CN106671344B - Mould for molding and processing foamed polyethylene product and use method thereof - Google Patents
Mould for molding and processing foamed polyethylene product and use method thereof Download PDFInfo
- Publication number
- CN106671344B CN106671344B CN201710077161.4A CN201710077161A CN106671344B CN 106671344 B CN106671344 B CN 106671344B CN 201710077161 A CN201710077161 A CN 201710077161A CN 106671344 B CN106671344 B CN 106671344B
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- Prior art keywords
- die
- mould
- foamed polyethylene
- product
- molding
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- -1 polyethylene Polymers 0.000 title claims abstract description 60
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 59
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 59
- 238000000465 moulding Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000000047 product Substances 0.000 claims abstract description 69
- 239000000463 material Substances 0.000 claims abstract description 58
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 238000007493 shaping process Methods 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 239000011265 semifinished product Substances 0.000 claims abstract description 6
- 238000009966 trimming Methods 0.000 claims abstract description 4
- 238000005187 foaming Methods 0.000 claims description 13
- 238000007664 blowing Methods 0.000 claims description 9
- 239000004831 Hot glue Substances 0.000 claims description 6
- 239000000498 cooling water Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims 2
- 239000012530 fluid Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000004080 punching Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
Images
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
- B29C44/58—Moulds
- B29C44/588—Moulds with means for venting, e.g. releasing foaming gas
-
- 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
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
Abstract
The invention relates to a method for using a mould for molding and processing a product made of foamed polyethylene, wherein the mould is made of metal or other hard materials, the shape of a mould cavity is manufactured according to the molding and material formula of a specific product, the deformation rate and the shrinkage rate are set, different auxiliary molding devices are matched with an exhaust device to manufacture a hollow or hollow-free foamed polyethylene product with a complicated molding shape, the hollow or hollow-free foamed polyethylene product with a spherical radian is manufactured, a device connected with a mould frame and the mould cavity is hollow, a cooling device is added to rapidly mold the product, the manufactured semi-finished product has burrs or redundant parts, and the finished product is manufactured through shaping and trimming.
Description
Technical Field
The invention relates to the field of plastic product molding processing, in particular to a mold for molding a product made of foamed polyethylene and a use method thereof.
Background
The foamed polyethylene is a closed-cell microporous thermoplastic plastic, is mainly used as packaging materials, toy materials, damping materials, heat insulation materials and other industrial applications, and is a mold for molding and processing products made of the foamed polyethylene, and a using method thereof.
Most of the existing products made of the foamed polyethylene are manufactured by punching, pasting, sewing, polishing and other methods through a punching die, so that more manpower is used, the products with complex shapes and consistent shapes are difficult to accurately manufacture, and popularization of the foamed polyethylene products is limited.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a tool and a using method which can effectively improve the accuracy of a foamed polyethylene material product, can manufacture a hollow or hollow-free foamed polyethylene material product with a complex shape with a spherical radian at one time, and reduce the labor cost and the material cost, namely: a mould for shaping and processing a product made of foamed polyethylene and a use method thereof.
The invention adopts the following technical scheme:
a mould for shaping the foamed polyethylene material is made up of metal or other hard materials and is composed of mould frame, mould cavity matched with the shape of foamed polyethylene product, connecting unit, air exhauster, auxiliary shaping unit and cooling unit.
Further, the frame of the mold needs to be capable of bearing at least 0.1 ton of pressure, and the pressure to be borne is specifically determined according to the size of the specific product and the used auxiliary forming machine equipment.
Furthermore, the cavity needs to be matched with the appearance of a product to be processed, deformation rates of different degrees are set according to the specific different appearances, shrinkage rates of different proportions are set for foamed polyethylene materials with different formulas, and the foaming polyethylene materials are required to be modified to meet the requirements according to the specific product appearance and the used material test.
