Production process and production equipment of 15-19mm borosilicate glass super-thick plate

Abstract

The invention discloses a production process and production equipment of a 15-19mm borosilicate glass super-thick plate, and relates to the technical field of float glass, and the production process comprises the following steps: 1, raw material preparation, 2, melting, 3, molding and annealing, and 4, cold end treatment: after a glass tape enters a cold end unit, carrying out cold end treatment on the glass tape; sequentially performing full-automatic defect monitoring, speed measurement, longitudinal cutting, transverse cutting, pre-splitting, transverse breaking, separation, edge breaking and longitudinal separation to form an original sheet; a pre-splitting process is added, after a glass tape is transversely cut, a laser is used for scanning along a tangent line to generate microcracks of 0.1-0.3 mm, the transverse breaking direction is guided, the crack initiation difficulty is reduced, the randomness of a crack initiation point is eliminated, a plurality of sets of jacking mechanisms are further adopted for synchronous jacking in the transverse breaking process, initial cracks are induced through the jacking mechanism in the middle, and the crack initiation difficulty is reduced. And a pre-splitting line generated in the pre-splitting procedure is accurately matched, and stress dispersion is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of float glass, in particular to a production process and production equipment of 15-19mm borosilicate glass super-thick plate. BACKGROUND

[0002] The float glass generally defines the thickness greater than 8mm as thick plate, and the difficulty of thick plate production is mainly in the control of process. Since the glass liquid flowing into the tin bath from the melting furnace is continuous and uninterrupted, the quality of the produced glass does not fluctuate with the change of thickness in the absence of other factors, and therefore the quality of the super-thick plate production mainly depends on the processes of forming, annealing, cold end treatment and the like.

[0003] The cold end treatment includes a transverse bending process after the cutting of the glass ribbon, and in the process, due to the large thickness and high hardness of the 15-19mm borosilicate glass, the glass plate is difficult to crack in the traditional jacking and bending, the cracking point is prone to randomness, which leads to the deviation of the micro-crack propagation path, and then the fracture is not straight or the edge is collapsed. SUMMARY

[0004] The present application relates to the technical field of float glass, in particular to a production process and production equipment of 15-19mm borosilicate glass super-thick plate.

[0005] The purpose of the present application can be achieved by the following technical solutions: A production process of 15-19mm borosilicate glass super-thick plate, comprising the following steps: Step one, raw material preparation: the raw materials stored in the raw material workshop are weighed and sent into the mixing equipment for mixing to obtain mixed materials; Step two, melting: the mixed materials are quantitatively added into the melting furnace according to the requirements, and after high-temperature melting, clarification, homogenization and cooling, qualified glass liquid is formed and flows into the flow channel; Step three, forming and annealing: the glass liquid flows from the flow channel into the tin bath, the glass liquid is naturally flattened and expanded on the surface of the tin liquid, and is controlled by the mechanical drawing, edge blocking and edge pulling machine to form a glass ribbon with a set width and thickness, and is gradually cooled, and then passes through the transition roller table into the annealing furnace for annealing and cooling, and is cooled to a set temperature and then leaves the annealing furnace and enters the cold end machine set; The edge pulling machine is symmetrically provided with multiple groups at both ends of the tin bath, and the first pair of edge pulling machines close to the first end of the tin bath are 7-9m away from the first end of the tin bath; Step four, cold end processing: after the glass ribbon enters the cold end unit, it successively passes through the full-automatic defect monitoring, speed measurement, longitudinal cutting, transverse cutting, pre-cracking, transverse breaking, separation, edge breaking, and longitudinal separation to form a raw sheet; The pre-cracking process is that after the glass ribbon is transversely cut, a laser is scanned along the transverse cutting line to generate micro-cracks and guide the transverse breaking direction. The transverse breaking process adopts synchronous lifting of multiple sets of lifting mechanisms, and the lifting mechanism located in the middle induces the initial crack.

[0006] As a further scheme of the present application, the micro-crack depth is 0.1-0.3mm.

[0007] As a further scheme of the present application, the lifting mechanism is provided with three sets, and the three sets of lifting mechanisms are arranged in a straight line perpendicular to the glass ribbon conveying direction.

