CN112123733A - Double-layer hollow tube mold - Google Patents
Double-layer hollow tube mold Download PDFInfo
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- CN112123733A CN112123733A CN202010704496.6A CN202010704496A CN112123733A CN 112123733 A CN112123733 A CN 112123733A CN 202010704496 A CN202010704496 A CN 202010704496A CN 112123733 A CN112123733 A CN 112123733A
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- mold
- die
- shunting
- core
- hole
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a double-layer hollow pipe mold, which comprises an entrance mold, wherein one end of the entrance mold is fixedly connected with a flow dividing device, one surface of the flow dividing device, which is far away from the entrance mold, is provided with a first core mold, the first core mold is sleeved with a first middle mold, the first middle mold is sleeved with a first outer mold for pressing and holding the first middle mold, one end of the first core mold, which is far away from the flow dividing device, is provided with a second core mold, the second core mold is sleeved with a second middle mold matched with the first middle mold, the second middle mold is sleeved with a second outer mold for pressing and holding the second middle mold, and compared with the prior art, the double-layer hollow pipe mold has the following beneficial effects: the double-layer hollow pipe made of double materials can be conveniently processed.
Description
Technical Field
The invention relates to a double-layer hollow pipe die, belonging to the technical field of high polymer material extrusion.
Background
At present, some high polymer material pipelines such as plastic pipes are widely applied due to the advantages of sanitation, light weight, small resistance, reliable connection and the like, and the double-layer hollow pipeline consists of an inner pipe, an outer pipe and support ribs for connecting the inner pipe and the outer pipe. The double-layer hollow pipelines with different inner and outer layer materials can be respectively optimized according to the use conditions inside and outside the hollow pipe, and for example, the inner layer has the characteristics of heat resistance, sanitation, ultraviolet resistance, external corrosion resistance, aging resistance and the like.
Disclosure of Invention
In view of the blank existing in the prior art, the present invention aims to provide a double-layer hollow pipe mold to solve the problems proposed in the background art.
In order to achieve the purpose, the invention is realized by the following technical scheme: a double-layer hollow tube die comprises an inlet die, one end of the inlet die is fixedly connected with a flow dividing device, one side of the flow dividing device, which is far away from the inlet die, is provided with a first core die, the first core die is sleeved with a first middle die, the first middle die is sleeved with a first outer die for pressing and holding the first middle die, the first outer die is arranged in the flow dividing device, the first outer die is sleeved with a first pressing plate for pressing and holding the first outer die, the first pressing plate is fixedly connected with a flow dividing outer die of the flow dividing device through a connecting screw, the outer surface of one end, far away from the inlet die, of the flow dividing device is provided with a plurality of first threaded holes in an annular equidistance manner, a plurality of first threaded holes are respectively engaged with a first adjusting bolt, one end, far away from the flow dividing device, of the first core die is provided with a second core die, the second core die is, the cover is equipped with the second external mold that is used for pressing and holds the well in the second, the second external mold sets up in first pressure strip, the cover is equipped with the second pressure strip that is used for pressing and holds the second external mold position on the second external mold, the second pressure strip passes through connecting screw and first pressure strip fixed connection, a plurality of second screw hole, a plurality of are seted up to the one end outward appearance that diverging device was kept away from to first pressure strip and annular equidistance the second threaded hole all meshes has second adjusting bolt.
Further, diverging device is including the reposition of redundant personnel mould, the reposition of redundant personnel mould passes through screw and entry mould fixed connection, the reposition of redundant personnel mould deviates from one side fixed connection reposition of redundant personnel external mold of entering the bush, be equipped with the reposition of redundant personnel well mould in the reposition of redundant personnel external mold, be equipped with the reposition of redundant personnel mandrel in the reposition of redundant personnel well mould.
Further, a third threaded hole is processed on one surface, facing the first core mold, of the flow distribution core mold, a threaded column matched with the third threaded hole is fixed on one surface, facing the flow distribution core mold, of the first core mold, and the threaded column is meshed with the third threaded hole.
Furthermore, a third threaded hole is processed in one surface, facing the first core mold, of the shunting core mold, a first through hole matched with the third threaded hole is formed in one surface, facing the shunting core mold, of the first core mold, a second through hole matched with the first through hole is formed in one surface, facing the first core mold, of the second core mold, a connecting screw is arranged in the second through hole, and the connecting screw penetrates through the first through hole and is meshed in the third threaded hole.
The invention has the beneficial effects that: 1. the continuous production of hollow pipes with different specifications and different materials of the inner layer and the outer layer can be realized; the uniformity of the wall thickness of the inner layer and the outer layer can be adjusted during online production; the material of the support rib can be consistent with that of the inner layer or the outer layer; the number of the supporting ribs can be selected according to the requirement; can meet different pipe section shapes.
