CN108000835A - 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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- CN108000835A CN108000835A CN201711215018.3A CN201711215018A CN108000835A CN 108000835 A CN108000835 A CN 108000835A CN 201711215018 A CN201711215018 A CN 201711215018A CN 108000835 A CN108000835 A CN 108000835A
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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
-
- 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
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, Water Tank with Temp.-controlled, draw-gear and take-up reel, the co-extruding machine head includes compound module, housing, preceding gland and rear pressing cover, the compound module includes core rod supporting sleeve, inlet wire positioning module, inner conductor layer module, PTC layers of module and insulating layer module, the PTC layers of module includes PCT parcel moulds and stock mould, the core rod supporting sleeve sets first annular boss in the PTC layers of module position, the PCT parcels mould sets the first linkage portion to coordinate with the first annular boss, the PCT parcels mould is slidably connected with the stock mould；The present invention realizes the reverse rotation of the PTC layers of module and the insulating layer module, makes the fixation between PTC heaters 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 electric wire manufacturing equipment field, and in particular to a kind of multi-layer co-extruded device and its application method.
Background technology
For heating cable, cable industry generally uses three layer coextruding device at home, some domestic 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, some import and domestic producers are more using the head of annular feeding-passage three layer coextruding device
Manufactured, it is compound that two-chip structure first is respectively coated by last layer generally by the production technology of layering repeated processing coating
Thing coats more than two layers compounds again；As elder generation coats out one layer of coating on conductor, first layer bag then will have been coated again
The both threads core releasing for covering thing coats second layer coating again, then successively coats again.The shortcomings that this technique is repeatedly to wrap
As used compressing mold 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 using pipe die is squeezed, it relies primarily on the characteristic of wrappage material itself to realize
Wrappage produces good fixation with metal inside, PTC inner cores, but this fixation at present is not very firm, still can
Long rear appearance short circuit, the situation of mismatch between when in use.
In view of drawbacks described above, creator of the present invention obtains the present invention finally by prolonged research and practice.
The content of the invention
To solve above-mentioned technological deficiency, the technical solution adopted by the present invention is, there is provided a kind of multi-layer co-extruded device, it is described
Multi-layer co-extruded device includes head, active paying out machine, conductor draw drum, dancing wheel, and heater, co-extruding machine head, Water Tank with Temp.-controlled, lead
Leading-in device and take-up reel, the co-extruding machine head include compound module, housing, preceding gland and rear pressing cover, and the compound module includes
Core rod supporting sleeve, inlet wire positioning module, inner conductor layer module, PTC layers of module and insulating layer module, equipped with described in the housing
Core rod supporting sleeve, is provided with the duct with annular convex platform, the inlet wire positioning module, the inner wire in the core rod supporting sleeve
Successively in the duct, the core rod supporting sleeve both ends are distinguished for layer module, the PTC layers of module and the insulating layer module
Fixed with the preceding gland and rear pressing cover positioning；The PTC layers of module includes PCT parcel moulds and stock mould, the core rod
Supporting sleeve sets first annular boss in the PTC layers of module position, and the PCT parcels mould sets the first linkage portion and described the
One annular convex platform coordinates, and the PCT parcels mould is slidably connected with the stock mould.
Preferably, PCT parcel moulds setting at PCT parcel moulds with the stock mould link position is first annular
Notch, the stock mould are equipped with first annular portion, pass through the cooperation in the first annular notch and the first annular portion
Set and realize being coaxially disposed for PCT parcel mould and the stock mould.
Preferably, the insulating layer module includes insulation parcel mould and wire finishing die, the core rod supporting sleeve is in the insulation
Layer module position sets the second annular convex platform, and the insulation parcel mould sets the second linkage portion to match somebody with somebody with second annular convex platform
Close, the insulation parcel mould is connected 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
Module 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 consolidated
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 a first gear being fixed on the brake axle, second tooth
Wheel group includes a second gear being fixed on the brake axle, and one at the same time with the second gear, described second
3rd gear of linkage portion gear connection, the 3rd gear are arranged on the core rod supporting sleeve.
