Cold pilger mill control system, method and device and readable storage medium

Abstract

According to the cold pilger mill control system provided by the embodiment of the invention, a pushing mechanism comprises an ejector rod device for pushing a blank pipe, the ejector rod device is connected with a chain wheel gear, and the chain wheel gear is connected with a chain wheel encoder; a sensing device is further installed on the material pushing mechanism and installed at the position where the blank pipe reaches when the blank pipe is pushed in place by the material pushing mechanism. The method provided by the embodiment of the invention comprises the following steps: S10, acquiring a lathe bed length L of a feeding mechanism and a blank pipe length L3 of a blank pipe; s30, based on the length L of the lathe bed and the length L3 of the blank pipe, the position covering distance delta s2 of the feeding trolley is obtained through calculation; s50, after the blank pipe is pushed to the position through the pushing mechanism, the feeding trolley moves to the specific position of the feeding mechanism based on the position covering distance delta s2; and S70, automatically starting a host mechanism. According to the cold pilger mill control system and method, human intervention can be reduced, the continuous utilization rate of equipment is increased, and the yield is increased. The embodiment of the invention further provides a device and a readable storage medium.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to seamless steel pipe production control, and more particularly to a cold rolling mill control system, method, device and readable storage medium. Background Art

[0002] Seamless steel pipe is a common metallurgical metal product. Seamless steel pipe cold rolling technology has become the main method for the production and preparation of seamless steel pipes due to its high rolling precision, fast speed, large production capacity, high yield rate, and easy production organization and process technology adjustment.

[0003] The cold rolling tube mill is a mechanical equipment for cold rolling rough tubes, mainly used to produce seamless steel tubes. According to the different feeding methods of the equipment, it can be divided into fully automatic cold rolling tube mills, semi-automatic cold rolling tube mills and manual cold rolling tube mills. For the semi-automatic cold rolling tube mill, after the rough tube is pushed to the feeding bed, the feeding trolley needs to be manually moved to a specific position (this position is related to the length of the rough tube, and the corresponding position of each rough tube may be different), and then the main mechanism and the feeding mechanism can be manually started in sequence for the next rolling. In this process, the specific position to which the rough tube needs to be sent cannot be directly obtained, and manual operation intervention is required, which is not only labor-intensive, but also greatly reduces the continuous utilization rate of the equipment and affects the equipment output. Summary of the invention

[0004] The embodiments of the present disclosure provide a cold rolling mill control system and a cold rolling mill control method, device, and readable storage medium to at least partially solve the above-mentioned problems.

[0005] According to a first aspect of the present disclosure, a control system for a cold rolling mill is provided, comprising a pushing mechanism, a feeding mechanism and a main machine mechanism connected in sequence, the pushing mechanism pushes the blank tube to be processed to the feeding mechanism, the feeding mechanism feeds the blank tube to the main machine mechanism, the feeding mechanism comprises a feeding trolley for feeding the blank tube, and the main machine mechanism processes the blank tube, and is characterized in that the pushing mechanism comprises a push rod device for pushing the blank tube, the push rod device is connected to a sprocket gear, and the sprocket gear is connected to a sprocket encoder to record the distance traveled by the push rod device; the pushing mechanism is also equipped with a sensing device, and the sensing device is installed at the position reached by the blank tube when it is pushed into place by the pushing mechanism.

[0006] The cold rolling mill control system based on this embodiment can realize automatic control of the cold rolling process of the blank tube, and at the same time facilitate automatic acquisition of parameters such as the blank tube length, the pushing length, etc., to facilitate automatic control of the system.

[0007] According to a second aspect of the present disclosure, a control method for a cold rolling mill is provided, which automatically controls the cold rolling mill, comprising:

[0008] Obtaining a bed length L of the feeding mechanism and a blank tube length L3 of the blank tube;

[0009] Based on the bed length L and the blank tube length L3, the filling distance Δs2 of the feeding trolley is calculated;

[0010] When the blank tube is pushed into place by the pushing mechanism, the feeding trolley moves to a specific position of the feeding mechanism based on the filling distance Δs2;

[0011] The host mechanism starts automatically.

[0012] The cold rolling mill control method based on this embodiment can automatically obtain the replenishment distance, realize automatic control of the feeding trolley and automatic start-up of the main machine mechanism, reduce manual intervention, improve the continuous utilization rate of the equipment, and increase production.

[0013] According to a third aspect of the present disclosure, a control device for a cold rolling mill is provided.

[0014] According to a fourth aspect of the present disclosure, a computer-readable storage medium is also provided.

[0015] It can be seen that according to the control system and method of the cold rolling mill in the disclosed embodiment, a sprocket gear and a corresponding sprocket encoder connected to the push rod device on the pushing mechanism are installed to record the travel distance of the push rod device, and a sensing device is installed on the pushing mechanism to detect the pushing length. Based on this structure, after obtaining the length L of the feeding machine bed and the length L3 of the blank tube, the filling distance of the feeding trolley can be automatically calculated, and after the pushing mechanism pushes the material into place, the feeding trolley is automatically moved to a specific position based on the filling distance, and then the main machine mechanism is automatically started, thereby reducing the manual operation requirements of the production process, improving the continuous utilization rate of the equipment, and thus increasing the output.

[0016] According to the control system and control method of the cold rolling mill in the disclosed embodiment, a front limit sensor and a rear limit sensor are arranged on the feeding mechanism to automatically measure the moving distance difference of the feeding trolley between the two to obtain the bed length of the feeding mechanism, which is used for automatic calculation of the filling distance of the feeding trolley.

[0017] According to the control system and method of the cold rolling mill in the embodiment of the present disclosure, an external encoder of the host mechanism is also provided to record the current actual position of the host mechanism. Based on the current actual position of the host mechanism and the set parameters such as the stop angle and the stop range, the host mechanism can be stopped at a fixed point to avoid the situation in which the existing free stop may cause the machine to fail to start smoothly the next time.

[0018] In addition, the present disclosure also provides a cold rolling mill control device and a readable storage medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following drawings are only intended to illustrate and explain the present disclosure, and are not intended to limit the scope of the present disclosure.

[0020] Figure 1 A schematic structural diagram of a control system for a cold rolling mill according to an embodiment of the present disclosure is shown;

[0021] Figure 2 A schematic structural diagram of a push rod device in a control system of a cold rolling mill according to an embodiment of the present disclosure is shown;

[0022] Figure 3 A schematic diagram showing the steps of a cold rolling mill control method according to an embodiment of the present disclosure is shown;

[0023] Figure 4 A schematic diagram showing the steps of a cold rolling mill control method according to another embodiment of the present disclosure is shown;

[0024] Figure 5 An operation interface diagram of an HMI device used in a control method for a cold rolling mill according to an embodiment of the present disclosure is shown;

[0025] Figure 6 It is a schematic diagram of the module structure of a control device for a cold rolling mill according to another embodiment of the present disclosure;

[0026] Reference numerals

[0027] 1 Pushing mechanism, 2 Rotating mechanism, 3 Feeding mechanism, 5 Mainframe mechanism, 10 Ejector device, 11 Ejector head mechanism, 13 Ejector, 20 Rack for blank tubes, 30 Rack for finished tubes, 100 Cold rolling mill control device, 101 First acquisition module, 102 Second acquisition module, 105 First calculation module, 107 Feeding trolley control module, 109 Start module

[0028] S10 obtains the bed length L of the feeding mechanism and the blank tube length L3 of the blank tube;

[0029] S30 calculates and obtains the filling distance Δs2 of the feeding carriage based on the bed length L and the blank tube length L3;

[0030] S50: After the blank tube is pushed into place by the pushing mechanism, the feeding carriage automatically moves to a specific position of the feeding mechanism based on the filling distance Δs2;

[0031] S70: The host mechanism is automatically started;

[0032] S100 obtains a shutdown trigger signal;

[0033] S200 obtains one or more parameters of the current host position, parking angle, and parking range;

[0034] S300 calculates a stop start angle and a stop end angle of the host mechanism based on the acquired current host position, stop angle, and stop range;

[0035] S400 controls the host mechanism to stop based on the stop start angle and the stop end angle. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present disclosure, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. All other embodiments obtained by ordinary technicians in the field based on the embodiments in the embodiments of the present disclosure should fall within the scope of protection of the embodiments of the present disclosure.

