CN106808646A - Perforated plastic part and its forming method and cooking appliance - Google Patents
Perforated plastic part and its forming method and cooking appliance Download PDFInfo
- Publication number
- CN106808646A CN106808646A CN201510873902.0A CN201510873902A CN106808646A CN 106808646 A CN106808646 A CN 106808646A CN 201510873902 A CN201510873902 A CN 201510873902A CN 106808646 A CN106808646 A CN 106808646A
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- Prior art keywords
- plastic part
- perforated plastic
- glue
- laminar
- melt
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
- A47J36/04—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay the materials being non-metallic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
- B29C45/0055—Shaping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
- B29C45/0055—Shaping
- B29C2045/0058—Shaping removing material
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a kind of perforated plastic part and its forming method and cooking appliance.The forming method of the perforated plastic part includes：Injection moulding, is provided with the laminar glue position corresponding with hole to be formed in mold cavity, and melt is flow in laminar glue position after injection melt, and the melt in laminar glue position forms the thin slice waste material being integrated with perforated plastic part；Excision waste material, using cutting system excision thin slice waste material in mould, obtains one-time formed perforated plastic part.The forming method of the perforated plastic part that the present invention is provided, using the injection molding for being provided with mold cavity the laminar glue position corresponding with hole to be formed, in filling melt die cavity, laminar glue position plays drainage, avoid or mitigate the shunting because occurring in filling melt when product has hole, and then eliminate or desalination weld mark, it is to avoid strength retrogression and aberration are bad at weld mark；After the completion of injection, thin slice waste material is cut off using cutting system in mould automatically, obtain one-shot forming product, improve production efficiency.
Description
Technical field
The present invention relates to injection molding technology field, more specifically, it is related to a kind of shaping of perforated plastic part
Method, the perforated plastic part being made of the forming method and the cooking appliance with the perforated plastic part.
Background technology
In product structure design, because structure needs, there is through hole, hole on working of plastics, working of plastics is in injection
Shunting, interflow are produced during shaping, when causing melt to be filled in mold cavity, and then in the working of plastics of shaping
Upper formation weld mark.Weld mark is a region, and the field strength is low, be easily caused working of plastics cracking, and molten
With working of plastics ontological existence aberration at lapping defect, working of plastics outward appearance is influenceed.
In product design or manufacture, to obtain specific surface effect, form bloom, pearly-lustre, imitate
Spraying, imitative metallic surface aesthetic effect, are often sprayed working of plastics to realize to weld mark and surface colour
Difference is covered, and is whitewashed, but derivative problems after spraying, such as product cost increase, production cycle
Extension, quality management and control difficulty are increased, processing procedure is unfriendly, water/gas environmental pollution.To solve problem above,
Industry starts, using spraying method is exempted from, to imitate painted plastic part with injection molding, but how to improve moulding
The surface tactile sensation of imitative sprayed coating, and cause not form weld mark on hole, the working of plastics of hole structure,
It is the difficult point and focus of current plastics and its shaping industry research.
For the moulding for forming hole, hole architectural feature, weld mark generally existing, when using exempting from spraying modeling
During material injection, due to the addition of particular fillers in resin, relative to common plasticses, the weld mark of formation is more
Seriously.
In correlation technique, working of plastics weld mark solution is existing：A) retain, do not process, b) outside
Thing is covered or covered up, c) optimized by material improvement and/or mould, structure partial realize weld mark desalinate or
Weld mark position is moved into specific place.These solutions are the subsequent treatments for having formed weld mark, or
Cover or desalination or change position, be not reaching to be inherently eliminated the purpose of weld mark, it is used as one
Kind of flaw and bad, still objective reality.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art.
Therefore, the purpose of one aspect of the present invention is, there is provided one kind can eliminate weld mark, and
Moulding process is simple, be capable of achieving the forming method of one-time formed perforated plastic part.
The purpose of another aspect of the present invention is, there is provided a kind of shaping using above-mentioned perforated plastic part
The perforated plastic part that method is made.
The purpose of another aspect of the invention is, there is provided a kind of with the above-mentioned culinary art electricity for treating hole working of plastics
Device.
