Metal guardrail plate punch forming machine

Abstract

The invention belongs to the technical field of plate stamping, and particularly relates to a metal guardrail plate stamping forming machine which comprises a rack, a punching mechanism, a pressing forming mechanism and a transferring mechanism, and the punching mechanism, the pressing forming mechanism and the transferring mechanism are arranged on the rack. The transferring mechanism comprises a hook and a driving device for driving the hook to move, the hook has the freedom degree of reciprocating motion between the punching mechanism and the pressing forming mechanism by means of the driving device, the hole of the plate and the hook are in hooking fit, and feeding or discharging is achieved by means of reciprocating motion of the hook. The transferring mechanism is additionally arranged, the hooks of the transferring mechanism are used for being matched with the holes of the plates in a hooking mode, rapid feeding and discharging of the guardrail plates are achieved, manual operation is not needed in the whole process, mechanical production of the metal guardrail plates is achieved, and the working efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of plate stamping, and in particular relates to a metal guardrail plate stamping forming machine. Background Art

[0002] Metal guardrail panels are mainly used for guardrail construction on roads. The overall structure of the guardrail panels is wavy. During production, they are generally punched first, and then the flat plate with holes is placed in a pressing machine for pressing. The stamping machine includes a wavy pressing plate and a bottom mold that matches the shape of the pressing plate. The plate is clamped and pressed by the pressing plate and the bottom mold to form a finished metal guardrail panel.

[0003] Since the guardrail board is long, its weight is also large. At the same time, the board itself is thin. After being pressed and formed by the pressing machine, the finished guardrail board will fit with the bottom mold, resulting in the lack of suitable clamping points during the transportation process. This makes it difficult to load and unload the finished guardrail board. Summary of the invention

[0004] In order to solve the problems existing in the above-mentioned prior art, the present invention provides a metal guardrail plate stamping and forming machine. By adding a transfer mechanism, the hooks of the transfer mechanism are used to hook and cooperate with the holes of the plate to achieve rapid loading and unloading of the guardrail plate. The entire process does not require manual operation, thereby realizing the mechanized production of metal guardrail plates and improving work efficiency.

[0005] The specific technical solution adopted by the present invention is: A metal guardrail plate stamping and forming machine comprises a frame and a punching mechanism, a pressing and forming mechanism and a transfer mechanism arranged on the frame. A material roll is punched and cut into a plate with holes by means of the punching mechanism. The pressing and forming mechanism comprises a pressing plate and a shaping bottom die. The pressing plate has the freedom to rise and fall in the vertical direction. A shaping channel is formed between the pressing plate and the shaping bottom die. The plate at the discharge end of the punching mechanism is moved into the shaping channel by means of the transfer mechanism and bent into shape. The transfer mechanism is located between the punching mechanism and the pressing and forming mechanism. The transfer mechanism comprises a hook and a driving device for driving the hook to move. The hook has the freedom to move back and forth between the punching mechanism and the pressing and forming mechanism by means of the driving device. The hole of the plate forms a hook-hanging fit with the hook and is loaded or unloaded by means of the reciprocating movement of the hook.

[0006] The transfer mechanism is symmetrically arranged in two groups along the feeding direction of the plate. The hooks of the two groups of the transfer mechanism are respectively aligned with the holes on both sides of the plate. The transfer mechanism is suspended above the forming bottom mold with the help of a lifting and telescopic cylinder. The transfer mechanism has the freedom to lift and lower in the vertical direction with the help of the lifting and telescopic cylinder.

[0007] The driving device includes a feeding winch and a reset winch. The reset winch is suspended on the feeding side of the press-forming mechanism by means of a group of lifting and telescopic cylinders, and the feeding winch is suspended on the discharge end side of the press-forming mechanism by means of another group of lifting and telescopic cylinders. A driving rope is arranged between the reset winch and the feeding winch. The driving rope has the freedom to move back and forth along the feeding direction of the plate by means of the rotation of the feeding winch and the reset winch. The hook is fixedly connected to the driving rope, and the hook has the freedom to move back and forth between the punching mechanism and the press-forming mechanism by means of the driving rope.

