in more detail below, and will be further embodied by the examples. Further objects and advantages of the invention may be realized by the means indicated in the claims and combinations thereof.

In order to achieve the above object of the present invention, the present invention is a tempered glass manufacturing apparatus, a reinforcing furnace for reinforcing plate glass, a jig in which the plate glass to be put into the reinforcement furnace is reinforced, and the jig is hanged from above It includes a jig hanger that is moved up and down in a vertical up and down direction while supporting, and a lift drive unit for moving the jig hanger up and down in a vertical up and down direction, the reinforcing passage is stored in the lower half of the potassium nitrate solution inside the outer wall circumference The heating part is provided with a heating part for strengthening the plate glass immersed in the potassium nitrate solution by ion exchange as it heats the potassium nitrate solution, and the upper half is transferred from the potassium nitrate solution heated in the lower heating part. Reinforced oil, characterized in that consisting of a preheat cooling unit for preheating or cooling the plate glass by steam heat The present invention provides a production device.

In addition, in the present invention, the jig is made of a pair facing each other and a rectangular side plate formed with a locking groove so as to be supported at the end of the jig hanger, respectively, and a plurality of connecting the pair of side plates And a fixed bar and a slot bar having a rod-shaped slot having a V-shaped seating groove formed at a predetermined interval so as to support the plate glass without shaking.

In addition, in the present invention, the jig hanger is a pair of vertical arms for holding the upper side of both side plates of the jig, a "B" shaped horizontal bracket for connecting and fixing the vertical arm from the top, the one It characterized in that it comprises a hook for hanging the jig at each end of the vertical arm of the pair.

In addition, in the present invention, the elevating drive unit is provided with a motor providing a driving force, a motor pulley rotatably coupled to the motor, a screw thread on the outer circumferential surface, is supported by a unit bearing so as to be self-rotating, the motor A transfer screw arranged vertically upright through the fixing bracket, a belt pulley coupled to the lower end of the transfer screw, a belt connecting the motor pulley and the belt pulley, and an inner circumferential surface thereof so as to be rotated by the rotation of the screw; The nut block is provided with a screw thread corresponding to the thread of the outer peripheral surface of the transfer screw, the front bracket is fixed to the horizontal bracket of the jig, characterized in that it comprises a support plate on which the nut block is fixed. Glass manufacturing equipment.

In the present invention, the elevating driving unit is coupled to the left and right both ends of the support plate is characterized in that it further comprises a guide guide rod for vertical movement of the support plate.

In addition, in the present invention, the heating heater is characterized in that the buried heater is embedded in the lower left and right sides of the reinforcement furnace, and embedded in the bottom surface.

In another aspect, the present invention is the step of filling the inside of the reinforcing furnace in which the heating heater is embedded only in the inner wall and bottom of the lower half of the center to the water level of the lower half of the reinforcement furnace, and mounting the plate glass to be strengthened in the jig and put into the reinforcing furnace And heating the potassium nitrate solution by applying power to the exothermic heater, and stopping the jig for a predetermined time in the upper half space of the reinforcing furnace, by the steam heat delivered from the heated potassium nitrate solution in the lower half of the reinforcing furnace. Preheating the plate glass; lowering the jig to the lower half of the reinforcing furnace; immersing the plate glass in a heated potassium nitrate solution for a certain time to strengthen the plate glass; and after raising the jig for a predetermined time in the upper half space of the reinforcing furnace. Gradually cooling the pane by stopping and stopping heating of the potassium nitrate solution It provides a method for producing tempered glass comprising a.

As described above, the tempered glass manufacturing apparatus according to the present invention consists of a plurality of furnaces (기존) existing by integrating the manufacturing apparatus for manufacturing tempered glass so that all the processes are performed in a single furnace, the manufacturing apparatus The miniaturization and manufacturing cost of the manufacturing apparatus can be reduced, and all processes are performed in a single furnace, thereby improving the quality of the product by preventing impurities from adsorbing onto the glass surface from the outside. There is an advantage that the glass of high strength can be easily manufactured.

