A mineral fireproof cable rolling mill

Abstract

The present disclosure relates to the technical field of cable processing, and one embodiment of the present disclosure provides a mineral fireproof cable rolling mill, which comprises a rack and a pair of vertical plates, the vertical plates are fixed on the rack, an introduction and pressing assembly is arranged between the vertical plates, and a cooling and winding assembly is arranged on the rack; the introduction and pressing assembly comprises an introduction pipeline, the introduction pipeline is fixed at the upper end between the vertical plates, a pair of clamping plates are fixedly connected between the vertical plates, anti-deviation grooves are formed on the surfaces of the clamping plates, and a pair of heating pipes are arranged in the clamping plates. Through the above technical scheme, the technical problem that the existing rolling mill for cable pressing in the prior art generally does not have heating and cooling functions, and only relies on mechanical pressure to realize pressing, and is difficult to adapt to the shaping requirements of special materials of mineral fireproof cables is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of cable processing, and more specifically, to a mineral fire-resistant cable rolling mill. Background Technology

[0002] In the production of mineral fire-resistant cables, the rolling and pressing process after winding is a crucial step in ensuring the cable's structural stability and fire resistance. Mineral fire-resistant cables contain a mineral insulation layer (such as magnesium oxide) and a metal sheath (such as copper / aluminum sheath). Rolling is necessary to ensure a tight bond between these layers, preventing gaps that could lead to flame spread or insulation failure. The tightness of this bonding directly determines the cable's fire resistance limit and service life. As mineral fire-resistant cables develop towards higher fire resistance ratings and smaller diameters, the shortcomings of traditional rolling mills become increasingly apparent: existing rolling mills for cable pressing generally lack heating and cooling functions, relying solely on mechanical pressure for compression. This makes it difficult to adapt to the shaping requirements of the special materials in mineral fire-resistant cables, resulting in poor cable compaction and failing to meet high structural and fire resistance standards.

[0003] In traditional rolling mills, the mineral insulation layer is hard and has poor plasticity at room temperature. Mechanical pressure alone cannot fully fill the gaps between layers, leaving small voids. Meanwhile, the metal sheath is prone to localized high temperatures under pressure during rolling. Without cooling regulation, these high temperatures can reduce the sheath's ductility, leading to brittleness, uneven deformation, and ultimately compromising structural tightness. Furthermore, different specifications of mineral fire-resistant cables have varying insulation thicknesses and sheath materials, resulting in different rolling temperature requirements. Without heating, thicker insulation layers cannot be softened to improve adhesion; without cooling, the temperature deformation of the metal sheath cannot be controlled, further exacerbating the instability of the compaction effect.

[0004] Therefore, the development of a special rolling mill with heating and cooling functions that is compatible with the properties of mineral fire-resistant cable materials has become an urgent need to improve the compactness and fire resistance reliability of cables. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a mineral fireproof cable rolling mill, which solves the technical problem that existing rolling mills used for cable pressing generally do not have heating and cooling functions, and rely only on mechanical pressure to achieve pressing, making it difficult to adapt to the shaping requirements of special materials of mineral fireproof cables.

[0006] According to one aspect, at least one embodiment of this disclosure provides a mineral fire-resistant cable rolling mill, comprising: A platform and a pair of uprights, the uprights being fixed to the platform; A clamping assembly is introduced and disposed between the vertical plates; A cooling winding assembly is mounted on the frame. The introduced pressing assembly includes an introduced pipe, which is fixed at the upper end between the upright plates. A pair of clamps are fixedly connected between the upright plates. Anti-deviation grooves are opened on the surface of each clamp, and a pair of heating tubes are installed inside each clamp.

[0007] As a further technical solution, the surface of the clamping plate is provided with several openings, and a rotating wheel is rotatably connected to each opening. The rotating wheel is located at the anti-deviation groove, and several tensioning wheels are rotatably connected between the upright plates, some of which are driven to rotate by electricity.

[0008] As a further technical solution, the cooling and winding assembly includes a notch, which is formed on the surface of the frame. An outlet pipe is fixedly connected inside the notch, and the outlet pipe is fixed inside the notch. A fixing frame is provided at the front end of the frame.

[0009] As a further technical solution, a through groove is provided on the surface of the stand, and a telescopic cylinder is horizontally installed in the through groove. The output end of the telescopic cylinder is connected to a movable frame, and the movable frame and the fixed frame are located on the same axis.

