CN108000835B - A kind of multi-layer co-extruded device and its application method - Google Patents
A kind of multi-layer co-extruded device and its application method Download PDFInfo
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- CN108000835B CN108000835B CN201711215018.3A CN201711215018A CN108000835B CN 108000835 B CN108000835 B CN 108000835B CN 201711215018 A CN201711215018 A CN 201711215018A CN 108000835 B CN108000835 B CN 108000835B
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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
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
- B29C48/336—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die
- B29C48/3366—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die using a die with concentric parts, e.g. rings, cylinders
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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
- B29C48/025—General arrangement or layout of plant
-
- 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
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/154—Coating solid articles, i.e. non-hollow articles
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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
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
-
- 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
- B29C48/30—Extrusion nozzles or dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3462—Cables
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention discloses a kind of multi-layer co-extruded device and its application method, the multi-layer co-extruded device includes head, active paying out machine, conductor draw drum, dancing wheel, heater, co-extruding machine head, thermostatic water bath, traction device and take-up reel, the co-extruding machine head includes compound die group, shell, preceding gland and rear pressing cover, the compound die group includes mold core support sleeve, inlet wire positioning module, inner conductor layer mould group, PTC layers of mould group and insulating layer mould group, the PTC layers of mould group includes PCT package mould and stock mould, first annular boss is arranged in the mould group position PTC layers of in the mold core support sleeve, the first linkage portion is arranged in the PCT package mould and the first annular boss cooperates, the PCT package mould is slidably connected with the stock mould；The present invention realizes the reverse rotation of the PTC layers of mould group and the insulating layer mould group, keeps the fixation between PTC heater layer, composite insulation layer even closer by the setting of the first gear group and the second gear group.
Description
Technical field
The present invention relates to wire and cable manufacturing equipment fields, and in particular to a kind of multi-layer co-extruded device and its application method.
Background technique
For heating cable, cable industry generally uses three layer coextruding device at home, and domestic some producers are also joined
The three layer coextruding device for being admitted to mouth is manufactured.And for commonly used in fields such as communication, petrochemical industry and household electrical appliance
Double-core double-layer structure ribbon cable, import and domestic some producers mostly use the head of annular feeding-passage three layer coextruding device
Manufactured, generally by layering repeated processing coating production technology first by two-chip structure be respectively coated by upper one layer it is compound
Object coats two layers or more compounds again；If elder generation coats out one layer of coating on conductor, first layer packet then will have been coated again
The both threads core releasing for covering object coats second layer coating again, then successively coats again.The shortcomings that this technique is repeatedly to wrap
Compressing mold is such as used when wrapping up in compound, internal model is easy to scratch first layer coating, and holds because repeatedly coating every layer of coating
It is easily contaminated, and position inaccurate easily eccentric；If relying primarily on the characteristic of wrappage material itself using pipe die is squeezed to realize
Wrappage and metal inside, PTC inner core generate good fixation, but this fixation at present is not very firm, still can
Between when in use the case where too long rear appearance short circuit, mismatch.
In view of the above drawbacks, creator of the present invention obtains the present invention by prolonged research and practice finally.
Summary of the invention
To solve above-mentioned technological deficiency, the technical solution adopted by the present invention is, provides a kind of multi-layer co-extruded device, described
Multi-layer co-extruded device includes head, active paying out machine, conductor draw drum, dancing wheel, and heater, thermostatic water bath, is led co-extruding machine head
Leading-in device and take-up reel, the co-extruding machine head include compound die group, shell, preceding gland and rear pressing cover, and the compound die group includes
Mold core support sleeve, inlet wire positioning module, inner conductor layer mould group, PTC layers of mould group and insulating layer mould group, equipped with described in the shell
Mold core support sleeve is provided with the duct with annular convex platform, the inlet wire positioning module, the inner conductor in the mold core support sleeve
Layer mould group, the PTC layers of mould group and the insulating layer mould group are successively mounted in the duct, mold core support sleeve both ends difference
It is fixed with the preceding gland and rear pressing cover positioning；The PTC layers of mould group includes PCT package mould and stock mould, the mold core
First annular boss is arranged in the mould group position PTC layers of in support sleeve, and the first linkage portion and described the is arranged in the PCT package mould
The cooperation of one annular convex platform, the PCT package mould are slidably connected with the stock mould.
Preferably, PCT package mould setting at PCT package mould with the stock mould link position is first annular
Notch, the stock mould are equipped with first annular portion, pass through the cooperation of the first annular notch and the first annular portion
The coaxial arrangement for realizing PCT the package mould and the stock mould is set.
Preferably, the insulating layer mould group includes insulation package mould and wire finishing die, the mold core support sleeve is in the insulation
The second annular convex platform is arranged in layer mould group position, and the insulation package mould is arranged the second linkage portion and matches with second annular convex platform
It closes, the insulation package mould is connect with the wire finishing die.
