CN106079371A - A kind of politef pressing device and method - Google Patents
A kind of politef pressing device and method Download PDFInfo
- Publication number
- CN106079371A CN106079371A CN201610576595.4A CN201610576595A CN106079371A CN 106079371 A CN106079371 A CN 106079371A CN 201610576595 A CN201610576595 A CN 201610576595A CN 106079371 A CN106079371 A CN 106079371A
- Authority
- CN
- China
- Prior art keywords
- speed
- politef
- pushing
- dipper crowding
- crowding gear
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92009—Measured parameter
- B29C2948/92085—Velocity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92323—Location or phase of measurement
- B29C2948/92361—Extrusion unit
- B29C2948/92409—Die; Nozzle zone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92904—Die; Nozzle zone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
- B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a kind of politef pressing device and method, use the slowest rear fast pushing speed, at the initial stage of pushing, use slower pushing speed so that more loose material can fully compress, by the pushing speed gradually accelerated, the material after compression is made also to be able at the uniform velocity release, so that the speed pushing discharging remains at the uniform velocity, the most stable to ensure whole pushing process, the whole material density being biased out is consistent, provides for subsequent product quality and is effectively ensured.
Description
Technical field
The present invention relates to politef and produce equipment, more specifically refer to a kind of politef pressing device and side
Method.
Background technology
Polytetrafluoroethylproducts products (PTFE) has excellent physics, chemical property, be widely used in national defence, chemical industry, medicine,
The industries such as machinery, electronics.After polyflon addition extrusion aid is pressed into base substrate in advance so that it is be forced through the mould with tapering
Have, it is thus achieved that fibrous object arranged in a uniform, then the technical process of sintered molding is referred to as pushing forming or paste extrusion molding.
Pushing the special equipment that production line has been process above process, production line generally includes plastics mixer, precompressed
Machine, pushing machine, sintering furnace, wrap-up etc..Pushing machine is the key equipment in production line, and the most common pushing machine has machinery
Transmission and two kinds of forms of hydraulic drive.Mechanical transmission-type pushes machine and pushes speed substantially constant, can a tractor serves several purposes, but over loading
Time, equipment easily goes out mechanical breakdown；Fluid pressure type pulling press, after being set up by regulation valve, pressure almost constant, after pushing speed is the fastest
Slowly, during over loading, it is not likely to produce mechanical breakdown.
But, owing to politef pushing is the process that a density tapers into, therefore when pushing at the beginning, by
More loose in the material ratio in mould, push speed, the fibrous material body density being therefore biased out mould is the biggest, and
Shifting onto later, the material in mould is constantly compressed, and density is less, pushes speed slower, not only makes fluid pressure type pulling
The thrust of press needs constantly to increase, and the most sometimes cannot release, and the fibrous material body density being biased out is more and more less,
Thus cause whole product density inconsistent, have impact on the quality of subsequent product.
Summary of the invention
It is an object of the invention to for drawbacks described above, propose a kind of politef pressing device and method, it is possible to ensure
Releasing the consistent in density of fibrous object, whole discharging speed is stable.
To achieve these goals, the present invention is by the following technical solutions.
On the one hand, a kind of politef pressing device, including pushing against mold and dipper crowding gear, pushing against mold front end has
The one little outlet of gradual change, also includes that the exit of pushing against mold is located at by discharging speed detector and controller, discharging speed detector,
In order to detect discharging speed, controller is electrically connected with discharging speed detector, dipper crowding gear respectively, real-time reception velocity measuring
Signal, and export control signal, to control the pushing speed of dipper crowding gear.
Described dipper crowding gear is mechanical type dipper crowding gear.
Described dipper crowding gear is fluid pressure type pulling press mechanism.
Described discharging speed detector is contactless speed detector.
On the other hand, a kind of politef method for push, comprise the following steps:
A. politef is loaded in pushing against mold；
When B. starting, controller control dipper crowding gear low speed and push politef, make politef slowly release；
C. detected discharging speed in real time by discharging speed detector, and transport to controller, then controlled letter by controller output
Number, to control the pushing speed of dipper crowding gear so that discharging speed remains at the uniform velocity.
