CN210415460U - Double-layer co-extrusion machine head die - Google Patents
Double-layer co-extrusion machine head die Download PDFInfo
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- CN210415460U CN210415460U CN201920937945.4U CN201920937945U CN210415460U CN 210415460 U CN210415460 U CN 210415460U CN 201920937945 U CN201920937945 U CN 201920937945U CN 210415460 U CN210415460 U CN 210415460U
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Abstract
本实用新型提供一种双层共挤机头模具，包括第一模座、第二模座、内层分流体、口模、芯棒、分隔件、外层分流套、第一调偏件与第二调偏件；第一模座内开设有第一腔体，第二模座内开设有第二腔体，第一模座与第二模座连接，第一腔体与第二腔体连通形成内腔；内层分流体设于内腔内，口模限位于第二腔体远离第一腔体一端，芯棒设置于内层分流体远离第一腔体一端；分隔件环绕分流体及芯棒设置，分隔件与内层分流体及芯棒间隔形成内层流道，分隔件与第二模座及口模间隔形成外层流道；第一调偏件设置于第一模座上，第一调偏件穿过第一模座的侧壁并抵靠内层分流体；第二调偏件设置于第二模座上，第二调偏件穿过第二模座的侧壁并抵靠口模。
The utility model provides a double-layer co-extrusion die head, which comprises a first die base, a second die base, an inner-layer fluid distribution, a die, a core rod, a separator, an outer-layer distribution sleeve, a first deviation adjusting part and A second biasing piece; a first cavity is opened in the first mold base, a second cavity is opened in the second mold base, the first mold base is connected with the second mold base, and the first cavity is connected with the second cavity Connected to form an inner cavity; the inner layer split fluid is arranged in the inner cavity, the die is limited to the end of the second cavity away from the first cavity, the mandrel is arranged at the end of the inner layer split fluid away from the first cavity; the separator surrounds the split fluid and the mandrel is arranged, the spacer and the inner layer divider fluid and the mandrel are spaced to form an inner layer flow channel, and the spacer is spaced from the second die base and the die to form an outer layer flow channel; the first deviation adjustment piece is arranged on the first mold base On the upper side, the first deviation adjustment piece passes through the side wall of the first mold base and abuts against the inner layer to divide the fluid; the second deviation adjustment piece is arranged on the second mold base, and the second deviation adjustment piece passes through the side of the second mold base wall and against the die.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a mechanical die technical field especially relates to a double-deck crowded aircraft nose mould altogether.
[ background of the invention ]
At present, in the production and manufacturing process of double-layer plastic pipes, a co-extrusion machine head still adopts a die structure of a single-wall pipe machine head. The adjustment of the uniformity of the wall thickness of the pipe is realized by adjusting the eccentricity of the neck ring mold, but the eccentricity of the total wall thickness of the pipe can be generally adjusted in the mode, and the eccentricity of the wall thickness of a single layer cannot be adjusted, so that the uniformity of the wall thickness of each layer is difficult to ensure, the wall deflection phenomenon is avoided, and the quality of a product cannot be ensured. In view of the above, it is desirable to provide a double-layer co-extrusion die to overcome the above drawbacks.
[ Utility model ] content
The utility model aims at providing a double-deck crowded aircraft nose mould altogether, simple structure can realize the regulation of every layer of wall thickness eccentricity in the double-deck tubular product, guarantees product quality.
In order to achieve the purpose, the utility model provides a double-layer co-extrusion machine head die, which comprises a first die holder, a second die holder, an inner layer shunting body, a mouth die, a core rod, a separator, an outer layer shunting sleeve, a first deviation adjusting piece and a second deviation adjusting piece; a first cavity is formed in the first die holder, a second cavity is formed in the second die holder, the first die holder is connected with the second die holder, and the first cavity is communicated with the second cavity to form an inner cavity; the inner layer splitter is arranged in the inner cavity, the neck mold is limited at one end, far away from the first cavity, of the second cavity, the core rod is arranged at one end, far away from the first cavity, of the inner layer splitter, and an extrusion mold cavity is formed between the core rod and the neck mold; the separator is arranged around the flow distribution body and the core rod, the separator, the inner layer flow distribution body and the core rod are spaced to form an inner layer flow passage, and the inner layer flow distribution body is used for distributing inner layer materials into the inner layer flow passage; the partition, the second die holder and the die are spaced to form an outer layer flow channel, and the outer layer shunting ring is arranged around the partition and used for shunting outer layer materials into the outer layer flow channel; the first deviation adjusting piece is arranged on the first die holder, penetrates through the side wall of the first die holder and abuts against the inner-layer flow distribution body; the second deviation adjusting piece is arranged on the second die holder, penetrates through the side wall of the second die holder and abuts against the mouth die.
