CN222271211U - Combined extrusion mold sleeve - Google Patents
Combined extrusion mold sleeve Download PDFInfo
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- CN222271211U CN222271211U CN202420205167.0U CN202420205167U CN222271211U CN 222271211 U CN222271211 U CN 222271211U CN 202420205167 U CN202420205167 U CN 202420205167U CN 222271211 U CN222271211 U CN 222271211U
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- hole
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- die nozzle
- cover plate
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Abstract
The utility model provides a combined extrusion molding die sleeve, which relates to the technical field of cable dies, wherein a first die nozzle is arranged in a first through hole of a die holder, a second die nozzle is arranged in a mounting groove of a cover plate, the cover plate can be arranged at one end of the die holder, so that the first die nozzle and the second die nozzle can be combined together, the first through hole, the second through hole, the third through hole and the fourth through hole are sequentially communicated to form an extrusion molding channel, when the die holder is arranged in a machine head of an extrusion molding machine, the extrusion molding machine can extrude heated and melted high-temperature plastic from the extrusion molding channel, the high-temperature plastic is extruded from the second die nozzle after being shaped through the first die nozzle, the first die nozzle is made of hard alloy materials, the first die nozzle can resist high temperature and has a smooth surface, the surface finish of the plastic extruded to the second die nozzle can be improved, the surface of the second die nozzle is made of polytetrafluoroethylene materials, and the plastic is not easy to flow when extruded from the second die nozzle.
Description
Technical Field
The utility model relates to the technical field of cable molds, in particular to a combined extrusion molding die sleeve.
Background
At present, when a cable is produced, an extrusion molding method is mainly used for processing and producing a cable insulating layer, a molten insulating material is extruded onto a cable conductor through an extruder, and the cable insulating layer is formed on the surface of the cable conductor after the insulating material is cooled.
Chinese patent CN106952695A discloses an eccentric die device free of adjustment for multi-core cable insulation extrusion and extrusion manufacturing process, the die device comprises a die sleeve seat and a porous die core, the porous die core is assembled in the die sleeve seat, a gap is formed between the inner wall surface of the die sleeve seat and the outer wall surface of the porous die core, the front end of the porous die core is conical, a die core cavity which is radially reduced towards the front end surface is opened at the rear end of the die core, one end of the die core cavity extends outwards, a plurality of die core nozzles are opened at the extending part, the die sleeve seat is arranged on a machine head of an extrusion molding machine, after the insulation material is heated by the extrusion molding machine, the melted insulation material is extruded from the die sleeve seat to the die core nozzle, and an insulation layer is formed on the surface of a cable conductor by extruding from the die core nozzle.
But the adhesion of insulating material is stronger to in the in-process of extruding molten insulating material from die sleeve seat to mold core mouth department, insulating material's temperature can reduce, leads to insulating material's adhesion to further strengthen, insulating material can produce the drooling of different degree in mold core mouth department, can adhere on insulating layer surface, seriously influences production quality and production efficiency.
Disclosure of utility model
In view of the above, the present utility model provides a co-extrusion molding die sleeve to solve the problem of drooling during the process of producing the cable insulation layer by using the extrusion molding method.
The technical scheme of the utility model is realized as follows:
The utility model provides a combined extrusion molding die sleeve, which comprises a die holder, a first die nozzle, a second die nozzle and a cover plate, wherein the die holder is provided with a die cavity;
The die holder is provided with a first through hole, the first die nozzle is arranged in the first through hole, the first die nozzle is provided with a second through hole, the first through hole is communicated with the second through hole, and the first die nozzle is made of hard alloy materials;
The second die nozzle is provided with a third through hole, and is made of polytetrafluoroethylene materials;
The cover plate is provided with a mounting groove and a fourth through hole which are mutually communicated, the second die nozzle is mounted in the mounting groove, the cover plate is mounted at one end of the die holder, so that the first die nozzle and the second die nozzle are combined together, and the first through hole, the second through hole, the third through hole and the fourth through hole are sequentially communicated to form an extrusion molding channel.
On the basis of the technical scheme, preferably, the first through hole comprises a first conical hole section and a first round hole section, the first conical hole section is contracted towards the axis of the first conical hole section and then transits into the first round hole section, and the first die nozzle is arranged in the first round hole section.
On the basis of the technical scheme, preferably, the second through hole comprises a second conical hole section and a second round hole section, the second conical hole section is transited into the second round hole section after shrinking towards the axis of the second conical hole section, and the second round hole section is communicated with the third through hole.
On the basis of the above technical solution, preferably, the inner wall of the second tapered hole section and the inner wall of the first tapered hole section are flush.
