CN112885508B - Fire-resistant polyvinyl chloride insulated cable and cladding device of production usefulness thereof - Google Patents
Fire-resistant polyvinyl chloride insulated cable and cladding device of production usefulness thereof Download PDFInfo
- Publication number
- CN112885508B CN112885508B CN202110180617.6A CN202110180617A CN112885508B CN 112885508 B CN112885508 B CN 112885508B CN 202110180617 A CN202110180617 A CN 202110180617A CN 112885508 B CN112885508 B CN 112885508B
- Authority
- CN
- China
- Prior art keywords
- forming
- plate
- roller body
- hole
- fire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/226—Helicoidally wound metal wires or tapes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention relates to a fire-resistant polyvinyl chloride insulated cable and a cladding device for producing the same, wherein the cladding device comprises a wire core and a protective layer, the cladding device for producing the fire-resistant polyvinyl chloride insulated cable comprises an arc plate forming part and a circular tube forming part, the arc plate forming part comprises a base station, a forming mechanism and a pressing mechanism, and the circular tube forming part is arranged on the right side of the arc plate forming part. The invention provides a fire-resistant polyvinyl chloride insulated cable and a coating device for producing the same, aiming at solving the problems that the fire-resistant cable has poor fire-resistant effect, the surface of an aluminum strip has indentations when the aluminum strip is formed, cables with different diameters are difficult to adapt to aluminum strips with different widths, and the outer wall of the cable is easy to damage when the cable is extruded.
Description
Technical Field
The invention relates to the technical field of cable production, in particular to a fire-resistant polyvinyl chloride insulated cable and a coating device for production thereof.
Background
Cables are generally rope-like cables made by stranding several or groups of conductors (at least two in each group), each group being insulated from each other and often twisted around a center, the entire outer surface being coated with a highly insulating coating. The cable has the characteristics of internal electrification and external insulation, the fire-resistant cable is a cable capable of keeping safe operation for a certain time under the condition of flame combustion, and the fire-resistant cable is widely applied to places related to fire safety and fire-fighting and life saving, such as high-rise buildings, underground railways, underground streets, large-scale power stations, important industrial and mining enterprises and the like.
The currently used fire-resistant cable uses a fire-resistant mica tape or a glass fiber filler as a fire-resistant layer, the structure is single, oxygen cannot be completely isolated, when the fire-resistant cable is in fire, the fire-resistant cable is difficult to keep normal use for a long time under the condition of sufficient oxygen, the fire-resistant grade is low, in addition, in order to enable the cable to have better fire-resistant effect, the steel tape or the aluminum tape is used as an armor layer for the cable, the sheath covering device for producing the fire-resistant cable for the oil well, which is published under the number CN209343860U, mentions that the aluminum tape for covering the cable needs to be extruded into an arc-shaped aluminum tape by an extrusion wheel on an aluminum tape winding mechanism, then the cable without the armor layer needs to be extruded into the arc-shaped aluminum tape by an extrusion mechanism, but the extrusion wheel easily causes indentation on the surface of the aluminum tape when the aluminum tape is extruded, in addition, because of the specification limitation of an extrusion groove, the cables with different diameters are difficult to adapt to aluminum tapes with different widths, when the extrusion mechanism extrudes the uncoated cable, the outer wall of the uncoated cable is easily damaged, and the product quality is influenced.
Disclosure of Invention
The invention provides a fire-resistant polyvinyl chloride insulated cable and a coating device for producing the same, aiming at solving the problems that the fire-resistant cable has poor fire-resistant effect, the surface of an aluminum strip has indentations when the aluminum strip is formed, cables with different diameters are difficult to adapt to aluminum strips with different widths, and the outer wall of the cable is easy to damage when the cable is extruded.
In order to solve the problems, the technical scheme of the invention is as follows:
a fire-resistant polyvinyl chloride insulated cable comprises a wire core and a protective layer;
the cable core comprises three cable cores, each cable core is identical in structure, the cable cores are sequentially provided with a conductor, an insulating layer and a shielding layer from inside to outside, the insulating layer is a layered structure formed by a fire-resistant mica tape wrapped on the outer wall of the conductor, the shielding layer is a layered structure formed by a semiconductor paper tape wrapped outside the insulating layer, the shielding layers on every two adjacent cable cores are in contact with each other, the outer parts of the three cable cores are provided with a protective layer wrapping the three cable cores inside together, the protective layer comprises a first protective layer and a second protective layer, the first protective layer sequentially comprises a first wrapping layer, an oxygen isolating layer and a second wrapping layer from inside to outside, the first wrapping layer is wrapped outside the three cable cores, the outer parts of the three cable cores and the first wrapping layer between the inner walls of the wrapping layers and the three cable cores are all filled with filling layers, and the filling layers are columnar bodies formed by flame-retardant rock wool ropes, the first wrapping layer is externally extruded with an oxygen separation layer, the oxygen separation layer is of a tubular structure made of ceramic low-smoke halogen-free polyolefin, the oxygen separation layer is externally wrapped with a second wrapping layer, the first wrapping layer and the second wrapping layer are of a layered structure formed by wrapping glass fiber tapes, the second protective layer is arranged outside the first protective layer, the second protective layer sequentially comprises an inner liner, an armor layer and an outer sheath from inside to outside, the inner liner is extruded outside the second wrapping layer, the armor layer is wrapped outside the inner liner, the armor layer is a cylindrical body made of aluminum tapes, the outer sheath is extruded outside the armor layer, and the inner liner and the outer sheath are both tubular bodies made of polyvinyl chloride;
a cladding device for producing a fire-resistant polyvinyl chloride insulated cable comprises an arc plate forming part and a circular tube forming part;
the arc plate forming part comprises a base station, a forming mechanism and a pressing mechanism, the base station comprises a bearing plate and support columns, the bearing plate is a rectangular plate body which is horizontally arranged, a rectangular through hole which penetrates through the upper surface and the lower surface of the bearing plate is formed in the middle of the bearing plate, a first vertical plate and a second vertical plate are vertically arranged in the middle of the front end and the middle of the rear end of the bottom surface of the bearing plate respectively, a plurality of first threaded rods which are arranged at intervals along the width direction of the bearing plate are arranged at the left end and the right end of the bearing plate respectively, one end of each first threaded rod is connected with the bearing plate, the other end faces outwards, and the support columns are arranged at the positions, close to the four corners, of the bottom surface of the bearing plate;
the forming mechanism is arranged on the base station and comprises a support frame and forming columns, the support frame comprises a left frame body and a right frame body which are identical in structure size, the left frame body and the right frame body are respectively arranged at the left end and the right end of the bearing plate and are in a bilateral symmetry state, the left frame body comprises an adjusting plate, a front bearing rod and a rear bearing rod, the front bearing rod and the rear bearing rod are square rod bodies, the adjusting plate is a vertically arranged rectangular plate body, a plurality of n-shaped grooves which penetrate through the left side wall and the right side wall of the adjusting plate, are downward in opening and correspond to first threaded rods at the left end of the bearing plate are arranged on the adjusting plate at intervals, the right side surface of the adjusting plate is attached to the left end surface of the bearing plate, the end part of each first threaded rod on the left end surface of the bearing plate penetrates through the corresponding n-shaped groove and is positioned on the left side of the adjusting plate, and each first threaded rod on the left side of the adjusting plate is rotatably provided with a left limit nut, bearing rod and back bearing rod before both ends are vertical respectively to be provided with around the regulating plate top surface, the upper end of preceding bearing rod and back bearing rod is vertical respectively and is provided with shape size homogeneous phase's second threaded rod and third threaded rod, the laminating of regulating plate left surface and the loading board right-hand member face on the right side support body, every first threaded rod tip on the loading board right-hand member face all passes corresponding n type groove and is located the regulating plate right side on the right side support body, all be equipped with right stop nut on every first threaded rod on the regulating plate right side on the right side support body, be provided with the shaping post between left side support body and the right side support body upper end, the shaping post is the cylinder that sets up in the loading board top along loading board length direction, be provided with the bullport in the shaping post, the bullport includes straight hole and inclined hole, straight hole sets up in shaping post upper portion, straight hole left end runs through shaping post left end face, There is the interval between right-hand member and the shaping post right-hand member face, the inclined hole is located the shaping post on straight hole right side, inclined hole left end intercommunication straight hole right-hand member, right-hand member downward sloping run through shaping post right-hand member face lower part, both ends level respectively around the shaping post perisporium are provided with preceding connecting plate and back connecting plate that the structure size is the samely, symmetrical state around preceding connecting plate and the back connecting plate are, the left part and the right part of preceding connecting plate are provided with the bar through-hole along preceding connecting plate width direction respectively, two the bar through-hole corresponds from top to bottom with the second threaded rod on left support body, the right support body respectively, the second threaded rod is the round bar body that the diameter is less than bar through-hole width, and the distance between the preceding carrier bar left and right sides on left support body, the right support body is all greater than the width that corresponds the bar through-hole, the trailing flank middle part of preceding connecting plate is provided with the inside sunken, The upper end and the lower end of the U-shaped groove penetrate through the upper surface and the lower surface of the front connecting plate respectively, the distance between the left side surface and the right side surface of a rear bearing rod on the left frame body and the right frame body is larger than the width of a strip-shaped through hole on the rear connecting plate, the end parts of second threaded rods on the left frame body and the right frame body penetrate through corresponding strip-shaped through holes on the front connecting plate respectively and are positioned on the upper side of the front connecting plate, a first fixing nut is screwed on a second threaded rod on the upper side of the front connecting plate, the end parts of third threaded rods on the left frame body and the right frame body penetrate through corresponding strip-shaped through holes on the rear connecting plate respectively and are positioned on the upper side of the rear connecting plate, and a second fixing nut is screwed on a third threaded rod on the upper side of the rear connecting plate;
the pressing mechanism is arranged in the middle of the bottom surface of the bearing plate and comprises a rotating shaft and a rotating disc, the front end of the rotating shaft is movably connected to the rear side surface of the first vertical plate, the rear end of the rotating shaft penetrates through the second vertical plate, a motor is arranged on the rear side of the base station, the rear end of the rotating shaft is connected with the output end of the motor, the rotating disc comprises a first rotating disc and a second rotating disc which are identical in structure and size, the first rotating disc is a circular disc body provided with a circular through hole at the circle center, the first rotating disc and the second rotating disc are sleeved on the peripheral wall of the rotating shaft between the first vertical plate and the second vertical plate through the circular through hole, the rear part of the upper end of the first rotating disc, penetrating through the rectangular through hole, is positioned on the rear side of the lower part of the forming column and vertically corresponds to a U-shaped groove on the rear connecting plate, an elastic tube is sleeved outside the rotating shaft between the first rotating disc and the second rotating disc, two ends of the elastic tube are connected to opposite side edges of the first rotating disc and the second rotating disc to form a hollow carrier roller-shaped structure, and the upper part of the outer peripheral wall of the elastic tube is in contact with the lower part of the peripheral wall of the forming column to enable the upper part of the outer peripheral wall of the elastic tube to be elastically deformed into an arc shape protruding downwards;
the circular tube forming part is arranged on the right side of the arc plate forming part.
Further, the rectangular through hole is arranged along the length direction of the bearing plate, and the length of the rectangular through hole is larger than the diameter of the first rotary table.
Further, the distance between the front end of the front connecting plate and the rear end of the rear connecting plate is larger than the width of the left frame body.
Furthermore, the forming column is a columnar body made of steel, the distance between the front end of the peripheral wall of the forming column and the front end of the bearing plate is equal to the distance between the rear end of the peripheral wall of the forming column and the rear end of the bearing plate, and the first rotary disc and the second rotary disc are symmetrical front and back along the vertical center of the forming column.
Furthermore, the straight holes and the inclined holes are all round through holes, and the diameters of the straight holes and the diameters of the inclined holes are the same.
Further, the elastic barrel is a barrel body made of polyurethane and having the same diameter as the first rotating disc.
Further, a bearing column is arranged on the bottom surface of the motor.
Furthermore, the specification of the forming columns is multiple, the structural sizes of the front connecting plates and the rear connecting plates of the forming columns are the same, the shapes of the forming columns are the same, the diameters of the guide holes in the forming columns are different, the diameters of the forming columns are different, and the ratio of the diameter of the guide hole in each forming column to the diameter of the forming column is equal.
Furthermore, the round tube forming part is a round tube forming roller machine, or the round tube forming part comprises a bearing table and a plurality of groups of forming rollers, the left side of the bearing table is connected with a support column at the right end of the bottom surface of the bearing plate, a space is arranged between the top surface of the bearing table and the top end of the bearing plate, the plurality of groups of forming rollers are arranged on the top surface of the bearing table from left to right, each group of forming rollers comprises a front roller body and a rear roller body which are vertical, the centers of the bottoms of the front roller body and the rear roller body are connected with a vertical downward rotating rod, the lower end of each rotating rod is detachably connected with the top surface of the bearing table, the rotating rods are movably connected with the top surface of the bearing table, the front roller body and the rear roller body are identical in structural size, annular grooves which are sunken towards the central axis of the front roller body and have outward openings are arranged on the peripheral wall of the front roller body, and the upper and lower ends of the annular grooves are respectively flush with the upper and lower ends of the front roller body, the annular grooves on the peripheral walls of the front roller body and the rear roller body form circular through holes at the contact parts of the front roller body and the rear roller body, the heights of the front roller body and the rear roller body on the left forming roller in each two adjacent groups of forming rollers are greater than the heights of the front roller body and the rear roller body on the right forming roller, the left ends of the top surfaces and the bottom surfaces of the front roller body and the rear roller body on the right forming roller in each two adjacent groups of forming rollers are respectively close to the upper part and the lower part of the right peripheral wall of the front roller body and the rear roller body on the left forming roller, the heights of the rotating rods on the multiple groups of forming rollers are sequentially increased from left to right, the diameters of the circular through holes formed by the front roller body and the rear roller body on the multiple groups of forming rollers are sequentially reduced from left to right, the forming roller at the leftmost end in the multiple groups of forming rollers is close to the right side of the forming column, and the inner bottoms of the circular through holes formed by the front roller body and the rear roller body at the leftmost end are lower than or flush with the top surface of the bearing plate, the circle centers of circular through holes formed by the front roller bodies and the rear roller bodies on the multiple groups of forming rollers are all on the same axis.
Through the technical scheme, the invention has the beneficial effects that:
1. when the cable is used, the insulating layer has an insulating effect and can improve a fire-resistant effect, and when the oxygen isolating layer between the first wrapping layer and the second wrapping layer is subjected to flame combustion, a compact oxygen isolating layer can be formed, oxygen can be isolated, the wire core can be protected, and the fire-resistant effect of the cable is further improved.
2. When the invention is used, a cable which is not coated with an armor layer penetrates into a forming column through the left end of a straight hole and then penetrates out of the forming column through the right end of an inclined hole, an aluminum tape penetrates out from the left to the right through the space between the upper part of an elastic cylinder and the lower end of the peripheral wall of the forming column from the left to the right, a motor is started in the process that the aluminum tape and the cable both move from the left to the right through a traction mechanism, the motor drives a rotating shaft to rotate clockwise, a first rotating disk and a second rotating disk rotate clockwise along with the rotating shaft, the elastic cylinder rotates clockwise along with the first rotating disk and the second rotating disk, the aluminum tape is upwards jacked through the upper part of the elastic cylinder, the top surface of the aluminum tape is attached to the lower part of the peripheral wall of the forming column to form the aluminum tape with radian in the jacked process, the forming column with different diameters can be replaced according to different widths of the aluminum tapes, the first fixing nut and the second fixing nut are loosened, the distances from the front end and the rear end of the forming column with different diameters to the first rotating disk and the second rotating disk are equal, the first fixing nut and the second fixing nut are screwed tightly, the left frame body and the right frame body can be moved up and down by loosening the left limiting nut and the right limiting nut, the left frame body and the right frame body are fixed by screwing the left limiting nut and the right limiting nut, so as to adjust the joint degree of the forming columns with different diameters and the elastic cylinder, in the process of downward movement of the forming columns, the first rotary table and the second rotary table respectively penetrate through U-shaped grooves on the front connecting plate and the rear connecting plate from bottom to top, the lower parts of the peripheral walls of the forming columns with different diameters and the upper parts of the elastic cylinder are ensured to be always jointed, and further, an aluminum belt between the forming columns and the elastic cylinder is completely jointed with the lower parts of the peripheral walls of the forming columns for forming, the left end of an inclined hole of the invention is communicated with the right end of a straight hole, the inclined hole penetrates through the lower parts of the right end of the forming columns in a downward inclination way, a cable which is not coated with an armor layer penetrates through the inclined hole and then enters an aluminum belt with a certain radian, and the cable and the aluminum belt which is bent into an arc plate simultaneously enters a round pipe from left to right for coating, or the cable and the aluminum belt bent into the arc plate simultaneously enter the circular through holes on the multiple groups of forming rollers from left to right, the diameter of the circular through hole formed by the front roller body and the rear roller body on the multiple groups of forming rollers is sequentially reduced from left to right, the arc plate is gradually coated on the cable under the extrusion of the forming rollers, and the forming rollers on the right parts of the multiple groups of forming rollers can be disassembled according to the increase of the diameter of the cable.
Drawings
FIG. 1 is a longitudinal cross-sectional view of a fire-resistant polyvinyl chloride insulated cable of the present invention;
FIG. 2 is a front view of the covering device for producing fire-resistant polyvinyl chloride insulated cables of the present invention;
FIG. 3 is a left side view of the arc plate forming section of the present invention;
FIG. 4 is a top view of the carrier plate of the present invention;
FIG. 5 is a schematic structural view of the forming mechanism of the present invention;
FIG. 6 is a longitudinal cross-sectional view of a forming column of the present invention;
FIG. 7 is a plan view of a round tube molding section of the present invention;
fig. 8 is a left side view of the front roller body and the rear roller body on the circular tube molding section of the present invention.
The reference numbers in the drawings are as follows: 1 is an inner liner layer, 2 is a second wrapping layer, 3 is an oxygen isolating layer, 4 is a first wrapping layer, 5 is a filling layer, 6 is a shielding layer, 7 is an insulating layer, 8 is a conductor, 10 is an armor layer, 12 is an outer sheath, 13 is a supporting column, 14 is an adjusting plate, 15 is a left limit nut, 16 is a first threaded rod, 17 is a front bearing rod, 18 is a front connecting plate, 19 is a forming column, 20 is a right limit nut, 21 is a second threaded rod, 22 is a first vertical plate, 23 is a first rotary plate, 24 is a bearing column, 25 is a second rotary plate, 26 is a bearing plate, 27 is a motor, 28 is a rotating shaft, 29 is a rear bearing rod, 30 is a rear connecting plate, 31 is a straight hole, 32 is a first fixing nut, 33 is an n-shaped groove, 34 is an elastic cylinder, 35 is a third through hole, 36 is a rectangular through hole, 37 is an inclined hole, 38 is a second fixing nut, 39 is a U-shaped groove, 40 is a strip-shaped through hole, 41 is a front threaded rod, 42 is a ring groove, 43 is a rotating rod, 44 is a bearing platform, and 45 is a rear roller body.