Preferably, the marginal portion of the inlet wire positioning module discharging end face sets gap with the first annular boss,
For the first flowing lumen, the PCT materials of the molten condition enter in PCT parcel moulds through first flowing lumen；It is described into
The discharge end center of line positioning module extends to form raised land into PCT parcel moulds, 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, D2For the described first shunting
Portion stretches into the end face diameter of the PCT parcels mould；D3The interior circular diameter of mould feed end is wrapped up for the PCT；D4For the PCT bags
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, debugs and installs the co-extruding machine head；
S2, two metal insides are actively released from the active paying out machine and the draw drum, are tensioned through the dancing wheel
After being heated with the heater, into the co-extruding machine head；
S3, the metal inside carry out parcel operation in the co-extruding machine head；
S4, the metal inside are completed after parcel operation again after Water Tank with Temp.-controlled cooling, by the draw-gear and
The take-up reel is kept well.
Preferably, S1 is concretely comprised the following steps, the specification for the heating cable to be made is analyzed, selection meets manufacturing conditions and matches somebody with somebody
The core rod supporting sleeve, the inlet wire positioning module, the inner conductor layer module, the PTC layers of module and the insulation of set
Layer module；By the PCT wrap up mould from the core rod supporting sleeve discharging port install to the core rod supporting sleeve, and pass through by
The stock mould is fixedly mounted on the position restriction realized in the core rod supporting sleeve to PCT parcel moulds, in outside to institute
State the first linkage portion and apply power, detect whether the PCT parcels mould can avoid the PCT parcels mould stuck with normal rotation
The damage of second motor and the first gear group described in when causing normal use；Similarly install and test the insulation parcel mould
With the wire finishing die.
Preferably, S3 is concretely comprised the following steps, the PCT parcel moulds and the insulation parcel mould are in second brake assemblies
Effect is lower to produce rotation, and under the deflector effect being arranged in the PTC layers of module and the insulating layer module, molten
The PCT materials and the insulating materials under state produce more violent rotation, make to be wrapped in molten on the metal inside
Melt material also to rotate, the melted material is further shaping plasticized in the stock mould, the wire finishing die to form densification
And PTC heaters layer compact with a upper wrapping layer, composite insulation layer.
Compared with the prior art the beneficial effects of the present invention are：1, by the compound module realize to metal inside into
Row inner conductor layer, PTC heaters layer, the disposable parcel of composite insulation layer, and pass through first linkage portion and described second
The rotation that the braking effect of linkage portion causes to melt lapping is so that the lapping fits closely；2, pass through described
One helical gear realizes the adjacent rotation for rotating mould, so that metal inside is during the inner conductor layer is wrapped up,
The inner conductor layer of parcel is set a degree of rotation also occur；3, pass through setting for the first gear group and the second gear group
Put, realize the reverse rotation of the PTC layers of module and the insulating layer module, make between PTC heaters layer, composite insulation layer
Fixation is even closer.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the topology view of the co-extruding machine head；
Fig. 3 is the topology view (facing) of the compound module；
Fig. 4 is the topology view (vertical view) of the compound module；
Fig. 5 is the connection view of the inner conductor layer module；
Fig. 6 is the local connection view of the inner conductor layer module；
Fig. 7 is the local connection view of the PTC layers of module；
Fig. 8 is the local connection view of the insulating layer module.
Digital representation in figure：
The compound modules of 1-；2- housings；Gland before 3-；4- rear pressing covers；11- core rod supporting sleeves；12- inlet wire positioning modules；13-
Inner conductor layer module；14-PTC layers of module；15- insulating layer modules；The first feeding-passages of 16-；The second feeding-passages 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 moulds；122-
Positioning mould；131- stents；132- rotates mould；133- rotation sections；134- forming parts；135- braking parts；The second helical gears of 136-；
141-PCT wraps up mould；142- stock moulds；The first annular portions of 143-；The first linkage portions of 144-；151- insulation parcel moulds；152- goes out
Line mould；The second ring parts of 153-；The second linkage portions of 154-；100- active paying out machines；200- draw drums；300- dancing wheels；400-
Heater；500- co-extruding machine heads；600- inner wire extruders；700-PTC extruders；800- insulation extrusion machines；900- constant temperature
Water tank；1000- draw-gears；1100- take-up reels；1200- metal insides.
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 Figure 1, Fig. 1 be the present invention overall structure diagram, 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, draw-gear, take-up reel.From 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
After being heated with the heater 400, disposably wrapped into the co-extruding machine head 500 between three plastic extruders is interior
After being covered with inner conductor layer, PTC heaters layer, composite insulation layer, then after the Water Tank with Temp.-controlled 900 cooling, filled by the traction
Put 1000 and the take-up reel 1100 keep well.The tensile force of two metal insides 1200 should keep one in the production process
Cause；The plastic extruder is respectively inner wire extruder 600, PTC extruders 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 of the prior art
The co-extruding machine head, mainly includes core rod branch including compound module 1, housing 2, preceding gland 3 and rear pressing cover 4, the compound module 1
Support set 11, inlet wire positioning module 12, inner conductor layer module 13, PTC layers of module 14 and insulating layer module 15, fill in the housing 2
There is the core rod supporting sleeve 1, the duct with annular convex platform, the inlet wire positioning module are provided with the core rod supporting sleeve 11
12nd, 15 4 pieces of the inner conductor layer module 13, the PTC layers of module 14 and the insulating layer module moulds are mounted in the hole successively
In road, 11 both ends of core rod supporting sleeve are fixed with the preceding gland 3 and the positioning of the rear pressing cover 4 respectively, are set on the housing 2
Three feeding assemblies are put, the co-extruding machine head sets three feeding-passages, and the feeding assembly passes through the feeding-passage respectively
Through the housing 2, the core rod supporting sleeve 11, with the inner conductor layer module 13, the PTC layers of module 14 and the insulation
Layer module 15 communicates, and the feeding assembly is connected with the plastic extruder respectively.
Fixed between the housing 2 and the core rod supporting sleeve 11 with pin.
First feeding-passage 16 is arranged on the inlet wire positioning module 12, and the second feeding-passage 17 is arranged in described and leads
Between body layer module 13 and the PTC layers of module 14, the 3rd feeding-passage 18 is arranged on the PTC layers of module 14 and the insulation
Between layer module 15.
Part of first feeding-passage 16 on the housing 2 is communicated with first feeding assembly, and described second
Part of the feeding-passage 17 on the housing 2 is communicated with second feeding assembly, and the 3rd feeding-passage 18 is described
Part on housing 2 is communicated with the 3rd 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 module 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 module 13
Into the second melt space formed between the inner conductor layer module 13 and the PTC layers of module 14, second melting is empty
Between in have the PTC of molten condition, similarly, last insulating layer using similar method be wrapped in inner conductor layer wrapped with
On PTC layers of cable.And first feeding-passage 16 for the inner conductor layer melted material by the way that and it is molten to inject described first
Melt space, the ptc material for melting and insulating materials enter respectively for second feeding-passage 17, the 3rd feeding-passage 18
Second melt space and the 3rd melt space.
Embodiment two
As shown in figure 3, Fig. 3 is the topology view (facing) of compound module of the present invention, the inlet wire positioning module 12
Including inlet wire mould 121 and positioning mould 122.
The inlet wire mould 121 is arranged on the feed end of the core rod supporting sleeve 11, and the inlet wire mould 121 is according to heating cable
Inner core quantity sets some through holes, and the present embodiment sets two, and the positioning mould 122 is arranged in the through hole, the positioning
Mould 122 is preferably arranged to cylinder, sets location hole in the positioning mould 122, the metal inside is arranged on the location hole
Interior, the positioning mould 122 is fixedly connected with the inlet wire mould 121 by pin or bolt etc., can have difference directly by replacing
The positioning mould 122 of footpath location hole makes the inlet wire positioning module 12 be adapted to make different heating cables, 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 is improved the inner conductor layer module, and specific part is that the inner conductor layer module 13 wraps
Include stent 131 and rotate mould 132.
As shown in figure 4, Fig. 4 is the topology view (vertical view) of the compound module；The stent 131 passes through pin or spiral shell
Bolt etc., which is fixedly connected, to be fixed in the core rod supporting sleeve 11, some 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 arranged to bore
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
Rotate；The rotation mould 132 is conical hollow cast structure, rotation 133 inner surface of 132 outer surface of mould and the rotation section
Dimensional fits are set, and realize the rotation 133 inner surface sliding contact of 132 outer surface of mould and the rotation section.The forming part
134 be cylinder straight hole, and circular diameter is equal to the interior circular diameter of the rotation mould 132 discharging port in the forming part 134, ensures
The inner conductor layer material by when, stream resistance increase, make 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 module 13 form first melt space, the positioning mould
122 discharge end extends to form locating piece into first melt space, causes the locating piece to be in the described first melting
In space, the locating piece is arranged to sphere, and the basal diameter of the sphere and the inner circle of rotation 132 charging port of mould are straight
Footpath is identical, realizes that the positioning mould 122 and the mould 132 that rotates are coaxially disposed, avoids the rotation mould 132 from being sent out when rotating
Raw eccentric phenomena, while certain fixation 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 module, and Fig. 6 is the inner conductor layer module
Local connection view；132 outer surface of the rotation mould sets braking parts 135, and the braking parts 135 are arranged to helical teeth, uniform ring
Shape is distributed on the rotation mould 132, and the inner conductor layer module 13 further includes the first brake assemblies, first brake assemblies
Including the first motor, the first helical gear and the second helical gear 136, first helical gear is fixed on the output of first motor
On axis, first helical gear and second helical gear 136 are equipped with, and second helical gear 136 is arranged on adjacent
Between the rotation mould 132, second helical gear 136 coordinates with the adjacent braking parts 135 for rotating mould 132 at the same time
Set, cause first helical gear to rotate by the rotation of first motor output shaft, drive second helical gear 136
Rotate, so as to fulfill the adjacent rotation for rotating mould 132.
Second helical gear is generally located on the rotation mould stage casing, second helical gear and the braking parts be with
The helical teeth of conjunction, need to be to second helical gear to ensure that second helical gear and the braking parts are in engagement all the time
Thickness set, avoid second helical gear is blocked up from causing the described second helical gear adjacent inclined teeth spacing change excessive
Phenomena such as causing 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, it is described rotate mould bevel inclination angle it is bigger, 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, easy to overall 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 module 13 enables to the molten liquid in first melt space to show
A degree of rotation, this rotation enable to metal inside to make the interior of parcel during the inner conductor layer is wrapped up
Also there is a degree of rotation in conductor layer, and what this rotation was brought is that certain journey occurs in the inner conductor layer outer surface of parcel
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 security of product.
The stent 131 sets installation cavity 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 to connect with 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 on the mounting portion, institute
State shaft both ends to be threaded, turn the nut that both ends are threadedly coupled with described and be arranged in the fixed part, it is described by tightening
Nut causes the nut and the fixed part inner surface to be adjacent to and realize second helical gear 136 and the stent 131
Installation is fixed.The width dimensions of the mounting portion are more 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 rotation 132 axis of mould and the fixation
The plane of 131 axis of mould divides the stent 131 for two parts.The stent 131 is separately set, easy to described second
Helical gear 136 is equipped with the adjacent braking parts 135 at the same time, also allows for second helical gear 136 and described
The replacement of braking parts 135.Since second helical gear 136 and the braking parts 135 connect for gear, 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 helical teeth of the braking parts 135 are set,
It can be adjusted by being adjusted axially to second helical gear 136 between second helical gear 136 and the braking parts 135
The tightness degree of mating connection, improves the service life of the inner conductor layer module 13, and it is described so as to improve to reduce mismatch error
The applicability of the inner conductor layer module 13.
Example IV
In the present embodiment four, the PTC layers of module 14 includes PCT parcel moulds 141 and stock mould 142, the core rod branch
Support set 11 sets first annular boss 111 in 14 position of PTC layers of module, and the PCT parcels mould 141 sets the first linkage portion
144 coordinate with the first annular boss 111, and the PCT parcels mould 141 is connected with the stock mould 142.In the PCT bags
Wrap up in mould 141 and at 142 link position of stock mould, the PCT parcels mould 141 sets first annular notch, the stock mould
142 are equipped with first annular portion 143, and reality is equipped with by the first annular notch and the first annular portion 143
Existing the PCT parcel moulds 141 and the stock mould 142 are coaxially disposed.The stock mould 142 is logical with the insulating layer module 15
Cross 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 limitation of mould 141, position of the fixed PCT parcels mould 141 in the core rod supporting sleeve 11.
The insulating layer module 15 includes insulation parcel mould 151 and wire finishing die 152, and the core rod supporting sleeve 11 is described exhausted
15 position of edge layer module sets the second annular convex platform 112, and the insulation parcel mould 151 sets the second linkage portion 154 and described the
Second ring boss 112 coordinates, and the insulation parcel mould 151 is connected with the wire finishing die 152.It is described insulation parcel mould 151 with
At 152 link position of wire finishing die, the insulation parcel mould 151 sets the second annular notches, and the wire finishing die 152, which coordinates, to be set
The second ring part 153 is put, the insulation is realized by second annular notches and being equipped with for second ring part 153
Parcel mould 151 and the wire finishing die 152 are coaxially disposed.The wire finishing die 152 and the insulating layer module 15 by pin or
Bolt etc. is fixedly connected, by the wire finishing die 152 and second annular convex platform 112 to the insulation parcel mould 151
Position limits, position of the fixed insulation parcel mould 151 in the core rod supporting sleeve 11.
As shown in Figure 7, Figure 8, Fig. 7 is the local connection view of the PTC layers of module, and Fig. 8 is the insulating layer module
Local connection view.First linkage portion 144 and second linkage portion 154 are the gear teeth that annular is evenly arranged, described
Compound module 1 further includes the second brake assemblies 19, and second brake assemblies 19 include first gear group 191, second gear group
192nd, 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 second gear group 192 on the brake axle, the first gear group 191 and first linkage portion 144 are matched somebody with somebody
Close and set, 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 parcel mould 141 and the insulation parcel mould 151, enable to second melt space
A degree of rotation is showed with the molten liquid in the 3rd melt space, this rotation enables to metal inside wrapping
During wrapping up in, wrapping layer is set a degree of rotation also occur, what this rotation was brought is occurred 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 security of product.
Preferably, the rotation direction of the PCT parcel moulds 141 and the insulation parcel 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 3rd melt space, in the 3rd melt space
The molten insulation material in portion can produce the rotation opposite with PTC layers, make fixation therebetween even closer, lift cable
Stability and security.
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 at the same time with the second gear, described second
3rd gear of dynamic 154 gear of portion connection, the 3rd gear are arranged on the core rod supporting sleeve 11, realize the PCT bags
It is opposite with the rotation direction of the insulation parcel mould 151 to wrap up in mould 141.
The PCT parcels mould 141 includes the second molding cavity, and the insulation parcel mould 151 includes the 3rd molding cavity, institute
State the second molding cavity and the 3rd molding cavity is respectively provided with deflector, the deflector is preferably arranged to spiral sheet, just
Preferable rotary power is provided in PTC and insulating materials to molten condition.Molten is increased by the setting of the deflector
The PTC of state and the rotary power of insulating materials, make the rotational agitation of molten liquid more violent, while reduce molten liquid and pass through charging
Passage enters the confusion that melt space produces flow direction.
The marginal portion of the discharging of stent 131 end face sets gap with the first annular boss 111, is first-class
Cavity, the PCT materials of the molten condition enter described second by second feeding-passage 17 through first flowing lumen
Melt space.The discharge end center of the stent 131 extends to form raised land into second melt space, for the
One distributary division, the distance on the first distributary division inclined-plane to the second molding cavity inner surface are less than first flowing lumen
Gap size, makes the PCT materials of the molten condition thinning, easy to be evenly heated, in favor of the melting by this set
The further plasticizing of the PCT materials of state.
To realize the effect above, the distance on the first distributary division inclined-plane to the second molding cavity inner surface needs gradually
Diminish, 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, D2Stretched into for first distributary division
The end face diameter of the PCT parcels 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 parcel mould feed ends and discharge end inner circle difference in diameter are bigger, constant in the length of PCT parcel moulds
In the case of, illustrate that the PCT parcel mold cavities angle of inclination 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 materials of molten condition are thinning, easy to be evenly heated, in favor of the further plasticizing of the PCT materials of the molten condition.
