CN108297377A - A kind of double-wall corrugated pipe extrusion die inner heating device - Google Patents
A kind of double-wall corrugated pipe extrusion die inner heating device Download PDFInfo
- Publication number
- CN108297377A CN108297377A CN201810005424.5A CN201810005424A CN108297377A CN 108297377 A CN108297377 A CN 108297377A CN 201810005424 A CN201810005424 A CN 201810005424A CN 108297377 A CN108297377 A CN 108297377A
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- China
- Prior art keywords
- support tube
- helicla flute
- extrusion die
- heating element
- embedded
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
-
- 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
- B29C48/865—Heating
-
- 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
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Abstract
The invention discloses a kind of double-wall corrugated pipe extrusion die inner heating devices, heating element including strip and the temperature controller for controlling temp of heating element, it is inserted with support tube in the central passage of extrusion die, it is equipped in support tube into water return pipeline, the lateral wall of the support tube is equipped with storage tank and at least one helicla flute, the outer end face being located on the outer end perforation support tube of the helicla flute outside central passage, the heating element is embedded in helicla flute, it is embedded with temperature control element in the storage tank, the heating element and temperature control element are electrically connected with temperature controller respectively.The present invention facilitates the installation of pipe with small pipe diameter double-wall corrugated pipe extrusion die internal heater, to be conducive to improve the production efficiency and yield rate of double-wall corrugated pipe.
Description
Technical field
The present invention relates to plastic molding machinery technical field, more particularly, to being heated in a kind of double-wall corrugated pipe extrusion die
Device.
Background technology
Double-wall corrugated pipe is a kind of novel tube with cyclic structure outer wall and smooth internal walls, and operating temperature is subzero
Between 40 DEG C to 60 DEG C, and intensity is high, and anti-seismic performance is strong, and the resistance of fluids within pipes is small, fast due to its superior performance
Speed is widely applied.Double-wall corrugated pipe is generally by extrusion molding, in the prior art, double-wall corrugated for producing
The internal heater of cast aluminum heaters or mica heater etc is usually set in the central passage of the extrusion die of pipe.However work as
When the caliber of double-wall corrugated pipe is smaller, also correspondingly reduced for producing the size of extrusion die of double-wall corrugated pipe, and squeeze
Go out in the central passage of die head also to need to wear corresponding water inlet and therefore water return pipeline is difficult in the central passage of extrusion die
The internal heater for being arranged and installing existing cast aluminum heaters or mica heater etc, in particular, when the length of central passage
When degree is longer, the above problem can be more serious, and the extrusion die without setting internal heater can greatly influence double-wall corrugated pipe
Yield rate and production efficiency.
Invention content
The purpose of the present invention is to solve add for being molded in present in the double-wall corrugated pipe extrusion die of pipe with small pipe diameter
The problem of difficult yield rate and production efficiency to influence double-wall corrugated pipe is arranged in hot device, and it is crowded to provide a kind of double-wall corrugated pipe
Go out die head inner heating device, facilitates the installation of pipe with small pipe diameter double-wall corrugated pipe extrusion die internal heater, it is double to be conducive to improve
The production efficiency and yield rate of wall bellows.
To achieve the goals above, the present invention uses following technical scheme：
A kind of double-wall corrugated pipe extrusion die inner heating device, including the heating element of strip and for controlling temp of heating element
Temperature controller, be inserted with support tube in the central passage of extrusion die, be equipped in support tube into water return pipeline, the branch
The lateral wall of stay tube is equipped with storage tank and at least one helicla flute, is located at center on the outer end perforation support tube of the helicla flute
Outer end face outside channel, the heating element are embedded in helicla flute, and temperature control element is embedded in the storage tank, described to add
Thermal element and temperature control element are electrically connected with temperature controller respectively.
A support tube is arranged in the present invention in the central passage of extrusion die, and spiral shell is arranged on the lateral wall of support tube
Spin slot, in this way, the strip heating element of electric heating item etc can be easily helically embedded in helicla flute by we, then again
Support tube is inserted into the central passage of extrusion die, to greatly simplify the installation of heating element.In particular, for diameter
For smaller, the longer extrusion die of length, technical scheme of the present invention can ensure that extrusion die conveniently sets up interior heating dress
It sets, and can also easily be worn into water return pipeline in support tube, while avoiding heating element and between water return pipeline
It is in direct contact.Since heating element is embedded in helicla flute, make heating element that can be formed evenly to extrusion die
Heating.It can be understood that by the effect of temperature control element and temperature controller, we can accurately control the heating of heating element
Temperature, and the temperature control element being arranged in the storage tank of support tube lateral wall can accurately inductive heating element add extrusion die
Hot temperature.
Preferably, the quantity of the helicla flute is 2, and it is spaced apart on the circumferencial direction of support tube, spiral
The inside and outside both ends of slot penetrate through the interior outer end face of support tube respectively, and 2 helicla flutes are passing through lead-over groove at support tube inner face
It is connected, the storage tank is located at the centre position of central passage length direction, and one is additionally provided on the lateral wall of support tube
Spiral helicine guiding groove, the outer end face of described guiding groove one end perforation support tube, the other end are connected to storage tank, in the guiding groove
Connecting wire equipped with connection temperature control element and temperature controller.
Since support pipe surface is equipped with 2 helicla flutes, in this way, we can make the heating element of strip first by the outer of support tube
End is embedded to inner end in a helicla flute, is then embedded after bending at lead-over groove in another helicla flute, to make to add
Two control terminals of thermal element are respectively positioned on the outer end of support tube, have not only facilitated the arrangement of circuit, but also be conducive to the uniform of heating element
Heating.And temperature control element is embedded the connecting wire in the guiding groove of support pipe surface by helical form and is connected with temperature controller,
So as to make to form uniform spacing between connecting wire and heating element.
Preferably, the heating element is glass fibre heating tape.Glass fibre heating tape both has good insulation
Performance and high temperature resistance, and it can be easily bent winding, to be conducive to the arrangement in support pipe surface.
Preferably, being wound with Furtulon high temperature adhesive tape on the outside of support tube.Furtulon high temperature adhesive tape can bear to heat
The high temperature that element generates, while preferable insulation protection can be formed to heating element, so that heating element is formed one with support tube
It is whole, facilitate support tube to be plugged into the central passage of extrusion die.
Preferably, the cross section of the helicla flute is rectangular, the central passage madial wall of extrusion die is equipped with and spiral shell
Spin slot corresponding limiting slot is embedded with the insulation strip of elasticity in limiting slot, and the height of the insulation strip is more than the depth of limiting slot,
To make insulation strip be higher by the side limit of limiting slot in helicla flute and compress the heating element in helicla flute.
In this scenario, limiting slot corresponding with the helicla flute of support tube is set on central passage madial wall, and is being limited
Setting height is more than the insulation strip of limit groove depth in slot, in this way, insulation strip be higher by limiting slot part can enter it is corresponding
Heating element is compressed in helicla flute, you can good positioning and insulation are formed to heating element, while being connected across limiting slot and spiral shell
Insulation strip between spin slot is conducive to make to form reliable positioning between support tube and extrusion die.
Preferably, the insulation strip is installed in limiting slot by the following method：
A. two helicla flutes and a lead-over groove, circle of two helicla flutes in support tube are processed on the lateral wall of support tube
It is spaced apart in circumferential direction, lead-over groove is positioned close between the helicla flute of support tube inner face, the both ends of lead-over groove and spiral
Slot rounding off connects；
B. it is molded go out using insulation strip made of silicon rubber, insulation strip includes two spiral helicine crimping items and one
Be connected to two crimping item between transition strips, crimp item central diameter be helicla flute central diameter half to 3/4ths, and
And the height for crimping item is more than the depth of limiting slot, the outside of transition strips is equipped with notch, to make the height of transition strips be less than pressure
The height of narrow bars；
C. heating element is embedded in first helicla flute, then bending is embedded in lead-over groove, then bending is embedded second
In helicla flute；
D. it struts first in insulation strip crimping item and is embedded in first helicla flute, be then embedded transition strips
It in lead-over groove, then struts the Article 2 crimping item in insulation strip and is embedded in Article 2 helicla flute, by means of insulation
The elasticity of item, insulation strip at this time is shunk and close covering heating elements, and crimping item therein is higher by helicla flute, transition strips
Then it is trapped in lead-over groove；
E., support tube is aligned to the central passage of extrusion die, is higher by the crimping centring channel of support tube outer surface
Limiting slot, then rotation and axial advancement support tube, at this time the crimping item on support tube i.e. enter limiting slot in；
F. when support tube axial advancement in place when, crimp and fitted in limiting slot on the outside of item, crimping item be higher by the interior of limiting slot
Lateral spacing position is in helicla flute and compresses the heating element in helicla flute, to complete the installation of insulation strip.
The present invention molds flexible insulation strip by molded method, spiral helicine crimping in the insulation strip
The central diameter of item is less than the central diameter of helicla flute.Insulation strip is wound, is embedded in the helicla flute of support pipe surface in this way, working as us
When, the central diameter for crimping item is stretched, to make crimping item as elastic is equally tightened in the helicla flute of support tube, in turn
Facilitate and is installed to support tube in central passage by way of helical action.In particular, the present invention is in two crimping of connection
Notch is set on the outside of the transition strips of item, in this way, when insulation strip is embedded support pipe surface, the surface meeting of transition strips and support tube
Surface flushes or less than support pipe surface, when putting into support tube in central passage, can avoid being higher by support pipe surface
Transition strips form interference.
Therefore, the present invention has the advantages that：Facilitate the peace of pipe with small pipe diameter double-wall corrugated pipe extrusion die internal heater
Dress, to be conducive to improve the production efficiency and yield rate of double-wall corrugated pipe.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the present invention.
Fig. 2 is a kind of structural schematic diagram of support tube.
Fig. 3 is another partial structural diagram of the present invention.
Fig. 4 is a kind of structural schematic diagram of insulation strip.
In figure：1, extrusion die 11, central passage 12, limiting slot 2, support tube 21, helicla flute 22, storage tank
23, lead-over groove 24, guiding groove 3, heating element 4, temperature control element 5, into water return pipeline 6, insulation strip 61, crimping item 62,
Transition strips 621, notch.
Specific implementation mode
The present invention will be further described with specific implementation mode below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, a kind of double-wall corrugated pipe extrusion die inner heating device has one at the center of extrusion die
The central passage 11 of a cylinder specifically includes the heating element 3 of strip, for the temperature control element 4 of sensing temperature and for controlling
The temperature controller of temp of heating element processed（It is not shown in figure）, cylindrical support tube is inserted in the central passage of extrusion die
2, it is equipped in support tube into water return pipeline 5, heating element and temperature control element are arranged on support tube lateral wall.It can manage
Solution, heater element tool is there are two control terminal, and the control terminal of heater element should be electrically connected with temperature controller, and temperature control element then has
One signal output end, the signal output end should be electrically connected with temperature controller.In this way, when we set heating temperature on temperature controller
After degree, you can start heating element fever, temperature control element exports a corresponding electric signal after sensing temperature to temperature controller；
When the temperature of heating element reaches setting value, temperature controller can add according to the electric signal control of the temperature control element output received
The working condition of thermal element, to make the temperature of heating element control in the range of setting.Due to being used for form double wall ripple
The extrusion die of pipe and corresponding temp of heating element control mode belong to the prior art, therefore, are not done in the present embodiment
More descriptions.
