阅读说明：本技术 一种高分子塑料瓶坯的高效节能拉伸流变工艺 (High-efficiency energy-saving extensional rheological process for high-molecular plastic bottle blank ) 是由 樊少佑 樊国俊 唐帅 苗雨 于 2020-06-17 设计创作，主要内容包括：本发明公开了一种高分子塑料瓶坯的高效节能拉伸流变工艺,本发明涉及塑料瓶坯加工技术领域,应用于不同尺寸的高分子塑料瓶坯的拉伸流变加工中,其特征在于：包括如下步骤：拉伸流变加工前对塑料瓶坯进行加热：用夹具夹住塑料瓶坯,利用加热设备加热塑料瓶坯；温度检测：夹具推动塑料瓶坯移动至温度检测设备中,检测塑料瓶坯的温度；拉伸流变加工：夹具推动塑料瓶坯移动至吹塑模具内,用拉伸夹具夹住塑料瓶坯的底部,拉伸夹具纵向拉伸塑料瓶坯,本发明中,将加热设备和温度检测设备以及吹塑模具安装在一个竖直的平面上,有效加快了塑料瓶坯的拉伸流变加工速度,节约了塑料瓶坯生产过程中的电能。(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.)

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.

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: