CN112317591B - Molten state multi-point pot bottom attaching process and production device thereof - Google Patents
Molten state multi-point pot bottom attaching process and production device thereof Download PDFInfo
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- CN112317591B CN112317591B CN202011105643.4A CN202011105643A CN112317591B CN 112317591 B CN112317591 B CN 112317591B CN 202011105643 A CN202011105643 A CN 202011105643A CN 112317591 B CN112317591 B CN 112317591B
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- pot body
- clamp
- laminating
- pot
- heating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
- B21D39/026—Reinforcing the connection by locally deforming
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/18—Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like
- B21D51/22—Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like pots, e.g. for cooking
Abstract
The invention provides a molten state multi-point pot bottom attaching process, which comprises the following processing steps: 1. drawing a steel sheet metal to form a pot body; 2. clamping the formed pot body with an upward opening from the upper part and sending the pot body into a laminating oven; 3. in the laminating oven, the pan body is clamped from the middle lower position through the heating cover to form a heating cavity with an open lower part; 4. heating the surface of the lower part of the pot body to 1400-1600 ℃ by high-temperature heating in the heating cavity in the previous step, enabling the lower part of the pot body to form a molten state, introducing nitrogen into the upper part of the pot body, enabling the upper part of the pot body to keep a solid state, stopping heating, putting an aluminum plate with convex points on the upper part into the lower part of the pot body, and then pressing the aluminum plate upwards by a mould to be attached to the bottom of the pot body; 5. the pot body is cooled and taken out of the shell. By using the process, the iron layer and the aluminum layer at the bottom of the pot body are completely fused, and the fusion area and the depth of the two materials are greatly higher than those of the traditional processing mode.
Description
Technical Field
The invention relates to the technical field of pot processing, in particular to a molten state multi-point pot bottom attaching process and a production device thereof.
Background
The pan is used for cooking food usually, consequently uses iron or stainless steel material's as the inlayer more in order to use safety, in order to guarantee the heat conductivity of the pot body simultaneously, need wrap up the aluminium lamination in the inside parcel of pot body for the holistic heat conductivility of pot body is good. Traditional processing technology is usually direct to adhere to the laminating with the aluminium lamination in pot body bottom, uses the lamella material to laminate during the laminating, makes the laminating area less between the inside steel layer of pot body and the aluminium system layer like this, produces the separation interlayer phenomenon easily, causes the heat conductivility of the pot body to worsen. In traditional iron-steel layer and aluminium system layer laminating technology, need heat the laminating position simultaneously, but because the melting point difference of steel melting point and aluminium is great, it is more difficult to control the temperature for the laminating process is more difficult. In addition, in the processing process of the pot, the pot body is usually manufactured by adopting a stretching process, so that the pot body has stress, and the stress is easy to damage the bottom of the pot body.
Disclosure of Invention
Aiming at the problems, the invention provides a molten state multi-point type pot bottom attaching process which only heats a steel layer of a pot body and then enables the steel layer and an aluminum layer to be attached better in a heat conduction mode.
The technical scheme adopted by the invention for solving the technical problem is as follows: a molten state multi-point pot bottom attaching process comprises the following processing steps:
1. drawing a steel sheet metal to form a pot body;
2. clamping the formed pot body with an upward opening from the upper part and sending the pot body into a laminating oven;
3. in the laminating oven, the pan body is clamped from the middle lower position through the heating cover to form a heating cavity with an open lower part;
4. heating the surface of the lower part of the pot body to 1400-1600 ℃ by high-temperature heating in the heating cavity in the previous step to enable the lower part of the pot body to form a molten state, introducing nitrogen into the upper part of the pot body to enable the upper part of the pot body to be kept in a solid state, stopping heating, putting an aluminum plate with salient points on the upper part into the lower part of the pot body, and then pressing the aluminum plate upwards to be attached to the bottom of the pot body through a mold;
5. the pot body is cooled and taken out of the shell.
Preferably, the steel plate inside the pot body is made of stainless steel materials.
Preferably, the heating mode used in the fourth step is flame heating, and the heating time of the lower part of the pot body in the fourth step is less than 60 seconds.
Preferably, the time from the heating stop in the fourth step to the jointing of the aluminum plate and the bottom of the pot body is less than 30 seconds.
