CN213388347U - Heating furnace conveying line in continuous glass tempering furnace - Google Patents
Heating furnace conveying line in continuous glass tempering furnace Download PDFInfo
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- CN213388347U CN213388347U CN202021518479.5U CN202021518479U CN213388347U CN 213388347 U CN213388347 U CN 213388347U CN 202021518479 U CN202021518479 U CN 202021518479U CN 213388347 U CN213388347 U CN 213388347U
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Abstract
The utility model provides a heating furnace transfer chain in continuous type glass tempering furnace belongs to the glass tempering field. The glass tempering furnace comprises a conveying roller way and a driving mechanism, wherein a conveying line is divided into a flat speed section, an acceleration section and a rapid section from back to front, the conveying roller way of the flat speed section is controlled by a flat speed motor, the conveying roller way of the acceleration section is controlled by an acceleration motor, the conveying roller way of the rapid section is controlled by a rapid motor, glass moves at a constant speed in the flat speed section, the whole glass enters the acceleration section at a variable speed, the conveying speed is increased, the whole glass enters the rapid section, the acceleration section recovers the original speed to accept subsequent glass after leaving the acceleration section, the glass moves at a constant speed in the rapid section until leaving a furnace door opening, and the glass is limited in the. The utility model discloses a change the conveying frequency of heating furnace transfer chain roll table, inject glass and heated to the required temperature of tempering in the fast transfer stage to overcome glass's "raised grain" phenomenon, ensured glass's roughness, provide the feasibility for ultra-thin glass's large-scale production.
Description
Technical Field
The utility model belongs to the glass tempering field relates to a continuous type glass tempering furnace, specifically relates to the transfer chain of its heating furnace.
Background
The glass tempering furnace is characterized in that a compression stress layer is formed on the surface of glass and a tensile stress layer is formed inside the glass by a physical method; when the glass is acted by external force, the compressive stress layer can offset part of tensile stress, so that the glass is prevented from being broken, and the purpose of improving the strength of the glass is achieved. The glass tempering furnace is mainly divided into a reciprocating tempering furnace and a continuous tempering furnace, the reciprocating tempering furnace occupies small area, but has low production efficiency and lower productivity, and is only suitable for small-scale glass production; compared with a continuous tempering furnace, the continuous tempering furnace has the advantages that the production efficiency is high, the energy consumption is low, the higher requirement on the performance of tempered glass can be guaranteed, the glass does not need to be heated in the furnace in a reciprocating swinging mode in the production process, but is directly heated to the temperature required by tempering according to the preset speed and the set temperature curve until the glass is discharged from the furnace, the possibility that the roller way is scratched when the glass is reversed in a reciprocating mode is reduced, and the temperature rise process of the glass is easier to control. The continuous glass toughening furnace can be used for processing large-scale and high-grade sheet glass in batches, such as ultra-white glass, electronic glass, household appliance glass, solar glass and the like, and has the advantages of high production efficiency, remarkably improved yield and quality and higher practical value.
The glass tempering furnace generally comprises an upper piece platform, a heating furnace, a strengthening and cooling section and a lower piece platform. The glass plate is borne by a conveying roller way and sequentially passes through the sheet loading platform, the heating furnace, the strengthening and cooling section and the sheet unloading platform, the glass to be processed is loaded on the sheet loading platform, high-temperature heating is carried out in the heating furnace, tempering and cooling are carried out in the strengthening and cooling section, and sheet unloading is completed on the sheet unloading platform.
When the glass enters the strengthening and cooling section from the heating furnace, the front end of the glass firstly enters the quenching area to be cooled and is in a contraction state, while the rear end of the glass is still in an expansion state due to the heat, and the temperature difference between the front end and the rear end of the glass can cause the glass to deform or burst. The condition is more obvious when the transmission speed of the roller way is low and the glass area is large. Therefore, when the glass enters the strengthening and cooling section from the heating furnace, the glass needs to run at a faster acceleration, the running time between the two sections is shortened, the temperature difference between the front end and the rear end of the glass is reduced, and the glass explosion condition can be greatly reduced.
