Fireproof cable metal sheath forming device

Abstract

The invention relates to the technical field of fireproof cable manufacturing, and provides a fireproof cable metal sheath forming device which is characterized in that a plurality of longitudinal forming mechanisms, a pre-shaping mechanism and a shaping mechanism are sequentially distributed on a forming platform from one end to the other end, and two transverse forming mechanisms are symmetrically arranged into a group and distributed on one side of each longitudinal forming mechanism; the scanning and collecting assemblies are arranged on the forming platform to scan and collect forming parameters, and the longitudinal forming mechanism comprises a lower rolling assembly, two longitudinal adjusting mechanisms symmetrically arranged on the lower rolling assembly and an upper rolling assembly with the upper portion connected with the longitudinal adjusting mechanisms. The transverse forming mechanism comprises a power assembly, a transverse moving assembly connected with the output end of the power assembly, a longitudinal moving assembly and a transverse rolling assembly, wherein the longitudinal moving assembly and the transverse rolling assembly are arranged on the transverse moving assembly from bottom to top. The forming precision and efficiency of the metal protection layer can be improved.

Description

Technical Field

[0001] This invention relates to the field of fire-resistant cable manufacturing technology, and in particular to a metal sheath forming device for fire-resistant cables. Background Technology

[0002] With the increasing demands for fire safety of cables due to urban construction and industrial development, inorganic insulated metal-sheathed fire-resistant cables are widely used in important locations such as high-rise buildings, subways, and airports due to their excellent high-temperature resistance and fire resistance. As the core protective structure of this type of cable, the quality of the metal sheath directly affects the overall performance and service life of the cable.

[0003] In practical applications, fire-resistant cables with inorganic mineral insulation and metal sheaths are formed by using fixed rollers and molds on a forming platform to shape the metal strip material, followed by longitudinal welding of the formed metal strip using argon arc welding. This forming process has the following drawbacks: 1. The forming accuracy control depends on pre-production debugging. During the forming process, it is impossible to monitor and dynamically compensate for fluctuations in the dimensions of the forming material or equipment operation in real time; 2. Product quality inspection is lagging behind, and the precision requirements of raw materials are high, resulting in significant material loss with each debugging session; 3. A cumbersome debugging process is required before production. Each change in specifications requires re-debugging, resulting in low adjustment accuracy, long processing time, and high debugging intensity.

[0004] Chinese patent CN210060390U discloses an argon arc welding copper tube forming and rolling production line. This production line achieves continuous roll forming, welding, and rolling of copper strips through the sequential arrangement of a fixed frame, operating table, copper strip positioning device, forming components, welding components, and rolling components. However, in practical applications, this solution has the following drawbacks: the forming process relies on rollers with fixed groove widths and simple extrusion rollers, lacking real-time monitoring and dynamic adjustment mechanisms. It is sensitive to fluctuations in raw material dimensions and equipment operational stability, easily leading to inconsistent forming accuracy. Although the rolling components can perform multi-directional rolling, they lack precise pressure and position control, making it difficult to achieve high-precision forming compensation and insufficiently guaranteeing the consistency of the final copper tube dimensions. Debugging relies on mechanical adjustments; changing specifications requires replacing or adjusting rollers and rolling mills, a cumbersome and time-consuming process that demands a high level of operator experience.

[0005] Therefore, how to provide a fireproof cable metal sheath forming device with a reasonable structure, simple debugging, and real-time monitoring and dynamic adjustment of forming accuracy to improve product quality and production efficiency and reduce dependence on the accuracy of raw materials has become an urgent technical problem to be solved. Summary of the Invention

[0006] In view of this, in order to overcome the shortcomings of the prior art, the present invention aims to provide a metal sheath forming device for fireproof cables.

[0007] This invention provides a metal sheath forming device for fire-resistant cables. In this device, multiple longitudinal forming mechanisms, pre-forming mechanisms, and shaping mechanisms are sequentially arranged on a forming platform from one end to the other. Two transverse forming mechanisms are symmetrically arranged as a group and are distributed on one side of each longitudinal forming mechanism. Two scanning and acquisition components are arranged as a group on the forming platform to scan and acquire forming parameters. The longitudinal forming mechanism includes a lower roller pressing component, two sets of longitudinal adjusting mechanisms symmetrically arranged on the lower roller pressing component, and an upper roller pressing component connected to the longitudinal adjusting mechanism. When the longitudinal adjusting mechanism is running, it drives the upper roller pressing component to move longitudinally above the lower roller pressing component. The transverse forming mechanism includes a power component, a transverse moving component connected to the output end of the power component, and a longitudinal moving component and a transverse roller pressing component arranged from bottom to top on the transverse moving component. When the power component is running, it drives the transverse moving component to move, thereby driving the longitudinal moving component and the transverse roller pressing component to move.

[0008] Optionally, in the fireproof cable metal sheath forming device of the present invention, the lower roller pressing assembly includes two symmetrically arranged lower roller pressing frames and a lower roller shaft mounted on the lower roller pressing frames. A first bearing is provided between the two ends of the lower roller shaft and the lower roller pressing frame. A lower roller pressing die is provided on the outer side of the center of the lower roller shaft. The lower roller pressing die and the lower roller shaft are radially fixed by a key fit. A first locking nut is provided on the outer side of the lower roller shaft at both ends of the lower roller pressing die. A second locking nut is provided on both ends of the lower roller shaft. The upper roller pressing assembly includes two symmetrically arranged upper roller pressing frames and an upper roller shaft mounted on the upper roller pressing frames. A second bearing is provided between the two ends of the upper roller shaft and the upper roller pressing frame. An upper roller pressing die is provided on the outer side of the center of the upper roller shaft. The upper roller pressing die and the upper roller shaft are radially fixed by a key fit. A third locking nut is provided on the outer side of the upper roller shaft at both ends of the upper roller pressing die. A fourth locking nut is provided on both ends of the upper roller shaft.

[0009] Optionally, in the fireproof cable metal sheath forming apparatus of the present invention, an arc-shaped groove is provided in the middle of the lower roller pressing die, which is an integral rotating body, and an arc-shaped protrusion is provided in the middle of the upper roller pressing die, which is an integral rotating body. In a longitudinal forming mechanism, the width of the arc-shaped protrusion of the upper roller pressing die is smaller than the width of the arc-shaped groove of the lower roller pressing die. Along the forming direction, the width of the arc-shaped groove of the lower roller pressing die decreases sequentially and the depth increases sequentially, while the width of the arc-shaped protrusion of the upper roller pressing die decreases sequentially and the height of the arc-shaped protrusion increases sequentially.

[0010] Optionally, in the fireproof cable metal sheath forming device of the present invention, the longitudinal adjustment mechanism includes a guide rail, a connecting seat, a first driving component and a driving connecting block. The guide rail is vertically arranged on the lower roller press frame, the connecting seat is fixedly arranged on the top of the guide rail, the first driving component is arranged on the bottom of the connecting seat, one end of the driving connecting block is connected to the output end of the first driving component, the other end of the driving connecting block is sleeved on the guide rail, and the driving connecting block is fixedly connected to the upper roller press frame. When the first driving component works, the driving connecting block moves longitudinally along the guide rail, synchronously driving the upper roller press component to move longitudinally. The first driving component is a servo hydraulic cylinder with an integrated pressure sensor or a digital hydraulic cylinder.

[0011] Optionally, in the fireproof cable metal sheath forming device of the present invention, the power component includes a power motor, an input coupling, a split gearbox, and two output couplings. The power motor is connected to the input shaft of the split gearbox through the input coupling, and the two output couplings are respectively connected to the output shaft of the split gearbox. The lateral movement component includes a lead screw seat and two lead screws symmetrically arranged on the lead screw seat. A third bearing is provided between the lead screw and the lead screw seat. One end of the lead screw is connected to the output coupling of the power component. A sliding seat is sleeved on the two lead screws. The sliding seat and the lead screws are helically assembled. When the power motor is running, it drives the two lead screws to rotate, and synchronously drives the sliding seat to move.

[0012] Optionally, in the fireproof cable metal sheath forming device of the present invention, the longitudinal moving component includes a second driving component and a loading seat. The second driving component is fixedly connected to the top of the sliding seat, and the loading seat is connected to the output end of the second driving component. The components below the loading seat are arranged below the forming platform. Multiple sets of sliding grooves are provided on the forming platform. The sliding grooves are used for the movement of the output end of the second driving component. The second driving component is a servo hydraulic cylinder with an integrated pressure sensor or a digital hydraulic cylinder.

[0013] Optionally, in the fireproof cable metal sheath forming device of the present invention, the transverse roller pressing assembly includes a transverse roller pressing frame, a transverse roller shaft, and a transverse roller pressing die. The transverse roller pressing frame consists of a frame base and a cylindrical part integrally connected to the frame base. A plurality of first locking holes are radially arranged on the cylindrical part. A plurality of second locking holes are radially arranged at the lower end of the transverse roller shaft, which has an overall T-shaped cross-section. The lower end of the transverse roller shaft is coaxially assembled inside the cylindrical part. The transverse roller pressing die is coaxially sleeved on the outside of the transverse roller shaft. A fourth bearing is provided between the transverse roller pressing die and the upper end of the transverse roller shaft. A fifth bearing, a fifth locking nut, and a locking washer are sequentially provided from top to bottom between the transverse roller pressing die and the cylindrical part. The transverse roller pressing die is radially positioned by assembling the locking parts with the first locking holes and the second locking holes.

[0014] Optionally, in the fireproof cable metal sheath forming device of the present invention, the horizontal roller pressing mold, which is a rotating body, is composed of a cylindrical part, a curved surface forming part and a disc part that are integrally connected and whose diameters increase sequentially from top to bottom. The diameter of the curved surface forming part gradually increases from top to bottom and is extended and transitioned by continuous multi-segment curved surfaces. Along the forming direction, the surface slope of the curved surface forming part of the horizontal roller pressing mold increases sequentially.

