New energy cell pole hydraulic continuous forming interlocking system and method

Abstract

The present application relates to the technical field of processing and handling of metal plates, and provides a new energy cell pole hydraulic continuous forming interlocking system, which comprises a hydraulic multi-station forming module, an equidistant transfer module, a sub-station pre-mold detection module and a mold closing stage switching control module. The equidistant transfer module synchronously transfers the pole blank to the next forming station; the hydraulic machine performs low-pressure pre-mold detection before formal high-pressure forming, and the detection pressure and stroke are limited within the range that does not cause the blank to be formally plastically formed. The sub-station pre-mold detection module collects the pre-mold load response and displacement response of the corresponding station through each partition pressure detection structure; the mold closing stage switching control module compares it with the single-piece qualified load fingerprint of each station. When any station does not meet the requirements, high-pressure forming is prohibited and the blank is returned; when all stations meet the requirements, formal high-pressure forming is switched, thereby reducing the risk of die pressing caused by empty material, stacked material, misalignment or waste residue.

Description

Technical Field

[0001] This invention relates to the field of metal plate processing and treatment technology, and in particular to a hydraulic continuous forming interlocking system and method for new energy battery cell terminals. Background Technology

[0002] In the continuous hydraulic forming process of new energy battery cell terminals, the terminal blank typically undergoes continuous processes such as feeding and positioning, pre-forming, compaction forming, contour correction, final shaping, and separation of finished and scrap materials. Due to the small size of the terminals, the high precision requirements, and the fact that some terminals have off-center edges, steps, center rods, or irregular contour structures, during multi-station continuous transfer and hydraulic mold closing, if any station experiences abnormalities such as empty material, stacked material, misalignment, residual scrap, or incomplete release of the workpiece, the hydraulic press may still proceed to the formal high-pressure mold closing at a fixed pace. This can easily lead to problems such as terminal contour damage, dimensional deviations, mold jamming, or even mold damage. Therefore, accurately identifying the actual in-mold state at each station before formal high-pressure forming is a key technical problem that needs to be addressed in the continuous hydraulic forming production of new energy battery cell terminals.

[0003] For example, Chinese patent CN217121456U discloses a battery terminal stamping forming device, which includes a mold frame and a mold core mechanism. The mold core mechanism includes a lower mold core, a punching assembly, a pressing and forming assembly, and a blanking assembly. The battery terminal is segmented and pressed and formed by multiple sets of stamping mold cores arranged sequentially along the moving direction of the metal profile. This solution can decompose the traditional one-time stamping into multiple stamping structures with gradually changing curvature, so as to improve the structural stability of the battery terminal after forming and reduce dimensional errors. However, this solution mainly focuses on the segmented forming structure of the stamping mold core and does not perform low-pressure pre-molding identification for whether there is empty material, stacked material, misalignment or waste material residue at each station after continuous transfer of multiple stations, nor does it set up a formal high-pressure forming switching mechanism based on the load-displacement response of each station. For example, Chinese patent CN116493502A discloses a flexible feeding device and method for stamping battery terminals. It uses a feeding mechanism and a clamping mechanism to transport the battery terminals to the stamping station. Multiple clamping plates in the clamping mechanism have semi-circular holes to adapt to the shape of the terminals, thereby improving the automation and forming efficiency of transporting the battery terminals to the stamping station. This solution improves the feeding and clamping transfer problems before terminal stamping, but its focus is on the structural design of the feeding and clamping mechanisms. It fails to detect the single-piece positioning status of the workpiece inside the mold before the hydraulic press officially closes the mold, and it cannot distinguish abnormal states such as empty material, stacked material, workpiece misalignment, material carried by the suction cup, or residual waste material through the pressure response of each station. Another example is Chinese patent CN110539520A, which discloses a dual blank detection device for a press and a mold protection device for a press. Based on the slider position signal and the mold buffer load signal, it detects dual blanks by the difference in slider position when the mold buffer load rises to a predetermined value. This solution can identify double blanks by utilizing the relationship between the slider position and the mold buffer load, which is of certain significance for mold protection. However, its detection targets are mainly focused on the judgment of double blanks in the press, and it is not geared towards the multi-station hydraulic continuous forming scenario of new energy battery cell terminals. It also does not establish single-piece qualified load fingerprints for different forming stations, and it cannot locate the empty material, misalignment, waste material residue or workpiece not released state of specific stations.

[0004] In addition, the existing technology still has the following shortcomings: Existing battery terminal forming equipment focuses on feeding, stamping die structure, or single-station forming efficiency, lacking a mechanism for low-pressure pre-detection of the state inside the die at each forming station before the hydraulic press officially closes the die under high pressure; Traditional multi-station continuous forming production lines rely on suction cup negative pressure, position sensors, or fixed cycle control to determine whether to enter the next die closing, but such detection can usually only determine whether there is material or not, and it is difficult to accurately identify complex anomalies such as material stacking, misalignment, waste residue, workpiece tilting, or suction cup not being released; Although existing mold protection technology can determine the state through the position of the press slide or the mold buffer load, Dual blanks are used, but most are inspected as a whole, making it difficult to identify the specific abnormal station when multiple pole forming stations participate in mold closing simultaneously. Existing pressure or displacement closed-loop control is mostly used to control blank holder force, draw bead pressure or material flow state during stamping, lacking control logic that separates the "low-pressure pre-mold closing detection stage" and the "formal high-pressure forming stage". In the scenario of continuous forming of new energy battery poles, there is still a lack of an interlocking control system that can identify empty material, stacked material, misalignment, waste material residue or workpiece not released state based on the load-displacement response of each station, and decide whether to allow the hydraulic press to enter the formal high-pressure forming stage.

[0005] This invention addresses the common problems in the field of multi-station continuous forming of poles, such as insufficient identification of in-mold status, high risk of mold closing at fixed intervals, difficulty in timely distinguishing between empty and stacked materials, difficulty in locating abnormal stations, easy damage to molds caused by waste material residue, and lack of low-pressure pre-detection interlocking mechanism before formal high-pressure forming. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of current methods by proposing a hydraulic continuous forming interlocking system and method for new energy battery cell terminals.

[0007] To overcome the shortcomings of existing technologies, the present invention adopts the following technical solution: a hydraulic continuous forming interlocking system for new energy battery cell terminals, comprising a hydraulic multi-station forming module, an equidistant transfer module, a pre-molding detection module for each station, and a mold closing stage switching control module; the hydraulic multi-station forming module includes a hydraulic press, an upper mold assembly, a lower mold assembly, and multiple forming stations arranged sequentially along the workpiece transfer direction; the equidistant transfer module is used to synchronously transfer the new energy battery cell terminal blanks in each forming station to the next forming station; the hydraulic press is configured to perform a low-pressure pre-molding detection action before each formal high-pressure forming, and the detection pressure and detection stroke of the low-pressure pre-molding detection action are limited to a range that does not cause the new energy battery cell terminal blanks to undergo formal plastic forming;

[0008] The pre-mold closing detection module for each forming station is equipped with a zoned pressure-bearing detection structure. Each zoned pressure-bearing detection structure is used to collect the pre-mold closing load response and pre-mold closing displacement response of the corresponding forming station during the low-pressure pre-mold closing detection action. The mold closing stage switching control module stores the single-piece qualified load fingerprint corresponding to each forming station. The single-piece qualified load fingerprint includes at least the contact position range, pre-mold closing load range, load rise slope range, and pre-mold closing displacement range of the corresponding forming station when the single-piece pole blank is in normal position. The mold closing stage switching control module is used to compare the pre-mold closing load response and pre-mold closing displacement response collected by each forming station during the low-pressure pre-mold closing detection action with the single-piece qualified load fingerprint of the corresponding forming station to determine whether the corresponding forming station is in the single-piece normal position state.

[0009] Specifically, when the pre-mold closing load response and / or pre-mold closing displacement response of any forming station does not meet the corresponding single-piece qualified load fingerprint, the mold closing stage switching control module prohibits the hydraulic press from entering the formal high-pressure forming and controls the hydraulic press to return; when all forming stations participating in this mold closing meet the corresponding single-piece qualified load fingerprint, the mold closing stage switching control module allows the hydraulic press to switch from low-pressure pre-mold closing detection action to formal high-pressure forming.

[0010] In addition, a method for continuous hydraulic forming and interlocking of new energy battery cell terminals is also provided, the forming and interlocking method comprising the following steps:

[0011] S1. The new energy battery cell electrode blank is synchronously transferred to multiple forming stations of the hydraulic multi-station forming module through the equidistant transfer module.

[0012] S2. Before the hydraulic press performs formal high-pressure forming, the hydraulic press is controlled to perform a low-pressure pre-molding detection action. The detection pressure and detection stroke of the low-pressure pre-molding detection action are limited to a range that does not cause the new energy cell electrode blank to undergo formal plastic forming.

[0013] S3. By using the partitioned pressure-bearing detection structure set up for multiple forming stations respectively, the pre-mold load response and pre-mold displacement response of each forming station are collected during the low-pressure pre-mold detection action.

[0014] S4. Compare the pre-mold closing load response and pre-mold closing displacement response of each forming station with the single-piece qualified load fingerprint of the corresponding forming station to determine whether each forming station is in the normal single-piece position.

[0015] S5. When all forming stations participating in this mold closing process meet the corresponding single-piece qualified load fingerprint, control the hydraulic press to switch from low-pressure pre-mold closing detection action to formal high-pressure forming.

[0016] S6. When any forming station does not meet the corresponding single-piece qualified load fingerprint, the hydraulic press is prohibited from entering the formal high-pressure forming and the return stroke of the hydraulic press is controlled.

[0017] S7. Based on the abnormal forming station and abnormality type that does not meet the single-piece qualified load fingerprint, perform re-feeding, secondary vacuum release, secondary waste material suction, abnormal workpiece removal or alarm shutdown.

[0018] The beneficial effects achieved by this invention are:

[0019] 1. By cooperating with the hydraulic multi-station forming module and the pre-mold closing detection module, the hydraulic press can obtain the pre-mold closing load response and pre-mold closing displacement response of each forming station through low-pressure pre-mold closing detection action before entering the formal high-pressure forming, ensuring that the system has the advantage of pre-identifying the in-mold state before formal high-pressure forming.

[0020] 2. Through the cooperation of the pre-mold closing detection module and the mold closing stage switching control module, the pre-mold closing load response and pre-mold closing displacement response of each forming station can be compared with the single-piece qualified load fingerprint of the corresponding forming station, ensuring that the system has the advantages of identifying empty material, stacked material, misalignment and waste material residue at each forming station.

[0021] 3. Through the cooperation of the hydraulic multi-station forming module and the mold closing stage switching control module, the hydraulic press will only switch from low-pressure pre-mold closing detection action to formal high-pressure forming when each forming station participating in this mold closing meets the corresponding single-piece qualified load fingerprint, thus ensuring that the system has the advantage of switching forming stages based on the actual station status.

[0022] 4. Through the cooperation of the equidistant transfer module and the pre-mold closing detection module at the substation, each target forming station after equidistant transfer can confirm whether the workpiece has actually fallen into the corresponding lower mold positioning area through the low-pressure pre-mold closing load response, ensuring that the system has the advantage of secondary verification of transfer results.

[0023] 5. Through the cooperation of the mold closing stage switching control module and the hydraulic multi-station forming module, if any forming station experiences a sudden increase in pre-mold closing load, premature contact, delayed contact, or abnormal displacement response, the hydraulic press can be prevented from entering the formal high-pressure forming stage and can return to its original position. This ensures that the system has the advantages of active avoidance and mold protection under abnormal conditions.

[0024] 6. Through the cooperation of the equidistant transfer module and the mold closing stage switching control module, the material picking negative pressure state and material release vacuum breaking state of the suction cup robot can be correlated and judged with the pre-mold closing load response of the corresponding forming station, ensuring that the system has the advantage of identifying suction cup carrying material, workpiece not released or abnormal workpiece falling.

[0025] 7. Through the cooperation of the equidistant transfer module, the pre-mold closing detection module at the work station and the mold closing stage switching control module, each round of equidistant transfer must be verified by the low-pressure pre-mold closing at the work station. Only after the verification is qualified can the formal high-pressure forming be allowed, ensuring that the system has the advantage of changing from "fixed-cycle mold closing" to "mold closing after status confirmation".

[0026] 8. Through the cooperation of the hydraulic multi-station forming module, the equidistant transfer module and the mold closing stage switching control module, the forming stations can form a sequential linkage between continuous transfer, low-pressure pre-detection, formal high-pressure forming and abnormal return, ensuring that the system has the advantages of both continuous production cycle and safety interlock. Attached Figure Description

[0027] The invention will be further understood from the following description taken in conjunction with the accompanying drawings. The components in the drawings are not necessarily drawn to scale, but rather the emphasis is on illustrating the principles of the embodiments. In different views, the same reference numerals designate the same parts.

[0028] Figure 1 This is a right-side view of the present invention.

[0029] Figure 2 for Figure 1 Enlarged schematic diagram of part A in the middle.

[0030] Figure 3 for Figure 1 Partial cross-sectional view at point BB.

[0031] Figure 4 for Figure 3 Enlarged schematic diagram of section C.

[0032] Figure 5 This is a front view schematic diagram of the present invention.

[0033] Figure 6 This is a schematic diagram of the upper mold assembly, lower mold assembly, and hydraulic press of the present invention.

[0034] Figure 7 This is a flowchart of the low-pressure pre-molding detection and formal high-pressure forming switching process of the present invention.

[0035] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Hydraulic press; 3. Upper mold assembly; 4. Lower mold assembly; 5. Limiting rod; 6. Support plate; 7. Stand; 8. Sliding rail; 9. Sliding seat; 10. Suction cup body; 11. Workpiece; 12. Clearance area; 13. Mold; 14. Mechanical limiting component; 15. Micro-displacement support component; 16. Displacement detection component; 17. Detection target block; 18. Vacuum pipeline; 19. Limiting hole; 20. Load detection component. Detailed Implementation

[0036] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the spirit of the present invention. Furthermore, the accompanying drawings of the present invention are for simple illustrative purposes only and are not depictions of actual dimensions; this is stated beforehand. The following embodiments will further describe the relevant technical content of the present invention in detail, but the disclosed content is not intended to limit the scope of protection of the present invention.

[0037] according to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 ,as well as Figure 7 As shown, this embodiment provides a hydraulic continuous forming interlocking system for new energy battery cell terminals, including a hydraulic multi-station forming module, an equidistant transfer module, a pre-mold closing detection module at different workstations, and a mold closing stage switching control module. In this embodiment, the hydraulic continuous forming interlocking system for new energy battery cell terminals also includes a frame 1, a central processing unit, and a power supply device. The frame 1 is used to provide an installation foundation and a load-bearing foundation for the hydraulic multi-station forming module, the equidistant transfer module, the pre-mold closing detection module at different workstations, and the mold closing stage switching control module.

[0038] The hydraulic multi-station forming module includes a hydraulic press 2, an upper mold assembly 3, a lower mold assembly 4, and multiple forming stations arranged sequentially along the transfer direction of the workpiece 11. The equidistant transfer module is used to synchronously transfer the new energy battery cell electrode blanks in each forming station to the next forming station. Specifically, the hydraulic press 2 is fixedly installed in the forming area of ​​the frame 1, the upper mold assembly 3 is connected to the slider of the hydraulic press 2, and the lower mold assembly 4 is fixedly installed on the worktable or lower mold mounting base of the frame 1. The multiple forming stations are arranged sequentially on the lower mold assembly 4 along the transfer direction of the workpiece 11. The equidistant transfer module is located on one side or above the hydraulic multi-station forming module and is installed on the frame 1 via a transverse guide rail, a lifting guide rail, or a support base, so that the equidistant transfer module can perform synchronous material picking, transverse movement, and material unloading actions between multiple forming stations.

[0039] like Figure 1 As shown, the hydraulic press 2 is positioned above the upper mold assembly 3 and compresses the upper mold assembly 3 toward the lower mold assembly 4, thereby continuously pressing the new energy cell electrode blanks in each station and finally forming the electrode workpiece 11.

[0040] The hydraulic press 2 is configured to perform a low-pressure pre-molding detection action before each formal high-pressure forming. The detection pressure and detection stroke of the low-pressure pre-molding detection action are limited to a range that does not cause the new energy cell electrode blank to undergo formal plastic forming. In this embodiment, the low-pressure pre-molding detection action is executed by the hydraulic press 2 slider controlled by the mold closing stage switching control module. During the low-pressure pre-molding detection action, the hydraulic press 2 slider approaches the new energy cell electrode blank in each forming station at a lower downward speed, detection pressure, and detection stroke than in the formal high-pressure forming stage, so as to obtain the in-mold contact state of each forming station without damaging the blank or causing the blank to enter the formal plastic deformation state.

[0041] The pre-mold closing detection module for each forming station is equipped with a zoned pressure-bearing detection structure. Each zoned pressure-bearing detection structure is used to collect the pre-mold closing load response and pre-mold closing displacement response of the corresponding forming station during the low-pressure pre-mold closing detection action. Specifically, each zoned pressure-bearing detection structure is located below the lower mold positioning area of ​​the corresponding forming station and forms a pressure-bearing connection with the lower mold assembly 4 or the worktable of the frame 1. Each zoned pressure-bearing detection structure includes a load detection element 20 and a displacement detection element 16. The load detection element 20 is used to collect the pre-mold closing load response generated by the corresponding forming station during the low-pressure pre-mold closing detection action, and the displacement detection element 16 is used to collect the pre-mold closing displacement response of the corresponding forming station during the low-pressure pre-mold closing detection action. Thus, the load response and displacement response of each forming station can be collected separately, rather than being judged only by the overall pressure signal of the hydraulic press 2, thereby facilitating the location of specific abnormal stations.

[0042] The mold closing stage switching control module stores the single-piece qualified load fingerprints corresponding to each forming station. The single-piece qualified load fingerprints include at least the contact position range, pre-mold closing load range, load rise slope range, and pre-mold closing displacement range of the corresponding forming station when the single-piece pole blank is in normal position.

[0043] In this embodiment, the mold closing stage switching control module includes a central processing unit (CPU), a signal acquisition unit, a storage unit, and a control output unit. The CPU, as the control core of the mold closing stage switching control module, is connected to the hydraulic multi-station forming module, the equidistant transfer module, and the pre-mold closing detection module at each forming station. The storage unit, connected to the CPU, stores the single-piece qualified load fingerprint, low-pressure pre-mold closing detection pressure, low-pressure pre-mold closing detection stroke, formal high-pressure forming pressure, formal high-pressure forming stroke, and anomaly handling strategies for each forming station.

[0044] The signal acquisition unit includes sensor terminals, an analog input module, a digital input module, a displacement acquisition module, and an isolation input module. The sensor terminals are connected to the load detection element 20, the displacement detection element 16, and the hydraulic press 2 slider position detection element in each zone's pressure testing structure. The analog input module receives the voltage or current signal output by the load detection element 20 and converts it into load data recognizable by the central processing unit. The displacement acquisition module receives the displacement data output by the displacement detection element 16 or the hydraulic press 2 slider position detection element. The digital input module receives the switching signals output by the top dead center detection switch, limit switch, or safety position detection element. The isolation input module isolates the sensor-side signals from the central processing unit-side signals to reduce interference from the hydraulic press 2, motor, or solenoid valve movements on the detection signals.

[0045] The storage unit includes a non-volatile memory and a runtime buffer. The non-volatile memory stores the single-piece qualified load fingerprint, low-pressure pre-molding detection pressure, low-pressure pre-molding detection stroke, formal high-pressure forming pressure, formal high-pressure forming stroke, load rise slope threshold, displacement response threshold, anomaly type judgment rules, and anomaly handling strategies for each forming station. The runtime buffer temporarily stores the pre-molding load response, pre-molding displacement response, hydraulic press 2 slider position data, and comparison results generated by the central processing unit, which are collected in real time during the low-pressure pre-molding detection action.

[0046] The control output unit includes a digital output module, an analog output module, a relay output module, a safety interlock output module, a valve group control interface, and a drive control interface. The digital output module outputs switch control signals to the alarm unit, the start / stop terminals of the equidistant transfer module, and related actuators. The analog output module outputs pressure or speed setting signals to the proportional pressure control or speed control components of the hydraulic pump station. The relay output module outputs return, stop, or alarm control signals for the hydraulic press 2. The safety interlock output module connects to the downward control circuit of the hydraulic press 2, a safety relay, or a safety controller to cut off the control link for the hydraulic press 2 to enter the formal high-pressure forming stage if the formal high-pressure forming conditions are not met. The valve group control interface connects to the control valve group of the hydraulic press 2, and the drive control interface connects to the lateral movement drive, lifting drive, or suction cup release actuator of the equidistant transfer module.

[0047] The hydraulic multi-station forming module and the sub-station pre-mold detection module work together to enable the hydraulic press 2 to obtain the pre-mold load response and pre-mold displacement response of each forming station through low-pressure pre-mold detection before entering the formal high-pressure forming. This ensures that the system has the advantage of pre-identifying the in-mold state before formal high-pressure forming and solves the problem of lacking a low-pressure pre-detection interlocking mechanism before formal high-pressure forming in the prior art.

[0048] The mold closing stage switching control module is used to compare the pre-mold closing load response and pre-mold closing displacement response collected by each forming station during the low-pressure pre-mold closing detection action with the single-piece qualified load fingerprint of the corresponding forming station to determine whether the corresponding forming station is in the normal single-piece positioning state. Specifically, the input terminal of the central processing unit is electrically connected to the load detection element 20, displacement detection element 16, and hydraulic press 2 slider position detection element in each partition pressure detection structure through the signal acquisition unit, and acquires the pre-mold closing load response, pre-mold closing displacement response, and hydraulic press 2 slider position of each forming station. The central processing unit determines the contact position of the corresponding forming station based on the hydraulic press 2 slider position, determines the pre-mold closing load and load rise slope based on the load change output by the load detection element 20, and determines the pre-mold closing displacement response based on the displacement change output by the displacement detection element 16. Subsequently, the central processing unit compares the contact position, pre-mold load, load rise slope, and pre-mold displacement response with the single-piece qualified load fingerprint of the corresponding forming station in the storage unit to determine whether the forming station is in the normal position of the single-piece pole blank.

[0049] Specifically, when the pre-mold closing load response and / or pre-mold closing displacement response of any forming station does not meet the corresponding single-piece qualified load fingerprint, the mold closing stage switching control module prohibits the hydraulic press 2 from entering the formal high-pressure forming and controls the hydraulic press 2 to return; when all forming stations participating in this mold closing meet the corresponding single-piece qualified load fingerprint, the mold closing stage switching control module allows the hydraulic press 2 to switch from low-pressure pre-mold closing detection action to formal high-pressure forming.

[0050] In this embodiment, the power supply device is installed in the rack 1 or electrical control cabinet, and is used to convert external mains power into the voltage required for the normal operation of the central processing unit, signal acquisition unit, storage unit, control output unit, load detection device 20, displacement detection device 16, hydraulic press 2 slider position detection device, hydraulic press 2 control valve group, hydraulic pump station control unit, drive components of the equidistant transfer module, and alarm unit. The power supply device is implemented using power conversion, circuit breaker protection, overload protection, and grounding protection technologies well known to those skilled in the art, and therefore will not be described in detail in this embodiment.

[0051] Optionally, the partitioned pressure testing structure includes a workstation pressure seat, a micro-displacement support 15, a load testing component 20, a displacement testing component 16, and a mechanical limiting component 14.

[0052] like Figure 3 and Figure 4 As shown, the lower mold assembly 4 includes a lower mold base and multiple lower mold positioning blocks or lower mold cavities disposed on the lower mold base. The multiple lower mold positioning blocks or lower mold cavities respectively form lower mold positioning areas for multiple forming stations. The partitioned pressure-bearing detection structure is correspondingly disposed below each lower mold positioning area and embedded within the lower mold base, making it a local pressure-bearing detection structure for the corresponding forming station. A die 13 for stamping is provided in the lower mold cavity.

[0053] The station pressure bearing seat is located below the lower mold positioning area of ​​the corresponding forming station and is used to bear the pre-molding force generated by the corresponding forming station during the low-pressure pre-molding detection action. Specifically, the lower mold seat is provided with an installation cavity at the corresponding forming station, and the station pressure bearing seat can be slightly floating up and down in the installation cavity. The lower mold positioning block or lower mold cavity is located above the station pressure bearing seat or is detachably connected to the station pressure bearing seat. Thus, during the low-pressure pre-molding detection action, when the upper mold assembly 3 approaches the new energy cell electrode blank downwards, the pre-molding force is transmitted sequentially through the electrode blank, the lower mold positioning block or the lower mold cavity to the station pressure bearing seat.

[0054] The micro-displacement support 15 is disposed between the station pressure seat and the lower mold assembly 4, and is used to enable the station pressure seat to generate elastic micro-displacement during the low-pressure pre-mold detection action; the micro-displacement support 15 is disposed between the lower surface of the station pressure seat and the bottom wall of the lower mold mounting cavity, and is used to elastically support the station pressure seat during the low-pressure pre-mold detection action, so that the station pressure seat can generate elastic micro-displacement within a preset range relative to the lower mold.

[0055] The load detection element 20 is used to detect the pre-mold closing load response of the corresponding forming station. Specifically, the load detection element 20 is disposed between the station pressure seat and the lower mold seat, or between the station pressure seat and the micro-displacement support 15, to detect the pre-mold closing force transmitted from the lower mold positioning block or the lower mold cavity to the station pressure seat, thereby obtaining the pre-mold closing load response of the corresponding forming station. The pre-mold closing load response does not refer only to the pressure value at a single moment, but rather to the load change data formed by the load value collected by the load detection element 20 of the corresponding forming station during the low-pressure pre-mold closing detection action, as the position of the hydraulic press 2 slider, the detection time, or the micro-displacement of the station pressure seat changes. The pre-mold closing load response includes at least one or more of the following: pre-mold closing load value, contact start position, load rise slope, and load fluctuation state. The pre-mold clamping load value is used to reflect the pre-mold clamping force borne by the corresponding forming station during the low-pressure pre-mold clamping detection action; the contact start position is used to reflect the slider position when the upper mold assembly 3 starts to transmit the force to the corresponding forming station through the pole blank; the load rise slope is used to reflect the rate of change of the load as the slider descends or the detection time increases; the load fluctuation state is used to determine whether there is waste residue, stacked material, hard foreign objects or workpiece 11 biased contact at the corresponding forming station.

[0056] The displacement detection element 16 is used to detect the pre-mold closing displacement response of the station pressure seat. The displacement detection element 16 is fixedly installed on the lower mold seat or a detection mounting base fixedly connected to the lower mold seat. The station pressure seat is provided with a detection target block 17 corresponding to the displacement detection element 16. When the station pressure seat generates an elastic micro-displacement relative to the lower mold seat during the low-pressure pre-mold closing detection action, the detection target block 17 moves synchronously with the station pressure seat. The displacement detection element 16 obtains the pre-mold closing displacement response of the station pressure seat by detecting the position change of the detection target block 17. The mechanical limiting element 14 is used to form a rigid support after the elastic micro-displacement of the station pressure seat reaches the preset limit stroke, so that the forming load of the formal high-pressure forming stage bypasses or partially bypasses the load detection element 20. The mechanical limiting element 14 is disposed between the station pressure seat and the lower mold seat. The mechanical limiting element 14 is used to limit the maximum micro-displacement stroke of the station pressure seat relative to the lower mold seat. The mechanical limiting component 14 includes a limiting shoulder disposed on the outer periphery of the station pressure bearing seat and a limiting step disposed in the lower mold base mounting cavity, wherein a preset limiting gap is formed between the limiting shoulder and the limiting step; during the low-pressure pre-mold closing detection action, the station pressure bearing seat generates elastic micro-displacement within the preset limiting gap range, so that the load detection component 20 and the displacement detection component 16 can respectively collect the pre-mold closing load response and the pre-mold closing displacement response; when the elastic micro-displacement of the station pressure bearing seat reaches the preset limiting gap, the limiting shoulder and the limiting step abut against each other to form a rigid support, so that the forming load of the formal high-pressure forming stage is transmitted to the lower mold base through the lower mold positioning block or lower mold cavity, the station pressure bearing seat and the mechanical limiting component 14, thereby bypassing or partially bypassing the load detection component 20.

[0057] Optionally, the micro-displacement support 15 includes at least one of an elastic pad, a disc spring assembly, an elastic support column, or a flexible hinge support; additionally, as... Figure 4 As shown, the mechanical limiting component 14 includes at least one of a limiting step, a limiting block, or a limiting stud;

[0058] During the low-pressure pre-molding detection action, the station pressure seat generates an elastic displacement for detection under the action of the micro-displacement support 15; in the formal high-pressure forming stage, the station pressure seat forms a rigid pressure-bearing fit with the lower mold assembly 4 through the mechanical limiting member 14, so as to avoid the detection structure bearing high-pressure forming loads exceeding its allowable range.

[0059] Optionally, the single-piece qualified load fingerprint includes the contact start position range, pre-mold closing load range, load rise slope range, displacement response range, and contact duration range of the corresponding forming station;

[0060] The mold closing stage switching control module is used to determine the contact start position of the corresponding forming station according to the position of the slider of the hydraulic press 2, determine the pre-mold closing load and load rise slope according to the load change output by the load detection component 20, and determine the displacement response according to the displacement change output by the displacement detection component 16.

[0061] When the contact start position, pre-mold load, load rise slope, displacement response, and contact duration are all within the single-piece qualified load fingerprint range of the corresponding forming station, the forming station is determined to be in the single-piece normal positioning state.

[0062] In addition, in this embodiment, the single-piece qualified load fingerprint is not a single load value, but a set of multi-parameter boundaries formed at the forming station when the single new energy cell electrode blank is placed normally, in normal contact, and before formal plastic forming occurs.

[0063] In this embodiment, the single-piece qualified load fingerprint is determined during the equipment debugging phase or the mold change debugging phase. Specifically, in the first... Each forming station places a single qualified new energy battery cell terminal blank, and controls the hydraulic press to execute... The low-pressure pre-mold closing detection action is performed, and in each low-pressure pre-mold closing detection action, the position of the hydraulic press slider, the pre-mold closing load of the corresponding forming station, the displacement of the pressure bearing seat of the station, and the sampling time are collected, thereby forming the first... The single-piece qualified sample data of each forming station. Preferably, The value range is 5 to 20 times to reduce the impact of single sampling fluctuations on the single-piece qualified load fingerprint.

[0064] The contact determination load Used to distinguish between the non-contact state and the initial contact state of the corresponding forming station. Preferably, the... satisfy: ;in, To determine the load in contact, This represents the maximum permissible detection load during low-pressure pre-molding detection. The contact determination ratio coefficient is preferably set between 0.02 and 0.10. The background fluctuation load of the load testing component in a non-contact state; The load is determined with a safety margin, the value of which is determined based on the material used for the processed pole and stored in advance in memory. These are contact determination parameters, which can be measured during the equipment debugging phase and then stored in the storage unit of the mold closing stage switching control module.

[0065] The contact start position For the first The forming station is in the first The position of the hydraulic press slide when effective pre-mold contact begins to occur during the secondary low-pressure pre-mold detection action. Preferably, when the first... The forming station is in the first The first step in the low-pressure pre-formation detection action Each sampling point satisfies: ; and in continuous All sampling points satisfy the following conditions At that time, it was determined that: ;in, For the first The forming station is in the first The contact start position during the low-pressure pre-molding detection action; For the first The forming station is in the first In the second low-pressure pre-formation detection action, the first The position of the hydraulic press slider corresponding to each sampling point; For the first The forming station is in the first In the second low-pressure pre-formation detection action, the first The pre-formation load corresponding to each sampling point; For contact determination of load; To continuously confirm the number of sampling points and avoid misjudgments caused by instantaneous load fluctuations, preferably, The value range is 3 to 10 sampling points.

[0066] The pre-formation load For the first The forming station is in the first The judgment of the low-pressure pre-molding detection action maintains the stable load formed within the section. Preferably, satisfy: ;in, For the first The forming station is in the first Pre-formation load during the low-pressure pre-formation detection action; To determine the number of segments to be retained The pre-formation load corresponding to each sampling point; To determine the number of sampling points within the holding segment. It is used to characterize the local pre-molding force experienced by the corresponding forming station during the low-pressure pre-molding detection action.

[0067] The load rise slope This characterizes the rate of increase in load after contact with the slider position during the low-pressure pre-molding detection action at the corresponding forming station. Preferably, satisfy: ; For the first The forming station is in the first The load rise slope during the low-pressure pre-molding detection action; and These are the pre-formation loads corresponding to the two preset sampling points after the start of contact; and These are the positions of the hydraulic press sliders corresponding to the two preset sampling points; and These are the sequence numbers of the two preset sampling points after the contact begins, and The corresponding sampling time is later than The corresponding sampling time. The slope of the load change with the slider position is used to reduce the impact of hydraulic press speed fluctuations on the judgment results.

[0068] The displacement response For the first The forming station is in the first During the low-pressure pre-mold closing detection action, the maximum micro-displacement of the workstation bearing seat relative to its initial position before the start of the low-pressure pre-mold closing detection action. Preferably, satisfy: ;in, For the first The forming station is in the first Displacement response during sub-low pressure pre-molding detection To determine the number of segments to be retained The pressure-bearing seat at the corresponding sampling point shifted. For the first The initial displacement of the pressure seat at the workstation before the start of the low-pressure pre-molding detection action. It is used to characterize the elastic bearing displacement state of the corresponding forming station during the low-pressure pre-molding detection action.

[0069] The contact duration This refers to the duration from the start of effective pre-molding contact at the corresponding forming station to the determination of the end of the holding section. Preferably, the... satisfy: ;in, For the first The forming station is in the first Contact duration during the low-pressure pre-molding detection action; For the first The forming station is in the first During the low-pressure pre-formation detection process, the pre-formation load first reaches the contact determination load. Time; To determine the end time of the hold segment.

[0070] In obtaining After the first batch of qualified sample data, the mold closing stage switching control module switches according to the first batch of qualified sample data. The sample boundary values ​​and detection error compensation amounts of each parameter at each forming station are used to determine the single-piece qualified load fingerprint for the corresponding forming station. The range of the contact start position satisfies: ; ;in, For the first The lower limit of the contact start position of each forming station; For the first Upper limit of the contact start position of each forming station; for The minimum value of the contact start position in a single qualified sample; for The maximum value of the initial contact position in a single qualified sample; This refers to the error in slider position detection or the allowable compensation amount for the process.

[0071] The pre-molding load range satisfies: ; ;in, For the first Lower limit of pre-mold closing load at each forming station; For the first Maximum pre-mold closing load of each forming station; for The minimum pre-molding load in a single qualified sample; for The maximum value of the pre-molding load in a single qualified sample; This refers to the load detection error or the allowable compensation amount for the process.

[0072] The range of load rise slopes satisfies: ; ;

[0073] in, For the first Lower limit of the load rise slope at each forming station; For the first Upper limit of the load rise slope of each forming station; for The minimum load rise slope in a single qualified sample; for The maximum value of the load rise slope in a single qualified sample; This represents the slope calculation error or the allowable compensation amount for the process.

[0074] The displacement response range satisfies: ; ;in, For the first Lower limit of displacement response at each forming station; For the first Upper limit of displacement response of each forming station; for The minimum displacement response in a single qualified sample; for The maximum value of displacement response in a single qualified sample; This refers to the displacement detection error or the allowable compensation amount for the process.

[0075] The contact duration range satisfies: ; ;in, For the first Minimum contact duration at each forming station; For the first Maximum contact duration (s) at each forming station; for The minimum contact duration in a single qualified sample; for The maximum contact duration in a single qualified sample; This represents the time sampling error or the allowable compensation amount for the process.

[0076] In this embodiment, , , , , These are the detection errors or allowable process compensation amounts for position, load, slope, displacement, and time, respectively. Preferably, The value range is 0.01mm to 0.05mm. The value range is 10N to 50N. The value range is 0.10 kN / mm to 0.50 kN / mm. The value range is 0.005mm to 0.030mm. The value range is 5ms to 30ms. In this embodiment, , , , , .

[0077] During the production process, the mold closing stage switching control module will collect the contact start position in real time. Pre-formation load Load rise slope Displacement response and duration of contact respectively with the first The single-piece qualified load fingerprint of each forming station is compared item by item.

[0078] When the contact initiation position, pre-mold closing load, load rise rate, displacement response, and contact duration are all within the single-piece qualified load fingerprint range of the corresponding forming station, the forming station is determined to be in a normal single-piece positioning state. Specifically, during the production process, the mold closing stage switching control module will collect the contact initiation position in real time. Pre-formation load Load rise slope Displacement response and duration of contact respectively with the first Each forming station performs a boundary comparison of the single-piece qualified load fingerprint; when the following conditions are met simultaneously, the first part is judged to be qualified. Each forming station is in normal single-piece arrival status: ; ; ; ; At that time, the judgment of the first Each forming station is in normal single-piece delivery status;

[0079] in, and The first The lower and upper limits of the contact start position of each forming station; and The first The lower and upper limits of the pre-molding load for each forming station; and The first The lower and upper limits of the load rise slope for each forming station; and The first The lower and upper limits of the displacement response of each forming station; and The first The lower and upper limits of the contact duration for each forming station.

[0080] When any of the above conditions are not met, the mold closing stage switching control module determines the first... If a forming station is not in a normal single-piece position, the hydraulic press is prohibited from switching from low-pressure pre-molding detection to formal high-pressure forming. Therefore, this application does not form a comprehensive judgment value by weighted summation of multiple parameters, but performs independent boundary judgment on each key station status parameter; as long as any parameter exceeds the single-piece qualified load fingerprint range of the corresponding forming station, the formal high-pressure forming prohibition logic can be triggered.

[0081] In this embodiment, when Later and Below When this occurs, it indicates that there may be empty material or the workpiece is not in place at the forming station; when Earlier and Higher than When this occurs, it indicates that there may be stacked material, waste residue, or hard foreign objects at the forming station; when Exceeding to When the value is within the specified range, it indicates that the elastic displacement of the workstation bearing seat is abnormal, which may indicate that the workpiece is misaligned, tilted, or locally raised.

[0082] Optionally, the mold closing stage switching control module is used to identify abnormal states according to the following rules: when the contact start position of the corresponding forming station is later than the contact start position range in the single-piece qualified load fingerprint, and the pre-mold closing load is lower than the preset load lower limit, it is determined that there is no material or the workpiece is not in place; specifically, when ,and When the corresponding forming station is in a low-pressure pre-molding detection action, it indicates that the contact is lagging and the load is insufficient. This suggests that the forming station may not have placed the pole blank, or the pole blank may not have entered the corresponding lower mold positioning area. It is determined to be an empty material or the workpiece is not in place.

[0083] When the contact start position of the corresponding forming station is earlier than the contact start position range in the single-piece qualified load fingerprint, and the load rise slope is higher than the preset slope upper limit, it is judged as stacked material or hard foreign matter residue; when ,and When the contact occurs, it indicates that the corresponding forming station has made premature contact and the contact stiffness has increased abnormally. This suggests that there may be more than two pole blanks stacked at the forming station, or that there are hard foreign objects in the lower mold positioning area. This is determined to be either stacked material or hard foreign object residue.

[0084] When the pre-mold closing load response at the corresponding forming station suddenly increases and exceeds the upper limit of the low-pressure detection load, it is determined to be either residual waste or material jamming within the mold; the upper limit of the low-pressure detection load is the maximum allowable detection load during the low-pressure pre-mold closing detection action. The real-time pre-mold closing load during the low-pressure pre-mold closing detection action at the corresponding forming station. satisfy Or, when a load increment exceeding a preset surge threshold occurs between adjacent sampling points, it is determined that there is residual waste, in-mold jamming, or localized rigid support at the forming station. Preferably, the... The value range is 0.6kN to 1.2kN; in this embodiment, Take 0.8kN.

[0085] When the displacement response of the corresponding forming station deviates from the displacement response range in the single-piece qualified load fingerprint, it is determined that the workpiece is misaligned, tilted, or has not completely fallen into the lower mold positioning area. or When the displacement response is too small, it indicates that the elastic micro-displacement of the pressure seat during the low-pressure pre-molding detection action is less than or greater than the allowable range under the normal positioning state of a single piece. Among them, a small displacement response may indicate that the pole blank has not been effectively pressed, has not completely fallen into the lower mold positioning area, or has insufficient contact area. A large displacement response may indicate that the pole blank is misaligned, tilted, locally raised, or has scrap material support underneath. It is determined that the workpiece is misaligned, tilted, or has not completely fallen into the lower mold positioning area.

[0086] When the mold closing stage switching control module identifies any of the above-mentioned abnormal states, the mold closing stage switching control module will prohibit the hydraulic press from entering the formal high-pressure forming stage, control the hydraulic press slider to return to the safe standby position, and output alarm information corresponding to the abnormal forming station and abnormal type, so that the equidistant transfer module, waste removal mechanism or manual processing unit can perform re-feeding, waste cleaning or abnormal workpiece removal operations.

[0087] By having the pre-mold closing detection module and the mold closing stage switching control module cooperate with each other, the pre-mold closing load response and pre-mold closing displacement response of each forming station can be compared with the single-piece qualified load fingerprint of the corresponding forming station. This ensures that the system has the advantages of identifying empty material, stacked material, misalignment and waste material residue at each forming station, and solves the problem of insufficient in-mold state recognition in existing multi-station pole column continuous forming.

[0088] Optionally, at least one forming station may be provided with two or more partitioned pressure-bearing detection structures. These partitioned pressure-bearing detection structures are distributed along the outer periphery, offset portion, step portion, or center rod portion of the workpiece 11 at the corresponding forming station. In this embodiment, the two or more partitioned pressure-bearing detection structures are used to collect the local pre-molding load response and local pre-molding displacement response of different pressure-bearing areas within the same forming station. For cylindrical pole blanks, the two or more partitioned pressure-bearing detection structures may be distributed at equal angles along the outer periphery of the workpiece 11. For offset pole blanks, the two or more partitioned pressure-bearing detection structures may be respectively set for the reference edge region and the offset widening portion region. For stepped pole blanks, the two or more partitioned pressure-bearing detection structures may be respectively set for the center rod region and the outer peripheral step region.

[0089] The mold closing stage switching control module is used to compare the load difference and / or displacement difference between different partition pressure testing structures within the same forming station.

[0090] Specifically, let the first Each forming station is equipped with Each zone has a pressure testing structure, and , No. The local pre-formation load collected by the pressure testing structure of each zone during the low-pressure pre-formation detection operation is: The local pre-molding displacement is ,in, The mold closing stage switching control module determines the load difference and displacement difference within the same forming station in the following manner: ; ; For the first The load difference between the pressure-bearing test structures in different zones within each forming station; For the first Within the forming station, the first Local pre-formation loads collected from the load-bearing structure of each zone; For the first Displacement difference between pressure-bearing test structures in different zones within each forming station; For the first Within the forming station, the first Local pre-formation displacement collected from the pressure testing structure of each zone.

[0091] The preset load deviation threshold and preset displacement deviation threshold are determined during the equipment debugging phase or the mold change debugging phase. Specifically, in the... Each forming station places a single qualified new energy battery cell terminal blank and performs multiple low-voltage pre-mold closing detection actions to obtain load difference samples and displacement difference samples under normal positioning conditions. These are then combined with detection errors or allowable process compensation to determine the load deviation threshold. Preferably, the preset load deviation threshold is... and preset displacement deviation threshold satisfy: ; ; For the first Preset load deviation threshold for each forming station; For the first Preset displacement deviation threshold for each forming station; and The first The forming station is in the first The load difference and displacement difference obtained from the detection of a single qualified sample; This refers to the detection error or allowable compensation amount for the load difference between zones; This refers to the detection error or the allowable compensation amount for the displacement difference between zones.

[0092] When the load difference exceeds a preset load deviation threshold, or the displacement difference exceeds a preset displacement deviation threshold, it is determined that the corresponding forming station has a workpiece misalignment, tilting, or localized waste material elevation, and the hydraulic press is prohibited from entering the formal high-pressure forming stage. When this occurs, it indicates that the pre-clamping load distribution in different pressure-bearing areas within the same forming station is uneven, which may result in the workpiece being biased to one side, the biased part not falling into the positioning area, or local scrap being raised; when This indicates inconsistent elastic micro-displacements in different areas of the workstation's pressure bearing seat, potentially indicating workpiece tilting, localized warping, or support from foreign objects underneath. This judgment serves as a regional balance assessment, in addition to the overall assessment of a single workpiece's qualified load fingerprint, to further rule out abnormal postures of individual workpieces within the workstation.

[0093] By cooperating with the hydraulic multi-station forming module and the mold closing stage switching control module, the hydraulic press will only switch from low-pressure pre-mold closing detection to formal high-pressure forming when each forming station participating in this mold closing meets the corresponding single-piece qualified load fingerprint. This ensures that the system has the advantage of switching forming stages based on the actual station status, and solves the problem of high risk of incorrect mold closing caused by existing equipment closing the mold according to a fixed rhythm.

[0094] Optionally, the hydraulic multi-station forming module includes a first pre-positioning and shaping station, a second pre-forming station, a third compaction and forming station, a fourth contour correction station, and a fifth final shaping station; the mold closing stage switching control module stores different single-piece qualified load fingerprints corresponding to the first pre-positioning and shaping station, the second pre-forming station, the third compaction and forming station, the fourth contour correction station, and the fifth final shaping station, respectively.

[0095] Different single-piece qualified load fingerprints are adapted to the height, contact area, local stiffness, pre-mold contact position, and pre-mold load variation characteristics of the pole blank at different forming stages. Specifically, the first pre-positioning and shaping station is used for initial positioning and slight end-face shaping of the pole blank. At this time, the contact area between the pole blank and the upper mold assembly 3 or the lower mold positioning area is small, and the pre-mold load and load rise slope are relatively low. The single-piece qualified load fingerprint corresponding to the first pre-positioning and shaping station is used to characterize whether the blank has entered the initial positioning area and whether there is obvious empty material or offset state.

[0096] The second preforming station is used to perform preliminary preforming on the outer periphery, step area or offset area of ​​the pole blank. At this time, the contact area of ​​the blank gradually changes from initial end face contact to local contour contact. The pre-mold load response and displacement response will change with the change of the preforming contour. The single-piece qualified load fingerprint corresponding to the second preforming station is used to characterize whether the blank enters the preforming cavity according to the preset posture.

[0097] The third compaction forming station is used to compact and form the central rod area, connecting area or main pressure-bearing area of ​​the pole blank. At this time, the local stiffness of the blank increases, and the pre-mold load range and load rise slope are usually higher than those of the previous station. The single-piece qualified load fingerprint corresponding to the third compaction forming station is used to characterize whether the blank has normal pre-compaction contact stiffness, so as to avoid entering the formal high-pressure forming when the material is stacked, foreign objects are raised, or the blank is not completely placed into the cavity.

[0098] The fourth contour correction station is used to correct the edge contour, offset contour or step transition part of the pole blank. At this time, the contact state of different local areas is more sensitive to the workpiece 11 offset. The single qualified load fingerprint corresponding to the fourth contour correction station can mainly include the partition load difference and / or partition displacement difference, which is used to determine whether the pole blank is offset, tilted or locally scrap raised.

[0099] The fifth final shaping station is used to shape the end face height, thickness and final outline of the pole blank. At this time, the blank shape has been basically formed, and the pre-mold contact position and displacement response should be relatively stable. The single-piece qualified load fingerprint corresponding to the fifth final shaping station is used to confirm the single-piece in place status before the finished product is shaped, and to eliminate the situation of waste residue, workpiece 11 being raised or not fully entering the final shaping cavity.

[0100] In this embodiment, the mold closing stage switching control module calls the corresponding single-piece qualified load fingerprint according to the forming station sequence number. That is, the first pre-positioning and shaping station only compares with the first single-piece qualified load fingerprint, the second pre-forming station only compares with the second single-piece qualified load fingerprint, the third compaction forming station only compares with the third single-piece qualified load fingerprint, the fourth contour correction station only compares with the fourth single-piece qualified load fingerprint, and the fifth final shaping station only compares with the fifth single-piece qualified load fingerprint. The single-piece qualified load fingerprints of different forming stations are not interchangeable to avoid misjudgment due to different forming states at each station.

[0101] When the specifications of the pole post, the mold 13, or the forming process parameters are changed, the mold closing stage switching control module re-acquires the single-piece qualified sample data of each forming station during the equipment debugging stage or the mold changing debugging stage, and updates the single-piece qualified load fingerprint of the corresponding forming station. Each pole post of different specifications corresponds to a different mold 13. In this embodiment, the selected mold 13 is adapted to the cavity in which the mold 13 is placed.

[0102] By cooperating with the equidistant transfer module and the pre-molding detection module at the substation, each target forming station after equidistant transfer can confirm whether the workpiece 11 has actually fallen into the corresponding lower mold positioning area through the low-pressure pre-molding load response. This ensures that the system has the advantage of secondary verification of the transfer result and solves the problem that it is difficult to confirm the actual position of the workpiece 11 based solely on the pick-up and put-down action completion signal after the existing suction cup transfer.

[0103] Optionally, the low-pressure pre-molding detection action includes a rapid approach section, a low-speed detection section, and a judgment and holding section; the rapid approach section, the low-speed detection section, and the judgment and holding section are executed sequentially, and all occur before the hydraulic press 2 enters the formal high-pressure forming stage.

[0104] During the rapid approach phase, the hydraulic press 2 slider descends to a preset approach position at a first speed. The preset approach position is the position where the hydraulic press 2 slider approaches but has not yet formed effective contact between the upper mold assembly 3 and the new energy cell electrode blank. Preferably, the preset approach position is determined based on the corresponding mold 13 closing height, the theoretical height of a single electrode blank, and a preset safety gap, ensuring that a safety gap of 0.05mm to 0.20mm is maintained between the upper mold assembly 3 and the electrode blank at the end of the rapid approach phase. In this embodiment, the safety gap is 0.10mm.

[0105] In the low-speed detection section, the slide block of the hydraulic press 2 descends at a second speed lower than the first speed, and the pre-mold closing load response and pre-mold closing displacement response of each forming station are collected by the pre-mold closing detection module of each station. Specifically, the first speed is used to improve the slider approach efficiency, and the second speed is used to reduce the impact at the moment of contact between the upper mold assembly 3 and the pole blank. Preferably, the first speed is 20mm / s to 80mm / s, and the second speed is 3mm / s to 8mm / s; in this embodiment, the first speed is 50mm / s, and the second speed is 5mm / s. The pre-mold closing detection module of each station starts data acquisition at least after the start of the low-speed detection section and continues to acquire data until the end of the judgment and holding section to obtain the contact start position, pre-mold closing load, load rise slope, and station pressure seat displacement response of each forming station.

[0106] During the judgment holding phase, the slide of hydraulic press 2 is held at a preset detection position or within a preset detection pressure range, allowing the mold closing stage switching control module to complete the single-piece qualified load fingerprint comparison. The preset detection position is the position of the slide of hydraulic press 2 at the end of the low-speed detection phase, or the slide position corresponding to the achievement of the preset detection load. The preset detection pressure range is the pressure range allowed for the low-pressure pre-mold closing detection action. The judgment holding phase is used to allow the pre-mold closing load response and pre-mold closing displacement response of each forming station to enter a relatively stable state, avoiding misjudgment based solely on instantaneous contact signals. Preferably, the judgment holding phase duration is 30ms to 100ms; in this embodiment, the judgment holding phase duration is 50ms.

[0107] The detection pressure, detection stroke, and judgment holding time of the low-pressure pre-molding detection action are all limited to a range that prevents the new energy cell electrode blank from undergoing formal plastic forming. Specifically, the detection pressure is less than the formal high-pressure forming pressure, the detection stroke is less than the formal high-pressure forming stroke, and the low-pressure pre-molding detection action is only used to make the upper mold assembly 3 make light contact or low-pressure contact with the electrode blank. Preferably, the maximum detection load per station of the low-pressure pre-molding detection action is 0.6kN to 1.2kN, and the detection stroke is 0.10mm to 0.30mm; in this embodiment, the maximum detection load per station is 0.8kN, and the detection stroke is 0.20mm.

[0108] When the pre-mold closing load response at any forming station in the low-speed detection section or the judgment holding section exceeds the upper limit of the low-pressure detection load, or the pre-mold closing displacement response exceeds the allowable displacement range of the corresponding forming station, the mold closing stage switching control module will no longer continue to execute the judgment holding section. Instead, it will directly prohibit the hydraulic press 2 from entering the formal high-pressure forming stage and control the return stroke of the hydraulic press 2. Thus, the low-pressure pre-mold closing detection action can obtain stable detection data for single-piece qualified load fingerprint comparison, and can also avoid damage to the pole blank or mold 13 caused by continued pressure under abnormal contact conditions.

[0109] By cooperating with the mold closing stage switching control module and the hydraulic multi-station forming module, when any forming station experiences a sudden increase in pre-mold closing load, premature contact, delayed contact, or abnormal displacement response, the hydraulic press 2 can be prevented from entering the formal high-pressure forming and return to its original position. This ensures that the system has the advantages of active avoidance under abnormal conditions and protection of the mold 13, and solves the problem that residual waste, jammed material in the mold, or hard foreign objects can easily damage the mold 13.

[0110] The equidistant transfer module includes multiple suction cup robotic arms, each equipped with a negative pressure detection element and a vacuum breaking valve. Additionally, the equidistant transfer module also includes a sliding track 8, a sliding drive mechanism, a sliding seat 9, a stand 7, and a support plate 6. The sliding track 8 is arranged along the arrangement direction of the multiple forming stations on one side of each forming station. The sliding seat 9 is slidably connected to the sliding track 8. The sliding drive mechanism is disposed on or driven by the sliding seat 9, and is used to drive the sliding seat 9 to reciprocate along the extension direction of the sliding track 8. Figure 2 and Figure 6 As shown, the support plate 6 is fixedly mounted on the sliding seat 9. Multiple suction cup robots are spaced apart along the length of the support plate 6, with the spacing between adjacent suction cup robots matching the spacing between adjacent forming stations. One end of each suction cup robot is connected to the support plate 6 or the sliding seat 9, and the other end extends towards the lower mold positioning area of ​​the corresponding forming station, allowing each suction cup robot to be positioned above its respective forming station to pick up, transfer, and place the new energy battery cell electrode blanks in each forming station. Simultaneously, one end of the stand 7 is connected to the frame 1, and the other end of the stand 7 extends towards one side of the forming station and supports the sliding track 8.

[0111] The suction cup robot includes a suction cup body 10 and a suction cup base for fixing the suction cup body 10. The suction cup body 10 is connected to a vacuum pump or vacuum generator via a vacuum pipeline 18. The vacuum pump or vacuum generator can be mounted on the sliding base 9, the support plate 6, or the frame 1, and is used to provide negative pressure to the corresponding suction cup body 10 when the suction cup robot performs a material picking action, so that the suction cup body 10 adsorbs the pole blank in the corresponding forming station. The negative pressure detection component is set at the connection end of the vacuum pipeline 18 or the suction cup body 10, and is used to detect the actual negative pressure value of the corresponding suction cup robot, and output the material picking negative pressure state or the negative pressure release state after material release to the mold closing stage switching control module. The vacuum breaking valve is set on the vacuum pipeline 18, and is used to open after the suction cup robot moves to the target forming station, so as to release the negative pressure in the suction cup body 10, thereby causing the pole blank to detach from the suction cup body 10 and fall into the lower mold positioning area of ​​the target forming station. The vacuum line 18 can be built into the outer wall of the support plate 6 or hidden and embedded inside the support plate 6. In this embodiment, it is not limited to one of them.

[0112] In this embodiment, each suction cup robot is equipped with a corresponding negative pressure detection device to determine whether each suction cup robot has successfully picked up material, completed material release, and whether there is material stuck in the suction cup. Specifically, when the suction cup robot performs the picking up action, if the negative pressure detection device detects that the negative pressure inside the corresponding suction cup body 10 reaches the preset picking up negative pressure range, the suction cup robot is determined to be in the picking up successful state; when the suction cup robot performs the material release action, if the vacuum breaking valve opens and the negative pressure detection device detects that the negative pressure inside the corresponding suction cup body 10 rises back to the preset release negative pressure range, the suction cup robot is determined to be in the material release completed state; if the negative pressure still does not rise back to the preset release negative pressure range after the vacuum breaking valve opens, the suction cup robot may be in the state of material stuck in the suction cup or the workpiece 11 not being released.

[0113] In this embodiment, the hydraulic multi-station forming module includes a first pre-positioning and shaping station, a second pre-forming station, a third compaction and forming station, a fourth contour correction station, and a fifth final shaping station. The equidistant transfer module is equipped with five suction cup robotic arms. These five suction cup robotic arms move synchronously under the drive of the sliding seat 9, enabling each robotic arm to synchronously transfer the pole blank from its corresponding forming station to the next forming station during a single equidistant sliding motion. A continuous equidistant transfer relationship can be formed between the first pre-positioning and shaping station, the second pre-forming station, the third compaction and forming station, the fourth contour correction station, and the fifth final shaping station. The first pre-positioning and shaping station, the second pre-forming station, the third compaction and forming station, the fourth contour correction station, and the fifth final shaping station respectively correspond to… Figure 5 The numbers a, b, c, d, and e are shown in the diagram.

[0114] In addition, such as Figure 5 As shown, the upper mold assembly 3 includes an upper mold base and multiple forming punches disposed below the upper mold base. The upper mold base is provided with clearance areas 12 corresponding to the multiple suction cup robots. The clearance areas 12 are used to provide clearance space for the suction cup robots when they extend into or stop above the forming station, avoiding interference between the upper mold base and the suction cup robots. The number of clearance areas 12 is adapted to the number of suction cup robots; in this embodiment, there are five suction cup robots, and the upper mold base is provided with five clearance areas 12 accordingly. In addition, a limiting rod 5 is provided on the side of the upper mold base facing the lower mold base. The limiting rod 5 is opposite to the limiting hole 19 provided on the lower mold base, and the upper mold base and the lower mold base are mutually adapted.

[0115] The avoidance area 12 can be a recessed space, opening groove, or clearance notch formed on the lower side, side, or between adjacent forming punches of the upper mold base, allowing the suction cup robot to avoid the downward path of the upper mold base and forming punches during material picking, unloading, or equidistant sliding. Before the hydraulic press 2 enters the low-pressure pre-molding detection action or the formal high-pressure forming stage, the equidistant transfer module controls the suction cup robot to exit the mold closing area above the forming station to ensure that the upper mold assembly 3 can descend smoothly.

[0116] By cooperating with the equidistant transfer module and the mold closing stage switching control module, the negative pressure state of the suction cup robot and the vacuum breaking state of the material release can be correlated with the pre-mold closing load response of the corresponding forming station. This ensures that the system has the advantage of recognizing suction cup carrying material, workpiece 11 not being released, or workpiece 11 falling abnormally. This solves the problem that workpiece 11 may still enter the next mold closing if it is not released or has not entered the target station during the existing continuous transfer process.

[0117] Optionally, the mold closing stage switching control module further includes an equidistant transfer state association unit and an anomaly handling unit; the equidistant transfer state association unit is used to associate the material picking negative pressure state and material unloading vacuum breaking state of the suction cup robot with the pre-mold closing load response of the corresponding forming station.

[0118] The equidistant transfer state association unit receives the negative pressure status signal output by the negative pressure detection device of each suction cup robot, the opening status signal of the vacuum breaking valve, and the station cycle signal of the equidistant transfer module. Based on the suction cup robot number and the current transfer cycle, it determines the target forming station corresponding to that suction cup robot. Thus, the equidistant transfer state association unit can match the material handling state of a suction cup robot with the pre-molding load response formed by its target forming station during the low-pressure pre-molding detection action.

[0119] When the suction cup robot outputs a "material unloading complete" status, but the corresponding forming station does not have a valid pre-molding load response during the low-pressure pre-molding detection action, it is determined that workpiece 11 has fallen or failed to enter the target forming station. Here, "no valid pre-molding load response" means that the corresponding forming station did not generate a load response reaching the contact judgment load F_th during the low-pressure pre-molding detection action, or that its contact start position and pre-molding load both do not meet the single-piece qualified load fingerprint range of the corresponding forming station. This status indicates that although the suction cup robot performed the material unloading action, the target forming station did not detect a pressure response corresponding to the single-piece pole blank.

[0120] If the suction cup robot maintains a negative pressure state after releasing the material, and the pre-mold load response of the corresponding forming station does not meet the single-piece qualified load fingerprint, it is determined that the suction cup is carrying material or the workpiece 11 has not been released. Here, "maintaining a negative pressure state after releasing the material" means that after the vacuum valve is opened, the negative pressure detection component detects that the negative pressure inside the suction cup has not yet risen to the preset release negative pressure range, indicating that the workpiece 11 may still be held by the suction cup. If, at this time, the pre-mold load response of the corresponding target forming station does not reach the normal single-piece placement state, it indicates that the workpiece 11 has not reliably fallen into the target forming station, and it is determined that the suction cup is carrying material or the workpiece 11 has not been released.

[0121] The anomaly handling unit is used to control the suction cup robot to re-release material, control the vacuum valve to release material a second time, control the waste material suction mechanism to suction material a second time, control the unloading mechanism to remove the abnormal workpiece 11, or control the hydraulic press 2 to return and alarm according to the anomaly type. Specifically, when it is determined that the workpiece 11 has fallen or has not entered the target forming station, the anomaly handling unit controls the hydraulic press 2 to remain in a state where formal high-pressure forming is prohibited, and controls the equidistant transfer module to stop the current cycle or return to the target forming station to re-release material; when it is determined that the suction cup is carrying material or the workpiece 11 has not been released, the anomaly handling unit controls the vacuum valve to open again, and can control the auxiliary air blowing component to perform a second release; when it is determined that there is waste material residue or material jamming in the mold, the anomaly handling unit controls the waste material suction mechanism to perform a second suction; when it is determined that there is stacking, misalignment, or abnormal workpiece 11 residue, the anomaly handling unit controls the unloading mechanism or the suction cup robot to remove the abnormal workpiece 11; before the above anomaly handling is completed, the mold closing stage switching control module continuously prohibits the hydraulic press 2 from entering the formal high-pressure forming stage.

[0122] The equidistant transfer module, the pre-mold closing detection module at each workstation, and the mold closing stage switching control module work together to ensure that each round of equidistant transfer is verified by low-pressure pre-mold closing at each workstation. Only after the verification is qualified can formal high-pressure forming be allowed. This ensures that the system has the advantage of changing from "fixed-cycle mold closing" to "mold closing after status confirmation". It solves the problem that hollow materials, stacked materials, misaligned materials, or waste material residues may still be mistakenly entered into high-pressure forming in the existing multi-station pole continuous forming.

[0123] In addition, a method for continuous hydraulic forming and interlocking of new energy battery cell terminals is also provided, the forming and interlocking method comprising the following steps:

[0124] S1. The new energy battery cell electrode blanks are synchronously transferred to multiple forming stations of the hydraulic multi-station forming module through the equidistant transfer module; the multiple suction cup robots of the equidistant transfer module synchronously perform material picking, lateral movement and material release actions, so that the new energy battery cell electrode blanks in each forming station are synchronously transferred to the next forming station; after the material release is completed, the equidistant transfer module exits the mold closing area of ​​the hydraulic press 2 and outputs a transfer completion signal to the mold closing stage switching control module.

[0125] S2. Before the hydraulic press 2 performs formal high-pressure forming, the hydraulic press 2 is controlled to first perform a low-pressure pre-molding detection action. The detection pressure and detection stroke of the low-pressure pre-molding detection action are limited to a range that does not cause the new energy cell electrode blank to undergo formal plastic forming. The low-pressure pre-molding detection action includes a rapid approach section, a low-speed detection section, and a judgment and holding section in sequence. In the rapid approach section, the slider of the hydraulic press 2 descends to the preset approach position at a first speed. In the low-speed detection section, the slider of the hydraulic press 2 descends at a second speed lower than the first speed and forms a low-pressure contact with the electrode blank. In the judgment and holding section, the slider of the hydraulic press 2 is held at the preset detection position or within the preset detection pressure range so that the mold closing stage switching control module can complete the data comparison.

[0126] S3. By using the partitioned pressure detection structure set for each of the multiple forming stations, the pre-molding load response and pre-molding displacement response of each forming station are collected during the low-pressure pre-molding detection action. The pre-molding load response includes at least the contact start position, the pre-molding load and the load rise slope, and the pre-molding displacement response includes at least the micro-displacement of the station pressure seat relative to the lower mold seat.

[0127] S4. The pre-mold closing load response and pre-mold closing displacement response of each forming station are compared with the single-piece qualified load fingerprint of the corresponding forming station to determine whether each forming station is in the normal single-piece positioning state. The single-piece qualified load fingerprint includes the contact start position range, pre-mold closing load range, load rise slope range, displacement response range, and contact duration range of the corresponding forming station. The mold closing stage switching control module compares the contact start position, pre-mold closing load, load rise slope, displacement response, and contact duration collected in real time with the corresponding ranges item by item, without using weighted summation or comprehensive scoring methods.

[0128] S5. When all forming stations participating in this mold closing meet the corresponding single-piece qualified load fingerprint, the hydraulic press 2 is switched from low-pressure pre-mold closing detection action to formal high-pressure forming. When the contact start position, pre-mold closing load, load rise slope, displacement response and contact duration of each forming station are all within the single-piece qualified load fingerprint range of the corresponding forming station, the mold closing stage switching control module outputs a formal high-pressure forming control signal to the hydraulic press 2 control valve group, so that the hydraulic press 2 enters the formal high-pressure forming stage.

[0129] S6. When any forming station does not meet the corresponding single-piece qualified load fingerprint, the hydraulic press 2 is prohibited from entering the formal high-pressure forming and the hydraulic press 2 is controlled to return. When any forming station has empty material, workpiece 11 not in place, stacked material, hard foreign object residue, waste material residue, material stuck in the mold, workpiece 11 misaligned, tilted or not completely falling into the lower mold positioning area, the mold closing stage switching control module prohibits the hydraulic press 2 from switching from the low-pressure pre-mold closing detection action to the formal high-pressure forming and controls the hydraulic press 2 slider to return to the safe standby position.

[0130] By having the pre-molding detection module and the mold closing stage switching control module work together, the load difference and displacement difference between the pressure-bearing detection structures of different zones within the same forming station can be compared and judged. This ensures that the system has the advantage of identifying workpiece 11 misalignment, tilting, or local waste material elevation, and solves the problem in the prior art that it is difficult to distinguish between empty material and stacked material, and between misalignment and waste material residue in a timely manner.

[0131] S7. Based on the abnormal forming station and abnormality type that does not meet the single-piece qualified load fingerprint, perform re-feeding, secondary vacuum release, secondary waste material suction, removal of abnormal workpiece 11, or alarm shutdown. When the abnormality type is empty material or workpiece 11 not in place, control the equidistant transfer module to re-feed material; when the abnormality type is suction cup carrying material or workpiece 11 not released, control the vacuum valve to release it a second time; when the abnormality type is waste material residue or material stuck in the mold, control the waste material suction mechanism to perform secondary suction; when the abnormality type is stacked material, misaligned or tilted, control the unloading mechanism or suction cup robot to remove abnormal workpiece 11; after the abnormality is handled, re-execute the low-pressure pre-mold detection action, and only after confirming that each forming station meets the corresponding single-piece qualified load fingerprint is the hydraulic press 2 allowed to enter the formal high-pressure forming stage.

[0132] By having the pre-molding detection module and the hydraulic multi-station forming module work together, abnormalities can not only be detected by changes in the overall pressure of the hydraulic press 2, but also be located at the specific forming station. This ensures that the system has the advantages of being able to locate abnormal stations and distinguish abnormal types, thus solving the problem that existing overall pressure detection methods are unable to determine the specific abnormal station.

[0133] During each round of equidistant transfer, the downstream suction cup robot simultaneously transfers the finished product pole from the fifth final shaping station to the finished product outlet. Only after the finished product outlet confirms that the finished product is in place and the downstream suction cup robot completes the vacuum release can the mold closing stage switching control module allow the system to enter the next round of low-pressure pre-mold closing detection action.

[0134] The hydraulic multi-station forming module also includes a finished product outlet, which is located downstream of the fifth final shaping station. The distance between the finished product outlet and the fifth final shaping station is the same as the distance between two adjacent forming stations. The finished product outlet is used to receive the finished new energy battery cell terminals after final shaping by the fifth final shaping station.

[0135] In this embodiment, the multiple suction cup robots of the equidistant transfer module synchronously complete the migration of workpiece 11 during a single equidistant sliding process. The downstream suction cup robot picks up the finished electrode post from the fifth final shaping station and transfers it to the finished product exit position. The finished product exit position can be connected to a finished product unloading channel, a finished product chute, a finished product collection box, or a subsequent conveying mechanism to allow the completed electrode post to leave the hydraulic multi-station forming module. Specifically, after the fifth final shaping station completes formal high-pressure forming and the hydraulic press 2 slide returns to a safe position, the equidistant transfer module controls the downstream suction cup robot to descend to the fifth final shaping station. The suction cup body 10 picks up the finished electrode post under the action of a vacuum pump or vacuum generator. Subsequently, the sliding seat 9 moves along the sliding track 8 by one station pitch, causing the suction cup robot to move above the finished product exit position. Upon reaching the finished product exit position, the vacuum valve opens, causing the finished electrode post to detach from the suction cup body 10 and fall into the finished product exit position or the finished product unloading channel.

[0136] A finished product arrival detection device can be set at the finished product exit position. The finished product arrival detection device is used to detect whether the finished product pole has fallen into the finished product exit position or the finished product unloading channel. When the negative pressure detection device of the downstream suction cup robot detects that the negative pressure has risen to the preset release negative pressure range, and the finished product arrival detection device detects that the finished product has entered the finished product exit position, the mold closing stage switching control module determines that the finished product exit is complete. If the downstream suction cup robot still maintains a negative pressure state after releasing the material, or the finished product arrival detection device does not detect that the finished product has entered the finished product exit position, it is determined that the finished product has not been released, the suction cup is carrying material, or the finished product has fallen abnormally, and the hydraulic press 2 is prohibited from entering the next round of formal high-pressure forming.

[0137] By cooperating with the hydraulic multi-station forming module, the equidistant transfer module, and the mold closing stage switching control module, the forming stations can form a sequential linkage between continuous transfer, low-pressure pre-detection, formal high-pressure forming, and abnormal return. This ensures that the system has the advantages of both continuous production cycle and safety interlock, and solves the problem of disconnect between production cycle control and abnormal identification in existing multi-station continuous forming.

[0138] The content disclosed above is only a preferred and feasible embodiment of the present invention, and is not intended to limit the scope of protection of the present invention. Therefore, all equivalent technical changes made based on the content of the present invention specification and drawings are included within the scope of protection of the present invention. Furthermore, the elements therein can be updated as technology develops.

Claims

1. A hydraulic continuous forming interlocking system for new energy battery cell terminals, characterized in that, It includes a hydraulic multi-station forming module, an equidistant transfer module, a pre-mold closing detection module for each workstation, and a mold closing stage switching control module; the hydraulic multi-station forming module includes a hydraulic press (2), an upper mold assembly (3), a lower mold assembly (4), and multiple forming stations arranged sequentially along the transfer direction of the workpiece (11); the equidistant transfer module is used to synchronously transfer the new energy cell electrode blanks in each forming station to the next forming station; the hydraulic press (2) is configured to perform a low-pressure pre-mold closing detection action before each formal high-pressure forming; the detection pressure and detection stroke of the low-pressure pre-mold closing detection action are limited to a range that does not cause the new energy cell electrode blanks to undergo formal plastic forming; The pre-mold closing detection module for each forming station is equipped with a zoned pressure-bearing detection structure. Each zoned pressure-bearing detection structure is used to collect the pre-mold closing load response and pre-mold closing displacement response of the corresponding forming station during the low-pressure pre-mold closing detection action. The mold closing stage switching control module stores the single-piece qualified load fingerprint corresponding to each forming station. The single-piece qualified load fingerprint includes at least the contact position range, pre-mold closing load range, load rise slope range, and pre-mold closing displacement range of the corresponding forming station when the single-piece pole blank is in normal position. The mold closing stage switching control module is used to compare the pre-mold closing load response and pre-mold closing displacement response collected by each forming station during the low-pressure pre-mold closing detection action with the single-piece qualified load fingerprint of the corresponding forming station to determine whether the corresponding forming station is in the single-piece normal position state. When the pre-mold closing load response and / or pre-mold closing displacement response of any forming station does not meet the corresponding single-piece qualified load fingerprint, the mold closing stage switching control module prohibits the hydraulic press (2) from entering the formal high-pressure forming and controls the hydraulic press (2) to return; when all forming stations participating in this mold closing meet the corresponding single-piece qualified load fingerprint, the mold closing stage switching control module allows the hydraulic press (2) to switch from low-pressure pre-mold closing detection action to formal high-pressure forming.

2. The new energy battery cell electrode post hydraulic continuous forming interlocking system according to claim 1, characterized in that, The partitioned pressure testing structure includes a station pressure seat, a micro-displacement support (15), a load detection component (20), a displacement detection component (16), and a mechanical limiting component (14). The station pressure seat is located below the lower mold positioning area of ​​the corresponding forming station and is used to bear the pre-molding force generated by the corresponding forming station during the low-pressure pre-molding detection action. The micro-displacement support component (15) is located between the station pressure seat and the lower mold assembly (4) and is used to make the station pressure seat generate elastic micro-displacement during the low-pressure pre-molding detection action. The load detection component (20) is used to detect the pre-molding load response of the corresponding forming station. The displacement detection component (16) is used to detect the pre-molding displacement response of the station pressure seat. The mechanical limiting component (14) is used to form a rigid support after the elastic micro-displacement of the station pressure seat reaches the preset limit stroke, so that the forming load of the formal high-pressure forming stage bypasses or partially bypasses the load detection component (20).

3. The new energy battery cell electrode post hydraulic continuous forming interlocking system according to claim 2, characterized in that, The micro-displacement support (15) includes at least one of an elastic pad, a disc spring assembly, an elastic support column, or a flexible hinge support.

4. The new energy battery cell electrode post hydraulic continuous forming interlocking system according to claim 3, characterized in that, The single-piece qualified load fingerprint includes the contact start position range, pre-mold load range, load rise slope range, displacement response range, and contact duration range of the corresponding forming station. The mold closing stage switching control module is used to determine the contact start position of the corresponding forming station according to the position of the slider of the hydraulic press (2), to determine the pre-mold closing load and load rise slope according to the load change output by the load detection component (20), and to determine the displacement response according to the displacement change output by the displacement detection component (16). When the contact start position, pre-mold load, load rise slope, displacement response, and contact duration are all within the single-piece qualified load fingerprint range of the corresponding forming station, the forming station is determined to be in the single-piece normal positioning state.

5. The new energy battery cell electrode post hydraulic continuous forming interlocking system according to claim 4, characterized in that, The mold closing stage switching control module is used to identify abnormal states according to the following rules: when the contact start position of the corresponding forming station is later than the contact start position range in the single-piece qualified load fingerprint, and the pre-mold closing load is lower than the preset load lower limit, it is determined that there is no material or the workpiece (11) is not in place; when the contact start position of the corresponding forming station is earlier than the contact start position range in the single-piece qualified load fingerprint, and the load rise slope is higher than the preset slope upper limit, it is determined that there is stacked material or hard foreign matter residue; when the pre-mold closing load response of the corresponding forming station suddenly rises and exceeds the low-pressure detection load upper limit, it is determined that there is waste material residue or material jamming in the mold; when the displacement response of the corresponding forming station deviates from the displacement response range in the single-piece qualified load fingerprint, it is determined that the workpiece (11) is misaligned, tilted, or has not completely fallen into the lower mold positioning area.

6. The new energy battery cell electrode post hydraulic continuous forming interlocking system according to claim 5, characterized in that, At least one forming station is provided with two or more partitioned pressure testing structures; the partitioned pressure testing structures are distributed along the outer periphery, offset part, step part or middle rod part of the workpiece (11) at the corresponding forming station; The mold closing stage switching control module is used to compare the load difference and / or displacement difference between different partition pressure detection structures in the same forming station; when the load difference exceeds the preset load deviation threshold, or the displacement difference exceeds the preset displacement deviation threshold, it is determined that the corresponding forming station has a workpiece (11) misalignment, tilting, or local waste material elevation state, and the hydraulic press (2) is prohibited from entering the formal high pressure forming stage.

7. The new energy battery cell electrode post hydraulic continuous forming interlocking system according to claim 6, characterized in that, The hydraulic multi-station forming module includes a first pre-positioning and shaping station, a second pre-forming station, a third compaction and forming station, a fourth contour correction station, and a fifth final shaping station. The mold closing stage switching control module stores the qualified load fingerprints of different single pieces corresponding to the first pre-positioning shaping station, the second pre-forming station, the third compaction forming station, the fourth contour correction station, and the fifth final shaping station. Different single-piece qualified load fingerprints are adapted to the height, contact area, local stiffness, pre-mold contact position and pre-mold load variation characteristics of the pole blank at different forming stages.

8. The new energy battery cell electrode post hydraulic continuous forming interlocking system according to claim 7, characterized in that, The low-pressure pre-mold closing detection action includes a rapid approach section, a low-speed detection section, and a judgment and holding section. In the rapid approach section, the hydraulic press (2) slider descends to a preset approach position at a first speed. In the low-speed detection section, the hydraulic press (2) slider descends at a second speed lower than the first speed, and the pre-mold closing load response and pre-mold closing displacement response of each forming station are collected by the pre-mold closing detection module of each station. In the judgment and holding section, the hydraulic press (2) slider is held at a preset detection position or within a preset detection pressure range so that the mold closing stage switching control module can complete the single-piece qualified load fingerprint comparison. The detection pressure, detection stroke, and judgment holding time of the low-pressure pre-molding detection action are all limited to a range that prevents the new energy cell electrode blank from undergoing formal plastic forming.

9. The new energy battery cell electrode post hydraulic continuous forming interlocking system according to claim 8, characterized in that, The mold closing stage switching control module also includes an equidistant transfer state association unit and an anomaly handling unit; the equidistant transfer state association unit is used to associate the material picking negative pressure state and material unloading vacuum breaking state of the suction cup robot with the pre-mold closing load response of the corresponding forming station. When the suction cup robot outputs the material unloading completion status and the corresponding forming station has no effective pre-forming load response during the low-pressure pre-forming detection action, it is determined that the workpiece (11) has fallen or has not entered the target forming station. When the suction cup robot still maintains a negative pressure state after releasing the material, and the pre-mold load response of the corresponding forming station does not meet the single-piece qualified load fingerprint, it is determined that the suction cup is carrying material or the workpiece (11) has not been released. The abnormality handling unit is used to control the suction cup robot to re-release material, control the vacuum valve to release material a second time, control the waste material suction mechanism to suction material a second time, control the material return mechanism to remove abnormal workpiece (11), or control the hydraulic press (2) to return to alarm according to the abnormality type.

10. A hydraulic continuous forming interlocking method for new energy battery cell terminals, comprising a system for continuous forming of new energy battery cell terminals using a hydraulic press (2) according to claim 9, characterized in that, The forming interlocking method includes the following steps: S1. The new energy battery cell electrode blank is synchronously transferred to multiple forming stations of the hydraulic multi-station forming module through the equidistant transfer module. S2. Before the hydraulic press (2) performs formal high-pressure forming, the hydraulic press (2) is controlled to perform low-pressure pre-molding detection action. The detection pressure and detection stroke of the low-pressure pre-molding detection action are limited to a range that does not cause the new energy cell electrode blank to undergo formal plastic forming. S3. By using the partitioned pressure-bearing detection structure set up for multiple forming stations respectively, the pre-mold load response and pre-mold displacement response of each forming station are collected during the low-pressure pre-mold detection action. S4. Compare the pre-mold closing load response and pre-mold closing displacement response of each forming station with the single-piece qualified load fingerprint of the corresponding forming station to determine whether each forming station is in the normal single-piece position. S5. When all forming stations participating in this mold closing meet the corresponding single-piece qualified load fingerprint, control the hydraulic press (2) to switch from low-pressure pre-mold closing detection action to formal high-pressure forming. S6. When any forming station does not meet the corresponding single-piece qualified load fingerprint, the hydraulic press (2) is prohibited from entering the formal high-pressure forming and the hydraulic press (2) is controlled to return. S7. Based on the abnormal forming station and abnormal type that does not meet the single-piece qualified load fingerprint, perform re-feeding, secondary vacuum release, secondary waste suction, removal of abnormal workpiece (11) or alarm shutdown.

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