Preferably, first linkage portion and second linkage portion are the gear teeth that annular is evenly arranged, it is described compound
Mould group further includes the second brake assemblies, and second brake assemblies include first gear group, second gear group, the second motor and system
Moving axis, the brake axle are fixed on the output shaft of second motor, and the first gear group and the second gear group are solid
It is scheduled on the brake axle, the first gear group and first linkage portion are equipped with, the second gear group and described
Second linkage portion is equipped with.
Preferably, the first gear group includes the first gear being fixed on the brake axle, second tooth
Wheel group include the second gear being fixed on the brake axle and one simultaneously with the second gear, described second
The third gear of linkage portion gear connection, the third gear are arranged on the mold core support sleeve.
Preferably, gap is arranged in the marginal portion of inlet wire positioning module discharging end face and the first annular boss,
PCT material for the first flowing lumen, the molten condition enters in PCT package mould through first flowing lumen；It is described into
The discharge end center of line positioning module extends to form raised land into PCT package mould, is the first distributary division.
Preferably, the calculation formula of the first distributary division thickness h is,
Wherein, D1For basal diameter of first distributary division on the inlet wire positioning module, D2It is shunted for described first
Portion protrudes into the end face diameter of the PCT package mould；D3The interior circular diameter of mould feed end is wrapped up for the PCT；D4For the PCT packet
Wrap up in the interior circular diameter of mould discharge end；L is the distance of first flowing lumen；L is the length that the PCT wraps up mould.
Preferably, a kind of application method using the multi-layer co-extruded device, including step,
S1 is debugged and is installed the co-extruding machine head；
S2 actively releases two metal insides from the active paying out machine and the draw drum, is tensioned through the dancing wheel
After heater heating, into the co-extruding machine head；
S3, the metal inside carry out package operation in the co-extruding machine head；
S4, the metal inside are completed after package operation again after the thermostatic water bath is cooling, by the traction device and
The take-up reel is kept well.
Preferably, the specific steps are analyze the specification for the heating cable to be made, selection meets manufacturing conditions and matches to S1
The mold core support sleeve, the inlet wire positioning module, the inner conductor layer mould group, the PTC layers of mould group and the insulation of set
Layer mould group；PCT package mould is installed to the mold core support sleeve from the mold core support sleeve discharge end, and pass through by
The stock mould is fixedly mounted on the position restriction realized in the mold core support sleeve to PCT package mould, in outside to institute
It states the first linkage portion and applies power, detect whether the PCT package mould can avoid the PCT package mould stuck with normal rotation
The damage of second motor and the first gear group described in when causing normal use；It similarly installs and tests the insulation package mould
With the wire finishing die.
Preferably, the specific steps are the PCT package mould and insulation package mould are in second brake assemblies by S3
Effect is lower to generate rotation, and under the deflector effect being arranged in the PTC layers of mould group and the insulating layer mould group, molten
The PCT material and the insulating materials under state generate more violent rotation, make to be wrapped in molten on the metal inside
Melt material also to rotate, further shaping plasticized formation is fine and close in the stock mould, the wire finishing die for the melted material
And with the compact PTC heater layer of a upper wrapping layer, composite insulation layer.
Compared with the prior art the beneficial effects of the present invention are: 1, by the compound die group realize to metal inside into
Row inner conductor layer, PTC heater layer, composite insulation layer disposable package, and pass through first linkage portion and described second
The braking effect of linkage portion causes the rotation for melting lapping to make the lapping fit closely；2, pass through described
One helical gear realizes the rotation of the adjacent rotation mould, so that metal inside is during wrapping up the inner conductor layer,
The inner conductor layer of package is set a degree of rotation also occur；3, pass through setting for the first gear group and the second gear group
It sets, realizes the reverse rotation of the PTC layers of mould group and the insulating layer mould group, make between PTC heater layer, composite insulation layer
Fixation is even closer.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the topology view of the co-extruding machine head；
Fig. 3 is the topology view (facing) of the compound die group；
Fig. 4 is the topology view (vertical view) of the compound die group；
Fig. 5 is the connection view of the inner conductor layer mould group；
Fig. 6 is the part connection view of the inner conductor layer mould group；
Fig. 7 is the part connection view of the PTC layers of mould group；
Fig. 8 is the part connection view of the insulating layer mould group.
Digital representation in figure:
1- compound die group；2- shell；Gland before 3-；4- rear pressing cover；11- mold core support sleeve；12- inlet wire positioning module；13-
Inner conductor layer mould group；14-PTC layers of mould group；15- insulating layer mould group；The first feeding-passage of 16-；The second feeding-passage of 17-；18-
Three feeding-passages；The second brake assemblies of 19-；The first annular boss of 111-；The second annular convex platform of 112-；121- inlet wire mould；122-
Positioning mould；131- stent；132- rotates mould；The rotation section 133-；134- forming part；135- braking parts；The second helical gear of 136-；
141-PCT wraps up mould；142- stock mould；The first annular portion 143-；The first linkage portion of 144-；151- insulation package mould；152- goes out
Line mould；The second ring part of 153-；The second linkage portion of 154-；100- active paying out machine；200- draw drum；300- dancing wheel；400-
Heater；500- co-extruding machine head；600- inner conductor extruder；700-PTC extruder；800- insulation extrusion machine；900- constant temperature
Water tank；1000- traction device；1100- take-up reel；1200- metal inside.
