Lightweight rear floor frame structure stamping device and using method thereof

Abstract

The invention discloses a lightweight rear floor frame structure stamping device and a using method thereof, and relates to the technical field of stamping devices.The lightweight rear floor frame structure stamping device comprises a bottom frame and a top frame, two guide plates are fixedly arranged on the top face of the bottom frame, the top frame is fixedly arranged on the top faces of the two guide plates, and a stamping mechanism is arranged on the bottom face of the top frame; a die groove corresponding to the stamping mechanism is formed in the bottom frame in a sunken mode. When the material pushing mechanism moves, the material pushing mechanism is matched with the wave-shaped groove to control the first blowing mechanism to continuously spray airflow, so that the surface of a workpiece is blown through the sprayed airflow, and the inner wall of the die cavity is blown through the second blowing mechanism, so that the possibility that the punching effect is influenced by sundries when the workpiece is punched is reduced; the workpiece is pushed towards the direction of the die cavity through the pushing mechanism, and when the pushing mechanism moves to be separated from the groove, the pushing mechanism shrinks to clamp the workpiece and corrects the position of the workpiece at the same time, so that the workpiece can accurately fall into the die cavity to be stamped.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stamping devices, in particular to a light-weight rear floor frame structure stamping device and a use method thereof. BACKGROUND

[0002] The rear floor frame of the vehicle body is the core load-bearing structure of the rear part of the vehicle body bottom, mainly used for supporting rear-row seats, trunks, auxiliary frames and other components, while also bearing collision energy absorption and improving the stiffness of the vehicle body. It usually includes the rear section of the longitudinal beam on both sides and the cross beam connecting the longitudinal beam. In order to reduce the overall weight of the rear floor, a light-weight rear floor frame structure can be made of light materials. The rear floor frame structure needs to use a stamping device for stamping forming when processing.

[0003] The existing part of the stamping device directly puts the workpiece into the stamping device for stamping when stamping the workpiece. At this time, if there are sundries on the surface of the workpiece or in the mold groove, the sundries will easily affect the final product effect of the workpiece when the workpiece is stamped. SUMMARY

[0004] In order to improve the problem that the stamping device directly puts the workpiece into the stamping device for stamping when stamping the workpiece, and at this time, if there are sundries on the surface of the workpiece or in the mold groove, the sundries will easily affect the final product effect of the workpiece when the workpiece is stamped.

[0005] The present application provides a light-weight rear floor frame structure stamping device and a use method thereof, which adopts the following technical scheme: A light-weight rear floor frame structure stamping device, comprising a bottom frame and a top frame, two guide plates are fixedly arranged on the top surface of the bottom frame, the top frame is fixedly arranged on the top surface of the two guide plates, a stamping mechanism is arranged on the bottom surface of the top frame, a mold groove corresponding to the stamping mechanism is arranged on the bottom frame, a pushing mechanism is arranged on the right end of the bottom frame, a first blowing mechanism is arranged in the pushing mechanism, a wave-shaped groove is arranged on the top surface of the bottom frame, the bottom of the first blowing mechanism is in sliding fit with the inner wall of the wave-shaped groove, and a second blowing mechanism is arranged in the guide plate.

[0006] Optionally, in the light-weight rear floor frame structure stamping device, the stamping mechanism comprises a gas cylinder and a stamping block, the gas cylinder is fixedly arranged on the bottom surface of the top frame, the stamping block is fixedly arranged on the protruding end of the gas cylinder, a limiting rod is fixedly arranged on the side wall of the stamping block, and the end of the limiting rod away from the stamping block is in sliding fit with the inner wall of the top frame. An infrared sensor for detecting the position of the workpiece is arranged on the side wall of the stamping block, and the infrared sensor is electrically connected with the gas cylinder.

[0007] Optionally, in the stamping device for the lightweight rear floor frame structure, the bottom surface of the base frame is provided with a first electric push rod, the extending end of the first electric push rod is fixedly provided with a material lifting rod, and the upper end of the material lifting rod is inserted into the die groove and flush with the inner bottom wall of the die groove.

[0008] Optionally, in the stamping device for the lightweight rear floor frame structure, the side wall of the guide plate is provided with two grooves, one of which is arranged at the right end of the guide plate, and the other is arranged at the position corresponding to the die groove.

[0009] Optionally, in the stamping device for the lightweight rear floor frame structure, the material pushing mechanism comprises a second electric push rod and a horizontal plate, the second electric push rod is fixedly arranged on the top surface of the base frame, the horizontal plate is fixedly arranged on the extending end of the second electric push rod, both ends of the horizontal plate are provided with sliding grooves, and clamping plates are slidingly arranged in the two sliding grooves.

[0010] Optionally, in the stamping device for the lightweight rear floor frame structure, the clamping plate comprises a sliding block and a movable plate, the sliding block is slidingly arranged in the sliding groove and matched with the inner wall of the sliding groove, the movable plate is fixedly arranged at one end of the sliding block extending out of the sliding groove, the sliding block is connected with the inner wall of the sliding groove through a first spring, the movable plate is provided with a movable cavity, the bottom surface of the movable plate is fixedly provided with a supporting plate, and the supporting plate is triangular.

[0011] Optionally, in the stamping device for the lightweight rear floor frame structure, the first blowing mechanism comprises a first piston plate and a first circular rod, the first piston plate is movably arranged in the movable cavity, one end of the first circular rod is inserted into the movable plate and fixedly connected with the first piston plate, the other end of the first circular rod is slidingly matched with the inner wall of the wave-shaped groove, the first piston plate is connected with the inner bottom wall of the movable cavity through a second spring, the top surface of the movable plate is fixedly inserted with a plurality of first nozzles, and the gas outlet end of the first nozzle is curved towards the base frame.

[0012] Optionally, in the stamping device for the lightweight rear floor frame structure, the inner wall of the left end of the guide plate is provided with a cavity, and the second blowing mechanism is arranged in the cavity and communicates with the inner wall of the left groove.

[0013] Optionally, in the light-weight rear floor frame structure stamping device, the second blowing mechanism comprises a second piston plate and a second round rod, the second piston plate is movably arranged in the cavity, the second piston plate is connected with the inner wall of the cavity through the third spring, one end of the second round rod is inserted into the cavity and fixedly connected with the second piston plate, the second round rod is inserted into the groove, the top surface of the guide plate is fixedly provided with a hollow plate, the hollow plate is communicated with the cavity through the air guide pipe, and the side wall of the hollow plate is fixedly inserted with a plurality of second nozzles, and the gas outlet end of the second nozzle is curved towards the die groove.

[0014] Another technical scheme of the present application is a use method of the light-weight rear floor frame structure stamping device, comprising the following steps: S101: first, the workpiece is placed in the pushing mechanism, then the workpiece is pushed towards the die groove through the pushing mechanism, when the pushing mechanism moves away from the groove, the pushing mechanism is contracted to clamp the workpiece, and the position of the workpiece is corrected at the same time; S102: the first blowing mechanism continuously sprays gas flow through the wave-shaped groove, so that the workpiece surface is blown by the sprayed gas flow; S103: when the workpiece moves to the die groove, the pushing mechanism coincides with another groove, at this time, the pushing mechanism expands so that the workpiece loses the limit and falls into the die groove, and the second blowing mechanism moves under the control of the movement of the pushing mechanism, then the workpiece is formed by stamping through the stamping mechanism; S104: after the workpiece is stamped, the stamping mechanism is reset, then the workpiece is pushed out through the first electric push rod, the pushing mechanism is reset to the initial state, so as to facilitate the subsequent action, and the pushing mechanism is separated from the second blowing mechanism, so that the inner wall of the die groove is blown by the second blowing mechanism.

[0015] In summary, the present application has at least one beneficial effect: When the pushing mechanism moves, the first blowing mechanism continuously sprays gas flow through the cooperation of the wave-shaped groove, so that the workpiece surface is blown by the sprayed gas flow, and the inner wall of the die groove is blown by the second blowing mechanism, so as to reduce the possibility that the workpiece is affected by impurities when being stamped; The workpiece is pushed towards the die groove through the pushing mechanism, when the pushing mechanism moves away from the groove, the pushing mechanism is contracted to clamp the workpiece, and the position of the workpiece is corrected at the same time, so that the workpiece can accurately fall into the die groove for stamping. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the three-dimensional structure of the present application; Figure 2is a partial stereoscopic structure sectional view of the present application; Figure 3 is a partial stereoscopic structure sectional view of the guide plate of the present application; Figure 4 is a partial stereoscopic structure sectional view of the present application; Figure 5 is a partial stereoscopic structure schematic view of the pushing mechanism of the present application; Figure 6 is a partial stereoscopic structure schematic view of the pushing mechanism of the present application; Figure 7 is a partial stereoscopic structure sectional view of the first blowing mechanism of the present application; Figure 8 is a partial stereoscopic structure sectional view of the second blowing mechanism of the present application.

[0017] In the figure: 1, base frame; 11, first electric push rod; 12, ejector rod; 2, top frame; 3, guide plate; 31, groove; 32, cavity; 4, stamping mechanism; 41, air cylinder; 42, stamping block; 43, limit rod; 44, infrared sensor; 5, die groove; 6, pushing mechanism; 61, second electric push rod; 62, cross plate; 63, sliding groove; 64, clamping plate; 641, sliding block; 642, movable plate; 643, first spring; 644, movable cavity; 645, support plate; 65, guide rod; 7, blowing mechanism; 71, first piston plate; 72, first round rod; 73, second spring; 74, first nozzle; 8, wave-shaped groove; 9, second blowing mechanism; 91, second piston plate; 92, second round rod; 93, third spring; 94, hollow plate; 95, air guide pipe; 96, second nozzle. DETAILED DESCRIPTION

[0018] The following will be described in detail below Figures 1-8 The present application will be further described in detail.

[0019] Please refer to the drawings in the specification Figures 1-8 The present application provides an embodiment: a light-weight rear floor frame structure stamping device, comprising a base frame 1 and a top frame 2, the top surface of the base frame 1 is fixedly provided with two guide plates 3, the top frame 2 is fixedly provided on the top surface of the two guide plates 3, the bottom surface of the top frame 2 is provided with a stamping mechanism 4, the base frame 1 is recessed to form a die groove 5 corresponding to the stamping mechanism 4, the stamping mechanism 4 comprises an air cylinder 41 and a stamping block 42, the air cylinder 41 is fixedly provided on the bottom surface of the top frame 2, the stamping block 42 is fixedly provided on the protruding end of the air cylinder 41, the air cylinder 41 is used to push the stamping block 42 to move, so that the stamping block 42 cooperates with the die groove 5 to facilitate the stamping forming of the workpiece.

[0020] The side wall of the stamping block 42 is fixedly provided with a limiting rod 43, one end of the limiting rod 43 away from the stamping block 42 is in sliding fit with the inner side wall of the top frame 2, when the stamping block 42 moves, the limiting rod 43 moves synchronously, at this time, the stamping block 42 is limited by the limiting rod 43 and the top frame 2, so as to increase the stability when the stamping block 42 moves.

[0021] The side wall of the stamping block 42 is provided with an infrared sensor 44 for detecting the position of the workpiece, the infrared sensor 44 is electrically connected with the air cylinder 41, the position of the workpiece is detected by the infrared sensor 44, when the infrared sensor 44 detects that the workpiece moves to the position below the stamping block 42, the signal is transmitted to the inside of the air cylinder 41, at this time, the stamping block 42 is pushed downward by the air cylinder 41, so as to stamp the workpiece.

[0022] It should be noted that the stamping mechanism 4 and the die groove 5 are all existing devices, which are adjusted according to the actual use.

[0023] The bottom surface of the bottom frame 1 is provided with a first electric push rod 11, the extending end of the first electric push rod 11 is fixedly provided with a material pushing rod 12, the upper end of the material pushing rod 12 is inserted into the die groove 5 and flush with the inner bottom wall of the die groove 5, when the workpiece is stamped and formed, the material pushing rod 12 is pushed upward by the first electric push rod 11, and then the workpiece is pushed away from the die groove 5 by the material pushing rod 12, so as to realize the material returning of the workpiece.

[0024] The right end of the bottom frame 1 is provided with a material pushing mechanism 6, the side wall of the guide plate 3 is provided with two grooves 31, one groove 31 is provided at the right end of the guide plate 3, and the other groove 31 is provided at the position corresponding to the die groove 5, when the material pushing mechanism 6 coincides with the groove 31, the material pushing mechanism 6 expands, so that the operator puts the workpiece into the material pushing mechanism 6, when the material pushing mechanism 6 moves and separates from the groove 31, the material pushing mechanism 6 is shrunk to clamp and fix the workpiece, when the workpiece moves to the position of the die groove 5, the material pushing mechanism 6 coincides with the groove 31 again, so that the material pushing mechanism 6 expands to make the workpiece lose the limitation and fall into the die groove 5.

[0025] The material pushing mechanism 6 comprises a second electric push rod 61 and a cross plate 62, the second electric push rod 61 is fixedly arranged on the top surface of the bottom frame 1, the cross plate 62 is fixedly arranged on the extending end of the second electric push rod 61, both ends of the cross plate 62 are provided with sliding grooves 63, both sliding grooves 63 are slidably provided with clamping plates 64, one side of the clamping plate 64 towards the guide plate 3 is fixedly provided with a guide rod 65, the guide rod 65 is located in the right groove 31 and in sliding fit with the inner wall of the right groove 31, the cross plate 62 and the two clamping plates 64 are moved by the second electric push rod 61, when the guide rod 65 coincides with the groove 31, the guide rod 65 is inserted into the groove 31, so as to move the clamping plate 64 towards the guide plate 3.

[0026] The clamping plate 64 comprises a sliding block 641 and a movable plate 642. The sliding block 641 is located in the sliding groove 63 and is in sliding fit with the inner wall of the sliding groove 63. The movable plate 642 is fixedly arranged at one end of the sliding block 641 extending out of the sliding groove 63. The sliding block 641 is connected with the inner wall of the sliding groove 63 through the first spring 643. The movable plate 642 is provided with a movable cavity 644. The bottom surface of the movable plate 642 is fixedly provided with a supporting plate 645 which is triangular in shape. The first spring 643 facilitates the movement of the sliding block 641 and the movable plate 642 towards the direction of the guide plate 3, so as to make the guide rod 65 always in contact with the side wall of the guide plate 3, and the position of the sliding block 641 and the movable plate 642 can be adjusted through the sliding groove 63.

[0027] The pushing mechanism 6 is provided with a first blowing mechanism 7. The top surface of the base frame 1 is provided with a wave-shaped groove 8. The bottom of the first blowing mechanism 7 is in sliding fit with the inner wall of the wave-shaped groove 8. The first blowing mechanism 7 comprises a first piston plate 71 and a first circular rod 72. The first piston plate 71 is movably arranged in the movable cavity 644. One end of the first circular rod 72 is inserted into the movable plate 642 and is fixedly connected with the first piston plate 71. The other end of the first circular rod 72 is in sliding fit with the inner wall of the wave-shaped groove 8. The first piston plate 71 is connected with the inner bottom wall of the movable cavity 644 through the second spring 73. The top surface of the movable plate 642 is fixedly inserted with a plurality of first nozzles 74. The gas outlet end of the first nozzle 74 is curved towards the direction of the base frame 1. When the movable plate 642 moves horizontally, the first blowing mechanism 7 will move as a whole. In this process, the second spring 73 continuously exerts a pulling force, so that the first piston plate 71 and the first circular rod 72 always remain in contact with the bottom surface of the wave-shaped groove 8. Due to the special profile design of the wave-shaped groove 8, the movement of the movable plate 642 will force the first circular rod 72 to make up-and-down reciprocating motion, so as to drive the first piston plate 71 to make piston motion in the movable cavity 644. This reciprocating motion continuously compresses the air in the movable cavity 644, so as to continuously press the air flow into the first nozzle 74, and finally form a stable jet air flow, thereby realizing effective blowing of the surface of the workpiece.

[0028] The guide plate 3 is provided with a second blowing mechanism 9. The inner wall of the left end of the guide plate 3 is provided with a cavity 32. The second blowing mechanism 9 is arranged in the cavity 32, and the cavity 32 is in communication with the inner wall of the left-side groove 31. The cavity 32 facilitates the installation of the second blowing mechanism 9.

[0029] The second blowing mechanism 9 comprises a second piston plate 91 and a second round rod 92. The second piston plate 91 is movably arranged in the cavity 32 and connected to the inner wall of the cavity 32 through a third spring 93. One end of the second round rod 92 is inserted into the cavity 32 and fixedly connected to the second piston plate 91. The second round rod 92 is inserted into the groove 31. The top surface of the guide plate 3 is fixedly provided with a hollow plate 94. The hollow plate 94 is communicated with the cavity 32 through a gas guide pipe 95. A plurality of second nozzles 96 are fixedly inserted into the side wall of the hollow plate 94. The gas outlet end of the second nozzle 96 is curved towards the direction of the mold groove 5.

[0030] In the working process, the guide rod 65 moves along the predetermined trajectory. When the front end of the guide rod 65 enters the inside of the groove 31, it forms precise mechanical contact with the end of the second round rod 92. With the continuous advancement of the guide rod 65, the second round rod 92 is pushed to move axially through the interaction force of the contact surface, thereby driving the second piston plate 91 to move linearly in the cavity 32. This movement process simultaneously causes the third spring 93 to be elastically deformed, storing mechanical energy. When the guide rod 65 completes the working stroke and starts to reset the movement with the movable plate 642, the second round rod 92 loses the external force. At this time, the elastic potential energy stored in the third spring 93 is released, generating a restoring force to accurately pull the second piston plate 91 back to the initial position. The reset movement of the piston plate forms a process of converting negative pressure to positive pressure in the cavity 32. Negative pressure is generated at the early stage of reset to suck in air. Positive pressure is formed at the later stage of reset to deliver compressed air to the flow channel of the hollow plate 94 through the gas guide pipe 95. The hollow plate 94 is designed with an optimized air flow channel to ensure that compressed air can be evenly distributed to each second nozzle 96. These nozzles can concentrate and spray air flow to each corner of the mold groove 5. The sprayed air flow has enough kinetic energy to effectively remove metal chips, dust and other processing residues remaining in the mold groove 5.

[0031] In summary, the operator first accurately places the workpiece to be processed in the pushing mechanism 6, and then pushes the workpiece smoothly towards the mold groove 5 through the pushing mechanism 6. In the pushing process, the guide part of the pushing mechanism 6 mechanically links with the wave-shaped groove 8. This specially designed wave-shaped groove 8 accurately controls the reciprocating movement of the first piston plate 71 of the first blowing mechanism 7 through the cam mechanism principle, thereby generating air flow and spraying to the surface of the workpiece through the first nozzle 74 to effectively remove surface dust. When the workpiece is pushed to the upper side of the mold groove 5, the pushing mechanism 6 is moved to coincide with the groove 31, the pushing mechanism 6 is expanded to lose the limit of the workpiece, at this time, the workpiece is accurately dropped into the cavity of the mold groove 5 under the action of gravity, at the same time, the continuous movement of the pushing mechanism 6 triggers the work of the second blowing mechanism 9, so that the second nozzle 96 of the second blowing mechanism 9 blows the cavity of the mold groove 5, ensures that there is no any residual in the cavity, finally, the stamping mechanism 4 precisely stamping forming the workpiece.

[0032] In order to better show a kind of lightweight rear floor frame structure stamping device, the present embodiment proposes a kind of lightweight rear floor frame structure stamping device usage method, including the following steps: Step one: first, the workpiece is placed in the pushing mechanism 6, then the workpiece is pushed to the direction of mold groove 5 by pushing mechanism 6, when pushing mechanism 6 moves to separate from groove 31, pushing mechanism 6 is retracted to clamp the workpiece, and the position of the workpiece is corrected at the same time; Step two: control the first blowing mechanism 7 to continuously spray airflow by wave-shaped groove 8, so as to blow the surface of the workpiece by the sprayed airflow; Step three: when the workpiece moves to the mold groove 5, the pushing mechanism 6 coincides with another groove 31, at this time, the pushing mechanism 6 is expanded to make the workpiece lose the limit and fall into the mold groove 5, and the second blowing mechanism 9 is moved along with the movement of the pushing mechanism 6, then the workpiece is formed by stamping mechanism 4; Step four: after the workpiece is stamped, the stamping mechanism 4 is reset, then the workpiece is retreated by pushing the top rod 12 to move by the first electric push rod 11, and then the pushing mechanism 6 is reset to the initial state, so as to carry out subsequent action, and the pushing mechanism 6 is separated from the second blowing mechanism 9, so as to blow the inner wall of the mold groove 5 by the airflow sprayed by the second blowing mechanism 9.

[0033] The above are preferred embodiments of the present application, not limited to the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A light-weighted rear floor frame structure stamping device, comprising a bottom frame (1) and a top frame (2), characterized in that: The top surface of the chassis (1) is fixedly provided with two guide plates (3), the top frame (2) is fixedly arranged on the top surface of the two guide plates (3), the bottom surface of the top frame (2) is provided with a punching mechanism (4), the bottom surface of the chassis (1) is recessed to form a die groove (5) corresponding to the punching mechanism (4), the right end of the chassis (1) is provided with a pushing mechanism (6), the pushing mechanism (6) is internally provided with a first blowing mechanism (7), the top surface of the chassis (1) is provided with a wave-shaped groove (8), the bottom of the first blowing mechanism (7) is in sliding fit with the inner wall of the wave-shaped groove (8), and the guide plate (3) is internally provided with a second blowing mechanism (9).

2. The light-weight rear floor frame structure press apparatus according to claim 1, characterized by: The punching mechanism (4) comprises a pneumatic cylinder (41) and a punching block (42), the pneumatic cylinder (41) is fixedly arranged on the bottom surface of the top frame (2), and the punching block (42) is fixedly arranged on the extending end of the pneumatic cylinder (41); a limiting rod (43) is fixedly arranged on the side wall of the punching block (42), and the end, away from the punching block (42), of the limiting rod (43) is in sliding fit with the inner side wall of the top frame (2). An infrared sensor (44) for detecting the position of a workpiece is arranged on the side wall of the punching block (42), and the infrared sensor (44) is electrically connected with the pneumatic cylinder (41).

3. The light-weight rear floor frame structure stamping device according to claim 1, characterized in that: The bottom surface of the chassis (1) is provided with a first electric push rod (11), the extending end of the first electric push rod (11) is fixedly provided with a material lifting rod (12), and the upper end of the material lifting rod (12) is inserted into the die groove (5) and flush with the inner bottom wall of the die groove (5).

4. The light-weight rear floor frame structure stamping device according to claim 1, characterized in that: Two grooves (31) are formed in the side wall of the guide plate (3), one of the grooves (31) is formed at the right end of the guide plate (3), and the other groove (31) is formed at the position corresponding to the die groove (5); and the edges of the inner walls of the two grooves (31) are all rounded.

5. The light-weight rear floor frame structure stamping device according to claim 4, characterized in that: The pushing mechanism (6) comprises a second electric push rod (61) and a horizontal plate (62), the second electric push rod (61) is fixedly arranged on the top surface of the chassis (1), and the horizontal plate (62) is fixedly arranged on the extending end of the second electric push rod (61); two slide grooves (63) are formed in the two ends of the horizontal plate (62), and a clamping plate (64) is slidably arranged in each of the slide grooves (63); a guide rod (65) is fixedly arranged on the side of the clamping plate (64) facing the guide plate (3), and the guide rod (65) is located in the right groove (31) and is in sliding fit with the inner wall of the right groove (31).

6. The light-weight rear floor frame structure stamping device according to claim 5, characterized in that: The clamping plate (64) comprises a sliding block (641) and a movable plate (642), the sliding block (641) is located in the slide groove (63) and is in sliding fit with the inner wall of the slide groove (63), the movable plate (642) is fixedly arranged at the end of the sliding block (641) extending out of the slide groove (63), the sliding block (641) is connected with the inner wall of the slide groove (63) through the first spring (643), the movable plate (642) is internally provided with a movable cavity (644), the bottom surface of the movable plate (642) is fixedly provided with a supporting plate (645), and the supporting plate (645) is triangular.

7. The light-weight rear floor frame structure stamping device according to claim 6, characterized in that: The first blowing mechanism (7) comprises a first piston plate (71) and a first round rod (72), the first piston plate (71) is movably arranged in the movable cavity (644), one end of the first round rod (72) is inserted into the movable plate (642) and is fixedly connected with the first piston plate (71), the other end of the first round rod (72) is in sliding fit with the inner wall of the wave-shaped groove (8), the first piston plate (71) is connected with the inner bottom wall of the movable cavity (644) through the second spring (73), and the top surface of the movable plate (642) is fixedly inserted with a plurality of first nozzles (74), and the gas outlet end of the first nozzle (74) is curved towards the direction of the chassis (1).

8. The light-weight rear floor frame structure stamping device according to claim 4, characterized in that: The inner wall of the left end of the guide plate (3) is provided with a cavity (32), and the second blowing mechanism (9) is arranged in the cavity (32) and communicates with the inner wall of the left groove (31).

9. The light-weight rear floor frame structure stamping device according to claim 8, characterized in that: The second blowing mechanism (9) comprises a second piston plate (91) and a second round rod (92), the second piston plate (91) is movably arranged in the cavity (32), the second piston plate (91) is connected with the inner wall of the cavity (32) through the third spring (93), one end of the second round rod (92) is inserted into the cavity (32) and is fixedly connected with the second piston plate (91), the second round rod (92) is inserted into the groove (31), the top surface of the guide plate (3) is fixedly provided with a hollow plate (94), the hollow plate (94) is communicated with the cavity (32) through the air guide pipe (95), and the side wall of the hollow plate (94) is fixedly inserted with a plurality of second nozzles (96), and the gas outlet end of the second nozzle (96) is curved towards the direction of the die slot (5).

10. A method of using a light-weight rear floor frame structure stamping apparatus comprising the light-weight rear floor frame structure stamping apparatus according to any one of claims 1 to 9, characterized in that, Further comprising the following steps: S101: first, the workpiece is placed in the pushing mechanism (6), then the workpiece is pushed towards the die slot (5) through the pushing mechanism (6), when the pushing mechanism (6) moves away from the groove (31), the pushing mechanism (6) is retracted to clamp the workpiece, and the position of the workpiece is corrected; S102: the first blowing mechanism (7) is controlled to continuously spray gas flow through the wave-shaped groove (8), so that the workpiece surface is blown by the sprayed gas flow; S103: when the workpiece moves to the die slot (5), the pushing mechanism (6) coincides with another groove (31), at this time, the pushing mechanism (6) is expanded so that the workpiece loses the limit and falls into the die slot (5), and the second blowing mechanism (9) is moved by controlling the movement of the pushing mechanism (6), then the workpiece is formed by the stamping mechanism (4); S104: after the workpiece is stamped, the stamping mechanism (4) is reset, then the workpiece is discharged by moving the ejector rod (12) through the first electric push rod (11), and then the pushing mechanism (6) is reset to the initial state, so as to facilitate subsequent actions, and the pushing mechanism (6) is separated from the second blowing mechanism (9), so that the inner wall of the die slot (5) is blown by the second blowing mechanism (9).

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