Metal machining stamping die

Abstract

The invention discloses a metal machining stamping die, and relates to the technical field of stamping dies. The device comprises a machining table, a rack is fixed to the top of the machining table, a hydraulic cylinder is fixed to the top of the rack, an upper mold is fixed to the bottom of the output end of the hydraulic cylinder, supporting columns used for guiding the upper mold are fixed to the four corners of the top of the machining table, and a lower mold is fixed to the top of the machining table; positioning devices are symmetrically arranged on the two sides of the top of the machining table, and each positioning device comprises a pair of clamping pieces capable of moving oppositely or oppositely. Through the arrangement of the positioning device, the hydraulic cylinder, the upper die, the supporting column, the triggering part, the L-shaped plate, the fixing column, the hinge rod, the clamping piece and the L-shaped frame are matched to push a metal sheet to be centered at the lower die, the centered positioning of the metal sheet ensures the shape symmetry and the size accuracy in the metal part stamping process, and therefore the product quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stamping dies, in particular to a metal processing stamping die. BACKGROUND

[0002] A stamping die is a tool used in metal processing to shape metal sheets into desired shapes through stamping processes. It is usually composed of an upper die and a lower die, which uses mechanical pressure to cut, bend, stretch or punch holes in metal sheets. Stamping dies are widely used in the automotive, electronics, and home appliance industries, and can efficiently and accurately produce various complex-shaped metal parts with high production efficiency and low cost.

[0003] A stamping die for metal part processing is disclosed in Chinese Patent No. CN218109067U, which includes a workbench, a forming die, a locking plate, a lifting support plate, and a stamping die head. The upper surface of the workbench is recessed downward to form a die assembly cavity, and the forming die is fixedly assembled in the die assembly cavity. The upper surface of the forming die is provided with a locking plate on both sides of the forming cavity, which is horizontally detachable. The side of the locking plate facing the forming cavity is recessed inward to form a raw material assembly groove. The lifting support plate is vertically arranged above the forming die, and the lower surface of the lifting support plate is provided with a stamping die head matched with the forming die. This stamping die overcomes the problem of complicated positioning and assembly operation of the raw material during the stamping process in the prior art, and also prevents position deviation during the stamping process, which seriously affects the stamping precision and cannot guarantee the quality of the stamped products.

[0004] However, the current stamping die has the following problems: when the metal sheet is stamped into several-shaped hardware, it is not convenient to center the position of the metal sheet, which leads to asymmetric shape or size that does not meet the requirements during the stamping process of the metal sheet, especially when manufacturing precision several-shaped hardware, the position deviation will affect the size accuracy and appearance quality of the finished product. Therefore, we propose a metal processing stamping die. SUMMARY

[0005] To overcome the shortcomings of the prior art, the present application provides a metal processing stamping die to solve the problems raised in the background art.

[0006] To achieve the above purpose, the present application is realized by the following technical scheme: a metal processing stamping die, comprising a processing table, a machine frame fixed on the top of the processing table, a hydraulic cylinder fixed on the top of the machine frame, an upper die fixed on the output end of the hydraulic cylinder, a support column for guiding the upper die fixed at the top of the processing table, and a lower die fixed on the top of the processing table. The top of the processing table is symmetrically provided with positioning devices on both sides, the positioning devices comprising a pair of clamping members capable of moving towards or away from each other, and a transmission mechanism converting the vertical downward movement of the upper die into the horizontal movement of the clamping members towards each other; the transmission mechanism is provided with a trigger part located in the movement path of the upper die; When the upper die moves downward and presses the trigger part, the transmission mechanism is driven, and the clamping members on both sides move towards each other to centrally position the metal sheet; then the upper die continues to move downward for stamping, and the transmission mechanism and the clamping members are reset to a position avoiding the stamping trajectory of the upper die under the action of the elastic element.

[0007] Preferably, the transmission mechanism comprises a pair of L-shaped plates, a hinged rod, and a fixed column fixed to the top of the processing table and used to limit the vertical sliding of the L-shaped plates; the elastic element is arranged between the bottom of the L-shaped plate and the processing table; the two ends of the hinged rod are respectively hinged to the bottom of the L-shaped plate and the outer side of the clamping member; and the trigger part is a spring plate fixed to the inner side of the L-shaped plate.

[0008] Preferably, the clamping member is a T-shaped sliding plate, and an L-shaped frame is arranged on the top of the processing table, and the clamping member is slidingly arranged on the L-shaped frame.

[0009] Preferably, the lower die is symmetrically provided with a multi-stage device on both sides, the multi-stage device comprising a plurality of limiting units arranged in sequence along the stamping direction; each limiting unit can be triggered in sequence and locked in the exit position when the upper die returns, so as to no longer limit the downward movement depth of the upper die in the next stamping stroke.

[0010] Preferably, the limiting unit comprises slidingly arranged cushion block one, cushion block two, and cushion block three, and trapezoidal plate three, trapezoidal plate two, and trapezoidal plate one fixed to the top thereof through a connecting rod; the bottom surface of the trapezoidal plate is an inclined surface and is located in the movement path of the upper die; a brake member connected to the locking mechanism is arranged at each of the cushion block one, the cushion block two, and the cushion block three.

[0011] Preferably, the processing table is provided with a pushing device for automatically pushing the workpiece out of the lower die after stamping, the pushing device comprising a push rod driven by a driving member to reciprocate, and an elastic pushing part arranged at the front end of the push rod; the elastic pushing part is configured to pass over the workpiece when it moves towards the die with the push rod, and to push the workpiece away from the lower die when it moves in the opposite direction.

[0012] Preferably, the pushing device is further provided with a flatness detection member, the flatness detection member comprising a detection roller capable of rolling above the push rod, and a sensor for sensing the vertical displacement of the detection roller.

[0013] Preferably, the brake member comprises three Z-shaped column rods and trapezoidal notch plates, each Z-shaped column rod is fixed at the bottom of one side of the cushion block one, the cushion block two and the cushion block three close to the elastic expansion plate, and the three trapezoidal notch plates are fixed on the expansion end side of the elastic expansion plate in staggered steps, and the top of the trapezoidal notch plate is provided with a notch for accommodating the cylinder of the Z-shaped column rod.

[0014] Preferably, the sensor comprises two side frames fixed on the upper part of the push rod on both sides and used for supporting the cavity cylinder, the top of the cavity cylinder is embedded with a pressure gauge, and a plug rod is slidingly installed in the cavity cylinder, and a rotatable detection roller is arranged on a section of the plug rod.

[0015] The application provides a metal processing stamping die. (1) The positioning device is arranged, so that the hydraulic cylinder, the upper die, the support, the trigger part, the L-shaped plate, the fixed column, the hinged rod, the clamping part and the L-shaped frame cooperate to push the metal sheet to the center of the lower die, the centering of the metal sheet ensures the symmetry of the shape and the accuracy of the size during the stamping process of the metal part, thereby improving the product quality; when the upper die passes the trigger part, the L-shaped plate is reset under the action of the corresponding spring elastic force, the L-shaped plate drives the clamping part to move away from the lower die along the top of the L-shaped frame through the hinged rod, so that the clamping part is not located below the upper die after the metal sheet is centered, thereby avoiding the problem that the existence of the clamping part affects the stamping of the metal sheet into a shape by the upper die and the lower die.

[0016] (2) The multi-stage device is arranged, so that the hydraulic cylinder, the upper die, the elastic expansion plate, the trapezoidal notch plate, the Z-shaped column rod, the cushion block one, the cushion block two, the cushion block three, the connecting rod, the trapezoidal plate one, the trapezoidal plate two and the trapezoidal plate three cooperate to stamp the thicker metal sheet in multiple times, which can effectively disperse the pressure applied on the metal sheet, avoid excessive single pressure on the metal sheet, and reduce the risk of excessive deformation, cracks and damage.

[0017] (3) The push device is arranged, so that the driving part, the threaded block and the push rod cooperate to drive the expansion end vertical surface of the elastic push-out part to push the stamped metal sheet out of the lower die, so that the stamped metal sheet can be automatically moved out of the lower die without manual intervention, thereby reducing manual handling and adjustment time; when the next metal sheet is placed on the lower die by the worker, the driving part, the threaded block, the push rod, the side frame, the plug rod, the U-shaped frame and the detection roller cooperate to measure the flatness of the metal sheet, and the flatness of the metal sheet can be measured to ensure the uniformity of the deformation of the metal sheet during the stamping process, avoid the occurrence of wave-shaped or concave adverse phenomena on the surface, and improve the appearance and size accuracy of the final product. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic view of the whole application; Figure 2 is a schematic view of the partial section of the application; Figure 3 is a schematic view of the positioning device of the application; Figure 4 is a schematic view of the multi-stage device of the application Figure 1 ; Figure 5 is a schematic view of the multi-stage device of the application Figure 2 ; Figure 6 is a schematic view of the multi-stage device of the application Figure 3 ; Figure 7 is a schematic view of the pushing device of the application; Figure 8 is an enlarged schematic view of the structure at A of the application Figure 7 .

