CN106393551A - Mold core for molding of plastic foam - Google Patents
Mold core for molding of plastic foam Download PDFInfo
- Publication number
- CN106393551A CN106393551A CN201611016556.5A CN201611016556A CN106393551A CN 106393551 A CN106393551 A CN 106393551A CN 201611016556 A CN201611016556 A CN 201611016556A CN 106393551 A CN106393551 A CN 106393551A
- Authority
- CN
- China
- Prior art keywords
- stem
- plastic foam
- masking foil
- base
- core rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/58—Moulds
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3415—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
- B29K2025/04—Polymers of styrene
- B29K2025/06—PS, i.e. polystyrene
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
Abstract
The invention relates to the technical field of processing of plastic foam, in particular to a mold core for molding of the plastic foam. The mold core comprises a base and a core column fixedly connected on the upper end of the base and also comprises a heat exchanger and cylindrical tin foil paper sleeving the mold core, the top end of the tin foil paper is fixedly connected to the edge of the top end of the core column, the bottom end of the tin foil paper is fixedly connected to the upper end of the base, a condensation tube is arranged between the tin foil paper and the core column, a refrigerant is arranged in the condensation tube, a liquid inlet and a liquid outlet of the condensation tube are both located at the lower end of the base and are connected to the heat exchanger, the base is further provided with a through hole, the upper end of the through hole is located between the tin foil paper and the core column, and the through hole is provided with a valve. The mold core can solve the problem that the mold core provided in prior art is difficultly taken out from the plastic foam.
Description
Technical field
The present invention relates to plastic foam processing technique field, especially relate to a kind of core rod for plastic foam molding.
Background technology
Plastic foam, is a kind of chemical material, full name polystyrene foam plastics, has light weight, firm, shock-absorbing, low suction
Tide, easy-formation and the low feature of good resistance to water, thermal insulation, price, be widely used in packaging, insulation, waterproof, every
The fields such as heat, damping.During using plastic foam, need to be selected according to the shape of article, allow the article can be with plastic foam
Fit completely, thus preferably playing protection and the effect supporting.When plastic foam molding, a usually monoblock, so
Need to be cut according to its purposes, form given shape.Again because plastic foam is easily broken, so during cutting
Easily cause the damage of plastic foam.Therefore, in order to avoid above-mentioned the occurrence of, can be in plastic foam molding, toward mould
Add in tool and there is the core rod of given shape, for shaping to the inside of plastic foam, thus allowing the plastics of given shape
Foam is integrally formed, and reduces the situation that plastic foam damages because of cutting, and can also improve working (machining) efficiency.
But, because core rod is provided within mold, and because plastic foam can occur during molding
The expansion of volume, so can cause core rod and plastic foam tightly to press together so that core rod is difficult to take from plastic foam
Go out.
Content of the invention
The invention is intended to providing a kind of core rod for plastic foam molding, it is difficult to the core rod solving prior art offer
The problem taken out from plastic foam.
To achieve these goals, the present invention provides a kind of core rod for plastic foam molding, including base and fixation
It is connected to the stem stem of base upper end, the masking foil also including heat exchanger and being set in the tubular outside stem stem, the top of masking foil
End is fixedly connected with stem stem tip edge, and the bottom of masking foil is fixedly connected with base upper end, is provided between masking foil and stem stem
It is marked with water between condensing tube, and masking foil and stem stem, in condensing tube, is provided with cryogen, the liquid inlet of condensing tube and liquid outlet are equal
Be connected positioned at the lower end of base and with heat exchanger, base be additionally provided with through hole, the upper end of through hole be located at masking foil and stem stem it
Between, through hole is provided with valve.
The know-why of the technical program and having the technical effect that：For the core rod of plastic foam molding, including base and core
Post, stem stem is fixed on base, forms core rod.Due to, during plastic foam molding, needing constantly to be passed through high temperature
Steam, so the technical program is arranged with masking foil outside stem stem, for avoiding the stem stem in masking foil to be burnt out by high temperature.The bottom of at
Seat is provided with the through hole between masking foil and stem stem, for injecting water into the space between masking foil and stem stem, by tinfoil paper
Paper is separated with stem stem, it is to avoid masking foil is extruded and offseted with stem stem so that plastic foam is difficult to the demoulding by plastic foam.
Due to masking foil soft material, and water has mobility, so masking foil is easily because of the extruding of plastic foam
Deformation, thus cause the shape of the plastic foam after molding to change.Therefore, in order to avoid above-mentioned the occurrence of, in stannum
It is provided with the condensing tube with cryogen between foil paper and stem stem, allows water be frozen into ice in the presence of cryogen, thus being tinfoil paper
Paper provides higher supporting role.Condensing tube is also connected with outside heat exchanger, allows the cryogen after absorbing heat can be
Releasing heat at heat exchanger, and be again introduced in condensing tube, so circulating, thus avoiding the ice sheet between masking foil and stem stem
Melt, cause the deformation of masking foil.
