CN211566881U - Pipe extrusion type combined die for cable extrusion layer - Google Patents
Pipe extrusion type combined die for cable extrusion layer Download PDFInfo
- Publication number
- CN211566881U CN211566881U CN201922344658.5U CN201922344658U CN211566881U CN 211566881 U CN211566881 U CN 211566881U CN 201922344658 U CN201922344658 U CN 201922344658U CN 211566881 U CN211566881 U CN 211566881U
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- die
- hole
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- sleeve
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- 238000001125 extrusion Methods 0.000 title claims abstract description 53
- 229920003023 plastic Polymers 0.000 claims abstract description 46
- 239000004033 plastic Substances 0.000 claims abstract description 46
- 210000004907 gland Anatomy 0.000 claims description 16
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000004020 conductor Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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Abstract
The utility model relates to a crowded tubular assembling die on cable extrusion layer, the mold core of this assembling die and runner mouth department of die sleeve are equipped with detachable mold core nestification and die sleeve nestification respectively, change the mold core nestification of different core hole diameters, can carry out the adaptation with the sinle silk of different specifications, change the die sleeve nestification of different plastics runner hole diameters, can for the insulating or sheath of cord extrusion package different thickness, can also set up the convex ridge groove of different sizes, quantity on the nested lateral wall of die sleeve, need not adopt a plurality of die sleeves that are equipped with convex ridge groove again to insulating extrusion discernment use convex ridge; therefore the utility model discloses a one set of mould, through changing not unidimensional mold core nested with the die sleeve is nested, just can extrude the insulating or sheath of different specification sinle silk, different thickness, different figure and the convex ridge's of size discernment cable, reduced the use amount of mould, reduced the mould cost of enterprise.
Description
Technical Field
The utility model relates to a cable sheathing extrusion molding technical field especially relates to a crowded tubular assembling die on layer is extruded to cable.
Background
Cables are becoming more and more important as energy transmission carriers in today's society, and their demand is also increasing. Generally, insulation is extruded and wrapped outside a conductor of a cable, or a sheath is extruded and wrapped outside a cable core, an extruder is used for wrapping an existing cable in the extrusion wrapping process, the extrusion wrapping of the extruder mainly comprises three processes, namely extrusion type, extrusion tube type and semi-extrusion tube type, wherein the extrusion type is that an extrusion layer is directly extruded and wrapped on the conductor to achieve product shaping by generating pressure according to the angle difference between a mold core and a mold sleeve of a mold, and the extrusion layer is compact, compact and round in the manner, but the bending performance of the extruded wire core is poor, the utilization rate of the extruded wire core is low, and the cable is not economical and applicable;
the extrusion tube type process mainly depends on the die sleeve and the die core of the die to extrude materials into a tube shape, and then the tube shape is coated on the conductor or the cable core of the wire cable under the stretching action, the stretchability of the plastic is utilized to greatly improve the extrusion yield, so the extrusion tube type process is gradually replaced;
however, the extrusion type die still has disadvantages and needs to be improved because the electric wires and cables have different models and specifications, the outer diameter of the conductor or the diameter of the wire core, and the thickness of the plastic insulation and the sheath have different requirements, and some cables need to extrude a convex ridge on the insulation surface; therefore, manufacturers need to prepare a plurality of molds with different specifications to correspondingly produce cables with different sizes and extrusion layer thicknesses so as to meet the requirements of the extrusion process, thereby increasing the production cost of the manufacturers and the maintenance cost of the molds.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a crowded tubular assembling die on layer is extruded to cable.
