Pressure monitoring system for hydraulic drawing pad of stamping press

Abstract

The invention relates to a pressure monitoring system for a hydraulic drawing pad of a stamping press, and the system comprises a drawing pad which comprises a plurality of hydraulic cylinders; the first controller is electrically connected with the plurality of hydraulic cylinders; the pressure monitoring device is used for monitoring the pressure of the hydraulic cylinder; the second controller is electrically connected with the plurality of pressure monitoring devices; the first controller and the second controller are electrically connected with the display device. According to the pressure monitoring system for the hydraulic deep drawing pad of the stamping press, under the action of the first controller and the second controller, timely and accurate early warning is carried out through the time sequence signal prediction model, and display alarm can be carried out through the display device, so that related personnel can conveniently and timely find equipment faults, and compared with manual faults, the system has the advantages that the working efficiency is greatly improved. According to the pressure monitoring system for the hydraulic drawing pad of the stamping press, faults of the stamping press can be found more timely, recognition is more accurate, and the overall production efficiency of equipment can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile manufacturing, and in particular to a pressure monitoring system for a hydraulic drawing pad of a stamping press. Background Art

[0002] In the process of automobile manufacturing, stamping presses need to be used frequently. Drawing pads are an important part of stamping presses. Drawing pads are mainly used in the process of stamping sheet metal forming by presses to provide a clamping force for the sheet metal clamping process to control the material flow to prevent the sheet metal from wrinkling and cracking. During the forming process, the sheet metal needs to provide a reliable and stable clamping force that can be adjusted in real time according to the forming process to meet the drawing and forming requirements of the sheet metal. Excessive fluctuations in the clamping force indicate that the equipment has failed, which will cause problems such as wrinkling and cracking of the sheet metal. The stamping presses currently used on the production line cannot detect equipment failures in a timely manner, and maintenance personnel can only inspect the equipment component by component, affecting the overall production efficiency of the equipment. Summary of the invention

[0003] The purpose of the present application is to provide a stamping press hydraulic drawing pad pressure monitoring system, which can monitor the pressure of the hydraulic cylinder of the drawing pad and promptly detect pressure fluctuation failures, thereby effectively solving the deficiencies in the prior art.

[0004] To this end, the embodiment of the present application provides a stamping press hydraulic drawing pad pressure monitoring system, comprising:

[0005] A drawing pad, wherein the drawing pad includes a plurality of hydraulic cylinders;

[0006] A first controller, wherein the first controller is electrically connected to a plurality of hydraulic cylinders of the drawing pad, and the first controller controls the movement of the hydraulic cylinders;

[0007] There are multiple pressure monitoring devices, and the number of the pressure monitoring devices corresponds to the number of hydraulic cylinders. The pressure monitoring devices are used to monitor the pressure of the hydraulic cylinders;

[0008] a second controller, the second controller being electrically connected to the plurality of pressure monitoring devices respectively;

[0009] The first controller and the second controller are electrically connected to the display device respectively.

[0010] In some possible implementations, the first controller includes a production line industrial computer, and / or the second controller includes a data acquisition and processing industrial computer.

[0011] In some possible implementations, the system further includes a cabinet, in which the first controller and the second controller are both disposed.

[0012] In some possible implementations, a first network is further included, and the second controller is electrically connected to the display device via the first network.

[0013] In some possible implementations, the first network is a wireless communication network.

[0014] In some possible implementations, a second network and an office module are further included, and the second controller is electrically connected to the office module via the second network.

[0015] In some possible implementations, the second network is a wireless communication network.

[0016] In some possible implementations, a work scheduling center is also included, and the first controller, the second controller and the office module are electrically connected to the work scheduling center respectively.

[0017] In some possible implementations, a position monitoring module is further included, and each of the hydraulic cylinders and the first controller is electrically connected to the position monitoring module, respectively, to monitor the position of each hydraulic cylinder.

[0018] In some possible implementations, a storage device is further included, and the first controller and the second controller are electrically connected to the storage device respectively.

