Profiling equipment for subway parts and control method

Abstract

The invention relates to the technical field of stamping, in particular to profiling equipment for subway parts and a control method. The profiling equipment for the subway part comprises a bottom die, a stamping die, a pressure adjusting assembly, a stamping part and a pressure detecting part. The stamping die comprises a plurality of sub-dies arranged in an array mode, and the sides, facing the bottom die, of the sub-dies are matched with the side, facing the stamping die, of the bottom die. The pressure adjusting assembly comprises a plurality of pressure adjusting pieces, each sub-die is connected with one pressure adjusting piece, and the pressure adjusting pieces are used for adjusting the distance between each sub-die and the bottom face of the stamping die. The stamping part is fixedly connected with the pressure adjusting assembly so as to drive the pressure adjusting assembly to move towards the bottom die. The pressure detection part is used for detecting the pressure applied to the to-be-stamped workpiece by the pressure adjusting part and the stamping part. The multiple pressure adjusting pieces control the sub-dies in the different areas to achieve stamping of the to-be-stamped workpiece, the pressure generated when the workpiece is stamped is adjusted in different areas conveniently, the purpose of dynamically adjusting the pressure in the stamping process is achieved, and then the purpose of adjusting the different pressures according to the different areas when the workpiece is stamped and formed is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the stamping technology field, and in particular to a subway part profiling equipment and control method. BACKGROUND

[0002] The existing subway part profiling equipment mostly adopts an integral pressure regulating structure, and realizes the stamping action by driving the integral mold through a single power source. The pressure regulation is in a global unified control mode. However, due to the significant differences in the material thickness, deformation amount and forming requirements of different regions of the workpiece (especially the root parts), the unified pressure is difficult to adapt to the local forming requirements: when the pressure is too large, cracks or excessive deformation are easily caused in the thin-walled regions or stress concentration parts; when the pressure is too small, the forming is insufficient in the thick-walled regions or complex corners, and the structural strength is insufficient. At the same time, the pressure feedback mechanism of the traditional equipment is lagging, and relies on manual experience for static adjustment. It cannot be dynamically adjusted according to the pressure changes in the stamping process in real time, resulting in a long debugging period, a high scrap rate, and difficulty in meeting the batch stable production requirements of high-precision subway parts. SUMMARY

[0003] The purpose of the present application is to provide a subway part profiling equipment and control method, which can adjust the pressure during stamping and realize dynamic adjustment.

[0004] In one aspect, the present application provides a subway part profiling equipment, which comprises:

[0005] A bottom die for supporting a workpiece to be stamped;

[0006] A stamping die comprising a plurality of sub-molds arranged in an array, one side of the sub-molds facing the bottom die being matched with one side of the bottom die facing the stamping die;

[0007] A pressure regulating assembly comprising a plurality of pressure regulating pieces, each sub-mold being connected to a pressure regulating piece, the pressure regulating piece being used to adjust the distance between each sub-mold and the bottom surface of the stamping die;

[0008] A stamping piece fixedly connected to the pressure regulating assembly to drive the pressure regulating assembly to move towards the bottom die;

[0009] A pressure detection piece for detecting the pressure applied to the workpiece to be stamped by the pressure regulating piece and the stamping piece.

[0010] As an optional technical solution of the above-mentioned subway part profiling equipment, the pressure regulating piece comprises a first hydraulic push rod, the pressure detection piece comprises a first pressure detection piece, the first hydraulic push rod is fixedly connected to the first pressure detection piece, the first pressure detection piece is fixedly connected to the sub-mold, and the first pressure detection piece is arranged between the first hydraulic push rod and the sub-mold.

[0011] As an optional technical scheme of the subway part pressing equipment, the pressure regulating part further comprises a connecting arm, two ends of the connecting arm are respectively fixedly connected with the first hydraulic push rod and the first pressure detecting part.

[0012] As an optional technical scheme of the subway part pressing equipment, the number of the connecting arms is four, the first pressure detecting part is in a rectangular structure, and the connecting arms are fixedly connected with the corners of the first pressure detecting part.

[0013] As an optional technical scheme of the subway part pressing equipment, the pressure regulating part further comprises a mounting lug, and the mounting lug is arranged on the circumferential side wall of the first pressure detecting part.

[0014] As an optional technical scheme of the subway part pressing equipment, the subway part pressing equipment further comprises a linkage plate, a top of the linkage plate is fixedly connected with the stamping part, and a bottom of the linkage plate is fixedly connected with the pressure regulating assembly.

