A method and system for stamping and destacking automobile beams based on dual-dimensional magnetic control

Abstract

This invention provides a method and system for destacking stamped automotive beams based on dual-dimensional magnetic force control. The method includes acquiring workpiece parameters of the workpiece to be destacking; determining the number of magnets to be activated according to the workpiece length in a preset magnet quantity mapping rule; and determining a target magnetic force intensity level according to the workpiece thickness in a preset magnetic force intensity mapping relationship. It then determines whether the workpiece meets the linkage condition. If the linkage condition is met, the number of magnets to be activated is adjusted to the linkage quantity value, and the target magnetic force intensity level is adjusted to the linkage intensity level. Otherwise, the determined number of magnets to be activated and the target magnetic force intensity level remain unchanged as the final control parameters. Based on the final control parameters, the corresponding number and position of magnets are activated, and the magnetization intensity of the activated magnets is adjusted to the output value corresponding to the target magnetic force intensity level. This effectively overcomes a long-standing technical bottleneck in the industry.

Description

Technical Field

[0001] This invention belongs to the field of automotive frame processing technology, specifically relating to a method and system for stamping and destacking automotive frames based on dual-dimensional magnetic force control. Background Technology

[0002] The chassis frame is a core load-bearing structural component of commercial vehicles such as pickup trucks, light trucks, and heavy trucks. A single chassis frame sheet typically exceeds 6 meters in length, with a thickness generally between 4 and 8 millimeters, and comes in various specifications and is quite heavy. In the stamping production process of automotive chassis frames, the destacking process is a crucial pre-stamping step. It requires a destacking robot driving magnetic chucks to pick up the chassis frame sheets one by one from the stack and precisely place them onto the stamping die. Due to the significant differences in length, thickness, and weight of the chassis frame sheets, and the various states of the sheet surface such as rust, oil film, and coatings, the destacking equipment places extremely high demands on the precision of magnetic control, adaptability to operating conditions, and energy efficiency.

[0003] There are two mainstream magnetic control technology paths in the current stamping and destacking field, but the industry has long regarded them as independent solutions.

[0004] The first technical approach is magnet grouping control technology. This technology divides several magnets on the destacking suction cup into multiple groups, with each group's independent controller managing the magnet's activation status. Depending on the length of the sheet material to be processed, one or more groups of magnets are activated to adjust the spatial coverage of the sheet surface. However, this technology has the following drawbacks: the number of activated magnets and their magnetic strength are independent. Even if the number of activated magnets is reduced, the magnetic strength of each magnet remains at 100% of its rated value. This results in the situation where, when processing thin sheets with a thickness of 4 mm to 5 mm, the magnetic force of a single magnet can still pull up adjacent sheets, causing a double-sheet suction failure with a double-sheet suction rate as high as approximately 8%. Furthermore, due to the lack of fine-tuning of magnetic strength, the energy-saving effect is limited, with the overall energy saving typically only reaching 15% to 20%.

[0005] The second technical approach is fixed-level magnetic intensity adjustment. This technology uses a programmable logic controller to apply three fixed intensity levels (strong, medium, and weak) to all magnets to accommodate sheet metal of different thicknesses. However, this technology also has significant drawbacks: the magnetic intensity is adjusted uniformly for all magnets, making it impossible to dynamically adjust the number of magnets in use based on the actual length of the sheet metal; when handling short beams of 5 to 6 meters, all magnets remain active, resulting in a magnet coverage area far exceeding the actual size of the sheet metal, generating a large amount of ineffective energy consumption, with an energy saving effect of only about 12%; furthermore, this technology cannot adaptively compensate for changes in the surface condition of the sheet metal, making it difficult to guarantee the reliability of adsorption.

[0006] The fundamental flaw in these two technical approaches lies in the fact that the industry has long treated the control of the number of magnets used and the adjustment of magnetic strength as separate technical approaches with different objectives, consistently lacking a control scheme that integrates the two. This technological blind spot leads to a contradictory dilemma when dealing with special-specification beams and plates that are both long and thin: if group control is used alone, the problem of double material absorption in thin plates cannot be fundamentally eliminated; if strength adjustment is used alone, insufficient coverage of long plates will lead to a destacking failure rate exceeding 5%. The mutually restrictive needs of these two approaches cannot be met simultaneously under a single-dimensional control framework, and the industry has long relied on operators to repeatedly adjust the controls manually, with each adjustment taking about 15 minutes, severely restricting the improvement of production efficiency.

[0007] At the same time, the existing solution lacks a precise parameter matching mechanism, and the energy waste caused by the continuous operation of ineffective magnets is prominent, with ineffective energy consumption accounting for up to 35%. When there are changes in the condition of the sheet material such as rust, the system cannot automatically compensate for the fluctuation of the adsorption force, and manual intervention is required to restore normal destacking.

[0008] Therefore, existing technologies suffer from systemic defects when processing multi-specification automotive beam panels, such as a single control dimension, lack of a two-dimensional collaborative mechanism, insufficient adaptive capability, and low energy efficiency. There is an urgent need for a destacking control method that can coordinate the control of the number of magnets activated and the adjustment of magnetic force to simultaneously achieve the technical goals of preventing double material adsorption, ensuring stable adsorption, and reducing energy consumption. Summary of the Invention

[0009] To address the aforementioned technical problems, this invention provides a method and system for stamping and destacking automobile beams based on dual-dimensional magnetic force control, which solves the technical problems in the prior art.

[0010] On the one hand, the invention provides the following technical solution: a method for stamping and destacking automobile beams based on dual-dimensional magnetic force control, the method comprising: Obtain the workpiece parameters of the workpiece to be destacking, including the workpiece length and workpiece thickness; Based on the workpiece length, the number of magnets to be activated is determined in a preset magnet quantity mapping rule, and based on the workpiece thickness, the target magnetic intensity level is determined in a preset magnetic intensity mapping relationship. Determine whether the workpiece meets the linkage condition; if the linkage condition is met. Then adjust the number of magnets activated to the linkage number value and adjust the target magnetic intensity level to the linkage intensity level; otherwise, keep the determined number of magnets activated and the target magnetic intensity level unchanged, and use the determined number of magnets activated and the target magnetic intensity level as the final control parameters. According to the final control parameters, the corresponding number and position of magnets are activated, and the magnetization intensity of the activated magnets is adjusted to the output value corresponding to the target magnetic intensity level, thereby completing the adsorption of the workpiece.

[0011] Compared to existing technologies, the beneficial effects of this application are as follows: It constructs a collaborative dual-dimensional control system that integrates magnet quantity control and magnetic force intensity adjustment. The quantity dimension is driven by the sheet length, and the intensity dimension is driven by the sheet thickness, ensuring that the two control quantities operate synchronously based on the sheet parameters, rather than independently. Experimental verification shows that in destacking scenarios involving special sheet specifications with lengths greater than 6 meters and thicknesses less than 5 millimeters, which cannot be addressed by existing single-dimensional solutions, this invention's dual-dimensional collaborative control scheme produces unexpected technical effects that cannot be achieved by superimposing single-dimensional solutions. The double-material absorption rate is reduced from approximately 8% in existing technologies to 0%, and the destacking success rate is increased from approximately 85% to over 98%, effectively breaking through a long-standing technical bottleneck in the industry.

[0012] Furthermore, the preset magnetic intensity mapping relationship divides the workpiece thickness into at least two intervals, with different intervals corresponding to different magnetic intensity levels; the smaller the interval in which the workpiece thickness is located, the lower the corresponding magnetic intensity level.

[0013] Furthermore, the at least two intervals include three thickness intervals and corresponding magnetic intensity levels, specifically: When the workpiece thickness is in the range of 3.5 mm to 5.5 mm, the corresponding weak setting corresponds to a magnetic strength of 25% to 40% of the rated value. When the workpiece thickness is in the range of 5.5 mm to 6.5 mm, corresponding to the medium range, the magnetic strength is 50% to 70% of the rated value; When the workpiece thickness is in the range of 6.5 mm to 8.5 mm, the corresponding high-strength setting corresponds to 85% to 100% of the rated magnetic force. Furthermore, the linkage condition is: the length of the workpiece is greater than a preset length threshold, and the thickness of the workpiece is less than a preset thickness threshold; The preset length threshold is 5m to 7m, and the preset thickness threshold is 4mm to 6mm; When the linkage conditions are met, the linkage quantity is 50% to 75% of the total number of magnets, and the linkage intensity level is 20% to 40% of the rated magnetic force. When the linkage condition is met, the linkage quantity value is less than the number of magnets activated obtained by mapping the workpiece length alone, and the linkage intensity level is lower than the target magnetic force intensity level obtained by mapping the workpiece thickness alone.

[0014] Furthermore, the method also includes: During the adsorption and handling of the workpiece, the operating current of each magnet is monitored in real time. When the operating current of any magnet deviates from the rated value by more than 10% to 20%, an adsorption abnormality is determined to exist. In response to the adsorption anomaly, perform at least one compensation operation, either by fine-tuning the magnetic strength of the corresponding magnet or by activating a backup magnet, until the operating current returns to the normal range.

[0015] Furthermore, the magnetization intensity of the activated magnet can be adjusted by at least one of adjusting the magnetization voltage or pulse width modulation. When using the adjustable magnetization voltage method, the magnetization voltage accuracy is controlled within ±1% to ±5% of the rated value; When using pulse width modulation, the output of magnetization energy is controlled by adjusting the duty cycle. The duty cycle for the weak setting is 20% to 40%, for the medium setting it is 50% to 70%, and for the strong setting it is 85% to 100%.

[0016] Furthermore, the acquisition of workpiece parameters of the workpiece to be destacking is achieved through any of the following methods: The host computer can automatically retrieve the corresponding parameters by selecting the workpiece model from the preset formula parameter library.

[0017] Secondly, this invention provides the following technical solution: a dual-dimensional magnetic force-controlled automotive beam stamping and destacking system, the system comprising: The acquisition module is used to acquire the workpiece parameters of the workpiece to be destacking, the workpiece parameters including the workpiece length and the workpiece thickness; The determination module is used to determine the number of magnets to be activated based on the length of the workpiece in a preset magnet number mapping rule, and to determine the target magnetic strength level based on the thickness of the workpiece in a preset magnetic strength mapping relationship. The judgment module is used to determine whether the workpiece meets the linkage condition; if the linkage condition is met. As a module, it is used to adjust the number of magnets activated to the linkage number value and adjust the target magnetic strength level to the linkage strength level; otherwise, it keeps the determined number of magnets activated and the target magnetic strength level unchanged, and uses the determined number of magnets activated and the target magnetic strength level as the final control parameters. The output module is used to activate the corresponding number and position of magnets according to the final control parameters, and adjust the magnetization intensity of the activated magnets to the output value corresponding to the target magnetic intensity level, so as to complete the adsorption of the workpiece.

[0018] Thirdly, the invention provides the following technical solution: a computer, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the above-described method for stamping and destacking automobile beams based on dual-dimensional magnetic force control.

[0019] Fourthly, the invention provides the following technical solution: a storage medium storing a computer program, which, when executed by a processor, implements the above-described method for stamping and destacking automobile beams based on dual-dimensional magnetic force control. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A flowchart of the automobile beam stamping and destacking method based on dual-dimensional magnetic control provided in the first embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the magnet actuator provided in the first embodiment of the present invention; Figure 3 The structural block diagram of the automobile beam stamping and destacking system based on dual-dimensional magnetic force control provided in the second embodiment of the present invention; Figure 4 This is a schematic diagram of the hardware structure of a computer provided in the third embodiment of the present invention.

[0022] The embodiments of the present invention will be further described below with reference to the accompanying drawings. Detailed Implementation

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals and data refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0024] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] The automotive beam stamping and destacking system based on dual-dimensional magnetic control provided by this invention consists of four major functional modules: a host computer, a control unit (programmable logic controller), a magnet controller, and a magnet actuator. These modules are connected sequentially via an industrial communication bus to form a complete closed-loop control circuit.

[0027] Example 1 In the first embodiment of the present invention, please refer to Figure 1 As shown, a method for stamping and destacking automotive beams based on dual-dimensional magnetic force control includes the following steps S01 to S04: S01, Obtain the workpiece parameters of the workpiece to be destacking, the workpiece parameters including workpiece length and workpiece thickness; In this embodiment, during production changeover, the operator selects the current beam model to be destacking from the recipe parameter library via a host computer touchscreen. The host computer automatically retrieves the preset workpiece parameters corresponding to that model and sends the parameters to the control unit via the industrial communication bus. After receiving and parsing the workpiece parameters, the control unit extracts two key control variables: workpiece length and workpiece thickness, which serve as the sole input for subsequent two-dimensional calculations. The weight and surface condition fields in the workpiece parameters are simultaneously transmitted for reference judgment during the dynamic compensation stage.

[0028] S02, based on the length of the workpiece, determine the number of magnets to be activated in a preset magnet number mapping rule, and based on the thickness of the workpiece, determine the target magnetic strength level in a preset magnetic strength mapping relationship; Specifically, the preset magnetic intensity mapping relationship divides the workpiece thickness into at least two intervals, with different intervals corresponding to different magnetic intensity levels; the smaller the interval in which the workpiece thickness is located, the lower the corresponding magnetic intensity level.

[0029] More specifically, the at least two intervals include three thickness intervals and corresponding magnetic intensity levels, specifically: When the workpiece thickness is in the range of 3.5 mm to 5.5 mm, the corresponding weak setting corresponds to a magnetic strength of 25% to 40% of the rated value. When the workpiece thickness is in the range of 5.5 mm to 6.5 mm, corresponding to the medium range, the magnetic strength is 50% to 70% of the rated value; When the workpiece thickness is in the range of 6.5 mm to 8.5 mm, the corresponding strong setting has a magnetic strength of 85% to 100% of the rated value.

[0030] like Figure 2 There are 14 magnetic actuators in total. Each actuator integrates three functional components: an electromagnet body, an electronic control module, and a working status feedback unit. The electromagnet body generates magnetic force to attract the workpiece under the magnetization command and quickly eliminates residual magnetism to release the workpiece under the demagnetization command. The electronic control module receives the magnetization and demagnetization commands from the magnet controller and precisely controls the output of the magnetization voltage or pulse width modulation signal. The working status feedback unit collects the working current of the actuator in real time and reports the current data to the control unit at a fixed sampling period, serving as the real-time monitoring basis for the dynamic compensation logic. The 14 magnetic actuators are arranged at equal intervals along the longitudinal direction of the destacking line, covering the entire length of the beam sheet. By selectively activating several actuators, flexible coverage and adaptation to workpieces of different lengths can be achieved.

[0031] In this embodiment, after receiving the workpiece parameters, the control unit synchronously starts the calculation of parameters in the quantity dimension and the strength dimension. The calculation of the two dimensions is completed in parallel within the same control cycle without waiting for each other.

[0032] In terms of quantity, the control unit determines the number of magnets to be activated based on the workpiece length by querying the magnet quantity mapping rule. In this embodiment, the specific correspondence of the magnet quantity mapping rule is as follows: When the workpiece length is less than or equal to 6 meters, the number of magnets to be activated is determined to be 9 (i.e., 5 in group A and 4 in group B [Note: Groups A and B are arranged on both sides, with the sheet metal placed in the middle, so the sheet metal is generally half in group A and half in group B.], or other coverage distribution schemes can be used); when the workpiece length is greater than 6 meters, the number of magnets to be activated is determined to be 14 (i.e., both groups A and B are activated). The above mapping rule can be adjusted according to the actual magnet spacing and workpiece size distribution on the production line; this embodiment uses this as a typical scheme for illustration.

[0033] In terms of strength, the control unit queries a preset magnetic force intensity mapping table based on the workpiece thickness to determine the target magnetic force intensity level. This mapping table divides the workpiece thickness into three intervals, and the recommended magnetic force intensity, verification results, and comparison data with the linear control scheme for each interval are detailed in Table 1.

[0034] Table 1. Experimental verification data on the mapping relationship between sheet thickness and magnetic strength. (Based on more than 200 orthogonal experiments on the 5000T production line of Jiangling Xiaolan Stamping Plant, with each group repeated 10 times)

[0035] Based on the above five sets of experimental data, the three-level mapping relationship (weak / medium / strong) established in this invention shows the most significant improvement in the double material absorption rate in the 4mm to 5mm thin plate range compared to the linear control scheme (reducing from 8% to 12.5% ​​to 0%), verifying the technical superiority of the graded nonlinear mapping scheme over the linear scheme.

[0036] S03, determine whether the workpiece meets the linkage condition. If the linkage condition is met, adjust the number of magnets activated to the linkage number value and adjust the target magnetic strength level to the linkage strength level. Otherwise, keep the determined number of magnets activated and the target magnetic strength level unchanged. Use the determined number of magnets activated and the target magnetic strength level as the final control parameters. Specifically, the linkage condition is: the length of the workpiece is greater than a preset length threshold, and the thickness of the workpiece is less than a preset thickness threshold; The preset length threshold is 5m to 7m, and the preset thickness threshold is 4mm to 6mm; When the linkage conditions are met, the linkage quantity is 50% to 75% of the total number of magnets, and the linkage intensity level is 20% to 40% of the rated magnetic force. When the linkage condition is met, the linkage quantity value is less than the number of magnets activated obtained by mapping the workpiece length alone, and the linkage intensity level is lower than the target magnetic force intensity level obtained by mapping the workpiece thickness alone.

[0037] In this embodiment, after the dual-dimensional parameters are calculated, the control unit immediately enters the collaborative linkage determination stage to determine whether the current workpiece simultaneously meets the following two conditions: Condition 1, the workpiece length is greater than a preset length threshold (set to 6 meters in this embodiment); Condition 2, the workpiece thickness is less than a preset thickness threshold (set to 5 millimeters in this embodiment). Linkage adjustment is triggered only when both conditions are met simultaneously; if either condition is not met, linkage adjustment is not triggered.

[0038] If the determination result indicates that a linkage adjustment has been triggered, the control unit will simultaneously execute the following two operations. Both operations must be issued within the same command frame and cannot be executed in steps: Operation 1: Adjust the number of magnets used from the quantity dimension (14) to the linkage quantity value (9) to reduce the number of magnets covered and control the overall adsorption force of the individual magnets on the workpiece within a safe range. Operation 2: Maintain or adjust the target magnetic strength level from the value calculated by the strength dimension to the linkage strength level (weak level, 25% to 40% of the rated value). While controlling the adsorption force of individual magnets, further reduce the overall adsorption force to prevent the thin plates from being picked up by overlapping.

[0039] The technical effect produced by the combined execution of the two operations has been experimentally verified to be superior to the sum of the effects of any single operation executed alone: ​​when the number of magnets is reduced to 9 (with the strength unchanged, 100%), the double-material absorption rate of the thin plate is still 5%; when the magnetic strength is reduced to the weak setting (with the number unchanged, 14), the double-material absorption rate drops to 3%; and when the two operations are executed simultaneously, the double-material absorption rate drops to 0%, producing an unexpected synergistic technical effect.

[0040] The technical effect produced by the coordinated execution of the above two operations, verified by a specific comparative experiment, is significantly better than the effect of executing any single operation alone. To fully demonstrate the technical superiority of the dual-dimensional collaborative control scheme, this invention specifically designed a four-scheme comparative experiment. For a typical 7.2m × 4.5mm "long and thin" sheet material (typical working condition of linkage triggering), under the same production conditions, the traditional overall control scheme, the separate control scheme, the magnetic adjustment scheme, and the dual-dimensional collaborative scheme of this invention were tested respectively. Each group was tested 100 times. The experimental results are detailed in Table 2: Table 2 Comparison Experiment of Two-Dimensional Synergistic Effect (Processing 7.2m × 4.5mm "long and thin" sheet materials, 100 tests per group)

[0041] If the determination result is that no linkage adjustment is triggered, the final control parameter is directly calculated based on the number of magnets used and the target magnetic intensity level calculated based on the intensity dimension, without the need for correction.

[0042] S04. According to the final control parameters, activate the corresponding number and position of magnets, and adjust the magnetization intensity of the activated magnets to the output value corresponding to the target magnetic intensity level to complete the adsorption of the workpiece.

[0043] Specifically, the adjustment of the magnetization intensity of the activated magnet is achieved by adjusting the magnetization voltage or pulse width modulation at least one of the following methods; When using the adjustable magnetization voltage method, the magnetization voltage accuracy is controlled within ±1% to ±5% of the rated value; When using pulse width modulation, the output of magnetization energy is controlled by adjusting the duty cycle. The duty cycle for the weak setting is 20% to 40%, for the medium setting it is 50% to 70%, and for the strong setting it is 85% to 100%.

[0044] In this embodiment, the control unit synchronously sends the final determined control parameters—the number of magnets activated and the target magnetic intensity level—to magnet controller A and magnet controller B via the industrial communication bus, forming two parallel control signals: a sub-control command and an intensity adjustment command.

[0045] After receiving the command, the magnet controller precisely activates the corresponding magnet actuators based on the magnet activation quantity command. Unactivated magnet actuators remain in a power-off standby state, generating no magnetic force output, thus reducing unnecessary energy consumption. Simultaneously, according to the magnetic force intensity level command, the magnetization voltage (or pulse width modulation duty cycle) of all activated magnet actuators is adjusted to the corresponding target value. The magnetization process is completed sequentially according to a preset timing sequence, with the timing accuracy controlled within ±0.1 seconds to ensure consistency in the magnetic force establishment time of each actuator and avoid unbalanced adsorption due to timing deviations.

[0046] Alternatively, the method may further include: During the adsorption and handling of the workpiece, the operating current of each magnet is monitored in real time. When the operating current of any magnet deviates from the rated value by more than 10% to 20%, an adsorption abnormality is determined to exist. In response to the adsorption anomaly, perform at least one compensation operation, either by fine-tuning the magnetic strength of the corresponding magnet or by activating a backup magnet, until the operating current returns to the normal range.

[0047] In an alternative embodiment, after the magnetic actuator completes magnetization and begins adsorbing the workpiece, the system enters a continuous monitoring state. The operating status feedback unit of each magnetic actuator reports its real-time operating current value to the control unit at a fixed sampling period (typically 50 milliseconds). The control unit compares the real-time current value of each actuator with its rated current value and calculates the deviation.

[0048] When the operating current of any magnetic actuator deviates from the rated value by more than 10% to 20%, the control unit determines that the actuator has an adsorption abnormality. The causes of the abnormality may include, but are not limited to, the following: rust area on the workpiece surface exceeding 10%, oil film on the workpiece surface leading to reduced magnetic permeability, and localized deformation of the workpiece causing an increased adsorption gap. In response to the above abnormalities, the control unit automatically selects and executes at least one of the following compensation strategies: Strategy 1: Issues a fine-tuning command to the magnet controller corresponding to the abnormal actuator, increasing the magnetization voltage (or pulse width modulation duty cycle) by no more than 15% from the current setting to compensate for insufficient adsorption force; Strategy 2: Activates a nearby, unused backup magnetic actuator to increase the overall adsorption contact area. After manual confirmation of the above compensation strategies, the system continues to monitor the operating current after compensation until the current of all actuators returns to the normal range, at which point the compensation is considered complete.

[0049] After the workpiece is firmly attracted and stabilized, the destabilizing robot transports it from the stack location to the conveyor belt. Once the workpiece is in place, the control unit receives a demagnetization command from the host computer and sends a demagnetization command to the magnet controller. The magnet controller controls all activated magnet actuators to demagnetize sequentially according to a preset demagnetization sequence. The demagnetization timing accuracy is also controlled within ±0.05 seconds to ±0.2 seconds to ensure smooth release of the workpiece and avoid workpiece bouncing or position displacement due to rapid demagnetization. After demagnetization is completed, all magnet actuators return to the power-off standby state, the control unit clears the control parameter cache for this destabilization, and the system resets to the initial state awaiting the next workpiece parameter input, ready to execute the next destabilization cycle.

[0050] Optionally, the acquisition of workpiece parameters of the workpiece to be destacking can be achieved through any of the following methods: The host computer selects the workpiece model from the preset formula parameter library and automatically retrieves the corresponding parameters. In summary, a method for stamping and destacking automotive beams based on dual-dimensional magnetic force control has the following advantages: This invention constructs a collaborative two-dimensional control system that integrates magnet quantity control and magnetic force intensity adjustment. The quantity dimension is driven by sheet length, and the intensity dimension by sheet thickness, ensuring that the two control quantities operate synchronously based on sheet parameters, rather than independently. Experimental verification shows that in destacking scenarios involving special sheet specifications (length greater than 6 meters, thickness less than 5 millimeters), which cannot be addressed by existing single-dimensional solutions, this invention's two-dimensional collaborative control scheme produces unexpected technical effects that cannot be achieved by superimposing single-dimensional solutions. The double-material absorption rate is reduced from approximately 8% in existing technologies to 0%, and the destacking success rate is increased from approximately 85% to over 98%, effectively overcoming a long-standing technical bottleneck in the industry.

[0051] By using a preset magnetic strength mapping relationship, the sheet thickness is precisely mapped to the corresponding magnetic strength level. In particular, a weak level (25% to 40% of the rated value) is set for thin sheets of 4 mm to 5 mm, strictly controlling the adsorption force of individual magnets below the critical threshold. After 18 consecutive months and a total of 320,000 destacking industrial verifications, the number of double-material adsorption failures was zero, fundamentally eliminating the risk of stamping die damage, sheet waste, and production line downtime caused by double-material adsorption.

[0052] Through a dual-dimensional precision matching mechanism, only the minimum necessary number of magnets adapted to the sheet length are activated, while the magnetic strength is precisely adjusted to the lowest suitable level to meet the adsorption requirements. This avoids the energy waste caused by the full operation and excessive strength of magnets in existing technologies. Compared to existing single-dimensional control solutions, the overall energy consumption can be reduced by more than 35%, effectively reducing the operating costs of the stamping production line.

[0053] Example 2 like Figure 3 As shown, in a second embodiment of the present invention, a dual-dimensional magnetic force-controlled automotive beam stamping and destacking system is provided, the system comprising: The acquisition module 10 is used to acquire the workpiece parameters of the workpiece to be destacking, the workpiece parameters including the workpiece length and the workpiece thickness; The determining module 20 is used to determine the number of magnets to be activated according to the length of the workpiece in a preset magnet number mapping rule, and to determine the target magnetic strength level according to the thickness of the workpiece in a preset magnetic strength mapping relationship. The judgment module 30 is used to determine whether the workpiece meets the linkage condition; if the linkage condition is met. As module 40, it is used to adjust the number of magnets activated to the linkage number value and adjust the target magnetic intensity level to the linkage intensity level; otherwise, it keeps the determined number of magnets activated and the target magnetic intensity level unchanged, and uses the determined number of magnets activated and the target magnetic intensity level as the final control parameters. The output module 50 is used to activate the corresponding number and position of magnets according to the final control parameters, and adjust the magnetization intensity of the activated magnets to the output value corresponding to the target magnetic intensity level, so as to complete the adsorption of the workpiece.

[0054] The automotive beam stamping and destacking system based on dual-dimensional magnetic control provided in this embodiment of the invention has the same implementation principle and technical effect as the aforementioned method embodiment. For the sake of brevity, any parts not mentioned in the system embodiment can be referred to the corresponding content in the aforementioned method embodiment.

[0055] Example 3 like Figure 4As shown, in the third embodiment of the present invention, the present invention provides the following technical solution: a computer, including a memory 202, a processor 201, and a computer program stored in the memory 202 and executable on the processor 201, wherein the processor 201 executes the computer program to implement the above-described method for stamping and destacking automobile beams based on dual-dimensional magnetic force control.

[0056] Specifically, the processor 201 may include a central processing unit, a specific integrated circuit, or one or more integrated circuits that can be configured to implement the embodiments of this application.

[0057] Memory 202 may include a large-capacity memory for data or instructions. For example, and not limitingly, memory 202 may include a hard disk drive, floppy disk drive, solid-state drive, flash memory, optical disk drive, magneto-optical disk drive, magnetic tape drive, or Universal Serial Bus drive, or a combination of two or more of these. Where appropriate, memory 202 may include removable or non-removable media. Where appropriate, memory 202 may be internal or external to a data processing device. In a particular embodiment, memory 202 is non-volatile memory. In a particular embodiment, memory 202 includes read-only memory and random access memory (ROM). Where appropriate, the ROM may be a mask-programmed ROM, a programmable ROM, an erasable PROM, an electrically erasable PROM, an electrically rewritable ROM, or flash memory, or a combination of two or more of these. Where appropriate, the RAM may be static random access memory (SRAM) or dynamic random access memory (DRAM), wherein DRAM may be fast page-mode DRAM, extended data output DRAM, synchronous DRAM, etc.

[0058] The memory 202 can be used to store or cache various data files that need to be processed and / or communicated, as well as possible computer program instructions executed by the processor 201.

[0059] The processor 201 reads and executes the computer program instructions stored in the memory 202 to implement the above-mentioned method for stamping and destacking automobile beams based on dual-dimensional magnetic force control.

[0060] In some embodiments, the computer may further include a communication interface 203 and a bus 200. For example, Figure 4 As shown, the processor 201, memory 202, and communication interface 203 are connected through bus 200 and complete communication with each other.

[0061] The communication interface 203 is used to enable communication between the various modules, devices, units, and / or equipment in the embodiments of this application. The communication interface 203 can also enable data communication with other components such as external devices, image / data acquisition devices, databases, external storage, and image / data processing workstations.

[0062] Bus 200 includes hardware, software, or both, that couples computer components together. Bus 200 includes, but is not limited to, at least one of the following: data bus, address bus, control bus, expansion bus, local bus. For example, and not limitingly, bus 200 may include a graphics acceleration interface or other graphics bus, an enhanced industry standard architecture bus, a front-side bus, HyperTransport interconnect, an industry standard architecture bus, a wireless bandwidth interconnect, a low pin count bus, a memory bus, a WeChat architecture bus, a peripheral component interconnect bus, a PCI Express bus, a Serial Advanced Technology Attached Bus, a Video Electronics Standards Association local bus, or other suitable buses, or combinations of two or more of these. Where appropriate, bus 200 may include one or more buses. Although specific buses are described and illustrated in embodiments of this application, this application contemplates any suitable bus or interconnect.

[0063] Example 4 In the fourth embodiment of the present invention, in conjunction with the above-described method for stamping and destacking automobile beams based on dual-dimensional magnetic force control, the present invention provides the following technical solution: a storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the above-described method for stamping and destacking automobile beams based on dual-dimensional magnetic force control.

[0064] Those skilled in the art will understand that the data in the flowchart, or logic and / or steps otherwise described herein, for example, can be considered as a sequenced data table of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device. For the purposes of this specification, "computer-readable medium" can mean any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device.

[0065] More specific examples of readable media include: electrical connections with one or more wires, portable computer disk drives, random access memory, read-only memory, erasable and editable read-only memory, fiber optic devices, and portable optical disc read-only memory. Additionally, computer-readable media can even be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in computer memory.

[0066] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (FPGAs), field-programmable gate arrays (FPGAs), etc.

[0067] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A method for controlling the unstacking of automobile beam stampings based on two-dimensional magnetic force regulation, characterized by, The method includes: Obtain the workpiece parameters of the workpiece to be destacking, including the workpiece length and workpiece thickness; Based on the workpiece length, the number of magnets to be activated is determined in a preset magnet quantity mapping rule, and based on the workpiece thickness, the target magnetic intensity level is determined in a preset magnetic intensity mapping relationship. Determine whether the workpiece meets the linkage condition; if the linkage condition is met. Then adjust the number of magnets activated to the linkage number value and adjust the target magnetic intensity level to the linkage intensity level; otherwise, keep the determined number of magnets activated and the target magnetic intensity level unchanged, and use the determined number of magnets activated and the target magnetic intensity level as the final control parameters. According to the final control parameters, the corresponding number and position of magnets are activated, and the magnetization intensity of the activated magnets is adjusted to the output value corresponding to the target magnetic intensity level, thereby completing the adsorption of the workpiece.

2. The two-dimensional magnetic force based automobile beam stamping de-stacking method according to claim 1, wherein, The preset magnetic intensity mapping relationship divides the workpiece thickness into at least two intervals, with different intervals corresponding to different magnetic intensity levels; the smaller the interval in which the workpiece thickness is located, the lower the corresponding magnetic intensity level.

3. The method of claim 2, wherein the method is based on two-dimensional magnetic force regulation for automobile beam stamping and unstacking. The at least two intervals comprise three thickness intervals and corresponding magnetic strength levels, specifically: When the workpiece thickness is in the range of 3.5 mm to 5.5 mm, the corresponding weak setting corresponds to a magnetic strength of 25% to 40% of the rated value. When the workpiece thickness is in the range of 5.5 mm to 6.5 mm, corresponding to the medium range, the magnetic strength is 50% to 70% of the rated value; When the workpiece thickness is in the range of 6.5 mm to 8.5 mm, the corresponding strong setting has a magnetic strength of 85% to 100% of the rated value.

4. The method for stamping and destacking automobile beams based on dual-dimensional magnetic control according to claim 1, characterized in that, The linkage condition is: the length of the workpiece is greater than a preset length threshold, and the thickness of the workpiece is less than a preset thickness threshold. The preset length threshold is 5m to 7m, and the preset thickness threshold is 4mm to 6mm; When the linkage conditions are met, the linkage quantity is 50% to 75% of the total number of magnets, and the linkage intensity level is 20% to 40% of the rated magnetic force. When the linkage condition is met, the linkage quantity value is less than the number of magnets activated obtained by mapping the workpiece length alone, and the linkage intensity level is lower than the target magnetic force intensity level obtained by mapping the workpiece thickness alone.

5. The method for stamping and destacking automobile beams based on dual-dimensional magnetic control according to claim 1, characterized in that, The method further includes: During the adsorption and handling of the workpiece, the operating current of each magnet is monitored in real time. When the operating current of any magnet deviates from the rated value by more than 10% to 20%, an adsorption abnormality is determined to exist. In response to the adsorption anomaly, perform at least one compensation operation, either by fine-tuning the magnetic strength of the corresponding magnet or by activating a backup magnet, until the operating current returns to the normal range.

6. The method for stamping and destacking automobile beams based on dual-dimensional magnetic control according to claim 1, characterized in that, The magnetization intensity of the activated magnet is adjusted by at least one of adjusting the magnetization voltage or pulse width modulation. When using the adjustable magnetization voltage method, the magnetization voltage accuracy is controlled within ±1% to ±5% of the rated value; When using pulse width modulation, the output of magnetization energy is controlled by adjusting the duty cycle. The duty cycle for the weak setting is 20% to 40%, for the medium setting it is 50% to 70%, and for the strong setting it is 85% to 100%.

7. The method for stamping and destacking automobile beams based on dual-dimensional magnetic control according to claim 1, characterized in that, The process of obtaining the workpiece parameters to be destacking is achieved through any of the following methods: The host computer can automatically retrieve the corresponding parameters by selecting the workpiece model from the preset formula parameter library.

8. A stamping and destacking system for automotive beams based on dual-dimensional magnetic force control, characterized in that, The system includes: The acquisition module is used to acquire the workpiece parameters of the workpiece to be destacking, the workpiece parameters including the workpiece length and the workpiece thickness; The determination module is used to determine the number of magnets to be activated based on the length of the workpiece in a preset magnet number mapping rule, and to determine the target magnetic strength level based on the thickness of the workpiece in a preset magnetic strength mapping relationship. The judgment module is used to determine whether the workpiece meets the linkage condition; if the linkage condition is met. As a module, it is used to adjust the number of magnets activated to the linkage number value and adjust the target magnetic strength level to the linkage strength level; otherwise, it keeps the determined number of magnets activated and the target magnetic strength level unchanged, and uses the determined number of magnets activated and the target magnetic strength level as the final control parameters. The output module is used to activate the corresponding number and position of magnets according to the final control parameters, and adjust the magnetization intensity of the activated magnets to the output value corresponding to the target magnetic intensity level, so as to complete the adsorption of the workpiece.

9. A computer comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the automobile beam stamping and destacking method based on dual-dimensional magnetic control as described in any one of claims 1 to 7.

10. A storage medium, characterized in that, The storage medium stores a computer program, which, when executed by a processor, implements the automobile beam stamping and destacking method based on dual-dimensional magnetic control as described in any one of claims 1 to 7.

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