CN216914773U - Three-layer co-extrusion die for cable production - Google Patents
Three-layer co-extrusion die for cable production Download PDFInfo
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- CN216914773U CN216914773U CN202220455043.9U CN202220455043U CN216914773U CN 216914773 U CN216914773 U CN 216914773U CN 202220455043 U CN202220455043 U CN 202220455043U CN 216914773 U CN216914773 U CN 216914773U
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Abstract
The utility model discloses a three-layer co-extrusion die for cable production, which structurally comprises a die core and a die sleeve and is characterized in that the die core is conical, the die sleeve is sleeved at the conical tip of the die core, a core guide channel is arranged in the die core, the core guide channel penetrates through the die core and the die sleeve along the axis of the die core, a wire bearing area is arranged at the joint of the die sleeve and the die core, a large die core is also arranged between the die core and the die sleeve, and one end of the large die core obliquely extends to the wire bearing area. The feeding pipeline formed between the mold core and the mold core is directly extended to the wire bearing area by lengthening the mold core, so that the insulating materials of different levels are prevented from contacting in advance, and the insulating layers wrapped outside the cable are separated from each other and are well-arranged.
Description
Technical Field
The utility model belongs to the technical field of glue injection molds, and particularly relates to a three-layer co-extrusion mold for cable production.
Background
The insulating layer refers to an insulating material layer between the heating wires or between the heating wires and the grounding shielding layer. The isolating wire is mainly used for isolating wires to prevent people from being injured by electric shock. The wire and cable is a product which people rely on more and more in the present, mainly used for transmitting the power, the use of mobile phone, computer is generally required to support of the power, the resistance to tearing of different occasions of the wire, temperature resistant degree are all different, the high-quality insulating layer needs to have good physical and mechanical properties, such as tensile, bending resistance, vibration resistance, torsion resistance, etc., in order to adapt to these different service environments; the wire can be normally and reliably operated and used under the protection of the insulating layer no matter how severe the environment is.
Under different use requirements, a cable can be attached with a plurality of layers of insulating layers, but due to the fact that a feeding pipeline in a die is too short, insulating materials forming different levels contact and fuse in the feeding pipeline in advance, and two adjacent insulating layers are adhered together and cannot be peeled in a layering mode.
SUMMERY OF THE UTILITY MODEL
According to the utility model, the feeding pipeline formed between the mold core and the mold core is directly extended to the wire bearing area by lengthening the mold core, so that the insulation materials of different levels are prevented from contacting in advance, and the insulation layers wrapped outside the cable are separated from each other and are well-arranged.
The utility model provides a cable production is with three-layer mould altogether, includes mold core and die sleeve, its characterized in that, the mold core is the taper shape, the die sleeve cover is established in the awl point department of mold core, be provided with in the mold core and lead the core passageway, lead the core passageway and run through mold core and die sleeve along the axis of mold core, the handing-over department of die sleeve and mold core is provided with the hold line district, still be provided with big mold core between mold core and the die sleeve, the one end slope of big mold core extends to the hold line district.
Preferably, the large mold core is sleeved outside the mold core, a middle feeding channel is formed in a gap between the large mold core and the mold core, and one end of the middle feeding channel is converged into the core guiding channel in the wire bearing area.
Preferably, the mold core comprises an inner mold core and an outer mold core, the outer mold core is sleeved on the inner mold core, the outer mold core is sleeved with a large mold core, and one end of the outer mold core obliquely extends to the wire bearing area.
Preferably, the gap between the outer mold core and the inner mold core forms an inner feeding channel, and one end of the inner feeding channel is converged into the core guide channel in the wire bearing area.
Preferably, the core guide channel is arranged at the axis of the inner mold core, and the circular diameter of the channel of the core guide channel is gradually reduced towards the direction of the mold sleeve until the diameter is the same as the circular diameter of the core guide.
Preferably, the die sleeve is sleeved outside the large die core, an outer feeding channel is formed by a gap between the die sleeve and the extension part of the large die core, and one end of the outer feeding channel is converged into the core guiding channel in the wire bearing area.
Preferably, the die sleeve is provided with a discharge port penetrated by the core guide channel, and the discharge port is positioned in the wire bearing area.
Preferably, the mold core and the large mold core are provided with threads connected with the glue extruding machine head at one ends far away from the mold sleeve.
The utility model has the advantages that:
the extended part of one end of the large mold core obliquely extends to the wire bearing area and just forms a section of middle feeding channel gradually closing up to the wire bearing area with the outer surface of the outer mold core, so that the discharging amount of a channel opening can be accurately controlled. And simultaneously, the extension part of the large mold core and the mold sleeve form an outer feeding channel, and one end of the inner feeding channel, one end of the middle feeding channel and one end of the outer feeding channel, which are communicated with the wire bearing area, are sequentially arranged in the front-back direction, so that the insulating materials corresponding to the three feeding channels are attached to the guide core in a layered manner. The insulating materials in the feeding channel are still heated, active molecular motion of the insulating materials in different levels after the insulating materials are contacted in advance at a higher temperature accelerates the fusion of the materials, but the feeding channel directly transports the insulating materials to the wire bearing area, so that the insulating materials in different levels are prevented from being fused together before contacting the guide core, different insulating layers of the cable can be mutually stripped, and the cable is convenient to carry out various operations in actual use.
The circular diameter of the channel in the core guide channel is gradually reduced towards the direction of the wire bearing area, so that the circular diameter close to one end of the wire bearing area is just as large as the core guide, the core guide in the process of advancing can be straightened and straightened by the core guide channel, the subsequent adhesive attachment is more accurate and smooth, and meanwhile, the pollution caused by the fact that the insulating material reversely enters the core guide channel is prevented.
Each feeding channel is formed by sleeving two mold cores and is not an integrated groove or pipeline, and the channel can be cleaned very conveniently and completely after machining is finished. The mold cores are not mutually contacted and are fixed on the head of the glue injection machine through threads far away from one end of the mold sleeve.
Drawings
Fig. 1 is a schematic sectional structure of the present invention.
In the figure, a mold core 1, a mold sleeve 2, a core guide channel 3, a large mold core 4, an inner mold core 5, an outer mold core 6, a middle feeding channel 7, an inner feeding channel 8, an outer feeding channel 9, a discharge hole 10, threads 11 and a wire bearing area 12.
Detailed Description
As shown in figure 1, a three-layer co-extrusion die for cable production comprises a die core and a die sleeve, and is characterized in that the die core 1 is conical, the taper point of the die core 1 is sleeved with the die sleeve 2, a core guide channel 3 is arranged in the die core 1, the core guide channel 3 runs through the die core 1 and the die sleeve 2 along the axis of the die core 1, a wire bearing area 12 is arranged at the joint of the die sleeve 2 and the die core 1, a large die core 4 is further arranged between the die core 1 and the die sleeve 2, and one end of the large die core 4 extends to the wire bearing area 12 in an inclined manner.
In this embodiment, the large mold core 4 is sleeved outside the mold core 1, a gap between the large mold core 4 and the mold core 1 forms a middle feeding channel 7, and one end of the middle feeding channel 7 is converged into the core guiding channel 3 in the wire bearing area 12.
In this embodiment, the mold core 1 includes an inner mold core 5 and an outer mold core 6, the outer mold core 6 is sleeved on the inner mold core 5, the outer mold core 6 is sleeved with a large mold core 4, and one end of the outer mold core 6 extends to the wire bearing area 12 in an inclined manner.
In the present exemplary embodiment, the gap between the outer core 6 and the inner core 5 forms an inner feed channel 8, one end of the inner feed channel 8 merging into the core guide channel 3 in the bearing zone 12.
In the present embodiment, the core guide channel 3 is disposed at the axis of the inner mold core 5, and the channel circular diameter of the core guide channel 3 gradually decreases toward the mold sleeve 2 until the same diameter as the core guide circular diameter.
In this embodiment, the die sleeve 2 is sleeved outside the large die core 4, an outer feeding channel 9 is formed by a gap between the die sleeve 2 and an extension part of the large die core 4, and one end of the outer feeding channel 9 is converged into the core guiding channel 3 in the wire bearing area 12.
