CN215969977U - High fire-retardant PVC film is blowing machine aircraft nose for manufacturing - Google Patents
High fire-retardant PVC film is blowing machine aircraft nose for manufacturing Download PDFInfo
- Publication number
- CN215969977U CN215969977U CN202122366880.2U CN202122366880U CN215969977U CN 215969977 U CN215969977 U CN 215969977U CN 202122366880 U CN202122366880 U CN 202122366880U CN 215969977 U CN215969977 U CN 215969977U
- Authority
- CN
- China
- Prior art keywords
- die head
- head
- retardant pvc
- blow molding
- molding machine
- 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.)
- Active
Links
Images
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
The utility model relates to the technical field of plastic decorative film processing, in particular to a blow molding machine head for manufacturing a high-flame-retardant PVC decorative film. The blow molding machine head for manufacturing the high flame-retardant PVC decorative film is characterized in that an inner die head and an outer die head are matched, a gap left between the inner die head and the outer die head is used as a flow channel of molten plastic, and the molten plastic flows from bottom to top in the flow channel; simultaneously, the choked flow piece that sets up on interior die head outer wall shunts fused plastic to increased the mixed degree under the different material molten state, solved traditional blowing machine and mixed abundant inadequately to multiple material, caused the problem that the material flow vestige persists.
Description
Technical Field
The utility model relates to the technical field of plastic decorative film processing, in particular to a blow molding machine head for manufacturing a high-flame-retardant PVC film.
Background
With the increasing enhancement of environmental protection, safety and health consciousness of people, countries around the world begin to use environment-friendly flame-retardant products as the key point of research, development and application, and higher environmental protection and flame-retardant requirements are also put forward on PVC films.
Because the high flame-retardant PVC decorative film is composed of PVC resin as a main raw material, and the halogen-free liquid phosphate flame retardant and the environment-friendly plasticizer are added, how to better melt and mix the three materials is a technical difficulty in the manufacturing process of the PVC decorative film.
The blow molding machine is used as the most important device in the processing of decorative films, and the working principle of the blow molding machine is that a plurality of materials which are heated and melted are extruded from a die head die orifice of a die head through a blow molding machine head, are pressed by a herringbone plate after being blown up and cooled by an air ring, and are coiled by a traction roller to form a finished decorative film into a cylinder shape.
When the existing blow molding machine is used for mixing materials, the various materials are difficult to be ensured to be fully melted and mixed, and material flow marks are left.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a blow molding machine head for manufacturing a high-flame-retardant PVC (polyvinyl chloride) film, so as to solve the technical problems that the traditional blow molding machine head is insufficient in material mixing and has material flow marks.
In order to solve the above technical problems, the present invention provides a blow molding machine head for manufacturing a high flame retardant PVC film, comprising: an inner die head and an outer die head; the outer die head is sleeved on the periphery of the inner die head, and a gap for molten plastic to flow is reserved between the outer die head and the inner die head; a plurality of flow choking blocks which are uniformly distributed are arranged on the outer wall of the inner die head; wherein a distance is left between each of said flow-blocking pieces so as to divert the flow of molten plastic as it passes through the flow-blocking pieces in the gap; the molten plastic flows upwards from the lower end of the inner die head along the gap and flows out from the annular hole between the inner die head and the outer die head.
Further, the inner die head comprises a feeding part and an extruding part; wherein the clearance between the feeding part and the outer membrane head is larger than the clearance between the extrusion part and the outer membrane head.
Furthermore, the flow blocking block is arranged on the extrusion part and is diamond-shaped.
Further, a rotatable thread assembly is sleeved on the outer wall of the feeding part; wherein the screw assembly is connected with a rotating shaft disposed outside the head so as to push the molten plastic to move upward.
Further, the thread assembly is sequentially from bottom to top: a first threaded member, a second threaded member, and a third threaded member; the thread pitches of the first threaded part, the second threaded part and the third threaded part are reduced in sequence.
Further, a feed inlet assembly is arranged on the outer die head; the feed inlet assembly is suitable for injecting materials into a gap between the outer die head and the inner die head.
Further, the feedwell assembly includes: the first feeding hole, the second feeding hole and the third feeding hole; the first feed port corresponds to the first threaded part in position; the second feed port corresponds to the second threaded part in position; and the third feeding port corresponds to the third threaded part in position.
The utility model has the advantages that the inner die head and the outer die head are matched, a gap left between the inner die head and the outer die head is used as a flow channel of molten plastic, and the molten plastic flows from bottom to top in the flow channel; simultaneously, the choked flow piece that sets up on interior die head outer wall shunts fused plastic to increased the mixed degree under the different material molten state, solved traditional blowing machine and mixed abundant inadequately to multiple material, caused the problem that the material flow vestige persists.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of a blow molding machine head for manufacturing a high flame retardant PVC decorative film of the present invention;
FIG. 2 is a schematic structural diagram of an inner die head of the blow molding machine head for manufacturing the high flame retardant PVC decorative film;
FIG. 3 is a schematic view of a liquid flow channel model in a blow molding head for manufacturing the high flame retardant PVC decorative film.
In the figure: the die comprises an inner die head 1, a feeding part 11, an extrusion part 12, an outer die head 2, a flow blocking block 3, a first threaded part 41, a second threaded part 42, a third threaded part 43, a first feed opening 51, a second feed opening 52 and a third feed opening 53.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
Examples
As shown in fig. 1 and 2, the present embodiment provides a blowing machine head for manufacturing a high flame retardant PVC film, comprising: an inner die head 1 and an outer die head 2; the outer die head 2 is sleeved on the periphery of the inner die head 1, and a gap for molten plastic to flow is reserved between the outer die head 2 and the inner die head 1; a plurality of flow blocking blocks 3 which are uniformly distributed are arranged on the outer wall of the inner membrane head; wherein, a distance is left between each flow block 3, so that the molten plastic is divided when flowing through the flow block 3; the molten plastic flows upwards along the gap from the lower end of the inner die 1 and flows out from the top of the gap.
In the embodiment, optionally, the inner die head 1 and the outer die head 2 are matched, and a gap left between the inner die head 1 and the outer die head 2 is used as a flow channel of molten plastic, and the molten plastic flows from bottom to top in the flow channel; simultaneously, the choked flow piece 3 that sets up on interior die head 1 outer wall shunts fused plastic to increased the mixed degree under the different material molten state, solved traditional blowing machine and mixed abundant inadequately to multiple material, caused the problem that the material flow vestige persists.
In this embodiment, optionally, the block 3 is evenly distributed on the outer surface of the inner die head 1, when the molten plastic flows through the block 3, the molten plastic flowing along the outer peripheral wall of the inner die head 1 originally is blocked by the block 3, the flow passage area is reduced, and the melt generates a certain compression ratio, so that sufficient pressure is generated, the weld mark is eliminated, the melt is uniformly plasticized, and the compactness is good.
In the present embodiment, the inner die 1 includes a feeding section 11 and an extrusion section 12; wherein the clearance between the feeding part 11 and the outer die is larger than the clearance between the extrusion part 12 and the outer die 2.
In the present embodiment, optionally, the inner die 1 includes a feeding portion 11 and an extrusion portion 12, and the gap between the feeding portion 11 and the outer die 2 is larger than the gap between the extrusion portion 12 and the outer die 2, so that the rotational flow of the molten plastic becomes balanced and steady flow.
In this embodiment, the choke block 3 is disposed on the extruding portion 12, and the choke block 3 is a diamond shape.
In this embodiment, optionally, the flow-blocking blocks 3 are disposed on the extrusion part 12, and the flow-blocking blocks 3 are diamond-shaped, so that when the molten plastic flows between the two flow-blocking blocks 3, the flow passage is narrowed and the pressure is increased.
In this embodiment, a rotatable threaded component is sleeved on the periphery of the feeding part 11; wherein the screw assembly is connected with a rotating shaft arranged outside the machine head so as to push the molten plastic to move upwards.
In the present embodiment, the screw assembly is optionally sleeved on the periphery of the feeding part 11, so that the molten plastic is conveyed upward through the screw groove by the rotation of the screw assembly.
In this embodiment, the threaded component sequentially comprises from bottom to top: a first screw 41, a second screw 42 and a third screw 43; the pitches of the first, second and third screw members 41, 42 and 43 are decreased in sequence.
In this embodiment, optionally, the pitch of the first screw member 41 is the largest to evenly distribute the molten materials, the pitch of the second screw member 42 is smaller than the pitch of the first screw member 41 to fuse two molten materials, and similarly, the pitch of the third screw member 43 is smaller than the pitch of the second screw member 42 to fuse three molten materials.
In this embodiment, a feed inlet assembly is arranged on the outer die head; the feed inlet assembly is suitable for injecting materials into a gap between the outer die head and the inner die head.
In this embodiment, the feedwell assembly includes: a first inlet 51, a second inlet 52, and a third inlet 53; the first feed inlet 51 corresponds to the position of the first screw member 41; the second feed opening 52 corresponds to the position of the second screw member 42; the third feed opening 53 corresponds in position to the third screw 43.
In this embodiment, optionally, since the three materials for manufacturing the PVC film have different melting points and the temperature increases due to friction during the rotation, when the materials are added, the materials with high melting points are preferentially added first, so that when the materials are added, the PET is injected from the first feed opening 51, the PVC is injected from the second feed opening 52, and the flame retardant is injected from the third feed opening 53, thereby avoiding partial material loss due to excessive temperature.
In conclusion, the inner die head 1 and the outer die head 2 are matched, a gap left between the inner die head 1 and the outer die head 2 is used as a flow channel of molten plastic, and the molten plastic flows from bottom to top in the flow channel; simultaneously, the choked flow piece 3 that sets up on interior die head 1 outer wall shunts fused plastic to increased the mixed degree under the different material molten state, solved traditional blowing machine and mixed abundant inadequately to multiple material, caused the problem that the material flow vestige persists.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. A blowing machine head for manufacturing a high flame-retardant PVC film is characterized by comprising:
an inner die head and an outer die head;
the outer die head is sleeved on the periphery of the inner die head, and a gap for molten plastic to flow is reserved between the outer die head and the inner die head;
a plurality of flow choking blocks which are uniformly distributed are arranged on the outer wall of the inner die head; wherein
A distance is reserved between the flow blocking blocks, so that the molten plastic flow is divided when passing through the flow blocking blocks in the gaps;
the molten plastic flows upwards along the gap from the lower end of the inner die head and flows out from the top of the gap.
2. The head of a blow molding machine for manufacturing highly flame-retardant PVC film according to claim 1,
the inner die head comprises a feeding part and an extruding part; wherein
The clearance between the feeding part and the outer membrane head is larger than the clearance between the extrusion part and the outer membrane head.
3. The head of a blow molding machine for manufacturing highly flame-retardant PVC film according to claim 1,
the flow blocking block is arranged on the extrusion part and is diamond-shaped.
4. The head of a blow molding machine for manufacturing highly flame-retardant PVC film according to claim 2,
the outer wall of the feeding part is sleeved with a rotatable threaded component; wherein
The screw assembly is connected with a rotating shaft arranged outside the machine head so as to push the molten plastic to move upwards.
5. The head of a blow molding machine for manufacturing highly flame-retardant PVC films according to claim 4,
the thread component is sequentially from bottom to top: a first threaded member, a second threaded member, and a third threaded member;
the thread pitches of the first threaded part, the second threaded part and the third threaded part are reduced in sequence.
6. The head of a blow molding machine for manufacturing highly flame-retardant PVC film according to claim 5,
a feed inlet assembly is arranged on the outer die head;
the feed inlet assembly is suitable for injecting materials into a gap between the outer die head and the inner die head.
7. The head of a blow molding machine for manufacturing highly flame-retardant PVC film according to claim 6,
the feed inlet subassembly includes: the first feeding hole, the second feeding hole and the third feeding hole;
the first feed port corresponds to the first threaded part in position;
the second feed port corresponds to the second threaded part in position;
and the third feeding port corresponds to the third threaded part in position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122366880.2U CN215969977U (en) | 2021-09-28 | 2021-09-28 | High fire-retardant PVC film is blowing machine aircraft nose for manufacturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122366880.2U CN215969977U (en) | 2021-09-28 | 2021-09-28 | High fire-retardant PVC film is blowing machine aircraft nose for manufacturing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215969977U true CN215969977U (en) | 2022-03-08 |
Family
ID=80571527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122366880.2U Active CN215969977U (en) | 2021-09-28 | 2021-09-28 | High fire-retardant PVC film is blowing machine aircraft nose for manufacturing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215969977U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117124579A (en) * | 2023-09-07 | 2023-11-28 | 徐州赫博包装有限公司 | Film production blow molding machine for ultra-pure PE packaging bag |
-
2021
- 2021-09-28 CN CN202122366880.2U patent/CN215969977U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117124579A (en) * | 2023-09-07 | 2023-11-28 | 徐州赫博包装有限公司 | Film production blow molding machine for ultra-pure PE packaging bag |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4006209A (en) | Method for additive feeding | |
| CN215969977U (en) | High fire-retardant PVC film is blowing machine aircraft nose for manufacturing | |
| US3609806A (en) | Orifice plates and worm extruders containing same | |
| US3409711A (en) | Method and apparatus for the preparation of filament reinforced synthetic resinous material | |
| US3780154A (en) | Process and apparatus for the continuous production and/or covering of extruded sections | |
| US3497582A (en) | Plastic extrusion | |
| CN106313466A (en) | Preparing method of PVC composite board | |
| JPH02120490A (en) | Strut and extrusion type assembly | |
| CN100457424C (en) | Process for producing large caliber hard polyvinyl chloride double wall corrugated pipe | |
| US6958128B2 (en) | Dynamic mixer screw tip | |
| US3528130A (en) | Extrusion apparatus | |
| CN107972252B (en) | Spiral pattern forming die for blow molding equipment and film blow molding equipment | |
| US7246936B2 (en) | Dynamic mixer screw tip | |
| US5055022A (en) | Multiple parison extrusion device for producing laminar articles | |
| US3317956A (en) | Mixing device for extruding apparatus | |
| CN111231356A (en) | Preparation method for controlling mixed color flow lines of wood-plastic composite material | |
| CN111152437A (en) | Production device for controlling mixed color flow lines of wood-plastic composite material | |
| JPS6211612A (en) | High-capacity kneading screw | |
| WO2012137665A1 (en) | Process for producing pellets of glass-fiber-reinforced thermoplastic resin composition | |
| JP2018161860A (en) | Production method of pellets of thermoplastic resin composition | |
| CN208827036U (en) | A kind of cassette height mixing screw in injection molding machine | |
| JPS5892545A (en) | Extruder for molding thermoplastic resin | |
| CN103231500A (en) | Molding method and special extrusion mold head of multilayer plastic building template | |
| JPH1128755A (en) | Production of tubular object | |
| CN220517498U (en) | Double-feed-port double-screw extruder head |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |