CN216579101U - Pipe extrusion die and pipe forming equipment - Google Patents
Pipe extrusion die and pipe forming equipment Download PDFInfo
- Publication number
- CN216579101U CN216579101U CN202122385367.8U CN202122385367U CN216579101U CN 216579101 U CN216579101 U CN 216579101U CN 202122385367 U CN202122385367 U CN 202122385367U CN 216579101 U CN216579101 U CN 216579101U
- Authority
- CN
- China
- Prior art keywords
- die
- core
- sleeve
- assembly
- spiral
- 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)
Abstract
The utility model discloses a pipe extrusion die and pipe forming equipment, comprising: an outer mold sleeve assembly; the spiral body is provided with a main flow passage and a spiral groove, a first branch flow passage is formed between the spiral groove and the outer die sleeve assembly, and the inlet end of the first branch flow passage is communicated with the main flow passage; the mold core assembly is arranged in the outer mold sleeve assembly, is connected with the spiral body and is provided with a forming channel; the spiral body is also provided with a second branch flow channel, the inlet end of the second branch flow channel is communicated with the main flow channel, and the outlet end of the first branch flow channel and the outlet end of the second branch flow channel are both communicated with the forming channel. The plastic fluid flows to the first sub-runner and the second sub-runner through the main runner respectively and then converges to the forming channel, so that the pipe forming is completed, the weld marks are eliminated, and the high-yield and high-quality pipe products can be produced at relatively low extrusion pressure.
Description
Technical Field
The utility model relates to the field related to pipe forming technology, in particular to a pipe extrusion die and pipe forming equipment.
Background
In the prior art, a single-layer spiral structure is generally adopted in the design of a common 250PE pipe extrusion die. In order to balance the production output with the extrusion pressure and the product with the cost, the spiral groove of the extrusion die is designed to be thicker and deeper, so that higher production output can be obtained under the condition of lower extrusion pressure. The problems with the above-designed structure are: under the condition of lower pressure, the inner wall of the pipe is shown as an obvious welding line strip, so that the appearance defect of the pipe product is caused, and the market popularization of the pipe product is influenced.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides the pipe extrusion die which is beneficial to eliminating the welding marks and improving the product quality.
The utility model also provides a pipe forming device applying the pipe extrusion die.
A pipe extrusion die according to an embodiment of the first aspect of the utility model comprises: an outer mold sleeve assembly; the spiral body is arranged in the outer mold sleeve assembly, a main flow channel for introducing plastic fluid and a spiral groove positioned on the outer wall of the spiral body are arranged on the spiral body, a first branch flow channel is formed between the spiral groove and the outer mold sleeve assembly, and the inlet end of the first branch flow channel is communicated with the main flow channel; the mold core assembly is arranged in the outer mold sleeve assembly, is connected with the spiral body and is provided with a forming channel; the spiral body is also provided with a second branch flow channel, the inlet end of the second branch flow channel is communicated with the main flow channel, and the outlet end of the first branch flow channel and the outlet end of the second branch flow channel are communicated with the forming channel.
The pipe extrusion die provided by the embodiment of the utility model at least has the following beneficial effects: by adopting the structure, the plastic fluid flows to the first sub-runner and the second sub-runner through the main runner respectively and then converges to the forming channel, thereby completing the pipe forming. Compared with the prior art, the spiral groove design is not needed to be thicker and deeper, the production mode of single-feeding double-runner extrusion is realized by combining the first runner and the second runner, the weld mark is favorably eliminated, and high-yield and high-quality pipe products can be produced at relatively lower extrusion pressure.
According to some embodiments of the utility model, the spiral body is provided with a cooling channel for introducing cold air, and the cooling channel is communicated with the forming channel.
According to some embodiments of the utility model, one end of the spiral body is provided with a positioning convex part, the positioning convex part abuts against one end surface of the outer die sleeve component, the positioning convex part is connected with the outer die sleeve component through a second screw, and the positioning convex part can limit the spiral body to move relative to the outer die sleeve component.
According to some embodiments of the utility model, the outer die sleeve assembly comprises a spiral outer sleeve, a contraction sleeve and a die which are connected in sequence, the spiral body is positioned on the spiral outer sleeve, one part of the die core assembly is positioned on the spiral outer sleeve, and the other part of the die core assembly is positioned on the contraction sleeve and the die.
According to some embodiments of the utility model, the shrink sleeve is connected to the helical casing by a third screw.
According to some embodiments of the utility model, the outer die sleeve assembly further comprises a first pressure plate connected to the shrink sleeve by a third screw, and the first pressure plate is capable of restricting the die from disengaging the shrink sleeve.
According to some embodiments of the utility model, the mold core assembly comprises a fixed mold core and a replaceable mold core, the fixed mold core is located in the spiral outer sleeve and the shrinkage sleeve, the fixed mold core is connected with the spiral body, the replaceable mold core is located in the mouth mold, and the replaceable mold core is connected with the fixed mold core.
According to some embodiments of the utility model, the mold core assembly further comprises a second pressing plate, the second pressing plate is located in the fixed mold core, the second pressing plate, the fixed mold core and the spiral body are sequentially connected through a fourth screw, and the second pressing plate can limit the fixed mold core from being separated from the spiral body.
According to some embodiments of the utility model, the mold core assembly further comprises a positioning rod, the positioning rod penetrates through the replaceable mold core, the positioning rod is connected with the second pressing plate through a fifth screw bolt, and the positioning rod can limit the replaceable mold core to be separated from the fixed mold core.
A pipe forming apparatus according to an embodiment of the second aspect of the present invention includes the pipe extrusion die according to the embodiment of the first aspect.
The pipe forming equipment provided by the embodiment of the utility model at least has the following beneficial effects: the pipe forming equipment is provided with the pipe extrusion die, and plastic fluid flows to the first sub-runner and the second sub-runner through the main runner respectively and then converges to the forming channel, so that pipe forming is completed. Compared with the prior art, the spiral groove design is not needed to be thicker and deeper, the production mode of single-feeding double-runner extrusion is realized by combining the first runner and the second runner, the weld mark is favorably eliminated, and high-yield and high-quality pipe products can be produced at relatively lower extrusion pressure.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural view of a pipe extrusion die according to an embodiment of the present invention;
reference numerals:
the device comprises an outer die sleeve assembly 10, a spiral outer sleeve 11, a shrinkage sleeve 12, a die 13 and a first pressure plate 14;
a spiral body 20, a main runner 21, a spiral groove 22, a second branch runner 23,
a first shunt passage 30, a mold core assembly 40, a fixed mold core 41, an interchangeable mold core 42, a second pressing plate 43, a positioning rod 44 and a forming passage 50;
a connecting section 60 and a feed inlet 61.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not interpreted as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
As shown in fig. 1, a pipe extrusion die according to an embodiment of a first aspect of the present invention includes: an outer die case assembly 10; the spiral body 20 is arranged in the outer die sleeve assembly 10, a main flow passage 21 for introducing plastic fluid and a spiral groove 22 positioned on the outer wall of the spiral body 20 are arranged on the spiral body 20, a first branch flow passage 30 is formed between the spiral groove 22 and the outer die sleeve assembly 10, and the inlet end of the first branch flow passage 30 is communicated with the main flow passage 21; the mold core assembly 40 is arranged in the outer mold sleeve assembly 10, the mold core assembly 40 is connected with the spiral body 20, and a forming channel 50 is arranged between the mold core assembly 40 and the outer mold sleeve assembly 10; wherein, the spiral body 20 is further provided with a second branch flow passage 23, an inlet end of the second branch flow passage 23 is communicated with the main flow passage 21, and an outlet end of the first branch flow passage 30 and an outlet end of the second branch flow passage 23 are both communicated with the forming passage 50.