To achieve the above object, the embodiment of one aspect of the present invention provides a kind of perforated plastic part
Forming method, including：Step 101：Injection moulding, is provided with corresponding with hole to be formed in mold cavity
Laminar glue position, melt is flow in the laminar glue position after injection melt, in the laminar glue position
Melt forms the thin slice waste material being integrated with the perforated plastic part；With step 102：Excision waste material, uses
Cutting system cuts off the thin slice waste material in mould, obtains the one-time formed perforated plastic part.
The forming method of the perforated plastic part that the above embodiment of the present invention is provided, is provided with and treats in mold cavity
The corresponding laminar glue position of forming hole, is so injected into the melt in mold cavity, in the stream of filling die cavity
During dynamic, laminar glue position is flow in laminar glue position and fills, so that perforated plastic part and flake
Thin slice waste material in glue position is connected as a single entity；Laminar glue position plays drainage so that melt is in filling die cavity
Flow process in do not shunt, enter the condition that weld mark is produced without possessing, thus eliminate weld mark,
So that there is no aberration using painted plastic part product surface is exempted from, it is to avoid cause because of the presence of weld mark with holes
The local strength of working of plastics product weld mark is low, bad order the problems such as；After the completion of injection, using in mould
Cutting system cuts off the thin slice waste material that the melt in laminar glue position is formed automatically, and ejection is obtained without useless after die sinking
Material, the perforated plastic part of weldless trace.No waste mine, weldless trace and table can be obtained using one-shot forming mode
The perforated plastic part of pale face difference, eliminates weld mark, thus need not be covered by spraying weld mark and
Surface chromatic aberration, the moulding process is simple, it is not necessary to which secondary operation cuts off laminar waste material, reduces operation,
Production efficiency is improve, production cost is reduced.
Specifically, the painted plastic part of exempting from refers to imitate spraying or the moulding with metal aesthetic effect.
Due to the addition of particular fillers in the resin for exempting from painted plastic, cause it relative to common plasticses, formation it is molten
Lapping defect becomes apparent, so that moulding cannot improve surface tactile sensation while eliminating weld mark；And use above-mentioned
What forming method was made exempts from painted plastic part, has both enhanced and has exempted from painted plastic part surface tactile sensation, and effectively eliminates
Weld mark, and then effectively improve and exempt to spray moulding quality and superficial aesthetic effect.
It should be noted that can be according to reasonable sets such as the shape in specific working of plastics and its hole to be formed, sizes
The shape and size of laminar glue position, are easy to play the drainage of laminar glue position, and make cutting knife smooth
By the excision of thin slice waste material.
In addition, the forming method of the perforated plastic part of the above embodiment of the present invention offer also has following adding
Technical characteristic：
According to one embodiment of present invention, in the step 102, cutting system includes cutting in the mould
Knife and the controller of the control cutting knife action, the controller are cut according to default control program is controlled
Knife is acted and cuts off the thin slice waste material.
In above-described embodiment, control cutting knife to act using controller, realize the automation excision of thin slice waste material,
Improve the stability and production efficiency of working of plastics quality；And can be moulded according to spraying is exempted from during die trial
The material property of materials and parts, geomery and/or melt fill type duration etc. debug cutting knife opening time and
Duration is opened, with while thin slice waste material is cut off, it is to avoid such as crackle, burr defect are produced, so as to protect
The superperformance of the product that card is molded；And can be by the default control program input controller, so that real
Convenience and precise control that existing controller is acted to cutting knife, are easy to mass production.
According to one embodiment of present invention, the perforated plastic part has a hole to be formed, institute
It is cutting system in single hole mould to state cutting system in mould, and cutting system is to be formed with described with one in the single hole mould
The cutting knife that the shape in hole is adapted.
According to one embodiment of present invention, one is provided with the mold cavity and enters glue point, it is described enter glue point
In the laminar glue position, the thin slice waste material and material head are formed with the laminar glue position；Or,
One is provided with the mold cavity and enters glue point, it is described enter glue point to be located at the laminar glue position outer, with institute
State and form the thin slice waste material at laminar glue position, it is described enter glue point at form material head.
