CN113402806A - Low-smoke halogen-free new energy automobile wire harness cable material and preparation process thereof - Google Patents
Low-smoke halogen-free new energy automobile wire harness cable material and preparation process thereof Download PDFInfo
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- CN113402806A CN113402806A CN202110676964.8A CN202110676964A CN113402806A CN 113402806 A CN113402806 A CN 113402806A CN 202110676964 A CN202110676964 A CN 202110676964A CN 113402806 A CN113402806 A CN 113402806A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/287—Raw material pre-treatment while feeding
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/52—Screws with an outer diameter varying along the longitudinal axis, e.g. for obtaining different thread clearance
- B29C48/525—Conical screws
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/84—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders by heating or cooling the feeding screws
- B29C48/845—Heating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a low-smoke halogen-free new energy automobile wire harness cable material and a preparation process thereof. The formula comprises the following raw materials: 10-30% of ethylene-vinyl acetate copolymer, 10-30% of ethylene-butyl acrylate copolymer, 5-30% of ethylene-octene copolymer, 5-30% of maleic anhydride grafted polyethylene, 30-60% of cyanuric acid melamine salt, 5-20% of organic silicon flame retardant, 1-5% of lubricant, 0.1-1% of silane coupling agent, 1-5% of antioxidant and 0.1-2% of crosslinking agent. The invention has the beneficial effects that: the flame-retardant polyurethane foam has good tensile property, tearing resistance and flame retardance, low combustion smoke amount, strong chemical and oil resistance and high safety; the filtering effect is good; on one hand, the jelly can be prevented from being solidified in the feeding box, the jelly can be ensured to smoothly flow into the working box, on the other hand, all materials in the jelly can be further mixed, the molding quality of a cable material product is effectively improved, and the safety is improved; the stirring effect is improved; the control is convenient, the structural design is optimized, and the working efficiency is improved.
Description
Technical Field
The invention relates to the related technical field of cable materials, in particular to a low-smoke halogen-free new energy automobile wire harness cable material and a preparation process thereof.
Background
At present, new energy vehicles are rapidly developed all over the world, but the problems exist more frequently, the quality problem is frequently exploded, in addition, consumers put higher requirements on the duration and the speed of the new energy vehicles, and the requirements are not implemented without the support of high-quality and high-performance wires and cables inside the new energy vehicles. The existing vehicle wire and cable material is easy to degrade due to aging, cracking and chemical reagent impregnation of the wire and cable, so that short circuit and fire are caused.
Disclosure of Invention
The invention provides a low-smoke halogen-free new energy automobile wire harness cable material with high safety and a preparation process thereof, aiming at overcoming the defect of low safety in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a low-smoke halogen-free new energy automobile wire harness cable material comprises the following formula raw materials in percentage by weight: 10-30% of ethylene-vinyl acetate copolymer, 10-30% of ethylene-butyl acrylate copolymer, 5-30% of ethylene-octene copolymer, 5-30% of maleic anhydride grafted polyethylene, 30-60% of cyanuric acid melamine salt, 5-20% of organic silicon flame retardant, 1-5% of lubricant, 0.1-1% of silane coupling agent, 1-5% of antioxidant and 0.1-2% of crosslinking agent.
The prepared cable material has good tensile property, tearing resistance and flame retardance, low combustion smoke generation amount, strong chemical and oil resistance and high safety through the synergistic cooperation promotion among the raw material components.
The invention also provides a preparation process of the low-smoke halogen-free new energy automobile wire harness cable material, which comprises the following steps:
preparing various components of raw materials according to mass percentage;
pouring all prepared raw materials into a high-speed mixer for mixing, wherein the working rotating speed is 1500 RPM-2000 RPM, and the mixing time is 10 min-15 min;
pouring the mixed mixture into an internal mixer for high-temperature fusion and internal mixing, wherein the internal mixing temperature is 120-160 ℃;
and step four, pouring the banburying jelly into extrusion equipment for extrusion to obtain a finished product of the wire harness cable material, and packaging the finished product after air cooling.
The cable material prepared from the raw material components by the method has the advantages of good tensile property, tear resistance, flame retardance, low combustion smoke amount, strong chemical and oil resistance and high safety.
Preferably, in the fourth step, the banburying gum is filtered by a filter before being poured into the extrusion equipment. The jelly is filtered by the filter, impurities and particles are filtered, the forming quality of the cable material product can be effectively improved, and the safety is improved.
Preferably, the number of filter screen layers of the filter is 2-3, the mesh number of the filter screen of the filter is 80-100 meshes, and the working temperature of the filter is 100-130 ℃. The filtering effect is good.
As preferred, the extrusion equipment includes the work box, be fixed with the feeding case on the top surface of work box, the inside of feeding case and the inside of work box are linked together, be equipped with on the interior top surface of feeding case and rotate the post, it rotates the connection to rotate post and feeding case, be fixed with a plurality of hob on rotating the lateral wall of post, install the stirring body on the hob, be equipped with on the stirring body with hob assorted internal thread hole, the stirring body passes through internal thread hole and hob swing joint, the inside of work box is equipped with extrudes the screw rod, the both ends of extruding the screw rod are installed respectively on the left and right sides wall of work box and are connected rather than rotating, be equipped with on the lateral wall of work box and extrude a plurality of discharge opening of screw rod assorted. A feed port is arranged on the side wall of the feed box, and filtered jelly enters the feed box through the feed port; a first rotating motor connected with the rotating column is fixed outside the feeding box; and a second rotating motor connected with the extrusion screw is fixed outside the working box. The rotating column and the screw rod on the rotating column are driven to rotate through the first rotating motor, the jelly in the feeding box can be continuously stirred, on one hand, the jelly can be prevented from being solidified in the feeding box, the jelly can be guaranteed to smoothly flow into the working box, on the other hand, all materials in the jelly can be further mixed, the forming quality of a cable material product is effectively improved, and the safety is improved. Through controlling the stirring body to carry out reciprocating motion on the hob, under the internal thread hole of the stirring body and the external thread fit of the hob, the stirring body can also rotate in the motion process, and the stirring effect is further improved. After the jelly flows into the working box, the extrusion screw rod is driven to rotate through the second rotating motor, the jelly can be conveyed to the discharge hole to be extruded, and a finished product of the wire harness cable material is obtained.
Preferably, all the screw rods are distributed in an annular mode about the rotating column and are located on the same horizontal plane, an acute angle is formed between each screw rod and the rotating column, a first sliding sleeve is sleeved on the rotating column, a first sliding block is fixed on the inner side wall of the first sliding sleeve which is arranged above each screw rod, a first sliding groove matched with the first sliding block is formed in the side wall of the rotating column, the first sliding sleeve is in sliding connection with the rotating column through the matching of the first sliding block and the first sliding groove, a second sliding sleeve is sleeved on each screw rod, the second sliding sleeve is located between the stirring body and the first sliding sleeve, a second sliding block is fixed on the inner side wall of the second sliding sleeve, a second sliding groove matched with the second sliding block is formed in the side wall of each screw rod, the second sliding sleeve is in sliding connection with each screw rod through the matching of the second sliding block and the second sliding groove, a transmission rod is arranged between the first sliding sleeve and the second sliding sleeve, one end of the transmission rod is installed on the outer side wall of the first sliding sleeve and hinged to the first sliding sleeve, the other end of transfer line is installed on the lateral wall of sliding sleeve two and rather than articulated, sliding sleeve two is fixed with annular installation piece on being close to the lateral wall of stirring body one end, be equipped with on the stirring body with annular installation piece assorted annular mounting groove, annular mounting groove is located the opening part in internal thread hole, the sliding sleeve is installed on the stirring body and is connected with the rotation of the stirring body through the cooperation of annular installation piece and annular mounting groove. Through the design of the first sliding block and the first sliding groove, the first sliding sleeve plays a role in guiding and limiting sliding on the rotating column; through the design of the second sliding block and the second sliding groove, the second sliding sleeve plays a role in guiding and limiting the second sliding sleeve on the screw rod; through the design of annular installation piece and annular installation groove, make things convenient for the relative rotation to take place between slip cover two and the stirring body. Carry out reciprocating sliding on rotating the post through control sliding sleeve one, under the transmission of transfer line, can drive sliding sleeve two and also carry out synchronous reciprocating sliding on the hob, and then realize driving the stirring body and carry out reciprocating motion's purpose on the hob, carry out continuous intensive mixing to the colloid in the feed box, can prevent that the colloid from taking place the solidification phenomenon in the feed box on the one hand, guarantee that the colloid can flow into the work box smoothly, on the other hand then can make each material in the colloid further mix, the effectual shaping quality that improves cable material product, the security is improved. In order to ensure the smooth operation, the acute angle between the screw rod and the rotating column is less than 45 degrees, and the angle of the spiral line on the screw rod is more than 45 degrees.
As preferred, be equipped with the cover body on the interior top surface of feed box, the outside of rotating the post is arranged in to the cover body, the terminal surface of cover body upper end is the horizontal plane and fixes on the interior top surface of feed box, the terminal surface of cover body lower extreme is the inclined plane, be equipped with the guide bar on the sliding sleeve one, the one end of guide bar is fixed on the terminal surface of sliding sleeve one upper end, the other end of guide bar and the terminal surface of cover body lower extreme contact, the cover is equipped with reset spring on the rotation post, reset spring arranges in between sliding sleeve one and the hob. When the rotation post rotates, can drive sliding sleeve one and the guide bar on it and carry out synchronous rotation, at the pivoted in-process as the guide bar, under reset spring's elasticity effect, its top contacts and moves along the inclined plane with the inclined plane of cover body lower extreme all the time, and then realizes driving sliding sleeve one purpose of reciprocating sliding from top to bottom. The control is convenient, the structural design is optimized, and the working efficiency is improved.
Preferably, the extrusion screw is divided into a conveying section, a compression section and a metering section from right to left, the depth of a screw groove of the compression section is gradually reduced from right to left, the depth of the screw groove of the conveying section is equal to that of the screw groove at the rightmost end of the compression section, and the depth of the screw groove of the metering section is equal to that of the screw groove at the leftmost end of the compression section. The conveying section plays a role in conveying and compacting jelly; the compression section plays a role in plasticizing jelly, and the change of the material state is adapted through the design of the depth of a spiral groove of the compression section; the metering section serves to mix and homogenize the material.
Preferably, an induction coil matched with the extrusion screw is arranged in the side wall of the working box, the extrusion screw is arranged on the inner side of the induction coil, the induction coil comprises a conveying section coil, a compression section coil and a metering section coil which are respectively matched with the conveying section, the compression section and the metering section, the number of turns of the conveying section coil is smaller than that of the compression section coil, and the number of turns of the compression section coil is smaller than that of the metering section coil. The power supply device for controlling the induction coil to be electrified is arranged on the work box, and the heating of the extrusion screw rod is realized through the electromagnetic induction heating principle, so that the jelly is heated. The temperature of the conveying section is lower than that of the compression section, the temperature of the compression section is lower than that of the metering section, so that the jelly can be preheated by the conveying sections respectively, the jelly can be heated and plasticized by the conveying sections, and the plasticizing temperature of the jelly can be kept by the metering section.
Preferably, a supporting table is arranged on the outer top surface of the working box, the supporting table is arranged above the right end of the conveying section, the feeding box is fixed on the supporting table, a supporting table through hole communicated with the inside of the working box is formed in the upper end surface of the supporting table, a material guide pipe matched with the supporting table through hole is fixed on the outer bottom surface of the feeding box, the material guide pipe is arranged inside the supporting table through hole and fixedly connected with the material guide pipe, the inside of the feeding box is communicated with the material guide pipe, a spiral propelling block is fixed at the bottom end of the rotating column and arranged on the inner side of the material guide pipe, and all the discharge holes are arranged on the left side wall of the working box and located on the side face of the extrusion screw rod. When the rotating column rotates, the spiral propelling block is driven to rotate together, jelly in the feeding box is conveyed into the working box through the material guide pipe, and the spiral propelling block plays a role in guiding and propelling the jelly in the conveying process. And heating and extruding the jelly through an extrusion screw in the working box, and then extruding the jelly from a discharge hole in the left side wall to obtain a finished product of the wire harness cable material.
The invention has the beneficial effects that: the flame-retardant polyurethane foam has good tensile property, tearing resistance and flame retardance, low combustion smoke amount, strong chemical and oil resistance and high safety; the molding quality of the cable material product is improved, and the safety is improved; the filtering effect is good; on one hand, the jelly can be prevented from being solidified in the feeding box, the jelly can be ensured to smoothly flow into the working box, on the other hand, all materials in the jelly can be further mixed, the molding quality of a cable material product is effectively improved, and the safety is improved; the stirring effect is improved; the control is convenient, the structural design is optimized, and the working efficiency is improved.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a left side view of the present invention;
FIG. 4 is a cross-sectional view taken at A-A of FIG. 2;
FIG. 5 is a schematic view of the structure of the rotating column of FIG. 4;
FIG. 6 is a schematic view of the internal structure at B in FIG. 4;
fig. 7 is a schematic view of the internal structure at C in fig. 5.
In the figure: 1. the device comprises a working box, 2, a feeding box, 3, an extrusion screw, 4, an induction coil, 5, a support table, 6, a spiral propelling block, 7, a material guide pipe, 8, a rotating column, 9, a conveying section, 10, a conveying section coil, 11, a compression section, 12, a compression section coil, 13, a metering section, 14, a metering section coil, 15, a discharge hole, 16, a sliding sleeve I, 17, a reset spring, 18, a transmission rod, 19, a screw rod, 20, a guide rod, 21, a sleeve body, 22, a sliding chute I, 23, a sliding block I, 24, a stirring body, 25, an internal threaded hole, 26, a sliding sleeve II, 27, a sliding chute II, 28, a sliding block II, 29, an annular mounting block and 30, an annular mounting groove.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
A low-smoke halogen-free new energy automobile wire harness cable material comprises the following formula raw materials in percentage by weight: 20 percent of ethylene-vinyl acetate copolymer, 20 percent of ethylene-butyl acrylate copolymer, 10 percent of ethylene-octene copolymer, 10 percent of maleic anhydride grafted polyethylene, 30 percent of melamine cyanurate, 5 percent of organosilicon flame retardant, 1 percent of lubricant, 0.5 percent of silane coupling agent, 3 percent of antioxidant and 0.5 percent of crosslinking agent.
The invention also provides a preparation process of the low-smoke halogen-free new energy automobile wire harness cable material, which comprises the following steps:
preparing various components of raw materials according to mass percentage;
pouring all prepared raw materials into a high-speed mixer for mixing, wherein the working rotating speed is 1500RPM, and the mixing time is 15 min;
step three, pouring the mixed mixture into an internal mixer for high-temperature fusion and internal mixing, wherein the internal mixing temperature is 160 ℃;
and step four, pouring the banburying jelly into extrusion equipment for extrusion to obtain a finished product of the wire harness cable material, and packaging the finished product after air cooling.
In the fourth step, the banburying jelly is filtered by a filter before being poured into the extrusion equipment.
The number of the filter screen layers of the filter is 3, the mesh number of the filter screen of the filter is 100, and the working temperature of the filter is 130 ℃.
In the embodiment shown in fig. 1, 2 and 3, the extrusion device includes a working box 1, a feeding box 2 is fixed on the top surface of the working box 1, the inside of the feeding box 2 is communicated with the inside of the working box 1, as shown in fig. 4, a rotating column 8 is installed on the inner top surface of the feeding box 2, the rotating column 8 is rotatably connected with the feeding box 2, as shown in fig. 5, a plurality of spiral rods 19 are fixed on the side wall of the rotating column 8, as shown in fig. 7, a stirring body 24 is installed on the spiral rods 19, an internal threaded hole 25 matched with the spiral rods 19 is formed in the stirring body 24, and the stirring body 24 is movably connected with the spiral rods 19 through the internal threaded hole 25.
As shown in fig. 4, an extrusion screw 3 is arranged inside the working box 1, two ends of the extrusion screw 3 are respectively installed on the left and right side walls of the working box 1 and are rotatably connected with the same, and a plurality of discharge holes 15 matched with the extrusion screw 3 are arranged on the side walls of the working box 1.
As shown in fig. 5, all the screw rods 19 are distributed annularly about the rotating column 8 and are located on the same horizontal plane, an acute angle is formed between the screw rods 19 and the rotating column 8, a sliding sleeve i 16 is sleeved on the rotating column 8, as shown in fig. 6, the sliding sleeve i 16 is arranged above the screw rods 19 and is fixed with a sliding block i 23 on the inner side wall thereof, a sliding slot i 22 matched with the sliding block i 23 is arranged on the side wall of the rotating column 8, the sliding sleeve i 16 is in sliding connection with the rotating column 8 through the matching of the sliding block i 23 and the sliding slot i 22, as shown in fig. 7, a sliding sleeve i 26 is sleeved on the screw rods 19 and is located between the stirring body 24 and the sliding sleeve i 16 and is fixed with a sliding block ii 28 on the inner side wall thereof, a sliding slot ii 27 matched with the sliding block ii 28 is arranged on the side wall of the screw rods 19, the sliding sleeve i 26 is in sliding connection with the screw rods 19 through the matching of the sliding block ii 28 and the sliding slot ii 27, as shown in fig. 5 and 7, a transmission rod 18 is arranged between the first sliding sleeve 16 and the second sliding sleeve 26, one end of the transmission rod 18 is mounted on and hinged to the outer side wall of the first sliding sleeve 16, the other end of the transmission rod 18 is mounted on and hinged to the outer side wall of the second sliding sleeve 26, an annular mounting block 29 is fixed on the outer side wall of one end of the second sliding sleeve 26 close to the stirring body 24, an annular mounting groove 30 matched with the annular mounting block 29 is formed in the stirring body 24, the annular mounting groove 30 is located at the opening of the internal threaded hole 25, and the second sliding sleeve 26 is mounted on the stirring body 24 through matching of the annular mounting block 29 and the annular mounting groove 30 and is rotatably connected with the stirring body 24.
As shown in fig. 4 and 6, a sleeve body 21 is arranged on the inner top surface of the feeding box 2, the sleeve body 21 is arranged on the outer side of the rotating column 8, the end surface of the upper end of the sleeve body 21 is a horizontal plane and is fixed on the inner top surface of the feeding box 2, the end surface of the lower end of the sleeve body 21 is an inclined plane, a guide rod 20 is arranged on the sliding sleeve I16, one end of the guide rod 20 is fixed on the end surface of the upper end of the sliding sleeve I16, the other end of the guide rod 20 is in contact with the end surface of the lower end of the sleeve body 21, as shown in fig. 5, a return spring 17 is sleeved on the rotating column 8, and the return spring 17 is arranged between the sliding sleeve I16 and the spiral rod 19.
As shown in fig. 4, the extrusion screw 3 is divided into a conveying section 9, a compression section 11 and a metering section 13 from right to left, the depth of the screw groove of the compression section 11 is gradually reduced from right to left, the depth of the screw groove of the conveying section 9 is equal to that of the screw groove at the rightmost end of the compression section 11, and the depth of the screw groove of the metering section 13 is equal to that of the screw groove at the leftmost end of the compression section 11.
As shown in fig. 4, an induction coil 4 matched with the extrusion screw 3 is arranged inside the side wall of the working box 1, the extrusion screw 3 is arranged inside the induction coil 4, the induction coil 4 comprises a conveying section coil 10, a compression section coil 12 and a metering section coil 14 which are respectively matched with a conveying section 9, a compression section 11 and a metering section 13, the number of turns of the conveying section coil 10 is smaller than that of the compression section coil 12, and the number of turns of the compression section coil 12 is smaller than that of the metering section coil 14.
As shown in fig. 4, be equipped with a supporting bench 5 on the outer top surface of work box 1, a supporting bench 5 is arranged in the top of conveying section 9 right-hand member, feeding box 2 is fixed on a supporting bench 5, the up end of supporting bench 5 is equipped with a supporting bench through-hole that is linked together with the inside of work box 1, be fixed with on the outer bottom surface of feeding box 2 with a supporting bench through-hole assorted passage 7, the inside of a supporting bench through-hole is arranged in to passage 7 and rather than fixed connection, the inside and the passage 7 of feeding box 2 are linked together, the bottom mounting who rotates post 8 has screw propulsion piece 6, the inboard of passage 7 is arranged in to screw propulsion piece 6, all discharge openings 15 all are arranged in on the left side wall of work box 1 and all are located the side.
The working principle is as follows:
the filtered jelly enters the feeding box 2 through the feeding hole, and the rotating column 8 and the extrusion screw 3 both rotate at the same time. The rotating column 8 can drive the spiral propelling block 6 to synchronously rotate when rotating, jelly in the feeding box 2 is conveyed to the working box 1 under the guiding and propelling effects of the spiral propelling block 6, and is extruded from the discharge hole 15 on the left side wall after being heated and extruded by the extruding screw 3 in the working box 1, so that a finished product of the wire harness cable material is obtained.
When rotating post 8 and rotating, can drive hob 19 on it and rotate, can constantly stir the colloid in feed box 2, can prevent on the one hand that the colloid from taking place the solidification phenomenon in feed box 2, guarantee that the colloid can flow into work box 1 smoothly, on the other hand then can make each material in the colloid further mix, the effectual shaping quality that improves the cable material product improves the security.
During the rotation of the rotating column 8, the first sliding sleeve 16 and the guide rod 20 thereon are driven to rotate synchronously. When guide bar 20 is when rotating, under reset spring 17's elasticity effect, its top contacts and moves along the inclined plane with the inclined plane of the cover body 21 lower extreme all the time, and then drive slip cap 16 and reciprocate from top to bottom on rotating post 8, the transmission effect of rethread transfer line 18, drive slip cap two 26 and stirring body 24 also carry out synchronous reciprocal slip on hob 19, improve stirring effect (under the internal thread hole 25 of stirring body 24 and the external screw thread cooperation of hob 19, stirring body 24 also can rotate at motion in-process self, can further improve stirring effect).
Claims (10)
1. A low-smoke halogen-free new energy automobile wire harness cable material is characterized by comprising the following formula raw materials in percentage by weight: 10-30% of ethylene-vinyl acetate copolymer, 10-30% of ethylene-butyl acrylate copolymer, 5-30% of ethylene-octene copolymer, 5-30% of maleic anhydride grafted polyethylene, 30-60% of cyanuric acid melamine salt, 5-20% of organic silicon flame retardant, 1-5% of lubricant, 0.1-1% of silane coupling agent, 1-5% of antioxidant and 0.1-2% of crosslinking agent.
2. A preparation process of a low-smoke halogen-free new energy automobile wire harness cable material is characterized by comprising the following steps:
preparing various components of raw materials according to mass percentage;
pouring all prepared raw materials into a high-speed mixer for mixing, wherein the working rotating speed is 1500 RPM-2000 RPM, and the mixing time is 10 min-15 min;
pouring the mixed mixture into an internal mixer for high-temperature fusion and internal mixing, wherein the internal mixing temperature is 120-160 ℃;
and step four, pouring the banburying jelly into extrusion equipment for extrusion to obtain a finished product of the wire harness cable material, and packaging the finished product after air cooling.
3. The preparation process of the low-smoke zero-halogen new energy automobile wire harness cable material according to claim 2, characterized in that in the fourth step, the banburying jelly is filtered by a filter before being poured into an extrusion device.
4. The preparation process of the low-smoke zero-halogen new energy automobile wire harness cable material according to claim 3, characterized in that the number of filter screen layers of the filter is 2-3, the number of filter screen layers of the filter is 80-100 meshes, and the working temperature of the filter is 100-130 ℃.
5. The preparation process of a low smoke and zero halogen new energy automobile pencil cable material of claim 2, characterized by, extrusion equipment includes work box (1), be fixed with feed box (2) on the top surface of work box (1), the inside of feed box (2) is linked together with the inside of work box (1), install on the interior top surface of feed box (2) and rotate post (8), it rotates with feed box (2) to rotate post (8), be fixed with a plurality of hob (19) on the lateral wall of rotation post (8), install stirring body (24) on hob (19), be equipped with on stirring body (24) with hob (19) assorted internal thread hole (25), stirring body (24) are through internal thread hole (25) and hob (19) swing joint, the inside of work box (1) is equipped with extrudes screw rod (3), the two ends of the extrusion screw (3) are respectively installed on the left side wall and the right side wall of the working box (1) and are rotationally connected with the working box, and a plurality of discharge holes (15) matched with the extrusion screw (3) are formed in the side wall of the working box (1).
6. The preparation process of a low smoke and zero halogen new energy automobile pencil cable material of claim 5, characterized by, all hob (19) are the annular distribution and all are located same horizontal plane about rotating post (8), be the acute angle between hob (19) and the rotation post (8), it is equipped with sliding sleeve (16) to rotate the cover on post (8), sliding sleeve (16) are arranged in the top of hob (19) and are fixed with slider (23) on its inside wall, be equipped with on the lateral wall of rotation post (8) with slider (23) assorted spout (22), sliding sleeve (16) through the cooperation of slider (23) and spout (22) and rotate post (8) sliding connection, the cover is equipped with sliding sleeve (26) on hob (19), sliding sleeve (26) are located between stirring body (24) and sliding sleeve (16) and are fixed with slider (28) on its inside wall, the side wall of the screw rod (19) is provided with a second sliding groove (27) matched with the second sliding block (28), the second sliding sleeve (26) is in sliding connection with the screw rod (19) through the matching of the second sliding block (28) and the second sliding groove (27), a transmission rod (18) is arranged between the first sliding sleeve (16) and the second sliding sleeve (26), one end of the transmission rod (18) is installed on the outer side wall of the first sliding sleeve (16) and is hinged with the first sliding sleeve, the other end of the transmission rod (18) is installed on the outer side wall of the second sliding sleeve (26) and is hinged with the second sliding sleeve, an annular installation block (29) is fixed on the outer side wall of one end, close to the stirring body (24), of the second sliding sleeve (26), an annular installation groove (30) matched with the annular installation block (29) is arranged on the stirring body (24), and the annular installation groove (30) is positioned at an opening of the internal thread hole (25), and the second sliding sleeve (26) is arranged on the stirring body (24) through the matching of the annular mounting block (29) and the annular mounting groove (30) and is rotationally connected with the stirring body (24).
7. The preparation technology of a low smoke and zero halogen new energy automobile pencil cable material of claim 6, characterized by, be equipped with cover body (21) on the interior top surface of feed box (2), the outside of rotating post (8) is arranged in cover body (21), the terminal surface of cover body (21) upper end is the horizontal plane and fixes on the interior top surface of feed box (2), the terminal surface of cover body (21) lower extreme is the inclined plane, be equipped with guide bar (20) on sliding sleeve (16), the one end of guide bar (20) is fixed on the terminal surface of sliding sleeve (16) upper end, the other end of guide bar (20) and the terminal surface of cover body (21) lower extreme contact, it is equipped with reset spring (17) to rotate to overlap on post (8), reset spring (17) are arranged in between sliding sleeve (16) and hob (19).
8. The preparation process of a low smoke and zero halogen new energy automobile pencil cable material of claim 5, characterized by, extrude screw rod (3) to divide into from the right side to the left side and carry section (9), compression section (11) and measurement section (13), the thread groove depth of compression section (11) is turned left from the right side and is reduced gradually, the thread groove depth of carry section (9) and the thread groove depth of compression section (11) rightmost end equal, the thread groove depth of measurement section (13) and the thread groove depth of compression section (11) leftmost end equal.
9. The preparation technology of a low smoke and zero halogen new energy automobile pencil cable material of claim 8, characterized by, the inside of work box (1) lateral wall is equipped with and extrudes screw rod (3) assorted induction coil (4), extrude screw rod (3) and arrange induction coil (4) in inboard, induction coil (4) including respectively with carry section (9), compression section (11), measurement section (13) assorted transport section coil (10), compression section coil (12), measurement section coil (14), the coil number of turns of carrying section coil (10) is less than the coil number of turns of compression section coil (12), the coil number of turns of compression section coil (12) is less than the coil number of turns of measurement section coil (14).
10. The preparation process of a low smoke and zero halogen new energy automobile wire harness cable material according to claim 8, characterized by, be equipped with a supporting bench (5) on the outer top surface of work box (1), the top of carrying section (9) right-hand member is arranged in to supporting bench (5), feeding case (2) are fixed on supporting bench (5), the up end of supporting bench (5) is equipped with the supporting bench through-hole that is linked together with the inside of work box (1), be fixed with on the outer bottom surface of feeding case (2) and prop up supporting bench through-hole assorted passage (7), inside and rather than fixed connection of supporting bench through-hole are arranged in to passage (7), the inside and the passage (7) of feeding case (2) are linked together, the bottom mounting who rotates post (8) has screw propulsion piece (6), the inboard of passage (7) is arranged in to screw propulsion piece (6), all the discharge holes (15) are arranged on the left side wall of the working box (1) and are positioned on the side surface of the extrusion screw (3).
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| CN202110676964.8A CN113402806A (en) | 2021-06-18 | 2021-06-18 | Low-smoke halogen-free new energy automobile wire harness cable material and preparation process thereof |
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| CN202110676964.8A CN113402806A (en) | 2021-06-18 | 2021-06-18 | Low-smoke halogen-free new energy automobile wire harness cable material and preparation process thereof |
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| CN113402806A true CN113402806A (en) | 2021-09-17 |
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