A fast feed cable extruder

Abstract

This disclosure relates to the technical field of cable processing. One embodiment of this disclosure provides a fast-feeding cable extruder, comprising: an extruder body and a feed box. The feed box is installed on the top of the extruder body, an outer frame is fixed to one side of the extruder body, a feeding box is disposed on the outer frame, a feeding assembly is disposed within the feed box and the feeding box, and a preheating and stirring assembly is disposed within the feed box. The preheating and stirring assembly includes a central shaft, which is vertically rotatably connected to the top of the feed box. The central shaft is electrically driven to rotate, and a stirring frame is disposed at the lower end of the central shaft. An outer dispersion cover is disposed on the central shaft, and an inner dispersion cover is fixedly connected to the central shaft. The central part of the inner dispersion cover has a circular opening structure, and several heat-conducting plates are fixedly connected to the inner wall of the feed box. This technical solution solves the technical problem of existing technologies lacking raw material preheating and stirring functions.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of cable processing, and more specifically, to a fast-feed cable extruder. Background Technology

[0002] In the cable production process, the extruder is the core equipment for processing the insulation layer and sheath. It heats and melts granular raw materials and then extrudes them to coat the outside of the conductor, forming a uniform protective layer. Its feeding efficiency and the effect of raw material pretreatment directly determine the production pace and product quality. As the cable industry develops towards high output and high quality, the deficiencies of traditional cable extruders in feeding and pretreatment are becoming increasingly apparent. Existing extruders generally suffer from slow feeding methods and lack raw material preheating and stirring functions, which seriously restricts production efficiency and easily affects the uniformity of raw material melting, thus reducing the quality of the cable protective layer.

[0003] Traditional cable extruders often employ a single-screw or simple hopper feeding structure, where raw materials fall slowly into the extruder barrel under their own weight. If the raw material particles clump together due to moisture absorption or other reasons, feed blockages can occur, requiring frequent manual unblocking. This leads to frequent feed interruptions and idling, significantly reducing daily effective production capacity. Furthermore, traditional extruders lack preheating capabilities. After the raw material enters the high-temperature barrel, it relies on the barrel heating element to heat up from zero to melt, which not only prolongs the overall melting time but also causes localized overheating and carbonization or incomplete melting due to the large temperature difference between the inside and outside of the raw material. This results in defects such as bubbles and impurities in the cable protective layer, affecting product yield.

[0004] Therefore, developing cable extruders with rapid feeding, preheating, and mixing functions has become an urgent need for the industry to increase production capacity and ensure cable quality. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a fast-feeding cable extruder, which solves the technical problem that the prior art does not have the function of preheating and stirring raw materials.

[0006] According to one aspect, at least one embodiment of this disclosure provides a fast-feed cable extruder, comprising: The extruder body and the feed box, wherein the feed box is installed on the top of the extruder body; The extruder body includes an outer frame, a feeding box, and a feeding assembly. The outer frame is fixed to one side of the extruder body, the feeding box is mounted on the outer frame, and the feeding assembly is mounted inside the feeding box and the feeding box. A preheating and mixing assembly is disposed in the feed box; The preheating and stirring assembly includes a central shaft, which is vertically rotatably connected to the top of the feed box. The central shaft is driven to rotate by electricity. A stirring frame is provided at the lower end of the central shaft, and an external dispersion cover is provided on the central shaft.

[0007] As a further technical solution, an inner dispersion hood is fixedly connected to the central shaft, the central part of the inner dispersion hood has a circular opening structure, and several heat-conducting plates are fixedly connected to the inner wall of the feed box.

[0008] As a further technical solution, the heat-conducting plate is slidably attached to the bottom surfaces of the outer dispersion cover and the inner dispersion cover, and a number of heating tubes are installed inside the heat-conducting plate. The surfaces of the outer dispersion cover and the inner dispersion cover are both inclined structural surfaces.

[0009] According to another aspect, in at least one embodiment of the present invention, the feeding assembly includes an annular support, the annular support is fixed on the outer frame, the feeding box is slidably connected to the annular support, and an external gear is provided around the outer side of the feeding box.

