CN101973123A - Wall thickness uniformity control system of tube - Google Patents
Wall thickness uniformity control system of tube Download PDFInfo
- Publication number
- CN101973123A CN101973123A CN2010105131491A CN201010513149A CN101973123A CN 101973123 A CN101973123 A CN 101973123A CN 2010105131491 A CN2010105131491 A CN 2010105131491A CN 201010513149 A CN201010513149 A CN 201010513149A CN 101973123 A CN101973123 A CN 101973123A
- Authority
- CN
- China
- Prior art keywords
- information
- extruder
- input
- control system
- tube
- 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
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- 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
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- 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
- B29C2948/92095—Angular velocity
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- 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
- B29C2948/9238—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/9239—Screw or gear
-
- 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
- B29C2948/926—Flow or feed rate
-
- 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
- B29C2948/92609—Dimensions
- B29C2948/92647—Thickness
-
- 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
- B29C2948/92676—Weight
-
- 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
- B29C2948/92828—Raw material handling or dosing, e.g. active hopper or feeding device
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a wall thickness uniformity control system of a tube. The system comprises an information acquisition part, an information processing part and an output control part, wherein the information acquisition part comprises a gravity meter, a proximity switch and an encoder; the gravity meter is arranged at the upper end of a feed port of an extruder for measuring inlet amount; the proximity switch is arranged at one end of an extruder screw for measuring the rotation speed of the screw; the encoder is arranged at a traction end of the extruder for measuring the traction speed; the information processing part calculates the input information, compares the information with set original parameter and inputs a result into the output control part; and the output control part controls the rotation speed or the traction speed of the screw according to the input result. By controlling the extrusion output to be constant, the wall thickness of the tube is uniform, so that the weight of the tube is ensured, meanwhile, the material can be saved, the cost can be controlled and the competitiveness can be improved.
Description
Technical field
The present invention relates to a kind of control system, be specifically related to a kind of plastic pipe wall thickness uniformity control system.
Background technology
Control the uniformity of tube wall thickness, not only can control the quality of tubing, can also economical with materials.Prior art can be set a upper limit value and lower limit value to the wall thickness of tubing usually and produce for guaranteeing the service property (quality) of tubing, and such tubing of producing just inevitably can use more raw material, is unfavorable for the control of cost.At present, the extruding production line of plastic pipe, its extruder in whole production line in occupation of core status, play a part very important to the product quality of producing, present control mode is mainly: by the given target velocity of driving screw drive speed adjustor, screw rod rotates according to given speed then, thereby extrudes the plastic cement of certain fusion in the unit interval, or title " extrusion capacity ".How to guarantee " extrusion capacity " constant in the unit interval, the uniformity of control tube wall thickness is had conclusive effect.But present this control mode can be subjected to the influence of a lot of uncertainties, particularly because material material grain is not of uniform size, has influence on the stability of material inlet amount, thereby influences the constant of " extrusion capacity ", can't guarantee the quality of tubing.
Thereby, need a kind of control system that can control the tube wall thickness uniformity now badly.
Summary of the invention
The objective of the invention is to overcome above-mentioned shortcoming of the prior art, a kind of control system that can control the tube wall thickness uniformity is provided.
A kind of tube wall thickness uniformity control system of the present invention comprises information gathering part, information processing part, output control part,
Described information gathering partly comprises the gravitometer measuring device, near switch and encoder, described gravitometer measuring device is installed on extruder charging aperture upper end, measures inlet amount; Describedly be installed on extruder screw one end, measure screw speed near switch; Encoder is installed on the extruder traction end, measures hauling speed; The information that the information gathering part is gathered is input to the information processing part;
Described information processing part is calculated the information of input, and compares with the initial parameter of setting, and the result is input to output control part;
Output control part is according to input results control screw speed or hauling speed.
In a preferred embodiment of the invention, described is photoelectric sensor switch near switch.
In a preferred embodiment of the invention, described information treatment part branch comprises display.
In a preferred embodiment of the invention, described gravitometer measuring device adopts the mode of weight-loss type continuous measurement to measure inlet amount.
Operation principle of the present invention, now set initial data according to the tubing specification of being produced, after beginning to produce, the gravimetric machine that is installed on extruder charging aperture upper end begins the inlet amount of continuous measurement material, the encoder that begins to measure screw speed or be installed on the extruder traction end near switch that is installed on extruder screw one end simultaneously begins to measure hauling speed, and will record data and in time feed back to the information processing part, the information processing part is calculated the information of input, and compare with the initial parameter of setting, the result is input to output control part, and output control part is controlled screw speed or hauling speed according to input results.
The present invention compares its advantage with the prior art scheme: constant by control " extrusion capacity ", and make the tube wall thickness degree even, thereby guaranteed the weight of tubing, simultaneously can economical with materials, controlled cost, improved competitiveness.
Description of drawings
Fig. 1 is a kind of embodiment schematic flow sheet of the present invention;
Wherein, 1 is that information gathering part, 2 is that information processing part, 3 is an output control part.
The specific embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is described in detail, thereby protection scope of the present invention is made more explicit defining so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that.
A kind of tube wall thickness uniformity control system of the present invention, comprise information gathering part 1, information processing part 2, output control part 3, described information gathering part 1 comprises the gravitometer measuring device, near switch and encoder, described gravitometer measuring device is installed on extruder charging aperture upper end, measures inlet amount; Describedly be installed on extruder screw one end, measure screw speed near switch; Encoder is installed on the extruder traction end, measures hauling speed; The information that information gathering part 1 is gathered is input to information processing part 2; Described information processing part 2 is calculated the information of input, and compares with the initial parameter of setting, and the result is input to output control part 3; Output control part 3 is controlled screw speed or hauling speed according to input results.
Preferably, described is photoelectric sensor switch near switch; Described information processing part can also comprise display, and the data instant playback of being gathered is come out; Described gravitometer measuring device adopts the mode of weight-loss type continuous measurement to measure inlet amount.
The present invention has two kinds of mode of operations, and a kind of is that pattern is extruded in control, and a kind of is the control traction mode.
The present invention is work like this:
Select mode of operation, if mode of operation is extruded in the control of selecting, set initial data according to the tubing specification of being produced: the corresponding corresponding screw speed of inlet amount, after beginning simultaneously to produce, the gravimetric machine that is installed on extruder charging aperture upper end begins the inlet amount of continuous measurement material, what be installed on extruder screw one end simultaneously begins to measure screw speed near switch, and the data that obtain are in time fed back to the information processing part, the information processing part is calculated the information of input, and compare with the initial parameter of setting, the result is input to output control part, and output control part is controlled the increase or the minimizing of screw speed according to input results.
If what select is the mode of operation of control traction, set initial data according to the tubing specification of being produced: the corresponding corresponding hauling speed of inlet amount, after beginning simultaneously to produce, the gravimetric machine that is installed on extruder charging aperture upper end begins the inlet amount of continuous measurement material, the encoder that is installed on the extruder traction end simultaneously begins to measure hauling speed, and the data that obtain are in time fed back to the information processing part, the information processing part is calculated the information of input, and compare with the initial parameter of setting, the result is input to output control part, and output control part is controlled the increase of hauling speed according to input results or is reduced.
The above; it only is the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; any those of ordinary skill in the art are in the disclosed technical scope of the present invention; variation or the replacement that can expect without creative work all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.
Claims (4)
1. a tube wall thickness uniformity control system comprises information gathering part, information processing part, output control part, it is characterized in that,
Described information gathering partly comprises the gravitometer measuring device, near switch and encoder, described gravitometer measuring device is installed on extruder charging aperture upper end, measures inlet amount; Describedly be installed on extruder screw one end, measure screw speed near switch; Encoder is installed on the extruder traction end, measures hauling speed; The information that the information gathering part is gathered is input to the information processing part;
Described information processing part is calculated the information of input, and compares with the initial parameter of setting, and the result is input to output control part;
Output control part is according to input results control screw speed or hauling speed.
2. a kind of tube material and tube wall uniformity control system according to claim 1 is characterized in that, described is photoelectric sensor switch near switch.
3. a kind of tube material and tube wall uniformity control system according to claim 1 is characterized in that described information treatment part branch comprises display.
4. a kind of tube material and tube wall uniformity control system according to claim 1 is characterized in that, described gravitometer measuring device adopts the mode of weight-loss type continuous measurement to measure inlet amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105131491A CN101973123A (en) | 2010-10-20 | 2010-10-20 | Wall thickness uniformity control system of tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105131491A CN101973123A (en) | 2010-10-20 | 2010-10-20 | Wall thickness uniformity control system of tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101973123A true CN101973123A (en) | 2011-02-16 |
Family
ID=43573045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105131491A Pending CN101973123A (en) | 2010-10-20 | 2010-10-20 | Wall thickness uniformity control system of tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101973123A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103624965A (en) * | 2013-10-08 | 2014-03-12 | 宁波方力科技股份有限公司 | Meter-weight control system of plastic-pipe extruding equipment |
| CN106067350A (en) * | 2015-04-22 | 2016-11-02 | 德尔福技术有限公司 | Extrusion press and method of operating thereof |
| CN106671379A (en) * | 2016-12-29 | 2017-05-17 | 贵州省盘县益康管业有限责任公司 | Adjustment method for raw material amount in PE pipe production |
| CN109203422A (en) * | 2018-08-27 | 2019-01-15 | 四川省海维塑胶有限公司 | A kind of PE plastic tube wall thickness deviation control technique based on rice weight control system |
| CN109774157A (en) * | 2018-12-17 | 2019-05-21 | 黄淮学院 | A kind of control method and computer readable storage medium of 3D printer |
-
2010
- 2010-10-20 CN CN2010105131491A patent/CN101973123A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103624965A (en) * | 2013-10-08 | 2014-03-12 | 宁波方力科技股份有限公司 | Meter-weight control system of plastic-pipe extruding equipment |
| CN106067350A (en) * | 2015-04-22 | 2016-11-02 | 德尔福技术有限公司 | Extrusion press and method of operating thereof |
| CN106067350B (en) * | 2015-04-22 | 2019-01-01 | 安波福技术有限公司 | Extrusion press and its operating method |
| CN106671379A (en) * | 2016-12-29 | 2017-05-17 | 贵州省盘县益康管业有限责任公司 | Adjustment method for raw material amount in PE pipe production |
| CN109203422A (en) * | 2018-08-27 | 2019-01-15 | 四川省海维塑胶有限公司 | A kind of PE plastic tube wall thickness deviation control technique based on rice weight control system |
| CN109774157A (en) * | 2018-12-17 | 2019-05-21 | 黄淮学院 | A kind of control method and computer readable storage medium of 3D printer |
| CN109774157B (en) * | 2018-12-17 | 2020-12-08 | 黄淮学院 | Control method of 3D printer and computer readable storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110216 |