CN218535558U - Extruded pipe type round cable mould for PVC sheath - Google Patents
Extruded pipe type round cable mould for PVC sheath Download PDFInfo
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- CN218535558U CN218535558U CN202222927616.6U CN202222927616U CN218535558U CN 218535558 U CN218535558 U CN 218535558U CN 202222927616 U CN202222927616 U CN 202222927616U CN 218535558 U CN218535558 U CN 218535558U
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Abstract
The utility model discloses a crowded tubular rounding cable mould of PVC sheath, including die sleeve (1) and mold core (2), be provided with die sleeve through-hole (11) on die sleeve (1), die sleeve through-hole (11) are formed by die sleeve bell mouth (111) and die sleeve round hole (112) combination with the axle center, the side of die sleeve bell mouth (111) is 10-22.5 with the contained angle of axis, in die core (2) are arranged in through-hole (11) of die sleeve (1), including annular portion (21), toper portion (22) and fixed part (23) that connect gradually, annular portion (21) and toper portion (22) are with the axle center, and annular portion (21) axle center position has mold core round hole (211), has mold core bell mouth (221) in toper portion (22) axle center position, toper portion (22) side is 5-15 with the contained angle of axis. The utility model discloses a crowded tub formula rounding cable mould of PVC sheath has that the cable outward appearance is round, not loose the cover, and production efficiency is high, a great deal of advantage such as materials are saved.
Description
Technical Field
The utility model relates to an inorganic mineral insulation fireproof cable of chain armor belongs to wire and cable technical field.
Background
The existing extruded tube type cable generally has the problem of non-round appearance.
In addition, the cable produced by the existing cable mould has good appearance roundness, the cable core is loose, the cable core is tight, the appearance roundness is not good, and the effect that the cable appearance is round and the tightness of the cable core is appropriate is difficult to achieve.
In addition, the appearance shape of the existing extruded tube type sheath cable is changed according to the shape change of the front semi-finished product of the sheath, the shape of the front semi-finished product of the sheath is not round, the extruded tube sheath is also not round, the shape of the front semi-finished product of the sheath is round, the extruded tube sheath is round, the requirement on the semi-finished product is high, and the round cable cannot be extruded from the non-round front semi-finished product of the sheath.
Therefore, there is a need for an improved extrusion cable die to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problems, the inventor of the invention carries out intensive research and designs a PVC sheath extruded pipe type round cable mould, which comprises a mould sleeve 1 and a mould core 2,
the die sleeve 1 is provided with a die sleeve through hole 11, the die sleeve through hole 11 is formed by combining a die sleeve conical hole 111 and a die sleeve round hole 112 which are coaxial, the included angle between the side surface of the die sleeve conical hole 111 and the axis is 10-22.5 degrees,
the mold core 2 is arranged in the through hole 11 of the mold sleeve 1 and comprises an annular part 21, a conical part 22 and a fixing part 23 which are sequentially connected, the annular part 21 and the conical part 22 are coaxial, the axis position of the annular part 21 is provided with a mold core round hole 211, the axis position of the conical part 22 is provided with a mold core conical hole 221, the surface of the fixing part 23 is provided with a bulge or a groove, so that the fixing part can be clamped with extrusion molding equipment,
the included angle between the side surface of the conical part 22 and the axis is 5-15 degrees.
In a preferred embodiment, the cable mold has a modulus K of 1 to 1.1, said modulus K being:
K＝(D big (a) /d Big (a) )/(D Small /d Small )
Wherein D is Big (a) Indicates the inner diameter, d, of the die case circular hole 112 Big (a) Represents the cable jacket outer diameter;
D small Indicates the inner diameter, d, of the core circular hole 211 Small The cable core inner diameter is indicated.
In a preferred embodiment, the ratio of the length of the die sleeve circular orifice 112 to the diameter of the die sleeve circular orifice 112 is 0.2 to 0.4.
In a preferred embodiment, the ratio of the length of the annular portion 21 to the diameter of the core bore 211 is 0.8 to 1.2.
In a preferred embodiment, the die sleeve bore 112 has a length less than the length of the annular portion 21.
In a preferred embodiment, the die case 1 has a step 12 on its surface, so that the die case 1 can be snapped into the extrusion device.
In a preferred embodiment, the die further comprises a water bath provided on the extension of the through hole 11 for cooling the jacket formed by the extruded tube.
In a preferred embodiment, the water tank is arranged at the tangential point of a sheath drawing arc and the radial direction of the cable, wherein the sheath drawing arc refers to an arc formed by the sheath material at the die opening after the tube is extruded.