[0037] According to the present disclosure The first aspect , providing a cold rolling mill control system.

[0038] Figure 1 A schematic diagram showing a partial composition of a control system for a cold rolling mill according to an embodiment of the present disclosure is shown. Figure 2 A schematic structural diagram of a push rod device in a control system of a cold rolling mill according to an embodiment of the present disclosure is shown;

[0039] like Figure 1 The control system of the cold rolling mill includes a push mechanism 1, a rotary mechanism 2, a feeding mechanism 3, and a main mechanism 5 connected in sequence. The push mechanism 1 pushes the blank tube to be processed forward, and pushes it to the feeding mechanism 3 after passing through the rotary mechanism 2. The feeding mechanism 3 feeds the blank tube to the main mechanism 5. The rotary mechanism 2 pushes the blank tube to rotate the same set angle in the rolling area according to the set rotation angle; the main mechanism 5 drives the main frame to reciprocate and drives the rolling die to roll the blank tube. In addition, the control system of the cold rolling mill can also include a blank tube storage rack 20, a discharging mechanism, a finished tube storage rack 30, a hydraulic system, and a central control device (not shown in the drawings) respectively connected to the above mechanisms and controlling these mechanisms. The cold rolling process of the blank tube is realized through the cold rolling mill control system of this structure.

[0040] like Figure 2As shown, the push mechanism 1 includes a push rod device 10 for pushing the blank tube, and the push rod device 10 includes a push rod head mechanism 11 and a push rod 13. The push rod 13 is a pipe with the same caliber as the blank tube, and is aligned with the blank tube during operation. Under the movement of the push rod head mechanism 11, the blank tube is pushed along the trough of the push mechanism 1 toward the direction of the rotary mechanism 2; the push rod head mechanism 11 is connected to the sprocket gear and moves under the drive of the sprocket gear, so that the two achieve synchronous movement; the chain gear is connected to the sprocket encoder to record the distance traveled by the push rod device 10. The push mechanism 1 is also equipped with a sensing device, which is installed at the position where the blank tube reaches when it is pushed into place by the push mechanism 1. That is, when the blank tube reaches this position at one end close to the feeding mechanism, the push mechanism 1 stops pushing the current blank tube. The sensing device may be a photoelectric sensor or a hardware device with a stopper. Those skilled in the art may select a suitable sensing device structure as needed without creative effort, so the structure is not described in detail herein.

[0041] The feeding mechanism 3 is used to feed the blank tube to the main machine, including a feeding trolley and a driving mechanism related to the feeding trolley. The feeding trolley reciprocates back and forth in the bed of the feeding mechanism 3 by, for example, a screw drive. According to an embodiment of the present disclosure, a feeding trolley is included.

[0042] According to another embodiment of the present disclosure, the front limit position of the feeding mechanism 3 is provided with a front limit sensor, and the rear limit position is provided with a rear limit sensor, wherein the front limit position indicates the position closest to the main mechanism 5 that the feeding trolley can reach, and the rear limit position indicates the position closest to the pushing mechanism 1 that the feeding trolley can reach. Those skilled in the art can select appropriate front limit sensors and rear limit sensors as needed without creative work, so the structure is not described in detail here. By setting the front limit sensor and the rear limit sensor, it is convenient to automatically measure some related values, such as the automatic measurement of the bed length.

[0043] According to another embodiment of the present disclosure, the host mechanism is connected to a host encoder. Specifically, it is an external encoder of a drive motor of a host frame in the host mechanism, so as to record the current position of the host frame in real time. Based on this structure, the position of the host frame can be detected in real time, thereby providing a basis for, for example, fixed-point parking.

[0044] According to the present disclosure Second aspect , providing a cold rolling mill control method.

[0045] Figure 3 A schematic diagram of the steps of a cold rolling mill control method according to an embodiment of the present disclosure;

[0046] like Figure 3 The control method shown is applicable to the control system of the cold rolling mill of the first embodiment described above, and the method comprises:

[0047] S10 obtains the bed length L of the feeding mechanism and the blank tube length L3 of the blank tube;

[0048] The bed length L of the feeding mechanism indicates the maximum distance that the feeding trolley can move in the track of the feeding mechanism. In the prior art, the operator uses a tape measure to measure manually, and once there is an adjustment, it needs to be re-measured, which results in measurement errors.