[0010] As a further technical solution, both the fixed frame and the movable frame are rotatably connected to a support plate on their side surfaces. The support plate located on one side of the fixed frame is driven to rotate by electricity. A winding reel is fitted between the support plates. A cold air duct is installed on one side of the platform, and one end of the cold air duct is connected to the outlet duct.

[0011] As a further technical solution, one end of the outlet pipe has a funnel-shaped opening structure.

[0012] As a further technical solution, the axial center of the winding reel and the output pipe are located at the same horizontal level.

[0013] As a further technical solution, the clamping plate has an overall W-shaped structure, and the bending part of the clamping plate has an arc-shaped structural surface.

[0014] According to another aspect, at least one embodiment of the present invention, The beneficial effects of the embodiments disclosed herein are as follows: This disclosure introduces a clamping assembly that solves the problems of traditional rolling mills lacking heating functions and prone to cable deviation through directional guidance, heating softening, and low-resistance conveying design. The synergistic effect of the pipe and anti-deviation groove ensures the cable is conveyed along a fixed path, avoiding processing deviations caused by pre-rolling deviation. The heating pipe heats the clamping plate, softening the insulation and sheath of the mineral fire-resistant cable, improving material plasticity, allowing subsequent clamping to more fully fill interlayer gaps, enhancing cable compactness, and adapting to the special material requirements of mineral cables. The rotating wheel converts sliding friction into rolling friction, reducing surface scratches on the cable and ensuring a good appearance. The tensioning wheel adjusts tension and actively conveys the cable, ensuring stable cable conveying speed and preventing accumulation or tensile deformation. This structure provides the rolling process with precise, well-prepared cables, improving rolling quality from the source and meeting the requirements of mineral fire-resistant cables for compactness and structural stability. 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 drawing of the present disclosure; Figure 3 This is an isometric sectional view of the present disclosure; Figure 4 Appendix to this disclosure Figure 3 Enlarged view of part A in the middle; In the diagram: 1. Stand; 2. Vertical plate; 3. Inlet clamping assembly; 3-1. Inlet pipe; 3-2. Clamping plate; 3-3. Anti-deviation groove; 3-4. Heating tube; 3-5. Through-hole; 3-6. Rotating wheel; 3-7. Tensioning wheel; 4. Cooling and winding assembly; 4-1. Notch; 4-2. Outlet pipe; 4-3. Fixing frame; 4-4. Through-slot; 4-5. Telescopic cylinder; 4-6. Movable frame; 4-7. Support plate; 4-8. Winding reel; 4-9. Cold air pipe. 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 mineral fire-resistant cable rolling mill according to an embodiment of the present disclosure, comprising: A platform 1 and a pair of upright plates 2, wherein the upright plates 2 are fixed on the platform 1; A clamping assembly 3 is introduced and disposed between the vertical plates 2; Cooling and winding assembly 4 is mounted on the frame 1; The introduced pressing assembly 3 includes an introduced pipe 3-1, which is fixed at the upper end between the vertical plates 2. A pair of clamping plates 3-2 are fixedly connected between the vertical plates 2. Anti-deviation grooves 3-3 are opened on the surface of each clamping plate 3-2. A pair of heating tubes 3-4 are provided inside each clamping plate 3-2. Several openings 3-5 are opened on the surface of the clamping plate 3-2. Rotating wheels 3-6 are rotatably connected to each opening 3-5. The rotating wheels 3-6 are located at the anti-deviation grooves 3-3. Several tensioning wheels 3-7 are rotatably connected between the vertical plates 2, and some of the tensioning wheels 3-7 are driven to rotate by electricity.

[0024] In some examples, to achieve stable feeding, precise positioning, and pre-treatment clamping of mineral fireproof cables before rolling, and to avoid cable deviation leading to rolling deviation or surface damage, an introductory clamping assembly 3 is designed. This assembly includes an introductory pipe 3-1 fixed at the upper end between the vertical plates 2 to provide initial guidance for the cable. Its axis is consistent with the subsequent processing path, which can guide the cable into the processing area along a preset direction, avoiding bending or deviation at the cable entry point. A pair of clamping plates 3-2 fixed between the vertical plates 2 are arranged opposite to each other to form a clamping channel for the cable. The anti-deviation groove 3-3 opened on the surface of the clamping plate 3-2 is adapted to the shape of the cable and can restrict its lateral displacement from both sides of the cable, ensuring that the cable always moves along the center line of the anti-deviation groove 3-3, further improving the feeding accuracy.

