CN218020041U - HDPE pipeline extrudes and uses compound aircraft nose with high flame retardant grade - Google Patents
HDPE pipeline extrudes and uses compound aircraft nose with high flame retardant grade Download PDFInfo
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- CN218020041U CN218020041U CN202222403388.2U CN202222403388U CN218020041U CN 218020041 U CN218020041 U CN 218020041U CN 202222403388 U CN202222403388 U CN 202222403388U CN 218020041 U CN218020041 U CN 218020041U
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Abstract
The utility model relates to a HDPE pipeline extrusion composite machine head with high flame-retardant grade, which belongs to the field of plastic pipeline production equipment and comprises a first extrusion die head, wherein the first extrusion die head comprises a first die body in a cavity shape, and two ends of the first die body are both provided with openings to form a feed inlet and a discharge outlet; a core column is arranged in the first die body, the core column is fixedly arranged in the first die body through a core column support, one end of the core column extends to the discharge port, and an extrusion port is formed between the core column and the discharge port; one end at the discharge gate place on the first die body is formed with the installation face, and detachably is provided with second extrusion die head on the installation face, offers on the second extrusion die head with extrude mouthful intercommunication and the extrusion passageway that aligns, extrude the outside expansion of one end that the passageway kept away from and extrude the mouth and form the shaping section, still seted up material passageway on the second extrusion die head, material passageway intercommunication shaping section sets up. The utility model discloses can effectively practice thrift manufacturing cost.
Description
Technical Field
The utility model relates to a plastic conduit production facility field, in particular to HDPE pipeline extrudes and uses compound aircraft nose with high flame retardant rating.
Background
The HDPE pipe is a pipe made of high-density polyethylene, has a series of advantages of stable and reliable interface, impact resistance, cracking resistance, aging resistance, corrosion resistance and the like, is widely applied, but has a low oxygen index, is inflammable, and generates a large amount of molten drops with ignition capacity during combustion, thereby bringing great fire hazard.
In order to improve the flame retardant property of the HDPE pipe, the surface of the HDPE pipe is coated with a flame retardant layer, the HDPE pipe is extruded by using a double-layer extrusion die in the coating process, the flame retardant layer and the HDPE are extruded simultaneously, and the flame retardant layer is coated on the HDPE pipe. However, the double-layer extruder head can only extrude the tubular product of double-layer structure, the HDPE pipe that requires the same as the internal diameter only needs to be used in low temperature environment, when the fire-retardant layer of cladding is not needed, then can't extrude solitary HDPE pipe with this double-layer extrusion die head, need use the extrusion die head of another individual layer to extrude processing to solitary HDPE pipe, to the production of the HDPE tubular product of same internal diameter demand promptly, the producer need prepare two different extruders and extrude processing, with two kinds of HDPE tubular products that processing has fire-retardant cladding and does not have fire-retardant cladding, this has increased producer's equipment cost undoubtedly.
SUMMERY OF THE UTILITY MODEL
Based on the above, a composite machine head for extruding the HDPE pipeline with high flame retardant rating is needed to be provided, which comprises a first extrusion die head, wherein the first extrusion die head comprises a first die body in a cavity shape, and two ends of the first die body are both provided with openings to form a feeding hole and a discharging hole; a core column is arranged in the first die body, the core column is fixedly arranged in the first die body through a core column support, one end of the core column extends to the discharge hole, and an extrusion hole is formed between the core column and the discharge hole; one end of a discharge port on the first die body is provided with a mounting surface, a second extrusion die head is detachably arranged on the mounting surface, an extrusion channel communicated with the extrusion port and aligned with the extrusion port is formed in the second extrusion die head, the extrusion channel is far away from one end of the extrusion port and is outwards expanded to form a molding section, a material channel is further formed in the second extrusion die head and is communicated with the molding section.