[0049] Based on an embodiment of the present disclosure, the front limit position of the feeding mechanism is provided with a front limit sensor, and the rear limit position of the feeding mechanism is provided with a rear limit sensor, so that the bed length L of the feeding mechanism can be obtained by automatic measurement.

[0050] Specifically, the feeding trolley can be driven to the front limit sensor and the current front limit position can be recorded through the central control device of the cold rolling mill control system; the feeding trolley can be driven to the rear limit sensor and the current rear limit position can be recorded, and the difference between the front limit position and the rear limit position can be calculated, which is the bed length L of the feeding mechanism. It can be understood that the feeding trolley can be driven to the position of the rear limit sensor first, the rear limit position can be recorded, and then the feeding trolley can be driven to the position of the front limit sensor, the front limit position can be recorded, and the bed length L can be obtained based on the difference between the front limit position and the rear limit position.

[0051] The blank tube length L3 of the blank tube represents the length from the blank tube head to the blank tube tail. In the prior art, different blank tubes have different blank tube lengths L3, so it is necessary to manually determine the specific position of the feeding bed that the feeding trolley is to reach according to the current blank tube length.

[0052] According to another embodiment of the present disclosure, the blank tube length L3 of the current blank tube is automatically measured based on a sprocket gear connected to the ejector device and a sprocket encoder connected to the sprocket gear installed in the pusher mechanism. This step may specifically include:

[0053] Obtain the diameter D of the sprocket gear and the number of pulses N corresponding to one rotation of the sprocket encoder;

[0054] Since the diameter D of the sprocket gear and the number of pulses N corresponding to one rotation of the sprocket encoder are related to the specifications of the selected sprocket gear and sprocket encoder, after the specifications of the sprocket gear and sprocket encoder are determined, they can be obtained directly through product parameters or by measurement.

[0055] Obtaining the count value N1 of the sprocket encoder when the pushing mechanism pushes the blank tube to the position of the sensing device;

[0056] Specifically, the pushing mechanism pushes the blank tube to the position of the sensing device, at which time the push rod device stops running, and the distance traveled by the push rod device can be known by reading the count value N1 of the sprocket encoder.

[0057] Obtaining the actual distance S at which the push rod device of the push mechanism moves to align with the sensing device;

[0058] Specifically, the actual distance S at which the push rod head mechanism of the push rod device of the push mechanism moves to align with the sensing device can be obtained by measuring in advance;

[0059] The length L3 of the blank tube is obtained based on the diameter D of the sprocket gear, the number of pulses N corresponding to one rotation of the sprocket encoder, the count value N1 of the sprocket encoder, and the actual distance S.

[0060] On the basis of the above parameters, since the diameter of the sprocket gear is D and the number of pulses corresponding to one rotation of the sprocket encoder is N, the circumference of the sprocket L1 = PI*D, and the distance Δs1 corresponding to each pulse of the sprocket encoder = L1 / N; based on the obtained sprocket encoder count value N1 and the distance Δs1 corresponding to each pulse of the sprocket encoder, it can be calculated that the pushing length L2 = N1*Δs1; combined with the actual distance S when the push rod device of the pushing mechanism moves to align with the sensing device, it is calculated that the length of the blank tube L3 = actual distance S-pushing length L2.

[0061] S30 calculates and obtains the filling distance Δs2 of the feeding carriage based on the bed length L and the blank tube length L3;

[0062] Since the lengths of different blank tubes are different, in order to enable the front end of the blank tube to reach the rolling position of the main machine mechanism before rolling, the feeding trolley needs to determine the required compensation distance based on the length of the blank tube itself, and then move to a specific position in the bed of the feeding mechanism according to the compensation distance, and then it can be rolled smoothly.

[0063] On the basis of obtaining the blank tube length L3 and the bed length L, the filling distance Δs2 of the feeding trolley can be automatically calculated, and the filling distance Δs2 of the feeding trolley = the bed stroke measurement length L-the blank tube length L3.

