CN112122437B - Intelligent stretching treatment method for heat-insulating container - Google Patents
Intelligent stretching treatment method for heat-insulating container Download PDFInfo
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- CN112122437B CN112122437B CN202010779161.0A CN202010779161A CN112122437B CN 112122437 B CN112122437 B CN 112122437B CN 202010779161 A CN202010779161 A CN 202010779161A CN 112122437 B CN112122437 B CN 112122437B
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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
- B21D22/201—Work-pieces; preparation of the work-pieces, e.g. lubricating, coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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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
- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/12—Chemical modification
- C08J7/16—Chemical modification with polymerisable compounds
- C08J7/18—Chemical modification with polymerisable compounds using wave energy or particle radiation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/16—Halogen-containing compounds
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Abstract
The invention relates to the technical field of manufacturing of heat-insulating containers, in particular to an intelligent stretching processing method for a heat-insulating container, which is used for stretching stainless steel into an inner container of the heat-insulating container, using an image acquisition device to acquire images of stainless steel sheets to be stretched, transmitting the acquired image information to a central processing unit, judging the stainless steel sheets by an image processing unit in the central processing unit according to the image information acquired by the image acquisition device, clamping and spraying stretching oil on the qualified stainless steel sheets by a mechanical arm, then carrying out automatic stretching processing, taking out finished products by the mechanical arm after the stretching is finished, placing the finished products on a conveyor belt, and entering the next processing procedure. According to the intelligent stretching treatment method for the heat-insulating container, disclosed by the invention, intelligent automatic stretching is adopted, less manual operation is required, products are not overstocked among the working procedures, the surface scratches, abrasion and wire drawing of stainless steel caused by turnover among the working procedures can be effectively reduced, and a good foundation is provided for the subsequent electrolysis process.
Description
Technical Field
The invention relates to the technical field of heat-insulating container manufacturing, in particular to an intelligent stretching treatment method for a heat-insulating container.
Background
Stainless steel heat preservation container inner bag is at the in-process of production, adopt stretch forming's mode mostly, but because stainless steel hardness is high, the cold work hardening effect is showing, it is poor often to cause the cup to have thickness homogeneity if stretch forming once, the surface crack is many, shaping rate and qualification rate all low shortcoming, consequently adopt stretch forming's mode many times in prior art mostly, but stretch forming process steps are many times, every step all needs manual operation, and need artifical the transportation, not only need a large amount of manpower resources, and still probably cause stainless steel surface fish tail at the in-process of transporting, wearing and tearing, influence the effect of product.
Disclosure of Invention
In view of the above, the present invention aims to provide an intelligent stretching processing method for an insulation container, which adopts intelligent automatic stretching, needs less manual operations, has no product overstock between processes, can effectively reduce stainless steel surface scratches, abrasion and wire drawing caused by turnover between processes, and provides a good foundation for subsequent electrolysis procedures.
The invention solves the technical problems by the following technical means:
an intelligent stretching treatment method for a heat-preservation container is used for stretching stainless steel into an inner container of the heat-preservation container, and comprises the following steps:
1) The method comprises the steps that an image acquisition device is used for acquiring images of a stainless steel sheet needing to be stretched, ultrasonic waves are used for detecting the thickness of the stainless steel sheet, the acquired image information and the thickness information are transmitted to a central processing unit, an image processing unit in the central processing unit judges whether the size and the thickness of the stainless steel sheet meet requirements or not and whether impurities exist on the surface of the stainless steel sheet or not according to the image information acquired by the image acquisition device, and when the size and the thickness of the stainless steel sheet meet the requirements and the surface is clean and free of impurities, the stainless steel sheet is judged to be qualified;
2) The central processing unit controls the manipulator to clamp qualified stainless steel sheets to pass through the stretching oil nozzle, the stretching oil nozzle detects the stainless steel sheets to pass through the stretching oil nozzle through the sensor, and the central processing unit controls the stretching oil nozzle to spray stretching oil;
3) Placing the stainless steel sheet sprayed with the drawing oil in an automatic drawing unit for drawing, wherein the automatic drawing unit comprises six groups of automatic drawing machines, all fixedly mounting mechanical arms between two adjacent groups of automatic drawing machines, taking out the finished product through the mechanical arms after drawing is completed, placing the finished product on a conveyor belt, and entering the next processing procedure.