Detailed Description
The invention is further described with reference to the following figures and detailed description:
as shown in fig. 1 to 8, a fire-resistant polyvinyl chloride insulated cable includes a core and a protective layer;
the cable core comprises three cable cores, the cable cores are of the same structure, the cable cores are sequentially provided with a conductor 8, an insulating layer 7 and a shielding layer 6 from inside to outside, the insulating layer 7 is of a layered structure formed by a fire-resistant mica tape wrapped on the outer wall of the conductor 8, the shielding layer 6 is of a layered structure formed by a semiconductor paper tape wrapped outside the insulating layer 7, the shielding layers 6 on every two adjacent cable cores are in contact, the outside of the three cable cores is provided with a protective layer for wrapping the three cable cores inside together, the protective layer comprises a first protective layer and a second protective layer, the first protective layer sequentially comprises a first wrapping layer 4, an oxygen isolating layer 3 and a second wrapping layer 2 from inside to outside, the first wrapping layer 4 is wrapped outside the three cable cores, the outside of the three cable cores and the first wrapping layer 4 are filled with filling layers 5 between the cable cores, the packing layer 5 is a columnar body formed by flame-retardant rock wool ropes, the first wrapping layer 4 is externally extruded with an oxygen isolating layer 3, the oxygen isolating layer 3 is a tubular structure made of ceramic low-smoke halogen-free polyolefin, the oxygen isolating layer 3 is externally wrapped with a second wrapping layer 2, the first wrapping layer 4 and the second wrapping layer 2 are both of a layered structure formed by wrapping glass fiber belts, the second protective layer is arranged outside the first protective layer, the second protective layer sequentially comprises an inner liner layer 1, an armor layer 10 and an outer sheath 12 from inside to outside, the inner liner layer 1 is extruded outside the second wrapping layer 2, the armor layer 10 is coated outside the inner liner 1, the armor layer 10 is a tubular body made of aluminum belts, the outer sheath 12 is extruded outside the armor layer 10, and the inner liner 1 and the outer sheath 12 are both tubular bodies made of polyvinyl chloride;
a cladding device for producing a fire-resistant polyvinyl chloride insulated cable comprises an arc plate forming part and a circular tube forming part;
the arc plate forming part comprises a base station, a forming mechanism and a pressing mechanism, the base station comprises a bearing plate 26 and supporting columns 13, the bearing plate 26 is a horizontally arranged rectangular plate, a rectangular through hole 36 penetrating through the upper surface and the lower surface of the bearing plate 26 is formed in the middle of the bearing plate 26, a first vertical plate 22 and a second vertical plate are vertically arranged in the middle of the front end and the middle of the rear end of the bottom surface of the bearing plate 26 respectively, a plurality of first threaded rods 16 arranged at intervals along the width direction of the bearing plate 26 are arranged at the left end and the right end of the bearing plate 26, one end of each first threaded rod 16 is connected with the bearing plate 26, the other end faces outwards, and the supporting columns 13 are arranged at the positions, close to the four corners, of the bottom surface of the bearing plate 26;
the forming mechanism is arranged on the base station, the forming mechanism comprises a support frame and forming columns 19, the support frame comprises a left support body and a right support body which are identical in structure size, the left support body and the right support body are respectively arranged at the left end and the right end of the bearing plate 26 and are in a bilateral symmetry state, the left support body comprises an adjusting plate 14, a front bearing rod 17 and a rear bearing rod 29, the front bearing rod 17 and the rear bearing rod 29 are square rod bodies, the adjusting plate 14 is a vertically arranged rectangular plate body, a plurality of n-shaped grooves 33 which penetrate through the left side wall and the right side wall of the adjusting plate 14, have downward openings and correspond to first threaded rods 16 at the left end of the bearing plate 26 are arranged on the adjusting plate 14 at intervals, the right side face of the adjusting plate 14 is attached to the left end face of the bearing plate 26, and the end portion of each first threaded rod 16 on the left end face, a left limiting nut 15 is screwed on each first threaded rod 16 on the left side of the adjusting plate 14, a front bearing rod 17 and a rear bearing rod 29 are vertically arranged at the front end and the rear end of the top surface of the adjusting plate 14 respectively, a second threaded rod 21 and a third threaded rod 35 which are identical in shape and size are vertically arranged at the upper ends of the front bearing rod 17 and the rear bearing rod 29 respectively, the left side surface of the adjusting plate 14 on the right frame body is attached to the right end surface of the bearing plate 26, the end part of each first threaded rod 16 on the right end surface of the bearing plate 26 penetrates through the corresponding n-shaped groove 33 to be positioned on the right side of the adjusting plate 14 on the right frame body, a right limiting nut 20 is screwed on each first threaded rod 16 on the right side of the adjusting plate 14 on the right frame body, a forming column 19 is arranged between the upper ends of the left frame body and the right frame body, and the forming column 19 is a cylinder which is arranged above the bearing plate 26 along the length direction of the bearing plate 26, the forming column 19 is internally provided with a guide hole, the guide hole comprises a straight hole 31 and an inclined hole 37, the straight hole 31 is arranged in the upper part of the forming column 19, the left end of the straight hole 31 penetrates through the left end surface and the right end surface of the forming column 19, a space is reserved between the left end surface and the right end surface of the forming column 19, the inclined hole 37 is positioned in the forming column 19 on the right side of the straight hole 31, the left end of the inclined hole 37 is communicated with the right end of the straight hole 31, the right end of the straight hole is downwards inclined to penetrate through the lower part of the right end surface of the forming column 19, the front end and the rear end of the peripheral wall of the forming column 19 are respectively and horizontally provided with a front connecting plate 18 and a rear connecting plate 30 which have the same structure size, the front connecting plate 18 and the rear connecting plate 30 are in a front-back symmetrical state, the left part and the right part of the front connecting plate 18 are respectively provided with strip-shaped through holes 40 which vertically correspond to the second threaded rods 21 on the left frame body and the right frame body, the second threaded rod 21 is a round rod body with the diameter smaller than the width of the strip-shaped through hole, the distance between the left side surface and the right side surface of the front bearing rod on the left frame body and the right frame body is larger than the width of the corresponding strip-shaped through hole, the middle part of the rear side surface of the front connecting plate 18 is provided with a U-shaped groove 39 which is sunken inside the front connecting plate 18 and has a backward opening, the upper end and the lower end of the U-shaped groove 39 respectively penetrate through the upper surface and the lower surface of the front connecting plate 18, the distance between the left side surface and the right side surface of the rear bearing rod on the left frame body and the right frame body is larger than the width of the strip-shaped through hole on the rear connecting plate 30, the end parts of the second threaded rods 21 on the left frame body and the right frame body respectively penetrate through the corresponding strip-shaped through holes 40 on the front connecting plate 18 and are positioned on the upper side of the front connecting plate 18, the first fixing nut 32 is screwed on the second threaded rod 21 on the upper side of the front connecting plate 18, the end parts of the third threaded rods 35 on the left frame body and the right frame body respectively penetrate through hole and the corresponding strip-shaped through hole 40 on the rear connecting plate 30 and are positioned on the upper side of the rear connecting plate 30, a second fixing nut 38 is screwed on the third threaded rod 35 at the upper side of the rear connecting plate 30;
the pressing mechanism is arranged in the middle of the bottom surface of the bearing plate 26, the pressing mechanism comprises a rotating shaft 28 and a rotating disc, the front end of the rotating shaft 28 is movably connected to the rear side surface of the first vertical plate 22, the rear end of the rotating shaft passes through the second vertical plate, the rear side of the base station is provided with a motor 27, the rear end of the rotating shaft 28 is connected with the output end of the motor 27, the rotating disc comprises a first rotating disc 23 and a second rotating disc 25 which are identical in structure and size, the first rotating disc 23 is a circular disc body provided with a circular through hole at the circle center, the first rotating disc 23 and the second rotating disc 25 are both sleeved on the peripheral wall of the rotating shaft 28 between the first vertical plate 22 and the second vertical plate through the circular through hole, the upper end of the first rotating disc 23 passes through the rear part of the rectangular through hole 36 and is positioned on the rear side of the lower part of the forming column 19 and vertically corresponds to the U-shaped groove 39 on the rear connecting plate 30, an elastic tube 34 is sleeved outside the rotating shaft between the first rotating disc 23 and the second rotating disc 25, two ends of the elastic tube 34 are connected to opposite side edges of the first rotating disc 23 and the second rotating disc 25 to form a hollow carrier roller-shaped structure, and the upper part of the peripheral wall of the elastic tube 34 is in contact with the lower part of the peripheral wall of the forming column to make the upper part of the peripheral wall of the elastic tube 34 elastically deformed into a downward convex arc shape;
the circular tube forming part is arranged on the right side of the arc plate forming part.
