Cable convex rib colored tape sheath preparation mold and preparation method
By adding a rib extrusion head and rib groove to the cable sheath extruder, combined with a vacuum and gradient cooling device, the problems of difficult cable sheath differentiation and marking are solved, achieving efficient and stable cable differentiation and identification, reducing costs and improving the forming quality of the ribs.
Patent Information
- Application Number
- CN202511068811.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-31
- Publication Date
- 2025-11-04
AI Technical Summary
The existing cable sheaths are difficult and costly to distinguish between new and old cables, and the markings are not easy to identify. In addition, there is a problem of color bleeding, which affects the bonding strength of the cable sheath and the stability of identification.
A mold for preparing cable ribbed sheath is used. By adding a ribbed extrusion head to the sheath extruder, ribs are formed on the outside of the sheath as markings. By combining the sheath extruder and the ribbed extrusion head, along with a vacuum and gradient cooling device, stable forming and uniform adhesion of the ribs are achieved.
It improves the efficiency and reliability of cable differentiation, reduces costs, enhances identification and the stability of the ribs, avoids color mixing caused by the backflow of rib material, and increases the service life of the cable sheath.
Smart Images
Figure CN120886451A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of cable sheath, in particular to a cable rib color band sheath preparation mold and preparation method. BACKGROUND
[0002] In railway projects, due to the increase of construction time of part of the projects, it is necessary to continuously replace the old cables of the old projects. In order to distinguish the new and old cables, while avoiding the increase of cost of using different color cable sheaths and avoiding the confusion of the use of the cables, it is usually required to mark the new cables.
[0003] However, if the purchased cables are directly re-colored and marked, the operation difficulty and the modification cost are increased, and the production efficiency is greatly reduced. Meanwhile, the re-marking in the later stage has the problems of non-uniform marking and non-easy identification. Meanwhile, there is a problem that the two colors mutually penetrate during use to jointly constitute the cable outer skin. The interlayer bonding force of the surface coating is poor, the stability of the marking is reduced, the identification difficulty is increased, and the risk of identification error is increased. Therefore, the existing cable sheath cannot meet the use requirement of marking and distinguishing. SUMMARY
[0004] The purpose of the present application is to provide a cable rib color band sheath preparation mold and preparation method, which solves the technical problem that the current cable sheath is not easy to identify.
[0005] The solution of the present application to the above technical problem is as follows: A cable rib color band sheath preparation mold, comprising a sheath extruding machine and a rib extruding head. The rib extruding head is arranged at the discharge port of the sheath extruding machine, the feeding end of the rib extruding head is communicated with the discharge port of the sheath extruding machine, a rib groove is arranged above the discharge port of the rib extruding head, the rib groove is arranged along the axial direction of the discharge port of the rib extruding head, and the rib groove is communicated with the discharge port of the rib extruding head.
[0006] Further limited, a second wire hole, a second sheath feeding hole and a rib feeding port are arranged on the rib extruding head, the second sheath feeding hole is arranged outside the second wire hole, the rib groove is arranged at one side of the end of the second sheath feeding hole, the rib groove is communicated with the second sheath feeding hole, and the bottom end of the rib feeding port is communicated with the rib groove.
[0007] Further limited, the depth of the discharge port of the rib groove is 0.1mm-0.3mm, the width of the rib groove is 15mm-17mm, the length of the rib groove is 11mm-13mm, the bottom end of the rib groove and the two side ends are transitioned through a circular arc segment, the central angle of the circular arc segment is 120°-160°, and the distance between the second wire hole and the second sheath feeding hole is 5.8mm-6.2mm.
[0008] Further limited, the included angle between the bottom end of the rib groove and the second wire hole axis is 2°~4°, the included angle between the second sheath feeding hole and the second wire hole axis is 3°~5°, and the angle between the bottom end of the rib groove and the second wire hole axis is smaller than the angle between the second sheath feeding hole and the second wire hole axis.
[0009] Further limited, the rib extrusion head is provided with a rib feeding mechanism, which is communicated with the rib extrusion head through a rib feeding port.
[0010] Further limited, the rib feeding mechanism comprises a rib material box and a rib feeding pipe, one end of the rib feeding pipe is communicated with the discharge port of the rib material box, and the other end of the rib feeding pipe is threadedly connected with the rib feeding port.
[0011] Further limited, the sheath extruder is provided with a first wire hole and a first sheath feeding hole, the first sheath feeding hole is sleeved outside the first wire hole, the first wire hole is communicated with the second wire hole, the first wire hole and the second wire hole are coaxially arranged, and the first sheath feeding hole is communicated with the second sheath feeding hole.
[0012] Further limited, the cable rib color band sheath preparation mold further comprises a vacuumizing device, which is communicated with the first wire hole.
[0013] Further limited, the cable rib color band sheath preparation mold further comprises a gradient cooling device, which is arranged outside the discharge port of the rib extrusion head and opposite to the discharge port of the rib extrusion head.
[0014] A cable rib color band sheath preparation method based on the above cable rib color band sheath preparation mold, comprising the following steps: The black low-smoke halogen-free flame-retardant polyolefin material is added into the sheath extruder and preheated to 80℃ as the sheath material; The low-smoke halogen-free flame-retardant polyolefin material and the anti-ultraviolet color master batch are mixed according to a weight ratio of 10~5:1 and dried to a water content of less than 0.03% as the rib material; The cable mold core is inserted into the sheath extruder and extended into the rib extrusion head; The sheath extruder extrudes the sheath material to the peripheral side of the cable mold core; The rib material is injected into the rib groove and covers the outside of the corresponding position of the sheath material; After cooling, the outside of the cable mold core forms a sheath, and the rib is formed at the corresponding position outside the sheath.
[0015] The beneficial effects of the present application are: 1. The present application realizes the cable processing sheath at the same time, sets the boss on the outside of the sheath as an identification, facilitates the cable to be distinguished in the later construction, improves the work efficiency and reliability by adding the boss extrusion head on the sheath extrusion machine.
[0016] 2. The sheath material and the boss material are the same, which is convenient for stable combination of the two, improves the service life, reduces the cost; at the same time, the boss can be selected to be different from the sheath color to further distinguish, improve the identification, set the arc segment on the boss groove, optimize the forming structure of the boss, ensure the stability and reliability of the boss forming; by setting the boss groove to be inclined, the filling is more sufficient, the extruded boss is more smooth, and the color mixing caused by the backflow of the boss material is prevented. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is a cross-sectional view of the cable boss color band sheath preparation mold of the present application; Figure 2 It is a cross-sectional view of the boss extrusion head of the present application; Figure 3 It is a right view of the boss extrusion head of the present application; Figure 4 It is a cross-sectional view of the cable with boss of the present application; In the figure, 10 is a sheath extrusion machine; 11 is a first wire hole; 12 is a first sheath feeding hole; 20 is a boss extrusion head; 21 is a second wire hole; 22 is a second sheath feeding hole; 23 is a boss feeding port; 30 is a boss groove; 31 is an arc segment; 40 is a boss feeding mechanism; 41 is a boss material box; 42 is a boss feeding pipe; 50 is a vacuum pumping device; 60 is a gradient cooling device; 70 is a cable mold core; 71 is a sheath; 72 is a boss. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0019] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.
[0020] It should be noted that like reference numerals and characters refer to like elements throughout the following figures and description, and thus, once certain terminologies are defined in one figure, they do not need to be further defined and explained in the subsequent figures.
[0021] In the description of the embodiments of the present application, it should be noted that the orientation or position relationship indicated by the terms "upper", "lower", "horizontal", "inner" and the like is based on the orientation or position relationship shown in the drawings or the orientation or position relationship commonly used when the product of the present application is used, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0022] Embodiment 1 With reference to Figures 1-4 The present application provides a cable rib color band sheath preparation mold, comprising a sheath extruding machine (10) and a rib extruding head (20); wherein the rib extruding head (20) is arranged at the discharge port of the sheath extruding machine (10), the feeding end of the rib extruding head (20) is in communication with the discharge port of the sheath extruding machine (10), and the sheath extruding machine (10) extrudes the internal sheath material into the rib extruding head (20), so as to facilitate the formation of the sheath outside the cable mold core 70.