[0008] A toggling clamp is also provided between the two groups of driving ropes. One group of the toggling clamp is provided on the feeding side and the discharging side of the pressing and forming mechanism respectively. The toggling clamp has the freedom to open and close the driving ropes on both sides. The driving rope is offset and avoids the molding channel with the help of the toggling clamp.

[0009] A material distribution platform is also arranged between the punching mechanism and the pressing and forming mechanism. A movable groove for the hook to pass through is arranged on the surface of the material distribution platform. The movable groove is arranged along the feeding direction of the plate.

[0010] The punching mechanism includes a feed pair of rollers, a discharge pair of rollers, a punch seat and a die located between the feed pair of rollers and the discharge pair of rollers. The punch seat has the freedom to rise and fall relative to the die with the help of a punching telescopic cylinder. The sheet material passes between the punch seat and the die with the help of the feed pair of rollers and a punched hole is formed.

[0011] The opposing surfaces of the pressing plate and the shaping bottom mold are in mutually matching wave-shaped structures. The pressing and forming mechanism also includes a lifting seat, and the pressing plate has the freedom to lift and lower in the vertical direction by means of the lifting seat.

[0012] The discharge end of the press-forming mechanism is also provided with a unloading mechanism, and a plurality of groups of the unloading mechanisms are arranged at intervals along the feeding direction of the plate. The unloading mechanism includes a support rod, a swing rod and a buffer spring located between the support rod and the swing rod. The support rod is arranged in a vertical direction and is fixedly connected to the frame. The hinged end of the support rod is hinged to the top of the support rod, and the free end of the support rod is provided with a fixed clamp with opening and closing freedom. The finished guardrail plate is transferred to the unloading mechanism with the help of the transfer mechanism to cooperate with the fixed clamp, and the finished guardrail plate clamped by the fixed clamp drives the swing rod to swing from top to bottom and unload by its own gravity.

[0013] A method for using a metal guardrail plate stamping forming machine specifically comprises the following steps: S1, feeding the material roll into the feeding end of the punching mechanism, the material roll is punched and cut by the punching mechanism to form a plate with holes, and the plate is discharged from the discharging end of the punching mechanism and is ready for use; S2, the hook is moved to the discharge end of the punching mechanism with the help of a driving device and aligned with the hole of the sheet to be used, and the hook is lowered with the help of a lifting and telescopic cylinder and extends into the hole to form a hook-hanging fit with the sheet; S3, the hook drags the plate along the feeding direction to move into the shaping channel to form a loading material, and the hook rises with the help of the lifting and telescopic cylinder and separates from the plate; S4, the hook continues to move in the feeding direction, and stops moving after it moves away from the shaping channel. At this time, the feeding winch and the reset winch release the rope to relax the driving rope, start the toggle clamp and open it, and the driving rope in the shaping channel is shifted to both sides and leaves the shaping channel by the toggle clamp, and then the pressing and forming mechanism is started to press and form the plate in the shaping channel to obtain a finished guardrail plate; S5, close the toggle clamp, then wind the feed winch and reset winch to tighten the drive rope again, and the hook returns to the shaping channel and hooks with the hole of the finished guardrail plate; S6. The hook pulls the finished guardrail board to move along the discharging direction. With the help of the hook, the finished guardrail board moves into the fixed claw of the unloading mechanism and is clamped and fixed. The guardrail board drives the swing rod to swing downward under its own gravity. When it swings to the lowest point, the fixed claw opens to make the finished guardrail board fall and complete the unloading.

