CN1116573C - Manufacture of refrigerator door plank - Google Patents
Manufacture of refrigerator door plank Download PDFInfo
- Publication number
- CN1116573C CN1116573C CN 00117310 CN00117310A CN1116573C CN 1116573 C CN1116573 C CN 1116573C CN 00117310 CN00117310 CN 00117310 CN 00117310 A CN00117310 A CN 00117310A CN 1116573 C CN1116573 C CN 1116573C
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- refrigerator door
- mould
- manufacture method
- door plank
- plate
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Abstract
The present invention relates to a method for manufacturing a door panel of a refrigerator. A prepared forming mould with vacuum suction molding is arranged on a suction molding machine and is preheated. A plastic sheet plate is arranged on a vacuum suction molding machine and is heated. The plastic sheet plate is blown after being heated. Vacuum pumping and suction molding are carried out to the heated plastic plate with foam-shaped deformation, and the plastic plate is formed along a mould cavity of the mould. The manufacture method simplifies production process, enhances efficiency, and is suitable for the complicated appearance molding. As the present invention only uses common suction molding machines and has no need of large-sized injection molding devices, the mould cost and the total door panel cost are reduced. Simultaneously, as the preparation period of the suction molding mould is short, the product development period can be shortened, and the wall thickness of the door panel is decreased.
Description
The present invention relates to refrigerator door plank, relate in particular to a kind of refrigerator door plank forming and machining method.
The traditional diamond-making technique of refrigerator door plank is shaped for the sheet metal cold stamping at present.Because be subjected to the limitation of Sheet Metal Forming Technology itself, this method only adapts to the processing of the simple door face board of appearance and modeling.For the door face board of appearance and modeling complexity, be to be difficult to realize with the method for punch process.Perhaps, promptly enable to realize, also need through multi-step forming processes processing; So, die sinking quantity is many, and the mould total cost is higher, need take many pressing equipments simultaneously, many people's operations, and production efficiency is lower, and the cost of door face board is higher naturally.In addition, the metallic door panel not only exists and easily gets rusty and on-insulated deficiency, and the refrigerator door of being made up of itself and other working of plastics, and because of the shrinkage factor difference of metal and plastics is bigger, variations in temperature makes it produce bigger internal stress and easily produces distortion.
Along with the variation of the market demand, the appearance and modeling of refrigerator door plank becomes increasingly complex.Processing method for stamping originally can not adapt to this variation.So occurred the refrigerator door plank of injection molded in recent years.Compare with the door face board of drawing, the door face board of injection molded has solved the many problems of operation, not only adapts to complicated appearance and modeling, and door face board insulation non-corrosive.But its injection mold is very expensive, and needs to use large-scale injection-moulding device, and because the Shooting Technique requirement, the door face board wall thickness is bigger, and material usage is more, and therefore, the door face board cost is high, applies thereby limited it.
The object of the present invention is to provide a kind of refrigerator door plank forming and machining method, it both can overcome the moulding of metal sheet stamping formed door panel and simply reach the deficiency that manufacturing procedure is many, efficient is low, also can avoid the deficiency of injection molded door face board mould costliness and the large-scale injection-moulding device of needs, the refrigerator door plank cost is descended significantly.
The objective of the invention is to be achieved through the following technical solutions: a kind of manufacture method of refrigerator door plank, it is characterized in that, adopt the vacuum forming manufacturing process, by the vacuum forming shaping dies plastics plate is vacuumized plastic uptake by Packing Machine, described plastics plate is processed into along the mold cavity shaping surface.Concrete procedure comprises: material loading, and----frothing,--plastic uptake--squeezes the limit and--cools off--demoulding--pickup---trimming in heating.
Wherein, concrete moulding manufactures and designs the structure of vacuum forming finishing die according to refrigerator door plank, to guarantee the demoulding and the convenience of described product side cut and the fineness of die face of plastic uptake shaping back product simultaneously, thereby guarantee the surface smoothness of the described product in plastic uptake shaping back, the concavo-convex vestige on described product surface is minimized.