[0019] In the figure: 1, processing table; 2, frame; 3, hydraulic cylinder; 4, upper mold; 5, support column; 6, lower mold; 7, positioning device; 71, L-shaped frame; 72, clamping piece; 73, hinged rod; 74, L-shaped plate; 75, fixed column; 76, trigger part; 8, multi-stage device; 81, elastic expansion plate; 82, trapezoidal gap plate; 83, Z-shaped column rod; 84, cushion block one; 85, cushion block two; 86, cushion block three; 87, connecting rod; 88, trapezoidal plate one; 89, trapezoidal plate two; 810, trapezoidal plate three; 9, pushing device; 91, driving piece; 92, threaded block; 93, push rod; 94, elastic pushing part; 95, side frame; 96, cavity cylinder; 97, pressure gauge; 98, plug rod; 99, U-shaped frame; 910, detection roller. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application.

[0021] Please refer to Figures 1-8One embodiment of the present application is: a metal processing stamping die, comprising a processing table 1, the top of the processing table 1 is fixed with a rack 2, the top of the rack 2 is fixed with a hydraulic cylinder 3, the output end bottom of the hydraulic cylinder 3 is fixed with an upper die 4, the top of the processing table 1 is fixed with a lower die 6, and the top of the processing table 1 is fixed with a support 5 for guiding the upper die 4 at the four corners; the top of the processing table 1 is provided with a positioning device 7 on both sides symmetrically, the positioning device 7 comprises a pair of clamping pieces 72 that can move towards or away from each other, and a transmission mechanism that converts the vertical downward movement of the upper die 4 into the horizontal movement of the clamping pieces 72 towards each other; the transmission mechanism is provided with a trigger part 76 located in the movement path of the upper die 4; when the upper die 4 moves down and presses the trigger part 76 to drive the transmission mechanism, the clamping pieces 72 on both sides move towards each other to center the metal sheet; then the upper die 4 continues to move down and stamp after passing the trigger part 76, the transmission mechanism and the clamping pieces 72 are reset to a position away from the stamping trajectory of the upper die 4 under the action of elastic elements, the transmission mechanism comprises a pair of L-shaped plates 74, a hinged rod 73 and a fixed column 75 fixed on the top of the processing table 1 and used for limiting the vertical sliding of the L-shaped plates 74; the bottom of the L-shaped plate 74 and the processing table 1 are provided with elastic elements; the both ends of the hinged rod 73 are respectively hinged with the bottom of the L-shaped plate 74 and the outer side of the clamping piece 72; the trigger part 76 is a spring plate fixed to the inner side of the L-shaped plate 74, and the clamping piece 72 is a T-shaped sliding plate, an L-shaped frame 71 is arranged on the top of the processing table 1, and the clamping piece 72 is slidingly arranged on the L-shaped frame 71; through the arrangement of the above structure, the clamping pieces 72 on both sides push the metal sheet to the center of the lower die 6, the centering of the metal sheet ensures the symmetry of the shape and the accuracy of the size during the stamping of the metal part, thereby improving the product quality; after the upper die 4 passes the trigger part 76, the clamping piece 72 resets and is not in the position below the upper die 4, thereby avoiding the influence of the existence of the clamping piece 72 on the stamping of the metal sheet into several shapes by the upper die 4 and the lower die 6.

[0022] The lower die 6 is symmetrically provided with a plurality of multi-stage devices 8 on both sides, and the multi-stage device 8 comprises a plurality of limiting units arranged in sequence along the punching direction; each limiting unit can be triggered in sequence and locked in the exit position when the upper die 4 returns, so as to no longer limit the downward depth of the upper die 4 in the next punching stroke; the limiting unit comprises a slidingly arranged cushion block one 84, a cushion block two 85 and a cushion block three 86, and a trapezoidal plate three 810, a trapezoidal plate two 89 and a trapezoidal plate one 88 fixed on the top thereof through a connecting rod 87; the bottom surface of the trapezoidal plate is an inclined surface and is located on the movement path of the upper die 4; the cushion block one, the cushion block two and the cushion block three are all connected with a brake part which can be locked by a locking mechanism; the brake part comprises three Z-shaped column rods and trapezoidal notch plates; each Z-shaped column rod is fixed on one side of the bottom of the cushion block one, the cushion block two and the cushion block three close to the elastic expansion plate; the three trapezoidal notch plates are fixed on the expansion end side of the elastic expansion plate in a staggered stepped manner; the top of the trapezoidal notch plate is provided with a notch close to one side of the elastic expansion plate for accommodating the cylinder of the Z-shaped column rod; through the arrangement of the above structure, the thicker metal sheet is punched in multiple times, which can effectively disperse the pressure applied on the metal sheet and avoid excessive single pressure on the metal sheet, thereby reducing the risk of excessive deformation, cracks and damage.

