High-temperature-resistant halogen-free flame-retardant cable and preparation process thereof

Abstract

The present application relates to a kind of high-temperature-resistant halogen-free flame-retardant cable and its preparation process, to solve the technical problem that the strength of current processing flame-retardant cable is low and easy to deform, including cable main body, the cable main body is composed of cable outer layer, flame-retardant layer, first core and second core, wherein, second core is several, several second core is connected using untwisted twisting, the present application is twisted by setting twisting mechanism, since driven gear rotates when rotating, it makes the first core and second core installed in driving gear rotate and run twisted, then its surface is wrapped with flame-retardant layer and cable outer layer, that is, the production of cable is completed, by untwisted twisting of multiple second core and first core, the overall strength of the cable after processing is improved, avoid the situation that there is gap in the inside of the cable after processing, reduce the situation that the cable is deformed or damage insulation layer due to insufficient strength.

Description

Technical Field

[0001] This invention relates to the field of flame-retardant cable technology, and in particular to a high-temperature resistant halogen-free flame-retardant cable and its manufacturing process. Background Technology

[0002] Low-smoke halogen-free flame-retardant cables are widely used in important sectors and public places such as high-rise buildings, subways, power plants, nuclear power plants, and rail transit. When a fire occurs, the cables do not release corrosive gases when burning and have good light transmission, which greatly helps rescue work and can reduce casualties and property losses to a great extent.

[0003] Currently, in the production of flame-retardant cables, small wires are usually untwisted and twisted together to ensure that multiple small wires can be combined into multiple large wires, thereby ensuring the stability of current flow.

[0004] Existing flame-retardant cables only merge small wires during production, without untwisting the internal wires. This results in large, irregularly shaped gaps within the wires, leading to uneven stress distribution and increased risk of core deformation. Furthermore, the lack of untwisting compromises the strength of individual cores, making them susceptible to insulation damage due to deformation. Therefore, we propose a high-temperature resistant halogen-free flame-retardant cable and its manufacturing process. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art, adapt to practical needs, and provide a high-temperature halogen-free flame-retardant cable and its manufacturing process, so as to solve the technical problem that the flame-retardant cables currently produced have low strength and are prone to deformation.

[0006] To achieve the objective of this invention, the technical solution adopted by this invention is as follows: designing a high-temperature resistant halogen-free flame-retardant cable and its manufacturing process, including a cable body, wherein the cable body is composed of a cable outer layer, a flame-retardant layer, a first core and a second core;

[0007] Among them, there are several second cores, and these several second cores are connected by untwisting twisting method;

[0008] The first wire core is located in the center of several second wire cores;

[0009] The first and second cores are provided with a cable outer layer, and the cable outer layer is filled with a flame-retardant layer between the first and second cores.

[0010] A manufacturing process for a high-temperature resistant, halogen-free, flame-retardant cable:

[0011] The manufacturing process of the high-temperature resistant halogen-free flame-retardant cable is based on a device for manufacturing high-temperature resistant halogen-free flame-retardant cables. The device includes a processing mechanism and a stranding mechanism, and the stranding mechanism is slidably connected to the processing mechanism.

[0012] The processing mechanism includes a base connected to two sets of slide rails, and the top of the base is connected to a cable output assembly and a housing.

[0013] The hinge mechanism includes an adjusting base, a bracket mounted on the adjusting base, a driven gear, a drive assembly, and a control assembly connected to the drive assembly, wherein the driven gear meshes with the drive assembly;

[0014] The manufacturing process of the high-temperature resistant halogen-free flame-retardant cable includes the following steps:

[0015] S1. Install the multiple wire cores to be processed into the cable output assembly. After passing the wire cores to be processed through the cable output assembly, fix them respectively in the drive assembly. Start the twisting mechanism to perform untwisting twisting of the wire cores.

[0016] S2. During the twisting process of the wire core, the adjustment base needs to be activated so that the adjustment base moves along the slide rail while the wire core extending from the cable output assembly is continuously processed.

