CN110142309B - Method for preventing paint film of edge sealing section bar of all-aluminum furniture from cracking - Google Patents
Method for preventing paint film of edge sealing section bar of all-aluminum furniture from cracking Download PDFInfo
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- CN110142309B CN110142309B CN201910503909.1A CN201910503909A CN110142309B CN 110142309 B CN110142309 B CN 110142309B CN 201910503909 A CN201910503909 A CN 201910503909A CN 110142309 B CN110142309 B CN 110142309B
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- aluminum alloy
- aluminum
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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
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
- B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
- B44C1/175—Transfer using solvent
- B44C1/1756—Decalcomanias applied under heat and pressure, e.g. provided with a heat activable adhesive
Abstract
The invention belongs to the field of aluminum alloy furniture, and relates to a method for preventing a paint film of an edge sealing section of all-aluminum furniture from cracking, which comprises a section extrusion process, a spraying process, a wood grain transfer process and a bending process, wherein the spraying process limits the uniformity of a sprayed film layer and the average thickness to be about 50 mu m, the aluminum alloy section subjected to the wood grain transfer process is bent by a bending machine in the bending process, the preheating treatment is adopted before bending, the bending temperature of the aluminum alloy section is more than or equal to 85 ℃, and the problem that the appearance of a product is influenced due to the cracking phenomenon of the paint film in the edge sealing and bending process of the all-aluminum furniture in.
Description
Technical Field
The invention belongs to the field of aluminum alloy furniture, and relates to a method for preventing a paint film of an edge sealing section bar of all-aluminum furniture from cracking.
Background
With the environment of green environmental protection, energy conservation and emission reduction advocated by the nation, the development momentum of the all-aluminum furniture industry is overwhelming. The all-aluminum furniture with the formaldehyde content of 0 has great functions and significance in economic value, product market competitiveness, energy conservation, emission reduction, recyclability, product experience and the like. All-aluminum homes generally adopt aluminum section plates to be spliced and processed, and the aluminum section plates are easy to disassemble and assemble and cannot be disassembled to damage the aluminum section plates. Because of light weight and convenient transportation, the utility model can be transported to different places for repeated use. Aluminum profile plate type all-aluminum home belongs to pure aluminum products, is really zero in formaldehyde, and is a better choice for home profiles in the green environmental-friendly era. The surface of the aluminum plate is subjected to specialized treatment, so that the aluminum plate has strong corrosion resistance; in general, the all-aluminum home really achieves the purposes of water resistance, fire resistance, moisture resistance and moth prevention. However, in the recent all-aluminum furniture factory, during the process of making the edge sealing of the all-aluminum wood-like plate, the phenomenon of paint film cracking is found during the bending process. In order to strengthen the market competitiveness of products, improve the appearance quality of the products and solve the problem that a paint film of an edge sealing section bar of all-aluminum furniture cracks, the market is urgent.
The all-aluminum furniture is a product which appears according to the time-dependent trend, and the existing all-aluminum furniture solves the cracking phenomenon by adopting a plastic bent angle to replace aluminum alloy at a bent part for splicing treatment or adopting post-art designing treatment. The production process of the product by adopting the splicing process is complex in preparation in the early stage, low in production efficiency, high in production cost and greatly discounted in integrity and attractiveness. The adoption of the later-stage art designing treatment can save certain manufacturing cost, but the efficiency is low, and the aesthetic property can not be ensured.
Disclosure of Invention
In view of the above, the invention provides a method for preventing paint film cracking of edge sealing sections of all-aluminum furniture, and aims to solve the problem that paint film cracking occurs in the edge sealing and bending process of all-aluminum furniture in the prior art and the product appearance is affected.
In order to achieve the aim, the invention provides a method for preventing a paint film of an edge sealing section bar of all-aluminum furniture from cracking, which comprises the following steps:
A. profile extrusion: placing the 6060 aluminum alloy cast ingot in the T4 state in an extrusion die of an extruder for extrusion forming, and cooling the extruded aluminum section in an air cooling mode;
B. the spraying process comprises the following steps: drying the extruded aluminum alloy section by adopting an automatic production line, wherein the advancing speed of the aluminum alloy section is 3m/min, the air drying temperature is 105 ℃, the dried aluminum alloy section is sprayed by adopting a manual production line, the sprayed film layer is uniform, the average thickness is about 50 mu m, the advancing speed of the sprayed aluminum alloy section is not more than 1.2m/min, and the aluminum alloy section is solidified and cooled at the cooling temperature of 230-260 ℃;
C. the wood grain transfer printing process comprises the following steps: spreading the aluminum alloy section which is sprayed with the film layer and solidified and cooled on a transfer printing table, placing wood grain paraffin vapor paper above the aluminum alloy section, covering an upper cover plate for heating and heat preservation, sublimating paraffin into paraffin vapor under the action of high temperature, and sublimating the paraffin vapor to the surface of the aluminum alloy section at the later stage to form a similar wood grain texture pattern, wherein the heating temperature is 220 +/-15 ℃, and the heat preservation time is 15 min;
D. bending process: bending the aluminum alloy section subjected to the wood grain transfer printing process through a bending machine, wherein the aluminum alloy section is subjected to preheating treatment before bending, and the bending temperature of the aluminum alloy section is more than or equal to 85 ℃.