The utility model discloses in, first extrusion die head adopts prior art's individual layer plastic tubing extrusion die head, be used for extruding the HDPE pipe of individual layer, its extrusion process does, a raw materials for making the HDPE pipe enters into first die body from the discharge gate, then, the raw materials enters into the extrusion mouth behind the stem support, and extruded at the extrusion mouth, obtain pipy individual layer HDPE pipe, wherein, through installing second extrusion die head in the installation face department of first extrusion die head, and the extrusion channel of second extrusion die head that makes communicates and aligns with the extrusion mouth, then can make the individual layer HDPE pipe that first extrusion die head extrudes can enter into the extrusion channel smoothly and move, when treating that the HDPE pipe moves to shaping section, the fire-retardant material of the molten state that is extruded into in the shaping section from the material passageway can be cladding on the HDPE pipe promptly, form fire-retardant coating, thereby can obtain the HDPE pipe with fire-retardant HDPE coating, improve the fire-retardant grade of HDPE pipe; wherein, when the HDPE pipe which is not required to be coated with the flame-retardant coating layer needs to be produced, the second extrusion die head is only required to be detached from the first extrusion die head.
That is the utility model discloses a compound aircraft nose both can produce the HDPE pipeline that the cladding has fire-retardant coating, also can produce the HDPE pipe that does not wrap fire-retardant coating, when the HDPE pipeline to same internal diameter demand carries out production, and manufacturing factory need not additionally to purchase in addition, is used for producing the extruder that does not have the HDPE pipeline of the fire-retardant coating of cladding specially, can effectively reduce manufacturing factory's equipment cost.
Furthermore, the second extrusion die head comprises a second die body in a cavity shape, openings are formed in two ends of the second die body, a flow guide body is arranged in the second die body, an extrusion channel is formed between the surface of the flow guide body and the inner side wall of the cavity in the second extrusion die head, and the flow guide body is close to one end of the core column and is attached to the end portion of the core column.
Wherein, after the individual layer HDPE pipeline that first extrusion die extruded entered into the access way, the water conservancy diversion can be located the inboard of individual layer HDPE pipeline, played the supporting role to individual layer HDPE pipeline, at this moment, when fire-retardant material was crowded into the one-tenth section, fire-retardant material can not make individual layer HDPE pipeline take place the deformation to the extrusion of individual layer HDPE pipeline, but can closely attached on individual layer HDPE pipeline, wait to cool off the back and form fire-retardant coating.
Furthermore, a first threaded hole is formed in the end portion of one end, located at the discharge port, of the core column, and a mounting stud matched with the first threaded hole is arranged at one end, facing the first threaded hole, of the flow guide body and corresponds to the first threaded hole.
Wherein, the stem of the first extrusion die head is used as a mounting structure of the flow guide body, and the flow guide body is detachably mounted on the stem through a mounting stud thereon.
Furthermore, the outer side surface of the second mold body is fixedly provided with a mounting ring, the mounting ring is attached to the mounting surface and is in sealing fit with the mounting surface, a mounting hole is formed in the mounting ring, the mounting surface is provided with a second threaded hole corresponding to the mounting hole, and the mounting ring is detachably mounted on the mounting surface through a fastening bolt penetrating through the mounting hole and the second threaded hole.
The mounting ring is a mounting structure of the second extrusion die head, and after the mounting ring is mounted on a mounting surface of the first extrusion die head through the fastening bolts, corresponding end parts of the first extrusion die head and the second extrusion die head are mutually attached to form a sealing structure.
Furthermore, the material channel comprises an annular material guide cavity arranged on the die body, the annular material guide cavity is arranged around the extrusion channel, and one end of the forming section facing the mounting surface is communicated with the annular material guide cavity; and a feed inlet is further formed in the surface of the second die body and communicated with the annular material guide cavity.
The charging opening is used for being connected with additional conveying equipment, such as screw conveying equipment, through a rigid pipeline, so that the flame retardant material in a molten state is extruded into the annular material guide cavity from the charging opening and then enters the forming section.
Furthermore, the sectional area of the annular material guiding cavity is gradually reduced from outside to inside, the charging opening is communicated with the outer side end of the annular material guiding cavity, and one end, facing the mounting surface, of the forming section is communicated with the inner side end of the annular material guiding cavity.
