CN216579130U - Extrusion die for extruding three-layer pipe - Google Patents
Extrusion die for extruding three-layer pipe Download PDFInfo
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- CN216579130U CN216579130U CN202122599761.1U CN202122599761U CN216579130U CN 216579130 U CN216579130 U CN 216579130U CN 202122599761 U CN202122599761 U CN 202122599761U CN 216579130 U CN216579130 U CN 216579130U
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Abstract
The utility model discloses an extrusion die for extruding a three-layer pipe, which comprises: the outer die body is provided with an outer layer melt channel, an inner layer melt channel and a middle layer feed inlet, and the middle layer feed inlet is used for being connected with an extruder; the distributor is positioned on the outer surface of the outer die body and is provided with an inner-layer feed inlet and an outer-layer feed inlet which are used for being connected with another extruder, an outer-layer distribution channel communicated with the inner-layer feed inlet and the outer-layer feed inlet, and an inner-layer distribution channel communicated with the inner-layer feed inlet and the outer-layer feed inlet; the flow control assembly is arranged between the outer die body and the distributor and is provided with a first flow control valve communicated with the outer layer distribution channel and the outer layer melt channel and a second flow control valve communicated with the inner layer distribution channel and the inner layer melt channel. The utility model has good universality and can adjust the thickness ratio of the inner layer and the outer layer, thereby meeting the requirements of customers.
Description
Technical Field
The utility model relates to the technical field of extrusion dies, in particular to an extrusion die for extruding a three-layer pipe.
Background
In the production of the three-layer co-extrusion PVC pipe, two extruders are used for supplying melt to an extrusion die, so that the three-layer PVC pipe with fixed specification can be produced.
Structurally, the extrusion die comprises an outer die body, an outer layer ring die matched with the outer die body to form an outer layer channel, a middle layer ring die matched with the outer layer ring die to form a middle layer channel, and an inner layer ring die matched with the middle layer ring die to form an inner layer channel.
And secondly, an inner-layer distributor and an outer-layer distributor are arranged on the radial outer surface of the outer die body, the inner-layer distributor and the outer-layer distributor are provided with a first feed port, an outer-layer distribution channel communicated with the first feed port and an inner-layer distribution channel communicated with the first feed port, the outer-layer channel of the outer-layer distribution channel is communicated, and the inner-layer distribution channel is communicated with the inner-layer channel.
Moreover, the end face of the outer die body is provided with a second feeding channel, and the second feeding channel is communicated with the middle layer channel.
During extrusion, one extruder supplies melt to the first feeding hole, the other extruder supplies melt to the second feeding hole, so that the melt passes through the outer layer channel, the middle layer channel and the inner layer channel, and finally, the PVC pipe with the thickness of three layers, namely the outer layer, the middle layer and the inner layer, is formed.
However, the existing extrusion dies have poor universality, and can only extrude a pipe with a single inner and outer layer thickness.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the extrusion die for extruding the three-layer pipe has good universality, and the thickness ratio of the inner layer to the outer layer can be adjusted, so that the requirements of customers are met.
An extrusion die for extruding a three-layer tube according to an embodiment of a first aspect of the utility model comprises: the outer die body is provided with an outer layer melt channel, an inner layer melt channel and a middle layer feed inlet, and the middle layer feed inlet is used for being connected with an extruder; the distributor is positioned on the outer surface of the outer die body and is provided with an inner layer feed inlet and an outer layer feed inlet which are used for being connected with another extruder, an outer layer distribution channel communicated with the inner layer feed inlet and the outer layer feed inlet, and an inner layer distribution channel communicated with the inner layer feed inlet and the outer layer feed inlet; the flow control assembly is arranged between the outer die body and the distributor and is provided with a first flow control valve communicated with the outer layer distribution channel and the outer layer melt channel and a second flow control valve communicated with the inner layer distribution channel and the inner layer melt channel.
The extrusion die for extruding the three-layer pipe provided by the embodiment of the utility model has at least the following beneficial effects: through setting up the distributor, make the distributor have ectonexine feed inlet, outer distribution channel and inlayer distribution channel to, an extruder supplies the fuse-element to ectonexine feed inlet, and, the fuse-element can form the skin and the inlayer of tubular product through outer distribution channel and inlayer distribution channel, and then, has avoided setting up two extruders and has supplied the fuse-element respectively, simplifies the structural arrangement, reduces the spatial arrangement of extruder.
Simultaneously, through making and setting up flow control assembly between die body and the distributor, make flow control assembly have first flow control valve to, first flow control valve can communicate outer distribution passageway and outer melt passageway, just also can be through changing the latus rectum size of first flow control valve, and then, changes the flow that the outer melt passageway was flowed through to the fuse-element, just also can be convenient the outer thickness of regulation tubular product.
In addition, through making and setting up flow control assembly between external mold body and the distributor, make flow control assembly have the second flow control valve to, the second flow control valve can communicate inlayer distribution passageway and inlayer melt passageway, just also can be through changing the latus rectum size of second flow control valve, and then, changes the flow that the fuse-element flows through inlayer melt passageway, just also can be convenient the thickness of regulation tubular product inlayer.
Furthermore, through making an extruder and intermediate level feed inlet intercommunication to, the flow that the regulation extruder extrudes to the intermediate level feed inlet just can change the thickness in tubular product intermediate level, and, under the regulation of flow control subassembly, the thickness proportion of just also can be convenient regulation tubular product skin, intermediate level and inlayer.
According to some embodiments of the utility model, the flow control assembly has a first connecting tube communicating the first flow control valve with the outer layer melt channel, a second connecting tube communicating the second flow control valve with the inner layer melt channel.
The beneficial results are: through making flow control assembly have first connecting pipe and second connecting pipe to, make the installer have more operating position installation flow control valve, also made things convenient for flow control valve and fuse-element passageway intercommunication promptly, and then, reduced flow control valve's the installation degree of difficulty.
According to some embodiments of the utility model, the first connecting pipe is arranged obliquely, a high point of the first connecting pipe is arranged in a direction close to the feed opening of the middle layer, and a length direction of the outer layer melt channel extends along the length direction of the first connecting pipe.
The beneficial results are: through making first connecting pipe slope setting, make the length direction of skin fuse-element passageway extend along the length direction of first connecting pipe to, make can reduce the resistance that the fuse-element flowed through skin fuse-element passageway from first connecting pipe, also reduced the extrusion pressure of extruder, reduced the energy consumption.
According to some embodiments of the utility model, the second connecting pipe is arranged obliquely, a high point of the second connecting pipe is arranged in a direction close to the middle layer feed inlet, and a length direction of the inner layer melt channel extends along the length direction of the second connecting pipe.
The beneficial results are: through making the second connecting pipe slope setting, the length direction who makes outer layer fuse-element passageway extends along the length direction of second connecting pipe to, make can reduce the fuse-element and flow through the resistance of inlayer fuse-element passageway from the second connecting pipe, also reduced the extrusion pressure of extruder, reduce the energy consumption.
According to some embodiments of the utility model, the outer mold body is provided with a first port communicated with the outer layer melt channel and a second port communicated with the inner layer melt channel, the first port is provided with a threaded hole, and the first connecting pipe is provided with an external thread screwed with the threaded hole.
The beneficial results are: through making the external mold body be provided with first interface and second interface for first interface passes through threaded connection with first connecting pipe, thereby, has made things convenient for the dismouting of first connecting pipe.
In addition, when the flow control valve is damaged, the flow control valve can be conveniently replaced, and the outer die body cannot be damaged.
According to some embodiments of the utility model, the flow control assembly has a connecting seat connected with the distributor, the connecting seat is provided with a mounting hole, the first connecting pipe is provided with a first convex ring, and the mounting hole is used for accommodating the first convex ring to be mounted through.
The beneficial results are: through making flow control assembly have the connecting seat, make the first bulge loop installation of the first connecting pipe of mounting hole holding of connecting seat pass through to, made things convenient for first connecting pipe installation, location at the connecting seat.
According to some embodiments of the utility model, the first male ring is provided with a first female location that receives the first flow control valve installed therethrough.
The beneficial results are: through making first bulge loop be provided with first concave position, make first concave position holding first flow control valve to, when first flow control valve damaged, can be convenient change first flow control valve.
According to some embodiments of the utility model, the dispenser is provided with a second recess, the second recess accommodating the first flow control valve to fit through.
The beneficial results are: through making the distributor be provided with the concave position of second, make the concave position of second holding first flow control valve installation pass through to, when first flow control valve damaged, can be convenient change first flow control valve.
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 diagram of an extrusion die for extruding a three-layer pipe according to an embodiment of the present invention.
Reference numerals: 100-outer die body, 110-distributor, 120-flow control assembly, 130-inner and outer layer feed inlets, 140-outer layer distribution channel, 150-inner layer distribution channel, 160-outer layer melt channel, 170-inner layer melt channel, 180-middle layer feed inlet, 190-first flow control valve, 200-second flow control valve, 210-first connecting pipe, 220-second connecting pipe, 230-first interface, 240-second interface, 250-connecting seat, 260-mounting hole, 270-first convex ring, 280-first concave position and 290-second concave position.
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, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
An extrusion die for extruding a three-layer pipe according to an embodiment of the present invention will be described with reference to the accompanying drawings.
Referring to fig. 1, an extrusion die for extruding three-layer tubing according to an embodiment of the present invention includes an outer die body 100, a distributor 110, and a flow control assembly 120.
The distributor 110 is located on the outer surface of the outer mold body 100, and has an inner and outer layer feed opening 130 for connecting with another extruder, an outer layer distribution channel 140 communicating with the inner and outer layer feed opening 130, and an inner layer distribution channel 150 communicating with the inner and outer layer feed opening 130.
The outer die 100 is provided with an outer layer melt channel 160, an inner layer melt channel 170 and an intermediate layer feed port 180, and the intermediate layer feed port 180 is used for being connected with an extruder.
The flow control assembly 120, disposed between the outer mold body 100 and the distributor 110, has a first flow control valve 190 communicating the outer layer distribution channel 140 with the outer layer melt channel 160, and a second flow control valve 200 communicating the inner layer distribution channel 150 with the inner layer melt channel 170.
Through setting up distributor 110, make distributor 110 have interior outer layer feed inlet 130, outer distribution channel 140 and inlayer distribution channel 150 to, a extruder supplies the fuse-element to interior outer layer feed inlet 130, and, the fuse-element can form the skin and the inlayer of tubular product through outer distribution channel 140 and inlayer distribution channel 150, and then, has avoided setting up two extruders and has supplied the fuse-element respectively, simplifies the structural arrangement, reduces the spatial arrangement of extruder.
Meanwhile, the flow control assembly 120 is arranged between the outer die 100 and the distributor 110, and the flow control assembly 120 is provided with the first flow control valve 190, so that the first flow control valve 190 can communicate the outer layer distribution channel 140 and the outer layer melt channel 160, and the thickness of the outer layer of the pipe can be conveniently adjusted by changing the size of the drift diameter of the first flow control valve 190 and further changing the flow of the melt flowing through the outer layer melt channel 160.
In addition, the flow control assembly 120 is provided with the second flow control valve 200 by arranging the flow control assembly 120 between the outer mold 100 and the distributor 110, so that the second flow control valve 200 can communicate the inner distribution channel 150 and the inner melt channel 170, and the thickness of the inner layer of the pipe can be conveniently adjusted by changing the size of the drift diameter of the second flow control valve 200 and further changing the flow of the melt flowing through the inner melt channel 170.
Furthermore, an extruder is communicated with the middle layer feed inlet 180, so that the thickness of the middle layer of the pipe can be changed by adjusting the flow rate of the extruder extruding towards the middle layer feed inlet 180, and the thickness proportion of the outer layer, the middle layer and the inner layer of the pipe can be conveniently adjusted under the adjustment of the flow control assembly 120.
In some embodiments of the present invention, flow control assembly 120 has a first connecting tube 210 that communicates first flow control valve 190 with outer layer melt channel 160, and a second connecting tube 220 that communicates second flow control valve 200 with inner layer melt channel 170.
It can be understood that, by providing the flow control assembly 120 with the first connection pipe 210 and the second connection pipe 220, the installer has more operation positions to install the flow control valve, that is, the flow control valve is convenient to communicate with the melt channel, and the installation difficulty of the flow control valve is reduced.
In some embodiments of the present invention, first connecting tube 210 is angled, the high point of first connecting tube 210 is positioned in a direction near middle layer feed opening 180, and the length of outer layer melt channel 160 extends along the length of first connecting tube 210.
Reasonably, the first connecting pipe 210 is arranged obliquely, so that the length direction of the outer layer melt channel extends along the length direction of the first connecting pipe 210, thereby reducing the resistance of the melt flowing through the outer layer melt channel 160 from the first connecting pipe 210, reducing the extrusion pressure of the extruder and reducing the energy consumption.
In some embodiments of the present invention, the second connecting pipe 220 is disposed obliquely, the high point of the second connecting pipe 220 is disposed in a direction close to the middle layer feed opening 180, and the length direction of the inner layer melt channel 170 extends along the length direction of the second connecting pipe 220.
Reasonably, through making second connecting pipe 220 slope setting, make the length direction of outer layer fuse-element passageway extend along the length direction of second connecting pipe 220 to, make can reduce the fuse-element and follow the resistance that second connecting pipe 220 flowed through inlayer fuse-element passageway 170, also reduced the extrusion pressure of extruder, reduced the energy consumption.
In some embodiments of the present invention, the outer mold body 100 is provided with a first port 230 communicating with the outer layer melt channel 160, a second port 240 communicating with the inner layer melt channel 170, the first port 230 is provided with a threaded hole, and the first connection pipe 210 is provided with an external thread screwed with the threaded hole.
Conveniently, by providing the outer mold 100 with the first interface 230 and the second interface 240, the first interface 230 is connected with the first connection pipe 210 by a screw thread, thereby facilitating the disassembly and assembly of the first connection pipe 210.
In addition, when the flow control valve is damaged, the flow control valve can be conveniently replaced, and the outer mold body 100 cannot be damaged.
In some embodiments of the present invention, the flow control assembly 120 has a connection base 250, the connection base 250 is connected with the dispenser 110, the connection base 250 is provided with a mounting hole 260, the first connection pipe 210 is provided with a first protrusion ring 270, and the mounting hole 260 receives the first protrusion ring 270 to be mounted therethrough.
Conveniently, by providing the flow control assembly 120 with the connecting seat 250, the mounting hole 260 of the connecting seat 250 receives the first protruding ring 270 of the first connecting pipe 210 to be mounted therethrough, thereby facilitating the mounting and positioning of the first connecting pipe 210 on the connecting seat 250.
In some embodiments of the present invention, the first male ring 270 is provided with a first female location 280, the first female location 280 receiving the first flow control valve 190 installed therethrough.
It is understood that the first flow control valve 190 can be easily replaced when the first flow control valve 190 is damaged by providing the first male ring 270 with the first female location 280 such that the first female location 280 receives the first flow control valve 190.
In some embodiments of the present invention, the distributor 110 is provided with a second recess 290, the second recess 290 accommodating the first flow control valve 190 to be installed therethrough.
It will be appreciated that by providing the dispenser 110 with the second recess 290, the second recess 290 receives the first flow control valve 190 to fit through, thereby allowing the first flow control valve 190 to be easily replaced when the first flow control valve 190 is damaged.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (8)
1. An extrusion die for extruding a three-layer tube, comprising:
the outer die body (100) is provided with an outer layer melt channel (160), an inner layer melt channel (170) and a middle layer feed inlet (180), and the middle layer feed inlet (180) is used for being connected with an extruder;
the distributor (110) is positioned on the outer surface of the outer die body (100) and is provided with an inner layer feeding hole (130) and an outer layer feeding hole (130) which are used for being connected with another extruder, an outer layer distribution channel (140) communicated with the inner layer feeding hole and the outer layer feeding hole (130), and an inner layer distribution channel (150) communicated with the inner layer feeding hole and the outer layer feeding hole (130);
a flow control assembly (120) disposed between the outer mold body (100) and the distributor (110) having a first flow control valve (190) communicating the outer layer distribution passage (140) with the outer layer melt passage (160), and a second flow control valve (200) communicating the inner layer distribution passage (150) with the inner layer melt passage (170).
2. The extrusion die for extruding a three-layer tube as recited in claim 1, wherein the flow control assembly (120) has a first connecting tube (210) communicating the first flow control valve (190) with the outer layer melt channel (160), a second connecting tube (220) communicating the second flow control valve (200) with the inner layer melt channel (170).
3. The extrusion die for extruding a three-layer pipe as recited in claim 2, wherein the first connecting pipe (210) is obliquely arranged, a high point of the first connecting pipe (210) is arranged in a direction close to the middle layer feed opening (180), and a length direction of the outer layer melt channel (160) extends along a length direction of the first connecting pipe (210).
4. The extrusion die for extruding a three-layer pipe as recited in claim 2, wherein the second connecting pipe (220) is disposed obliquely, a high point of the second connecting pipe (220) is disposed in a direction close to the middle layer feed port (180), and a length direction of the inner layer melt channel (170) extends along a length direction of the second connecting pipe (220).
5. The extrusion die for extruding a three-layer pipe according to claim 2, wherein the outer die body (100) is provided with a first port (230) communicated with the outer layer melt channel (160), a second port (240) communicated with the inner layer melt channel (170), the first port (230) is provided with a threaded hole, and the first connecting pipe (210) is provided with an external thread screwed with the threaded hole.
6. The extrusion die for extruding three-layer pipes as claimed in claim 2, wherein the flow control assembly (120) has a connecting seat (250), the connecting seat (250) is connected with the distributor (110), the connecting seat (250) is provided with a mounting hole (260), the first connecting pipe (210) is provided with a first convex ring (270), and the mounting hole (260) receives the first convex ring (270) to be mounted therethrough.
7. Extrusion die for extruding a three-layer pipe according to claim 6, characterized in that said first male ring (270) is provided with a first recess (280), said first recess (280) accommodating said first flow control valve (190) to be mounted through.
8. An extrusion die for extruding a three layer pipe as in claim 1 wherein the dispenser (110) is provided with a second recess (290), the second recess (290) accommodating the first flow control valve (190) to fit through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122599761.1U CN216579130U (en) | 2021-10-27 | 2021-10-27 | Extrusion die for extruding three-layer pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122599761.1U CN216579130U (en) | 2021-10-27 | 2021-10-27 | Extrusion die for extruding three-layer pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216579130U true CN216579130U (en) | 2022-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122599761.1U Active CN216579130U (en) | 2021-10-27 | 2021-10-27 | Extrusion die for extruding three-layer pipe |
Country Status (1)
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|---|---|
| CN (1) | CN216579130U (en) |
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2021
- 2021-10-27 CN CN202122599761.1U patent/CN216579130U/en active Active
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