Furthermore, the die carrier and the die cavity are made of steel, aluminum alloy, copper alloy or other hard materials according to specific requirements, and the die carrier, the die cavity and the connecting device can be integrally processed by the same materials. Or other materials are filled between the die carrier and the die cavity or the auxiliary forming device to serve as a connecting device for fixing the die carrier and the die cavity.
Furthermore, the connecting device is required to be lower than the die orifice of the die cavity or the edge orifice of the auxiliary forming device to form a preparation space, and the specific preparation space is determined according to the material used by a specific product and is mainly used for reducing the contact area of the die to the material during the compression forming, enhancing the forming effect, reducing the forming time and reducing the material waste.
Furthermore, the exhaust device can be used on the die by using the process methods of exhaust grooves, exhaust holes, exhaust nails and the like singly or in a mixed mode, and in order to enhance the product effect, a vacuumizing device is additionally arranged to assist in exhausting.
Further, the specific positions of the exhaust devices such as the exhaust grooves, the exhaust holes, the exhaust nails and the like are required to be determined according to the modeling and the requirements of specific products, and the positions where the air in the die is difficult to exhaust or the positions where the materials are difficult to put in place are arranged.
Furthermore, the device using the vacuumizing device is matched with the exhaust device to form negative pressure on materials in the die cavity, so that the appearance of a finished product of the product is more matched with the shape of the die cavity, and the shape of the product is more accurate.
Furthermore, the auxiliary molding device is an auxiliary mold which is manufactured according to the shape and the required thickness of a specific product and is matched with the cavity, or an air inlet device which can blow air at a fixed position in the cavity and increase pressure for auxiliary molding.
Further, when the product is in an open shape, the cavity of the mold and the auxiliary mold are respectively used as an upper mold and a lower mold to form a complete mold, the foaming polyethylene material entering the mold is shaped by direct pressurizing force, cooled and shaped, and the required semi-finished product of the foaming polyethylene material is manufactured, and redundant parts and burrs are trimmed to obtain the finished product of the product.
Furthermore, the die cavity and the auxiliary die can be manufactured into a fixed unidirectional die opening structure or a movable multidirectional die opening structure according to specific requirements of specific products.
Further, when the product is in a closed hollow shape, the product is directly separated from a cavity matched with the product at a proper position to form an upper die and a lower die, an auxiliary forming device capable of blowing to increase pressure is arranged between the upper die and the lower die, the foaming polyethylene material entering the die is shaped by the pressurizing force, the foaming polyethylene material entering the middle position of the material in the die is blown to increase pressure to assist shaping, cooling and shaping are carried out, a hollow foaming polyethylene material semi-finished product with a closed appearance is manufactured, and redundant parts and burrs are trimmed to form a product finished product.
Furthermore, the die cavity can be manufactured into a fixed unidirectional die opening structure or a movable multidirectional die opening structure according to the requirements of specific products.
Furthermore, the cooling device can be cooled by direct air cooling or cooling water circulation cooling or both methods.
As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following beneficial effects:
the deformation rate and the shrinkage rate are set when the mould cavity matched with the shape of the foamed polyethylene product is manufactured, so that the foamed polyethylene product with consistent shape meeting the requirements can be accurately manufactured; the exhaust device is arranged at a position in the die where air is difficult to exhaust or a position where materials are difficult to reach, and the auxiliary forming device is arranged on the die, so that a product with a spherical radian, complex in shape and made of hollow or hollow-free foamed polyethylene material can be manufactured at one time; the use of materials can be reasonably controlled, and the material cost is reduced; the connecting device is arranged, so that the die carrier and the die cavity or the auxiliary die can be manufactured in a connected mode or separated mode according to specific product requirements, various processes for manufacturing the die can be flexibly used, the die carrier can be shared, and the die opening cost is reduced; can manufacture the product of the foaming polyethylene material with the complex modeling of the spherical radian at one time and reduce the manual use cost.
