Flat sheath wire core wire positioning jig
By installing positioning fixtures at the end of the inner mold pipe, the problem of easy dislocation and crossing of the core wire during the extrusion process is solved, the uniform and stable forming of the core wire and the prevention of corrugation of the sheath layer is achieved, and the product molding quality is improved.
Patent Information
- Application Number
- CN202421644649.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-12
AI Technical Summary
During the extrusion process, due to the tension of the laying directions, the core wires of the flat wire are prone to be dislocation and crossing, resulting in the internal mold hole being blocked or the appearance of the sheath layer being large, affecting the molding quality.
A flat sheathed wire core wire positioning fixture is designed, including an inner mold pipe and a positioning fixture embedded at the end of the inner mold pipe. The inner mold pipe is detachably connected to the positioning fixture. The inner mold pipe is equipped with a through hole passing through parallel to the core line. The positioning fixture runs through the positioning hole passing through the core line along the axial direction of the inner mold pipe, and the positioning holes are arranged equidistantly along the radial direction of the inner mold pipe.
Positioning the distance of the core wires through positioning fixtures to avoid twisting or crossing during the extrusion process, ensure that the core wires are formed evenly and smoothly, prevent corrugations of the sheath layer and improve product molding quality.
Smart Images
Figure CN222921014U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of positioning jigs, and particularly to a positioning jig for the core wires of a flat sheath wire. Background Art
[0002] At present, a flat wire is formed by arranging two or more groups of core wires side by side. When extruding a sheath layer on the outer periphery of the flat wire through an extruder, due to the influence of wire release tensions in different directions, the core wires of two or more groups are prone to misalignment and crossing after entering the inner die tube, which may cause blockage at the inner die hole and lead to wire breakage, or the appearance of large corrugations on the wire sheath layer due to the shaking of the semi-finished product, affecting the forming quality of the wire product. Summary of the Utility Model
[0003] In order to solve the above technical problems, this application provides a positioning jig for the core wires of a flat sheath wire, including an inner die tube and a positioning jig installed at the end of the inner die tube. The inner die tube is detachably connected to the positioning jig. The inner die tube is provided with through holes for several core wires to pass through in parallel. The positioning jig is axially penetrated with several positioning holes for a single core wire to pass through, and the several positioning holes are equidistantly arranged along the radial direction of the inner die tube.
[0004] Preferably, an installation hole is opened at one end of the outer peripheral surface of the inner die tube close to the positioning jig, and a locking member for fixing the inner die tube is inserted through the installation hole.
[0005] Preferably, a limiting boss is formed at one end of the positioning jig away from the inner die tube, and the limiting boss abuts against the end face of the inner die tube.
[0006] Preferably, the outer diameter of the positioning jig is 0.2 - 0.4 mm smaller than the inner diameter of the through hole.
[0007] Preferably, the outer diameter of the limiting boss is 4 - 10 mm larger than the inner diameter of the through hole.
[0008] Preferably, the length of the positioning jig is 15 - 30 mm, and the thickness of the limiting boss is 2 - 5 mm.
[0009] As can be seen from the above, applying the present application can achieve the following beneficial effects: By installing a positioning fixture at the end of the inner die tube, the inner die tube is detachably connected to the positioning fixture. The inner die tube is provided with through holes for several core wires to pass through in parallel. The positioning fixture is axially penetrated with several positioning holes for a single core wire to pass through, and the several positioning holes are equidistantly arranged along the radial direction of the inner die tube. The inner die tube is installed in the extrusion head. Then, several core wires are first divided by passing through the positioning holes of the positioning fixture, and then pass through the through holes of the inner die tube. Then, an insulating sheath is extruded on the outer periphery of the multiple core wires through the extrusion head. By positioning the distance between the multiple core wires with the positioning fixture, the phenomenon that the multiple core wires are twisted or crossed during the extrusion process is avoided, ensuring that the core wires pass through the inner and outer dies of the extrusion head evenly, stably and without jitter for forming, preventing the appearance of corrugations in the wire sheath layer, and improving the product forming quality. Description of the Drawings
[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments of the present application or the prior art. Obviously, the drawings in the following description are only a part of the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0011] Figure 1 Schematic diagram of the core wire positioning structure of the flat sheath wire in the embodiment of the present application;
[0012] Figure 2 Schematic diagram of the positioning fixture structure in the embodiment of the present application. Detailed Embodiments
[0013] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.
[0014] Embodiment
[0015] To solve the above technical problems, this embodiment provides a positioning fixture for the core wires of flat sheath wires, as Figure 1-2As shown in the figure, it includes an inner die tube 10 and a positioning fixture 20 installed at the end of the inner die tube 10. The inner die tube 10 is detachably connected to the positioning fixture 20. The inner die tube 10 is provided with through holes 11 for several core wires to pass through in parallel. The positioning fixture 20 is axially penetrated with several positioning holes 30 for a single core wire to pass through along the inner die tube 10. The several positioning holes 30 are equidistantly arranged along the radial direction of the inner die tube 10. The inner die tube 10 is installed in the extrusion head. Then, several core wires are first separated through the positioning holes 30 of the positioning fixture 20, and then pass through the through holes 11 of the inner die tube 10. Then, an insulating sheath is extruded on the outer periphery of the multiple core wires through the extrusion head. The distance between the multiple core wires is positioned by the positioning fixture 20, avoiding the phenomenon that the multiple core wires are twisted or crossed during the extrusion process, ensuring that the core wires pass through the inner and outer dies of the extrusion head evenly, stably and without jitter for shaping, preventing the appearance of corrugations in the wire sheath layer, and improving the product shaping quality.
[0016] Specifically, in order to realize the detachable connection between the inner die tube 10 and the positioning fixture 20, an installation hole 12 is opened at one end of the outer peripheral surface of the inner die tube 10 close to the positioning fixture 20. A locking member for fixing the inner die tube 10 is inserted through the installation hole 12. The installation hole 12 is threadedly connected to the locking member. By pressing the locking member against the positioning fixture 20, or the locking member is threadedly connected to the positioning fixture 20, the inner die tube 10 is detachably connected to the positioning fixture 20. Among them, the several positioning holes 30 are equidistantly arranged along the radial direction of the inner die tube 10. In actual production, the positioning fixture 20 with specific different sizes of positioning holes 30 can be replaced according to the size of the core wire, so as to achieve the purpose of compatibility.
[0017] Furthermore, a limiting boss 21 is formed at one end of the positioning fixture 20 away from the inner die tube 10. The limiting boss 21 abuts against the end face of the inner die tube 10. The positioning fixture 20 is embedded in the through hole 11 of the inner die tube 10, and the limiting boss 21 abuts against the end face of the inner die tube 10, so as to achieve the purpose of limiting and make the positioning fixture 20 accurately installed in the inner die tube 10.
[0018] Furthermore, the outer diameter of the positioning fixture 20 is 0.2 - 0.4 mm smaller than the inner diameter of the through hole 11, and the outer diameter of the limiting boss 21 is 4 - 10 mm larger than the inner diameter of the through hole 11. The length of the positioning fixture 20 is 15 - 30 mm, and the thickness of the limiting boss 21 is 2 - 5 mm. The positioning fixture 20 with the above structure ensures the positioning of the distance between multiple core wires, avoids the phenomenon that the multiple core wires are twisted or crossed during the extrusion process, prevents the appearance of corrugations in the wire sheath layer, and improves the product shaping quality.
[0019] In summary, in the solution of the present application, a positioning fixture is installed and fitted at the end of the inner die tube. The inner die tube is detachably connected to the positioning fixture. The inner die tube is provided with through holes for several core wires to pass through in parallel. The positioning fixture is axially penetrated with several positioning holes for a single core wire to pass through, and the several positioning holes are equidistantly arranged along the radial direction of the inner die tube. The inner die tube is installed in the extrusion head. Then, several core wires are first separated by passing through the positioning holes of the positioning fixture, and then pass through the through holes of the inner die tube. Then, an insulating sheath is extruded on the outer periphery of the multiple core wires through the extrusion head. By positioning the distance between the multiple core wires with the positioning fixture, the phenomenon that the multiple core wires are twisted or crossed during the extrusion process is avoided, ensuring that the core wires pass through the inner and outer dies of the extrusion head evenly, stably and without jitter for shaping, preventing the appearance of corrugations in the wire sheath layer, and improving the product shaping quality.
[0020] The above-described embodiments do not constitute a limitation on the protection scope of the technical solution. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the above embodiments shall be included in the protection scope of the technical solution.
Claims
1. A flat sheath wire core positioning fixture, characterized in that: The invention comprises an inner mold tube (10) and a positioning fixture (20) mounted at the end of the inner mold tube (10); the inner mold tube (10) and the positioning fixture (20) are detachably connected; the inner mold tube (10) is provided with a through hole (11) for a plurality of core wires to pass through in parallel; the positioning fixture (20) is provided with a plurality of positioning holes (30) penetrating the axial direction of the inner mold tube (10) for a single core wire to pass through; the plurality of positioning holes (30) are equidistantly arranged along the radial direction of the inner mold tube (10).
2. The flat sheathed wire core positioning fixture according to claim 1, characterized in that: An installation hole (12) is provided on the outer circumferential surface of the inner mold tube (10) at one end close to the positioning fixture (20), and a locking piece for fixing the inner mold tube (10) is passed through the installation hole (12).
3. The flat sheathed wire core positioning fixture according to claim 1, characterized in that: A limiting boss (21) is formed at one end of the positioning fixture (20) away from the inner mold tube (10), and the limiting boss (21) abuts against the end surface of the inner mold tube (10).
4. The flat sheathed wire core positioning fixture according to claim 1, characterized in that: The outer diameter of the positioning fixture (20) is 0.2-0.4 mm smaller than the inner diameter of the through hole (11).
5. The flat sheathed wire core positioning fixture according to claim 3, characterized in that: The outer diameter of the limiting boss (21) is 4-10 mm larger than the inner diameter of the through hole (11).
6. The flat sheathed wire core positioning fixture according to claim 3, characterized in that: The length of the positioning fixture (20) is 15-30 mm, and the thickness of the limiting boss (21) is 2-5 mm.