[0015] As an optional technical scheme of the subway part pressing equipment, the subway part pressing equipment further comprises a mounting seat and a guide part, the mounting seat is fixedly connected with the stamping part, the mounting seat is used for supporting the stamping part, the guide part is arranged on a side of the mounting seat facing the linkage plate, the linkage plate is provided with a guide hole, one end of the guide part is fixedly connected with the mounting seat, and the other end of the guide part penetrates through the guide hole and is located on the other side of the linkage plate.

[0016] As an optional technical scheme of the subway part pressing equipment, the pressure detecting part comprises a second pressure detecting part, and the second pressure detecting part is arranged between the stamping part and the linkage plate.

[0017] As an optional technical scheme of the subway part pressing equipment, the subway part pressing equipment further comprises a pressure regulating module, and the pressure regulating module is in communication connection with the pressure regulating assembly, the stamping part and the pressure detecting part.

[0018] The subway part pressing equipment provided by the application has at least the following beneficial effects:

[0019] The multiple sub-molds arranged in an array are arranged in an array, that is, the sub-molds cooperate with each other to achieve the purpose of stamping, the sub-molds correspond to the pressure adjusting pieces one by one, the pressure adjusting pieces are connected with the stamping pieces to be driven by the stamping pieces to move to the direction of the workpiece to be stamped, so that the stamping die and the bottom die cooperate to stamp and form the workpiece to be stamped, the stamping piece controls the multiple sub-molds to move downward at the same time, and the multiple pressure adjusting pieces control the sub-molds in different regions to stamp the workpiece to be stamped, so as to adjust the pressure of the workpiece during stamping in different regions, to achieve the purpose of dynamically adjusting the pressure during stamping, and to achieve the purpose of adjusting different pressures in different regions during stamping and forming of the workpiece, so as to accurately stamp the workpiece.

[0020] The pressure adjusting piece and the stamping piece are electrically connected with the pressure detection piece, so that the pressure change of the pressure adjusting piece and the stamping piece during work can be detected, and the pressure detected by the pressure detection piece is transmitted to the pressure adjusting module, and the pressure adjusting module controls the extension and retraction of the pressure adjusting piece and the stamping piece according to the obtained pressure, so as to conveniently adjust the pressure during stamping and forming of the workpiece.

[0021] On the other hand, the application provides a subway component compression equipment control method, which is applied to the subway component compression equipment provided in any of the above-mentioned schemes, and includes the following steps:

[0022] Obtaining a pressure signal received by the pressure detection piece;

[0023] Comparing whether the pressure signal is equal to a preset pressure signal;

[0024] If the pressure signal is not equal to the preset pressure signal, the pressure adjusting assembly and the stamping piece are controlled to act to adjust the distance of each pressure adjusting piece relative to the bottom die, and the distance of the adjusted pressure adjusting piece relative to the bottom die is stored;

[0025] After the storage is completed, before stamping, the pressure adjusting piece and the stamping piece work according to the distance of the stored pressure adjusting piece relative to the bottom die.

[0026] The subway component compression equipment control method provided by the application has at least the following beneficial effects:

[0027] The subway component compression equipment control method can compare the obtained pressure signal with the preset pressure signal, and then adjust the length of the pressure adjusting piece and the stamping piece according to the comparison result and store it, so as to ensure the stamping quality. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a structural schematic view of the subway component compression equipment in the embodiment of the application;

[0029] Figure 2 It is an exploded schematic view of the subway component compression equipment in the embodiment of the application;

[0030] Figure 3 Fig. 3 is a structural schematic view of the connection between the pressure regulating component and the first pressure detecting component in an embodiment of the present application;

[0031] Figure 4 Fig. 4 is a structural schematic view of the connection between the punch component and the second pressure detecting component in an embodiment of the present application.

[0032] In the drawings:

[0033] 1, bottom die; 2, punch die; 21, sub-die; 3, pressure regulating assembly; 31, pressure regulating component; 311, first hydraulic push rod; 312, connecting arm; 313, mounting lug; 314, locking screw; 4, punch component; 5, first pressure detecting component; 6, second pressure detecting component; 7, linkage plate; 71, guide hole; 8, mounting seat; 9, guide component; 10, pressure regulating module; 100, workpiece to be punched. DETAILED DESCRIPTION