[0023] In use, the metal sheet is placed on the top of the lower die, and then the hydraulic cylinder is started, the expansion end of the hydraulic cylinder drives the upper die to move downward along the outside of the support column, the upper die is pressed against the lower die, so that the upper die and the lower die punch the metal sheet into several shapes; in the process of downward movement of the upper die, the upper die pushes the trigger part to drive the L-shaped plate to move downward along the outside of the fixed column, the corresponding spring of the L-shaped plate is compressed, and the L-shaped plate pushes the hinged rod to drive the clamping part to move toward the lower die along the top of the L-shaped frame, the clamping parts on both sides push the metal sheet to be centered at the lower die, the centering positioning of the metal sheet ensures the symmetry of the shape and the accuracy of the size of the metal part in the punching process, thereby improving the product quality; after the clamping part abuts against the outer wall of the metal sheet, the position of the clamping part is stationary, the clamping part limits the position of the L-shaped plate through the hinged rod, the L-shaped plate with the trigger part is stationary, at this time, when the upper die continues to move downward, the upper die will bend downward against the trigger part, so that the upper die passes the trigger part, when the upper die passes the trigger part, the upper die no longer applies a downward thrust to the trigger part, the L-shaped plate resets under the action of the corresponding spring elastic force, the L-shaped plate drives the clamping part to move away from the lower die along the top of the L-shaped frame through the hinged rod, so that the clamping part is not located below the upper die after the clamping part centers the metal sheet, thereby avoiding the problem that the existence of the clamping part affects the punching of the metal sheet into several shapes by the upper die and the lower die.

[0024] In the stamping of thicker metal sheet, when the hydraulic cylinder drives the upper die to move downward for the first time, the upper die will move to the position of the cushion block three, at this time the upper die and the lower die will carry out the first-stage stamping of the metal sheet, then the hydraulic cylinder drives the upper die to move upward, and the upper die moves to the position of the trapezoidal plate one, the inclined surface of the trapezoidal plate one drives the connecting rod and the Z-shaped column rod to pull the cushion block three to move along the top of the L-shaped frame to the direction of the elastic expansion plate, the corresponding spring of the cushion block three will be compressed, in this process the cylinder of the Z-shaped column rod pushes the inclined surface of the trapezoidal notch plate to drive the expansion end of the elastic expansion plate to move downward, until the cylinder of the Z-shaped column rod moves to the notch position of the trapezoidal notch plate, at this time the cylinder of the Z-shaped column rod no longer exerts the pushing force on the inclined surface of the trapezoidal notch plate, the expansion end of the elastic expansion plate resets, and the notch of the trapezoidal notch plate limits the position of the cushion block three, so that the cushion block three is not in the position below the upper die, at this time when the hydraulic cylinder drives the upper die to move downward for the second time, the upper die will move to the position of the cushion block two, at this time the upper die and the lower die will carry out the second-stage stamping of the metal sheet, then the hydraulic cylinder drives the upper die to move upward again, and the upper die moves to the position of the trapezoidal plate one and the trapezoidal plate two, at this time the notch of the trapezoidal notch plate limits the positions of the cushion block three and the cushion block two through the Z-shaped column rod, so that the cushion block three and the cushion block two are not in the position below the upper die, at this time when the hydraulic cylinder drives the upper die to move downward for the third time, the upper die will move to the position of the cushion block one, at this time the upper die and the lower die will carry out the third-stage stamping of the metal sheet, then the hydraulic cylinder drives the upper die to move upward again, and the upper die moves to the position of the trapezoidal plate one, the trapezoidal plate two and the trapezoidal plate three, at this time the notch of the trapezoidal notch plate limits the positions of the cushion block three, the cushion block two and the cushion block one through the Z-shaped column rod, so that the cushion block three, the cushion block two and the cushion block one are not in the position below the upper die, finally when the hydraulic cylinder drives the upper die to move downward again, the final stamping of the metal sheet can be completed, and through the stamping of the thicker metal sheet in multiple times, the pressure applied on the metal sheet can be effectively dispersed, the excessive single pressure on the metal sheet is avoided, and the risk of excessive deformation, cracks and damage is reduced.

