CN115710084A - Glass plate directional stretching device and stretching method - Google Patents
Glass plate directional stretching device and stretching method Download PDFInfo
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- CN115710084A CN115710084A CN202211372417.1A CN202211372417A CN115710084A CN 115710084 A CN115710084 A CN 115710084A CN 202211372417 A CN202211372417 A CN 202211372417A CN 115710084 A CN115710084 A CN 115710084A
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- 239000011521 glass Substances 0.000 title claims abstract description 226
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Abstract
The invention discloses a glass plate directional drawing device and a drawing method, belonging to the technical field of glass processing and manufacturing, and comprising a clamping mechanism, a heating mechanism and a traction drawing mechanism which are sequentially arranged along the vertical direction, wherein the clamping mechanism is used for clamping a glass plate to be processed and vertically sending the glass plate to be processed into the heating mechanism; the heating mechanism comprises a heating cavity with an upper opening and a lower opening, and a preheating temperature area, a melting temperature area and a heat preservation temperature area are vertically and sequentially arranged in the heating cavity; the traction and stretching mechanism is arranged in the heat insulation temperature area and is used for traction and stretching the glass plate to be processed; and a controller is also arranged between the clamping mechanism and the traction and stretching mechanism and used for sensing the moving speed of the clamping mechanism and controlling the traction and stretching mechanism to draw the glass plate to be processed so as to ensure that the glass plate to be processed is stretched at a constant speed. The directional drawing device can realize the constant drawing of the glass plate in a molten and softened state and the stable forming after drawing, and can obtain the ultrathin glass plate with constant length-diameter ratio of metal particles.
Description
Technical Field
The invention belongs to the technical field of glass processing and manufacturing, and particularly relates to a glass plate directional stretching device and a glass plate directional stretching method.
Background
The ultrathin glass plate is special optical glass which directionally distributes special needle-shaped metal particles in glass and has optical polarization performance by utilizing the plasma resonance effect in the special optical glass. The special optical glass has wide working waveband, large incident angle, high optical damage threshold, high mechanical strength and excellent high temperature resistance, and has extremely important application in the field of optical communication.
Aiming at the key technical link of batch preparation of the ultrathin special glass, the stretching process is adopted, and the softening and stretching of the glass are to ensure that the glass is uniformly stretched, so that the core key point with uniform thickness and stable length-diameter ratio of metal particles is obtained. The softening of the glass relates to relevant melting heating equipment, and in the current stage of the heating equipment, the temperature gradient inside the equipment is large, the integral uniformity of a temperature field is very poor, and the softening degrees of the glass at different positions cause that the glass cannot be continuously and constantly stretched, and the target glass with uniform size and thickness and stable length-diameter ratio of metal particles cannot be obtained.
Disclosure of Invention
In view of one or more of the above drawbacks or needs for improvement in the prior art, the present invention provides a glass sheet directional drawing apparatus and a glass sheet directional drawing method, which are used to solve the problem that the existing drawing equipment cannot obtain glass with uniform size and thickness and stable length-diameter ratio of metal particles.
In order to achieve the purpose, the invention provides a glass plate directional drawing method which is realized by a glass plate directional drawing device, wherein the glass plate directional drawing device comprises a clamping mechanism, a heating mechanism and a traction drawing mechanism which are vertically and sequentially arranged, and the heating mechanism comprises a preheating temperature area, a melting temperature area and a heat preservation temperature area which are vertically and sequentially arranged; which comprises the following steps:
s1: the preheating mechanism enables a preheating temperature zone to be at a first temperature;
s2: the clamping mechanism clamps the glass plate to be processed and drives the glass plate to be processed to extend into the preheating temperature zone, and the clamping mechanism drives the glass plate to be processed to continuously descend until the glass plate to be processed enters the melting temperature zone from one end of the clamping mechanism;
s3: the heating mechanism carries out secondary heating, so that a melting temperature zone is at a second temperature, the melting temperature zone continuously heats the glass plate to be processed, and the second temperature is not less than the glass transition temperature of the glass plate to be processed;
s4: and melting and dropping the end of the glass plate to be processed, which is away from the clamping mechanism, and contacting with the traction and stretching mechanism, and drawing the glass plate to be processed by the traction and stretching mechanism to continuously stretch to obtain the target glass plate.