Hereinafter, the configuration and effect of the tempered glass manufacturing apparatus according to the present invention will be described in more detail with reference to the preferred embodiments and the accompanying drawings.

2 is an overall perspective view of the tempered glass manufacturing apparatus according to the present invention, Figure 3 is a perspective view schematically showing a transfer unit of the tempered glass manufacturing apparatus according to the present invention, Figure 4 is a tempered glass manufacturing apparatus according to the present invention 5 and 6 are perspective views schematically showing the elevating driving unit of the tempered glass manufacturing apparatus according to the present invention, Figure 7 is a tempered glass manufacturing apparatus according to the present invention Figure 8 is a perspective view showing the jig used, Figure 8 is a side view schematically showing the side of Figure 7, Figure 9 is a perspective view schematically showing a reinforcing furnace of the tempered glass manufacturing apparatus according to the present invention, Figure 10 is a transfer unit Is a perspective view showing a state in which the jig is coupled, Figure 11 is a perspective view showing a state where the jig is located in the reinforcing furnace and Figures 12a to 12e is a tempered glass according to the present invention It is a front view which shows schematically the operating state of a manufacturing apparatus.

As shown in Figures 2 to 4, the tempered glass manufacturing apparatus according to the present invention includes a transfer unit 110, the reinforcing furnace 160 large.

As shown in FIGS. 2 to 4, the transfer unit 110 is a portion for transferring the plate glass A to be strengthened in the up and down direction in the reinforcing furnace 160 to be described later, and generally has a rectangular metal casing. Located in the 110a is configured to move up and down within the reinforcing furnace 160, the preformed plate glass A according to the user's selection. The transfer unit 110 includes a jig 120, a jig hanger 130, and the lifting drive unit 140.

As shown in FIGS. 3 and 4 and 7 and 8, the jig 120 is a part that firmly mounts and supports the plate glass A to be inserted into the reinforcement furnace to be strengthened so as not to shake. A pair of rectangular side plates 122 positioned, a plurality of fixing rods 124 connecting the pair of side plates 122, and a cross section thereof to support the plate glass A without shaking. The mounting recess 126a having a shape includes a rod-shaped slot bar 126 formed at a predetermined interval. Here, a hook groove 122a is formed on the pair of side plates 122 to be supported by an end of the jig hanger 130 to be described later, specifically, an end hook 136 of the jig hanger 130. do.

In addition, a plurality of slot bars 126 are coupled between a pair of side plates 122 facing each other to support the plate glass A, and a predetermined angle so that the plate glass A is easily fitted. A plurality of V-shaped seating grooves 126a are formed along the longitudinal direction to prevent the plate glass A from being detached during the reinforcing process of the plate glass A and at the same time preventing the surface from being damaged.

The jig hanger 130 is a portion for supporting the jig 120 from above, as shown in FIGS. 2 to 4, as long as the jig holder 130 hangs the upper portions of both side plates 122 of the jig 120. A pair of vertical arms 132, and the horizontal bracket 134 of the "C" shape for connecting and fixing the vertical arm 132 from the top.

Here, the vertical bracket 134 is fixedly connected to one side of the support plate 148 of the elevating driving unit 140, which will be described later to fix the vertical arm 132 is raised and lowered into the reinforcement path 160, the support One end coupled to the plate 148 is located inside the casing 110a, and the other end fixed to the vertical arm 132 is formed to be exposed to the outside through the long groove 110b formed on the front surface of the casing 110a. do.

In addition, hooks 136 are inserted into the hook grooves 122a formed at both side plates 122 of the jig 120, respectively, and the hooks 136 for hanging the jig 120 from an upper portion of the vertical arm 132. It is provided. Hook 136 is provided at the lower end of the vertical arm 132 of the jig hanger 130 is formed in a U-shape so that the jig 120 is detachably coupled to both side plates of the jig 120 ( By engaging so as to be inserted into the hook groove 122a formed in the 122, the jig 120 is supported by hanging from above.