The rectangular through hole 36 is arranged along the length direction of the bearing plate 26, and the length of the rectangular through hole 36 is larger than the diameter of the first rotating disc 23.
The distance between the front end of the front connecting plate 18 and the rear end of the rear connecting plate 30 is greater than the width of the left frame body.
The forming column is a columnar body made of steel, the distance between the front end of the peripheral wall of the forming column 19 and the front end of the bearing plate 26 is equal to the distance between the rear end of the peripheral wall of the forming column 19 and the rear end of the bearing plate 26, and the first rotating disc 23 and the second rotating disc 25 are symmetrical front and back along the vertical center of the forming column.
The straight hole 31 and the inclined hole 37 are both circular through holes, and the diameters of the straight hole 31 and the inclined hole 37 are the same.
The elastic tube 34 is a tubular body made of polyurethane and having a diameter equal to that of the first rotating disk 23.
The motor 27 is provided with a bearing column 24 on the bottom surface.
The specification of the forming columns is multiple, the structural sizes of the front connecting plate and the rear connecting plate of the forming columns are the same, the shape of each forming column 19 is the same, the diameter of a guide hole in each forming column 19 is different, the diameter of each forming column 19 is different, and the ratio of the diameter of the guide hole in each forming column 19 to the diameter of each forming column 19 in the forming columns is equal.
The round tube forming part is a round tube forming roller machine, or the round tube forming part comprises a bearing table 44 and a plurality of groups of forming rollers, the left side of the bearing table 44 is connected with a support column at the right end of the bottom surface of the bearing plate, a space is arranged between the top surface of the bearing table 44 and the top end of the bearing plate, the plurality of groups of forming rollers are arranged on the top surface of the bearing table 44 from left to right, each group of forming rollers comprises a front roller body 41 and a rear roller body 45 which are vertical, the circle centers of the bottom surfaces of the front roller body 41 and the rear roller body 45 are connected with a vertical downward rotating rod 43, the lower end of each rotating rod is detachably connected with the top surface of the bearing table, the rotating rods 43 are movably connected with the top surface of the bearing table 44, the structure sizes of the front roller body 41 and the rear roller body 45 are the same, an annular groove 42 which is sunken towards the central axis of the front roller body 41 and has an outward opening is arranged on the peripheral wall of the front roller body 41, the upper end and the lower end of the annular groove are respectively level with the upper end and the lower end of the front roller body, the annular grooves 42 on the peripheral walls of the front roller body 41 and the rear roller body 45 form circular through holes at the contact parts of the front roller body 41 and the rear roller body 45, the heights of the front roller body and the rear roller body on the left forming roller in each two adjacent groups of forming rollers are greater than the heights of the front roller body and the rear roller body on the right forming roller, the left ends of the top surface and the bottom surface of the front roller body and the rear roller body on the right forming roller in each two adjacent groups of forming rollers are respectively close to the upper part and the lower part of the right peripheral wall of the front roller body and the rear roller body on the left forming roller, the heights of the rotating rods on the multiple groups of forming rollers are sequentially increased from left to right, the diameter of the circular through holes formed by the front roller body 41 and the rear roller body 45 on the multiple groups of forming rollers is sequentially decreased from left to right, the leftmost forming roller in the multiple groups of forming rollers is close to the right side of the forming post, and the inner bottoms of the circular through holes formed by the front roller body 41 and the rear roller body 45 at the leftmost end are lower than or flush with the top surface of the back roller body 26, the circle centers of the circular through holes formed by the front roller body 41 and the rear roller body 45 on the multiple groups of forming rollers are all on the same axis.
The round tube forming roller machine is the prior art, such as the round tube forming roller machine with the patent number of 201921415740.6.
The insulating layer of the cable has an insulating effect and can improve a fire-resistant effect, and when the oxygen isolating layer between the first wrapping layer and the second wrapping layer is subjected to flame combustion, a compact oxygen isolating layer can be formed, so that oxygen can be isolated, a wire core can be protected, and the fire-resistant effect of the cable is further improved.
When the invention is used, a cable which is not coated with an armor layer penetrates into a forming column through the left end of a straight hole and then penetrates out of the forming column through the right end of an inclined hole, an aluminum tape penetrates out from the left to the right through the space between the upper part of an elastic cylinder and the lower end of the peripheral wall of the forming column from the left to the right, a motor is started in the process that the aluminum tape and the cable both move from the left to the right through a traction mechanism, the motor drives a rotating shaft to rotate clockwise, a first rotating disk and a second rotating disk rotate clockwise along with the rotating shaft, the elastic cylinder rotates clockwise along with the first rotating disk and the second rotating disk, the aluminum tape is upwards jacked through the upper part of the elastic cylinder, the top surface of the aluminum tape is attached to the lower part of the peripheral wall of the forming column to form the aluminum tape with radian in the jacked process, the forming column with different diameters can be replaced according to different widths of the aluminum tapes, the first fixing nut and the second fixing nut are loosened, the distances from the front end and the rear end of the forming column with different diameters to the first rotating disk and the second rotating disk are equal, the first fixing nut and the second fixing nut are screwed tightly, the left frame body and the right frame body can be moved up and down by loosening the left limiting nut and the right limiting nut, the left frame body and the right frame body are fixed by screwing the left limiting nut and the right limiting nut, so as to adjust the joint degree of the forming columns with different diameters and the elastic cylinder, in the process of downward movement of the forming columns, the first rotary table and the second rotary table respectively penetrate through U-shaped grooves on the front connecting plate and the rear connecting plate from bottom to top, the lower parts of the peripheral walls of the forming columns with different diameters and the upper parts of the elastic cylinder are ensured to be always jointed, and further, an aluminum belt between the forming columns and the elastic cylinder is completely jointed with the lower parts of the peripheral walls of the forming columns for forming, the left end of an inclined hole of the invention is communicated with the right end of a straight hole, the inclined hole penetrates through the lower parts of the right end of the forming columns in a downward inclination way, a cable which is not coated with an armor layer penetrates through the inclined hole and then enters an aluminum belt with a certain radian, and the cable and the aluminum belt which is bent into an arc plate simultaneously enters a round pipe from left to right for coating, or the cable and the aluminum belt bent into the arc plate simultaneously enter the circular through holes on the multiple groups of forming rollers from left to right, the diameter of the circular through hole formed by the front roller body and the rear roller body on the multiple groups of forming rollers is sequentially reduced from left to right, the arc plate is gradually coated on the cable under the extrusion of the forming rollers, and the forming rollers on the right parts of the multiple groups of forming rollers can be disassembled according to the increase of the diameter of the cable.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various equivalent or equivalent modifications or substitutions may be made within the scope of the present invention without departing from the spirit or scope of the invention.