In step C, when the discharging speed of detection is too fast, the pushing speed of the dipper crowding gear that slowed down by controller；Work as inspection
The discharging speed surveyed is the slowest, is accelerated the pushing speed of dipper crowding gear by controller.
In the technique scheme of the present invention, the politef pressing device of the present invention and method, after using the most slowly
Fast pushing speed, push the initial stage, use slower pushing speed so that more loose material can fully compress, by by
The pushing speed that gradual change is fast so that the material after compression also is able at the uniform velocity release, so that the speed pushing discharging is protected all the time
Holding at the uniform velocity, the most stable to ensure whole pushing process, the whole material density being biased out is consistent, provides for subsequent product quality
It is effectively ensured.
Accompanying drawing explanation
Fig. 1 is the structural representation of the politef pressing device of the present invention.
Detailed description of the invention
Further illustrate technical scheme below in conjunction with the accompanying drawings.
Referring to shown in Fig. 1, a kind of politef pressing device of the present invention is same as the prior art, the most also
Including pushing against mold 1 and dipper crowding gear 2, pushing against mold 1 front end has the little outlet of the gradual change just like example taper, and dipper crowding gear 2 is used
To push the politef material in pushing against mold 1 so that it is be biased out fibrous object from exit.Unlike the prior art
, this pressing device also includes discharging speed detector 3 and controller 4, and discharging speed detector 3 is located at pushing against mold 1
Exit, in order to detect discharging speed, controller 4 is electrically connected, in real time with discharging speed detector 3, dipper crowding gear 2 the most respectively
Receive speed detection signal, and export control signal, to control the pushing speed of dipper crowding gear 2.
Described dipper crowding gear 2 can use mechanical type dipper crowding gear 2, it is possible to uses fluid pressure type pulling press mechanism 2, certainly, also
Other type of dipper crowding gear 2 can be used, by controller 4 electric control, can realize pushing automatically controlling of speed.
Described discharging speed detector 3 can use contactless speed detector, it would however also be possible to employ other type of speed
Degree detector, in order to detect the speed of the material being biased out.
The method for push of the politef pressing device of the present invention is as follows:
First politef is loaded in pushing against mold 1；
Then, use controller 4 to control dipper crowding gear 2 and push in the fastest pushing speed mode after first slow, this be by
When initial, the politef material ratio in pushing against mold 1 is more loose, now uses and pushes at a slow speed, it is possible to make material be filled
Partial compression, it is to avoid the density of initially discharging is the most loose, then material is increasingly tighter, pushes speed and cannot effectively be pushed away by material the most slowly
Go out, it is therefore desirable to accelerate to push speed so that material can effectively discharging.
Further, when pushing beginning, i.e. detected discharging speed in real time by discharging speed detector 3, and transport to controller 4,
Control signal is exported in real time again, to control the pushing speed of dipper crowding gear 2 in real time so that discharging speed is protected all the time by controller 4
Hold at the uniform velocity.Particularly as follows: when the discharging speed of detection is too fast, the pushing speed of the dipper crowding gear 2 that slowed down by controller 4；Work as detection
Discharging speed the slowest, accelerated the pushing speed of dipper crowding gear 2 by controller 4, so that discharging speed remains even
Speed, whole pushing process is the most relatively stable, and makes the whole material density being biased out consistent, thus carries for subsequent product quality
Supply to be effectively ensured.
Those of ordinary skill in the art it should be appreciated that above embodiment be intended merely to illustrate the present invention,
And be not used as limitation of the invention, the change as long as in the spirit of the present invention, to embodiment described above
Change, modification all will fall in the range of claims of the present invention.
Claims (6)
1. a politef pressing device, including pushing against mold and dipper crowding gear, it is little that pushing against mold front end has a gradual change
Outlet, it is characterised in that: also include that the outlet of pushing against mold is located at by discharging speed detector and controller, discharging speed detector
Place, in order to detect discharging speed, controller is electrically connected with discharging speed detector, dipper crowding gear respectively, real-time reception speed
Detection signal, and export control signal, to control the pushing speed of dipper crowding gear.