In above-described embodiment, for need one hole of shaping exempt from painted plastic part for, can will enter glue point and set
In laminar glue position, can will also enter glue point and be located at outside laminar glue position, for example, for hole to be formed
The situation in the centre of perforated plastic part is located at, can will be entered glue point and be located in laminar glue position so that injection
The material head of shaping is integrated with thin slice waste material, is easy to processing；For hole to be formed be located at perforated plastic part it is non-in
The situation of center portion position, can will enter glue point and be located at outside laminar glue position, after injection moulding, flake be cut off respectively
Thin slice waste material and the material head entered at glue point at glue position, obtain the working of plastics finished product with holes, hole of weldless trace.
According to one embodiment of present invention, the perforated plastic part has multiple holes to be formed, institute
It is cutting system in multiple-hole die to state cutting system in mould, and there is cutting system multiple to be treated with described respectively in the multiple-hole die
The cutting knife that the shape of forming hole is adapted.
In above-described embodiment, for needing the perforated plastic part in the multiple holes of shaping, can be set in mould
Multiple cutting knifes corresponding with multiple holes to be formed respectively, so that melt leads to after the completion of filling hole, hole
Cross the multiple cutting knifes of control to act to cut off the melt in multiple holes to be formed at the same time or separately, obtain weldless
It is trace, one-time formed with porous, hole feature perforated plastic part finished product.
According to one embodiment of present invention, in the step 101, one is provided with the mold cavity
It is individual enter glue point, it is described enter glue point at inject melt after, the melt flow to and multiple hole to be formed
In the one corresponding multiple laminar glue position.
In above-described embodiment, for needing the perforated plastic part in the multiple holes of shaping, can only set one and enter
Glue point, and enter glue point and may be provided in corresponding with one of them hole to be formed laminar glue position, may be alternatively provided at
Laminar glue position is outer, is located at when in laminar glue position for entering glue point, in injection process, melt according to
Multiple flake glue position in secondary filling mold cavity so that the melt in laminar glue position is linked as with working of plastics
Integrally, it is to avoid the melt in filling process at hole to be formed first shunts the weld mark for confluxing and producing again.
In actual production, can according to the size and location in the concrete shape of working of plastics and hole to be formed, exempt from sprayed on material
The factor such as mobility select that glue point position will be entered, entering glue point be able to can also treat into hole to be formed
Outside type hole.
According to one embodiment of present invention, in the step 101, it is provided with many in the mold cavity
It is individual enter glue point, enter glue point described in multiple and enter glue according to sequential, and according to melt by it is previous it is described enter glue point flow to
It is latter it is described enter glue point duration, set latter it is described enter glue point start into the glue time.
In above-described embodiment, for needing the perforated plastic part in the multiple holes of shaping, settable multiple enters glue
Point, and multiple enters glue point and can be respectively positioned in laminar glue position, can also be positioned partially or entirely in laminar glue position
Outward, and multiple enters glue point and enters glue using sequential, i.e., by it is previous enter the melt that flows into of glue point fill to specifying
During position, open it is latter enter glue point, and can now turn down it is previous enter the entering glue amount or close of glue point before
One is entered glue point, so higher due to entering the melt temperature that glue point flows into from latter, its with it is previous enter
When the melt that glue point is flowed into converges, weld mark will not be produced, the effect of weld mark is eliminated so as to reach.
According to one embodiment of present invention, it is described thin in multiple according to melt in the step 102
Filling in sheet glue position completes sequential, sets and control multiple cutting knifes to be acted according to sequential；Or, according to
Melt is stuffed entirely with the duration for completing in the multiple laminar glue position, sets and control multiple cutting knifes
Act simultaneously.
