CN110394972A - The method for making the device of biaxial-orienting PVC pipe bend and making the elbow - Google Patents
The method for making the device of biaxial-orienting PVC pipe bend and making the elbow Download PDFInfo
- Publication number
- CN110394972A CN110394972A CN201910723347.1A CN201910723347A CN110394972A CN 110394972 A CN110394972 A CN 110394972A CN 201910723347 A CN201910723347 A CN 201910723347A CN 110394972 A CN110394972 A CN 110394972A
- Authority
- CN
- China
- Prior art keywords
- pipe
- mold
- die body
- biaxial
- layer die
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/02—Bending or folding
- B29C53/08—Bending or folding of tubes or other profiled members
- B29C53/083—Bending or folding of tubes or other profiled members bending longitudinally, i.e. modifying the curvature of the tube axis
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
- B29C53/82—Cores or mandrels
-
- 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
- B29L2031/24—Pipe joints or couplings
- B29L2031/243—Elbows
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention discloses a kind of device for producing biaxial-orienting PVC pipe bend and the method for making the elbow, the device includes the external member being made of the first base enlargement of pipe mold, the second base enlargement of pipe mold, elbow forming die, mold tail portion corking and die head corking；First base enlargement of pipe mold and the second base enlargement of pipe mold are attached to one end of the elbow forming die, for biaxial orientation pvc pipe to be made in base pipe；Elbow forming die is used to manufactured biaxial-orienting PVC pipe being converted into biaxial-orienting PVC bend pipe；Mold tail portion corking and die head corking are used to limit each component of elbow forming die, prevent its movement；In the present invention, it is connected together due to base enlargement of pipe mold and elbow forming die, so that entire production process is carried out continuously, the base pipe of elastomeric state is after the biaxial tension of base enlargement of pipe mold, brake forming in elbow forming die can be immediately entered, centre is without pause, therefore the efficiency produced is higher.
Description
Technical field
The present invention relates to plastic pipe manufacture field more particularly to the processing and fabricatings of biaxial-orienting PVC pipe bend.
Background technique
Biaxial-orienting PVC pipe (also referred to as PVC-O pipe) is the newest evolutional form of pvc pipe, is processed by special orientation
The tubing of technique manufacture.The advantage of biaxial-orienting PVC pipe is to change the molecule row of material by the biaxial tension to material
Array structure will carry out axial tension and radial drawing using the PVC-U tubing of extrusion method production, make the PVC long in tubing
Chain molecule regular arrangement on two draw directions, so that it be made to obtain high-intensitive, impact and excellent fatigue resistance.
Although the processing technology of PVC-O bend pipe is very currently, the processing technology of PVC-O straight tube comparative maturity
Complexity, and the reliability processed is poor, rejection rate is higher, this leads to making for PVC-O pipe bend (i.e. biaxial-orienting PVC pipe bend)
It is relatively low with popularity rate.Therefore in current PVC-O pipe in the network of rivers, turning point generallys use steel plastic compount elbow and is connected
Connect, however there are certain shortcomings for steel plastic compount elbow, such as price costly, service life do not grow (typically not greater than 20
Year) etc..
The main reason for processing technology of PVC-O bend pipe is complicated is: when being bent to PVC-O straight tube, needing elder generation
PVC-O straight tube is heated to heated plastic state, then it could be bent, and PVC-O straight tube is inherently by PVC-U straight tube
(i.e. base pipe) is got after ventilating and being radially expanded and be axially stretched after being heated to heated plastic state, therefore when bending again
When by the heating of PVC-O straight tube, tubing easily occurs disorientation and bounces back, especially when the temperature of heating is closer to thermoplastic shape
When temperature needed for state (90 DEG C or so), disorientation bounce back the phenomenon that it is more serious.Therefore, this just leads to current PVC-O bend pipe
Processing technology is extremely complex, and quality is difficult to control in process, causes rejection rate higher, it is difficult to be widely spread use.
And since PVC-O tubing itself has brilliant performance, such as high-intensitive, impact and excellent fatigue resistance,
Therefore in PVC-O water supply network management, bend connection is not carried out using PVC-O pipe bend, but is carried out with steel plastic compount elbow
Substitution, it is real to belong to caving-in bash.
Therefore, inventor feels the need to design a set of machining tool, so that the manufacture craft of biaxial-orienting PVC pipe bend
It can be simplified, manufacture craft is also more reliable, and the twin shaft that this set machining tool can also produce more than one specification takes
To pvc pipe elbow.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of device for producing biaxial-orienting PVC pipe bend and utilize it
The method for making pvc pipe elbow, so that the manufacture craft of biaxial-orienting PVC pipe bend can be simplified and technique also more may be used
It leans on, while the device can produce the biaxial-orienting PVC pipe bend of two kinds of specifications there are also the function of two kinds of a tool.
The technical solution adopted by the present invention to solve the technical problems is: it is curved to provide a kind of production biaxial-orienting PVC pipe
The device of head comprising by the first base enlargement of pipe mold, the second base enlargement of pipe mold, elbow forming die, mold tail portion corking
And the external member of die head corking composition；
The first base enlargement of pipe mold is used to be connected to one end of the elbow forming die comprising is successively linked as
The first guide section, the first seal section, the first expansion segment and the first sizing section of one；First guide section is cylinder
Body, for importing base pipe to be expanded；First seal section is also cylindrical body and outer diameter is outer slightly larger than the first guide section
Diameter, the first seal section are connected smoothly with the first guide section by the conical surface；First expansion segment is cone, small-bore
End is connect with the first seal section, and large diameter end is connect with the first sizing section；First sizing section is cylindrical body, and first is fixed
The outer diameter of diameter section is greater than the outer diameter of the first seal section；
The second base enlargement of pipe mold is also used for being connected to one end of the elbow forming die comprising successively connects
The second guide section, the second seal section, the second expansion segment and the second sizing section being integrated；Second guide section with it is described
The structure of first guide section is consistent, is also used for importing base pipe to be expanded；Second seal section and first seal section
Structure it is consistent, the second seal section is connected smoothly with the second guide section also by the conical surface；Second expansion segment is cone
Body, small-caliber end are connect with the second seal section, and large diameter end is connect with the second sizing section；Second sizing section is cylinder
Body, and the outer diameter of the second sizing section is greater than the outer diameter of the second seal section, while also greater than the outer diameter of the first sizing section；
The elbow forming die includes internal layer die body, middle layer die body and outer layer die body；The internal layer die body
It for hollow elbow-shaped structure, is composed of the first half module and the second half module that can be separated from each other, and internal layer die body is outer
Diameter is consistent with the outer diameter of first sizing section；The middle layer die body is also hollow elbow-shaped structure, by can be mutual
Isolated third half module and the 4th half module is composed, and the internal diameter of middle layer die body is greater than the outer diameter of the internal layer die body, outside
Diameter is consistent with the outer diameter of second sizing section；The outer layer die body is also hollow elbow-shaped structure, by can mutually divide
From the 5th half module and the 6th half module be composed, and the internal diameter of outer layer die body be greater than the middle layer die body outer diameter；
The mold tail portion corking for cover be located at elbow forming die not with the first base enlargement of pipe mold or the second base
One end of enlargement of pipe mold connection comprising bottom plate, the first stage body, the second stage body and the third stage body being linked together；It is described
Bottom plate be disc；The First body is located at the side of the bottom plate, and the first stage body is set away from the centre of bottom plate side
There is the first groove, for the surrounding of the first groove with first annular protrusion circle, first annular protrusion circle can interference-fit type insertion institute
State the gap between outer layer die body and the middle layer die body；Second stage body is set in first groove, the
Two stage bodies are equipped with the second groove away from the centre of the first stage body side, and the surrounding of the second groove has the second convex annular looping, the
Second ring protrusion circle can interference-fit type be inserted into the gap between the middle layer die body and the internal layer die body；The third
Stage body is set in second groove, and third stage body is cylindrical structure and can the interference-fit type insertion internal layer die body
Inner cavity in；
The die head corking is located at one end that elbow forming die is connect with the first base enlargement of pipe mold for covering,
It includes the hollow disk and hollow ring being linked together；The diameter of the circular hole of the hollow middle of the disc is in described
Between the internal diameter and outer diameter of interbed die body；The hollow ring is connected to the side of hollow circular plate and coaxial with hollow circular plate
Line, hollow ring can interference-fit type be inserted into the gap between the outer layer die body and the middle layer die body.