The outer end of the annular material guiding cavity is the end part of the annular material guiding cavity far away from the extrusion channel, the inner end of the annular material guiding cavity is the end part of the annular material guiding cavity close to the extrusion channel, the charging opening is communicated with the outer end of the annular material guiding cavity, the forming section is communicated with the inner end of the annular material guiding cavity, after the flame-retardant material enters the annular material guiding cavity, the flame-retardant material is extruded in the process of moving from the outer end of the annular material guiding cavity to the inner end, air in the flame-retardant material is extruded away, the fact that a cavity exists in a flame-retardant coating layer formed on a single-layer HDPE pipe can be avoided, and the flame-retardant effect of the flame-retardant material is guaranteed. The flow and the flow velocity of the flame-retardant material entering the annular guide cavity are adjusted according to the sectional area of the communicating structure of the annular guide cavity and the forming section, so that the flame-retardant layer and the single-layer HDPE pipeline formed in the forming section can move synchronously, relative movement between the flame-retardant layer and the single-layer HDPE pipeline is avoided, and the flame-retardant layer can be tightly combined on the single-layer HDPE pipeline.
The principle and effect of the present invention will be further explained below with reference to the above technical solutions and the accompanying drawings:
the utility model discloses a compound aircraft nose both can produce the HDPE pipeline that the cladding has fire-retardant coating, also can produce the HDPE pipe that does not wrap fire-retardant coating, and to the production of the HDPE pipeline of same internal diameter demand, the producer need not additionally to purchase the other extruder that is used for producing the HDPE pipeline that does not have the fire-retardant coating of cladding specially, can effectively reduce the equipment cost of producer.
Drawings
FIG. 1 is a schematic structural diagram of a high flame retardant grade HDPE pipe extrusion composite head according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a first extrusion die according to an embodiment of the present invention.
Description of the reference numerals:
11-a first die body, 12-a feed port, 13-a core column, 14-an extrusion port, 15-a mounting surface, 16-a first threaded hole, 21-a second die body, 22-a flow guide body, 23-an extrusion channel, 24-a mounting ring, 25-an annular material guide cavity, 26-a feed port, 27-a forming section and 3-a fastening bolt.
Detailed Description
To facilitate understanding of those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and examples:
referring to fig. 1-2, a composite head for extruding HDPE pipes with high flame retardant rating comprises a first extrusion die head, wherein the first extrusion die head comprises a first die body 11 in a cavity shape, and two ends of the first die body 11 are both provided with openings to form a feed inlet 12 and a discharge outlet; a core column 13 is arranged in the first mold body 11, the core column 13 is fixedly arranged in the first mold body 11 through a core column 13 support, one end of the core column 13 extends to the discharge hole, and an extrusion hole 14 is formed between the core column 13 and the discharge hole; an installation surface 15 is formed at one end where a discharge port on the first die body 11 is located, a second extrusion die head is detachably arranged on the installation surface 15, an extrusion channel 23 communicated with and aligned with the extrusion port 14 is formed in the second extrusion die head, one end, far away from the extrusion port 14, of the extrusion channel 23 is outwards expanded to form a forming section 27, a material channel is further formed in the second extrusion die head, and the material channel is communicated with the forming section 27.
The utility model discloses in, first extrusion die head adopts prior art's individual layer plastic tubing extrusion die head, be used for extruding the HDPE pipe of individual layer, its extrusion process does, a raw materials for making the HDPE pipe enters into first die body 11 from the discharge gate, then, the raw materials enters into extrusion opening 14 after stem 13 support, and extruded at extrusion opening 14, obtain pipy individual layer HDPE pipe, wherein, through installing second extrusion die head in the installation face 15 department of first extrusion die head, and make the extrusion channel 23 and the extrusion opening 14 intercommunication of second extrusion die head and align, then can make the individual layer HDPE pipe that first extrusion die head extrudes can enter into extrusion channel 23 smoothly and remove, when treating that the HDPE pipe removes to shaping section 27 department, the melting state's that is extruded into from the material passageway in shaping section 27 promptly cladding on can be on the HDPE pipe, form fire-retardant, thereby can obtain the HDPE pipe with fire-retardant coating, improve the fire-retardant grade of HDPE pipe; when the HDPE pipe which is not coated with the flame-retardant coating layer needs to be produced, the second extrusion die head is only required to be detached from the first extrusion die head.