[0023] A rib groove (30) is formed above the discharge port of the rib extruding head (20), the rib groove (30) is formed along the axis direction of the discharge port of the rib extruding head (20), and the rib groove (30) is in communication with the discharge port of the rib extruding head (20). In the processing process, the rib material can be injected into the rib groove 30, the rib material contacts and covers the outside of the sheath material, and at the same time, the rib material forms a rib 72 under the constraint of the rib groove 30, the rib 72 is arranged at the corresponding position outside the sheath 71 along the axis direction of the cable mold core 70, so as to facilitate the differentiation and identification of new and old cables, and meet the actual use requirements.
[0024] With reference to Figure 1 A first wire hole 11 and a first sheath feeding hole 12 are formed on the sheath extruding machine 10, and the first sheath feeding hole 12 is arranged outside the first wire hole 11; in the processing process, the cable mold core 70 is arranged in the first wire hole 11, the sheath extruding machine 10 can drive the cable mold core 70 to pass through the rib extruding head 20 along the axis thereof, the sheath extruding machine 10 can inject the sheath material into the first sheath feeding hole 12, so as to form the sheath 71 outside the cable mold core 70 when the cable mold core 70 is extruded from the rib extruding head 20, and therefore the first sheath feeding hole 12 is in communication with the rib extruding head 20.
[0025] Preferably, the sheath material is a low-smoke halogen-free flame-retardant polyolefin material, the color is preferably black, and the sheath material is injected into a sheath feeding hole 12 after being preheated to 80°C by a sheath extruder 10 to ensure the flame-retardant performance of the cable; in order to ensure the adhesion of the sheath material to the cable mold core 70, an AlCrN / TiSiN multilayer composite coating is preferably applied to the outer surface of the cable mold core 70, so that the friction coefficient is less than 0.15, and the scratching caused by the relative sliding of the mold core and the material can be avoided, and the surface finish of the sheath can be improved.
[0026] Further, in order to improve the processing quality of the sheath 71 and the ribs 72 on the cable mold core 70, the cable rib color band sheath preparation mold also includes a vacuum pumping device 50 and a gradient cooling device 60.
[0027] The vacuum pumping device 50 is connected to the sheath extruder 10, and the air outlet end of the vacuum pumping device 50 is in communication with the first wire hole 11, which is used to pump the gap between the cable mold core 70 and the sheath material, so that the sheath material can be uniformly and tightly attached to the outer wall of the cable mold core 70, and the stability of the flame-retardant performance of the cable can be ensured.
[0028] The gradient cooling device 60 is arranged at the discharge end of the rib extrusion head 20, which is used to cool the cable with the processed sheath 71 and the rib 72, and ensure the forming effect; the gradient cooling device 60 can use water mist cooling first, and then immerse in circulating cooling water for gradient cooling.
[0029] Specifically, referring to Figure 2 and Figure 3 , the rib extrusion head 20 is provided with a second wire hole 21, a second sheath feeding hole 22 and a rib feeding port 23, the second sheath feeding hole 22 is arranged outside the second wire hole 21, the rib groove 30 is located on one side of the end of the second sheath feeding hole 22, the rib groove 30 is in communication with the second sheath feeding hole 22, and the bottom end of the rib feeding port 23 is in communication with the rib groove 30.
[0030] At this time, the first wire hole 11 is in communication with the second wire hole 21, and the cable mold core 70 is extruded after moving from the first wire hole 11 to the second wire hole 21 during processing, and the first wire hole 11 and the second wire hole 21 are coaxially arranged; the first sheath feeding hole 12 is in communication with the second sheath feeding hole 22, so that the sheath material is injected into the second sheath feeding hole 22 through the first sheath feeding hole 12, and the sheath material is attached to the outer wall of the cable mold core 70 at the end of the second sheath feeding hole 22 to form the sheath 71.
[0031] The rib feeding port 23 is arranged on the rib extrusion head 20, and the rib material flows into the rib extrusion head 20 through the rib feeding port 23, and then the rib material contacts the outer wall of the sheath material at the bottom of the rib feeding port 23, and the rib material forms the rib 72 on the outer wall of the sheath 71 under the constraint of the rib groove 30.
[0032] In order to reduce the material consumption of the convex rib 72, the depth of the discharge port of the convex rib groove 30 is 0.1mm~0.3mm, for example 0.2mm; the width of the convex rib groove 30 is 15mm~17mm, for example 16mm; the length of the convex rib groove 30 is 11mm~13mm, for example 12mm.
