CN203472145U - Film blowing handpiece - Google Patents
Film blowing handpiece Download PDFInfo
- Publication number
- CN203472145U CN203472145U CN201320488959.5U CN201320488959U CN203472145U CN 203472145 U CN203472145 U CN 203472145U CN 201320488959 U CN201320488959 U CN 201320488959U CN 203472145 U CN203472145 U CN 203472145U
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- CN
- China
- Prior art keywords
- runners
- runner
- core rod
- handpiece
- film
- 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.)
- Expired - Fee Related
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a film blowing handpiece, relates to a handpiece for a film blower unit and aims to solve the problems that materials cannot be uniformly supplied, a temperature layering effect emerges and the thickness of a film is non-uniform because an inlet of each of a plurality of spiral runners distributed on the outer surface of a mold core of the conventional film blowing handpiece is communicated with a straight runner. A main runner is arranged at the lower end of the mold core along the center; a plurality of branch material feeding runners are arranged on the side wall, which corresponds to the main runner, of the mold core; a plurality of spiral runners are arranged on the outer wall of the mold core; the inlet ends of the spiral runners are positioned at the lower end of the mold core; the number of the branch material feeding runners is the same as that of the spiral runners; the inlet end of each branch material feeding runner is communicated with the main runner; the outlet end of each branch material feeding runner is positioned between inlets of two adjacent spiral runners and is communicated with the inlets of two adjacent spiral runners respectively through branch spiral runners. The film blowing handpiece disclosed by the utility model is used on the film blower unit.
Description
Technical field:
The utility model relates to a kind of for the head on inflation film unit.
Background technology:
The core rod outer surface of existing blown-film die is distributed with several helical flow paths, and the import of each helical flow path is communicated with a straight channel, as shown in Figure 3; This structure causes feed inhomogeneous, has thermal stratification effect, causes the problem of uneven film thickness.
Utility model content:
The utility model provides a kind of blown-film die for the problems referred to above.
A kind of blown-film die, described blown-film die comprises overcoat and core rod, coat suit is on core rod, the lower end edge center of described core rod is provided with sprue, the core rod sidewall corresponding with sprue is provided with several charging runners, the outer wall of described core rod is provided with several helical flow paths, the arrival end of each helical flow path is positioned at the lower end of core rod, the quantity of charging runner is identical with the quantity of helical flow path, the entrance point of each charging runner communicates with sprue, the port of export of each charging runner is between adjacent two helical flow path entrances, and the entrance that the port of export of each charging runner is adjacent two helical flow paths communicates by helical shunt road respectively.
Above-mentioned a kind of blown-film die, described each charging runner is downward-sloping inclined flow passage.
The utility model has the advantages that:
The utility model port of export of a runner is communicated with the entrance of helical flow path entrance that the port of export that is improved to a runner is adjacent two helical flow paths communicate (for two), thoroughly solved the inhomogeneous problem of feed, avoid thermal stratification effect, made the film thickness that blows out even.
Accompanying drawing explanation:
Fig. 1 is overall structure cutaway view of the present utility model (core rod 2 on center line the right is not for cuing open state), and Fig. 2 is the top view of Fig. 1, and Fig. 3 is the structure cutaway view of existing blown-film die.
The specific embodiment:
Embodiment 1:
A kind of blown-film die, see Fig. 1 and Fig. 2, blown-film die comprises overcoat 1 and core rod 2, overcoat 1 is sleeved on core rod 2, the lower end edge center of core rod 2 is provided with sprue 3, core rod 2 sidewalls corresponding with sprue 3 are provided with several charging runners 4, the outer wall of core rod 2 is provided with several helical flow paths 5, the arrival end of each helical flow path 5 is positioned at the lower end of core rod 2, the quantity of charging runner 4 is identical with the quantity of helical flow path 5, the entrance point of each charging runner 4 communicates with sprue 3, the port of export of each charging runner 4 is between adjacent two helical flow path 5 entrances, and the entrance that the port of export of each charging runner 4 is adjacent two helical flow paths 5 communicates by helical shunt road 6 respectively.Each charging runner 4 is downward-sloping inclined flow passage.It is more smooth and easy that inclined flow passage flows melt in head, greatly shortened the holdup time of melt in runner, reduced the transit time of changing material.
Claims (2)
1. a blown-film die, described blown-film die comprises overcoat (1) and core rod (2), overcoat (1) is sleeved on core rod (2), the lower end edge center of described core rod (2) is provided with sprue (3), core rod (2) sidewall corresponding with sprue (3) is provided with several charging runners (4), the outer wall of described core rod (2) is provided with several helical flow paths (5), the arrival end of each helical flow path (5) is positioned at the lower end of core rod (2), it is characterized in that: the quantity of charging runner (4) is identical with the quantity of helical flow path (5), the entrance point of each charging runner (4) communicates with sprue (3), the port of export of each charging runner (4) is positioned between adjacent two helical flow paths (5) entrance, and the entrance that the port of export of each charging runner (4) is adjacent two helical flow paths (5) communicates by helical shunt road (6) respectively.
2. a kind of blown-film die according to claim 1, is characterized in that: described each charging runner (4) is downward-sloping inclined flow passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320488959.5U CN203472145U (en) | 2013-08-12 | 2013-08-12 | Film blowing handpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320488959.5U CN203472145U (en) | 2013-08-12 | 2013-08-12 | Film blowing handpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203472145U true CN203472145U (en) | 2014-03-12 |
Family
ID=50220545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320488959.5U Expired - Fee Related CN203472145U (en) | 2013-08-12 | 2013-08-12 | Film blowing handpiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203472145U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085103A (en) * | 2014-06-16 | 2014-10-08 | 大连橡胶塑料机械股份有限公司 | Machine head flow channel corner non-dead-angle structure |
| CN107498840A (en) * | 2016-11-02 | 2017-12-22 | 郑伟春 | A kind of die head of film blowing machine structure |
-
2013
- 2013-08-12 CN CN201320488959.5U patent/CN203472145U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085103A (en) * | 2014-06-16 | 2014-10-08 | 大连橡胶塑料机械股份有限公司 | Machine head flow channel corner non-dead-angle structure |
| CN104085103B (en) * | 2014-06-16 | 2017-02-08 | 大连橡胶塑料机械有限公司 | Machine head flow channel corner non-dead-angle structure |
| CN107498840A (en) * | 2016-11-02 | 2017-12-22 | 郑伟春 | A kind of die head of film blowing machine structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20150812 |
|
| EXPY | Termination of patent right or utility model |