CN100493890C - Refrigerator chamber production method - Google Patents
Refrigerator chamber production method Download PDFInfo
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- CN100493890C CN100493890C CNB2004100519382A CN200410051938A CN100493890C CN 100493890 C CN100493890 C CN 100493890C CN B2004100519382 A CNB2004100519382 A CN B2004100519382A CN 200410051938 A CN200410051938 A CN 200410051938A CN 100493890 C CN100493890 C CN 100493890C
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- cavity
- door
- refrigerator
- mould
- courage
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Abstract
The invention discloses a refrigerator cavity manufacturing method, which comprises the following steps: a) putting material in the die cavity of rotomoulding model; b) placing the model in the rotary heating oven; c) modeling the plastic granulate in the rotomoulding model; d) cooling the rotomoulding model and fetching the hollow plastic cavity after demoulding; e) gutting the hollow plastic cavity into door bladder and box bladder; f) assembling the door bladder and box bladder into door cavity and box cavity; g) injecting bubble into the door cavity and box cavity to form refrigerator box and door. The invention simplifies the plastic uptake craft of refrigerator cavity and improves the productive efficiency, which can be used in types of refrigerator widely.
Description
Technical field
The present invention relates to a kind of refrigerator cavity manufacturing method, more particularly, the present invention relates to comprise the refrigerator cavity making method of the processing method of plastic chambers such as refrigerator inner door or box liner.
Background technology
As everyone knows, the manufacturing process of refrigerator is: a) manufacturing of case courage and door courage → b) casing, the assembling → c) refrigerator foaming → d) general assembly of door body.Wherein, the manufacturing of box liner and inner door mainly is to use plastic material to process, plastic uptake technology commonly used, with sheet material plastic uptake on door courage mould and case courage mould two molds respectively, after the moulding inner bag, door courage edge are carried out punching, corner cut, form the door courage and the case courage of refrigerator, refill and join refrigerator body shell and door body, between inner bag and shell, inject the bubble material, under suitable temperature, pressure condition, be foamed into to having the heat-insulation layer of effect of heat insulation.The assembling of door body is that door face board is placed in the door foaming mould, injects foamed material, buckles an inner bag then, is foamed into to be refrigerator door under suitable temperature, pressure condition.
Adopt the processing method of plastic uptake, the inner bag of processing refrigerator and a door courage will use two molds, and the ABS pellet is extruded into the sheet material of suitable size and thickness, after be placed on preheating on the Packing Machine, mould rises from the bottom, vacuumize, cooling, the demoulding, an inner bag and a courage.To increase the processing step that the waste material at inner bag edge is handled behind the plastic uptake.
Summary of the invention
The technical problem to be solved in the present invention is that the process of change refrigerator body inner bag and inner door provides a kind of manufacture method of saving development cost, the refrigerator door liner of enhancing productivity and case courage.Use this manufacture method can reduce processing mold, simplify moulding process, to overcome the deficiencies in the prior art.
Another object of the present invention provides a kind of manufacture method of integrated refrigerator plastic door body, to simplify the production process of a body, raises the efficiency.
The method that solves the problems of the technologies described above is: a kind of refrigerator cavity manufacturing method is provided, may further comprise the steps:
A) in the die cavity of rotational moulding mould, feed intake;
B) mould after will feeding intake places rotation heating in the heating furnace;
C) the plasticizing forming process of plastic granule in the rotational moulding mould;
D) the hollow plastic chamber is taken out in the cooling of rotational moulding mould and the demoulding;
E) the butt joint applying line of hollow plastic chamber along case courage and door courage dissectd and be door courage and case courage two parts;
F) door courage and case courage are assembled into box cavity and door body cavity;
G) in box cavity that assembles and door body cavity, annotate bubble, be processed into refrigerator body and door body.
In the above-mentioned refrigerator cavity manufacturing method, in the plasticizing process and afterwards rotational moulding mould cooling procedure of plastic granule in the rotational moulding mould, described rotational moulding mould keeps rotation.
In the above-mentioned refrigerator cavity manufacturing method, described rotational moulding mould is along the constantly mutual rotation of horizontal and vertical two vertical axises of mould.
In the above-mentioned refrigerator cavity manufacturing method, the thickness in described hollow plastic chamber is 0.8mm.
The present invention compared with prior art has the following advantages and beneficial effect:
1) in the rotation molding process, except that the effect of natural gravity, be subjected to the effect of any external force hardly, thereby the dynamical system expense reduces; (2) product of rotational molding technique is in entire making process, because internal stress free produces, product quality and structure are more stable; (3) mould of rotational molding technique is easily manufactured, and is cheap; (4) do not have waste material, leftover pieces to produce, do not need the punching edge, do not need corner cut, only need a mold just can produce two products.
Description of drawings
Fig. 1 adopts the refrigerator door liner of rotational molding technique and the one-body molded cavity configuration schematic diagram of case courage for the present invention;
Fig. 2 is for dissecing the refrigerator door liner structural representation behind the one-body molded chamber among the present invention;
Fig. 3 is for dissecing the refrigerator case bladder structure schematic diagram behind the one-body molded chamber among the present invention;
Fig. 4 is the structural representation in integrated plastic door chamber among the present invention.
