CN110202731A - Plastic pipe molding mold and forming method - Google Patents
Plastic pipe molding mold and forming method Download PDFInfo
- Publication number
- CN110202731A CN110202731A CN201910597874.2A CN201910597874A CN110202731A CN 110202731 A CN110202731 A CN 110202731A CN 201910597874 A CN201910597874 A CN 201910597874A CN 110202731 A CN110202731 A CN 110202731A
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- Prior art keywords
- mold
- plastic pipe
- pipe molding
- modeling liquid
- section
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- 229920003023 plastic Polymers 0.000 title claims abstract description 70
- 239000004033 plastic Substances 0.000 title claims abstract description 70
- 238000000465 moulding Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000005452 bending Methods 0.000 claims abstract description 55
- 238000002386 leaching Methods 0.000 claims abstract description 53
- 239000007788 liquid Substances 0.000 claims abstract description 47
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000000926 separation method Methods 0.000 claims abstract description 6
- 238000004513 sizing Methods 0.000 claims description 7
- 238000009987 spinning Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 229920001944 Plastisol Polymers 0.000 description 8
- 239000004999 plastisol Substances 0.000 description 8
- 238000001125 extrusion Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 2
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/04—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/38—Moulds, cores or other substrates
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/42—Removing articles from moulds, cores or other substrates
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
The present invention provides a kind of plastic pipe molding mold and forming methods.The plastic pipe molding mold is integrally formed by marmem, and the mold includes bending part, and the bending part is at least one of bending section and arc section.The plastic pipe molding method includes the following steps: preheated mold；Mold is immersed in leaching modeling liquid, leaching modeling liquid is made to be attached to die surface；Mold, levelling are taken out, heating mould makes leaching modeling liquid solidifying and setting；Cooling mold；Mold stretches, by the product and mold separation after solidifying and setting.When mold separates with product i.e. demoulding, mold can be stretched deformation, stretch bending part, help smoothly to demould, after demoulding, mold can be restored to initial strip bending or circular arc state and be formed next time.Compared to tip moulding process, the present invention can be realized the single-ended closed plastic pipe that one step processing has bending part, reduces a large amount of useless processes, greatly promotes production efficiency.
Description
Technical field
The invention belongs to soaked-plastic product field, in particular to a kind of plastic pipe molding mold and forming method.
Background technique
Plastic pipe has a wide range of applications in the production and living of people, and also there are many different works for forming method
Skill, still, the technique that the single-ended closed tubing of molding can select is with regard to fewer.It is common that single-ended closed tubing is formed at present
Technique is tip moulding process, is specifically exactly that one end is carried out two with tip forming device by the tubing of forming
Secondary molding, makes its closing, and this moulding process needs multiple working procedure, low efficiency, at high cost, and the air-tightness of manufactured goods is not
It is good.In addition, tip moulding process is because of its special technique requirement, it is desirable to which molding is with bending or circular arc in this way
Tubing is just more difficult.
Extrusion molding is a kind of moulding plastics tubing commonly technique, and extrusion molding is also known as extrusion molding in plastic processing,
Refer to material by the effect between extruder barrel and screw rod, while, while being pushed forward by screw rod, being continued through head by thermoplastification
And a kind of processing method of various cross section articles or semi-products is made, there are the advantages such as serialization, high-efficient, equipment is simple.But
Its moulding process determine the tubing as made from an extrusion molding must both ends be all opening, and in some fields and row
In industry, tubing closed at one end is needed, this can not just be prepared by extrusion molding process.
Summary of the invention
The object of the present invention is to provide a kind of plastic pipe molding mold and forming methods, to solve current common molding
Process efficiency is low, at high cost, can not prepare it is single-ended closing tubing or can prepare it is single-ended closing tubing it can be difficult to demoulding
Problem.
One aspect of the present invention provides a kind of plastic pipe molding mold, the mold by marmem one at
Type, the mold include bending part, and the mold is moulded into the single-ended closed plastic pipe of type for soaking.
Further, the bending part is at least one of bending section and arc section.
Further, the mold includes multiple long and straight sections and bending section, is provided between two neighboring long and straight section described
Bending section.
Further, the mold includes multiple long and straight sections and arc section, is provided between two neighboring long and straight section described
Arc section.
Further, the mold includes multiple long and straight sections, bending section and arc section, is divided between two neighboring long and straight section
It is not provided with the bending section or arc section.
Further, the mold is solid mold or single-ended closed hollow mold.
Further, micropore is provided on the tube wall of the hollow mold, the diameter range of micropore is 0.01-1mm.
