CN114801013A - Physical foaming type RS485 communication bus cable production process - Google Patents
Physical foaming type RS485 communication bus cable production process Download PDFInfo
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- CN114801013A CN114801013A CN202210373257.6A CN202210373257A CN114801013A CN 114801013 A CN114801013 A CN 114801013A CN 202210373257 A CN202210373257 A CN 202210373257A CN 114801013 A CN114801013 A CN 114801013A
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- physical foaming
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- box
- communication bus
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- 238000005187 foaming Methods 0.000 title claims abstract description 102
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000004891 communication Methods 0.000 title claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 80
- 229920003023 plastic Polymers 0.000 claims abstract description 41
- 239000004033 plastic Substances 0.000 claims abstract description 41
- 239000012530 fluid Substances 0.000 claims abstract description 36
- 239000002994 raw material Substances 0.000 claims abstract description 26
- 239000002245 particle Substances 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 53
- 238000010438 heat treatment Methods 0.000 claims description 25
- 238000003756 stirring Methods 0.000 claims description 21
- 229910052757 nitrogen Inorganic materials 0.000 claims description 20
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 17
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 17
- 241001330002 Bambuseae Species 0.000 claims description 17
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 17
- 239000011425 bamboo Substances 0.000 claims description 17
- 238000001035 drying Methods 0.000 claims description 17
- 238000005485 electric heating Methods 0.000 claims description 11
- 238000009826 distribution Methods 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 6
- 238000002791 soaking Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 14
- 230000000694 effects Effects 0.000 description 11
- 239000007789 gas Substances 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 244000309464 bull Species 0.000 description 3
- 239000004088 foaming agent Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229920000426 Microplastic Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3415—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3442—Mixing, kneading or conveying the foamable material
-
- 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
- H01B13/02—Stranding-up
- H01B13/0207—Details; Auxiliary devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to the technical field of cable production, and particularly relates to a physical foaming type RS485 communication bus cable production process, which aims at the problem that after raw material particles are added, the raw material particles are directly placed in a foaming chamber, and the raw material particles are required to be completely melted and then are foamed by introducing inert gas, so that the preparation process is discontinuous. In the process of preparing the plastic raw material particles, the added raw material particles are heated in the preheating material cylinder to form fluid, and then the fluid is conveyed to the physical foaming box to prepare the foamed plastic.
Description
Technical Field
The invention relates to the technical field of cable production, in particular to a production process of a physical foaming RS485 communication bus cable.
Background
RS-485, also known as TIA-485-a, is a standard defined to balance the electrical characteristics of drivers and receivers in digital multipoint systems, defined by the telecommunications industry association and the electronics industry consortium, and digital communication networks using this standard are capable of efficiently transmitting signals under long-range conditions and in environments with high electrical noise.
The physical foaming is a process of foaming plastics by a physical method to generate a microporous structure, particularly, gas or liquid is dissolved in the plastics and then the plastics are expanded or vaporized for foaming, the physical foaming agent used for the physical foaming has relatively low cost, particularly, the cost of carbon dioxide and nitrogen is low, the physical foaming agent can resist flame and has no pollution, no residue is left after the physical foaming agent is foamed, and the influence on the performance of the foamed plastics is small, so the application value is high.
The physical foaming process requires that inert gas is dissolved in plastic melt or paste under pressure, and then the gas is released under reduced pressure, so that air holes are formed in the plastic to foam.
At present, the physical foaming process is mostly carried out in an extruding machine, and because the raw material particles are directly added into a foaming chamber, the raw material particles need to be completely melted and then inert gas is introduced for foaming, so that the preparation process is discontinuous.
Disclosure of Invention
The invention provides a physical foaming RS communication bus cable and a production process thereof, wherein the production process comprises the following steps:
s1: conveying the copper stranded wires, and stranding the water-blocking conductors in the conveying process to cover the cable cores;
s2: conveying the plastic raw material particles to physical foaming equipment for preparing foamed plastic, and then extruding an insulating layer of the cable by using the prepared foamed plastic;
s3: after the insulating layer is cooled and covered, the semi-finished cable is conveyed continuously, and the semi-finished cable is respectively wrapped by a semi-conductive water-blocking tape buffer layer, extruded by an alloy lead sleeve and extruded by a sheath;
s4: laser lettering is carried out on the outer wall of the cable after cabling is carried out, so that the accurate laser lettering position is ensured;
wherein, physics foaming equipment includes physics foaming case and three material section of thick bamboo of preheating, it is three the top that the material section of thick bamboo of preheating is located the physics foaming case is the equidistance and distributes, and the same link of three outside fixedly connected with who preheats the material section of thick bamboo, it is three the inside of preheating the material section of thick bamboo all is provided with the axostylus axostyle, and the defeated material hot rod of outside fixedly connected with of axostylus axostyle, and the shape of defeated material hot rod is the round platform form, the outer wall fixedly connected with spiral puddler of defeated material hot rod, and the cavity has been seted up to the inside of defeated material hot rod, and the inner wall fixedly connected with hot plate of cavity.
Preferably, one end of the shaft lever is movably connected with the inner wall of one side of the preheating material cylinder, and the other end of the shaft lever penetrates through the preheating material cylinder and is fixedly connected with a first traction wheel disc.
Preferably, the outer wall of the lower side of the preheating material barrel is fixedly connected with a first motor base, the inner wall of the first motor base is fixedly connected with a first motor, the output end of the first motor is connected with a short shaft through a coupler, the other end of the short shaft is fixedly connected with a first driving wheel disc, and a first belt is arranged between the first driving wheel disc and three first traction wheel discs.
Preferably, it is three the charge door has all been seted up to the upper end of preheating material section of thick bamboo, and the outside fixedly connected with of charge door adds the feed bin, and the inside of adding the feed bin is provided with material control valve, and the feed opening has all been seted up to the lower extreme of three preheating material section of thick bamboo, and the outer wall fixedly connected with unloading pipe of feed opening, fixed connection between the lower port of unloading pipe and the inner wall of physics foaming box, and the inside of unloading pipe all is provided with fluid control valve.
Preferably, the inside of physics foaming box is provided with the bull stick of a plurality of equidistance, and the equal fixedly connected with of outside of bull stick attaches the seat outward, and attaches four stirring leaves of outer wall fixedly connected with of seat outward, and four stirring leaves are circumference equidistance and distribute, all are provided with the shower nozzle of a plurality of equidistance between four stirring leaves.
Preferably, one end of the rotating rod penetrates through a second traction wheel disc fixedly connected with one side box wall of the physical foaming box, a second motor base is fixedly connected with the outer wall of the bottom of the physical foaming box, a second motor is fixedly connected with the inner wall of the second motor base, the output end of the second motor is connected with a short shaft through a coupler, the other end of the short shaft is fixedly connected with a second driving wheel disc, and a second belt is arranged between the second driving wheel disc and the plurality of second traction wheel discs.
Preferably, the other end of the rotating rod penetrates through the other side box wall of the physical foaming box and is movably connected with a distributing pipe through a connector, the other ends of the distributing pipes are fixedly connected with the same drying box, the outer wall of the drying box is fixedly connected with the physical foaming box, the outer wall of one side of the physical foaming box is fixedly connected with a nitrogen making machine, the output end of the nitrogen making machine is connected with a gas conveying pipe through a screw, and the other end of the gas conveying pipe is fixedly connected with the input end of the drying box.
Preferably, the rectangular channel has been seted up on the physics foaming case, the inner wall fixed connection booster pump of rectangular channel, and the both sides inner wall of physics foaming case all is provided with a plurality of semi-circular heating seats, and a plurality of semi-circular heating seats all are the equidistance and distribute, the inner wall fixed connection of physics foaming case has a plurality of equidistance electrothermal tubes, and the both ends of a plurality of electrothermal tubes are located the inside of a plurality of semi-circular heating seats respectively, fixedly connected with soaking plate between the bottom inner wall of a plurality of electrothermal tubes and physics foaming case.
Preferably, a feed opening is formed in the lower portion of the physical foaming box, a material distribution control valve is fixedly connected to the inner wall of the feed opening, a plurality of equidistant lower connectors are arranged below the material distribution control valve, the lower connectors are fixedly connected with taps, and outer feeding pipes are fixedly connected to the lower portions of the taps.
The beneficial effects of the invention are as follows:
1. according to the invention, through the arranged physical foaming equipment, in the preparation process of the plastic raw material particles, the added raw material particles are heated in the preheating material cylinder to form fluid, and then the fluid is conveyed to the physical foaming box to prepare the foamed plastic.
2. According to the invention, plastic raw material particles are conveyed into a preheating material cylinder from a feeding bin through the feeding bin, a material control valve, a blanking pipe and a fluid control valve, a first motor drives a plurality of shaft levers to rotate simultaneously through a belt, a heating plate in a material conveying heating rod is electrified to heat the raw material particles in the cylinder, meanwhile, in the rotating process of the material conveying heating rod, a spiral stirring rod stirs the plastic raw material particles, the contact effect of the raw material particles and the material conveying heating rod is further improved, after foamed plastic in a physical foaming box is discharged, the fluid control valve is opened, the plastic raw material melted in the preheating material cylinder flows into the physical foaming box, then the fluid control valve is closed, and the material control valve above the fluid control valve is opened to convey the raw material; the first motor is used for driving the shaft levers in the three preheating material cylinders to rotate simultaneously, so that preheating operation of plastic raw material particles is performed, and the melting efficiency of the plastic particles is improved; the material control valve and the fluid control valve work alternately, and the circulating working state of the preheating material cylinder can be guaranteed.
3. According to the invention, through the arranged rotating rod, the external auxiliary seat, the stirring blades, the spray head, the distributing pipe, the drying box, the nitrogen making machine and the gas conveying pipe, after molten plastic fluid flows into the physical foaming box, the second motor simultaneously drives the plurality of rotating rods to rotate, meanwhile, the external nitrogen making machine prepares nitrogen gas and then conveys the nitrogen gas into the drying box for drying, and then conveys the nitrogen gas into the external auxiliary seat to be sprayed out by the spray head, the nitrogen gas is directly contacted with the plastic fluid after being sprayed out, and after the internal pressure of the physical foaming box is increased, the nitrogen gas is dissolved into the fluid along with the increase of the contact effect of the stirring nitrogen gas of the stirring blades and the fluid; the stirring blade can improve the contact effect of the nitrogen and the fluid after the plastic is melted, and improve the speed of dissolving the nitrogen into the fluid; the drying cabinet can dry the nitrogen gas of preparing, avoids moisture to influence subsequent physics foaming effect.
4. According to the invention, through the arrangement of the booster pump, the semicircular heating seat, the electric heating tube, the soaking plate, the material distribution control valve, the tapping device and the external material feeding pipe, the booster pump boosts the pressure in the physical foaming box, the electric heating tube is electrified and heated in the physical foaming process, so that the fluid is always heated by the bottom inner wall of the physical foaming box and the semicircular heating seat, the melting effect of the plastic is ensured, the dissolving efficiency of nitrogen and the fluid is accelerated, after the nitrogen is dissolved in the fluid, the pressure of the physical foaming box is reduced, the material distribution control valve is opened, and the foamed plastic is output from the external material feeding pipe.