[0033] In order to ensure that the convex rib material can effectively fill the convex rib groove 30, it is preferred that the bottom end of the convex rib groove 30 is transitioned to the two side ends through a circular arc segment 31, and the central angle of the circular arc segment 31 is 120°~160°, and further preferably the central angle is 150°.
[0034] In order to ensure that the convex rib material can effectively combine with the sheath material, it is preferred that the convex rib material is a low-smoke halogen-free flame-retardant polyolefin material, and the color can be selected to be natural color, and further preferably an ultraviolet-resistant color masterbatch is added, and the ratio of the weight of the ultraviolet-resistant color masterbatch to the weight of the low-smoke halogen-free flame-retardant polyolefin material is 1:5~1:10, which not only ensures the same ultraviolet-resistant performance as the black sheath 71, but also is consistent with the material of the sheath 72, ensuring the consistency of product performance and improving the reliability of the convex rib 72; wherein the distance between the second wire hole 21 and the second sheath feeding hole 22 is 5.8mm~6.2mm, for example 6mm, that is, the thickness of the sheath 71 is 6mm, which is beneficial to control the uniformity of the thickness of the sheath 71.
[0035] Further preferably, the included angle between the bottom end of the convex rib groove 30 and the axis of the second wire hole 21 is 2°~4°, and the included angle between the second sheath feeding hole 22 and the axis of the second wire hole 21 is 3°~5°, and the angle between the included angle between the bottom end of the convex rib groove 30 and the axis of the second wire hole 21 is smaller than the angle between the second sheath feeding hole 22 and the axis of the second wire hole 21, for example, the included angle between the bottom end of the convex rib groove 30 and the axis of the second wire hole 21 is 3°, and the included angle between the second sheath feeding hole 22 and the axis of the second wire hole 21 can be selected to be 4°; by inclining the convex rib groove 30, the convex rib material can be precisely and clearly attached to the surface of the sheath material without damaging the structure of the sheath 71, and the size requirements of the convex rib 72 are met; at this time, the width of the convex rib 72 after cooling is 8mm~12mm, and the thickness is 0.1mm~0.3mm.
[0036] By reducing the included angle between the bottom end of the convex rib groove 30 and the axis of the second wire hole 21, the convex rib material extruded from the convex rib feeding port 23 can be extruded when passing through the convex rib groove 30, making the filling more sufficient and the extruded convex rib 72 more smooth, while preventing backflow of the convex rib material from causing color mixing.
[0037] During the processing, the moving speed of the cable core 70, the extrusion speed of the sheath material and the extrusion speed of the rib material are adjusted to ensure that the sheath material is uniformly and tightly attached to the cable core 70 and the rib 72 is stably and uniformly attached to the surface of the sheath 71.
[0038] Further, the rib extruding head 20 is provided with a rib feeding mechanism 40 which is in communication with the rib extruding head 20 through the rib feeding port 23.
[0039] The rib feeding mechanism 40 comprises a rib material box 41 and a rib feeding pipe 42, one end of the rib feeding pipe 42 is in communication with the discharge port of the rib material box 41, and the other end of the rib feeding pipe 42 is threadedly connected with the rib feeding port 23 for facilitating disassembly and assembly.
[0040] Embodiment 2 Based on the cable rib color band sheath preparation mold described in embodiment 1, the embodiment provides a cable rib color band sheath preparation method, which comprises the following steps: The black low-smoke halogen-free flame-retardant polyolefin material is added into the sheath extruding machine 10 and preheated to 80℃ as the sheath material; The low-smoke halogen-free flame-retardant polyolefin material and the anti-ultraviolet color master batch are mixed according to a weight ratio of 10-5:1 and dried to a water content of less than 0.03% as the rib material; The cable core 70 is inserted into the sheath extruding machine 10 and extended into the rib extruding head 20; The sheath extruding machine 10 extrudes the sheath material to the peripheral side of the cable core 70; The rib material is injected into the rib groove 30 and covers the outside of the corresponding position of the sheath material; After cooling, the sheath is formed on the outside of the cable core 70, and the rib is formed on the corresponding position outside the sheath.
[0041] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.
