CN113414964A - Blowing machine plasticizing device capable of effectively preventing air bubbles - Google Patents
Blowing machine plasticizing device capable of effectively preventing air bubbles Download PDFInfo
- Publication number
- CN113414964A CN113414964A CN202110649719.8A CN202110649719A CN113414964A CN 113414964 A CN113414964 A CN 113414964A CN 202110649719 A CN202110649719 A CN 202110649719A CN 113414964 A CN113414964 A CN 113414964A
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- plasticizing device
- screw
- screw rod
- plasticizing
- bubbles
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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
Abstract
The invention discloses a plasticizing device of a blow molding machine, which can effectively prevent bubbles, wherein the plasticizing device is obliquely arranged, so that the bubbles in molten liquid plastic can move to the tail part of a charging barrel when a screw rod works, and the bubbles in the liquid plastic at the head part of the screw rod can be effectively prevented; the screw rod head sets up to asymmetric fillet structure, can effectively prevent the stagnant flow effect of liquid plastic in the feed cylinder, also can reduce crowded material face simultaneously, is favorable to reducing the feed inlet height of blowing machine bush, further prevents the influence of bubble to the blowing product.
Description
Technical Field
The invention relates to a blow molding machine structure, in particular to a plasticizing device of a blow molding machine, which can effectively prevent air bubbles.
Background
A blow molding machine is a plastic processing machine that blows a predetermined amount of liquid plastic to a mold cavity of a predetermined shape by using the wind power blown by the machine, thereby producing a plastic product. In the prior art, the most widely used plasticizing device is a screw-type plasticizing device, which is used for heating and plasticizing a certain amount of plastic within a predetermined time, then ejecting a certain amount of liquid plastic at a certain pressure and speed, and after the ejection is finished, cooling and molding the molten plastic.
Wherein, the plasticizing device mainly comprises a feeding device, a charging barrel and a screw rod part. Wherein, the charging barrel is externally provided with a multi-stage heating device for melting plastics. The plastic is melted by the extrusion action of the multistage heating device and the screw, and in the melting process, the liquid plastic can continuously introduce bubbles from the granular plastic.
In the prior art, as shown in fig. 1, the liquid plastic in the barrel is extruded, air bubbles are mainly present in the liquid plastic close to the upper surface of the barrel, and the air bubbles have small influence during blow molding but are difficult to remove. Because the air bubble quantity is less and smaller, the influence on the performance and the yield of the injection molding product is small.
However, when the injection molding product has high requirements on the appearance, the air holes formed by the air bubbles directly affect the appearance of the product, and the yield is reduced.
Therefore, the invention discloses a plasticizing device of a blow molding machine, which can effectively prevent air bubbles from remaining in liquid plastic, reduce the influence of the air bubbles on the appearance of a blow molding product and improve the yield of the product.
Disclosure of Invention
The invention discloses a plasticizing device of a blow molding machine, which can effectively prevent bubbles from remaining in liquid plastic, reduce the influence of the bubbles on the appearance of blow molding products and improve the yield of the products.
An energy-saving consumption-reducing plasticizing device for a blow molding machine comprises a material cylinder 1 and a screw 2, wherein the screw 2 is positioned in the material cylinder 1; a multi-stage heating device 3 is arranged outside the charging barrel 1, and the end part of the screw 2 is a screw head 5; the plasticizing device is arranged in an inclined mode, and the included angle between the plasticizing device and the horizontal line is recorded as beta.
Further, the multistage heating device 3 is covered by a heat-insulating jacket 4.
Further, the tail part of the screw 2 is provided with a feeding device 6 and a cooling jacket 7.
The plasticizing device of the blow molding machine is connected with a neck mold and a blowing needle at the end part of the screw rod 2.
By changing the invention, the end part of the screw rod 2 is connected with the machine head and the nozzle, and the plastic injection molding machine can be used as a plasticizing device.
Further, the included angle beta between the plasticizing device and the horizontal line is preferably 1-5 degrees.
Further, the screw head 5 is of an asymmetric fillet structure.
The invention has the advantages that:
1. according to the invention, the plasticizing device is obliquely arranged, and bubbles in the molten liquid plastic can move towards the tail part of the charging barrel when the screw rod works, so that the bubbles in the liquid plastic at the head part of the screw rod are effectively prevented;
2. the head of the screw rod is arranged into an asymmetric fillet structure, so that the stagnation effect of liquid plastic in the charging barrel can be effectively prevented, the extruding surface can be reduced, the height of a feeding hole of a neck mold of a blow molding machine can be reduced, and the influence of bubbles on a blow molding product can be further prevented;
3. the inclination angle of the plasticizing device is not too large, which is unfavorable for the matching adjustment of the screw driving device.
Drawings
FIG. 1 is a cross-sectional view of a prior art plasticizing device;
FIG. 2 is a cross-sectional view of the plasticizing device of the present invention;
FIG. 3 is an enlarged view of the inclination angle β of the plasticizing device of the present invention;
in the figure, 1-charging barrel, 2-screw, 3-multi-stage heating device, 4-heat preservation jacket, 5-screw head, 6-feeding device and 7-cooling jacket
Detailed Description
Example 1
An energy-saving consumption-reducing plasticizing device for a blow molding machine comprises a charging barrel 1 and a screw rod 2, wherein the screw rod 2 is positioned in the charging barrel 1; a multi-stage heating device 3 is arranged outside the charging barrel 1, and the end part of the screw 2 is a screw head 5; the plasticizing device is arranged in an inclined mode, the included angle between the plasticizing device and the horizontal line is recorded as beta, and the included angle beta is 3 degrees.
