CN114409236B - Trimming and polishing process for hot glass on float glass manufacturing line - Google Patents
Trimming and polishing process for hot glass on float glass manufacturing line Download PDFInfo
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- CN114409236B CN114409236B CN202210124678.5A CN202210124678A CN114409236B CN 114409236 B CN114409236 B CN 114409236B CN 202210124678 A CN202210124678 A CN 202210124678A CN 114409236 B CN114409236 B CN 114409236B
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- 238000009966 trimming Methods 0.000 title claims abstract description 221
- 239000011521 glass Substances 0.000 title claims abstract description 157
- 239000005329 float glass Substances 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 238000007517 polishing process Methods 0.000 title claims abstract description 23
- 238000005498 polishing Methods 0.000 claims abstract description 193
- 238000000034 method Methods 0.000 claims abstract description 33
- 238000000137 annealing Methods 0.000 claims description 54
- 229910001220 stainless steel Inorganic materials 0.000 claims description 20
- 239000010935 stainless steel Substances 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 16
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 14
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims description 14
- 239000001301 oxygen Substances 0.000 claims description 14
- 229910052760 oxygen Inorganic materials 0.000 claims description 14
- 239000007789 gas Substances 0.000 claims description 11
- 238000006124 Pilkington process Methods 0.000 claims description 8
- 239000000446 fuel Substances 0.000 claims description 8
- 239000005357 flat glass Substances 0.000 claims description 6
- 238000007688 edging Methods 0.000 abstract description 7
- 230000033001 locomotion Effects 0.000 description 10
- 238000001125 extrusion Methods 0.000 description 8
- 239000007921 spray Substances 0.000 description 7
- 238000002156 mixing Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 3
- 239000006060 molten glass Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B29/00—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins
- C03B29/04—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a continuous way
- C03B29/06—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a continuous way with horizontal displacement of the products
- C03B29/08—Glass sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B25/00—Annealing glass products
- C03B25/04—Annealing glass products in a continuous way
- C03B25/06—Annealing glass products in a continuous way with horizontal displacement of the glass products
- C03B25/08—Annealing glass products in a continuous way with horizontal displacement of the glass products of glass sheets
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
The invention relates to a trimming and polishing process of hot glass on a float glass production line, which is characterized in that a longitudinal trimming and polishing device and a transverse trimming and polishing device are used for carrying out longitudinal trimming and polishing treatment and transverse trimming and polishing treatment on a high-temperature glass plate on the float glass production line. The high-temperature glass trimming and polishing process sequentially comprises a longitudinal trimming and polishing process and a transverse trimming and polishing process, the processed glass enters a next deep processing process, the later stage of the edge of the glass processed by the trimming and polishing process is not required to be subjected to edging, the process is operated on a float glass production line at the temperature of 500-650 ℃, the whole process is operated at a high temperature, the glass processed by the process is accurate in size, the edge of the glass is trimmed straight and smooth, neat and free of edge breakage, the quality of the edge of the glass is far better than that of a product produced by the glass edging process in a traditional normal temperature state, and the technical requirement of glass deep processing is completely met.
Description
Technical Field
The invention belongs to the technical field of glass deep processing, and particularly relates to a trimming and polishing process of hot glass on a float glass production line.
Background
Float glass is a glass which is obtained by polishing and shaping a molten glass by floating the molten glass on the surface of molten metal, wherein the molten glass flows from a melting furnace into a tin bath filled with protective gas (nitrogen and hydrogen) and floats on the surface of the molten tin, and a glass belt which has uniform thickness, parallel two surfaces and is flat and polished is formed by flattening and polishing, and is a sheet glass.
After hot cutting/dividing the plate in a high temperature state (500-650 ℃) on the float glass production line, the glass needs to be trimmed and polished in the high temperature state, so that the next processing quality can be ensured, and the safety and reliability in the final use can be ensured. However, a method for trimming and polishing at high temperature is not disclosed, trimming and polishing are usually carried out at normal temperature in the prior art, and the uniformity and smoothness of the glass edge are low.