[0064] Based on the above embodiments, based on obtaining relevant parameters such as the sprocket gear, sprocket encoder, etc., the blank tube length L3 of the current blank tube can be automatically obtained. On the basis of obtaining this value, combined with the aforementioned automatically obtained feed bed length L, the feed trolley filling distance can be obtained. Therefore, the central control device can control the feed trolley to automatically run to the expected position based on the filling distance, realizing automatic control of the entire process, ensuring that the equipment does not need to stop working due to waiting for other processes, and improving work efficiency.

[0065] S50: After the blank tube is pushed into place by the pushing mechanism, the feeding carriage moves to a specific position of the feeding mechanism based on the filling distance Δs2;

[0066] In this step, after the filling distance Δs2 of the feeding trolley is obtained, the feeding trolley can be controlled by the central control device and driven to move a corresponding distance to a specific position.

[0067] S70 The host mechanism is automatically started.

[0068] During the process of the feeding trolley moving forward from the rear limit position to a specific position, the host mechanism is in a stopped state; when the feeding trolley moves to a specific position, the feeding trolley stops running, and the host mechanism is started at this time, and then the feeding trolley starts again and moves forward until it reaches the front limit position, and the host mechanism stops working again, and then the feeding trolley moves back from the front limit position to the rear limit position, waiting for the push mechanism to push again. When the next blank tube is pushed into place by the pushing mechanism, the feeding trolley moves forward from the rear limit position again to a specific position suitable for the current blank tube length, stops running, and then starts again to start the host mechanism and the feeding trolley in sequence, and repeats this process.

[0069] The above process can be automatically controlled by the central control device.

[0070] Figure 4 FIG. 1 is a schematic diagram of steps of a cold rolling mill control method according to another embodiment of the present disclosure; Figure 4 The control method of the cold rolling mill shown in the figure is applicable to the host mechanism of the control system of the cold rolling mill connected to a host encoder for locating the motion stroke of the host mechanism, and the method further comprises:

[0071] S100 obtains a shutdown trigger signal;

[0072] According to an embodiment of the present disclosure, a shutdown operation can be triggered by setting an HMI device connected to the central control device and setting a corresponding shutdown start button or key on the HMI device.

[0073] Figure 5FIG. 4 shows an operation interface diagram of an HMI device used in a method according to an embodiment of the present disclosure; Figure 5 As shown, a host fixed-point stop enable button or key is also provided on the HMI device. The host fixed-point stop enable button or key is operated to determine whether to activate the fixed-point stop control function. After determining to activate the fixed-point stop control function, the stop start button is operated, and the system will stop in a fixed-point stop manner.

[0074] S200 obtains one or more parameters of the current host position, parking angle, and parking range;

[0075] In this embodiment, an external encoder of the host is set to detect the current position of the main frame. The main frame runs back and forth, and the value of the external encoder of the host changes from 0 to 360° for each back and forth operation. Since the mechanical structure is fixed, the current position of the main frame, that is, the current host position, is determined by the value fed back by the host encoder.

[0076] The stop angle represents the position of the main frame at the preset stop. In the prior art, the main machine is generally stopped freely, and the problems that may be caused by the main machine free stopping include: the final stop angle is uncertain, which may cause the rolling die to fail to completely press the rough tube. For some rough tubes with rough outer surface quality, the next time they are started, they cannot be started smoothly due to large resistance. It is necessary to switch to the handwheel mode, adjust the main machine position, and then start. Therefore, by setting the stop angle, the main machine mechanism can be started smoothly when it is started again. This value is generally confirmed in advance according to the specifications of the rolling die and the rough tube. Since technicians in this field can obtain this value through a limited number of tests without creative labor, it will not be expanded here.

[0077] The stopping range means that within a certain range of the stopping angle, the main machine mechanism can be started smoothly after stopping. The setting of this value is also confirmed in advance according to the specifications of the rolling die and the blank tube. Since the technical personnel in this field can obtain this value through limited tests without creative labor, it will not be expanded here.

[0078] like Figure 5 As shown, a display box for displaying the current host position, a stop angle, and a settable text box for the stop range are provided on the operation interface of the HMI device.

[0079] S300 calculates the stop start angle and stop end angle of the host mechanism based on the acquired current host position, stop angle, and stop range.

[0080] The shutdown start angle indicates that when the host reaches this position, the host starts to shut down; the shutdown end angle indicates that when the host finally shuts down, the host stops between the host shutdown start angle and the host shutdown end angle.

