Airbag component positioning and stamping forming device and forming method thereof

Abstract

This invention discloses a positioning stamping forming device and its forming method for airbag components, relating to the field of stamping equipment technology; it includes a forming mounting component, on which a flatness detection component is mounted to indicate blank bending; a series indicator component is mounted on the forming mounting component; the flatness detection component is used to conduct the series indicator component; a safety switch component is mounted on the side of the forming mounting component; a screw drive component is mounted on the safety switch component; by using the series indicator component in conjunction with the flatness detection component, the flatness of the blank can be automatically detected when the blank is placed, avoiding the failure to detect bending caused in the early processing stage.

Description

Technical Field

[0001] This invention relates to the field of stamping equipment technology, specifically to a positioning stamping forming device and forming method for airbag components. Background Technology

[0002] In the actual manufacturing of automotive steering wheel airbag covers, an airbag needs to be installed inside. This requires an airbag mounting bracket, typically a steel bracket, installed inside the airbag cover to support the airbag. During manufacturing, the airbag mounting bracket requires a stamping structure to fold and stamp its outer perimeter, facilitating accurate installation inside the airbag cover. Hydraulic stamping equipment is commonly used for airbag mounting brackets due to its high efficiency. However, current airbag mounting bracket stamping devices use a two-hand pressing control system. While this prevents workers from pressing the switch with both hands to start the stamping process and avoids hand injuries, some workers may still illegally press one switch with a heavy object. This makes it difficult to ensure that workers can simultaneously control the stamping process with both hands, resulting in poor safety. Furthermore, it hinders the automatic detection of the flatness of the blank after it is placed in the mold. If the blank has undergone deformation during pre-processing such as blank cutting, direct stamping can easily affect the stamping accuracy, and deformation errors still exist after stamping.

[0003] Therefore, the present invention proposes a positioning stamping forming device and forming method for airbag components. Summary of the Invention

[0004] The purpose of this invention is to provide a positioning stamping forming device and forming method for airbag components, so as to solve the problems mentioned in the background art that the current airbag mounting bracket stamping forming device is not convenient for operators to control the stamping simultaneously with both hands, and is not convenient for automatically detecting the flatness of the blank after it is placed in the mold.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a positioning stamping forming device for airbag components, comprising a forming mounting component, wherein a flatness detection component is mounted on the forming mounting component, the flatness detection component being used to indicate blank bending; a series indicator component is mounted on the forming mounting component; the flatness detection component is used to conduct the series indicator component; a safety switch component is mounted on the side of the forming mounting component; a screw drive component is mounted on the safety switch component; the screw drive component is used to prevent accidental activation; a stop safety component is mounted on the side of the forming mounting component; the forming mounting component includes: a forming base and an indicator light, the indicator light being fixedly mounted on the side of the forming base; four through holes are provided on the forming base; four insertion holes are provided on the forming base.

[0006] Preferably, the forming mounting component further includes: an upper die, a stamping hydraulic cylinder, and a stamping lower die. The upper die has four through holes. Four stamping hydraulic cylinders are fixedly mounted on the forming base, and the output shafts of the four stamping hydraulic cylinders are respectively fixedly mounted on the upper die by bolts. The stamping lower die is fixedly mounted on the forming base. The stamping lower die has four protruding positioning pins, which are used to position the blank. The stamping hydraulic cylinder is connected to an external pump station.

[0007] Preferably, the flatness detection component includes: a detection mounting ring, a lifting column, an auxiliary magnet, and a conductive block. Five detection mounting rings are fixedly installed on the lower stamping die, and the five detection mounting rings have the same structure. A lifting column is slidably inserted into the detection mounting ring. An auxiliary magnet is fixedly installed on the top of the lifting column, and the auxiliary magnet is used to magnetically attract the blank. A tension spring is sleeved on the outside of the lifting column, and the tension spring on the outside of the lifting column is connected between the lifting column and the detection mounting ring. A conductive block is slidably inserted into the bottom of the lifting column. A spring is sleeved on the bottom of the lifting column, and the spring at the bottom of the lifting column is connected between the conductive block and the lifting column. The tension spring on the outside of the lifting column is a low-elasticity spring. The top of the lifting column is higher than the lower stamping die.