In above-described embodiment, because the time that melt is flow in each laminar glue position is different, therefore can be according to molten
Expect that the filling in multiple flake glue positions controls cutting knife sequentially to open according to sequential, with each laminar glue position
Melt cut off when reaching optimal excision state, it is to avoid the generation of the defect such as crackle, burr；Certainly,
Also after the completion of melt is stuffed entirely with multiple flake glue positions, then cutting knife unlatching can be controlled to come while cutting off
Melt in multiple flake glue positions, so as to be formed without thin slice waste material, weldless trace and meet design requirement
Exempt from painted plastic part finished product；And can be according to the thickness of melt in the shapes and sizes in hole to be formed, hole to be formed
The factors such as degree control the lasting unlatching duration of multiple cutting knifes, and the unlatching duration of multiple cutting knifes can be with identical
Can be with difference, within protection scope of the present invention.
According to one embodiment of present invention, step 103 is also included after the step 102：Reset
The cutting knife；Step 104：Die sinking, by cutting after the perforated plastic part and the thin slice waste material ejection.
According to one embodiment of present invention, the injection material of the perforated plastic part includes resin and its is modified
Material；Wherein, the resin includes PP (polypropylene), ABS (acrylonitrile-butadiene-styrene (ABS)), PC
(makrolon), PMMA (polymethyl methacrylate), PS (polystyrene), PA (polyamide)
In one or more.
In above-described embodiment, the material of perforated plastic part can be any of the above-described kind or appoint several thermoplasticity to mould
Material, and various color stuffings can be added in above-mentioned plastic substrate or is had special-effect filler, or is imitated
Spraying, the modified materials of imitative metal aesthetic effect, have imitative spraying and/or imitative metal aesthetics effect to form surface
Fruit exempts from painted plastic product, meets different demands.
According to one embodiment of present invention, the thickness of the thin slice waste material is 0.5mm~4mm.Specifically
Ground, the thickness of thin slice waste material can be 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm or
4mm, the situation of the thickness less than 0.5mm of thin slice waste material reduces the melt and plastics in laminar glue position
The mobility of melt between part, reduces shaping speed, while hardening by cooling is fast, is unfavorable for cutting, has an effect on into
The plastic part surface finish of type；When the thickness of thin slice waste material is more than 4mm, then the longevity of removal tool is influenceed
Life, and the kerf quality in excision face is also reduced, it is easily caused serious tool marks and burr.
The embodiment of another aspect of the present invention provides a kind of perforated plastic part, lives electric for family expenses
On device product, especially cooking appliance, using the shaping side of the perforated plastic part described in any of the above-described embodiment
Method is made.
The perforated plastic part can be electric cooker, electric pressure cooking saucepan, bread producing machine, electromagnetic oven, Garment Steamer Machine, decoct
Burn-in, soy bean milk making machine, kettle, the various working of plastics containing ornamental effect of water dispenser, such as cover, panel,
The parts such as cosmetic sheet, shell, base.
The embodiment of another aspect of the invention provides a kind of cooking appliance, with housing, on the housing
With perforated plastic part, the perforated plastic part using the perforated plastic part described in any of the above-described embodiment into
Type method is made.
Additional aspect of the invention and advantage will become obvious in following description section, or by this
The practice of invention is recognized.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage are from description of the accompanying drawings below to embodiment is combined
Will be apparent and be readily appreciated that, wherein：
Fig. 1 is the schematic flow sheet of the forming method of the perforated plastic part described in one embodiment of the invention；
Fig. 2 is the overlooking the structure diagram of the perforated plastic part described in one embodiment of the invention；
Fig. 3 is the present invention looks up structural representation of perforated plastic part shown in Fig. 2.
Wherein, the corresponding relation in Fig. 2 and Fig. 3 between reference and component names is：
1 perforated plastic part, 2 holes to be formed.
Specific embodiment
In order to be more clearly understood that the above objects, features and advantages of the present invention, with reference to attached
Figure and specific embodiment are further described in detail to the present invention.It should be noted that not
In the case of conflict, the feature in embodiments herein and embodiment can be mutually combined.
Many details are elaborated in the following description in order to fully understand the present invention, but,
The present invention can also be different from mode described here to implement using other, therefore, guarantor of the invention
Shield scope is not limited by following public specific embodiment.
Describe with reference to the accompanying drawings perforated plastic part according to some embodiments of the invention forming method and
Perforated plastic part and cooking appliance.