Example 2
The screw head 5 is changed from a sharp cone shape to an asymmetric round corner structure, and the rest is the same as the embodiment 1.
Comparative example 1
The plasticizing device is horizontally arranged in the background technology.
100 cosmetic bottles are produced by the plasticizing device of each of the above examples and comparative examples, the appearance of the cosmetic bottles is observed, and the probability of the cosmetic bottles with air holes on the surface is recorded;
meanwhile, the cosmetic bottle without air holes and tiny air holes on the surface and without affecting the aesthetic feeling of the product appearance is recorded as a good product, the cosmetic bottle with larger air holes and without affecting the aesthetic feeling of the product appearance is recorded as a defective product, and the secondary product rate is recorded.
| Test specimen | Probability of cosmetic bottle with air hole (%) | Defective percentage (%) |
| Example 1 | 3 | 1 |
| Example 2 | 1 | 0 |
| Comparative example 1 | 19 | 7 |
As seen from the above table, the plasticizing device is obliquely arranged, so that air holes on the surface of a product can be effectively reduced; and the head part of the screw rod is arranged into an asymmetric round angle structure, so that the influence of bubbles on a blow molding product can be further prevented.
The invention has wide application prospect in packaging high-added-value products such as luxury goods and the like, and has certain optimization effect on the appearance of the products.
And finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (7)
1. The utility model provides an effectively prevent blowing machine plastify device of bubble which characterized in that: the plasticizing device comprises a material barrel (1) and a screw (2), wherein the screw (2) is positioned in the material barrel (1); a multi-stage heating device (3) is arranged outside the charging barrel (1), and the end part of the screw (2) is a screw head (5); the plasticizing device is arranged in an inclined mode, and an included angle formed between the plasticizing device and a horizontal line is recorded as beta.
2. A plasticizing device as defined in claim 1, wherein: the multi-stage heating device (3) is coated by a heat-insulating jacket (4).
3. A plasticizing device as defined in claim 1, wherein: the tail part of the screw rod (2) is provided with a feeding device (6) and a cooling jacket (7).
4. A plasticizing device as defined in claim 1, wherein: the end part of the screw rod (2) is connected with a mouth mold and a blow pin.
5. A plasticizing device as defined in claim 1, wherein: the end part of the screw rod (2) is connected with a machine head and a nozzle.
6. A plasticizing device as defined in claim 1, wherein: the included angle beta is 1-5 degrees.
7. A plasticizing device as defined in any of claims 1-6, characterized in that: the screw head (5) is of an asymmetric fillet structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110649719.8A CN113414964A (en) | 2021-06-10 | 2021-06-10 | Blowing machine plasticizing device capable of effectively preventing air bubbles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110649719.8A CN113414964A (en) | 2021-06-10 | 2021-06-10 | Blowing machine plasticizing device capable of effectively preventing air bubbles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113414964A true CN113414964A (en) | 2021-09-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110649719.8A Pending CN113414964A (en) | 2021-06-10 | 2021-06-10 | Blowing machine plasticizing device capable of effectively preventing air bubbles |
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| CN (1) | CN113414964A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0976312A (en) * | 1995-09-18 | 1997-03-25 | Japan Steel Works Ltd:The | Screw head in a screw type plasticizing device |
| CN103862644A (en) * | 2014-03-21 | 2014-06-18 | 苏州益群模具有限公司 | Injection molding machine of automobile injection mould |
| CN104325619A (en) * | 2014-11-27 | 2015-02-04 | 浙江泰瑞重型机械有限公司 | Hydraulic screw rod plasticizing device |
| CN108340533A (en) * | 2018-01-03 | 2018-07-31 | 卓苏旭 | A kind of screw injection melding injection molding machine |
| CN108705697A (en) * | 2018-05-15 | 2018-10-26 | 江苏申源新材料有限公司 | A kind of screw extruder |
| CN209738220U (en) * | 2019-01-29 | 2019-12-06 | 帕尔安精密技术(武汉)有限公司 | Improved generation plasticizing device in injection molding machine |
-
2021
- 2021-06-10 CN CN202110649719.8A patent/CN113414964A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0976312A (en) * | 1995-09-18 | 1997-03-25 | Japan Steel Works Ltd:The | Screw head in a screw type plasticizing device |
| CN103862644A (en) * | 2014-03-21 | 2014-06-18 | 苏州益群模具有限公司 | Injection molding machine of automobile injection mould |
| CN104325619A (en) * | 2014-11-27 | 2015-02-04 | 浙江泰瑞重型机械有限公司 | Hydraulic screw rod plasticizing device |
| CN108340533A (en) * | 2018-01-03 | 2018-07-31 | 卓苏旭 | A kind of screw injection melding injection molding machine |
| CN108705697A (en) * | 2018-05-15 | 2018-10-26 | 江苏申源新材料有限公司 | A kind of screw extruder |
| CN209738220U (en) * | 2019-01-29 | 2019-12-06 | 帕尔安精密技术(武汉)有限公司 | Improved generation plasticizing device in injection molding machine |
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