In order to overcome the problem of temperature difference between the front end and the rear end of glass, the heating furnace part of the existing continuous glass toughening furnace is provided with an accelerating section at a position close to a furnace outlet, a conveying line of the heating furnace is divided into a horizontal conveying section and an accelerating section, the transmission of a conveying roller way of the accelerating section is independently controlled by an accelerating motor, and the length of the accelerating section is matched with the length of the produced glass and is generally slightly larger than the length of the glass. When the glass tempering furnace is used specifically, glass passes through the flat conveying section at a constant speed and is heated to the temperature required by tempering, then the glass integrally enters the accelerating section, the speed of the glass is changed in the accelerating section, and the glass is quickly conveyed out of the furnace.
However, in the actual production, the conveying method still has many problems: in order to ensure that the glass discharged from the furnace is accelerated to reach the tempering temperature, the glass is heated before entering an acceleration section, the glass is already in a softening state at the moment, the glass enters the acceleration section at a constant speed, in order to ensure that the conveying speeds of front and rear roller ways of the glass are consistent, the acceleration section is butted with a flat speed section before all glass plates enter the acceleration section, the glass runs at the flat speed, however, the roller ways are in line contact with the glass, a certain distance is reserved between the roller ways, the glass moving at a slower speed is easy to soften and deform in the whole process of entering the acceleration section, the glass sags between the roller ways, finally 'wave lines' are formed on the surface of the glass, the quality of a glass finished product is influenced, the glass is seriously directly scrapped, particularly, the wave lines are more obvious, the flatness of the ultra-thin glass in the industry is generally more than 0.2mm, and is difficult to be made below 0.2mm, the flatness of the ultrathin glass produced by the continuous toughening furnace is poor, the yield is low, and the large-scale production of the ultrathin glass is limited.
Therefore, the Chinese patent discloses an air supporting structure of an ultrathin glass tempering furnace, which is disclosed as 2012202952710, wherein a tuyere is arranged between a roller and a roller in a roller conveying roller way in the glass tempering furnace, so that supporting force is formed on the lower surface of the heated ultrathin glass, and the supporting force can avoid the defect that the ultrathin glass deforms after being heated. However, according to the scheme, the air nozzle and the air supply mechanism are additionally arranged, so that the whole structure is complex, the installation is inconvenient, the temperature and the force control of air blowing are higher in requirements, otherwise, the temperature of each region of the glass is uneven, the expansion and contraction degrees of each part of the glass are different, the glass can deform, and the glass is easy to crack during subsequent tempering and cooling.
In summary, in the continuous tempering furnace in the prior art, the glass surface is easy to generate 'wave lines', especially for ultra-thin glass, the deformation is more obvious, and the mass production of the ultra-thin glass is greatly limited, and the solution of arranging the air nozzles between the roller channels has complicated structure, low reliability and many problems, and a new solution is required to be found.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model aims to provide a new solution to overcome glass's "raised grain" phenomenon, specifically provide a heating furnace transfer chain in continuous type glass tempering furnace, improve the easy defect that warp of glass surface, especially to ultra-thin glass, still can enlarge its glass productivity when realizing that glass is smooth, the practicality is stronger.
In order to achieve the above object, the present invention provides the following technical solutions:
a heating furnace conveying line in a continuous glass tempering furnace comprises a conveying roller way and a driving mechanism, wherein the conveying line is divided into a flat speed section, an acceleration section and a rapid section from back to front, the conveying roller way of the flat speed section is controlled by a flat speed motor, the conveying roller way of the acceleration section is controlled by an acceleration motor, the conveying roller way of the rapid section is controlled by a rapid motor, glass moves at a constant speed in the flat speed section, the speed of the whole glass is changed and accelerated after the glass enters the acceleration section, the speed of the glass is increased, the glass enters the rapid section, the acceleration section recovers the original speed to carry subsequent glass after leaving the acceleration section, and the glass moves at the constant speed in the rapid section until; the glass is limited to the temperature required for tempering in the rapid section.