According to the utility model provides a crowded tubular round cable mould of PVC sheath has following advantage:
(1) The cable has round appearance and is not loose;
(2) The appearance of the cable has no lines;
(3) The cable sheath material consumption is saved, the production efficiency is high, compared with the traditional pipe extruding die, the consumption can be saved by 10-20%, and the production efficiency can be improved by 20-30%.
Drawings
Fig. 1 is a schematic cross-sectional view of a PVC jacket extruded round cable mold according to a preferred embodiment of the present invention;
fig. 2 is a schematic view showing a cross-sectional structure of a mold core of a PVC jacket extruded pipe type round cable mold according to a preferred embodiment of the present invention;
fig. 3 shows a schematic view of the overall cross-sectional structure of a PVC sheath extruded round cable mold according to a preferred embodiment of the present invention.
The reference numbers illustrate:
1-a die sleeve;
2-mould core;
11-a through hole;
12-step;
21-an annular portion;
22-a conical portion;
23-a fixed part;
111-die case taper hole;
112-die sleeve round hole;
211-core round holes;
221-tapered hole of mold core.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. The features and advantages of the present invention will become more apparent from the following description.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The utility model provides a PVC sheath extrusion pipe type round cable mould, which comprises a mould sleeve 1 and a mould core 2,
the die sleeve 1 is provided with a die sleeve through hole 11, the die sleeve through hole 11 is formed by combining a die sleeve conical hole 111 and a die sleeve circular hole 112 which are coaxial,
the mold core 2 is arranged in the through hole 11 of the mold sleeve 1 and comprises an annular part 21, a conical part 22 and a fixing part 23 which are sequentially connected, the annular part 21 and the conical part 22 are coaxial, the axis position of the annular part 21 is provided with a mold core round hole 211, the axis position of the conical part 22 is provided with a mold core conical hole 221, the surface of the fixing part 23 is provided with a bulge or a groove, so that the fixing part can be clamped with extrusion molding equipment,
according to the utility model, the mould is arranged on the extrusion molding equipment, the cable core is arranged in the mould core taper hole 221 and moves at a uniform speed towards the mould core round hole 211;
the sheath material flows in the gap between the die sleeve through hole 11 and the die core 2, flows at a constant speed from the die sleeve taper hole 111 to the die sleeve round hole 112, and forms a columnar semifluid at the port of the die through extrusion of the die, and the columnar semifluid is attached to the cable core, so that the cable outer sheath is realized.
The inventors have found that the angle of the side of the die sleeve bore 111 to the axis, and the angle of the side of the tapered portion 22 to the axis, directly affect the rounding of the cable after extrusion.
The utility model discloses in, the contained angle of the side of die sleeve bell mouth 111 and axis is 10-22.5, compares in traditional crowded pipe mould, has greatly reduced the contained angle of the side of die sleeve bell mouth 111 and axis like this, is favorable to crowded going of managing, and even some pine of sheath that forms can reach fine rounding degree, furtherly the contained angle of 22 sides of toper portion and axis is 5-15 simultaneously.
Through a large amount of experiments, under the above-mentioned parameter, the resistance that the cable sheath material flowed forward is less, is favorable to the flow of sheath material and the shaping of sheath, can greatly improve the rounding degree of cable outward appearance to can also improve production efficiency.
Further, through research, the inventor also finds that the mold matching coefficient of the cable mold also greatly influences the finished product property of the cable sheath, preferably, the mold matching coefficient K of the cable mold is 1-1.1, when the mold matching coefficient is smaller than 1, the sheath can generate a loose package phenomenon, the wire core is easy to pull out, the mold matching coefficient is larger than 1.1, the sheath can be wrapped too tightly, and the appearance has grains and is not round.
Further, the modulus matching coefficient K is:
K＝(D big (a) /d Big (a) )/(D Small /d Small )
Wherein D is Big (a) Indicates the inner diameter, d, of the die sleeve circular hole 112 Big (a) Denotes the outer diameter of the cable sheath, D Small Indicates the inner diameter, d, of the circular hole 211 of the mold core Small The cable core inner diameter is indicated.
Furthermore, the appearance of the cable is greatly limited by the stretching ratio of the cable material, when the stretching ratio of the material is too large or too small, the appearance of the cable is not round, and in order to control the stretching ratio, the inventor determines the empirical proportion among the die sleeve, the die core and the cable through a large number of experiments.
Preferably, the ratio of the length of the die sleeve round hole 112 to the aperture of the die sleeve round hole 112 is 0.2-0.4;
preferably, the ratio of the length of the annular portion 21 to the bore diameter of the core circular bore 211 is 0.8-1.2.
Further, according to the present invention, the length of the die case circular hole 112 is smaller than the length of the annular portion 21.
According to the utility model discloses, under the above-mentioned parameter, can be so that the crowded pipe sheath of producing not loose not tightly, just paste on the cable core.
According to the utility model discloses, still have step 12 on 1 surface of die sleeve for die sleeve 1 can with extrusion molding equipment joint.
In a preferred embodiment, the die further comprises a water tank disposed on an extension of the through hole 11 for cooling the jacket formed by the extruded tube to accelerate the setting of the jacket.
In a preferred embodiment, the water groove is arranged at the tangential point of a sheath drawing arc and the radial direction of the cable, and the sheath drawing arc refers to an arc formed by the sheath material at the die opening after the tube is extruded.
The inventor discovers that the refrigerated starting point has great influence on the finished product of the cable, the refrigerated starting point can not be cooled in advance and cannot be cooled in the back, the sheath material can be cooled completely without being stretched in advance, the sheath material can be broken easily, the appearance of the cable is in a bamboo joint shape, the stretching arc can be completely wrapped on the core of the cable core and cooled after lines are formed in the back, and the appearance of the cable is not round and complete and the lines are obvious.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", and the like indicate directions or positional relationships based on the directions or positional relationships in the operating state of the present invention, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
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, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention has been described above in connection with preferred embodiments, which are merely exemplary and illustrative. On this basis, can be right the utility model discloses carry out multiple replacement and improvement, these all fall into the utility model discloses a protection scope.
Claims (8)
1. A PVC sheath extrusion pipe type round cable mould is characterized by comprising a mould sleeve (1) and a mould core (2),
a die sleeve through hole (11) is arranged on the die sleeve (1), the die sleeve through hole (11) is formed by combining a die sleeve conical hole (111) and a die sleeve round hole (112) which are coaxial, the included angle between the side surface of the die sleeve conical hole (111) and the axis is 10-22.5 degrees,
the mold core (2) is arranged in the through hole (11) of the mold sleeve (1) and comprises an annular part (21), a conical part (22) and a fixing part (23) which are sequentially connected, the annular part (21) and the conical part (22) are coaxial, the axis position of the annular part (21) is provided with a mold core round hole (211), the axis position of the conical part (22) is provided with a mold core conical hole (221), the surface of the fixing part (23) is provided with a bulge or a groove, so that the fixing part can be clamped with extrusion molding equipment,
the side surface of the conical part (22) forms an included angle of 5-15 degrees with the axis.
2. The PVC sheath extrusion pipe type round cable mold according to claim 1,
the mould matching coefficient K of the cable mould is 1-1.1, and the mould matching coefficient K is as follows:
K＝(D big (a) /d Big (a) )/(D Small /d Small )
Wherein D is Big (a) Indicates the inner diameter, d, of the die case circular hole (112) Big (a) Represents the cable jacket outer diameter;
D small Indicates the inner diameter, d, of the circular hole (211) of the mold core Small The cable core inner diameter is indicated.
3. The PVC sheath extrusion pipe type round cable mold according to claim 1,
the ratio of the length of the die sleeve round hole (112) to the aperture of the die sleeve round hole (112) is 0.2-0.4.
4. The PVC sheath extrusion pipe type round cable mold according to claim 1,
the ratio of the length of the annular part (21) to the aperture of the circular hole (211) of the mold core is 0.8-1.2.
5. The PVC sheath extrusion pipe type round cable mold according to claim 1,
the length of the die sleeve round hole (112) is smaller than that of the annular part (21).
6. The PVC sheath extrusion pipe type round cable mold according to claim 1,
the surface of the die sleeve (1) is provided with a step (12) so that the die sleeve (1) can be clamped with the extrusion molding equipment.
7. The PVC sheath extrusion pipe type round cable mold according to claim 1,
the die further comprises a water tank which is arranged on the extension line of the through hole (11) and is used for cooling the sheath formed by the extruded tube.
8. The PVC sheath extruded pipe type round cable mold of claim 7,
the water tank is arranged at the tangential point position of a sheath stretching arc and the radial direction of the cable, and the sheath stretching arc is an arc line formed by a sheath material at the die opening after the tube is extruded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222927616.6U CN218535558U (en) | 2022-11-03 | 2022-11-03 | Extruded pipe type round cable mould for PVC sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222927616.6U CN218535558U (en) | 2022-11-03 | 2022-11-03 | Extruded pipe type round cable mould for PVC sheath |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218535558U true CN218535558U (en) | 2023-02-28 |
Family
ID=85260512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222927616.6U Active CN218535558U (en) | 2022-11-03 | 2022-11-03 | Extruded pipe type round cable mould for PVC sheath |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218535558U (en) |
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2022
- 2022-11-03 CN CN202222927616.6U patent/CN218535558U/en active Active
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