[0014] The beneficial effects of the present invention are: A transfer mechanism is additionally provided in the present invention. Since symmetrical holes are formed on both sides of the plate after punching, the plate can be dragged to the molding bottom mold of the pressing and forming machine to form loading through the cooperation of the hook of the transfer mechanism with the holes. At the same time, since the holes at the very end of the plate are exposed to the outside of the molding channel during the loading process, after the pressing and forming is completed, the hook of the transfer mechanism cooperates with the exposed holes of the plate, and the unloading can be completed after continuing to drag and detaching from the molding bottom mold.

[0015] The guardrail panels can be quickly loaded and unloaded through hook-and-hang cooperation. The whole process does not require manual operation, thus realizing the mechanized production of metal guardrail panels and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is an enlarged structural schematic diagram of the pressing and forming mechanism and the unloading mechanism; Figure 3 It is a schematic diagram of the side structure of the pressing and forming mechanism; Figure 4 This is a schematic diagram of the coordination when the clamping claw is moved but the driving rope is not moved; Figure 5 This is a schematic diagram of the coordination when the clamping claw is moved to move the driving rope; Figure 6It is a side structural schematic diagram of the punching mechanism; Figure 7 It is a schematic diagram of the top view of the punching mechanism and the unloading mechanism; Figure 8 It is a side structural diagram of the unloading mechanism; In the attached drawings, 1, frame, 2, pressing plate, 3, shaping bottom mold, 4, hook, 5, lifting and telescopic cylinder, 6, feeding winch, 7, resetting winch, 8, driving rope, 9, toggle clamp, 10, material dividing platform, 11, moving trough, 12, feeding roller pair, 13, discharging roller pair, 14, punch seat, 15, die, 16, punching telescopic cylinder, 17, lifting seat, 18, support rod, 19, swing rod, 20, buffer spring, 21, fixed clamp, 22, cutter. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments: Specific embodiments, such as Figure 1-3 As shown, the present invention provides a metal guardrail plate stamping and forming machine, including a frame 1 and a punching mechanism, a pressing and forming mechanism and a transfer mechanism arranged on the frame 1. The material roll is punched and cut into a plate with holes by means of the punching mechanism. The pressing and forming mechanism includes a pressing plate 2 and a shaping bottom mold 3. The pressing plate 2 has the freedom to rise and fall in the vertical direction. A shaping channel is formed between the pressing plate 2 and the shaping bottom mold 3. The plate at the discharge end of the punching mechanism is moved to the shaping channel by the transfer mechanism for bending and forming. The transfer mechanism is located between the punching mechanism and the pressing and forming mechanism. The transfer mechanism includes a hook 4 and a driving device for driving the hook 4 to move. The hook 4 has the freedom to move back and forth between the punching mechanism and the pressing and forming mechanism by means of the driving device. The holes of the plate form a hook-hanging fit with the hook 4 and are loaded or unloaded by means of the reciprocating movement of the hook 4.

[0018] Since the guardrail board is long, it is heavy, and the board itself is thin. After being pressed and formed by the pressing machine, the finished guardrail board will be aligned with the finalized bottom mold 3, resulting in no suitable clamping points for the finished guardrail board during transportation, which makes it difficult to load and unload the finished guardrail board.

[0019] Therefore, a transfer mechanism is added in the present invention. Since symmetrical holes will be formed on both sides of the plate after punching, the hook 4 of the transfer mechanism cooperates with the holes, and the plate can be dragged to the molding bottom mold 3 of the press-forming machine to form the material. At the same time, since the length of the guardrail plate is as long as 3-5m, and the holes of the guardrail plate are close to the edges of both ends, during the press-forming process, even if the end of the plate is about 15cm from the molding bottom mold 3 of the molding channel and is not in the molding channel, the end of the plate will be deformed together with the middle part of the plate during the press-forming process. Therefore, during the material feeding process, the hole at the end of the plate is exposed outside the molding channel. After the press-forming is completed, the hook 4 of the transfer mechanism cooperates with the exposed hole, and the material can be formed after continuing to drag and separating from the molding bottom mold 3. The guardrail plate can be quickly loaded and unloaded by the hook-hanging cooperation. The whole process does not require manual operation, and the mechanized production of metal guardrail plates is realized, which improves work efficiency.

[0020] like Figure 1-3 As shown, the transfer mechanism is symmetrically arranged with two groups along the feeding direction of the plate, and the hooks 4 of the two groups of the transfer mechanism are respectively aligned with the holes on both sides of the plate, and the transfer mechanism is suspended above the shaping bottom mold 3 with the help of the lifting and telescopic cylinder 5. The transfer mechanism has the freedom of lifting and lowering in the vertical direction with the help of the lifting and telescopic cylinder 5. In the present invention, the hook 4 is lifted and lowered by the lifting and telescopic cylinder 5, so that the hook 4 is extended into or out of the hole, thereby completing the cooperation and separation of the hook 4 and the plate.

[0021] like Figure 2 As shown, the driving device includes a feeding winch 6 and a reset winch 7. The reset winch 7 is suspended on the feeding side of the press-forming mechanism by means of a group of lifting and telescopic cylinders 5, and the feeding winch 6 is suspended on the discharge end side of the press-forming mechanism by means of another group of lifting and telescopic cylinders 5. A driving rope 8 is arranged between the reset winch 7 and the feeding winch 6. The driving rope 8 has the freedom to move back and forth along the feeding direction of the plate by means of the rotation of the feeding winch 6 and the reset winch 7. The hook 4 is fixedly connected to the driving rope 8. The hook 4 has the freedom to move back and forth between the punching mechanism and the press-forming mechanism by means of the driving rope 8.

[0022] The present invention uses two sets of winches to make the driving rope 8 move back and forth. The hook 4 in the present invention can be a hook-shaped structure or a vertical rod-shaped structure. When the hook 4 is a hook-shaped structure, when the hook 4 is separated from the plate, it needs to move back a certain distance and then rise up to separate from the plate. When the hook 4 is a rod-shaped structure, the connection between the hook 4 and the driving rope 8 needs to be a hard connection, and the hook 4 is always in a vertical state during the movement.

[0023] like Figure 3-5As shown in the figure, the dotted frame A is a plate in the shaping channel, and a toggle clamp 9 is further provided between the two groups of the driving ropes 8, and the toggle clamp 9 is provided with a group on the feeding side and the discharging side of the pressing and forming mechanism respectively, and the toggle clamp 9 has the freedom to open and close the driving ropes 8 on both sides, and the driving rope 8 is offset and avoids the shaping channel by the toggle clamp 9. Since the driving rope 8 is located in the shaping channel during the process of the hook 4 dragging the plate to move, in order to avoid the pressing and forming mechanism pressing the driving rope 8 during the pressing process, damaging the driving rope 8 and affecting the shaping quality of the guardrail plate, it is necessary to make the driving rope 8 avoid the shaping channel. Therefore, in the present invention, a toggle clamp 9 is provided on the outside of the shaping channel, and the rope is firstly increased by releasing the rope through a winch, and then when the toggle clamp 9 is opened, the fixed ropes on both sides will be pushed apart, so that the driving rope 8 is in a rectangular shape with an enlarged area, thereby leaving the shaping channel (such as Figure 5 As shown), prevent the pressing plate 2 from pressing the drive rope 8.

[0024] like Figure 1 and Figure 7 As shown, a material distribution platform 10 is also arranged between the punching mechanism and the press-forming mechanism. A movable groove 11 is arranged on the surface of the material distribution platform 10 for the hook 4 to pass through. The movable groove 11 is arranged along the feeding direction of the plate. Since the hook 4 needs to be inserted into the hole, but the plate fits with the material distribution platform 10, a movable groove 11 is additionally arranged. When the hook is engaged, the hook 4 will pass through the plate and extend into the movable groove 11, and continue to move forward through the movable groove 11.