[0010] As a further technical solution, a drive motor is installed on the annular support, a drive gear is provided at the output end of the drive motor, the drive gear meshes with the external gear, and a conveying pipe is connected to the top of the feed box.

[0011] As a further technical solution, the lower end of the conveying pipe is located inside the feeding box, and several inlets are opened around the surface of the conveying pipe. A conveying auger is installed inside the conveying pipe, and a top cover is fixedly connected to the conveying pipe. The top cover is slidably fitted to the top of the feeding box, and a feeding port is opened on the surface of the top cover.

[0012] As a further technical solution, the side wall of the feeding box is inclined around the perimeter, and the inclination angle of the conveying pipe matches the inclination angle of the outer wall of the feeding box.

[0013] As a further technical solution, a shield is provided on the top of the top cover, and the shield surrounds the periphery of the feeding port.

[0014] The beneficial effects of the embodiments disclosed herein are as follows: In this disclosure, the preheating and mixing assembly solves the problems of raw material agglomeration and uneven preheating in traditional extruders through a layered dispersion and heat conduction preheating design. The central shaft drives the mixing frame and the dispersion hood to work in synergy. The outer and inner dispersion hoods guide the raw material to flow in layers, working in conjunction with the mixing frame to thoroughly break up agglomerates and ensure the raw material is loose and uniform. The heat-conducting plate and heating pipes transfer heat through the dispersion hood, achieving all-round preheating of the raw material and avoiding melting defects caused by localized temperature differences. This structure eliminates the need for additional pretreatment equipment, shortens the raw material melting time, improves extrusion efficiency, and ensures the raw material is preheated to its optimal processing state. This reduces problems such as bubbles and impurities in the cable protection layer, improves product qualification rate, and lays a high-quality raw material foundation for subsequent extrusion processes. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure; Figure 2 This is an isometric sectional view of the present disclosure; Figure 3 Appendix to this disclosure Figure 2 Enlarged view of part A in the middle; Figure 4 Appendix to this disclosure Figure 2 Enlarged view of part B in the middle section; In the diagram: 1. Extruder body; 2. Feed box; 3. Outer frame; 4. Feeding box; 5. Preheating and mixing assembly; 5-1. Central shaft; 5-2. Mixing frame; 5-3. Outer dispersion cover; 5-4. Inner dispersion cover; 5-5. Heat-conducting plate; 5-6. Heating tube; 6. Feeding assembly; 6-1. Annular support; 6-2. External gear; 6-3. Drive motor; 6-4. Drive gear; 6-5. Conveying pipe; 6-6. Inlet; 6-7. Conveying auger; 6-8. Top cover; 6-9. Feeding port; 7. Shielding cover. Detailed Implementation

[0017] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0018] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0019] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0020] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0022] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] like Figures 1-4 As shown, it illustrates a fast-feed cable extruder according to an embodiment of the present disclosure, comprising: The extruder body 1 and the feed box 2 are provided, with the feed box 2 installed on the top of the extruder body 1. The outer frame 3, the feeding box 4, and the feeding assembly 6 are provided. The outer frame 3 is fixed to one side of the extruder body 1, the feeding box 4 is provided on the outer frame 3, and the feeding assembly 6 is provided inside the feeding box 2 and the feeding box 4. Preheating and stirring assembly 5, wherein the preheating and stirring assembly 5 is disposed in the feed box 2; The preheating and stirring assembly 5 includes a central shaft 5-1, which is vertically rotatably connected to the top of the feed box 2. The central shaft 5-1 is driven to rotate by electricity. A stirring frame 5-2 is provided at the lower end of the central shaft 5-1. An outer dispersion cover 5-3 is provided on the central shaft 5-1. An inner dispersion cover 5-4 is fixedly connected to the central shaft 5-1. The central part of the inner dispersion cover 5-4 has a circular opening structure. Several heat-conducting plates 5-5 are fixedly connected to the inner wall of the feed box 2. The heat-conducting plates 5-5 slide against the bottom surfaces of the outer dispersion cover 5-3 and the inner dispersion cover 5-4. Several heating tubes 5-6 are installed inside the heat-conducting plates 5-5. The surfaces of the outer dispersion cover 5-3 and the inner dispersion cover 5-4 are both inclined structural surfaces.