[0034] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and moreover, the "above", "over" and "on" of the first feature to the second feature include the first feature directly above and obliquely above the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "below", "under" and "under" of the first feature to the second feature include the first feature directly below and obliquely below the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0036] In the description of the present application, it should be noted that unless specifically defined and limited otherwise, the terms "mounting", "connected", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0038] As shown in Figure 1 and Figure 2 The present embodiment provides a stamping equipment for subway parts, which comprises a bottom die 1, a stamping die 2, a pressure adjusting assembly 3, a stamping piece 4 and a pressure detecting piece, wherein the bottom die 1 is used to support the workpiece 100 to be stamped; the stamping die 2 comprises a plurality of sub-molds 21 arranged in an array, and the side of the sub-mold 21 facing the bottom die 1 is matched with the side of the bottom die 1 facing the stamping die 2; the pressure adjusting assembly 3 comprises a plurality of pressure adjusting pieces 31, and each sub-mold 21 is connected with a pressure adjusting piece 31, and the pressure adjusting piece 31 is used to adjust the distance between each sub-mold 21 and the bottom surface of the stamping die 2; the stamping piece 4 is fixedly connected with the pressure adjusting assembly 3 to drive the pressure adjusting assembly 3 to move towards the bottom die 1; and the pressure detecting piece is used to detect the pressure applied to the workpiece 100 to be stamped by the pressure adjusting piece 31 and the stamping piece 4.

[0039] The plurality of sub-molds 21 arranged in an array are arranged in an array, that is, the sub-molds 21 are matched with each other to achieve the purpose of stamping, and the sub-molds 21 are one-to-one corresponding to the pressure adjusting pieces 31, and the pressure adjusting pieces 31 are connected with the stamping piece 4 to be driven by the stamping piece 4 to move towards the workpiece 100 to be stamped, so as to realize the cooperation of the stamping die 2 and the bottom die 1 to stamp and form the workpiece 100 to be stamped. The stamping piece 4 controls the downward movement of the plurality of sub-molds 21, and the plurality of pressure adjusting pieces 31 respectively control the sub-molds 21 in different regions to realize the stamping of the workpiece 100 to be stamped, which is convenient for adjusting the pressure of the workpiece during stamping in different regions, and realizes the purpose of dynamically adjusting the pressure during stamping, so as to realize the purpose of adjusting different pressures according to different regions during stamping and forming of the workpiece, and facilitate accurate stamping of the workpiece.

[0040] The pressure detection member is electrically connected with the pressure regulating member 31 and the stamping member 4, so that the pressure change of the pressure regulating member 31 and the stamping member 4 during working can be detected, and the pressure detected by the pressure detection member is transmitted to the pressure regulating module 10, and the pressure regulating module 10 controls the extension and retraction of the pressure regulating member 31 and the stamping member 4 according to the obtained pressure, so that the convenience of adjusting the pressure during the stamping forming of the workpiece is realized.

[0041] As shown in Figure 3 In some embodiments, the pressure regulating member 31 includes a first hydraulic push rod 311, and the pressure detection member includes a first pressure detection member 5, the first hydraulic push rod 311 is fixedly connected with the first pressure detection member 5, the first pressure detection member 5 is fixedly connected with the sub-mold 21, and the first pressure detection member 5 is arranged between the first hydraulic push rod 311 and the sub-mold 21.

[0042] Specifically, the push rod end of the first hydraulic push rod 311 is fixedly connected with the first pressure detection member 5, the first pressure detection member 5 can detect the extrusion force applied by the first hydraulic push rod 311 to the sub-mold 21, and then the pressure applied by each sub-mold 21 to the workpiece 100 to be stamped can be adjusted to ensure that the pressure applied to different positions of the workpiece 100 to be stamped meets the stamping requirements.

[0043] The first pressure detection member 5 includes a pressure sensor, which can be a strain gauge, and the strain gauge can detect the pressure applied by the pressure regulating member 31 to the corresponding sub-mold 21.

[0044] In some embodiments, the pressure regulating member 31 further includes a connecting arm 312, both ends of the connecting arm 312 are fixedly connected with the first hydraulic push rod 311 and the first pressure detection member 5, respectively. The connecting arm 312 is provided to connect the first hydraulic push rod 311 and the first pressure detection member 5, the connecting arm 312 is a curved arm, which can be elastically deformed and moved after being subjected to the thrust of the first hydraulic push rod 311, and then the pressure applied by the first hydraulic push rod 311 is transmitted to the sub-mold 21, so that hard collision between the sub-mold 21 and the workpiece 100 to be stamped can be avoided, a certain rebound before stamping is provided, and the quality of the workpiece after forming is ensured.

[0045] For example, the number of connecting arms 312 is four, the first pressure detection member 5 has a rectangular structure, and the connecting arms 312 are fixedly connected with the corners of the first pressure detection member 5.

[0046] The connecting arms 312 are uniformly arranged on the outer peripheral wall of the first hydraulic push rod 311, since the number of connecting arms 312 is four, the four corners of the first pressure detection member 5 are fixedly connected with the connecting arms 312, respectively, so that the connection stability of the first pressure detection member 5 and the first hydraulic push rod 311 can be improved, and the rebound of the connecting arm 312 can be realized to ensure the forming quality of the workpiece.

[0047] In some embodiments, the pressure adjusting piece 31 further comprises a mounting lug 313, which is arranged on the circumferential side wall of the first pressure detecting piece 5.

[0048] The mounting lug 313 is arranged on the four circumferential side walls of the first pressure detecting piece 5, or the two circumferential side walls of the first pressure detecting piece 5 facing away from each other are fixedly provided with the mounting lug 313, which is fixedly connected with the sub-mold 21 through a fastener. The arrangement of the mounting lug 313 can ensure that the pressure adjusting piece 31 and the sub-mold 21 are fixedly connected.

[0049] For example, the fastener comprises a locking screw 314, which is threadedly connected with the sub-mold 21 through the mounting lug 313.

[0050] In some embodiments, the subway part pressing equipment further comprises a linkage plate 7, the top of which is fixedly connected with the punching piece 4, and the bottom of which is fixedly connected with the pressure adjusting assembly 3.

[0051] The bottom of the linkage plate 7 is fixedly connected with the pressure adjusting assembly 3, that is, the linkage plate 7 is fixedly connected with the plurality of pressure adjusting pieces 31, and the linkage plate 7 is fixedly connected with the punching piece 4, so as to realize the purpose of simultaneous action of the plurality of pressure adjusting pieces 31 under the driving of the punching piece 4.

[0052] The extension lengths of the plurality of pressure adjusting pieces 31 can be adjusted according to the positions of the corresponding sub-molds 21 relative to the workpiece, so as to ensure that each position of the workpiece can be reasonably impacted and formed, and the pressing quality of the obtained workpiece is ensured.

[0053] The linkage plate 7 is a rectangular plate, which is easy to process and can reduce manufacturing cost.

[0054] In some embodiments, the subway part pressing equipment further comprises a mounting seat 8 and a guide piece 9, the mounting seat 8 is fixedly connected with the punching piece 4 and is used for supporting the punching piece 4, the guide piece 9 is arranged on the side of the mounting seat 8 facing the linkage plate 7, the linkage plate 7 is provided with a guide hole 71, one end of the guide piece 9 is fixedly connected with the mounting seat 8, and the other end of the guide piece 9 passes through the guide hole 71 and is located on the other side of the linkage plate 7.

[0055] The mounting seat 8 provides support for the punching piece 4, and the mounting seat 8 is the same as a punching machine (without a punching head), which is not specifically described in the embodiment. The guide piece 9 is a guide column, and the cross-sectional shape of the guide column is circular or rectangular.

[0056] The mounting seat 8 is a circular plate, and the guide pieces 9 are arranged in a circle at the bottom of the mounting seat 8, and the number of the guide pieces 9 is multiple, and correspondingly, the guide holes 71 arranged on the linkage plate 7 are also arranged in a circle, and the guide pieces 9 and the guide holes 71 are arranged one by one, each guide piece can be inserted into the corresponding guide hole 71, and under the cooperation of the guide pieces 9 and the guide holes 71, the stamping die 2 can be stably moved upward or downward, and the stamping quality is improved.

[0057] The pressure piece includes a second hydraulic push rod, and the extension end of the second hydraulic push rod is fixedly connected with the linkage plate 7, so that the linkage plate 7 can drive the stamping die 2 to move linearly relative to the workpiece 100 to be stamped.

[0058] As shown in Figure 4 The pressure detection piece includes a second pressure detection piece 6 arranged between the stamping piece 4 and the linkage plate 7.

[0059] In some embodiments, the subway component profiling equipment further includes a pressure regulating module 10, and the pressure regulating module 10 is in communication connection with the pressure regulating assembly 3, the stamping piece 4 and the pressure detection piece respectively.

[0060] After receiving the pressure detected by the pressure detection piece, the pressure regulating module 10 controls the length of the stamping piece 4 and the pressure regulating piece 31 according to the preset pressure, so as to realize the adjustment of the pressure of each sub-die 21 relative to the workpiece to be stamped.

[0061] Specifically, the pressure regulating module 10 includes a main controller, a main hydraulic control unit electrically connected with the main controller, a plurality of sub-hydraulic control units, a data acquisition unit and a parameter storage unit, the main hydraulic control unit is electrically connected with the second hydraulic push rod, the plurality of sub-hydraulic control units are electrically connected with the first hydraulic push rods 311 one by one, the data acquisition unit is electrically connected with the second pressure sensor and the first pressure sensor, the main controller realizes data interaction with each unit through an internal bus, the main hydraulic control unit, the sub-hydraulic control unit, the data acquisition unit and the parameter storage unit are integrated through the main controller, and data interaction of each unit is realized through the internal bus, forming a set of efficient and cooperative control system. This integrated design makes each component not an independent individual, but can realize real-time sharing and linkage control of information, greatly improving the integrity and accuracy of pressure regulation. The data acquisition unit can collect signals of each pressure sensor in time, the parameter storage unit provides a stable preset reference for pressure regulation, and the main controller serves as a core hub to quickly process information and issue instructions to each control unit, ensuring that the whole pressure regulation process is fast and consistent, laying a solid system foundation for subsequent accurate pressure regulation.

[0062] Specifically, the main controller is built-in with a pressure regulation algorithm module, which can receive real-time pressure signals transmitted by the data acquisition unit, compare the real-time pressure signals with the preset pressure threshold in the parameter storage unit, and send control instructions to the main hydraulic control unit and the sub-hydraulic control unit according to the comparison result; the pressure regulation algorithm module built-in the main controller is the key to realize intelligent pressure control. The module can receive pressure signals transmitted by the data acquisition unit in real time, compare them with the preset pressure threshold in the parameter storage unit, and then accurately send control instructions according to the comparison result. This process realizes the dynamic and automatic pressure regulation, which can adjust the pressure parameters in real time according to the actual stamping condition of the workpiece without manual intervention. According to the different pressure molding needs of different areas of the subway parts, the algorithm can quickly calculate and output the adaptive pressure control scheme, effectively improving the precision and flexibility of pressure regulation, ensuring that the pressure molding quality of each area of the subway parts meets the design standard, and reducing the workpiece defects caused by mismatched pressure.

[0063] Specifically, the pressure regulating module 10 also includes a human-computer interaction unit, which is electrically connected with the main controller. The human-computer interaction unit includes a touch display screen and physical buttons, which are used to realize manual input of pressure parameters, visual display of pressure curves, and real-time monitoring of equipment running state; significantly improving the operation convenience and controllability of the equipment. The combination of the touch display screen and the physical buttons enables the operator to intuitively and quickly input the pressure parameters, meeting the individual pressure molding needs of different workpieces. At the same time, the visual display of the pressure curve enables the operator to master the pressure change trend in real time, and the real-time monitoring function of the equipment running state facilitates timely discovery of abnormal conditions and intervention. This not only reduces the requirement for the professional skills of the operator and shortens the operation training period, but also improves the controllability in the production process, helping to improve the production efficiency and the maintenance efficiency of the equipment.

[0064] Specifically, the pressure regulating module 10 also has an overload protection function. When the second pressure sensor or the first pressure sensor detects that the pressure value exceeds the preset safety threshold in the parameter storage unit, the main controller will immediately send a stop instruction to the main hydraulic control unit and the corresponding sub-hydraulic control unit to control the second hydraulic push rod and the related first hydraulic push rod 311 to stop the extension and retraction action; the overload protection function provides reliable safety protection for the equipment and the workpiece. When the second pressure sensor or the first pressure sensor detects that the pressure value exceeds the preset safety threshold, the main controller can immediately issue a stop instruction to control the related hydraulic push rod to stop. This mechanism can effectively prevent the stamping die 2 and the linkage plate 7 from being damaged due to excessive pressure, reducing the maintenance cost and downtime of the equipment. At the same time, it can also prevent the workpiece from being irreversibly deformed or damaged due to overload, ensuring the product qualification rate and guaranteeing the continuity and stability of production, fundamentally improving the safety performance and service life of the entire pressure molding equipment.

[0065] The metro component press equipment workflow is as follows:

[0066] 1. Preparation phase

[0067] The operator places the workpiece 100 to be stamped on the bottom die 1, ensuring accurate positioning of the workpiece; checks the installation status of each component, confirms that the stamping die 2 is properly matched with the bottom die 1, the pressure adjusting piece 31 is securely fixed with each sub-die 21 through the locking screw 314, and the stamping piece 4 is reliably connected between the linkage plate 7 and the mounting seat 8; the preset pressure threshold and safety threshold of each region of the workpiece are input through the man-machine interaction unit such as the touch display screen of the pressure adjusting module 10, and the parameter storage unit records the relevant data.

[0068] 2. Start and initialize

[0069] After starting the equipment, the pressure adjusting module 10 performs system initialization, and the main controller detects the communication status of the second hydraulic push rod, the first hydraulic push rod 311, the second pressure sensor, and the first pressure sensor through the internal bus, and enters the standby state after confirming that each component is fault-free.

[0070] 3. Overall down pressure start

[0071] The operator sends a stamping start instruction through the man-machine interaction unit, and the pressure adjusting module 10 sends an extension instruction to the second hydraulic push rod of the stamping piece 4; the second hydraulic push rod extends, pushing the linkage plate 7 downward through the second pressure sensor, and the linkage plate 7 drives all the pressure adjusting pieces 31 and the stamping die 2 below to descend synchronously, gradually approaching the workpiece.

[0072] 4. Zone pressure adjustment

[0073] When the stamping die 2 contacts the workpiece and starts to apply pressure:

[0074] The second pressure sensor detects the overall stamping pressure in real time and transmits the signal to the data acquisition unit of the pressure adjusting module 10;

[0075] Each first pressure sensor detects the pressure of the workpiece applied by the corresponding region stamping die 2 and feeds back the signal to the data acquisition unit through the first hydraulic push rod 311;

[0076] The main controller of the pressure adjusting module 10 calls the pressure adjustment algorithm module to compare the real-time pressure signal with the preset threshold value in the parameter storage unit;

[0077] If the pressure of a certain region deviates from the preset value, the main controller sends an extension instruction to the corresponding first hydraulic push rod 311: when the pressure is insufficient, the first hydraulic push rod 311 extends to increase the pressure of the region stamping die 2; when the pressure is too large, the first hydraulic push rod 311 retracts to reduce the pressure of the region, achieving accurate pressure adjustment in each region.

[0078] 5、Real-time monitoring and overload protection

[0079] During the whole stamping process, the pressure curves of the second pressure sensor and the first pressure sensor and the equipment running state are displayed in real time by the man-machine interaction unit through the pressure regulating module 10; if the overall pressure detected by the second pressure sensor exceeds the safety threshold, or the pressure of a certain region detected by a first pressure sensor exceeds the limit, the main controller immediately sends a stop command to the second hydraulic push rod and the related first hydraulic push rod 311, and all the telescopic actions are paused to avoid damage to the equipment or the workpiece.

[0080] 6、Stamping forming and resetting

[0081] When the pressure in each region is stable within the preset range and the workpiece meets the forming requirements, the main controller sends a retraction command to the second hydraulic push rod to drive the linkage plate 7, the pressure regulating part 31 and the stamping die 2 to rise and separate from the workpiece; at the same time, the first hydraulic push rod 311 is reset to the initial state; the operator takes out the formed workpiece, and the equipment returns to the standby state, waiting for the next operation.

[0082] The embodiment also provides a subway component pressure forming equipment control method, which is applied to the subway component pressure forming equipment provided in the above embodiment and includes the following steps:

[0083] Obtaining a pressure signal received by a pressure detection part;

[0084] Comparing whether the pressure signal is equal to a preset pressure signal;

[0085] If the pressure signal is not equal to the preset pressure signal, the pressure regulating assembly 3 and the stamping part 4 are controlled to act to adjust the distance of each pressure regulating part 31 relative to the bottom die 1, and the adjusted distance of the pressure regulating part 31 relative to the bottom die 1 is stored;

[0086] After the storage is completed, before stamping, the pressure regulating part 31 and the stamping part 4 work according to the stored distance of the pressure regulating part 31 relative to the bottom die 1.

[0087] The subway component pressure forming equipment control method provided in the embodiment can compare the obtained pressure signal with the preset pressure signal, and then adjust the length of the pressure regulating part 31 and the stamping part 4 according to the comparison result and store the length, so as to ensure the stamping quality.

[0088] Since there are errors in the thicknesses of different batches of workpieces to be stamped, in addition, the method can also be used for different batches of workpieces to be stamped, improve the machining precision and ensure the machining quality.

[0089] The metro component profiling equipment control method provided in the embodiment, the pressure regulating piece 31 and the stamping piece 4 are electrically connected with the pressure detecting piece, so that the pressure change of the pressure regulating piece 31 and the stamping piece 4 working can be detected, the pressure detected by the pressure detecting piece is transmitted to the pressure regulating module 10, the pressure regulating module 10 controls the expansion and contraction of the pressure regulating piece 31 and the stamping piece 4 according to the obtained pressure, so that the convenience of adjusting the pressure of the workpiece stamping forming is realized. The stamping piece 4 controls multiple sub-molds 21 to move downward at the same time, and multiple pressure regulating pieces 31 control the sub-molds 21 in different regions to realize the stamping of the workpiece 100 to be stamped, so as to adjust the pressure of the workpiece stamping in different regions, realize the purpose of adjusting different pressures in different regions during the workpiece stamping forming, and facilitate accurate stamping of the workpiece.

[0090] The metro component profiling equipment provided by the application has the following advantages:

[0091] 1. Realize accurate pressure regulation in different regions

[0092] The sub-mold 21 and the pressure regulating piece 31 are arranged in an array and correspond to each other, and are independently controlled by the pressure regulating module 10, so that different pressures can be applied to different regions of the workpiece (especially the root differentiated parts). The problem that the traditional overall pressure regulation cannot adapt to the local forming requirements of complex workpieces is solved, and the defects of local overpressure (cracks, deformation) or underpressure (insufficient forming) caused by global uniform pressure are avoided, and the accurate forming requirements of complex structures of metro components are met.

[0093] 2. Consideration of synchronization and independence

[0094] The linkage plate 7 drives all stamping dies 2 to move downward synchronously under the drive of the stamping piece 4, ensuring the coordination and rhythm consistency of the overall stamping process; at the same time, each pressure regulating piece 31 independently controls the pressure output of the corresponding stamping die 2, and can flexibly adjust the pressure parameter according to the forming requirements of different regions of the workpiece, realizing the differential control of local pressure on the basis of ensuring the overall stamping efficiency, and considering the integrity and pertinence of the stamping process.

[0095] 3. Intelligent dynamic feedback adjustment

[0096] The electrical connection of the pressure regulating module 10 with the pressure regulating piece 31 and the stamping piece 4 is arranged, and a real-time pressure feedback and control closed loop is constructed: the pressure regulating module 10 can receive the pressure change signal transmitted by the pressure regulating piece 31 and the stamping piece 4 in real time, and automatically adjust the expansion and contraction amount according to the preset forming parameter, realizing the dynamic response and accurate regulation and control of the pressure. This design reduces manual intervention, improves the response speed and accuracy of pressure regulation, and reduces the quality fluctuation caused by human operation error.

[0097] 4. Improve production efficiency and quality stability

[0098] Through precise pressure control, the subsequent finishing process of the workpiece (such as crack repair and deformation correction) is significantly reduced, the production cost is reduced, the pressure regulation process is simplified, the equipment debugging time is shortened, the stability of the pressure parameters in the batch production process is improved, the consistency of the quality of the subway parts is ensured, and the device is suitable for large-scale industrial production scenes.

[0099] The profile equipment for subway parts provided by the application has the characteristics of "subarea precise regulation", "intelligent closed-loop control" and "safe cooperative design", and specifically as follows.

[0100] 1. The pressure regulation structure realizes the cooperative operation of "overall driving + subarea independent pressure regulation"

[0101] The traditional profile equipment adopts a structure of "single pressure source + overall mold core", and the pressure acts on the whole workpiece through rigid conduction, so that the pressure cannot be adjusted according to the thickness, material and forming curvature difference of different regions of the subway parts (such as the vehicle body frame and interior support parts), and local overpressure (workpiece cracking) or underpressure (poor forming) is easily caused. The double-layer driving structure of "second hydraulic push rod + array type first hydraulic push rod 311" solves the above problems.

[0102] Overall driving layer: the second hydraulic push rod drives the linkage plate 7 and all stamping dies 2 to be pressed synchronously, so that the consistency of the basic stamping action of the whole workpiece is ensured, and local pressure leakage is avoided;

[0103] Subarea regulation layer: each stamping die 2 corresponds to an independent first hydraulic push rod 311 and a first pressure sensor, so that the pressure of the stamping die 2 in the region can be controlled (stretching and increasing pressure / shrinking and reducing pressure) according to the forming requirements of different regions of the workpiece, and the precise regulation of "one region one pressure" is realized.

[0104] This "overall synchronization and then subarea fine adjustment" structure solves the core problem of the traditional equipment "pressure one-size-fits-all".

[0105] 2. Control system upgrade: build a closed-loop system of "real-time sensing-intelligent operation-dynamic execution"

[0106] The pressure regulation of the traditional equipment depends on manual experience, and has the problems of response lag, low precision and poor repeatability. The integrated pressure regulation module 10 forms a fully automatic closed-loop control system.

[0107] Sensing end: the second pressure sensor (monitoring overall pressure) and the first pressure sensor (monitoring subarea pressure) collect pressure signals in real time, and the data acquisition unit realizes high-speed transmission and pretreatment of signals;

[0108] Operation end: The main controller has a pressure regulation algorithm module, which compares the real-time pressure with the preset threshold value in the parameter storage unit (which can be entered in advance for different workpieces), and quickly calculates the adjustment amount.

[0109] Execution end: The main / sub hydraulic control unit drives the corresponding hydraulic push rod to extend or retract according to the algorithm instructions, completing pressure correction.

[0110] The entire process does not require manual intervention, the response speed is in milliseconds, the pressure regulation accuracy far exceeds manual operation, and the parameter visualization and flexible modification can be realized through the man-machine interaction unit to adapt to the production needs of different specifications of subway parts.

[0111] 3. Safety and practicality optimization: integrated multiple protection and convenient operation design

[0112] Traditional equipment lacks targeted safety protection, which is easy to cause mold damage or workpiece scrap due to pressure overload; at the same time, the operation process is complex, and the personnel skill requirement is high. The present application has carried out double optimization in practicality and safety:

[0113] Safety protection: It has overload protection function, when any pressure sensor detects that the pressure exceeds the preset safety threshold, the main controller immediately issues a stop instruction, and the first hydraulic push rod 311 and the second hydraulic push rod are forced to stop, avoiding damage to the equipment and workpiece from the source;

[0114] Convenient operation: Through the man-machine interaction unit composed of touch display screen and physical buttons, the integrated operation of parameter input, pressure curve display and equipment state monitoring is realized, reducing the training cost of operators;

[0115] Structural stability: The cooperation design of guide rod and guide hole 71 ensures the coaxiality of the up-down movement of linkage plate 7, avoids the size deviation of workpiece caused by mold core deviation, and improves the molding consistency.

[0116] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not a limitation on the embodiments of the present application. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principles of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A forming equipment for subway components, characterized in that, include: Bottom mold (1), used to support the workpiece (100) to be stamped; The stamping die (2) includes a plurality of sub-dies (21) arranged in an array, wherein the side of the sub-dies (21) facing the bottom die (1) cooperates with the side of the bottom die (1) facing the stamping die (2); The pressure regulating assembly (3) includes multiple pressure regulating components (31), each of the sub-dies (21) is connected to one of the pressure regulating components (31), and the pressure regulating component (31) is used to adjust the distance between each of the sub-dies (21) and the bottom surface of the stamping die (2); A stamping part (4) is fixedly connected to the pressure regulating assembly (3) to drive the pressure regulating assembly (3) to move toward the bottom mold (1); A pressure detection element is used to detect the pressure applied to the workpiece (100) to be stamped by the pressure regulating element (31) and the stamping element (4).

2. The forming equipment for subway components according to claim 1, characterized in that, The pressure regulating component (31) includes a first hydraulic push rod (311), and the pressure detection component includes a first pressure detection component (5). The first hydraulic push rod (311) is fixedly connected to the first pressure detection component (5), and the first pressure detection component (5) is fixedly connected to the sub-mold (21). The first pressure detection component (5) is disposed between the first hydraulic push rod (311) and the sub-mold (21).

3. The forming equipment for subway components according to claim 2, characterized in that, The pressure regulating component (31) also includes a connecting arm (312), the two ends of which are fixedly connected to the first hydraulic push rod (311) and the first pressure detection component (5), respectively.

4. The forming equipment for subway components according to claim 3, characterized in that, The number of connecting arms (312) is four. The first pressure detection element (5) has a rectangular structure. The connecting arms (312) are fixedly connected to the corners of the first pressure detection element (5).

5. The forming equipment for subway components according to any one of claims 3 or 4, characterized in that, The pressure regulating component (31) further includes a mounting ear (313), which is disposed on the circumferential sidewall of the first pressure detection component (5).

6. The forming equipment for subway components according to any one of claims 1-4, characterized in that, The subway component forming equipment also includes a linkage plate (7), the top of which is fixedly connected to the stamping part (4), and the bottom of which is fixedly connected to the pressure regulating component (3).

7. The forming equipment for subway components according to claim 6, characterized in that, The forming equipment for subway components also includes a mounting base (8) and a guide (9). The mounting base (8) is fixedly connected to the stamping part (4) and is used to support the stamping part (4). The guide (9) is located on the side of the mounting base (8) facing the linkage plate (7). The linkage plate (7) is provided with a guide hole (71). One end of the guide (9) is fixedly connected to the mounting base (8), and the other end of the guide (9) passes through the guide hole (71) and is located on the other side of the linkage plate (7).

8. The forming equipment for subway components according to claim 6, characterized in that, The pressure detection element includes a second pressure detection element (6), which is disposed between the stamping part (4) and the linkage plate (7).

9. The forming equipment for subway components according to any one of claims 1-4, characterized in that, The subway component forming equipment also includes a pressure regulating module (10), which is communicatively connected to the pressure regulating component (3), the stamping part (4) and the pressure detection part.

10. A control method for a molding equipment for subway components, characterized in that, The forming equipment for subway components according to any one of claims 1-9 comprises the following steps: Obtain the pressure signal received by the pressure detection element; Compare whether the pressure signal is equal to the preset pressure signal; If the pressure signal is not equal to the preset pressure signal, the pressure regulating component (3) and the stamping part (4) are controlled to adjust the distance between each pressure regulating component (31) and the bottom mold (1), and the adjusted distance between the pressure regulating component (31) and the bottom mold (1) is stored. After storage is completed, before stamping, the pressure regulating component (31) and the stamping component (4) work according to the distance between the pressure regulating component (31) and the bottom die (1) after storage.

Images