CN211566880U - Extrusion type combined die for cable extrusion layer - Google Patents
Extrusion type combined die for cable extrusion layer Download PDFInfo
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- CN211566880U CN211566880U CN201922342452.9U CN201922342452U CN211566880U CN 211566880 U CN211566880 U CN 211566880U CN 201922342452 U CN201922342452 U CN 201922342452U CN 211566880 U CN211566880 U CN 211566880U
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- die
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- die sleeve
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- 238000001125 extrusion Methods 0.000 title claims abstract description 51
- 210000004907 gland Anatomy 0.000 claims description 13
- 238000009413 insulation Methods 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000006978 adaptation Effects 0.000 abstract description 2
- 239000004020 conductor Substances 0.000 description 10
- 238000012856 packing Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007765 extrusion coating Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to an extrusion type assembling die of cable extrusion layer, the die core of assembling die and the runner mouth department of die sleeve are equipped with detachable die core nestification and die sleeve nestification respectively, change the die 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 extrusion hole diameters, can extrude the insulation or the sheath of different thickness for the sinle silk, can also set up the convex ridge groove of different size, 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 extrude the convex ridge to the insulation or the sheath; 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 quantity or the convex ridge's of size cable, reduced the use amount of mould, reduced the manufacturing cost of enterprise.
Description
Technical Field
The utility model relates to a cable sheathing extrusion molding technical field especially relates to an extrusion formula assembling die on layer is extruded to cable.
Background
The cable needs to be extruded with insulation or sheath in the cabling process, usually an extrusion tube type or extrusion type is adopted, the extrusion tube type extrusion is to extrude plastic into a tube firstly, the insulation or sheath is formed on the surface of a cable core or a conductor by stretching and extrusion coating, and the thickness of the insulation or sheath is determined by the size of a die and the stretching ratio of the plastic; the surface of a tubular sheath or insulation formed by extruding tubular extrusion has twist marks, the sheath or insulation is easy to loosen, the appearance is not round and smooth, the outer diameter ratio is difficult to control, and the appearance is also influenced.
The extrusion type extrusion coating is adopted, plastic is extruded on the surface of a cable core or a conductor through pressure, and a round sheath or insulation is formed through a wire-receiving section at the outlet end of a die sleeve.
Whether the cable is a tube-extruding type extruded sheath or an extruded type extruded sheath, the diameter of the wire core and the thickness of the plastic insulation or the sheath are different due to different voltage grades, specifications and purposes of the cable, and sometimes a convex ridge needs to be pressed on the insulation surface; therefore, manufacturers need to prepare a plurality of moulds with different specifications to correspondingly produce cables with different sizes so as to meet the requirements of customers, so that the equipment cost of the manufacturers is increased, the processing and maintenance cost of the moulds is increased, and the reduction of the overall production cost of enterprises is not facilitated.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a cable extrudes extrusion formula group on layer
And (5) closing the mold.