[0008] Preferably, the series indicator includes: series electrical strips and electrical terminals. A row of series electrical strips is fixedly installed on the stamping die, and the series electrical strips are spaced apart. Electrical conductor blocks are aligned at the intervals between the series electrical strips. The electrical conductor blocks are used to press down on the blank to fit two adjacent series electrical strips. Electrical terminals are threadedly connected to the two end of the series electrical strips. The two electrical terminals are connected in series with a power supply through a wire and an indicator light.

[0009] Preferably, the safety switch includes: a safety mounting housing, a base plate, and a compression switch; the safety mounting housing is fixedly mounted on the molding seat by bolts; the base plate is fixedly mounted on the bottom of the safety mounting housing by bolts; the compression switch is fixedly mounted on the base plate; and the compression switch is located inside the safety mounting housing.

[0010] Preferably, the spiral drive component includes: a downward sliding strip and a drive screw, wherein the downward sliding strip is slidably inserted into the safety mounting housing; the downward sliding strip is used to press down the squeeze switch; two drive screws are threadedly connected to the downward sliding strip, and the bottoms of the two drive screws are respectively rotatably mounted on the base plate; torsion springs are respectively sleeved on the two drive screws, and the two ends of the torsion springs on the two drive screws are respectively fixedly connected to the drive screws and the base plate.

[0011] Preferably, the screw drive further includes: a crank handle, with the crank handles fixedly mounted on the tops of the two drive screws respectively; the extrusion switch is electrically connected to a pump station external to the stamping hydraulic cylinder.

[0012] Preferably, the stop safety component includes: a stop slider and a fixed electromagnet, wherein the stop slider is slidably inserted into the side of the forming seat; the fixed electromagnet is fixedly installed on the forming seat; a tension spring is connected between the stop slider and the forming seat; and the stop slider is used to stop the upper mold.

[0013] Preferably, the stop safety component further includes: a movable electromagnet, on which the movable electromagnet is fixedly mounted and aligned with the fixed electromagnet; the movable electromagnet, the fixed electromagnet, and two power terminals are connected in series with a power supply.

[0014] A method for positioning and stamping airbag components:

[0015] 1) Manually place the blank to be stamped into the lower die, and insert the punch holes on the blank into the four protruding positioning pins on the lower die for positioning;

[0016] 2) The operator manually controls the crank handle with both hands to rotate the drive screw, which drives the sliding bar to move down and press the extrusion switch, controlling the stamping hydraulic cylinder to drive the upper die to move down for stamping.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention employs a series of indicator components in conjunction with a flatness detection component to automatically detect the flatness of the blank during placement. This prevents the failure to detect bending that may have occurred during earlier processing, providing a clear indication and ensuring the accuracy of the stamped parts. It also prevents pre-existing bending deformation of the blank from causing elastic deformation after stamping. The structure is simple to inspect; workers can simply place the blank normally. The use of a stop safety component further standardizes the workers' effective inspection of the blank during stamping, preventing direct operation of the stamping process without timely observation of the indicator lights. The stop slider can stop the upper die, preventing direct downward pressure from the upper die. Automatic control is achieved, and the upper die can be automatically released when the blank flatness meets the standard.

[0019] By using a screw drive component in conjunction with a safety switch, the safety risks to workers during actual stamping can be reduced. By restricting the use of both hands, hand injuries caused by the stamping process can be avoided. At the same time, the anti-pinch method adopted by this structure is safer. In the traditional button-type protection method, workers can easily use heavy objects to press one of the button switches to perform unauthorized operations. By using the method that requires the simultaneous rotation of two drive screws, workers are restricted to controlling the stamping hydraulic cylinder to start only by rotation, which is safer. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a positioning and stamping device for airbag components according to the present invention;

[0021] Figure 2 This is a cross-sectional view of the internal structure of a positioning and stamping device for airbag components according to the present invention.

[0022] Figure 3 This is a schematic diagram of the molded mounting component structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the upper mold structure of the present invention;

[0024] Figure 5 For the present invention Figure 2 Enlarged view of the structure of region C in the middle;

[0025] Figure 6 This is a schematic diagram of the tandem prompting element structure of the present invention;

[0026] Figure 7 For the present invention Figure 3 Enlarged view of the structure of region D in the middle;

[0027] Figure 8 This is a schematic diagram of the bottom structure of the base plate of the present invention;

[0028] Figure 9 For the present invention Figure 2 Enlarged view of the structure of region E in the middle;

[0029] Figure 10 For the present invention Figure 6 Enlarged view of the structure of the F region.