The technical scheme of the utility model is that: the utility model provides a crowded tubular assembling die on layer is extruded to cable, includes the mold core and the die sleeve of crowded tubular structure that the concentric cover is in the same place, its characterized in that: the die sleeve is integrally in a circular truncated cone shape, a circular truncated cone-shaped accommodating cavity is formed in the inner end face of the die sleeve inwards and coaxially, the inner end face of the circular truncated cone-shaped accommodating cavity is overlapped with the inner end face of the die sleeve in a nested mode, and a first step hole communicated with the circular truncated cone-shaped accommodating cavity is formed in the outer end face of the die sleeve in the nested mode inwards and coaxially; a stepped shaft-shaped die sleeve nest is installed in the first stepped hole in a matched mode, a plastic flow passage hole is formed in the die sleeve nest along the axis, an annular gland is fixed to the middle of the outer end face of the die sleeve through a bolt and tightly presses the die sleeve nest in the first stepped hole, a hole in the middle of the annular gland corresponds to the plastic flow passage hole in the die sleeve nest, and the diameter of the hole in the middle of the annular gland is larger than that of the plastic flow passage hole;
the whole die core is also in a circular truncated cone shape, a plastic flow channel is formed between the die core nesting and the circular truncated cone-shaped accommodating cavity, a conical wire core leading-in channel is formed in the die core along the axis, a second step hole is formed between the inner end of the wire core leading-in channel and the outer end face of the die core along the axis of the die core, and the thick hole end of the second step hole is connected with the wire core leading-in channel and is matched with the wire core leading-in channel in size; and a mold core nest is arranged in the second step hole and comprises a cylindrical extrusion pipe part at the upper end and a step shaft-shaped nesting body concentrically connected with the lower end of the extrusion pipe part, a wire core hole penetrating through the nesting body and the extrusion pipe part is formed in the mold core nest along the axis, the nesting body is fixed in the second step hole, the extrusion pipe part extends into the plastic flow channel hole of the mold sleeve nest and forms an annular extrusion pipe cavity with the side wall of the plastic flow channel hole, and the end surface of the extrusion pipe part is flush with the outer end surface of the mold sleeve nest.
Preferably, the inner side surface of the die sleeve nest is provided with a plurality of ridge grooves along the axial direction.
Preferably, the hole on the annular gland is a tapered hole, and the size of the tapered hole is larger than that of the plastic runner hole in the die sleeve embedded sleeve.
Preferably, the inner end face of the mold core is provided with a connector.
Preferably, a smooth transitional bevel angle is arranged at the wire core hole on the end face of the nesting body.
Preferably, the outer diameter of the extrusion pipe part on the die core nesting is smaller than the diameter of the plastic runner hole in the die sleeve nesting.
The utility model has the beneficial technical effects that: the runner ports of the die core and the die sleeve of the combined die are respectively provided with a detachable die core nest and a detachable die sleeve nest, the die core nests with different wire core hole diameters are replaced, the die core nests can be adapted to wire cores with different specifications, the die sleeve nests with different plastic runner hole diameters are replaced, the wire cores can be extruded with insulating or protective sleeves with different thicknesses, the side walls of the die sleeve nests can also be provided with ridge grooves with different sizes and numbers, and the convex ridges of the protective sleeves are not required to be extruded by a plurality of die sleeves with the ridge grooves; therefore the utility model discloses a one set of mould, through changing not unidimensional mold core nested with the die sleeve is nested, just can extrude the insulating or sheath of different specification sinle silk, different thickness, different figure and the convex ridge's of size cable, reduced the use amount of mould, reduced the equipment cost of enterprise.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic sectional view of the present invention;
FIG. 3 is a schematic cross-sectional view of the mold core nest and the mold sleeve nest removed according to the present invention;
FIG. 4 is a schematic structural view of the mold sleeve of the present invention;
fig. 5 is a schematic perspective view of a core nest.
FIG. 1 shows a die sleeve 11, a truncated cone-shaped accommodating cavity 12, a first stepped hole 13, a die sleeve nest 131, a plastic runner hole 14, a gland 141, a hole in the middle of the gland 2, a die core 21, a wire core introduction channel 22, a second stepped hole 23, a die core nest 231, a wire core hole 232, an extrusion pipe portion 233, a nest body 233, a die sleeve body,
