37 results about "Sheet metal stamping" patented technology

This invention provides a positioning device for preventing lateral movement of a workpiece during mold opening. The device includes a lower mold assembly and a positioning assembly. The lower mold assembly includes a punch, a blank holder, and a lower mold base. The punch is fixedly mounted on the lower mold base. The blank holder is vertically movable and positioned on the lower mold base, surrounding the outer periphery of the punch. The bottom of the blank holder is connected to the lower mold base via a nitrogen spring. The working surface of the blank holder is inclined. During mold opening, the blank holder is lifted by the nitrogen spring, making its working surface higher than the punch. The positioning assembly is vertically extendable and retractable on the working surface of the blank holder. It can retract into the blank holder before sheet metal stamping and extend out of the blank holder during mold opening after sheet metal stamping, abutting the edge of the sheet metal to achieve horizontal positioning of the workpiece. This invention has the advantages of preventing the workpiece from sliding along the inclined surface of the blank holder during mold opening and ensuring workpiece positioning accuracy.

This utility model relates to the field of sheet metal stamping technology, and in particular to a sheet metal stamping device with adjustable stamping angle, comprising: a frame on which a lower die is mounted; a stamping mechanism including a first motor, a lead screw, a sliding table, and a stamping assembly cooperating with the lower die, the stamping assembly including a support block and a stamping block rotatably disposed therewith; and an adjustment mechanism for adjusting the angle of the stamping head, including a first adjustment part and a second adjustment part, the first adjustment part being used to drive the support block to rotate. The advantages of this utility model are: through the synergistic action of the first and second adjustment parts, multi-angle precise adjustment of the stamping head can be achieved, meeting the processing requirements of different sheet metal parts, reducing the frequency of die replacement, and improving production efficiency; the use of a motor-driven worm gear and gear transmission mechanism realizes automatic adjustment of the stamping angle, avoiding errors and safety hazards caused by manual adjustment, and improving processing accuracy and ease of operation.

This utility model discloses a material protection device for sheet metal stamping production, belonging to the technical field of sheet metal stamping devices. It includes a base, a worktable fixedly connected to the surface of the base, a frame mounted above the worktable, and a stamping die installed between the worktable and the frame. An assembly groove is provided on the end face of the worktable, and a support seat is installed inside the assembly groove. A support frame is fixedly connected to the top of the support seat. A feeding gap is provided between cleaning pads A and B. When conveying strip material to the stamping die, the holding limiting plate is lifted longitudinally. At this time, the platform and the support frame are locked in place, preventing loosening or detachment. Then, the strip material is passed through the feeding gap between cleaning pads A and B. During the material pulling process, the strip material, supported and limited by the platform and the limiting plate, will not directly contact the worktable, thereby reducing wear and improving product quality.

The application discloses a kind of metal sheet stamping die intelligent regulation and control method and system, collect the key parameter eigenvalue of die state, stamping process, sheet material characteristics, after time stamp alignment, push to digital twin virtual model to realize virtual mapping visualization;Based on the historical health data of time series database, the exponential weighted moving average and standard deviation of parameter are calculated through sliding time window mechanism, to determine the regulation and control threshold that is adaptive with die running time and associated with production batch;Real-time monitoring parameter and threshold, integrated matching degree is calculated when multiple parameters enter alarm area and continuously deviate;Integrated matching degree is lower than threshold or single parameter continuous overrun, generate and execute intelligent regulation and control strategy, while feedback regulation and control effect to virtual model.The scheme realizes adaptive intelligent regulation and control of multiple parameter fusion, perceives process abnormality and die fault in advance, forms closed-loop regulation and control system, improves sheet forming precision and product qualification rate, prolongs die service life, and realizes production whole-process data traceability.

The present application relates to the technical field of sheet metal stamping forming and process optimization, and provides a method for optimizing stamping process parameters of a thin-walled battery shell based on LNN prediction, which comprises the following steps: establishing a new energy thin-walled battery shell geometric model, selecting three process parameters with the greatest impact on forming quality as optimization variables, and selecting an index for evaluating forming quality; generating a plurality of experimental combinations in finite element simulation calculation by adopting BBD design test scheme, extracting the maximum thinning rate and the maximum thickening rate corresponding to each test to form an initial sample data set; constructing and training an improved LNN prediction model; taking the trained LNN prediction model as a fitness evaluation function of MOPSO algorithm, predicting a Pareto optimal solution set, and selecting a unique optimal solution. The present application can capture the complex coupling relationship and nonlinear effect among multiple process parameters, and effectively realize the collaborative optimization of contradictory quality objectives.

The utility model discloses a kind of multi-process compound dies, it includes upper die component and lower die component;The lower die component includes lower die seat, lower foot is set on the lower die seat, lower die plate is set on the lower foot and lower die kernel is set on the lower die plate;The upper die component includes upper die seat, upper clamping plate is set on the upper die seat, punch fixed plate and punch are set on the upper clamping plate, tool block backing plate is set on punch fixed plate, and tool block is set on tool block backing plate;Lower die kernel outside is provided with edge ring, the edge ring is oppositely arranged with the tool block, and the punch and tool block are provided with the pressing plate oppositely arranged with the lower die kernel.This application provides multi-process compound die reduces the need multiple sequence die to complete the processing of sheet metal part, reduces tool development cost, reduces the number of stamping equipment use, reduces sheet metal stamping part turnover frequency, improves production efficiency.

This utility model discloses a lock accessory, including a sheet metal cover and a bottom latch cover plate formed from sheet metal. The bottom latch cover plate includes an end plate and a side plate connected to each other. The side plate is located on one side of the end plate. The surface of the end plate is provided with clearance holes and connecting holes and / or connectors. The connectors face the other side of the end plate. The sheet metal cover is used to cover the bottom latch cover plate, and the end plate of the bottom latch cover plate is located at the port of the sheet metal cover. The sheet metal cover includes an outer cover and an inner cover formed by sheet metal stamping. The inner cover is fitted inside the outer cover. The side plate of the bottom latch cover plate extends into the inner cover and is directly and / or indirectly fixedly engaged with the side wall of the inner cover. In this utility model lock accessory, the sheet metal cover is fixed to the door (or other lock mounting carrier) through the bottom latch cover plate. The end plate of the bottom latch cover plate abuts against the door, with a large contact area, preventing damage to the door. Moreover, during installation, the sheet metal cover can be separated from the bottom latch cover plate without obstructing the installation of the bottom latch cover plate, making installation more convenient.

The utility model discloses a metal plate stamping device with fixed structure of machine tool belongs to sheet metal processing technical field, and it includes machine tool body, one side fixed connection of machine tool body has first air cylinder, first air cylinder one side is installed with first piston push rod, and first piston push rod is mutually clamped with machine tool body. This metal plate stamping device with fixed structure of machine tool is fixed to the plate on machine tool body, and the operator starts first air cylinder, to make first piston push rod elongation, and first piston push rod promotes rack to move, and rack drives two gear rotation, and gear drives threaded rod rotation, and threaded rod promotes fixed plate and rubber plate to move down, until rubber plate and plate surface completely adhere, and it is convenient to the quick stable fixation of plate, prevents the deviation or sliding of plate when stamping processing to plate, leads to the inaccuracy of the stamping device to plate, improves the working stability and accuracy of the stamping device.

This invention relates to the field of sheet metal processing technology, specifically to a sheet metal flexible processing equipment for sheet metal stamping and flanging composite processing. It solves the problem that after flexible metal sheets undergo magnetic sorting, the usual method of feeding with suction cups results in a long back-and-forth motion, increasing the overall processing time. The equipment includes: a magnetic sorting module comprising multiple adjustable magnetic separators connected to a power source, which magnetically separate stacked flexible metal sheets, separating adjacent sheets; and a feeding auxiliary mechanism comprising two symmetrically positioned and adjustable moving plates, with a rotatable auxiliary spiral conveyor rod at the bottom of each plate. This invention improves the processing efficiency of flexible metal sheets by providing rapid and assisted feeding of the magnetically sorted sheets, achieving continuous and uninterrupted feeding.