The bonding oven for the molten state multi-point pot bottom bonding process in the third step comprises a shell, wherein a horizontal cavity is designed in the shell, a horizontal clamp is assembled in the shell and clamps the upper part of a pot body, the clamp is assembled on a motion line which controls the clamp to move two stations from left to right in the shell, when the pot body is at the first station, an annular heating cover is assembled at the lower part of the pot body, a horizontally placed flame thrower is fixedly assembled at the middle position of the lower part of the heating cover, a lifting module capable of controlling the heating cover and the flame thrower to move up and down is assembled at the lower parts of the heating cover and the flame thrower, when the heating cover and the flame thrower are lifted to the upper position by the lifting module, the annular inner edge of the heating cover is tightly attached to the lower position of the side edge of the pot body, the heating cover and the pot bottom form a heating cavity with a downward opening, and upward flames are sprayed on the flame thrower to heat the pot bottom to a molten state; a downward gas injection pipe is arranged right above the pot body, the upper part of the gas injection pipe is provided with a lifting module capable of controlling the gas injection pipe to move up and down, when the lifting module controls the gas injection pipe to move to the lower part, the gas injection pipe extends into the pot body and is opposite to the bottom of the pot, and the gas injection pipe injects nitrogen; the pot body moves to during the inside second station of casing, the lower part design of the pot body has the open mould in upper portion, circular shape aluminum plate has been placed to the level in the mould, aluminum plate upper portion design has the bump more than three, mould lower part design has the lift module of control mould up-and-down motion, at the second station the upper portion of the pot body is equipped with the horizontally clamp plate, clamp plate upper portion design has control the lift module of clamp plate up-and-down motion, when the clamp plate was carried the lower part position by lift module, it is right the pot body upwards carries on spacingly, the mould is controlled the upward movement by lift module for aluminum plate is attached bottom of a boiler lower part. The fire disk of pot body lower part through first station heats to the molten state, at this moment aluminum plate salient point is with pot body lower part roof pressure deformation during the aluminum plate laminating for aluminum plate is attached in pot body lower part, and aluminum plate heat absorption arrives the melting point and carries out further fusion with pot body lower part simultaneously, and at this moment the pot body is because aluminum plate heat absorption, makes pot body bottom cooling solidification, makes two kinds of metal to fuse.
Preferably, the lifting module is a cylinder.
As preferred, the anterior design of laminating oven has the pay-off line, be equipped with between pay-off line and the laminating oven the motion line, the motion line drives clamp cyclic motion, when clamp moves on the pay-off line, have two stations of feeding and ejection of compact, clamp design has the structure that can open and shut and press from both sides tightly, the pot body transports through the pay-off line after step one stretch forming the feeding station, clamp will the pot body press from both sides tightly send into the laminating oven in the casing, after pot body laminating aluminum plate, the ejection of compact station of pay-off line is sent into in the pot body follow casing to the motion line, transports through the pay-off line.
Preferably, the front ends of the clamps are two semicircular rings which are opened and closed left and right, the inner sides of the clamps are provided with elastic layers, and the clamps elastically clamp the pot body through the elastic layers.
The invention has the beneficial effects that: this molten state multipoint mode bottom of a boiler laminating technology mainly is used for carrying out aluminum plate combined machining to the cylindrical pot body bottom of cooking, this technology is processed into molten state with pot body bottom, then laminate aluminum plate's salient point face, at this moment aluminum plate's bump can make pot body bottom produce sunkenly with pot body bottom extrusion deformation, then aluminum plate absorbs heat at the laminating in-process, because the melting temperature of aluminum product is less than steel class material far away, at this moment, the aluminum product surface can absorb heat and become molten state, fuse with the original molten state's of pot body bottom iron and steel material, the iron and steel material of the original pot body begins to solidify simultaneously, along with thermal dissipation, the iron and steel layer and the aluminium lamination of pot body bottom are completely intermingled, because the design of original bump structure, make the fuse area and the degree of depth of the two materials be greatly higher than traditional processing mode, make pot body bottom intermingle the state better. Therefore, the heat conducting performance is better, the bottom of the pot body is firmer and not easy to damage, and the service life of the pot body is longer. Partial heat can be taken away by introducing nitrogen before the pot body is attached, so that the bottom edge in the pot body can not be melted, and the shape of the pot bottom is ensured. Meanwhile, the bonding processing technology can effectively remove the stress of the pot bottom through high-temperature heating, and prevent the pot body from deforming in the subsequent heating.
Drawings
FIG. 1 is a schematic structural view of a forward cross section of a bonding oven for a molten-state multi-point pan bottom bonding process.
FIG. 2 is a schematic top view of a bonding oven for a molten-state multi-point pan bottom bonding process.
FIG. 3 is a schematic sectional view of the pan body before being attached to an aluminum plate.
Detailed Description
The invention is further illustrated by the following examples:
in the embodiment shown in fig. 1, 2 and 3, the molten multi-point pot bottom attaching process comprises the following processing steps:
1. drawing a steel sheet metal to form a pot body; in the embodiment, food-grade stainless steel is used as a main raw material of the pot body 1, and a traditional stretching process is adopted for processing and forming;
2. clamping the formed pot body 1 with an upward opening from the upper part and sending the pot body into a laminating oven; the bonding oven is mainly used for heating and bonding the aluminum plate 2 and the bottom of the pot body 1;
3. in the laminating oven, the pan body is clamped from the middle lower position through the heating cover 31,
a heating cavity with an open lower part is formed;
4. heating the surface of the lower part of the pot body to 1400-1600 ℃ by high temperature heating in the heating cavity in the previous step, wherein the temperature can cover the melting points of a plurality of steel metals to ensure that the lower part of the pot body 1 forms a molten state, introducing nitrogen into the upper part of the pot body 1 to ensure that the upper part of the pot body 1 keeps a solid state, stopping heating, putting an aluminum plate with salient points 21 on the upper part into the lower part of the pot body 1,
then the aluminum plate 2 is pressed upwards to be attached to the bottom of the pot body 1 through a mould 21;
5. the pot body is cooled and taken out of the shell.
This molten state multipoint mode bottom of a boiler laminating technology mainly is used for carrying out aluminum plate combined machining to the cylindrical pot body bottom of cooking, this technology is processed into molten state with pot body 1 bottom, then laminate through 21 faces of bump with aluminum plate 2, at this moment aluminum plate 2's bump 21 can make pot body 1 bottom produce sunken with pot body 1 bottom extrusion deformation, then aluminum plate 2 absorbs heat at the laminating in-process, because the melting temperature of aluminum product is less than steel class material far away, at this moment the aluminum product surface can absorb heat and become molten state, fuse with the original molten state's of pot body 1 bottom steel material, the original pot body 1's steel material begins to solidify simultaneously, along with thermal dissipation, the steel iron layer and the aluminium lamination of pot body bottom are completely melded, because the design of original bump 21 structures, make the fusion area and the degree of depth of the two materials be higher than traditional processing mode greatly, make pot body bottom melten state better. Partial heat can be taken away by introducing nitrogen before the pot body 1 is attached, so that the bottom edge in the pot body 1 cannot be melted, and the shape of the pot bottom is ensured. Meanwhile, the bonding processing technology can effectively remove the stress of the pan bottom through high-temperature heating, and prevent the pan body 1 from deforming in the subsequent heating.
When the method is specifically implemented, the heating mode used in the fourth step is flame heating, the flame heating mode is simple, the cost is lower, high-temperature heating is easy, the control is convenient, and the safety is better. In the fourth step, the heating time of the lower part of the pot body 1 is less than 60 seconds. In the fourth step, the rapid heating is adopted, so that the energy is saved more, and the integral temperature rise and deformation of the pot body can be avoided. And in the fourth step, the time for attaching the aluminum plate and the bottom of the pot body is less than 30 seconds after the heating is stopped. The quick attachment helps the pot body 1 to quickly reduce the temperature, prevents the heat accumulated at the bottom of the pot body 1 from diffusing to the whole pot body, has better attachment effect and can also effectively prevent the pot body from deforming during processing.