The technical scheme of the utility model is that: the utility model provides a cable extrusion formula assembling die on layer, includes die core and the die sleeve of concentric extrusion formula structure together that overlaps, its characterized in that: the die sleeve is characterized by further comprising a step shaft-shaped die core nesting and a die sleeve nesting, wherein a positioning through hole is formed in the die core nesting along the axis, a wrapping hole is formed in the die sleeve nesting along the axis, the die sleeve is integrally in a circular table shape, a circular table-shaped cavity is formed in the inner end face of the die sleeve in an inward coaxial mode, the inner end face of the circular table-shaped cavity corresponds to the inner end face of the die sleeve, a step hole A communicated to the circular table-shaped cavity is formed in the outer end face of the die sleeve in an inward coaxial mode, the die sleeve nesting is installed in the step hole A in a matched mode, an annular gland is fixed in the middle of the outer end face of the die sleeve through bolts, the die sleeve is fixed in the step hole A in the nested mode through the annular gland, and a hole in the middle of the annular gland;
the whole mold core is also in a round table shape, a connector is coaxially arranged on the inner end face of the mold core, a plastic flow channel is formed between the mold core and the round table-shaped cavity, a top pipe mounting hole is coaxially formed inside the mold core, an annular thread groove is coaxially formed in the outer end of the top pipe mounting hole, a step hole B is coaxially formed between the inner end of the top pipe mounting hole and the outer end face of the mold core, the thick hole end of the step hole B is correspondingly communicated with the top pipe mounting hole, and the mold core nesting is installed in the step hole B in a matched mode; an inner top type fixing pipe is inserted into the top pipe mounting hole, the inner end face of the inner top type fixing pipe is pressed on the inner end face of the mold core nesting, the inner diameter of the inner top type fixing pipe is larger than the diameter of the positioning through hole of the mold core nesting, an annular fastening screw is coaxially arranged on the side face close to the outer end of the inner top type fixing pipe, and the fastening screw is in matched connection with a thread groove in the top pipe mounting hole.
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 extrusion hole in the die sleeve embedded sleeve.
Preferably, the outer end of the inner top type fixed pipe is provided with a nut for screwing.
Preferably, the size of the positioning through hole in the die core nest is smaller than that of the extrusion hole in the die sleeve nest.
Preferably, the inner edge of the positioning through hole of the mold core nest is cut with a bevel.
Preferably, the top pipe mounting hole is a stepped hole.
The utility model has the beneficial technical effects that: the utility model discloses a runner mouth department of mold core and die sleeve is equipped with detachable mold core nestification and die sleeve nestification respectively, changes the mold core nestification of different wire core hole diameters, can carry out the adaptation with the sinle silk of different specifications, changes the die sleeve nestification of different extrusion hole diameters, can for the wire core extrusion wrap the insulation or the sheath of different thickness, still can 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 extrude the convex ridge to the insulation or the sheath; 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 specifications, different quantity or the convex ridge's of size cable, reduced the use amount of mould, reduced the manufacturing cost of enterprise.
In addition, an inner top type fixing pipe which is pressed on the die core nesting is inserted into the outer die core, and the inner top type fixing pipe tightly presses the die core nesting in the step hole B, so that the phenomenon that the normal extrusion of the wire core is influenced due to the fact that the looseness occurs between the die core nesting and the die core is prevented.
Drawings
FIG. 1 is a schematic sectional view of the present invention;
FIG. 2 is a schematic sectional view of the mold core nest and the mold sleeve nest removed according to the present invention;
FIG. 3 is a schematic perspective view of the internal fixation type fixing tube of the present invention;
fig. 4 is a schematic perspective view of the die sleeve nest and the die core nest according to the present invention.
Fig. 5 is a schematic view of the three-dimensional structure of the present invention.
In the drawing, 1, a die sleeve, 11, a die sleeve nesting hole, 111, a pack hole, 112, a ridge groove, 12, a circular truncated cone-shaped cavity, 13, a step hole A, 14, an annular gland, 141, a hole in the middle of the annular gland, 2, a die core, 21, a die core nesting hole, 211, a positioning through hole, 212, a chamfer, 22, a top pipe mounting hole, 23 and a step hole
B, 24. connectors, 4. inner top type fixing pipes, 41 fastening screws and 42 nuts.