[0025] like Figure 1 and Figure 6-7 As shown, the punching mechanism includes a feed pair of rollers 12, a discharge pair of rollers 13, a punch seat 14 and a die 15 located between the feed pair of rollers 12 and the discharge pair of rollers 13. The punch seat 14 has the freedom to rise and fall relative to the die 15 with the help of a punching telescopic cylinder 16. The sheet material passes between the punch seat 14 and the die 15 with the help of the feed pair of rollers 12 and a hole is formed. The punching mechanism also includes a cutter 22, by which the material roll can be cut to form a sheet material of a required length.

[0026] like Figure 3 As shown, the relative surfaces of the pressing plate 2 and the molding bottom mold 3 are in matching wavy structures, and the press molding mechanism also includes a lifting seat 17. With the help of the lifting seat 17, the pressing plate 2 has the freedom to be lifted and lowered in the vertical direction. The lifting seat 17 in the present invention includes a slide rail along the vertical direction and a slider slidably matched with the slide rail. The slider has the freedom to move along the slide rail with the help of a telescopic cylinder. The slider is fixedly connected to the lifting seat 17, so that the lifting seat 17 has the freedom to be lifted and lowered.

[0027] like Figure 1-2 and Figure 8As shown, the discharge end of the press-forming mechanism is also provided with a discharge mechanism, and the discharge mechanism is provided with multiple groups at intervals along the feeding direction of the plate, and the discharge mechanism includes a support rod 18, a swing rod 19, and a buffer spring 20 located between the support rod 18 and the swing rod 19. The support rod 18 is arranged in the vertical direction and is fixedly connected to the frame 1. The hinged end of the support rod 18 is hinged to the top of the support rod 18, and the free end of the support rod 18 is provided with a fixed clamping claw 21 with a degree of freedom of opening and closing. The finished guardrail plate is transferred to the discharge mechanism by means of the transfer mechanism to form a match with the fixed clamping claw 21, and the fixed clamping claw 21 is fixed to the frame 1. The finished guardrail panels clamped by 1 drive the swing rod 19 to swing from top to bottom and unload by its own gravity. The finished guardrail panels need to be moved from high to low, so that the finished guardrail panels are transferred from the pressing and forming mechanism to the forklift for transfer. However, the transfer mechanism in the present invention can only move the guardrail panels in the horizontal direction. Therefore, a unloading mechanism is provided. The finished guardrail panels are swung from top to bottom by the swing of the swing rod 19. Due to the presence of the buffer spring 20, the swing rod 19 can be prevented from swinging too fast, which plays a buffering role. At the same time, the buffer spring 20 can also reset the swing rod 19 to unload the next group of finished guardrail panels. In addition, the fixed clamp 21 is hinged to the end of the support rod 18 to ensure that the fixed clamp 21 is always in a horizontal state under the action of gravity.

[0028] A method for using a metal guardrail plate stamping forming machine specifically comprises the following steps: S1, feeding the material roll into the feeding end of the punching mechanism, the material roll is punched and cut by the punching mechanism to form a plate with holes, and the plate is discharged from the discharging end of the punching mechanism and is ready for use; S2, the hook 4 is moved to the discharge end of the punching mechanism with the help of the driving device and aligned with the hole of the plate to be used, and the hook 4 is lowered with the help of the lifting and telescopic cylinder 5 and extends into the hole to form a hook-hanging fit with the plate; S3, the hook 4 drags the plate along the feeding direction to move into the shaping channel to form a feed, and the hook 4 rises with the help of the lifting and telescopic cylinder 5 and separates from the plate; S4, the hook 4 continues to move in the feeding direction, and stops moving after it is away from the shaping channel. At this time, the feeding winch 6 and the reset winch 7 release the rope to relax the driving rope 8, and the toggle clamp 9 is started and opened. The driving rope 8 in the shaping channel is deflected to both sides and leaves the shaping channel by the toggle clamp 9, and then the pressing and forming mechanism is started to press and form the plate in the shaping channel to obtain a finished guardrail plate; S5, close the toggle clamp 9, then wind the feeding winch 6 and the reset winch 7 to re-tighten the driving rope 8, and the hook 4 returns to the shaping channel and hooks with the holes of the finished guardrail plate; S6, the hook 4 pulls the finished guardrail board to move along the discharge direction. With the help of the hook 4, the finished guardrail board is moved into the fixed claw 21 of the unloading mechanism and is clamped and fixed. The guardrail board drives the swing rod 19 to swing downward under its own gravity. When it swings to the lowest point, the fixed claw 21 is opened to make the finished guardrail board fall and complete the unloading.

