CN107053638B - A kind of BOPP extruder die head bolt positioning device based on Thickness sensitivity - Google Patents

A kind of BOPP extruder die head bolt positioning device based on Thickness sensitivity Download PDF

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Publication number
CN107053638B
CN107053638B CN201710429917.7A CN201710429917A CN107053638B CN 107053638 B CN107053638 B CN 107053638B CN 201710429917 A CN201710429917 A CN 201710429917A CN 107053638 B CN107053638 B CN 107053638B
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Prior art keywords
bolt
thickness
film
unit
die head
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CN107053638A (en
Inventor
陈利锋
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ZHEJIANG KINLEAD INNOVATIVE MATERIALS Co Ltd
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ZHEJIANG KINLEAD INNOVATIVE MATERIALS Co Ltd
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Priority to CN201910794350.2A priority Critical patent/CN110884085B/en
Priority to CN201710429917.7A priority patent/CN107053638B/en
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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
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B29C48/31—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets being adjustable, i.e. having adjustable exit sections
    • B29C48/313—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets being adjustable, i.e. having adjustable exit sections by positioning the die lips
    • 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
    • B29C2948/92704—Temperature
    • 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
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses a kind of BOPP extruder die head bolt positioning device based on Thickness sensitivity, it includes acquisition unit, computing unit, sentences and know unit, adjust unit and data storage cell, computing unit calculates thickness value and each bolt location at each bolt based on the thickness curve data that acquisition unit acquires, sentence and knows unit retrieval and identify bolt to be processed, the not good enough movement of film thickness zero bias before and after comparing adjusting after adjusting unit to bolt to be processed progress temperature adjusting, and each bolt estimated location is adjusted according to amount of movement.The present invention can quickly be accurately positioned diebolt, and output token has the film profile thickness value number of all diebolt positions to set, and adjusting actuating quantity is small in position fixing process, avoid influence of the long-time bolt heating to normally producing.

Description

A kind of BOPP extruder die head bolt positioning device based on Thickness sensitivity
Technical field
The present invention relates to film fabrication techniques fields, and in particular to a kind of BOPP extruder die head spiral shell based on Thickness sensitivity Bolt positioning device.
Background technique
BOPP film, that is, bidirectional stretching polypropylene film be as obtained by biaxial tension, it be by physics, chemistry and The plastic product that the means specially-shaped such as machinery is process.BOPP production line is a complicated nonlinear system.Its technique stream Journey specifically includes that raw material melting, extrusion, cooling and shaping, longitudinal stretching, cross directional stretch, trimming, sided corona treatment, batches.
Physical mechanical property such as tensile strength, elongation at break, turbidity, gloss as BOPP film product quality indicator Deng because depending mainly on the attribute of material itself, so all easily reaching requirement.And as the main of re-workability and service performance Con trolling index, i.e. film gauge variation and Film Average Thickness deviation, then depend mainly on the manufacturing process of film.Even if manufacture For plastics thickness control in the deviation range that standard allows, but after the winding of thousands of tunics is accumulative, thickness deviation is big in the process Position on may form the bad defects such as hoop, sudden and violent muscle or chase, the reprocessing that these defects directly influence user uses, Such as phenomena such as the dislocation of color printing chromatography or gluing irregular corrugation, it is made to reduce or lose use value.So in BOPP film production Topic is how to improve and stabilizing films thickness and precision between the quality of most critical.
For plastics thickness control based on the real-time detection to thickness, it is logical that such as application No. is 2014201577223 Chinese patents After crossing X-ray scanning acquisition film thickness, two PID regulators are respectively adopted to carry out the control of the horizontal and vertical thickness of film System, similar method is also used application No. is 2007201517097 Chinese patent, is pointed out simultaneously, in order to obtain thickness Uniform film, it is necessary to realize that thickness measurements and measurement position are accurately positioned.Application No. is 2014204575910 China Patent then carries out the alignment of basement membrane by deckle.
Currently, carrying out the corresponding common method of bolt to the thickness data of calibrator output, there are mainly two types of, first is that It crosses and marks at different bolts, corresponding place is then found on calibrator scanning support, to determine the position of bolt；Two It is also to measure the developed width of film web while detecting section with calibrator, calculate film referring to the width of die head Necking down amount, and then diebolt is corresponded to.Both methods is required to manually carry out auxiliary mark according to practical condition Know, measure and judge, artificial judgment is not only inaccurate, can not also stablize.Due to lacking the continuous accurate positionin to film profile, The thickness control effect of film and the quality of produced product suffer from influence.For this reason, it may be necessary to solve automatically defeated to calibrator Film profile thickness curve out carries out the problem of bolt positioning.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of dresses that calibrator can be assisted to carry out thickness measuring positioning to bolt It sets, the bolt selected by dynamic regulation, the film profile thickness curve of calibrator output is handled and calculated, judges spiral shell The deviation of anchoring position and corresponding adjustment bolt position, so that extruder die hook bolt be accurately positioned, output token has mould The film profile thickness value set of hook bolt position, provides for Plastics Thickness Control System and improves accurate feedback signal.
The technical solution of the invention is as follows, provides a kind of BOPP extruder die head based on Thickness sensitivity with flowering structure Bolt positioning device comprising acquisition unit, computing unit are sentenced and know unit, adjust unit and data storage cell,
The acquisition unit obtains film profile thickness curve data from calibrator；
The computing unit calculates extruder bolt location, and calculates thickness at each bolt based on thickness curve collected Value, output token have the film profile thickness value set of diebolt position；
It is described to sentence the retrieval of knowledge unit, identify bolt to be processed, and adjustment bolt position, and computing unit are deposited with data Storage unit carries out data exchange；
The adjusting unit carries out temperature adjusting to bolt to be processed, and control executing agency changes opening for extruder lip Degree.
Preferably, the film profile thickness curve data are expressed with film profile image format, wrapped in described image A film thickness curve, reference axis and the auxiliary line parallel with reference axis indicated in different colors respectively is included, and to indicate The character of the film thickness curve root thickness value, coordinate scale value, thickness average value.
Preferably, the computing unit calculates bolt location by opposite side and uniform location in initial alignment.
Preferably, the adjacent bolt combination sentenced knowledge unit and retrieve all thickness deviation contrary signs in the search cycle, It selects only this group of bolt to be adjusted as bolt to be processed, and by the adjusting unit for minimum one group of difference in combination.
Detection differentiation is carried out to the film thickness after the adjusting preferably, sentencing and knowing unit, according to the bolt combination The movement of zero-deviation position adjusts bolt location in range, and updates data storage cell content.
Preferably, the adjusting unit controls diebolt solid-state relay by executing agency with PWM mode On-off, so that the aperture of die head section where adjusting the bolt by the temperature for controlling bolt, thin corresponding to the bolt to realize The thickness of film section is adjusted.
Preferably, the adjusting unit controls diebolt solid-state relay by executing agency in a manner of PFM On-off, so that the aperture of die head section where adjusting the bolt by the temperature for controlling bolt, thin corresponding to the bolt to realize The thickness of film section is adjusted.
Using the solution of the present invention, compared with prior art, it is online to have the advantage that the present invention is applied to film production The auxiliary positioning of Thickness sensitivity is adjusted and not good enough according to zero bias after adjusting by one group of bolt to thickness deviation contrary sign Position is mobile, is accordingly adjusted, is realized to the automatic accurate fixed of measured film thickness position to current fastener locations Position, effectively prevents the influence artificially to judge incorrectly, provides real-time foundation to carry out the control of film thickness consistency.The present invention It is adjusted by bolt only small to thickness deviation to carry out auxiliary positioning, it is small to adjust actuating quantity；And automatic positioning process Short, fast and accurately bolt positioning is avoided that in BOPP film manufacturing process that thickness deviation is difficult to the problem of being zeroed.
Detailed description of the invention
Fig. 1 is BOPP technological process of production schematic diagram；
Fig. 2 is that the present invention is based on the structural schematic diagrams of the BOPP extruder die head bolt positioning device of Thickness sensitivity；
Fig. 3 is extruder die head partial structural diagram；
Fig. 4 is calibrator display interface figure in BOPP production；
Fig. 5 is extruder die hook bolt deviations schematic diagram；
Fig. 6 is that film thickness adjusts schematic diagram when diebolt positioning is to the right；
Fig. 7 is that film thickness adjusts schematic diagram when diebolt positioning is to the left；
Fig. 8 is that the automatic bolt of apparatus of the present invention positions work flow diagram；
Fig. 9 is to adjust unit in the present invention to control signal schematic representation.
Specific embodiment
The preferred embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention is not restricted to these Embodiment.The present invention covers any substitution made in the spirit and scope of the present invention, modification, equivalent method and scheme.
In order to make the public have thorough understanding to the present invention, it is described in detail in the following preferred embodiment of the present invention specific Details, and the present invention can also be understood completely in description without these details for a person skilled in the art.
The present invention is more specifically described by way of example referring to attached drawing in the following passage.It should be noted that attached drawing is adopted With more simplified form and using non-accurate ratio, only to facilitate, lucidly aid in illustrating the embodiment of the present invention Purpose.
As shown in Figure 1, BOPP film production is since raw material melting, it is sheet, that is, slab through extrusion molding, slab is again It is wide volume film that it is thin, which to stretch broadening exhibition, through vertical and horizontal, the processing such as trimming and corona is then carried out in distraction procedure, finally Winding is big parent roll, subsequent that parent roll is cut and packed by order requirements.Since thickness plays to Guan Chong product quality Therefore the effect wanted often is carried out thickness and supervised in real time to slab and wide volume film respectively in BOPP production with two calibrators Survey, two calibrators can externally export the thickness data collection of section, while they be also connected with display with show slab or The profile image of width volume film.In two calibrators front to slab thickness measuring that at the beginning of film pull-out when use, wait until Just pause uses after second calibrator investment next.
As shown in Fig. 2, the present invention is based on the BOPP extruder die head bolt positioning devices 100 of Thickness sensitivity comprising adopt Collection unit 110, computing unit 120 are sentenced and know unit 130, adjust unit 140 and data storage cell 150.Acquisition unit 110 from Calibrator sends computing unit 120 to after obtaining film profile thickness curve data；Bolt location is carried out by computing unit 120 Initial calculation, and marked on the abscissa of thickness curve collected, output token has the film profile of diebolt position Thickness value set is stored in data storage cell 150；Sentence and knows unit 130 according to current film profile thickness value set, inspection Rope identifies bolt to be processed, by adjusting unit 140 by executing agency 200 to the bolt to be processed in extruder 300 Temperature control is carried out, die lips aperture is adjusted, to adjust film thickness；Sentence know unit 130 will also be to above-mentioned adjusting after Thickness changes result and carries out quadratic search and differentiation, then correspondingly adjustment bolt position, updates in data storage cell 150 Content.
In conjunction with shown in Fig. 2 and Fig. 3, the die head of extruder 300 includes upper and lower two lips 310, forms lip between lips 330, lip opening size is adjusted by transversely arranged heat bolts 320.The present invention is to carry out the accurate positionin of diebolt, Need to carry out the part bolt 320 on extruder die head dynamic regulation with auxiliary judgment.
The collected film profile thickness curve data of acquisition unit institute, can be the numerical string arranged by certain format, It is also likely to be to be presented with film profile image format, the calibrator as is to be conveyed to display with VGA image.
As shown in figure 4, thering are two width to cut open respectively in the film profile data acquired with image format i.e. film profile image Face thickness curve graph and some character informations；Wherein, a-quadrant indicates the corresponding thickness a reference value of film thickness profile axis of abscissas The longitudinal coordinate scale value 5% of coordinate system in 35.5um and curve picture；The region C is the target thickness for stating current film profile Curve, reference axis are set by the description of a-quadrant, and the auxiliary line parallel with reference axis is also contained in coordinate system；In B area AVG=35.51um refers to the thickness average value of current film profile shown by C region curve, and R=2.83% is then on curve The very poor value of statistics of lower fluctuation.Since film profile image has these Block Characteristics, the present invention is based on Thickness sensitivities The computing unit of BOPP extruder die head bolt positioning device, the module of two progress image procossings of inside setting, is word respectively Accord with extraction module and curve segmentation module, the two modules the former from obtaining film thickness curve in image in the film profile image Root thickness value, coordinate scale value, thickness average value；The latter is then based on these numerical value, and one is being extracted from image It is institute by its pixel coordinate conversion in the picture to point each on the curve after continuous whole and achiasmate film thickness curve Corresponding thickness value.
It is illustrated in figure 5 extruder die hook bolt deviations schematic diagram, wherein Fig. 5 a gives bolt physical location and exists The case where when on the left of estimated location, the case where when Fig. 5 b gives bolt physical location on the right side of estimated location.In figure, middle part water Flat line is the corresponding reference line of setting thickness value, and curve is the thickness curve being calculated, the triangle point of following above and Shi Yi it not estimate and actual bolt location.BOPP film produces during slab horizontal drawing, and draw ratio is 7-9 times, for Such as the wide volume specification of 8280mm, slab width is about 1000mm, and when diebolt is 39, each bolt corresponds to slab width About 25mm, removes the comparatively fixed bolt in both ends, and each corresponding width in figure of adjusting bolt in middle part is essentially identical.
It can be seen that from Fig. 5 a when estimated location is to the right, estimate bolt its physical location at the place J with K in J1, K1 Place, wherein the deviation of bolt is positive value at J1, but since its estimated location is at J, will be because by J when carrying out thickness adjusting Deviation increases aperture controlling die lips aperture and thickens, i.e., the deviation of film thickness not but not reduces at J1 bolt, will also Increase；Similarly, the film thickness deviation at K1 bolt will keep die lips aperture without subtracting because controlling by deviation at K It is small.When bolt estimated location is to the left, as shown in Figure 5 b, identical problem will also occur, the film thickness of position is inclined at bolt R1, S1 Difference will further increase deviation because being controlled respectively by deviation at R, S, and the film thickness deviation of position is then and at K at bolt T Similar, deviation will not reduce.
For this purpose, in order to enable film thickness monitoring can converge to zero-deviation without vibrating repeatedly up and down in zero-deviation, it should make Bolt estimated location is obtained as far as possible close to physical location.The present invention passes through the specific bolt of dynamic regulation and is judged according to regulating effect Estimated location is to the left or to the right.
As shown in Figures 6 and 7, when diebolt estimated location is to the left or to the right, film thickness regulating effect will be different.Two In figure, X-axis indicates that deviation Reference line, straight line AB indicate the film thickness curved section between two estimations bolt location A and B, do not lose one As property, it is assumed that A and B is symmetrical about X-axis and thickness value therebetween is linearly distributed；P point is the intersection point of AB and X-axis, to work as Leading zero deviation point.C and D point is respectively the physical location of corresponding two bolts of estimated position A and B, i.e., carries out by deviation at A, B Bolt adjust, will actually be respectively occurring at C, D at, it is wherein a left side in Fig. 6 that straight line CD, which is that straight line AB moves horizontally parallel lines, Move and to move to right in Fig. 7；M point is the intersection point of CD and X-axis.In figure, U, V and E and F, G are the distal point for assisting arrow, straight line FG To carry out new film thickness curved section after ratio control and regulation based on deviation at A, B to bolt at C, D two, the intersection point of FG and X-axis is Q Point, each vertical arrows are the change of film thickness after ratio control, dMFor the estimated bias value of bolt location, dzfFront and back is controlled for ratio Zero-deviation point displacement.
As shown in figure 8, the automatic bolt of apparatus of the present invention positions workflow are as follows:
(S1) system initialization is carried out first, sets period, threshold value；
(S2) film profile thickness curve data, the corresponding thickness value of calculated curve are acquired from calibrator；
(S3) turn S4 if existing location data, otherwise carry out initial alignment, it is after artificial opposite side, each bolt is equal Film profile thickness value collection that is even to be distributed on curve horizontal axis, updating fastener locations set and be marked with diebolt position It closes, turns S7 later；
(S4) then turn S5 if not the search cycle, otherwise carry out bolt retrieval, search for the positive and negative contrary sign of all thickness deviations Adjacent bolt combination, and select the smallest group echo of the difference of wherein thickness deviation be (Mj1, Mj2) conduct spiral shell to be processed Bolt control in the ratio of respective thickness deviation to two bolts, while recording two by adjusting unit by executing agency The abscissa XP for the point that thickness deviation is zero between a bolt, turns S7 later；
(S5) if not the period is differentiated, then turn S6, otherwise carry out the judgement and adjusting of bolt location estimated bias, again The zero bias retrieved between bolt (Mj1, Mj2) are not good enough, remember that its abscissa is XQ；Compare XQ and XP, if the two difference is being set In threshold range, then turn S8；All bolts are moved to right if XQ is less than XP, otherwise move to left all bolts, update bolt positioning Location sets and the film profile thickness value set for being marked with diebolt position, turn S7 later；
It (S6) is other periods, positioning is not dealt with, and turns S7；
(S7) it waits next period to arrive, turns S2；
(S8) positioning finishes, and terminates.
After aforementioned proportion control and regulation, extruder lip aperture changes, and the thickness of extrusion molding slab is also accordingly adjusted It is whole, Thickness sensitivity is carried out by calibrator after slab drawn, correspondingly, the thickness information that acquisition unit obtains also constantly is brushed Newly.The period is differentiated after the search cycle, and delay therebetween is measured according to production.Preferably, automatic bolt positioned Cheng Zhong, the search cycle can be adjusted with the time span for differentiating the period according to the population deviation of current film thickness, and be automatically positioned It can also be repeated according to Thickness Variation.
It is each adjustable to middle part on extruder die head for the judgement for carrying out bolt location estimated bias in conjunction with shown in Fig. 6~8 Bolt is saved, is retrieved based on current estimated location, finds nearest from thickness reference line and the positive and negative contrary sign of deviation a pair of of spiral shell Bolt carries out ratio control to them.As shown in fig. 6, practical bolt location is on the left of estimated location, it is inclined at hypothesis A, B two in figure Difference is equal, then after carrying out ratio controls to two bolts of C, D, at two the knots modification of thickness by respectively with A as shown in Figure 6 b, Arrow at B two is consistent, i.e., is arrow U and V by the arrow horizontal left at A, B two.So, as fig. 6 c, practical at A to obtain To regulated quantity will be the corresponding component as shown by arrow A in triangle MUC of location A.As shown in fig 6d, by arrow E and V Head end moves to the subpoint of A point and D point on straight line AB respectively, obtains arrow F and G, then FG is to be based on to bolt at C, D two A, film thickness curved section new after deviation progress ratio control and regulation at B.Fig. 6 a is the complex chart of Fig. 6 b, 6c and 6d, Fig. 7 and Fig. 6 It is similar.
As can be seen from Figures 6 and 7, the intersection point Q of FG and X-axis, position on the left of P point or right side, the position depending on M It sets, Q and the M points of two sides in the not good enough P of former zero bias.Therefore, it in automatic bolt position fixing process, when finding that Q is on the right side of P, says Bright original bolt estimated location is to the right, it should move to left estimated location, as shown in Figure 6；Conversely, estimated location should then be moved to right, As shown in Figure 7.To select suitable estimated location displacement, the estimation of bolt location can be established by test experiment in advance Deviation dMFront and back zero-deviation point displacement d is controlled with ratiozfBetween mapping table, when on-line control, first calculate and work as Preceding dzfThen estimated bias value d is obtained by tabling look-upM。
Aforementioned proportion control, is that thickness deviation is converted to temperature compensation value, by the adjuster on die head with pulse Mode controls the on-off of solid-state relay on computer heating control channel, to control the temperature of current diebolt.Due to metal Expansion and contraction property, when heater conducting when slab lip gap compression, the film thickness of such slab lip can be gradually Reduce, it is on the contrary then increase.
Be illustrated in figure 9 and adjust unit control signal schematic representation, adjust unit can by PWM wave as illustrated in fig. 9 or The PFM wave of person as shown in figure 9b instructs.Wherein, the cycle T of PWM waveSIt remains unchanged, by changing turn-on time in a period TONTo adjust control amount；And PFM is then held on that the time is constant, adjusts control amount by changing the size in period.As excellent In the fabrication process PWM mode can be selected, otherwise optional PFM mode in choosing when heating frequent.
The present invention is based on the BOPP extruder die head bolt positioning devices of Thickness sensitivity to pass through preferred specific one group of bolt Thickness proportion adjusting is carried out, and bolt estimated location is adjusted according to the variation for adjusting front and back film thickness, it can be quickly to mould Hook bolt is accurately positioned, and output token has the film profile thickness value number of all diebolt positions to set.
In addition to this, although embodiment is separately illustrated and is illustrated above, it is related to the common technology in part, in this field Those of ordinary skill apparently, can be replaced and integrate between the embodiments, be related to one of embodiment and record is not known Content, then can refer to another embodiment on the books.
Embodiments described above does not constitute the restriction to the technical solution protection scope.It is any in above-mentioned implementation Made modifications, equivalent substitutions and improvements etc., should be included in the protection model of the technical solution within the spirit and principle of mode Within enclosing.

Claims (6)

1. a kind of BOPP extruder die head bolt positioning device based on Thickness sensitivity, including acquisition unit, computing unit, sentence knowledge Unit adjusts unit and data storage cell,
The acquisition unit obtains film profile thickness curve data from calibrator；
The computing unit calculates extruder bolt location, and calculates thickness value at each bolt based on thickness curve collected, Output token has the film profile thickness value set of diebolt position；
It is described to sentence the retrieval of knowledge unit, identify that bolt to be processed, and adjustment bolt position, and computing unit store list with data Member carries out data exchange；
The adjusting unit carries out temperature adjusting to bolt to be processed, and control executing agency changes the aperture of extruder lip,
The adjacent bolt combination sentenced knowledge unit and retrieve the positive and negative contrary sign of all thickness deviations in the search cycle, selects in combination Minimum one group of difference is only adjusted this group of bolt as bolt to be processed, and by the adjusting unit.
2. a kind of BOPP extruder die head bolt positioning device based on Thickness sensitivity according to claim 1, feature It is, the film profile thickness curve data are expressed with film profile image format, include respectively with difference in described image A film thickness curve, reference axis and the auxiliary line parallel with reference axis that color indicates, and to indicate the film thickness curve The character of root thickness value, coordinate scale value, thickness average value.
3. a kind of BOPP extruder die head bolt positioning device based on Thickness sensitivity according to claim 1, feature It is, the computing unit calculates bolt location by opposite side and uniform location in initial alignment.
4. a kind of BOPP extruder die head bolt positioning device based on Thickness sensitivity according to claim 1, feature It is, sentences knowledge unit and detection differentiation is carried out to the film thickness after the adjusting, according to zero-deviation within the scope of the bolt combination The movement of position adjusts bolt location, and updates data storage cell content.
5. a kind of BOPP extruder die head bolt positioning device based on Thickness sensitivity according to claim 1, feature It is, the adjusting unit controls the on-off of diebolt solid-state relay by executing agency with PWM mode, to pass through The temperature of bolt is controlled to adjust the aperture of bolt place die head section, to realize the thickness tune of film section corresponding to the bolt Section.
6. a kind of BOPP extruder die head bolt positioning device based on Thickness sensitivity according to claim 1, feature It is, the adjusting unit controls the on-off of diebolt solid-state relay by executing agency in a manner of PFM, to pass through The temperature of bolt is controlled to adjust the aperture of bolt place die head section, to realize the thickness tune of film section corresponding to the bolt Section.
CN201710429917.7A 2017-05-28 2017-05-28 A kind of BOPP extruder die head bolt positioning device based on Thickness sensitivity Active CN107053638B (en)

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CN201910794350.2A CN110884085B (en) 2017-05-28 2017-05-28 BOPP extruder die bolt positioning device based on thickness detection
CN201710429917.7A CN107053638B (en) 2017-05-28 2017-05-28 A kind of BOPP extruder die head bolt positioning device based on Thickness sensitivity

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111409244B (en) * 2019-01-08 2023-05-30 湖北江升新材料有限公司 Die head bolt alignment method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101228021A (en) * 2005-06-01 2008-07-23 3M创新有限公司 Method for controlling crossing omentum thickness distribution of biaxial orientation polymer membrane
CN201094009Y (en) * 2007-06-22 2008-07-30 北京化工大学 Full-automatic reciprocating wide breadth X ray thin membrane thickness measuring instrument
CN103522552A (en) * 2013-11-04 2014-01-22 上海市塑料研究所 Fluorine-containing thin film tape casting preparing method
CN203766002U (en) * 2014-04-03 2014-08-13 山东胜通集团股份有限公司 Online thickness detection control system of polyester optical films
CN203779831U (en) * 2014-03-26 2014-08-20 上海盛本包装材料有限公司 Blow mould capable of finely regulating film thickness

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105799178B (en) * 2016-04-08 2018-09-25 中国铁道科学研究院铁道建筑研究所 Process units for drain bar, splash guard or drainable waterproofing plate

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101228021A (en) * 2005-06-01 2008-07-23 3M创新有限公司 Method for controlling crossing omentum thickness distribution of biaxial orientation polymer membrane
CN201094009Y (en) * 2007-06-22 2008-07-30 北京化工大学 Full-automatic reciprocating wide breadth X ray thin membrane thickness measuring instrument
CN103522552A (en) * 2013-11-04 2014-01-22 上海市塑料研究所 Fluorine-containing thin film tape casting preparing method
CN203779831U (en) * 2014-03-26 2014-08-20 上海盛本包装材料有限公司 Blow mould capable of finely regulating film thickness
CN203766002U (en) * 2014-04-03 2014-08-13 山东胜通集团股份有限公司 Online thickness detection control system of polyester optical films

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