The marginal portion of the discharging of stock mould 142 end face sets gap with second annular convex platform, for the second circulation
Chamber, the insulating materials of the molten condition enter the described 3rd through second flowing lumen by the 3rd feeding-passage 18 and melt
Melt space.The discharge end center of the stock mould 142 extends to form raised land into the 3rd melt space, is second
Distributary division, the distance on the second distributary division inclined-plane to the 3rd molding cavity inner surface are less than between second flowing lumen
Gap size, makes the PCT materials of the molten condition thinning, easy to be evenly heated, in favor of the molten by this set
The further plasticizing of the PCT materials of state.Similarly, second distributary division is similar to the first distributary division setting means.
Embodiment five
A kind of application method using the present invention includes step：
S1, debugs and installs the co-extruding machine head；
S2, two metal insides are actively released from the active paying out machine and the draw drum, are tensioned through the dancing wheel
After being heated with the heater, into the co-extruding machine head；
S3, the metal inside carry out parcel operation in the co-extruding machine head；
S4, the metal inside are completed after parcel operation again after Water Tank with Temp.-controlled cooling, by the draw-gear and
The take-up reel is kept well.
Wherein step S1 selects to meet manufacturing conditions and supporting specifically, the specification of the analysis heating cable to be made
The core rod supporting sleeve 11, the inlet wire positioning module 12, the inner conductor layer module 13, the PTC layers of module 14 and institute
State insulating layer module 15.
Connecting for the inlet wire mould 121 and the recirculation hole of the positioning mould 122 is adjusted, debugs second helical gear
136 at the same time and the adjacent braking parts 135 mated condition, by second helical gear 136 adjust to the adjacent braking
The transmission better position in portion 135, and first motor is adjusted into row position, ensure first helical gear and described second
Mating connection between helical gear 136, ensures the normal work of the inner conductor layer module 13.
First the inner conductor layer module 13 is installed to the core rod supporting sleeve from 11 charging port of core rod supporting sleeve
In 11, and pass through the fixed positions such as pin or bolt, the space of guarantee first flowing lumen；It is fixed to complete the inner conductor layer
The inlet wire positioning module 12 is fixed in the core rod supporting sleeve 11 after module 13, ensures first feeding-passage
16 with the circulation of the recirculation hole, while ensure the positioning mould 122 and described rotate being correspondingly arranged for mould 132.
The PCT is wrapped up mould 141 to install to the core rod supporting sleeve 11 from the core rod supporting sleeve 11 port that discharges,
And realize the position that mould 141 is wrapped up the PCT in the core rod supporting sleeve 11 by the way that the stock mould 142 is fixedly mounted on
Limit, power applied to first linkage portion 144 in outside, detect PCT parcel mould 141 whether can with normal rotation,
Avoid the damage of the second motor and the first gear group 191 described in when PCT parcel mould 141 is stuck to cause normal use.
Similarly install and test the insulation parcel mould 151 and the wire finishing die 152.
The position of the first gear group 191 and the second gear group 192 is adjusted, ensures the first gear group 191
Normal with first linkage portion 144, the second gear group 192 and second linkage portion 154 is sequentially connected.
The compound module detected will be installed in the housing 2, ensure first feeding-passage 16, institute
State the connection of the second feeding-passage 17, the 3rd feeding-passage 18, and by the feeding assembly, the preceding gland, it is described after
Gland is fixed with the housing 2 installation, ensures that the plastic extruder is connected with the feeding assembly respectively.
Step S3 specifically, the metal inside by the effect of the positioning mould 122 ensure the metal inside it
Between distance, entering in first melt space, caused by the rotation of first motor output shaft described first oblique
Gear rotates, and drives second helical gear 136 to rotate, and so as to fulfill the adjacent rotation for rotating mould 132, makes molten condition
The conductor material produce certain rotation, also there is a degree of rotation in the conductor material being wrapped on the metal inside
Turn, the conductor material is further shaping plasticized in the forming part 134 to be formed fine and close and combined tightly with the metal inside
Close inner conductor layer.
The metal inside with the inner conductor layer successively second melt space parcel PTC heaters layer,
Composite insulation layer is wrapped up in the 3rd melt space, finally completes all parcel operations in the wire finishing die 152.