[0030] In the diagram: 1. Molding mounting component; 101. Molding base; 1011. Indicator light; 102. Upper mold; 1021. Stamping hydraulic cylinder; 103. Stamping lower mold; 2. Flatness inspection component; 2011. Inspection mounting ring; 201. Lifting column; 202. Auxiliary magnet; 203. Electrical conductor block; 3. Series indicator component; 301. Series electrical strip; 302. Electrical terminal; 4. Safety switch component; 401. Safety mounting shell; 4011. Base plate; 402. Extrusion switch; 5. Screw drive component; 501. Downward sliding strip; 502. Drive screw; 5021. Handle; 6. Stop safety component; 601. Stop slider; 6011. Fixed electromagnet; 602. Movable electromagnet. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1: Please refer to Figures 1 to 10As shown:

[0033] This invention provides a technical solution: a positioning stamping forming device for airbag components, comprising a forming mounting part 1, a flatness detection part 2 mounted on the forming mounting part 1 for indicating blank bending; a series indicator part 3 mounted on the forming mounting part 1; the flatness detection part 2 for conducting the series indicator part 3; a safety switch part 4 mounted on the side of the forming mounting part 1; a screw drive part 5 mounted on the safety switch part 4; the screw drive part 5 for preventing accidental activation; a stop safety part 6 mounted on the side of the forming mounting part 1; the forming mounting part 1 includes: a forming base 101 and an indicator light 1011, the indicator light 1011 being fixedly mounted on the side of the forming base 101; four through holes and four insertion holes on the forming base 101.

[0034] The forming mounting component 1 further includes: an upper die 102, a stamping hydraulic cylinder 1021, and a stamping lower die 103. The upper die 102 has four through holes. Four stamping hydraulic cylinders 1021 are fixedly mounted on the forming base 101, and the output shafts of the four stamping hydraulic cylinders 1021 are respectively fixedly mounted on the upper die 102 by bolts. The stamping lower die 103 is fixedly mounted on the forming base 101. The stamping lower die 103 has four protruding positioning posts, which are used to position the blank. The stamping hydraulic cylinder 1021 is connected to an external pump station. The flatness detection component 2 includes: a detection mounting ring 2011, a lifting column 201, an auxiliary magnet 202, and a power conductor block 203. Five detection mounting rings 2011, a lifting column 201, an auxiliary magnet 202, and a power conductor block 203 are fixedly mounted on the stamping lower die 103. The five mounting rings 2011 are identical in structure. A lifting column 201 is slidably inserted into each mounting ring 2011. An auxiliary magnet 202 is fixedly installed on the top of the lifting column 201, and the auxiliary magnet 202 is used to magnetically attract the blank. A tension spring is sleeved on the outside of the lifting column 201, and the tension spring on the outside of the lifting column 201 connects the lifting column 201 and the mounting ring 2011. A conductor block 203 is slidably inserted into the bottom of the lifting column 201. A spring is sleeved on the bottom of the lifting column 201, and the spring at the bottom of the lifting column 201 connects the conductor block 203 and the lifting column 201. The tension spring on the outside of the lifting column 201 is a low-elasticity spring. The top of the lifting column 201 is higher than the stamping die 103. (Series indication) Component 3 includes: a series connecting strip 301 and a connecting terminal 302. A row of series connecting strips 301 is fixedly installed on the stamping die 103, and the series connecting strips 301 are spaced apart. The gaps between the series connecting strips 301 are aligned with the connecting conductor blocks 203. The connecting conductor blocks 203 are used to press the blank down to fit two adjacent series connecting strips 301. The two end series connecting strips 301 are respectively threaded with connecting terminals 302. The two connecting terminals 302 are connected in series with a power supply through a wire and an indicator light 1011. By using the series indicator component 3 in conjunction with the flatness detection component 2, the flatness of the blank can be automatically detected when the blank is placed, avoiding the failure to detect bending caused in the early processing. It can provide intuitive prompts to ensure the stamping process is smooth. The precision of the formed parts is improved, avoiding elastic deformation of blanks with inherent bending deformation after stamping. Deformed blanks also affect stress distribution during stamping. The structure is easy to inspect; workers can simply place the blanks normally. The four raised positioning pins on the lower die 103 are used to position the blanks. When the flat blank is placed on the lower die 103, the five auxiliary magnets 202 can magnetically attract the bottom of the blank. Under the weight of the blank, the lifting pins 201 can be pressed down, and the low-elasticity tension springs on the outside of the lifting pins 201 can be stretched. At this time, the conductor block 203 will move down and adhere to the same side of the series-connected electrical strip 301. At this time, a row of series-connected electrical strips 301 will be connected, and the corresponding series circuit of the indicator light 1011 will be connected, which can light up the indicator.