It should be noted that, in some embodiments of the present invention, the present invention further includes a connecting section 60, the connecting section 60 is connected to the spiral body 20 through a first screw, a feeding hole 61 for feeding plastic fluid is disposed on the connecting section 60, and the feeding hole 61 is communicated with the main channel 21.
According to the pipe extrusion die of the embodiment of the utility model, by adopting the structure, the plastic fluid flows to the first sub-runner 30 and the second sub-runner 23 through the main runner 21 respectively and then is converged to the forming channel 50, so that the pipe forming is completed. Compared with the prior art, the spiral groove 22 does not need to be designed thick and deep, the production mode of single-feeding double-flow-channel extrusion can be realized by combining the first sub-flow channel 30 and the second sub-flow channel 23, the weld marks can be eliminated, and high-yield, high-quality pipe products can be produced at relatively low extrusion pressure.
It can be understood that, as shown in fig. 1, in some embodiments of the present invention, the spiral body 20 is provided with a cooling channel 24 for introducing cold air, the cooling channel 24 is communicated with the forming channel 50, and an exhaust fan can be externally connected to the cooling channel 24 to feed the cold air into the cooling channel 24, so as to accelerate the cooling and forming of the tube in the forming channel 50.
As shown in fig. 1, in some embodiments of the present invention, one end of the spiral body 20 is provided with a positioning protrusion 25, the positioning protrusion 25 abuts against one end surface of the outer mold sleeve assembly 10, the positioning protrusion 25 is connected with the outer mold sleeve assembly 10 through a second screw, and the positioning protrusion 25 can limit the movement of the spiral body 20 relative to the outer mold sleeve assembly 10, and has a compact structure, good stability, and easy assembly, disassembly, and maintenance.
As shown in fig. 1, in some embodiments of the present invention, the outer die case assembly 10 includes a spiral outer case 11, a shrink sleeve 12, and a die 13 connected in sequence, the spiral body 20 is located at the spiral outer case 11, a portion of the core assembly 40 is located at the spiral outer case 11, and another portion of the core assembly 40 is located at the shrink sleeve 12 and the die 13. Adopt above-mentioned structure, the plastics fluid flows through the first minute runner 30 between spiral overcoat 11 and the spirochaeta 20 and the second minute runner 23 of spirochaeta 20, converge to shaping passageway 50, and cool off with higher speed through shrink sleeve 12, and make tubular product further compress closely knit, then bush 13 and the stretch forming cooperation of mold core assembly 40 are with the tubular product of production regulation wall thickness and appearance, bubble production has been reduced, improve product gloss, accommodation is wide, simple to operate in the use, the tubular product quality has great improvement than before, can be better satisfy customer's requirement.
As shown in fig. 1, in some embodiments of the present invention, the shrink sleeve 12 is connected to the spiral outer sleeve 11 by a third screw, which is simple in structure and easy to disassemble, assemble and maintain.
As shown in fig. 1, in some embodiments of the present invention, the outer die set assembly 10 further includes a first pressing plate 14, the first pressing plate 14 is connected to the shrink sleeve 12 by a fourth screw, and the first pressing plate 14 can limit the die 13 from being separated from the shrink sleeve 12, so that the structure is compact and the stability is good.
In some embodiments of the present invention, the core assembly 40 includes a fixed core 41 and an exchangeable core 42, the fixed core 41 is located inside the spiral casing 11 and the shrink sleeve 12, the fixed core 41 is connected to the spiral body 20, the exchangeable core 42 is located inside the die 13, and the exchangeable core 42 is connected to the fixed core 41. By adopting the structure, the pipe with the corresponding wall thickness and appearance can be produced by replacing the neck mold 13 and the replaceable mold core 42, and the application range is wide.
As shown in fig. 1, in some embodiments of the present invention, the core assembly 40 further includes a second pressing plate 43, the second pressing plate 43 is located in the fixed core 41, the second pressing plate 43, the fixed core 41 and the spiral body 20 are sequentially connected by a fourth screw, and the second pressing plate 43 can limit the fixed core 41 from separating from the spiral body 20, so that the structure is reasonable and compact, the assembly, disassembly and maintenance are convenient, the stability is good, and the loose is not easy.