The application discloses a household appliance metal plate stamping die convenient to replace, and belongs to the technical field of stamping dies. The household appliance metal plate stamping die convenient to replace comprises an upper die plate, a connecting sleeve is fixedly arranged at the bottom of the upper die plate, a stamping head is detachably arranged at the bottom of the upper die plate, and a locking assembly is detachably arranged between the upper die plate and the stamping head. The stamping head and the upper die plate are locked and connected through the locking assembly, the wedge-shaped block A in the locking assembly is driven by the screw B to drive the wedge-shaped block B to be pressed against the top of the locking cavity, the locking and limiting in the horizontal direction of the locking sleeve are realized, the connecting column and the connecting sleeve are connected under the action of the locking sleeve, the screw B is reversely rotated during disassembly, and therefore, the problem that the stamping head is vibrated during repeated stamping, the connection of the stamping head is affected by vibration and is possibly failed, and the safety hidden danger of the die during household appliance metal plate stamping processing is caused is effectively solved, and the stamping head is convenient to replace and the processing stability of the stamping head is ensured.

This invention relates to an automated sheet metal stamping and forming apparatus, comprising: a worktable; a lower die base disposed on the worktable surface, the upper end face of which is provided with a forming groove; a clamping mechanism disposed on the worktable surface, the clamping mechanism including a pair of clamping components disposed on both sides of the forming groove, the clamping components including a support base, an electric push rod disposed on the side of the support base near the worktable surface, a connecting plate disposed on the output end of the electric push rod, and a plurality of clamping columns spaced apart on the lower end face of the connecting plate, the plurality of clamping columns clamping the sheet metal part to be stamped; and a stamping mechanism disposed directly above the forming groove for stamping and forming the sheet metal part. This invention first limits the sheet metal part by means of the clamping mechanism, and then stamps the sheet metal part by means of the stamping mechanism. The clamping mechanism improves the stability of the sheet metal part, avoids lateral slippage during stamping, and improves the stamping quality of the sheet metal part.

This utility model discloses a sheet metal stamping die that facilitates demolding, specifically relating to the field of stamping die technology. It includes a worktable, a stamping mechanism for stamping sheet metal at the top of the worktable, a die frame for limiting the sheet metal at the top of the worktable, and a lifting mechanism at the bottom of the worktable for demolding the stamped sheet metal. The lifting mechanism includes a fixed plate at the bottom of the worktable, a second threaded rod movably connected to the top side of the fixed plate via a bearing, and second limiting plates fixed on both sides of the bottom of the die frame. This utility model uses the lifting mechanism to move the die frame downwards, leaving the stamped sheet metal on the top of the worktable for easy handling by workers. It also uses a feeding mechanism to push the stamped sheet metal out from the top of the worktable for easy collection.

The application discloses a kind of based on low temperature embrittlement cooperates prefabricated mark guide plate stamping equipment, including base and the shelf plate of being movably arranged on base, the holding module for being clamped and positioning outside the processing area of tensioning the plate to be processed of outside the plate to be processed is arranged between the base and shelf plate, and the groove prefabricated module for processing V-shaped guide groove to outside the plate to be processed preset fracture zone, the low-temperature cooling module for the plate after being processed by groove prefabricated module is arranged on the side of base, to reduce the temperature of plate and maintain low-temperature atmosphere by being used for rapid cooling, and the control cabinet for being respectively communicated connection control with holding module, groove prefabricated module and low-temperature cooling module.The application solves the problem that traditional stamping process handles high-strength alloy plate and the outer ring component of difficult deformation material, because prefabricated mark processing, low-temperature treatment and stamping forming link discrete layout lead to parameter matching, low-temperature embrittlement uncontrollable, difficult to realize the problem of accurate control of fracture surface quality.

The present application belongs to the technical field of computer aided engineering, and particularly relates to a method for high-precision simulation prediction of sheet metal forming wrinkling, comprising: extracting the lowest-order buckling characteristic wavelength λ of a target stamping sheet metal; taking less than λ / 4 as a first constraint condition, determining a threshold value d_critical of a plurality of grid element sizes d for sheet metal simulation; taking the percentage of forming stroke completed when wrinkling initiation occurs as a second constraint condition, determining a feasible domain SF_feasible of a time step proportionality coefficient SF capable of effectively exciting instability according to system kinetic energy variation; constructing a coupling experiment matrix with d / SF as a factor, and determining the optimal d / SF value by comparing the simulation accuracy and calculation efficiency of different parameter combinations in the feasible domain, and accordingly performing sheet metal forming wrinkling simulation prediction. The method is suitable for sheet metal stamping wrinkling simulation. The present application also provides a non-transient readable recording medium storing the program of the method and a system comprising the medium, and the program can be called by a processing circuit to execute the above method.

The application provides a kind of automatic quality detection system of workpiece, relating to the quality detection technical field of sheet metal stamping part.The system includes a shuttle machine.The shuttle machine includes a chassis assembly, the chassis assembly is provided with a rack assembly capable of reciprocating relative to the chassis assembly, a first drive component is provided between the chassis assembly and the rack assembly, a rotating assembly is rotatably provided on the rack assembly, a second drive component is provided between the rotating assembly and the rack assembly, and a clamping assembly for clamping and fixing the workpiece is provided on the rotating assembly.A closed room is provided on the chassis assembly, and an avoidance gap for avoiding the rack assembly is provided on the closed room.A first detection assembly is provided on one side of the chassis assembly in the closed room.The first detection assembly includes a main frame, a light source and a camera assembly.The system can perform comprehensive and fully automated quality analysis on the workpiece, with high accuracy and freedom from human error.

This utility model discloses a reversing wrench, including a handle, a wrench head, a reversing mechanism, and a workpiece anti-disengagement mechanism. The wrench head includes a mounting shaft and a wrench head. The mounting shaft passes through the wrench head mounting hole in the handle head and is axially limited by an axial limiting mechanism. The outer circumferential surface of the mounting shaft is formed with at least one roller limiting surface. Each roller limiting surface forms a roller receiving cavity between itself and the wall of the wrench head mounting hole. The distance between the roller limiting surface and the wall of the wrench head mounting hole decreases from greater than the roller diameter to less than the roller diameter from the middle to both sides along the circumference of the wrench head mounting hole, forming two corresponding opposite force-bearing working positions. The roller driver of the reversing mechanism includes a dial part and a push claw part formed by powder metallurgy. The push claw part extends into the roller receiving cavity and is located on the side of the roller. An elastic element that abuts against the roller is wrapped on the side of the push claw part. The elastic element is formed by sheet metal stamping, which improves the strength and production efficiency of the reversing mechanism.

The application discloses a kind of plate stamping forming springback local coupling control methods, comprising the following steps: according to workpiece structure design workpiece stamping process scheme, using finite element simulation analysis technique analysis and predict workpiece springback amount;According to finite element simulation springback result, draw die surface is compensated for springback;Analysis workpiece occurs large amplitude bending springback area, determine local heating area, in heating device electromagnetic induction heating gun movement path is set;While using local coining method controls bending area springback, coining area is heating area, and grid coining rib is set in the area;In stamping production shaping procedure, local hot forming method and local coining method are simultaneously used to couple control workpiece springback.The springback control method provided by the application solves the problem of large amplitude springback of the product, ensures the quality of the product, and does not need to purchase large heating furnace equipment, reduces the number of die repairing and adjusting, greatly reduces the production cost, and improves the workpiece production efficiency.