[0035] The safety switch component 4 includes: a safety mounting housing 401, a base plate 4011, and a compression switch 402. The safety mounting housing 401 is fixedly mounted on the forming seat 101 by bolts. The base plate 4011 is fixedly mounted on the bottom of the safety mounting housing 401 by bolts. The compression switch 402 is fixedly mounted on the base plate 4011. The compression switch 402 is located inside the safety mounting housing 401. The screw drive component 5 includes: a downward sliding strip 501 and a drive screw 502. The downward sliding strip 501 is slidably inserted into the safety mounting housing 401. The downward sliding strip 501 is used for downward compression. The pressure switch 402; two drive screws 502 are threadedly connected to the downward sliding bar 501, and the bottoms of the two drive screws 502 are rotatably mounted on the base plate 4011; torsion springs are sleeved on the two drive screws 502 respectively, and the two ends of the torsion springs on the two drive screws 502 are fixedly connected to the drive screws 502 and the base plate 4011 respectively; the screw drive component 5 also includes: a crank handle 5021, and a crank handle 5021 is fixedly mounted on the top of the two drive screws 502 respectively; the pressure switch 402 is electrically connected to the pump station connected to the stamping hydraulic cylinder 1021, and adopts a screw drive component. 5. Combined with the safety switch 4, it can reduce the safety risks for workers during actual stamping. By restricting both hands, it can prevent hand injuries caused by being pressed during stamping. Furthermore, the anti-pinch method used in this structure is safer. With traditional button-type protection, workers can easily use heavy objects to press one of the button switches for unauthorized operation. This structure utilizes the simultaneous rotation of two drive screws 502, restricting workers to controlling the stamping hydraulic cylinder 1021 only through rotation, making it safer and effectively reducing the risk of injury. The structure is simple and convenient for use during stamping. The operator needs to use both hands to rotate the drive screw 502 via the crank handle 5021, which drives the downward sliding bar 501 to move down and press the squeeze switch 402. This controls the stamping hydraulic cylinder 1021 to drive the stamping die 103 to move down for stamping. When the drive screw 502 is released, it can be rotated to reset its rotation under the elastic drive of the torsion spring on the outside of the drive screw 502. However, if the operator only rotates one drive screw 502 with one hand, the other end of the downward sliding bar 501 will be stuck by the unrotated drive screw 502, thus restricting the operator from operating according to the specifications.

[0036] In Example 2, based on Example 1, the stop safety component 6 includes: a stop slider 601 and a fixed electromagnet 6011. The stop slider 601 is slidably inserted into the side of the molding base 101; the fixed electromagnet 6011 is fixedly installed on the molding base 101; a tension spring connects the stop slider 601 and the molding base 101; the stop slider 601 is used to stop the upper mold 102; the stop safety component 6 also includes: a movable electromagnet 602, which is fixedly installed on the stop slider 601 and aligned with the fixed electromagnet 6011; the movable electromagnet 602, the fixed electromagnet 6011, and two power terminals 302 are connected in series with a power supply. Using the stop safety component 6 can further regulate the work of personnel. Effective inspection of the blank during stamping prevents direct stamping operation without timely observation of the indicator light 1011. The stop slider 601 can stop the upper die 102, preventing it from pressing down directly. Automatic control is possible. When the blank flatness meets the standard, the limit stop of the upper die 102 can be automatically released. The operation is simple and flexible, further reducing misjudgment. If the blank flatness is poor, the row of series-connected electric strips 301 cannot conduct electricity. At this time, the movable electromagnet 602 and the fixed electromagnet 6011 are not energized. Under the pull of the tension spring between the stop slider 601 and the forming seat 101, the stop slider 601 will be below the upper die 102, preventing the upper die 102 from moving down, thus prompting the staff to check in time.

