Cable sheath surface colored tape extrusion equipment
By designing a ribbon extrusion equipment for the surface of cable sheath, the problems of complex operation, high maintenance costs and unstable ribbon quality in the prior art are solved, and efficient and stable ribbon production and cable quality improvement are achieved.
Patent Information
- Application Number
- CN202421521647.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-07-01
AI Technical Summary
In the prior art, the method of color identification of cable outer sheath is complex in operation, high maintenance costs, and unstable ribbon quality.
A cable sheath surface ribbon extrusion equipment is designed, including an extrusion die core and an extrusion die sleeve, and the integrated extrusion of ribbon and outer sheath is achieved through a ribbon die and a ribbon melter.
The production process is simplified, production efficiency is improved, production costs are reduced, the ribbons are evenly distributed and clearly presented, and the overall quality of the cable is improved.
Smart Images
Figure CN222785102U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cable production, in particular to a device for extruding a color ribbon on the surface of a cable sheath. Background Art
[0002] In the cable manufacturing industry, especially in the production process of signal cables, in order to meet customers' demand for color identification of cable outer sheaths so as to more intuitively distinguish the different uses of cables, manufacturers usually use various methods to add color bands on the surface of cable outer sheaths. At present, the mainstream methods of adding color bands on the market include inkjet printing, transfer printing and direct printing.
[0003] Ink jet printing: This method uses gas to print colored ink onto the cable surface according to specific requirements, thus forming a color band on the surface of the cable outer sheath. Although ink jet printing can achieve high-precision color positioning, its operation process is relatively complicated and requires strict control of the printing speed and ink viscosity to ensure the uniformity and clarity of the color band. In addition, ink jet printing also faces the problem of ink drying and curing, which may affect the performance and appearance of the cable.
[0004] Transfer printing: The transfer printing method first engraves a ribbon ring on a specific flat wheel as required, then immerses the flat wheel in an ink tank, and forms a color ring by driving the flat wheel and scraping the flat wheel surface with a scraper. Subsequently, the color ring is transferred to the surface of the cable sheath through a transfer wheel. This method can achieve continuous production of ribbons, but the transfer process needs to ensure that the color ring fits tightly with the surface of the cable sheath to avoid the ribbon falling off or bubbles. In addition, the transfer method also requires regular maintenance and replacement of the flat wheel and transfer wheel to ensure the clarity and quality of the ribbon.
[0005] Direct printing: The direct printing method is similar to the transfer printing method. The color ring is formed by engraving a ribbon ring on a specific flat wheel and immersing it in an ink tank. The color ring is formed by scraping the flat wheel surface with a scraper. The difference is that the direct printing method prints the color ring directly on the surface of the cable sheath without the need for a transfer wheel. This method simplifies the production process, but it is also necessary to ensure that the color ring fits tightly to the surface of the cable sheath to avoid the ribbon falling off or bubbles. In addition, the direct printing method also requires regular maintenance and replacement of the flat wheel to ensure the clarity and quality of the ribbon.
[0006] The above methods meet the needs of cable outer sheath color identification to a certain extent, but they all have certain limitations, such as complex operation, high maintenance cost, and unstable ribbon quality. Utility Model Content
[0007] The utility model aims at the technical problems existing in the prior art and provides a cable sheath surface color ribbon extrusion device to solve the problem of complex operation of the cable outer sheath color marking method.
[0008] The utility model solves the above technical problems with the following technical solutions: a cable sheath surface ribbon extrusion device, comprising an extrusion die core and an extrusion die sleeve;
[0009] The extrusion mold core is installed in the extrusion mold sleeve, and a fiber core delivery channel is reserved inside the extrusion mold core; an outer sheath rubber material delivery channel is reserved between the extrusion mold core and the extrusion mold sleeve; the channel entrance of the outer sheath rubber material delivery channel is connected to the cable outer sheath extruder;
[0010] The front end area of the extrusion die sleeve is provided with a ribbon die channel connected to the outer sheath rubber material conveying channel;
[0011] A ribbon heat fuser is arranged along the ribbon die entrance.