In this embodiment, the die sleeve 2 is provided with a discharge port 10 penetrated by the core guiding channel 3, and the discharge port 10 is located in the thread bearing area 12.
In the embodiment, the ends of the mold core 1 and the large mold core 4 far away from the mold sleeve 2 are provided with threads 11 connected with the glue extruding machine head.
The extended part of one end of the large mold core 4 obliquely extends to the position of the wire bearing area 12 and just forms a section of middle feeding channel 7 gradually closing in towards the wire bearing area 12 with the outer surface of the outer mold core 6, so that the discharging amount of a channel opening can be accurately controlled. Meanwhile, the extension part of the large mold core 4 and the mold sleeve 2 form an outer feeding channel 9, and one end of the inner feeding channel, the middle feeding channel and the outer feeding channel, which are communicated with the wire bearing area 12, are arranged in a front-back sequence, so that the insulating materials corresponding to the three feeding channels are attached to the guide core in a layered manner. The insulating materials in the feeding channel are still heated, active molecular motion of the insulating materials in different levels after the insulating materials are contacted in advance at a higher temperature accelerates the fusion of the materials, but the feeding channel directly transports the insulating materials to the wire bearing area 12, so that the insulating materials in different levels are prevented from being fused together before contacting the guide core, different insulating layers of the cable can be stripped mutually, and the cable is convenient to carry out various operations in actual use.
The diameter of the channel circle in the core guide channel 3 is gradually reduced towards the direction of the wire bearing area 12, so that the diameter of the circle close to one end of the wire bearing area is just the same as the size of the core guide, the core guide in the process of advancing can be straightened and straightened by the core guide channel 3, the subsequent adhesive attaching is more accurate and smooth, and meanwhile, the pollution caused by the fact that the insulating material reversely enters the core guide channel 3 is also prevented.
Each feeding channel is formed by sleeving two mold cores and is not an integrated groove or pipeline, and the channels can be cleaned very conveniently and completely after the feeding channels are machined. The mold cores are not contacted with each other and are fixed on the head of the glue injection machine through threads 11 at one end far away from the mold sleeve 2.
Embodiment mode 1
Each feed channel is connected to a heating plate in the machine head, through which the insulating material is heated. The material in the outer feed channel 9 was heated and maintained at 130 c, the material in the middle feed channel 7 at 120 c and the material in the inner feed channel 8 at 200 c, due to the higher temperature required for the material in the inner feed channel 8, and the additional heating through a set of return pipes. Then the core is put into the core channel 3, the insulating material is extruded out from the inner, middle and outer to the wire bearing area 12 by the pressure device, the three layers of insulating materials are moved outwards along with the core, and the three layers of insulating materials are different in solidification rate due to the difference of temperature, so that the three layers of insulating materials are orderly wrapped outside the core. And finally, conveying the guide core coated with the insulating material into a vulcanizing tube for vulcanization molding.
Embodiment mode 2
Each feed channel is connected to a heating plate in the machine head, through which the insulating material is heated. The material in the outer feed channel 9 is heated and maintained at 140 c, the material in the middle feed channel 7 is heated and maintained at 130 c, and the material in the inner feed channel 8 is maintained at 210 c, since the material in the inner feed channel 8 requires a higher temperature, and is additionally heated by a set of return pipes. Then the core is put into the core channel 3, the insulating material is extruded out from the inner, middle and outer to the wire bearing area 12 by the pressure device, the three layers of insulating materials are moved outwards along with the core, and the three layers of insulating materials are different in solidification rate due to the difference of temperature, so that the three layers of insulating materials are orderly wrapped outside the core. And finally, conveying the guide core coated with the insulating material into a vulcanizing tube for vulcanization molding.
Each feed channel is connected to a heating plate in the machine head, through which the insulating material is heated. The material in the outer feed channel 9 was heated and maintained at 150 c, the material in the middle feed channel 7 at 140 c and the material in the inner feed channel 8 at 220 c, due to the higher temperature required for the material in the inner feed channel 8, and the additional heating via a set of return pipes. Then the core is put into the core channel 3, the insulating material is extruded out from the inner, middle and outer to the wire bearing area 12 by the pressure device, the three layers of insulating materials are moved outwards along with the core, and the three layers of insulating materials are different in solidification rate due to the difference of temperature, so that the three layers of insulating materials are orderly wrapped outside the core. And finally, conveying the guide core coated with the insulating material into a vulcanizing tube for vulcanization molding.
Because the effect that each insulating layer can peel off each other needs to reach, consequently three independent feedstock channels can the too fast heat energy exchange of insulating material between the different feedstock channels of certain degree of separation. It can be seen from the above embodiments that the temperatures of the three feeding channels are gradually reduced from inside to outside, and the feeding channels are formed by the inner and outer surfaces of the two adjacent mold cores, so that the excess heat of the inner channels can be conducted in a controlled manner through the mold cores, and the working pressure of the heating plate is reduced.
Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the utility model as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a cable production is with three-layer mould altogether, includes mold core and die sleeve, its characterized in that, mold core (1) is conical, the awl point department at mold core (1) is established in die sleeve (2) cover, be provided with in mold core (1) and lead core passageway (3), lead core passageway (3) and run through mold core (1) and die sleeve (2) along the axis of mold core (1), handing-over department of die sleeve (2) and mold core (1) is provided with supporting wire district (12), still be provided with between mold core (1) and die sleeve (2) giant mold core (4), the one end slope of giant mold core (4) extends to supporting wire district (12).
2. The three-layer co-extrusion die for cable production according to claim 1, wherein: the large mold core (4) is sleeved outside the mold core (1), a middle feeding channel (7) is formed in a gap between the large mold core (4) and the mold core (1), and one end of the middle feeding channel (7) is converged into the guide core channel (3) in the wire bearing area (12).
3. The three-layer co-extrusion die for cable production according to claim 1, wherein: the mold core (1) comprises an inner mold core (5) and an outer mold core (6), the outer mold core (6) is sleeved on the inner mold core (5), the outer mold core (6) is sleeved with a large mold core (4), and one end of the outer mold core (6) obliquely extends to a wire bearing area (12).
4. The three-layer co-extrusion die for cable production according to claim 3, wherein: the clearance between the outer mold core (6) and the inner mold core (5) forms an inner feeding channel (8), and one end of the inner feeding channel (8) is converged into the core guiding channel (3) in the wire bearing area (12).
5. The three-layer co-extrusion die for cable production according to claim 3, wherein: the core guide channel (3) is arranged at the axis of the inner mold core (5), and the channel circular diameter of the core guide channel (3) is gradually reduced towards the mold sleeve (2) until the diameter is the same as the diameter of the core guide circular diameter.
6. The three-layer co-extrusion die for cable production according to claim 1, wherein: the die sleeve (2) is sleeved outside the large die core (4), an outer feeding channel (9) is formed in a gap between the die sleeve (2) and the extending part of the large die core (4), and one end of the outer feeding channel (9) is converged into the core guiding channel (3) in the wire bearing area (12).
7. The three-layer co-extrusion die for cable production according to claim 1, wherein: the die sleeve (2) is provided with a discharge hole (10) penetrated by the core guide channel (3), and the discharge hole (10) is positioned in the wire bearing area (12).
8. The three-layer co-extrusion die for cable production according to claim 1, wherein: and threads (11) connected with the glue extruding machine head are arranged at one ends of the mold core (1) and the large mold core (4) far away from the mold sleeve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220455043.9U CN216914773U (en) | 2022-03-03 | 2022-03-03 | Three-layer co-extrusion die for cable production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220455043.9U CN216914773U (en) | 2022-03-03 | 2022-03-03 | Three-layer co-extrusion die for cable production |
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| Publication Number | Publication Date |
|---|---|
| CN216914773U true CN216914773U (en) | 2022-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220455043.9U Active CN216914773U (en) | 2022-03-03 | 2022-03-03 | Three-layer co-extrusion die for cable production |
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| Country | Link |
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| CN (1) | CN216914773U (en) |
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- 2022-03-03 CN CN202220455043.9U patent/CN216914773U/en active Active
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