[0015] Optionally, in the fireproof cable metal sheath forming device of the present invention, the pre-forming mechanism includes a pre-forming seat and a pre-forming mold fixedly assembled in the pre-forming seat. The pre-forming seat consists of a pre-forming seat base and a pre-forming mold loading part integrally connected to the pre-forming seat base. The pre-forming mold loading part is generally non-closed cylindrical. One end of the pre-forming mold loading part is tightly connected to the outlet end of the pre-forming mold. The pre-forming mold is generally non-closed cylindrical. The cross-section of the pre-forming cavity of the pre-forming mold decreases sequentially from the inlet end to the outlet end.

[0016] Optionally, in the fireproof cable metal sheath forming device of the present invention, the shaping mechanism includes a shaping seat and a shaping mold fixedly assembled in the shaping seat. The shaping seat consists of a shaping seat base and a shaping mold loading part integrally connected to the shaping seat base. The shaping mold loading part is cylindrical in shape, and one end of the shaping mold loading part is fastened to the outlet end of the shaping mold. The shaping mold is cylindrical in shape, and the cross-section of the shaping cavity of the shaping mold decreases sequentially from the inlet end to the outlet end.

[0017] The fire-resistant cable metal sheath forming device of the present invention, through comprehensive structural design, has the following beneficial technical effects: 1. Improve molding precision and product quality consistency Through the sequential coordinated action of multiple longitudinal forming mechanisms, transverse forming mechanisms, pre-forming mechanisms, and final forming mechanisms, the metal strip undergoes progressive, multi-directional precision rolling and shaping. The combined design of the longitudinal and transverse forming mechanisms enables precise plastic deformation of the strip in both length and width dimensions.

[0018] The scanning and acquisition components are installed at key stations before and after the forming line, enabling real-time scanning and acquisition of parameters such as the initial dimensions of the strip, the pre-formed shape, and the dimensions of the final product. This data is uploaded to the control system, allowing for real-time monitoring of the entire forming process. When a deviation is detected, a command is sent to the forward forming mechanism, where a servo or digital hydraulic cylinder with an integrated pressure sensor performs high-precision dynamic compensation adjustment. This effectively offsets errors caused by fluctuations in raw material dimensions or equipment operation, greatly reducing the overly high dependence on the precision of the raw material itself, thereby ensuring high consistency in the dimensions and high precision in the shape of the final product.

[0019] 2. Enhance production flexibility and adaptability The longitudinal adjustment mechanism can precisely control the longitudinal position of the upper roller pressing assembly, while the lateral and longitudinal movement components can control the lateral and longitudinal positions of the lateral roller pressing assembly, respectively. This multi-degree-of-freedom adjustment capability, combined with replaceable roller pressing dies, allows the same equipment to be quickly adjusted to adapt to the production of metal coatings of different specifications and sizes, reducing downtime and debugging workload required for product changeovers.

[0020] 3. Improve production efficiency and automation level The power unit drives two synchronous lead screws via a split gearbox, ensuring the synchronicity and stability of the transverse roller pressing assembly's movement. Combined with a scanning acquisition and closed-loop control system, an automated production process is achieved, from parameter acquisition and intelligent judgment to automatic adjustment. This not only reduces the tedious debugging process before production and the resulting material waste, but also reduces over-reliance on operator experience, ensuring the continuous, stable, and efficient operation of the production line. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a structural example diagram of a fireproof cable copper sheath forming device according to an embodiment of the present invention; Figure 2 This is a structural example diagram of a longitudinal forming mechanism according to an embodiment of the present invention; Figure 3 This is an example diagram of the cutting mechanism of the longitudinal forming mechanism according to an embodiment of the present invention; Figure 4 This is an example diagram of the combination of the lower roller pressing die and the upper roller pressing die according to an embodiment of the present invention; Figure 5 This is a structural example diagram of a transverse forming mechanism according to an embodiment of the present invention; Figure 6 This is a cross-sectional view of a lateral movement component according to an embodiment of the present invention; Figure 7 This is a partial example diagram of a copper sheath forming apparatus for fire-resistant cables according to an embodiment of the present invention; Figure 8 This is a structural example diagram of a transverse rolling assembly according to an embodiment of the present invention; Figure 9 This is a structural example diagram of a horizontal roller pressing die according to an embodiment of the present invention; Figure 10This is a structural example diagram of a predetermined mechanism according to an embodiment of the present invention; Figure 11 This is a structural example diagram of the shaping mechanism according to an embodiment of the present invention; In the diagram, A - forming platform, B - longitudinal forming mechanism, C - transverse forming mechanism, D - pre-forming mechanism, E - shaping mechanism, F - scanning and acquisition component, A1 - sliding groove, B1 - lower roller pressing component, B2 - upper roller pressing component, B3 - longitudinal adjustment mechanism, C1 - power component, C2 - transverse movement component, C3 - longitudinal movement component, C4 - transverse roller pressing component, D1 - pre-forming seat, D2 - pre-forming mold, E1 - shaping seat, E2 - shaping mold, B11 - lower roller pressing component Machine frame, B12 - lower roller shaft, B13 - first bearing, B14 - lower roller pressing die, B15 - first locking nut, B16 - second locking nut, B21 - upper roller press frame, B22 - upper roller shaft, B23 - second bearing, B24 - upper roller pressing die, B25 - third locking nut, B26 - fourth locking nut, B31 - guide rail, B32 - connecting seat, B33 - first drive assembly, B34 - drive connecting block, C11 - power motor, C12 - input coupling C13 - Diverter gearbox, C14 - Output coupling, C21 - Leadscrew seat, C22 - Leadscrew, C23 - Third bearing, C24 - Sliding seat, C31 - Second drive assembly, C32 - Loading seat, C41 - Transverse roller press frame, C42 - Transverse roller shaft, C43 - Transverse roller press die, C44 - Fourth bearing, C45 - Fifth bearing, C46 - Fifth locking nut, C47 - Locking washer, D11 - Pre-formed seat base, D12 - Pre-formed die loading part, D 21-Pre-forming cavity, E11-Shaping base, E12-Shaping mold loading part, E21-Shaping cavity, B141-Arc-shaped groove, B241-Arc-shaped protrusion, C411-Frame base, C412-Cylindrical part, C413-First locking hole, C421-Second locking hole, C431-Cylindrical part, C432-Curved surface forming part, C433-Disc part, C434-First assembly cavity, C435-Second assembly cavity, C436-Third assembly cavity. Detailed Implementation