[0025] A pair of heating tubes 3-4 installed inside the clamp 3-2 can heat the clamp 3-2. The heat is transferred to the cable surface through the clamp 3-2, which softens the outer sheath or insulation layer of the mineral fireproof cable to a certain extent. This facilitates better bonding in subsequent pressing operations and reduces pressing damage caused by excessive hardness. The rotating wheel 3-6, which is rotatably connected inside the opening 3-5 on the surface of the clamp 3-2, is located at the anti-deviation groove 3-3. The rotating wheel 3-6 can rotate synchronously with the cable movement, converting the sliding friction between the cable and the clamp 3-2 into rolling friction, which greatly reduces the cable conduction resistance, avoids scratches on the cable surface due to friction, and assists the cable to move smoothly.

[0026] Several tensioning rollers 3-7, which are rotatably connected between the vertical plates 2, are distributed downstream of the clamping plate 3-2. They can apply appropriate tension from the top, bottom or sides of the cable to adjust the cable tension. Some of the tensioning rollers 3-7 are driven by electricity to rotate and can actively drive the cable to the subsequent process. Together with the inlet pipe 3-1 and the clamping plate 3-2, they form a continuous guiding power to ensure the cable conveying speed is stable and avoid cable accumulation or stretching deformation due to uneven conveying.

[0027] The arc-shaped structure of the anti-deviation groove 3-3 fits tightly against the cable surface, improving positioning stability; the even distribution of the heating tubes 3-4 ensures that the temperature of the clamping plate 3-2 is consistent, avoiding local overheating and damage to the cable; the flexible rotation of the rotating wheel 3-6 ensures smooth delivery; the multi-position distribution of the tensioning wheel 3-7 allows for adjustment of the tension according to the cable specifications.

[0028] During operation, the cable is guided through the inlet pipe 3-1, enters the clamping plate 3-2 and the anti-deviation groove 3-3, the heating pipe 3-4 softens the surface of the cable, the rotating wheel 3-6 assists in guiding, and the tensioning wheel 3-7 adjusts the tension and actively conveys the cable. Multi-stage guiding and anti-deviation ensures precision, heating assists in improving the clamping effect, and all components work together to achieve stable cable guiding and pretreatment, meeting the processing requirements before rolling.

[0029] like Figures 1-4 As shown in the figure, the cooling and winding assembly 4 in this embodiment includes a notch 4-1, which is formed on the surface of the frame 1. A discharge pipe 4-2 is fixedly connected inside the notch 4-1. The discharge pipe 4-2 is fixed inside the notch 4-1. A fixed frame 4-3 is provided at the front end of the frame 1. A through groove 4-4 is formed on the surface of the frame 1. A telescopic cylinder 4-5 is horizontally installed in the through groove 4-4. A movable frame 4-6 is connected to the output end of the telescopic cylinder 4-5. The movable frame 4-6 and the fixed frame 4-3 are located on the same axis. A support plate 4-7 is rotatably connected to the side surface of both the fixed frame 4-3 and the movable frame 4-6. The support plate 4-7 on one side of the fixed frame 4-3 is rotated by electric drive. A winding reel 4-8 is fitted between the support plates 4-7. A cold air pipe 4-9 is installed on one side of the frame 1. One end of the cold air pipe 4-9 is connected to the discharge pipe 4-2.

[0030] In some examples, to achieve rapid cooling and orderly winding of mineral fire-resistant cables after rolling, and to avoid deformation or adhesion caused by winding at high temperatures, a cooling winding assembly 4 is designed. This assembly includes an outlet pipe 4-2 fixed in the notch 4-1 on the surface of the frame 1 to provide a directional conveying channel for the cable before winding. One end of the outlet pipe 4-2 is connected to the exit of the rolling process, and the other end extends to the winding area, which can guide the cable into the winding stage along a fixed path, preventing the cable from shifting during cooling and winding. A cold air pipe 4-9 on one side of the frame 1 is connected to the outlet pipe 4-2. The cold air pipe 4-9 can deliver low-temperature gas into the outlet pipe 4-2. When the high-temperature cable after rolling flows through the outlet pipe 4-2, the low-temperature gas comes into full contact with the cable surface, quickly removes the heat from the cable, and achieves cooling and shaping of the cable, preventing deformation of the high-temperature cable due to its own weight or compression during winding.