[0042] Furthermore, it should be understood that although the specification is described in terms of embodiments, each of which contains only a single independent technical solution, the specification is presented for clarity and for the sake of brevity, and each of the embodiments can be combined with one another, and the technical solutions in each of the embodiments can be combined with one another, to form other embodiments that can be understood by those skilled in the art. The above is only to illustrate the technical idea of the present application, and cannot limit the protection scope of the present application. Any modification made on the basis of the technical idea of the present application, within the scope of the technical solutions, falls within the protection scope of the claims of the present application.
[0043] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A mold for making a cable ribbing tape jacket, characterized by, The jacket extruding machine (10) and the rib extruding head (20) are provided. The rib extruding head (20) is arranged at the discharge port of the jacket extruding machine (10), the feeding end of the rib extruding head (20) is communicated with the discharge port of the jacket extruding machine (10), and the rib groove (30) is arranged above the discharge port of the rib extruding head (20).
2. The cable ribbing tape jacket preparation mold of claim 1 wherein, The rib groove (30) is located at one side of the end of the second jacket feeding hole (22), and the rib groove (30) is communicated with the second jacket feeding hole (22).
3. The cable ribbing tape jacket preparation mold of claim 2 wherein, The depth of the discharge port of the rib groove (30) is 0.1mm-0.3mm, the width of the rib groove (30) is 15mm-17mm, the length of the rib groove (30) is 11mm-13mm, the bottom end of the rib groove (30) and the two side ends are connected through the arc segment (31), the central angle of the arc segment (31) is 120°-160°, the distance between the second wire hole (21) and the second jacket feeding hole (22) is 5.8mm-6.2mm.
4. The cable ribbing tape jacket preparation mold of claim 2 wherein, The angle between the bottom end of the rib groove (30) and the axis of the second wire hole (21) is 2°-4°, the angle between the second jacket feeding hole (22) and the axis of the second wire hole (21) is 3°-5°, and the angle between the bottom end of the rib groove (30) and the axis of the second wire hole (21) is smaller than the angle between the second jacket feeding hole (22) and the axis of the second wire hole (21).
5. The cable ribbing tape jacket preparation mold of claim 4 wherein, The rib feeding mechanism (40) is arranged on the rib extruding head (20) and communicated with the rib extruding head (20) through the rib feeding port (23).
6. The cable ribbing tape jacket preparation mold of claim 5 wherein, The rib feeding mechanism (40) comprises a rib material box (41) and a rib feeding pipe (42), one end of the rib feeding pipe (42) is communicated with the discharge port of the rib material box (41), and the other end of the rib feeding pipe (42) is screwed with the rib feeding port (23).
7. The cable ribbons sheath preparation mold according to claim 5, wherein, The jacket extruding machine (10) is provided with a first wire hole (11) and a first jacket feeding hole (12), the first jacket feeding hole (12) is arranged outside the first wire hole (11), the first wire hole (11) is communicated with the second wire hole (21), and the first wire hole (11) and the second wire hole (21) are coaxially arranged, and the first jacket feeding hole (12) is communicated with the second jacket feeding hole (22).
8. The cable ribbons sheath preparation mold according to claim 7, characterized in that, The cable rib color band jacket preparation mold further comprises a vacuumizing device (50), and the vacuumizing device (50) is communicated with the first wire hole (11).
9. The cable ribbons sheath preparation mold according to claim 8, characterized in that, The cable rib color band sheath preparation mold further comprises a gradient cooling device (60) arranged outside the discharge port of the rib extrusion head (20) and opposite to the discharge port of the rib extrusion head (20).
10. A method of making a cable ribbons sheath characterized by, The cable rib color band sheath preparation mold according to any one of claims 1-9, comprising the following steps: The black low-smoke halogen-free flame-retardant polyolefin material is added into the sheath extruder (10) and preheated to 80°C as the sheath material; The low-smoke halogen-free flame-retardant polyolefin material is mixed with the anti-ultraviolet color masterbatch according to a weight ratio of 10-5:1, and then dried to a water content of less than 0.03% as the rib material; The cable mold core (70) is inserted into the sheath extruder (10) and extends into the rib extrusion head (20); The sheath extruder (10) extrudes the sheath material to the periphery of the cable mold core (70); After the rib material is injected into the rib groove (30), it covers the outside of the corresponding position of the sheath material; After cooling, the sheath is formed on the outside of the cable mold core (70), and the rib is formed on the corresponding position outside the sheath.