According to the stretching method of the heat preservation container, intelligent automatic stretching is adopted, the image acquisition device, the central processing unit, the mechanical arm and the like replace the existing manual operation, the manual work is liberated from the low-added-value work, and the repetitive strain is reduced; the stretching treatment method has compact process operation, each device is controlled by the central processing unit, the operation beats are consistent, products have no overstock between working procedures, the stainless steel surface scratch, abrasion and wire drawing caused by turnover between the working procedures can be effectively reduced, and a good foundation is provided for the subsequent electrolysis procedure.
Further, the stainless steel sheet is stretched for six times in an automatic stretching unit, and the method specifically comprises the following steps:
the first stretching time is 5s, the stretching pressure is 10-12MPa, the temperature of a heating ring of a stretching machine is 90-100 ℃, and a cylindrical semi-finished product I is obtained by stretching;
the second stretching time is 5.5s, the stretching pressure is 10-12MPa, the temperature of a heating ring of a stretching machine is 85-90 ℃, and a cylindrical semi-finished product II is obtained by stretching;
the third stretching time is 6s, the stretching pressure is 9-10MPa, the temperature of a heating ring of a stretching machine is 85-90 ℃, and a cylindrical semi-finished product III is obtained by stretching;
the fourth stretching time is 5s, the stretching pressure is 9-10MPa, the temperature of a heating ring of a stretching machine is 70-85 ℃, and a cylindrical semi-finished product IV is obtained by stretching;
the fifth stretching time is 6s, the stretching pressure is 7-9MPa, the temperature of a heating ring of a stretching machine is 70-85 ℃, and the cylindrical semi-finished product V is obtained by stretching;
and the sixth stretching time is 5s, the stretching pressure is 7-9MPa, the temperature of a heating ring of the stretching machine is 70-85 ℃, and the cylindrical semi-finished product VI is obtained by stretching.
In the stretching engineering, the heating ring on the stretching machine is used for heating at constant temperature, so that the cold hardening in the material stretching process can be effectively reduced, the product quality is improved, and the reject ratio of the product is reduced.
Further, in the step 2), after the stretching oil is sprayed, a protective film is coated on the surface of the stainless steel sheet.
The surface of the stainless steel is protected by the stretching oil, the abrasion of the surface of the stainless steel is reduced, and the smoothness of the surface of the stainless steel is ensured, but because the stretching oil is consumed in a large amount in the stretching process, the stretching oil must be sprayed before each stretching.
Furthermore, the protective film is a composite film which takes a porous modified polyurethane film as a matrix and is compounded with polyacrylic acid on the matrix.
The modified polyurethane film has good toughness, the tensile property of the modified polyurethane film is improved by compounding with polyacrylic acid, and the porous structure of the matrix provides more binding sites for compounding of the acrylic acid, so that the acrylic acid and the modified polyurethane film can be combined more tightly.
Further, the preparation method of the protective film comprises the following steps:
preparing a matrix: drying sodium chloride particles, grinding and sieving the sodium chloride particles by a 300-mesh sieve to obtain sodium chloride powder, weighing modified polyurethane, adding the sodium chloride powder, adding 1, 4-dioxane, continuously stirring until the solution is completely viscous, pouring the solution into a mold, standing, air-drying and curing, removing a film, soaking the film in deionized water, changing water once every 12 hours, standing for 3-4 days in vacuum, taking out the film, and drying to obtain a substrate;
grafting: taking ammonium ceric nitrate, nitric acid and acrylic acid, stirring and mixing uniformly to obtain a mixed solution, adding a substrate into 10wt% potassium persulfate solution, soaking for 5 hours at the temperature of 80 ℃, taking out the substrate, washing the substrate with deionized water, soaking the substrate in the mixed solution, reacting for 4 hours at the temperature of 50 ℃ under the atmosphere of argon, taking out the substrate, soaking the substrate in 90 ℃ hot water for 24 hours, changing the hot water every 5 hours, and washing the substrate with deionized water after soaking is finished to obtain an acrylic acid grafted substrate;
compounding: spreading an acrylic acid grafting base in a mold, weighing ferric nitrate, N' N-methylene acrylamide and 2-ketoglutaric acid, adding deionized water, stirring uniformly, pouring into the mold, standing and reacting for 6 hours under the conditions of room temperature, shading and ultraviolet lamp irradiation, taking out and soaking in 7mol/L sodium chloride solution after the reaction is finished, standing for 20-24 hours, taking out, and drying to obtain the protective film.