The specific embodiment
Fig. 1～3 show the structural representation of refrigerator door liner and inner bag one being processed into a hollow plastic cavity with rotational molding technique and door courage and the signal of case bladder structure by hollow cavity dissectd.The technological process of adopting rotational molding technique to make the refrigerator plastic chamber is: a) mould feed intake → semi-finished product of the cooling and demolding of the pellet plasticizing process of b) mould rotation heating → c) → d) → e) dissect and are the casing of door courage and case courage → f), the assembling of door body → g) casing, door foaming.
A) mould feeds intake.PE plastics powder is dropped in the unitary mould chamber by calculating good weight in advance.
B) mould rotation heating.The mould that adds powder is along the constantly mutual rotation of horizontal and vertical two vertical axises of mould and in rotation mould is heated, powder constantly rolls in the heated mold chamber, after heat melt in the plasticizing process and can be evenly distributed in the entire die cavity.
C) powder plasticizing process.Plastics in the mold cavity that rolls under the effect of gravity and heat energy, by → g) casing, door foaming.
A) mould feeds intake.PE plastics powder is dropped in the unitary mould chamber by calculating good weight in advance.
B) mould rotation heating.The mould that adds powder is along the constantly mutual rotation of horizontal and vertical two vertical axises of mould and in rotation mould is heated, powder constantly rolls in the heated mold chamber, after heat melt in the plasticizing process and can be evenly distributed in the entire die cavity.
C) powder plasticizing process.Plastics in the mold cavity that rolls are under the effect of gravity and heat energy, and coating, fusion adhere on the whole surface of die cavity equably gradually.In this process, if inner container of icebox and door courage need adopt multilayer unlike material structure or with many matter of material structure, reach under the uniform state of fusion at the ground floor plastics, substantially cool off behind the solid type plastic in the mold cavities such as mold cools down reinforced to mold cavity again, to mould rotation heating, make the fusion of second layer plastic uniform, repeated multiple times like this, the airtight plastic chamber of a sandwich construction of formation.In whole process, mould and mould bases stand heating, cooling repeatedly, experience the intensification and the temperature-fall period of big spoke degree.
D) cooling and demolding.After powder plasticizing process operation, with the mode of cooling water or blowing mold cools down material in mould can not be flowed, in whole cooling procedure, the rotational moulding mould all keeps the rotation of rolling.The semi-finished product of plastic chamber are taken out in the cooling back demoulding, consider the heat-conductive characteristic of casing when refrigerator freezes and the processing characteristics of rotational molding technique, and the thickness of this plastic chamber is adapted between 0.5～1mm, and optimum value is 0.8mm.Label 1 expression case courage among Fig. 1, label 2 expression door courages, case courage and the open butt joint of door courage.
E) semi-finished product dissect and are door courage and case courage.The semi-finished product plastic chamber that takes out in the rotational moulding mould die cavity is the sealed hollow cavity that is combined into by case courage 1 and 2 butt joints of door courage, hollow cavity is placed on (as special fixture) on the special equipment cuts along the butt joint applying line 3 of case courage and door courage, case courage 1 and door courage 2 are separately.Fig. 2 and Fig. 3 show the case courage 1 after cutting open and the structure of door courage 2 respectively.
F) casing, the assembling of door body.An assembling refrigerator body shell and a door body on the door courage 2 of refrigerator and case courage 1, and reserve necessary electrical accessorie, a refrigeration device in that casing and door body are inner.
G) casing, door foaming.The casing and the door body that assemble are inserted in the foaming mould, inject and send out the foam material foaming, the process conditions of foaming are identical with foam process of the prior art, are not described in detail in this.
The process of the present invention except providing one once refrigerator door liner and case courage to be processed can also provide a method that once whole door body chamber shell is processed with rotational molding technique.The core of this method is to utilize the characteristics of the suitable formation hollow cavity of rotational molding technique, and door courage, the shell one of door body processed by rotational moulding, forms the door body of an overall plastic structure, has reduced the cumbersome technology of present door body assembling, improves the production efficiency of refrigerator.The concrete steps of this method comprise:
A) mould feeds intake.Plastic granule drops in the unitary mould chamber by calculating good weight in advance.
B) mould rotation heating.Charged mould is sent into heating furnace, and heating-up temperature is more than 260 ℃, the heating while rotating, pellet constantly rolls in the heated mold chamber, after heat melt in the plasticizing process and can be evenly distributed in the entire die cavity.
C) pellet plasticizing process.When material was heated to necessary requirement in the mould, pellet constantly rolled in the heated mold chamber, after heat melt in the plasticizing process and can be evenly distributed in the entire die cavity.Plastics in the mould are under the effect of gravity and heat energy, and coating, fusion adhere on the whole surface of die cavity equably gradually.
D) cooling and demolding.After pellet plasticizing process operation, make the mould cooling while rotating, the method for cooling to the mould air blast of rotating or with cool water shower on the mold cavity outer surface, when treating that material loses flowability, stop operating, open mould, a taking-up body cavity.