As a further improvement of the invention, the traction and stretching mechanism comprises a driving motor and a speed reducer;
and in the step S4, the drawing force F of the drawing and drawing mechanism on the glass plate to be processed is obtained by calculation according to the torque T of the driving motor, the reduction ratio i of the speed reducer, the rotating speed N of the driving motor and the drawing speed V2 of the drawing and drawing mechanism on the glass plate to be processed.
As a further improvement of the invention, the drawing speed V2 of the glass plate to be processed by the drawing and drawing mechanism is obtained by calculation according to the descending speed V1 of the glass plate to be processed clamped by the clamping mechanism, the width W1 of the glass plate to be processed, the thickness t1 of the glass plate to be processed, the width W2 of the target glass plate and the thickness t2 of the target glass plate.
As a further improvement of the invention, the calculation mode of the drawing speed V2 of the glass plate to be processed by the drawing and drawing mechanism is as follows:
v2= V1 × W1 × t 1/(W2 × t 2) (formula 1)
As a further improvement of the invention, the calculation mode of the drawing force F of the glass plate to be processed by the drawing mechanism is as follows:
f = W2 × T2 × pi × N × T × i/(30t 1 × W1 × v 1) (formula 2)
As a further improvement of the invention, the traction and stretching mechanism is positioned in the heat-preservation temperature zone, and the temperature of the heat-preservation temperature zone is A-B.
The application also includes a glass sheet directional drawing device, which includes:
the clamping mechanism, the heating mechanism and the traction stretching mechanism are sequentially arranged along the vertical direction;
the clamping mechanism is used for clamping the glass plate and vertically sending the glass plate to be processed into the heating mechanism;
the heating mechanism comprises a heating cavity with an upper opening and a lower opening, and the openings are used for leading in and leading out the glass plate to be processed;
the heating cavity comprises a preheating temperature zone, a melting temperature zone and a heat preservation temperature zone which are vertically and sequentially arranged;
the traction and stretching mechanism is arranged in the heat insulation temperature zone and is used for traction and stretching of the glass plate to be processed;
and a controller is arranged between the clamping mechanism and the traction and stretching mechanism, is electrically connected with the clamping mechanism and the traction and stretching mechanism respectively and is used for sensing the moving speed of the clamping mechanism and controlling the traction speed of the traction and stretching mechanism for drawing the glass plate to be processed and stretching the glass plate to be processed at a constant speed.
As a further improvement of the invention, at least one heating unit is arranged in each of the preheating temperature zone, the melting temperature zone and the heat preservation temperature zone, and the heating temperature of each heating unit is independently adjustable.
As a further improvement of the invention, a plurality of thermal induction mechanisms are arranged on the circumferential side wall of the heating mechanism, and each thermal induction mechanism is distributed at the preheating temperature zone, the melting temperature zone and the heat preservation temperature zone.
As a further improvement of the invention, the vertical length of the preheating temperature area is greater than that of the melting temperature area.
The above-described improved technical features may be combined with each other as long as they do not conflict with each other.
In general, compared with the prior art, the technical scheme conceived by the invention has the following beneficial effects:
(1) The glass plate directional drawing method comprises the steps of setting a heating mechanism into a preheating temperature area, a melting temperature area and a heat preservation temperature area in a segmented mode, placing a glass plate to be processed into the preheating temperature area through a clamping mechanism for heating, enabling the glass plate to be processed to be in a first temperature range for heating, enabling the glass plate to be processed to be rapidly melted and softened when entering the melting temperature area, drawing the glass plate in the softened state through the clamping mechanism, enabling the glass plate to be processed to be in a uniform drawing state, enabling the obtained target glass plate to have good uniformity, enabling metal particles in the glass plate to be processed to belong to a stable drawing state through uniform drawing of the glass plate to be processed, and further obtaining the ultra-thin glass plate with the constant metal particle length-diameter ratio.