As shown in FIGS. 4 and 5, the elevating driving unit 140 is fixed to the inside of the casing 110a by a fixing bracket 141 to transfer the jig hanger 130 in the vertical direction. As the motor 142 to provide a driving force, a motor pulley 143 rotatably coupled to the motor 142, and a screw thread on the outer circumferential surface, one end of which is installed through one side of the upper surface of the casing (110a) And a conveying screw 144 vertically arranged vertically through the fixing bracket 141 so as to be rotatable and supported by the unit bearing U to be rotatable, and to be rotated by the rotation of the motor 142 at the other end. The belt pulley 145 coupled to the lower end of the transfer screw 144 and the belt 146 connecting the motor pulley 143 and the belt pulley 145 and the outer peripheral surface of the transfer screw 144 on the inner circumferential surface Nut block with thread corresponding to thread (14) 7) and the front surface of the jig hanger 130, the horizontal bracket 134 is fixedly connected, the back includes a support plate 148 is fixed to the nut block 147.

Through this configuration, when the motor 142 is rotated, as the motor pulley 143 is rotated, the belt 146 wound on the motor pulley 143 is rotated to rotate the belt pulley 145 on the opposite side. . Accordingly, as the transfer screw 144 coupled to the belt pulley 145 rotates itself, the nut block 147 is rotated up and down by a screw action. As already mentioned, the nut block 147 is fixedly coupled to the rear surface of the support plate 148 as the nut block 147 is raised and lowered. The support plate 148 is also raised and lowered together, and the jig hanger 130 is fixedly coupled to the front of the support plate 148 so that the jig hanger 130 is lifted up and down when the support plate 148 is lifted.

Here, the elevating drive unit 140 preferably further includes a guide rod 149 for guiding the vertical movement of the support plate 148. 3 and 4, the guide rod 148 is coupled to the left and right ends of the support plate 148 to guide the vertical movement of the support plate 148, the transfer screw 144 It is installed in parallel with, one end is attached to the inner upper surface of the casing (110a) and the other end is fixed to the portion adjacent to the fixing bracket 141.

And, the elevating drive unit 140 is located inside the casing (110a), jig hanger 130 is coupled to the front side of the support plate 148 of the elevating drive unit 140 is shown in Figure 2 The casing 110a is positioned outside the casing 110a through the long groove 110b formed at one front surface of the casing 110a so that the casing 110a can be vertically lifted.

In the transfer unit 110 having the above-described configuration, when the motor 142 is rotated by a power source, the transfer screw 144 connected by the belt 146 rotates, and accordingly, shown in FIGS. 3 and 4. As described above, the support plate 148 coupled through the nut block 147 on the transfer screw 144 is guided by the guide rod 149 to be vertically rotated up and down. In this case, the jig 120 and the jig 120 are fitted to the hook 136 provided at the lower end of the jig hanger 130 so as to securely support the glass plate A by fitting. Plate glass (A) mounted on the 120 is to be lowered into the reinforcing furnace 160.

Meanwhile, as illustrated in FIGS. 9 to 11, the reinforcing furnace 160 is positioned on one side of the front surface of the transfer unit 110 and is plate glass A which is vertically transferred up and down by the elevating driving unit 140. As a part for strengthening), it is composed of a substantially rectangular parallelepiped-like enclosure like a conventional heating furnace, but is composed of a lower heating part 170 and an upper preheating cooling part 180 based on the center.

The reinforcing furnace 160 is positioned on one side of the casing 110a surrounding the transfer unit 110, and has an upper portion of the main body housing 150 and an upper portion of the main body housing 150 having a predetermined accommodation space therein. A cover 152 covering the opening. As shown in FIG. 10, the cover 152 is provided at the end of the vertical arm 132 when the vertical arm 132 of the jig holder 130 is penetrated and the jig holder 130 is raised. The hook 136 is raised together with the jig hanger 130, and when descending, as shown in FIG. 11, the structure is lowered to the upper surface of the main housing 150 and seated in the opening formed in the upper surface. . At this time, even after the cover 152 is seated on the upper surface of the main housing 150, the transfer unit 110 is the lower half of the reinforcing furnace 160 provided inside the main housing 150, preferably heating will be described later The structure descends to the unit 170.