[0017] The lower structure of the preparation equipment includes two sets of slide rails, both sets of slide rails are tightly welded to the upper part of the equipment base, the cable output assembly is tightly welded to the upper part of the equipment base, the equipment shell is tightly welded to the upper part of the equipment base, and the equipment shell is located outside the cable output assembly;

[0018] The upper part of the adjustment base is fixedly connected to the bottom end of the bracket, and the top end of the bracket is fixedly connected to the protective shell. The driven gear and the drive assembly are both set inside the protective shell. There are two driven gears, and both driven gears are connected to the drive assembly. One driven gear is connected to two fans, and the other driven gear is connected to a motor. The control assembly is snapped into the drive assembly. The control assembly is connected to the exhaust port of one of the fans, and the exhaust port of the other fan is connected to the cooling assembly. The two fans are fixedly connected to the outside of the protective shell through the base plate.

[0019] The cooling component includes a connecting pipe, which is connected to several sealing covers, and one end of the connecting pipe is connected to one of the fans;

[0020] The control component includes a connecting shell, a sealing edge fixedly connected inside the connecting shell, the other side of the connecting shell being connected to an annular pipe, a conduit fixedly connected outside the annular pipe, the connecting shell being connected to another fan through the annular pipe and the conduit, and the connecting shell being snapped onto the outside of the drive component by the sealing edge;

[0021] The drive assembly includes a drive gear, a sealing groove on one side of the drive gear, several air inlets on one side of the drive gear, and a placement groove on one side of the drive gear. Several connecting blocks are fixedly connected in the placement groove. The air inlets are respectively connected to the connecting blocks. The other side of the connecting blocks is respectively connected to several elastic telescopic sleeves. An installation block is fixedly connected to the other end of the elastic telescopic sleeve. The placement groove is fixedly connected to a central block through a reinforcing plate. Several first installation grooves and one second installation groove are opened on the outside of the central block. Several installation blocks are located in the first installation groove and the second installation groove. One of the elastic telescopic sleeves is a multi-section elastic telescopic sleeve. The sealing edge is snapped into the sealing groove. The connecting shell is connected to the air inlets.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. The high-temperature halogen-free flame-retardant cable and its manufacturing process, by setting a stranding mechanism, the driven gear drives the driving gear to rotate when it rotates, so that the first and second cores installed in the driving gear will be stranded. Then, the flame-retardant layer and the outer layer of the cable are wrapped around its surface to complete the production of the cable. By un-twisting and stranding multiple second cores and first cores, the overall strength of the cable after processing is improved, and the occurrence of voids in the cable after processing is avoided, reducing the possibility of deformation or damage to the insulation layer due to insufficient strength.

[0024] 2. The high-temperature resistant halogen-free flame-retardant cable and its manufacturing process, by setting up a cooling component, a control component, and a drive component, allows the motor to drive one of the driven gears to rotate when the motor is running. This drives the other driven gear to rotate synchronously while simultaneously driving the driving gear. Due to the synchronous rotation of the other driven gear, the two fans operate synchronously, injecting gas into the connecting pipe and the conduit respectively. When the gas enters the connecting pipe, it is quickly discharged along the sealing cover, thus discharging the gas to the outside of the first and second cores, thereby cooling the first and second cores and preventing overheating during the untwisting and twisting of the first and second cores. When the gas enters the conduit, it is quickly injected into the elastic telescopic sleeve, causing the elastic telescopic sleeve to extend and push the mounting block to squeeze the first and second cores. After the first mounting groove and the second mounting groove are attached, the first and second cores are fixed. This gives the cable processing equipment an automatic fixing effect, reducing the difficulty of cable processing. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the cross-sectional structure of the cable body of the present invention;

[0027] Figure 3 This is a schematic diagram of the processing mechanism structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the cross-sectional structure of the protective shell of the present invention;

[0029] Figure 5 This is a schematic cross-sectional view of the control mechanism of the present invention;

[0030] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle;

[0031] Figure 7 This is a schematic diagram of the planar structure of the drive component of the present invention;

[0032] In the diagram: 1. Cable body; 2. Processing mechanism; 3. Stranding mechanism;

[0033] 101. Outer layer of cable; 102. Flame retardant layer; 103. First conductor; 104. Second conductor;

[0034] 201. Equipment base; 202. Slide rail; 203. Cable output assembly; 204. Equipment casing;

[0035] 301. Adjustable base; 302. Bracket; 303. Protective shell; 304. Driven gear; 305. Fan; 306. Cooling component; 307. Motor; 308. Control component; 309. Drive component;

[0036] 306-1, Connecting pipe; 306-2, Sealing cover;

[0037] 308-1, Connecting shell; 308-2, Sealing edge; 308-3, Annular tube; 308-4, Conduit;

[0038] 309-1, Drive gear; 309-2, Sealing groove; 309-3, Air inlet; 309-4, Placement groove; 309-5, Connecting block; 309-6, Elastic telescopic sleeve; 309-7, Mounting block; 309-8, First mounting groove; 309-9, Second mounting groove; 309-10, Center block. Detailed Implementation

[0039] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0040] Example 1: A high-temperature resistant, halogen-free, flame-retardant cable, see [link / reference] Figure 2As shown, it includes a cable body 1, which is composed of an outer cable layer 101, a flame-retardant layer 102, a first conductor 103, and a second conductor 104.