E) cut the hole.See Fig. 4, take out a door body cavity 4 in the door chamber rotational moulding die cavity, and place on the anchor clamps fixingly, locate the notes abscess 5 of an about 30mm of diameter of punching at the middle part, the back side of door body cavity (or bottom margin of door body cavity).
F) door foaming.The door body cavity of hollow is placed in the door foaming mould, injects suitable bubble material to the hollow-core door body cavity from annotate abscess, the process conditions of foaming are identical with foam process of the prior art, are not described in detail in this.
In the rotational molding technique of above-mentioned refrigerator plastic chamber, its main feature is that whole rolling plastic pellet evenly distributes in die cavity, and integral wall is altogether unjustifiable evenly normal.Compare with existing plastic uptake technology, for some are easier to occur substandard products such as the attenuation of part position, distortion as narrow raised line, turning etc. at application plastic uptake technology time ratio on case courage and the door courage, use rotational molding technique and can stop this shortcoming, and make only need one mold of door courage and case courage, reduced by a cover than plastic uptake technology, tool has great advantage on cost.The refrigerator cavity of rotational moulding processing does not have leftover bits, can save the operation that leftover bits are handled again.In general, though the present invention than the refrigerator cavity that utilizes the plastic uptake processes to come out in the prior art on the cost, raise the efficiency and all have obvious improvement, for the manufacture method of refrigerator augments a feasible selection again.
Claims (5)
1. refrigerator cavity manufacturing method is characterized in that may further comprise the steps:
A) in the die cavity of rotational moulding mould, feed intake;
B) mould after will feeding intake places rotation heating in the heating furnace;
C) the plasticizing forming process of plastic granule in the rotational moulding mould;
D) the hollow plastic chamber is taken out in the cooling of rotational moulding mould and the demoulding;
E) the butt joint applying line of hollow plastic chamber along case courage and door courage dissectd and be door courage and case courage two parts;
F) door courage and case courage are assembled into box cavity and door body cavity;
G) in box cavity that assembles and door body cavity, annotate bubble, be processed into refrigerator body and door body.
2. refrigerator cavity manufacturing method according to claim 1 is characterized in that: in the plasticizing process and afterwards rotational moulding mould cooling procedure of plastic granule in the rotational moulding mould, described rotational moulding mould keeps rotation.
3. refrigerator cavity manufacturing method according to claim 2 is characterized in that: described rotational moulding mould is along the constantly mutual rotation of horizontal and vertical two vertical axises of mould.
4. according to claim 1 or 2 or 3 described refrigerator cavity manufacturing method, it is characterized in that: the thickness in described hollow plastic chamber is 0.5～1mm.
5. refrigerator cavity manufacturing method according to claim 4 is characterized in that; The thickness in described hollow plastic chamber is 0.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100519382A CN100493890C (en) | 2004-10-20 | 2004-10-20 | Refrigerator chamber production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100519382A CN100493890C (en) | 2004-10-20 | 2004-10-20 | Refrigerator chamber production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1762684A CN1762684A (en) | 2006-04-26 |
| CN100493890C true CN100493890C (en) | 2009-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100519382A Expired - Fee Related CN100493890C (en) | 2004-10-20 | 2004-10-20 | Refrigerator chamber production method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITRN20100016A1 (en) * | 2010-04-08 | 2011-10-09 | Indesit Co Spa | PRODUCTION METHOD OF A REFRIGERATING CELL AND REFRIGERATION DEVICE INCLUDING THE REFRIGERATED CELL |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100761155B1 (en) * | 2006-04-28 | 2007-10-04 | 엘지전자 주식회사 | Inner case for a kim-chi refrigerator |
| CN102494488A (en) * | 2011-12-12 | 2012-06-13 | 合肥美的荣事达电冰箱有限公司 | Door body and refrigerator with door body |
| CN103913037A (en) * | 2013-01-08 | 2014-07-09 | 海尔集团公司 | Heat preservation component and forming method thereof |
| CN106091555A (en) * | 2016-06-08 | 2016-11-09 | 台州市美利乐制冷设备有限公司 | A kind of housing of vehicle-mounted refrigerator |
| CN106979655A (en) * | 2017-03-21 | 2017-07-25 | 合肥华凌股份有限公司 | Refrigerator body and its manufacture method, refrigerator |
| CN108381837B (en) * | 2018-02-24 | 2021-07-20 | 烟台方大滚塑有限公司 | Small container structure, box body processing mold, system and method |
-
2004
- 2004-10-20 CN CNB2004100519382A patent/CN100493890C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITRN20100016A1 (en) * | 2010-04-08 | 2011-10-09 | Indesit Co Spa | PRODUCTION METHOD OF A REFRIGERATING CELL AND REFRIGERATION DEVICE INCLUDING THE REFRIGERATED CELL |
| EP2375202A1 (en) * | 2010-04-08 | 2011-10-12 | Indesit Company S.p.A. | Method for making a refrigerating cell and refrigerating device comprising the refrigerating cell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1762684A (en) | 2006-04-26 |
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Granted publication date: 20090603 Termination date: 20111020 |