Wherein, described plastics plate is selected ABS, HIPS or other double-deck multilayer composite sheets, film coated plate for use.
Realize the manufacture method of a kind of refrigerator door plank of the present invention, its advantage is: 1) compare with the punching press door face board, the production of plastic uptake door face board only needs a Packing Machine and a cover adsorption mould.Die cost is lower; Have only a procedure, operating personnel greatly reduce, and production efficiency is higher.Therefore the overall cost of door face board is lower.The plastic uptake door face board adapts to complicated appearance and modeling.Plastic uptake door face board insulation non-corrosive.The shrinkage factor of plastic uptake door face board and other working of plastics of forming refrigerator door (as door lining etc.) is close even consistent, so door body internal stress is little during variations in temperature, and refrigerator door is difficult for producing distortion.Adopt the plastic uptake door face board, Refrigerator door structure and assembly technology are simplified greatly.This is because the plastic uptake door face board is a disposable integral to be shaped, and has saved parts such as the upper and lower location-plate of door body.As the door face board of certain BCD202 of company refrigerator, adopt the metal film coated plate cold stamping to be shaped and process, need six road stamping procedures altogether, six cover diel total costs are 47.5 ten thousand yuan, use totally six of the above punch press of 160t, hydraulic presses.In addition, the door body also needs upper and lower location-plate, and the structure of door body and assembling are comparatively complicated.The processing if the employing vacuum forming is shaped then only needs the logical Packing Machine of use one Daepori, and the plastics suction mould expense only is about 150,000 yuan, and a door body does not need location-plate, greatly simplification of the structure of door body and assembling.The overall cost of plastic uptake door face board will be significantly less than the overall cost of punching press door face board; 2) compare with injection molded door panel, the production of plastic uptake door face board only need be used common Packing Machine, do not need large-scale injection-moulding device, and Packing Machine is the off-the-shelf equipment of each refrigerator producer indispensability.The price of door face board plastics suction mould is significantly less than the price of injection mold.The preparatory period of plastics suction mould is shorter, can shorten product development cycle.The wall thickness of the comparable injection molded door panel of plastic uptake door face board wall thickness is saved material usage.As: the door face board of certain BCD242 of company refrigerator adopts injection molded processing, and the injection mold expense is 700,000 yuan, uses the 1300t injection machine.Adopting the vacuum forming processing back plastics suction mould expense that is shaped is 150,000 yuan, the existing common Packing Machine of use company, and the door face board weight that plastic uptake is shaped only is about 1/2nd of injection molded door panel weight, the overall cost of door face board reduces greatly.
In sum, the overall cost of plastic uptake door face board will be significantly less than the cost of injection molded door panel.
Below in conjunction with drawings and Examples, the present invention is further illustrated, in the accompanying drawing:
Fig. 1 is the structural representation of plastic uptake door face board of the present invention;
Fig. 2 is the product shaping sketch of plastic uptake door face board shown in Figure 1.
A kind of forming and machining method of refrigerator door plank as shown in Figure 1, adopt the vacuum forming manufacturing process, by the vacuum forming shaping dies plastics plate is vacuumized plastic uptake by Packing Machine, concrete moulding manufactures and designs the structure of vacuum forming finishing die according to refrigerator door plank, when design, guarantee the demoulding of plastic uptake shaping back product and the convenience that described product is cut edge, and adding the fineness that guarantees die face man-hour, thereby guarantee the surface smoothness of the described product in plastic uptake shaping back, the concavo-convex vestige on described product surface is minimized; The plastics plate is selected ABS, HIPS or other double-deck multilayer composite sheets, film coated plate for use.
