Extruder Control Method, Device, System and Extruder

Abstract

The present application provides an extrusion machine control method, device, system and extrusion machine. The control method includes: detecting the production outer diameter of a target cable in real time through an outer diameter acquisition device; comparing the production outer diameter with the standard outer diameter range in real time; when the production outer diameter is less than the lower limit value of the standard outer diameter range, increasing the rotational speed value of the extrusion screw of the extrusion machine; when the production outer diameter is greater than the upper limit value of the standard outer diameter range, decreasing the rotational speed value of the extrusion screw; when the production outer diameter is greater than or equal to the lower limit value of the standard outer diameter range and less than or equal to the lower limit value of the standard outer diameter range, keeping the rotational speed value of the extrusion screw unchanged; controlling the extrusion screw to extrude materials according to the rotational speed value. By comparing the production outer diameter of the target cable with the standard outer diameter range in real time and then dynamically adjusting the rotational speed value of the screw according to the comparison result, the present application changes the material extrusion speed of the extrusion machine, so that the production outer diameter of the target cable meets the standard outer diameter range.

Description

Technical Field

[0001] This application belongs to the technical field of cable processing, and particularly relates to the field of extruders for processing cable insulation layers and / or sheath layers. Specifically, this application relates to a method, device, system, and extruder for controlling an extruder. Background Art

[0002] As an important transmission device for electric energy or signals, a cable mainly consists of a conductor for transmitting electric energy or signals and an outer insulation layer and sheath layer. Among them, the insulation layer has good insulation performance, and the sheath layer protects the inside of the cable from mechanical damage. Therefore, the production of the insulation layer and sheath layer is crucial for the performance of the cable when it leaves the factory. An extruder is a production device for manufacturing the insulation layer and sheath layer for a conductor or inner core during the cable manufacturing process, mainly including: a wire pay-off device, a straightening device, a preheating device, and an extruder, etc. Among them, the extruder is used to fully plasticize and uniformly mix plastics, and form them on the surface of the conductor or inner core through a die, thereby forming the insulation layer or sheath layer of the cable.

[0003] Currently, when producing the insulation layer and sheath layer of a cable through an extruder, it is necessary to manually adjust parameters to control the extrusion amount, and the control level is affected by the operator. Considering that the industry standards for different cables have certain lower limit requirements for the thickness of the insulation layer and sheath layer, if the thickness is insufficient, the insulation and protection performance will be reduced. Therefore, some operators will increase the extrusion amount to increase the material thickness to meet the standards.

[0004] However, the industry standards also have certain upper limit requirements for the thickness of the insulation layer and sheath layer of the cable. If the thickness is too thick, it will not only cause poor heat dissipation performance of the cable, affect the cable life, but also result in waste of extrusion materials and increase the extrusion cost. Summary of the Invention

[0005] In view of the above technical problems, this application aims to provide a method, device, system, and extruder for controlling an extruder, which can reasonably control the production outer diameter of the cable and reduce the extrusion production cost while ensuring that the extrusion thickness of the insulation layer and sheath layer meets the industry standards.

[0006] To achieve the above invention purpose, in the first aspect, this application provides a method for controlling an extruder, which is applied to the controller of the extruder, and includes:

[0007] Real-time detect the production outer diameter of the target cable through the outer diameter acquisition device of the extruder;

[0008] Compare the production outer diameter with the standard outer diameter range in real time;

[0009] When the production outer diameter is less than the lower limit value of the standard outer diameter range, increase the rotation speed value of the extrusion screw of the extruder;

[0010] When the production outer diameter is greater than the upper limit value of the standard outer diameter range, the rotational speed value of the extrusion screw is reduced;

[0011] When the production outer diameter is greater than or equal to the lower limit value of the standard outer diameter range and less than or equal to the upper limit value of the standard outer diameter range, the rotational speed value of the extrusion screw remains unchanged;

[0012] Control the extrusion screw to extrude the material according to the rotational speed value.

[0013] In a possible implementation manner, increasing the rotational speed value of the extrusion screw of the extruder includes:

[0014] Increase the rotational speed value of the extrusion screw in a manner of gradually decreasing acceleration.

[0015] In a possible implementation manner, increasing the rotational speed value of the extrusion screw in a manner of gradually decreasing acceleration includes:

[0016] Obtain the rotational speed value of the extrusion screw in real time;

[0017] Determine the outer diameter error between the production outer diameter of the target cable and the lower limit value of the standard outer diameter range;

[0018] Determine the acceleration in real time according to the rotational speed value and the outer diameter error;

[0019] Update the rotational speed value of the extrusion screw in real time according to the acceleration.

[0020] In a possible implementation manner, reducing the rotational speed value of the extrusion screw includes:

[0021] Reduce the rotational speed value of the extrusion screw in a manner of gradually decreasing deceleration.

[0022] In a possible implementation manner, reducing the rotational speed value of the extrusion screw in a manner of gradually decreasing deceleration includes:

[0023] Obtain the rotational speed value of the extrusion screw in real time;

[0024] Determine the outer diameter error between the production outer diameter of the target cable and the upper limit value of the standard outer diameter range;

[0025] Determine the deceleration in real time according to the rotational speed value and the outer diameter error;

[0026] Update the rotational speed value of the extrusion screw in real time according to the deceleration.

[0027] In a possible implementation manner, the standard outer diameter range is obtained according to the following method, including:

[0028] Obtain the first outer diameter of the target cable before extrusion;

[0029] Obtain the extrusion thickness of the extrusion material on the target cable;

[0030] Determine the standard outer diameter range of the target cable according to the first outer diameter, the extrusion thickness, and the standard error range corresponding to the extrusion thickness.

