阅读说明：本技术 一种挤出机的挤出控制系统 (Extrusion control system of extruder ) 是由 祁岳东 张飞 张文楸 王锡凯 王锡建 祁健家 于 2020-05-28 设计创作，主要内容包括：本发明公开了一种挤出机的挤出控制系统,主要涉及挤出机技术领域。包括：第一铁芯,所述第一铁芯上缠绕有超导线圈；第二铁芯,所述第二铁芯位于第一铁芯的后侧,所述第二铁芯上缠绕有初级线圈、次级线圈,所述初级线圈、次级线圈相互独立,且初级线圈、次级线圈的旋向相反；所述初级线圈连接有调频控制器,所述调频控制器上设有调频电位器、设定器；所述次级线圈连接有整流装置,所述整流装置的输出端设有运算放大器,所述运算放大器连接有变频器控制器。本发明的有益效果在于：能够自动测量挤出物的大小,能够自动控制挤出机的转速,能够提高生产效率,降低废品率,降低能耗。(The invention discloses an extrusion control system of an extruder, and mainly relates to the technical field of extruders. The method comprises the following steps: a first iron core on which a superconducting coil is wound; the second iron core is positioned at the rear side of the first iron core, a primary coil and a secondary coil are wound on the second iron core, the primary coil and the secondary coil are independent, and the rotation directions of the primary coil and the secondary coil are opposite; the primary coil is connected with a frequency modulation controller, and a frequency modulation potentiometer and a setter are arranged on the frequency modulation controller; the secondary coil is connected with a rectifying device, an operational amplifier is arranged at the output end of the rectifying device, and the operational amplifier is connected with a frequency converter controller. The invention has the beneficial effects that: the size of the extrudate can be automatically measured, the rotating speed of the extruder can be automatically controlled, the production efficiency can be improved, the rejection rate is reduced, and the energy consumption is reduced.)

1. An extrusion control system of an extruder, comprising:

the superconducting coil comprises a first iron core (1), wherein a superconducting coil (11) is wound on the first iron core (1);

the second iron core (2) is positioned at the rear side of the first iron core (1), a primary coil (21) and a secondary coil (22) are wound on the second iron core (2), the primary coil (21) and the secondary coil (22) are independent of each other, and the rotation directions of the primary coil (21) and the secondary coil (22) are opposite;

the primary coil (21) is connected with a frequency modulation controller (3), and a frequency modulation potentiometer (31) and a setter (32) are arranged on the frequency modulation controller (3);

the secondary coil (22) is connected with a rectifying device (33), an operational amplifier (34) is arranged at the output end of the rectifying device (33), and the operational amplifier (34) is connected with a frequency converter controller (35).

2. The extrusion control system of an extruder according to claim 1, wherein: and a liquid nitrogen inlet (12) is formed in the first iron core (1).

3. The extrusion control system of an extruder according to claim 1, wherein: the output end of the operational amplifier (34) is provided with an AD converter (36), the AD converter (36) is connected with a DA converter (37), and the output end of the DA converter (37) is connected with a frequency converter controller (35).

4. The extrusion control system of an extruder according to claim 3, wherein: the output of AD converter (36) is equipped with digital fiber signal converter (38), digital fiber signal converter's (38) output is connected with fiber digital signal converter (39), fiber digital signal converter's (39) output is connected with DA converter's (37) input.

Technical Field

The invention relates to the technical field of extruders, in particular to an extrusion control system of an extruder.

Background

At present, the extruder of some manual control ejection of compact, its size of extruding the material relies on the manual regulation host computer rotational speed to change the size of extruding the material mostly, and control process is more complicated, and is higher to the requirement of staff's skill, when extruding, if the adjustment is untimely or when adjusting the mistake, the waste product easily appears, leads to the rejection rate to increase, causes the waste of material and the large amount of consumption of electric energy.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides an extrusion control system of an extruder, which can automatically measure the size of an extruded material, automatically control the rotating speed of the extruder, improve the production efficiency, reduce the rejection rate and reduce the energy consumption.

In order to achieve the purpose, the invention is realized by the following technical scheme:

an extrusion control system of an extruder, comprising:

a first iron core on which a superconducting coil is wound;

the second iron core is positioned at the rear side of the first iron core, a primary coil and a secondary coil are wound on the second iron core, the primary coil and the secondary coil are independent, and the rotation directions of the primary coil and the secondary coil are opposite;

the primary coil is connected with a frequency modulation controller, and a frequency modulation potentiometer and a setter are arranged on the frequency modulation controller;

the secondary coil is connected with a rectifying device, an operational amplifier is arranged at the output end of the rectifying device, and the operational amplifier is connected with a frequency converter controller.

Preferably, the first iron core is provided with a liquid nitrogen inlet.

Preferably, the output end of the operational amplifier is provided with an AD converter, the AD converter is connected with a DA converter, and the output end of the DA converter is connected with the frequency converter controller.

Preferably, the output end of the AD converter is provided with a digital optical fiber signal converter, the output end of the digital optical fiber signal converter is connected with an optical fiber digital signal converter, and the output end of the optical fiber digital signal converter is connected with the input end of the DA converter.

Compared with the prior art, the invention has the beneficial effects that:

when the invention is used, the extruded material sequentially passes through the first iron core and the second iron core; after the superconducting coil is electrified, a strong superconducting magnetic field is generated on the first iron core, when an extruded material passes through the first iron core, the extruded material is magnetized, then when the magnetized extruded material passes through the second iron core, an induced current is generated on the secondary coil, the magnitude of the induced current changes along with the change of the material magnitude, when the material is increased, the induced current is high, and when the material is reduced, the induced current is small, so that feedback control can be performed, and according to the difference of the extruded material, the power supply frequency of the head end and the tail end of the primary coil is changed by adjusting a frequency modulation potentiometer, so that the size of the extruded material can be adjusted; the rectifying device converts alternating current generated on the secondary coil into direct current, the operational amplifier is used for comparing and amplifying signals, and the frequency converter controller is used for controlling and measuring the size of extruded materials of the extruder, so that the yield is greatly improved, the working efficiency is greatly improved, the labor intensity of workers is greatly reduced, the rejection rate is reduced, raw materials are saved, the whole control system works in a closed-loop mode, automatic feedback is realized, and the control precision is greatly improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of a connection structure of the first core;

fig. 3 is a schematic view of a connection structure of a second core;

fig. 4 is a schematic diagram of a connection structure of the primary coil;

fig. 5 is a schematic view of a connection structure of the secondary coil.

The reference numbers in the drawings:

1. a first iron core; 11. a superconducting coil; 12. a liquid nitrogen inlet; 2. a second iron core; 21. a primary coil; 22. a secondary coil; 3. a frequency modulation controller; 31. a frequency modulation potentiometer; 32. a setting device; 33. a rectifying device; 34. an operational amplifier; 35. a frequency converter controller; 36. an AD converter; 37. a DA converter; 38. a digital fiber optic signal converter; 39. a fiber optic digital signal converter; 41. a superconducting coil head end; 42. a superconducting coil end; 51. a primary coil head end; 52. a primary coil end; 61. a secondary coil head end; 62. a secondary coil end; 7. and extruding the materials.

Detailed Description

The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.