3. Plastic flow channel, 4 ridge grooves, 5 connectors, 6 chamfers and 7 extrusion tube cavities.
Detailed Description
First embodiment, referring to the attached drawings (1-5) of the specification, a tube-extruding type combined die for extruding layers of cables comprises a die core and a die sleeve which are concentrically sleeved together and have a tube-extruding type structure, and is characterized in that: the die sleeve is integrally in a circular truncated cone shape, a circular truncated cone-shaped accommodating cavity is formed in the inner end face of the die sleeve inwards and coaxially, the circular truncated cone-shaped accommodating cavity is used for mounting the die core on one hand and is used as a plastic sheath or an insulating entering channel on the other hand, the inner end face of the circular truncated cone-shaped accommodating cavity is overlapped with the inner end face of the die sleeve nesting, and a first step hole communicated with the circular truncated cone-shaped accommodating cavity is formed in the outer end face of the die sleeve nesting inwards and coaxially; a stepped shaft-shaped die sleeve nest is installed in the first stepped hole in a matched mode, a plastic flow passage hole is formed in the die sleeve nest along the axis, the plastic flow passage hole is communicated with the truncated cone-shaped cavity to form a flow passage of the wire core wrapping sheath, an annular gland is fixed in the middle of the outer end face of the die sleeve through a bolt, the die sleeve nest is tightly pressed in the first stepped hole by the annular gland, a hole in the middle of the annular gland corresponds to the plastic flow passage hole in the die sleeve nest, the diameter of the hole in the middle of the annular gland is larger than that of the plastic flow passage hole, and the die sleeve nest in the stepped hole can be taken out for replacement or maintenance by removing the annular gland;
the die core is integrally in a truncated cone shape, a plastic flow channel is formed between the die core and the truncated cone-shaped accommodating cavity, molten plastic can flow into a plastic flow channel hole nested in the die sleeve from the plastic flow channel, a conical wire core leading-in channel is formed in the die core along the axis and is beneficial to leading the wire core into the wire core hole, a second step hole is formed between the inner end of the wire core leading-in channel and the outer end face of the die core nest along the axis of the die core, and the thick hole end of the second step hole is connected with the wire core leading-in channel and is matched with the wire core leading-in; a mold core nest is fixedly arranged in the second step hole and comprises a cylindrical extrusion pipe part at the upper end and a step shaft-shaped nesting body concentrically connected with the lower end of the extrusion pipe part, a wire core hole penetrating through the nesting body and the extrusion pipe part is formed in the mold core nest along the axis, the nesting body is fixed in the second step hole, the extrusion pipe part extends into the plastic flow channel hole of the mold sleeve nest and a ring-shaped extrusion pipe cavity is formed between the side walls of the plastic flow channel hole, plastic is extruded from the extrusion pipe cavity of the plastic cavity and then is coated on the wire core, and the end face of the extrusion pipe part is flush with the outer end face of the mold sleeve nest.
The inner side surface of the die sleeve nest is provided with a plurality of ridge grooves along the axial direction, when the sheaths with different numbers of ridges on the insulation of a cable with a certain specification are extruded, the extrusion of the sheaths with different numbers of ridges and sizes of ridges is realized by only adopting the same die sleeve and replacing the die sleeve nest with different numbers and sizes of ridges, a plurality of die sleeves with different ridges are not needed, the using amount of the die sleeve is reduced, and the cost is reduced.
The hole on the annular gland is a tapered hole, the size of the tapered hole is larger than that of the plastic flow channel hole in the die sleeve embedded sleeve, the design of the tapered hole is beneficial to discharging residual sheath or insulating plastic when the cable is extruded, and the residual sheath or insulating plastic is prevented from being deposited at the sheath hole.
And the inner end surface of the mold core is provided with a connector which is used for connecting the mold core with the extruder.
The wire core hole on the end face of the embedded sleeve body is provided with a smooth transitional oblique angle, and the oblique angle can reduce the friction force when a wire core enters the wire core hole and prevent the conductor or the cable core from being damaged.
The outer diameter of the extrusion pipe part on the die core nesting is smaller than the diameter of the plastic flow passage hole in the die sleeve nesting, and an extrusion pipe type sheath wrapping space is formed between the outer side surface of the extrusion pipe part and the plastic flow passage hole.
The utility model discloses a working process does:
a. the core is led into the mold core from the core leading-in hole, and then the core penetrates out from the core hole of the mold core nest arranged at the inner end of the mold core, so that the mold core nests with the core holes with different diameters can be replaced to be matched with the cores with different specifications, and the combined mold can adapt to the passing of the cores with various specifications only by replacing the mold core nests;
b. the core penetrates out of the core hole of the core nest and then coaxially enters the plastic runner hole in the die sleeve nest, at the moment, the molten plastic for extruding insulation or sheath flows into the extruding pipe cavity from the plastic runner between the core and the circular truncated cone-shaped accommodating cavity of the die sleeve, the plastic flowing into the extruding pipe cavity is extruded and then wrapped on the core to form a sheath, when the insulation or sheath with different thicknesses needs to be extruded on the core, the core can be embedded by replacing the die sleeves with the plastic runner holes with different diameters, and the plastic runner hole can be provided with convex ridge grooves with different sizes and quantities to extrude the sheath with convex ridges with different sizes.
Claims (6)
1. The utility model provides a crowded tubular assembling die on layer is extruded to cable, includes the mold core and the die sleeve of crowded tubular structure that the concentric cover is in the same place, its characterized in that: the die sleeve is integrally in a circular truncated cone shape, a circular truncated cone-shaped accommodating cavity is formed in the inner end face of the die sleeve inwards and coaxially, the inner end face of the circular truncated cone-shaped accommodating cavity is overlapped with the inner end face of the die sleeve in a nested mode, and a first step hole communicated with the circular truncated cone-shaped accommodating cavity is formed in the outer end face of the die sleeve in the nested mode inwards and coaxially; a stepped shaft-shaped die sleeve nest is installed in the first stepped hole in a matched mode, a plastic flow passage hole is formed in the die sleeve nest along the axis, an annular gland is fixed to the middle of the outer end face of the die sleeve through a bolt and tightly presses the die sleeve nest in the first stepped hole, a hole in the middle of the annular gland corresponds to the plastic flow passage hole in the die sleeve nest, and the diameter of the hole in the middle of the annular gland is larger than that of the plastic flow passage hole;
the whole die core is also in a circular truncated cone shape, a plastic flow channel is formed between the die core nesting and the circular truncated cone-shaped accommodating cavity, a conical wire core leading-in channel is formed in the die core along the axis, a second step hole is formed between the inner end of the wire core leading-in channel and the outer end face of the die core along the axis of the die core, and the thick hole end of the second step hole is connected with the wire core leading-in channel and is matched with the wire core leading-in channel in size; and a mold core nest is arranged in the second step hole and comprises a cylindrical extrusion pipe part at the upper end and a step shaft-shaped nesting body concentrically connected with the lower end of the extrusion pipe part, a wire core hole penetrating through the nesting body and the extrusion pipe part is formed in the mold core nest along the axis, the nesting body is fixed in the second step hole, the extrusion pipe part extends into the plastic flow channel hole of the mold sleeve nest and forms an annular extrusion pipe cavity with the side wall of the plastic flow channel hole, and the end surface of the extrusion pipe part is flush with the outer end surface of the mold sleeve nest.
2. The extruded tube type assembling die for cable extrusion layer according to claim 1, wherein: the inner side surface of the die sleeve nest is provided with a plurality of ridge grooves along the axial direction.
3. The extruded tube type assembling die for cable extrusion layer according to claim 1, wherein: the hole on the annular gland is a tapered hole, and the size of the tapered hole is larger than that of the plastic flow passage hole in the die sleeve embedded sleeve.
4. The extruded tube type assembling die for cable extrusion layer according to claim 1, wherein: and the inner end surface of the mold core is provided with a connector.
5. The extruded tube type assembling die for cable extrusion layer according to claim 1, wherein: and a smooth transitional oblique angle is arranged at the position of the wire core hole on the end surface of the embedded sleeve body.
6. The combination die of claim 1 in the form of a tube for extruding an extruded layer of a cable
Characterized in that: the outer diameter of the extrusion pipe part on the die core nesting is smaller than the diameter of the plastic runner hole in the die sleeve nesting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922344658.5U CN211566881U (en) | 2019-12-24 | 2019-12-24 | Pipe extrusion type combined die for cable extrusion layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922344658.5U CN211566881U (en) | 2019-12-24 | 2019-12-24 | Pipe extrusion type combined die for cable extrusion layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211566881U true CN211566881U (en) | 2020-09-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922344658.5U Expired - Fee Related CN211566881U (en) | 2019-12-24 | 2019-12-24 | Pipe extrusion type combined die for cable extrusion layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211566881U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114055754A (en) * | 2021-11-08 | 2022-02-18 | 江苏亨通电力电缆有限公司 | Combined type offset core adjustment-free extrusion die |
| JP7470882B1 (en) | 2024-01-26 | 2024-04-18 | 東京インキ株式会社 | Die Set and Extruder |
-
2019
- 2019-12-24 CN CN201922344658.5U patent/CN211566881U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114055754A (en) * | 2021-11-08 | 2022-02-18 | 江苏亨通电力电缆有限公司 | Combined type offset core adjustment-free extrusion die |
| JP7470882B1 (en) | 2024-01-26 | 2024-04-18 | 東京インキ株式会社 | Die Set and Extruder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200925 |