Acrylic acid is introduced on a matrix, polyacrylic acid is generated through crosslinking under the action of ultraviolet light, ferric ions are introduced through adding ferric nitrate, the ferric ions and the polyacrylic acid are complexed to form physical crosslinking points which can be used as sacrificial bonds in the stretching process to consume stretching force, the added N' N-methylene acrylamide can be crosslinked with the polyacrylic acid, so that a crosslinking layer is compounded on the matrix, the mechanical property of the whole protective film is improved, molecular chains of the polyacrylic acid can be better wound through soaking in a sodium chloride solution, gaps among molecules are reduced, and the mechanical property of the protective film is further improved.
Further, the concentration of ammonium ceric nitrate in the mixed solution is 0.02mol/L, the concentration of nitric acid is 0.2mol/L, and the concentration mass concentration of acrylic acid is 1-5wt%.
Further, the molar ratio of the acrylic acid, the ferric nitrate, the N' N-methylene acrylamide and the 2-ketoglutaric acid is 1.
Further, the preparation method of the modified polyurethane comprises the following steps: weighing dihydroxy polyether and polyether triol, stirring and mixing uniformly, distilling at 120 ℃ under reduced pressure for 2h, cooling to 70 ℃, introducing nitrogen, dropwise adding isophorone diisocyanate and 1, 4-butanediol at the speed of 10-15d/min, stirring for 10min after dropwise addition is finished, adding dibutyltin dilaurate, continuously stirring for reacting for 1h, adding 3, 3-dithiobis (propionohydrazide), continuously stirring for reacting for 2h, adding acetone, adding bis (2-aminophenyl) disulfide, stirring for reacting for 15min, cooling to 40 ℃, adding dimethyl silicone oil, standing overnight, and vacuum drying to obtain the modified polyurethane.
The polyurethane with a three-dimensional structure is generated through the reaction of dihydroxy polyether, polyether triol and isophorone diisocyanate, a disulfide bond is introduced through bis (2-aminophenyl) disulfide, the self-healing performance of a matrix is improved through the reversible reaction performance of the disulfide bond, and the reversible reaction of the disulfide bond can be promoted by the temperature and the absorbed heat during stretching, so that the protective film can rapidly recover performance under the action of the disulfide bond when intermolecular fracture is caused by tensile force in the stretching process, and the protective film is prevented from being easily broken in the stretching process.
Further, the thickness of the composite film is 10-20 μm.
The invention has the beneficial effects that:
1. according to the intelligent stretching processing method for the heat-insulating container, intelligent automatic stretching is adopted, the image acquisition device, the central processing unit, the mechanical arm and the like replace the existing manual operation, the manual work is liberated from the low-added-value work, and the repetitive strain is reduced; the stretching treatment method has compact process operation, each device is controlled by the central processing unit, the operation beats are consistent, products are not overstocked between working procedures, the stainless steel surface scratch, abrasion and wire drawing caused by turnover between the working procedures can be effectively reduced, and a good foundation is provided for the subsequent electrolysis procedure.
2. According to the intelligent stretching treatment method for the heat preservation container, the protective film is arranged and matched with the stretching oil for use, the surface of the stainless steel is well protected, and the good toughness and the self-healing performance of the protective film are utilized, so that the stainless steel sheet can be stretched in a stretching process without deformation and breakage, the stretching oil does not need to be sprayed repeatedly in the whole stretching process, the consumption of the stretching oil is greatly reduced, and the stretching time is shortened.
Detailed Description
The present invention will be described in detail with reference to specific examples below:
according to the intelligent stretching treatment method for the heat preservation container, intelligent automatic stretching is adopted, the image acquisition device, the central processing unit, the mechanical arm and the like replace the existing manual operation, the manual work is released from the low-added-value work, and the repeated aging loss is reduced. The method comprises the following specific steps:
example preparation of a protective film 1
Preparation of modified polyurethane
Weighing dihydroxy polyether and polyether triol with equal molar mass, stirring and mixing uniformly, distilling at 120 ℃ for 2h under reduced pressure, cooling to 70 ℃, introducing nitrogen, dropwise adding isophorone diisocyanate, 1, 4-butanediol, isophorone diisocyanate, 1, 4-butanediol and dihydroxy polyether at the speed of 10d/min, wherein the molar mass ratio of the isophorone diisocyanate to the 1, 4-butanediol to the dihydroxy polyether is 1.
Preparation of protective film
Preparing a matrix: drying sodium chloride particles, grinding and sieving the sodium chloride particles by using a 300-mesh sieve to obtain sodium chloride powder, weighing modified polyurethane, adding 2 times of the sodium chloride powder by mass of the modified polyurethane, adding 10 times of 1, 4-dioxane by mass of the modified polyurethane, continuously stirring the mixture until the mixture is completely dissolved, pouring the solution into a mold, standing, air-drying and curing the mixture, removing a film, soaking the film in deionized water, changing water every 12 hours, standing the film in vacuum for 4 days, taking out the film, and drying the film at the temperature of 35 ℃ to obtain a matrix;
grafting: taking ammonium ceric nitrate, nitric acid and acrylic acid, stirring and mixing uniformly to obtain a mixed solution with the concentration of 0.02mol/L of ammonium ceric nitrate, the concentration of 0.2mol/L of nitric acid and the concentration mass concentration of 1wt% of acrylic acid, completely immersing a substrate in 10wt% potassium persulfate solution, soaking for 5 hours at the temperature of 80 ℃, taking out the substrate, washing the substrate with deionized water, soaking in the mixed solution, reacting for 4 hours at the temperature of 50 ℃ in an argon atmosphere, taking out the substrate, soaking in 90 ℃ hot water for 24 hours, changing the hot water once every 5 hours, and washing with the deionized water after soaking to obtain an acrylic acid grafted substrate;
compounding: the preparation method comprises the steps of flatly paving an acrylic acid grafting matrix in a mold, respectively weighing ferric nitrate, N 'N-methylene acrylamide and 2-ketoglutaric acid according to the molar ratio of acrylic acid, ferric nitrate, N' N-methylene acrylamide and 2-ketoglutaric acid of 1: 0.1.
EXAMPLE two preparation of protective film 2
Preparation of modified polyurethane
Weighing dihydroxy polyether and polyether triol with equal molar mass, stirring and mixing uniformly, distilling at 120 ℃ for 2h under reduced pressure, cooling to 70 ℃, introducing nitrogen, dropwise adding isophorone diisocyanate, 1, 4-butanediol, isophorone diisocyanate, 1, 4-butanediol and dihydroxy polyether at the speed of 15d/min, wherein the molar mass ratio of the isophorone diisocyanate to the 1, 4-butanediol to the dihydroxy polyether is 1.
Preparation of protective film
Preparing a matrix: drying sodium chloride particles, grinding and sieving the sodium chloride particles by using a 300-mesh sieve to obtain sodium chloride powder, weighing modified polyurethane, adding 2.5 times of the sodium chloride powder by mass of the modified polyurethane, adding 10 times of 1, 4-dioxane by mass of the modified polyurethane, continuously stirring the mixture until the solution is completely viscous, pouring the solution into a mold, standing, air-drying and curing the solution, removing a film, soaking the film in deionized water, changing water every 12 hours, standing the film in vacuum for 3 days, taking out the film, and drying the film at the temperature of 35 ℃ to obtain a matrix;
grafting: taking ammonium ceric nitrate, nitric acid and acrylic acid, stirring and mixing uniformly to obtain a mixed solution with the concentration of 0.02mol/L of ammonium ceric nitrate, the concentration of 0.2mol/L of nitric acid and the concentration mass concentration of 2wt% of acrylic acid, completely immersing a substrate in 10wt% potassium persulfate solution, soaking for 5 hours at the temperature of 80 ℃, taking out the substrate, washing the substrate with deionized water, soaking in the mixed solution, reacting for 4 hours at the temperature of 50 ℃ in an argon atmosphere, taking out the substrate, soaking in 90 ℃ hot water for 24 hours, changing the hot water once every 5 hours, and washing with the deionized water after soaking to obtain an acrylic acid grafted substrate;
compounding: the preparation method comprises the steps of flatly paving an acrylic acid grafting matrix in a mold, respectively weighing ferric nitrate, N 'N-methylene acrylamide and 2-ketoglutaric acid according to the molar ratio of acrylic acid, ferric nitrate, N' N-methylene acrylamide and 2-ketoglutaric acid being 1.