[0041] Among them, there are several second wire cores 104, and the several second wire cores 104 are connected by untwisting twisting method;

[0042] Among them, the first wire core 103 is located in the center of several second wire cores 104;

[0043] A cable outer layer 101 is provided outside the first core 103 and the second core 104, and the cable outer layer 101 is filled with a flame-retardant layer 102 between the first core 103 and the second core 104.

[0044] Example 2: A manufacturing process for a high-temperature resistant, halogen-free, flame-retardant cable, see [link / reference]. Figure 1 and Figure 3 As shown, the process for manufacturing high-temperature halogen-free flame-retardant cables is based on a device for manufacturing high-temperature halogen-free flame-retardant cables. The device includes a processing mechanism 2 and a stranding mechanism 3, with the stranding mechanism 3 slidably connected to the processing mechanism 2.

[0045] The processing mechanism 2 includes a base 201, which is connected to two sets of slide rails 202. The top of the base 201 is connected to the cable output assembly 203 and the equipment housing 204.

[0046] The hinge mechanism 3 includes an adjusting base 301, a bracket 302 disposed on the adjusting base 301, a driven gear 304, a drive assembly 309, and a control assembly 308 connected to the drive assembly 309, wherein the driven gear 304 meshes with the drive assembly 309;

[0047] The manufacturing process of high-temperature resistant halogen-free flame-retardant cables includes the following steps:

[0048] S1. Install the multiple wire cores to be processed into the cable output assembly 203. After passing the wire cores to be processed through the cable output assembly 203, fix them respectively in the drive assembly 309. Start the twisting mechanism 3 to perform untwisting twisting on the wire cores.

[0049] S2. As the wire core is twisted, the adjustment base 301 needs to be activated so that the adjustment base 301 moves along the slide rail 202 while the wire core extending from the cable output assembly 203 is continuously processed.

[0050] When the driven gear 304 rotates, it drives the driving gear 309-1 to rotate, causing the first core 103 and the second core 104 installed in the driving gear 309-1 to twist together. Then, the flame-retardant layer 102 and the outer cable layer 101 are wrapped around their surface to complete the cable production. By un-twisting and twisting multiple second cores 104 and first cores 103, the overall strength of the cable after processing is improved, avoiding the occurrence of voids inside the cable after processing, and reducing the possibility of deformation or damage to the insulation layer due to insufficient strength.

[0051] Example 3: Equipment for manufacturing high-temperature resistant halogen-free flame-retardant cables, see [link / reference]. Figures 4 to 7 As shown, there are two sets of slide rails 202, and both sets of slide rails 202 are tightly welded to the top of the equipment base 201. The cable output assembly 203 is tightly welded to the top of the equipment base 201, and the equipment housing 204 is tightly welded to the top of the equipment base 201. The equipment housing 204 is located outside the cable output assembly 203.

[0052] The upper part of the adjusting base 301 is fixedly connected to the bottom of the bracket 302, and the top of the bracket 302 is fixedly connected to the protective shell 303. The driven gear 304 and the drive component 309 are both set inside the protective shell 303. There are two driven gears 304, and both driven gears 304 are connected to the drive component 309. One driven gear 304 is connected to two fans 305, and the other driven gear 304 is connected to the motor 307. The control component 308 is snapped into the drive component 309. The control component 308 is connected to the exhaust port of one of the fans 305, and the exhaust port of the other fan 305 is connected to the cooling component 306. The two fans 305 are fixedly connected to the outside of the protective shell 303 through the base plate.

[0053] The cooling component 306 includes a connecting pipe 306-1, which is connected to several sealing covers 306-2, and one end of the connecting pipe 306-1 is connected to one of the fans 305.