Specific embodiment
Below in conjunction with attached drawing, the forgoing and additional technical features and advantages are described in more detail.
Embodiment one
As shown in FIG. 1, FIG. 1 is overall structure diagram of the invention, the multi-layer co-extruded device include active paying out machine,
Draw drum, dancing wheel, heater, co-extruding machine head, plastic extruder, constant temperature water tank, traction device, take-up reel.Described in two
Active paying out machine 100 and two draw drums 200 actively release two metal insides 1200, are tensioned through the dancing wheel 300
With the heater 400 heating after, into the co-extruding machine head 500 between three plastic extruders in disposably wrapped
After being covered with inner conductor layer, PTC heater layer, composite insulation layer, then after the thermostatic water bath 900 is cooling, filled by the traction
Set 1000 and the take-up reel 1100 keep well.The tensile force of two metal insides 1200 should keep one in the production process
It causes；The plastic extruder is respectively inner conductor extruder 600, PTC extruder 700, insulation extrusion machine 800.
As shown in Fig. 2, Fig. 2 is the co-extruding machine head topology view of the multi-layer co-extruded device of the present invention.It is in the prior art
The co-extruding machine head, mainly includes compound die group 1, shell 2, preceding gland 3 and rear pressing cover 4, and the compound die group 1 includes mold core branch
Support set 11, inlet wire positioning module 12, inner conductor layer mould group 13, PTC layers of mould group 14 and insulating layer mould group 15 fill in the shell 2
There is the mold core support sleeve 11, the duct with annular convex platform, the inlet wire positioning module are provided in the mold core support sleeve 11
12, the inner conductor layer mould group 13, the PTC layers of mould group 14 and described 15 4 pieces of molds of insulating layer mould group are successively mounted in the hole
In road, 11 both ends of mold core support sleeve are fixed with the preceding gland 3 and the positioning of the rear pressing cover 4 respectively, are set on the shell 2
Three feeding assemblies are set, three feeding-passages are arranged in the co-extruding machine head, and the feeding assembly passes through the feeding-passage respectively
Across the shell 2, the mold core support sleeve 11, with the inner conductor layer mould group 13, the PTC layers of mould group 14 and the insulation
Layer mould group 15 communicates, and the feeding assembly is connected to the plastic extruder respectively.
It is fixed between the shell 2 and the mold core support sleeve 11 with pin.
First feeding-passage 16 is arranged on the inlet wire positioning module 12, and the setting of the second feeding-passage 17 interior is led described
Between body layer mould group 13 and the PTC layers of mould group 14, third feeding-passage 18 is arranged in the PTC layers of mould group 14 and the insulation
Between layer mould group 15.
Part of first feeding-passage 16 on the shell 2 is communicated with first feeding assembly, and described second
Part of the feeding-passage 17 on the shell 2 is communicated with second feeding assembly, and the third feeding-passage 18 is described
Part on shell 2 is communicated with the third feeding assembly.
In process, the cable metal inner core of two cores, three layers of cable enters from the opening of the inlet wire positioning module 12
In the first melt space formed between the inlet wire positioning module 12 and the inner conductor layer mould group 13, first melting is empty
Between in have the inner conductor layer material of molten condition, the metal inside is from the inlet wire positioning module 12 and the inner conductor layer mould
After wrapping up the inner conductor layer material in the first melt space formed between group 13, along the opening of the inner conductor layer mould group 13
Into the second melt space formed between the inner conductor layer mould group 13 and the PTC layers of mould group 14, second melting is empty
Between in have the PTC of molten condition, similarly, last insulating layer be wrapped in using similar method be wrapped inner conductor layer with
On PTC layers of cable.And first feeding-passage 16 passes through for the inner conductor layer melted material, and it is molten to inject described first
Melt space, second feeding-passage 17, the third feeding-passage 18 enter for the ptc material of melting and insulating materials respectively
Second melt space and the third melt space.
Embodiment two
As shown in figure 3, Fig. 3 is the topology view (facing) of compound die group of the present invention, the inlet wire positioning module 12
Including inlet wire mould 121 and positioning mould 122.