Detailed Description
First embodiment, referring to the attached drawings (1-5) of the specification, a cable extrusion layer extrusion combined die comprises a die core and a die sleeve of an extrusion structure which are concentrically sleeved together, and is characterized in that: the die sleeve is characterized by further comprising a stepped shaft-shaped die core nesting and a die sleeve nesting, wherein a positioning through hole is formed in the die core nesting along the axis, a packing hole is formed in the die sleeve nesting along the axis, the die sleeve is integrally in a circular truncated cone shape, a circular truncated cone-shaped cavity is formed in the die sleeve in an inward coaxial mode on the inner end face of the die sleeve, the circular truncated cone-shaped cavity is used for mounting the die core on one hand and serves as a plastic sheath inlet channel on the other hand, the inner end face of the circular truncated cone-shaped cavity corresponds to the inner end face of the die sleeve, a stepped hole A communicated with the circular truncated cone-shaped cavity is formed in the outer end face of the die sleeve in an inward coaxial mode, the die sleeve nesting is mounted in the stepped hole A in a matched mode, the packing hole in the die sleeve nesting and the circular truncated cone-shaped cavity are communicated to form a flow channel for packing the wire core or the insulation packing sheath, an annular gland is fixed in the middle of the outer end face of the die sleeve through bolts, the annular, the hole in the middle of the annular gland corresponds to the extrusion hole in the die sleeve embedded sleeve;
the die core is also in a round table shape integrally, a connector is coaxially arranged on the inner end face of the die core and is used for connecting the die core with an extruder, a plastic flow channel is formed between the die core and the round table-shaped cavity, a top pipe mounting hole is coaxially formed in the die core, an annular thread groove is coaxially formed in the outer end of the top pipe mounting hole, a step hole B is coaxially formed between the inner end of the top pipe mounting hole and the outer end face of the die core, the thick hole end of the step hole B is correspondingly communicated with the top pipe mounting hole, the die core nest is installed in the step hole B in a matched mode, and molten plastic can flow into a package extruding hole of the die sleeve nest from the plastic flow channel; an inner top type fixing pipe is inserted into the top pipe mounting hole, the inner end face of the inner top type fixing pipe is pressed on the inner end face of the mold core nesting, the mold core nesting is tightly pressed in the step hole B, the phenomenon that the normal extrusion of the wire core or the conductor is influenced due to the fact that looseness occurs between the mold core nesting and the mold core is avoided, the inner diameter of the inner top type fixing pipe is larger than the diameter of the positioning through hole of the mold core nesting, an annular fastening screw is coaxially arranged on the side face close to the outer end of the inner top type fixing pipe, the fastening screw is matched with and fixedly connected with the size of a thread groove in the top pipe mounting hole, and the top pipe mounting hole is a step hole.
The inner side surface of the die sleeve nest is provided with a plurality of ridge grooves along the axial direction, when wire cores with different numbers of identification ridges are required to be extruded on conductor insulation, the extrusion of the die sleeves with different numbers of ridges is realized by replacing the die sleeve nest with different numbers of ridges by only adopting the same die sleeve, a plurality of die sleeves with different ridges are not required, the using amount of the die sleeves 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 extrusion hole in the die sleeve embedded sleeve, the design of the tapered hole is beneficial to discharging residual insulation or sheath plastic when the cable is extruded, and the residual sheath plastic is prevented from being deposited at the extrusion hole.
And the outer end of the inner top type fixing pipe is provided with a nut for screwing.
The size of the positioning through hole in the die core nest is smaller than that of the extruding hole in the die core nest, and after the wire core enters the extruding hole from the positioning through hole, an annular space for extruding insulation or a sheath is formed between the extruding hole and the wire core.
The inner edge of the positioning through hole of the die core nest is cut with a smooth bevel. The bevel reduces friction and prevents scratching of the wire core or conductor as it enters the positioning via.
The utility model discloses a working process does:
a. the core is led into the mold core from the inner top type fixing pipe, and then the core penetrates out of the positioning through hole of the mold core nest arranged at the inner end of the mold core, so that the mold core nest with the positioning through holes of different diameters can be replaced to be matched with the core or the conductor of different specifications, and therefore the combined mold can be suitable for the core and the conductor of various specifications to pass through only by replacing the mold core nest;
b. the core penetrates out of the positioning through hole of the core nest and then coaxially enters the extrusion hole in the die sleeve nest, at the moment, molten plastic for wrapping a sheath or insulation flows into the extrusion hole from a plastic runner formed between the core and the truncated cone-shaped cavity and wraps the core or the conductor to form the sheath or the insulation, the cable is formed by extruding and cooling from the front end of the die sleeve after extrusion, and when the sheath with different thicknesses is required to be extruded on the core or the conductor, the core or the conductor can be extruded and wrapped by replacing the die sleeve nest with the extrusion holes with different diameters.