[0019] According to the stamping press hydraulic drawing pad pressure monitoring system provided in the embodiment of the present application, a plurality of pressure monitoring devices are set to monitor the pressure status of a plurality of hydraulic cylinders of the drawing pad. Since a plurality of hydraulic cylinders are required to cooperate when the stamping press is in operation, when a fault occurs in the drawing pad of the stamping press, pressure fluctuations occur in the hydraulic cylinder. The pressure monitoring device can promptly detect the pressure status fluctuations, and under the action of the first controller and the second controller, a timely and accurate early warning is given through a timing signal prediction model, and an alarm can also be displayed through a display device, so that relevant personnel can promptly detect equipment faults. Compared with manual troubleshooting and maintenance, the stamping press hydraulic drawing pad pressure monitoring system can detect faults of the stamping press more promptly and identify them more accurately, which is beneficial to improving the overall production efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A block diagram of a hydraulic drawing pad pressure monitoring system for a stamping press provided in an embodiment of the present application. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0022] like Figure 1 As shown, the embodiment of the present application provides a pressure monitoring system for the hydraulic drawing pad of a stamping press, which is used in automobile production lines, especially in stamping presses in automobile manufacturers' production lines, to monitor the pressure of the drawing pad of the stamping press. The drawing pad is mainly used in the process of stamping sheet metal forming by the stamping press. The drawing pad provides a clamping force for the sheet metal clamping process, etc., to control the flow of materials and prevent the sheet metal from wrinkling and cracking. During the operation of the equipment, the drawing pad will be equipped with multiple hydraulic cylinders, and the multiple hydraulic cylinders cooperate to complete the process action. If the drawing pad has a large pressure fluctuation , it indicates that the equipment has failed, which may easily cause problems such as wrinkling and cracking of the sheet metal. At present, the failure of the drawing pad can only be eliminated through manual maintenance and repair. The manual method cannot detect the failure of the drawing pad of the stamping press in time, which is time-consuming and will have an adverse effect on the overall production efficiency of the equipment. The stamping press hydraulic drawing pad pressure monitoring system of the present application aims to realize the convenience and intelligence of the fault monitoring of the drawing pad of the stamping press, which can timely and accurately detect the failure of the drawing pad, and solve it as early as possible to improve the overall production efficiency of the equipment.

[0023] The pressure monitoring system of the hydraulic drawing pad of the stamping press comprises a drawing pad, a first controller 101, a second controller 102, a pressure monitoring device 201 and a display device 300. The drawing pad comprises a plurality of hydraulic cylinders 400. The pressure monitoring device 201 is used to monitor the pressure of the hydraulic cylinders 400. The number of the pressure monitoring devices 201 is also a plurality, and the number of the pressure monitoring devices 201 corresponds to the number of the hydraulic cylinders 400. The number of the pressure monitoring devices 201 is the same as the number of the hydraulic cylinders 400, and each hydraulic cylinder 400 corresponds to a pressure The monitoring device 201, the pressure monitoring device 201 is preferably a pressure sensor, which monitors the output pressure of the hydraulic cylinder 400. The first controller 101 is electrically connected to each hydraulic cylinder 400 of the drawing pad, and the first controller 101 controls the action of the hydraulic cylinder 400. Preferably, the first controller 101 is electrically connected to the oil circuit control valve of the hydraulic cylinder 400. Under the control of the first controller 101, the oil circuit of the hydraulic cylinder 400 is controlled, and then the action control of the hydraulic cylinder 400 is realized, that is, the extension and retraction control of the hydraulic cylinder 400 is realized.

[0024] The second controller 102 is electrically connected to a plurality of pressure monitoring devices 201 respectively. After the pressure monitoring device 201 monitors the output pressure of the hydraulic cylinder 400, the pressure signal is transmitted to the second controller 102. The second controller 102 obtains the output pressure state of each hydraulic cylinder 400. The first controller 101 and the second controller 102 are electrically connected to the display device 300 respectively. The first controller 101 is electrically connected to the display device 300, and the second controller 102 is electrically connected to the display device 300. The telescopic state of each hydraulic cylinder 400 and the pressure state of each hydraulic cylinder 400 can be observed through the display device 300. In this embodiment, under the action of the pressure monitoring device 201, the second controller 102 and the display device 300, when the hydraulic cylinder 400 of the drawing pad has a pressure fluctuation state, the pressure fluctuation state can be timely discovered through the display device 300, thereby realizing real-time monitoring of the fault of the drawing pad of the stamping press. When the drawing pad of the stamping press has a fault, it can be discovered in time, and the fault discovery is more timely, so that the fault can be eliminated in time, which is conducive to improving the overall production efficiency of the equipment.

[0025] In some embodiments, the first controller 101 includes a production line industrial computer, or the second controller 102 includes a data acquisition and processing industrial computer. Preferably, the first controller 101 includes a production line industrial computer, and the second controller 102 includes a data acquisition and processing industrial computer. The production line industrial computer is electrically connected to each hydraulic cylinder 400. The production line industrial computer is used to realize the drive control of each hydraulic cylinder 400 of the drawing pad to realize the action of each hydraulic cylinder 400 to complete the processing of the material. The second controller 102 includes a data acquisition and processing industrial computer, and the data acquisition and processing industrial computer and each pressure monitoring device The device 201 is electrically connected, and under the action of the data acquisition and processing industrial computer, the pressure data of each hydraulic cylinder 400 is collected and processed, and then displayed on the display device 300. The data collection refers to the collection of the pressure value monitored by the pressure monitoring device 201. The data processing value compares the collected pressure value of the hydraulic rod with the value required by the standard specification, and displays it on the display device 300. If the pressure value of a hydraulic cylinder 400 is significantly different from the value required by the standard specification, it indicates that the equipment has a fault, and relevant personnel can find it in time on the display device 300.

[0026] More preferably, the stamping press hydraulic drawing pad pressure monitoring system also includes a cabinet, which can be a cabinet-type protective structure. The cabinet has an internal cavity, and the first controller 101 and the second controller 102 are both arranged in the cabinet to protect the first controller 101 and the second controller 102, which is beneficial to improve the service life of the equipment.

[0027] In some embodiments, a first network is also included, and the second controller 102 is electrically connected to the display device 300 through the first network. Under the action of the first network, signal transmission between the second controller 102 and the display device 300 is realized. The first network can be a wired network. Preferably, the first network is a wireless communication network, so that wireless signal transmission is realized between the second controller 102 and the display device 300, which is more conducive to the layout design of each component. More preferably, a second network and an office module 600 are also included. The second controller 102 is electrically connected to the office module 600 through the second network. Preferably, the office module 600 may include office equipment of a workshop, related parts, etc., for example, it may include a mobile terminal such as a mobile phone of relevant personnel, and relevant information such as a pressure value may be displayed on the office module 600, so that the equipment network and the office network are connected, so that the relevant personnel can directly and promptly know the equipment failure, which is conducive to timely maintenance of the equipment. The second network can be a preferred network. Preferably, the second network is a wireless communication network, so that wireless signal transmission is realized between the second controller 102 and the office module 600, which is convenient for mobile terminals and other devices to receive signals.

[0028] More preferably, it also includes a work scheduling center 700, and the first controller 101, the second controller 102 and the office module 600 are electrically connected to the work scheduling center 700 respectively. The work scheduling center 700 is used to grasp the overall operation status and pressure status of the stamping press drawing pad. The work scheduling center 700 can also include data such as warehouse inventory, production progress, and work task arrangements for individual staff members. Relevant personnel can grasp the overall production status through the work scheduling center 700. When the stamping press drawing pad fails, it is convenient for relevant personnel to make timely scheduling to quickly resolve the failure, which is conducive to improving the overall production progress.

[0029] More preferably, the stamping press hydraulic drawing pad pressure monitoring system also includes a position monitoring module 202, and each hydraulic cylinder 400 and the first controller 101 are electrically connected to the position monitoring module 202, respectively. The position of each hydraulic cylinder 400 is located through the position monitoring module 202, and the position signal of each hydraulic cylinder 400 is transmitted to the display device 300 for display. The display device 300 is preferably a display, and the position of each hydraulic cylinder 400 is displayed through the display device 300. At the same time, the pressure value information of each hydraulic rod is also displayed through the display device 300. In this way, the pressure and position information of each hydraulic cylinder 400 can be mastered. When the pressure value of the hydraulic cylinder 400 fluctuates, it is possible to promptly understand which hydraulic cylinder 400 has a fault, accurately locate the fault, and quickly clear the fault.

[0030] More preferably, the stamping press hydraulic drawing pad pressure monitoring system also includes a storage device 800, and the first controller 101 and the second controller 102 are electrically connected to the storage device 800 respectively, and the operating parameters of each hydraulic cylinder 400 are stored through the storage device 800 to facilitate subsequent analysis of the operating status of the equipment.

[0031] In this embodiment, by collecting signals such as pressure and position of the hydraulic cylinder 400, the data is stored, and relevant alarm rules are formulated according to standard specifications so that maintenance personnel can promptly warn and discover faults. In addition, deep learning technology can be introduced to build a prediction model based on the complex electromechanical and oil systems of the equipment based on continuous collection and training of system data. The oil system here refers to the control system of the hydraulic oil used to drive the hydraulic cylinder 400 to achieve prediction and judgment based on the comprehensive signal composed of various complex signals, and provide strategy recommendations for input parameters when the feedback signal is abnormal, so as to realize the intelligent and autonomous parameter adjustment function of the system. In this embodiment, deep learning technology is introduced to build a prediction model based on continuous collection and training of system data, which can accurately predict system behavior and improve the predictability and stability of the system. The system can improve the accuracy and comprehensiveness of judgment based on the prediction and judgment of the comprehensive signal composed of various complex signals. When the system detects that the feedback signal is abnormal, it can automatically recommend the expected value of the input parameter, and realize the intelligent and autonomous adjustment of the input parameter function, thereby enhancing the adaptive ability and robustness of the system.

[0032] Preferably, the demoulding action of the center cylinder of the drawing pad is taken as an example for explanation, the YH10 valve is opened, the main oil circuit replenishes oil to the lower chamber of the center cylinder, the YH15 valve is closed, the oil drain circuit of the lower chamber of the center cylinder is closed, the oil pressure in the lower chamber of the center cylinder rises, and then the center cylinder is lifted up, before the center cylinder begins to descend, the YH12 valve is opened, when the center cylinder begins to descend, the YH18 valve is opened, and the drawing pad is pre-accelerated downward, at the same time, the YH15 valve is opened, the oil drain circuit of the lower chamber of the center cylinder is opened, so that the oil pressure in the lower chamber of the center cylinder is relieved, after the center cylinder reaches the bottom dead point, the YH19 valve is actuated to raise the center cylinder by 20 mm, and then the demoulding of the product is completed. The above control process has strict timing, and there are other types of auxiliary valves to cooperate, and there are strict requirements for signal control and actual feedback. When the control signal of a certain stage is sent, if the corresponding feedback signal or pressure signal does not meet the requirements, the system will automatically trigger a fault and cause quality defects of the product.

[0033] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0034] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0035] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0036] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application 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 replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. The pressure monitoring system of the hydraulic drawing pad of the stamping press is characterized by: include: A drawing pad, wherein the drawing pad includes a plurality of hydraulic cylinders; A first controller, wherein the first controller is electrically connected to a plurality of hydraulic cylinders of the drawing pad, and the first controller controls the movement of the hydraulic cylinders; There are multiple pressure monitoring devices, and the number of the pressure monitoring devices corresponds to the number of hydraulic cylinders. The pressure monitoring devices are used to monitor the pressure of the hydraulic cylinders; a second controller, the second controller being electrically connected to the plurality of pressure monitoring devices respectively; The first controller and the second controller are electrically connected to the display device respectively.

2. The stamping press hydraulic drawing pad pressure monitoring system according to claim 1, characterized in that: The first controller includes a production line industrial computer, and / or the second controller includes a data acquisition and processing industrial computer.

3. The stamping press hydraulic drawing pad pressure monitoring system according to claim 2, characterized in that: It also includes a cabinet, in which the first controller and the second controller are both arranged.

4. The stamping press hydraulic drawing pad pressure monitoring system according to claim 1, characterized in that: It also includes a first network, and the second controller is electrically connected to the display device via the first network.

5. The stamping press hydraulic drawing pad pressure monitoring system according to claim 4, characterized in that: The first network is a wireless communication network.

6. The stamping press hydraulic drawing pad pressure monitoring system according to claim 1, characterized in that: It also includes a second network and an office module, and the second controller is electrically connected to the office module via the second network.

7. The stamping press hydraulic drawing pad pressure monitoring system according to claim 6, characterized in that: The second network is a wireless communication network.

8. The stamping press hydraulic drawing pad pressure monitoring system according to claim 6, characterized in that: It also includes a work scheduling center, and the first controller, the second controller and the office module are electrically connected to the work scheduling center respectively.

9. The stamping press hydraulic drawing pad pressure monitoring system according to claim 1, characterized in that: It also includes a position monitoring module, and each of the hydraulic cylinders and the first controller is electrically connected to the position monitoring module respectively to monitor the position of each hydraulic cylinder.

10. The stamping press hydraulic drawing pad pressure monitoring system according to claim 1, characterized in that: It also includes a storage device, and the first controller and the second controller are electrically connected to the storage device respectively.

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