CN111873378A - High-efficiency energy-saving extensional rheological process for high-molecular plastic bottle blank - Google Patents
High-efficiency energy-saving extensional rheological process for high-molecular plastic bottle blank Download PDFInfo
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- CN111873378A CN111873378A CN202010552413.6A CN202010552413A CN111873378A CN 111873378 A CN111873378 A CN 111873378A CN 202010552413 A CN202010552413 A CN 202010552413A CN 111873378 A CN111873378 A CN 111873378A
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- China
- Prior art keywords
- plastic bottle
- bottle blank
- blank
- blow molding
- extensional rheological
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- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
- B29C49/786—Temperature
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/071—Preforms or parisons characterised by their configuration, e.g. geometry, dimensions or physical properties
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
- B29C49/783—Measuring, controlling or regulating blowing pressure
-
- 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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/30—Drawing through a die
-
- 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
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
-
- 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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/079—Auxiliary parts or inserts
- B29C2949/08—Preforms made of several individual parts, e.g. by welding or gluing parts together
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7158—Bottles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
The invention discloses an efficient energy-saving extensional rheological process for polymer plastic bottle blanks, which relates to the technical field of plastic bottle blank processing, is applied to extensional rheological processing of polymer plastic bottle blanks with different sizes, and is characterized in that: the method comprises the following steps: heating the plastic bottle blank before the extensional rheological processing: clamping the plastic bottle blank by using a clamp, and heating the plastic bottle blank by using heating equipment; and (3) temperature detection: the clamp pushes the plastic bottle blank to move into the temperature detection equipment, and the temperature of the plastic bottle blank is detected; and (3) extensional rheological processing: the clamp pushes the plastic bottle blank to move into the blow molding die, the stretching clamp clamps the bottom of the plastic bottle blank, and the stretching clamp longitudinally stretches the plastic bottle blank.
Description
Technical Field
The invention belongs to the technical field of plastic bottle blank processing, and particularly relates to an efficient energy-saving extensional rheological process for a high-molecular plastic bottle blank.
Background
The plastic bottle blank is formed under the working condition of an injection molding machine by filling raw materials into a gun mold of the mold by injection molding under specific temperature and pressure, and is a semi-finished product of an intermediate after injection molding, the plastic bottle blank can be processed into a shaped plastic bottle after an extensional rheological process, in the extensional rheological process of the plastic bottle blank, a blow molding mold is required to assist in working, plastic bottles with different sizes can be manufactured according to the blow molding molds with different sizes, before the extensional rheological process, temperature detection is required, when the temperature is detected, the plastic bottle blank needs to be moved to a temperature detection station, the process of detecting the temperature consumes time, and is not beneficial to carrying out an efficient extensional rheological process.
Disclosure of Invention
The invention aims to provide an efficient and energy-saving extensional rheological process for a high-molecular plastic bottle blank, so as to effectively realize the processing of extensional rheology on the plastic bottle blank.
In order to achieve the purpose, the invention provides the following technical scheme: an efficient energy-saving extensional rheological process of polymer plastic bottle blanks, which is applied to extensional rheological processing of polymer plastic bottle blanks with different sizes, comprises the following steps:
heating the plastic bottle blank before the extensional rheological processing: clamping the plastic bottle blank by using a clamp, and heating the plastic bottle blank by using heating equipment;
and (3) temperature detection: the clamp pushes the plastic bottle blank to move into the temperature detection equipment, and the temperature of the plastic bottle blank is detected;
and (3) extensional rheological processing: the clamp pushes the plastic bottle blank to move into the blow molding die, the stretching clamp clamps the bottom of the plastic bottle blank, the stretching clamp longitudinally stretches the plastic bottle blank, air is blown into the plastic bottle blank by using blow molding equipment, the plastic bottle blank is blown by compressed air, and the plastic bottle blank forms a plastic bottle with the same shape as a cavity of the blow molding die;
and (3) performing extensional rheological processing after replacing the blow mold: replacing the blow molding mold according to the size of the plastic bottle blank, wherein two different blow molding molds can move left and right and are replaced, and then performing extensional rheological processing on the plastic bottle blank after the replacement;
cooling the plastic bottle: after the stretching rheological processing is finished, an air cooler is used for blowing air to the outer surface of the plastic bottle, so that the temperature of the plastic bottle is reduced.