[0023] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0024] It should be noted that, in the absence of conflict, the following embodiments and features can be combined with each other; and, based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0025] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this disclosure, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0026] Figure 1 This is a structural example diagram of a fire-resistant cable copper sheath forming apparatus according to an embodiment of the present invention, as shown below. Figure 1 As shown, the fireproof cable copper sheath forming device of this embodiment includes a forming platform A, multiple longitudinal forming mechanisms B, multiple transverse forming mechanisms C, a pre-forming mechanism D, a shaping mechanism E, and multiple scanning and acquisition components F. The multiple longitudinal forming mechanisms B, pre-forming mechanism D, and shaping mechanism E are arranged sequentially from one end to the other on the forming platform A. Two transverse forming mechanisms C are symmetrically arranged as a group and are distributed one-to-one on one side of each longitudinal forming mechanism B. Two scanning and acquisition components F are arranged as a group on the forming platform A to scan and acquire forming parameters.

[0027] Figure 2 This is a structural example diagram of the longitudinal forming mechanism according to an embodiment of the present invention. Figure 3 This is an example diagram of the cutting mechanism of the longitudinal forming mechanism according to an embodiment of the present invention, as shown below. Figures 1 to 3 As shown, the longitudinal forming mechanism B in this embodiment includes a lower roller pressing assembly B1, an upper roller pressing assembly B2, and two sets of longitudinal adjustment mechanisms B3. The longitudinal adjustment mechanisms B3 are symmetrically arranged on the lower roller pressing assembly B1. The upper part of the upper roller pressing assembly B2 is connected to the longitudinal adjustment mechanism B3. When the longitudinal adjustment mechanism B3 is running, it synchronously drives the upper roller pressing assembly B2 to move longitudinally above the lower roller pressing assembly B1.

[0028] As an optional example, in this embodiment, the lower roller pressing assembly B1 includes two symmetrically arranged lower roller pressing frames B11 and a lower roller shaft B12 mounted on the lower roller pressing frames B11. A first bearing B13 is provided between the two ends of the lower roller shaft B12 and the lower roller pressing frame B11. A lower roller pressing die B14 is provided on the outer side of the center of the lower roller shaft B12. The lower roller pressing die B14 and the lower roller shaft B12 are radially fixed by a key fit. A first locking nut B15 is provided on the outer side of the lower roller shaft B12 at both ends of the lower roller pressing die B14 to achieve axial fixation of the lower roller pressing die B14. A second locking nut B16 is provided on both ends of the lower roller shaft B12 to achieve axial fixation of the lower roller shaft B12.

[0029] The upper roller pressing assembly B2 includes two symmetrically arranged upper roller pressing frames B21 and an upper roller shaft B22 mounted on the upper roller pressing frames B21. A second bearing B23 is provided between the two ends of the upper roller shaft B22 and the upper roller pressing frame B21. An upper roller pressing die B24 is provided on the outer side of the center of the upper roller shaft B22. The upper roller pressing die B24 and the upper roller shaft B22 are radially fixed by a key fit. A third locking nut B25 is provided on the outer side of the upper roller shaft B22 at both ends of the upper roller pressing die B24 to achieve axial fixation of the upper roller pressing die B24. A fourth locking nut B26 is provided on both ends of the upper roller shaft B22 to achieve axial fixation of the upper roller shaft B22.