In addition, the upper surface of the cover 152 may be provided with a handle 152a so that the user can directly lift the cover 152 according to the user's selection, so that the inside of the reinforcing furnace 160 can be visually checked. have.

As already mentioned, the reinforcing furnace 160 is composed of a heating unit 170 and the preheat cooling unit 180.

The heating unit 170 is a lower half of the reinforcing furnace 160 of the main body housing 150, and stores the potassium nitrate solution as a reinforcing agent therein, and heats the potassium nitrate solution to a high temperature of 450 ° C. It is a zone for strengthening the plate glass A immersed by the unit 110 through ion substitution.

As such, in order to heat the potassium nitrate solution stored therein, the heating unit 170 of the reinforcing furnace 160 preferably heats up the lower half of the lower left and right sides of the reinforcing furnace 160 and the bottom portion, respectively. Is provided.

The heating heater 172 is wound a plurality of heating wires (172a) that can generate heat by a power source therein, and can increase the temperature inside the heating unit 170 at a high temperature of about 400 ℃ ~ 500 ℃ at room temperature It is configured to. The heating heater 172 may be used all the heaters used in ordinary electric furnaces, etc., in particular, it is preferable that the heating wire immersion heater. These heaters are already known configurations, and further description thereof will be omitted.

Meanwhile, as already mentioned, potassium nitrate solution (KNO 3) is stored in the heating unit 170 in which the exothermic heater 172 is located. The potassium nitrate solution (KNO₃) is to cause ion exchange between sodium (Na +) ions and potassium (K +) ions in the potassium nitrate solution on the surface of the plate glass (A), and the exothermic heater 172 ) Is heated to a temperature of about 450 ℃. At this temperature, the sodium ions of the glass are released and the potassium ions of the potassium nitrate solution are introduced to cause ion exchange, thereby forming a compressive stress layer on the glass surface to form tempered glass having a high surface density.

As such, the plate glass (A) is immersed in the potassium nitrate solution heated to the 450 ℃ temperature in the heating unit 170 is strengthened, the plate glass (A) at room temperature suddenly heated to a high temperature of 450 ℃, Quenching can cause damage and breakage of the glass tissue. Therefore, to prevent this problem, the reinforcing furnace 160 according to the present invention includes a preheating cooling unit 180.

The preheat cooling unit 180 is an upper half section of the reinforcing furnace 160 located above the heating unit 170 in which the potassium nitrate solution is stored. The preheating cooling unit 180 preheats or cools the plate glass A transferred by the transfer unit 110. do.

The inner surface of the reinforcing furnace 160 of the preheat cooling unit 180 is not provided with a separate heating heater 172 such as the heating unit 170, and is heated in the heating unit 170 of the reinforcing furnace 160. By exposing the heat of steam generated from the potassium nitrate solution to the surface of the plate glass (A), it is possible to preheat and cool the plate glass (A) at a temperature of 350 ℃ ~ 380 ℃ lower than the ion exchange reaction temperature of 450 ℃

That is, when the preheat cooling unit 180 heats the potassium nitrate solution by about 450 ° C. by the exothermic heater 172 provided in the heating unit 170, the internal temperature is about 350 from room temperature by steam generated from the potassium nitrate solution. It rises to the temperature of ° C-380 ° C. In this state, when the plate glass A is transferred to the preheat cooling unit 180 by the transfer unit 110, the plate glass A is stopped in the preheat cooling unit 180 for a predetermined time. Allow to warm up. Since the pre-heated plate glass (A) is lowered by the transfer unit 110 and immersed in the high temperature potassium nitrate solution stored in the heating unit 170 by the ion exchange of potassium ions of potassium nitrate solution and sodium ions on the glass surface Strengthening is done. After the glass is strengthened by the transfer unit 110 to the upper portion of the reinforcing furnace 160, that is, the preheat cooling unit 180, and then formed by the steam heat generated from the potassium nitrate solution about 350 ℃ ~ 380 By gradually lowering the temperature to about 100 ° C., the heated glass is cooled to prevent deformation of the glass and at the same time remove stresses remaining in the glass.