As shown in fig. 1 and 2, the main bonding process of the molten multi-point pot bottom bonding process is completed by a bonding oven, the bonding oven includes a housing 3, a horizontal cavity is designed in the housing 3, a horizontal clamp 41 is assembled in the housing 3, the clamp 41 clamps the upper part of the pot 1, the clamp 41 is assembled on a movement line 4, the movement line 4 controls the clamp 41 to move two stations from left to right in the housing 3, when the pot 1 is at a first station, the lower part of the pot 1 is assembled with an annular heating cover 31, the middle position of the lower part of the heating cover 31 is fixedly assembled with a horizontally placed flame disk 32, and the lower parts of the heating cover 31 and the flame disk 32 are assembled with a lifting module capable of controlling the up-and-down movement of the heating cover 31 and the flame disk 32. In this embodiment, the heating mantle 31 and the flame tray 32 are integrally connected, which facilitates overall control. When heating mantle 31 and fire disc 32 are risen to the upper portion position by lift module, the interior border of annular of heating mantle 31 pastes tightly the position is leaned on to the side of the pot body 1, heating mantle 31 and the bottom of a boiler form the chamber of heating of downwardly opening, spray ascending flame on the fire disc 32 and heat the bottom of a boiler. Should heat chamber upper portion and seal, like this when the flame dish is right 1 bottom of the pot body heats, the heat is gathered easily, and the processing effect is better, can be quick with the bottom of a boiler heating to molten condition. A downward gas injection pipe 33 is arranged right above the pot body 1, a lifting module capable of controlling the gas injection pipe 33 to move up and down is assembled on the upper portion of the gas injection pipe 33, and the gas injection pipe 33 is controlled by the lifting module to move to the lower portion position. When the fire spraying plate 32 heats the bottom of the pot body 1 at the lower part, the gas spraying pipe 33 extends into the pot body 1 and directly faces the bottom of the pot, and the gas spraying pipe 33 sprays nitrogen. Thus, when the lower part of the pot body 1 is melted, the pot body in the pot body 1 still keeps a solid state, and the lower part is convenient to process.
With pot body bottom when first station heating becomes molten state, pass through fast the clamp 41 of motion line 4 will the pot body 33 moves to the inside second station of casing 1, at this moment the lower part design of the pot body 1 has the open mould 34 in upper portion, circular shape aluminum plate 2 has been placed to the level in the mould 34, the design of aluminum plate 2 upper portion has bump 21 more than three, 4 lower part designs of mould have the lift module of control mould 34 up-and-down motion, at the second station the upper portion of the pot body 1 is equipped with horizontally clamp plate 35, clamp plate 35 upper portion design has the control the lift module of clamp plate up-and-down motion, when clamp plate 35 is carried the lower part position by lift module, it is right the pot body 1 upwards carries on spacingly, mould 34 is by lift module control upward movement for aluminum plate 2 is attached bottom of the pot lower part. At this moment 1 lower part of the pot body still keeps heating to the molten state through the flame disk 32 of first station, at this moment 2 aluminium plate salient points 21 are out of shape with 1 lower part roof pressure of the pot body during the laminating of aluminium plate 2 for aluminium plate 2 is attached in 1 lower part of the pot body, and aluminium plate 2 absorbs heat simultaneously and arrives the fusing point and further fuses with 1 lower part of the pot body, and at this moment 1 of the pot body is because aluminium plate absorbs heat, makes 1 bottom of the pot body cooling solidification, makes two kinds of metals blend.
In a specific design, as shown in fig. 1 and 2, the lifting module is a cylinder. The design of the front portion of laminating oven has a material conveying line 5, be equipped with between material conveying line 5 and the laminating oven 4 the motion line, motion line 4 drives 41 cyclic motion of clamp, when clamp 41 moves on material conveying line 5, have two stations of feeding 51 and ejection of compact 52, clamp 41 designs has the structure that can open and shut and press from both sides tightly, the pot body 1 transports through material conveying line 5 after step one stretch forming feeding 51 stations, clamp 41 clamp the pot body 1 and press from both sides tightly and send into in the casing 3 of laminating oven, and after 1 laminating aluminum plate 2 of the pot body, the motion line 4 transports the ejection of compact 52 stations of material conveying line 5 in the casing 3 with the pot body 1, transports through material conveying line 5. The design enables the clamp on the motion line 4 to do continuous cyclic motion, in the whole processing process, the feeding line 5 is fed into the bonding oven through the clamp 41 at the feeding position 51 to form the just stretched pan body 1, and after the bonding of the pan bottom and the aluminum plate 2 is completed in the bonding oven, the clamp 41 of the motion line 4 is used for feeding the pan body bonded with the aluminum plate 2 back to the discharging position 52 of the feeding line 5 again from the bonding oven. The production line layout has no return motion, is more energy-saving, and simultaneously greatly improves the production efficiency of the whole production line.