[0025] Please refer to Fig- Fig, on the basis of the above embodiment, another embodiment of the present application, the processing platform is provided with a push device for automatically pushing the workpiece out of the lower die after stamping forming, the push device includes a push rod driven by a driving member to reciprocate, and an elastic push-out part provided at the front end of the push rod; the elastic push-out part is configured to pass over the workpiece when it moves towards the die with the push rod, and to push the workpiece out of the lower die when it moves in the opposite direction, the push device is also provided with a flatness detection member, the flatness detection member includes a detection roller that can roll above the push rod, and a sensor for sensing the vertical displacement of the detection roller, the sensor includes two side frames respectively fixed on the upper part of the push rod on both sides and used for supporting the cavity cylinder, the top of the cavity cylinder is embedded with a pressure gauge, a plug rod is slidingly installed inside the cavity cylinder, a rotatable detection roller is provided on a section of the plug rod, through the arrangement of the above structure, the telescopic end of the elastic push-out part driven by the push rod pushes the stamped metal sheet out of the lower die vertically, so that the stamped metal sheet can be automatically removed from the lower die without manual intervention, reducing the manual handling and adjustment time.

[0026] The push device 9 further includes two side frames 95 respectively fixed on the upper part of the push rod 93 on both sides, two cavity cylinders 96 respectively fixed on the top of the two side frames 95, a pressure gauge 97 embedded on the top of the cavity cylinder 96, a plug rod 98 slidingly installed inside the cavity cylinder 96, a U-shaped frame 99 fixed on the bottom of the plug rod 98, a detection roller 910 rotatably installed inside the U-shaped frame 99, the bottom of the plug rod 98 penetrates the bottom of the inner wall of the cavity cylinder 96, a spring is provided between the top of the plug rod 98 and the top of the inner wall of the cavity cylinder 96, the bottom of the detection roller 910 is at the same horizontal plane as the top of the lower die 6, through the arrangement of the above structure, the surface flatness of the metal sheet is measured, by measuring the flatness of the metal sheet, the uniformity of the deformation of the metal sheet during stamping can be ensured, avoiding the occurrence of wave-shaped or concave and other adverse phenomena on the surface, thereby improving the appearance and dimensional accuracy of the final product.

[0027] In use, after each time the metal sheet stamping is completed, the driving member 91 is intermittently and reversely driven by the motor. When the driving member 91 is positively rotated, the driving member 91 drives the threaded block 92 to move the push rod 93 in the direction of the lower die 6, the push rod 93 drives the elastic push-out part 94 to move, when the elastic push-out part 94 is in contact with the metal sheet after stamping, the side end face of the metal sheet pushes the elastic push-out part 94 to drive the elastic push-out part 94 to stretch upward, until the push rod 93 drives the elastic push-out part 94 to move beyond the metal sheet after stamping, at this time, the elastic push-out part 94 is no longer in contact with the metal sheet after stamping, the elastic push-out part 94 resets and moves downward, at this time, the driving member 91 is reversely rotated, the driving member 91 drives the threaded block 92 to drive the push rod 93 to move away from the lower die 6, the push rod 93 drives the elastic push-out part 94 to move the metal sheet after stamping out of the lower die 6, so that the metal sheet after stamping can be automatically moved out of the lower die 6 without manual intervention, reducing manual handling and adjustment time; when the metal sheet after stamping is moved out of the lower die 6, the next metal sheet is placed on the lower die 6 by the worker, the push rod 93 drives the elastic push-out part 94 to move by the side frame 95 during the movement of the push rod 93 in the direction of the lower die 6, the detection roller 910 moves to the top of the metal sheet, when the surface of the metal sheet is uneven, the detection roller 910 pushes the plug rod 98 through the U-shaped frame 99, the plug rod 98 extrudes the air in the cavity cylinder 96, and the pressure gauge 97 measures the air pressure in the cavity cylinder 96, so as to measure the flatness of the metal sheet. By measuring the flatness of the metal sheet, the uniformity of the deformation of the metal sheet during stamping can be ensured, and adverse phenomena such as wave-shaped or concave surface can be avoided, so as to improve the appearance and size precision of the final product.

[0028] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A metal working stamping die comprising a working table (1), characterized in that: The top of the processing table (1) is fixed with a rack (2), the top of the rack (2) is fixed with a hydraulic cylinder (3), the output end of the hydraulic cylinder (3) is fixed with an upper die (4), the top of the processing table (1) is fixed with a lower die (6). The top of the processing table (1) is fixed with a positioning device (7) which is symmetrically arranged on both sides of the processing table (1), the positioning device (7) comprises a pair of clamping pieces (72) which can move towards or away from each other, and a transmission mechanism which converts the vertical downward movement of the upper die (4) into the horizontal movement of the clamping pieces (72) towards each other; the transmission mechanism is provided with a trigger portion (76) which is located in the movement path of the upper die (4); Wherein, when the upper die (4) is pressed to drive the transmission mechanism to move the clamping pieces (72) on both sides towards each other to center the metal sheet when the upper die (4) moves downward; then the upper die (4) continues to move downward to punch after passing the trigger portion (76), the transmission mechanism and the clamping pieces (72) are reset to a position away from the punching trajectory of the upper die (4) under the action of the elastic element.

2. A metal working stamping die according to claim 1 wherein: The transmission mechanism comprises a pair of L-shaped plates (74), a hinged rod (73) and a fixed column (75) fixed on the top of the processing table (1) and used for limiting the vertical sliding of the L-shaped plates (74); the elastic element is arranged between the bottom of the L-shaped plate (74) and the processing table (1); the both ends of the hinged rod (73) are respectively hinged to the bottom of the L-shaped plate (74) and the outer side of the clamping piece (72); the trigger portion (76) is a spring plate fixed to the inner side of the L-shaped plate (74).

3. A metal working stamping die according to claim 2 wherein: The clamping piece (72) is a T-shaped sliding plate, and an L-shaped frame (71) is arranged on the top of the processing table (1), and the clamping piece (72) is slidingly arranged on the L-shaped frame (71).

4. A metal working stamping die according to claim 1 wherein: The lower die (6) is symmetrically provided with a multi-stage device (8) on both sides, the multi-stage device (8) comprises a plurality of limiting units arranged in sequence along the punching direction; each limiting unit can be triggered in sequence and locked in the exit position when the upper die (4) returns, so as to no longer limit the downward depth of the upper die (4) in the next punching stroke.

5. A metal working stamping die according to claim 4 wherein: The limiting unit comprises a slidingly arranged pad one (84), a pad two (85) and a pad three (86), and a trapezoidal plate three (810), a trapezoidal plate two (89) and a trapezoidal plate one (88) fixed on the top thereof through a connecting rod (87); the bottom surface of the trapezoidal plate is an inclined surface and is located in the movement path of the upper die (4); the pad one (84), the pad two (85) and the pad three (86) are each connected with a brake piece which can be locked by a locking mechanism.

6. A metal working stamping die according to claim 1 wherein: The processing platform (1) is provided with a pushing device (9) for pushing the workpiece out of the lower die (6) after stamping forming, the pushing device (9) comprises a push rod (93) driven by a driving element (91) to move back and forth, and an elastic pushing part (94) arranged at the front end of the push rod (93); the elastic pushing part (94) is configured to pass over the workpiece when it moves towards the die with the push rod (93), and to push the workpiece away from the lower die (6) when it moves in the opposite direction.

7. A metal working stamping die according to claim 6 wherein: The pushing device (9) is also provided with a flatness detection element, which comprises a detection roller (910) that can roll above the push rod (93), and a sensor for sensing the vertical displacement of the detection roller (910).

8. A metal working stamping die according to claim 5 wherein: The brake element comprises three Z-shaped column rods (83) and trapezoidal notch plates (82), each Z-shaped column rod (83) is fixed on one side of the bottom of the cushion block one (84), the cushion block two (85) and the cushion block three (86) near the elastic expansion plate (81), and the three trapezoidal notch plates (82) are fixed on the expansion end side of the elastic expansion plate (81) in staggered stepped manner, and the top of the trapezoidal notch plate (82) is provided with a notch for accommodating the cylinder of the Z-shaped column rod (83) on the side close to the elastic expansion plate (81).

9. A metal working stamping die according to claim 7 wherein: The sensor comprises two side frames (95) fixed on the upper part of the push rod (93) on both sides and used for supporting the cavity cylinder (96), the top of the cavity cylinder (96) is embedded with a pressure gauge (97), and a plug rod (98) is slidingly installed in the cavity cylinder (96), and one section of the plug rod (98) is provided with a rotatable detection roller (910).

Images