Furthermore, the conveying line is suitable for ultrathin glass with the glass thickness of less than or equal to 2.5 mm.
Furthermore, an auxiliary acceleration section is additionally arranged at the tail end of the conveying line, the structure of the auxiliary acceleration section is consistent with that of the acceleration section, a conveying roller way of the auxiliary acceleration section is controlled by an auxiliary acceleration motor, and the thickness of the glass suitable for the conveying line is not limited at the moment.
Further, when the thickness of the glass is more than 2.5mm, the flat speed section, the acceleration section and the rapid section all run at the flat speed, the glass moves to the auxiliary acceleration section, the whole glass enters the auxiliary acceleration section and then is subjected to speed change, the conveying speed is increased, the glass leaves the auxiliary acceleration section, and the auxiliary acceleration section recovers the original speed after the glass leaves the auxiliary acceleration section; when the thickness of the glass is less than or equal to 2.5mm, the glass is conveyed according to the structure of the first section in the technical scheme, and the roller way of the auxiliary acceleration section adopts the running speed of the rapid section to convey the glass in a uniform and rapid mode.
Furthermore, the acceleration section is divided into a plurality of acceleration zones, and the roller way conveying in each acceleration zone is controlled by a single motor; the original speed of each accelerating area is the running speed of a constant speed section to carry glass, after all the glass enters the accelerating sections, the speed of each accelerating area is changed into the running speed of a rapid section, the glass moves forwards, and the accelerating area behind the tail end of the glass gradually recovers to the running speed of the constant speed section, so that the glass is carried and continuously conveyed.
Further, the lengths of the acceleration zones are arranged equally or unequally.
Further, the length of each acceleration region is gradually enlarged from back to front.
Further, the acceleration section is divided into 3-5 acceleration zones.
Further, the length of the acceleration section is matched with the length of the glass plate.
Furthermore, the motor drives of the acceleration section and the fast section are servo motors.
Compared with the prior art, the utility model, have following advantage:
1. the utility model provides a transfer chain, the section of accelerating on with current heating furnace transfer chain advances, at the same time increase quick section thereafter, glass is restricted and is heated the required temperature of tempering in quick section, glass is heated completely at quick travel's in-process, just remove with the mode of passing through fast before glass heating to softening point, the deformation range that will effectively reduce glass, improve the defect that "raised grain" appears easily on glass surface, can easily reach the national standard requirement, especially be less than or equal to 2.5 mm's ultra-thin glass to glass thickness, the effect is more obvious, glass's roughness can reach below 0.2mm, this is the breakthrough of quality in industry, overcome the unable light easy industry barrier with continuous type tempering furnace production of current ultra-thin glass, the productivity that will improve ultra-thin glass greatly, great social meaning has.
2. The utility model discloses an improve the transfer chain of heating furnace, what mainly changed is the transfer rate of roll table, need not to carry out the institutional advancement to the heating furnace body, convenient and fast, and the degree of consistency that glass is heated is not influenced, utilizes this conveying method to reach the purpose of improving glass "raised grain", and is more reliable, can not let glass produce the uneven phenomenon of being heated, avoids influencing follow-up tempering cooling, influences the product quality.
3. The utility model discloses a transfer chain can use in a flexible way when practical application to tempering furnace, and the tempering furnace tail end can set up a vice section with higher speed again to adapt to the glass production of different thickness, reach a tractor serves several purposes, and the tempering furnace obtains make full use of, thereby has practiced thrift manufacturing cost.
In a word, the utility model provides a new solution, through the conveying frequency who changes heating furnace transfer chain roll table, inject glass and be heated to the required temperature of tempering in the fast transfer stage to overcome glass's "raised grain" phenomenon, ensured glass's roughness, be particularly useful for ultra-thin glass, provide the feasibility for its large-scale production.