Further, first half module is provided with the first locating slot, and the second half module is provided with the first positioning column, and first
Half module and the second half module are realized by the cooperation of the first locating slot and the first positioning column to be positioned；The third half module is provided with
Two locating slots, the 4th half module are provided with the second positioning column, third half module and the 4th half module and pass through the second locating slot and the second positioning
Positioning is realized in the cooperation of column；5th half module is provided with the first otic placode, and the 6th half module is provided with the second otic placode, the
Five half modules and the 6th half module realize the fixation of the two by the connection of the first otic placode and the second otic placode.
Further, the mold tail portion corking be provided at least two first stomatas, at least two second stomatas with
An and third stomata；First stomata runs through the first stage body and bottom plate by first annular raised circle；Described second
Stomata runs through the second stage body, the first stage body and bottom plate by the second convex annular looping；The third stomata runs through the simultaneously
Three stage bodies, the second stage body, the first stage body and bottom plate.
Further, the die head corking is provided at least two the 4th stomatas；4th stomata is simultaneously
Through the hollow disk and the hollow ring.
Further, the first base enlargement of pipe mold, which is provided with, axially penetrates through in first through hole therein；Described
Second base enlargement of pipe mold, which is provided with, to be axially penetrated through in the second through-hole therein.
Further, the first base enlargement of pipe mold further includes the first screwed ring, which is connected to first
The one end of sizing section far from the first expansion segment, the outer wall of the first screwed ring are provided with external screw thread；The internal layer die body and first
One end of base enlargement of pipe mold connection is provided with internal screw thread；The interior spiral shell of the external screw thread of first screwed ring and the first base enlargement of pipe mold
Line can be threadedly engaged realization connection；
The second base enlargement of pipe mold further includes the second screwed ring, and it is remote which is connected to the second sizing section
The outer wall of one end from the second expansion segment, the second screwed ring is provided with external screw thread；The middle layer die body and the second base pipe expand
The one end for opening mold connection is provided with internal screw thread；The internal screw thread of the external screw thread of second screwed ring and the second base enlargement of pipe mold can spiral shell
Connection is realized in line cooperation.
In addition, the present invention also provides a kind of method using above-mentioned apparatus production pvc pipe elbow, this method can make two
Kind pvc pipe elbow of different sizes；
This method comprises the following steps:
S1, assembling elbow forming die: it is placed on middle layer die body except internal layer die body, outer layer die body is made to be placed on internal layer mould
Except body；
Wherein, it is fixed that cooperation when the first half module is docked with the second half module by the first locating slot and the first positioning column is realized
Positioning, the 5th half module are realized by the cooperation of the second locating slot and the second positioning column when position, third half module and the 4th half module dock
With the fixation for realizing the two when the docking of the 6th half module by the connection of the first otic placode and the second otic placode；
S2, mold tail portion corking is filled in elbow forming die not with the first base enlargement of pipe mold or the second base enlargement of pipe mould
Has one end of connection；
Wherein, when mold tail portion corking is filled in, first annular protrusion circle interference-fit type insertion outer layer die body and middle layer
Gap between die body, the second convex annular looping interference-fit type are inserted into the gap between middle layer die body and internal layer die body；
Later, if production internal diameter is equal to internal layer die body outer diameter, outer diameter is equal to the pvc pipe elbow of middle layer die body internal diameter,
It carries out as follows:
S311, the first base enlargement of pipe mold is made to be connected to the one end of elbow forming die far from mold tail portion corking, meanwhile,
Die head corking is filled in into one end that elbow forming die is connected with the first base enlargement of pipe mold；
Wherein, when connecting the first base enlargement of pipe mold, the external screw thread of the first screwed ring and the internal screw thread of internal layer die body are utilized
Connection is realized in cooperation；When filling in die head corking, hollow ring interference-fit type be inserted into outer layer die body and middle layer die body it
Between gap；
S312, embryonic tube is heated to elastomeric state, base pipe is then made to import the first base enlargement of pipe mold by the first guide section, and
So that base pipe is first passed through the first seal section under the action of tractive force, then successively pass through the first expansion segment and the first sizing section again,
It is set to expand into biaxial-orienting PVC pipe；
S313, later, under the action of tractive force, in the biaxial-orienting PVC pipe after making expansion continues to move forward and enter
Gap between layer die body and middle layer die body forms biaxial-orienting PVC bend pipe after being bent it；
S314, after biaxial-orienting PVC pipe roll forming, be allowed to cool sizing；
After S315, sizing, dismantle elbow forming die, at the same remove the first base enlargement of pipe mold, mold tail portion corking with
And die head corking；Then biaxial-orienting PVC bend pipe is taken out, biaxial orientation will be made after the excision of its both ends redundance
Pvc pipe elbow；
If production internal diameter is equal to middle layer die body outer diameter, outer diameter is equal to the pvc pipe elbow of outer layer die body internal diameter, by as follows
Step carries out:
S321, the second base enlargement of pipe mold is made to be connected to the one end of elbow forming die far from mold tail portion corking；Wherein,
When second base enlargement of pipe mold connects, realizes and connect using the external screw thread of the second screwed ring and the screw-internal thread fit of middle layer die body
It connects；
S322, embryonic tube is heated to elastomeric state, base pipe is then made to import the second base enlargement of pipe mold by the second guide section, and
So that base pipe is first passed through the second seal section under the action of tractive force, then successively pass through the second expansion segment and the second sizing section again,
It is set to expand into biaxial-orienting PVC pipe；
S323, later, under the action of tractive force, during the biaxial-orienting PVC pipe after making expansion continues to move forward and enter
Gap between interbed die body and outer layer die body forms biaxial-orienting PVC bend pipe after being bent it；
S324, after biaxial-orienting PVC pipe roll forming, be allowed to cool sizing；
After S325, sizing, elbow forming die is dismantled, while removing the second base enlargement of pipe mold and mold tail portion corking；
Then biaxial-orienting PVC bend pipe is taken out, biaxial-orienting PVC pipe bend will be made after the excision of its both ends redundance.
Further, when carrying out step S313, temperature is passed through into elbow forming die from the first stomata and third stomata
Degree is higher than 90 DEG C of hot gas, while being evacuated outward by the second stomata；
When carrying out step S323, the hot gas that temperature is higher than 90 DEG C is passed through into elbow forming die from the second stomata, together
When be evacuated outward by the first stomata.
Further, when carrying out step S313 or step S323, elbow forming die is in incubator.
In the present invention: (1) when needing to make the pvc pipe elbow of small dimension, first being combined by the step of above-mentioned S1 and S2
After good elbow forming die and mold tail portion corking plug, then the step of pressing above-mentioned S311 is by the first base enlargement of pipe mold and mould head
Portion's corking is combined with elbow forming die, is operated later by S312 to the step of S315, in operation, elastomeric state
Embryonic tube, on the first seal section, then under the action of tractive force, is expanded by the guidance rear enclosure of the first guide section by first
Radial and axial stretching (predominantly radial) is done step-by-step in section, is entered back into later to the first sizing section, keeps the transformation of base pipe in pairs
Axis is orientated pvc pipe, and subsequent tractive force will continue to that tubing is promoted to move forward, can be along internal layer die body after entering elbow forming die
Gap between middle layer die body continues to move forward, since tubing is still within elastomeric state, thus in the process of moving can be with
Gap turn to and bend, and then obtain biaxial-orienting PVC bend pipe, make bend pipe cooling and shaping later, then demoulding is taken out
Biaxial-orienting PVC pipe bend is made in its cutting processing by bend pipe.(2) same first when needing to make the pvc pipe elbow of big specification
After combining elbow forming die and mold tail portion corking plug by the step of above-mentioned S1 and S2, and then by the step of above-mentioned S321
Suddenly it combines the second base enlargement of pipe mold with elbow forming die, is then operated, operated by S322 to the step of S325
In the process, the embryonic tube of elastomeric state by the guidance rear enclosure of the second guide section on the second seal section, then in the effect of tractive force
Under, radial and axial stretching (predominantly radial) is done step-by-step by the second expansion segment, is entered back into later to the second sizing section,
Base pipe is set to be transformed into biaxial-orienting PVC pipe, subsequent tractive force will continue to that tubing is promoted to move forward, after entering elbow forming die,
It can continue to move forward along the gap between middle layer die body and outer layer die body, since tubing is still within elastomeric state, thus moving
It can bend as gap turns in dynamic process, and then obtain biaxial-orienting PVC bend pipe, make bend pipe cooling fixed later
Type, then demoulding takes out bend pipe and biaxial-orienting PVC pipe bend is made in its cutting processing.
Beneficial effects of the present invention are as follows:
A) due to passing through above-mentioned (1) or (2), the diameter of biaxial-orienting PVC pipe bend made from institute's energy is different, because
This device of the invention has the function of two kinds of a tool, has good practicability and economy, that is, set of device can be used to produce
The biaxial-orienting PVC pipe bend of two kinds of different sizes assemble accordingly to device when production according to dimensions, non-
Normal is practical, and two kinds of a tool also saves the production cost spending of enterprise；
B) it is connected together due to base enlargement of pipe mold and elbow forming die, so that entire production process is
It is carried out continuously, the base pipe of elastomeric state can immediately enter elbow forming die after the biaxial tension of base enlargement of pipe mold
Middle brake forming；That is, by the process that PVC-U base pipe is transformed into PVC-O bend pipe be it is coherent, it is intermediate without pause, therefore produce
Efficiency is higher, and the process produced is also fairly simple reliable.
Detailed description of the invention
Fig. 1 is the schematic diagram that each component of device of biaxial-orienting PVC pipe bend is made in embodiment 1；
Fig. 2 is the A-A direction view of Fig. 1；
Fig. 3 is the schematic diagram after Fig. 2 is separated；
Fig. 4 is the three-dimensional structure diagram of mold tail portion corking in Fig. 1；
Fig. 5 is the three-dimensional structure diagram of die head corking in Fig. 1；
Fig. 6 is the schematic diagram after assembling the device of embodiment 1 when making pvc pipe elbow as described in Example 2；
Fig. 7 illustrates the biaxial-orienting PVC pipe bend as made from the method for embodiment 2；
Fig. 8 is the schematic diagram after assembling the device of embodiment 1 when making pvc pipe elbow as described in Example 3；
Fig. 9 illustrates the biaxial-orienting PVC pipe bend as made from the method for embodiment 3.
Specific embodiment
The present invention is described in further detail combined with specific embodiments below, but embodiments of the present invention are not limited to
This.
Embodiment 1:
As shown in Figure 1, present embodiments providing a kind of device for making biaxial-orienting PVC pipe bend comprising by first
Base enlargement of pipe mold 1, the second base enlargement of pipe mold 2, elbow forming die 3, mold tail portion corking 4 and die head corking 5
The external member of composition.
The first base enlargement of pipe mold 1 is used to be connected to one end (reference can be made to Fig. 6) of the elbow forming die 3,
It includes the first guide section 11 being successively linked together, the first seal section 12, the first expansion segment 13 and the first sizing section 14；Institute
The first guide section 11 stated is cylindrical body, for importing base pipe to be expanded；First seal section 12 also for cylindrical body and
Outer diameter is slightly larger than the outer diameter of the first guide section 11, and the first seal section 12 is connected smoothly with the first guide section 11 by the conical surface；
First expansion segment 13 is cone, and the diameter of small-caliber end is equal with the diameter of the first seal section 12 and seals with first
Section 12 connects, and the diameter of large diameter end is equal with the diameter of the first sizing section 14 and connect with the first sizing section 14；Described
First sizing section 14 is cylindrical body, and the outer diameter of the first sizing section 14 is greater than the outer diameter of the first seal section 12.
The second base enlargement of pipe mold 2 is also used for being connected to one end of the elbow forming die 3 (reference can be made to figure
8) comprising the second guide section 21, the second seal section 22, the second expansion segment 23 and the second sizing section being successively linked together
24；Second guide section 21 is consistent with the structure of first guide section 11, is also used for importing base pipe to be expanded；It is described
The second seal section 22 it is consistent with the structure of first seal section 12, the second seal section 22 and the second guide section 21 are also by cone
Face is connected smoothly；Second expansion segment 23 is cone, the diameter of the diameter of small-caliber end and the second seal section 22
It is equal and connect with the second seal section 22, the diameter of large diameter end it is equal with the diameter of the second sizing section 24 and with the second sizing
Section 24 connects；Second sizing section 24 is cylindrical body, and the outer diameter of the second sizing section 24 is greater than the outer of the second seal section 22
Diameter, while also greater than the outer diameter of the first sizing section 14.
The elbow forming die 3 includes internal layer die body 31, middle layer die body 32 and outer layer die body 33；Described is interior
Layer die body 31 is hollow elbow-shaped structure, is composed of the first half module 311 and the second half module 312 that can be separated from each other
(referring to figs. 2 and 3), and the outer diameter of internal layer die body 31 is consistent with the outer diameter of first sizing section 14 (reference can be made to Fig. 6)；It is described
Middle layer die body 32 also be hollow elbow-shaped structure, by 322 groups of the third half module 321 and the 4th half module that can be separated from each other
Close form (referring to figs. 2 and 3), and the internal diameter of middle layer die body 32 be greater than the internal layer die body 31 outer diameter, outer diameter with it is described
The outer diameter of second sizing section 24 is consistent (reference can be made to Fig. 8)；The outer layer die body 33 is also hollow elbow-shaped structure, by can
The 5th half module 331 being separated from each other and the 6th half module 332 are composed (referring to figs. 2 and 3), and the internal diameter of outer layer die body 33 is big
In the outer diameter of the middle layer die body 32.