The core rod that this programme provides is mainly used in the molding with the plastic foam of through hole, the height of the plastic foam after molding
Degree is less than the height of stem stem.So, toward after injection water between masking foil and stem stem, water surface elevation needs more than moulding plastics foam
Height, thus after allowing water be frozen into ice, the forming process of the whole through hole of plastic foam can be provided and support.
After plastic foam molding, stop the cooling to ice sheet, allow ice sheet be melted into water, and allow water to flow out from through hole.It
Afterwards, using air-extractor, extract the air between masking foil and stem stem out, allow masking foil to shrink to stem stem in the presence of pressure,
Make that there is between masking foil and plastic foam certain space, thus core rod can easily be taken from plastic foam
Go out, reduce the difficulty of plastic foam processing.
The following is the preferred version of such scheme：
Preferred version one：Based on base case, in described stem stem, it is provided with cavity, in cavity, be provided with heat riser.Work as plastic foam
After molding, heat riser being opened, accelerating the speed that ice sheet melts, thus improving the working (machining) efficiency of plastic foam.
Preferred version two：Based on preferred version one, described condensing tube in the shape of a spiral, is set in outside stem stem, can increase water
With the contact area of condensing tube so that condensation effect is more preferable.Additionally, during plastic foam molding, near masking foil
Ice sheet be easy to melt, the ice sheet of thawing so condensing tube is arranged curl, can be reduced, and then more preferable ensure to mould
The shape of strand foam.
Preferred version three：Based on preferred version two, the junction of described masking foil and stem stem and masking foil and base
Junction is equipped with fluid sealant.Fluid sealant soaks foaming it can be avoided that water spills from the junction of masking foil and stem stem or base
Material is additionally it is possible to ensure that the water yield between masking foil and stem stem will not change, thus preferably maintaining the shape of masking foil.
Preferred version four：Based on base case, the volume of the water between described masking foil and stem stem is less than masking foil and core
Volume between post.Can become big because water is frozen into volume when ice, thus allow water volume be less than space volume, energy
Enough avoid causing greatly the situation that masking foil is bursting at the collision to occur because water coagulated volume becomes.
Preferred version five：Based on preferred version four, the distance between described masking foil and stem stem are 5mm.If ice sheet is too
Thickness, just not so good controlled by condensing tube so that outmost ice-out faster, thus affecting the molding of plastic foam；As
Fruit ice layer is too thin, plastic foam will be made to be frozen near the part of ice sheet, be also unfavorable for molding.
Brief description
Fig. 1 is the structural representation of the embodiment of the present invention.
Specific embodiment
Below by specific embodiment, the present invention is further detailed explanation：
Reference in Figure of description includes：Base 1, stem stem 2, heat exchanger 3, masking foil 4, condensing tube 5, cryogen 6,
Through hole 7, valve 8, cavity 9, heating wire 10, fluid sealant 11.
As shown in Figure 1, for the core rod of plastic foam molding, including base 1 and stem stem 2, stem stem 2 is in circle to the present embodiment
Cylinder, the bottom of stem stem 2 is fixedly connected with the upper end of base 1.It is provided with cavity 9 in stem stem 2, be provided with cavity 9 for intensification
Heating wire 10, the connecting line of heating wire 10 passes through base 1 to be connected with outside power supply.Also it is arranged with cylindrical shape outside stem stem 2
Masking foil 4, the top of masking foil 4 is fixedly connected with the edge on stem stem 2 top, and the upper end of the bottom of masking foil 4 and base 1 is fixed
Connect, the distance between masking foil 4 and stem stem 2 are 5mm.Additionally, the junction of masking foil 4 and stem stem 2 and masking foil 4 with
The junction of base 1 is equipped with fluid sealant 11.
It is additionally provided with condensing tube 5 between masking foil 4 and stem stem 2, condensing tube 5 in the shape of a spiral, is set in stem stem 2 periphery, and
And the liquid inlet of condensing tube 5 and liquid outlet are respectively positioned on the lower end of base 1 and are connected with heat exchanger 3.Condensing tube 5 is built with freezing
Agent 6, this cryogen 6 is conventional freon.Through hole 7 is additionally provided with base 1, the upper end of through hole 7 is located at masking foil 4 and stem stem
Between 2, and through hole 7 is provided with valve 8.
During use, according to the shape of moulding plastics foam, the stem stem 2 of core rod is inserted plastic foam particle to be formed
In, and open valve 8, a certain amount of water is injected in the space between masking foil 4 and stem stem 2 by through hole 7, but the body of water
The long-pending volume less than the space between masking foil 4 and stem stem 2, but the water surface needs the upper end higher than plastic foam.Open heat friendship
Parallel operation 3, and allow cryogen 6 shuttling movement in condensing tube 5 with heat exchanger 3, thus allowing water be frozen into ice.Afterwards, just permissible
Forming processes are carried out to plastic foam, in this course, needs to remain cryogen 6 in condensing tube 5 and heat exchanger 3
Middle shuttling movement.After plastic foam molding, stop the cooling to ice sheet, and open heating wire 10, ice sheet is heated, from
And accelerate the thawing of ice sheet.After ice sheet is melted into water, flow out from through hole 7.Afterwards, using air-extractor, extract out masking foil 4 with
Air between stem stem 2, allows masking foil 4 to shrink to stem stem 2 in the presence of pressure so that between masking foil 4 and plastic foam
There is certain space, thus core rod can easily be taken out from plastic foam, reduce the difficulty of plastic foam processing
Degree.