(2) According to the directional drawing method for the glass plate, the glass plate to be processed is preliminarily preheated in the preheating temperature zone, so that on one hand, the glass plate to be processed can be conveniently and rapidly melted and softened after entering the melting temperature zone, the drawing and drawing of the drawing and drawing mechanism are facilitated, and on the other hand, most of the glass plate to be processed can be prevented from being in a melting and softening state, so that the glass plate to be processed is too easy to draw, and metal particles cannot be effectively drawn.
(3) According to the directional drawing method of the glass plate, the preheating temperature zone, the melting temperature zone and the heat preservation temperature zone are arranged, so that the glass plate to be processed is ensured to have temperature buffer areas before and after the melting drawing, and the phenomenon that the glass plate to be processed is warped due to large thermal stress generated inside the glass plate to be processed due to overlarge vertical temperature change gradient of the glass plate to be processed is avoided.
(4) The glass plate directional drawing method of the invention strictly calculates and controls the descending speed of the glass plate to be processed and the drawing force of the drawing and drawing mechanism on the glass plate to be processed, so that when the glass plate to be processed is in a stable heating and melting interval, the drawing and drawing mechanism can stably draw the glass plate to be processed at a constant speed, and further a target glass plate with uniform shape and size is obtained, and metal particles in the glass plate to be processed are in a constant and uniform drawing state, so that an ultrathin glass plate with stable metal particle length-diameter ratio drawing is obtained.
(5) The glass plate directional drawing device strictly senses the moving speed of the clamping mechanism and the drawing speed of the drawing and drawing mechanism through the controller, ensures the constant drawing of a glass plate to be processed in a molten and softened state, senses the temperature of each section of a preheating temperature area, a melting temperature area and a heat preservation temperature area in the heating mechanism in real time through the heat sensing mechanism, ensures the constant softening and drawing of the glass plate to be processed and the forming after drawing, and ensures the stable forming of the target glass plate.
Drawings
FIG. 1 is a schematic view showing the overall structure of an apparatus for directional drawing of a glass sheet according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a preheating temperature zone in an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a melting temperature zone in an embodiment of the present invention;
FIG. 4 is a schematic diagram of one of the heating units according to the embodiment of the present invention;
fig. 5 is a schematic structural diagram of one of the heating units in the embodiment of the present invention.
In all the figures, the same reference numerals denote the same features, in particular:
1. a clamping mechanism; 2. a glass plate to be processed; 3. a preheating temperature zone; 4. a melting temperature zone; 5. a traction and stretching mechanism; 6. a heat preservation temperature zone; 7. a support; 8. a heating unit; 9. heating wires; 10. ceramic fibers.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the respective embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the preparation process of the conventional special ultrathin glass, the uniform melting and stable stretching of the prefabricated special glass plate are important links in the production process, which determine important performance parameters such as extinction ratio, particle length-diameter ratio and the like of the special ultrathin glass, and the furnace body of the traditional open single-temperature-zone heating furnace can not meet the heating and stable stretching requirements of the prefabricated special glass plate, and is embodied from the following aspects:
1. the open type single-temperature-zone heating furnace has the problems that the temperature gradient in the furnace is very large and the uniformity of a temperature field is poor due to the large heat exchange with the environment outside the furnace, so that the prefabricated special glass plate has serious warping deformation in the thickness direction in the melting and softening process and can not be synchronously melted in the width direction, and even the molten prefabricated special glass can not extend out of an opening at the bottom of the heating furnace;
2. the larger temperature gradient in the temperature field can cause the inside of the molten prefabricated special glass plate to have larger thermal stress, and obvious cracks and even explosion cracks can occur when the special glass plate is impacted at lower temperature at the bottom of the heating furnace;
3. after the molten prefabricated special glass plate leaves the heating furnace with a single temperature area, the molten prefabricated special glass plate can be rapidly cooled and hardened due to low external environment temperature, so that the prefabricated special glass plate is directly cracked in a stretching stage, and effective directional stretching cannot be realized.