The present invention has been made in view of the above-mentioned circumstances.
Disclosure of Invention
The invention provides a trimming and polishing process for hot glass on a float glass production line, which aims to solve the technical difficulty of trimming and polishing on the float glass production line.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a trimming and polishing process of thermal state glass on a float glass production line comprises the steps of respectively carrying out longitudinal trimming and polishing treatment and transverse trimming and polishing treatment on a high-temperature glass plate on the float glass production line by a longitudinal trimming and polishing device and a transverse trimming and polishing device, wherein the longitudinal trimming and polishing device is arranged on two side edges in an annealing kiln, the transverse trimming and polishing device is arranged above a roller way of the annealing kiln, and the process specifically comprises the following steps:
(1) After the longitudinal edge breaking process of the annealing kiln B area of the flat glass float production line, the glass plate enters a longitudinal trimming and polishing area, when the glass plate moves to the area, an annealing kiln roller way with independent transmission slowly moves, and longitudinal trimming and polishing devices arranged on two sides of the annealing kiln are close to the longitudinal edge of the glass plate and synchronously move on the glass plate, so that the trimming and polishing of the longitudinal edge of the glass plate are finished;
(2) The glass plate subjected to longitudinal edge trimming and polishing continuously moves on the annealing kiln roller way in a transmission way, enters a transverse trimming and polishing area, and when the glass plate enters the area, the annealing kiln roller way is suspended, the transverse trimming and polishing device moves and abuts against the front transverse edge and the rear transverse edge of the glass plate, and the transverse trimming and polishing device swings transversely, so that the transverse trimming and polishing of the glass plate is completed.
Further, the temperature of the high-temperature glass is 500-650 ℃.
Further, the longitudinal trimming and polishing device and the transverse trimming and polishing device have the same structure and are composed of a plurality of trimming and polishing unit components and an executing mechanism, wherein the trimming and polishing unit components comprise polishing wheels and trimming flame guns, the polishing wheels and the trimming flame guns are arranged in one-to-one correspondence, and the executing mechanism is connected with the polishing wheels and the trimming flame guns. The executing mechanism of the invention is signaled by a control center to execute various actions, and the control center is composed of a PLC controller, a computer terminal, a photoelectric sensor and the like.
The longitudinal trimming and polishing treatment principle is as follows: when a float glass plate with a certain size enters a longitudinal trimming and polishing area, a control center sends a signal to enable an annealing kiln roller table with independent transmission to operate at a proper speed, and simultaneously trimming and polishing unit components arranged on two sides in the annealing kiln simultaneously move towards the middle of the annealing kiln to enable a polishing wheel to contact with the longitudinal edge of the glass plate, at the moment, the control center sends a signal, a trimming flame gun is opened and aligned with the longitudinal edge of the glass plate to spray fire, the edge of the glass plate in operation is heated and softened under the action of flame, then a very smooth and tidy glass edge is formed under the extrusion action of the polishing wheel, and the glass plate after longitudinal trimming and polishing treatment continues to operate and is turned to a next transverse trimming and polishing procedure.
The speed of the annealing kiln roller way with independent transmission is in the range of 5-20m/min, the speed is controlled by a control center, and variable frequency speed regulation is adopted for transmission.
The principle of the transverse trimming and polishing treatment is as follows: when the glass plate enters into the transverse trimming and polishing area, the roller table with independent transmission is sent by the control center to stop running, the trimming and polishing unit components (front group and rear group) arranged at the upper part of the annealing kiln simultaneously move towards the lower part of the annealing kiln, so that the center line of the V-shaped groove of the polishing wheel coincides with the center line of the thickness of the glass, then the polishing wheel moves towards the direction close to the glass, so that the polishing wheel contacts with two transverse edges of the glass, then the transverse trimming and polishing device moves reciprocally along the transverse edges of the glass plate, and simultaneously, the control center sends a signal, the flame gun is opened to align with the transverse edges of the glass for flaming, the edges of the glass are heated and softened under the action of flame, and smooth and tidy glass edges are formed under the extrusion action of the polishing wheel. And the glass plate after the transverse trimming and polishing treatment continues to run for the next working procedure.