2. politef pressing device as claimed in claim 1, it is characterised in that:
Described dipper crowding gear is mechanical type dipper crowding gear.
3. politef pressing device as claimed in claim 1, it is characterised in that:
Described dipper crowding gear is fluid pressure type pulling press mechanism.
4. politef pressing device as claimed in claim 1, it is characterised in that:
Described discharging speed detector is contactless speed detector.
5. a politef method for push, it is characterised in that comprise the following steps:
A. politef is loaded in pushing against mold；
When B. starting, controller control dipper crowding gear low speed and push politef, make politef slowly release；
C. detected discharging speed in real time by discharging speed detector, and transport to controller, then exported control signal by controller, with
Control the pushing speed of dipper crowding gear so that discharging speed remains at the uniform velocity.
6. politef method for push as claimed in claim 5, it is characterised in that:
In step C, when the discharging speed of detection is too fast, the pushing speed of the dipper crowding gear that slowed down by controller；When detection
Discharging speed is the slowest, is accelerated the pushing speed of dipper crowding gear by controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610576595.4A CN106079371A (en) | 2016-07-21 | 2016-07-21 | A kind of politef pressing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610576595.4A CN106079371A (en) | 2016-07-21 | 2016-07-21 | A kind of politef pressing device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106079371A true CN106079371A (en) | 2016-11-09 |
Family
ID=57449559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610576595.4A Pending CN106079371A (en) | 2016-07-21 | 2016-07-21 | A kind of politef pressing device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106079371A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060131772A1 (en) * | 2004-12-20 | 2006-06-22 | Toyo Machinery & Metal Co., Ltd. | Method for controlling measurement in injection molding machine, and injection molding machine |
| CN201592478U (en) * | 2010-01-27 | 2010-09-29 | 上海龙磁电子科技有限公司 | Automatic slurry injecting pressure varying device for permanent ferrite wet pressure magnetic tiles |
| CN102343660A (en) * | 2011-11-03 | 2012-02-08 | 曾华良 | Extruding machine with constant extruding quantity |
| CN202826373U (en) * | 2012-10-25 | 2013-03-27 | 无锡天惠塑机有限公司 | Mass analysis system for measuring melt yield |
| CN205272570U (en) * | 2016-01-18 | 2016-06-01 | 杭州信宇塑业有限公司 | Bellows extrusion speed feedback regulation system |
| CN205835950U (en) * | 2016-07-21 | 2016-12-28 | 上海市凌桥环保设备厂有限公司 | A kind of politef pressing device |
-
2016
- 2016-07-21 CN CN201610576595.4A patent/CN106079371A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060131772A1 (en) * | 2004-12-20 | 2006-06-22 | Toyo Machinery & Metal Co., Ltd. | Method for controlling measurement in injection molding machine, and injection molding machine |
| CN201592478U (en) * | 2010-01-27 | 2010-09-29 | 上海龙磁电子科技有限公司 | Automatic slurry injecting pressure varying device for permanent ferrite wet pressure magnetic tiles |
| CN102343660A (en) * | 2011-11-03 | 2012-02-08 | 曾华良 | Extruding machine with constant extruding quantity |
| CN202826373U (en) * | 2012-10-25 | 2013-03-27 | 无锡天惠塑机有限公司 | Mass analysis system for measuring melt yield |
| CN205272570U (en) * | 2016-01-18 | 2016-06-01 | 杭州信宇塑业有限公司 | Bellows extrusion speed feedback regulation system |
| CN205835950U (en) * | 2016-07-21 | 2016-12-28 | 上海市凌桥环保设备厂有限公司 | A kind of politef pressing device |
Non-Patent Citations (1)
| Title |
|---|
| 上海红军塑料厂等: "《工程塑料应用》", 31 August 1971, 上海人民出版社 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161109 |