On the basis of the above technical scheme, preferably, the third through hole is a tapered hole, one end of the third through hole with smaller aperture is communicated with the second round hole section, and one end of the third through hole with larger aperture is communicated with the fourth through hole.
On the basis of the above technical solution, preferably, the fourth through hole is a tapered hole, and one end of the fourth through hole with smaller aperture is communicated with the third through hole.
On the basis of the above technical scheme, preferably, the die holder is provided with a plurality of first connecting holes towards the end face of the cover plate, the cover plate is provided with a plurality of second connecting holes, the first connecting holes and the second connecting holes are arranged in a one-to-one correspondence manner, and the first connecting holes and the second connecting holes are inserted into the connecting pieces so that the cover plate and the die holder are fixed.
On the basis of the above technical solution, preferably, the first through hole, the second through hole, the third through hole and the fourth through hole are coaxially arranged.
On the basis of the technical scheme, preferably, the thickness of the second die nozzle is larger than the groove depth of the mounting groove.
On the basis of the above technical solution, preferably, the diameter of the fourth through hole is larger than the diameter of the third through hole.
Compared with the prior art, the combined extrusion molding die sleeve has the following beneficial effects:
(1) By arranging the first die nozzle and the second die nozzle, wherein the first die nozzle is arranged in a first through hole of the die holder, the second die nozzle is arranged in a mounting groove of the cover plate, the cover plate can be arranged at one end of the die holder, so that the first die nozzle and the second die nozzle can be combined together, and the first through hole, the second through hole, the third through hole and the fourth through hole are sequentially communicated to form an extrusion molding channel, when the die holder is arranged in a machine head of an extruding machine, the extruding machine can extrude heated and melted high-temperature plastic from the extrusion molding channel, the high-temperature plastic is molded through the first die nozzle and then extruded from the second die nozzle, the first die nozzle is made of hard alloy materials, so that the first die nozzle can resist high temperature and has smooth surface, the surface finish of the plastic extruded to the second die nozzle can be improved, the second die nozzle is made of polytetrafluoroethylene materials, the surface of the second die nozzle has good non-tackiness, and the plastic is not easy to flow out when extruded from the second die nozzle;
(2) The thickness of the second die nozzle is larger than the groove depth of the mounting groove of the cover plate, so that when the cover plate is mounted on the die holder, the second die nozzle can be extruded, and the first die nozzle and the second die nozzle can be tightly connected together.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a split construction of a combination extrusion die sleeve of the present utility model;
FIG. 2 is a schematic view of a combination extrusion die sleeve according to the present utility model;
FIG. 3 is a top view of a combination extrusion die sleeve of the present utility model.
Reference numerals:
1. The die comprises a die holder, a first through hole, a first connecting hole, a first die nozzle, a second through hole, a second die nozzle, a third through hole, a cover plate, a mounting groove, a fourth through hole, a second through hole, a third through hole, a fourth through hole, a connecting hole and a connecting hole.
Detailed Description
The following description of the embodiments of the present utility model will clearly and fully describe the technical aspects of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.
As shown in fig. 1 and 2, a combined extrusion die sleeve of the present utility model comprises a die holder 1, a first die nozzle 2, a second die nozzle 3 and a cover plate 4;
The die holder 1 is provided with a first through hole 11, the first die nozzle 2 is arranged in the first through hole 11, the first die nozzle 2 is provided with a second through hole 21, the first through hole 11 is communicated with the second through hole 21, and the first die nozzle 2 is made of hard alloy materials;
the second die nozzle 3 is provided with a third through hole 31, and the second die nozzle 3 is made of polytetrafluoroethylene material;
The cover plate 4 is provided with a mounting groove 41 and a fourth through hole 42 which are communicated with each other, the second die tip 3 is mounted in the mounting groove 41, the cover plate 4 is mounted at one end of the die holder 1, so that the first die tip 2 and the second die tip 3 are combined together, and the first through hole 11, the second through hole 21, the third through hole 31 and the fourth through hole 42 are sequentially communicated to form an extrusion molding channel.
Specifically, the combined extrusion die sleeve may include a die holder 1, a first die nozzle 2, a second die nozzle 3 and a cover plate 4, wherein a first through hole 11 may be provided in the die holder 1, the die holder 1 is used for being installed at a die head of an extrusion molding machine, so that the die head is communicated with the first through hole 11, and the extrusion molding machine may extrude heated and melted high-temperature plastic into the first through hole 11.