Further, the longitudinal trimming and polishing device is also connected with a first lifting adjusting mechanism and a first transverse moving mechanism, and the transverse trimming and polishing device is also connected with a second lifting adjusting mechanism, a second transverse moving mechanism and a longitudinal moving mechanism.
The longitudinal trimming and polishing device simultaneously runs towards the middle part of the annealing kiln through a first transverse movement mechanism, the first transverse movement mechanism is completed by a cylinder group consisting of a plurality of cylinders, the cylinder group is fixed on the outer wall of the annealing kiln, one end of a cylinder rod extends into the kiln and is connected with a trimming and polishing unit part to drive transverse movement to be close to a float glass plate, the longitudinal trimming and polishing device is also connected with a first lifting and adjusting mechanism, and the first lifting and adjusting mechanism is provided with a transverse rail support and can finely adjust the upper position and the lower position, so that lifting and adjusting are realized. The movement of the cylinder is signaled by the control center.
The transverse trimming and polishing device runs to the lower part of the annealing kiln through a second lifting and adjusting mechanism, the second lifting and adjusting mechanism is completed by a cylinder group consisting of a plurality of cylinders, the cylinder group is fixed on the outer top of the annealing kiln, one end of a cylinder rod extends into the kiln and is connected with a transverse trimming and polishing unit component to drive the cylinder rod to move downwards to be close to a float glass plate, and a fixed-stroke cylinder can enable the center line of a V-shaped groove of a polishing wheel to be accurately consistent with the center line of the thickness of glass. The transverse trimming and polishing device moves towards the glass edge and is realized by a longitudinal movement mechanism, namely a cylinder group connected to a polishing wheel and a flame gun.
The transverse trimming and polishing device reciprocates along the transverse edge of the glass plate and is realized by a second transverse movement structure, namely, a reciprocating transmission mechanism connected to the transverse trimming and polishing device is finished, and the movement pitch of the transverse trimming and polishing device is about 250 mm.
The speed range of the annealing kiln transverse trimming polishing roller way with independent transmission is 2-10m/min, the speed is controlled by a control center, and the transmission adopts variable frequency speed regulation.
The glass plate after the transverse trimming and polishing treatment continues to go forward to turn to an on-line tempering process, and a control center sends a message to reset the trimming device and wait for the next glass to be in place.
Further, the longitudinal trimming and polishing device is arranged on two side edges in the annealing kiln at the rear part of the longitudinal edge breaking area of the annealing kiln B.
Further, 5-10 edging and polishing unit components are arranged on each side edge.
Further, the transverse trimming and polishing device is arranged behind the longitudinal trimming and polishing area of the annealing kiln B area, is positioned at the upper part of the roller way of the annealing kiln and is parallel to the roller way.
Further, front and rear sets of edging and polishing unit components are provided, and 20 edging and polishing unit components in each set are provided.
Furthermore, the polishing wheel consists of a heat-resistant stainless steel wheel body and a high-temperature bearing, the trimming flame gun consists of a flame gun body and a gas tube, and the trimming flame gun is made of heat-resistant stainless steel.
Further, the heat-resistant temperature of the polishing wheel is more than 700 ℃, and the heat-resistant temperature of the trimming flame gun is more than 700 ℃.
Further, the stainless steel wheel body is provided with a V-shaped groove in the middle, so that the edge of the glass plate is just clamped, and the stainless steel wheel body is symmetrically arranged by taking the V-shaped groove as a center.
Further, the flame temperature sprayed by the trimming flame gun is 1500-3000 ℃, and the fuel of the trimming flame gun is mixed gas of acetylene and oxygen.
In the trimming and polishing process, the flame rapidly heats the edge of the glass to a softening point, and the longitudinal edge or the transverse edge of the glass is trimmed by a polishing wheel.
The polishing wheel can rotate, the circumferential edge of the polishing wheel is provided with a V-shaped groove, the V-shaped groove is just clamped at the longitudinal edge of glass during trimming and polishing, and the edge of the glass which is burned to a softening point by a trimming flame gun is trimmed into a smooth and tidy glass edge under the action of the polishing wheel groove.
Compared with the prior art, the invention has the beneficial effects that:
the high-temperature glass trimming and polishing process sequentially carries out longitudinal trimming and polishing treatment and transverse trimming and polishing treatment, the treated glass enters the next deep processing procedure, the later stage of the glass edge part treated by the trimming and polishing procedure does not need edging treatment, the process is operated at the high temperature on a float glass production line at the temperature of 500-650 ℃, the whole longitudinal trimming and polishing and transverse trimming and polishing processes are accurate in size, the glass edge part is trimmed straight and smooth, and the edge part quality is far better than that of a product produced by the glass edging process in the traditional normal temperature state, and the technical requirement of glass deep processing is completely met.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Figure 1 is a schematic view of the polishing wheel of the present invention;
FIG. 2 is a schematic view of the structure of the trimmed flame gun of the invention;
reference numerals
1-glass plate, 2-V-shaped groove, 3-trimming flame gun, 4-flame gun.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
A schematic of the structure of the polishing wheel and the structure of the trimming flame gun according to the present invention are shown in fig. 1 and 2.
Example 1
On a 600t/d float production line, the original plate width is 4000mm, and the main line glass plate speed is 8-9 m/min when 5mm glass is produced. The plate surface size after the online cutting is 3662 multiplied by 2442mm, and trimming and polishing treatment is carried out on the plate surface.
The trimming and polishing process of the hot glass on a production line for manufacturing float glass, wherein the temperature of the high-temperature glass is 500-650 ℃, and the specific process is as follows:
(1) After the longitudinal edge breaking process of the annealing kiln B area of the flat glass float production line, the glass plate 1 enters a longitudinal trimming polishing area, when the glass plate runs to the area, an annealing kiln roller way with independent transmission is driven by a control center to run at a proper speed, and meanwhile, longitudinal trimming polishing unit parts arranged on two sides of the annealing kiln run towards the middle of the annealing kiln at the same time, so that the V-shaped groove 2 of the polishing wheel is contacted with the longitudinal edge part of glass, a flame gun is opened and aligned with the longitudinal edge of the glass to spray fire, and the edge part of the glass in running is heated and softened under the action of flame, and then a very smooth and neat glass edge is formed under the extrusion action of the V-shaped groove 2 of the polishing wheel. The glass plate 1 subjected to longitudinal trimming continues to run and turn to the next transverse trimming and polishing process;
the longitudinal trimming polishing device consists of 2X 8 polishing wheels and trimming flame 3 guns which are respectively arranged at two sides of the annealing kiln, the polishing wheels and the trimming flame guns 3 are controlled to run by a control center, the control center is respectively in communication connection with the polishing wheels and the trimming flame guns 3, and the polishing wheels and the trimming flame guns 3 are correspondingly arranged one by one. The polishing wheel consists of a heat-resistant stainless steel wheel body and a high-temperature bearing, the trimming flame gun consists of a flame gun body and a gas tube, and the trimming flame gun is made of heat-resistant stainless steel. The fuel 4 of the trimming flame gun is formed by mixing acetylene and oxygen according to the volume ratio of 2:5, the pressure of the acetylene gun is 0.07MPa, the pressure of the oxygen gun is 0.4MPa, and the temperature of the flame (front part) sprayed by the trimming flame gun 3 is 2000 ℃.
(2) The glass plate 1 subjected to longitudinal trimming and polishing in the step (1) goes forward to a transverse trimming procedure, when the glass plate 1 enters a transverse trimming and polishing area, a control center transmits signals to enable a roller table with independent transmission to stop running, trimming and polishing unit components (a front group and a rear group) arranged above a roller table of an annealing kiln move towards the lower part of the annealing kiln, so that the central line of a V-shaped groove 2 of a polishing wheel coincides with the central line of the thickness of the glass plate 1, at the moment, the polishing wheel moves towards the direction close to glass again, so that the polishing wheel contacts with two transverse edges of the glass, then a transverse trimming and polishing device reciprocates along the transverse edges of the glass plate 1, and simultaneously controls the center to transmit signals, a trimming flame gun 3 is opened and aligned with the transverse edges of the glass plate to spray fire, the edges of the glass are heated and softened under the action of flame, and smooth and neat glass edges are formed under the extrusion action of the polishing wheel;
the transverse trimming and polishing device consists of 20 unit components in each row (front row and rear row respectively), the unit components are a polishing wheel and a trimming flame gun, the polishing wheel and the trimming flame gun are arranged in one-to-one correspondence, the polishing wheel is composed of a heat-resistant stainless steel wheel body and a high-temperature bearing, the trimming flame gun is composed of a flame gun body and a gas tube, and the trimming flame gun is made of heat-resistant stainless steel. The distance between adjacent unit components is 200mm, the reciprocating motion pitch is 250mm, the fuel 4 of the trimming flame gun is formed by mixing acetylene and oxygen according to the volume ratio of 2:5, the pressure of the acetylene gun is 0.07MPa, the pressure of the oxygen gun is 0.4MPa, and the temperature of flame (front part) sprayed by the trimming flame gun 3 is 2000 ℃.
The glass plate after the transverse trimming and polishing treatment continues to go forward and is turned to the next procedure, and the control center sends out a message to reset the transverse trimming and polishing device and wait for the next glass to be in place. The glass plate subjected to trimming and polishing treatment in the embodiment has the dimensions of 3660.5 multiplied by 2440.7mm, the diagonal deviation of 2.6mm, and the glass edge trimming is flat and smooth, neat and free of edge breakage, and completely meets the technical requirements of glass deep processing.
Example 2
On a 600t/d float production line, the original plate width is 4000mm, and the main line glass plate speed is 5-7 m/min when 8mm glass is produced. The plate surface size after the online cutting is 3660 multiplied by 2440mm, and trimming and polishing treatment is carried out on the plate surface.
The trimming and polishing process of the hot glass on a production line for manufacturing float glass, wherein the temperature of the high-temperature glass is 500-650 ℃, and the specific process is as follows:
(1) After the longitudinal edge breaking process of the annealing kiln B area of the flat glass float production line, the glass plate 1 enters a longitudinal trimming polishing area, when the glass plate runs to the area, an annealing kiln roller way with independent transmission is driven by a control center to run at a proper speed, and meanwhile, longitudinal trimming polishing unit parts arranged on two sides of the annealing kiln run towards the middle of the annealing kiln at the same time, so that the V-shaped groove 2 of the polishing wheel is contacted with the longitudinal edge part of glass, a flame gun is opened and aligned with the longitudinal edge of the glass to spray fire, and the edge part of the glass in running is heated and softened under the action of flame, and then a very smooth and neat glass edge is formed under the extrusion action of the V-shaped groove 2 of the polishing wheel. The glass plate 1 subjected to longitudinal trimming continues to run and turn to the next transverse trimming and polishing process;
the longitudinal trimming polishing device consists of 2X 8 polishing wheels and trimming flame guns 3, wherein the polishing wheels and the trimming flame guns 3 are respectively arranged on two sides of the annealing kiln, the polishing wheels and the trimming flame guns 3 are controlled to run by a control center, the control center is respectively in communication connection with the polishing wheels and the trimming flame guns 3, and the polishing wheels and the trimming flame guns 3 are correspondingly arranged one by one. The polishing wheel consists of a heat-resistant stainless steel wheel body and a high-temperature bearing, the trimming flame gun consists of a flame gun body and a gas tube, and the trimming flame gun is made of heat-resistant stainless steel. The fuel 4 of the trimming flame gun is formed by mixing acetylene and oxygen according to the volume ratio of 2:5, the pressure of the acetylene gun is 0.07MPa, the pressure of the oxygen gun is 0.4MPa, and the temperature of the flame (front part) sprayed by the trimming flame gun 3 is 2000 ℃.
(2) The glass plate 1 subjected to longitudinal trimming and polishing in the step (1) goes forward to a transverse trimming procedure, when the glass plate 1 enters a transverse trimming and polishing area, a control center transmits signals to enable a roller table with independent transmission to stop running, trimming and polishing unit components (a front group and a rear group) arranged above a roller table of an annealing kiln move towards the lower part of the annealing kiln, so that the central line of a V-shaped groove 2 of a polishing wheel coincides with the central line of the thickness of the glass plate 1, at the moment, the polishing wheel moves towards the direction close to glass again, so that the polishing wheel contacts with two transverse edges of the glass, then a transverse trimming and polishing device reciprocates along the transverse edges of the glass plate 1, and simultaneously controls the center to transmit signals, a trimming flame gun 3 is opened and aligned with the transverse edges of the glass plate to spray fire, the edges of the glass are heated and softened under the action of flame, and smooth and neat glass edges are formed under the extrusion action of the polishing wheel;
the transverse trimming and polishing device consists of 20 unit components in each row (front row and rear row respectively), the unit components are a polishing wheel and a trimming flame gun, the polishing wheel and the trimming flame gun are arranged in one-to-one correspondence, the polishing wheel is composed of a heat-resistant stainless steel wheel body and a high-temperature bearing, the trimming flame gun is composed of a flame gun body and a gas tube, and the trimming flame gun is made of heat-resistant stainless steel. The distance between adjacent unit components is 200mm, the reciprocating motion pitch is 250mm, the fuel 4 of the trimming flame gun is formed by mixing acetylene and oxygen according to the volume ratio of 2:5, the pressure of the acetylene gun is 0.07MPa, the pressure of the oxygen gun is 0.4MPa, and the temperature of flame (front part) sprayed by the trimming flame gun 3 is 2000 ℃.
The glass plate after the transverse trimming and polishing treatment continues to go forward and is turned to the next procedure, and the control center sends out a message to reset the transverse trimming and polishing device and wait for the next glass to be in place. The glass plate subjected to trimming and polishing treatment in the embodiment has the dimensions of 3659.5 multiplied by 2439.7mm, the diagonal deviation of 2.1mm, and the glass edge trimming is flat and smooth, neat and free of edge breakage, and completely meets the technical requirements of glass deep processing.
Example 3
On a 600t/d float production line, the original plate width is 4000mm, and the main line glass plate speed is 3-5 m/min when 12mm glass is produced. The plate surface size after the online cutting is 3660x2440mm, and trimming and polishing treatment is carried out on the plate surface.