Claims (7)
1. The utility model provides a cable extrusion formula assembling die on layer, includes die core and the die sleeve of concentric extrusion formula structure together that overlaps, its characterized in that: the die sleeve is characterized by further comprising a step shaft-shaped die core nesting and a die sleeve nesting, wherein a positioning through hole is formed in the die core nesting along the axis, a wrapping hole is formed in the die sleeve nesting along the axis, the die sleeve is integrally in a circular table shape, a circular table-shaped cavity is formed in the inner end face of the die sleeve in an inward coaxial mode, the inner end face of the circular table-shaped cavity corresponds to the inner end face of the die sleeve, a step hole A communicated to the circular table-shaped cavity is formed in the outer end face of the die sleeve in an inward coaxial mode, the die sleeve nesting is installed in the step hole A in a matched mode, an annular gland is fixed in the middle of the outer end face of the die sleeve through bolts, the die sleeve is fixed in the step hole A in the nested mode through the annular gland, and a hole in the middle of the annular gland;
the whole mold core is also in a round table shape, a connector is coaxially arranged on the inner end face of the mold core, a plastic flow channel is formed between the mold core and the round table-shaped cavity, a top pipe mounting hole is coaxially formed inside the mold core, an annular thread groove is coaxially formed in the outer end of the top pipe mounting hole, a step hole B is coaxially formed between the inner end of the top pipe mounting hole and the outer end face of the mold core, the thick hole end of the step hole B is correspondingly communicated with the top pipe mounting hole, and the mold core nesting is installed in the step hole B in a matched mode; an inner top type fixing pipe is inserted into the top pipe mounting hole, the inner end face of the inner top type fixing pipe is pressed on the inner end face of the mold core nesting, the inner diameter of the inner top type fixing pipe is larger than the diameter of the positioning through hole of the mold core nesting, an annular fastening screw is coaxially arranged on the side face close to the outer end of the inner top type fixing pipe, and the fastening screw is in matched connection with a thread groove in the top pipe mounting hole.
2. The extrusion die assembly of cable extrusion layers as claimed in 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 extrusion die assembly of cable extrusion layers as claimed in 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 extrusion hole in the die sleeve embedded sleeve.
4. The extrusion die assembly of cable extrusion layers as claimed in claim 1, wherein: and the outer end of the inner top type fixing pipe is provided with a nut for screwing.
5. The extrusion die assembly of cable extrusion layers as claimed in claim 1, wherein: the size of the positioning through hole in the die core nest is smaller than that of the extrusion hole in the die sleeve nest.
6. The extrusion die assembly of cable extrusion layers as claimed in claim 1, wherein: the inner edge of the positioning through hole of the die core nest is cut with an oblique angle.
7. The extrusion die assembly of cable extrusion layers as claimed in claim 1, wherein: the jacking pipe mounting hole is a stepped hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922342452.9U CN211566880U (en) | 2019-12-24 | 2019-12-24 | Extrusion type combined die for cable extrusion layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922342452.9U CN211566880U (en) | 2019-12-24 | 2019-12-24 | Extrusion type combined die for cable extrusion layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211566880U true CN211566880U (en) | 2020-09-25 |
Family
ID=72550233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922342452.9U Expired - Fee Related CN211566880U (en) | 2019-12-24 | 2019-12-24 | Extrusion type combined die for cable extrusion layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211566880U (en) |
-
2019
- 2019-12-24 CN CN201922342452.9U patent/CN211566880U/en not_active Expired - Fee Related
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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 |