[0031] In a possible implementation manner, the real-time detection of the production outer diameter of the target cable by the outer diameter acquisition device of the extruder includes:

[0032] Real-time obtain the second outer diameter of the target cable in the length extension direction through the outer diameter acquisition device;

[0033] Real-time obtain the third outer diameter of the target cable in the cross-sectional direction through the outer diameter acquisition device;

[0034] Determine the production outer diameter of the target cable in real time according to the second outer diameter and the third outer diameter.

[0035] In a second aspect, the present application further provides an extruder control device, including:

[0036] An acquisition module, configured to real-time detect the production outer diameter of the target cable through the outer diameter acquisition device of the extruder;

[0037] A comparison module, configured to compare the production outer diameter with the standard outer diameter range in real time;

[0038] A rotation speed determination module, configured to increase the rotation speed value of the extrusion screw of the extruder when the production outer diameter is less than the lower limit value of the standard outer diameter range; decrease the rotation speed value of the extrusion screw when the production outer diameter is greater than the upper limit value of the standard outer diameter range; and keep the rotation speed value of the extrusion screw unchanged when the production outer diameter is greater than or equal to the lower limit value of the standard outer diameter range and less than or equal to the lower limit value of the standard outer diameter range;

[0039] A control module, configured to control the extrusion screw to extrude materials according to the rotation speed value.

[0040] In a third aspect, the present application further provides an extruder control system, including:

[0041] At least one processor, and a memory communicatively connected to the at least one processor;

[0042] The memory stores computer execution instructions;

[0043] The processor executes the computer execution instructions stored in the memory, and is used to implement the method in any possible implementation manner of the first aspect above.

[0044] Fourthly, the present application further provides an extruder, including the extruder control system in the possible implementation manners of the third aspect above.

[0045] The extruder control method, device, system and extruder provided by the present application. The control method first uses the outer diameter acquisition device of the extruder to detect the production outer diameter of the target cable in real time, and then compares the production outer diameter with the standard outer diameter range in real time. When the production outer diameter is less than the lower limit value of the standard outer diameter range, the rotation speed value of the extrusion screw is increased. When the production outer diameter is greater than the upper limit value of the standard outer diameter range, the rotation speed value of the extrusion screw is decreased until the production outer diameter is greater than or equal to the lower limit value of the standard outer diameter range and less than or equal to the lower limit value of the standard outer diameter range, and then the rotation speed value of the extrusion screw is kept unchanged. Finally, the extrusion screw is controlled to extrude the material according to the rotation speed value. By comparing the real-time collected production outer diameter of the target cable with the standard outer diameter range, and then dynamically adjusting the rotation speed value of the screw according to different situations where the production outer diameter deviates from the standard outer diameter range, the material extrusion speed of the extruder is changed, so that the production outer diameter of the target cable after extrusion meets the standard outer diameter range, ensuring the production quality of the cable. Description of the Drawings

[0046] The drawings here are incorporated into the specification and form a part of this specification, showing the embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0047] Figure 1 It is a schematic structural diagram of an extruder applied to an extrusion system provided by an embodiment of the present application;

[0048] Figure 2 is Figure 1 the control schematic diagram in the shown extruder;

[0049] Figure 3 It is a flowchart of an extruder control method provided by an embodiment of the present application;

[0050] Figure 4 It is a flowchart of an extruder control method provided by another embodiment of the present application;

[0051] Figure 5 It is a flowchart of an extruder control method provided by another embodiment of the present application;

[0052] Figure 6 It is a schematic structural diagram of an extruder control device provided by an embodiment of the present application;

[0053] Figure 7 It is a hardware structure diagram of an extruder control system provided by an embodiment of the present application.

[0054] Through the above-mentioned accompanying drawings, specific embodiments of the present application have been shown, and will be described in more detail hereinafter. These drawings and the written description are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed Description of the Embodiments

[0055] Here, the exemplary embodiments will be described in detail, and the examples are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numerals in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0056] In the embodiments of the present application, terms such as "first" and "second" are used to distinguish identical or similar items with basically the same functions and effects. Those skilled in the art can understand that the terms "first" and "second" do not limit the quantity and execution order, and the terms "first" and "second" do not necessarily mean different.

[0057] It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner. In the embodiments of the present application, "at least one" means one or more, and "a plurality" means two or more.

[0058] It should be noted that in the embodiments of the present application, "when..." can be an instant when a certain situation occurs, or a period of time after a certain situation occurs. The embodiments of the present application do not make specific limitations in this regard.

[0059] To facilitate a clear description of the technical solutions of the embodiments of the present application, the following briefly introduces some terms and technologies involved in the embodiments of the present application:

[0060] The extruder is a production device for manufacturing the insulating layer and sheath layer for conductors or inner cores during the cable manufacturing process. It mainly includes: a wire pay-off device, a straightening device, a preheating device, a cooling device, a traction device, a length counter, a spark tester, a wire take-up device, and an extruder, etc. Among them, the extruder is used to fully plasticize and uniformly mix the plastic, and form it on the surface of the conductor or inner core through the die, so as to form the insulating layer or sheath layer of the cable. Currently, when producing the insulating layer and sheath layer of the cable, it is necessary to manually adjust the parameters to control the extrusion amount, and the control level is affected by the operator. Considering that the industry standards for different cables have certain lower limit requirements for the thickness of the insulating layer and sheath layer, if the thickness is insufficient, the insulation and protection performance will be reduced. Therefore, some operators will increase the extrusion amount to increase the material thickness to meet the standards. However, the industry standards also have certain upper limit requirements for the thickness of the insulating layer and sheath layer of the cable. If the thickness is too thick, it will not only cause poor heat dissipation performance of the cable, affect the cable life, but also cause waste of extrusion materials and increase the extrusion cost.

[0061] To solve the above problems, the present application provides an extruder control method, device, system and extruder. The control method first uses the outer diameter acquisition device of the extruder to detect the production outer diameter of the target cable in real time, and then compares the production outer diameter with the standard outer diameter range in real time. When the production outer diameter is less than the lower limit value of the standard outer diameter range, the rotation speed value of the extrusion screw is increased. When the production outer diameter is greater than the upper limit value of the standard outer diameter range, the rotation speed value of the extrusion screw is decreased until the production outer diameter is greater than or equal to the lower limit value of the standard outer diameter range and less than or equal to the lower limit value of the standard outer diameter range, and then the rotation speed value of the extrusion screw is kept unchanged. Finally, the extrusion screw is controlled to extrude the material according to the rotation speed value. By comparing the production outer diameter of the target cable collected in real time with the standard outer diameter range, and then dynamically adjusting the rotation speed value of the screw according to the deviation of the production outer diameter from the standard outer diameter range, the material extrusion speed of the extruder is changed, so that the production outer diameter of the target cable meets the standard outer diameter range, ensuring the production quality of the cable.

[0062] Figure 1 FIG. is a schematic structural diagram of an extruder applied to an extrusion system provided by an embodiment of the present application. Figure 2 For Figure 1 shown in the control schematic diagram of the extruder. As Figure 1 、 Figure 2 shown, an extruder 110 includes: an outer diameter acquisition device 111, a controller 112, a transmission module 113, a feeding device 114, an extrusion screw 115, and a head 116.

[0063] Among them, the main components of the extruder will be introduced below.

[0064] The outer diameter acquisition device may include a diameter gauge and a camera. The diameter gauge can directly measure the production outer diameter of the production line cable, and the camera can collect images of the production line cable and obtain the production outer diameter through image processing. The diameter gauge or the camera is preferably arranged at a position before the take-up device where the target cable enters the extrusion system, and sends the measured production outer diameter to the controller.

[0065] The controller 112 is the control core of the extruder. The controller 112 is arranged in the control cabinet 120. By inputting corresponding parameters through the operation interface 121 on the control cabinet 120, the standard outer diameter range of the production line cable can be directly or indirectly obtained. The controller 112 receives the production outer diameter parameter and the standard outer diameter range, processes them to obtain the rotational speed value applied to the extrusion screw, and sends the rotational speed value to the drive module 113, so that the drive module 113 controls the extrusion screw to extrude materials at the rotational speed value to form the insulating layer or sheath layer of the cable.

[0066] The drive module 113 is mainly composed of a motor, a reduction box, bearings, etc. During the plastic extrusion process, the drive module is used to control the stability of the rotational speed of the extrusion screw 115, and it cannot change with the change of the load of the extrusion screw 115, so as to ensure the uniform quality of the cable products. However, in order to enable the extruder to extrude different plastic thicknesses or different cable products, the extrusion screw 115 needs to be variable-speed. At this time, the drive module 113 generally adopts devices such as an alternating current commutator motor and a direct current motor to achieve stepless speed change. Generally, the rotational speed of the extrusion screw is 10 - 100 revolutions per minute.

[0067] The feeding device 114 usually uses a conical feeding hopper. A barrel is arranged above the hopper, and its overall volume is required to provide at least one hour's plastic consumption. There is a cut-off device at the bottom of the hopper to adjust and cut off the material flow. A sight hole and a calibration and metering device are installed on the side of the hopper. Some hoppers may also be equipped with a pressure relief device or a heating device to prevent the raw material from absorbing moisture from the air, or some barrels are also equipped with a stirrer to automatically feed or add materials for it.

[0068] The extrusion screw 115 is the heart of the extruder and a key component of the extruder. By rotating the extrusion screw 115, an extremely high pressure effect is generated on the plastic. The plastic can move, be pressurized, and obtain some heat from friction in the feeding device 114. The plastic is mixed and plasticized during the movement. When the viscous molten state melt is extruded and flows through the die, it obtains the required shape and is formed.

[0069] The head 116 is generally integrally provided with the die or separately provided. The function of the head 116 is to convert the rotating plastic melt into a parallel linear motion, further plasticize the plastic evenly, and guide the melt into the die evenly and smoothly. It also imparts the necessary forming pressure to make the plastic easy to form and the obtained product dense. The die is a channel with a certain cross-sectional shape. When the plastic melt flows in the die, it obtains the required shape and is cooled and hardened by the shaping device and cooling system outside the die to form.

[0070] Figure 3 The flowchart of the extrusion machine control method provided by an embodiment of the present application is as follows. As Figure 3 shown, an extrusion machine control method is applied to the Figure 1 and Figure 2 controller of the extrusion machine shown, and may include the following steps:

[0071] S310: Real-time detect the production outer diameter of the target cable through the outer diameter acquisition device of the extrusion machine.

[0072] In the embodiment of the present application, in order to control the production quality of the target cable, it is necessary to ensure that the production outer diameter of the target cable meets the requirements. Therefore, in this embodiment, the outer diameter acquisition device cooperating with the extrusion machine is used to real-time detect the production outer diameter of the target cable during the production process. Here, the production outer diameter is determined by the outer diameter of the target cable before extrusion and the thickness formed by the extrusion material on the surface. For example, the outer diameter before extrusion can be the inner core conductor diameter of the wire before the insulation layer is extruded, or the shielding layer diameter of the cable wrapping several wires before the sheath layer is extruded. In this embodiment, the production outer diameter of the target cable is measured as a whole.

[0073] In one implementation, the production outer diameter of the target cable directly measured by the diameter measuring instrument can be received.

[0074] In another implementation, the production outer diameter of the target cable collected and sent by the camera can be received. The camera collects the image of the target cable and processes the image of the target cable to determine the production outer diameter.

[0075] In a specific embodiment, real-time detecting the production outer diameter of the target cable through the outer diameter acquisition device of the extrusion machine may further include the following steps:

[0076] S311: Real-time obtain the second outer diameter of the target cable in the length extension direction through the outer diameter acquisition device.

[0077] In the embodiment of the present application, the outer diameter acquisition device can real-time detect the second outer diameter of the target cable in the length extension direction after the extrusion molding of the target cable is stable. For example, the target cable can be passed through the diameter measuring instrument to real-time detect the second outer diameter.

[0078] S312: Obtain the third outer diameter of the target cable in the cross-sectional direction in real time through the outer diameter acquisition device.

[0079] In the embodiment of the present application, the outer diameter acquisition device can be the third outer diameter in the cross-sectional direction after the target cable is stably extruded and formed. Specifically, the outer diameter acquisition device can use a camera set in the tangential direction of the target cable and the take-up device, so that the camera can collect the cross-sectional projected area of the target cable to determine the third outer diameter.

[0080] S313: Determine the production outer diameter of the target cable in real time according to the second outer diameter and the third outer diameter.

[0081] In one implementation, the production outer diameter of the target cable can be determined in real time by taking the average of the second outer diameter and the third outer diameter, which can reduce the measurement error existing when only one direction is detected. If the relative error between the second outer diameter and the third outer diameter is large, then one of the measurement results may be inaccurate, and at this time, the production equipment needs to be adjusted according to the actual situation.

[0082] In another implementation, the second outer diameter or the third outer diameter can also be taken as the production outer diameter of the target cable, which can reduce costs to a certain extent, and at this time, step S312 or S313 can be omitted.

[0083] S320: Compare the production outer diameter with the standard outer diameter range in real time.

[0084] In the embodiment of the present application, in order to check whether the production outer diameter of the target cable meets the standard outer diameter range, the production outer diameter needs to be compared with the standard outer diameter range.

[0085] In a specific implementation, the standard outer diameter range is obtained according to the following method, including the following steps:

[0086] S321: Obtain the first outer diameter of the target cable before extrusion.

[0087] In the embodiment of the present application, the first outer diameter here can be the conductor diameter of the wire before injection molding, which is determined by the upstream manufacturer or the products in the previous production link.

[0088] S322: Obtain the extrusion thickness of the extrusion material on the target cable.

[0089] In the embodiment of the present application, the extrusion thickness can be determined according to the industry standard of the cable product. Generally speaking, the larger the first outer diameter, the greater the extrusion thickness required for the cable.

[0090] In the industry standard, different wires or cables have different requirements for extrusion thickness. Taking a 10kV cable as an example, the extrusion thickness requirement for its insulating layer is 5mm.

[0091] S323: Determine the standard outer diameter range of the target cable according to the first outer diameter, the extrusion thickness, and the standard error range corresponding to the extrusion thickness.

[0092] In one implementation, assume that the first outer diameter of the target cable before extrusion is , the extrusion thickness is , and the standard error range corresponding to the extrusion thickness can be taken as ±5%. Here, the lower deviation of the standard error range is , and the upper deviation is , so the standard error range is . At this time, the lower limit value of the standard outer diameter range of the target cable is , and the upper limit value is . The following gives specific embodiments for illustration:

[0093] For example, the first outer diameter of the cable before extrusion is 15 mm, the extrusion thickness is 2.5 mm, the lower deviation is 0.1 mm, and the upper deviation is 0.3 mm. That is to say, the standard error range is -0.1 mm to 0.3 mm. Then, the lower limit value of the standard outer diameter range of the target cable is 19.8 mm, and the upper limit value is 20.6 mm. At this time, the standard outer diameter range of the target cable is 19.8 mm to 20.6 mm.

[0094] In another implementation, the standard outer diameter range can also be determined by directly inputting the upper and lower limits of the outer diameter of the target cable after manual calculation.

[0095] When the controller obtains the standard outer diameter range, it can adjust the change of the extrusion thickness according to the production outer diameter detected in real time to make it meet the industry standard.

[0096] S330: When the production outer diameter is less than the lower limit value of the standard outer diameter range, increase the rotation speed value of the extrusion screw of the extruder; when the production outer diameter is greater than the upper limit value of the standard outer diameter range, decrease the rotation speed value of the extrusion screw; when the production outer diameter is greater than or equal to the lower limit value of the standard outer diameter range and less than or equal to the lower limit value of the standard outer diameter range, keep the rotation speed value of the extrusion screw unchanged.

[0097] In the embodiments of the present application, through the production outer diameter d1 obtained by real-time detection in step S310 and then compared through S320, the size relationship between the production outer diameter and the standard outer diameter range can be obtained.

[0098] Assume that the lower limit value of the standard outer diameter range is d2, and the upper limit value of the standard outer diameter range is d3.

[0099] If d1 < d2, it indicates that the production outer diameter of the current target cable is too small and does not meet the standard outer diameter range. At this time, it is necessary to increase the rotational speed value of the extrusion screw of the extruder, thereby increasing the extrusion speed of the plastic and correspondingly increasing the extrusion thickness of the insulating layer. As the extrusion thickness increases, the production outer diameter d1 detected in real time will also increase. When d1 continuously increases to meet the standard outer diameter range, that is, d2 ≤ d1 ≤ d3, keep the adjustment of the rotational speed value of the extrusion screw unchanged.

[0100] If d1 > d2, it indicates that the production outer diameter of the current target cable is too large and does not meet the standard outer diameter range. At this time, it is necessary to decrease the rotational speed value of the extrusion screw of the extruder, thereby reducing the extrusion speed of the plastic and correspondingly reducing the extrusion thickness of the insulating layer. As the extrusion thickness decreases, the production outer diameter d1 detected in real time will also decrease. When d1 continuously decreases to meet the standard outer diameter range, that is, d2 ≤ d1 ≤ d3, keep the adjustment of the rotational speed value of the extrusion screw unchanged.

[0101] If the production outer diameter d1 detected in real time initially meets the standard outer diameter range, also keep the adjustment of the rotational speed value of the extrusion screw unchanged.

[0102] During the extrusion process, even if the rotational speed value of the extrusion screw remains unchanged, the extrusion speed will change due to factors such as the working state of the equipment, the ambient temperature, and the extrusion material. If it is detected in real time during the production process that the production outer diameter deviates from the standard outer diameter range, the rotational speed value of the extrusion screw can be intelligently adjusted by the above method, so that the production outer diameter of the target cable meets the standard outer diameter range.

[0103] S340: Control the extrusion screw to extrude the material according to the rotational speed value.

[0104] In the embodiment of the present application, after the controller obtains the rotational speed value of the extrusion screw according to step S330, it can send the rotational speed value to the transmission module, and the transmission module controls the extrusion screw to work according to the rotational speed value, thereby producing the target cable.

[0105] In the above embodiment, the control method compares the production outer diameter of the target cable collected in real time with the standard outer diameter range, and then dynamically adjusts the rotational speed value of the screw according to different situations where the production outer diameter deviates from the standard outer diameter range, thereby changing the extrusion speed of the extruder, so that the production outer diameter of the target cable is adjusted to meet the standard outer diameter range, ensuring that the extrusion thickness meets the industry standard, improving the production quality of the cable, and reducing the production cost.

[0106] Figure 4 The flowchart of the extrusion machine control method provided for another embodiment of the present application. This embodiment is based on Figure 3 the embodiment shown, and further optimizes the specific process of increasing and decreasing the rotational speed value of the extrusion screw. As Figure 4As shown, the extrusion machine control method provided in this embodiment may include the following steps:

[0107] S410: Real-time detect the production outer diameter of the target cable through the outer diameter acquisition device of the extrusion machine.

[0108] In the embodiment of the present application, the specific process can refer to Figure 3 the description of step S310 in the shown embodiment, which will not be elaborated here.

[0109] S420: Compare the production outer diameter with the standard outer diameter range in real time.

[0110] In the embodiment of the present application, the specific process can refer to Figure 3 the description of S320 in the embodiment, which will not be elaborated here.

[0111] S430: When the production outer diameter is less than the lower limit value of the standard outer diameter range, increase the rotational speed value of the extrusion screw in a manner of gradually decreasing acceleration; when the production outer diameter is greater than the upper limit value of the standard outer diameter range, decrease the rotational speed value of the extrusion screw in a manner of gradually decreasing deceleration; when the production outer diameter is greater than or equal to the lower limit value of the standard outer diameter range and less than or equal to the lower limit value of the standard outer diameter range, keep the rotational speed value of the extrusion screw unchanged.

[0112] In the embodiment of the present application, when increasing or decreasing the rotational speed value of the extrusion screw, generally, it can be increased or decreased uniformly with acceleration or deceleration.

[0113] Taking the uniform acceleration increase as an example, when the rotational speed value of the extrusion screw increases uniformly from V0 to V1, the required time T is (V1 - V0) / a, where a is the acceleration and is a constant value. When the rotational speed value of the extrusion screw is V1, the production outer diameter is equal to the lower limit value of the standard outer diameter range at this time.

[0114] If the rotational speed value of the extrusion screw can be increased in a manner of gradually decreasing acceleration, for example, the acceleration of the rotational speed value is larger at the beginning (significantly greater than a), and then the acceleration gradually decreases, and the speed increase of the rotational speed value slows down. This way can increase the rotational speed value from V0 to V1 at a faster time. In this way, the too low extrusion thickness can be adjusted to the appropriate extrusion thickness faster, and at the end, the rotational speed value accelerates and changes more smoothly to the stable rotational speed value.

[0115] Similarly, for the case where the rotational speed value of the extrusion screw needs to be decreased, control the rotational speed value of the extrusion screw to decrease in a manner of gradually decreasing deceleration. The specific analysis process can refer to the description of the increase of the rotational speed value above, which will not be elaborated here.

[0116] S440: Control the extrusion screw to extrude the material according to the rotational speed value.

[0117] In the embodiment of the present application, the specific process can refer toFigure 3 The description of step S310 in the illustrated embodiment will not be repeated here.

[0118] In the above-mentioned embodiment, when the production outer diameter is less than the lower limit value of the standard outer diameter range, the rotation speed value of the extrusion screw is controlled to increase in a manner of gradually decreasing acceleration; when the production outer diameter is greater than the upper limit value of the standard outer diameter range, the rotation speed value of the extrusion screw is controlled to decrease in a manner of gradually decreasing deceleration, so as to make the rotation speed value of the extrusion screw reach a reasonable speed, which can not only make the production outer diameter meet the standard outer diameter range, but also quickly adjust the deviated production outer diameter into the standard outer diameter range, saving time adjustment cost and material cost.

[0119] Figure 5 The flowchart of the extrusion machine control method provided by another embodiment of the present application. This embodiment is based on Figure 4 the illustrated embodiment, and mainly improves the acceleration control of the rotation speed value of the extrusion screw in the extrusion machine. As Figure 5 shown, the extrusion machine control method provided by this embodiment may include the following steps:

[0120] S510: Real-time detect the production outer diameter of the target cable through the outer diameter acquisition device of the extrusion machine.

[0121] In the embodiment of the present application, the specific process can refer to Figure 3 the description of S310 in the embodiment, which will not be repeated here.

[0122] S520: Compare the production outer diameter with the standard outer diameter range in real time.

[0123] In the embodiment of the present application, the specific process can refer to Figure 3 the description of S320 in the embodiment, which will not be repeated here.

[0124] In Figure 4 the illustrated embodiment, even if the rotation speed value of the extrusion screw can increase in a manner of gradually decreasing acceleration or decrease in a manner of gradually decreasing deceleration, there are still various acceleration or deceleration methods, especially if the change rate of the acceleration is slow, there is still a problem that the speed change time is not fast enough. Therefore, in this embodiment, the acceleration or deceleration is adjusted through steps S530 to S560. In steps S530 to S560, the adjustment of the rotation speed value of the extrusion screw is described by taking the case where the real-time detected production outer diameter is less than the lower limit value of the standard outer diameter range as an example.

[0125] S530: When the production outer diameter is less than the lower limit value of the standard outer diameter range, obtain the rotation speed value of the extrusion screw in real time.

[0126] In the embodiments of the present application, in order to adjust the rotation speed value of the extrusion screw, it is necessary to collect the rotation speed value of the extrusion screw in real time, and this rotation speed value serves as the initial speed for each adjustment.

[0127] S540: Determine the outer diameter error between the production outer diameter of the target cable and the lower limit value of the standard outer diameter range.

[0128] In the embodiments of the present application, first, determine the gap between the production outer diameter of the target cable detected in real time and the lower limit value of the standard outer diameter range, that is, the outer diameter error.

[0129] S550: Determine the acceleration in real time according to the rotation speed value and the outer diameter error.

[0130] In the embodiments of the present application, it can be understood that when the outer diameter error is larger, the current speed can be increased to a reasonable speed faster, and the acceleration in the early stage should be larger. When the outer diameter error is smaller, the acceleration should be smaller. Until the production outer diameter reaches the lower limit value of the standard outer diameter range, the acceleration should be 0 at this time.

[0131] Assume that the outer diameter error detected in real time is x, and the rotation speed value needs to be increased from the current rotation speed value V0 to V1. Then V1 = V0 + At, and the acceleration A can change according to the following rule: A = f(x) (x ≥ 0), where A is an increasing function of the outer diameter error x, and when x is equal to 0, the acceleration is 0, and the rotation speed value increases from V0 to V1.

[0132] S560: Update the rotation speed value of the extrusion screw in real time according to the acceleration.

[0133] In this embodiment, the rotation speed value of the extrusion screw is updated in real time according to the acceleration change function obtained in step S550. It can be seen that when the outer diameter error x is larger, the acceleration is larger. When the outer diameter error x is 0, the rotation speed value just accelerates to V1, and at this time, the rotation speed value remains unchanged.

[0134] For the case where the production outer diameter detected in real time is greater than the lower limit value of the standard outer diameter range, the rotation speed value of the extrusion screw can be adjusted with reference to steps S530 - S560, specifically including:

[0135] Obtain the rotation speed value of the extrusion screw in real time; determine the outer diameter error between the production outer diameter of the target cable and the upper limit value of the standard outer diameter range; determine the deceleration in real time according to the rotation speed value and the outer diameter error; update the rotation speed value of the extrusion screw in real time according to the deceleration.

[0136] S570: When the production outer diameter is greater than or equal to the lower limit value of the standard outer diameter range and less than or equal to the lower limit value of the standard outer diameter range, keep the rotation speed value of the extrusion screw unchanged.

[0137] In the embodiment of the present application, when the rotational speed value is increased to V1 after the above steps, an outer diameter equal to the lower limit value of the standard outer diameter range is produced, and at this time, the controller controls the rotational speed value of the extrusion screw to be maintained at V1.

[0138] S580: Control the extrusion screw to extrude the material according to the rotational speed value.

[0139] In the embodiment of the present application, the specific process can refer to Figure 3 the description of S310 in the embodiment, which will not be elaborated here.

[0140] In the above embodiment, the acceleration is controlled through steps S530 - S560 to reasonably adjust the rotational speed value of the extrusion screw, so that the extrusion screw can reach a reasonable speed at a relatively stable speed. At this time, at this reasonable speed, the production outer diameter of the target cable can meet the standard outer diameter range. Among them, when the rotational speed value of the extrusion screw reaches the reasonable speed value, the rotational speed acceleration of the extrusion screw is just zero.

[0141] Figure 6 It is a schematic structural diagram of an extrusion machine control device provided by an embodiment of the present application, and this device can be in the form of software and / or hardware. Refer to Figure 1 and Figure 2 , the extrusion machine control device includes: a collection module 601, a comparison module 602, a rotational speed determination module 603, and a control module 604.

[0142] The collection module 601 is used to detect the production outer diameter of the target cable in real time through the outer diameter collection device of the extrusion machine.

[0143] The comparison module 602 is used to compare the production outer diameter with the standard outer diameter range in real time.

[0144] The rotational speed determination module 603 is used to increase the rotational speed value of the extrusion screw of the extrusion machine when the production outer diameter is less than the lower limit value of the standard outer diameter range; decrease the rotational speed value of the extrusion screw when the production outer diameter is greater than the upper limit value of the standard outer diameter range; and keep the rotational speed value of the extrusion screw unchanged when the production outer diameter is greater than or equal to the lower limit value of the standard outer diameter range and less than or equal to the lower limit value of the standard outer diameter range.

[0145] The control module 604 is used to control the extrusion screw to produce the target cable according to the rotational speed value.

[0146] In some embodiments, the rotational speed determination module 603 is specifically used to increase the rotational speed value of the extrusion screw in a manner that the acceleration gradually decreases.

[0147] In some embodiments, the rotational speed determination module 603 is specifically configured to: obtain the rotational speed value of the extrusion screw in real time; determine the outer diameter error between the production outer diameter of the target cable and the lower limit value of the standard outer diameter range; determine the acceleration in real time according to the rotational speed value and the outer diameter error; and update the rotational speed value of the extrusion screw in real time according to the acceleration.

[0148] In some embodiments, the rotational speed determination module 603 is specifically configured to reduce the rotational speed value of the extrusion screw in a manner of gradually decreasing deceleration.

[0149] In some embodiments, the rotational speed determination module 603 is specifically configured to: obtain the rotational speed value of the extrusion screw in real time; determine the outer diameter error between the production outer diameter of the target cable and the upper limit value of the standard outer diameter range; determine the deceleration in real time according to the rotational speed value and the outer diameter error; and update the rotational speed value of the extrusion screw in real time according to the deceleration.

[0150] In some embodiments, the extruder control device further includes: an acquisition module, configured to acquire the first outer diameter of the target cable before extrusion; acquire the extrusion thickness of the extrusion material on the target cable; and determine the standard outer diameter range of the target cable according to the first outer diameter, the extrusion thickness, and the standard error range corresponding to the extrusion thickness.

[0151] In some embodiments, the acquisition module 601 is specifically configured to: obtain the second outer diameter of the target cable in the length extension direction in real time through an outer diameter acquisition device; obtain the third outer diameter of the target cable in the cross-section direction in real time through the outer diameter acquisition device; and determine the production outer diameter of the target cable in real time according to the second outer diameter and the third outer diameter.

[0152] Figure 7 This is a hardware structure diagram of an extruder control system provided by an embodiment of the present application. This embodiment provides an extruder control system, including: at least one processor 701, and a memory 702 communicatively connected to the at least one processor 701; the memory 702 stores computer-executable instructions; the processor 701 executes the computer-executable instructions stored in the memory 702 to implement the control method described in any of the foregoing embodiments.

[0153] Figure 7 The shown extruder control system further includes a communication interface 703 and a communication bus 704. Among them, the processor 701, the memory 702, and the communication interface 703 are connected to each other through the communication bus 704. The communication bus 704 can be divided into an address bus, a data bus, a control bus, etc. For the sake of simplicity of representation, Figure 7 only a thick line is used to represent the communication bus 704, but it does not mean that there is only one communication bus 704 or one type of communication bus 704. The processor 701 can also be called a controller, and there is no limitation on the name.

[0154] In the embodiment of the present application, the memory 702 stores instructions executable by at least one processor 701. By executing the instructions stored in the memory 702, the at least one processor 701 can execute the control method described above. The processor 701 can implement Figure 7 the functions of each module in the device shown.

[0155] Among them, the processor 701 is the control center of the device. It can connect various parts of the entire control device through various interfaces and lines. By running or executing the instructions stored in the memory 702 and calling the data stored in the memory 702, various functions of the device and process data, so as to monitor the device as a whole.

[0156] In a possible design, the processor 701 may include one or more processing units. The processor 701 may integrate an application processor and a modem processor. Among them, the application processor mainly processes the operating system, user interface, application programs, etc., and the modem processor mainly processes wireless communication. It can be understood that the above modem processor may not be integrated into the processor 701 either. In some embodiments, the processor 701 and the memory 702 may be implemented on the same chip or separately on independent chips.

[0157] The processor 701 may be a general-purpose processor, such as a central processing unit (CPU), a digital signal processor, an application-specific integrated circuit, a field programmable gate array, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the control method disclosed in combination with the embodiments of the present application can be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

[0158] The memory 702, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules. The memory 702 can include at least one type of storage medium. For example, it can include flash memory, hard disk, multimedia card, card-type memory, random access memory (RAM), static random access memory (SRAM), programmable read-only memory (PROM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), magnetic memory, magnetic disk, optical disc, etc. The memory 702 is any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory 702 in the embodiments of the present application can also be a circuit or any other device capable of implementing a storage function, for storing program instructions and / or data.

[0159] By programming the design of the processor 701, the code corresponding to the control method introduced in the foregoing embodiments can be solidified into the chip, so that the chip can execute Figure 3 the steps of the control method of the illustrated embodiment when running. How to program the design of the processor 701 is a well-known technology to those skilled in the art and will not be elaborated here.

[0160] The embodiments of the present application further provide an extruder, which includes an outer diameter acquisition device, a controller, a transmission module, a feeding device, an extrusion screw, a head, and the extrusion machine control system described in any of the foregoing embodiments. By using the extruder provided in the embodiments of the present application, the production outer diameter of the target cable can be collected in real time and compared with the standard outer diameter range, and then according to different situations where the production outer diameter deviates from the standard outer diameter range, the rotation speed value of the screw can be dynamically adjusted, so as to change the extrusion speed of the extruder, making the production outer diameter of the target cable meet the standard outer diameter range, ensuring the production quality of the cable and reducing the production cost.

[0161] The embodiments of the present application also provide a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the control method described in any of the previous embodiments. Therefore, details will not be repeated here. In addition, the beneficial effects of the same method will not be described again. For the technical details not disclosed in the embodiments of the computer storage medium involved in the present invention, please refer to the description of the method embodiments of the present invention.

[0162] In some possible implementation manners, various aspects of the control method provided by the present application can also be implemented in the form of a program product, which includes program code. When the program product runs on a device, the program code is used to cause the control device to execute the steps in the control method according to various exemplary implementation manners of the present application described above in this specification.

[0163] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories, CD-ROMs, optical memories, etc.) containing computer-usable program code.

[0164] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram can be implemented by computer program instructions, and the combination of flows and / or blocks in the flowchart and / or block diagram can also be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for implementing the specified function in one Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0165] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device, and the instruction device implements the specified function in one Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0166] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus, so that a series of operation steps are executed on the computer or other programmable apparatus to produce a computer-implemented process, thereby providing instructions for implementing the functions specified in one process or a plurality of processes and / or blocks Figure 1 one process or a plurality of processes and / or blocks Figure 1 steps for implementing the functions specified in one block or a plurality of blocks.

[0167] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims

1. A method for controlling an extruder, characterized in that, A controller applied to the extruder, comprising: Real-time detecting the production outer diameter of the target cable through an outer diameter acquisition device of the extruder; Comparing the production outer diameter with the standard outer diameter range in real time; When the production outer diameter is less than the lower limit value of the standard outer diameter range, increasing the rotational speed value of the extrusion screw of the extruder; When the production outer diameter is greater than the upper limit value of the standard outer diameter range, decreasing the rotational speed value of the extrusion screw; When the production outer diameter is greater than or equal to the lower limit value of the standard outer diameter range and less than or equal to the upper limit value of the standard outer diameter range, keeping the rotational speed value of the extrusion screw unchanged; Controlling the extrusion screw to extrude materials according to the rotational speed value; The increasing the rotational speed value of the extrusion screw of the extruder includes: Increasing the rotational speed value of the extrusion screw in a manner of gradually decreasing acceleration; The increasing the rotational speed value of the extrusion screw in a manner of gradually decreasing acceleration includes: Real-time obtaining the rotational speed value of the extrusion screw; Determining the outer diameter error between the production outer diameter of the target cable and the lower limit value of the standard outer diameter range; According to the rotational speed value and the outer diameter error, determining the acceleration in real time; According to the acceleration, updating the rotational speed value of the extrusion screw in real time.

2. The extruder control method according to claim 1, wherein The decreasing the rotational speed value of the extrusion screw includes: Decreasing the rotational speed value of the extrusion screw in a manner of gradually decreasing deceleration.

3. The extruder control method according to claim 2, characterized in that, The decreasing the rotational speed value of the extrusion screw in a manner of gradually decreasing deceleration includes: Real-time obtaining the rotational speed value of the extrusion screw; Determining the outer diameter error between the production outer diameter of the target cable and the upper limit value of the standard outer diameter range; According to the rotational speed value and the outer diameter error, determining the deceleration in real time; According to the deceleration, updating the rotational speed value of the extrusion screw in real time.

4. The extrusion machine control method according to claim 1, characterized in that, The standard outer diameter range is obtained according to the following manner, including: Obtaining the first outer diameter of the target cable before extrusion; Obtaining the extrusion thickness of the extrusion material on the target cable; Determining the standard outer diameter range of the target cable according to the first outer diameter, the extrusion thickness and the standard error range corresponding to the extrusion thickness.

5. The extrusion machine control method according to claim 1, characterized in that The real-time detecting the production outer diameter of the target cable through an outer diameter acquisition device of the extruder includes: Real-time obtaining the second outer diameter of the target cable in the length extension direction through the outer diameter acquisition device; Real-time obtaining the third outer diameter of the target cable in the cross-section direction through the outer diameter acquisition device; According to the second outer diameter and the third outer diameter, determining the production outer diameter of the target cable in real time.

6. An extruder control device, characterized in that, Including: An acquisition module, configured to real-time detect the production outer diameter of the target cable through an outer diameter acquisition device of the extruder; A comparison module, configured to compare the production outer diameter with the standard outer diameter range in real time; A rotational speed determination module, configured to increase the rotational speed value of the extrusion screw of the extruder when the production outer diameter is less than the lower limit value of the standard outer diameter range; decrease the rotational speed value of the extrusion screw when the production outer diameter is greater than the upper limit value of the standard outer diameter range; and keep the rotational speed value of the extrusion screw unchanged when the production outer diameter is greater than or equal to the lower limit value of the standard outer diameter range and less than or equal to the upper limit value of the standard outer diameter range; A control module, configured to control the extrusion screw to extrude materials according to the rotational speed value; The rotation speed determination module is specifically configured to increase the rotation speed value of the extrusion screw in a manner of gradually decreasing acceleration; The rotation speed determination module is further specifically configured to: obtain the rotation speed value of the extrusion screw in real time; determine the outer diameter error between the production outer diameter of the target cable and the lower limit value of the standard outer diameter range; determine the acceleration in real time according to the rotation speed value and the outer diameter error; and update the rotation speed value of the extrusion screw in real time according to the acceleration.

7. An extruder control system, characterized in that, Comprising: At least one processor, and a memory communicatively connected to the at least one processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the method according to any one of claims 1 to 5.

8. An extruder, characterized in that, Comprising the extruder control system according to claim 7.

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