For the ease of installation, a storage tank 22 and at least one helicla flute can be arranged in we on the lateral wall of support tube
21, the outer end face of the outer end perforation support tube of helicla flute, and the heating element of strip is embedded in helicla flute.In addition, temperature control is first
Part is arranged in storage tank, and heating element and temperature control element are electrically connected by connecting wire with temperature controller respectively.It needs to illustrate
It is that the cross section of helicla flute is preferably rectangular, consequently facilitating heating element is embedded；Thermocouple can be used in temperature control element, and
And the point midway that central passage length direction is corresponded on support tube should be preferably arranged in storage tank, to be conducive to accurately
Control the heating temperature of heating element.In addition, support tube, which is located at one end in central passage, in the present embodiment is known as inner end,
One end outside central passage is known as outer end.
When installation, the heating element of heating wire one kind first first can be helically embedded the spiral in support pipe surface by we
In slot, then support tube is inserted into the central passage of extrusion die again, can be worn into water return pipeline in support tube at this time.
Certainly, as shown in Fig. 2, also two helicla flutes can be arranged on the surface of support tube in we, and two helicla flutes exist
It is spaced apart on the circumferencial direction of support tube, the inside and outside both ends of helicla flute penetrate through the interior outer end face of support tube, two spirals respectively
Slot is being connected at support tube inner face by lead-over groove 23.In this way, we can first be incited somebody to action by the outer end of support tube to inner end
Heating element is embedded in first helicla flute, is then embedded in lead-over groove after the inner end of the helicla flute is by heating element bending
It is interior, it will from the inside to the outside be embedded in Article 2 helicla flute after heating element bending again later, to make two of heating element
Control terminal is respectively positioned on the outer end of support tube, to facilitate arrangement and the connection of the connecting wire of connection heating element and temperature controller, and
And increase the layout density of support pipe surface heating element, to be conducive to being evenly heated for heating element again.
Analogously, a spiral helicine guiding groove 24, guiding groove one can be also arranged in we on the lateral wall of support tube
The outer end face of end perforation support tube, the other end are connected to storage tank, the connection of connection temperature control element and temperature controller are arranged in guiding groove
Conducting wire.Preferably, the screw pitch of guiding groove should be equal with the screw pitch of helicla flute, and two helicla flutes are in the circumferencial direction of support tube
On be uniformly distributed.And guiding groove is then arranged between two helicla flutes, and guiding groove is equal with the spacing of two helicla flutes.
Preferably, glass fibre heating tape can be used in heating element, to make heating element have good insulation performance
And high temperature resistance, and can easily be bent wound on support pipe surface.
In addition, we can also wind Furtulon high temperature adhesive tape on the outside of support tube, to make heating element, temperature control element etc.
An entirety is formed in support tube, support tube is facilitated to insert as arrived in the central passage of extrusion die, and heat safe Teflon is high
Warm adhesive tape can form heating element preferable insulation protection and fixation, and heating element is avoided to be taken off out of support tube helicla flute
Go out.
As a kind of alternative solution to Furtulon high temperature adhesive tape, as shown in figure 3, we can be logical at the center of extrusion die
Limiting slot corresponding with helicla flute 12 is set on road madial wall, that is to say, that limiting slot and helicla flute are combined together structure at this time
At a helical duct.The insulation strip 6 of elasticity is embedded in limiting slot, the height of the insulation strip is more than the depth of limiting slot, from
And the inner side limiting-position that insulation strip is higher by limiting slot is made to compress the heating unit in helicla flute on the inside of insulation strip at this time in helicla flute
Part makes heating element reliable location, and is conducive to improve the insulation performance of heating element, due to distinguishing inside and outside insulation strip
It is connected across in helicla flute and limiting slot, therefore is conducive to make to form reliable axially position between support tube and extrusion die.
Further, insulation strip can be installed in limiting slot by the following method：
A. two helicla flutes and a lead-over groove, circle of two helicla flutes in support tube are processed on the lateral wall of support tube
It is spaced apart in circumferential direction, lead-over groove is set, and is set between the helicla flute close to support tube inner face, it is preferable that lead-over groove is in half
Circle, to make the both ends of lead-over groove be connect respectively with helicla flute rounding off；
B. it is produced using insulation strip made of silicon rubber with molded method, as shown in figure 4, insulation strip includes two
Spiral helicine crimping item 61 and the transition strips 62 being integrally attached between the end of two crimping items, crimp in item
Diameter should be less than the central diameter of helicla flute, it is preferable that the central diameter for crimping item is the half of helicla flute central diameter to 3/4ths.This
Outside, the height for crimping item should be greater than the depth of limiting slot, it is preferable that crimping the height of item should be equal to plus the thickness of heating element
The depth of limiting slot adds the depth of helicla flute, to enable crimping item reliably to compress the heating element in helicla flute；
C. heating element is embedded in first helicla flute, then will be embedded in lead-over groove after heating element bending, then will
Heating element bending is simultaneously embedded in Article 2 helicla flute；
D. it struts first in insulation strip crimping item and is embedded it from outside to inside in first helicla flute, then will
Transition strips are embedded in lead-over groove, then strut the Article 2 crimping item in insulation strip and it is embedded from the inside to the outside in Article 2
In helicla flute, item is crimped at this time and shrinks generation elasticity, to closely cover the heating element in helicla flute, crimping item therein is high
Go out helicla flute；
E., support tube inner end is directed to the central passage of extrusion die, the crimping centring for being higher by support tube outer surface is logical
Limiting slot on road, then axials advancement support tube on one side rotate while, and the crimping item on support tube enters helical form at this time
Limiting slot in.In order to avoid the interference of transition strips, a notch 621 can be arranged in the outside of transition strips in we, to make
The height for crossing item is less than the height of crimping item, to ensure that transition strips are trapped in lead-over groove completely；
F. when support tube axial advancement in place when, crimp and fitted in limiting slot on the outside of item, crimping item be higher by the interior of limiting slot
Lateral spacing position is in helicla flute and compresses the heating element in helicla flute, to complete the installation of insulation strip.
Claims (6)
1. a kind of double-wall corrugated pipe extrusion die inner heating device, including the heating element of strip and for controlling heating element temperature
The temperature controller of degree, characterized in that be inserted with support tube in the central passage of extrusion die, be equipped in support tube into return water
The lateral wall of pipeline, the support tube is equipped with storage tank and at least one helicla flute, the outer end perforation support of the helicla flute
The outer end face being located on pipe outside central passage, the heating element are embedded in helicla flute, and temperature is embedded in the storage tank
Element is controlled, the heating element and temperature control element are electrically connected with temperature controller respectively.
2. a kind of double-wall corrugated pipe extrusion die inner heating device according to claim 1, characterized in that the helicla flute
Quantity be 2, and be spaced apart on the circumferencial direction of support tube, the inside and outside both ends of helicla flute penetrate through support tube respectively
Interior outer end face, 2 helicla flutes are being connected at support tube inner face by lead-over groove, and the storage tank is located at central passage
The centre position of length direction is additionally provided with a spiral helicine guiding groove, described guiding groove one end on the lateral wall of support tube
The outer end face of support tube is penetrated through, the other end is connected to storage tank, the company of connection temperature control element and temperature controller is equipped in the guiding groove
Connect conducting wire.
3. a kind of double-wall corrugated pipe extrusion die inner heating device according to claim 1, characterized in that the heating unit
Part is glass fibre heating tape.
4. a kind of double-wall corrugated pipe extrusion die inner heating device according to claim 1, characterized in that outside support tube
Side is wound with Furtulon high temperature adhesive tape.
5. a kind of double-wall corrugated pipe extrusion die inner heating device according to claim 1, characterized in that the helicla flute
Cross section it is rectangular, the central passage madial wall of extrusion die is equipped with limiting slot corresponding with helicla flute, and limiting slot embeds
If flexible insulation strip, the height of the insulation strip is more than the depth of limiting slot, to make insulation strip be higher by the one of limiting slot
Lateral spacing position is in helicla flute and compresses the heating element in helicla flute.