[0008] As a further scheme of the present application, it comprises a conveying line, and the top of the input end of the conveying line is provided with a positioning mechanism and a pre-cracking mechanism in sequence along the conveying direction. The conveying line is provided with a transverse breaking mechanism, which is located at the rear end of the pre-cracking mechanism and performs transverse breaking operation on the glass ribbon processed by the pre-cracking mechanism.

[0009] As a further scheme of the present application, the conveying line comprises conveying supports symmetrically arranged at both ends, and multiple sets of conveying rollers are rotatably arranged between the conveying supports at both ends. The multiple sets of conveying rollers convey the glass ribbon along the conveying direction.

[0010] As a further scheme of the present application, the positioning mechanism comprises a mounting support arranged at the input end of the conveying line, and a line array camera is arranged on one side of the mounting support.

[0011] As a further scheme of the present application, the pre-cracking mechanism comprises fixed supports on both sides, and mounting substrates are cooperatively mounted on the fixed supports on both sides, a linear module is mounted on the bottom of the mounting substrate, and a laser is mounted on the moving seat of the linear module. The laser is used for pre-cracking.

[0012] As a further scheme of the present application, the transverse breaking mechanism comprises a mounting base, a limiting plate is arranged on the mounting base, and multiple sets of lifting mechanisms arranged in a straight line are slidably arranged on the limiting plate. A limiting mechanism is arranged above the conveying line.

[0013] As a further scheme of the present application, the lifting mechanism comprises a moving base slidably arranged on the limiting plate, a jacking air cylinder is connected to the bottom of the moving base, and the other end of the jacking air cylinder is connected to the mounting base. A lifting roller is fixed on the moving base. The jacking roller in the middle is provided with a flexible boss.

[0014] As a further scheme of the present application: the limiting mechanism comprises a connecting frame installed on the top of the two-side conveying support, and a limiting pressure roller is arranged in rotation at a position corresponding to each group of jacking mechanism.

[0015] The present application has the following beneficial effects: By adding a pre-cracking process, after the glass ribbon is transversely cut, a 0.1-0.3mm micro crack is generated by a laser along the tangent line, the transverse breaking direction is guided, the cracking difficulty is reduced, the randomness of the cracking point is eliminated, and further, in the transverse breaking process, a plurality of jacking mechanisms are synchronously jacked, the initial crack is induced by the jacking mechanism in the middle, the pre-crack line generated by the pre-cracking process is accurately matched, and stress dispersion is avoided.

[0016] In the present application, a transverse cutting line is generated on the glass ribbon after transverse cutting, the glass ribbon with the transverse cutting line is introduced from the input end of the conveying line, the glass edge is captured by the positioning mechanism, the transverse cutting line is matched, and the position is output to the pre-cracking mechanism, the pre-cracking mechanism is started according to the position to scan along the transverse cutting line to generate a pre-crack line, the jacking roller in the middle preferentially contacts the bottom surface of the glass ribbon through the flexible boss, the jacking roller cooperates with the limiting pressure roller to induce an initial crack along the pre-crack line, then all the jacking roller shafts contact the bottom surface of the glass ribbon, starting from the initial crack, guided along the pre-crack line, and the transverse breaking is completed. After the glass ribbon is broken, the jacking mechanism is reset, the conveying line continues to convey, and the next breaking process is performed. BRIEF DESCRIPTION OF DRAWINGS

[0017] The present application will be further described below with reference to the drawings.

[0018] Figure 1 is a production process flowchart of the present application; Figure 2 is a deflection direction schematic diagram of the edge pulling machine of the present application; Figure 3 is a production equipment schematic diagram of the present application Figure 1 ; Figure 4 is a production equipment schematic diagram of the present application Figure 2 ; Figure 5 is a conveying line structure schematic diagram of the present application Figure 1 ; Figure 6 is a conveying line structure schematic diagram of the present application Figure 2 ; Figure 7 is a transverse breaking mechanism structure schematic diagram of the present application; Figure 8 is a limiting mechanism structure schematic diagram of the present application; Figure 9 This is a schematic diagram showing the position of the lifting mechanism and the glass strip of the present invention; Figure 10 This is a schematic diagram of the lifting position of the present invention.