The mold tail portion corking 4 for cover be located at elbow forming die 3 not with the first base enlargement of pipe mold 1 or the second
One end (reference can be made to Fig. 6 or Fig. 8) that base enlargement of pipe mold 2 connects comprising the bottom plate 41 that is linked together, the first stage body 42, the
Two stage bodies 43 and third stage body 44 (referring to Fig. 1 and Fig. 4)；The bottom plate 41 is disc；First stage body 42
In the side of the bottom plate 41, the first stage body 42 is equipped with the first groove 421, the first groove 421 away from the centre of 41 side of bottom plate
Surrounding there is first annular protrusion circle 422, first annular protrusion circle 422 can interference-fit type be inserted into 33 He of outer layer die body
Gap between the middle layer die body 32；Second stage body 43 is set in first groove 421, the second stage body
43 are equipped with the second groove 431 away from the centre of 42 side of the first stage body, and the surrounding of the second groove 431 has the second convex annular looping
432, the second convex annular looping 432 can be between interference-fit type be inserted between the middle layer die body 32 and the internal layer die body 31
Gap；The third stage body 44 is set in second groove 431, third stage body 44 be cylindrical structure and can interference match
In the inner cavity of the box-like insertion internal layer die body 31.
The die head corking 5 is located at elbow forming die 3 is connect with the first base enlargement of pipe mold 1 one for covering
It holds (reference can be made to Fig. 6) comprising the hollow disk 51 and hollow ring 52 being linked together (referring to Fig. 1 and Fig. 5)；The open circles
The diameter of circular hole among disk 51 is slightly less than the outer diameter of middle layer die body 32；The hollow ring 52 is connected to hollow circular plate 51
Side and with 51 coaxial line of hollow circular plate, the diameter of the circular hole among the internal diameter of hollow ring 52 and hollow disk 51 is consistent
(that is, the outer diameter for being also slightly less than middle layer die body 32), the outer diameter of hollow ring 52 is slightly larger than the internal diameter of outer layer die body 33, so that empty
Heart annulus 52 can be inserted into the gap (reference can be made to Fig. 6) between outer layer die body 33 and middle layer die body 32 with interference-fit type.
It is preferred about the elbow forming die 3:
Referring to Fig. 3, first half module 311 is provided with the first locating slot 311a, and it is fixed that the second half module 312 is provided with first
Position column 312a, the first half module 311 and the second half module 312 are realized by the cooperation of the first locating slot 311a and the first positioning column 312a
Positioning；The third half module 321 is provided with the second locating slot 321a, and the 4th half module 322 is provided with the second positioning column 322a, the
Three half modules 321 and the 4th half module 322 are realized by the cooperation of the second locating slot 321a and the second positioning column 322a to be positioned；Described
5th half module 331 is provided with the first otic placode 331a, and the 6th half module 332 is provided with the second otic placode 332a, the 5th half module 331
The fixation of the two is realized by the connection of the first otic placode 331a and the second otic placode 332a with the 6th half module 332, wherein the first otic placode
331a is to be realized by being penetrated after bolt in the hole of corresponding otic placode with nut check with the connection of the second otic placode 332a.
When assembling internal layer die body 31, by the first positioning of the first locating slot 311a of the first half module 311 and the second half module 312
Two half modules are closed after column 312a alignment, without locking；When assembling middle layer die body 32, by the second of third half module 321
Locating slot 321a closes two half modules after being aligned with the second positioning column 322a of the 4th half module 322, without locking；Assembling
It is then different when outer layer die body 33, after the 5th half module 331 and the 6th half module 332 are closed, also need corresponding the with bolt, nut
One otic placode 331a is connect with the second otic placode 332a；It certainly, can also to facilitate the positioning of the 5th half module 331 and the 6th half module 332
Positioning column and locating slot similar to the above is arranged on the 5th half module 331 and the 6th half module 332.
In above-mentioned design, the reason of two half modules of internal layer die body 31 and middle layer die body 32 do not lock, is: assuming that if
Two half modules are locked, lock solid structure will be necessarily related to, as being arranged as outer layer die body 33 on half module outer wall
Otic placode, and since the outer wall of internal layer die body 31 and middle layer die body 32 will be used to form bend pipe, so in order to ensure outer wall
It is smooth, lock solid structure just cannot be set.
Correspondingly, not locking just because of two half modules of internal layer die body 31 and middle layer die body 32, so this hair
It is bright just to devise mold tail portion corking 4 and die head corking 5, it is specific: due to outer layer die body to limit the outer shifting of each half module
33 two half modules 331,332 are that locking is motionless, so working as 422,432 points of two convex annular loopings of mold tail portion corking 4
Other interference-fit type is inserted into behind the gap between corresponding die body (referring to Fig. 6), and convex annular looping 422,432 can play limitation
The effect that one half module 311, the second half module 312 separate and limitation third half module 321, the 4th half module 322 are isolated；Die head plug
Lid 5 similarly, after hollow ring 52 is inserted into the gap between middle layer die body 32 and outer layer die body 33, just can limit third half module
321, the 4th half module 322 separates.
In addition, the first base enlargement of pipe mold 1 further includes the first screwed ring 15, which is connected to first
The one end of sizing section 14 far from the first expansion segment 13, the outer wall of the first screwed ring 15 are provided with external screw thread；The internal layer die body
31 one end connecting with the first base enlargement of pipe mold 1 are provided with internal screw thread, and the external screw thread of the first screwed ring 15 and the first base pipe expand
The internal screw thread for opening mold 1 can be threadedly engaged realization connection；Meanwhile close to above-mentioned interior spiral shell on 1 inner wall of the first base enlargement of pipe mold
Interior otic placode 313 (referring to Fig. 1, Fig. 2 and Fig. 6) can be also designed at the position of line, which is distributed in the first half module simultaneously
311 and second on half module 312, equally just can be real by the connection of interior otic placode 313 on two half modules 311,312 with bolt, nut
Now lock.
Similarly, the second base enlargement of pipe mold 2 further includes the second screwed ring 25, which is connected to
The one end of two sizing sections 24 far from the second expansion segment 23, the outer wall of the second screwed ring 25 are provided with external screw thread；The middle layer
One end that die body 32 is connect with the second base enlargement of pipe mold 2 is provided with internal screw thread；The external screw thread and the second base of second screwed ring 25
The internal screw thread of enlargement of pipe mold 2 can be threadedly engaged realization connection；Meanwhile in the second sizing section of outer layer 24 of the second screwed ring 25
Also settable circle bulge loop 27 on end face, then one ring annular groove, 323 (annular groove is set in the corresponding end-faces of middle layer die body 32
323 after 322 split of third half module 321 and the 4th half module by forming), the lucky energy phase in the same size of annular groove 323 and bulge loop 27
Mutually cooperation (referring to Fig. 1), so that bulge loop 27 can be caught in ring when the second base enlargement of pipe mold 2 is tightened on middle layer die body 32
Shape slot 314, to achieve the purpose that limit third half module 321, the separation of the 4th half module 322.
Due to ensure that it is continuously in elastomeric state during bending pipes, it is therefore necessary to guarantee elbow forming die
Tool 3 is continuously in the condition of high temperature, so that heat can pass to tubing and it is made persistently to keep elastomeric state；It is carried out based on this present invention
Following design:
Referring to Fig. 1 and Fig. 4, at least two first stomatas 45, at least two are provided in the mold tail portion corking 4
Second stomata 46 and a third stomata 47；First stomata 45 runs through First by first annular protrusion circle 422
Body 42 and bottom plate 41；Second stomata 46 by the second convex annular looping 432 through the second stage body 43, the first stage body 42 with
And bottom plate 41；The third stomata 47 runs through third stage body 44, the second stage body 43, the first stage body 42 and bottom plate 41 simultaneously.