The feed end of the mold core support sleeve 11 is arranged in the inlet wire mould 121, and the inlet wire mould 121 is according to heating cable
Several through-holes are arranged in inner core quantity, and the present embodiment is arranged two, and the positioning mould 122 is arranged in the through-hole, the positioning
Mould 122 is preferably arranged to cylindrical body, and location hole is arranged in the positioning mould 122, and the metal inside is arranged in the location hole
Interior, the positioning mould 122 is fixedly connected with the inlet wire mould 121 by pin or bolt etc., can be had by replacement different straight
The heating cable that the positioning mould 122 of diameter location hole makes the inlet wire positioning module 12 be suitble to production different, the inlet wire mould
121 and the positioning mould 122 be respectively provided with recirculation hole, the recirculation hole mutually circulates, and the recirculation hole forms part described first
Feeding-passage 16.
Embodiment three
Embodiment three improves the inner conductor layer mould group, and specific place is that the inner conductor layer mould group 13 is wrapped
Include stent 131 and rotation mould 132.
As shown in figure 4, Fig. 4 is the topology view (vertical view) of the compound die group；The stent 131 passes through pin or spiral shell
Bolt etc., which is fixedly connected, to be fixed in the mold core support sleeve 11, several according to number of openings setting in the stent 131
First molding cavity, first molding cavity include rotation section 133 and forming part 134, and the rotation section 133 is set as boring
Shape, the rotation mould 132 are arranged in the rotation section 133, and the rotation mould 132 can be in the rotation section 133 freely
Rotation；The rotation mould 132 is conical hollow cast structure, 132 outer surface of rotation mould and 133 inner surface of the rotation section
Dimensional fits setting, realizes 132 outer surface of rotation mould and 133 inner surface sliding contact of the rotation section.The forming part
134 be cylinder straight hole, and circular diameter is equal to the interior circular diameter of rotation 132 discharge end of mould in the forming part 134, guarantees
When the inner conductor layer material passes through, stream resistance increase, keep the inner conductor layer material closely knit, the inner conductor layer material with
The metal inside is tightly combined.
The inlet wire positioning module 12 and the inner conductor layer mould group 13 form first melt space, the positioning mould
122 discharge end extends to form locating piece into first melt space, and the locating piece is caused to be in first melting
In space, the locating piece is set as spherical surface, and the basal diameter of the spherical surface and the inner circle of rotation 132 charging port of mould are straight
Diameter is identical, realizes the coaxial arrangement of the positioning mould 122 and the rotation mould 132, avoids the rotation mould 132 hair in rotation
Raw eccentric phenomena, while certain fixed function is played to the rotation mould 132, prevent the rotation mould 132 from axial alter occurs
It is dynamic.
As shown in Figure 5, Figure 6, Fig. 5 is the connection view of the inner conductor layer mould group, and Fig. 6 is the inner conductor layer mould group
Part connection view；Braking parts 135 are arranged in 132 outer surface of rotation mould, and the braking parts 135 are set as helical teeth, uniform ring
Shape is distributed on the rotation mould 132, and the inner conductor layer mould group 13 further includes the first brake assemblies, first brake assemblies
The output of the first motor is fixed on including first motor, the first helical gear and the second helical gear 136, first helical gear
On axis, first helical gear and second helical gear 136 are equipped with, and second helical gear 136 is arranged in adjacent
Between the rotation mould 132, the braking parts 135 of second helical gear 136 simultaneously with the adjacent rotation mould 132 cooperate
Setting causes first helical gear to rotate, drives second helical gear 136 by the rotation of the first motor output shaft
Rotation, to realize the rotation of the adjacent rotation mould 132.
Second helical gear is generally located on the rotation mould middle section, second helical gear and the braking parts be with
The helical teeth of conjunction need to be to second helical gear to guarantee that second helical gear and the braking parts are in meshing state always
Thickness set, avoid second helical gear is blocked up from causing the described second helical gear adjacent inclined teeth spacing variation excessive
Phenomena such as leading to biting teeth.
The calculation formula of the second helical gear thickness A is
Wherein, B is the rotation mould length；C is the distance between adjacent described metal inside；D is the metal inside
Diameter；n1For the number of teeth of the braking parts；n2For the described second helical gear number of teeth.
When the rotation mould length is longer, the bevel inclination angle of the rotation mould is bigger, and described second is helical gear
For adjacent inclined teeth spacing variable quantity with regard to smaller, the second helical gear thickness is thicker；The diameter of the metal inside is bigger,
In the case that the distance between the adjacent metal inside is constant, the bevel inclination angle of the rotation mould is bigger, and described the
For two helical gear adjacent inclined teeth spacing variable quantities with regard to smaller, the second helical gear thickness is thicker.
By the setting to the described second helical gear thickness, convenient for whole to the rotation mould and second helical gear
The design of fit dimension realizes that first brake assemblies drive the rotation mould, makes the melting in first melt space
Liquid shows a degree of rotation.
The structure setting of the inner conductor layer mould group 13 enables to the molten liquid in first melt space to show
A degree of rotation, this rotation enable to metal inside during wrapping up the inner conductor layer, make the interior of package
Also there is a degree of rotation in conductor layer, and this rotation bring is to will appear certain journey in the inner conductor layer outer surface of package
The twill and gauffer of degree, this gauffer can make the inner conductor layer with it is PTC layers described between be in contact during more
Closely, the fixing intensity that can be obviously improved between two layers, improves the safety of product.