EXAMPLE three preparation of protective film 3
Preparation of modified polyurethane
Weighing dihydroxy polyether and polyether triol with equal molar mass, stirring and mixing uniformly, distilling at 120 ℃ for 2h under reduced pressure, cooling to 70 ℃, introducing nitrogen, dropwise adding isophorone diisocyanate, 1, 4-butanediol, isophorone diisocyanate, 1, 4-butanediol and dihydroxy polyether at the speed of 12d/min, wherein the molar mass ratio of the isophorone diisocyanate to the 1, 4-butanediol to the dihydroxy polyether is 1.
Preparation of protective film
Preparing a matrix: drying sodium chloride particles, grinding and sieving the sodium chloride particles by using a 300-mesh sieve to obtain sodium chloride powder, weighing modified polyurethane, adding 3 times of the sodium chloride powder by mass of the modified polyurethane, adding 10 times of 1, 4-dioxane by mass of the modified polyurethane, continuously stirring the mixture until the mixture is completely dissolved, pouring the solution into a mold, standing, air-drying and curing the mixture, removing a film, soaking the film in deionized water, changing water every 12 hours, standing the film in vacuum for 4 days, taking out the film, and drying the film at the temperature of 35 ℃ to obtain a matrix;
grafting: taking ammonium ceric nitrate, nitric acid and acrylic acid, stirring and mixing uniformly to obtain a mixed solution with the concentration of the ammonium ceric nitrate being 0.02mol/L, the concentration of the nitric acid being 0.2mol/L and the concentration mass concentration of the acrylic acid being 5wt%, completely immersing a substrate in 10wt% potassium persulfate solution, soaking for 5 hours at the temperature of 80 ℃, taking out the substrate, washing the substrate with deionized water, soaking in the mixed solution, reacting for 4 hours at the temperature of 50 ℃ in an argon atmosphere, taking out the substrate, soaking with 90 ℃ hot water for 24 hours, changing the hot water once every 5 hours, washing with the deionized water after soaking is finished, and obtaining the acrylic acid grafted substrate;
compounding: the preparation method comprises the steps of flatly paving an acrylic acid grafting matrix in a mold, respectively weighing ferric nitrate, N 'N-methylene acrylamide and 2-ketoglutaric acid according to the molar ratio of acrylic acid, ferric nitrate, N' N-methylene acrylamide and 2-ketoglutaric acid being 1.
Example four
In this example, a food grade SUS304 stainless steel sheet having a diameter of 179mm and a thickness of 1.0mm was selected for the drawing treatment.