When carrying out bending pipes, it can be passed through high temperature hot gas from above-mentioned corresponding stomata to elbow forming die 3, to rise
To the effect heating elbow forming die 3 or keeping the temperature, and then achieve the purpose that tubing is made to continue to keep elastomeric state.
Certainly, based on the above technical solution, it is also necessary to which the hot gas for ensuring to enter in elbow forming die 3 has stream
Dynamic property is avoided there is a situation where air-flow siltation, and the present invention has also carried out following design: referring to Fig. 1 and Fig. 5, in the mold
At least two the 4th stomatas 53 are provided in head corking 5, and the 4th stomata 53 runs through hollow disk 51 and hollow ring simultaneously
52；Meanwhile it being additionally provided with and being axially penetrated through in first through hole 16 therein, described on the first base enlargement of pipe mold 1
The second base enlargement of pipe mold 2 on be additionally provided with and axially penetrate through in the second through-hole 26 therein.
4th stomata 53, first through hole 16 and the second through-hole 26 can play the mesh of hot gas in discharge elbow forming die 3
, to ensure that hot gas is flowing, avoid siltation the case where cooling can not but be discharged elbow forming die 3 gradually.
It should be noted that: in general, the gap size between middle layer die body 32 and internal layer die body 31 is between 2mm-10mm,
Gap size between outer layer die body 33 and middle layer die body 32 is also between 2mm-10mm；First base enlargement of pipe mold, 1 He
Second base enlargement of pipe mold 2 is made of metal material, and elbow forming die 3 is cast member, is also made of metal material, mold tail
Portion's corking 4 and die head corking 5 are made of rubber resistant to high temperature.
Following two embodiment provides the method for the device production pvc pipe elbow using embodiment 1, is that production is small respectively
The method (embodiment 1) of size pvc pipe elbow and the method (embodiment 2) for making large scale pvc pipe elbow, specific as follows:
Embodiment 2:
The method of the present embodiment includes the following steps:
S1, assembling elbow forming die 3: it is placed on middle layer die body 32 except internal layer die body 31, makes 33 sets of outer layer die body
Except internal layer die body 32；
Wherein, by the first locating slot 311a and the first positioning column 312a when the first half module 311 is docked with the second half module 312
Cooperation realize positioning, it is not necessary that the first half module 311 and the second half module 312 lock after positioning docking；Third half module 321 and the 4th
Positioning is realized in cooperation when half module 322 docks by the second locating slot 321a and the second positioning column 322a, is not necessarily to after positioning docking
Third half module 321 and the 4th half module 322 are locked；5th half module 331 and the 6th half module 332 pass through the first otic placode 331a when docking
The locking of the two is realized with the connection of the second otic placode 332a；
S2, mold tail portion corking 4 is filled in elbow forming die 3 do not expand with the first base enlargement of pipe mold 1 or the second base pipe
Open one end that mold 2 connects；
Wherein, when mold tail portion corking 4 is filled in, 422 interference-fit types of first annular protrusion circle are inserted into 33 He of outer layer die body
Gap between middle layer die body 32,432 interference-fit type of the second convex annular looping are inserted into middle layer die body 32 and internal layer die body
Gap between 31；
Later, referring to Fig. 6, continue as follows:
S311, the first base enlargement of pipe mold 1 is made to be connected to the one end of elbow forming die 3 far from mold tail portion corking 4, together
When, die head corking 5 is filled in into one end that elbow forming die 3 is connected with the first base enlargement of pipe mold 1；
Wherein, when connecting the first base enlargement of pipe mold 1, interior otic placode 313 can be first passed through by the first half module 311 and the second half
Mould 312 locks, and is then realized and is connected using the screw-internal thread fit of the external screw thread of the first screwed ring 15 and internal layer die body 31；Fill in mould
When having head corking 5,52 interference-fit type of hollow ring is inserted into the gap between outer layer die body 33 and middle layer die body 32；
S312, embryonic tube is heated to elastomeric state, base pipe is then made to import the first base enlargement of pipe mold by the first guide section 11
1, and so that base pipe is first passed through the first seal section 12 under the action of tractive force, then successively pass through the first expansion segment 13 and first again
Sizing section 14 makes it expand into biaxial-orienting PVC pipe；
S313, later, under the action of tractive force, in the biaxial-orienting PVC pipe after making expansion continues to move forward and enter
Gap between layer die body 31 and middle layer die body 32 forms biaxial-orienting PVC bend pipe after being bent it；
S314, after biaxial-orienting PVC pipe roll forming, be allowed to cool sizing；
After S315, sizing, elbow forming die 3 is dismantled, while removing the first base enlargement of pipe mold 1, mold tail portion corking 4
And die head corking 5；Then biaxial-orienting PVC bend pipe is taken out, it is double by that can be made after the excision of its both ends redundance
Axis is orientated pvc pipe elbow, as shown in Figure 7.
When carrying out step S313, temperature can be passed through into elbow forming die 3 from the first stomata 45 and third stomata 47
Degree is higher than 90 DEG C of hot gas, while by the second pumping outward of stomata 46.Wherein, entered by the first stomata 45 and third stomata 47 curved
The hot gas of head molding die 3 can play the role of heating or keeping the temperature from tubing two sides to elbow forming die 3, and then reach and make pipe
Material persistently keeps the purpose of elastomeric state；It is by the purpose that the second stomata 46 is evacuated outward: makes internal layer die body 31 and middle layer mould
Negative pressure is formed between body 32, which can generate " suction ", promote tubing Forward.
Embodiment 3:
The method of the present embodiment includes the following steps:
S1, assembling elbow forming die 3: it is placed on middle layer die body 32 except internal layer die body 31, makes 33 sets of outer layer die body
Except internal layer die body 32；
Wherein, by the first locating slot 311a and the first positioning column 312a when the first half module 311 is docked with the second half module 312
Cooperation realize positioning, it is not necessary that the first half module 311 and the second half module 312 lock after positioning docking；Third half module 321 and the 4th
Positioning is realized in cooperation when half module 322 docks by the second locating slot 321a and the second positioning column 322a, is not necessarily to after positioning docking
Third half module 321 and the 4th half module 322 are locked；5th half module 331 and the 6th half module 332 pass through the first otic placode 331a when docking
The locking of the two is realized with the connection of the second otic placode 332a；
S2, mold tail portion corking 4 is filled in elbow forming die 3 do not expand with the first base enlargement of pipe mold 1 or the second base pipe
Open one end that mold 2 connects；
Wherein, when mold tail portion corking 4 is filled in, 422 interference-fit types of first annular protrusion circle are inserted into 33 He of outer layer die body
Gap between middle layer die body 32,432 interference-fit type of the second convex annular looping are inserted into middle layer die body 32 and internal layer die body
Gap between 31；
Later, referring to Fig. 8, continue as follows:
S321, the second base enlargement of pipe mold 2 is made to be connected to the one end of elbow forming die 3 far from mold tail portion corking 4；Its
In, when the second base enlargement of pipe mold 2 connects, utilize the external screw thread of the second screwed ring 25 and the screw-internal thread fit of middle layer die body 32
Realize connection, the bulge loop 27 after connection on 24 end face of the second sizing section can be caught in the annular groove 323 on 32 end face of middle layer die body
It is interior, to limit third half module 321, the separation of the 4th half module 322；
S322, embryonic tube is heated to elastomeric state, base pipe is then made to import the second base enlargement of pipe mold by the second guide section 21
2, and so that base pipe is first passed through the second seal section 22 under the action of tractive force, then successively pass through the second expansion segment 23 and second again
Sizing section 24 makes it expand into biaxial-orienting PVC pipe；
S323, later, under the action of tractive force, during the biaxial-orienting PVC pipe after making expansion continues to move forward and enter
Gap between interbed die body 32 and outer layer die body 33 forms biaxial-orienting PVC bend pipe after being bent it；
S324, after biaxial-orienting PVC pipe roll forming, be allowed to cool sizing；
After S325, sizing, elbow forming die 3 is dismantled, while removing the second base enlargement of pipe mold 2 and mold tail portion corking
4；Then biaxial-orienting PVC bend pipe is taken out, biaxial-orienting PVC pipe bend will can be made after the excision of its both ends redundance,
As shown in Figure 9.