Drawings
FIG. 1 is a top view of a mold in which a cavity of the mold and a mold frame are connected together;
FIG. 2 is a top view of the structure of the auxiliary mold and the mold frame of the mold connected together;
FIG. 3 is a cross-sectional view showing the structure of a cavity of a mold for foamed polyethylene products with an open appearance and an auxiliary mold and a mold frame when they are operated together;
fig. 4 is a cross-sectional view showing the structure of the cavity of the mold of the foamed polyethylene product with a closed appearance and the auxiliary molding device and the mold frame together when they are operated.
The drawings are marked with the following description:
and (3) marking (1) as a die frame of the die.
And the mark (2) is a connecting device for connecting the die frame and the die cavity of the die.
The label (3) is the cavity part of the mould.
And the mark (4) is a side opening part of a cavity of the die.
And the mark (5) is an exhaust device in the cavity of the die.
And the mark (6) is a die frame of an auxiliary forming part of the die.
And the mark (7) is a connecting device for connecting the die frame and the auxiliary die of the die.
And the mark (8) is an auxiliary mould of the mould.
And the mark (9) is an edge opening of an auxiliary die of the die.
And the reference (10) is an exhaust device of an auxiliary mould of the mould.
And the mark (11) is a circulating cooling water device of an auxiliary die of the die.
The label (12) is the preparation of the mould.
The mark (13) is the inner space of the mould.
And the label (14) is a circulating cooling water device of the cavity of the die.
The mark (15) is a hollow part of the foaming polyethylene product with the closed appearance.
An air inlet device for auxiliary shaping of the mould, which increases the pressure for the blowing air, is marked (16).
The specific embodiment is as follows:
the invention is further described below by means of specific embodiments.
The method comprises the steps of buckling a cavity (mark 2) of a die and an auxiliary die (mark 8), enabling a die opening (mark 4) of the cavity and a die opening (mark 9) of the auxiliary die to be matched to form an inner space (mark 13) of the die, connecting the die frame (mark 1) through a device (mark 2) for connecting the cavity and the die frame, connecting the die frame (mark 6) through a device (mark 7) for connecting the auxiliary die and the die frame, enabling the die frames (marks 1 and 6) to be overlapped to bear redundant pressure, placing a foamed polyethylene material heated to a plastic state in the inner space (mark 13) of the die, shaping by the aid of pressure, exhausting or vacuumizing through an exhaust device (mark 5 and mark 10) to form a negative pressure enhanced shaping effect, cooling and shaping through a cooling water circulation device (mark 11 and mark 14), trimming burrs and redundant parts to form a finished product of a foamed polyethylene product with a complex shape and an open appearance.
The complex modeling with the spherical radian and the open appearance can be molded by a die at one time, so that the product of the foaming polyethylene material with the complex modeling with the spherical radian and the open appearance can be manufactured, and the waste of materials and manpower can be effectively reduced.
Embodiment 2 referring to fig. 1 and 4, a mold for molding a foamed polyethylene product is made of metal or other hard materials, and comprises a mold frame (reference numeral 1), a cavity (reference numeral 3) adapted to the shape of the foamed polyethylene product, a connecting device (reference numeral 2) for connecting the cavity and the mold frame, an exhaust device (reference numeral 5), an air intake device (reference numeral 16) for assisting molding, and a cooling device (reference numeral 14).
The two open cavities (marked 3) of the die are buckled to enable the die openings (marked 4) of the two cavities to be matched to form a die cavity (marked 13) with a closed appearance, the two die frames (marked 1) are connected through a device (marked 2) for connecting the cavities and the die frames respectively, the two die frames (marked 1) are overlapped to bear redundant pressure, the middle of two foamed polyethylene materials heated to a plastic state is stuck with hot melt adhesive, the two foamed polyethylene materials are placed at the position of the die cavity (marked 13), cold high-pressure air is blown into the middle of the two materials which enter the die cavity through an air inlet device (marked 16) capable of blowing to increase pressure to separate the two materials, the hot melt adhesive of a part which does not need to be contacted is cooled and solidified, pressure molding is increased, the die is molded by pressurizing force, negative pressure reinforcing molding effect is formed by exhausting or vacuumizing the air through an exhaust device (marked 5), the hollow (marked 15) is cooled and molded through a cooling water circulation device, the hollow (marked 15) is processed, the foamed polyethylene semi-finished product with a complicated spherical shape with radian and the redundant molded product is trimmed.