The trimming and polishing process of the hot glass on a production line for manufacturing float glass, wherein the temperature of the high-temperature glass is 500-650 ℃, and the specific process is as follows:
(1) After the longitudinal edge breaking process of the annealing kiln B area of the flat glass float production line, the glass plate 1 enters a longitudinal trimming polishing area, when the glass plate runs to the area, an annealing kiln roller way with independent transmission is driven by a control center to run at a proper speed, and meanwhile, longitudinal trimming polishing unit parts arranged on two sides of the annealing kiln run towards the middle of the annealing kiln at the same time, so that the V-shaped groove 2 of the polishing wheel is contacted with the longitudinal edge part of glass, a flame gun is opened and aligned with the longitudinal edge of the glass to spray fire, and the edge part of the glass in running is heated and softened under the action of flame, and then a very smooth and neat glass edge is formed under the extrusion action of the V-shaped groove 2 of the polishing wheel. The glass plate 1 subjected to longitudinal trimming continues to run and turn to the next transverse trimming and polishing process;
the longitudinal trimming polishing device consists of 2X 8 polishing wheels and trimming flame 3 guns which are respectively arranged at two sides of the annealing kiln, the polishing wheels and the trimming flame guns 3 are controlled to run by a control center, the control center is respectively in communication connection with the polishing wheels and the trimming flame guns 3, and the polishing wheels and the trimming flame guns 3 are correspondingly arranged one by one. The polishing wheel consists of a heat-resistant stainless steel wheel body and a high-temperature bearing, the trimming flame gun consists of a flame gun body and a gas tube, and the trimming flame gun is made of heat-resistant stainless steel. The fuel 4 of the trimming flame gun is formed by mixing acetylene and oxygen according to the volume ratio of 2:5, the pressure of the acetylene gun is 0.07MPa, the pressure of the oxygen gun is 0.4MPa, and the temperature of the flame (front part) sprayed by the trimming flame gun 3 is 2000 ℃.
(2) The glass plate 1 subjected to longitudinal trimming and polishing in the step (1) goes forward to a transverse trimming procedure, when the glass plate 1 enters a transverse trimming and polishing area, a control center transmits signals to enable a roller table with independent transmission to stop running, trimming and polishing unit components (a front group and a rear group) arranged above a roller table of an annealing kiln move towards the lower part of the annealing kiln, so that the central line of a V-shaped groove 2 of a polishing wheel coincides with the central line of the thickness of the glass plate 1, at the moment, the polishing wheel moves towards the direction close to glass again, so that the polishing wheel contacts with two transverse edges of the glass, then a transverse trimming and polishing device reciprocates along the transverse edges of the glass plate 1, and simultaneously controls the center to transmit signals, a trimming flame gun 3 is opened and aligned with the transverse edges of the glass plate to spray fire, the edges of the glass are heated and softened under the action of flame, and smooth and neat glass edges are formed under the extrusion action of the polishing wheel;
the transverse trimming and polishing device consists of 20 unit components in each row (front row and rear row respectively), the unit components are a polishing wheel and a trimming flame gun, the polishing wheel and the trimming flame gun are arranged in one-to-one correspondence, the polishing wheel is composed of a heat-resistant stainless steel wheel body and a high-temperature bearing, the trimming flame gun is composed of a flame gun body and a gas tube, and the trimming flame gun is made of heat-resistant stainless steel. The distance between adjacent unit components is 200mm, the reciprocating motion pitch is 250mm, the fuel 4 of the trimming flame gun is formed by mixing acetylene and oxygen according to the volume ratio of 2:5, the pressure of the acetylene gun is 0.07MPa, the pressure of the oxygen gun is 0.4MPa, and the temperature of flame (front part) sprayed by the trimming flame gun 3 is 2000 ℃.