In a preferred embodiment, the outer surface of the first die holder is provided with a first heater around, and the outer surface of the second die holder is provided with a second heater around; the separator comprises a heat insulation sleeve, and a gap is reserved between the heat insulation sleeve and the outer layer flow distribution sleeve.
In a preferred embodiment, the separator further comprises a cooling jacket and a separation jacket, the cooling jacket is arranged around the inner layer branch fluid, the heat insulation jacket is connected with the cooling jacket in a sealing manner, and a cooling passage is arranged between the heat insulation jacket and the cooling jacket; the separating sleeve is connected to one end, far away from the first die holder, of the cooling sleeve, and the separating sleeve is arranged around the core rod.
In a preferred embodiment, a spiral cooling groove is formed in the outer surface of the cooling jacket, and the cooling groove is used for flowing a fluid medium to form the cooling passage; the double-layer co-extrusion machine head die further comprises a cooling inlet pipe and a cooling outlet pipe, the cooling inlet pipe and the cooling outlet pipe penetrate through the first heater and the first die holder, and the cooling inlet pipe and the cooling outlet pipe are communicated with the cooling groove.
In a preferred embodiment, the inner-layer shunting body comprises a shunting body, a shunting cone and a shunting bracket, wherein one end of the shunting body is fixedly connected with the mandrel, the shunting cone is connected to one end of the shunting body, which is far away from the mandrel, and the shunting bracket is fixedly connected to the shunting body and is arranged close to the shunting cone; the shunting bracket comprises an adjusting ring and shunting ribs, the adjusting ring surrounds the shunting body and is arranged at intervals with the shunting body, the number of the shunting ribs is at least two, the shunting ribs are uniformly distributed between the shunting body and the adjusting ring by taking the shunting body as an axis, and the adjusting ring is fixedly connected with the shunting body through the shunting ribs; the first biasing member abuts against an outer wall of the adjustment ring.
In a preferred embodiment, a first air passage arranged along the axial direction is formed in the flow dividing body, a second air passage penetrating along the axial direction is formed in the core rod, the first air passage is communicated with the second air passage, and an air passage inlet communicated with the first air passage is formed in at least one flow dividing rib.
In a preferred embodiment, one end of the outer layer flow distribution sleeve, which is far away from the die, is fastened to the second die holder, one end of the outer layer flow distribution sleeve, which is far away from the axial center direction of the outer layer flow distribution sleeve, extends vertically to form a positioning portion, the positioning portion is embedded between the first die holder and the second die holder, and the positioning portion is fixedly connected with the second die holder through a locking screw.
In a preferred embodiment, the die holder further comprises a pressing plate, the pressing plate is fixed to one end, away from the first die holder, of the second die holder, the pressing plate is used for limiting the die in the second cavity, the first heater extends from the first die holder to the direction away from the second die holder and surrounds the pressing plate, and the pressing plate is provided with a limiting hole through which the die penetrates.
In a preferred embodiment, the inner-layer temperature measuring hole is formed in the inner-layer shunt body, and the outer-layer temperature measuring hole is formed in the pressing plate.
In a preferred embodiment, the mandrel is in a truncated cone shape, the first deviation adjusting piece and the second deviation adjusting piece are both deviation adjusting screws, and the diameters of the outer layer flow passage and the inner layer flow passage are gradually reduced from the first cavity to the second cavity.
Compared with the prior art, the beneficial effects of the utility model reside in that: the positions of the inner layer shunt body and the die are respectively adjusted through the first deviation adjusting piece and the second deviation adjusting piece, so that the adjustment of the wall thickness eccentricity of each layer in the double-layer pipe is realized, and the phenomena of eccentricity, uneven wall thickness and the like are avoided, thereby improving the quality of products.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
[ description of the drawings ]
FIG. 1 is a three-dimensional structure diagram of a double-layer co-extrusion die according to a preferred embodiment of the present invention;
FIG. 2 is a front view of the dual layer co-extruder head die shown in FIG. 1;
FIG. 3 is a cross-sectional view taken along A-A as shown in FIG. 2;
fig. 4 is a sectional view taken along the direction B-B shown in fig. 2.
The reference numbers illustrate: the die comprises a first die holder 10, a first cavity 11, an inner-layer flow passage 111, a first connecting part 12, a first connecting cavity 121, a first heater 13, a second die holder 20, a second cavity 21, an outer-layer flow passage 211, a second connecting part 22, a second connecting cavity 221, a second heater 23, a pressure plate 24, a limiting hole 241, an outer-layer temperature measuring hole 242, an inner-layer flow distribution body 30, a flow distribution body 31, a first air passage 311, a flow distribution cone 32, a flow distribution bracket 33, an adjusting ring 331, a flow distribution rib 332, an air passage inlet 3321, an air inlet pipe 3322, an inner-layer temperature measuring hole 34, a die 40, a core rod 50, a second air passage 51, a heat insulation sleeve 61, a cooling sleeve 62, a cooling groove 621, a cooling inlet pipe separator 6211, a cooling outlet pipe 6212, a separator sleeve 63, an outer-layer flow distribution sleeve 70, a positioning part 71, a screw 72, a positioning protrusion 711, a first deviation.
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantageous technical effects of the present invention more clearly understood, the present invention is further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration only and not by way of limitation.
Referring to fig. 1 to 3, an embodiment of the present invention provides a double-layer co-extrusion die for a machine head, including a first die holder 10, a second die holder 20, an inner-layer splitter 30, a die 40, a core rod 50, a spacer 60, an outer-layer splitter sleeve 70, a first deviation adjusting piece 80, and a second deviation adjusting piece 90.
A first cavity 11 is formed in the first die holder 10, a second cavity 21 is formed in the second die holder 20, the first die holder 10 is connected with the second die holder 20, and the first cavity 11 is communicated with the second cavity 21 to form an inner cavity. The inner layer split fluid 30 is arranged in the inner cavity, the neck mold 40 is limited at one end far away from the first cavity 11 in the second cavity 21, the core rod 50 is arranged at one end far away from the first cavity 11 on the inner layer split fluid 30, and an extrusion mold cavity is formed between the core rod 50 and the neck mold 40.
In this embodiment, a first connecting portion 12 is disposed at an end of the first die holder 10 away from the second die holder 20, the first connecting portion 12 has a first connecting cavity 121 communicating with the first cavity 11, the first connecting portion 12 and the first die holder 10 may be an integrated structure, and the first connecting portion 12 is used for connecting an extruder to deliver a molten inner layer material into the first cavity 11. One side of the second die holder 20 is provided with a second connecting portion 22, the second connecting portion 22 is provided with a second connecting cavity 221 communicated with the second cavity 21, and the second connecting portion 22 is used for connecting an extruder to convey the molten outer layer material into the second cavity 21.
Specifically, the partition 60 is disposed around the inner layer flow dividing body 30 and the core rod 50, the partition 60 is spaced from the inner layer flow dividing body 30 and the core rod 50 to form an inner layer flow passage 111, and the inner layer flow dividing body 30 is used for dividing the inner layer material into the inner layer flow passage 111. The divider 60 is spaced from the second die holder 20 and die 40 to form an outer layer flow passage 211, and an outer layer flow sleeve 70 is disposed around the divider 60 and is used to divert outer layer material into the outer layer flow passage 211. Specifically, the cross sections of the inner layer flow channel 111 and the outer layer flow channel 211 are both annular.
The first deviation adjusting member 80 is disposed on the first die holder 10, and the first deviation adjusting member 80 passes through a side wall of the first die holder 10 and abuts against the inner layer shunt 30, so as to adjust the inner layer shunt 30 to ensure the concentricity of the inner layer of the extruded tube. The second deviation adjusting element 90 is disposed on the second die holder 20, and the second deviation adjusting element 90 passes through a side wall of the second die holder 20 and abuts against the mouth mold 40, so as to adjust the mouth mold 40 to ensure the outer layer concentricity of the extruded tube.
Referring to fig. 3 and 4, the first heater 13 is disposed around the outer surface of the first die holder 10, the second heater 23 is disposed around the outer surface of the second die holder 20, and the first heater 13 and the second heater 23 are respectively used for heating the inner layer material and the outer layer material, so that co-extrusion of materials with different melting points can be realized, and thermal decomposition of the low-temperature material can be avoided. Wherein, the separating member 60 comprises a heat insulating sleeve 61, and a gap is left between the heat insulating sleeve 61 and the outer layer flow distributing sleeve 70 to avoid influencing the temperature adjustment between the inner layer flow passage 111 and the outer layer flow passage 211. In this embodiment, the diameters of the outer layer flow passage 211 and the inner layer flow passage 111 are gradually reduced from the first cavity 11 to the second cavity 21, so as to realize high-pressure extrusion molding of the inner and outer layer materials.
Further, the partition 60 further comprises a cooling jacket 62 and a partition jacket 63, the cooling jacket 62 is arranged around the inner-layer flow splitting body 30, the heat insulating jacket 61 is connected with the cooling jacket 62 in a sealing mode, and a cooling passage is arranged between the heat insulating jacket 61 and the cooling jacket 62, so that cooling circulation when the temperature of the head die is too high is achieved. A spacer sleeve 63 is connected to the end of the cooling sleeve 62 remote from the first die holder 10, the spacer sleeve 63 being arranged around the core rod 50.
Specifically, the core rod 50 is in a truncated cone shape, the partition sleeve 63 is matched with the core rod 50 in shape, the first deviation adjusting piece 80 and the second deviation adjusting piece 90 are both deviation adjusting screws, the screwing positions of the deviation adjusting screws can be adjusted according to specific requirements, and the partition piece 60 is used as a reference body, so that the positions of the inner layer shunt body 30 or the mouth mold 40 can be adjusted. The number of the first offset adjusting member 80 and the second offset adjusting member 90 including the offset adjusting screws may be two or more, for example, 2, 3, 4, 6, etc., and is specifically set according to the requirement.
In the present embodiment, a spiral cooling groove 621 is formed in the outer surface of the cooling jacket 62, the cooling groove 621 is used for flowing a fluid medium to form the cooling passage, and the fluid medium may be a cooling liquid or a cooling gas. It can be understood that, in the present embodiment, the dual-layer co-extruder head mold 100 further includes a cooling inlet pipe 6211 and a cooling outlet pipe 6212, the cooling inlet pipe 6211 and the cooling outlet pipe 6212 penetrate through the first heater 13 and the first mold base 10, and both the cooling inlet pipe 6211 and the cooling outlet pipe 6212 are communicated with the cooling groove 621.
Specifically, the inner-layer flow distribution body 30 includes a flow distribution body 31, a flow distribution cone 32 and a flow distribution support 33, one end of the flow distribution body 31 is fixedly connected to the core rod 50, the flow distribution cone 32 is connected to one end of the flow distribution body 31 far away from the core rod 50, and the flow distribution support 33 is fixedly connected to the flow distribution body 31 and is arranged close to the flow distribution cone 32. In this embodiment, reposition of redundant personnel support 33 includes adjustable ring 331 and reposition of redundant personnel muscle 332, adjustable ring 331 encircles reposition of redundant personnel body 31 and sets up with reposition of redundant personnel body 31 interval, the quantity of reposition of redundant personnel muscle 332 is two at least, reposition of redundant personnel muscle 332 uses reposition of redundant personnel body 31 as axle center evenly distributed between reposition of redundant personnel body 31 and adjustable ring 331, through reposition of redundant personnel muscle 332 with adjustable ring 331 and reposition of redundant personnel body 31 fixed connection, in order to support reposition of redundant personnel awl 32, reposition of redundant personnel muscle 332 can get into inlayer runner 111 with the inlayer material reposition of redundant personnel through reposition of redundant personnel awl 32 simultaneously. It will be appreciated that the first biasing member 80 abuts the outer wall of the adjustment ring 331 to effect adjustment of the position of the inner stream 30 by moving the adjustment ring 331.
Furthermore, a first air passage 311 is axially formed in the flow dividing body 31, a second air passage 51 is axially formed in the core rod 50, the first air passage 311 is communicated with the second air passage 51, an air passage inlet 3321 communicated with the first air passage 311 is formed in at least one flow dividing rib 332, and an air inlet pipe 3322 penetrates through the first heater 13, the first die holder 10 and the adjusting ring 331 to be communicated with the air passage inlet 3321, so that an air-filled air flow passage is formed.
In the embodiment of the present invention, the above-mentioned double-layer co-extrusion die head further includes a pressing plate 24, the pressing plate 24 is fixed to the second die holder 20 and is away from the one end of the first die holder 10, the pressing plate 24 is used for limiting the die 40 in the second cavity 21, the first heater 13 is extended from the first die holder 10 to the direction away from the second die holder 20 and surrounds the pressing plate 24, and the pressing plate 24 is provided with a limiting hole 241 for the die 40 to wear out.
As shown in fig. 3, the inner temperature measuring hole 34 is formed in the inner layer shunting body 30, the outer temperature measuring hole 242 is formed in the pressing plate 24, and the extrusion temperatures of the inner layer material and the outer layer material are respectively detected through the inner temperature measuring hole 34 and the outer temperature measuring hole 242, so as to realize the automatic temperature control function of the first heater 13 and the second heater 23. In this embodiment, the inner temperature measuring hole 34 may be specifically formed on the inner wall of the shunt body 31 and communicated with one of the shunt ribs 332, so as to facilitate installation of a temperature sensor for detection.
Further, the end of the outer layer sleeve 70 remote from the die 40 is fixedly connected to the second die holder 20. In this embodiment, one end of the outer layer shunt sleeve 70 extends perpendicularly away from the axial center direction of the outer layer shunt sleeve 70 to form a positioning portion 71, wherein the positioning portion 71 is embedded between the first die holder 10 and the second die holder 20, and the positioning portion 71 is fixedly connected with the second die holder 20 through a locking screw 72. Preferably, one side of the positioning portion 71 extends toward the first die holder 10 to form a positioning protrusion 711, so as to further ensure the stability and firmness of the fixing of the outer layer flow sleeve 70.
The embodiment of the utility model provides a double-deck crowded aircraft nose mould altogether adjusts the position of inlayer reposition of redundant personnel 30 and bush 40 respectively through first tuningout 80 and second tuningout 90, realizes the regulation of every layer of wall thickness eccentricity in the double-deck tubular product, avoids appearing phenomenon such as eccentric, wall thickness inequality to improve the quality of product.
It should be noted that the embodiment of the utility model provides a double-deck crowded aircraft nose mould structure altogether also is applicable to the multilayer and crowded aircraft nose altogether for produce three-layer or the compound tubular product more than the three-layer. In one embodiment, a die interface spaced from the second connecting portion 22 is provided on one side of the second die holder 20 and communicates with the cavity, for example, the die interface can be provided opposite the second connecting portion 22 and deliver the melt from the extruder into the cavity and join the inner and outer layers to produce a three-layer composite tube.
The invention is not limited solely to that described in the specification and the embodiments, and additional advantages and modifications will readily occur to those skilled in the art, and it is not intended to be limited to the specific details, representative apparatus, and illustrative examples shown and described herein, without departing from the spirit and scope of the general concept as defined by the appended claims and their equivalents.
Claims (10)
1. A double-layer co-extrusion machine head die is characterized by comprising a first die holder, a second die holder, an inner layer shunting body, a mouth die, a core rod, a separator, an outer layer shunting sleeve, a first deviation adjusting piece and a second deviation adjusting piece; a first cavity is formed in the first die holder, a second cavity is formed in the second die holder, the first die holder is connected with the second die holder, and the first cavity is communicated with the second cavity to form an inner cavity; the inner layer splitter is arranged in the inner cavity, the neck mold is limited at one end, far away from the first cavity, of the second cavity, the core rod is arranged at one end, far away from the first cavity, of the inner layer splitter, and an extrusion mold cavity is formed between the core rod and the neck mold; the separator is arranged around the flow distribution body and the core rod, the separator, the inner layer flow distribution body and the core rod are spaced to form an inner layer flow passage, and the inner layer flow distribution body is used for distributing inner layer materials into the inner layer flow passage; the partition, the second die holder and the die are spaced to form an outer layer flow channel, and the outer layer shunting ring is arranged around the partition and used for shunting outer layer materials into the outer layer flow channel; the first deviation adjusting piece is arranged on the first die holder, penetrates through the side wall of the first die holder and abuts against the inner-layer flow distribution body; the second deviation adjusting piece is arranged on the second die holder, penetrates through the side wall of the second die holder and abuts against the mouth die.
2. The double-layer co-extrusion machine head die as claimed in claim 1, wherein a first heater is arranged around the outer surface of the first die holder, and a second heater is arranged around the outer surface of the second die holder; the separator comprises a heat insulation sleeve, and a gap is reserved between the heat insulation sleeve and the outer layer flow distribution sleeve.
3. The double-layer co-extrusion machine head die as claimed in claim 2, wherein the partition further comprises a cooling jacket and a partition jacket, the cooling jacket is arranged around the inner layer branch fluid, the heat insulation jacket is connected with the cooling jacket in a sealing manner, and a cooling passage is arranged between the heat insulation jacket and the cooling jacket; the separating sleeve is connected to one end, far away from the first die holder, of the cooling sleeve, and the separating sleeve is arranged around the core rod.
4. The double-layer co-extrusion machine head die as claimed in claim 3, wherein the outer surface of the cooling jacket is provided with a spiral cooling groove, and the cooling groove is used for circulating fluid medium to form the cooling passage; the double-layer co-extrusion machine head die further comprises a cooling inlet pipe and a cooling outlet pipe, the cooling inlet pipe and the cooling outlet pipe penetrate through the first heater and the first die holder, and the cooling inlet pipe and the cooling outlet pipe are communicated with the cooling groove.
5. The double-layer co-extrusion machine head die as claimed in claim 1, wherein the inner-layer shunting body comprises a shunting body, a shunting cone and a shunting bracket, one end of the shunting body is fixedly connected with the mandrel, the shunting cone is connected to one end of the shunting body far away from the mandrel, and the shunting bracket is fixedly connected to the shunting body and arranged close to the shunting cone; the shunting bracket comprises an adjusting ring and shunting ribs, the adjusting ring surrounds the shunting body and is arranged at intervals with the shunting body, the number of the shunting ribs is at least two, the shunting ribs are uniformly distributed between the shunting body and the adjusting ring by taking the shunting body as an axis, and the adjusting ring is fixedly connected with the shunting body through the shunting ribs; the first biasing member abuts against an outer wall of the adjustment ring.
6. The double-layer co-extrusion die head as claimed in claim 5, wherein a first air passage is axially formed in the flow dividing body, a second air passage is axially formed in the core rod, the first air passage is communicated with the second air passage, and an air passage inlet communicated with the first air passage is formed in at least one flow dividing rib.
7. The double-layer co-extrusion machine head die as claimed in claim 1, wherein one end of the outer layer flow distribution sleeve, which is far away from the die, is fastened to the second die holder, one end of the outer layer flow distribution sleeve extends perpendicularly away from the axial direction of the outer layer flow distribution sleeve to form a positioning portion, the positioning portion is embedded between the first die holder and the second die holder, and the positioning portion is fixedly connected to the second die holder through a locking screw.
8. The double-layer co-extrusion die head as claimed in claim 2, further comprising a pressing plate, wherein the pressing plate is fixed to one end of the second die holder far away from the first die holder, the pressing plate is used for limiting the die in the second cavity, the first heater extends from the first die holder to the direction far away from the second die holder and surrounds the pressing plate, and the pressing plate is provided with a limiting hole for the die to penetrate out.
9. The double-layer co-extrusion machine head die as claimed in claim 8, wherein the inner-layer temperature measuring hole is formed in the inner-layer shunting body, and the outer-layer temperature measuring hole is formed in the pressing plate.
10. The double-layer co-extrusion machine head die as claimed in claim 1, wherein the mandrel is in a truncated cone shape, the first deviation adjusting part and the second deviation adjusting part are both deviation adjusting screws, and the diameters of the outer layer flow channel and the inner layer flow channel are gradually reduced from the first cavity to the second cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920937945.4U CN210415460U (en) | 2019-06-21 | 2019-06-21 | Double-layer co-extrusion machine head die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920937945.4U CN210415460U (en) | 2019-06-21 | 2019-06-21 | Double-layer co-extrusion machine head die |
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| CN210415460U true CN210415460U (en) | 2020-04-28 |
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|---|---|---|---|
| CN201920937945.4U Withdrawn - After Issue CN210415460U (en) | 2019-06-21 | 2019-06-21 | Double-layer co-extrusion machine head die |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110328824A (en) * | 2019-06-21 | 2019-10-15 | 深圳市沃尔核材股份有限公司 | Co-extruder head mold |
| WO2022016640A1 (en) * | 2020-07-21 | 2022-01-27 | 临海伟星新型建材有限公司 | Double-layer hollow pipe mold |
-
2019
- 2019-06-21 CN CN201920937945.4U patent/CN210415460U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110328824A (en) * | 2019-06-21 | 2019-10-15 | 深圳市沃尔核材股份有限公司 | Co-extruder head mold |
| CN110328824B (en) * | 2019-06-21 | 2024-09-06 | 深圳市沃尔核材股份有限公司 | Double-layer co-extrusion die head mold |
| WO2022016640A1 (en) * | 2020-07-21 | 2022-01-27 | 临海伟星新型建材有限公司 | Double-layer hollow pipe mold |
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