[0029] In step S1, after the sheet is discharged from the discharge end of the punching mechanism, it will stay on the material distribution platform 10. When the hook 4 drags the sheet from the material distribution platform 10 to the pressing and forming mechanism, the next group of sheets will be punched and cut. When the hook 4 is feeding the plate, the reset winch 7 reverses and releases the rope, and the feeding winch 6 rotates forward and retracts the rope, thereby realizing the forward movement of the hook 4; when the hook 4 is reset, the reset winch 7 rotates forward and retracts the rope, and the feeding winch 6 reverses and releases the rope, thereby realizing the reverse movement of the hook 4.

Claims

1. A metal guardrail plate stamping and forming machine, comprising a frame (1) and a punching mechanism, a pressing and forming mechanism and a transfer mechanism arranged on the frame (1); a material roll is punched and cut into a plate with holes by means of the punching mechanism; the pressing and forming mechanism comprises a pressing plate (2) and a shaping bottom die (3); the pressing plate (2) has the freedom to rise and fall in the vertical direction; a shaping channel is formed between the pressing plate (2) and the shaping bottom die (3); the plate at the discharge end of the punching mechanism is moved into the shaping channel by means of the transfer mechanism for bending and forming, and is characterized in that: The transfer mechanism is located between the punching mechanism and the press-forming mechanism, and comprises a hook (4) and a driving device for driving the hook (4) to move. The hook (4) has the freedom to move back and forth between the punching mechanism and the press-forming mechanism with the aid of the driving device. The holes of the plate and the hook (4) form a hook-and-hook fit, and the reciprocating movement of the hook (4) forms loading or unloading.

2. A metal guardrail plate stamping machine according to claim 1, characterized in that: The transfer mechanism is provided with two groups symmetrically along the feeding direction of the plate, and the hooks (4) of the two groups of the transfer mechanism are respectively aligned with the holes on both sides of the plate. The transfer mechanism is suspended above the shaping bottom mold (3) by means of a lifting and telescopic cylinder (5), and the transfer mechanism has the freedom to rise and fall in the vertical direction by means of the lifting and telescopic cylinder (5).

3. A metal guardrail plate stamping machine according to claim 2, characterized in that: The driving device comprises a feeding winch (6) and a reset winch (7); the reset winch (7) is suspended on the feeding side of the press-forming mechanism by means of a group of lifting and telescopic cylinders (5); the feeding winch (6) is suspended on the discharging end side of the press-forming mechanism by means of another group of lifting and telescopic cylinders (5); a driving rope (8) is arranged between the reset winch (7) and the feeding winch (6); the driving rope (8) has the freedom to move back and forth along the sheet feeding direction by means of the rotation of the feeding winch (6) and the reset winch (7); the hook (4) is fixedly connected to the driving rope (8); the hook (4) has the freedom to move back and forth between the punching mechanism and the press-forming mechanism by means of the driving rope (8).

4. A metal guardrail plate stamping forming machine according to claim 3, characterized in that: A toggle clamp (9) is also provided between the two groups of driving ropes. One group of the toggle clamp (9) is provided on the feeding side and the discharging side of the pressing and forming mechanism. The toggle clamp (9) has the freedom to open and close toward the driving ropes (8) on both sides. The driving rope (8) is deflected and avoids the shaping channel by means of the toggle clamp (9).