The glass plate after the transverse trimming and polishing treatment continues to go forward and is turned to the next procedure, and the control center sends out a message to reset the transverse trimming and polishing device and wait for the next glass to be in place. The glass plate subjected to the trimming and polishing treatment in the embodiment has the size of 3660 multiplied by 2440mm, the diagonal deviation of 2.4mm, and the trimming of the glass edge is flat and smooth, neat and free of edge breakage, and completely meets the technical requirements of glass deep processing.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. The trimming and polishing process of the thermal state glass on the production line for manufacturing the float glass is characterized in that a longitudinal trimming and polishing device and a transverse trimming and polishing device respectively carry out longitudinal trimming and polishing treatment and transverse trimming and polishing treatment on a high-temperature glass plate on the float glass production line, the longitudinal trimming and polishing device is arranged on two side edges in an annealing kiln, the transverse trimming and polishing device is arranged above a roller way of the annealing kiln, and the process specifically comprises the following steps:
(1) After the longitudinal edge breaking process of the annealing kiln B area of the flat glass float production line, the glass plate enters a longitudinal trimming and polishing area, when the glass plate moves to the area, an annealing kiln roller way with independent transmission slowly moves, longitudinal trimming and polishing devices arranged at two sides in the annealing kiln are close to the longitudinal edge of the glass plate, and a trimming wheel and the glass plate synchronously move, so that the trimming and polishing of the longitudinal edge of the glass plate are finished;
(2) The glass plate subjected to longitudinal edge trimming and polishing continuously moves forward on an annealing kiln roller way to enter a transverse trimming and polishing area, when the glass plate enters the area, the annealing kiln roller way is suspended, the transverse trimming and polishing device moves and abuts against the front transverse edge and the rear transverse edge of the glass plate, and the transverse trimming and polishing device performs transverse swing, so that the transverse trimming and polishing of the glass plate are completed; the temperature of the high-temperature glass is 500-650 ℃;
the longitudinal trimming and polishing device and the transverse trimming and polishing device have the same structure and consist of a plurality of trimming and polishing unit components and an executing mechanism, wherein the trimming and polishing unit components comprise polishing wheels and trimming flame guns, the polishing wheels and the trimming flame guns are arranged in one-to-one correspondence, and the executing mechanism is connected with the polishing wheels and the trimming flame guns;
the polishing wheel consists of a heat-resistant stainless steel wheel body and a high-temperature bearing, the trimming flame gun consists of a flame gun body and a gas tube, and the trimming flame gun is made of heat-resistant stainless steel;
the stainless steel wheel body is provided with a V-shaped groove in the middle, so that the edge of the glass plate can enter the V-shaped groove, and the stainless steel wheel body is symmetrically arranged with the V-shaped groove as the center.
2. The process for trimming and polishing hot glass on a float glass manufacturing line according to claim 1, wherein the actuating mechanism of the longitudinal trimming and polishing device consists of a first lifting adjusting mechanism and a first transverse moving mechanism, and the actuating mechanism of the transverse trimming and polishing device consists of a second lifting adjusting mechanism, a second transverse moving mechanism and a longitudinal moving mechanism.
3. The trimming and polishing process for hot glass on a float glass manufacturing line according to claim 1 or 2, wherein the longitudinal trimming and polishing devices are disposed on both sides of the annealing lehr at the rear of the longitudinal edge breaking zone of the annealing lehr B.
4. The process for trimming and polishing hot glass on a float glass manufacturing line according to claim 1 or 2, wherein the transverse trimming and polishing device is arranged behind the longitudinal trimming and polishing area of the annealing furnace B area, is positioned at the upper part of the roller way of the annealing furnace and is parallel to the roller way.
5. The process of claim 1, wherein the polishing wheel has a heat resistant temperature greater than 700 ℃ and the trimming flame gun has a heat resistant temperature greater than 700 ℃.
6. The process for trimming and polishing hot glass on a float glass production line according to claim 1, wherein the flame temperature of the trimming flame gun is 1500-3000 ℃, and the fuel of the trimming flame gun is a mixed gas of acetylene and oxygen.
7. A hot glass trimming and polishing process in a float glass manufacturing line according to claim 3, wherein 5 to 10 trimming and polishing unit parts are provided on each side.
8. The trimming and polishing process for hot glass on a manufacturing line for float glass according to claim 4, wherein front and rear sets of trimming and polishing unit parts are provided, each set having 20 trimming and polishing unit parts.
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| CN114409236A (en) | 2022-04-29 |
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