Drawings
Fig. 1 is a schematic overall sectional structural view of a physical foaming RS485 communication bus cable production process according to the present invention;
fig. 2 is a schematic structural diagram of a preheating material barrel of the physical foaming type RS485 communication bus cable production process provided by the invention;
fig. 3 is a schematic view of the overall structure of a physical foaming RS485 communication bus cable production process according to the present invention;
FIG. 4 is a schematic view of the internal structure of a material foaming box of the physical foaming type RS485 communication bus cable production process;
fig. 5 is a schematic sectional structure view of a material foaming box of the physical foaming type RS485 communication bus cable production process provided by the invention.
In the figure: 1. a physical foaming box; 2. preheating a material cylinder; 3. a connecting frame; 4. a shaft lever; 5. a material conveying heating rod; 6. a helical agitator shaft; 7. heating plates; 8. a first traction sheave; 9. a first motor mount; 10. a first motor; 11. a first active wheel disc; 12. a first belt; 13. a feeding bin; 14. a material control valve; 15. a discharging pipe; 16. a fluid control valve; 17. a rotating rod; 18. an external seat; 19. stirring blades; 20. a spray head; 21. a second traction wheel disc; 22. a second motor mount; 23. a second motor; 24. a second active wheel disc; 25. a second belt; 26. a connection pipe is connected; 27. a drying oven; 28. a nitrogen making machine; 29. a gas delivery pipe; 30. a booster pump; 31. a semicircular heating seat; 32. an electric heating tube; 33. a vapor chamber; 34. a material distribution control valve; 35. a tap; 36. and an outer feeding pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
A production process of a physical foaming type RS485 communication bus cable, as shown in fig. 1 and 2, comprising the following steps:
s1: conveying the copper stranded wires, and stranding the water-blocking conductors in the conveying process to cover the cable cores;
s2: conveying the plastic raw material particles to physical foaming equipment for preparing foamed plastic, and then extruding an insulating layer of the cable by using the prepared foamed plastic;
s3: after the insulating layer is cooled and covered, the semi-finished cable is conveyed continuously, and the semi-finished cable is respectively wrapped by a semi-conductive water-blocking tape buffer layer, extruded by an alloy lead sleeve and extruded by a sheath;
s4: laser lettering is carried out on the outer wall of the cable after cabling is carried out, so that the accurate laser lettering position is ensured;
wherein, physics foaming equipment includes physics foaming box 1 and three material section of thick bamboo 2 of preheating, three material section of thick bamboo 2 of preheating is located the top of physics foaming box 1 and is the equidistance and distributes, and three material section of thick bamboo 2 of preheating has same link 3 through bolted connection, three inside of preheating material section of thick bamboo 2 all is provided with axostylus axostyle 4, there is defeated material heater bar 5 outside of axostylus axostyle 4 through bolted connection, and the shape of defeated material heater bar 5 is the round platform form, there is spiral puddler 6 outer wall of defeated material heater bar 5 through bolted connection, and the cavity has been seted up to the inside of defeated material heater bar 5, there is hot plate 7 the inner wall of cavity through bolted connection.
Further, as shown in fig. 1 and 2, one end of the shaft lever 4 is rotatably connected with the inner wall of one side of the preheating material cylinder 2 through a bearing, and the other end of the shaft lever 4 penetrates through the preheating material cylinder 2 and is connected with a first driving wheel disc 8 through a bolt; the downside outer wall that preheats material barrel 2 has first motor cabinet 9 through bolted connection, the inner wall of first motor cabinet 9 has first motor 10 through bolted connection, first motor 10's output has the minor axis through the coupling joint, the other end of minor axis has first initiative rim plate 11 through bolted connection, and be provided with first belt 12 between first initiative rim plate 11 and the three first driving rim plate 8, utilize first motor 10 to drive the axostylus axostyle 4 rotation in the three preheating material barrel 2 simultaneously, carry out the operation of preheating of plastic raw material granule, improve plastic granules's melting efficiency.