The utility model relates to a quick release formula magnetic attraction belt buckle, including first buckle assembly and second buckle assembly. First buckle assembly includes first buckle piece and first magnetic piece, and first buckle piece includes the fixed groove of installing first magnetic piece, second buckle assembly includes second buckle piece and second magnetic piece, and second buckle piece is connected with first buckle piece rotation, and second buckle piece includes the fixed structure of fixed second magnetic piece, and first magnetic piece cooperates with second magnetic piece, and first buckle piece and second buckle piece are integrally formed after the bending of sheet metal stamping, obtain. The quick release formula magnetic attraction belt buckle of the application is due to setting the cooperation of first magnetic piece and second magnetic piece, realizes the quick buckling and separation of wearable equipment, in addition, since first buckle piece, second buckle piece, fixed groove and fixed structure are all obtained through the stamping and bending process, are favorable to simplifying manufacturing process, reducing manufacturing cost, reducing the quantity of spare parts.

This invention relates to the field of stamping production equipment technology, and proposes an automated sheet metal stamping production equipment including a frame, and a feeding mechanism, a conveying device, a stamping mechanism, and a slitting mechanism mounted on the frame. The feeding mechanism includes a feeding frame body, a rotating shaft, a fixed plate, several support members, and an adjusting plate. The adjusting plate is sleeved on the rotating shaft, and the adjusting plate has arc-shaped guide grooves corresponding to the support members, which pass through the corresponding arc-shaped guide grooves. When the adjusting plate rotates, the support members move along the guide grooves under the guidance of the arc-shaped guide grooves to support sheet metal coils of different inner diameters. The rotation of the rotating shaft realizes the unloading of the sheet metal coils, and the conveying device is used to sequentially transport the unloaded sheet metal to the stamping mechanism and the slitting mechanism. Through the above technical solution, the problems of poor sheet metal coil adaptability and insufficient unloading stability in the prior art, which affect the subsequent processing quality, are solved.

This invention relates to the field of energy-saving air conditioner outdoor unit housing technology, specifically a high-strength metal sheet metal stamping part for energy-saving air conditioner outdoor unit housing. It includes a stamping part body, a sliding groove, at least two sliding plates, a fixing component, and an adjusting component. Through multi-dimensional design including sliding plate spacing adjustment, fixed base lateral spacing adjustment, and height and angle adjustment, it can adapt to different mounting surface spacing, hole diameter distribution, and flatness requirements. A bidirectional lead screw and threaded engagement ensure lateral fixing accuracy, while a ratchet and ratchet one-way locking mechanism prevents vibration-induced loosening. The fit between the support plate and the sliding block enhances support stability, preventing displacement or abnormal noise caused by loose fixing during outdoor unit operation. The stamping part body is made of high-strength metal, and the linkage structure design of the adjusting component and the fixing component is reasonable, resulting in strong load-bearing capacity.

The utility model provides a kind of stamping die, it includes: upper die assembly, including die and upper die holder, die is fixed on upper die holder, pre-pressing pin and stripper pin are embedded on die;Lower die assembly, including punch, pressure ring and lower die holder, punch is embedded in lower die holder, pressure ring is vertically movably set on lower die holder and is peripherally set in the outer periphery of punch, the bottom of pressure ring is connected with lower die holder by nitrogen spring, the working surface of pressure ring is inclined surface;When opening, pressure ring is lifted under the action of nitrogen spring, so that the working surface of pressure ring is higher than punch;Positioning assembly, vertically telescopicly set on the working surface of pressure ring, and can be retracted into pressure ring before sheet metal stamping forming, and, in the opening process after sheet metal stamping forming, extend pressure ring and rest against sheet metal edge, to make workpiece realize positioning in horizontal direction.The utility model has the advantages of preventing workpiece from slipping along pressure ring inclined surface in opening process, ensuring workpiece positioning accuracy.

The utility model provides a novel sheet metal part stamping forming processing device relates to sheet metal part processing technical field, include: fixed chassis, the four corners of fixed chassis are respectively set up and are connected the hole that penetrates, the middle part of fixed chassis is set up and is firm groove. Through the sheet metal part on the lower mould is temporarily fixed limit by the limit block of front and back two ends, the sheet metal part is not prone to displacement in the stamping process, ensures the stability of stamping process, makes the shape and size of each time stamping more consistent, thereby carries out the stamping precision machining to the sheet metal part, because the sheet metal part keeps fixed in the processing, can reduce the processing error caused by displacement, thereby reduces the rate of defective products, improves production efficiency, solves the sheet metal part and needs to use the upper and lower mould and carries out the stamping processing, therefore needs to carry out the temporary fixed limit to the sheet metal part, otherwise the sheet metal part will deviate when being touched by stamping and cannot be precisely machined.

This invention belongs to the field of sheet metal stamping technology, specifically a long and narrow high-flanged stamping die for new energy vehicle sheet metal parts. It includes: a base, with guide pillars evenly arranged on the top of the base; a lower die on the outer wall of the guide pillars; and a movable plate above the lower die. The long and narrow high-flanged stamping die for new energy vehicle sheet metal parts also includes: a cleaning mechanism, the top of which is slidably connected to the bottom of the movable plate; and a protective mechanism, the inner wall of which is slidably connected to the outer wall of the guide pillars. This invention, by setting up a cleaning mechanism, and with the cooperation of pneumatic and auxiliary components, cleans debris into the collection component, reducing the workload of manual cleaning, preventing hands from approaching the upper and lower dies and thus avoiding danger, thoroughly cleaning the surface and interior of the lower die, maintaining cleanliness between the upper and lower dies, and enabling better stamping of sheet metal parts.

This utility model discloses an automatic loading and unloading device for sheet metal stamping, comprising an automatic loading component, a workpiece transfer component, and an automatic unloading component. The workpiece transfer component includes an X-axis drive linear module and an X-axis movable frame, with several workpiece gripping mechanisms mounted on the X-axis movable frame. The automatic unloading component includes an unloading bracket and an unloading conveyor belt mounted on the upper end of the unloading bracket, with an unloading robot mounted on the upper side of the unloading conveyor belt at the upper end of the unloading bracket. The automatic loading component includes a loading bracket, which is equipped with a sheet metal feeder, a sheet metal positioning mechanism, and a loading robot located between the sheet metal feeder and the sheet metal positioning mechanism. The loading robot includes a loading drive linear module, a loading lifting drive cylinder, a loading lifting movable frame, and a loading gripping suction cup. Through the above structural design, this utility model has the advantages of novel design and high degree of automation, and can be effectively applied to multi-process stamping of sheet metal parts.

This invention belongs to the field of stamping die technology, specifically a sheet metal stamping die for new energy vehicle parts. It includes a base, hydraulic columns installed at the four corners above the base, a top plate positioned above the hydraulic columns, and a cleaning mechanism installed on one side of the top plate. This invention, through the cleaning mechanism, deeply cleans the surfaces of the upper and lower dies, reducing damage to the sheet metal workpiece surface from debris, lowering the coefficient of friction, reducing resistance, and preventing scratches and adhesion on the die surface, thereby extending the maintenance cycle and service life of the die. Since the surface of the lower die is blocked by the hydraulic columns, the dust collection component cannot directly and completely cover and clean the lower die in one go. At this point, by moving the first support rod left and right along the connecting rod, the lateral coverage area of ​​the dust collection component is increased, completing a comprehensive cleaning of both the upper and lower dies and avoiding the danger of direct human contact with the lower die during cleaning.

The utility model provides a kind of high-density connector of low insertion force, including an insulating body, with the insertion of an electronic module One length slot, the length side wall of both sides of slot is respectively provided with multiple terminal slots in;Multiple terminals are respectively one-to-one corresponding and are received in the corresponding terminal slot in two length side walls, and at least a part of terminal slot is provided with double-layer terminal, and the rest terminal slot is single-layer terminal;Each terminal includes guide part, contact part, fixed part and welding part;Guide part is used to guide electronic module to be inserted into slot so that the terminal of both sides of slot is opened by electronic module, contact part is inserted into slot and contacts with electronic module, fixed part is fixed in the terminal slot of insulating body, each terminal is formed by sheet metal stamping, the contact point surface of the contact part of each terminal and electronic module is sheet metal stamping cutting surface, and the guide surface of each guide part is arc-shaped;The high-density connector of low insertion force can make electronic module plugging operation more easily.

This utility model discloses a metal sheet stamping die, belonging to the field of die technology. It includes a lower die base, a die cavity fixed to the top of the lower die base, an upper die base located directly above the die cavity, a punch installed at the bottom of the upper die base, and a positioning plate for pressing and positioning the material. Trapezoidal blocks are fixed to both ends of the bottom of the upper die base, with the inclined surfaces of the bottom of the trapezoidal blocks facing the material conveying direction. A groove is formed along the length of the inclined surface of the trapezoidal block, and a slider is slidably disposed inside the groove. This utility model improves upon the protruding limiting design at the top of the die cavity in the prior art, avoiding obstruction of the metal sheet conveying by the protrusion. By utilizing the trapezoidal blocks, sliders, pressure plate rubber rollers, and a unidirectional rotation mechanism, automatic unidirectional stable conveying of the metal sheet can be achieved during the descent of the upper die base, ensuring precise and controllable single-movement distance, improving the dimensional accuracy and consistency of the stamped parts, and significantly increasing the stamping processing speed.

This utility model discloses a movable structure railing stair accessory, comprising a first connecting component and a second connecting component, which are movably hinged together. The first connecting component includes a sheet metal stretching arc cover, a first sheet metal stamping cover, and a first connecting pipe, which are sequentially welded and fixed together. The second connecting component includes a movable connecting arc plate, a second sheet metal stamping cover, and a second connecting pipe, which are also sequentially welded and fixed together. The movable structure railing stair accessory of this utility model adopts separate welding and one-piece stamping for each connecting component, simplifying the assembly steps, significantly improving installation efficiency, reducing labor costs, and lowering manufacturing costs.

The present application relates to the technical field of automobile sheet metal stamping, in particular to a lifting mechanism for preventing deformation of automobile parts during stamping and a stamping die, which comprises a rectangular frame, an upper die holder, a lower die holder, a lifting and unloading mechanism and a pressing assembly. A plurality of positioning columns are arranged on the upper die holder, and a plurality of positioning holes are arranged on the lower die holder and matched with the positioning columns. The lifting and unloading mechanism comprises a main shaft and two lifting and overturning structures. The middle part of the main shaft is connected with the lower die holder, and the two ends of the main shaft are connected with the rectangular frame through bearing seats. The two lifting and overturning structures are arranged at the two ends of the main shaft respectively, and are used for converting the lifting movement of the upper die holder into the rotating movement of the main shaft. The pressing assembly comprises a plurality of magnetic cover plates, which are the same as the upper die. When the upper die holder and the lower die holder are separated, the magnetic cover plates are adsorbed on the lower die holder. The lifting and unloading mechanism and the pressing assembly are arranged, so that the deformation problem of the stamping part caused by uneven stress when the stamping part is separated from the lower die is solved.

This invention discloses a stress-relief stamping device for sheet metal, relating to the field of sheet metal stamping technology. It includes a frame, a stamping unit, a pre-leveling unit, an unloading unit, and a shaping unit. The frame provides a mounting base. The stamping unit is used for stamping and forming the sheet metal. The pre-leveling unit is used for pre-leveling and stress relief before stamping. The unloading unit is used for unloading peak impact during stamping. The shaping unit is used for rolling and shaping the cut edges of the formed part. After the sheet metal is placed, during the stamping process, the pre-leveling unit eliminates the initial internal stress and warping of the raw material, preventing stress accumulation during stamping. The unloading unit disperses the stress waves generated during stamping, preventing stress concentration in the forming area. The shaping unit reduces edge stress, improving the sheet metal forming quality.