1) The method comprises the steps that an image acquisition device is used for acquiring images of a stainless steel sheet to be stretched, ultrasonic waves are used for detecting the thickness of the stainless steel sheet, the acquired image information and the acquired thickness information are transmitted to a central processing unit, an image processing unit in the central processing unit judges whether the size and the thickness of the stainless steel sheet meet requirements or not and whether impurities exist on the surface of the stainless steel sheet or not according to the image information acquired by the image acquisition device, and when the size and the thickness of the stainless steel sheet meet the requirements and the surface is clean and free of impurities, the stainless steel sheet is judged to be a qualified stainless steel sheet;
2) The central processing unit controls the manipulator to clamp qualified stainless steel sheets to pass through the stretching oil nozzle, the stretching oil nozzle detects the passing of the stainless steel sheets through the sensor, and the central processing unit controls the stretching oil nozzle to spray stretching oil;
3) Stainless steel thin slice that will spray tensile oil arranges automatic stretcher in and stretches, and automatic stretcher includes six automatic stretchers of group, and equal fixed mounting has the arm between adjacent two sets of automatic stretchers, specifically is:
the first stretching time is 5s, the stretching pressure is 12MPa, the temperature of a heating ring of a stretching machine is 90 ℃, the cylindrical semi-finished product I is obtained by stretching, the diameter of the semi-finished product I is 95.4mm, the height of the semi-finished product I is 73mm, and after the stretching is finished, the surface of the semi-finished product I is sprayed with stretching oil and is sent to the second stretching process by using a mechanical arm;
the second stretching time is 5.5s, the stretching pressure is 12MPa, the temperature of a heating ring of a stretching machine is 85 ℃, the cylindrical semi-finished product II is obtained by stretching, the diameter of the semi-finished product II is 86.4mm, the height of the semi-finished product II is 97.1mm, and after the stretching is finished, the surface of the semi-finished product II is sprayed with stretching oil and is sent to a third stretching process by using a mechanical arm;
the third stretching time is 6s, the stretching pressure is 10MPa, the temperature of a heating ring of a stretching machine is 85 ℃, the cylindrical semi-finished product III is obtained by stretching, the diameter of the semi-finished product III is 82.5mm, the height of the semi-finished product III is 112.8mm, and after the stretching is finished, the surface of the semi-finished product III is sprayed with stretching oil and sent to the fourth stretching process by using a mechanical arm;
the fourth stretching time is 5s, the stretching pressure is 10MPa, the temperature of a heating ring of a stretching machine is 70 ℃, the obtained cylindrical semi-finished product IV is stretched, the diameter of the semi-finished product IV is 75.3mm, the height of the semi-finished product IV is 127.8mm, and after the stretching is finished, the surface of the semi-finished product IV is sprayed with stretching oil and sent to the fifth stretching process by a mechanical arm;
the time of the fifth stretching is 6s, the stretching pressure is 9MPa, the temperature of a heating ring of a stretching machine is 70 ℃, the cylindrical semi-finished product V is obtained by stretching, the diameter of the semi-finished product V is 69.8mm, the height of the semi-finished product V is 148mm, and after the stretching is finished, the surface of the semi-finished product V is sprayed with stretching oil and is sent to the sixth stretching process by using a mechanical arm;
and the sixth stretching time is 5s, the stretching pressure is 9MPa, the temperature of a heating ring of the stretching machine is 70-DEG C, the cylindrical semi-finished product VI obtained by stretching is 65mm in diameter and 175mm in height, and after the stretching is finished, the semi-finished product VI is taken out by a mechanical arm and placed on a conveyor belt to enter the next treatment process.
EXAMPLE five
In this embodiment, food-grade SUS304 stainless steel is used for stretching treatment, a stainless steel sheet with a diameter of 261mm and a thickness of 1.0mm is selected, and after spraying stretching oil, a protective film of the first embodiment is attached to the surface of the stainless steel sheet before stretching, specifically:
1) The method comprises the steps that an image acquisition device is used for acquiring images of a stainless steel sheet needing to be stretched, ultrasonic waves are used for detecting the thickness of the stainless steel sheet, the acquired image information and the thickness information are transmitted to a central processing unit, an image processing unit in the central processing unit judges whether the size and the thickness of the stainless steel sheet meet requirements or not and whether impurities exist on the surface of the stainless steel sheet or not according to the image information acquired by the image acquisition device, and when the size and the thickness of the stainless steel sheet meet the requirements and the surface is clean and free of impurities, the stainless steel sheet is judged to be qualified;