Based on this, the application provides a glass plate directional drawing device and a drawing method, and the following concrete steps:
referring to fig. 1 to 5, the method for directionally drawing ultra-thin glass sheets according to the present invention is mainly implemented by a glass sheet directional drawing apparatus.
Specifically, the glass plate directional drawing device comprises a clamping mechanism 1, a heating mechanism and a drawing and drawing mechanism 5 which are sequentially arranged along the vertical direction; the glass plate processing device comprises a clamping mechanism 1, a heating mechanism and a glass plate processing mechanism, wherein the clamping mechanism 1 is used for clamping a glass plate and vertically sending the glass plate 2 to be processed into the heating mechanism, the heating mechanism comprises a heating cavity with an upper opening and a lower opening, and the opening on the heating cavity is used for leading in and leading out the glass plate 2 to be processed; the heating cavity comprises a preheating temperature zone 3, a melting temperature zone 4 and a heat preservation temperature zone 6 which are sequentially arranged along the vertical direction, and the traction and stretching mechanism 5 is arranged in the heat preservation temperature zone 6 and is used for traction and stretching the glass plate 2 to be processed in a melting and softening state; a controller is arranged between the clamping mechanism 1 and the traction and stretching mechanism 5, and is electrically connected with the clamping mechanism 1 and the traction and stretching mechanism 5 respectively, and the controller is mainly used for sensing the moving speed of the clamping mechanism 1 and correspondingly controlling the traction speed of the traction and stretching mechanism 5 for drawing the glass plate 2 to be processed so as to stretch the glass plate 2 to be processed at a constant speed.
The glass plate directional drawing device is mainly used for driving the descending speed of a glass plate 2 to be processed through the real-time sensing clamping mechanism 1 and correspondingly controlling the drawing speed of the drawing and drawing mechanism 5 so as to enable the glass plate 2 to be processed in a molten and softened state to be subjected to constant drawing force; simultaneously treat through heating mechanism and treat glass board 2 invariable heating for treat that the glass board of processing is in invariable melting softening state, under the condition of the softening state of control treating glass board 2 and traction force, make the tensile of treating glass board 2 of processing be in dynamic balance state, ensure to treat that glass board 2 is invariable tensile, guarantee to treat that the draw ratio of metal particle is tensile steadily in glass board 2 of processing.
Preferably, the clamping device in the present application is provided with a tension sensor for sensing tension data of the glass sheet 2 to be processed in a molten and softened state, and when the tension sensor data is stable, it is proved that the glass sheet 2 to be processed is in a constant tension state, and when the tension sensor data fluctuates, it is proved that the tension of the glass sheet 2 to be processed fluctuates or the molten and softened rate of the glass to be processed is unstable. Preferably, both ends of the traction clamping mechanism 1 horizontally extend out of the heat preservation temperature area 6, and a bracket 7 is arranged below the traction clamping mechanism 1 for supporting the traction clamping mechanism. Namely, the side wall of the heating mechanism is correspondingly provided with a through hole, and the two ends of the traction clamping mechanism 1 correspondingly penetrate out of the heating mechanism from the through hole and are supported by the bracket 7. It should be noted that the through hole on the side wall of the heating mechanism needs to be sealed correspondingly to avoid heat inside the heating mechanism from escaping to the outside from the through hole.