As shown in figure 1, a kind of shaping side of the perforated plastic part for providing according to some embodiments of the invention
Method, comprises the following steps：
Step 101：Injection moulding, is provided with the laminar glue corresponding with hole to be formed 2 in mold cavity
Position, melt is flow in the laminar glue position after injection melt, the melt in the laminar glue position formed with
The thin slice waste material that the perforated plastic part 1 is integrated；
Step 102：Excision waste material, the thin slice waste material is cut off using cutting system in mould, obtains one-shot forming
The perforated plastic part 1；
Step 103：Reset the cutting knife；
Step 104：Die sinking, by cutting after the perforated plastic part 1 and the thin slice waste material ejection.
The forming method of the perforated plastic part that the above embodiment of the present invention is provided, is provided with and treats in mold cavity
The corresponding laminar glue position of forming hole, is so injected into the melt in mold cavity, in the stream of filling die cavity
During dynamic, laminar glue position is flow in laminar glue position and fills, so that perforated plastic part and flake
Thin slice waste material in glue position is connected as a single entity, and laminar glue position plays drainage so that melt is in filling die cavity
Flow process in do not shunt, enter the condition that weld mark is produced without possessing, thus completely eliminate molten
Lapping defect so that do not have aberration using exempting from painted plastic part product surface, it is to avoid led because of the presence of weld mark
The problems such as causing low perforated plastic part product local strength, bad order；After the completion of injection, using mould inscribe
System cuts off the thin slice waste material that the melt in laminar glue position is formed automatically, after die sinking ejection obtain no waste mine,
The perforated plastic part of weldless trace, i.e., using one-shot forming mode can obtain no waste mine, weldless trace and surface without
The perforated plastic part of aberration, eliminates weld mark, therefore weld mark and surface need not be covered by spraying
Aberration, the moulding process is simple, it is not necessary to which secondary operation cuts off laminar waste material, reduces operation, carries
Production efficiency high, reduces production cost.
In some embodiments of the present invention, in the step 102, cutting system includes cutting knife in the mould
With the controller for controlling the cutting knife to act, the controller is according to the default control program control cutting knife
Act and cut off the thin slice waste material.
Control cutting knife to act using controller, realize the automation excision of thin slice waste material, improve working of plastics
The stability and production efficiency of quality；And material property that can be during die trial according to perforated plastic part,
Geomery and/or melt fill type duration etc. to debug the opening time of cutting knife and open duration, to cut
While except thin slice waste material, it is to avoid produce such as crackle, burr defect, so that the product for ensureing to mold
Superperformance；And can be by the default control program input controller, so as to realize that controller is dynamic to cutting knife
The convenience and precise control of work, are easy to mass production.
In one embodiment of the present of invention, as shown in Figures 2 and 3, the perforated plastic part 1 has one
The individual hole to be formed 2, cutting system is cutting system, cutting system in the single hole mould in single hole mould in the mould
With a cutting knife being adapted with the shape in the hole to be formed 2.
In a specific embodiment of the invention, one is provided with the mold cavity and enters glue point, it is described enter glue
Point is located in the laminar glue position, and the thin slice waste material and material head are formed with the laminar glue position.
In another specific embodiment of the invention, one is provided with the mold cavity and enters glue point, it is described enter
Glue point is located at outside the laminar glue position, the thin slice waste material is formed with the laminar glue position, in institute
State the formation material head at glue point.
For needing one perforated plastic part in hole of shaping, can will enter glue point and be arranged on laminar glue position
It is interior, can will also enter glue point and be located at outside laminar glue position, for example, perforated plastic is located at for hole to be formed
The situation in the centre of part, can will enter glue point and be located in laminar glue position so that the material head of injection moulding with
Thin slice waste material is integrated, and is easy to processing；For the feelings at non-central position that hole to be formed is located at perforated plastic part
Condition, can will enter glue point and be located at outside laminar glue position, after injection moulding, cut off thin at laminar glue position respectively
Sheet waste material and the material head entered at glue point, obtain the working of plastics finished product with holes, hole of weldless trace.