Namely the utility model discloses a compound aircraft nose both can produce the HDPE pipeline that the cladding has fire-retardant coating, also can produce the HDPE pipe that does not wrap fire-retardant coating, when carrying out production to the HDPE pipeline of same internal diameter demand, the manufacture factory need not additionally to purchase in addition, is used for producing the extruder that does not have the HDPE pipeline of the fire-retardant coating of cladding specially, can effectively reduce manufacture factory's equipment cost.
In one embodiment, the second extrusion die head includes a second die body 21 in a cavity shape, two ends of the second die body 21 are both opened, a flow guide body 22 is arranged in the second die body 21, an extrusion channel 23 is formed between the surface of the flow guide body 22 and the inner side wall of the cavity in the second extrusion die head, and one end of the flow guide body 22 close to the core column 13 is attached to the end of the core column 13.
In this embodiment, after the individual layer HDPE pipeline that first extrusion die extruded entered into the access way, baffle 22 can be located the inboard of individual layer HDPE pipeline, played the supporting role to individual layer HDPE pipeline, at this moment, when fire-retardant material was extruded into shaping section 27 in, the extrusion of fire-retardant material to individual layer HDPE pipeline can not make individual layer HDPE pipeline take place deformation, but can closely attached on individual layer HDPE pipeline, wait to form fire-retardant coating after cooling.
In one embodiment, a first threaded hole 16 is formed in an end portion of one end of the core column 13 located at the discharge outlet, and a mounting stud matched with the first threaded hole 16 is arranged at one end of the flow guide body 22 facing the first threaded hole 16 and corresponding to the first threaded hole 16.
In this embodiment, stem 13 of the first extrusion die serves as a mounting structure for current carrier 22, and current carrier 22 is detachably mounted on stem 13 via mounting studs thereon.
In one embodiment, a mounting ring 24 is further fixedly arranged on the outer side surface of the second mold body 21, the mounting ring 24 is attached to the mounting surface 15 and is in sealing fit with the mounting surface 15, a mounting hole is formed in the mounting ring 24, a second threaded hole is formed in the mounting surface 15 corresponding to the mounting hole, and the mounting ring 24 is detachably mounted on the mounting surface 15 through a fastening bolt 3 penetrating through the mounting hole and the second threaded hole.
In this embodiment, the mounting ring 24 is a mounting structure of the second extrusion die, and after the mounting ring is mounted on the mounting surface 15 of the first extrusion die by the fastening bolts, the corresponding ends of the first extrusion die and the second extrusion die are attached to each other to form a sealing structure.
In one embodiment, the material passage includes an annular material guiding cavity 25 opened on the mold body, the annular material guiding cavity 25 is disposed around the extrusion passage 23, and one end of the molding section 27 facing the mounting surface 15 is communicated with the annular material guiding cavity 25; the surface of the second mold body 21 is further provided with a feed inlet 26, and the feed inlet 26 is communicated with the annular material guide cavity 25.
Wherein the feeding opening 26 is used for connecting with an additional conveying device, such as a screw conveying device, through a rigid pipeline, so as to extrude the flame retardant material in a molten state into the annular guide cavity 25 from the feeding opening 26 and into the forming section 27.
In one embodiment, the sectional area of the annular material guiding cavity 25 is gradually reduced from outside to inside, the charging opening 26 is communicated with the outer end of the annular material guiding cavity 25, and one end of the forming section 27 facing the mounting surface 15 is communicated with the inner end of the annular material guiding cavity 25.
In this embodiment, the outer end of the annular material guiding cavity 25, that is, the end of the annular material guiding cavity 25 far away from the extrusion channel 23, and the inner end of the annular material guiding cavity 25, that is, the end of the annular material guiding cavity 25 close to the extrusion channel 23, enable the material feeding port 26 to communicate with the outer end of the annular material guiding cavity 25, and enable the forming section 27 to communicate with the inner end of the annular material guiding cavity 25, so that after the flame-retardant material enters the annular material guiding cavity 25, the flame-retardant material is extruded in the process of moving from the outer end of the annular material guiding cavity 25 to the inner end, thereby expelling air in the flame-retardant material, avoiding the existence of a cavity in the flame-retardant coating layer formed on the single-layer HDPE pipe, and ensuring the flame-retardant effect. The flow and the flow velocity of the flame-retardant material entering the annular guide cavity 25 are adjusted according to the sectional area of the communicating structure of the annular guide cavity 25 and the forming section 27, so that the flame-retardant layer formed in the forming section 27 and the single-layer HDPE pipeline can move synchronously, relative movement between the flame-retardant layer and the single-layer HDPE pipeline is avoided, and the flame-retardant layer can be tightly combined on the single-layer HDPE pipeline.
The above embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (6)
1. The composite machine head for extruding the HDPE pipeline with the high flame-retardant grade comprises a first extrusion die head, wherein the first extrusion die head comprises a cavity-shaped first die body, and openings are formed in two ends of the first die body to form a feeding hole and a discharging hole; a core column is arranged in the first die body, the core column is fixedly arranged in the first die body through a core column support, one end of the core column extends to the discharge hole, and an extrusion hole is formed between the core column and the discharge hole; the extrusion die is characterized in that an installation surface is formed at one end of the first die body where the discharge port is located, a second extrusion die head is detachably arranged on the installation surface, an extrusion channel communicated with and aligned with the extrusion port is formed in the second extrusion die head, one end, far away from the extrusion port, of the extrusion channel expands outwards to form a molding section, a material channel is further formed in the second extrusion die head, and the material channel is communicated with the molding section.
2. The composite head for extruding the HDPE pipe with the high flame retardant rating as claimed in claim 1, wherein the second extrusion die head comprises a second die body in a cavity shape, both ends of the second die body are open, a flow guiding body is disposed in the second die body, an extrusion channel is formed between the surface of the flow guiding body and the inner side wall of the cavity in the second extrusion die head, and one end of the flow guiding body close to the stem is attached to the end of the stem.
3. The composite machine head for extruding HDPE pipe with high flame retardant rating as claimed in claim 2, wherein a first threaded hole is opened at an end of the stem at the discharge port, and a mounting stud matched with the first threaded hole is provided at an end of the flow guide body facing the first threaded hole corresponding to the first threaded hole.
4. The high flame retardant grade HDPE pipe extrusion composite head as claimed in claim 3, wherein a mounting ring is fixedly arranged on the outer side surface of the second die body, the mounting ring is attached to the mounting surface and is in sealing fit with the mounting surface, a mounting hole is formed in the mounting ring, a second threaded hole is formed in the mounting surface corresponding to the mounting hole, and the mounting ring is detachably mounted on the mounting surface through a fastening bolt penetrating through the mounting hole and the second threaded hole.
5. The high flame retardant grade HDPE pipe extrusion composite head according to claim 4, wherein the material passage comprises an annular guide cavity opened on the die body, the annular guide cavity is arranged around the extrusion passage, and one end of the forming section facing the mounting surface is communicated with the annular guide cavity; and a feeding port is further formed in the surface of the second die body and communicated with the annular material guide cavity.
6. The high flame retardant grade HDPE pipe extrusion composite head according to claim 5, wherein the sectional area of the annular material guiding cavity is gradually reduced from outside to inside, the charging opening is communicated with the outer end of the annular material guiding cavity, and one end of the forming section facing the mounting surface is communicated with the inner end of the annular material guiding cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222403388.2U CN218020041U (en) | 2022-09-09 | 2022-09-09 | HDPE pipeline extrudes and uses compound aircraft nose with high flame retardant grade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222403388.2U CN218020041U (en) | 2022-09-09 | 2022-09-09 | HDPE pipeline extrudes and uses compound aircraft nose with high flame retardant grade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218020041U true CN218020041U (en) | 2022-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222403388.2U Active CN218020041U (en) | 2022-09-09 | 2022-09-09 | HDPE pipeline extrudes and uses compound aircraft nose with high flame retardant grade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218020041U (en) |
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2022
- 2022-09-09 CN CN202222403388.2U patent/CN218020041U/en active Active
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