CN206201437U - A kind of two-layer compound PP R pipe molds - Google Patents
A kind of two-layer compound PP R pipe molds Download PDFInfo
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- CN206201437U CN206201437U CN201620914210.6U CN201620914210U CN206201437U CN 206201437 U CN206201437 U CN 206201437U CN 201620914210 U CN201620914210 U CN 201620914210U CN 206201437 U CN206201437 U CN 206201437U
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Abstract
The utility model is related to provide a kind of two-layer compound PP R pipe molds, including mould linkage section, die holder, outer die body and forming part, one end of the die holder sets mould linkage section, the other end of the die holder is connected with the outer die body, the outer die body end is connected with the forming part, the outer die body is connected by the double-deck melt flow channel being located in it with forming part, and raw material are extruded into PP R pipes along the double-deck melt flow channel into after melting in mould by the mould linkage section into the forming part.Design of the present utility model will be using double-deck melt flow channel structure, internal layer melt flow channel mould controls internal layer extrusion capacity, outer layer melt flow channel mould controls outer layer extrusion capacity, then the melt in internal layer melt flow channel with the outer layer melt flow channel covers in the fluid passage to be formed and converges in the outer die body and the contraction, melt after converging leads to mould molding portion through runner, by the extrusion molding of mould molding portion, reaching mould can meet the purpose of PP R double-layer coextrusions production.
Description
Technical field
The utility model is related to technical field of mold, and in particular to a kind of two-layer compound PP-R needed for plastic conduit production
Pipe mold.
Background technology
PP-R pipes are called three type PA tubes, and extruded as tubing using atactic copolymerized polypropene, injection turns into pipe fitting.
It is the novel plastic pipeline product of European development and application at the beginning of the nineties.PP-R is the end of the eighties, and 5% is made using gas-phase copolymerization technique
Left and right PE in the strand of PP randomly homogeneous polymerization and turn into pipeline material of new generation.It has preferable shock resistance
And long-term creep behaviour.It is single layer structure that PP-R pipe is most in the market, and produces the mould of the PP-R pipe with individual layer
Based on extrusion, it is impossible to meet the production of double-layer coextrusion product PP-R pipe.
Utility model content
The utility model is to overcome at least one defect described in above-mentioned prior art, there is provided a kind of two-layer compound PP-R pipes
Material mould, including mould linkage section, die holder, outer die body and forming part, one end of the die holder set mould linkage section, described
The other end of die holder is connected with the outer die body, and the outer die body end is connected with the forming part, and the outer die body is by setting
Double-deck melt flow channel in it is connected with forming part, and raw material are after the mould linkage section enters and melts in mould along institute
State double-deck melt flow channel and be extruded into PP-R pipes into the forming part.Design of the present utility model will be using double-deck melt flow channel
Structure, internal layer melt flow channel mould control internal layer extrusion capacity, outer layer melt flow channel mould control outer layer extrusion capacity, then in internal layer
Melt flow channel covers the fluid passage Nei Hui to be formed with the melt in the outer layer melt flow channel in the outer die body and the contraction
Close, the melt after converging leads to mould molding portion through runner, by the extrusion molding of mould molding portion, reaching mould can meet PP-R
The purpose of double-layer coextrusion production.
Preferably, the double-deck melt flow channel includes outer layer melt flow channel, internal layer melt flow channel, outer die body and contraction
Set, the internal layer melt flow channel includes the mould linkage section feeding mouth, the internal layer conveyor screw bottom that are arranged on the mould linkage section
Portion's flow manifold and outer layer conveyor screw, the mould linkage section feeding mouth pass through the die holder and the internal layer conveyor screw bottom
Flow manifold constitutes a passage, and the passage is also formed with the helicla flute and the external mold body of setting on the outer layer conveyor screw
Passage connect；The outer layer melt flow channel include be located at outer die body upper end outer layer feeding mouth and internal layer conveyor screw, it is described
Outer layer feeding mouth is connected with the internal layer conveyor screw；The internal layer melt flow channel is with the outer layer melt flow channel in the outer die body
And the fluid passage for shrinking set formation is converged, the runner after converging is connected with the forming part.Raw material are connected by mould
Section feeding mouth and by die holder, into mould internal layer conveyor screw bottom tapping runner, by internal layer conveyor screw runner by raw material
Melt is shunted, and the passage that the helicla flute and external mold body then along outer layer conveyor screw are formed carries out axial screw motion, and realizing will
The melt of raw material tentatively merges plastication；Raw material enter internal layer conveyor screw also by outer layer feeding mouth simultaneously, by many
Weight annular groove progressively balances unilateral thrust so that the discharging of the melt of raw material reaches equilibrium state, from internal layer melt flow channel with
Melt after the thawing of outer layer melt flow channel covers the fluid passage to be formed and converges in the outer die body and the contraction, the stream after converging
Road is connected with the forming part.
Preferably, the forming part includes mouth mold and core rod, the mold core fixing device is in the mouth mold and described
Runner after core rod converges with the internal layer melt flow channel with the passage that the mouth mold is constituted with the outer layer melt flow channel is carried out
Connection.Plasticizing is merged by ectonexine with the melt after the thawing of outer layer melt flow channel from internal layer melt flow channel, mould molding is reached
Part, from large to small, mixed melt layer can be entered one to moulding section passage by the tapered structure of the passage, such structure
Step compression compact, and by mouth mold and core rod straight section and it is extruded into pipe formation PP-R pipe.
Preferably, the internal layer conveyor screw bottom tapping runner spiral is divided into six strands of passages.It is such design be by
The melt of raw material is divided into six bursts of thrust to reduce the inflow of mould linkage section melt by one stream spiral, contributes to mould
The trouble-free operation of tool.
Preferably, the internal layer conveyor screw uses annular design.Due to outer layer melt flow channel use unilateral pan feeding, i.e., by
Outer layer feeding mouth pan feeding, internal layer spiral mould compression is uneven, therefore internal layer conveyor screw is used into annular design, by multi-ringed
Groove progressively balances unilateral thrust so that melt discharging reaches equilibrium state, it is ensured that the trouble-free operation of mould.
Preferably, being additionally provided with mouth mold pressing plate outside the mouth mold.It is smooth in order to allow mould molding portion to work, in mouth mold week
Mouth mold pressing plate is additionally provided with outside enclosing, it is ensured that normal work of the forming part in the case where certain pressure is born.
Compared with prior art, the beneficial effects of the utility model are：
Design of the present utility model will be using double-deck melt flow channel structure, internal layer melt flow channel mould control internal layer extrusion
Amount, outer layer melt flow channel mould control outer layer extrusion capacity is then molten in internal layer melt flow channel with the outer layer melt flow channel
Body covers in the fluid passage to be formed and converges in the outer die body and the contraction, and the melt after converging leads to mould molding through runner
Portion, by the extrusion molding of mould molding portion, reaching mould can meet the purpose of PP-R double-layer coextrusions production.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is internal layer conveyor screw bottom tapping flow passage structure schematic diagram of the present utility model；
Fig. 3 is PP-R pipe schematic cross-section.
Specific embodiment
The utility model is further described with reference to specific embodiment.Wherein, being for illustration only property of accompanying drawing
Illustrate, expression is only schematic diagram, rather than pictorial diagram, it is impossible to be interpreted as the limitation to this patent；In order to this reality is better described
With new embodiment, accompanying drawing some parts have omission, zoom in or out, and do not represent the size of actual product；To ability
For field technique personnel, some known features and its explanation may be omitted and will be understood by accompanying drawing.
The same or analogous part of same or analogous label correspondence in the accompanying drawing of the utility model embodiment；In this practicality
In new description, it is to be understood that if having term " on ", D score, the orientation of the instruction such as "left", "right" or position relationship be
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than instruction
Or imply that the device or element of meaning must be with specific orientation, to be retouched in specific azimuth configuration and operation, therefore accompanying drawing
Term the being for illustration only property explanation of position relationship is stated, it is impossible to be interpreted as the limitation to this patent, for the common skill of this area
For art personnel, the concrete meaning of above-mentioned term can be as the case may be understood.
Embodiment
As shown in Figure 1 to Figure 3, a kind of two-layer compound PP-R pipe mould of the utility model most preferred embodiment, including mould
Tool linkage section 1, die holder 2, outer die body 4 and forming part, one end of the die holder 2 set mould linkage section 1, the die holder 2
The other end is connected with the outer die body 4, and the end of the outer die body 4 is connected with the forming part, and the outer die body 4 is by being located at
Double-deck melt flow channel in it is connected with forming part, and raw material are after the mould linkage section 1 enters and melts in mould along institute
State double-deck melt flow channel and be extruded into PP-R pipes into the forming part.Design of the present utility model will be using double-deck melt flow channel
Structure, internal layer melt flow channel mould control internal layer extrusion capacity, outer layer melt flow channel mould control outer layer extrusion capacity, then in internal layer
Melt flow channel covers the fluid passage Nei Hui to be formed with the melt in the outer layer melt flow channel in the outer die body and the contraction
Close, the melt after converging leads to mould molding portion through runner, by the extrusion molding of mould molding portion, reaching mould can meet PP-R
The purpose of double-layer coextrusion production.
Preferably, the double-deck melt flow channel includes outer layer melt flow channel, internal layer melt flow channel, outer die body 4 and receives
Contracting set 6, the internal layer melt flow channel includes the mould linkage section feeding mouth, the interior helical layer that are arranged on the mould linkage section 2
The bottom tapping runner of body 5 and outer layer conveyor screw 3, the feeding mouth of mould linkage section 1 pass through the die holder 2 and the internal layer spiral shell
Rotation body 5 bottom tapping runner constitutes a passage, and the passage also with the helicla flute that sets on the outer layer conveyor screw 3 and described
The passage that outer die body 4 is formed is connected；The outer layer melt flow channel include be located at the outer layer feeding mouth 10 of the upper end of outer die body 4 with it is interior
Helical layer body 5, the outer layer feeding mouth 10 is connected with the internal layer conveyor screw 5；The internal layer melt flow channel is molten with the outer layer
Body runner converges in the outer die body 4 and the fluid passage for shrinking the formation of set 6, and the runner after converging connects with the forming part
Connect.Raw material by mould linkage section feeding mouth and by die holder, into mould internal layer conveyor screw bottom tapping runner, by internal layer
Conveyor screw runner shunts raw material melt, and the passage that the helicla flute and external mold body then along outer layer conveyor screw are formed carries out axle
To screw, the melt of raw material is tentatively merged plastication by realization；Raw material enter also by outer layer feeding mouth simultaneously
Internal layer conveyor screw, is progressively balanced unilateral thrust by multi-ringed groove so that the melt discharging of raw material reaches equilibrium state,
Melt from after internal layer melt flow channel and the thawing of outer layer melt flow channel covers the fluid to be formed and leads in the outer die body and the contraction
Road converges, and the runner after converging is connected with the forming part.
Preferably, the forming part include mouth mold 9 and core rod 8, the fixing device of the core rod 8 in the mouth mold 9, and
The core rod 8 converge with the outer layer melt flow channel with the internal layer melt flow channel with the passage that the mouth mold 9 is constituted after stream
Road is attached.Plasticizing is merged by ectonexine with the melt after the thawing of outer layer melt flow channel from internal layer melt flow channel, mould is reached
Tool moulding section, from large to small, the tapered structure of the passage, such structure can be by mixed melt for moulding section passage
The further compression compact of layer, and by mouth mold and core rod straight section and it is extruded into pipe formation PP-R pipe.
Preferably, the bottom tapping runner spiral of the internal layer conveyor screw 5 is divided into six strands of passages.It is such design be by
The melt of raw material is divided into six bursts of thrust to reduce the inflow of mould linkage section melt by one stream spiral, contributes to mould
The trouble-free operation of tool.
Preferably, the internal layer conveyor screw 5 uses annular design.Because outer layer melt flow channel uses unilateral pan feeding, i.e.,
By outer layer feeding mouth pan feeding, the compression of internal layer spiral mould is uneven, therefore internal layer conveyor screw is used into annular design, by multiple ring
Shape groove progressively balances unilateral thrust so that melt discharging reaches equilibrium state, it is ensured that the trouble-free operation of mould.
Preferably, being additionally provided with mouth mold pressing plate 7 outside the mouth mold 9.It is smooth in order to allow mould molding portion to work, in mouth mold
Surrounding is outer to be additionally provided with mouth mold pressing plate, it is ensured that normal work of the forming part in the case where certain pressure is born.
Compared with prior art, the beneficial effects of the utility model are：
Design of the present utility model will be using double-deck melt flow channel structure, internal layer melt flow channel mould control internal layer extrusion
Amount, outer layer melt flow channel mould control outer layer extrusion capacity is then molten in internal layer melt flow channel with the outer layer melt flow channel
Body covers in the fluid passage to be formed and converges in the outer die body and the contraction, and the melt after converging leads to mould molding through runner
Portion, by the extrusion molding of mould molding portion, reaching mould can meet the purpose of PP-R double-layer coextrusions production.
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to implementation method of the present utility model.For those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms.There is no need and unable to give all of implementation method
It is exhaustive.All any modification, equivalent and improvement made within spirit of the present utility model and principle etc., should be included in
Within the utility model scope of the claims.
Claims (6)
1. a kind of two-layer compound PP-R pipe mould, including mould linkage section（1）, die holder（2）, outer die body（4）And forming part,
The die holder（2）One end set mould linkage section（1）, the die holder（2）The other end and the outer die body（4）Connection, institute
State outer die body（4）End be connected with the forming part, it is characterised in that the outer die body（4）By the bilayer being located in it
Melt flow channel is connected with forming part, and raw material pass through the mould linkage section（1）Along described double-deck molten after melting in into mould
Body runner is extruded into PP-R pipes into the forming part.
2. two-layer compound PP-R pipe mould according to claim 1, it is characterised in that the double-deck melt flow channel includes
Outer layer melt flow channel, internal layer melt flow channel, outer die body（4）And shrink set（6）,
The internal layer melt flow channel includes being arranged on the mould linkage section（1）On mould linkage section feeding mouth, interior helical layer
Body（5）Bottom tapping runner and outer layer conveyor screw（3）, the mould linkage section feeding mouth is by the die holder（2）With it is described
Internal layer conveyor screw（5）Bottom tapping runner constitute a passage, and the passage also with the outer layer conveyor screw（3）The spiral shell of upper setting
Spin slot and the outer die body（4）The passage of formation is connected；
The outer layer melt flow channel include be located at outer die body upper end outer layer feeding mouth（10）With internal layer conveyor screw（5）, it is described
Outer layer feeding mouth（10）With the internal layer conveyor screw（5）Connect；
The internal layer melt flow channel is with the outer layer melt flow channel in the outer die body（4）And described contraction covers（6）The stream of formation
Body passage converges, and the runner after converging is connected with the forming part.
3. two-layer compound PP-R pipe mould according to claim 2, it is characterised in that the forming part includes mouth mold
（9）And core rod（8）, the core rod（8）Fixing device is in the mouth mold（9）It is interior, and the core rod（8）With the mouth mold（9）Structure
Into passage converge with the outer layer melt flow channel with the internal layer melt flow channel after runner be attached.
4. two-layer compound PP-R pipe mould according to claim 2, it is characterised in that the internal layer conveyor screw（5）Bottom
Portion's flow manifold spiral is divided into six strands of passages.
5. two-layer compound PP-R pipe mould according to claim 2, it is characterised in that the internal layer conveyor screw（5）Adopt
Use annular design.
6. two-layer compound PP-R pipe mould according to claim 3, it is characterised in that in the mouth mold（9）Also set outward
There is mouth mold pressing plate（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620914210.6U CN206201437U (en) | 2016-08-22 | 2016-08-22 | A kind of two-layer compound PP R pipe molds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620914210.6U CN206201437U (en) | 2016-08-22 | 2016-08-22 | A kind of two-layer compound PP R pipe molds |
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| Publication Number | Publication Date |
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| CN206201437U true CN206201437U (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620914210.6U Active CN206201437U (en) | 2016-08-22 | 2016-08-22 | A kind of two-layer compound PP R pipe molds |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106514986A (en) * | 2016-08-22 | 2017-03-22 | 广东联塑科技实业有限公司 | Double-layer combined PP-R pipe die |
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2016
- 2016-08-22 CN CN201620914210.6U patent/CN206201437U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106514986A (en) * | 2016-08-22 | 2017-03-22 | 广东联塑科技实业有限公司 | Double-layer combined PP-R pipe die |
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