Be described further the implementation process of the inventive method below in conjunction with embodiment:
1) according to concrete refrigerator door plank design model, manufactures and designs the vacuum forming finishing die.Must there be enough fineness on this mold cavity surface, to guarantee the door face board smooth in appearance, satisfy requirement attractive in appearance, and the aperture that vacuumizes on mold cavity surface must be enough little, and general diameter is less than 0.8 millimeter, otherwise can produce plastic uptake hole trace on the door face board surface; Structure and deformation extent are different and different everywhere with panel for aperture position and quantity; On described adsorption mould, also must be provided with and preheat pipeline, heating tube is arranged in die wall should be evenly to guarantee that all even mold temperature of temperature is stable, because the mould temperature is low excessively, then plate and die face can produce cold spot or internal stress at a touch, so that plastic cracks, and the mould temperature is too high, and plate may adhere on the die face, so that demoulding difficulty, even distortion.
2) select the Packing Machine of suitable ability for use, this Packing Machine should include blows and auxilliary pressing done mechanism.
3) mould is installed on the Packing Machine and to mould carries out preheating.The temperature of mould and die preheating is generally 40-60 ℃, specifically decides on the kind of plastics.
4) be that the sheet plastic (as ABS, HIPS or other double-deck multilayer composite sheets, film coated plate etc.) of 1.5-4.5 millimeter (concrete thickness and used material and door face board shape, structurally associated) is put into and heated on the Packing Machine with thickness, make plate reach the thermoelastic attitude.Herein, it is different different because of material that plastics reach thermoelastic attitude institute's calorific requirement or reach temperature range, same plate temperature everywhere is also different different because of deformation extent, therefore, plate heating-up temperature is everywhere regulated profiled member to obtain with the difference of distortion degree to some extent to temperature.
5) by Packing Machine plate is blown, make plate produce the blister distortion.This process is called for short " frothing ", and purpose is to make it easy to next step plastic uptake be shaped.
6) by mould plate is vacuumized plastic uptake by Packing Machine, make plate along the mold cavity shaping surface, product shaping sketch as shown in Figure 2.Herein, plastics sucking moulding Rear Door wall thickness may be inhomogeneous, and average thickness is advisable with the 1-3 millimeter, but the mould design makes that the thickness for the treatment of crowded end place is less.
7) then, Packing Machine is squeezed material thin by mould at A place, the edge of shaping product even is squeezed off (otherwise the operation of manual trimming will be compared difficulty).
8) Packing Machine makes it keep the shape of mould to the cooling of drying of product surface.
9) the product demoulding.Before the product demoulding, the piece withdrawal earlier of loosing core around the mould, because of mould fineness is very high, for the ease of the demoulding, in the knockout course, the die face spilehole also must be blown simultaneously.
10) product is taken out from Packing Machine; And utilize manual method door face board 1 to be separated with rim charge 2 at product A place.So obtain the door face board of structure shown in Figure 1.Said process can simply reduce: material loading--heats--frothing---plastic uptake
--squeeze the limit and--cool off--demoulding--pickup---trimming.
At present, as adopting ABS, HIPS plate plastics sucking moulding door face board,, also need follow-up surperficial spray treatment for obtaining better appearance.If adopt composite plate or film coated plate to carry out plastic uptake, its door face board surface need not be carried out surface treatment again.
A kind of refrigerator door plank forming and machining method of the present invention, die cost is low, and operation and operating personnel are few, and production efficiency is higher, saves material usage, has simplified processing technology, and product development cycle shortens, so the overall cost of door face board is lower.
Claims (10)
1, a kind of manufacture method of refrigerator door plank is characterized in that, may further comprise the steps: preparation vacuum forming finishing die; Described mould is installed on the vacuum plastic-absorbing machine and to mould carries out preheating; Sheet plastic placed on the vacuum plastic-absorbing machine heat; Heat the back to its air blowing at thin plate; By described vacuum forming finishing die the plastics plate that heats and blister is out of shape is vacuumized plastic uptake by vacuum plastic-absorbing machine, make described plastics plate along the mold cavity shaping surface.
According to the manufacture method of the described refrigerator door plank of claim 1, it is characterized in that 2, described preparation vacuum forming finishing die is to determine its structure according to the concrete moulding of refrigerator door plank.
3, according to the manufacture method of the described refrigerator door plank of claim 1, it is characterized in that, plastics sucking moulding spare is squeezed thin step along its moulding edge in described also comprising after vacuumizing plastics sucking moulding.