Drawings
Fig. 1 is a schematic view of a heating furnace in the prior art.
FIG. 2 is a schematic structural diagram of a heating furnace according to a first embodiment.
FIG. 3 is a schematic view showing the structure of a heating furnace according to the second embodiment.
Fig. 4 is a structural diagram of an acceleration section in the first and second embodiments.
FIG. 5 is a schematic view of a glass transfer process according to the first embodiment.
FIG. 6 is a schematic view of a glass transfer process according to a first application of the second embodiment.
FIG. 7 is a schematic view of a glass transfer process according to a second application of the second embodiment.
FIG. 8 is a schematic representation of the wave-texturing of a prior art glass.
Fig. 9 is a schematic view of the glass surface produced by the present invention.
In the figure, 1, a conveying line; 10. a rollgang; 11. a speed-balancing section; 12. an acceleration section; 121. an acceleration area I; 122. an acceleration area II; 123. an acceleration area III; 124. an acceleration area IV; 13. a fast segment; 14. a secondary acceleration section; 2. a transport mechanism; 21. a constant speed motor; 22. an acceleration motor; 221. the acceleration area is provided with a motor; 222. A second motor in the acceleration area; 223. a third motor in the acceleration area; 224. the acceleration zone is provided with four motors; 23. a fast motor; 24; a secondary acceleration motor; 3. a furnace door opening; 4. glass; g1, front glass; g2, rear glass.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the ordinary skilled in the art without creative work should be considered as belonging to the protection scope of the present invention.
Example one
Fig. 1 is a schematic structural diagram of a heating furnace in the prior art. The heating furnace of the continuous tempering furnace mainly comprises a furnace body, a conveying line 1, a conveying mechanism 2 and a heating device (not shown in the figure); in order to overcome the problem of temperature difference between the front end and the rear end when glass enters a strengthening cooling section, an accelerating section 12 is arranged at a position close to a furnace door 3 of a heating furnace part of the existing continuous glass toughening furnace, a conveying line 1 of the heating furnace is divided into a horizontal conveying section 11 and an accelerating section 12, the transmission of a conveying roller way 10 of the accelerating section is independently controlled by an accelerating motor 22, and the length of the accelerating section 12 is matched with the produced glass and is generally slightly larger than the length of the glass. When the device is used specifically, the glass 4 passes through the flat conveying section 11 at a uniform speed and is heated to the temperature required by tempering, then the whole glass enters the accelerating section 12, and the glass is conveyed out of the furnace quickly after the speed of the glass is changed in the accelerating section 12.
However, in practical production, the conveying line and the conveying method still have many problems: in order to ensure that the glass discharged from the furnace is accelerated to reach the toughening temperature, the glass is controlled to be heated before entering the acceleration section 12, and at the moment, the glass is already close to a softening state (the discharging temperature of the glass is close to the softening point temperature of the glass, the furnace temperature of the heating furnace is set to be about 80 ℃ higher than the discharging temperature of the glass (680-720 ℃), otherwise, the temperature is low, the heating is insufficient, the toughening quality of the glass is affected, meanwhile, the thinner the glass is, the higher the furnace temperature is set, the reason is that 1, the thin glass is more transparent, so most of the heat radiation in the furnace penetrates through the glass without heating the glass, 2, when the glass enters a quenching zone, the thinner the glass is, the required glass temperature is higher, otherwise, the glass is cracked in an air grid, so the glass is very easy to soften when the glass is heated to the final stage), the glass enters the acceleration section at a constant speed, in, the acceleration section 12 is butted with the flat speed section 11 before the glass plate completely enters, and runs at a flat speed, however, the conveying roller ways are in line contact with the glass, a certain distance is reserved between the conveying roller ways, the glass moving at a slower speed is easily softened and deformed in the process that the glass integrally enters the acceleration section 12, and sags between the conveying roller ways, as shown in fig. 8, finally, wave grains are formed on the surface of the glass, the quality of a glass finished product is influenced, serious direct scrapping is carried out, particularly, the wave grains are more obvious for the ultra-thin glass, the flatness of the ultra-thin glass produced by the continuous tempering furnace is not good, the yield is low, and the large-scale production of the ultra-thin glass is limited.
In order to overcome the phenomenon of "raised grain" of glass as described above, the embodiment of the utility model provides a transfer chain of heating furnace in continuous type glass tempering furnace, specifically, as shown in fig. 2, its transfer chain is divided into flat velocity section 11, acceleration section 12, fast section 13 by back to front, the transfer table of flat velocity section 11 is controlled by flat velocity motor 21, the transfer table of acceleration section 12 is controlled by acceleration motor 22, the transfer table of fast section 13 is controlled by fast motor (23), glass is at flat velocity section 11 uniform motion, the conveying speed of flat velocity section is counted as VFlat plate(ii) a The whole glass enters the accelerating section 12, then the speed is changed, the conveying speed is accelerated, the glass enters the rapid section 13, the accelerating section 12 recovers the original speed to accept the subsequent glass after the glass leaves the accelerating section 12, the glass rapidly moves at the uniform speed in the rapid section 13 until the glass leaves the furnace door 3, and the glass is conveyed in the rapid sectionSpeed of delivery is counted as VFast-acting toy(ii) a The glass is confined to the temperature required for tempering in the fast section 13.
Specifically, the glass passes through a flat velocity section 11, an acceleration section 12, and a fast velocity section 13 in this order, and is continuously heated; the constant velocity section 11 is at VFlat plateThe speed of the glass is driven to convey the glass at a constant speed, and the fast section 13 is V-shapedFast-acting toyThe speed of the glass drives the glass to be conveyed at a uniform speed VFast-acting toy>VFlat plate(ii) a The acceleration section 12 controls the glass to be conveyed in a variable speed, and the conveying speed of the acceleration section is V before the glass completely enters the acceleration section 12Flat plateAfter the glass completely enters the acceleration section, the acceleration section 12 changes the conveying speed to VFast-acting toyAfter the glass leaves the acceleration section completely, the acceleration section 12 returns to the conveying speed VFlat plate。
In order to expand the glass capacity and achieve continuous glass conveyance, in this embodiment, the acceleration section 12 is divided into a plurality of acceleration zones, as shown in fig. 4, 4 acceleration zones (a chain between a motor and a transmission shaft is not shown in the figure, but should not affect understanding), which are an acceleration zone one 121, an acceleration zone two 122, an acceleration zone three 123, and an acceleration zone four 124, respectively, roller table conveyance in each acceleration zone is controlled by a single motor, specifically, the acceleration zone one 121 controls the conveying speed of the roller table in this section by an acceleration zone one motor 221, the acceleration zone two 122 controls the conveying speed of the roller table in this section by an acceleration zone two motor 222, the acceleration zone three 123 controls the conveying speed of the roller table in this section by an acceleration zone three motor 223, and the acceleration zone four 124 controls the conveying speed of the roller table in this section by an acceleration zone four motor 224. The original speed of each acceleration zone is VFlat plateTo receive the glass, after the glass completely enters the accelerating section, the speed of each accelerating section is changed into V simultaneouslyFast-acting toyThe glass moves forward, and the accelerating region behind the tail end of the glass gradually returns to the original speed VFlat plateSo as to receive the following glass and realize the uninterrupted conveying of the glass. In fact, the best is to divide the acceleration section into 3-5, as shown in fig. 2-4, the acceleration section is set as 4 acceleration areas, each acceleration area is independently operated by an acceleration motor, and the conveying of the roller ways of the areas is realized by independent motors matched with independent conveying shafts.
The lengths of the accelerating regions are arranged evenly or unevenly, and the lengths of the accelerating regions in the embodiment are gradually enlarged from back to front, so that the glass can be more stably transited in all regions.