In an alternative embodiment of the invention, the perforated plastic part 1 has multiple holes to be formed 2,
Cutting system is cutting system in multiple-hole die in the mould, in the multiple-hole die cutting system have it is multiple respectively with it is described
The cutting knife that the shape in hole to be formed 2 is adapted.
For needing the perforated plastic part in the multiple holes of shaping, can be set in mould multiple respectively with multiple
The corresponding cutting knife in hole to be formed, so that in melt after the completion of hole is filled, by controlling multiple cutting knifes same
When or act cut off the melt in multiple holes to be formed respectively, obtain weldless trace, one-time formed band many
The perforated plastic part finished product of hole characteristic.
In a specific embodiment of the invention, in the step 101, it is provided with the mold cavity
One is entered glue point, it is described enter glue point at inject melt after, the melt flow to and multiple hole to be formed
In 2 one-to-one multiple laminar glue positions.
For needing the perforated plastic part in the multiple holes of shaping, can only set one and enter glue point, and enter glue point
May be provided in the laminar glue position corresponding with one of them hole to be formed, may be alternatively provided at outside laminar glue position,
When being located in laminar glue position for entering glue point, in injection process, melt is sequentially filled mold cavity
At interior multiple flake glue position so that the melt in laminar glue position is connected as a single entity with working of plastics, it is to avoid fill out
Melt during filling at hole to be formed first shunts the weld mark for confluxing and producing again.In actual production, can
The size and location of concrete shape and hole to be formed according to working of plastics, the mobility for exempting from sprayed on material etc. because
Element selects that glue point position will be entered, and entering glue point can be in hole to be formed, also can be outside hole to be formed.
In another specific embodiment of the invention, in the step 101, set in the mold cavity
There is multiple to enter glue point, glue point entered described in multiple and enters glue according to sequential, and according to melt by it is previous it is described enter glue point
Flow to it is latter it is described enter glue point duration, set latter it is described enter glue point start into the glue time.
In above-described embodiment, for needing the perforated plastic part in the multiple holes of shaping, settable multiple enters glue
Point, and multiple enters glue point and can be respectively positioned in laminar glue position, can also be positioned partially or entirely in laminar glue position
Outward, and multiple enters glue point and enters glue using sequential, i.e., by it is previous enter the melt that flows into of glue point fill to specifying
During position, open it is latter enter glue point, and can now turn down it is previous enter the entering glue amount or close of glue point before
One is entered glue point, so higher due to entering the melt temperature that glue point flows into from latter, its with it is previous enter
When the melt that glue point is flowed into converges, weld mark will not be produced, the effect of weld mark is eliminated so as to reach.
Further, in the step 102, according to filling of the melt in the multiple laminar glue position
Sequential is completed, sets and control multiple cutting knifes to be acted according to sequential；Or,
In the step 102, according to melt be stuffed entirely with the multiple laminar glue position completion when
It is long, set and control multiple cutting knifes to act simultaneously.
In above-described embodiment, because the time that melt is flow in each laminar glue position is different, therefore can be according to molten
Expect the filling sequential in multiple flake glue positions to control cutting knife sequentially to open, with each laminar glue position
Melt is cut off when reaching optimal excision state, it is to avoid the generation of the defect such as crackle, burr；Certainly,
Also after the completion of melt is stuffed entirely with multiple flake glue positions, then cutting knife unlatching can be controlled to come while cutting off
Melt in multiple flake glue positions, so as to be formed without thin slice waste material, weldless trace and meet design requirement
Exempt from painted plastic part finished product；And can be according to the thickness of melt in the shapes and sizes in hole to be formed, hole to be formed
The factors such as degree control the lasting unlatching duration of multiple cutting knifes, and the unlatching duration of multiple cutting knifes can be with identical
Can be with difference, within protection scope of the present invention.
In some embodiments of the present invention, the injection molding material of the perforated plastic part 1 includes resin and its is modified
Material；Wherein, the resin includes one or more in PP, ABS, PC, PMMA, PS, PA.