Further, the extruder used in the step A is a 500T single-action forward extruder, and the extrusion die is a combined die.
And furthermore, the environmental humidity in the step B is 30-70%.
And furthermore, an automatic powder spraying growth line is adopted in spraying in the step B, so that the uniformity and stability of the thickness of a sprayed film layer are ensured, the problem of nonuniform radian of a part of film at a position caused by manual powder spraying is solved, and the elimination of human factors is solved for quality stability control and quality problem at the later stage of the product.
The invention has the beneficial effects that:
1. the method for preventing the paint film of the edge sealing section bar of the all-aluminum furniture from cracking disclosed by the invention changes the bending process on the premise of not changing the integral structure and size of the aluminum alloy section bar, properly improves the ductility of the paint film, solves the problem that the bent part of the aluminum alloy section bar is easy to crack, and achieves an ideal integral effect. The aluminum alloy section bar with the edge sealed can be produced by integrated extrusion, and the manufacturing and processing costs of the splicing process, the plastic corner and the later-stage art designer are reduced.
2. The method for preventing the paint film of the edge sealing section bar of the all-aluminum furniture from cracking disclosed by the invention aims at heating the paint film of the section bar which is subjected to spraying curing and wood grain transfer printing, so that the ductility of the paint film is improved, and a large number of experiments prove that when the heating temperature is lower than 85 ℃, the physical activity of the paint film is reduced, the displayed ductility can generate whitening cracking phenomenon when the temperature is higher than 60 ℃, and the use requirement of the product can not be met. The heating temperature is more than or equal to 85 ℃, so that the aluminum alloy section can be ensured not to crack when being bent at 90 ℃, and the aluminum alloy section can be bent to have a better bending effect within 2min30s after wood grain transfer printing and at the room temperature of 20-25 ℃. Meanwhile, the thickness of the paint film is ensured to be about 50 mu m, so that the heating is more uniform, and the cracking prevention effect is optimal.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic diagram of a paint film structure of an all-aluminum furniture edge sealing section bar after bending in the prior art;
FIG. 2 is a schematic diagram of a paint film structure of the edge banding section bar of the all-aluminum furniture after being bent.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Examples
A method for preventing a paint film of an edge sealing section bar of all-aluminum furniture from cracking as shown in fig. 2 comprises the following steps:
A. profile extrusion: placing the 6060 aluminum alloy cast ingot in the T4 state in an extrusion die of an extruder for extrusion forming, cooling the extruded aluminum profile in an air cooling mode, wherein the extruder is a 500T single-action forward extruder, and the extrusion die is a combined die;
B. the spraying process comprises the following steps: drying the extruded aluminum alloy section by adopting an automatic production line, wherein the advancing speed of the aluminum alloy section is 3m/min, the air drying temperature is 105 ℃, the dried aluminum alloy section is sprayed by adopting a manual production line, the sprayed film layer is uniform, the average thickness is about 50 mu m, the advancing speed of the sprayed aluminum alloy section is not more than 1.2m/min, and the aluminum alloy section is solidified and cooled at the cooling temperature of 230-260 ℃;
C. the wood grain transfer printing process comprises the following steps: spreading the aluminum alloy section which is sprayed with the film layer and solidified and cooled on a transfer printing table, placing wood grain paraffin vapor paper above the aluminum alloy section, covering an upper cover plate for heating and heat preservation, sublimating paraffin into paraffin vapor under the action of high temperature, and sublimating the paraffin vapor to the surface of the aluminum alloy section at the later stage to form a similar wood grain texture pattern, wherein the heating temperature is 220 +/-15 ℃, and the heat preservation time is 15 min;
D. bending process: bending the aluminum alloy section subjected to the wood grain transfer printing process through a bending machine, wherein the aluminum alloy section is subjected to preheating treatment before bending, and the bending temperature of the aluminum alloy section is more than or equal to 85 ℃.