[0031] The fixed frame 4-3 at the front end of the platform 1 and the movable frame 4-6 driven by the telescopic cylinder 4-5 in the through slot 4-4 are set opposite to each other and are located on the same axis. This ensures that the axis of the winding reel 4-8 is aligned after installation, and avoids cable skewing during winding. The support plate 4-7, which is rotatably connected to the side surface of the fixed frame 4-3 and the movable frame 4-6, can support the winding reel 4-8 at both ends. The support plate 4-7 on one side of the fixed frame 4-3 is driven by electricity to rotate, which can drive the winding reel 4-8 to rotate synchronously, providing power for cable winding.

[0032] The telescopic cylinder 4-5 can adjust the distance between the movable frame 4-6 and the fixed frame 4-3 by telescopic movement, adapting to take-up reels 4-8 of different widths. When installing the take-up reel 4-8, the telescopic cylinder 4-5 extends to move the movable frame 4-6 away from the fixed frame 4-3. After the take-up reel 4-8 is placed in, the movable frame 4-6 shortens, so that the support plate 4-7 tightly presses against both ends of the take-up reel 4-8, ensuring that the take-up reel 4-8 rotates without shaking and improving the regularity of winding. The sealed design of the outlet pipe 4-2 ensures that the cooling air is concentrated on the cable, improving the cooling efficiency; the surface of the support plate 4-7 can be equipped with an anti-slip structure to enhance the friction with the winding plate 4-8 and prevent the winding plate 4-8 from slipping during winding; the precise control of the telescopic cylinder 4-5 makes the installation of the winding plate 4-8 convenient and reduces the time for replacing the winding plate 4-8; the cooling air flow of the cooling air pipe 4-9 can be adjusted according to the cable temperature to ensure that the cooling effect is adapted to different rolling conditions.

[0033] During operation, the rolled cable is cooled by cold air through the outlet pipe 4-2. The telescopic cylinder 4-5 adjusts the movable frame 4-6 to install the winding reel 4-8, and the electric support plate 4-7 drives the winding reel 4-8 to wind up the cable. Directional cooling ensures the shaping effect, and adjustable winding adapts to multiple specifications. All components work together to achieve efficient cooling and neat winding of the cable, meeting the needs of subsequent storage and use.

[0034] For example, such as Figure 1 As shown, one end of the outlet pipe 4-2 has a funnel-shaped opening structure.

[0035] In some examples, the flared opening structure at one end of the duct 4-2 significantly improves the ease and smoothness of cable entry into the duct after rolling. The flared opening, with its gradually widening inlet range, can accommodate slight positional shifts that may occur after cable rolling, avoiding jamming or surface scratches caused by misalignment between the cable and the duct inlet.

[0036] For example, such as Figure 1 As shown, the axial center of the winding reel 4-8 and the outlet pipe 4-2 are at the same horizontal level.

[0037] In some examples, the design of having the take-up reel 4-8 and the outlet pipe 4-2 aligned at the same horizontal level ensures that the cable maintains a straight transport posture from the cooling stage to the take-up stage. Horizontal alignment avoids additional tension or slack in the cable during transport due to height differences, preventing problems such as skewed take-up and interlayer misalignment.

[0038] For example, such as Figure 3 As shown, the clamping plate 3-2 has an overall W-shaped structure, and the bending part of the clamping plate 3-2 has an arc-shaped structural surface.

[0039] In some examples, the clamp 3-2 has a W-shaped structure with an arc-shaped bend, enabling the simultaneous conveying and pretreatment of multiple mineral fire-resistant cables. The multiple independent grooves formed by the W-shaped structure can each accommodate a single cable, preventing them from tangling or colliding during the conveying of multiple cables. The arc-shaped bend fits against the cylindrical surface of the cable, preventing sharp edges from scratching the cable sheath and increasing the contact area between the clamp 3-2 and the cable. This allows the heat generated by the heating tube 3-4 to be transferred more evenly to the cable surface, improving the softening and compression effect.

[0040] In practical use: One end of the mineral fire-resistant cable is passed through the inlet pipe 3-1 at the upper end between the vertical plates 2. The inlet pipe 3-1 guides the cable along a preset path into the clamping plate 3-2 area between the vertical plates 2. The cable is embedded in the anti-deviation groove 3-3 on the surface of the clamping plate 3-2, which restricts the lateral displacement of the cable from both sides. The heating tube 3-4 inside the clamping plate 3-2 is activated, and heat is transferred to the clamping plate 3-2 to soften the surface of the cable, adapting to the shaping requirements of the special material of the mineral fire-resistant cable. The rotating wheel 3-6 at the anti-deviation groove 3-3 of the clamping plate 3-2 rotates synchronously with the cable movement, converting sliding friction into rolling friction, reducing cable conduction resistance and surface damage. The tensioning wheel 3-7 (partially electrically driven) between the vertical plates 2 adjusts the cable tension and actively drives the cable to the subsequent rolling process to complete the pre-treatment and pressing. After rolling, the cable enters the outlet pipe 4-2 in the notch 4-1 of the frame 1. The cold air pipe 4-9 on one side of the frame 1 delivers cold air to the outlet pipe 4-2 to quickly cool the cable for shaping. Start the telescopic cylinder 4-5 in the through slot 4-4 of the starter frame 1, push the movable frame 4-6 away from the fixed frame 4-3, and fit the take-up reel 4-8 between the support plate 4-7 of the fixed frame 4-3 and the movable frame 4-6. Retract the cylinder to make the support plate 4-7 press against the take-up reel 4-8. Start the electrically driven support plate 4-7 on the side of the fixed frame 4-3 to drive the take-up reel 4-8 to rotate, and neatly wind up the cooled cable. The funnel-shaped opening of the outlet pipe 4-2 ensures that the cable enters the winding path smoothly.

[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 mineral fireproof cable rolling mill, characterized in that, include: A platform (1) and a pair of uprights (2), the uprights (2) being fixed on the platform (1); A clamping assembly (3) is introduced and disposed between the vertical plates (2); Cooling winding assembly (4), the cooling winding assembly (4) is mounted on the frame (1); The introduced pressing assembly (3) includes an introduced pipe (3-1), which is fixed at the upper end between the vertical plates (2). A pair of clamps (3-2) are fixedly connected between the vertical plates (2). Anti-deviation grooves (3-3) are opened on the surface of each clamp (3-2). A pair of heating tubes (3-4) are provided in each clamp (3-2).

2. The mineral fireproof cable rolling mill according to claim 1, characterized in that, The clamping plate (3-2) has several openings (3-5) on its surface. Each opening (3-5) is rotatably connected to a rotating wheel (3-6). The rotating wheel (3-6) is located at the anti-deviation groove (3-3). Several tensioning wheels (3-7) are rotatably connected between the upright plates (2). Some of the tensioning wheels (3-7) are driven to rotate by electricity.

3. The mineral fireproof cable rolling mill according to claim 1, characterized in that, The cooling and winding assembly (4) includes a notch (4-1), which is formed on the surface of the frame (1). A discharge pipe (4-2) is fixedly connected inside the notch (4-1). The discharge pipe (4-2) is fixed inside the notch (4-1). A fixing frame (4-3) is provided at the front end of the frame (1).

4. A mineral fireproof cable rolling mill according to claim 3, characterized in that, The platform (1) has a through groove (4-4) on its surface. A telescopic cylinder (4-5) is horizontally installed in the through groove (4-4). The output end of the telescopic cylinder (4-5) is connected to a movable frame (4-6). The movable frame (4-6) and the fixed frame (4-3) are located on the same axis.

5. A mineral fireproof cable rolling mill according to claim 4, characterized in that, The fixed frame (4-3) and the movable frame (4-6) are both rotatably connected to the inner side surfaces of the fixed frame (4-3). The support plate (4-7) located on one side of the fixed frame (4-3) is rotated by electric drive. A winding plate (4-8) is fitted between the support plates (4-7). A cold air pipe (4-9) is installed on one side of the platform (1). One end of the cold air pipe (4-9) is connected to the outlet pipe (4-2).

6. A mineral fireproof cable rolling mill according to claim 3, characterized in that, The outlet pipe (4-2) has a funnel-shaped opening at one end.

7. A mineral fireproof cable rolling mill according to claim 5, characterized in that, The take-up reel (4-8) and the outlet pipe (4-2) are located at the same horizontal level.

8. A mineral fireproof cable rolling mill according to claim 1, characterized in that, The clamping plate (3-2) has an overall W-shaped structure, and the bending part of the clamping plate (3-2) is an arc-shaped structural surface.

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