In above-described embodiment, the material of perforated plastic part can be any of the above-described kind or appoint several thermoplasticity to mould
Material, and various color stuffings can be added in above-mentioned plastic substrate or have special-effect filler, or
Imitative spraying, the modified materials of imitative metal aesthetic effect, such as China Patent Publication No. CN103242619A are public
It is material modified that the luster, high-hardness and high opened exempts from spraying ABS plastic, has imitative spraying and/or imitative to form surface
Metal aesthetic effect exempts from painted plastic product, meets different demands.
According to one embodiment of present invention, the thickness of the thin slice waste material is in 0.5mm~4mm.Specifically
Ground, the thickness of thin slice waste material is selected with the thickness of perforated plastic part 2 by positive correlation, can be specifically
0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm or 4mm, or 0.5mm~4mm
In the range of other numerical value because situation of the thickness of thin slice waste material less than 0.5mm, reduces laminar glue
The mobility of melt, reduces shaping speed between the melt and working of plastics in position, also results in quick cooling and is hardened,
It is unfavorable for cutting, has an effect on the plastic part surface finish of shaping；When the thick baselap of thin slice waste material crosses 4mm,
Removal tool feed stroke is then influenceed, increases feed path increment, while excessively slow also influence feed of cooling velocity etc.
Treat the time, and also reduce the kerf quality in excision face, serious tool marks and burr is easily caused, in this example
The thickness of thin slice waste material is 1.5mm.
The embodiment of another aspect of the present invention provides a kind of perforated plastic part 1, such as Fig. 2 and Fig. 3
Shown, the perforated plastic part is the structural representation for the cover cosmetic sheet on cooking appliance, the band
Hole working of plastics is made of the forming method of the perforated plastic part described in any of the above-described embodiment, the modeling with holes
Materials and parts have the advantages that weldless trace, appearance be good, high mechanical strength.
The perforated plastic part can also be electric cooker, electric pressure cooking saucepan, bread producing machine, electromagnetic oven, Garment Steamer Machine,
Decoct the various working of plastics containing ornamental effect of burn-in, soy bean milk making machine, kettle, water dispenser, such as cover, face
The parts such as plate, cosmetic sheet, shell, base.
The embodiment of another aspect of the invention provides a kind of cooking appliance (not shown), described
Cooking appliance has housing, has perforated plastic part on the housing, and the perforated plastic part uses above-mentioned
The forming method of the perforated plastic part described in one embodiment is made.
In sum, the forming method of perforated plastic part provided in an embodiment of the present invention, using in mold cavity
The injection molding plus the molding mode of mould inscribe of the laminar glue position corresponding with hole to be formed are inside provided with,
So that being the perforated plastic part that can obtain no waste mine, weldless trace using one-shot forming, U.S. of product is improve
The property seen, it is to avoid perforated plastic part product is because local strength is low caused by the presence of weld mark, bad order
The problems such as, so that the plastic product being made has surface tactile sensation and appearance, and moulding process letter concurrently
It is single, it is not necessary to which that secondary operation cuts off thin slice waste material, improves production efficiency.
In the description of the invention, term " multiple " refers to two or more.
In the description of this specification, term " one embodiment ", " some embodiments ", " specific embodiment "
Deng description mean that the specific features described with reference to the embodiment or example, structure, material or feature are contained in
In at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term
It is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or spy
Point can in an appropriate manner be combined in one or more any embodiments or example.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for ability
For the technical staff in domain, the present invention can have various modifications and variations.It is all in the spirit and principles in the present invention
Within, any modification, equivalent substitution and improvements made etc., should be included in protection scope of the present invention it
It is interior.
Claims (12)
1. a kind of forming method of perforated plastic part, it is characterised in that including：
Step 101：Injection moulding, is provided with the laminar glue position corresponding with hole to be formed in mold cavity,
Melt is flow in the laminar glue position after injection melt, the melt in the laminar glue position formed with it is described
The thin slice waste material that perforated plastic part is integrated；With
Step 102：Excision waste material, the thin slice waste material is cut off using cutting system in mould, obtains one-shot forming
The perforated plastic part.
2. the forming method of perforated plastic part according to claim 1, it is characterised in that
In the step 102, cutting system includes the control of cutting knife and the control cutting knife action in the mould
Device, the controller controls the cutting knife to act and cut off the thin slice waste material according to default control program.