4, according to the manufacture method of the described refrigerator door plank of claim 3, it is characterized in that, after thin step is squeezed by described edge, also comprise the cooling of plastics sucking moulding spare and will it demoulding on the Packing Machine take out and its step of blocking along the crowded thin edges of moulding quilt.
According to the manufacture method of the described refrigerator door plank of claim 4, it is characterized in that 5, described plastics plate is that thickness is ABS, the HIPS thin plate of 1.5-4.5mm, also comprises the step of the door face board behind the moulding trimming being carried out surperficial spray treatment.
According to the manufacture method of the described refrigerator door plank of claim 4, it is characterized in that 6, described plastics plate is that thickness is double-deck multilayer composite sheet, the film coated plate of 1.5-4.5mm.
According to the manufacture method of the described refrigerator door plank of claim 1, it is characterized in that 7, described vacuum plastic-absorbing machine is 40-60 ℃ to the temperature range that mould carries out preheating.
According to the manufacture method of the described refrigerator door plank of claim 2, it is characterized in that 8, described mould is provided with the pipeline that preheats of even setting, surface, described mould shape chamber vacuumizes the diameter of aperture less than 0.8mm.
9, according to the manufacture method of the described refrigerator door plank of claim 4, it is characterized in that, before the demoulding, also comprise on the Packing Machine the step loosing core withdrawal and the die face spilehole is blown around the mould at described product.
10, a kind of manufacture method of refrigerator door plank is characterized in that, processing sequence is: material loading, and----frothing,--plastic uptake--squeezes the limit and--cools off--demoulding--pickup---trimming in heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00117310 CN1116573C (en) | 2000-08-01 | 2000-08-01 | Manufacture of refrigerator door plank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00117310 CN1116573C (en) | 2000-08-01 | 2000-08-01 | Manufacture of refrigerator door plank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1336531A CN1336531A (en) | 2002-02-20 |
| CN1116573C true CN1116573C (en) | 2003-07-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00117310 Expired - Fee Related CN1116573C (en) | 2000-08-01 | 2000-08-01 | Manufacture of refrigerator door plank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1116573C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1987304B (en) * | 2005-12-23 | 2010-05-26 | 广东科龙电器股份有限公司 | Refrigerator door and method for producing door |
| CN102252493A (en) * | 2011-06-24 | 2011-11-23 | 浙江普信电器股份有限公司 | Horizontal type freezer using plastic inner container and manufacturing process of plastic inner container thereof |
| CN102569824A (en) * | 2011-12-30 | 2012-07-11 | 黄权波 | Bipolar plate of integrated composite electrode, and manufacturing method and application thereof |
| CN102564021B (en) * | 2012-02-01 | 2013-10-30 | 济南宇翔制冷设备有限公司 | Refrigerator door and processing method thereof |
| CN102538354B (en) * | 2012-03-16 | 2016-12-14 | 海尔集团公司 | Shell corner structure and refrigerator door |
| CN104760269A (en) * | 2015-03-28 | 2015-07-08 | 合肥汇通控股股份有限公司 | Heat bend molding technology of plastic nameplate |
| CN104985888B (en) * | 2015-07-29 | 2017-04-19 | 浙江兆奕科技有限公司 | Thin-film composite glass fiber board 3D curved surface forming method |
| CN105291492A (en) * | 2015-11-26 | 2016-02-03 | 江阴协统汽车附件有限公司 | PUR, honeycomb core and co-extrusion plastic plate composite material and production method thereof |
| CN106679297B (en) * | 2017-01-05 | 2019-07-19 | 滁州美业机械制造有限公司 | A kind of refrigerator doors and stamping parts connection structure |
| CN112810116B (en) * | 2020-12-29 | 2023-04-28 | 宁波长阳科技股份有限公司 | Plastic sucking processing method and product |
-
2000
- 2000-08-01 CN CN 00117310 patent/CN1116573C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1336531A (en) | 2002-02-20 |
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