As shown in fig. 1, in some embodiments of the present invention, the mold core assembly 40 further includes a positioning rod 44, the positioning rod 44 penetrates through the exchangeable mold core 42, the positioning rod 44 is connected to the second pressing plate 43 through a fifth screw, and the positioning rod 44 can limit the exchangeable mold core 42 to be separated from the fixed mold core 41. By adopting the structure, the positioning rod 44 fixes the relative position of the replaceable mold core 42 and the die 13, and limits the replaceable mold core 42 to be separated from the fixed mold core 41, so that the structure is compact and the stability is good.
It should be noted that there are gaps between the fixed core 41 and the spiral jacket 11 and the shrink sleeve 12 and between the exchangeable core 42 and the die 13 to form the forming channel 50.
A pipe forming apparatus according to an embodiment of the second aspect of the present invention includes the pipe extrusion die of the embodiment of the first aspect described above.
According to the pipe forming device provided by the embodiment of the utility model, the pipe extrusion die is arranged, and the plastic fluid respectively flows to the first branch runner 30 and the second branch runner 23 through the main runner 21 and then is converged to the forming channel 50, so that the pipe forming is completed. Compared with the prior art, the spiral groove 22 does not need to be designed thick and deep, the production mode of single-feeding double-flow-channel extrusion can be realized by combining the first sub-flow channel 30 and the second sub-flow channel 23, the weld marks can be eliminated, and high-yield, high-quality pipe products can be produced at relatively low extrusion pressure.
It should be noted that the installation and connection of the mold and the pipe forming equipment are in a flange connection mode, and the mold head flange bolts are used for locking and connecting.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The utility model is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the utility model, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (10)
1. Pipe extrusion tooling, its characterized in that includes:
an outer jacket assembly (10);
the spiral body (20) is arranged in the outer die sleeve assembly (10), a main flow channel (21) for introducing plastic fluid and a spiral groove (22) located on the outer wall of the spiral body (20) are arranged on the spiral body (20), a first branch flow channel (30) is formed between the spiral groove (22) and the outer die sleeve assembly (10), and the inlet end of the first branch flow channel (30) is communicated with the main flow channel (21);
the mold core assembly (40) is arranged in the outer mold sleeve assembly (10), the mold core assembly (40) is connected with the spiral body (20), and a forming channel (50) is arranged between the mold core assembly (40) and the outer mold sleeve assembly (10);
the spiral body (20) is further provided with a second branch flow channel (23), the inlet end of the second branch flow channel (23) is communicated with the main flow channel (21), and the outlet end of the first branch flow channel (30) and the outlet end of the second branch flow channel (23) are both communicated with the forming channel (50).
2. The pipe extrusion die of claim 1, wherein a cooling channel (24) for introducing cold air is arranged on the spiral body (20), and the cooling channel (24) is communicated with the forming channel (50).
3. The pipe extrusion die according to claim 1, wherein one end of the spiral body (20) is provided with a positioning protrusion (25), the positioning protrusion (25) abuts against one end face of the outer die sleeve assembly (10), the positioning protrusion (25) is connected with the outer die sleeve assembly (10) through a second screw, and the positioning protrusion (25) can limit the spiral body (20) to move relative to the outer die sleeve assembly (10).
4. The pipe extrusion die of claim 1, wherein the outer die sleeve assembly (10) comprises a spiral outer sleeve (11), a shrinkage sleeve (12) and a die (13) which are connected in sequence, the spiral body (20) is positioned on the spiral outer sleeve (11), one part of the die core assembly (40) is positioned on the spiral outer sleeve (11), and the other part of the die core assembly (40) is positioned on the shrinkage sleeve (12) and the die (13).
5. Pipe extrusion die according to claim 4, characterized in that the shrink sleeve (12) is connected with the helical outer sleeve (11) by means of a third screw.