3. the forming method of perforated plastic part according to claim 2, it is characterised in that
The perforated plastic part has a hole to be formed, and cutting system is single hole mould inscribe system in the mould
System, cutting system has a cutting knife being adapted with the shape in the hole to be formed in the single hole mould.
4. the forming method of perforated plastic part according to claim 3, it is characterised in that
One is provided with the mold cavity and enters glue point, it is described enter glue point be located in the laminar glue position, with
The thin slice waste material and material head are formed at the laminar glue position；Or
One is provided with the mold cavity and enters glue point, it is described enter glue point to be located at the laminar glue position outer, with
Form the thin slice waste material at the laminar glue position, it is described enter glue point at formed material head.
5. the forming method of perforated plastic part according to claim 2, it is characterised in that
The working of plastics has multiple holes to be formed, and cutting system is cutting system in multiple-hole die in the mould,
Cutting system has multiple cutting knifes being adapted with the shape in the hole to be formed respectively in the multiple-hole die.
6. the forming method of perforated plastic part according to claim 5, it is characterised in that
In the step 101, one is provided with the mold cavity and enters glue point, it is described enter glue point at note
After penetrating melt, the melt flow to multiple laminar glue positions one-to-one with the multiple hole to be formed
It is interior；Or
In the step 101, multiple is provided with the mold cavity and enters glue point, enter described in multiple glue point according to
Sequential enters glue, and according to melt by it is previous it is described enter glue point flow to latter described in enter the duration of glue point, if
Fixed latter it is described enter glue point start into the glue time.
7. the forming method of perforated plastic part according to claim 5, it is characterised in that
In the step 102, sequential is completed according to filling of the melt in the multiple laminar glue position,
Set and control multiple cutting knifes to be acted according to sequential；Or,
In the step 102, according to melt be stuffed entirely with the multiple laminar glue position completion when
It is long, set and control multiple cutting knifes to act simultaneously.
8. the forming method of perforated plastic part according to any one of claim 1 to 7, its feature
It is also to include after the step 102：
Step 103：Reset the cutting knife；
Step 104：Die sinking, by cutting after the perforated plastic part and the thin slice waste material ejection.
9. the forming method of perforated plastic part according to any one of claim 1 to 7, its feature
It is,
The injection material of the perforated plastic part includes resin and its modified materials；
Wherein, the resin includes one or more in PP, ABS, PC, PMMA, PS, PA.
10. the forming method of perforated plastic part according to any one of claim 1 to 7, its feature
It is,
The thickness of the thin slice waste material is 0.5mm~4mm.
11. a kind of perforated plastic parts, for family expenses living electric apparatus, it is characterised in that using such as claim
The forming method of the perforated plastic part any one of 1 to 10 is made.
A kind of 12. cooking appliances, with housing, have perforated plastic part on the housing, it is characterised in that
The perforated plastic part using perforated plastic part as any one of claim 1 to 10 into
Type method is made.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510873902.0A CN106808646A (en) | 2015-12-02 | 2015-12-02 | Perforated plastic part and its forming method and cooking appliance |
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| CN201510873902.0A CN106808646A (en) | 2015-12-02 | 2015-12-02 | Perforated plastic part and its forming method and cooking appliance |
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| CN106808646A true CN106808646A (en) | 2017-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510873902.0A Pending CN106808646A (en) | 2015-12-02 | 2015-12-02 | Perforated plastic part and its forming method and cooking appliance |
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| CN109501135A (en) * | 2018-11-21 | 2019-03-22 | Oppo（重庆）智能科技有限公司 | Mold, light guide plate and its processing method, display screen and electronic equipment |
| CN114258226A (en) * | 2021-12-31 | 2022-03-29 | 珠海格力电器股份有限公司 | Appearance part, household appliance and mold |
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| CN104029330A (en) * | 2014-06-30 | 2014-09-10 | 东莞誉铭新工业有限公司 | Molding method for thin-wall plastic product |
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| CN114258226B (en) * | 2021-12-31 | 2023-02-24 | 珠海格力电器股份有限公司 | Appearance part, household appliance and mold |
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