[0024] In some examples, in order to achieve sufficient mixing and efficient preheating of the cable extrusion material entering the feed box 2, and to avoid material agglomeration leading to poor feeding or uneven preheating affecting the subsequent extrusion quality, a preheating and mixing assembly 5 is designed. This assembly includes a central shaft 5-1 that rotates vertically at the top of the feed box 2. It is driven by electricity to rotate stably, providing rotational power for the mixing frame 5-2, the outer dispersion cover 5-3 and the inner dispersion cover 5-4.

[0025] The stirring rack 5-2 at the lower end of the central shaft 5-1 rotates synchronously with the central shaft 5-1, which can stir the material at the bottom of the feed box 2, break up the material clumps, ensure that the material is loose and uniform, and at the same time push the material to move towards the extruder body 1 to avoid the material from accumulating at the bottom.

[0026] A pair of outer dispersion covers 5-3 on the central shaft 5-1 and an inner dispersion cover 5-4 fixedly connected to it form a layered dispersion structure. The circular opening structure in the center of the inner dispersion cover 5-4 facilitates the material to fall from the top and disperse downwards. The inclined structural surfaces of the outer dispersion cover 5-3 and the inner dispersion cover 5-4 can guide the material to slide along the inclined surface, realize the layered flow of the material, and avoid the material from being concentrated in a single area, resulting in insufficient mixing. The inclined surface can also increase the contact area between the material and the dispersion cover, and improve the preheating efficiency in conjunction with the heat conduction plate 5-5.

[0027] Several heat-conducting plates 5-5 fixed to the inner wall of the feed box 2 slide against the bottom surfaces of the outer dispersion hood 5-3 and the inner dispersion hood 5-4. They provide rotational support for the dispersion hood, reducing frictional resistance during rotation, and transfer the heat generated by the heating tubes 5-6 to the dispersion hood. Heat is then conducted through the contact between the dispersion hood and the material. The heating tubes 5-6 inside the heat-conducting plates 5-5 provide a stable heat source. By controlling the power of the heating tubes 5-6, the preheating temperature can be precisely adjusted to meet the preheating requirements of different types of cable extrusion materials, ensuring that the material is preheated to the optimal processing temperature.

[0028] During operation, the material enters the feed box 2, and the central shaft 5-1 drives the mixing frame 5-2 and the dispersion hood to rotate. The dispersion hood guides the material to flow in layers, and the mixing frame 5-2 disperses the material. The heat-conducting plate 5-5 and the heating pipe 5-6 preheat the material through the dispersion hood. Layered dispersion ensures uniform mixing, and heat conduction heating achieves efficient preheating. All components work together to complete the mixing and preheating of the material, meeting the pretreatment requirements of cable extrusion.

[0029] like Figures 1-4 As shown in the figure, the feeding assembly 6 in this embodiment includes an annular support 6-1, which is fixed on the outer frame 3. The feeding box 4 is slidably connected to the annular support 6-1. An external gear 6-2 is arranged around the outer side of the feeding box 4. A drive motor 6-3 is installed on the annular support 6-1. A drive gear 6-4 is arranged at the output end of the drive motor 6-3. The drive gear 6-4 meshes with the external gear 6-2. A conveying pipe 6-5 is connected to the top of the feeding box 2. The lower end of the conveying pipe 6-5 is located inside the feeding box 4. Several inlets 6-6 are opened around the surface of the conveying pipe 6-5. A conveying auger 6-7 is installed inside the conveying pipe 6-5. A top cover 6-8 is fixedly connected to the conveying pipe 6-5. The top cover 6-8 is slidably fitted onto the top of the feeding box 4. A replenishment port 6-9 is opened on the surface of the top cover 6-8.

[0030] In some examples, in order to achieve continuous and rapid feeding of cable extrusion material, avoid feeding interruptions caused by frequent manual replenishment, or affect the processing rhythm of the extruder body 1 due to unstable conveying speed, and ensure the overall processing efficiency of the extruder, a feeding assembly 6 is designed. This assembly includes an annular support 6-1 fixed on the outer frame 3, which provides annular sliding support for the feeding box 4. The feeding box 4 is slidably connected to the annular support 6-1 and can rotate stably along the support.