[0030] It should be noted that, in this embodiment, the lower roller pressing die B14, which is an integral body of revolution, is provided with an arc-shaped groove B141 in the middle, and the upper roller pressing die B24, which is an integral body of revolution, is provided with an arc-shaped protrusion B241 in the middle. In a longitudinal forming mechanism B, the width of the arc-shaped protrusion B241 of the upper roller pressing die B24 is smaller than the width of the arc-shaped groove B141 of the lower roller pressing die B14. Along the forming direction, the width of the arc-shaped groove B141 of the lower roller pressing die B14 decreases sequentially and the depth increases sequentially, while the width of the arc-shaped protrusion B241 of the upper roller pressing die B24 decreases sequentially and the height of the arc-shaped protrusion B241 increases sequentially. Figure 4 This is an example diagram of the combination of the lower roller pressing die and the upper roller pressing die according to an embodiment of the present invention.

[0031] The longitudinal adjustment mechanism B3 includes a guide rail B31, a connecting seat B32, a first drive assembly B33, and a drive connecting block B34. The guide rail B31 is vertically mounted on the lower roller press frame B11. The connecting seat B32 is fixedly mounted on the top of the guide rail B31. The first drive assembly B33 is mounted on the bottom of the connecting seat B32. One end of the drive connecting block B34 is connected to the output end of the first drive assembly B33, and the other end of the drive connecting block B34 is sleeved on the guide rail B31. The drive connecting block B34 is fixedly connected to the upper roller press frame B21. When the first drive assembly B33 is working, the drive connecting block B34 moves longitudinally along the guide rail B31, synchronously driving the upper roller press assembly B2 to move longitudinally.

[0032] Figure 5 This is a structural example diagram of the transverse forming mechanism according to an embodiment of the present invention, as shown below. Figure 1 and Figure 5As shown, in this embodiment, the transverse forming mechanism C includes a power component C1, a transverse moving component C2, a longitudinal moving component C3, and a transverse rolling component C4. The transverse moving component C2 is connected to the output end of the power component C1. The longitudinal moving component C3 and the transverse rolling component C4 are arranged on the transverse moving component C2 from bottom to top. When the power component C1 is running, it drives the transverse moving component C2 to move, and simultaneously drives the longitudinal moving component C3 and the transverse rolling component C4 to move.

[0033] As an optional example, in this embodiment, the power assembly C1 includes a power motor C11, an input coupling C12, a split gearbox C13, and two output couplings C14. The power motor C11 is connected to the input shaft of the split gearbox C13 through the input coupling C12, and the two output couplings C14 are respectively connected to the output shaft of the split gearbox C13.

[0034] Figure 6 This is a cross-sectional structural example of a lateral movement component according to an embodiment of the present invention, such as... Figure 6 As shown, in this embodiment, the lateral movement component C2 includes a lead screw seat C21 and two lead screws C22 symmetrically arranged on the lead screw seat C21. A third bearing C23 is provided between the lead screw C22 and the lead screw seat C21. One end of the lead screw C22 is connected to the output coupling C14 of the power component C1. The sliding seat C24 is sleeved on the two lead screws C22. The sliding seat C24 is helically assembled with the lead screws C22. When the power motor C11 is running, it drives the two lead screws C22 to rotate, and synchronously drives the sliding seat C24 to move.

[0035] The longitudinal moving component C3 includes a second driving component C31 and a loading seat C32. The second driving component C31 is fixedly connected to the top of the sliding seat C24, and the loading seat C32 is connected to the output end of the second driving component C31.

[0036] Figure 7 This is a partial example diagram of a fire-resistant cable copper sheath forming apparatus according to an embodiment of the present invention, as shown below. Figure 1 , Figure 7 As shown, in this embodiment, the components below the loading seat C32 are arranged below the molding platform A. Correspondingly, multiple sets of sliding grooves A1 are provided on the molding platform A. The sliding grooves A1 are used for the movement of the output end of the second drive component C31.

[0037] It should be noted that in this embodiment, the first drive component B33 and the second drive component C31 can be either servo hydraulic cylinders with integrated pressure sensors or digital hydraulic cylinders. Servo hydraulic cylinders with integrated pressure sensors can achieve high-precision pressure control. By monitoring the internal pressure of the cylinder in real time through the sensor and feeding the signal back to the control system, the movement and pressure output of the cylinder can be precisely adjusted. Digital hydraulic cylinders with integrated pressure sensors can convert parameters such as cylinder movement and pressure into digital signals in real time. These signals can be precisely controlled by a computer or controller to achieve efficient motion configuration.

[0038] Figure 8 This is a structural example diagram of a transverse rolling assembly according to an embodiment of the present invention, as shown below. Figure 1 , Figure 5 and Figure 8 As shown, in this embodiment, the transverse roller pressing assembly C4 includes a transverse roller pressing frame C41, a transverse roller shaft C42, and a transverse roller pressing die C43. The transverse roller pressing frame C41 consists of a frame base C411 and a cylindrical portion C412 integrally connected to the frame base C411. The cylindrical portion C412 is radially provided with a plurality of first locking holes C413. The lower end of the transverse roller shaft C42, which has an overall T-shaped cross-section, is radially provided with a plurality of second locking holes C421. The lower end of the transverse roller shaft C42 is coaxially assembled inside the cylindrical portion C412. The horizontal roller pressing die C43 is coaxially sleeved on the outside of the horizontal roller shaft C42. A fourth bearing C44 is set between the upper end of the horizontal roller pressing die C43 and the horizontal roller shaft C42. A fifth bearing C45, a fifth locking nut C46 and a locking washer C47 are set from top to bottom between the horizontal roller pressing die C43 and the cylindrical part C412 to axially position the horizontal roller pressing die C43. The horizontal roller pressing die C43 is radially positioned by assembling the fasteners with the first locking hole C413 and the second locking hole C421.