Further, at least one heating unit 8 is arranged in the preheating temperature area 3, the melting temperature area 4 and the heat preservation temperature area 6, and the temperature among the heating units 8 is independently adjustable. Heating mechanism in this application adopts the form of dismantling to inlay to establish in the heating cavity including heating cavity, preheating warm-area 3, melting warm-area 4 and heat preservation warm-area 6, and each warm-area comprises each heating element 8 in essence, and each warm-area comprises heating element 8 through different quantity to form different temperature regions. And the temperature and the number of the heating units 8 in each temperature zone can be adjusted so as to adapt to the glass plates 2 to be processed with different heating requirements.
Further, the heating units 8 in each temperature zone are wound by adopting high-temperature-resistant heating wires 9 with certain lengths according to a certain mode, can be arranged in a circumferential winding mode or a vertical winding mode, and are embedded in the ceramic fibers 10 for forming through negative pressure forming. Moreover, the length of the heating wires 9 can be calculated according to the power required by heating, and the distance between the heating wires 9 can also be selected according to the diameter of the heating wires 9 and the parameters of the negative pressure forming process. Preferably, the upper and lower ports of the ceramic fiber 10 main body of each heating unit 8 are reserved with embedding gaps, so that the heating units 8 of each temperature zone can be conveniently assembled and embedded.
Further, set up the insulating layer respectively between preheating warm-area 3 in the above-mentioned heating mechanism, melting warm-area 4 and the heat preservation warm-area 6, set up the through-hole that supplies to treat that processing glass board 2 passes on the insulating layer equally, the insulating layer can reduce the temperature in melting warm-area 4 to a certain extent and to preheating warm-area 3 and the heat preservation warm-area 6 loss. Because the preheating temperature area 3 and the heat preservation temperature area 6 need to be provided with through holes for the glass plate 2 to be processed and the target glass plate to pass through, the heat dissipation of the upper end and the lower end of the heating mechanism is serious, and therefore a heat insulation layer needs to be arranged between each temperature area to reduce the heat dissipated by the heating mechanism to the upper end and the lower end.
The heating mechanism is provided with a preheating temperature zone 3, a melting temperature zone 4 and a heat preservation temperature zone 6, and aims to firstly perform primary heating on a glass plate 2 to be processed through the preheating temperature zone 3, the glass plate 2 to be processed does not have melting problem between glass transition temperatures, and the temperature of the preheating temperature zone 3 can be controlled to quickly rise to a melting temperature zone when the glass plate 2 to be processed is in the melting temperature zone 4, so that the drawing and stretching mechanism 5 can conveniently draw the glass plate 2 to be processed. Meanwhile, the glass plate 2 to be processed directly enters the melting temperature region 4 from the normal temperature, so that the temperature gradient change is large, large thermal stress is generated inside the glass plate 2 to be processed, and the problem of warping of the glass plate 2 to be processed is caused. Moreover, when the glass plate 2 to be processed is in the melting temperature zone 4, the glass plate 2 to be processed is melted and softened severely, the glass plate 2 to be processed is seriously fallen under gravity, the metal particles in the glass plate cannot be effectively stretched due to easy stretching, and the length-diameter ratio of the metal particles cannot be ensured, so that the preheating temperature zone 3 needs to be preset, and the glass plate 2 to be processed can be melted and softened rapidly after entering the melting temperature zone 4 on the premise of avoiding the glass plate 2 to be processed from being melted in advance.
Further, in order to avoid the problem that most of the glass plate 2 to be processed is in the melting temperature zone 4, which leads to the early softening of the glass plate, the vertical arrangement length h1 of the preheating temperature zone 3 is preferably greater than the vertical arrangement length h2 of the melting temperature zone 4, so that most of the glass to be processed is in the preheating state and can be rapidly softened after entering the melting temperature zone 4.