When carrying out step S323, temperature can be passed through into elbow forming die 3 from the second stomata 46 and is higher than 90 DEG C
Hot gas, while by the first pumping outward of stomata 45；Similarly with embodiment 1, the heat of elbow forming die 3 is entered by the second stomata 46
Gas can play the role of to heating or keep the temperature to elbow forming die 3, and then achieve the purpose that make tubing to continue to keep elastomeric state；
By the first stomata 45, pumping can make to form negative pressure between middle layer die body 32 and outer layer die body 33 outward, to promote tubing to move forward.
In embodiment 2 and embodiment 3, when carrying out step S313 or step S323, elbow forming die 3 can be also placed in
In incubator, further to be kept the temperature to elbow forming die 3.
As above-described embodiment 2 and embodiment 3 it is found that the internal diameter of biaxial-orienting PVC pipe bend obtained by embodiment 2 is equal to
The outer diameter of internal layer die body 31, outer diameter are equal to the internal diameter of middle layer die body 32, biaxial-orienting PVC pipe bend obtained by embodiment 3
Internal diameter be equal to middle layer die body 32 outer diameter, outer diameter be equal to outer layer die body 33 internal diameter.So, it is seen that the device of embodiment 1
The biaxial-orienting PVC pipe bend that two kinds of different sizes can be manufactured has the function of that a tool is dual-purpose, there is good practicability and warp
Ji property；When designing the device of embodiment 1, enterprise determines the ruler of each component of the device according to the size for the elbow to be made
It is very little, drawing is then redesigned out, production division is transferred to process the device；Later, biaxial-orienting PVC pipe bend is made
When, device assemble accordingly according to production demand (being small size elbow or large scale elbow), it is very real
With, and two kinds of a tool can also save production cost for enterprise.
In addition, be connected together due to base enlargement of pipe mold 1/2 and elbow forming die 3, so that entire raw
Production process is carried out continuously, and the base pipe of elastomeric state can immediately enter curved after the biaxial tension of base enlargement of pipe mold 1/2
Brake forming in head molding die 3；That is, by the process that PVC-U base pipe is transformed into PVC-O bend pipe be it is coherent, it is intermediate without pause,
Therefore the efficiency of production is higher, and the process produced is also fairly simple reliable.
Should be noted: base pipe as referred to herein is PVC-U pipe；Traction in embodiment 2 and embodiment 3, when base pipe is mobile
Power is provided by the dragger that base pipe tail end is arranged in.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. making the device of biaxial-orienting PVC pipe bend, which is characterized in that including by the first base enlargement of pipe mold (1), the second base
The external member that enlargement of pipe mold (2), elbow forming die (3), mold tail portion corking (4) and die head corking (5) form；
The first base enlargement of pipe mold (1) is used to be connected to one end of the elbow forming die (3) comprising successively connects
The first guide section (11), the first seal section (12), the first expansion segment (13) and the first sizing section (14) being integrated；Described
First guide section (11) is cylindrical body, for importing base pipe to be expanded；First seal section (12) also for cylindrical body and
Outer diameter is slightly larger than the outer diameter of the first guide section (11), and the first seal section (12) and the first guide section (11) are seamlessly transitted by the conical surface
Connection；First expansion segment (13) is cone, and small-caliber end is connect with the first seal section (12), large diameter end and first
Sizing section (14) connection；First sizing section (14) is cylindrical body, and the outer diameter of the first sizing section (14) is close greater than first
Seal the outer diameter of section (12)；
The second base enlargement of pipe mold (2) is also used for being connected to one end of the elbow forming die (3) comprising successively
The second guide section (21), the second seal section (22), the second expansion segment (23) and the second sizing section (24) being linked together；It is described
The second guide section (21) it is consistent with the structure of first guide section (11), be also used for importing base pipe to be expanded；Described
Second seal section (22) is consistent with the structure of first seal section (12), the second seal section (22) and the second guide section (21)
It is connected smoothly by the conical surface；Second expansion segment (23) is cone, and small-caliber end and the second seal section (22) are even
It connects, large diameter end is connect with the second sizing section (24)；Second sizing section (24) is cylindrical body, and the second sizing section (24)
Outer diameter be greater than the outer diameter of the second seal section (22), while also greater than the outer diameter of the first sizing section (14)；
The elbow forming die (3) includes internal layer die body (31), middle layer die body (32) and outer layer die body (33)；It is described
Internal layer die body (31) be hollow elbow-shaped structure, by the first half module (311) and the second half module (312) that can be separated from each other
It is composed, and the outer diameter of internal layer die body (31) is consistent with the outer diameter of first sizing section (14)；The middle layer die body
It (32) is also hollow elbow-shaped structure, by the third half module (321) that can be separated from each other and the combination of the 4th half module (322)
At, and the internal diameter of middle layer die body (32) is greater than the outer diameter of the internal layer die body (31), outer diameter and second sizing section (24)
Outer diameter it is consistent；The outer layer die body (33) is also hollow elbow-shaped structure, by the 5th half module that can be separated from each other
(331) it is composed with the 6th half module (332), and the internal diameter of outer layer die body (33) is greater than the outer of the middle layer die body (32)
Diameter；
The mold tail portion corking (4) for cover be located at elbow forming die (3) not with the first base enlargement of pipe mold (1) or the
One end of two base enlargement of pipe molds (2) connection comprising bottom plate (41), the first stage body (42), the second stage body being linked together
(43) and third stage body (44)；The bottom plate (41) is disc；First stage body (42) is located at the bottom plate
(41) side, the first stage body (42) are equipped with the first groove (421) away from the centre of bottom plate (41) side, the first groove (421)
Surrounding there is first annular protrusion to enclose (422), first annular protrusion circle (422) can interference-fit type be inserted into the outer layer die body
(33) gap between the middle layer die body (32)；Second stage body (43) is set to first groove
(421) in, the second stage body (43) is equipped with the second groove (431) away from the centre of the first stage body (42) side, the second groove (431)
Surrounding there is the second convex annular looping (432), the second convex annular looping (432) can interference-fit type be inserted into the middle layer mould
Gap between body (32) and the internal layer die body (31)；The third stage body (44) is set to second groove
(431) in, third stage body (44) be cylindrical structure and can interference-fit type be inserted into the inner cavity of the internal layer die body (31)；
The die head corking (5) is located at what elbow forming die (3) was connect with the first base enlargement of pipe mold (1) for covering
One end comprising the hollow disk (51) and hollow ring (52) being linked together；The intermediate circular hole of the hollow disk (51)
Diameter is between the internal diameter and outer diameter of the middle layer die body (32)；The hollow ring (52) is connected to open circles
The side of plate (51) and with hollow circular plate (51) coaxial line, hollow ring (52) can interference-fit type be inserted into the outer layer die body
(33) gap between the middle layer die body (32).
2. the device of production biaxial-orienting PVC pipe bend according to claim 1, which is characterized in that described the first half
Mould (311) is provided with the first locating slot (311a), and the second half module (312) is provided with the first positioning column (312a), the first half module
(311) it is realized and is positioned by the cooperation of the first locating slot (311a) and the first positioning column (312a) with the second half module (312)；It is described
Third half module (321) be provided with the second locating slot (321a), the 4th half module (322) is provided with the second positioning column (322a),
It is fixed that three half modules (321) and the 4th half module (322) are realized by the cooperation of the second locating slot (321a) and the second positioning column (322a)
Position；5th half module (331) is provided with the first otic placode (331a), and the 6th half module (332) is provided with the second otic placode
(332a), the 5th half module (331) and the 6th half module (332) are real by the connection of the first otic placode (331a) and the second otic placode (332a)
Both existing fixation.
3. the device of production biaxial-orienting PVC pipe bend according to claim 2, which is characterized in that the mold tail
Portion's corking (4) is provided at least two first stomatas (45), at least two second stomatas (46) and a third stomata (47)；
First stomata (45) runs through the first stage body (42) and bottom plate (41) by first annular protrusion circle (422)；Described
Two stomatas (46) are by the second convex annular looping (432) through the second stage body (43), the first stage body (42) and bottom plate (41)；Institute
The third stomata (47) stated while through third stage body (44), the second stage body (43), the first stage body (42) and bottom plate (41).
4. the device of production biaxial-orienting PVC pipe bend according to claim 3, which is characterized in that the mould head
Portion's corking (5) is provided at least two the 4th stomatas (53)；4th stomata (53) runs through the hollow disk simultaneously
(51) and the hollow ring (52).
5. the device of production biaxial-orienting PVC pipe bend according to claim 4, which is characterized in that first base
Enlargement of pipe mold (1), which is provided with, to be axially penetrated through in first through hole therein (16)；Second base enlargement of pipe mold (2) setting
It axially penetrates through in the second through-hole (26) therein.
6. the device of production biaxial-orienting PVC pipe bend according to claim 5, which is characterized in that the first base pipe
Dilatation mold (1) further includes the first screwed ring (15), which is connected to the first sizing section (14) far from first
The outer wall of one end of expansion segment (13), the first screwed ring (15) is provided with external screw thread；The internal layer die body (31) and the first base
One end of enlargement of pipe mold (1) connection is provided with internal screw thread；The external screw thread of first screwed ring (15) and the first base enlargement of pipe mold
(1) internal screw thread can be threadedly engaged realization connection；
The second base enlargement of pipe mold (2) further includes the second screwed ring (25), which is connected to second
The one end of sizing section (24) far from the second expansion segment (23), the outer wall of the second screwed ring (25) are provided with external screw thread；In described
One end that interbed die body (32) is connect with the second base enlargement of pipe mold (2) is provided with internal screw thread；The outer spiral shell of second screwed ring (25)
The internal screw thread of line and the second base enlargement of pipe mold (2) can be threadedly engaged realization connection.
7. utilizing the method for device production biaxial-orienting PVC pipe bend as claimed in claim 6, which is characterized in that this method can
Make two kinds of biaxial-orienting PVC pipe bends of different sizes；
This method comprises the following steps:
S1, assembling elbow forming die (3): it is placed on middle layer die body (32) except internal layer die body (31), makes outer layer die body
(33) it is placed on except internal layer die body (32)；
Wherein, pass through the first locating slot (311a) and the first positioning column when the first half module (311) is docked with the second half module (312)
Positioning is realized in the cooperation of (312a), when third half module (321) and the 4th half module (322) dock by the second locating slot (321a) and
Positioning is realized in the cooperation of second positioning column (322a), and the 5th half module (331) and the 6th half module (332) pass through the first otic placode when docking
The fixation of the two is realized in the connection of (331a) and the second otic placode (332a)；
S2, mold tail portion corking (4) is filled in elbow forming die (3) not with the first base enlargement of pipe mold (1) or the second base pipe
One end of dilatation mold (2) connection；
Wherein, when mold tail portion corking (4) is filled in, first annular protrusion circle (422) interference-fit type insertion outer layer die body (33)
Gap between middle layer die body (32), the second convex annular looping (432) interference-fit type be inserted into middle layer die body (32) and
Gap between internal layer die body (31)；
Later, if production internal diameter is equal to internal layer die body (31) outer diameter, outer diameter is equal to the pvc pipe elbow of middle layer die body (32) internal diameter
When, it carries out as follows:
S311, make the first base enlargement of pipe mold (1) be connected to elbow forming die (3) far from mold tail portion corking (4) one end,
Meanwhile die head corking (5) is filled in into one end that elbow forming die (3) is connected with the first base enlargement of pipe mold (1)；
Wherein, when connecting the first base enlargement of pipe mold (1), external screw thread and internal layer die body (31) of the first screwed ring (15) are utilized
Screw-internal thread fit realizes connection；When filling in die head corking (5), hollow ring (52) interference-fit type is inserted into outer layer die body
(33) gap between middle layer die body (32)；
S312, embryonic tube is heated to elastomeric state, base pipe is then made to import the first base enlargement of pipe mold by the first guide section (11)
(1), so that base pipe is first passed through the first seal section (12), then successively pass through the first expansion segment (13) again
With the first sizing section (14), it is made to expand into biaxial-orienting PVC pipe；
S313, later, under the action of tractive force, the biaxial-orienting PVC pipe after making expansion continues to move forward and enter internal layer mould
Gap between body (31) and middle layer die body (32) forms biaxial-orienting PVC bend pipe after being bent it；
S314, after biaxial-orienting PVC pipe roll forming, be allowed to cool sizing；
After S315, sizing, elbow forming die (3) are dismantled, while removing the first base enlargement of pipe mold (1), mold tail portion corking
(4) and die head corking (5)；Then biaxial-orienting PVC bend pipe is taken out, it is double by being made after the excision of its both ends redundance
Axis is orientated pvc pipe elbow；
If production internal diameter is equal to middle layer die body (32) outer diameter, outer diameter is equal to the pvc pipe elbow of outer layer die body (33) internal diameter, press
Following steps carry out:
S321, make the second base enlargement of pipe mold (2) be connected to elbow forming die (3) far from mold tail portion corking (4) one end；
Wherein, when the second base enlargement of pipe mold (2) connects, using the second screwed ring (25) external screw thread and middle layer die body (32) it is interior
It is threadedly engaged realization connection；
S322, embryonic tube is heated to elastomeric state, base pipe is then made to import the second base enlargement of pipe mold by the second guide section (21)
(2), so that base pipe is first passed through the second seal section (22), then successively pass through the second expansion segment (23) again
With the second sizing section (24), it is made to expand into biaxial-orienting PVC pipe；
S323, later, under the action of tractive force, the biaxial-orienting PVC pipe after making expansion continues to move forward and enters middle layer
Gap between die body (32) and outer layer die body (33) forms biaxial-orienting PVC bend pipe after being bent it；
S324, after biaxial-orienting PVC pipe roll forming, be allowed to cool sizing；
After S325, sizing, elbow forming die (3) are dismantled, while removing the second base enlargement of pipe mold (2) and mold tail portion corking
(4)；Then biaxial-orienting PVC bend pipe is taken out, biaxial-orienting PVC pipe bend will be made after the excision of its both ends redundance.