[0019] In the diagram: 100, conveyor line; 101, conveyor support; 102, conveyor roller; 103, synchronous belt; 104, tensioning wheel; 105, drive motor; 106, first transmission platform; 107, second transmission platform; 108, synchronous wheel; 109, protective shell; 200, positioning mechanism; 201, mounting bracket; 202, line array camera; 300, pre-splitting mechanism; 301, fixed bracket; 302, mounting base; 303, linear module; 304, laser; 400, horizontal bending mechanism; 401, mounting base; 402, limiting plate; 403, moving base; 404, ejection cylinder; 405, lifting roller; 406, flexible boss; 407, connecting frame; 408, limiting pressure roller; 409, telescopic rod; 500, glass belt; 501, pre-splitting line. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1

[0022] like Figure 1 As shown, this embodiment provides a production process for 15-19mm borosilicate glass ultra-thick plates. By adding a pre-cracking process, after the glass strip is transversely cut, a laser 304 scans along the tangent to generate microcracks of 0.1-0.3mm, guiding the transverse breaking direction, reducing the difficulty of crack initiation, and eliminating the randomness of the crack initiation point. Furthermore, in the transverse breaking process, multiple sets of lifting mechanisms are used to lift synchronously. The lifting mechanism in the middle induces the initial crack, accurately matching the pre-crack line 501 generated in the pre-cracking process, thus avoiding stress dispersion.

[0023] This embodiment describes a production process for 15-19mm thick borosilicate glass plates, including the following steps: Step 1: Raw material preparation: Weigh the raw materials stored in the raw material workshop and feed them into the mixing equipment for mixing to obtain a mixture. The main raw materials for the production of ultra-thick borosilicate glass include various inorganic minerals such as quartz sand, borax, boric acid, and soda ash; ensuring high purity and low impurities in the raw materials to meet strict quality standards.

[0024] According to the expected chemical composition and performance of the borosilicate glass super-thick plate, the precise amount of each raw material is calculated, and the precise proportioning of different raw materials is determined through complex stoichiometric relationships; The proportionally weighed raw materials are mixed well by using efficient mixing equipment such as a powerful V-shaped mixer or a double-cone mixer. The mixing process needs to ensure high uniformity to prevent stratification or segregation of the raw materials, and to provide a stable mixture for subsequent melting. The prepared mixture is transferred to the kiln head bin by a belt conveyor for standby use.

[0025] Step two, melting: the mixture is quantitatively added to the melting furnace according to the requirements, and after high-temperature melting, clarification, homogenization, and cooling, qualified glass liquid is formed and flows into the flow liquid channel; The melting furnace can use an all-electric melting furnace. The all-electric melting furnace generates heat by passing an electric current through the electrode to melt the raw materials. The melting furnace is a rotary material top automatic feeding, and the feeding realizes automatic liquid level control. The melting uses a molybdenum motor, combined with side insertion and bottom insertion. The side insertion is divided into three layers. The electrode uses silicon-controlled power regulation, and the current control is fixed. The liquid level in the melting furnace, flame reversal, kiln pressure, and kiln temperature are automatically controlled. The specific all-electric melting furnace is prior art, and the specific structure and working process are not described here.

[0026] After high-temperature melting, clarification, homogenization, and cooling, the mixture forms qualified glass liquid and flows into the flow liquid channel at a temperature of about 1200°C, and the glass liquid quantity is controlled by the flow liquid channel regulating gate.

[0027] Step three, forming and annealing: the glass liquid enters the tin bath from the flow liquid channel, spreads naturally on the surface of the tin liquid, and forms a glass ribbon with a set width and thickness through mechanical drawing, edge blocking, and edge drawing machine control, and gradually cools down, enters the annealing furnace for annealing and cooling, and cools down to a set temperature before leaving the annealing furnace and entering the cold end machine set. The set cooling temperature is below 70 degrees, and the glass ribbon leaves the annealing furnace below 70 degrees.