Another aspect of the present invention provides a kind of plastic pipe molding method, and use is described according to a first aspect of the present invention
Plastic pipe molding mold, includes the following steps:
Step 1, mold is preheated；
Step 2, mold is immersed in leaching modeling liquid, leaching modeling liquid is made to be attached to die surface；
Step 3, mold is taken out, keeps leaching modeling liquid uniform in die surface levelling using leaching creeping quadratic method；
Step 4, the mold that uniformly leaching modeling liquid is adhered on surface is heated, makes leaching modeling liquid that sizing be fully cured；
Step 5, cooling mold；
Step 6, die drawn is deformed, stretches the bending part of mold, by the plastic pipe and mould after solidifying and setting
Tool separation, obtains the single-ended closed plastic pipe with bending part；
Step 7, mold is restored to the shape before stretcher strain.
Further, the leaching creeping quadratic method in the step 3 are as follows: connect the helical form mold that surface is attached with leaching modeling liquid
It connects centrifuge and is set in the air-flow parallel with mold, centrifuge driving surface is attached with the mold spinning of leaching modeling liquid.
Further, the method for the product and mold separation is that compressed air is passed through into hollow mold, and air pressure is high
In atmospheric pressure 0.1-1MPa, product is blown off mold.
Beneficial effects of the present invention are as follows:
1, when in the present invention, separating i.e. demoulding when mold with product, marmem mold can be stretched deformation,
Bending part is stretched, helps smoothly to demould, after demoulding, marmem mold can be returned to original state,
That is the state with bending or circular arc, and formed next time.Compared to tip moulding process, the present invention uses shape memory
Alloy mold and impregnation, one step processing have the single-ended closed plastic pipe of bending part, reduce a large amount of useless
Process, greatly promote production efficiency.
2, tubing product of various shapes can be prepared using mold and method of the invention.
3, using product prepared by the present invention be integrally formed, in terms of be better than tip moulding process.
4, forming step of the invention simplifies, and mold is more succinct, lower than traditional extrusion molding cost.
Detailed description of the invention
In order to illustrate more clearly of technical solution of the present invention, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without any creative labor,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the embodiment one of plastic pipe molding mold provided by the invention；
Fig. 2 is the structural schematic diagram of the embodiment two of plastic pipe molding mold provided by the invention.
Fig. 3 is the structural schematic diagram of the embodiment three of plastic pipe molding mold provided by the invention.
Fig. 4 is the structural schematic diagram of the example IV of plastic pipe molding mold provided by the invention.
Fig. 5 is the structural schematic diagram after plastic pipe molding mold provided by the invention stretches.
It illustrates: 1- long and straight section；2- bending section；3- arc section.
Specific embodiment
Technical solution in embodiment in order to enable those skilled in the art to better understand the present invention, and make of the invention real
The above objects, features, and advantages for applying example can be more obvious and easy to understand, with reference to the accompanying drawing to the technology in the embodiment of the present invention
Scheme is described in further detail.
One aspect of the present invention provides a kind of plastic pipe molding mold, and referring to figs. 1 to Fig. 5, the mold is remembered by shape
Recall alloy integrated molding, the mold includes bending part, and the mold is moulded into the single-ended closed plastic pipe of type, institute for soaking
The shape for stating mold can refer to Fig. 1 to Fig. 4, and Fig. 1 to Fig. 4 is only example, not limit the shape of mold of the invention.It will be by shape
When the integrally formed die drawn of shape memory alloys deforms, the change bent portions are stretched, and thus die deformation is a long straight shape mould
Tool, the deformed straight shape mold of length is referring to Fig. 5.The mold may include multiple bending parts, and the multiple is one or one
More than a.The bending part is at least one of bending section and arc section.The mold can be according to plastic pipe shape
It needs to include multiple bending sections and arc section, to prepare plastic pipe of various shapes.
In an embodiment of plastic pipe molding mold according to the present invention, the mold includes multiple 1 Hes of long and straight section
Bending section 2 is provided with the bending section 2 between two neighboring long and straight section 1.In one embodiment, referring to Fig.1, the mold packet
Two long and straight sections, 1, bending section 2 is included, one bending section 2 is set between described two long and straight sections 1.In another implementation
In example, referring to Fig. 3, the mold includes four long and straight sections 1, three bending sections 2, is provided between two neighboring long and straight section described
Bending section 2.
