CN112553422B - Metal plate belt flame heating device and heating method thereof - Google Patents
Metal plate belt flame heating device and heating method thereof Download PDFInfo
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- CN112553422B CN112553422B CN202011559271.2A CN202011559271A CN112553422B CN 112553422 B CN112553422 B CN 112553422B CN 202011559271 A CN202011559271 A CN 202011559271A CN 112553422 B CN112553422 B CN 112553422B
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- flame
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- 239000002184 metal Substances 0.000 title claims abstract description 53
- 238000010438 heat treatment Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims description 10
- 230000007246 mechanism Effects 0.000 claims abstract description 38
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims description 26
- 239000007789 gas Substances 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 210000003437 trachea Anatomy 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005338 heat storage Methods 0.000 claims description 3
- 239000003345 natural gas Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 238000004146 energy storage Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/52—Methods of heating with flames
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Furnace Details (AREA)
Abstract
The invention relates to the technical field of metal plate strip processing, in particular to a metal plate strip flame heating device which comprises a shell, wherein an upper cover is in threaded connection with the upper end of the shell, an air pipe penetrating through the upper cover is installed on one side of the upper end of the upper cover, a rotating mechanism is arranged on the upper end of a fixing plate, a gear disc is horizontally fixed through the rotating mechanism, a plurality of flame ejector bodies penetrating through the shell are installed on the upper end of the other side of the outer portion of the shell, one end of each flame ejector body is connected with an air supply device through a communicating pipe, two clamping plates are fixed on two sides of the upper end of the fixing plate in parallel, and a metal plate strip is clamped and fixed among the clamping plates. The invention realizes the effect of uniform heating and the effect of energy storage under the state of stably clamping the metal plate strip, so that the stored energy can be utilized when the plate is heated.
Description
Technical Field
The invention relates to the technical field of metal plate strip processing, in particular to a metal plate strip flame heating device and a heating method thereof.
Background
After the metal plate strip is processed, heat treatment needs to be achieved, the best mode of the heat treatment is that flame is utilized to achieve heating of the plate, and flame heating devices in the existing market cannot achieve the effect of uniform heating of all positions of the plate, and meanwhile cannot achieve the effect of energy storage, so that energy consumption is large.
Disclosure of Invention
The invention aims to solve the defects that the uniform heating effect cannot be realized, the energy storage effect cannot be realized, and the energy consumption is high in the prior art, and provides a metal plate belt flame heating device and a heating method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a metal plate area flame heating device, includes the casing, the upper end threaded connection of casing has the upper cover, the trachea that runs through the upper cover is installed to upper end one side of upper cover, the inboard lower extreme horizontal welding of casing has the fixed plate, the lower extreme of fixed plate is provided with the mechanism of storing up temperature, the upper end of fixed plate is provided with slewing mechanism, and is fixed with the toothed disc through the slewing mechanism level, the toothed disc is provided with power unit with outside one side middle-end of casing, a plurality of flame sprayer bodies that run through the casing are installed to the outside opposite side upper end of casing, the one end of flame sprayer body all is connected with air feeder through communicating pipe, the equal parallel in upper end both sides of fixed plate is fixed with two splint, and is a plurality of the centre gripping is fixed with metal plate area between the splint.
Preferably, heat-preserving mechanism includes the gas leakage pipe of fixed mounting at the fixed plate middle part and installs the moving mechanism at the inboard lower extreme of casing, fixed mounting has the thermal-insulated board on the moving mechanism, the up end height of thermal-insulated board matches each other with the lower terminal surface height of leaking the trachea, the size of thermal-insulated board is greater than the lower terminal surface size of leaking the trachea, still be provided with two sets of stop gear between the lower extreme both sides of thermal-insulated board and the inboard bottom of casing, and the direction that two sets of stop gear's direction and thermal-insulated board removed is unanimous.
Preferably, moving mechanism includes the axle bed of fixed mounting in the inside lower extreme one side of casing and installs the sealed bearing at the inside lower extreme opposite side of casing, the outside of casing is rotated and is had the threaded rod that runs through sealed bearing, the one end of threaded rod extends to the inboard of axle bed, threaded connection has the threaded sleeve pipe still on the threaded rod, mutually support between threaded sleeve pipe and the threaded rod, threaded sleeve pipe's upper end and the lower extreme middle part interconnect of thermal-insulated board, the fixed welding of threaded rod one end in the casing outside has the commentaries on classics handle.
Preferably, stop gear includes the straight board of fixed mounting in casing lower extreme one side and sets up the square groove in insulation board lower extreme one side, the upper end of straight board is located the inboard in square groove, and the size of straight board matches each other with the size in square groove, the length of insulation board is greater than the distance between two straight boards.
Preferably, slewing mechanism includes the annular seat of fixed mounting in the fixed plate upper end outside and installs the annular plate in the toothed disc lower extreme outside, the ring channel has been seted up at the upper end middle part of fixed plate, the annular plate rotates and sets up in the ring channel, and ring channel and annular plate clearance fit.
Preferably, the power mechanism comprises a support plate fixedly mounted on one side of the outer portion of the shell and a bearing mounted in the middle of one side of the shell, a stepping motor is fixedly mounted at the upper end of the support plate through a screw, an output shaft of the stepping motor penetrates through the bearing and extends to the inner side of the shell, a main gear is vertically mounted at the tail end of the output shaft of the stepping motor on the inner side of the shell, and the main gear is meshed with the gear disc.
The invention also provides a heating method of the metal plate strip flame heating device, which comprises the following steps:
s1, fixing the metal plate strip: the upper cover is opened, an operator lifts the metal plate strip into the shell through lifting equipment, clamps the metal plate strip between the two groups of clamping plates, and simultaneously rotates the rotating handle to ensure that the upper end surface of the heat insulation plate is not contacted with the lower end surface of the air leakage pipe;
s2, connecting the upper cover to the upper end of the shell in a threaded manner, turning on a switching power supply of the stepping motor, and opening the flame ejector body and a valve of the natural gas supply device to realize heating;
and S3, after heating, turning off a switching power supply of the stepping motor, simultaneously rotating the rotating handle to enable the upper end face of the heat insulation plate to completely cover the air leakage pipe, and taking out the metal plate strip after cooling for a period of time.
Preferably, the metal plate strip is fixedly clamped between the clamping plates, and the center point of the lower end of the metal plate strip is ensured to be matched with the circle center of the upper end of the gear plate.
The metal plate belt flame heating device and the heating method thereof provided by the invention have the beneficial effects that: according to the heating method of the metal plate belt flame heating device, the effect of uniform heating is realized in the state that the metal plate belt is stably clamped, and meanwhile, the effect of energy storage can be achieved, so that when the plate is heated, the stored energy can be utilized.
Drawings
Fig. 1 is a schematic structural diagram of a metal plate strip flame heating device according to the present invention.
Fig. 2 is a schematic structural view of a section a-a of the metal plate strip flame heating apparatus of fig. 1.
Fig. 3 is an enlarged view of a portion B of the flame heating apparatus for sheet metal strip of fig. 1.
Fig. 4 is an enlarged view of a portion C of the sheet metal strip flame heating apparatus of fig. 1.
In the figure: the device comprises a shell 1, a bearing 2, a rotating mechanism 3, an annular plate 31, an annular groove 32, an annular seat 33, a limiting mechanism 4, a square groove 41, a straight plate 42, a stepping motor 5, a supporting plate 6, a shaft seat 7, a metal plate strip 8, a main gear 9, a clamping plate 10, a fixing plate 11, an air leakage pipe 12, an upper cover 13, a flame ejector body 14, a sealing bearing 15, a rotating handle 16, a threaded rod 17, a threaded sleeve 18, a heat insulation plate 19, a gear disc 20 and an air pipe 21.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
Referring to fig. 1-4, a metal plate flame heating device comprises a housing 1, wherein an upper cover 13 is in threaded connection with the upper end of the housing 1, an air pipe 21 penetrating through the upper cover 13 is installed on one side of the upper end of the upper cover 13, and the air pipe 21 can prevent the heat inside the housing 1 from increasing, so that the upper cover 13 is abraded due to the fact that the upper cover 13 is subjected to large lifting force.
The lower end of the inner side of the shell 1 is horizontally welded with a fixed plate 11, the lower end of the fixed plate 11 is provided with a heat storage mechanism, the heat storage mechanism comprises an air leakage pipe 12 fixedly arranged in the middle of the fixed plate 11 and a moving mechanism arranged at the lower end of the inner side of the shell 1, the moving mechanism comprises a shaft seat 7 fixedly arranged at one side of the lower end of the inner side of the shell 1 and a sealing bearing 15 arranged at the other side of the lower end of the inner side of the shell 1, a threaded rod 17 penetrating through the sealing bearing 15 is rotated at the outer side of the shell 1, one end of the threaded rod 17 extends to the inner side of the shaft seat 7, a threaded sleeve 18 is further connected onto the threaded rod 17 in a threaded manner, the threaded sleeve 18 is matched with the threaded rod 17, the upper end of the threaded sleeve 18 is mutually connected with the middle of the lower end of the heat insulation plate 19, one end of the threaded rod 17 at the outer side of the shell 1 is fixedly welded with a rotating handle 16, so that the threaded rod 17 can drive the heat insulation plate 19 to move in the horizontal direction, when the device is collecting the energy, rotate threaded rod 17 for threaded sleeve 18 drives thermal-insulated board 19 and removes, makes mutual contactless between thermal-insulated board 19 and the gas leakage pipe 12, discharges the heat into the lower extreme of fixed plate 11, when needs realize preserving the energy, adjusts thermal-insulated board 19's position, makes complete coincidence between thermal-insulated board 19 and the gas leakage pipe 12, thereby realizes the thermal preservation, when being convenient for once more to the panel heating, provides the heat of preheating.
The moving mechanism is fixedly provided with a heat insulation plate 19, the height of the upper end surface of the heat insulation plate 19 is matched with the height of the lower end surface of the air leakage pipe 12, the size of the heat insulation plate 19 is larger than that of the lower end surface of the air leakage pipe 12, two groups of limiting mechanisms 4 are arranged between the two sides of the lower end of the heat insulation plate 19 and the inner bottom of the shell 1, and the directions of the two groups of limiting mechanisms 4 are consistent with the moving direction of the heat insulation plate 19, the limiting mechanisms 4 comprise a straight plate 42 fixedly arranged on one side of the lower end of the shell 1 and a square groove 41 arranged on one side of the lower end of the heat insulation plate 19, the upper end of the straight plate 42 is positioned on the inner side of the square groove 41, and the size of straight board 42 matches each other with the size of square groove 41, and the length of thermal insulation board 19 is greater than the distance between two straight boards 42, mutually supports between straight board 42 and the square groove 41, can effectually realize prescribing a limit to the position of thermal insulation board 19, avoids thermal insulation board 19 to take place the circumstances of upset.
A plurality of flame sprayer bodies 14 that run through casing 1 are installed to casing 1's outside opposite side upper end, and flame sprayer body 14's one end all is connected with air feeder through communicating pipe, and the equal parallel in upper end both sides of fixed plate 11 is fixed with two splint 10, and the centre gripping is fixed with metal plate strip 8 between a plurality of splint 10, and this structure can realize quick fixed to metal plate strip 8.
The invention also provides a heating method of the metal plate strip flame heating device, which comprises the following steps:
s1, fixing the metal plate strip 8: the upper cover 13 is opened, an operator lifts the metal plate strip 8 into the shell 1 through lifting equipment, clamps the metal plate strip 8 between the two groups of clamping plates 10, simultaneously rotates the rotating handle 16, so that the upper end surface of the heat insulation plate 19 is not contacted with the lower end surface of the air leakage pipe 12, fixedly clamps the metal plate strip 8 between the clamping plates 10, and ensures that the center point of the lower end of the metal plate strip 8 is matched with the center of the upper end of the gear plate 20;
s2, connecting the upper cover 13 to the upper end of the shell 1 through screw threads, turning on a switching power supply of the stepping motor 5, and turning on the flame ejector body 14 and a valve of a natural gas supply device to realize heating;
and S3, after heating, turning off the switch power supply of the stepping motor 5, simultaneously rotating the rotating handle 16 to enable the upper end face of the heat insulation plate 19 to completely cover the air leakage pipe 12, and taking out the metal plate strip 8 after cooling for a period of time.