Meanwhile, heat exchange inside the heating mechanism is realized among the preheating temperature zone 3, the melting temperature zone 4 and the heat preservation temperature zone 6 in the heating mechanism in a mode of thermal convection and thermal radiation, so that temperature field coupling inside the whole heating mechanism is realized, the temperature in the heating mechanism is ensured to form a gradient temperature range within a certain range, metal particles in the glass plate 2 to be processed can be conveniently and uniformly melted and flowed along the gravity direction, the metal particles are ensured to extend along the stretching force direction under the action of the downward stretching force, and the purpose of stretching the length-diameter ratio of the metal particles is realized.
Furthermore, the above-mentioned thermal insulation temperature zone 6 is set to avoid the problem that the glass plate 2 to be processed coming out from the melting temperature zone 4 is rapidly cooled to cause hardening, which leads to direct cracking when the drawing and stretching mechanism 5 draws. The temperature of the heat-retaining temperature zone 6 needs to be strictly set, and has a certain temperature difference from the melting temperature. The temperature difference between the heat preservation temperature zone 6 and the melting temperature zone 4 is designed to avoid the rebound phenomenon of the metal particles at the melting temperature after the metal particles are stretched, and the rebound of the metal particles is reduced through a certain temperature difference design.
Further preferably, a plurality of thermal sensing mechanisms are arranged on the circumferential side wall of the heating cavity in the present application, and each thermal sensing mechanism is distributed at the preheating temperature zone 3, the melting temperature zone 4 and the heat preservation temperature zone 6 to monitor the temperature of each temperature zone, so as to adjust the temperature of each temperature zone at any time and make the temperature in a dynamic balance state. Specifically, the thermal induction mechanism is a thermocouple, and a plurality of through holes for inserting the heating thermocouples are formed in the circumferential side wall of the heating cavity. Preferably, the number of the inserted thermocouples can be arranged according to actual test precision, and the through holes where the thermocouples are not inserted are filled with heat insulation materials for blocking, so that heat dissipation is avoided.
Further, the glass plate directional drawing method in the present application is realized by the above glass plate directional drawing device, which comprises the steps of:
s1: the preheating mechanism enables the preheating temperature zone 3 to be at a first temperature;
s2: the clamping mechanism 1 clamps the glass plate 2 to be processed and drives the glass plate 2 to be processed to extend into the preheating temperature zone 3, and the clamping mechanism 1 drives the glass plate 2 to be processed to continuously descend until one end of the glass plate 2 to be processed, which deviates from the clamping mechanism 1, enters the melting temperature zone 4;
s3: the heating mechanism carries out secondary heating, so that the melting temperature zone 4 is at a second temperature, the melting temperature zone 4 continuously heats the glass plate 2 to be processed, and the second temperature is not less than the glass transition temperature of the glass plate 2 to be processed;
s4: and melting and dropping one end of the glass plate 2 to be processed, which is far away from the clamping mechanism 1, and contacting with the traction and stretching mechanism 5, wherein the traction and stretching mechanism 5 is used for drawing the glass plate 2 to be processed to continuously stretch, so as to obtain the target glass plate.
Specifically, the temperature of the heating mechanism in step S1 is raised by heating the heating mechanism as a whole, and the first temperature of the preheating temperature zone 3 is preferably 450 ± 10 ℃,450 ℃ is lower than the glass transition temperature of the conventional glass plate 2 to be processed, so that the glass plate 2 to be processed is not deformed, and is close to the glass transition temperature (500-800 ℃) of the glass plate 2 to be processed, and the glass plate 2 to be processed can rapidly reach the melting and softening temperature after entering the melting temperature zone 4 while the melting and softening of the glass plate 2 to be processed are avoided, where the glass transition temperature of the glass plate 2 to be processed is determined according to the characteristics of the glass plate itself.