[0012] On the basis of the above technical solution, the present invention can also be improved as follows.
[0013] Furthermore, the extrusion mold core comprises a guide section and a sizing section, the diameter of the fiber core conveying channel in the guide section decreases from the outside to the sizing section, and the diameter of the fiber core conveying channel in the sizing section is constant.
[0014] Furthermore, the ribbon die includes a feed contraction section and an extrusion section; the inner diameter of the feed contraction section decreases along the material belt conveying direction toward the extrusion section; the inner diameter of the extrusion section is constant, and is connected to the outer sheath rubber conveying channel.
[0015] Furthermore, a ribbon placement disk and a ribbon conveying roller group are sequentially arranged along the ribbon conveying direction; the ribbon conveying roller group is used to pull and convey the ribbon on the ribbon placement disk to the ribbon mold path.
[0016] Furthermore, the ribbon conveying roller set includes two power rollers arranged at intervals, and a ribbon conveying gap is reserved between the two power rollers.
[0017] Furthermore, the extrusion die core and the extrusion die sleeve are both made of alloy structural steel.
[0018] Moreover, the cable sheath surface ribbon extrusion device provided by the utility model has at least the following beneficial effects compared with the prior art:
[0019] The design of the guide section and sizing section of the extrusion die core ensures a smooth transition of the fiber core during transportation, avoiding possible bending or deformation of the fiber core during transportation, thereby ensuring the overall quality of the cable. The design of the ribbon die, including the feed contraction section and the extrusion section, ensures that the ribbon can be accurately positioned and preheated before entering the outer sheath rubber delivery channel, thereby ensuring the uniform distribution and clear presentation of the ribbon on the cable sheath surface. By integrating the ribbon fuser and the ribbon die into the extrusion die sleeve, the integrated extrusion of the ribbon and the cable outer sheath is achieved, which improves production efficiency, reduces multiple processes in the production process, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0022] 1. Extrusion mold core; 1.1. Fiber core conveying channel; 1.2. Outer sheath rubber conveying channel; 2. Extrusion mold sleeve; 2.1. Ribbon mold channel; 3. Ribbon hot melter; 4. Ribbon placement tray; 5. Ribbon conveying roller set. DETAILED DESCRIPTION
[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.
[0024] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrally formed structure. For ordinary technicians in this field, the specific meanings of such terms in this patent can be understood according to specific circumstances.
[0025] like Figure 1 As shown, the cable sheath surface ribbon extrusion equipment of the practical design includes an extrusion mold core 1 and an extrusion mold sleeve 2;
[0026] The extrusion mold core 1 is installed in the extrusion mold sleeve 2, and a fiber core delivery channel 1.1 is reserved inside the extrusion mold core 1; an outer sheath rubber material delivery channel 1.2 is reserved between the extrusion mold core 1 and the extrusion mold sleeve 2; the channel entrance of the outer sheath rubber material delivery channel 1.2 is connected to the cable outer sheath extruder;
[0027] The front end area of the extrusion die sleeve 2 is provided with a ribbon die channel 2.1 which is connected to the outer sheath rubber material conveying channel 1.2;
[0028] A ribbon fuser 3 is arranged along the inlet of the ribbon die path 2.1.
[0029] The fiber core of the cable is delivered through the fiber core delivery channel 1.1 reserved inside the extrusion mold core 1. This channel ensures that the fiber core can maintain a stable position during the extrusion process so as to accurately cover the subsequent outer sheath and ribbon.
[0030] The outer sheath rubber compound is delivered through the outer sheath rubber compound delivery channel 1.2, which is located between the extrusion die core 1 and the extrusion die sleeve 2. The channel inlet is connected to an external cable outer sheath extruder to ensure that the rubber compound can be continuously and stably supplied.
[0031] The front end of the extrusion die set 2 is provided with a ribbon die channel 2.1, which is connected to the outer sheath rubber material delivery channel 1.2. The inlet edge of the ribbon die channel 2.1 is provided with a ribbon hot melter 3. When the ribbon material (usually a plastic ribbon or a film) passes through the ribbon hot melter 3, it will be heated to a suitable temperature, making it soft and easy to fuse with the outer sheath rubber material.