[0028] The edge drawing machine is symmetrically arranged on both ends of the tin bath, and the first pair of edge drawing machines near the first end of the tin bath are 7-9m away from the first end of the tin bath. As shown in Figure 2 The specific parameters of the multiple sets of edge drawing machines can be set as follows:

[0029] The glass liquid on the surface of the tin liquid is controlled in thickness and width by setting the parameters of the edge drawing machine, cooperating with the main drive, tin bath electric heating, and cooling water package. The linear speed of the edge drawing machine arranged from the source of the glass liquid feeding groove to the outlet direction of the glass plate decreases in turn, and the glass ribbon is drawn and formed.

[0030] The annealing furnace is an electrically controlled heating type, with automatic temperature control in each zone to eliminate the internal stress of the product. The annealing furnace is divided into three zones in the horizontal direction and A, B, C and F open zones in the longitudinal direction. The A zone is in the flow direction, the B zone is in the reverse flow direction, and the C zone is in the reverse flow direction. The electric butterfly valve adopts the lowest air leakage amount for selection. The temperature measuring points of the sealing zone of the annealing furnace are set at the second last section of each zone. The infrared temperature measuring instrument is not used in the sealing zone, and three infrared temperature measuring instruments are set in each zone of the open zone. Adjustable curtains are set at the upper part of each zone of the annealing furnace, and barriers are set at the lower part.

[0031] Step four, cold end processing: after the glass ribbon enters the cold end unit, it successively passes through full-automatic defect monitoring, speed measurement, longitudinal cutting, transverse cutting, pre-cracking, transverse breaking, separation, edge breaking, and longitudinal division to form a raw sheet; The full-automatic defect monitoring process introduces a full-automatic online defect detector, which changes the uncertainty caused by manual judgment, can detect each piece of product, mark the quality and product defects, automatically save data, and integrate into the factory industrial internet system to realize intelligent process of accurate defect positioning, rapid cause analysis, and timely process adjustment. At the same time, through the matching online optimization cutting system, the optimization cutting of the product with small defects is realized to improve the yield; The pre-cracking process is to generate a 0.1-0.3mm micro crack along the transverse cutting line by a laser 304 after transverse cutting of the glass ribbon, to guide the transverse breaking direction. The laser 304 is a pulse CO2 laser, such as a Dazhu GLC-CO2-3000P (peak power ≥ 3kW, pulse width 10-50μs, with long focal depth optical system). In order to realize the accurate starting of laser pre-cracking, a line array camera (Basler raL2048-48gm, 2048 pixels / row) is installed between the cutting station and the pre-cracking station to capture the glass edge in real time, match the transverse cutting line generated by the cutting station (the transverse cutting line is preset as a pre-cracking line mark), and if the matching is successful, a control signal is output to the PLC controller for adjustment and control.

[0032] It is further noted that the distance from the cutting point is greater than or equal to 1.2m, avoiding the cutting dust diffusion zone, and the camera lens is coated with a 630nm antireflection film to reduce reflectivity.

[0033] The transverse breaking process adopts a multi-section lifting mechanism to synchronously lift, and the middle lifting mechanism forms a local high stress area to induce an initial crack. The pre-cracking line 501 (0.1-0.3mm micro crack) generated by the pre-cracking process is accurately matched to avoid stress dispersion.

[0034] Example 2

[0035] The embodiment provides a production device of 15-19mm borosilicate glass super-thick plate, which is applied to the cold end processing procedure of the production device in the embodiment 1, realizes optimization of the procedure, and improves product quality.

[0036] As shown in Figure 3 and Figure 4 The production device comprises a conveying line 100 embedded in a production line of the 15-19mm borosilicate glass super-thick plate, a positioning mechanism 200 and a pre-cracking mechanism 300 are sequentially arranged on the top of the input end of the conveying line 100 along the conveying direction, and a transverse breaking mechanism 400 is arranged on the conveying line 100 and located at the rear end of the pre-cracking mechanism 300, so that the glass ribbon 500 processed by the pre-cracking mechanism 300 is subjected to the transverse breaking operation.

[0037] After the transverse cutting, the glass ribbon 500 generates a transverse cutting line, the glass ribbon 500 with the transverse cutting line is guided from the input end of the conveying line 100, the glass edge is captured by the positioning mechanism 200, the transverse cutting line is matched, and the output position is given to the pre-cracking mechanism 300, the pre-cracking mechanism 300 is started according to the position and scans along the transverse cutting line to generate a pre-cracking line 501, and then the glass ribbon 500 is broken by the transverse breaking mechanism 400, and the broken glass part continues to be conveyed for other process.