The hollow complex modeling with the spherical radian with the closed appearance can be molded at one time through a die, so that the hollow foaming polyethylene product with the complex modeling with the spherical radian with the closed appearance can be precisely manufactured, and the waste of materials and manpower is effectively reduced.
The foregoing description is only a preferred embodiment of the present invention, and therefore, the scope of the present invention should not be limited thereto, i.e., the changes and modifications made according to the patent scope of the present invention and the content of the specification should be considered as falling within the scope of the present invention.
Claims (8)
1. The utility model provides a mould application method of molding processing foaming polyethylene product, mould adopts metal or other hard materials to make, and the mould includes die carrier (1), with the die cavity (3) of foaming polyethylene product appearance looks adaptation, connecting device (2) of connecting die cavity and die carrier, exhaust apparatus (5), auxiliary forming device and cooling device (14), two open die cavities (3) lock of mould form the closed mould cavity of appearance, and exhaust apparatus (5) of mould set up in the position that the air is difficult to discharge or the material is difficult to reach, its characterized in that includes the following step:
step 1, sticking hot melt adhesive between two sheets of foamed polyethylene materials heated to a plastic state, and placing the two sheets of foamed polyethylene materials in a hollow position of a die;
step 2, blowing high-pressure cold air into the middle position of two pieces of materials entering a die cavity of a die through an auxiliary forming device for increasing pressure by blowing, so that the two pieces of foamed polyethylene materials are separated, hot melt adhesive of a part which does not need to be contacted is cooled and solidified, and increasing pressure for auxiliary forming, simultaneously shaping the die under pressure, and simultaneously enabling the materials to reach a position which is not easy to reach through an exhaust device (5), and processing a hollow semi-finished product of the foamed polyethylene material with a closed appearance and a spherical radian;
and step 3, trimming burrs and redundant parts to form a finished product of the product.
2. The method for using a mold for molding a foamed polyethylene product according to claim 1, wherein: the device for vacuumizing and blowing high-pressure cold air is arranged on the die.
3. A method of using a mold for molding a foamed polyethylene product according to claim 1 or 2, characterized in that: the foamed polyethylene material is heated to a moldable semi-fluid state and placed into a mold.
4. A mould for molding and processing a foamed polyethylene product is characterized in that: the mould adopts metal or other hard materials to make, and the mould includes die carrier (1), with die cavity (3) of foaming polyethylene product appearance looks adaptation, connecting device (2) of connecting die cavity and die carrier, exhaust apparatus (5), auxiliary forming device and cooling device (14), two open die cavity (3) lock of mould, form the mould sky that the appearance is sealed, exhaust apparatus (5) setting of mould is in the position that the air is difficult to discharge or the material is difficult to reach, the use of mould includes the following step:
step 1, sticking hot melt adhesive between two sheets of foamed polyethylene materials heated to a plastic state, and placing the two sheets of foamed polyethylene materials in a hollow position of a die;
step 2, blowing high-pressure cold air into the middle position of two pieces of materials entering a die cavity of a die through an auxiliary forming device for increasing pressure by blowing, so that the two pieces of foamed polyethylene materials are separated, hot melt adhesive of a part which does not need to be contacted is cooled and solidified, and pressure auxiliary forming is increased, meanwhile, the die is subjected to pressure forming, and meanwhile, the air exhaust device (5) is used for exhausting or vacuumizing to form a negative pressure enhanced forming effect, and the air exhaust device (5) is used for processing a hollow semi-finished product of the foamed polyethylene material with the spherical radian, wherein the position of the material is not easy to reach at the bottom;
and step 3, trimming off redundant burrs and redundant parts to form a finished product of the product.
5. A mold for molding a foamed polyethylene product according to claim 4, wherein: the device for vacuumizing and blowing high-pressure cold air is arranged on the die.