6. a kind of double-wall corrugated pipe extrusion die inner heating device according to claim 5, characterized in that the insulation strip
It is installed in limiting slot by the following method：
A. two helicla flutes and a lead-over groove, circle of two helicla flutes in support tube are processed on the lateral wall of support tube
It is spaced apart in circumferential direction, lead-over groove is positioned close between the helicla flute of support tube inner face, the both ends of lead-over groove and spiral
Slot rounding off connects；
B. it is molded go out using insulation strip made of silicon rubber, insulation strip includes two spiral helicine crimping items and one
Be connected to two crimping item between transition strips, crimp item central diameter be helicla flute central diameter half to 3/4ths, and
And the height for crimping item is more than the depth of limiting slot, the outside of transition strips is equipped with notch, to make the height of transition strips be less than pressure
The height of narrow bars；
C. heating element is embedded in first helicla flute, then bending is embedded in lead-over groove, then bending is embedded second
In helicla flute；
D. it struts first in insulation strip crimping item and is embedded in first helicla flute, be then embedded transition strips
It in lead-over groove, then struts the Article 2 crimping item in insulation strip and is embedded in Article 2 helicla flute, by means of insulation
The elasticity of item, insulation strip at this time is shunk and close covering heating elements, and crimping item therein is higher by helicla flute, transition strips
Then it is trapped in lead-over groove；
E., support tube is aligned to the central passage of extrusion die, is higher by the crimping centring channel of support tube outer surface
Limiting slot, then rotation and axial advancement support tube, at this time the crimping item on support tube i.e. enter limiting slot in；
F. when support tube axial advancement in place when, crimp and fitted in limiting slot on the outside of item, crimping item be higher by the interior of limiting slot
Lateral spacing position is in helicla flute and compresses the heating element in helicla flute, to complete the installation of insulation strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810005424.5A CN108297377B (en) | 2018-01-03 | 2018-01-03 | Heating device in double-wall corrugated pipe extrusion die head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810005424.5A CN108297377B (en) | 2018-01-03 | 2018-01-03 | Heating device in double-wall corrugated pipe extrusion die head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108297377A true CN108297377A (en) | 2018-07-20 |
| CN108297377B CN108297377B (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810005424.5A Active CN108297377B (en) | 2018-01-03 | 2018-01-03 | Heating device in double-wall corrugated pipe extrusion die head |
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| CN205364281U (en) * | 2016-01-18 | 2016-07-06 | 东莞市众一新材料科技有限公司 | A granulator for producing nylon materials |
| WO2017078999A1 (en) * | 2015-11-04 | 2017-05-11 | Te Connectivity Corporation | Extruder for use in an additive manufacturing process |
| CN207983947U (en) * | 2018-01-03 | 2018-10-19 | 浙江双林机械股份有限公司 | Heating structure in a kind of double-wall corrugated pipe extrusion die |
-
2018
- 2018-01-03 CN CN201810005424.5A patent/CN108297377B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56120012A (en) * | 1980-02-27 | 1981-09-21 | Fujikura Ltd | Method of manufacturing crosslinked insulated cable |
| CN1586866A (en) * | 2004-09-28 | 2005-03-02 | 杭州波达塑业有限公司 | Process for producing large caliber hard polyvinyl chloride double wall corrugated pipe |
| WO2017078999A1 (en) * | 2015-11-04 | 2017-05-11 | Te Connectivity Corporation | Extruder for use in an additive manufacturing process |
| CN205364281U (en) * | 2016-01-18 | 2016-07-06 | 东莞市众一新材料科技有限公司 | A granulator for producing nylon materials |
| CN207983947U (en) * | 2018-01-03 | 2018-10-19 | 浙江双林机械股份有限公司 | Heating structure in a kind of double-wall corrugated pipe extrusion die |
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