Installation cavity is arranged in the stent 131 between the adjacent rotation mould 132, realizes second helical gear 136
Installation fix, the installation cavity includes mounting portion and a pair of of fixed part for being symmetrical set in the mounting portion, described solid
Determine portion and be connected to the mounting portion by axis hole, second helical gear 136 includes gear mass and shaft, and the shaft is from described
Gear mass center is run through and the gear mass can be freely rotated around the shaft, and the gear mass is arranged in the mounting portion, institute
Both ends of the shaft setting screw thread is stated, turns the nut that both ends are threadedly coupled with described and is arranged in the fixed part, described in tightening
Nut causes the nut and the fixed part inner surface to be adjacent to realization second helical gear 136 and the stent 131
Installation is fixed.The width dimensions of the mounting portion are greater than the width dimensions of the gear mass, realize that second helical gear 136 exists
Adjusting on axial direction.
It is worth noting that the stent 131 is split production, with excessively described 132 axis of rotation mould and the fixation
The plane of 131 axis of mould divides the stent 131 for two parts.The split settings of the stent 131 are convenient for described second
Helical gear 136 is equipped with the adjacent braking parts 135 simultaneously, is also convenient for second helical gear 136 and described
The replacement of braking parts 135.Since second helical gear 136 is that gear connects with the braking parts 135, in the mistake of long-time service
The abrasion of the gear teeth is easily caused in journey, reduces transmission efficiency；Second helical gear 136 and the setting of the helical teeth of the braking parts 135,
It can be adjusted between second helical gear 136 and the braking parts 135 by being adjusted axially to second helical gear 136
The tightness degree of mating connection improves the service life of the inner conductor layer mould group 13, reduces mismatch error to described in raising
The applicability of the inner conductor layer mould group 13.
Example IV
In the present embodiment four, the PTC layers of mould group 14 includes PCT package mould 141 and stock mould 142, the mold core branch
First annular boss 111 is arranged in 14 position of the PTC layers of mould group in support set 11, and the first linkage portion is arranged in the PCT package mould 141
144 cooperate with the first annular boss 111, and the PCT package mould 141 is connect with the stock mould 142.In the PCT packet
It wraps up at mould 141 and 142 link position of stock mould, first annular notch, the stock mould is arranged in the PCT package mould 141
142 are equipped with first annular portion 143, are equipped with reality by the first annular notch and the first annular portion 143
The coaxial arrangement of existing PCT the package mould 141 and the stock mould 142.The stock mould 142 and the insulating layer mould group 15 are logical
It crosses pin or bolt etc. to be fixedly connected, the PCT is wrapped up by the stock mould 142 and the first annular boss 111
The position of mould 141 limits, position of the fixed PCT package mould 141 in the mold core support sleeve 11.
The insulating layer mould group 15 includes insulation package mould 151 and wire finishing die 152, and the mold core support sleeve 11 is described exhausted
15 position of edge layer mould group is arranged the second annular convex platform 112, second linkage portion of the insulation package setting of mould 151 154 and described the
Second ring boss 112 cooperates, and the insulation package mould 151 is connect with the wire finishing die 152.The insulation package mould 151 with
At 152 link position of wire finishing die, the second annular notches are arranged in the insulation package mould 151, and the cooperation of wire finishing die 152 is set
The second ring part 153 is set, realizes the insulation by second annular notches and being equipped with for second ring part 153
Wrap up the coaxial arrangement of mould 151 and the wire finishing die 152.The wire finishing die 152 and the insulating layer mould group 15 by pin or
Bolt etc. is fixedly connected, by the wire finishing die 152 and second annular convex platform 112 to the insulation package mould 151
Position limitation, position of the fixed insulation package mould 151 in the mold core support sleeve 11.
As shown in Figure 7, Figure 8, Fig. 7 is the part connection view of the PTC layers of mould group, and Fig. 8 is the insulating layer mould group
Part connection view.First linkage portion 144 and second linkage portion 154 are the gear teeth that annular is evenly arranged, described
Compound die group 1 further includes the second brake assemblies 19, and second brake assemblies 19 include first gear group 191, second gear group
192, the second motor and brake axle, the brake axle are fixed on the output shaft of second motor, the first gear group 191
It is fixed on the brake axle with the second gear group 192, the first gear group 191 and first linkage portion 144 are matched
Setting is closed, the second gear group 192 and second linkage portion 154 are equipped with.
The first gear group 191 and the second gear group 192 are driven by the rotation of second motor output shaft
Rotation, realize the rotation of PCT package mould 141 and the insulation package mould 151, enable to second melt space
A degree of rotation is showed with the molten liquid in the third melt space, this rotation enables to metal inside wrapping
During wrapping up in, wrapping layer is set a degree of rotation also occur, this rotation bring is will appear in wrapping layer outer surface
A degree of twill and gauffer, this gauffer can make more close during being in contact between adjacent wrapping layer, energy
The fixing intensity being enough obviously improved between two layers improves the safety of product.
Preferably, the rotation direction of the PCT package mould 141 and the insulation package mould 151 is on the contrary, in this way, described
When the metal inside that second melt space has wrapped up PTC layers is entered in the third melt space, in the third melt space
The molten insulation material in portion can generate the rotation opposite with PTC layers, keep fixation between the two even closer, promote cable
Stability and safety.
The first gear group 191 includes a first gear being fixed on the brake axle, the second gear group
192 include a second gear being fixed on the brake axle and one simultaneously with the second gear, described second
The third gear of dynamic 154 gear of portion connection, the third gear are arranged on the mold core support sleeve 11, realize the PCT packet
It is opposite with the insulation package rotation direction of mould 151 to wrap up in mould 141.
The PCT package mould 141 includes the second molding cavity, and the insulation package mould 151 includes third molding cavity, institute
It states the second molding cavity and the third molding cavity is respectively provided with deflector, the deflector is preferably arranged to spiral sheet, just
In PTC and the preferable rotary power of insulating materials offer to molten condition.Increase molten by the setting of the deflector
The PTC of state and the rotary power of insulating materials, keep the rotational agitation of molten liquid more violent, while reducing molten liquid and passing through charging
Channel enters the confusion that melt space generates flow direction.
Gap is arranged in the marginal portion of the discharging of stent 131 end face and the first annular boss 111, is first-class
The PCT material of cavity, the molten condition enters described second through first flowing lumen by second feeding-passage 17
Melt space.The discharge end center of the stent 131 extends to form raised land into second melt space, is the
The distance of one distributary division, first distributary division inclined-plane to the second molding cavity inner surface is less than first flowing lumen
Gap size keeps the PCT material of the molten condition thinning, convenient for being evenly heated, in favor of the melting by this set
The further plasticizing of the PCT material of state.
To realize that said effect, the distance on first distributary division inclined-plane to the second molding cavity inner surface need gradually
Become smaller, therefore the first distributary division thickness h is set, first distributary division is traditionally arranged to be cone type.Described
The calculation formula of one distributary division thickness h is,
Wherein, D1For basal diameter of first distributary division in the stent, D2It is protruded into for first distributary division
The end face diameter of the PCT package mould, D3The interior circular diameter of mould feed end is wrapped up for the PCT；D4Mould is wrapped up for the PCT to go out
Expect the interior circular diameter at end；L is the distance of first flowing lumen；L is the length that the PCT wraps up mould.
The PCT package mould feed end and discharge end inner circle difference in diameter are bigger, constant in the length of PCT package mould
In the case where, illustrate that the PCT package mold cavity tilt angle is bigger, the first distributary division both ends of the surface diameter is constant, described
The bevel inclination angle of first distributary division can be bigger, and the first distributary division thickness is bigger；First flowing lumen
The distance of distance is bigger, illustrates that the circulation area of first flowing lumen is bigger, the first distributary division thickness is bigger.
By the setting to the first distributary division thickness h, the setting to the first distributary division shape is realized, make described
The PCT material of molten condition is thinning, convenient for being evenly heated, in favor of the further plasticizing of the PCT material of the molten condition.
Gap is arranged in the marginal portion of the discharging of stock mould 142 end face and second annular convex platform, for the second circulation
The insulating materials of chamber, the molten condition is molten into the third through second flowing lumen by the third feeding-passage 18
Melt space.The discharge end center of the stock mould 142 extends to form raised land into the third melt space, is second
The distance of distributary division, second distributary division inclined-plane to the third molding cavity inner surface is less than between second flowing lumen
Gap size keeps the PCT material of the molten condition thinning, convenient for being evenly heated, in favor of the molten by this set
The further plasticizing of the PCT material of state.Similarly, second distributary division is similar to the first distributary division setting means.
Embodiment five
It is a kind of using application method of the invention comprising steps of
S1 is debugged and is installed the co-extruding machine head；
S2 actively releases two metal insides from the active paying out machine and the draw drum, is tensioned through the dancing wheel
After heater heating, into the co-extruding machine head；
S3, the metal inside carry out package operation in the co-extruding machine head；
S4, the metal inside are completed after package operation again after the thermostatic water bath is cooling, by the traction device and
The take-up reel is kept well.
Wherein step S1 specifically, the analysis heating cable to be made specification, select to meet manufacturing conditions and mating
The mold core support sleeve 11, the inlet wire positioning module 12, the inner conductor layer mould group 13, the PTC layers of mould group 14 and institute
State insulating layer mould group 15.
Being connected to for the inlet wire mould 121 and the recirculation hole of the positioning mould 122 is adjusted, second helical gear is debugged
136, simultaneously with the mated condition of the adjacent braking parts 135, second helical gear 136 are adjusted to and the adjacent braking
The transmission better position in portion 135, and position adjusting is carried out to the first motor, guarantee first helical gear and described second
Mating connection between helical gear 136 guarantees the normal work of the inner conductor layer mould group 13.
First the inner conductor layer mould group 13 is installed from 11 charging port of mold core support sleeve to the mold core support sleeve
In 11, and by the fixed position such as pin or bolt, guarantee the space of first flowing lumen；It is fixed to complete the inner conductor layer
The inlet wire positioning module 12 is fixed in the mold core support sleeve 11 after mould group 13, guarantees first feeding-passage
16 with the circulation of the recirculation hole, while guaranteeing being correspondingly arranged for the positioning mould 122 and the rotation mould 132.
PCT package mould 141 is installed from 11 discharge end of mold core support sleeve to the mold core support sleeve 11,
And realize the position that mould 141 is wrapped up the PCT in the mold core support sleeve 11 by the way that the stock mould 142 to be fixedly mounted on
Limit, power applied to first linkage portion 144 in outside, detect PCT package mould 141 whether can with normal rotation,
The damage of second motor and the first gear group 191 described in when avoiding PCT package mould 141 is stuck from causing normal use.
It similarly installs and tests the insulation package mould 151 and the wire finishing die 152.
The position for adjusting the first gear group 191 and the second gear group 192 guarantees the first gear group 191
With the normal transmission connection of first linkage portion 144, the second gear group 192 and second linkage portion 154.
The compound die group that installation has detected is mounted in the shell 2, guarantees first feeding-passage 16, institute
State the connection of the second feeding-passage 17, the third feeding-passage 18, and by the feeding assembly, the preceding gland, it is described after
Gland and the shell 2 installation are fixed, and guarantee that the plastic extruder is connected to the feeding assembly respectively.
Step S3 specifically, the metal inside by the effect of the positioning mould 122 guarantee the metal inside it
Between distance, enter first melt space in, by the rotation of the first motor output shaft cause described first tiltedly
Gear rotation, drives second helical gear 136 to rotate, to realize the rotation of the adjacent rotation mould 132, makes molten condition
The conductor material generate certain rotation, also there is a degree of rotation in the conductor material being wrapped on the metal inside
Turn, further the shaping plasticized formation in the forming part 134 is fine and close and tight in conjunction with the metal inside for the conductor material
Close inner conductor layer.
The metal inside with the inner conductor layer successively second melt space wrap up PTC heater layer,
Composite insulation layer is wrapped up in the third melt space, finally completes all package operations in the wire finishing die 152.
Since PCT package mould 141 and insulation package mould 151 all generate rotation, and in the work of the deflector
Under, the PCT material and the insulating materials under molten condition generate more violent rotation, make to be wrapped in the metal
Also there is a degree of rotation in melted material on inner core, the melted material further the stock mould 142, it is described go out
In line mould 152 shaping plasticized formation it is fine and close and with the compact PTC heater layer of a upper wrapping layer, composite insulation layer.
The rotation direction of the PCT package mould 141 and the insulation package mould 151 is on the contrary, in second melt space
When having wrapped up PTC layers of metal inside and having entered in the third melt space, the melting insulation inside the third melt space
Material can generate the rotation opposite with PTC layers, keep fixation between the two even closer, promote the stability and safety of cable
Property
The foregoing is merely presently preferred embodiments of the present invention, is merely illustrative for the purpose of the present invention, and not restrictive
's.Those skilled in the art understand that in the spirit and scope defined by the claims in the present invention many changes can be carried out to it,
It modifies or even equivalent, but falls in protection scope of the present invention.
Claims (8)
1. a kind of multi-layer co-extruded device, including head, active paying out machine, conductor draw drum, dancing wheel, heater, co-extruding machine head,
Thermostatic water bath, traction device and take-up reel, which is characterized in that the co-extruding machine head include compound die group, shell, preceding gland and after
Gland, the compound die group include mold core support sleeve, inlet wire positioning module, inner conductor layer mould group, PTC layers of mould group and insulating layer mould
Group is equipped with the mold core support sleeve in the shell, is provided with the duct with annular convex platform in the mold core support sleeve, it is described into
Line positioning module, the inner conductor layer mould group, the PTC layers of mould group and the insulating layer mould group are successively mounted in the duct,
Mold core support sleeve both ends are fixed with the preceding gland and rear pressing cover positioning respectively；The PTC layers of mould group includes PCT packet
Mould and stock mould are wrapped up in, first annular boss is arranged in the mould group position PTC layers of in the mold core support sleeve, and the PCT wraps up mould
First linkage portion is set and the first annular boss cooperates, the PCT package mould is slidably connected with the stock mould；It is described exhausted
Edge layer mould group includes insulation package mould and wire finishing die, and the mold core support sleeve is in the second annular of insulating layer mould group position setting
Boss, the second linkage portion is arranged for insulation package mould and second annular convex platform cooperates, the insulation wrap up mould with it is described
Wire finishing die is slidably connected；First linkage portion and second linkage portion are the gear teeth that annular is evenly arranged, described compound
Mould group further includes the second brake assemblies, and second brake assemblies include first gear group, second gear group, the second motor and system
Moving axis, the brake axle are fixed on the output shaft of second motor, and the first gear group and the second gear group are solid
It is scheduled on the brake axle, the first gear group and first linkage portion are equipped with, the second gear group and described
Second linkage portion is equipped with.
2. multi-layer co-extruded device as described in claim 1, which is characterized in that the PCT package mould PCT package mould with
First annular notch is set at the stock mould link position, and the stock mould is equipped with first annular portion, passes through described the
The coaxial arrangement for being equipped with realization PCT the package mould and the stock mould of one annular notches and the first annular portion.
3. multi-layer co-extruded device as described in claim 1, which is characterized in that the first gear group includes one and is fixed on institute
The first gear on brake axle is stated, the second gear group includes the second gear being fixed on the brake axle, and
One third gear connecting simultaneously with the second gear, the second linkage portion gear, the third gear are arranged in institute
It states on mold core support sleeve.
4. multi-layer co-extruded device as claimed in claim 2, which is characterized in that the edge of inlet wire positioning module discharging end face
Gap is arranged with the first annular boss in part, is the first flowing lumen, the PCT material of molten condition is through first flowing lumen
Into in PCT package mould；The discharge end center of the inlet wire positioning module extends to form protrusion into PCT package mould
Table top is the first distributary division.
5. multi-layer co-extruded device as claimed in claim 4, which is characterized in that the calculation formula of the first distributary division thickness h
For,
Wherein, D1For basal diameter of first distributary division on the inlet wire positioning module, D2It is stretched for first distributary division
Enter the end face diameter of the PCT package mould；D3The interior circular diameter of mould feed end is wrapped up for the PCT；D4Mould is wrapped up for the PCT
The interior circular diameter of discharge end；L is the gap thickness of first flowing lumen；L is the length that the PCT wraps up mould.
6. a kind of application method using the described in any item multi-layer co-extruded devices of claim 1-5, which is characterized in that including step
Suddenly,
S1 is debugged and is installed the co-extruding machine head；
S2 actively releases two metal insides from the active paying out machine and the draw drum, through dancing wheel tensioning and institute
After stating heater heating, into the co-extruding machine head；
S3, the metal inside carry out package operation in the co-extruding machine head；
S4, the metal inside are completed after package operation again after the thermostatic water bath is cooling, by the traction device and described
Take-up reel is kept well.
7. application method as claimed in claim 6, which is characterized in that the specific steps are analyze the heating electric to be made to S1
The specification of cable, selection meet manufacturing conditions and the matched mold core support sleeve, the inlet wire positioning module, the inner conductor layer
Mould group, the PTC layers of mould group and the insulating layer mould group；PCT package mould is pacified from the mold core support sleeve discharge end
It is filled in the mold core support sleeve, and is realized by the way that the stock mould to be fixedly mounted in the mold core support sleeve to described
PCT wraps up the position restriction of mould, applies power to first linkage portion in outside, and whether detect PCT package mould can be with
Normal rotation, when avoiding PCT package mould is stuck from causing normal use described in the second motor and the first gear group damage
It is bad；It similarly installs and tests the insulation package mould and the wire finishing die.
8. application method as claimed in claim 6, which is characterized in that S3 the specific steps are, PCT package mould and it is described absolutely
Edge package mould generates rotation under the action of second brake assemblies, and is being arranged in the PTC layers of mould group and the insulation
Under deflector effect in layer mould group, the PCT material and insulating materials under molten condition generate more violent rotation, make
The melted material being wrapped on the metal inside also rotates, and the melted material is further in the stock mould, described
In wire finishing die shaping plasticized formation it is fine and close and with the compact PTC heater layer of a upper wrapping layer, composite insulation layer.
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| CN109068421A (en) * | 2018-08-06 | 2018-12-21 | 芜湖市旭辉电工新材料有限责任公司 | A kind of asynchronous piddler equipment of heating tape multistation |
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| CN108971253B (en) * | 2018-08-10 | 2020-06-12 | 佛山市顺德区金粤顺模具有限公司 | Multi-station aluminum alloy heat conducting wire extrusion die |
| CN108839323A (en) * | 2018-09-21 | 2018-11-20 | 杨明昆 | A kind of new type plastic pipeline extrusion forming device |
| CN113635532B (en) * | 2021-08-09 | 2023-07-28 | 界首市天鸿新材料股份有限公司 | PP/PE/PP three-layer co-extrusion lithium battery power diaphragm casting device |
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