Claims (9)
1. A cladding device for producing a fire-resistant polyvinyl chloride insulated cable comprises a wire core and a protective layer;
sinle silk quantity is three, every the structure homogeneous phase of sinle silk, the sinle silk is by interior to exterior conductor (8), insulating layer (7) and shielding layer (6) in proper order, insulating layer (7) are for the lamellar structure who constitutes around the fire-resistant mica tape of package on conductor (8) outer wall, shielding layer (6) are for the lamellar structure who constitutes around the semiconductor paper tape of package in insulating layer (7) outside, and shielding layer (6) on every two adjacent sinle silks contact, and the outside of three sinle silks is provided with wraps up the protective layer of three sinle silk in inside jointly, the protective layer includes first protective layer and second protective layer, first protective layer is first from inside to outside in proper order around covering (4), separates oxygen layer (3) and second around covering (2), first around covering (4) the outside of package at three sinle silk, three the outside of sinle silk and first layer (4) inner wall between, All pack between three the sinle silk and have filling layer (5), filling layer (5) are the columnar body that fire-retardant rock wool rope constitutes, first have around the crowded package in covering (4) outside and separate oxygen layer (3), separate oxygen layer (3) for the tubulose structure that pottery low smoke and zero halogen polyolefin made, it has second around covering (2) to separate oxygen layer (3) outside around the package, first be the lamellar structure that the glass fiber tape constitutes around the package around covering (2) and second around covering (4), the second protective layer sets up in first protective layer outside, the second protective layer is inside to outside in proper order inner liner (1), armor (10) and oversheath (12), inner liner (1) crowded package is around the outside of covering (2) at the second, armor (10) cladding is in the outside of inner liner (1), armor (10) are the tube-shaped body that the aluminium strip was made, the outer sheath (12) is extruded outside the armor layer (10), the inner liner layer (1) and the outer sheath (12) are both tubular bodies made of polyvinyl chloride, and the steel wire rope is characterized in that,
the cladding device for producing the fire-resistant polyvinyl chloride insulated cable comprises an arc plate forming part and a circular tube forming part;
the arc plate forming part comprises a base station, a forming mechanism and a pressing mechanism, the base station comprises a bearing plate (26) and supporting columns (13), the bearing plate (26) is a horizontally arranged rectangular plate body, rectangular through holes (36) penetrating through the upper surface and the lower surface of the bearing plate (26) are formed in the middle of the bearing plate (26), a first vertical plate (22) and a second vertical plate are vertically arranged in the middle of the front end and the middle of the rear end of the bottom surface of the bearing plate (26) respectively, a plurality of first threaded rods (16) arranged at intervals in the width direction of the bearing plate (26) are arranged at the left end and the right end of the bearing plate (26), one end of each first threaded rod (16) is connected with the bearing plate (26), the other end of each first threaded rod faces outwards, and the supporting columns (13) are arranged at the positions, close to the four corners, of the bottom surface of the bearing plate (26);
forming mechanism sets up on the base station, forming mechanism includes support frame and shaping post (19), the support frame includes the equal same left side support body of structure size and right support body, left side support body and right support body set up respectively in both ends and be the bilateral symmetry state about loading board (26), left side support body includes regulating plate (14), preceding carrier bar (17) and back carrier bar (29) are the square body of rod, regulating plate (14) are the rectangular plate body of vertical setting, interval setting is gone up in regulating plate (14) n type groove (33) that a plurality of regulating plate (14) of running through left and right sides lateral wall, opening down and first threaded rod (16) of loading board (26) left end correspond, regulating plate (14) right flank and loading board (26) left end face laminating, every first threaded rod (16) tip on loading board (26) left end face all passes corresponding n type groove (33) and is located Regulating plate (14) left side, all be equipped with left stop nut (15) on every first threaded rod (16) on regulating plate (14) left side soon, carrier bar (17) and back carrier bar (29) before both ends are vertical respectively around regulating plate (14) top surface are provided with, the upper end of preceding carrier bar (17) and back carrier bar (29) is vertical respectively to be provided with shape size homogeneous phase second threaded rod (21) and third threaded rod (35), regulating plate (14) left surface and carrier plate (26) right-hand member face laminating on the right side support body, regulating plate (14) right flank on carrier plate (26) right-hand member face on every first threaded rod (16) tip all passed corresponding n type groove (33) and is located regulating plate (14) right side on the right support body, all be equipped with stop nut (20) on every first threaded rod (16) on regulating plate (14) right side on the right side support body, be provided with between the left side support body and the right support body upper end and shaping post (19), the forming column (19) is a cylinder arranged above the bearing plate (26) along the length direction of the bearing plate (26), a guide hole is formed in the forming column (19), the guide hole comprises a straight hole (31) and an inclined hole (37), the straight hole (31) is arranged in the upper part of the forming column (19), the left end of the straight hole (31) penetrates through the left end surface and the right end surface of the forming column (19) and a space is reserved between the right end surface and the left end surface of the forming column (19), the inclined hole (37) is positioned in the forming column (19) on the right side of the straight hole (31), the left end of the inclined hole (37) is communicated with the right end of the straight hole (31), the right end of the inclined hole is downwards inclined to penetrate through the lower part of the right end surface of the forming column (19), a front connecting plate (18) and a rear connecting plate (30) which are identical in structure size are horizontally arranged at the front end and the rear end of the peripheral wall of the forming column (19), and the front connecting plate (18) and the rear connecting plate (30) are symmetrical, the left part and the right part of preceding connecting plate (18) are provided with bar through-hole (40), two along preceding connecting plate (18) width direction respectively bar through-hole (40) correspond from top to bottom with second threaded rod (21) on left side support body, the right side support body respectively, second threaded rod (21) are the round bar body that the diameter is less than bar through-hole width, and the distance between the side is all greater than the width that corresponds the bar through-hole about the preceding carrier bar on left side support body, the right side support body on the support body, the trailing flank middle part of preceding connecting plate (18) is provided with U type groove (39) backward to the inside sunken opening of preceding connecting plate (18), and the upper and lower extreme of U type groove (39) runs through the upper and lower face of preceding connecting plate (18) respectively, and the distance between the side all is greater than the width of bar through-hole on back connecting plate (30) about the back carrier bar on left side support body, the right side support body and the support body second threaded rod (21) tip passes the corresponding through-hole (a) on preceding connecting plate (18) respectively (a left side support body and support body (40) (the width of the bar 40) The second threaded rod (21) positioned on the upper side of the front connecting plate (18) is provided with a first fixing nut (32) in a rotating mode, the end parts of third threaded rods (35) on the left frame body and the right frame body respectively penetrate through the corresponding strip-shaped through holes (40) on the rear connecting plate (30) and are positioned on the upper side of the rear connecting plate (30), and the third threaded rod (35) on the upper side of the rear connecting plate (30) is provided with a second fixing nut (38) in a rotating mode;
the pressing mechanism is arranged in the middle of the bottom surface of the bearing plate (26), the pressing mechanism comprises a rotating shaft (28) and a rotating disc, the front end of the rotating shaft (28) is movably connected to the rear side surface of the first vertical plate (22), the rear end of the rotating shaft penetrates through the second vertical plate, the rear side of the base station is provided with a motor (27), the rear end of the rotating shaft (28) is connected with the output end of the motor (27), the rotating disc comprises a first rotating disc (23) and a second rotating disc (25) which are identical in structure and size, the first rotating disc (23) is a circular disc body with a circular through hole at the center of the circle, the first rotating disc (23) and the second rotating disc (25) are sleeved on the peripheral wall of the rotating shaft (28) between the first vertical plate (22) and the second vertical plate through a circular through hole, the upper end of the first rotating disc (23) penetrates through the rear part of the rectangular through hole (36) and is positioned on the rear side of the lower part of the forming column (19) and vertically corresponds to a U-shaped groove (39) on the rear connecting plate (30), the upper end of the second rotary disc (25) penetrates through the front part of the rectangular through hole (36) and is positioned on the front side of the lower part of the forming column (19) and vertically corresponds to the U-shaped groove (39) on the front connecting plate (18), an elastic cylinder (34) is sleeved outside a rotating shaft between the first rotary disc (23) and the second rotary disc (25), two ends of the elastic cylinder (34) are connected to opposite side edges of the first rotary disc (23) and the second rotary disc (25) to form a hollow carrier roller-shaped structure, and the upper part of the peripheral wall of the elastic cylinder (34) is in contact with the lower part of the peripheral wall of the forming column to enable the upper part of the peripheral wall of the elastic cylinder (34) to be elastically deformed into a downward convex arc shape;
the circular tube forming part is arranged on the right side of the arc plate forming part.
2. The sheathing apparatus for producing fire-resistant polyvinyl chloride insulated cables, according to claim 1, wherein the oblong through holes (36) are arranged along the length of the bearing plate (26), the length of the oblong through holes (36) being greater than the diameter of the first rotating disc (23).
3. The sheathing apparatus for manufacturing a fire-resistant polyvinyl chloride insulated cable, according to claim 1, wherein the distance from the front end of the front connection plate (18) to the rear end of the rear connection plate (30) is greater than the width of the left frame body.
4. The sheathing apparatus for producing a fire-resistant polyvinyl chloride insulated cable according to claim 1, wherein the forming post is a cylindrical body made of steel, the distance between the front end of the circumferential wall of the forming post (19) and the front end of the bearing plate (26) is equal to the distance between the rear end of the circumferential wall of the forming post (19) and the rear end of the bearing plate (26), and the first rotating disc (23) and the second rotating disc (25) are symmetrical back and forth along the vertical center of the forming post.
5. The covering device for producing fire-resistant polyvinyl chloride insulated cables according to claim 1, characterized in that the straight holes (31) and the inclined holes (37) are circular through holes, and the diameters of the straight holes (31) and the inclined holes (37) are the same.
6. A covering device for the production of fire-resistant polyvinyl chloride insulated cables according to claim 1, characterized in that said elastic tube (34) is a tubular body made of polyurethane with a diameter equal to the diameter of the first rotating disc (23).
7. The covering device for producing fire-resistant polyvinyl chloride insulated cables according to claim 1, characterized in that the motor (27) is provided with a bearing column (24) on the bottom surface.
8. The covering device for producing the fire-resistant polyvinyl chloride insulated cable according to claim 1, wherein the forming columns are in a plurality of specifications, the front connecting plate and the rear connecting plate of the forming columns are in the same structural size, each forming column (19) is in the same shape, the diameter of the guide hole on each forming column (19) is different, the diameter of each forming column (19) is different, and the ratio of the diameter of the guide hole on each forming column (19) in the forming columns to the diameter of the forming column (19) is equal.