In the specific design, as shown in fig. 1, the front end of the clamp 41 is two semicircular rings which open and close left and right, the inner side of the clamp is equipped with an elastic layer 42, and the clamp 41 elastically clamps the pan body 1 through the elastic layer 42.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, but rather as the subject matter of the invention is to be construed in all aspects and as broadly as possible, and all changes, equivalents and modifications that fall within the true spirit and scope of the invention are therefore intended to be embraced therein.
Claims (4)
1. A laminating oven for a molten state multi-point pan bottom laminating process, the laminating oven comprising a housing, characterized in that: a horizontal cavity is designed in the shell, a horizontal clamp is assembled in the shell and clamps the upper part of the pot body, the clamp is assembled on a motion line, the motion line controls the clamp to move two stations in the shell from left to right, when the pot body is at the first station, an annular heating cover is assembled at the lower part of the pot body, a horizontally placed fire-spraying plate is fixedly assembled at the middle position of the lower part of the heating cover, a lifting module for controlling the heating cover and the fire-spraying plate to move up and down is assembled at the lower parts of the heating cover and the fire-spraying plate, when the heating cover and the fire-spraying plate are lifted to the upper positions by the lifting module, the annular inner edge of the heating cover is tightly attached to the lower position of the side edge of the pot body, a heating cavity with a downward opening is formed by the heating cover and the pot bottom, upward flames are sprayed on the fire-spraying plate to heat the pot bottom to a molten state; a downward gas injection pipe is arranged right above the pot body, the upper part of the gas injection pipe is provided with a lifting module for controlling the gas injection pipe to move up and down, when the lifting module controls the gas injection pipe to move to the lower part, the gas injection pipe extends into the pot body and is right opposite to the bottom of the pot, and the gas injection pipe injects nitrogen; the pot body moves to during the inside second station of casing, the lower part design of the pot body has the open mould in upper portion, circular shape aluminum plate has been placed to the level in the mould, aluminum plate upper portion design has the bump more than three, mould lower part design has the lift module of control mould up-and-down motion, at the second station the upper portion of the pot body is equipped with the horizontally clamp plate, clamp plate upper portion design has control the lift module of clamp plate up-and-down motion, when the clamp plate was carried the lower part position by lift module, it is right the pot body upwards carries on spacingly, the mould is controlled the upward movement by lift module for aluminum plate is attached bottom of a boiler lower part.
2. The laminating oven of claim 1, for a molten state multi-point pan bottom laminating process, characterized in that: the lifting module is a cylinder.
3. The laminating oven of claim 1, for a molten state multi-point pan bottom laminating process, characterized in that: the anterior design of laminating oven has the pay-off line, be equipped with between pay-off line and the laminating oven the motion line, the motion line drives clamp cyclic motion, when clamp moves on the pay-off line, have two stations of feeding and ejection of compact, clamp design has the structure that opens and shuts and press from both sides tightly, the pot body transports through the pay-off line after stretch forming the feeding station, clamp will the pot body press from both sides tightly send into the laminating oven in the casing, after pot body laminating aluminum plate, the ejection of compact station of pay-off line is sent into in the pot body follow casing to the motion line, transports out through the pay-off line.
4. The laminating oven for a molten state multi-point pan bottom laminating process of claim 3, wherein: the front end of the clamp is provided with two semicircular rings which are opened and closed left and right, the inner side of the clamp is provided with an elastic layer, and the clamp elastically clamps the pot body through the elastic layer.
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| CN202011105643.4A CN112317591B (en) | 2020-10-15 | 2020-10-15 | Molten state multi-point pot bottom attaching process and production device thereof |
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| CN202011105643.4A CN112317591B (en) | 2020-10-15 | 2020-10-15 | Molten state multi-point pot bottom attaching process and production device thereof |
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| CN112317591B true CN112317591B (en) | 2023-02-17 |
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| CN112317591A (en) | 2021-02-05 |
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