8. the method for production biaxial-orienting PVC pipe bend according to claim 7, which is characterized in that carrying out step
When S313, the hot gas that temperature is higher than 90 DEG C is passed through into elbow forming die (3) from the first stomata (45) and third stomata (47),
It is evacuated outward by the second stomata (46) simultaneously；
When carrying out step S323, the hot gas that temperature is higher than 90 DEG C is passed through into elbow forming die (3) from the second stomata (46),
It is evacuated outward by the first stomata (45) simultaneously.
9. the method for production biaxial-orienting PVC pipe bend according to claim 8, which is characterized in that carrying out step
When S313 or step S323, elbow forming die (3) is in incubator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910723347.1A CN110394972B (en) | 2019-08-07 | 2019-08-07 | Device for manufacturing biaxial orientation PVC pipe elbow and method for manufacturing elbow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910723347.1A CN110394972B (en) | 2019-08-07 | 2019-08-07 | Device for manufacturing biaxial orientation PVC pipe elbow and method for manufacturing elbow |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110394972A true CN110394972A (en) | 2019-11-01 |
| CN110394972B CN110394972B (en) | 2020-08-21 |
Family
ID=68327671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910723347.1A Active CN110394972B (en) | 2019-08-07 | 2019-08-07 | Device for manufacturing biaxial orientation PVC pipe elbow and method for manufacturing elbow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110394972B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5409651A (en) * | 1993-10-06 | 1995-04-25 | Atkins & Pearce, Inc. | Method of forming tubular parts |
| EP0461644B1 (en) * | 1990-06-15 | 1995-09-06 | Ruppert, Hans-Peter | Method and device to bend deformable, for example bendable pipes |
| CN2367449Y (en) * | 1999-01-08 | 2000-03-08 | 曾绍谦 | Simple plastic mould for three-dimensionally bending pipe |
| CN103419357A (en) * | 2012-05-21 | 2013-12-04 | 昆山濡鑫光电科技有限公司 | Forming device and forming method of display protective screen |
| CN103448237A (en) * | 2012-05-31 | 2013-12-18 | 舍雷尔与特里尔塑料技术有限两合公司 | Device and method for roll bending a profile, profile, method for manufacturing curved profile workpieces, curved profile workpiece, and extruded and roll bending line |
| EP3081366A1 (en) * | 2015-03-09 | 2016-10-19 | BFG International | Method of producing a hollow lightweight fibre reinforced plastic handle |
| CN206124202U (en) * | 2016-11-11 | 2017-04-26 | 四川多联实业有限公司 | Plastic conduit bending device |
| CN206812465U (en) * | 2017-01-22 | 2017-12-29 | 江苏科技大学 | A kind of biaxial orientation shaped device of polyvinyl chloride pipe |
| CN206870365U (en) * | 2017-06-28 | 2018-01-12 | 成都市四联塑胶管道工程有限公司 | A kind of PVC O tubing biaxial tension equipment |
| CN107599366A (en) * | 2017-10-16 | 2018-01-19 | 福建融音塑业科技有限公司 | A kind of environment-friendly type pipe fitting manufactures equipment |
-
2019
- 2019-08-07 CN CN201910723347.1A patent/CN110394972B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0461644B1 (en) * | 1990-06-15 | 1995-09-06 | Ruppert, Hans-Peter | Method and device to bend deformable, for example bendable pipes |
| US5409651A (en) * | 1993-10-06 | 1995-04-25 | Atkins & Pearce, Inc. | Method of forming tubular parts |
| CN2367449Y (en) * | 1999-01-08 | 2000-03-08 | 曾绍谦 | Simple plastic mould for three-dimensionally bending pipe |
| CN103419357A (en) * | 2012-05-21 | 2013-12-04 | 昆山濡鑫光电科技有限公司 | Forming device and forming method of display protective screen |
| CN103448237A (en) * | 2012-05-31 | 2013-12-18 | 舍雷尔与特里尔塑料技术有限两合公司 | Device and method for roll bending a profile, profile, method for manufacturing curved profile workpieces, curved profile workpiece, and extruded and roll bending line |
| EP3081366A1 (en) * | 2015-03-09 | 2016-10-19 | BFG International | Method of producing a hollow lightweight fibre reinforced plastic handle |
| CN206124202U (en) * | 2016-11-11 | 2017-04-26 | 四川多联实业有限公司 | Plastic conduit bending device |
| CN206812465U (en) * | 2017-01-22 | 2017-12-29 | 江苏科技大学 | A kind of biaxial orientation shaped device of polyvinyl chloride pipe |
| CN206870365U (en) * | 2017-06-28 | 2018-01-12 | 成都市四联塑胶管道工程有限公司 | A kind of PVC O tubing biaxial tension equipment |
| CN107599366A (en) * | 2017-10-16 | 2018-01-19 | 福建融音塑业科技有限公司 | A kind of environment-friendly type pipe fitting manufactures equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110394972B (en) | 2020-08-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104149354B (en) | The production equipment and process of a kind of heavy caliber two-way stretch PVC | |
| CN202053416U (en) | Double-helix cooling water channel structure | |
| CN110394972A (en) | The method for making the device of biaxial-orienting PVC pipe bend and making the elbow | |
| CN109278278B (en) | Polyethylene solid wall pipe and expansion forming device thereof | |
| CN207432591U (en) | A kind of precise forming mold of major diameter O-ring | |
| CN203267200U (en) | Mould cooling system | |
| CN215619880U (en) | Cooling device for pipe blank of plastic extrusion pipeline | |
| CN203726673U (en) | Straightening mold | |
| CN208840216U (en) | Heat the pouring-in continuous work type metal extrusion press of liquid | |
| CN111730855A (en) | Flaring die special for PVC-O and flaring process thereof | |
| CN212707930U (en) | Extrusion die head for pipe processing | |
| CN205173117U (en) | Hydro -cylinder structure for cavity plastics blow molding machine bush device | |
| CN111251570B (en) | High-polymer pipe extrusion head extruding device and using method thereof | |
| CN210415395U (en) | Ejector sleeve ejecting device | |
| CN210851290U (en) | Device for manufacturing biaxial orientation PVC pipe elbow | |
| CN209335866U (en) | A kind of underwater cutpellet die head for processing polylactic acid | |
| CN107214925A (en) | A kind of quick extrusion die of pvc pipe | |
| CN105946183A (en) | Plastic mold used for automotive interior | |
| CN110587965A (en) | Multistage temperature control machining forming device and machining method for PVC-O pipe | |
| CN218256674U (en) | Raw material extrusion structure suitable for high-pressure micro-foaming blow molding | |
| CN209273839U (en) | A kind of auto parts and components auxiliary shaping apparatus | |
| CN211616535U (en) | Sizing sleeve for biaxial orientation pipe | |
| CN219686343U (en) | Extrusion forming die with temperature control function | |
| CN206528053U (en) | Novel extrusion forming cooling system | |
| CN216182681U (en) | Plastic pipe blow molding locking sealing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200715 Address after: 314011 east side of Meijia Road, Wangdian Town, Xiuzhou District, Jiaxing City, Zhejiang Province (rooms 6 and 7 within Jiaxing Ruixiang hardware and Electrical Co., Ltd.) Applicant after: Zhejiang Rongde Management Co., Ltd Address before: 620000 Suzhe primary school, Dongsi section, Meizhou Avenue, Dongpo District, Meishan City, Sichuan Province Applicant before: Xu Dexiang |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |