CN108454076A - A kind of production mould and production method of polytetrafluoroethylene (PTFE) interruption bellows - Google Patents
A kind of production mould and production method of polytetrafluoroethylene (PTFE) interruption bellows Download PDFInfo
- Publication number
- CN108454076A CN108454076A CN201810076149.6A CN201810076149A CN108454076A CN 108454076 A CN108454076 A CN 108454076A CN 201810076149 A CN201810076149 A CN 201810076149A CN 108454076 A CN108454076 A CN 108454076A
- Authority
- CN
- China
- Prior art keywords
- bellows
- mold
- interruption
- ptfe
- polytetrafluoroethylene
- 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
- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 48
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 48
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 41
- -1 polytetrafluoroethylene Polymers 0.000 title claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims 1
- 230000032683 aging Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/22—Corrugating
- B29C53/30—Corrugating of tubes
-
- 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
- B29L2023/00—Tubular articles
- B29L2023/18—Pleated or corrugated hoses
Abstract
The present invention provides production moulds and production method that a kind of polytetrafluoroethylene (PTFE) is interrupted bellows, including mouth mold, core model and workbench, mouth mold includes square set, frame bottom is fixed with lower mold, lower mould upstream is equipped with the upper mold being connected to by lead screw at the top of square set, it is fixed with rotating wheel at the top of lead screw, arc lower forming ends are equipped in the middle part of the upper surface of lower mold, upper arc forming ends are equipped in the middle part of upper mold lower face, upper arc forming ends and arc lower forming ends are equipped with heating component, the inner arc surface of upper arc forming ends and arc lower forming ends is respectively equipped with screw thread and lower screw thread；Core model includes plug, is connect with motor, and square set two sides bottom is equipped with scroll wheel.Production mould is divided into upper mold and lower mold, forms bellows and the existing pipeline of straight tube interruption, which can apply the production with interruption bellows, can also be used in the production process of full section bellows, increase the practicability of mold, reduce production cost.
Description
Technical field
The present invention relates to bellows production technical fields, are specifically related to a kind of production of polytetrafluoroethylene (PTFE) interruption bellows
Mold and production method.
Background technology
Currently, the draining of domestic Helicopter Main slurry and equipment platform is using metallic aluminium or compo pipe, these materials exist
It is drained in natural environment, aircraft utilization environment, can be easy to be corroded or aging, the performance of drainpipe can be sent out under the action of oil
Raw decaying, variation, lead to breakage, aging, leakage phenomenon, to influence body, component, airborne equipment and the complete machine of aircraft just
It is often used and service life, it is interspersed that normal straight tube is unfavorable for the angled bending in aircraft body again, in order to avoid metal drain
Too fast corrosion and aging are managed, breakage, the leakage of drainpipe are prevented, while mitigating the own wt of aircraft, uses polytetrafluoroethylene (PTFE)
Can bend pipe replace metal tube at a kind of necessary selection.
Bellows is all full section in the prior art, and although full section bellows can adapt in a variety of environment, but full section
The required raw material of bellows are more, if portion is only needed to be bent, it will cause larger waste, existing molds
In only for the production mould and production method of full section bellows, do not produce mold existing for bellows and straight tube interval and
Production method, therefore, it is necessary to a kind of molds and production method that can produce the product.
Invention content
It is more it is an object of the invention to solve the required material of full section bellows in the prior art, cause waste to ask
Topic now provides a kind of production mould and production method of polytetrafluoroethylene (PTFE) interruption bellows, can add polytetrafluoroethylene (PTFE) straight tube
Work is interruption bellows structure, has not only saved material, while being more prone to when fixed, has been hardly damaged.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of production mould of polytetrafluoroethylene (PTFE) interruption bellows, including mouth mold, core model and workbench,
The mouth mold includes square set, and the frame bottom is fixed with lower mold, and the lower mould upstream is equipped with logical
The upper mold that lead screw is connected at the top of square set is crossed, rotating wheel, the upper end of the lower mold are fixed at the top of the lead screw
Middle face is equipped with arc lower forming ends, upper arc forming ends is equipped in the middle part of upper mold lower face, the upper arc forming ends are under
Arc forming ends are equipped with heating component, and the inner arc surface of the upper arc forming ends and arc lower forming ends is respectively equipped with spiral shell
Line and lower screw thread；
The core model includes plug, and the mandrel surface is helicitic texture, and described plug one end is connect with motor, the core
Stick bottom interruption is equipped with detachable support portion, and the support portion is detachably connected with workbench, and motor is fixed on the table；
Gap between when the upper screw thread and the screw-thread fit of the lower screw thread whole screw thread formed and plug is 2-3mm；
Square set two sides bottom is respectively respectively equipped at least two scroll wheels.
Molding die is divided into openable and closable upper mold and lower mold, in use, is incited somebody to action by the place in needs
Upper mold and lower mould open/close, to control the position of bellows segment, forming straight tube, there are structures with bellows interval.
Preferably, the workbench is equipped with the guide rail coordinated with scroll wheel.Scroll wheel and guide rail coordinate, and mouth mold can be
Under the action of scroll wheel and guide rail, moved along the direction of guide rail.
Preferably, the motor is stepper motor.Stepper motor can control the rotation angle of plug, and then control mouth mold
Displacement distance on guide rail, it is ensured that the length of bellows and straight tube in process of production.
Preferably, square set both sides inner wall is fixed with guide part.Guide part can effectively control upper mold
The offset occurred during moving up and down makes the upper screw thread of upper mold and lower mold and lower screw thread will not in clamping process
It shifts, to ensure the forming quality of ripple.
It is interrupted the production method of bellows using a kind of polytetrafluoroethylene (PTFE) of the production mould, includes the following steps,
S1：Heating component is connected to power supply, mouth mold is heated；
S2：Straight tube is sleeved on plug：
S3：Plug is inserted into mouth mold, rotates clockwise plug, closes mouth mold, with core model rotational forming；
S4：After part is molded, mouth mold is opened, the straight pipe of desired size is promoted, close mouth mold, repeats S3；
S5：After being repeatedly performed, when straight tube reaches core model 4/5, stops rotating, open mouth mold, reversely rotate plug, exit
Molded bellows.
Preferably, the mouth mold heating temperature is 220 DEG C -280 DEG C.
Preferably, the plug rotating speed is 50-100 revs/min.
Preferably, the length of straight pipe is more than the 10%-20% of required Bellows Length.
Preferably, the plug length is more than the 20%-30% of required Bellows Length.
Preferably, the straight tube is polytetrafluoroethylene (PTFE) straight tube.
The beneficial effects of the invention are as follows：Production mould is divided into upper mold and lower mold, by mold in different location
Folding, can purposive adjustment bellows position, form the existing pipeline of bellows and straight tube interruption, which can not only
The production of enough applications and interruption bellows, while can also be used in the production process of full section bellows, increase mold
Practicability reduces production cost.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the mouth mold main view schematic diagram of the present invention；
Fig. 2 is the mouth mold left view figure structure schematic representation of the present invention；
Fig. 3 is the structural schematic diagram of the mouth mold and core model of the present invention；
In figure：1, scroll wheel, 2, lower mold, 3, upper mold, 4, guide part, 5, lead screw, 6, rotating wheel, 7, square set,
8, upper arc forming ends, 9, arc lower forming ends, 10, heating component, 11, plug, 12, motor, 13, workbench, 14, guide rail.
Specific implementation mode
Below by specific embodiment, and in conjunction with attached drawing, technical scheme of the present invention will be further explained in detail.
As shown in Figure 1 to Figure 3, a kind of production mould of polytetrafluoroethylene (PTFE) interruption bellows, including mouth mold, core model and work
Platform 13,
The mouth mold includes square set 7, and the frame bottom is fixed with lower mold 2, and 2 top of lower mold is equipped with
The upper mold 3 at 7 top of square set is connected to by lead screw 5,5 top of the lead screw is fixed with rotating wheel 6, the lower mold
It is equipped with arc lower forming ends 9 in the middle part of 2 upper surface, upper arc forming ends 8, the upper arc are equipped in the middle part of 3 lower face of upper mold
Forming ends 8 and arc lower forming ends 9 are equipped with heating component 10, the inner circle of upper the arc forming ends 8 and arc lower forming ends 9
Cambered surface is respectively equipped with screw thread and lower screw thread；Upper mold 3 and lower mold 2 are set as opening-closing structure, can be in the position arbitrarily needed
It sets and mold is opened and closed, and then position and the length of bellows can be controlled.
The core model includes plug 11, and 11 surface of the plug is helicitic texture, and 11 one end of the plug connects with motor 12
It connects, 11 bottom of plug interruption is equipped with detachable support portion, and the support portion is detachably connected with workbench 13, and motor 12 is solid
It is scheduled on workbench 13；Dismountable support portion include with and the arc surface that is adapted to of plug 11, arc surface lower end passes through support base
It is fixedly connected, support base is detachably connected with workbench, and when plug is longer, core can be prevented by being equipped with detachable support portion
Vibration caused by stick is long in motion process influences the concentricity of plug and mouth mold.
Gap between when the upper screw thread and the screw-thread fit of the lower screw thread whole screw thread formed and plug 11 is 2-
3mm；The screw thread of plug 11 and upper screw thread and lower screw-thread fit, the rotation angle of plug 11 is controlled by motor 12, can be controlled
Gap between the whole screw thread that the position of mouth mold movement, the screw thread of plug 11 and upper screw thread and lower screw thread are formed is 2-3mm, this
In embodiment, gap 2.6mm, the gap between 11 thread crest diameter of plug and straight tube internal diameter is 0.4mm at this time.
7 two sides bottom of the square set is respectively respectively equipped at least two scroll wheels 1.Scroll wheel can be such that mouth mold is leading
It is moved on rail.
Wherein, the workbench 13 is equipped with the guide rail 14 coordinated with scroll wheel 1.Scroll wheel 1 is placed on guide rail 14, and edge
The movement of guide rail 14, the mouth mold being rotatablely connected with scroll wheel 1 can be moved along 14 direction of guide rail, pass through scroll wheel 1 and guide rail
14 cooperation, mouth mold will not shift in moving process, increase the concentricity with the cooperation of core model.
Wherein, the motor 12 is stepper motor 12.Stepper motor 12 can be accurately controlled the rotation angle of plug 11,
And then control the shift position of mouth mold.
Wherein, 7 both sides inner wall of the square set is fixed with guide part 4.The upper mold 3 of mouth mold is moving up and down process
In, offset of the upper mold 3 in moving process can be eliminated by guide part 4, screw thread and lower screw thread were molding in guarantee
It can be aligned, will not be shifted completely in journey.
It is interrupted the production method of bellows using a kind of polytetrafluoroethylene (PTFE) of above-mentioned production mould, includes the following steps,
S1：Heating component 10 is connected to power supply, mouth mold is heated；
S2：Straight tube is sleeved on plug 11：
S3：Plug 11 is inserted into mouth mold, plug 11 is rotated clockwise, closes mouth mold, with core model rotational forming；
S4：After part is molded, mouth mold is opened, the straight pipe of desired size is promoted, close mouth mold, repeats S3；
S5：After being repeatedly performed, when straight tube reaches core model 4/5, stops rotating, open mouth mold, reversely rotate plug 11, move back
Go out molded bellows.
Wherein, the mouth mold heating temperature is 220 DEG C -280 DEG C.In the present embodiment, mouth mold heating temperature is 250 DEG C, this
Under temperature condition, the forming that the corrugated appearance of bellows can be stablized, is not in the ripple unobvious caused by temperature is too low
With the excessively high bellows disrepair phenomenon of temperature.
Wherein, 11 rotating speed of the plug is 50-100 revs/min.Plug 11 can cause plug 11 to tremble when rotating speed is too fast
It is dynamic, the cooperation of plug 11 and upper screw thread and lower screw thread is influenced, to influence the forming quality of bellows, in the present embodiment, plug
11 rotating speed is 80 revs/min, at this point, the shake of plug 11 is smaller, the influence to ripple pipe size in error range, at this time
The finished product production efficiency of rotating speed is also higher.
Wherein, the length of straight pipe is more than the 15%-20% of required Bellows Length.Since straight tube is processed as bellows
Length can be caused to reduce, therefore, be needed in process by the increase appropriate of the length of straight tube.In the present embodiment, straight tube is long
18% of degree more than required Bellows Length.
Wherein, 11 length of the plug is more than the 20%-30% of required Bellows Length.Straight tube is placed on core completely at this time
When on stick 11, it can ensure all to be sleeved on plug 11.
Wherein, the straight tube is polytetrafluoroethylene (PTFE) straight tube.
Above-mentioned embodiment is only a preferred solution of the present invention, not the present invention is made in any form
Limitation, on the premise of not exceeding the technical scheme recorded in the claims also other variations and modifications.
Claims (10)
1. a kind of production mould of polytetrafluoroethylene (PTFE) interruption bellows, which is characterized in that including mouth mold, core model and workbench,
The mouth mold includes square set, and the frame bottom is fixed with lower mold, and the lower mould upstream, which is equipped with, passes through silk
Bar is connected to the upper mold at the top of square set, is fixed with rotating wheel at the top of the lead screw, in the upper surface of the lower mold
Portion is equipped with arc lower forming ends, and upper arc forming ends, the upper arc forming ends and arc lower are equipped in the middle part of upper mold lower face
Forming ends are equipped with heating component, the inner arc surfaces of the upper arc forming ends and arc lower forming ends be respectively equipped with screw thread and
Lower screw thread；
The core model includes plug, and the mandrel surface is helicitic texture, and described plug one end is connect with motor, the plug bottom
Portion's interruption is equipped with detachable support portion, and the support portion is detachably connected with workbench, and motor is fixed on the table；
Gap between when the upper screw thread and the screw-thread fit of the lower screw thread whole screw thread formed and plug is 2-3mm；
Square set two sides bottom is respectively respectively equipped at least two scroll wheels.
2. a kind of production mould of polytetrafluoroethylene (PTFE) interruption bellows according to claim 1, it is characterised in that：The work
Make platform and is equipped with the guide rail coordinated with scroll wheel.
3. a kind of production mould of polytetrafluoroethylene (PTFE) interruption bellows according to claim 1, it is characterised in that：The electricity
Machine is stepper motor.
4. a kind of production mould of polytetrafluoroethylene (PTFE) interruption bellows according to claim 1, it is characterised in that：The side
Shape holder both sides inner wall is fixed with guide part.
5. utilizing a kind of producer of polytetrafluoroethylene (PTFE) interruption bellows described in any one of any one of claims 1 to 44 production mould
Method, it is characterised in that：Include the following steps,
S1：Heating component is connected to power supply, mouth mold is heated；
S2：Straight tube is sleeved on plug：
S3：Plug is inserted into mouth mold, rotates clockwise plug, closes mouth mold, with core model rotational forming；
S4：After part is molded, mouth mold is opened, the straight pipe of desired size is promoted, close mouth mold, repeats S3；
S5：After being repeatedly performed, when straight tube reaches core model 4/5, stops rotating, open mouth mold, reversely rotate plug, exit and have become
Type bellows.
6. a kind of production method of polytetrafluoroethylene (PTFE) interruption bellows according to claim 5, it is characterised in that：The mouth
Mould heating temperature is 220 DEG C -280 DEG C.