Preferably, the blow mold is made of metal materials, the blow mold is formed by combining two semi-cylinder structures, and a mold cavity of the blow mold is cylindrical.
Preferably, the mold cavity of the blow mold is provided with a projection, the outer wall of the plastic bottle blank is attached to the projection, and the outer wall of the plastic bottle blank forms a groove.
Preferably, the length of the blow mold is 10-15 cm, and the length of the longitudinal stretching of the plastic bottle blank is the same as that of the blow mold.
Preferably, the blow molding pressure of the blow molding equipment is 1-5 MPa, and the blow molding time is 1-5 seconds.
Preferably, the heating time of the plastic bottle blank is 30-120 seconds.
Preferably, the heating temperature of the plastic bottle blank is 100-12 ℃.
Preferably, the cooling time of the plastic bottle is 10-20 seconds.
Preferably, the power range of the air cooler is 500 and 800 watts.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the heating equipment, the temperature detection equipment and the blow molding mould are arranged on a vertical plane, after the plastic bottle blank is heated, the plastic bottle blank can be directly sent into the temperature detection equipment, and then the extensional rheological process is carried out, so that the extensional rheological processing speed of the plastic bottle blank is effectively accelerated, the production speed of the plastic bottle blank is improved on a production line of the plastic bottle blank, and the electric energy in the production process of the plastic bottle blank is saved.
Drawings
FIG. 1 is a schematic drawing of an extensional rheology process according to a first embodiment of the invention;
FIG. 2 is a schematic drawing of extensional rheology processing according to example two of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides the following technical scheme: an efficient energy-saving extensional rheological process of polymer plastic bottle blanks, which is applied to extensional rheological processing of polymer plastic bottle blanks with different sizes, comprises the following steps:
a. heating the plastic bottle blank before the extensional rheological processing: clamping the plastic bottle blank by using a clamp, and heating the plastic bottle blank by using heating equipment;
b. and (3) temperature detection: the clamp pushes the plastic bottle blank to move into the temperature detection equipment, and the temperature of the plastic bottle blank is detected;
c. and (3) extensional rheological processing: the clamp pushes the plastic bottle blank to move into the blow molding die, the stretching clamp clamps the bottom of the plastic bottle blank, the stretching clamp longitudinally stretches the plastic bottle blank, air is blown into the plastic bottle blank by using blow molding equipment, the plastic bottle blank is blown by compressed air, and the plastic bottle blank forms a plastic bottle with the same shape as a cavity of the blow molding die;
preferably, the blow mold is made of metal materials, the blow mold is formed by combining two semi-cylindrical structures, and a mold cavity of the blow mold is cylindrical.
d. And (3) performing extensional rheological processing after replacing the blow mold: according to the size of a dimension of plastic bottle base, change the blow mold, two kinds of different blow molds can remove about and change, carry out the extensional rheology processing to the plastic bottle base again after changing, based on the size of a dimension of plastic bottle base, other moulds can be changed after the blow mold can be dismantled, need not carry out extensional rheology processing with other stretch-blow molding equipment.
Preferably, the mold cavity of the blow mold is provided with a convex block, the outer wall of the plastic bottle blank is attached to the convex block, the outer wall of the plastic bottle blank forms a groove, the clamp, the heating device, the temperature detection device, the mold A, the mold B and the stretching clamp are represented in sequence from top to bottom in fig. 1 and fig. 2, all the devices adopted in the stretching rheological process are driven by hydraulic pressure, wherein the heating device, the temperature detection device, the mold A and the mold B can move left and right under the driving of the hydraulic driving device, and the clamp and the stretching clamp can move up and down under the driving of the hydraulic driving device.
e. Cooling the plastic bottle: after the stretching rheological processing is finished, an air cooler is used for blowing air to the outer surface of the plastic bottle, so that the temperature of the plastic bottle is reduced.
Preferably, the length of the blow mold is 10-15 cm, and the length of the longitudinal stretch of the plastic bottle preform is the same as the length of the blow mold.
Preferably, the blow molding pressure of the blow molding equipment is 1-5 MPa, and the blow molding time is 1-5 seconds.
Preferably, the heating time of the plastic bottle preform is 30 to 120 seconds.
Preferably, the heating temperature of the plastic bottle blank is 100-12 ℃.
Preferably, the cooling time for cooling the plastic bottle is 10-20 seconds.
Preferably, the power range of the air cooler is 500 and 800 watts.
For the above processing procedure, the following two embodiments are provided:
example one
Adopting A die to carry out extensional rheological processing on plastic bottle blank
The mold A moves to a position below the temperature detection device, the stretching clamp moves upwards from the bottom of the mold A, the stretching clamp clamps the bottom of the plastic bottle blank, then the plastic bottle blank is stretched longitudinally, the plastic bottle blank is stretched and deformed, meanwhile, the plastic bottle blank moves towards the mold A, the blow molding device blows gas into the plastic bottle blank, the blow molding pressure is 4 MPa, the outer wall of the plastic bottle blank is attached to the inner wall of the mold A, and the plastic bottle blank is subjected to extensional rheological processing.
In this embodiment, the plastic bottle base is after the heating, the plastic bottle base is in the state of easy deformation, the plastic bottle base is fit for carrying out extensional rheological processing this moment, the A mould is two halfcylinder templates, the A mould is fixed on hydraulic drive equipment, remove through hydraulic drive equipment drive A mould, after the A mould reachd the below position of temperature-detecting equipment, two halfcylinder templates of A mould are in detached state, the plastic bottle base reachs between two halfcylinder templates, two halfcylinder templates of hydraulic drive equipment drive are laminated each other, the plastic bottle base is wrapped up in two halfcylinder templates, blow-in air to the plastic bottle base through the blowing equipment, the plastic bottle base inner wall receives compressed air inflation, the slow grow of plastic bottle base.
Example two
Adopting a B die to carry out extensional rheological processing on the plastic bottle blank
The mold B moves to the position below the temperature detection device, the clamp pushes the plastic bottle blank, the plastic bottle blank moves to the interior of the mold B, the stretching clamp clamps the bottom of the plastic bottle blank, the stretching clamp stretches the plastic bottle blank longitudinally, meanwhile, the blow molding device blows air into the plastic bottle blank, the blow molding air pressure is 5 MPa, the plastic bottle blank expands due to pressure, the overall dimension of the plastic bottle blank is increased, and the plastic bottle blank forms a plastic bottle body.
In this embodiment, need remove the A mould earlier, temperature-detecting equipment's below does not have the object to shelter from, the B mould is installed on hydraulic drive equipment, move to temperature-detecting equipment's below through hydraulic drive equipment drive B mould, B mould and A mould drive through independent hydraulic drive equipment, the structure of B mould is the same with the structure of A mould, the size of B mould is greater than the size of A mould, blow molding plastic bottle base in the B mould, the pressure of adoption is greater than the pressure of blow molding plastic bottle base in the A mould big.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. An efficient energy-saving extensional rheological process of polymer plastic bottle blanks, which is applied to extensional rheological processing of polymer plastic bottle blanks with different sizes, and is characterized in that: the method comprises the following steps:
a. heating the plastic bottle blank before the extensional rheological processing: clamping the plastic bottle blank by using a clamp, and heating the plastic bottle blank by using heating equipment;
b. and (3) temperature detection: the clamp pushes the plastic bottle blank to move into the temperature detection equipment, and the temperature of the plastic bottle blank is detected;
c. and (3) extensional rheological processing: the clamp pushes the plastic bottle blank to move into the blow molding die, the stretching clamp clamps the bottom of the plastic bottle blank, the stretching clamp longitudinally stretches the plastic bottle blank, air is blown into the plastic bottle blank by using blow molding equipment, the plastic bottle blank is blown by compressed air, and the plastic bottle blank forms a plastic bottle with the same shape as a cavity of the blow molding die;
d. and (3) performing extensional rheological processing after replacing the blow mold: replacing the blow molding mold according to the size of the plastic bottle blank, wherein two different blow molding molds can move left and right and are replaced, and then performing extensional rheological processing on the plastic bottle blank after the replacement;
e. cooling the plastic bottle: after the stretching rheological processing is finished, an air cooler is used for blowing air to the outer surface of the plastic bottle, so that the temperature of the plastic bottle is reduced.
2. The high-efficiency energy-saving extensional rheological process of high polymer plastic bottle blanks as claimed in claim 1, which is characterized in that: the blow molding die is made of metal materials and is formed by combining two semi-cylinder structures, and the die cavity of the blow molding die is cylindrical.
3. The high-efficiency energy-saving extensional rheological process of high polymer plastic bottle blanks as claimed in claim 1, which is characterized in that: the plastic bottle blank is characterized in that a convex block is arranged in a mold cavity of the blow molding mold, the outer wall of the plastic bottle blank is attached to the convex block, and a groove is formed in the outer wall of the plastic bottle blank.
4. The high-efficiency energy-saving extensional rheological process of high polymer plastic bottle blanks as claimed in claim 1, which is characterized in that: the length of the blow mold is 10-15 cm, and the length of the longitudinal stretching of the plastic bottle blank is the same as that of the blow mold.
5. The high-efficiency energy-saving extensional rheological process of high polymer plastic bottle blanks as claimed in claim 1, which is characterized in that: the blow molding pressure of the blow molding equipment is 1-5 MPa, and the blow molding time is 1-5 seconds.
6. The high-efficiency energy-saving extensional rheological process of high polymer plastic bottle blanks as claimed in claim 1, which is characterized in that: the heating time of the plastic bottle blank is 30-120 seconds.
7. The high-efficiency energy-saving extensional rheological process of high polymer plastic bottle blanks as claimed in claim 1, which is characterized in that: the heating temperature of the plastic bottle blank is 100-12 ℃.
8. The high-efficiency energy-saving extensional rheological process of high polymer plastic bottle blanks as claimed in claim 1, which is characterized in that: the cooling time of the plastic bottle is 10-20 seconds.
9. The high-efficiency energy-saving extensional rheological process of high polymer plastic bottle blanks as claimed in claim 1, which is characterized in that: the power range of the air cooler is 500 and 800 watts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010552413.6A CN111873378A (en) | 2020-06-17 | 2020-06-17 | High-efficiency energy-saving extensional rheological process for high-molecular plastic bottle blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010552413.6A CN111873378A (en) | 2020-06-17 | 2020-06-17 | High-efficiency energy-saving extensional rheological process for high-molecular plastic bottle blank |
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| Publication Number | Publication Date |
|---|---|
| CN111873378A true CN111873378A (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010552413.6A Pending CN111873378A (en) | 2020-06-17 | 2020-06-17 | High-efficiency energy-saving extensional rheological process for high-molecular plastic bottle blank |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932874A (en) * | 2021-09-10 | 2022-01-14 | 宁波市埃美仪表制造有限公司 | Plastic water meter case and production process thereof |
-
2020
- 2020-06-17 CN CN202010552413.6A patent/CN111873378A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932874A (en) * | 2021-09-10 | 2022-01-14 | 宁波市埃美仪表制造有限公司 | Plastic water meter case and production process thereof |
| CN113932874B (en) * | 2021-09-10 | 2024-01-26 | 宁波市埃美仪表制造有限公司 | Plastic water meter case and production process |
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Application publication date: 20201103 |