Since PCT parcel moulds 141 and the insulation parcel mould 151 all produce rotation, and in the work of the deflector
Under, the PCT materials and the insulating materials under molten condition produce 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
It is shaping plasticized in line mould 152 to form PTC heaters layer fine and close and compact with a upper wrapping layer, composite insulation layer.
The rotation direction of the PCT parcel moulds 141 and the insulation parcel mould 151 is on the contrary, in second melt space
When having wrapped up PTC layers of metal inside and having entered in the 3rd melt space, the melting insulation inside the 3rd melt space
Material can produce the rotation opposite with PTC layers, make fixation therebetween even closer, lift 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 non-limiting
's.Those skilled in the art understands, many changes can be carried out to it in the spirit and scope that the claims in the present invention are limited,
Modification, in addition it is equivalent, but fall within protection scope of the present invention.
Claims (10)
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,
Water Tank with Temp.-controlled, draw-gear and take-up reel, it is characterised in that the co-extruding machine head include compound module, housing, preceding gland and after
Gland, the compound module include core rod supporting sleeve, inlet wire positioning module, inner conductor layer module, PTC layers of module and insulating layer mould
Group, is equipped with the core rod supporting sleeve in the housing, is provided with the duct with annular convex platform in the core rod supporting sleeve, it is described into
Line positioning module, the inner conductor layer module, the PTC layers of module and the insulating layer module are mounted in the duct successively,
The core rod supporting sleeve both ends are fixed with the preceding gland and rear pressing cover positioning respectively；The PTC layers of module includes PCT bags
Mould and stock mould are wrapped up in, the core rod supporting sleeve sets first annular boss in the PTC layers of module position, and the PCT wraps up mould
The first linkage portion is set to coordinate with the first annular boss, the PCT parcels mould is slidably connected with the stock mould.
2. multi-layer co-extruded device as claimed in claim 1, it is characterised in that the PCT parcel moulds PCT parcel moulds 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
Being equipped with of one annular notches and the first annular portion realizes being coaxially disposed for the PCT parcel moulds and the stock mould.
3. multi-layer co-extruded device as claimed in claim 1, it is characterised in that the insulating layer module include insulation parcel mould and
Wire finishing die, the core rod supporting sleeve set the second annular convex platform in the insulating layer module position, and the insulation parcel mould is set
Second linkage portion coordinates with second annular convex platform, and the insulation parcel mould is slidably connected with the wire finishing die.
4. multi-layer co-extruded device as claimed in claim 3, it is characterised in that first linkage portion and second linkage portion
It is the gear teeth that are evenly arranged of annular, the compound module further includes the second brake assemblies, and second brake assemblies include the
One gear set, second gear group, the second motor and brake axle, the brake axle are fixed on the output shaft of second motor,
The first gear group and the second gear group are fixed on the brake axle, the first gear group and first linkage
Portion is equipped with, and the second gear group and second linkage portion are equipped with.
5. multi-layer co-extruded device as claimed in claim 4, it is characterised in that the first gear group is fixed on institute including one
The first gear on brake axle is stated, the second gear group includes a second gear being fixed on the brake axle, and
One the 3rd gear being connected at the same time with the second gear, the second linkage portion gear, the 3rd gear are arranged on institute
State on core rod supporting sleeve.
6. multi-layer co-extruded device as claimed in claim 2, it is characterised in that the edge of the inlet wire positioning module discharging end face
Part sets gap with the first annular boss, is the first flowing lumen, the PCT materials of the molten condition are through described first-class
Cavity enters in PCT parcel moulds；The discharge end center of the inlet wire positioning module is extended to form into PCT parcel moulds
Raised land, is the first distributary division.
7. multi-layer co-extruded device as claimed in claim 6, it is characterised in that the calculation formula of the first distributary division thickness h
For,
<mrow>
<mi>h</mi>
<mo>=</mo>
<mfrac>
<mrow>
<msub>
<mi>D</mi>
<mn>3</mn>
</msub>
<mo>-</mo>
<msub>
<mi>D</mi>
<mn>4</mn>
</msub>
</mrow>
<mrow>
<mn>2</mn>
<mrow>
<mo>(</mo>
<msub>
<mi>D</mi>
<mn>1</mn>
</msub>
<mo>-</mo>
<msub>
<mi>D</mi>
<mn>2</mn>
</msub>
<mo>)</mo>
</mrow>
</mrow>
</mfrac>
<mi>L</mi>
<mo>+</mo>
<mfrac>
<mrow>
<mn>2</mn>
<mrow>
<mo>(</mo>
<msub>
<mi>D</mi>
<mn>3</mn>
</msub>
<mo>-</mo>
<msub>
<mi>D</mi>
<mn>4</mn>
</msub>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<msub>
<mi>D</mi>
<mn>3</mn>
</msub>
<mo>-</mo>
<msub>
<mi>D</mi>
<mn>1</mn>
</msub>
</mrow>
</mfrac>
<mi>l</mi>
</mrow>
Wherein, D1For basal diameter of first distributary division on the inlet wire positioning module, D2Stretched for first distributary division
Enter the end face diameter of the PCT parcels 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.
8. a kind of usage right requires the application method of the multi-layer co-extruded device of 1 to 7 any one of them, it is characterised in that including
Step,
S1, debugs and installs the co-extruding machine head；
S2, two metal insides are actively released 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 parcel operation in the co-extruding machine head；
S4, the metal inside are completed after parcel operation again after Water Tank with Temp.-controlled cooling, by the draw-gear and described
Take-up reel is kept well.
9. application method as claimed in claim 8, it is characterised in that S1 is concretely comprised the following steps, and analyzes the heating electric to be made
The specification of cable, selection meet manufacturing conditions and the supporting core rod supporting sleeve, the inlet wire positioning module, the inner conductor layer
Module, the PTC layers of module and the insulating layer module；The PCT is wrapped up into mould from core rod supporting sleeve discharging port peace
It is filled in the core rod supporting sleeve, and is realized by the way that the stock mould is fixedly mounted in the core rod supporting sleeve to described
PCT wraps up the position restriction of mould, applies power to first linkage portion in outside, and whether detect PCT parcel mould can be with
Normal rotation, avoids the damage of the second motor and the first gear group described in when PCT parcel mould is stuck to cause normal use
It is bad；Similarly install and test the insulation parcel mould and the wire finishing die.
10. application method as claimed in claim 8, it is characterised in that S3 is concretely comprised the following steps, PCT parcel mould and described
Insulation parcel mould produces rotation under the action of second brake assemblies, and is being arranged on the PTC layers of module and described exhausted
Under deflector effect in edge layer module, the PCT materials and the insulating materials under molten condition produce more violent
Rotation, the melted material for making to be wrapped on the metal inside also rotate, and the melted material is further in the sizing
It is shaping plasticized in mould, the wire finishing die to form PTC heaters layer fine and close and compact with a upper wrapping layer, compound inslation
Layer.
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| CN108839323A (en) * | 2018-09-21 | 2018-11-20 | 杨明昆 | A kind of new type plastic pipeline extrusion forming device |
| CN108882396A (en) * | 2018-08-06 | 2018-11-23 | 芜湖市旭辉电工新材料有限责任公司 | A kind of uniform cloth fever band heat conductive filament laying tooling |
| CN108889788A (en) * | 2018-08-06 | 2018-11-27 | 芜湖市旭辉电工新材料有限责任公司 | A kind of heating cable aluminium alloy heat conductive filament's extrusion die |
| CN108971253A (en) * | 2018-08-10 | 2018-12-11 | 芜湖市旭辉电工新材料有限责任公司 | A kind of multistation aluminium alloy heat conductive filament's extrusion die |
| CN109041306A (en) * | 2018-08-10 | 2018-12-18 | 芜湖市旭辉电工新材料有限责任公司 | A kind of cable extrudes and is laid with heat conductive filament's assembly line |
| CN109068425A (en) * | 2018-08-10 | 2018-12-21 | 芜湖市旭辉电工新材料有限责任公司 | A kind of hot accompanying-heat cable production system of uniform cloth |
| 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 |
| CN113635532A (en) * | 2021-08-09 | 2021-11-12 | 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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