7. a kind of production method of polytetrafluoroethylene (PTFE) interruption bellows according to claim 5, it is characterised in that：The core
Stick rotating speed is 50-100 revs/min.
8. a kind of production method of polytetrafluoroethylene (PTFE) interruption bellows according to claim 5, it is characterised in that：It is described straight
Length of tube is more than the 10%-20% of required Bellows Length.
9. a kind of production method of polytetrafluoroethylene (PTFE) interruption bellows according to claim 5, it is characterised in that：The core
Stick length is more than the 20%-30% of required Bellows Length.
10. a kind of production method of polytetrafluoroethylene (PTFE) interruption bellows according to claim 5, it is characterised in that：It is described
Straight tube is polytetrafluoroethylene (PTFE) straight tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810076149.6A CN108454076B (en) | 2018-01-26 | 2018-01-26 | Production mold and production method of polytetrafluoroethylene intermittent corrugated pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810076149.6A CN108454076B (en) | 2018-01-26 | 2018-01-26 | Production mold and production method of polytetrafluoroethylene intermittent corrugated pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108454076A true CN108454076A (en) | 2018-08-28 |
| CN108454076B CN108454076B (en) | 2021-09-10 |
Family
ID=63239002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810076149.6A Active CN108454076B (en) | 2018-01-26 | 2018-01-26 | Production mold and production method of polytetrafluoroethylene intermittent corrugated pipe |
Country Status (1)
| Country | Link |
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| CN (1) | CN108454076B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110667092A (en) * | 2019-09-22 | 2020-01-10 | 安徽超星新材料科技有限公司 | Double-wall corrugated pipe production equipment and production method of double-wall corrugated pipe |
| CN112223726A (en) * | 2020-09-29 | 2021-01-15 | 温州市氟塑设备制造厂 | Novel corrugated pipe processing equipment and using method |
| CN113399492A (en) * | 2021-05-11 | 2021-09-17 | 真兰管业科技有限公司 | Production process of sizing pipe for reducing welding seams |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104162977A (en) * | 2013-05-16 | 2014-11-26 | 泰州华腾管道设备有限公司 | Spiral polytetrafluoroethylene bellows forming machine |
| CN107471618A (en) * | 2016-12-21 | 2017-12-15 | 温州风神硅胶制品有限公司 | A kind of corrugated pipe forming machine |
-
2018
- 2018-01-26 CN CN201810076149.6A patent/CN108454076B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104162977A (en) * | 2013-05-16 | 2014-11-26 | 泰州华腾管道设备有限公司 | Spiral polytetrafluoroethylene bellows forming machine |
| CN107471618A (en) * | 2016-12-21 | 2017-12-15 | 温州风神硅胶制品有限公司 | A kind of corrugated pipe forming machine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110667092A (en) * | 2019-09-22 | 2020-01-10 | 安徽超星新材料科技有限公司 | Double-wall corrugated pipe production equipment and production method of double-wall corrugated pipe |
| CN112223726A (en) * | 2020-09-29 | 2021-01-15 | 温州市氟塑设备制造厂 | Novel corrugated pipe processing equipment and using method |
| CN112223726B (en) * | 2020-09-29 | 2022-04-29 | 温州市氟塑设备制造厂 | Corrugated pipe machining equipment and using method |
| CN113399492A (en) * | 2021-05-11 | 2021-09-17 | 真兰管业科技有限公司 | Production process of sizing pipe for reducing welding seams |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108454076B (en) | 2021-09-10 |
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Denomination of invention: A Production Mold and Method for PTFE Intermittent Bellows Granted publication date: 20210910 Pledgee: Zhejiang Hangzhou Yuhang Rural Commercial Bank Co.,Ltd. Yuhang Branch Pledgor: HANGZHOU RIYAO TECHNOLOGY Co.,Ltd. Registration number: Y2024980013839 |