2. The cavity filling of the supporting ribs is completed simultaneously when the specification is adjusted, so that the compactness of the product is ensured, and bubbles are prevented from being generated.
3. Under the same cross-sectional shape, change the pipe specification and only need to change second well mould, second mandrel, the second outer mould at terminal, all the other remains unchanged, convenient and fast.
4. The flow channel is smooth and easy, and the extrusion die can adapt to the extrusion of various high polymer materials by combining a proper inlet die and a proper flow dividing device.
5. The support rib penetrates through the wall thickness of the whole pipe, so that functions such as punching on the rib, internal and external conduction, position identification of the support rib during pipe butt joint and the like are provided.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic structural view of embodiment 1 of the present invention;
FIG. 2 is a perspective view of a second middle mold in a double-layered hollow tube mold according to the present invention;
FIG. 3 is a cross-sectional view of a double-layered hollow tube formed by the second mold in FIG. 2;
FIG. 4 is a schematic structural diagram of embodiment 3 of the present invention;
FIG. 5 is a perspective view of the second intermediate mold of FIG. 4;
FIG. 6 is a cross-sectional view of a double-layered hollow tube formed by the second die of FIG. 5;
FIG. 7 is a schematic structural view of embodiment 4 of the present invention;
FIG. 8 is a perspective view of the second intermediate mold of FIG. 7;
FIG. 9 is a cross-sectional view of a double-layered hollow tube formed by the second die of FIG. 8;
FIG. 10 is a schematic structural view of example 5 of the present invention;
fig. 11 is a perspective view of the second intermediate mold of fig. 10;
FIG. 12 is a cross-sectional view of a double-layered hollow tube formed by the second die of FIG. 11;
in the figure: 1-inlet die, 2-shunt device, 3-first core die, 4-first middle die, 5-first outer die, 6-first pressing plate, 7-second core die, 8-second pressing plate, 9-second middle die, 10-second outer die, 11-first adjusting bolt and 12-second adjusting bolt.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1: referring to fig. 1 to 3, the present invention provides a technical solution: the utility model provides a double-deck hollow tube mould, includes inlet die 1, inlet die 1 one end fixed connection diverging device 2, gets into two strands of fuse-elements back from inlet die 1 entry, forms two ring shape material flows that the inlayer is even flowed through diverging device 2's passageway respectively, and diverging device 2 runner structure can be posture, basket formula, spiral or its cross combination, therefore inlet die 1 and diverging device 2 can be same die body, also can be respectively single, a plurality of die body is constituteed.
The side, deviating from the entrance die 1, of the flow dividing device 2 is provided with a first core die 3, the first core die 3 is sleeved with a first middle die 4, the first middle die 4 is sleeved with a first outer die 5 used for pressing and holding the first middle die 4, the first outer die 5 is arranged in the flow dividing device 2, two inner and outer layers of uniformly flowing annular material flows are formed through a channel of the flow dividing device 2, the outer layer of melt bypasses the first middle die 4 to flow through a flow channel between the first middle die 4 and the first outer die 5 and adjust the size specification, the inner layer of melt flows through the flow channel between the first middle die 4 and the first core die 3 and adjusts the size specification, and then the inner layer and the outer layer of melt are extruded into a structure consisting of a second outer die 10, a second middle die 9 and a second.
The first outer die 5 is sleeved with a first pressing plate 6 used for pressing and holding the first outer die 5, the first pressing plate 6 is fixedly connected with the shunting outer die of the shunting device 2 through a connecting screw, and the first pressing plate 6 plays a role in pressing the first outer die 5.
The outer surface of one end of the flow dividing device 2 far away from the inlet die is in an annular equidistant shape and is provided with a plurality of first threaded holes, the first threaded holes are all meshed with first adjusting bolts 11, and when the outer pipe wall thickness of the extruded double-layer hollow pipe has the condition of different thicknesses, the positions of the first outer dies 5 are adjusted by the first adjusting bolts 11 in the first threaded holes, so that the outer pipe wall thickness of the double-layer hollow pipe is uniform.
A second core mould 7 is arranged at one end of the first core mould 3 far away from the shunt device 2, a second middle mould 9 matched with the first middle mould 4 is sleeved on the second core mould 7, a second outer mould 10 used for pressing and holding the second middle mould 9 is sleeved on the second middle mould 9, the second outer mould 10 is arranged in the first compression plate 6, outer layer melt flowing into the structure formed by the second outer mould 10, the second middle mould 9 and the second core mould 7 flows through a flow channel between the second middle mould 9 and the second outer mould 10 and is adjusted in size specification, inner layer melt flows through the flow channel between the second middle mould 9 and the second core mould 7 and is adjusted in size specification, the shape of the supporting rib comprises an interface formed by forced distribution with an inner layer or an outer layer, the inner layer or the outer layer melt fills a reserved cavity of the second middle mould 9 and is compounded and formed with the outer layer or the inner layer melt when flowing through the second middle mould 9, and is, the outer layer and the support ribs are extruded out of the die together.
The second outer die 10 is sleeved with a second pressing plate 8 used for pressing and holding the position of the second outer die 10, the second pressing plate 8 is fixedly connected with the first pressing plate 6 through a connecting screw, and the second pressing plate 8 plays a role in pressing the second outer die 10.
The outer surface of one end of the first pressing plate 6, which is far away from the shunting device 2, is annularly and equidistantly provided with a plurality of second threaded holes, and second adjusting bolts 12 are meshed in the second threaded holes, when the thickness of the inner pipe wall of the extruded double-layer hollow pipe is different, the positions of the second outer dies 10 are adjusted by using the second adjusting bolts 12 in the second threaded holes, so that the thickness of the outer pipe wall of the double-layer hollow pipe is uniform, the section shape of the pipe can be adjusted by changing the flow channel shapes of the second core die 7, the second middle die 9 and the second outer die 10, the second middle die 9 serves as a forming core part, the cavity of the second middle die can determine the number, the material and the shape of the supporting ribs, and when the material of the supporting ribs is consistent with that of the inner pipe, the first middle die 4 is not fixed, the first outer die 5; the second middle die 9 and the second outer die 10 are relatively fixed and adjustable together and correspond to the wall thickness of the inner pipe; when the material of the supporting rib is consistent with that of the outer pipe, the first outer die 5 is preferably fixed without adjustment, and the first middle die 4 is adjustable and corresponds to the wall thickness of the inner pipe; the second middle die 9 and the second core die 7 are not fixed, the second outer die 10 is adjustable, the wall thickness of the outer tube is correspondingly adjusted, and in order to achieve relatively independent adjustment of the wall thickness of the two layers of tubes, the first pressing plate 6 is fastened on the outer die body at the tail end of the shunting device 2 and is not affected by adjustment of the first outer die 5.
The shunting device 2 comprises a shunting die, the shunting die is fixedly connected with the inlet die 1 through a screw, one surface of the shunting die, which deviates from the inlet die 1, is fixedly connected with a shunting outer die, a shunting middle die is arranged in the shunting outer die, a shunting core die is arranged in the shunting middle die, one part of the melt entering the shunting die from the inlet die 1 flows into a flow channel between the shunting outer die and the shunting middle die, and the other part of the melt flows into a flow channel between the shunting middle die and the shunting core die, so that two uniformly flowing annular material flows of the inner layer and the outer.
A third threaded hole is processed on one surface of the shunting core mold facing the first core mold 3, a threaded column matched with the third threaded hole is fixed on one surface of the first core mold 3 facing the shunting core mold, the threaded column is meshed in the third threaded hole, and the threaded column on the first core mold 3 is screwed into the third threaded hole on the shunting core mold, so that the first core mold 3 is fixedly connected with the shunting core mold.
Example 2: a third threaded hole is processed on one surface of the shunting core mold facing the first core mold 3, a first through hole matched with the third threaded hole is formed on one surface of the first core mold 3 facing the shunting core mold, a second through hole matched with the first through hole is formed on one surface of the second core mold 7 facing the first core mold 3, a connecting screw is arranged in the second through hole, the connecting screw penetrates through the first through hole and is meshed in the third threaded hole, the connecting screw penetrates through the second through hole and is screwed into the third threaded hole in the shunting core mold, and the second core mold 7, the first core mold 3 and the shunting core mold are fixedly connected.
Example 3: referring to fig. 4 to 6, the second core mold 7 shown in fig. 5 is used to process a double-layered hollow tube having the same material as the inner tube and the support rib penetrating the outer tube.
Example 4: referring to fig. 7 to 9, the second core mold 7 shown in fig. 8 is used to process a double-layered hollow tube having the same material as the outer tube and the support rib penetrating the inner tube.
Example 5: referring to fig. 10 to 12, the second core mold 7 shown in fig. 11 is used to process a double-layered hollow tube having the same material as the outer tube and the support rib attached to the surface of the inner tube.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. A double-layer hollow tube mold comprises an inlet mold (1) and is characterized in that: the mold is characterized in that one end of the entrance mold (1) is fixedly connected with a shunting device (2), one surface of the shunting device (2) deviating from the entrance mold (1) is provided with a first core mold (3), the first core mold (3) is sleeved with a first middle mold (4), the first middle mold (4) is sleeved with a first outer mold (5) used for pressing the first middle mold (4), the first outer mold (5) is arranged in the shunting device (2), the first outer mold (5) is sleeved with a first pressure strip (6) used for pressing the first outer mold (5), the first pressure strip (6) is fixedly connected with the shunting outer mold of the shunting device (2) through connecting screws, the outer surface of one end of the shunting device (2) far away from the entrance mold is annular, a plurality of first threaded holes with equal intervals are formed in an equal distance, and a plurality of first adjusting bolts (11) are meshed in the first threaded holes, the one end that diverging device (2) was kept away from in first mandrel (3) is installed second mandrel (7), the cover is equipped with in the second with first well mould (4) matched with second (9) on second mandrel (7), the cover is equipped with second external mold (10) that are used for pressing and hold in second well mould (9) in second, second external mold (10) set up in first pressure strip (6), the cover is equipped with second pressure strip (8) that are used for pressing and hold second external mold (10) position on second external mold (10), second pressure strip (8) are through connecting screw and first pressure strip (6) fixed connection, the one end outward appearance that diverging device (2) were kept away from in first pressure strip (6) is personally submitted annular equidistance and has seted up a plurality of second screw hole, a plurality of second adjusting bolt (12) have all meshed in the second screw hole.
2. The double-layered hollow tube mold according to claim 1, wherein: the shunting device (2) comprises a shunting die, the shunting die is fixedly connected with the entrance die (1) through a screw, one side of the shunting die, which deviates from the entrance die (1), is fixedly connected with a shunting outer die, a shunting middle die is arranged in the shunting outer die, and a shunting core die is arranged in the shunting middle die.
3. The double-layered hollow pipe mold according to claim 2, wherein: and a third threaded hole is processed in one surface of the shunting core mold facing the first core mold (3), a threaded column matched with the third threaded hole is fixed in one surface of the first core mold (3) facing the shunting core mold, and the threaded column is meshed in the third threaded hole.
4. The double-layered hollow pipe mold according to claim 2, wherein: the reposition of redundant personnel mandrel has the third screw hole towards the one side processing of first mandrel (3), first mandrel (3) are seted up towards the one side of reposition of redundant personnel mandrel with third screw hole matched with first through-hole, second mandrel (7) are seted up towards the one side of first mandrel (3) with first through-hole matched with second through-hole, be equipped with the connecting screw in the second through-hole, the connecting screw passes first through-hole meshing and is in the third threaded hole.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010704496.6A CN112123733A (en) | 2020-07-21 | 2020-07-21 | Double-layer hollow tube mold |
| PCT/CN2020/109462 WO2022016640A1 (en) | 2020-07-21 | 2020-08-17 | Double-layer hollow pipe mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010704496.6A CN112123733A (en) | 2020-07-21 | 2020-07-21 | Double-layer hollow tube mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112123733A true CN112123733A (en) | 2020-12-25 |
Family
ID=73850625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010704496.6A Pending CN112123733A (en) | 2020-07-21 | 2020-07-21 | Double-layer hollow tube mold |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112123733A (en) |
| WO (1) | WO2022016640A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113043571A (en) * | 2021-04-12 | 2021-06-29 | 临海伟星新型建材有限公司 | Ultra-high molecular weight polyethylene pipe co-extrusion die and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2242780Y (en) * | 1995-06-01 | 1996-12-18 | 山东省莱州市精工塑料厂 | Die special for processing Double-wall pipeline |
| CN201530115U (en) * | 2009-09-24 | 2010-07-21 | 苏州金纬机械制造有限公司 | Double-layer composite die of pipe production line |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61127310A (en) * | 1984-11-26 | 1986-06-14 | Toppan Printing Co Ltd | Molding equipment of blow molding multilayer parison |
| CN201638613U (en) * | 2009-09-28 | 2010-11-17 | 青岛汉缆股份有限公司 | Cable insulating extruder head |
| CN209350847U (en) * | 2018-12-29 | 2019-09-06 | 潍坊中云科研有限公司 | Small-bore double-wall corrugated pipe squeezes out head |
| CN210415460U (en) * | 2019-06-21 | 2020-04-28 | 深圳市沃尔核材股份有限公司 | Double-layer co-extrusion machine head die |
-
2020
- 2020-07-21 CN CN202010704496.6A patent/CN112123733A/en active Pending
- 2020-08-17 WO PCT/CN2020/109462 patent/WO2022016640A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2242780Y (en) * | 1995-06-01 | 1996-12-18 | 山东省莱州市精工塑料厂 | Die special for processing Double-wall pipeline |
| CN201530115U (en) * | 2009-09-24 | 2010-07-21 | 苏州金纬机械制造有限公司 | Double-layer composite die of pipe production line |
Non-Patent Citations (1)
| Title |
|---|
| 夏开邦: "《塑料与农业节水》", 30 April 2002, 中国石化出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113043571A (en) * | 2021-04-12 | 2021-06-29 | 临海伟星新型建材有限公司 | Ultra-high molecular weight polyethylene pipe co-extrusion die and method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022016640A1 (en) | 2022-01-27 |
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Application publication date: 20201225 |
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