[0031] The external gear 6-2 around the outer side of the feeding box 4 meshes with the drive gear 6-4 at the output end of the drive motor 6-3 on the annular support 6-1, forming a stable gear transmission mechanism. When the drive motor 6-3 is running, the drive gear 6-4 drives the external gear 6-2 to rotate, which in turn drives the feeding box 4 to rotate along the annular support 6-1, so that the material in the feeding box 4 is evenly distributed, avoiding the accumulation of material in the box and causing poor material discharge. At the same time, it is convenient to replenish material to the conveying pipe 6-5 from different angles.

[0032] The top of the feeding box 2 is connected to the conveying pipe 6-5, and the lower end is located inside the feeding box 4. Several inlets 6-6 around its surface can increase the material entry area, ensuring that the material in the feeding box 4 can quickly enter the conveying pipe 6-5 and avoid blockage caused by a single inlet.

[0033] The conveying auger 6-7 inside the conveying pipe 6-5 generates spiral thrust through rotation, which uniformly conveys the material entering the pipe upward to the feed box 2, realizing quantitative and continuous material conveying. The feeding speed can be adjusted by controlling the auger speed to match the processing rhythm of the preheating and stirring component 5 and the extruder body 1, avoiding material accumulation in the feed box 2 due to excessive feeding or insufficient material supply due to excessive feeding.

[0034] The top cover 6-8 fixed on the conveying pipe 6-5 slides on the top of the feeding box 4, which can prevent the material from falling from the top during the rotation of the feeding box 4 and prevent external dust and impurities from falling into the material and affecting the extrusion quality. The feeding port 6-9 on the surface of the top cover 6-8 makes it easy to add material into the feeding box 4. The feeding can be completed without disassembling the top cover 6-8, which improves the convenience of feeding.

[0035] During operation, the drive motor 6-3 rotates the feeding box 4, and the material enters the conveying pipe 6-5 through the inlet 6-6; the conveying auger 6-7 transports the material to the feeding box 2, while continuously replenishing the material through the replenishment port 6-9. The rotating feeding mechanism ensures smooth material feeding, the auger conveying ensures continuous feeding, and the coordinated operation of all components enables continuous and rapid material feeding, providing a stable raw material supply for the efficient processing of cable extruders.

[0036] For example, such as Figure 3 As shown, the side wall of the feeding box 4 is inclined, and the inclination angle of the conveying pipe 6-5 matches the inclination angle of the outer wall of the feeding box 4.

[0037] In some examples, the side wall of the feeding box 4 is inclined, and the inclination angle of the conveying pipe 6-5 matches the inclination angle of the outer wall of the feeding box 4. The inclined side wall of the feeding box 4 can guide the material in the box to converge towards the conveying pipe 6-5 by gravity, avoiding the accumulation of material in the corner of the feeding box 4, ensuring that the material can continuously move towards the conveying pipe 6-5, and providing sufficient raw materials for subsequent conveying.

[0038] For example, such as Figure 1 As shown, a shield 7 is provided on the top of the top cover 6-8, and the shield 7 surrounds the periphery of the feeding port 6-9.

[0039] In some examples, a shield 7 is provided on the top of the top cover 6-8, surrounding the feed inlet 6-9. This shield prevents material from spilling outwards due to excessive pouring when feeding into the feed inlet 6-9, reducing material waste. It also prevents spilled material from accumulating on the surface of the top cover 6-8, reducing subsequent cleaning workload. The shield 7 also prevents dust, debris, and other impurities from the external environment from falling into the feeding box 4 through the feed inlet 6-9, preventing impurities from mixing into the cable extrusion material and affecting extrusion quality, thus ensuring the cleanliness of the raw material.