In an embodiment of plastic pipe molding mold according to the present invention, the mold includes multiple 1 Hes of long and straight section
Arc section 3 is provided with the arc section 3 between two neighboring long and straight section 1.In one embodiment, referring to Fig. 2, the mold packet
Two long and straight sections, 1, arc section 3 is included, one arc section 3 is set between described two long and straight sections 1.
In an embodiment of plastic pipe molding mold according to the present invention, the mold includes multiple long and straight sections 1, folding
Curved segment 2 and arc section 3 are respectively arranged with the bending section 2 or arc section 3 between two neighboring long and straight section 1.In an embodiment
In, referring to Fig. 4, the mold includes four long and straight sections 1, two bending sections 2, an arc section 3, between two neighboring long and straight section
It is respectively arranged with the bending section 2 or the arc section 3.
In an embodiment of plastic pipe molding mold according to the present invention, the mold is solid mold.
In an embodiment of plastic pipe molding mold according to the present invention, the mold is single-ended closed hollow
Mold.In one embodiment, micropore is provided on the tube wall of the hollow mold, the diameter range of micropore is 0.01-1mm.
Another aspect of the present invention provides a kind of plastic pipe molding method, using above-mentioned plastic pipe molding mold,
Include the following steps: step 1, mold is preheated；Step 2, mold is immersed in leaching modeling liquid, leaching modeling liquid is made to be attached to mold table
Face；Step 3, mold is taken out, keeps leaching modeling liquid uniform in die surface levelling using leaching creeping quadratic method；Step 4, surface is adhered to
The uniformly mold heating of leaching modeling liquid makes leaching modeling liquid that sizing be fully cured；Step 5, cooling mold；Step 6, die drawn is become
Shape stretches the bending part of mold, the plastic pipe and mold separation after solidifying and setting demould, and obtains having bending
Partial single-ended closed plastic pipe；Step 7, mold is restored to the shape before stretcher strain.It is preheated described in the step 1
Temperature can be 120~300 DEG C, and preheating time can be 3~30min.Described in the step 2 leaching modeling liquid can for PVC leaching modeling liquid or
Person PE leaching modeling liquid.Leaching creeping quadratic method in the step 3 can are as follows: by surface be attached with leaching modeling liquid helical form mold connect from
Scheming is simultaneously set in the air-flow parallel with mold, and centrifuge driving surface is attached with the mold spinning of leaching modeling liquid.It is described from
The speed of scheming rotation can be 60rpm/min~120rpm/min.The speed of the air-flow can be 3~20m/s.The step 4
Described in heating temperature can be 150~350 DEG C, heating time be 3~30min.Step 5 type of cooling can be air-cooled or water
It is cold.
Plastic pipe molding method of the invention uses marmem mold and impregnation, one step processing plastics
Tubing, when demoulding, marmem mold can be stretched, and help smoothly to demould, after demoulding, marmem mould
Tool can be restored to initial strip bending or circular arc state, be formed next time, reduce a large amount of useless processes, mention significantly
Rise production efficiency.Product be integrally formed, in terms of be better than tip moulding process.Forming step simplifies, and mold is more
Succinctly, lower than traditional extrusion molding cost.
In one embodiment, when the mold is single-ended closed hollow mold, the tube wall of the hollow mold
On be provided with micropore, the diameter range of micropore is 0.01-1mm, and the method for the product and mold separation can be for hollow mould
In be passed through compressed air, air pressure is higher than atmospheric pressure 0.1-1MPa, and product is blown off mold.Thus further smoothly demoulding.
Concrete example illustrates plastic pipe molding mold and forming method according to the present invention below.
Embodiment one
Referring to Fig.1, plastic pipe molding mold includes two long and straight sections, 1, bending section 2, and one bending section 2 is set
It is placed between described two long and straight sections 1.
The mold is solid mold.
Included the following steps: using the plastic pipe molding method of above-mentioned mold
Step 1, mold (referring to Fig.1) is preheated into 30min at 120 DEG C；
Step 2, the mold after preheating is immersed in PVC leaching modeling liquid, PVC leaching modeling liquid is made to be attached to die surface；
Step 3, surface is attached with the mold connection centrifuge of PVC leaching modeling liquid and is set to the air-flow parallel with mold
In, centrifuge driving surface is attached with the mold spinning of leaching modeling liquid, until leaching modeling liquid is uniform in die surface levelling, wherein from
The speed of scheming rotation is 60rpm/min, and the speed of air-flow is 3m/s；
Step 4, the mold that uniform pvc plastisol is adhered on surface is heated, heating temperature is 150 DEG C, and heating time is
30min makes pvc plastisol that sizing be fully cured；
Step 5, mold is cooled to room temperature by the way of water cooling；
Step 6, die drawn is deformed, stretches bending section 2 and (stretches rear mold referring to Fig. 5), demoulding obtains single-ended envelope
The plastic pipe closed (shape of obtained plastic pipe is referring to Fig.1, i.e., identical as mold shape)；
Step 7, mold is restored to the shape (referring to Fig.1) before stretcher strain.