As such, the reinforcing furnace 160 used in the present invention is preheated, heated and cooled through a single furnace, and cooled and cleaned by steam of potassium nitrate solution in the reinforcing furnace 160, The dust of the potassium nitrate solution on the jig 120 or the like of the transfer unit 110 can be cleaned. In other words, the existing tempered glass manufacturing apparatus uses a drying furnace after cleaning the foreign substances adsorbed on the glass surface and the dust of potassium nitrate solution through the hot water furnace and the hot water furnace as the preheating furnace, the heating furnace, and the cooling furnace are transferred. Although it was intended to dry, the tempered glass manufacturing apparatus according to the present invention prevents foreign matters from adsorbing on the glass surface by transporting the furnace and the furnace by performing all processes in a single furnace, and preheating and cooling the dust of potassium nitrate solution. By allowing the steam of 180 to be cleaned simultaneously with cooling, a separate cleaning furnace is not necessary.

On the other hand, the control unit for controlling the operation of the heating and heating unit 170 of the heating unit 170 and the driving unit of the transfer unit 110 on one side of the front of the casing (110a) provided with the transfer unit 110 therein 190 is provided.

The control unit 190 transmits a position switch signal to the control unit 190 according to the position of the support plate 148, which is raised and lowered to control the operation of the motor 142 of the lifting and lowering unit 140 (not shown). C) is installed at both ends of the guide rod 149 for guiding the support plate 148. That is, the limit switch detects the position of the support plate and transmits the position information signal to the controller to stop and drive the motor to transfer the jig to a desired position. In addition, a temperature sensor (not shown) is provided at one side of the reinforcing furnace 160 to control the heating heater 172 operation of the heating unit 170. The temperature sensor (not shown) detects the temperature inside the reinforcing furnace 160 in real time, and transmits the temperature information signal to the controller 190 to a temperature required for reinforcing plate glass. Adjust it to keep it constant.

The control unit 170 may sense a limit switch (not shown) capable of detecting the position of the transfer block 134 of the transfer unit unit 110 and a temperature of the heating unit 150 of the heating furnace 140. It is provided with a temperature sensor (not shown), the limit switch is installed in a position that can be in contact with the transport block 134 transported along the guide rod (134c) by the drive according to the position of the transport block 134 The motor 122 of the means 120 rotates or reverses or temporarily pauses. The temperature sensor is installed inside the heating furnace 140 to control the heating heater 152 of the heating unit 150. As a result, the internal temperature of the heating furnace 140 is controlled.

The operation of the tempered glass manufacturing apparatus according to the present invention made of such a configuration, and with reference to Figure 12a to 12e will be described a manufacturing method using a tempered glass manufacturing apparatus according to a preferred embodiment of the present invention.

First, the potassium nitrate solution is filled up to the lower half level only in the reinforcement furnace 160 in which the heating heater 172 is embedded only in the lower half inner wall and the bottom of the reinforcement furnace 160.

Thereafter, the plate glass A is securely fitted to the seating groove 126a of the jig 120, and then the jig 120 is introduced into the reinforcing furnace. At this time, as the motor 142 of the elevating driving unit 140 rotates, the transfer screw 144 connected by the motor 142 and the belt 146 rotates to lower the support plate 148 and support accordingly. The jig hanger 130 and the jig 120 coupled to one side of the plate 148 are moved to the preheat cooling part 180 of the reinforcing furnace 160.

Thereafter, the power is applied to the heating heater 172 to heat the heating unit in which the potassium nitrate solution is stored, and then the jig 120 is stopped for a predetermined time in the upper half space of the reinforcing furnace 160, thereby lowering the lower half of the reinforcing furnace 160. The plate A is preheated by steam heat transferred from the heated potassium nitrate solution at. That is, by heating both side walls and the bottom surface of the reinforcing furnace 160 in which the potassium nitrate solution is stored using the heat generating heater 172 provided in the lower half of the reinforcing furnace 160, that is, the heating unit 170, the temperature of 400 ° C. to 500 ° C. The temperature is increased to allow the pane to be preheated by the heat of steam from the potassium nitrate solution. At this time, the temperature of the preheat cooling unit 180 is a temperature of about 350 ℃ ~ 380 ℃.

Subsequently, the plate glass A preheated in the preheat cooling unit 160 is lowered to the lower half of the reinforcement furnace by the transfer unit 110 and immersed in the potassium nitrate solution stored in the heating unit 150 for a predetermined time through ion exchange. The pane A is to be strengthened. That is, the plate glass A preheated for a predetermined time in the preheating cooling unit 180 based on the set value input to the control unit 190 is the elevating driving unit 140 and the jig hanger 130 according to the signal of the control unit 190. It is transferred to the lower by the immersion in the potassium nitrate solution stored in the heating unit 170. At this time, when the plate glass (A) is immersed in a potassium nitrate solution raised to a temperature of 400 ℃ ~ 500 ℃ for a predetermined time, the sodium ions on the surface of the plate glass (A) and the potassium ions of the potassium nitrate solution bar bar, the plate glass (A) Small sodium ions distributed on the surface are released, and potassium ions in the potassium nitrate solution are inserted in place, thereby forming a compressive stress layer on the glass surface, thereby forming tempered glass having an increased surface density.

Thereafter, the plate glass A is gradually cooled by steam generated in the potassium nitrate solution by stopping the heating of the potassium nitrate solution by raising the jig 120 and stopping for a predetermined time in the upper half space of the reinforcing furnace 160. And washing. That is, by rotating the transfer screw 144 connected to the motor 142 to allow the jig hanger 130 and the jig 120 to rise vertically, the strengthened plate glass (A) to the preheating cooling unit 180 To be transported. Subsequently, the plate glass A is cooled and cleaned by the steam heat that gradually reduces the steam generated in the potassium nitrate solution by timing the operation of the heating heater 172 of the heating unit 170 in which the potassium nitrate solution is stored. At this time, the plate glass (A) strengthened at a high temperature may cause breakage, such as deformation of the glass surface when rapid cooling, the temperature of the preheat cooling unit 160 is gradually lowered from 350 ℃ to 380 ℃ to reach 100 ℃ By doing so, the heated plate glass A can be cooled and can be safely cleaned without deformation by steam.

Thereafter, the tempered glass is drawn out to the outside of the reinforcement furnace 160 by the transfer unit 110, and then separated and dried by the jig 120 from the jig holder 130 and stored.

Although the tempered glass manufacturing apparatus of the present invention has been described above with reference to a preferred embodiment of the present invention, it will be apparent to those skilled in the art that modifications, changes, and various modifications can be made without departing from the spirit of the present invention.

1 is a front view showing such a conventional tempered glass manufacturing apparatus;

2 is an overall perspective view of a tempered glass manufacturing apparatus according to the present invention;

Figure 3 is a perspective view schematically showing a transfer unit of the tempered glass manufacturing apparatus according to the present invention;

Figure 4 is a perspective view schematically showing a state in which the transfer unit of the tempered glass manufacturing apparatus according to the present invention is lowered;

Figure 5 and Figure 6 is a perspective view schematically showing the elevating driving unit of the tempered glass manufacturing apparatus according to the present invention;

7 is a perspective view showing a jig used in the apparatus for producing tempered glass according to the present invention;

8 is a side view schematically showing the side of FIG. 7;

9 is a perspective view schematically showing a strengthening furnace of a tempered glass manufacturing apparatus according to the present invention;

10 is a perspective view showing a state in which the jig is coupled to the transfer unit,

11 is a perspective view showing a state in which the jig is located in the reinforcing furnace; And

12A to 12E are front views schematically showing a state in which the apparatus for producing tempered glass according to the present invention operates.

<Explanation of symbols on the main parts of the drawing>

110: transfer unit 110a: casing

110b: long groove 120: jig

122: side plate 122a: hook groove

124: fixing rod 126: slot bar

126a: settling groove 130: jig hanger

132: vertical arm 134: horizontal bracket

136: hook 140: lifting and lowering drive

141: fixing bracket 142: motor

143: motor pulley 144: transfer screw

145: belt pulley 146: belt

147: nut block 148: support plate

149: guide rod 150: main body housing

152: cover 152a: handle

160: reinforcement furnace 170: heating unit

172: heating heater 172a: heating wire

180: preheat cooling unit 190: control unit

A: Plate glass U: Unit bearing

Claims (7)

As a tempered glass manufacturing apparatus, A reinforcing furnace 160 for reinforcing the plate glass A; A jig 120 into which the plate glass A to be inserted and reinforced in the reinforcing furnace 160 is mounted; A jig hanger 130 which moves up and down in a vertical up and down direction while supporting the jig 120 from above; Including the lifting drive unit 140 for moving the jig hanger 130 in the vertical up and down direction, The reinforcing furnace 160 stores the potassium nitrate solution in the lower half and is provided with a heating heater 172 along the outer wall circumference to heat the potassium nitrate solution (A) is immersed in the potassium nitrate solution to ion exchange It consists of a heating unit 170 to be reinforced by, the upper half to the preheating cooling unit 180 for preheating or cooling the plate glass (A) by the steam heat delivered from the heated potassium nitrate solution in the heating unit 170 of the lower portion Tempered glass manufacturing apparatus, characterized in that configured. The method of claim 1, wherein the jig 136 is A rectangular side plate 136a formed of a pair facing each other and having a locking groove 137 formed at an upper end thereof so as to be supported at an end of the jig holder 130; A plurality of fixing rods (136b) connecting the pair of side plates (136a); Tempered glass manufacturing apparatus, characterized in that consisting of a rod-shaped slot bar (136c) formed in a predetermined interval the mounting groove (138) having a V-shaped cross section to support the plate glass (A) without shaking. The method of claim 2, wherein the jig holder 130 A pair of vertical arms 132 for supporting the upper portions of both side plates 122 of the jig 120, A horizontal bracket 134 having a "c" shape for fixing and connecting the vertical arm 132 therefrom; Tempered glass manufacturing apparatus characterized in that it comprises a hook (136) for hanging the jig 120 at each end of the pair of vertical arms (132). The method of claim 1, wherein the elevating drive unit 140 A motor 142 providing a driving force A motor pulley 143 rotatably coupled to the motor 142; A screw provided on an outer circumferential surface, supported by a unit bearing U to be rotatable, and vertically arranged through a fixing bracket 141 so as to be rotated by the rotation of the motor 142. 144); A belt pulley 145 coupled to the lower end of the transfer screw 144; A belt 146 connecting the motor pulley 143 and the belt pulley 145; A nut block 147 having a thread corresponding to a thread of an outer circumferential surface of the transfer screw 144 on an inner circumferential surface thereof; Tempered glass manufacturing apparatus, characterized in that the front bracket is fixed to the horizontal bracket 134 of the jig hanger 130, the back side includes a support plate 148 is fixed to the nut block (147). The method of claim 4, the elevating driving unit 140 Tempered glass manufacturing apparatus is coupled to the left and right both ends of the support plate 148 further comprises a guide guide rod (149) for vertical movement of the support plate (148). The method of claim 1, The heating heater 172 is a tempered glass manufacturing apparatus, characterized in that the buried heater is installed buried in the lower left and right both sides and the bottom of the reinforcing furnace 160. Filling potassium nitrate solution to the lower half level only in the reinforcing furnace 160 in which the heating heater 172 is embedded only in the lower half outer wall and the bottom of the center; Mounting the plate glass (A) to be strengthened on the jig (120) and injecting it into the reinforcing furnace (160); Heating the potassium nitrate solution by applying power to the exothermic heater 172; Preheating the plate glass (A) by steam heat transferred from the potassium nitrate solution heated in the lower half of the strengthening furnace (160) by stopping the jig (120) in the upper half space of the strengthening furnace (160); Lowering the jig 120 to the lower half of the reinforcing furnace 160 to immerse the plate glass A in a heated potassium nitrate solution for a predetermined time to strengthen the plate glass A; After raising the jig 120, the tempered glass manufacturing method comprising the step of slowly cooling the plate glass (A) by stopping for a predetermined time in the upper half space of the tempering furnace (160) and stopping the heating of the potassium nitrate solution.

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