[0032] The hot-melted ribbon material is further shaped in the ribbon die 2.1 and extruded together with the outer sheath rubber to cover the fiber core. Due to the special design of the ribbon die 2.1, the ribbon can be accurately extruded on the outer sheath surface of the cable in a specific shape and position.
[0033] The extruded cable passes through a cooling zone, where the outer jacket and ribbon cool and solidify to form a stable and reliable cable structure.
[0034] As a supplement, the ribbon fuser 3 usually uses an electric heating element as the main heating method. The electric heating element can quickly and evenly transfer heat to the ribbon material to ensure that it reaches the required melting temperature in a short time. The heating head temperature is usually controlled within the range of 260±5℃.
[0035] As an embodiment, the extrusion core 1 includes a guide section and a sizing section, the diameter of the fiber core conveying channel 1.1 in the guide section decreases from the outside to the sizing section, and the diameter of the fiber core conveying channel 1.1 in the sizing section is constant.
[0036] Specifically, the ribbon die 2.1 includes a feed contraction section and an extrusion section; the inner diameter of the feed contraction section decreases along the material conveying direction toward the extrusion section; the inner diameter of the extrusion section is constant and is connected to the outer sheath rubber conveying channel 1.2. The diameter of the extrusion section of the ribbon die 2.1 is 10%-60% of the outer diameter of the cable.
[0037] Fiber core delivery and shaping:
[0038] The fiber core is transported through the fiber core transport channel 1.1 inside the extrusion mold core 1.
[0039] The guide section of the extrusion mold core 1 is designed so that the diameter of the fiber core delivery channel 1.1 decreases from the outside to the sizing section. This design helps to gradually compress and shape the fiber core before it enters the sizing section, ensuring the stability and accuracy of the fiber core during the subsequent outer sheath extrusion process.
[0040] The diameter of the fiber core conveying channel 1.1 in the sizing section is constant, ensuring that the fiber core maintains a constant diameter and shape when passing through the section.
[0041] Outer sheath rubber material delivery:
[0042] The outer sheath rubber compound is conveyed to the space between the extrusion die core 1 and the extrusion die sleeve 2 through the outer sheath rubber compound conveying channel 1.2.
[0043] The outer sheath rubber compound is gradually wrapped around the outside of the fiber core during the transportation process to form the outer sheath of the cable.
[0044] Ribbon die and ribbon hot melt:
[0045] The ribbon die channel 2.1 is located in the front end area of the extrusion die sleeve 2 and is communicated with the outer sheath rubber material conveying channel 1.2.
[0046] The ribbon die 2.1 includes a feed contraction section and an extrusion section. The inner diameter of the feed contraction section decreases gradually toward the extrusion section along the conveying direction of the ribbon. This design helps to gradually guide and compress the ribbon material so that it can be better integrated into the outer sheath rubber compound.
[0047] The inner diameter of the extruded section is constant, and its diameter is 10%-60% of the outer diameter of the cable. This range ensures the proper position and width of the ribbon on the outer sheath of the cable, neither too narrow to be difficult to identify nor too wide to affect the appearance and performance of the cable.
[0048] Before the ribbon passes through the extrusion section of the ribbon die 2.1, it is first heated by the ribbon hot melter 3. The hot melter heats the ribbon to a suitable temperature, making it soft and easy to fuse with the outer sheath rubber material.
[0049] Ribbon extrusion and outer sheath molding:
[0050] The hot-melt treated ribbon is further shaped in the extrusion section of the ribbon die 2.1 and is extruded together with the outer sheath rubber material to cover the fiber core.
[0051] During the extrusion process, the color ribbon is precisely embedded into the outer jacket compound, forming a clearly visible color band.
[0052] The outer sheath rubber gradually cools and solidifies to form a stable and reliable cable structure, and the color ribbon is permanently retained on the surface of the cable outer sheath as a mark to identify and distinguish the different uses of the cable.
[0053] As an embodiment, a ribbon placement disk 4 and a ribbon delivery roller set 5 are sequentially arranged along the ribbon delivery direction; the ribbon delivery roller set 5 is used to pull and deliver the ribbon on the ribbon placement disk 4 to the ribbon mold path 2.1. The ribbon placement disk 4 is the initial storage position of the ribbon. Usually, the ribbon will be wound on the placement disk to ensure that the ribbon can be continuously supplied and prevent twisting or tangling during the delivery process.
[0054] Specifically, the ribbon conveying roller set 5 includes two power rollers arranged at intervals, and a ribbon conveying gap is reserved between the two power rollers. The two power rollers are synchronously rotated by a driving mechanism such as a motor, a transmission belt, etc., so that a ribbon conveying gap is reserved between them. When the power rollers rotate, the ribbon is pulled and passes through the gap and is conveyed to the ribbon mold path 2.1 along a set path.
[0055] As an implementation method, the ribbon can be any color. As a mark on the outer sheath of the cable, the diversity of its colors is crucial to meet different cable identification requirements. This implementation method emphasizes that the ribbon can be any color, which means that the device can adapt to the use of ribbons of different colors, thereby meeting the diverse requirements for cable identification in the market. By replacing ribbons of different colors, the device can easily distinguish and identify different cables, thereby improving the recognition and use efficiency of the cables.
[0056] As an implementation method, the extrusion die core 1 and the extrusion die sleeve 2 are both made of alloy structural steel. As a high-quality material, alloy structural steel has the characteristics of high strength, high wear resistance and good processing performance. Alloy structural steel is selected as the material of the extrusion die core 1 and the extrusion die sleeve 2.
[0057] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.
[0058] Although the preferred embodiments of the utility model have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the utility model.
[0059] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
Claims
1. A cable sheath surface ribbon extrusion device, characterized in that: It comprises an extrusion mold core (1) and an extrusion mold sleeve (2); The extrusion mold core (1) is installed in the extrusion mold sleeve (2), and a fiber core delivery channel (1.1) is reserved inside the extrusion mold core (1); an outer sheath rubber material delivery channel (1.2) is reserved between the extrusion mold core (1) and the extrusion mold sleeve (2); the channel entrance of the outer sheath rubber material delivery channel (1.2) is connected to the cable outer sheath extruder; The front end area of the extrusion die sleeve (2) is provided with a ribbon die channel (2.1) which is connected to the outer sheath rubber material conveying channel (1.2); A ribbon heat fuser (3) is arranged along the entrance of the ribbon die path (2.1).
2. The cable sheath surface ribbon extrusion equipment according to claim 1, characterized in that: The extrusion mold core (1) comprises a guide section and a sizing section, the diameter of the fiber core conveying channel (1.1) in the guide section decreases from the outside to the sizing section, and the diameter of the fiber core conveying channel (1.1) in the sizing section is constant.
3. The cable sheath surface ribbon extrusion equipment according to claim 1, characterized in that: The ribbon die (2.1) comprises a feed contraction section and an extrusion section; the inner diameter of the feed contraction section decreases gradually along the material belt conveying direction toward the extrusion section; the inner diameter of the extrusion section is constant and is connected to the outer sheath rubber material conveying channel (1.2).
4. The cable sheath surface ribbon extrusion equipment according to claim 1, characterized in that: A ribbon placement disk (4) and a ribbon delivery roller group (5) are arranged in sequence along the ribbon delivery direction; the ribbon delivery roller group (5) is used to pull and deliver the ribbon on the ribbon placement disk (4) to the ribbon mold path (2.1).
5. The cable sheath surface ribbon extrusion device according to claim 4, characterized in that: The ribbon conveying roller set (5) comprises two power rollers arranged at an interval, and a ribbon conveying gap is reserved between the two power rollers.
6. The cable sheath surface ribbon extrusion equipment according to claim 3, characterized in that: The diameter of the extrusion section of the ribbon die (2.1) is 10%-60% of the outer diameter of the cable.
7. The cable sheath surface ribbon extrusion equipment according to claim 1, characterized in that: The extrusion die core (1) and the extrusion die sleeve (2) are both made of alloy structural steel.