[0054] The control assembly 308 includes a connecting shell 308-1, a sealing edge 308-2 fixedly connected inside the connecting shell 308-1, the other side of the connecting shell 308-1 being connected to an annular pipe 308-3, a conduit 308-4 fixedly connected outside the annular pipe 308-3, the connecting shell 308-1 being connected to another fan 305 through the annular pipe 308-3 and the conduit 308-4, and the connecting shell 308-1 being snapped onto the outside of the drive assembly 309 through the sealing edge 308-2;

[0055] When gas enters the connecting pipe 306-1, it is quickly discharged along the sealing cover 306-2, thereby discharging the gas to the outside of the first core 103 and the second core 104, thus cooling the first core 103 and the second core 104 and preventing overheating during the untwisting and twisting of the first core 103 and the second core 104. When the gas enters the conduit 308-4, the gas is quickly injected into the elastic telescopic sleeve 309-6, causing the elastic telescopic sleeve 309-6 to extend and push the mounting block 309-7 to squeeze the first core 103 and the second core 104. After the first mounting groove 309-8 and the second mounting groove 309-9 are fitted together, the first core 103 and the second core 104 are fixed, giving the cable processing equipment an automatic fixing effect and reducing the difficulty of cable processing.

[0056] The drive assembly 309 includes a drive gear 309-1. A sealing groove 309-2 is formed on one side of the drive gear 309-1. Several air inlets 309-3 are formed on one side of the drive gear 309-1. A placement groove 309-4 is formed on one side of the drive gear 309-1. Several connecting blocks 309-5 are fixedly connected within the placement groove 309-4. The air inlets 309-3 are respectively connected to the connecting blocks 309-5. The other side of the connecting blocks 309-5 is respectively connected to several elastic telescopic sleeves 309-6. An mounting block 309-7 is fixedly connected to the other end of each elastic telescopic sleeve 309-6. The placement groove 309-4 is fixed to the center block 309-10 via a reinforcing plate. The connection includes a central block 309-10 with several first mounting slots 309-8 and a second mounting slot 309-9. Several mounting blocks 309-7 are located within the first mounting slots 309-8 and the second mounting slots 309-9. One of the elastic telescopic sleeves 309-6 is a multi-section elastic telescopic sleeve. The sealing edge 308-2 is snapped into the sealing slot 309-2. The connecting shell 308-1 is connected to several air inlets 309-3. By setting the elastic telescopic sleeve 309-6 as a multi-section elastic telescopic sleeve, the moving distance of the mounting block 309-7 is extended, ensuring that the mounting block 309-7 can fix the first wire core 103 or the second wire core 104 in the second mounting slot 309-9.

[0057] Working principle: When in use, the wire cores to be processed into cables need to be inserted into the cable output assembly 203. The first wire core 103 and the second wire core 104 are gradually discharged through the cable output assembly 203. Then, the first wire core 103 and the second wire core 104 are respectively inserted into the second mounting slot 309-9 and the first mounting slot 309-8, and the motor 307 is started.

[0058] When motor 307 is running, it drives one of the driven gears 304 to rotate. This causes the driven gear 304 to simultaneously rotate the driving gear 309-1 and the other driven gear 304. Because the other driven gear 304 rotates synchronously, the two fans 305 operate synchronously, injecting gas into the connecting pipe 306-1 and the duct 308-4 respectively. When the gas enters the connecting pipe 306-1, it is quickly discharged along the sealing cover 306-2. The gas is discharged outside the first wire core 103 and the second wire core 104 to cool them down. When the gas enters the conduit 308-4, it is quickly injected into the elastic telescopic sleeve 309-6. This causes the elastic telescopic sleeve 309-6 to extend and push the mounting block 309-7 to squeeze the first wire core 103 and the second wire core 104. After the first mounting groove 309-8 and the second mounting groove 309-9 are fitted together, the first wire core 103 and the second wire core 104 are fixed.

[0059] When the driven gear 304 rotates, it drives the driving gear 309-1 to rotate, causing the first wire core 103 and the second wire core 104 installed in the driving gear 309-1 to twist together. Then, the flame-retardant layer 102 and the cable outer layer 101 are wrapped around their surfaces to complete the cable production.