Embodiment two
Referring to Fig. 2, plastic pipe molding mold includes two long and straight sections, 1, arc section 3, and one arc section 3 is set
It is placed between described two long and straight sections 1.
The mold is single-ended closed hollow mold.Micropore, micropore are provided on the tube wall of the hollow mold
Diameter be 1mm.
Included the following steps: using the plastic pipe molding method of above-mentioned mold
Step 1, mold (referring to Fig. 2) is preheated into 3min at 150 DEG C；
Step 2, the mold after preheating is immersed in PE leaching modeling liquid, PE leaching modeling liquid is made to be attached to die surface；
Step 3, surface is attached with the mold connection centrifuge of PE leaching modeling liquid and is set in the air-flow parallel with mold,
Centrifuge driving surface is attached with the mold spinning of leaching modeling liquid, until leaching modeling liquid is uniform in die surface levelling, wherein being centrifuged
The speed of machine rotation is 120rpm/min, and the speed of air-flow is 20m/s；
Step 4, the mold that uniform PE plastisol is adhered on surface is heated, heating temperature is 150 DEG C, and heating time is
3min makes PE plastisol that sizing be fully cured；
Step 5, mold is cooled to room temperature by the way of air-cooled；
Step 6, die drawn is deformed, stretches arc section 3 and (stretches rear mold referring to Fig. 5), make mold in an end seal
The straight tube-like closed, is passed through compressed air into hollow mould, and air pressure is higher than atmospheric pressure 1MPa, and product is blown off mold, band is obtained
The single-ended closing plastic pipe of circular arc (shape of obtained plastic pipe is referring to Fig. 2, i.e., identical as mold shape)；
Step 7, mold is restored to the shape before stretcher strain (referring to Fig. 2).
Embodiment three
Referring to Fig. 3, plastic pipe molding mold includes four long and straight sections 1, three bending sections 2, two neighboring long and straight section it
Between be provided with the bending section 2.
The mold is single-ended closed hollow mold.Micropore, micropore are provided on the tube wall of the hollow mold
Diameter be 0.01mm.
Included the following steps: using the plastic pipe molding method of above-mentioned molding die
Step 1, mold (referring to Fig. 3) is preheated into 3min at 200 DEG C；
Step 2, the mold after preheating is immersed in PE leaching modeling liquid, PE leaching modeling liquid is made to be attached to die surface；
Step 3, surface is attached with the mold connection centrifuge of PE leaching modeling liquid and is set in the air-flow parallel with mold,
Centrifuge driving surface is attached with the mold spinning of leaching modeling liquid, until leaching modeling liquid is uniform in die surface levelling, wherein being centrifuged
The speed of machine rotation is 120rpm/min, and the speed of air-flow is 30m/s；
Step 4, the mold that uniform PE plastisol is adhered on surface is heated, heating temperature is 200 DEG C, and heating time is
3min makes PE plastisol that sizing be fully cured；
Step 5, mold is cooled to room temperature by the way of air-cooled；
Step 6, die drawn is become into open form, stretches bending section 2 and (stretches rear mold referring to Fig. 5), make mold in one end
Closed straight tube-like, is passed through compressed air into hollow mould, and air pressure is higher than atmospheric pressure 0.5MPa, and product is blown off mold, is obtained
To single-ended closing plastic pipe (shape of obtained plastic pipe is referring to Fig. 3, i.e., identical as mold shape)；
Step 7, mold is restored to the shape before stretcher strain (referring to Fig. 3).
Example IV
Referring to Fig. 4, plastic pipe molding mold includes four long and straight sections 1, two bending sections 2, and an arc section 3 is adjacent
The bending section 2 or the arc section 3 are set between two long and straight sections.
The mold is single-ended closed hollow mold.Micropore, micropore are provided on the tube wall of the hollow mold
Diameter be 0.5mm.
