• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1. DEVICE FOR THE CONTROL FOR PRODUCING MULTIPLE SECTORS CONSISTING PROFILES rubber or thermoplastic synthetic material, comprising extruders with screws coupled to a rotary drive and connected to the extrusion head equipped disposed at its outlet mouthpiece core. supporting device for extruded profile and distance meters located between the profile mouthpiece and supported by the device and connected by means of a regulator with screw rotation drives, characterized in that, in order to improve the quality of the profiles by ensuring the dimensional accuracy of the sectors constituting the sectors, over each extruded sector The profile contains a distance meter, made in the form of a pneumatic pressure sensor and connected via a regulator to a drive 3 of a screw, extruding the corresponding sector. p profile 2. The device according to claim 1, characterized in that the pneumatic pressure sensors are located on the profile die of the extrusion head with the possibility of movement in the radial direction. sj sp: o: l UD
    公开号:SU1175359A3
    申请号:SU833622783
    申请日:1983-07-26
    公开日:1985-08-23
    发明作者:Андерс Дитмар
    申请人:Херманн Бершторфф Машиненбау Гмбх (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to extrusion plants for producing profiles from polymers consisting of a number of sectors of various materials, and can be used to make tire treads in chemical tire industry. The purpose of the invention is to improve the quality of the profiles by ensuring the dimensional accuracy of the sectors constituting the profile. FIG. 1 schematically represents a device for extruding profiles with a longitudinal section; in fig. 2 shows an extrusion head with a control loop, a longitudinal section in FIG. 3; a cross section A-A in FIG. 1 extruded profile with distance meters. The device contains an extrusion head 1 for forming a profile consisting of the upper part 2, the lower part 3 and the stationary middle part 4. In the extrusion head 1 flow channels 5 are made to communicate with the working cavity of the extruder 6, the screw 7 of which is connected to the drive 8 rotation, flow channels 9 for communication with the working cavity of the extruder 10 with rod 11, connected to the rotational drive 12, and flow channels 13 for feeding material from the extruder 14, the screw 15 of which is connected to the rotational drive 16. At the exit of the extrusion head 1 there is a profile mouthpiece 17 (Fig. 2), near which there is a support device for the extruded profile in the form of a conveyor with an output roller 18 that prevents the extruded profile from elongation, consisting of sectors B, C, D, extruded respectively extruders 6, 10 and 14. Between the profile mouthpiece 17 and the output roller 18 supporting each sector B, C, and D exported by the arophil, there are distance meters, made in the form of pneumatically 19-22, pressure sensors associated through a controller 23 to drive rotation of the extruder screw, extruding the corresponding sector .profil. Pressure sensors 1922 can be mounted with the possibility of radial movement on the profile mouthpiece 17 (Fig. 2) or on another part of the extrusion head 1. It is important that pressure sensors 19-22 be located directly at the start of the extrusion head 1 where the outlet extrudable profile has undergone a process of swelling. The magnitude of the extruded profile swell depends on the viscosity of the corresponding extruded mixture and the quantitative ratios of the individual mixtures to each other. The device works in the following way. All three extruders 6, 10 and 14 are fed to their respective mixtures and driven. Look for the output from the profile mouthpiece 17; the extrudable profile is checked relative to its cross section and three components of the mixture (sectors) and by increasing or decreasing the number of revolutions of the corresponding screw, i.e. the corresponding output of the individual mixtures, results in its predetermined thickness. I Then, the pressure sensors 19-22 are displaced a relatively small distance to the extruded profile and fixed. Immediately thereafter, the distance to the extruded profile or the velocity head of the outgoing air streams is measured, and the pressure, thus once determined for this special profile, is set in the regulator 23 as the predetermined pressure. At the same time, the regulator 23 is programmed in such a way that even with a small pressure fluctuation, for example 2 mbar, the effect on the speed of the corresponding auger is turned off in order to provide a predetermined pressure. The extent to which the corresponding output from the extruder has to be increased in order to return to a given size of the extruded profile can be easily determined by testing. When the pressure of the pressure sensors 19-22 drops, for example, an increase in the distance of 24 or 25 occurs. The regulator 23 thus slightly increases the number of revolutions of the screws of the extruders 6 or 10 to be able to return to the given thicknesses of the extruded Lerofil. Thus, the invention provides control of individual sectors of the extruded profile in part of its mass, for example, individual parts (base, treadmill, sidewall) of the tread. By evaluating the individual sectors of the extruded profile, using distance meters, pressure sensors, which are located between the output roller 18 and the extrusion die 1, the moment when the corresponding sector becomes thinner or thicker than the specified one, i.e. the corresponding extruder is too small or. too big a way out. The supporting fixture for the outgoing extrudable profile prevents the extension of the outgoing profile due to gravity. It then provides a very rapid effect on the output of the extruder by acting on the speed of the auger. There is almost no lag time because the flow channels 5, 9 and 13 in the extrusion die are short and the rubber, like hydraulic fluid, is slightly compressed. The magnitude of the change in output, then eats the change in the number of revolutions of the auger, is very small. When starting the device, the desired profile is first established with respect to the thickness of the individual components. Only when all three components of the mixture provide a predetermined thickness, are the pressure sensors 19-22 at a certain distance from the corresponding sector of the extruded profile, and the distance then measured is transferred to the regulator 23 as a predetermined value. 594 When pneumatic pressure sensors 19–22 are installed with a certain pressure fluctuation, i.e. a pressure drop that occurs when the distance from the pressure sensor increases from the corresponding pressure profile pass underneath it, the extruder speed increases. By increasing the speed of the extruder, the mass yield is compressed, and the corresponding profile thickness is again consistent with the specified value. If the distance becomes smaller, i.e., the reference pressure increases, the screw speed is reduced slightly, respectively, associated with the pressure sensor, so that less material is released, and the velocity head depending on the distance to the profile, and thus the profile size returns to its given value. Since, for example, using a pressure sensor can be determined up to ~ 1 mm, extremely accurate monitoring is carried out, and in this case, the advantages of pressure sensors are functional reliability even with large quantities of contaminants, complete safety of operational reliability at high ambient temperatures and insensitivity versus magnetic influence and sound waves. Thus, the invention provides an automatic control of a device for manufacturing a profile consisting of several sectors: with high sensitivity and accuracy of response to the thickness and size of the composite sectors of this profile.
    权利要求:
    Claims (2)
    [1]
    1. DEVICE FOR CONTROL OF MANUFACTURE OF COMPOSITIONS OF SEVERAL SECTORS OF PROFILES OF RUBBER OR THERMOPLASTIC SYNTHETIC MATERIAL, containing extruders with screws connected to rotation drives and connected to an extruder equipped with a profile located at the end and equipped with a profiled die placed between the profile mouthpiece and the supporting device and connected by means of a regulator with auger rotation drives, exl. sistent in that, to improve the quality by ensuring accuracy profiles constituting sectors profile dimensions of each sector of the extruded profile is situated a distance meter, designed as a pneumatic pressure sensor and connected through a regulator to a drive screw extruded profile corresponding sector.
    [2]
    2. The device according to π. 1, characterized in that the pneumatic pressure sensors are located on the profile mouthpiece of the extrusion head with the ability to move in the radial direction.
    1,175,859 A
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1175359A3|1985-08-23|Apparatus for checking sections which consisted of some sectors and are made of rubber or thermopla"tic synthetic material
    US4088721A|1978-05-09|Method and apparatus for controlling the thickness of extruded stock
    CA1308530C|1992-10-13|Procedure for manufacturing pipes and sections out ofthermoplastic plastics
    US4449395A|1984-05-22|Pheological measurement method and apparatus
    GB2171817A|1986-09-03|Extrusion control
    SU1428185A3|1988-09-30|Method and apparatus for checking process of manufacturing elongated profiles consisting of one or several mixtures of rubber or thermoplastic synthetic material
    US5347852A|1994-09-20|On-line rheological measurements for process control
    US3526126A|1970-09-01|Method and apparatus for determining the molecular weight distribution of polymers
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    KR20010075582A|2001-08-09|Device and method for measuring the viscosity of plastic materials
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    US5474720A|1995-12-12|Method of and apparatus for producing elongated shaped bodies of thermoplastic synthetic resin
    US20020146475A1|2002-10-10|Screw extruder and method of controlling the same
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    US3311947A|1967-04-04|Control device for preparing a continuous product
    US4689187A|1987-08-25|Method for shaping plastic materials
    CN1066022A|1992-11-11|The equipment of constraining rotating tube of material and method
    JPH0538260A|1993-02-19|Extrusion-molding apparatus for sheet material
    Kalyon et al.1997|An adjustable gap in-line rheometer
    SU1224673A1|1986-04-15|Method of determining rheological parameters of plastic materials
    JP2731694B2|1998-03-25|Extrusion molding method for cylindrical molded products
    同族专利:
    公开号 | 公开日
    GB2141844B|1986-04-30|
    GB2141844A|1985-01-03|
    GB8322513D0|1983-09-21|
    FR2545034A1|1984-11-02|
    IT1164304B|1987-04-08|
    IT8321956D0|1983-07-06|
    BR8304039A|1985-01-22|
    JPS59199230A|1984-11-12|
    US4515738A|1985-05-07|
    DE3315184C1|1984-06-28|
    FR2545034B1|1988-04-22|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE3315184A|DE3315184C1|1983-04-27|1983-04-27|Method and extrusion device for monitoring the production of profiles from one or more rubber or plastic mixtures|
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