Further, the heating mechanism performs secondary heating in the step S3 by using the heating unit 8 therein, the second temperature of the melting temperature zone 4 is not lower than the glass transition temperature of the glass plate 2 to be processed, the second temperature is adjusted according to the actual glass transition temperature of the glass plate 2 to be processed, and the second temperature is usually 5-35 ℃ higher than the glass transition temperature of the glass plate 2 to be processed, so as to avoid that the melting degree of the glass plate 2 to be processed is too high while ensuring melting and softening of the glass plate 2 to be processed, thereby affecting the stretching of the metal particles.
Further, the above-mentioned glass plate directional drawing method needs to realize the constant drawing of the glass plate 2 to be processed, which depends on the drawing force of the drawing mechanism 5 and the clamping feeding rate of the clamping mechanism 1.
Specifically, the traction stretching mechanism 5 comprises a driving motor and a speed reducer, and the stretching force F of the traction stretching mechanism 5 on the glass plate 2 to be processed is calculated according to the torque T of the driving motor, the reduction ratio i of the speed reducer, the rotating speed N of the driving motor and the stretching speed V2 of the traction stretching mechanism 5 on the glass plate 2 to be processed, and the method specifically comprises the following steps:
f = T × pi × N/(30 × v2) (formula 3)
Further, the drawing rate V2 of the glass plate 2 to be processed by the drawing and drawing mechanism 5 is calculated according to the descending rate V1 of the glass plate 2 to be processed clamped by the clamping mechanism 1, the width W1 of the glass plate 2 to be processed, the thickness t1 of the glass plate 2 to be processed, the width W2 of the target glass plate, and the thickness t2 of the target glass plate, and specifically as follows:
v2= V1 × W1 × t 1/(W2 × t 2) (formula 1)
By substituting V2 in formula 1 into formula 3, the calculation mode of the drawing and stretching mechanism 5 for the drawing force F of the glass plate 2 to be processed can be obtained, which is specifically as follows:
f = W2 × T2 × pi × N × T × i/(30t 1 × W1 × v 1) (formula 2)
In the preparation process of the target glass plate, the width W2 and the thickness T2 of the target glass plate are known, the width W1 and the thickness T1 of the glass plate 2 to be processed are known, the torque T of the driving motor, the reduction ratio i of the speed reducer, the rotating speed N of the driving motor and the descending speed V1 of the glass plate 2 to be processed clamped by the clamping mechanism 1 can be obtained through setting, and the drawing force F of the drawing and drawing mechanism 5 on the glass plate 2 to be processed can be obtained. When the drawing and stretching mechanism 5 determines the drawing force of the glass sheet 2 to be processed and the temperature of the heating mechanism is constant, stable stretching of the target glass sheet size can be ensured. Also, the target glass sheet having a thickness of 0.1 to 1mm can be obtained by the above-described drawing method.
Further, the drawing mechanism 5 is located in the temperature-keeping warm zone 6 to ensure the temperature-keeping forming of the target glass sheet, and the temperature of the temperature-keeping warm zone 6 is preferably 200 to 300 ℃ in order to avoid the rebound of the elongated metal particles in the target glass sheet.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The glass plate directional drawing method is characterized by being realized by a glass plate directional drawing device, wherein the glass plate directional drawing device comprises a clamping mechanism, a heating mechanism and a traction drawing mechanism which are vertically and sequentially arranged, and the heating mechanism comprises a preheating temperature zone, a melting temperature zone and a heat preservation temperature zone which are vertically and sequentially arranged; the method comprises the following steps:
s1: the preheating mechanism enables a preheating temperature zone to be at a first temperature;
s2: the clamping mechanism clamps the glass plate to be processed and drives the glass plate to be processed to extend into the preheating temperature zone, and the clamping mechanism drives the glass plate to be processed to continuously descend until the glass plate to be processed enters the melting temperature zone from one end of the clamping mechanism;
s3: the heating mechanism carries out secondary heating, so that a melting temperature zone is at a second temperature, the melting temperature zone continuously heats the glass plate to be processed, and the second temperature is not less than the glass transition temperature of the glass plate to be processed;
s4: and melting and dropping the end of the glass plate to be processed, which is away from the clamping mechanism, and contacting with the traction and stretching mechanism, and drawing the glass plate to be processed by the traction and stretching mechanism to continuously stretch to obtain the target glass plate.
2. The glass sheet directional drawing method according to claim 1, wherein the drawing and stretching mechanism comprises a drive motor and a speed reducer;
and in the step S4, the drawing force F of the drawing and drawing mechanism on the glass plate to be processed is obtained by calculation according to the torque T of the driving motor, the reduction ratio i of the speed reducer, the rotating speed N of the driving motor and the drawing speed V2 of the drawing and drawing mechanism on the glass plate to be processed.
3. The glass plate directional drawing method according to claim 2, wherein the drawing speed V2 of the drawing mechanism for the glass plate to be processed is calculated according to the descending speed V1 of the glass plate to be processed clamped by the clamping mechanism, the width W1 of the glass plate to be processed, the thickness t1 of the glass plate to be processed, the width W2 of the target glass plate and the thickness t2 of the target glass plate.
4. The glass sheet directional drawing method according to claim 3, wherein the drawing speed V2 of the glass sheet to be processed by the drawing mechanism is calculated by:
v2= V1 × W1 × t 1/(W2 × t 2) (formula 1)
5. The glass sheet directional drawing method according to claim 3, wherein the drawing force F of the drawing mechanism to the glass sheet to be processed is calculated in the following manner:
f = W2 × T2 × pi × N × T × i/(30t 1 × W1 × v 1) (formula 2)
6. The glass sheet directional drawing method according to claim 1, wherein the drawing mechanism is located within the temperature-maintaining zone, and the temperature of the temperature-maintaining zone is 200 ℃ to 300 ℃.
7. A glass sheet directional drawing apparatus, comprising:
the clamping mechanism, the heating mechanism and the traction stretching mechanism are sequentially arranged along the vertical direction;
the clamping mechanism is used for clamping a glass plate to be processed and vertically sending the glass plate to be processed into the heating mechanism;
the heating mechanism comprises a heating cavity with an upper opening and a lower opening, and the openings are used for leading in and leading out the glass plate to be processed;
the heating cavity comprises a preheating temperature area, a melting temperature area and a heat preservation temperature area which are vertically and sequentially arranged;
the traction and stretching mechanism is arranged in the heat insulation temperature zone and is used for traction and stretching of the glass plate to be processed;
and a controller is arranged between the clamping mechanism and the traction and stretching mechanism, is electrically connected with the clamping mechanism and the traction and stretching mechanism respectively and is used for sensing the moving speed of the clamping mechanism and controlling the traction speed of the traction and stretching mechanism for drawing the glass plate to be processed and stretching the glass plate to be processed at a constant speed.
8. An apparatus as claimed in claim 7, wherein at least one heating unit is provided in each of the preheating temperature zone, the melting temperature zone and the holding temperature zone, and the temperature of each heating unit is individually adjustable.
9. The glass sheet directional drawing device according to claim 7, wherein a plurality of heat induction mechanisms are provided on a circumferential side wall of the heating mechanism, and each of the heat induction mechanisms is distributed at the preheating temperature zone, the melting temperature zone, and the heat-insulating temperature zone.
10. The apparatus of claim 7, wherein the preheating temperature zone has a vertical length greater than a vertical length of the melting temperature zone.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211372417.1A CN115710084A (en) | 2022-11-03 | 2022-11-03 | Glass plate directional stretching device and stretching method |
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| CN202211372417.1A CN115710084A (en) | 2022-11-03 | 2022-11-03 | Glass plate directional stretching device and stretching method |
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Cited By (1)
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|---|---|---|---|---|
| CN115724579A (en) * | 2022-11-03 | 2023-03-03 | 长飞光纤光缆股份有限公司 | Polarization glass stretching equipment |
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