Included the following steps: using the tube forming method of above-mentioned mold
Step 1, above-mentioned mold (referring to Fig. 4) is preheated into 30min at 120 DEG C；
Step 2, the mold after preheating is immersed in PVC leaching modeling liquid, PVC leaching modeling liquid is made to be attached to die surface；
Step 3, surface is attached with the mold connection centrifuge of PVC leaching modeling liquid and is set to the air-flow parallel with mold
In, centrifuge driving surface is attached with the mold spinning of leaching modeling liquid, until leaching modeling liquid is uniform in die surface levelling, wherein from
The speed of scheming rotation is 60rpm/min, and the speed of air-flow is 3m/s；
Step 4, the mold that uniform pvc plastisol is adhered on surface is heated, heating temperature is 150 DEG C, and heating time is
30min makes pvc plastisol that sizing be fully cured；
Step 5, mold is cooled to room temperature by the way of water cooling；
Step 6, die drawn is deformed, stretches bending section 2, arc section 3 and (stretches rear mold referring to Fig. 5), make mold
In straight tube-like closed at one end, compressed air is passed through into hollow mould, air pressure is higher than atmospheric pressure 0.1MPa, and product is blown off mould
Tool, obtain with circular arc single-ended closing plastic pipe (shape of obtained plastic pipe referring to Fig. 4, i.e., with mold shape phase
Together)；
Step 7, mold is restored to the shape before stretcher strain (referring to Fig. 4).
A kind of plastic pipe molding mold provided by the present invention and forming method are described in detail above, herein
In apply that a specific example illustrates the principle and implementation of the invention, the explanation of above example is only intended to sides
Assistant solves method and its core concept of the invention；At the same time, for those skilled in the art, think of according to the present invention
Think, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification should not be construed as pair
Limitation of the invention.
Claims (10)
1. a kind of plastic pipe molding mold, which is characterized in that the mold is integrally formed by marmem, the mold
Including bending part, the mold is moulded into the single-ended closed plastic pipe of type for soaking.
2. plastic pipe molding mold according to claim 1, which is characterized in that the bending part is bending section and circle
At least one of segmental arc.
3. plastic pipe molding mold according to claim 2, which is characterized in that the mold includes multiple long and straight sections
(1) and bending section (2) bending section (2), are provided between two neighboring long and straight section (1).
4. plastic pipe molding mold according to claim 2, which is characterized in that the mold includes multiple long and straight sections
(1) and arc section (3) arc section (3), are provided between two neighboring long and straight section (1).
5. plastic pipe molding mold according to claim 2, which is characterized in that the mold includes multiple long and straight sections
(1), bending section (2) and arc section (3) are respectively arranged with the bending section (2) or circular arc between two neighboring long and straight section (1)
Section (3).
6. plastic pipe molding mold according to claim 1, which is characterized in that the mold is solid mold or list
Hold closed hollow mold.
7. plastic pipe molding mold according to claim 5, which is characterized in that set on the tube wall of the hollow mold
It is equipped with micropore, the diameter range of micropore is 0.01-1mm.
8. a kind of plastic pipe molding method, which is characterized in that use plastics according to any one of claims 1-7
Tubular article formation mould includes the following steps:
Step 1, mold is preheated；
Step 2, mold is immersed in leaching modeling liquid, leaching modeling liquid is made to be attached to die surface；
Step 3, mold is taken out, keeps leaching modeling liquid uniform in die surface levelling using leaching creeping quadratic method；
Step 4, the mold that uniformly leaching modeling liquid is adhered on surface is heated, makes leaching modeling liquid that sizing be fully cured；
Step 5, cooling mold；
Step 6, die drawn is deformed, stretches the bending part of mold, by the plastic pipe and mold point after solidifying and setting
From obtaining the single-ended closed plastic pipe with bending part；
Step 7, mold is restored to the shape before stretcher strain.
9. plastic pipe molding method according to claim 7, which is characterized in that the leaching creeping square in the step 3
Method are as follows: surface is attached with the helical form mold connection centrifuge of leaching modeling liquid and is set in the air-flow parallel with mold, is centrifuged
Machine driving surface is attached with the mold spinning of leaching modeling liquid.
10. plastic pipe molding method according to claim 7, which is characterized in that the side of the product and mold separation
Method is to be passed through compressed air into hollow mold, and air pressure is higher than atmospheric pressure 0.1-1MPa, and product is blown off mold.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910597874.2A CN110202731A (en) | 2019-07-04 | 2019-07-04 | Plastic pipe molding mold and forming method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910597874.2A CN110202731A (en) | 2019-07-04 | 2019-07-04 | Plastic pipe molding mold and forming method |
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| CN110202731A true CN110202731A (en) | 2019-09-06 |
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Application publication date: 20190906 |