2) The central processing unit controls the mechanical arm to clamp qualified stainless steel sheets to pass through the stretching oil nozzle, the stretching oil nozzle detects the stainless steel sheets to pass through the sensor, the central processing unit controls the stretching oil nozzle to spray stretching oil, after the spraying is finished, the mechanical arm clamps the stainless steel sheets to be placed in the automatic film covering machine, and the central processing unit controls the automatic film covering machine to cover the protective film on the surface of the stainless steel sheets coated with the stretching oil;
3) The stainless steel thin slice that will paste and cover the protective layer is arranged in the automatic stretching machine group and is stretched, and the automatic stretching machine group includes six automatic stretching machines, and equal fixed mounting has the arm between adjacent two sets of automatic stretching machines, specifically does:
the first stretching time is 5s, the stretching pressure is 10MPa, the temperature of a heating ring of a stretching machine is 100 ℃, the cylindrical semi-finished product I is obtained by stretching, the diameter of the semi-finished product I is 145.1mm, and the height of the semi-finished product I is 130.2mm;
the second stretching time is 5.5s, the stretching pressure is 10MPa, the temperature of a heating ring of a stretching machine is 90 ℃, and a cylindrical semi-finished product II is obtained by stretching, wherein the diameter of the semi-finished product II is 138.2mm, and the height of the semi-finished product II is 141.7mm;
the third stretching time is 6s, the stretching pressure is 9MPa, the temperature of a heating ring of a stretching machine is 90 ℃, and a cylindrical semi-finished product III is obtained by stretching, wherein the diameter of the semi-finished product III is 126.7mm, and the height of the semi-finished product III is 152.6mm;
the fourth stretching time is 5s, the stretching pressure is 9MPa, the temperature of a heating ring of a stretching machine is 85 ℃, and the cylindrical semi-finished product IV is obtained by stretching, wherein the diameter of the semi-finished product IV is 113.2mm, and the height of the semi-finished product IV is 164.9mm;
the fifth stretching time is 6s, the stretching pressure is 7MPa, the temperature of a heating ring of a stretching machine is 85 ℃, the cylindrical semi-finished product V is obtained by stretching, the diameter of the semi-finished product V is 103.7mm, and the height of the semi-finished product V is 182.9mm;
and the sixth stretching time is 5s, the stretching pressure is 7MPa, the temperature of a heating ring of the stretching machine is 85 ℃, the cylindrical semi-finished product VI is obtained by stretching, the diameter of the semi-finished product VI is 95mm, the height of the semi-finished product VI is 190mm, and after the stretching is finished, the semi-finished product VI is taken out through a mechanical arm, placed on a conveyor belt and enters the next treatment process.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims. The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (6)
1. An intelligent stretching treatment method for a heat-preservation container is characterized in that the method is used for stretching stainless steel into an inner container of the heat-preservation container, and comprises the following steps:
1) The method comprises the steps that an image acquisition device is used for acquiring images of a stainless steel sheet to be stretched, ultrasonic waves are used for detecting the thickness of the stainless steel sheet, the acquired image information and the acquired thickness information are transmitted to a central processing unit, an image processing unit in the central processing unit judges whether the size and the thickness of the stainless steel sheet meet requirements or not and whether impurities exist on the surface of the stainless steel sheet or not according to the image information acquired by the image acquisition device, and when the size and the thickness of the stainless steel sheet meet the requirements and the surface is clean and free of impurities, the stainless steel sheet is judged to be a qualified stainless steel sheet;
2) The central processing unit controls the manipulator to clamp qualified stainless steel sheets to pass through the stretching oil nozzle, the stretching oil nozzle detects the stainless steel sheets to pass through by the sensor, the central processing unit controls the stretching oil nozzle to spray stretching oil, and after the stretching oil is sprayed, a protective film is covered on the surface of the stainless steel sheets, wherein the protective film takes a porous modified polyurethane film as a matrix and is compounded with a polyacrylic acid composite film;