[0037] A method for positioning and stamping airbag components:

[0038] 1) Manually place the blank to be stamped into the lower die 103, and insert the punch holes on the blank into the four protruding positioning pins on the lower die 103 for positioning;

[0039] 2) The staff manually controls the crank handle 5021 to rotate the drive screw 502, which drives the sliding bar 501 to move down and press the extrusion switch 402, thereby controlling the stamping hydraulic cylinder 1021 to drive the upper die 102 to move down and stamp.

[0040] The working principle of this embodiment is as follows: First, when the flat billet is placed in the lower mold 103, the five auxiliary magnets 202 can magnetically attract the bottom of the billet. Under the action of the billet's own weight, the lifting column 201 can be pressed down. The low-elasticity tension spring on the outside of the lifting column 201 can be stretched. At this time, the conductor block 203 will move down and adhere to the same side series connecting strip 301. At this time, a row of series connecting strips 301 will be conductive, and the corresponding series circuit of the indicator light 1011 will be conductive, and the light can be lit to indicate. Conversely, if the billet is bent, then the part of the billet cannot adhere to the lower mold 103, and it will not be able to effectively press down all the lifting columns 201. The weight of the billet is limited and insufficient to compress the lifting column 201. If the spring connecting the inner side of the conductor block 203 is not properly positioned, a portion of the conductor block 203 will be suspended. Consequently, the conductor block 203 cannot be lowered to contact the series-connected electrical strip 301 on the same side, and the indicator light 1011 will not illuminate. The spring connecting the inner side of the lifting column 201 to the conductor block 203 prevents compression during the blank placement stage (due to its high elasticity), facilitating the detection of blank flatness and ensuring smooth stamping under strong pressure. When the flat blank is placed on the lower die 103, a row of series-connected electrical strips 301 will activate the movable electromagnet 602 and the fixed electromagnet 601. When energized, the movable electromagnet 602 and the fixed electromagnet 6011 are installed in opposite directions. At this time, the movable electromagnet 602 and the fixed electromagnet 6011 repel each other, thus pushing the stop slider 601 and preventing it from blocking the upper die 102. Conversely, if the blank's flatness is poor, the series-connected electrical strips 301 cannot conduct electricity. In this case, when the movable electromagnet 602 and the fixed electromagnet 6011 are not energized, the stop slider 601 will be positioned below the upper die 102 under the tension spring between the stop slider 601 and the forming seat 101, preventing the upper die 102 from moving downwards and thus preventing stamping operations. When the blank is flat, the stop slider 601 does not block the upper die 102, allowing for controlled feeding. During stamping, the operator needs to use both hands to rotate the drive screw 502 via the crank handle 5021, which drives the sliding bar 501 to move down and press the extrusion switch 402. This controls the stamping hydraulic cylinder 1021 to drive the upper die 102 to move down and stamp the blank. When the drive screw 502 is released, under the elastic drive of the torsion spring on the outside of the drive screw 502, the drive screw 502 can be rotated to reset its rotation. The stamping hydraulic cylinder 1021 also drives the upper die 102 to move up and reset. The stamped airbag mounting bracket can then be manually removed. When the stamping hydraulic cylinder 1021 drives the upper die 102 to move down and stamp, the spring on the inside of the lifting column 201 will be compressed and contracted when the blank is pressed down on the lifting column 201.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An airbag component positioning and stamping forming device, comprising a forming mount (1) on which a flatness detecting member (2) is mounted, characterized in that: The flatness detection component (2) is used to indicate that the blank is bent; the forming mounting component (1) is equipped with a series of indicator components (3); A safety switch (4) is mounted on the side of the molded mounting component (1); a screw drive (5) is mounted on the safety switch (4); the screw drive (5) is used to prevent accidental activation. The molded mounting part (1) is equipped with a stop and safety part (6) on its side; The molding mounting component (1) includes: a molding base (101) and an indicator light (1011), with the indicator light (1011) fixedly mounted on the side of the molding base (101); the molding mounting component (1) also includes: an upper mold (102), a stamping hydraulic cylinder (1021), and a stamping lower mold (103). The flatness detection component (2) includes: a detection mounting ring (2011), a lifting column (201), an auxiliary magnet (202), and a conductor block (203). At least one detection mounting ring (2011) is fixedly installed on the stamping die (103). The lifting column (201) is slidably inserted into the detection mounting ring (2011). A tension spring is sleeved on the outside of the lifting column (201), and the tension spring on the outside of the lifting column (201) is connected between the lifting column (201) and the detection mounting ring (2011). The conductor block (203) is slidably inserted into the bottom of the lifting column (201). A spring is sleeved on the bottom of the lifting column (201), and the spring at the bottom of the lifting column (201) is connected between the conductor block (203) and the lifting column (201). The tension spring on the outside of the lifting column (201) is a low-elasticity spring. The top of the lifting column (201) is higher than the stamping die (103). The stop safety component (6) includes: a stop slider (601) and a fixed electromagnet (6011). The stop slider (601) is slidably inserted into the side of the molding seat (101). The fixed electromagnet (6011) is fixedly installed on the molding seat (101). A tension spring is connected between the stop slider (601) and the molding seat (101). The stop slider (601) is used to stop the upper mold (102).

2. The apparatus according to claim 1, wherein: At least one stamping hydraulic cylinder (1021) is fixedly installed on the forming base (101), and the output shafts of the four stamping hydraulic cylinders (1021) are respectively fixedly installed on the upper die (102); a stamping lower die (103) is fixedly installed on the forming base (101); at least one protruding positioning post is provided on the stamping lower die (103), and at least two protruding positioning posts on the stamping lower die (103) are used to position the blank; the stamping hydraulic cylinder (1021) is connected to an external pump station.

3. The apparatus according to claim 1, wherein: The series indicator (3) includes: series electrical strips (301) and electrical terminals (302). A row of series electrical strips (301) is fixedly installed on the stamping die (103), and the series electrical strips (301) are spaced apart. Electrical conductor blocks (203) are aligned at the intervals between the series electrical strips (301). The electrical conductor blocks (203) are used to press down on the blank to adhere to two adjacent series electrical strips (301). Electrical terminals (302) are respectively connected to the two end series electrical strips (301). The two electrical terminals (302) are connected in series with the indicator light (1011) through wires.

4. The apparatus according to claim 1, wherein: The safety switch component (4) includes: a safety mounting shell (401), a base plate (4011), and a squeeze switch (402). The safety mounting shell (401) is fixedly mounted on the molding base (101). The base plate (4011) is fixedly mounted on the bottom of the safety mounting shell (401). The squeeze switch (402) is fixedly mounted on the base plate (4011). The squeeze switch (402) is located inside the safety mounting shell (401).

5. The apparatus according to claim 4, wherein: The spiral drive component (5) includes: a pressing slide bar (501) and a drive screw (502). The pressing slide bar (501) is slidably inserted into the safety mounting housing (401). The pressing slide bar (501) is used to press down the squeeze switch (402). Two drive screws (502) are threadedly connected to the pressing slide bar (501). The bottoms of the two drive screws (502) are respectively rotatably mounted on the base plate (4011). A torsion spring is sleeved on each of the two drive screws (502), and the two ends of the torsion springs on the two drive screws (502) are respectively fixedly connected to the drive screws (502) and the base plate (4011).

6. The apparatus according to claim 5, wherein: The screw drive component (5) further includes: a crank handle (5021), with the crank handle (5021) fixedly installed on the top of each of the two drive screws (502); the compression switch (402) is electrically connected to the pump station connected to the external of the stamping hydraulic cylinder (1021).

7. The apparatus according to claim 3, wherein: The stop safety component (6) further includes: a movable electromagnet (602), on which the movable electromagnet (602) is fixedly installed, and the movable electromagnet (602) is aligned with the fixed electromagnet (6011); the movable electromagnet (602), the fixed electromagnet (6011) and the two power terminals (302) are connected in series with a power supply.

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