6. A mold for molding a foamed polyethylene product according to claim 4, wherein: the exhaust device is an exhaust groove, an exhaust hole and an exhaust nail which are used on the die singly or in a mixed mode.
7. A mould for moulding foamed polyethylene products according to any of claims 4-6, wherein: the cavity of the die is manufactured into a fixed unidirectional die opening or multidirectional die opening structure according to the requirements of specific products.
8. A mould for moulding foamed polyethylene products according to any of the claims 4-6, characterized in that: the cooling device adopts direct air cooling or adopts cooling water to circularly cool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710077161.4A CN106671344B (en) | 2017-02-14 | 2017-02-14 | Mould for molding and processing foamed polyethylene product and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710077161.4A CN106671344B (en) | 2017-02-14 | 2017-02-14 | Mould for molding and processing foamed polyethylene product and use method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106671344A CN106671344A (en) | 2017-05-17 |
| CN106671344B true CN106671344B (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710077161.4A Active CN106671344B (en) | 2017-02-14 | 2017-02-14 | Mould for molding and processing foamed polyethylene product and use method thereof |
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| Country | Link |
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| CN (1) | CN106671344B (en) |
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| CN111923313B (en) * | 2020-08-15 | 2022-10-25 | 东莞市粤丰新型建材有限公司 | Preparation method of building prefabricated composite building block |
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| JP2004181630A (en) * | 2002-11-29 | 2004-07-02 | Kyoraku Co Ltd | Foam-lining blow molded object and its manufacturing method |
| CN1522845A (en) * | 2002-11-19 | 2004-08-25 | 贝尼克卡里科股份公司 | Method for the manufacture of a molded body firmly bonded to a grained or structured molded skin and a device for performing the method |
| KR20120088959A (en) * | 2011-02-01 | 2012-08-09 | 에너진(주) | a manufacturing method of FRP structures or FRP products and, FRP structures or FRP products and, a mold forming thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103171123B (en) * | 2011-12-20 | 2017-04-12 | 京洛株式会社 | Hollow foaming formed body manufacture method and hollow foaming formed body |
| CN203973938U (en) * | 2014-06-30 | 2014-12-03 | 圣美精密工业(昆山)有限公司 | A kind of Multifunctional injection mould |
| CN204183805U (en) * | 2014-09-24 | 2015-03-04 | 东莞市乔迪麦贸易有限公司 | A kind of hot-pressing forming system of foaming product |
| CN207465710U (en) * | 2017-02-14 | 2018-06-08 | 罗松 | A kind of mold of moulding processing expanded polyethylene product |
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2017
- 2017-02-14 CN CN201710077161.4A patent/CN106671344B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316367A (en) * | 2001-05-08 | 2001-10-10 | 朱仲力 | Technology and equipment for containing liquid in group of semi-hard bottles made of coiled plastic material |
| CN1522845A (en) * | 2002-11-19 | 2004-08-25 | 贝尼克卡里科股份公司 | Method for the manufacture of a molded body firmly bonded to a grained or structured molded skin and a device for performing the method |
| JP2004181630A (en) * | 2002-11-29 | 2004-07-02 | Kyoraku Co Ltd | Foam-lining blow molded object and its manufacturing method |
| KR20120088959A (en) * | 2011-02-01 | 2012-08-09 | 에너진(주) | a manufacturing method of FRP structures or FRP products and, FRP structures or FRP products and, a mold forming thereof |
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| CN106671344A (en) | 2017-05-17 |
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Effective date of registration: 20231030 Address after: No. 224, Building 1, Zone B, Gubai Street Industrial Park, Gaochun District, Nanjing City, Jiangsu Province, 211300 Patentee after: Nanjing Greenway to Jian Green Environmental Protection Technology Partnership Enterprise (L.P.) Address before: 362200 dormitory 404, audit bureau, Chongde Road, Jinjiang City, Quanzhou City, Fujian Province Patentee before: Luo Song |
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