Example 2
Referring to fig. 1, as another preferred embodiment of the present invention, the difference from embodiment 1 is that a power mechanism is disposed at the middle end of the gear plate 20 and the outer side of the housing 1, the power mechanism includes a supporting plate 6 fixedly mounted at the outer side of the housing 1 and a bearing 2 mounted at the middle of one side of the housing 1, a stepping motor 5 is fixedly mounted at the upper end of the supporting plate 6 through a screw, an output shaft of the stepping motor 5 penetrates through the bearing 2 and extends to the inner side of the housing 1, a main gear 9 is vertically mounted at the end of the output shaft of the stepping motor 5 at the inner side of the housing 1, the main gear 9 and the gear plate 20 are engaged with each other, the stepping motor 5 is provided with a lead wire connected with a power supply device, and an external control switch is mounted on the lead wire, the stepping motor 5 drives the main gear 9 to rotate, and the main gear 9 and the gear plate 20 are engaged with each other, so that the gear plate 20 rotates in the horizontal direction, the metal plate belt 8 is driven to rotate, and the heating uniformity of the metal plate belt 8 is effectively improved.
The upper end of fixed plate 11 is provided with slewing mechanism 3, and be fixed with toothed disc 20 through 3 levels of slewing mechanism, slewing mechanism 3 includes annular seat 33 of fixed mounting in the 11 upper ends outside of fixed plate and installs the annular plate 31 in the 20 lower extreme outsides of toothed disc, annular groove 32 has been seted up at the upper end middle part of fixed plate 11, annular plate 31 rotates and sets up in annular groove 32, and annular groove 32 and annular plate 31 clearance fit, mutually support between annular groove 32 and the annular plate 31, can realize injecing the position of toothed disc 20, more stable when toothed disc 20 rotates simultaneously.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (8)
1. The utility model provides a metal plate area flame heating device, includes casing (1), the upper end threaded connection of casing (1) has upper cover (13), trachea (21) that run through upper cover (13) are installed to upper end one side of upper cover (13), its characterized in that, the inboard lower extreme horizontal welding of casing (1) has fixed plate (11), the lower extreme of fixed plate (11) is provided with the mechanism that stores up temperature, the upper end of fixed plate (11) is provided with slewing mechanism (3), and is fixed with toothed disc (20) through slewing mechanism (3) level, the outer one side middle-end of toothed disc (20) and casing (1) is provided with power unit, a plurality of flame sprayer bodies (14) that run through casing (1) are installed to the outside opposite side upper end of casing (1), the one end of flame sprayer body (14) all is connected with air feeder through communicating pipe, two clamping plates (10) are fixed on two sides of the upper end of the fixing plate (11) in parallel, and a plurality of metal plate strips (8) are fixed between the clamping plates (10) in a clamping mode.
2. A metal plate flame heating device according to claim 1, wherein the heat storage mechanism comprises a gas leakage pipe (12) fixedly installed in the middle of the fixing plate (11) and a moving mechanism installed at the lower end of the inner side of the housing (1), a heat insulation plate (19) is fixedly installed on the moving mechanism, the height of the upper end face of the heat insulation plate (19) is matched with the height of the lower end face of the gas leakage pipe (12), the size of the heat insulation plate (19) is larger than that of the lower end face of the gas leakage pipe (12), two sets of limiting mechanisms (4) are further arranged between the two sides of the lower end of the heat insulation plate (19) and the bottom of the inner side of the housing (1), and the directions of the two sets of limiting mechanisms (4) are consistent with the moving direction of the heat insulation plate (19).
3. A metal plate and strip flame heating device according to claim 2, wherein the moving mechanism comprises a shaft seat (7) fixedly installed on one side of the inner lower end of the shell (1) and a sealing bearing (15) installed on the other side of the inner lower end of the shell (1), a threaded rod (17) penetrating through the sealing bearing (15) is rotatably installed on the outer side of the shell (1), one end of the threaded rod (17) extends to the inner side of the shaft seat (7), a threaded sleeve (18) is further connected onto the threaded rod (17) in a threaded manner, the threaded sleeve (18) and the threaded rod (17) are matched with each other, the upper end of the threaded sleeve (18) is connected with the middle of the lower end of the heat insulation plate (19) in a threaded manner, and a rotating handle (16) is fixedly welded at one end of the threaded rod (17) on the outer side of the shell (1).
4. A metal plate flame heating device according to claim 2, wherein the limiting mechanism (4) comprises a straight plate (42) fixedly installed on one side of the lower end of the shell (1) and a square groove (41) formed on one side of the lower end of the heat insulating plate (19), the upper end of the straight plate (42) is located on the inner side of the square groove (41), the size of the straight plate (42) is matched with that of the square groove (41), and the length of the heat insulating plate (19) is greater than the distance between the two straight plates (42).
5. A metal plate and strip flame heating device as claimed in claim 1, wherein the rotating mechanism (3) comprises an annular seat (33) fixedly mounted on the outer side of the upper end of the fixing plate (11) and an annular plate (31) mounted on the outer side of the lower end of the gear plate (20), an annular groove (32) is formed in the middle of the upper end of the fixing plate (11), the annular plate (31) is rotatably arranged in the annular groove (32), and the annular groove (32) is in clearance fit with the annular plate (31).
6. A metal plate and strip flame heating device as claimed in claim 1, wherein the power mechanism comprises a support plate (6) fixedly installed at one side of the outer part of the housing (1) and a bearing (2) installed at the middle part of one side of the housing (1), a stepping motor (5) is fixedly installed at the upper end of the support plate (6) through a screw, an output shaft of the stepping motor (5) penetrates through the bearing (2) and extends to the inner side of the housing (1), a main gear (9) is vertically installed at the tail end of the output shaft of the stepping motor (5) at the inner side of the housing (1), and the main gear (9) and the gear plate (20) are meshed with each other.
7. A heating method of a metal strip flame heating apparatus according to claims 1-6, comprising the steps of:
s1, fixing the metal plate strip (8): the upper cover (13) is opened, an operator lifts the metal plate strip (8) into the shell (1) through lifting equipment, clamps the metal plate strip (8) between the two groups of clamping plates (10), and simultaneously rotates the rotating handle (16) to ensure that the upper end surface of the heat insulation plate (19) is not contacted with the lower end surface of the air leakage pipe (12);
s2, connecting the upper cover (13) to the upper end of the shell (1) through screw threads, turning on a switching power supply of the stepping motor (5), and turning on the flame ejector body (14) and a valve of a natural gas supply device to realize heating;
and S3, after heating, turning off a switching power supply of the stepping motor (5), simultaneously rotating the rotating handle (16) to enable the upper end face of the heat insulation plate (19) to completely cover the air leakage pipe (12), and taking out the metal plate strip (8) after cooling for a period of time.
8. A method as claimed in claim 7, wherein the metal strip (8) is held between the clamping plates (10) such that the centre of the lower end of the metal strip (8) is coincident with the centre of the upper end of the toothed disc (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011559271.2A CN112553422B (en) | 2020-12-25 | 2020-12-25 | Metal plate belt flame heating device and heating method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011559271.2A CN112553422B (en) | 2020-12-25 | 2020-12-25 | Metal plate belt flame heating device and heating method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112553422A CN112553422A (en) | 2021-03-26 |
| CN112553422B true CN112553422B (en) | 2022-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011559271.2A Active CN112553422B (en) | 2020-12-25 | 2020-12-25 | Metal plate belt flame heating device and heating method thereof |
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| CN (1) | CN112553422B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3726659A (en) * | 1970-10-02 | 1973-04-10 | Owens Illinois Inc | Method and apparatus for forming a finish on a glass container |
| CN100557751C (en) * | 2007-12-26 | 2009-11-04 | 周维耀 | Spiral lamp overhead seals grip device and sealing process thereof |
| CN103213831B (en) * | 2013-04-25 | 2015-01-28 | 陕西工业职业技术学院 | Automatic conveying device for flame height adjusting of lighter |
| CN107159987B (en) * | 2017-06-20 | 2019-12-06 | 合肥太通制冷科技有限公司 | Flame heating and welding equipment |
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| CN112553422A (en) | 2021-03-26 |
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Denomination of invention: A metal plate strip flame heating device and its heating method Granted publication date: 20220624 Pledgee: Wenzhou Oujiangkou Industrial Development Group Co.,Ltd. Pledgor: OUKUN TECHNOLOGY WENZHOU Co.,Ltd. Registration number: Y2024980031072 |
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