9. The coating device for producing the fire-resistant polyvinyl chloride insulated cable according to claim 1, wherein the round tube forming part is a round tube forming roller machine, or the round tube forming part comprises a bearing table (44) and a plurality of groups of forming rollers, the left side of the bearing table (44) is connected with the supporting column at the right end of the bottom surface of the bearing table, a space is arranged between the top surface of the bearing table (44) and the top end of the bearing table, the plurality of groups of forming rollers are arranged on the top surface of the bearing table (44) from left to right, each group of forming rollers comprises a front roller body (41) and a rear roller body (45) which are vertical, the centers of the bottoms of the front roller body (41) and the rear roller body (45) are connected with a vertical downward rotating rod (43), the lower end of each rotating rod can be detachably connected with the top surface of the bearing table, the rotating rod (43) is movably connected with the top surface of the bearing table (44), the front roller body (41) and the rear roller body (45) are the same in structure size, the peripheral wall of the front roller body (41) is provided with an annular groove (42) which is concave towards the central axis of the front roller body (41) and has an outward opening, the upper end and the lower end of the annular groove are respectively flush with the upper end and the lower end of the front roller body, the annular groove (42) on the peripheral walls of the front roller body (41) and the rear roller body (45) form a circular through hole at the contact part of the front roller body (41) and the rear roller body (45), the heights of the front roller body and the rear roller body on the left forming roller in each two adjacent groups of forming rollers are higher than those of the front roller body and the rear roller body on the right forming roller, the left ends of the top surface and the bottom surface of the front roller body and the rear roller body on the right forming roller in each two adjacent groups of forming rollers are respectively close to the upper part and the lower part of the right peripheral wall of the front roller body and the rear roller body on the left forming roller body, the heights of the rotating rods on the multiple groups of forming rollers are sequentially increased from left to right, and the diameters of the circular through holes formed by the front roller body (41) and the rear roller body (45) on the multiple groups of forming rollers are sequentially reduced from left to right, the forming roller of the leftmost end is close to the right side of the forming column in the multiple groups of forming rollers, the inner bottom of the circular through hole formed by the leftmost front roller body (41) and the rear roller body (45) is lower than or flush with the top surface of the bearing plate (26), and the circle centers of the circular through holes formed by the front roller body (41) and the rear roller body (45) on the multiple groups of forming rollers are on the same axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110180617.6A CN112885508B (en) | 2021-02-08 | 2021-02-08 | Fire-resistant polyvinyl chloride insulated cable and cladding device of production usefulness thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110180617.6A CN112885508B (en) | 2021-02-08 | 2021-02-08 | Fire-resistant polyvinyl chloride insulated cable and cladding device of production usefulness thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112885508A CN112885508A (en) | 2021-06-01 |
| CN112885508B true CN112885508B (en) | 2021-09-07 |
Family
ID=76057613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110180617.6A Active CN112885508B (en) | 2021-02-08 | 2021-02-08 | Fire-resistant polyvinyl chloride insulated cable and cladding device of production usefulness thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112885508B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU91463U1 (en) * | 2009-09-03 | 2010-02-10 | Общество С Ограниченной Ответственностью "Спецсвязьмонтажкомплект" | EXPLOSIVE FIRE-RESISTANT ELECTRIC CABLE (OPTIONS) |
| CN205599791U (en) * | 2016-05-06 | 2016-09-28 | 山东金麒麟股份有限公司 | Drum brake piece shoe arc plate voltage arc forming die |
| CN107377651A (en) * | 2017-08-07 | 2017-11-24 | 天津长飞鑫茂光缆有限公司 | A kind of optical cable steel aluminium strip shaped device |
| CN207057364U (en) * | 2017-08-03 | 2018-03-02 | 广州鹏辉能源科技股份有限公司 | A kind of molding structure of aluminum annular-shaped plastic housing |
| CN209401350U (en) * | 2018-03-28 | 2019-09-17 | 浙江元通线缆制造有限公司 | A kind of B1 grades of power cable |
-
2021
- 2021-02-08 CN CN202110180617.6A patent/CN112885508B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU91463U1 (en) * | 2009-09-03 | 2010-02-10 | Общество С Ограниченной Ответственностью "Спецсвязьмонтажкомплект" | EXPLOSIVE FIRE-RESISTANT ELECTRIC CABLE (OPTIONS) |
| CN205599791U (en) * | 2016-05-06 | 2016-09-28 | 山东金麒麟股份有限公司 | Drum brake piece shoe arc plate voltage arc forming die |
| CN207057364U (en) * | 2017-08-03 | 2018-03-02 | 广州鹏辉能源科技股份有限公司 | A kind of molding structure of aluminum annular-shaped plastic housing |
| CN107377651A (en) * | 2017-08-07 | 2017-11-24 | 天津长飞鑫茂光缆有限公司 | A kind of optical cable steel aluminium strip shaped device |
| CN209401350U (en) * | 2018-03-28 | 2019-09-17 | 浙江元通线缆制造有限公司 | A kind of B1 grades of power cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112885508A (en) | 2021-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112863775B (en) | Halogen-free low-smoke flame-retardant B1-grade power cable | |
| CN112885508B (en) | Fire-resistant polyvinyl chloride insulated cable and cladding device of production usefulness thereof | |
| CN2696086Y (en) | Fire-resistant and refractory environmental protection wire and cable | |
| CN204792059U (en) | Novel flexible fire prevention mineral substance cable | |
| CN211529645U (en) | Super flexible mineral substance fireproof cable | |
| CN112951488B (en) | Aluminum alloy cable manufacturing equipment and manufacturing method thereof | |
| CN110310769B (en) | Heat-insulation type control cable for electric power control and preparation process thereof | |
| CN111276285A (en) | Super-deep well mine suspended cable and production process thereof | |
| CN112271032A (en) | Processing method of halogen-free low-smoke flame-retardant B1-grade cable | |
| CN209980847U (en) | Medium-voltage fireproof power cable | |
| CN115050516A (en) | Overload self-warning cable and auxiliary equipment for production thereof | |
| CN115083676A (en) | Cable for nuclear power station for warship and manufacturing device | |
| CN113539555B (en) | High-voltage composite umbilical cable and manufacturing process thereof | |
| CN214897756U (en) | Fireproof flame-retardant fire-resistant cable, fireproof coating and outer sheath layer manufacturing device | |
| CN215834271U (en) | Flat type stretching-resistant low-voltage power cable | |
| CN112562904B (en) | Fireproof cable and raw material stirring device for producing fireproof cable | |
| CN114783659A (en) | High-transmission full-shielding high-frequency cable applicable to Internet of things and manufacturing method thereof | |
| CN114121370A (en) | Preparation method of B1-grade flame-retardant mineral substance insulated flexible fireproof cable | |
| CN210735824U (en) | Unloader on take-up pulley is used in processing of nonmetal mineral products rock wool filling rope | |
| CN211529689U (en) | Flame-retardant and fire-resistant power cable containing ceramic fire-resistant material | |
| CN217588485U (en) | Halogen-free low-smoke B1-level flame-retardant and fire-resistant cable | |
| CN211788328U (en) | Environment-friendly flame-retardant power cable for construction engineering | |
| CN212934234U (en) | Mineral substance cable with fire-resistant structure | |
| CN218497807U (en) | Tensile type winding cable | |
| CN211427919U (en) | Durable communication cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A fire-resistant PVC insulated cable and its coating device for production Effective date of registration: 20221013 Granted publication date: 20210907 Pledgee: Bank of China Limited by Share Ltd. Zhengzhou high tech Development Zone Branch Pledgor: PEOPLE'S CABLE GROUP Co.,Ltd. Registration number: Y2022980018241 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230925 Granted publication date: 20210907 Pledgee: Bank of China Limited by Share Ltd. Zhengzhou high tech Development Zone Branch Pledgor: PEOPLE'S CABLE GROUP Co.,Ltd. Registration number: Y2022980018241 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A fire-resistant polyvinyl chloride insulated cable and its coating device for production Effective date of registration: 20230927 Granted publication date: 20210907 Pledgee: Bank of China Limited Gongyi Branch Pledgor: PEOPLE'S CABLE GROUP Co.,Ltd. Registration number: Y2023980059074 |