[0038] Specifically as shown in Figures 2-4 The conveying line 100 in the embodiment comprises conveying supports 101 at two ends, a plurality of conveying rollers 102 are rotationally arranged between the conveying supports 101 at the two ends, the plurality of conveying rollers 102 can be sequentially divided into a plurality of conveying systems along the conveying direction according to conveying distances, each conveying system can be driven by a group of driving sources when moving alone, or the plurality of conveying systems can be cooperated with each other to realize synchronous conveying, so that the speed difference of the conveying does not affect the pre-cracking operation, and when the plurality of conveying systems are cooperated with each other, the plurality of conveying systems are moved by a group of driving sources.

[0039] In the embodiment, the plurality of conveying rollers 102 are divided into two conveying systems along the conveying direction.

[0040] The plurality of conveying rollers 102 in the two conveying systems are connected with synchronous wheels 108 penetrating through the conveying support 101 at one side, the plurality of synchronous wheels 108 in each conveying system are synchronously driven by a synchronous belt 103, one end of the conveying roller 102 located in the middle is connected with two synchronous wheels 108, the synchronous belts 103 of the conveying systems at the two sides are connected with the corresponding synchronous wheels 108, and a plurality of tensioning wheels 104 are further arranged on the conveying support 101 at the same side, the synchronous belt 103 is limited and tensioned by the tensioning wheels 104, so that the stability of the transmission is ensured. And the first transmission platform 106 and the second transmission platform 107 are connected between the two conveying systems through the connecting column, two synchronous wheels 108 are arranged on the first transmission platform 106, and one of the two synchronous wheels 108 is arranged on the conveying roller 102 which is connected by the two conveying systems in common, one synchronous wheel 108 is arranged on the second transmission platform 107, and a driving motor 105 is fixedly installed on the outer side of the second transmission platform 107, the output shaft of the driving motor 105 is connected with the corresponding synchronous wheel 108, the three synchronous wheels 108 arranged on the first transmission platform 106 and the second transmission platform 107 are driven and connected through a synchronous belt 103, power is provided through the driving motor 105, and the conveying roller 102 in the conveying system on both sides is driven to move synchronously, so that the conveying of the glass ribbon in the front-end process is realized.

[0041] It needs to be further explained that the conveying line 100 transmission side of the embodiment is provided with a protective shell 109 for protection.

[0042] Further, as shown in the drawings, Figure 6 The positioning mechanism 200 in the embodiment includes a mounting bracket 201 arranged at the input end of the conveying line 100, a line array camera 202 is arranged on one side of the mounting bracket 201, the line array camera 202 corresponds to the cut line end of one side of the glass ribbon, and the line array camera 202 can adopt Basler raL2048-48gm, 2048 pixels / line, and can capture the glass edge in real time, match the transverse cutting line generated by the cutting station, and output a signal to the PLC for adjustment control after successful matching. The PLC controller is located in the electrical control box of the production line, and will not be described here.

[0043] Further, as shown in the drawings, Figures 4-6 The pre-cracking mechanism 300 in the embodiment includes fixed brackets 301 arranged on both sides of the conveying line 100, the fixed brackets 301 on both sides are cooperatively installed with mounting substrates 302, linear modules 303 are installed at the bottom of the mounting substrates 302, and lasers 304 are installed on the moving seats of the linear modules 303. By scanning along the transverse cutting line on the glass ribbon, a micro crack of 0.1-0.3mm is generated to guide the transverse breaking direction. The laser 304 can adopt a pulse CO2 laser.

[0044] When the PLC controller receives the signal transmitted by the line array camera 202 in the positioning mechanism 200, the linear module 303 is started after a delay setting time, and drives the laser 304 to scan along the transverse cutting line on the glass ribbon to generate a micro crack of 0.1-0.3mm.

[0045] It should be noted that the setting time is obtained by manual conversion according to the conveying speed of the glass ribbon 500 and the distance between the linear array camera 202 and the laser 304 (partially compensated according to experience), and the control logic and signal transmission of the PLC controller are prior art, which will not be described here.

[0046] Further, as shown in the figure, the transverse bending mechanism 400 of the embodiment includes a mounting base 401 arranged at the rear end of the pre-cracking mechanism 300, a limiting plate 402 arranged on the mounting base 401, a plurality of groups of jacking mechanisms arranged in a straight line on the limiting plate 402, and a limiting mechanism arranged above the jacking position of the glass ribbon 500. By using a plurality of jacking mechanisms to synchronously jack in the transverse bending process, the initial crack is induced by the jacking mechanism in the middle cooperating with the limiting mechanism. Figures 7-10

[0047] The jacking mechanism includes a moving base 403 slidingly arranged on the limiting plate 402, a jacking cylinder 404 connected to the bottom of the moving base 403, and the other end of the jacking cylinder 404 connected to the mounting base 401, and a jacking roller 405 fixed on the moving base 403. Further, the embodiment takes three groups of jacking mechanisms as an example, an installation slot is opened at the top of the middle jacking roller 405, and a flexible boss 406 is fixed in the installation slot. The flexible boss 406 is made of rubber material with elasticity and can be completely squeezed into the installation slot under force.

[0048] Further, the limiting mechanism includes a connecting frame 407 installed on the top of the two side conveying supports 101, the connecting frame 407 is an integral structure, and a limiting pressure roller 408 is rotatably arranged on the connecting frame 407 corresponding to each group of jacking mechanisms. The limiting pressure roller 408 cooperates with the corresponding jacking roller 405 to realize the action of transverse bending of the glass ribbon, wherein the limiting pressure roller 408 can be made of rubber material and has a small amount of elasticity during the jacking process, which can avoid the increase of the pressure stress of the glass ribbon 500 caused by rigid limiting and damage to the glass.

[0049] Further, the above connecting frame 407 can also be combined by a horizontal frame and a vertical frame, and the vertical frames on both sides are fixed on the corresponding conveying supports 101 (as shown in the figure). Figure 6 The inside of the vertical frame is provided with a telescopic rod 409, the head of the telescopic rod 409 is connected to the both ends of the horizontal frame, and the position of the limiting pressure roller 408 can be adjusted by driving the telescopic rod 409 to realize the flexibility of transverse bending limiting.

[0050] The PLC controller is connected with the laser 304, the linear array camera 202, and the prime number ​

[0051] After the laser 304 completes the pre-cracking operation on the glass ribbon 500, when the pre-cracking line 501 moves to the directly above the lifting mechanism, the PLC controller starts the ejecting cylinder 404, the ejecting cylinder 404 pushes the lifting roller 405 up, the middle lifting roller 405 preferentially contacts the bottom surface of the glass ribbon 500 through the flexible boss 406, and the glass ribbon 500 is pushed to cooperate with the limiting pressure roller 408 to induce an initial crack along the pre-cracking line 501, and then all the shaft surfaces of the lifting rollers 405 are in contact with the bottom surface of the glass ribbon 500. Starting from the initial crack, along the guide of the pre-cracking line 501, the transverse breaking is completed. After the glass ribbon 500 is broken, the lifting mechanism is reset, the conveying line 100 continues to convey, and the next breaking process is performed.

[0052] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, and a particular orientation configuration and operation, therefore, cannot be understood as a limitation on the present application. In addition, "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0053] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0054] The above describes one embodiment of the present application in detail, but the content described is only the preferred embodiment of the present application, and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made within the scope of the present application shall still belong to the patent scope of the present application.

Claims

1. A process for the production of 15-19 mm borosilicate glass super-thin slabs, characterized by, Includes the following steps: Step 1: Raw material preparation: Weigh the raw materials stored in the raw material workshop and feed them into the mixing equipment for mixing to obtain a mixture. Step 2, Melting: The mixture is added to the melting furnace in a measured amount according to requirements. After high-temperature melting, clarification, homogenization, and cooling, it forms qualified glass liquid and flows into the liquid flow channel. Step 3, forming and annealing: The molten glass enters the tin bath from the flow channel. The molten glass spreads and expands naturally on the surface of the molten tin. It is then guided by mechanical pulling, edge blocking and edge pulling machine to form a glass strip (500) with a set width and thickness. It is then gradually cooled and enters the annealing furnace through the transition roller table for annealing and cooling. After cooling to the set temperature, it leaves the annealing furnace and enters the cold end unit. Multiple sets of edge-pulling machines are symmetrically arranged at both ends of the tin bath, with the first pair of edge-pulling machines on the side closest to the beginning of the tin bath being 7-9m away from the beginning of the tin bath. Step 4, Cold end processing: After the glass ribbon (500) enters the cold end unit, it goes through fully automatic defect monitoring, speed measurement, longitudinal cutting, transverse cutting, pre-cracking, transverse bending, separation, edge bending, and longitudinal splitting in sequence to form the original sheet; The pre-cracking process involves scanning along the transverse cutting line with a laser after the glass strip (500) is transversely cut to generate microcracks and guide the transverse breakage direction. The horizontal bending process employs multiple sets of lifting mechanisms for synchronous lifting, with the lifting mechanism in the middle inducing the initial cracks.

2. The production process of a 15-19 mm borosilicate glass super-thick plate according to claim 1, characterized in that, The depth of the microcracks is 0.1-0.3 mm.

3. The production process of a 15-19 mm borosilicate glass super-thick plate according to claim 1, characterized in that, The lifting mechanism is provided in three sets, and the three sets of lifting mechanisms are arranged in a straight line perpendicular to the glass belt (500) conveying direction.

4. An apparatus for producing 15-19 mm borosilicate glass super-thin slabs, characterized in that, It includes a conveyor line (100), and a positioning mechanism (200) and a pre-splitting mechanism (300) are sequentially arranged at the top of the input end of the conveyor line (100) along the conveying direction. The conveyor line (100) is provided with a horizontal bending mechanism (400), which is located at the rear end of the pre-crack mechanism (300) and performs a horizontal bending operation on the glass strip (500) after it has been processed by the pre-crack mechanism (300).

5. The apparatus for producing a 15-19 mm borosilicate glass super-thick sheet according to claim 4, characterized in that, The conveyor line (100) includes conveyor supports (101) symmetrically arranged at both ends, and multiple sets of conveyor rollers (102) are rotatably arranged between the two conveyor supports (101). Multiple sets of the conveying rollers (102) convey the glass strip (500) along the conveying direction.

6. The apparatus for producing a 15-19 mm borosilicate glass super-thick sheet according to claim 4, wherein The positioning mechanism (200) includes a mounting bracket (201) disposed at the input end of the conveyor line (100), and a line scan camera (202) is disposed on one side of the mounting bracket (201).

7. The apparatus for producing a 15-19 mm borosilicate glass super-thick sheet according to claim 4, wherein The pre-splitting mechanism (300) includes fixed brackets (301) on both sides, and mounting base plates (302) are installed on the fixed brackets (301) on both sides. A linear module (303) is installed at the bottom of the mounting base plate (302), and a laser (304) is installed on the movable seat of the linear module (303). Pre-cracking is performed using the laser (304).

8. The production equipment for 15-19mm borosilicate glass ultra-thick plates according to claim 4, characterized in that, The horizontal bending mechanism (400) includes a mounting base (401), a limiting plate (402) is provided on the mounting base (401), and multiple sets of lifting mechanisms arranged in a straight line are slidably provided on the limiting plate (402). A limit mechanism is provided above the conveyor line (100).

9. The production equipment for 15-19mm borosilicate glass ultra-thick plates according to claim 8, characterized in that, The lifting mechanism includes a movable base (403) slidably disposed on a limiting plate (402), and a push-out cylinder (404) is connected to the bottom of the movable base (403). The other end of the push-out cylinder (404) is connected to the mounting base (401). A lifting roller (405) is fixed on the movable base (403). A flexible boss (406) is provided on the lifting roller (405) in the middle.

10. The production equipment for 15-19mm borosilicate glass ultra-thick plates according to claim 8, characterized in that, The limiting mechanism includes a connecting frame (407) installed on the top of the two side conveying brackets (101), and the connecting frame (407) is provided with a limiting pressure wheel (408) corresponding to the position of each lifting mechanism.

Images