6. The tube extrusion die according to claim 4, characterized in that the outer die sleeve assembly (10) further comprises a first pressure plate (14), the first pressure plate (14) is connected with the shrink sleeve (12) by a third screw, and the first pressure plate (14) can limit the die (13) from being detached from the shrink sleeve (12).
7. The pipe extrusion die of claim 4, wherein said core assembly (40) comprises a fixed core (41) and an exchangeable core (42), said fixed core (41) being located inside said spiral jacket (11) and said shrink sleeve (12), said fixed core (41) being connected to said spiral body (20), said exchangeable core (42) being located inside said die (13), and said exchangeable core (42) being connected to said fixed core (41).
8. The pipe extrusion die of claim 7, wherein the die core assembly (40) further comprises a second pressing plate (43), the second pressing plate (43) is located in the fixed die core (41), the second pressing plate (43), the fixed die core (41) and the spiral body (20) are sequentially connected through a fourth screw, and the second pressing plate (43) can limit the fixed die core (41) from separating from the spiral body (20).
9. The pipe extrusion die of claim 8, wherein the die core assembly (40) further comprises a positioning rod (44), the positioning rod (44) penetrates through the replaceable die core (42), the positioning rod (44) is connected with the second pressing plate (43) through a fifth screw, and the positioning rod (44) can limit the replaceable die core (42) to be separated from the fixed die core (41).
10. Pipe forming apparatus, comprising a pipe extrusion die according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122385367.8U CN216579101U (en) | 2021-09-29 | 2021-09-29 | Pipe extrusion die and pipe forming equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122385367.8U CN216579101U (en) | 2021-09-29 | 2021-09-29 | Pipe extrusion die and pipe forming equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216579101U true CN216579101U (en) | 2022-05-24 |
Family
ID=81639206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122385367.8U Active CN216579101U (en) | 2021-09-29 | 2021-09-29 | Pipe extrusion die and pipe forming equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216579101U (en) |
-
2021
- 2021-09-29 CN CN202122385367.8U patent/CN216579101U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113787693A (en) | Pipe extrusion die and pipe forming equipment | |
| JP2002531297A (en) | Injection molded cooling core with spiral groove | |
| CN200967268Y (en) | Plastic section bar surface coextruding mould | |
| CN216579101U (en) | Pipe extrusion die and pipe forming equipment | |
| CN106182679A (en) | The preparation method of the double-deck double-colored reinforced composite pipe of ribbing | |
| CN102909829B (en) | Full hot runner forming die for injector outer sheath | |
| CN202037849U (en) | Novel mold special for acrylonitrile butadiene styrene (ABS) pipes | |
| CN210233937U (en) | Gas-assisted thin-wall small-section pipe extrusion molding die | |
| CN212472330U (en) | Flow channel system applied to extrusion die | |
| CN2596518Y (en) | Self centring electric wire and cable plastic extruding mold | |
| CN112092308A (en) | Injection molding pipe fitting mold | |
| CN205735914U (en) | A kind of energy-saving plastic extruder that die head is improved | |
| CN202147384U (en) | Long-service life extrusion head and automatic extrusion system comprising same | |
| CN210820828U (en) | Double-layer composite injection mold | |
| CN111941777A (en) | High efficiency injection mold produces cooling device | |
| CN218535561U (en) | Extrusion production die for pipes | |
| CN211941956U (en) | Pipe extruder die | |
| CN220841363U (en) | Extruder die head | |
| CN205853309U (en) | A kind of extrusion die for producing handrail | |
| CN202147382U (en) | Co-extruding plastic composite pipe mould | |
| CN212764419U (en) | Precise injection molding die for automobile cabin wire harness fuse box | |
| CN209336076U (en) | A kind of blow molding mould for plastic bottle | |
| CN205291541U (en) | Screw shaping subassembly of plastic fuel tank blowing mould | |
| CN213198643U (en) | Department's section of thick bamboo inner needle cooling body | |
| CN219381421U (en) | Cooling die for plastic product production shaping |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |