CN109177112B - Continuous extrusion machine head with stripes on surface of hollow blow molding product - Google Patents
Continuous extrusion machine head with stripes on surface of hollow blow molding product Download PDFInfo
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- CN109177112B CN109177112B CN201811050837.1A CN201811050837A CN109177112B CN 109177112 B CN109177112 B CN 109177112B CN 201811050837 A CN201811050837 A CN 201811050837A CN 109177112 B CN109177112 B CN 109177112B
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- runner
- die
- wall surface
- grooves
- cylinder
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- 238000001125 extrusion Methods 0.000 title claims abstract description 37
- 238000000071 blow moulding Methods 0.000 title claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 49
- 230000007704 transition Effects 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000003746 surface roughness Effects 0.000 claims description 3
- 238000010101 extrusion blow moulding Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a continuous extrusion machine head with stripes on the surface of a hollow blow molding product, belongs to the technical field of extrusion blow molding, and solves the problems that a tube blank is easy to crack and the surface quality is low when the traditional extrusion machine head is used for producing a product with a plurality of stripes on the surface; through set up the transition runner in the surface stripe line reposition of redundant personnel ring for each export pressure of second material is the same, thereby a plurality of stripe line sizes that form are unanimous, and the goods surface is smoother, pleasing to the eye, and goods surface quality is higher.
Description
Technical Field
The invention relates to the technical field of extrusion blow molding, in particular to a continuous extrusion machine head with a plurality of stripes on the surface of a hollow blow molding product.
Background
Existing continuous extruder heads typically suffer from the following drawbacks when producing articles with multiple stripes on the surface: the color melting material enters a surface stripe line flow dividing block from an external flow passage, the surface stripe line flow dividing block breaks a tubular blank formed by an internal flow passage, the color melting material is filled into the broken part of the tubular blank, and finally the tubular blank with color stripes is formed; however, in the structure, because the internal flow channel is not a complete tube blank, the tube blank product with stripes is easy to crack, the drop test is not passed, and raw materials are wasted; secondly, the hollow blow molding product is subjected to secondary spraying after being processed, so that the color fading phenomenon of the surface stripes of the processed product can occur, and finally the product quality is influenced.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a continuous extrusion machine head capable of forming a hollow blow molding product with a strip on the surface, wherein the hollow blow molding product has higher surface quality and a complete tube blank.
In order to achieve the purpose of the invention, the invention adopts the following technical scheme:
a striped continuous extrusion head for hollow blow molded articles comprising:
an upper cylinder body, on which a first material inlet is arranged;
The lower cylinder is fixedly arranged at the lower end part of the upper cylinder, and a second material inlet is arranged on the lower cylinder;
The split shuttle is coaxially sleeved in the lower cylinder, the upper end part of the split shuttle extends into the upper cylinder, and an inner flow passage communicated with the first material inlet is formed between the outer wall surface of the split shuttle, the inner wall surface of the upper cylinder and the inner wall surface of the lower cylinder;
the surface streak line diverter ring is coaxially sleeved in the lower cylinder and positioned at the outer side of the diverter shuttle, a plurality of second material outlets are arranged on the inner peripheral wall surface of the surface streak line diverter ring, the plurality of second material outlets are connected with the outer wall surface of the inner runner, and the surface streak line diverter ring is provided with a transition runner which is communicated with the second material inlet and the plurality of second material outlets;
the extrusion die is fixedly arranged at the lower end part of the lower cylinder body, and an extrusion channel communicated with the internal flow channel is arranged in the extrusion die.
In the above technical solution, preferably, the plurality of second material outlets are uniformly arranged along the circumferential direction.
In the above technical solution, preferably, the transition runner includes at least one lower runner groove disposed on a lower end surface of the surface streak diverter ring, at least one upper runner groove disposed on an upper end surface of the surface streak diverter ring, and a runner hole penetrating the surface streak diverter ring and communicating the upper runner groove with the lower runner groove.
In the above technical solution, preferably, the lower end face of the surface streak line splitter ring is provided with a plurality of lower runner grooves, and the plurality of lower runner grooves are uniformly arranged along a radial direction.
In the above technical solution, preferably, the lower flow channel grooves located at the inner side of the two adjacent lower flow channel grooves are narrower than the lower flow channel grooves located at the outer side.
In the above technical solution, preferably, a plurality of the upper runner grooves are formed in an upper end face of the surface stripe line splitter ring, and the plurality of the upper runner grooves are uniformly arranged along a radial direction.