[0060] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A manufacturing process for a high-temperature resistant, halogen-free, flame-retardant cable, characterized in that, The high-temperature halogen-free flame-retardant cable includes a cable body (1), which is composed of a cable outer layer (101), a flame-retardant layer (102), a first core (103), and a second core (104). Among them, there are several second cores (104), and the several second cores (104) are connected by untwisting twisting method; Among them, the first wire core (103) is located in the center of several second wire cores (104); A cable outer layer (101) is provided outside the first core (103) and the second core (104), and the cable outer layer (101) is filled with a flame-retardant layer (102) between the first core (103) and the second core (104); The manufacturing process of the high-temperature resistant halogen-free flame-retardant cable is based on a device for manufacturing high-temperature resistant halogen-free flame-retardant cables. The device includes a processing mechanism (2) and a stranding mechanism (3), and the stranding mechanism (3) is slidably connected to the processing mechanism (2). The processing mechanism (2) includes a device base (201), which is connected to two sets of slide rails (202). The top of the device base (201) is connected to a cable output assembly (203) and a device housing (204). The hinge mechanism (3) includes an adjusting base (301), a bracket (302) disposed on the adjusting base (301), a driven gear (304), a drive assembly (309), and a control assembly (308) connected to the drive assembly (309), wherein the driven gear (304) meshes with the drive assembly (309); The driven gear (304) and the drive assembly (309) are both located inside the protective shell (303). There are two driven gears (304), and both driven gears (304) are connected to the drive assembly (309). One driven gear (304) is connected to two fans (305), and the other driven gear (304) is connected to a motor (307). The control assembly (308) is snapped into the drive assembly (309). The control assembly (308) is connected to the exhaust port of one of the fans (305), and the exhaust port of the other fan (305) is connected to the cooling assembly (306). The two fans (305) are fixedly connected to the outside of the protective shell (303) through the base plate. The cooling component (306) includes a connecting pipe (306-1), which is connected to a plurality of sealing covers (306-2), and one end of the connecting pipe (306-1) is connected to one of the fans (305); The control component (308) includes a connecting shell (308-1), a sealing edge (308-2) is fixedly connected inside the connecting shell (308-1), the other side of the connecting shell (308-1) is connected to an annular pipe (308-3), a conduit (308-4) is fixedly connected outside the annular pipe (308-3), the connecting shell (308-1) is connected to another fan (305) through the annular pipe (308-3) and the conduit (308-4), and the connecting shell (308-1) is snapped onto the outside of the drive component (309) by the sealing edge (308-2); The drive assembly (309) includes a drive gear (309-1). A sealing groove (309-2) is provided on one side of the drive gear (309-1). Several air inlets (309-3) are provided on one side of the drive gear (309-1). A placement groove (309-4) is provided on one side of the drive gear (309-1). Several connecting blocks (309-5) are fixedly connected within the placement groove (309-4). The air inlets (309-3) are respectively connected to the connecting blocks (309-5). The other side of the connecting blocks (309-5) is respectively connected to several elastic telescopic sleeves (309-6). The other end of 09-6 is fixedly connected to an installation block (309-7). The placement groove (309-4) is fixedly connected to the center block (309-10) through a reinforcing plate. The center block (309-10) has several first installation grooves (309-8) and a second installation groove (309-9) on its outside. Several installation blocks (309-7) are located in the first installation groove (309-8) and the second installation groove (309-9). One of the elastic telescopic sleeves (309-6) is a multi-section elastic telescopic sleeve. The sealing edge (308-2) is snapped into the sealing groove (309-2). The connecting shell (308-1) is connected to several air inlets (309-3). The manufacturing process of the high-temperature resistant halogen-free flame-retardant cable includes the following steps: S1. Install the multiple wire cores to be processed into the cable output assembly (203), pass the wire cores to be processed through the cable output assembly (203) and fix them in the drive assembly (309) respectively, start the twisting mechanism (3) to untwist and twist the wire cores; S2. As the core stranding process proceeds, the adjustment base (301) needs to be activated so that the adjustment base (301) moves along the slide rail (202) while the core strand of the cable output assembly (203) is continuously processed.

2. The manufacturing process of the high-temperature resistant halogen-free flame-retardant cable as described in claim 1, characterized in that, The number of slide rails (202) is two sets, and both sets of slide rails (202) are tightly welded above the equipment base (201). The cable output assembly (203) is tightly welded above the equipment base (201). The equipment housing (204) is tightly welded above the equipment base (201). The equipment housing (204) is located outside the cable output assembly (203).

3. The manufacturing process of the high-temperature resistant halogen-free flame-retardant cable as described in claim 2, characterized in that, The upper part of the adjustment base (301) is fixedly connected to the bottom end of the bracket (302), and the top end of the bracket (302) is fixedly connected to the protective shell (303).

Images