Comparative example
A method for preventing a paint film of an edge sealing section bar of all-aluminum furniture from cracking as shown in fig. 1 comprises the following steps:
A. profile extrusion: placing the 6060 aluminum alloy cast ingot in the T4 state in an extrusion die of an extruder for extrusion forming, cooling the extruded aluminum profile in an air cooling mode, wherein the extruder is a 500T single-action forward extruder, and the extrusion die is a combined die;
B. the spraying process comprises the following steps: drying the extruded aluminum alloy section by adopting an automatic production line, wherein the advancing speed of the aluminum alloy section is 3m/min, the air drying temperature is 105 ℃, spraying the dried aluminum alloy section by adopting a manual production line, solidifying and cooling the aluminum alloy section coated with the film layer at the cooling temperature of 230-260 ℃, and the advancing speed of the aluminum alloy section is not more than 1.2 m/min;
C. the wood grain transfer printing process comprises the following steps: spreading the aluminum alloy section which is sprayed with the film layer and solidified and cooled on a transfer printing table, placing wood grain paraffin vapor paper above the aluminum alloy section, covering an upper cover plate for heating and heat preservation, sublimating paraffin into paraffin vapor under the action of high temperature, and sublimating the paraffin vapor to the surface of the aluminum alloy section at the later stage to form a similar wood grain texture pattern, wherein the heating temperature is 220 +/-15 ℃, and the heat preservation time is 15min
D. Bending process: and bending the aluminum alloy section subjected to the wood grain transfer printing process through a bending machine.
As can be seen from the comparison between the graph 1 and the graph 2, the all-aluminum edge sealing section prepared by the improved method for the process of paint film cracking when the all-aluminum furniture edge sealing section is bent has no phenomenon of paint film cracking after being bent.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and 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 modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (4)
1. A method for preventing a paint film of an edge sealing section bar of all-aluminum furniture from cracking is characterized by comprising the following steps:
A. profile extrusion: placing the 6060 aluminum alloy cast ingot in the T4 state in an extrusion die of an extruder for extrusion forming, and cooling the extruded aluminum section in an air cooling mode;
B. the spraying process comprises the following steps: drying the extruded aluminum alloy section by adopting an automatic production line, wherein the advancing speed of the aluminum alloy section is 3m/min, the air drying temperature is 105 ℃, the dried aluminum alloy section is sprayed by adopting a manual production line, the sprayed film layer is uniform, the average thickness is about 50 mu m, the advancing speed of the sprayed aluminum alloy section is not more than 1.2m/min, and the aluminum alloy section is solidified and cooled at the cooling temperature of 230-260 ℃;
C. the wood grain transfer printing process comprises the following steps: spreading the aluminum alloy section which is sprayed with the film layer and solidified and cooled on a transfer printing table, placing wood grain paraffin vapor paper above the aluminum alloy section, covering an upper cover plate for heating and heat preservation, sublimating paraffin into paraffin vapor under the action of high temperature, and sublimating the paraffin vapor to the surface of the aluminum alloy section at the later stage to form a similar wood grain texture pattern, wherein the heating temperature is 220 +/-15 ℃, and the heat preservation time is 15 min;
D. bending process: bending the aluminum alloy section subjected to the wood grain transfer printing process through a bending machine, wherein the aluminum alloy section is subjected to preheating treatment before bending, and the bending temperature of the aluminum alloy section is more than or equal to 85 ℃.
2. The method for preventing paint film cracking of the edge banding section bar of the all-aluminum furniture as claimed in claim 1, wherein the extruder used in step A is a 500T single action forward extruder, and the extrusion die is a split die.
3. The method for preventing the paint film of the edge sealing section bar of the all-aluminum furniture from cracking as claimed in claim 2, wherein the environmental humidity in the step B is 30-70%.
4. The method for preventing the paint film of the edge sealing section bar of the all-aluminum furniture from cracking as claimed in claim 3, wherein the spraying in the step B adopts an automatic powder spraying growth line to ensure the uniformity and stability of the thickness of the sprayed film layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910503909.1A CN110142309B (en) | 2019-06-11 | 2019-06-11 | Method for preventing paint film of edge sealing section bar of all-aluminum furniture from cracking |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910503909.1A CN110142309B (en) | 2019-06-11 | 2019-06-11 | Method for preventing paint film of edge sealing section bar of all-aluminum furniture from cracking |
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| Publication Number | Publication Date |
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| CN110142309A CN110142309A (en) | 2019-08-20 |
| CN110142309B true CN110142309B (en) | 2020-09-15 |
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| CN201910503909.1A Active CN110142309B (en) | 2019-06-11 | 2019-06-11 | Method for preventing paint film of edge sealing section bar of all-aluminum furniture from cracking |
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Denomination of invention: A method for preventing paint film cracking of all aluminum furniture edge sealing profile Effective date of registration: 20210730 Granted publication date: 20200915 Pledgee: Bank of Harbin Co.,Ltd. Shenyang Branch Pledgor: LIAONING ZHONGWANG QUANLV INTELLIGENT FURNITURE TECHNOLOGY Co.,Ltd. Registration number: Y2021990000656 |
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