3) Placing the stainless steel sheet sprayed with the drawing oil in an automatic drawing unit for drawing, wherein the automatic drawing unit comprises six groups of automatic drawing machines, mechanical arms are fixedly arranged between every two adjacent groups of automatic drawing machines, and after drawing is finished, taking out a finished product through the mechanical arms, placing the finished product on a conveyor belt, and entering the next processing procedure;
the preparation method of the protective film in the step 2) comprises the following steps:
preparing a matrix: drying sodium chloride particles, grinding and sieving the sodium chloride particles by a 300-mesh sieve to obtain sodium chloride powder, weighing modified polyurethane, adding the sodium chloride powder, adding 1, 4-dioxane, continuously stirring until the sodium chloride powder is completely dissolved, pouring the solution which is viscous into a mold, standing, air-drying and curing, removing a film, soaking the film in deionized water, changing water once every 12 hours, standing for 3-4 days in vacuum, taking out the film, and drying to obtain a substrate;
grafting: taking ammonium ceric nitrate, nitric acid and acrylic acid, stirring and mixing uniformly to obtain a mixed solution, adding a substrate into 10wt% potassium persulfate solution, soaking for 5 hours at the temperature of 80 ℃, taking out the substrate, washing the substrate with deionized water, soaking the substrate in the mixed solution, reacting for 4 hours at the temperature of 50 ℃ under the atmosphere of argon, taking out the substrate, soaking the substrate in 90 ℃ hot water for 24 hours, changing the hot water every 5 hours, and washing the substrate with deionized water after soaking is finished to obtain an acrylic acid grafted substrate;
compounding: spreading an acrylic acid grafting matrix in a mold, weighing ferric nitrate, N' N-methylene acrylamide and 2-ketoglutaric acid, adding deionized water, stirring uniformly, pouring into the mold, standing and reacting for 6 hours under the conditions of room temperature, shading and ultraviolet lamp irradiation, taking out and soaking in 7mol/L sodium chloride solution after the reaction is finished, standing for 20-24 hours, taking out, and drying to obtain the protective film.
2. The intelligent stretching processing method for the heat preservation container as claimed in claim 1, wherein the stainless steel sheet is stretched six times in an automatic stretching unit, specifically:
the first stretching time is 5s, the stretching pressure is 10-12MPa, the temperature of a heating ring of a stretching machine is 90-100 ℃, and a cylindrical semi-finished product I is obtained by stretching;
the second stretching time is 5.5s, the stretching pressure is 10-12MPa, the temperature of a heating ring of a stretching machine is 85-90 ℃, and a cylindrical semi-finished product II is obtained by stretching;
the third stretching time is 6s, the stretching pressure is 9-10MPa, the temperature of a heating ring of a stretching machine is 85-90 ℃, and a cylindrical semi-finished product III is obtained by stretching;
the fourth stretching time is 5s, the stretching pressure is 9-10MPa, the temperature of a heating ring of a stretching machine is 70-85 ℃, and a cylindrical semi-finished product IV is obtained by stretching;
the fifth stretching time is 6s, the stretching pressure is 7-9MPa, the temperature of a heating ring of a stretching machine is 70-85 ℃, and the cylindrical semi-finished product V is obtained by stretching;
and the sixth stretching time is 5s, the stretching pressure is 7-9MPa, the temperature of a heating ring of a stretching machine is 70-85 ℃, and a cylindrical semi-finished product VI is obtained by stretching.
3. The intelligent stretching treatment method for the heat preservation container as claimed in claim 2, wherein the concentration of the ammonium cerium nitrate in the mixed solution is 0.02mol/L, the concentration of the nitric acid is 0.2mol/L, and the mass concentration of the acrylic acid is 1-5wt%.
4. The intelligent stretching treatment method for the heat-preservation container according to claim 3, wherein the molar ratio of the acrylic acid, the ferric nitrate, the N' N-methylene acrylamide and the 2-ketoglutaric acid is 1.1.
5. The intelligent stretching treatment method for the heat-preservation container as claimed in claim 4, wherein the preparation method of the modified polyurethane comprises the following steps: weighing dihydroxy polyether and polyether triol, stirring and mixing uniformly, distilling at 120 ℃ under reduced pressure for 2h, cooling to 70 ℃, introducing nitrogen, dropwise adding isophorone diisocyanate and 1, 4-butanediol at the speed of 10-15d/min, stirring for 10min after dropwise addition is finished, adding dibutyltin dilaurate, continuously stirring for reacting for 1h, adding 3, 3-dithiobis (propionohydrazide), continuously stirring for reacting for 2h, adding acetone, adding bis (2-aminophenyl) disulfide, stirring for reacting for 15min, cooling to 40 ℃, adding dimethyl silicone oil, standing overnight, and vacuum drying to obtain the modified polyurethane.
6. The intelligent stretching treatment method for the heat-preservation container according to claim 5, wherein the thickness of the composite film is 10-20 μm.
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