Above-described is only embodiments of the invention, the general knowledge here such as known concrete structure and/or characteristic in scheme
Excessively describe.It should be pointed out that for a person skilled in the art, on the premise of without departing from present configuration, also
Some deformation can be made and improve, these also should be considered as protection scope of the present invention, these are real all without the impact present invention
The effect applied and practical applicability.This application claims protection domain should be defined by the content of its claim, description
In specific embodiment etc. record the content that can be used for explaining claim.
Claims (6)
1. be used for the core rod of plastic foam molding, include base and the stem stem being fixedly connected on base upper end it is characterised in that：Also
Including heat exchanger and the masking foil that is set in the tubular outside stem stem, the top of masking foil is fixing with stem stem tip edge even
Connect, the bottom of masking foil is fixedly connected with base upper end, is provided with condensing tube between masking foil and stem stem, and masking foil and stem stem
Between be marked with water, be provided with cryogen in condensing tube, the liquid inlet of condensing tube and liquid outlet are respectively positioned on the lower end of base and are handed over heat
Parallel operation connects, and base is additionally provided with through hole, and the upper end of through hole is located between masking foil and stem stem, and through hole is provided with valve.
2. the core rod for plastic foam molding according to claim 1 it is characterised in that：It is provided with sky in described stem stem
Chamber, is provided with heat riser in cavity.
3. the core rod for plastic foam molding according to claim 2 it is characterised in that：Described condensing tube is helically
Shape, is set in outside stem stem.
4. the core rod for plastic foam molding according to claim 3 it is characterised in that：Described masking foil and stem stem
Junction and masking foil are equipped with fluid sealant with the junction of base.
5. the core rod for plastic foam molding according to claim 1 it is characterised in that：Described masking foil and stem stem it
Between the volume of water be less than volume between masking foil and stem stem.
6. the core rod for plastic foam molding according to claim 5 it is characterised in that：Described masking foil and stem stem it
Between distance be 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611016556.5A CN106393551B (en) | 2016-11-18 | 2016-11-18 | For the molding mold core of plastic foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611016556.5A CN106393551B (en) | 2016-11-18 | 2016-11-18 | For the molding mold core of plastic foam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106393551A true CN106393551A (en) | 2017-02-15 |
| CN106393551B CN106393551B (en) | 2018-10-16 |
Family
ID=58069092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611016556.5A Active CN106393551B (en) | 2016-11-18 | 2016-11-18 | For the molding mold core of plastic foam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106393551B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59202828A (en) * | 1983-05-04 | 1984-11-16 | Toyo Soda Mfg Co Ltd | Core vent for foaming mold |
| JPH0812890A (en) * | 1994-06-29 | 1996-01-16 | Toray Dow Corning Silicone Co Ltd | Elastic roll and its production |
| CN202607901U (en) * | 2012-04-10 | 2012-12-19 | 滁州佳诚模具制造有限公司 | Foaming mold core for main refrigeration bodies of refrigerators |
| CN204869538U (en) * | 2015-06-15 | 2015-12-16 | 盐城耀强模塑科技有限公司 | Automotive interior spare mould |
| CN206242352U (en) * | 2016-11-18 | 2017-06-13 | 遵义市剑龙塑料泡沫制品有限公司 | For the core rod of plastic foam shaping |
-
2016
- 2016-11-18 CN CN201611016556.5A patent/CN106393551B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59202828A (en) * | 1983-05-04 | 1984-11-16 | Toyo Soda Mfg Co Ltd | Core vent for foaming mold |
| JPH0812890A (en) * | 1994-06-29 | 1996-01-16 | Toray Dow Corning Silicone Co Ltd | Elastic roll and its production |
| CN202607901U (en) * | 2012-04-10 | 2012-12-19 | 滁州佳诚模具制造有限公司 | Foaming mold core for main refrigeration bodies of refrigerators |
| CN204869538U (en) * | 2015-06-15 | 2015-12-16 | 盐城耀强模塑科技有限公司 | Automotive interior spare mould |
| CN206242352U (en) * | 2016-11-18 | 2017-06-13 | 遵义市剑龙塑料泡沫制品有限公司 | For the core rod of plastic foam shaping |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106393551B (en) | 2018-10-16 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 563319 in the 532 plant area, Fenghua Town, Suiyang County, Zunyi City, Guizhou Province Patentee after: Guizhou Jianzhan Technology Co.,Ltd. Address before: 563319 in the 532 plant area, Fenghua Town, Suiyang County, Zunyi City, Guizhou Province Patentee before: ZUNYI JIANLONG PLASTIC FOAM PRODUCTS Co.,Ltd. |