[0039] Figure 9 This is a structural example diagram of a horizontal roller pressing die according to an embodiment of the present invention, as shown below. Figure 9As shown, in this embodiment, the horizontal roller pressing die C43, which is an integrally connected cylindrical part C431, a curved surface forming part C432, and a disc part C433 with progressively increasing diameters, is composed of three parts from top to bottom. A first assembly cavity C434 is provided on the inner side of the upper end of the cylindrical part C431, a second assembly cavity C435 is provided at the bottom of the disc part C433, and a third assembly cavity C436, extending from top to bottom, is provided through the center of the horizontal roller pressing die C43. The first assembly cavity C434 and the second assembly cavity C435 are used to assemble the fourth bearing C44 and the fifth bearing C45, respectively, and the third assembly cavity C436 is used to assemble the horizontal roller shaft C42. It should be noted that in this embodiment, the diameter of the curved surface forming part C432 gradually increases from top to bottom and transitions through continuous multi-segment curved surface extensions. Along the forming direction, the slope of the curved surface forming part C432 of the horizontal roller pressing die C43 increases sequentially.

[0040] Figure 10 This is a structural example diagram of a predetermined mechanism according to an embodiment of the present invention, such as... Figure 1 and Figure 10 As shown, in this embodiment, the pre-forming mechanism D includes a pre-forming base D1 and a pre-forming mold D2 fixedly assembled within the pre-forming base D1. As an optional example, in this embodiment, the pre-forming base D1 consists of a pre-forming base body D11 and a pre-forming mold loading part D12 integrally connected to the pre-forming base body D11. The pre-forming mold loading part D12 is generally a non-closed cylindrical shape, and one end of the pre-forming mold loading part D12 is securely connected to the outlet end of the pre-forming mold D2. It should be noted that in this embodiment, the pre-forming mold D2 is generally a non-closed cylindrical shape, and the cross-section of the pre-forming cavity D21 of the pre-forming mold D2 decreases sequentially from the inlet end to the outlet end.

[0041] Figure 11 This is a structural example diagram of the shaping mechanism according to an embodiment of the present invention, such as... Figure 1 and Figure 11 As shown, in this embodiment, the shaping mechanism E includes a shaping base E1 and a shaping mold E2 fixedly assembled within the shaping base E1. It should be noted that in this embodiment, the shaping base E1 consists of a shaping base body E11 and a shaping mold loading part E12 integrally connected to the shaping base body E11. The shaping mold loading part E12 is generally cylindrical, and one end of the shaping mold loading part E12 is securely connected to the outlet end of the shaping mold E2. In this embodiment, the shaping mold E2 is generally cylindrical, and the cross-section of the shaping cavity E21 of the shaping mold E2 decreases sequentially from the inlet end to the outlet end.

[0042] In practical applications, in this embodiment, a set of scanning and acquisition components F are respectively set before the first longitudinal forming mechanism, after the last transverse forming mechanism C, and after the shaping mechanism E.

[0043] The application principle of the fire-resistant cable copper sheath forming device in this embodiment is as follows: The metal strip enters through the device inlet and first passes through a set of scanning and acquisition components F. These components collect data such as the initial width and thickness of the strip and upload it to the control system. Based on this data, the control system calculates the initial position and pressure parameters of each longitudinal forming mechanism B and the transverse forming mechanism C, and instructs the first drive component B33 and the second drive component C31 to move, respectively driving the upper roller pressing component B2 and the transverse roller pressing component C4 to the appropriate positions.

[0044] The strip material sequentially passes through multiple longitudinal forming mechanisms B and transverse forming mechanisms C. In the longitudinal forming mechanism B, the upper roller die B24 cooperates with the lower roller die B14 to progressively roll-form the strip material longitudinally. The transverse forming mechanism C, via a power component C1, drives a transverse moving component C2, which in turn drives a transverse rolling component C4 to laterally roll-form the strip material, further shaping it. Specifically, the transverse rolling component C4 can be driven by a power motor C11 to rotate a lead screw C22, thereby causing the sliding seat C24 and the transverse rolling component C4 itself to make precise left and right displacements, achieving forming control in the width direction of the strip material.

[0045] During the molding process, the pressure sensors in the first drive assembly B33 and the second drive assembly C31 monitor the hydraulic cylinder pressure in real time. If the pressure is lower than the set value, the system automatically adjusts and records the data.

[0046] During operation, the scanning and acquisition component F, located in front of the pre-forming mechanism D, continuously detects whether the strip always passes through the center and monitors the pre-formed shape and radius in real time. If a deviation is detected, the system will feed back to the control system, where the longitudinal forming mechanism B and the transverse forming mechanism C will perform springback compensation to reduce forming errors.

[0047] The strip material is further compressed and shaped by the pre-forming mechanism D and the shaping mechanism E. The scanning and acquisition component F at the exit performs the final inspection on the finished product to determine whether its size and shape meet the requirements.

[0048] In practical applications, the fire-resistant cable copper sheath device of this embodiment, through comprehensive structural design, has the following beneficial technical effects: 1. Improve molding precision and product quality consistency Through the sequential coordinated action of multiple longitudinal forming mechanisms, transverse forming mechanisms, pre-forming mechanisms, and final forming mechanisms, the metal strip undergoes progressive, multi-directional precision rolling and shaping. The combined design of the longitudinal and transverse forming mechanisms enables precise plastic deformation of the strip in both length and width dimensions.

[0049] The scanning and acquisition components are installed at key stations before and after the forming line, enabling real-time scanning and acquisition of parameters such as the initial dimensions of the strip, the pre-formed shape, and the dimensions of the final product. This data is uploaded to the control system, allowing for real-time monitoring of the entire forming process. When a deviation is detected, a command is sent to the forward forming mechanism, where a servo or digital hydraulic cylinder with an integrated pressure sensor performs high-precision dynamic compensation adjustment. This effectively offsets errors caused by fluctuations in raw material dimensions or equipment operation, greatly reducing the overly high dependence on the precision of the raw material itself, thereby ensuring high consistency in the dimensions and high precision in the shape of the final product.

[0050] 2. Enhance production flexibility and adaptability The longitudinal adjustment mechanism can precisely control the longitudinal position of the upper roller pressing assembly, while the lateral and longitudinal movement components can control the lateral and longitudinal positions of the lateral roller pressing assembly, respectively. This multi-degree-of-freedom adjustment capability, combined with replaceable roller pressing dies, allows the same equipment to be quickly adjusted to adapt to the production of metal coatings of different specifications and sizes, reducing downtime and debugging workload required for product changeovers.

[0051] 3. Improve production efficiency and automation level The power unit drives two synchronous lead screws via a split gearbox, ensuring the synchronicity and stability of the transverse roller pressing assembly's movement. Combined with a scanning acquisition and closed-loop control system, an automated production process is achieved, from parameter acquisition and intelligent judgment to automatic adjustment. This not only reduces the tedious debugging process before production and the resulting material waste, but also reduces over-reliance on operator experience, ensuring the continuous, stable, and efficient operation of the production line.

[0052] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A metal sheath forming device for fire-resistant cables, characterized in that, In the fireproof cable metal sheath forming device, multiple longitudinal forming mechanisms, pre-forming mechanisms, and shaping mechanisms are sequentially distributed from one end to the other on the forming platform. Two transverse forming mechanisms are symmetrically arranged as a group and distributed on one side of each longitudinal forming mechanism. Two scanning and acquisition components are arranged as a group on the forming platform to scan and acquire forming parameters. The longitudinal forming mechanism includes a lower roller pressing component, two sets of longitudinal adjustment mechanisms symmetrically arranged on the lower roller pressing component, and an upper roller pressing component connected to the longitudinal adjustment mechanism. When the longitudinal adjustment mechanism is running, it drives the upper roller pressing component to move longitudinally above the lower roller pressing component. The transverse forming mechanism includes a power component, a transverse moving component connected to the output end of the power component, and a longitudinal moving component and a transverse roller pressing component arranged from bottom to top on the transverse moving component. When the power component is running, it drives the transverse moving component to move, thereby driving the longitudinal moving component and the transverse roller pressing component to move.

2. The fire-resistant cable metal sheath forming device according to claim 1, characterized in that, The lower roller pressing assembly includes two symmetrically arranged lower roller pressing frames and a lower roller shaft mounted on the lower roller pressing frames. First bearings are installed between the two ends of the lower roller shaft and the lower roller pressing frames. A lower roller pressing die is installed on the outer side of the center of the lower roller shaft. The lower roller pressing die and the lower roller shaft are radially fixed by a key joint. First locking nuts are installed on the outer side of the lower roller shaft at both ends of the lower roller pressing die, and second locking nuts are installed at both ends of the lower roller shaft. The upper roller pressing assembly includes two symmetrically arranged upper roller pressing frames and an upper roller shaft mounted on the upper roller pressing frames. Second bearings are installed between the two ends of the upper roller shaft and the upper roller pressing frames. An upper roller pressing die is installed on the outer side of the center of the upper roller shaft. The upper roller pressing die and the upper roller shaft are radially fixed by a key joint. Third locking nuts are installed on the outer side of the upper roller shaft at both ends of the upper roller pressing die, and fourth locking nuts are installed at both ends of the upper roller shaft.

3. The fire-resistant cable metal sheath forming device according to claim 2, characterized in that, The lower roller die, which is a rotating body, has an arc-shaped groove in the middle, and the upper roller die, which is also a rotating body, has an arc-shaped protrusion in the middle. In a longitudinal forming mechanism, the width of the arc-shaped protrusion of the upper roller die is smaller than the width of the arc-shaped groove of the lower roller die. Along the forming direction, the width of the arc-shaped groove of the lower roller die decreases and the depth increases, while the width of the arc-shaped protrusion of the upper roller die decreases and the height increases.

4. The fire-resistant cable metal sheath forming device according to claim 3, characterized in that, The longitudinal adjustment mechanism includes a guide rail, a connecting seat, a first drive assembly, and a drive connecting block. The guide rail is vertically mounted on the lower roller press frame, the connecting seat is fixedly mounted on the top of the guide rail, the first drive assembly is mounted on the bottom of the connecting seat, one end of the drive connecting block is connected to the output end of the first drive assembly, the other end of the drive connecting block is sleeved on the guide rail, and the drive connecting block is fixedly connected to the upper roller press frame. When the first drive assembly is working, the drive connecting block moves longitudinally along the guide rail, synchronously driving the upper roller press assembly to move longitudinally. The first drive assembly is a servo hydraulic cylinder with an integrated pressure sensor or a digital hydraulic cylinder.

5. The fire-resistant cable metal sheath forming device according to claim 1, characterized in that, The power assembly includes a power motor, an input coupling, a split gearbox, and two output couplings. The power motor is connected to the input shaft of the split gearbox via the input coupling, and the two output couplings are respectively connected to the output shafts of the split gearbox. The lateral movement assembly includes a lead screw seat and two lead screws symmetrically arranged on the lead screw seat. A third bearing is provided between the lead screws and the lead screw seat. One end of the lead screw is connected to the output coupling of the power assembly. A sliding seat is sleeved on the two lead screws. The sliding seat and the lead screws are helically assembled. When the power motor is running, it drives the two lead screws to rotate, synchronously driving the sliding seat to move.

6. The fire-resistant cable metal sheath forming device according to claim 5, characterized in that, The longitudinal movement component includes a second drive component and a loading seat. The second drive component is fixedly connected to the top of the sliding seat, and the loading seat is connected to the output end of the second drive component. The components below the loading seat are arranged below the forming platform. Multiple sets of sliding grooves are provided on the forming platform. The sliding grooves are used for the movement of the output end of the second drive component. The second drive component is a servo hydraulic cylinder with an integrated pressure sensor or a digital hydraulic cylinder.

7. The fire-resistant cable metal sheath forming device according to claim 6, characterized in that, The transverse roller pressing assembly includes a transverse roller pressing frame, a transverse roller shaft, and a transverse roller pressing die. The transverse roller pressing frame consists of a frame base and a cylindrical part integrally connected to the frame base. The cylindrical part has multiple first locking holes radially arranged. The lower end of the transverse roller shaft, which has an overall T-shaped cross-section, has multiple second locking holes radially arranged. The lower end of the transverse roller shaft is coaxially assembled inside the cylindrical part. The transverse roller pressing die is coaxially sleeved on the outside of the transverse roller shaft. A fourth bearing is arranged between the transverse roller pressing die and the upper end of the transverse roller shaft. A fifth bearing, a fifth locking nut, and a locking washer are arranged sequentially from top to bottom between the transverse roller pressing die and the cylindrical part. The transverse roller pressing die is radially positioned by assembling the locking parts with the first locking holes and the second locking holes.

8. The fire-resistant cable metal sheath forming device according to claim 7, characterized in that, The horizontal roller pressing die, which is a rotating body, consists of a cylindrical part, a curved surface forming part, and a disc part that are connected in one piece and whose diameters increase sequentially from top to bottom. The diameter of the curved surface forming part gradually increases from top to bottom and is extended and transitioned by continuous multi-segment curved surfaces. Along the forming direction, the slope of the curved surface forming part of the horizontal roller pressing die increases sequentially.

9. The fire-resistant cable metal sheath forming device according to claim 1, characterized in that, The pre-form mechanism includes a pre-form base and a pre-form mold fixedly assembled in the pre-form base. The pre-form base consists of a pre-form base body and a pre-form mold loading part integrally connected to the pre-form base body. The pre-form mold loading part is generally non-closed cylindrical. One end of the pre-form mold loading part is tightly connected to the outlet end of the pre-form mold. The pre-form mold is generally non-closed cylindrical. The cross-section of the pre-form cavity of the pre-form mold decreases from the inlet end to the outlet end.

10. The fire-resistant cable metal sheath forming device according to claim 1, characterized in that, The shaping mechanism includes a shaping base and a shaping mold fixedly assembled in the shaping base. The shaping base consists of a shaping base body and a shaping mold loading part integrally connected to the shaping base body. The shaping mold loading part is cylindrical in shape. One end of the shaping mold loading part is fastened to the outlet end of the shaping mold. The shaping mold is cylindrical in shape. The cross-section of the shaping cavity of the shaping mold decreases from the inlet end to the outlet end.

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