[0081] According to the current host position and stop angle, the stop start angle can be automatically calculated; according to the stop start angle and stop range value, the stop end angle can be automatically calculated. Among them, the stop start angle = current host position + stop angle; the stop end angle = stop start angle + stop range value.

[0082] S400 controls the host mechanism to stop based on the stop start angle and the stop end angle.

[0083] In this step, when it is detected that the host mechanism reaches the shutdown start angle, the shutdown is started, and finally the host mechanism is stopped between the host shutdown start angle and the host shutdown end angle.

[0084] In this step, when the main frame is directly changed from the working state to the stopping state, if it stops directly without going through the deceleration process, the speed will drop too quickly, which may easily cause damage to the machine.

[0085] According to another embodiment of the present disclosure, the cold rolling mill control method further includes:

[0086] Obtain at least one of the parameters of the shutdown speed V2 and the shutdown deceleration time T2; specifically, the input boxes of the two parameters can be set on the HMI device for user setting;

[0087] When receiving the shutdown trigger signal, the host mechanism is controlled to switch from the current running speed to the shutdown running speed V2;

[0088] Similarly, the user can trigger the shutdown operation by operating the shutdown start button or key set on the HMI device. After receiving the shutdown trigger signal, the main frame switches from the current rolling operation speed V1 to the shutdown operation speed V2 to achieve deceleration; here, the current rolling operation speed V1 is greater than the shutdown operation speed V2, and even, in order to accurately find the shutdown starting position, the shutdown operation speed V2 is much smaller than the current rolling operation speed V1.

[0089] The host mechanism is controlled to run at the shutdown speed V2 for the shutdown deceleration time T2. Specifically, after the host mechanism switches from the current running speed V1 to the shutdown running speed V2, the host frame of the host mechanism continues to run at the shutdown running speed V2 and continues the shutdown deceleration time T2. Based on this step, the host mechanism is stably operated at the shutdown running speed V2, so as to better enter the next shutdown stage.

[0090] When the current position of the host reaches the host stop start angle, the host mechanism is controlled to start stopping; wherein the host stop start angle is calculated based on the current host position and the stop angle. When the current position of the host determined based on the value fed back by the host encoder reaches the host stop start angle, the host frame is controlled to stop moving; specifically, the stop start angle can be automatically calculated based on the current host position and stop angle, and the stop start angle = current host position + stop angle.

[0091] Based on the method of the above embodiment, the external encoder of the host is set to record the current position of the main frame. Combined with the current position, the host is stopped at a specific angle by setting parameters such as the stop angle and the stop range to meet the next normal startup.

[0092] Based on the above embodiments, according to another embodiment of the present disclosure, the preparation before shutdown is performed by a multi-stage speed mode, so that the process before shutdown is smoother. More speeds can also be set as needed, for example, a second shutdown operation speed V3 and a second shutdown deceleration time T3 are set, and the host mechanism runs the shutdown deceleration time T2 at the shutdown operation speed V2, and then runs the shutdown deceleration time T3 at the shutdown operation speed V3, and so on. The multi-stage shutdown operation speed and shutdown deceleration time are related to parameters such as the rolling speed under the current process requirements.

[0093] According to the present disclosure The third aspect , a cold rolling mill control device 100 is provided.

[0094] Figure 6 FIG. 1 is a schematic diagram of a module structure of a cold rolling mill control device 100 according to an embodiment of the present disclosure; Figure 6 As shown,

[0095] The control device 100 of the cold rolling mill includes a first acquisition module 101, a second acquisition module 102, a first calculation module 105, a feeding trolley control module 107 and a start module block 109. The first acquisition module 101 is used to acquire the bed length L of the feeding mechanism, and the second acquisition module 102 is used to acquire the blank tube length L3 of the blank tube; the first calculation module 105 calculates and acquires the filling distance Δs2 of the feeding trolley based on the bed length L and the blank tube length L3; the feeding trolley control module 107 controls the feeding trolley to automatically move to a specific position of the feeding mechanism based on the filling distance Δs2 after the blank tube is pushed into place by the pushing mechanism; the start module block 109 controls the host mechanism to start automatically.

[0096] According to another embodiment of the present disclosure, the second acquisition module 102 further includes a third acquisition module, a fourth acquisition module, a fifth acquisition module, a sixth acquisition module and a second calculation module, wherein the third acquisition module is used to acquire the diameter D of the sprocket gear, the fourth acquisition module is used to acquire the number of pulses N corresponding to one rotation of the sprocket encoder; the fifth acquisition module is used to acquire the count value N1 of the sprocket encoder when the pushing mechanism pushes the blank tube to the position of the sensing device; the sixth acquisition module is used to acquire the actual distance S from the push rod device to the sensing device; the second calculation module calculates the length L3 of the blank tube based on the diameter D of the sprocket gear, the number of pulses N corresponding to one rotation of the sprocket encoder, the count value N1 of the sprocket encoder, and the actual distance S.

[0097] Based on the above embodiments, a cold rolling tube mill control device 100 according to another embodiment of the present disclosure also includes a fixed-point shutdown control module, and the fixed-point shutdown control module includes a seventh acquisition module, an eighth acquisition module, a third calculation module and a third calculation module, wherein the seventh acquisition module is used to obtain a shutdown trigger signal; the eighth acquisition module is used to obtain one or more parameters of the current host position, shutdown angle, and shutdown range; the third calculation module calculates the shutdown start angle and the shutdown end angle of the host mechanism based on the acquired current host position, shutdown angle, and shutdown range; the host control module controls the shutdown of the host mechanism based on the shutdown start angle and the shutdown end angle.

[0098] According to the present disclosure The fourth aspect , a computer-readable storage medium is provided, which stores computer instructions that can be executed by a processor, and when the computer instructions are executed, the cold rolling mill control method of the second aspect mentioned above is implemented.

[0099] The cold rolling mill control device 100 in the embodiment of the present application is based on the same inventive concept as the aforementioned cold rolling mill control method. The relevant beneficial effects of the cold rolling mill control device 100 and its various optional embodiments are also the same as the beneficial effects of the corresponding embodiments in the aforementioned cold rolling mill control method of the first aspect. Therefore, it can be understood according to the embodiment of the cold rolling mill control method mentioned above, and will not be repeated here.

[0100] It should be understood that the various steps described in the method embodiments of the present disclosure may be performed in different orders and / or in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present disclosure is not limited in this respect.

[0101] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments". It should be noted that the modifications of "one" and "multiple" mentioned in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless the context clearly indicates otherwise, it should be understood as "one or more".

[0102] It should be understood that expressions similar to "first", "second", "first" or "second" used in the embodiments of the present disclosure can modify various components regardless of order and / or importance, but these expressions do not limit the corresponding components. The above expressions are only configured for the purpose of distinguishing a component from other components.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A control system for a cold rolling mill, comprising a pushing mechanism (1), a feeding mechanism (3) and a main machine mechanism (5) connected in sequence, wherein the pushing mechanism (1) pushes a blank tube to be processed to the feeding mechanism (3), the feeding mechanism (3) feeds the blank tube to the main machine mechanism (5), the feeding mechanism (3) comprises a feeding trolley for feeding the blank tube, and the main machine mechanism (5) processes the blank tube, characterized in that: The pushing mechanism (1) comprises a push rod device (10) for pushing the blank tube, the push rod device (10) is connected to a sprocket gear, and the sprocket gear is connected to a sprocket encoder to record the distance traveled by the push rod device (10); the pushing mechanism (1) is also equipped with a sensing device, and the sensing device is installed at the position where the blank tube reaches when it is pushed into place by the pushing mechanism (1).

2. The system according to claim 1, characterized in that The front limit position of the feeding mechanism (3) is provided with a front limit sensor, and the rear limit position of the feeding mechanism (3) is provided with a rear limit sensor, wherein the front limit position indicates the position closest to the main machine mechanism (5) that the feeding trolley can reach, and the rear limit position indicates the position closest to the pushing mechanism (1) that the feeding trolley can reach.

3. The system according to claim 1, characterized in that The host mechanism (5) is connected to a host encoder for locating the current position of the host mechanism (5).

4. A cold rolling mill control method, applicable to the cold rolling mill control system according to claim 1 or 2, the method comprising: S10: obtaining the bed length L of the feeding mechanism (3) and the blank tube length L3 of the blank tube; S30 calculates and obtains the filling distance Δs2 of the feeding carriage based on the bed length L and the blank tube length L3; S50: After the blank tube is pushed into position by the pushing mechanism (1), the feeding trolley moves to a specific position of the feeding mechanism (3) based on the filling distance Δs2; S70 The host mechanism (5) starts automatically.

5. According to the method of claim 4, obtaining the length L3 of the blank tube further comprises: Obtain the diameter D of the sprocket gear and the number of pulses N corresponding to one rotation of the sprocket encoder; Obtaining the count value N1 of the sprocket encoder when the pushing mechanism (1) pushes the blank tube to the position of the sensing device; Obtaining an actual distance S between the push rod device (10) and the sensing device; The length L3 of the blank tube is calculated based on the diameter D of the sprocket gear, the number of pulses N corresponding to one rotation of the sprocket encoder, the count value N1 of the sprocket encoder, and the actual distance S.

6. The method according to claim 4 or 5, wherein the host mechanism (5) of the cold rolling mill control system is connected to a host encoder for locating the motion stroke of the host mechanism (5), and the method further comprises: S100 obtains a shutdown trigger signal; S200 obtains one or more parameters of the current host position, parking angle, and parking range; S300 calculates the stop start angle and stop end angle of the host mechanism (5) based on the acquired current host position, stop angle, and stop range; S400 controls the main machine mechanism (5) to stop based on the stop start angle and the stop end angle.

7. The method according to claim 5, further comprising: Obtain at least one of the parameters of the shutdown speed V2 and the shutdown deceleration time T2; When receiving the shutdown trigger signal, controlling the host mechanism (5) to switch from the current running speed V1 to the shutdown running speed V2; Controlling the host mechanism (5) to run at the stop speed V2 for the stop deceleration time T2; When the current position of the host reaches the host stop start angle, the host mechanism (5) is controlled to start stopping; wherein the host stop start angle is calculated based on the current host position and the stop angle.

8. A cold rolling mill control device (100), comprising: A first acquisition module (101) and a second acquisition module (102), wherein the first acquisition module (101) is used to acquire a bed length L of the feeding mechanism (3), and the second acquisition module (102) is used to acquire a blank tube length L3 of the blank tube; A first calculation module (105), wherein the first calculation module (105) calculates and obtains a filling distance Δs2 of the feeding trolley based on the bed length L and the blank tube length L3; A feeding trolley control module (107), wherein the feeding trolley control module (107) controls the feeding trolley to automatically move to a specific position of the feeding mechanism (3) based on the filling distance Δs2 after the blank tube is pushed into place by the pushing mechanism (1); A starting module (109), wherein the starting module (109) controls the host mechanism (5) to start automatically.

9. The cold rolled tube processing control device (100) according to claim 8, wherein the second acquisition module (102) further comprises: A third acquisition module and a fourth acquisition module, wherein the third acquisition module is used to acquire the diameter D of the sprocket gear, and the fourth acquisition module is used to acquire the number of pulses N corresponding to one rotation of the sprocket encoder; A fifth acquisition module, the fifth acquisition module is used to acquire a count value N1 of the sprocket encoder when the pushing mechanism (1) pushes the blank tube to the position of the sensing device; A sixth acquisition module, the sixth acquisition module is used to acquire an actual distance S between the push rod device (10) and the sensing device; The second calculation module calculates the length L3 of the blank tube based on the diameter D of the sprocket gear, the number of pulses N corresponding to one rotation of the sprocket encoder, the count value N1 of the sprocket encoder, and the actual distance S.

10. The cold rolling mill control device (100) according to claim 8 or 9, characterized in that: It also includes a fixed-point shutdown control module, which includes: A seventh acquisition module, the seventh acquisition module is used to acquire a shutdown trigger signal; An eighth acquisition module, the eighth acquisition module is used to acquire one or more parameters of the current host position, the parking angle, and the parking range; a third calculation module, which calculates a stop start angle and a stop end angle of the host mechanism (5) based on the acquired current host position, stop angle, and stop range; A host control module controls the host mechanism (5) to stop based on the stop start angle and the stop end angle.

11. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions that can be executed by a processor, and the computer instructions implement the method according to any one of claims 4 to 7 when executed.

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