5. The metal guardrail plate stamping forming machine according to claim 1, characterized in that: A material distribution platform (10) is also provided between the punching mechanism and the pressing and forming mechanism, and a movable groove (11) for the hook (4) to pass through is provided on the surface of the material distribution platform (10), and the movable groove (11) is provided along the sheet material feeding direction.

6. A metal guardrail plate stamping forming machine according to claim 1, characterized in that: The punching mechanism comprises a pair of feed rollers (12), a pair of discharge rollers (13), a punch seat (14) and a die (15) located between the pair of feed rollers (12) and the pair of discharge rollers (13); the punch seat (14) has the freedom to rise and fall relative to the die (15) by means of a punching telescopic cylinder (16); the sheet material passes between the punch seat (14) and the die (15) by means of the pair of feed rollers (12) and a punch hole is formed.

7. A metal guardrail plate stamping machine according to claim 1, characterized in that: The opposing surfaces of the pressing plate (2) and the shaping bottom mold (3) present mutually matching wavy structures, and the pressing and forming mechanism further comprises a lifting seat (17), and the pressing plate (2) has the freedom to be lifted and lowered in a vertical direction by means of the lifting seat (17).

8. The metal guardrail plate stamping forming machine according to claim 4, characterized in that: The discharge end of the press-forming mechanism is also provided with a discharge mechanism, wherein a plurality of discharge mechanisms are arranged at intervals along the sheet feeding direction, and the discharge mechanism comprises a support rod (18), a swing rod (19), and a buffer spring (20) located between the support rod (18) and the swing rod (19). The support rod (18) is arranged in a vertical direction and is fixedly connected to the frame (1). The hinged end of the support rod (18) is hinged to the top of the support rod (18), and the free end of the support rod (18) is provided with a fixed clamping claw (21) with the freedom of opening and closing. The finished guardrail plate is transferred to the discharge mechanism with the help of the transfer mechanism to form a match with the fixed clamping claw (21). The finished guardrail plate clamped by the fixed clamping claw (21) drives the swinging rod (19) to swing from top to bottom and discharge with the help of its own gravity.

9. A method for using a metal guardrail plate stamping machine according to claim 8, characterized in that: The method of use specifically comprises the following steps: S1, feeding the material roll into the feeding end of the punching mechanism, the material roll is punched and cut by the punching mechanism to form a plate with holes, and the plate is discharged from the discharging end of the punching mechanism and is ready for use; S2, the hook (4) is moved to the discharge end of the punching mechanism with the aid of a driving device and aligned with the hole of the sheet to be used, and the hook (4) is lowered with the aid of a lifting and telescopic cylinder (5) and extends into the hole to form a hook-hanging fit with the sheet; S3, the hook (4) drags the plate along the feeding direction to move into the shaping channel to form a loading material, and the hook (4) rises with the help of the lifting and telescopic cylinder (5) and separates from the plate; S4, the hook (4) continues to move in the feeding direction and stops moving after moving away from the shaping channel. At this time, the feeding winch (6) and the reset winch (7) release the ropes to relax the driving rope (8), and the toggle clamp (9) is started and opened. The driving rope (8) in the shaping channel is deflected to both sides and leaves the shaping channel by the toggle clamp (9), and then the pressing and forming mechanism is started to press and form the plate in the shaping channel to obtain a finished guardrail plate; S5, the toggle clamp (9) is closed, and then the feeding winch (6) and the reset winch (7) are wound to re-tighten the driving rope (8), and the hook (4) is returned to the shaping channel and hooked with the hole of the finished guardrail plate; S6, the hook (4) pulls the finished guardrail plate to move in the discharge direction, and the finished guardrail plate is moved into the fixed clamping claw (21) of the discharge mechanism with the help of the hook (4) and is clamped and fixed. The guardrail plate drives the swinging rod (19) to swing downward under its own weight. When it swings to the lowest point, the fixed clamping claw (21) is opened to allow the finished guardrail plate to fall and the discharge is completed.

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