Cable extrusion integrated die
Technical Field
The utility model relates to the technical field of cable sheath processing, in particular to a cable extrusion integrated die.
Background
The cable extrusion die is a die which is butted with an extruder and used for producing cables or optical cable jackets, the traditional die is generally divided into a die core and a die sleeve, the die core can guide and position core wires or optical fibers of the cables, the die sleeve is matched with the die core to form a closed flow channel, molten materials pass through the die under the action of high pressure, and finally, the molten materials are cooled and solidified to form the cable jackets with required thickness specifications. In the use process, extremely high concentricity between die sleeve cores needs to be ensured, so that the die sleeve needs to be adjusted repeatedly.
The existing integrated mould for manufacturing the cable is produced by integrating the die sleeve and the die core, so that concentricity of the die sleeve and the die core is guaranteed, but when the integrated mould is used, the integrated mould corresponding to the die sleeve is required to be customized when the integrated mould is used for manufacturing optical cable jackets with different specifications and thicknesses, so that cost is increased when the mould is designed and manufactured and concentricity is debugged, and the molding part inside the integrated mould is difficult to clean, so that dirt accumulation influences the quality of jacket finished products.
Disclosure of utility model
In order to solve the problems in the prior art, the utility model provides a cable extruding integrated die.
The cable extrusion integrated die comprises a die core and a die sleeve, wherein the die core comprises a conical part and a flat part which are inserted into the die sleeve, and a central hole for a cable core to pass through is formed in the center of the die core.
Through adopting above-mentioned technical scheme, through dividing into main part and regulation portion with the die sleeve, the mold core is connected with the main part an organic whole in the die sleeve, has ensured concentricity and the stability between mold core and the die sleeve in the extrusion process to improve cable sheath's shaping precision and product quality. The adjusting part with different specifications can be quickly replaced according to production requirements so as to change the size of the plastic cavity, adapt to the production requirements of cable jackets with different thicknesses, improve the universality of the die, and can be detached to conveniently clean the inner plastic cavity and the runner.
Further, the main body part comprises a first conical hole, the adjusting part comprises a second conical hole and a cylindrical hole which are in butt joint with the first conical hole, a conical flow passage for feeding is formed among the first conical hole, the second conical hole and the conical part, and a molding cavity is formed among the cylindrical hole and the flattening part.
By adopting the technical scheme, the replaceable adjusting part is designed, the size ratio of the second conical hole to the cylindrical hole is different, and the size of the plastic cavity can be adjusted by the quick different adjusting parts according to different production requirements so as to adapt to the production of cable sheaths with different specifications.
Further, the inner wall of the main body part is provided with an internal thread, the part of the adjusting part extending into the main body part is provided with an external thread, and the external thread is matched with the internal thread.
Further, anti-skid patterns are arranged on the outer wall of the adjusting part.
Through adopting above-mentioned technical scheme for adjusting part can realize the convenient dismouting with main part through screw-thread fit, and can ensure the firm connection between adjusting part and the main part. The anti-skid patterns are additionally arranged on the outer wall of the adjusting part, so that the adjusting part can be manually screwed and rotated to be convenient for assembling and disassembling, and the efficiency is improved.
Further, the axial lines of the first conical hole, the second conical hole and the cylindrical hole are all concentric with the axial line of the central hole.
By adopting the technical scheme, uneven material distribution caused by eccentricity is avoided, and the product quality is effectively improved.
Furthermore, one side of the conical runner, which is far away from the molding cavity, is provided with a plurality of feeding flaring evenly distributed around the central shaft.
By adopting the technical scheme, the molten material can uniformly enter the die from multiple directions, and the uneven thickness of the sheath caused by material accumulation or uneven flow is avoided.
In summary, the die sleeve has the beneficial effects that the die sleeve is divided into the main body part integrally formed with the die core and the detachable and replaceable adjusting part, so that the high concentricity of the die core and the die sleeve is ensured, and meanwhile, the adjusting part can be quickly adjusted according to the thickness requirements of manufacturing different cable jackets, thereby improving the universality of the die and reducing the production cost. And because the adjusting part can be detached, the molding cavity and the runner inside the cleaning die are more convenient.
The foregoing description is only an overview of the technical solution of the present utility model, and may be implemented according to the content of the specification in order to make the technical means of the present utility model more clearly understood, and in order to make the above and other objects, features and advantages of the present utility model more clearly understood, the following specific preferred embodiment is given by way of the following detailed description in conjunction with the accompanying drawings.
Drawings
FIG. 1 is a schematic cross-sectional view of the present embodiment;
FIG. 2 is a comparative cross-sectional view of a different gauge adjustment portion of the present embodiment;
FIG. 3 is an overall schematic diagram of the present embodiment;
Fig. 4 is an exploded partial enlarged schematic view of the present embodiment.
In the figure, 1, a mold core, 11, a conical part, 12, a flat part, 13, a central hole, 2, a mold sleeve, 21, a main body part, 211, a first conical hole, 22, an adjusting part, 221, a second conical hole, 222, a cylindrical hole, 3, a conical runner, 4, a molding cavity, 5, external threads, 6, internal threads, 7, anti-skid threads, 8 and a feeding flaring.
Detailed Description
In order that the utility model may be more readily understood, a further description of the utility model will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
It should be noted that, as used herein, the terms "center," "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Unless otherwise indicated, the meaning of "a plurality" is two or more.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, or indirectly connected via an intervening medium, or may be in communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.
As shown in fig. 1 to 3, an integrated die for extruding a cable is butt-jointed to an extruder, and comprises a die core 1 and a die sleeve 2, wherein the die core 1 comprises a conical part 11 and a flat part 12 which are inserted into the die sleeve 2, and a central hole 13 for the cable core to pass through is arranged in the center of the die core 1, and the die sleeve 2 of the embodiment comprises a main body part 21 integrally connected with the die core 1 and an adjusting part 22 detachably connected with the main body part 21 for changing the thickness of a sheath in a replaceable way.
In the embodiment, the die sleeve 2 is divided into the main body 21 and the adjusting part 22, wherein the die core 1 is integrally connected with the main body 21 in the die sleeve 2, so that concentricity and stability between the die core 1 and the die sleeve 2 in the extrusion process are ensured, and the molding precision and product quality of the cable sheath are improved. The adjusting part 22 with different specifications can be quickly replaced according to production requirements so as to change the size of the plastic cavity 4, adapt to the production requirements of cable jackets with different thicknesses and improve the universality of the die, and the adjusting part 22 can be detached conveniently and quickly by an operator, so that the adjusting part 22 can be detached conveniently and quickly to clean the plastic cavity 4 and the runner inside the die, and adverse effects on the appearance of the jackets due to accumulated impurities and residues produced for a long time are avoided.
As shown in fig. 1 and 2, the main body 21 of the present embodiment includes a first tapered hole 211, and the adjusting portion 22 includes a second tapered hole 221 and a cylindrical hole 222 abutting against the first tapered hole 211, wherein a tapered flow channel 3 for feeding is formed between the first tapered hole 211, the second tapered hole 221 and the tapered portion 11, and a molding cavity 4 is formed between the cylindrical hole 222 and the flat portion 12. By designing the replaceable adjusting part 22, the size ratio of the second conical hole 221 to the cylindrical hole 222 is different, and different adjusting parts 22 can be quickly replaced according to different production requirements to adjust the size of the plastic cavity 4 so as to adapt to the production of cable sheaths with different specifications and thicknesses.
As shown in fig. 4, the inner wall of the main body 21 of the present embodiment is provided with an internal thread 5, and the portion of the two adjusting portions 22 extending into the main body 21 is provided with an external thread 6, and the external thread 5 is matched with the internal thread 6. The internal thread 5 on the inner wall of the main body part 21 is matched with the external thread 6 on the inner part of the adjusting part 22, so that the adjusting part 22 can be conveniently and quickly assembled and disassembled with the main body part 21 through threaded fit, and the stable connection between the adjusting part 22 and the main body part 21 can be ensured, so that the die has high concentricity and stability under the working state. Further, the outer wall of the adjusting portion 22 is provided with anti-skid patterns 7. The anti-skid patterns 7 are additionally arranged on the outer wall of the adjusting part 22, so that the adjusting part 22 can be manually screwed and rotated to be conveniently assembled and disassembled, and the assembling and disassembling efficiency is improved.
As shown in fig. 1, the axial lines of the first tapered hole 211, the second tapered hole 221 and the cylindrical hole 222 in this embodiment are all concentric with the axial line of the central hole 13. Through keeping the axial line of first bell mouth 211, second bell mouth 221 and cylindricality hole 222 and the axial line of mold core 1 centre bore 13 concentric setting, ensure that the molten material flows along same axis in feeding, compression and shaping in-process, effectively guarantee the precision and the uniformity that the cable sheath extruded, avoid the material maldistribution that leads to because of the decentration, effectively improved product quality.
As shown in fig. 3, a plurality of feeding flares 8 uniformly distributed around a central axis are provided on the side of the conical runner 3 far from the molding cavity 4 in this embodiment. Through setting up a plurality of feeding flares 8 around center pin evenly distributed in the toper runner 3 side of keeping away from moulding chamber 4, can make the molten material get into the mould inside from a plurality of directions evenly, effectively avoid material to pile up or flow uneven to lead to sheath thickness uneven.
In summary, the beneficial effects of this embodiment are that, in this embodiment, the die sleeve 2 is divided into the main body 21 and the adjusting portion 22, the die core 1 and the main body 21 are integrally connected to ensure concentricity and stability in the extrusion process, and the exchangeable adjusting portion 22 is designed to quickly adjust the size of the molding cavity 4 according to the production requirement to determine the thickness of the sheath, so that the versatility of the die is significantly improved. The external thread 5 on the inner wall of the main body part 21 is matched with the internal thread 6 of the adjusting part 22, so that the adjusting part 22 can be conveniently dismounted through threads, and the stability of the die is ensured.
The above examples are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and modifications made by those skilled in the art based on the present utility model are included in the scope of the present utility model.