Further, as shown in fig. 1 and 2, the charge door has all been seted up to the upper end of three preheating material section of thick bamboo 2, there is feed bin 13 in the outside of charge door through bolted connection, the inside of feed bin 13 is provided with material control valve 14, and the feed opening has all been seted up to the lower extreme of three preheating material section of thick bamboo 2, there is feed pipe 15 in the outer wall of feed opening through bolted connection, pass through bolted connection between the lower port of feed pipe 15 and the inner wall of physics foaming box 1, the inside of feed pipe 15 all is provided with fluid control valve 16, material control valve 14 and fluid control valve 16 work in turn, can guarantee the circulation operating condition who preheats material section of thick bamboo 2.
Furthermore, as shown in fig. 3 and 4, a plurality of equidistant rotating rods 17 are arranged inside the physical foaming box 1, the outer parts of the rotating rods 17 are all connected with an external attachment seat 18 through bolts, the outer wall of the external attachment seat 18 is connected with four stirring blades 19 through bolts, the four stirring blades 19 are distributed in a circumferential equidistant manner, a plurality of equidistant spray heads 20 are arranged between the four stirring blades 19, and the stirring blades 19 can improve the contact effect of nitrogen and the fluid after plastic melting and improve the speed of the nitrogen dissolved in the fluid; one end of the rotating rod 17 penetrates through the box wall on one side of the physical foaming box 1 and is connected with a second traction wheel disc 21 through a bolt, the outer wall of the bottom of the physical foaming box 1 is connected with a second motor seat 22 through a bolt, the inner wall of the second motor seat 22 is connected with a second motor 23 through a bolt, the output end of the second motor 23 is connected with a short shaft through a coupler, the other end of the short shaft is connected with a second driving wheel disc 24 through a bolt, and a second belt 25 is arranged between the second driving wheel disc 24 and the plurality of second traction wheel discs 21; the other end of bull stick 17 passes the other side tank wall of physics foaming case 1 and rotates through the connector and be connected with the takeover 26, the other end of a plurality of takeover 26 has same drying cabinet 27 through bolted connection, pass through bolted connection between the outer wall of drying cabinet 27 and the physics foaming case 1, and there is nitrogen generator 28 one side outer wall of physics foaming case 1 through bolted connection, there is air pipe 29 output of nitrogen generator 28 through threaded connection, pass through bolted connection between the other end of air pipe 29 and the input of drying cabinet 27, drying cabinet 27 can dry the nitrogen gas of preparing, avoid moisture to influence subsequent physics foaming effect.
Furthermore, as shown in fig. 3 and 5, a rectangular groove is formed in the physical foaming box 1, the inner wall of the rectangular groove is connected with the booster pump 30 through bolts, the inner walls of the two sides of the physical foaming box 1 are respectively provided with a plurality of semicircular heating seats 31, the semicircular heating seats 31 are distributed at equal intervals, the inner wall of the physical foaming box 1 is connected with a plurality of electric heating tubes 32 at equal intervals through bolts, two ends of the electric heating tubes 32 are respectively located inside the semicircular heating seats 31, a soaking plate 33 is connected between the electric heating tubes 32 and the inner wall of the bottom of the physical foaming box 1 through bolts, the electric heating tubes 32 are powered on and heated, and then the fluid is heated all the time through the inner wall of the bottom of the physical foaming box 1 and the semicircular heating seats 31, so that the melting effect of plastics is ensured and the dissolution efficiency of nitrogen and the fluid is accelerated; the feed opening has been seted up to the below of physics foaming box 1, and the inner wall of feed opening has branch material control valve 34 through bolted connection, and the below of branch material control valve 34 is provided with a plurality of equidistant lower interfaces, and the lower interface all has tap 35 through bolted connection, and the below of tap 35 all has outer material pipe 36 that send through bolted connection.