[0040] In actual use: The extruded cable material is fed into the feeding box 4 through the feeding port 6-9 of the top cover 6-8. The drive motor 6-3 of the feeding assembly 6 is started, and the drive gear 6-4 meshes with the external gear 6-2 of the feeding box 4, causing the feeding box 4 to rotate smoothly along the annular support 6-1. Under the action of centrifugal force and the inclined box wall, the material converges into the conveying pipe 6-5 and enters the pipe through the inlet 6-6 on the surface of the conveying pipe 6-5. The conveying auger 6-7 is started to convey the material upward at a uniform speed to the feeding box 2. At the same time, the preheating and stirring assembly 5 is started, and the electric drive central shaft 5-1 rotates, driving the stirring frame 5-2, the outer dispersion cover 5-3 and the inner dispersion cover 5-4 to rotate synchronously. The outer dispersion cover 5-3 and the inner dispersion cover 5-4 guide the material to flow in layers, the stirring frame 5-2 breaks up the material clumps, and the heat-conducting plate 5-5 on the inner wall of the feeding box 2 releases heat under the action of the heating pipe 5-6, which is transferred to the material through the dispersion cover to achieve preheating. After preheating and mixing, the raw material falls naturally into the main body 1 of the extruder, completing rapid feeding and pretreatment. During this period, the raw material can be continuously replenished through the feeding ports 6-9 to ensure continuous feeding. The entire process achieves rapid material transportation, uniform mixing and efficient preheating, which is suitable for the continuous production needs of cable extruders.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A fast-feed cable extruder, characterized in that, include: The extruder body (1) and the feed box (2) are installed on the top of the extruder body (1); The outer frame (3), feeding box (4) and feeding assembly (6) are fixed on one side of the extruder body (1), the feeding box (4) is set on the outer frame (3), and the feeding assembly (6) is set inside the feeding box (2) and the feeding box (4); A preheating and stirring assembly (5) is provided in the feed box (2); The preheating and stirring assembly (5) includes a central shaft (5-1), which is vertically rotatably connected to the top of the feed box (2). The central shaft (5-1) is driven to rotate by electricity. A stirring rack (5-2) is provided at the lower end of the central shaft (5-1), and an external dispersion cover (5-3) is provided on the central shaft (5-1).

2. The cable extruder with rapid feeding according to claim 1, characterized in that, An inner dispersion cover (5-4) is fixedly connected to the central shaft (5-1). The central part of the inner dispersion cover (5-4) has a circular opening structure. Several heat-conducting plates (5-5) are fixedly connected to the inner wall of the feed box (2).

3. A fast-feed cable extruder according to claim 2, characterized in that, The heat-conducting plate (5-5) is slidably attached to the bottom surfaces of the outer dispersion cover (5-3) and the inner dispersion cover (5-4). Several heating tubes (5-6) are installed inside the heat-conducting plate (5-5). The surfaces of the outer dispersion cover (5-3) and the inner dispersion cover (5-4) are both inclined structural surfaces.

4. A fast-feed cable extruder according to claim 1, characterized in that, The feeding assembly (6) includes an annular support (6-1), which is fixed on the outer frame (3). The feeding box (4) is slidably connected to the annular support (6-1), and an external gear (6-2) is provided around the outer side of the feeding box (4).

5. A fast-feed cable extruder according to claim 4, characterized in that, A drive motor (6-3) is installed on the annular support (6-1). A drive gear (6-4) is provided at the output end of the drive motor (6-3). The drive gear (6-4) meshes with the external gear (6-2). A conveying pipe (6-5) is connected to the top of the feed box (2).

6. A fast-feed cable extruder according to claim 5, characterized in that, The lower end of the conveying pipe (6-5) is located inside the feeding box (4). Several inlets (6-6) are opened around the surface of the conveying pipe (6-5). A conveying auger (6-7) is installed inside the conveying pipe (6-5). A top cover (6-8) is fixedly connected to the conveying pipe (6-5). The top cover (6-8) is slidably fitted to the top of the feeding box (4). A feeding port (6-9) is opened on the surface of the top cover (6-8).

7. A fast-feed cable extruder according to claim 5, characterized in that, The side wall of the feeding box (4) is inclined, and the inclination angle of the conveying pipe (6-5) matches the inclination angle of the outer wall of the feeding box (4).

8. A fast-feed cable extruder according to claim 6, characterized in that, The top cover (6-8) is provided with a shield (7) on top, and the shield (7) surrounds the periphery of the feeding port (6-9).

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