The heating temperature of the glass in the rapid section can be effectively limited by controlling the length of the rapid section or the heating time of the rapid section, and finally the glass is heated to the temperature required by tempering. Meanwhile, the temperature sensor and the glass position sensor are used as auxiliary devices, so that the heating condition of the glass in the rapid section can be controlled more accurately.
The glass conveying speed is related to the length of the heating furnace and the thickness of the glass, and generally, the longer the length of the heating furnace is, the faster the conveying speed is; the smaller the thickness of the glass, the shorter the heating time required and the faster the drive speed. Taking a 32m long furnace as an example, some examples of data are provided in the following table, but not limited to this data:
| glass thickness (mm) | Total heating time(s) | VFlat plate(mm/s) | VFast-acting toy(mm/s) |
| 3.2 | 120 | 350 | 650 |
| 2.5 | 100 | 450 | 800 |
| 2.0 | 80 | 500 | 1000 |
VFlat plateIs determined according to the length of the heating furnace and the thickness of the glass. Velocity V of the fast sectionFast-acting toyAnd the tempering quenching section after the heating furnace is butted, and the tempering quenching section is mainly determined according to the thickness of glass and the distance between rollers. The length of the flash section is also determined by the heating time and VFast-acting toyAnd (4) determining.
As shown in FIG. 5, the glass transfer process in this embodiment is simplified. For convenience in describing the glass transfer process, the acceleration section 12 is simplified here to 3 zones:
as shown in FIG. 5A, the glass is always at V during the flat velocity stage (before entering the acceleration stage)Flat plateThe speed of the roller way is uniform and the running speeds of the roller ways in the three accelerating areas of the accelerating section are all VFlat plateThe running speed of the fast section is V fast all the time;
as shown in FIG. 5B, the running speeds of the three acceleration regions of the acceleration section are all V during the front glass G1 enters the acceleration section until the front glass enters the acceleration section integrallyFlat plateWhile the rear glass G2 is at a constant speed with VFlat plateThe speed of the moving body is uniform and the moving body moves forwards for standby;
as shown in FIG. 5C, after the front glass G1 is entirely entered into the acceleration section, the three acceleration regions of the acceleration section are simultaneously shifted to VFast-acting toy；
As shown in FIG. 5D, the front glass G1 is at VFast-acting toyIs moved away from the first acceleration zone and is changed into V after leaving the first acceleration zoneFlat plateAt this time, the first acceleration region can be connected to the rear glass G2, so that G2 is V-shaped in the first acceleration regionFlat plateThe speed transmission of the glass does not influence the butt joint of the glass in an acceleration area and a constant speed area; at the moment, the second acceleration zone and the third acceleration zone are still at VFast-acting toyThe glass is conveyed at a speed of not influencing the butt joint of the acceleration area and the uniform speed area;
as shown in FIG. 5E, the front glass G1 is at VFast-acting toyThe speed of the second acceleration zone is changed into V after leaving the second acceleration zoneFlat plateAt this time, the acceleration region twoCan be connected with the rear glass G2 to make G2 have a V value in the first and second acceleration regionsFlat plateAt a speed of V, while the acceleration zone III is still at VFast-acting toyConveying the glass at a speed of (1);
as shown in FIG. 5F, the front glass G1 is at VFast-acting toyThe speed of V is V after leaving the acceleration zone and completely entering the fast zoneFast-acting toyThe glass is conveyed at the speed of (1) and is heated to the temperature required by tempering in the process of moving in the rapid zone; three speed changes to V in the acceleration zone after the front glass G1 leaves the acceleration zone and three timesFlat plateAt this time, the third acceleration region can be connected to the rear glass G2, so that G2 is V-shaped in the first, second and third acceleration regionsFlat plateUntil the acceleration zone is completely entered; then, the conveying operation of 5C to 5F is repeated for the rear glass G2, and the glass is continuously conveyed.
Traditional roll table variable speed is that motor cooperation reduction gear accomplishes, the utility model discloses the roll table of section and quick section all adopts servo motor to drive the transmission with higher speed, can realize along with opening the variable speed of stopping, and the reaction is accurate sensitive more.
The length of the acceleration section is matched with the length of the glass plate, and is generally slightly longer than the length of the glass, so that the conveying time of the glass in the acceleration section is reduced, and sufficient time is provided for heating of the rapid section.
The conveying line provided by the embodiment of the utility model advances the acceleration section on the existing heating furnace conveying line, and simultaneously increases the rapid section behind the heating furnace conveying line, when the rapid butt joint of the heating furnace section and the tempering cooling section is not influenced, the glass is limited to be heated to the temperature required by tempering in the rapid section, namely the glass is completely heated in the rapid moving process, and the glass is moved in a rapid passing mode before being heated to a softening point, so that the deformation amplitude of the glass is effectively reduced, as shown in figure 9, the defect that the glass surface is easy to generate 'wave lines' is improved, the defect that the glass is easy to bend under the hot condition is solved, the flatness of the heated glass is ensured, the flatness of the glass can easily reach the national standard requirement, especially, the effect is more obvious, the flatness of the glass can reach below 0.2mm, overcomes the industrial barrier that the prior ultrathin glass can not be easily produced by a continuous toughening furnace, greatly improves the productivity of the ultrathin glass and has great social significance.
The embodiment of the utility model provides a through the transfer chain that improves the heating furnace, what mainly changed is the transfer rate of roll table, need not to carry out the structural transformation to the heating furnace body, convenient and fast, and the degree of consistency that glass is heated is not influenced, utilizes this conveying method to reach the purpose of improving glass "raised grain", and is more reliable, can not let glass produce the uneven phenomenon of being heated, avoids influencing follow-up tempering cooling, influences the product quality.
Example two
Compared with the first embodiment, in the present embodiment, as shown in fig. 3, a secondary acceleration section 14 is added behind the fast section 13, and the secondary acceleration section 14 controls the conveying speed by a secondary acceleration motor 24.
In the present embodiment, when the glass thickness is greater than 2.5mm, as shown in fig. 6, the flat speed section 11, the acceleration section 12, and the fast speed section 13 all run at a flat speed, the glass moves to the auxiliary acceleration section 14, and the speed of the whole glass enters the auxiliary acceleration section 14 and then is changed, so that the conveying speed is increased, the glass leaves the auxiliary acceleration section 14, and then the auxiliary acceleration section 14 recovers the original speed, for thicker glass, the running speed of the roller table has little influence on the glass deformation, and only the auxiliary acceleration section 14 can be used.
The structure of the auxiliary acceleration section 14 is the same as that of the acceleration section 12, and the auxiliary acceleration section can be divided into a plurality of auxiliary acceleration regions, and each auxiliary acceleration region is provided with an independent acceleration motor.Glass accessThe process of the secondary acceleration section 14 is consistent with the transmission operation in embodiments 5C to 5F, and the speed is changed in segments, which can be shown in the figure for details and will not be described herein.
When the glass thickness is less than or equal to 2.5mm, the auxiliary acceleration section 14 is formed as a part of the fast section 13, as shown in FIG. 7, and is always VFast-acting toyIs run at speed.
The utility model discloses a method when practical application to tempering furnace, can use in a flexible way, the tempering furnace tail end can set up a vice section of accelerating again to adapt to the glass production of different thickness, reach a tractor serves several purposes, the tempering furnace obtains make full use of, thereby has practiced thrift manufacturing cost.
In a word, the utility model provides a new solution, through the transport mode who changes heating furnace transfer chain roll table, inject glass and be heated to the required temperature of tempering in the fast transfer stage to overcome glass's "raised grain" phenomenon, ensured glass's roughness, be particularly useful for ultra-thin glass, provide the feasibility for its large-scale production.
Utilize technical scheme, or technical personnel in the field are in the utility model discloses under technical scheme's the inspiration, design similar technical scheme, and reach above-mentioned technological effect, all fall into the utility model discloses a protection scope.
Claims (10)
1. A heating furnace conveying line in a continuous glass tempering furnace comprises a conveying roller way and a driving mechanism, and is characterized in that the conveying line is divided into a flat-speed section (11), an acceleration section (12) and a rapid section (13) from back to front, the conveying roller way of the flat-speed section (11) is controlled by a flat-speed motor (21), the conveying roller way of the acceleration section (12) is controlled by an acceleration motor (22), the conveying roller way of the rapid section (13) is controlled by a rapid motor (23), glass moves at a constant speed in the flat-speed section (11), the speed of the whole glass enters the acceleration section (12) after being changed in speed and accelerated to enter the rapid section (13), the acceleration section (12) recovers the original speed to accept subsequent glass after the glass leaves the acceleration section (12), and the glass moves at a constant speed in the rapid section (13) until leaving a furnace door (3); the glass is limited in the fast section (13) and heated to the temperature required for tempering.
2. The heating furnace transfer line for a continuous glass tempering furnace according to claim 1, wherein the transfer line is adapted to ultra-thin glass having a glass thickness of 2.5mm or less.
3. The heating furnace conveyor line in the continuous glass tempering furnace according to claim 1, wherein a sub-acceleration section (14) is added at the tail end of the conveyor line, the structure of the sub-acceleration section (14) is identical to that of the acceleration section (12), and a conveying roller table of the sub-acceleration section (14) is controlled by a sub-acceleration motor (24), and the thickness of the glass to which the conveyor line is applied is not limited.
4. The heating furnace conveyor line in the continuous glass tempering furnace according to claim 3, wherein when the thickness of the glass is more than 2.5mm, the flat speed section (11), the acceleration section (12) and the fast speed section (13) all run at the flat speed, the glass moves to the auxiliary acceleration section (14), the speed is changed after the glass integrally enters the auxiliary acceleration section (14), the conveying speed is increased, the glass leaves the auxiliary acceleration section (14), and the auxiliary acceleration section (14) recovers the original speed after the glass leaves the auxiliary acceleration section (14); when the thickness of the glass is less than or equal to 2.5mm, the glass is conveyed according to the structure of claim 1, and the roller way of the auxiliary acceleration section (14) adopts the running speed of the rapid section (13) to convey the glass in a uniform and rapid manner.
5. The heating furnace transfer line in the continuous glass tempering furnace according to any one of claims 1 to 4, wherein the acceleration section (12) is divided into a plurality of acceleration sections, and roller table transfer in each acceleration section is controlled by a separate motor; the original speed of each acceleration zone is the running speed of the constant-speed section (11) to carry glass, after all the glass enters the acceleration section (12), the speed of each acceleration zone is changed into the running speed of the rapid section (13), the glass moves forwards, and the acceleration zone behind the tail end of the glass gradually recovers to the running speed of the constant-speed section (11) to carry the following glass, so that the uninterrupted conveying of the glass is realized.
6. The heating furnace transfer line for a continuous glass tempering furnace according to claim 5, wherein lengths of the respective acceleration sections are arranged equally or unequally.
7. The heating furnace transfer wire in the continuous glass tempering furnace according to claim 6, wherein the length of each acceleration section is gradually enlarged from the rear to the front.
8. The heating furnace transfer line in the continuous glass tempering furnace according to claim 7, wherein the acceleration section (12) is divided into 3 to 5 acceleration zones.
9. The heating furnace transfer line in the continuous glass tempering furnace according to claim 8, wherein the length of the acceleration section (12) is adapted to the length of the glass sheet.
10. The heating furnace transfer line in the continuous glass tempering furnace according to claim 1, wherein the motor drives of the acceleration section (12) and the fast section (13) are servo motors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021518479.5U CN213388347U (en) | 2020-07-28 | 2020-07-28 | Heating furnace conveying line in continuous glass tempering furnace |
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