The working principle is as follows: conveying plastic raw material particles into a preheating material barrel 2 from a feeding bin 13, driving a plurality of shaft rods 4 to rotate simultaneously by a first motor 10 through a first belt 12, heating the raw material particles in the barrel after a heating plate 7 in a material conveying heating rod 5 is electrified, and meanwhile, stirring the plastic raw material particles by a spiral stirring rod 6 in the rotating process of the material conveying heating rod 5, so that the contact effect of the raw material particles and the material conveying heating rod 5 is further improved, after foamed plastics in a physical foaming box 1 are discharged, opening a fluid control valve 16, enabling the plastic raw material melted in the preheating material barrel 2 to flow into the physical foaming box 1, closing the fluid control valve 16, and opening a material control valve 14 above to convey the raw material;
after the melted plastic fluid flows into the physical foaming box 1, the second motor 23 simultaneously drives the plurality of rotating rods 17 to rotate, meanwhile, an external nitrogen making machine 28 makes nitrogen gas, then the nitrogen gas is conveyed into a drying box 27 for drying, then the nitrogen gas is conveyed into an external attachment seat 18 and sprayed out by a spray head 20, the nitrogen gas is directly contacted with plastic fluid after being sprayed out, a booster pump 30 boosts the pressure in the physical foaming box 1, the contact effect of the stirring nitrogen gas of the stirring blade 19 and the fluid is increased, the nitrogen gas is dissolved into the fluid, an electric heating tube 32 is electrified and heated in the physical foaming process, therefore, the fluid is heated all the time by the inner wall of the bottom of the physical foaming box 1 and the semicircular heating seat 31, the melting effect of the plastic is ensured, the dissolving efficiency of the nitrogen and the fluid is accelerated, after the nitrogen is dissolved in the fluid, the physical foaming tank 1 is depressurized, the material distribution control valve 34 is opened, and the foamed plastic is discharged from the external feeding pipe 36.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A production process of a physical foaming RS485 communication bus cable is characterized by comprising the following steps:
s1: conveying the copper stranded wires, and stranding the water-blocking conductors in the conveying process to cover the cable cores;
s2: conveying the plastic raw material particles to physical foaming equipment for preparing foamed plastic, and then extruding an insulating layer of the cable by using the prepared foamed plastic;
s3: after the insulating layer is cooled and covered, the semi-finished cable is conveyed continuously, and the semi-finished cable is respectively wrapped by a semi-conductive water-blocking tape buffer layer, extruded by an alloy lead sleeve and extruded by a sheath;
s4: laser lettering is carried out on the outer wall of the cable after cabling is carried out, so that the accurate laser lettering position is ensured;
wherein, physics foaming equipment includes physics foaming case (1) and three material section of thick bamboo (2) of preheating, its characterized in that, it is three preheat the top that material section of thick bamboo (2) are located physics foaming case (1) and be the equidistance and distribute, and the same link (3) of the outside fixedly connected with of three material section of thick bamboo (2) of preheating, it is three the inside of preheating material section of thick bamboo (2) all is provided with axostylus axostyle (4), and defeated material heater bar (5) of outside fixedly connected with of axostylus axostyle (4), and the shape of defeated material heater bar (5) is the round platform form, the outer wall fixedly connected with spiral puddler (6) of defeated material heater bar (5), and the inside of defeated material heater bar (5) has seted up the cavity, and the inner wall fixedly connected with hot plate (7) of cavity.
2. The production process of the physical foaming RS485 communication bus cable according to claim 1, wherein one end of the shaft lever (4) is movably connected with the inner wall of one side of the preheating material cylinder (2), and the other end of the shaft lever (4) penetrates through the preheating material cylinder (2) and is fixedly connected with a first driving wheel disc (8).
3. The production process of the physical foaming RS485 communication bus cable according to claim 2, wherein a first motor base (9) is fixedly connected to the outer wall of the lower side of the preheating material cylinder (2), a first motor (10) is fixedly connected to the inner wall of the first motor base (9), an output end of the first motor (10) is connected with a short shaft through a coupler, a first driving wheel disc (11) is fixedly connected to the other end of the short shaft, and a first belt (12) is arranged between the first driving wheel disc (11) and the three first driving wheel discs (8).