In the above technical solution, preferably, the upper runner grooves located on the inner side of the two adjacent upper runner grooves are narrower than the lower runner grooves located on the outer side.
In the above technical solution, preferably, the surface stripe line diverter ring is provided with a plurality of runner holes in a penetrating manner, and the aperture of the runner hole located at the inner side of the runner holes is smaller than the aperture of the runner hole located at the outer side of the runner holes.
In the above technical scheme, preferably, the extrusion die comprises a die and a core die coaxially sleeved on the inner side of the die and fixed with the split shuttle, and the extrusion channel is formed between the inner wall surface of the die and the outer wall surface of the core die.
In the above technical solution, preferably, the surface roughness of the upper and lower runner grooves is 0.4-0.8.
Compared with the prior art, the invention has the following beneficial effects: according to the scheme, the surface stripe line diverter ring is arranged, the plurality of second material outlets are arranged on the inner peripheral wall surface of the surface stripe line diverter ring and are connected with the outer wall surface of the inner flow channel, so that stripe lines are formed on the outer surface of the tube blank, and the integrity of the tube blank is not required to be damaged; through set up the transition runner in the surface stripe line reposition of redundant personnel ring for each export pressure of second material is the same, thereby a plurality of stripe line sizes that form are unanimous, and the goods surface is smoother, pleasing to the eye, and goods surface quality is higher.
Drawings
FIG. 1 is a schematic perspective view of the internal structure of a continuous extrusion head with stripes on the surface of a hollow blow molded product;
FIG. 2 is an enlarged schematic view of a portion of FIG. 1 at A;
FIG. 3 is a schematic top view of the surface cord diverter ring of the present invention;
FIG. 4 is a schematic cross-sectional view taken along line B-B in FIG. 3;
FIG. 5 is a schematic bottom view of the surface cord diverter ring of the present invention;
Wherein: 100. a continuous extrusion machine head with stripes on the surface of the hollow blow molding product; 1. an upper cylinder; 11. a first material inlet; 2. a lower cylinder; 21. a second material inlet; 3. a shunt shuttle; 31. an internal flow passage; 4. a surface striped line shunt ring; 41. a second material outlet; 42. a transition flow passage; 421. a lower flow channel groove; 422. an upper flow channel groove; 423. a flow passage hole; 5. an extrusion die; 51. a die; 52. a core mold; 53. extruding the channel.
Detailed Description
In order to describe the technical content, constructional features, achieved objects and effects of the invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
The continuous extrusion machine head 100 with stripes on the surface of the hollow blow molding product comprises an upper cylinder 1, a lower cylinder 2, a split shuttle 3, a surface stripe line split ring 4 and an extrusion die 5. The following will specifically explain each structural composition and its working principle with reference to fig. 1 to 5; the vertical and horizontal positional relationship in this embodiment corresponds to the positional relationship of the continuous extrusion head shown in fig. 1, the axial direction is the vertical extending direction of the upper cylinder/lower cylinder/diverter and surface stripe line diverter ring, and the circumferential direction is the radial radiation direction of the upper cylinder/lower cylinder/diverter and surface stripe line diverter ring.
As shown in fig. 1 and 2, the external structure of the continuous extrusion head 100 with stripes on the surface of the hollow blow molding product in the present case comprises an upper cylinder 1, a lower cylinder 2 and an extrusion die 5, wherein the lower cylinder 2 is fixedly arranged on the lower end of the upper cylinder 1, and the extrusion die 5 is fixedly arranged on the lower end of the lower cylinder 2. The inner structure comprises a shunt shuttle 3 and a surface stripe line shunt ring 4, wherein the shunt shuttle 3 is coaxially sleeved in the lower cylinder 2, the upper end part of the shunt shuttle 3 extends upwards into the upper cylinder 1, an inner flow channel 31 is jointly formed between the outer wall surface of the shunt shuttle 3 and the inner wall surface of the upper cylinder 1 and between the outer wall surface of the lower cylinder 2, and a first material inlet 11 is arranged on the upper cylinder 1 and is communicated with the inner flow channel 31, so that a first material can enter the inner flow channel 31 through the first material inlet 11 and is shunted through the shunt shuttle 3 to form an integral tubular material blank. The surface streak line diverter ring 4 is coaxially sleeved in the lower cylinder 2 and is positioned at the outer side of the diverter 3, a plurality of second material outlets 41 are arranged on the inner peripheral wall surface of the surface diverter ring 4, and the second material outlets 41 are connected with the outer wall surface of the inner runner 31 and are used for forming a plurality of streak lines on the outer surface of a tubular blank formed by the first material. The extrusion die 5 comprises a die 51 and a core die 52 coaxially sleeved on the inner side of the die 51 and fixed with the split shuttle 3, wherein an extrusion channel 53 is formed between the inner wall surface of the die 51 and the outer wall surface of the core die 52, and the extrusion channel 53 is communicated with the inner flow channel 31, so that a tubular blank with a plurality of streaks can be extruded out of a product through the extrusion channel 53.
As shown in fig. 3 to 5, the surface streak splitter ring 4 has a transition flow passage 42 communicating the second material inlet 21 with these second material outlets 41. Specifically, in the present embodiment, 16 second material outlets 41 are formed in the inner peripheral wall surface of the surface streak line splitter ring 4; the transition runner 42 comprises 3 lower runner grooves 421 arranged on the lower end surface of the surface streak line splitter ring 4, 12 upper runner grooves 422 arranged on the upper end surface of the surface streak line splitter ring 4, and 5 runner holes penetrating through the surface streak line splitter ring 4 and communicating the upper runner grooves 422 with the lower runner grooves 421; wherein, the lower flow channel grooves 421 located at the inner side of the adjacent two lower flow channel grooves 421 are narrower than the lower flow channel grooves 421 located at the outer side; the upper flow path grooves 422 located at the inner side of the adjacent two upper flow path grooves 422 are narrower than the upper flow path grooves 422 located at the outer side; and the aperture of the runner hole 423 located at the inner side of the plurality of runner holes 423 is smaller than that of the runner hole 423 located at the outer side, so that the runner structure gradually narrows and becomes shallower when seen from the lower end face of the surface stripe line splitter ring 4 to the upper end face of the surface stripe line splitter ring 4, thereby increasing the extrusion pressure of the second material, ensuring that the second material can smoothly flow into the inner runner 31 along each runner groove through the second material outlet 41, thereby forming a plurality of stripe lines on the outer surface of the tubular billet of the first material, and finally extruding the product together through the extrusion channel 53. In order to increase the smoothness of each flow channel groove, so that the second material can smoothly enter the inner flow channel 31 to be combined with the first material, the surface roughness of each flow channel groove is 0.4-0.8, preferably 0.4. The flow passage structure which is narrowed and shallower step by step also enables the stripe lines formed by the second material on the outer surface of the tube blank of the first material to be consistent in size, smoother and more attractive, and the surface quality of the product is higher. In other embodiments, the number of the upper and lower runner grooves and the runner holes is not limited to the specific number described above, but may be single or plural, so that the number of the second material outlets of the surface stripe line splitter ring is preferably even and uniformly arranged along the circumferential direction thereof in order to make the formed stripe line more attractive.
The principle of operation of the present hollow blow molded article surface striped continuous extrusion head 100 is as follows: the first material enters the inner runner 31 through the first material inlet 11, forms an integral tubular blank through the shunting action of the shunt shuttle 3, enters the transition runner 42 through the second material inlet 21, reaches the inner runner 31 through the second material outlet 41 to be combined with the first material, forms a plurality of streak lines on the outer surface of the tubular blank, and then the tubular blank with the streak lines is extruded together through the extrusion channel 53.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (3)
1. A striped continuous extrusion head for blow molding a hollow article, comprising:
An upper cylinder (1) provided with a first material inlet (11);
the lower cylinder (2) is fixedly arranged at the lower end part of the upper cylinder (1), and a second material inlet (21) is arranged on the lower cylinder (2);
the split shuttle (3) is coaxially sleeved in the lower cylinder (2), the upper end part of the split shuttle (3) extends into the upper cylinder (1), and an inner runner (31) communicated with the first material inlet (11) is formed between the outer wall surface of the split shuttle (3) and the inner wall surface of the upper cylinder (1) and between the outer wall surface of the lower cylinder (2);
The surface streak line diverter ring (4) is coaxially sleeved in the lower cylinder body (2) and is positioned at the outer side of the diverter shuttle (3), a plurality of second material outlets (41) are arranged on the inner peripheral wall surface of the surface streak line diverter ring (4), a plurality of second material outlets (41) are connected with the outer wall surface of the inner runner (31), the surface streak line diverter ring (4) is provided with a transition runner (42) communicated with the second material inlet (21) and a plurality of second material outlets (41), the transition runner (42) comprises at least one lower runner groove (421) arranged on the lower end surface of the surface streak line diverter ring (4), at least one upper runner groove (422) arranged on the upper end surface of the surface streak line diverter ring (4), runner holes (423) penetrating through the surface streak line diverter ring (4) and communicated with the upper runner grooves (422), a plurality of second material outlets (41) are uniformly distributed along the circumference of the surface streak line diverter ring (4) and are positioned at the outer sides of the runner holes (423), the upper runner grooves (422) positioned on the inner side of two adjacent upper runner grooves (422) are narrower than the upper runner grooves (422) positioned on the outer side; the lower runner grooves (421) positioned on the inner side of two adjacent lower runner grooves (421) are narrower than the lower runner grooves (421) positioned on the outer side;
the extrusion die (5) is fixedly arranged at the lower end part of the lower cylinder body (2), and an extrusion channel (53) communicated with the internal flow channel (31) is arranged in the extrusion die (5).
2. The hollow blow molded article surface striped continuous extrusion head according to claim 1, wherein: the extrusion die (5) comprises a die (51) and a core die (52) coaxially sleeved on the inner side of the die (51) and fixed with the split shuttle (3), and an extrusion material channel (53) is formed between the inner wall surface of the die (51) and the outer wall surface of the core die (52).
3. The hollow blow molded article surface striped continuous extrusion head according to claim 1, wherein: the surface roughness of the upper runner groove and the lower runner groove is 0.4-0.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811050837.1A CN109177112B (en) | 2018-09-10 | 2018-09-10 | Continuous extrusion machine head with stripes on surface of hollow blow molding product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811050837.1A CN109177112B (en) | 2018-09-10 | 2018-09-10 | Continuous extrusion machine head with stripes on surface of hollow blow molding product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109177112A CN109177112A (en) | 2019-01-11 |
| CN109177112B true CN109177112B (en) | 2024-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811050837.1A Active CN109177112B (en) | 2018-09-10 | 2018-09-10 | Continuous extrusion machine head with stripes on surface of hollow blow molding product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109177112B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112192823B (en) * | 2020-09-17 | 2022-05-24 | 江苏亨通光电股份有限公司 | Double-heterochromatic strip sheath and extrusion die thereof |
| CN114670422B (en) * | 2022-05-31 | 2022-08-23 | 张家港市意久机械有限公司 | Combined shunt shuttle in multicolor die head |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB997212A (en) * | 1962-12-31 | 1965-07-07 | Ici Ltd | The production of striped thermoplastic extrudates |
| CN2763015Y (en) * | 2005-01-17 | 2006-03-08 | 湖南省华云机器厂 | Extrusion die for producing inner lining material of soft tube |
| CN208682070U (en) * | 2018-09-10 | 2019-04-02 | 苏州金纬中空技术有限公司 | The continuous extruder head of Blow Molded Articles surface striped |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2613981B1 (en) * | 1987-04-15 | 1989-10-13 | Swisscab E A Schoen Sa | METHOD AND HEAD FOR EXTRUDING PROFILES IN SYNTHETIC MATERIAL HAVING COLORED STRIPS |
| CN101635191B (en) * | 2009-05-21 | 2011-07-06 | 宁波表面工程研究中心 | Three-color wire cable jacket extrusion mold |
| CN101635190B (en) * | 2009-05-21 | 2011-10-05 | 沈群华 | Two-color cable sheath extruded mould with improved structure |
| CN103587094A (en) * | 2012-08-17 | 2014-02-19 | 张家港市龙华机械有限公司 | Two-cavity double-color strip die head |
-
2018
- 2018-09-10 CN CN201811050837.1A patent/CN109177112B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB997212A (en) * | 1962-12-31 | 1965-07-07 | Ici Ltd | The production of striped thermoplastic extrudates |
| CN2763015Y (en) * | 2005-01-17 | 2006-03-08 | 湖南省华云机器厂 | Extrusion die for producing inner lining material of soft tube |
| CN208682070U (en) * | 2018-09-10 | 2019-04-02 | 苏州金纬中空技术有限公司 | The continuous extruder head of Blow Molded Articles surface striped |
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| Publication number | Publication date |
|---|---|
| CN109177112A (en) | 2019-01-11 |
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