The first die nozzle 2 can be installed in the first through hole 11, one end face of the first die nozzle 2 is flush with one end face of the die holder 1, a second through hole 21 is formed in the first die holder 1, the second through hole 21 is communicated with the first through hole 11, plastic extruded by the plastic extruder can be extruded from the first through hole 11 to the second through hole 21, and the first die nozzle 2 is made of hard alloy materials, so that the first die nozzle 2 can resist high temperature and has a smooth surface.
The second die 3 may be provided with a third through hole 31, and the second die 3 is made of polytetrafluoroethylene material, so that the surface of the second die 3 has good non-tackiness, the cover plate 4 may be provided with a mounting groove 41 and a fourth through hole 42 which are mutually communicated, the second die 3 may be mounted in the mounting groove 41, so that the third through hole 31 and the fourth through hole 42 are communicated, the cover plate 4 may be mounted at one end of the die holder 1 provided with the first die 2, so that the first die 2 and the second die 3 may be combined together, and the first through hole 11, the second through hole 21, the third through hole 31 and the fourth through hole 42 are sequentially communicated to form an extrusion molding passage.
When the die holder 1 is arranged in a machine head of the plastic extruding machine, the plastic extruding machine can extrude heated and melted high-temperature plastic from an extrusion molding channel, more clearly, the high-temperature plastic is firstly shaped through the first die nozzle 2 and then extruded from the second die nozzle 3, the first die nozzle 2 is made of hard alloy materials, the first die nozzle 2 can resist high temperature and has smooth surface, the surface finish of the plastic extruded to the second die nozzle 3 can be improved, the second die nozzle 3 is made of polytetrafluoroethylene materials, the surface of the second die nozzle 3 has good non-tackiness, and the plastic is not easy to flow when extruded from the second die nozzle 3.
As shown in fig. 1 and 2, in some embodiments, the first through hole 11 includes a first tapered hole section and a first circular hole section, the first tapered hole section transitions into the first circular hole section after shrinking toward its axis, and the first die nozzle 2 is disposed in the first circular hole section.
Specifically, the first through hole 11 may include a first tapered hole section and a first circular hole section, the first tapered hole section transitions to the first circular hole section after shrinking toward its axis, more specifically, the smaller end of the first tapered hole section is communicated with the first circular hole section, the first die nozzle 2 may be disposed in the first circular hole section, when the die holder 1 is installed on the extruder, the heated and melted high-temperature plastic is extruded from the larger end of the first tapered hole Duan Zhijing to the smaller end of the first tapered hole section, and a larger extrusion force may be generated to extrude the high-temperature plastic to the first die nozzle 2.
As shown in fig. 1 and 2, in some embodiments, the second through hole 21 includes a second tapered hole section and a second circular hole section, where the second tapered hole section transitions to the second circular hole section after shrinking toward its axis, and the second circular hole section communicates with the third through hole 31.
Specifically, the second through hole 21 may include a second tapered hole section and a second circular hole section, where the first tapered hole section transitions to the second circular hole section after shrinking toward its axis, and more specifically, one end of the second tapered hole section with a smaller diameter is communicated with the second circular hole section, and the second circular hole section is communicated with the third through hole 31, that is, when the high-temperature plastic is extruded from the first die nozzle 2 to the second die nozzle 3, the larger end of the second tapered hole Duan Zhijing is extruded to the smaller end of the second tapered hole section with a smaller diameter, and the plastic is extruded from the smaller end of the second tapered hole section to the second die nozzle 3, so that a larger extrusion force can be generated to extrude the plastic to the second die nozzle 3.
As shown in fig. 1 and 2, in some embodiments, the inner wall of the second tapered bore section is disposed flush with the inner wall of the first tapered bore section.
Specifically, the first die nozzle 2 can be installed in the first round hole section of the die holder 1, so that the second conical hole section of the first die nozzle 2 can be directly communicated with the first conical hole section of the die holder 1, and the inner wall of the second conical hole section and the inner wall of the first conical hole section are flush, so that high-temperature plastic can be extruded to the first die nozzle 2 along a smooth channel, and the extrusion is more convenient.
As shown in fig. 1 and 2, in some embodiments, the third through hole 31 is a tapered hole, the smaller end of the third through hole 31 communicates with the second circular hole segment, and the larger end of the third through hole 31 communicates with the fourth through hole 42.
Specifically, the third through hole 31 is a tapered hole, when the first die nozzle 2 and the second die nozzle 3 are combined together, the end of the third through hole 31 with smaller aperture can be communicated with the second round hole section, so that the first die nozzle 2 and the second die nozzle 3 are communicated together, the end of the third through hole 31 with larger aperture can be communicated with the first through hole 11, so that after plastic is extruded from the first die nozzle 2 to the second die nozzle 3, plastic can be extruded from the end with smaller aperture to the end with larger aperture in the second die nozzle 3, and plastic can be conveniently extruded from the second die nozzle 3.
As shown in fig. 1 and 2, in some embodiments, the fourth through hole 42 is a tapered hole, and the smaller end of the fourth through hole 42 communicates with the third through hole 31.
Specifically, the fourth through hole 42 may also be a tapered hole, and the end of the fourth through hole 42 with smaller aperture may be in communication with the third through hole 31, i.e., the plastic extruded from the second die 3 may be extruded from the end of the fourth through hole 42 with larger aperture, which may further facilitate the extrusion of the plastic.
As shown in fig. 1 to 3, in some embodiments, a plurality of first connecting holes 12 are formed on an end surface of the die holder 1 facing the cover plate 4, a plurality of second connecting holes 43 are formed on the cover plate 4, the plurality of first connecting holes 12 and the plurality of second connecting holes 43 are arranged in a one-to-one correspondence manner, and connectors are inserted into the first connecting holes 12 and the second connecting holes 43, so that the cover plate 4 and the die holder 1 are fixed.
Specifically, the end face of the die holder 1, on which one end of the first die nozzle 2 is provided, may be provided with a plurality of first connecting holes 12, and the cover plate 4 may be provided with a plurality of second connecting holes 43, where the plurality of first connecting holes 12 and the plurality of second connecting holes 43 are arranged in a one-to-one correspondence manner, in this embodiment, the first connecting holes 12 and the second connecting holes 43 are threaded holes, and the connecting piece may be a bolt, so that the connecting piece may be inserted into the first connecting holes 12 and the second connecting holes 43, so that the cover plate 4 is fixed on the die holder 1.
Preferably, four first connecting holes 12 can be formed in the end face of the die holder 1, the four first connecting holes 12 can be uniformly distributed along the circumferential direction, four second connecting holes 43 are also formed in the cover plate 4, the four second connecting holes 43 and the four first connecting holes 12 are in one-to-one correspondence, four connecting pieces can be respectively inserted into the four first connecting holes 12 and the four second connecting holes 43, the four connecting pieces can be screwed down to enable the cover plate 4 to be mounted on the die holder 1, and the plane where the cover plate 4 is located can be better adjusted by screwing the four connecting pieces.
As shown in fig. 2, in some embodiments, the first through hole 11, the second through hole 21, the third through hole 31, and the fourth through hole 42 are coaxially disposed.
Specifically, the die holder 1, the first die tip 2, the second die tip 3 and the cover plate 4 are assembled as one body with the same axis, and the first through hole 11, the second through hole 21, the third through hole 31 and the fourth through hole 42 are coaxially arranged, so that the plastic can be extruded from the extrusion passage better.
As shown in fig. 1, in some embodiments, the thickness of the second die 3 is greater than the groove depth of the mounting groove 41.
Specifically, the thickness of the second die 3 may be greater than the groove depth of the mounting groove 41, and more clearly, when the second die 3 is placed in the mounting groove 41, the second die 3 partially protrudes from the mounting groove 41, and when the cover plate 4 is mounted on the die holder 1, the second die 3 is pressed, so that the first die 2 and the second die 3 are closely connected together.
In some embodiments, as shown in fig. 2, the fourth through hole 42 has a diameter greater than the diameter of the third through hole 31.
Specifically, the diameter of the fourth through hole 42 may be larger than that of the third through hole 31, and the extrusion of plastic from the second die 3 may be facilitated.
When the combined extrusion molding die sleeve provided by the utility model is used, the die holder 1, the first die nozzle 2, the second die nozzle 3 and the cover plate 4 can be sequentially connected together, namely, the first die nozzle 2 is arranged in the first through hole 11 of the die holder 1, the second die holder 1 is arranged in the mounting groove 41 of the cover plate 4, and then the cover plate 4 is fixed at one end of the die holder 1, so that the first die nozzle 2 and the second die nozzle 3 are combined together, and finally, the die holder 1 is arranged on the machine head of an extrusion molding machine, so that heated and melted high-temperature plastic can be extruded from an extrusion molding channel.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420205167.0U CN222271211U (en) | 2024-01-29 | 2024-01-29 | Combined extrusion mold sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420205167.0U CN222271211U (en) | 2024-01-29 | 2024-01-29 | Combined extrusion mold sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222271211U true CN222271211U (en) | 2024-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420205167.0U Active CN222271211U (en) | 2024-01-29 | 2024-01-29 | Combined extrusion mold sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222271211U (en) |
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- 2024-01-29 CN CN202420205167.0U patent/CN222271211U/en active Active
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