4. The production process of the physical foaming RS485 communication bus cable according to claim 1, characterized in that the upper ends of the three preheating material cylinders (2) are all provided with a charging opening, the outside of the charging opening is fixedly connected with a charging bin (13), a material control valve (14) is arranged inside the charging bin (13), the lower ends of the three preheating material cylinders (2) are all provided with a blanking opening, the outer wall of the blanking opening is fixedly connected with a blanking pipe (15), the lower end opening of the blanking pipe (15) is fixedly connected with the inner wall of the physical foaming box (1), and the inside of the blanking pipe (15) is provided with a fluid foaming control valve (16).
5. The production process of the physical foaming type RS485 communication bus cable according to claim 1, wherein a plurality of equidistant rotating rods (17) are arranged inside the physical foaming box (1), an external attached seat (18) is fixedly connected to the outside of each rotating rod (17), four stirring blades (19) are fixedly connected to the outer wall of the external attached seat (18), the four stirring blades (19) are distributed in a circumferential equidistant manner, and a plurality of equidistant spray heads (20) are arranged among the four stirring blades (19).
6. The production process of the physical foaming type RS485 communication bus cable according to claim 5, wherein one end of the rotating rod (17) penetrates through one side box wall of the physical foaming box (1) to be fixedly connected with a second driving wheel disc (21), the outer wall of the bottom of the physical foaming box (1) is fixedly connected with a second motor base (22), the inner wall of the second motor base (22) is fixedly connected with a second motor (23), the output end of the second motor (23) is connected with a short shaft through a coupler, the other end of the short shaft is fixedly connected with a second driving wheel disc (24), and a second belt (25) is arranged between the second driving wheel disc (24) and the plurality of second driving wheel discs (21).
7. The production process of the physical foaming type RS485 communication bus cable according to claim 6, wherein the other end of the rotating rod (17) penetrates through the other side wall of the physical foaming box (1) and is movably connected with a branch pipe (26) through a connector, the other ends of the branch pipes (26) are fixedly connected with the same drying box (27), the outer wall of the drying box (27) is fixedly connected with the physical foaming box (1), the outer wall of one side of the physical foaming box (1) is fixedly connected with a nitrogen making machine (28), the output end of the nitrogen making machine (28) is spirally connected with an air pipe (29), and the other end of the air pipe (29) is fixedly connected with the input end of the drying box (27).
8. The production process of the physical foaming type RS485 communication bus cable according to claim 1, characterized in that a rectangular groove is formed in the physical foaming box (1), the inner wall of the rectangular groove is fixedly connected with the booster pump (30), the inner walls of two sides of the physical foaming box (1) are respectively provided with a plurality of semicircular heating seats (31), the semicircular heating seats (31) are distributed at equal intervals, the inner wall of the physical foaming box (1) is fixedly connected with a plurality of equidistant electric heating tubes (32), two ends of the electric heating tubes (32) are respectively located inside the semicircular heating seats (31), and a soaking plate (33) is fixedly connected between the electric heating tubes (32) and the inner wall of the bottom of the physical foaming box (1).
9. The production process of the physical foaming type RS485 communication bus cable according to claim 8, wherein a feed opening is formed below the physical foaming box (1), a distribution control valve (34) is fixedly connected to the inner wall of the feed opening, a plurality of equidistant lower connectors are arranged below the distribution control valve (34), the lower connectors are fixedly connected with a tap (35), and an outer feeding pipe (36) is fixedly connected below the tap (35).
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| CN202210373257.6A CN114801013A (en) | 2022-04-11 | 2022-04-11 | Physical foaming type RS485 communication bus cable production process |
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Application publication date: 20220729 |