Guardrail forming machine

Abstract

The utility model relates to the technical field of guardrail forming, in particular to a guardrail forming machine which comprises a fixing seat, a preheating conveying table and a die casting table are sequentially arranged on the upper surface of the fixing seat from left to right, a connecting and guiding assembly is arranged at the right end of the fixing seat, and the tail end of a rotating shaft of a conveying roller close to the left end is coaxially connected with a motor. An upper heating plate is arranged in the upper clamping groove; according to the guardrail forming machine, the preheating conveying table and the die-casting table are conveniently combined and installed through the fixing base, the supporting frame and the second electric push rod are installed on the preheating conveying table, a movable plate can conveniently move up and down, a passing guardrail plate is preheated under the cooperation of an upper heating plate and a lower heating plate, and a lower die roller at the left end of the die-casting table is matched with an upper die roller; through the combination of a pressing ring and a die groove, the guardrail plates are pressed, formed and matched, under the cooperation of a second hydraulic cylinder and a fodder chopper, the guardrail plates formed through die casting are matched in a segmented mode, and finally the formed guardrail plates are collected and matched in a centralized mode through a connecting and guiding assembly.

Description

Technical Field

[0001] This utility model relates to the field of guardrail forming technology, specifically a guardrail forming machine. Background Technology

[0002] Road guardrails are a type of facility used to protect roads and road users. They are typically used to restrict vehicle traffic areas, prevent traffic accidents, and improve road safety.

[0003] The utility model patent with announcement number CN219443222U discloses a forming machine for processing guardrails in road construction, including a base, a guardrail processing table fixedly connected to the top of the base, columns fixedly connected to both sides of the top of the base, a top plate fixedly connected to the top of the columns, a hydraulic cylinder fixedly connected to the bottom of the top plate, an upper mold fixedly connected to the output end of the hydraulic cylinder, a lower mold installed on the top of the guardrail processing table, and support columns fixedly connected to the four corners of the top of the guardrail processing table.

[0004] The above-mentioned technical solution uses a protective net to protect the perimeter of the stamping area. When breakage and debris flying during stamping occur, the protective net can prevent flying debris from injuring workers. The protective net is elastic and expandable, and the height of the protection can be adjusted by moving the adjustment rod, thus achieving the function of preventing debris from flying and improving the safety of processing. However, the guardrail is made of steel plate by die casting. It is not convenient to preheat before die casting to reduce the impact of guardrail plate cracking on long-term use. Moreover, it is not convenient to quickly cut and stably discharge the guardrail plate after it is formed. Utility Model Content

[0005] The purpose of this invention is to provide a guardrail forming machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A guardrail forming machine includes a fixed base. From left to right, a preheating conveyor table and a die-casting table are arranged on the upper surface of the fixed base. A receiving assembly is located at the right end of the fixed base. An installation groove is formed on the upper surface of the fixed base. The preheating conveyor table is installed at the left end of the installation groove. Arc-shaped grooves are formed near both ends of the upper surface of the preheating conveyor table, and conveying rollers are installed in each arc-shaped groove. A motor is coaxially connected to the end of the rotating shaft of the conveying roller near the left end. A lower locking groove is formed in the middle of the preheating conveyor table, and a lower heating plate is installed in the lower locking groove. A support frame is provided above the preheating conveyor table. A second electric push rod is provided at the top of the support frame. A movable plate is provided at the end of the telescopic arm of the second electric push rod. An upper locking groove is formed on the lower surface of the movable plate, and an upper heating plate is installed in the upper locking groove.

[0008] A groove is provided on the upper surface of the die-casting platform near the left end. A lower die roller is provided in the groove. A mold groove is symmetrically provided on the outer wall of the lower die roller. A positioning frame is provided above the die-casting platform near the left end. A first hydraulic cylinder is symmetrically provided on the top of the positioning frame. A connecting plate is provided between the ends of the telescopic arms of the first hydraulic cylinder. An upper die roller is provided at the bottom of the connecting plate. A pressure ring is provided on the outer wall of the upper die roller at the position corresponding to the mold groove.

[0009] A second U-shaped frame is provided on the upper surface of the die-casting platform near the right end. A second hydraulic cylinder is provided on the top of the second U-shaped frame. A guillotine is provided at the end of the telescopic wall of the second hydraulic cylinder. A guillotine groove is provided on the upper surface of the die-casting platform corresponding to the guillotine.

[0010] Furthermore, the width of the inner wall of the mounting groove is adapted to the width of the outer wall of the preheating conveyor table and the die-casting table, and support columns are provided on the lower surface of the fixed seat near the four corners.

[0011] In this invention, the cooperation of four support columns helps to lift the whole structure and increase the stability of the whole structure when placed independently. In addition, the cooperation of the mounting groove enables the stable insertion and installation of the preheating conveyor table and the die-casting table.

[0012] Specifically, the motor is fixedly connected to the preheating conveyor table by screws, the output shaft of the motor is coaxially connected to the rotating shaft of one of the conveying rollers, and the outer wall of each conveying roller is fitted with an anti-slip sleeve.

[0013] In this invention, the motor is connected to an external power source via a wire, and the control switch on the outer wall of the motor is activated, causing the output shaft to rotate and drive the left conveyor roller to rotate continuously. With the cooperation of the anti-slip sleeve, the friction with the guardrail is increased, which helps to continuously guide and convey the roller.

[0014] Secondly, a first U-shaped frame is provided on the upper surface of the preheating conveyor platform near the left end. A first electric push rod is provided on the top of the first U-shaped frame. The telescopic arm of the first electric push rod passes through the first U-shaped frame and is provided with a clamping plate at its end. A rotatable pressing roller is provided at the bottom of the clamping plate.

[0015] In this invention, the first electric push rod is electrically connected to an external power source via a wire. When the control switch on the outer wall is activated, the telescopic arm of the first electric push rod extends or retracts, thereby moving the clamping plate up and down. In conjunction with the pressing roller, it presses and conveys the guardrail plate passing above the conveying roller, increasing the contact friction and stabilizing the conveying process.

[0016] It should be noted that the support frame has a U-shaped structure, the bottom of the support frame is fixedly connected to the top of the preheating conveyor table by screws, the second electric push rod is fixedly connected to the support frame by screws, and the telescopic wall end of the second electric push rod is fixedly connected to the top of the movable plate by screws.

[0017] In this invention, the second electric push rod is electrically connected to an external power source via a wire. When the control switch on the outer wall is activated, the telescopic arm extends or retracts to move the movable plate up and down. The width of the outer wall of the movable plate is adapted to the width between the inner wall of the support frame and the width between the outer wall of the movable plate and the inner wall of the preheating conveyor. The distance between the movable plate and the preheating conveyor is reduced, thereby reducing the space in the middle of the preheating conveyor, which helps to reduce the space when conveying the guardrail and facilitates the preheating of the guardrail.

[0018] Furthermore, the upper surface of the movable plate is provided with sliding rods near the corners, and the support frame is provided with sliding holes corresponding to the sliding rods. The upper heating plate is fixedly connected to the bottom of the upper slot by screws, and the lower heating plate is fixedly connected to the lower slot by screws. Both the lower heating plate and the upper heating plate are electrically connected to an external power source through wires.

[0019] In this invention, the sliding rod and the sliding hole slide together to enable the movable plate to move stably up and down on the support frame. The upper heating plate and the lower heating plate work together to preheat the guardrail plate that passes through the middle. This helps to preheat before die casting, reduce the impact of cracking damage caused by low temperature die casting of the guardrail plate, and improve toughness and plasticity after preheating.

[0020] It is worth noting that the lower mold roller is rotatably connected to the die-casting table, the positioning frame has a U-shaped structure, and the bottom of the positioning frame is welded and fixed to the top of the die-casting table. The first hydraulic cylinder is fixedly connected to the positioning frame by screws. The connecting plate is slidably engaged with the positioning frame, and the upper mold roller is rotatably connected to the connecting plate. The width of the outer wall of the pressure ring is adapted to the width of the inner wall of the mold groove.

[0021] In this utility model, the positioning frame provides an installation force point, which facilitates the installation and cooperation of the first hydraulic cylinder. With the cooperation of the connecting plate, the first hydraulic cylinder is electrically connected to an external power source through a wire to control the flow of internal hydraulic oil, thereby extending or shortening the telescopic arm, and adjusting the up and down movement of the connecting plate. The upper mold roller moves down and gets closer to the lower mold roller, and the pressure ring is inserted into the mold groove to perform die casting and cooperation on the guardrail plate that passes through the middle.

[0022] Furthermore, the bottom of the second U-shaped frame is fixedly connected to the top of the die-casting table by screws, the second hydraulic cylinder is fixedly connected to the second U-shaped frame by screws, the end of the telescopic arm of the second hydraulic cylinder is fixedly connected to the guillotine by screws, and the bottom of the guillotine is inserted into the blade groove.

[0023] In this invention, the second hydraulic cylinder is fixed on the second U-shaped frame and electrically connected to an external power source via a wire. The telescopic arm extends or retracts to move the guillotine up and down. The guillotine is inserted into the blade groove to cut the guardrail above the blade groove, which helps to collect the guardrail in sections.

[0024] Specifically, the receiving assembly includes a tray and side plates symmetrically connected to the left end of the tray. Each tray has a column near the corner at its bottom. The left end of each side plate is fixedly connected to the right end of the die-casting table by screws. Several guide rollers are provided between the side plates. The guide rollers are evenly spaced and are rotatably connected to the side plates.

[0025] In this invention, the support column lifts the support plate, and multiple guide rollers are used between the two side plates to achieve stable receiving and discharge of the segmented die-cast guardrail panels, making it convenient to collect the die-cast guardrail panels in a centralized manner.

[0026] Compared with the prior art, the beneficial effects of this utility model are:

[0027] 1. This utility model facilitates the assembly and installation of the preheating conveyor table and the die-casting table by setting a fixed base. The preheating conveyor table is equipped with a support frame and a second electric push rod, which facilitates the up and down movement of the movable plate. With the cooperation of the upper heating plate and the lower heating plate, the guardrail plate is preheated, increasing the toughness and plasticity of the guardrail plate. With the cooperation of the lower mold roller and the upper mold roller on the left end of the die-casting table, the guardrail plate is pressed and formed by the combination of the pressure ring and the mold groove. With the cooperation of the second hydraulic cylinder and the cutter, the die-cast guardrail plate is segmented and assembled. Finally, the assembled guardrail plate is collected and assembled by the receiving component.

[0028] 2. This utility model uses two conveying rollers with anti-slip sleeves, which are powered by a motor to continuously convey the guardrail panels that need to be die-cast. With the cooperation of the first U-shaped frame and the first electric push rod, the pressing roller and the conveying roller are brought closer together to increase the friction between the conveying roller and the guardrail panel, which facilitates the continuous pushing of the guardrail panel for die-casting. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0030] Figure 2 This is a schematic diagram of the guardrail forming process of this utility model;

[0031] Figure 3 This is a schematic diagram of the combined structure of the fixed base and the preheating conveyor table of this utility model;

[0032] Figure 4 This is a schematic diagram of the preheating conveyor frame structure of this utility model;

[0033] Figure 5 This is a schematic diagram of the support frame structure of this utility model;

[0034] Figure 6 This is a schematic diagram of the die-casting platform frame structure of this utility model;

[0035] Figure 7 A schematic diagram of the receiving component structure of this utility model;

[0036] Figure 8 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0037] The meanings of the labels in the diagram are as follows:

[0038] 1. Fixing base; 10. Mounting slot; 11. Support column;

[0039] 2. Preheating conveyor table; 20. Arc-shaped groove; 21. Conveyor roller; 210. Anti-slip sleeve; 211. Motor; 22. First U-shaped frame; 220. Clamping plate; 221. Pressing roller; 222. First electric push rod; 23. Support frame; 230. Second electric push rod; 231. Movable plate; 232. Upper slot; 233. Upper heating plate; 234. Slide rod; 235. Slide hole; 24. Lower slot; 240. Lower heating plate;

[0040] 3. Die-casting table; 30. Groove; 300. Die-casting tank; 301. Knife edge groove; 31. Lower die roller; 310. Die groove; 32. Positioning frame; 320. First hydraulic cylinder; 321. Connecting plate; 322. Upper die roller; 323. Pressure ring; 34. Second U-shaped frame; 340. Second hydraulic cylinder; 341. Guillotine;

[0041] 4. Receiving assembly; 40. Pallet; 400. Column; 41. Side plate; 410. Guide roller. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] Please see Figures 1-8 This embodiment provides the following technical solution:

[0044] The guardrail forming machine includes a fixed base 1. From left to right, a preheating conveyor table 2 and a die-casting table 3 are arranged on the upper surface of the fixed base 1. A receiving assembly 4 is provided at the right end of the fixed base 1. The receiving assembly 4 includes a support plate 40 and side plates 41 symmetrically connected to the left end of the support plate 40. A column 400 is provided at the bottom of the support plate 40 near the corner. The left end of the side plates 41 is fixedly connected to the right end of the die-casting table 3 by screws. Several guide rollers 410 are provided between the side plates 41. The guide rollers 410 are evenly distributed and are rotatably connected to the side plates 41.

[0045] In this utility model, the column 400 supports the support plate 40, and multiple guide rollers 410 are used between the two side plates 41 to achieve stable connection and discharge of the segmented die-cast guardrail panels, which facilitates centralized collection of the die-cast guardrail panels.

[0046] Furthermore, the upper surface of the fixed base 1 is provided with an installation groove 10, and the preheating conveyor 2 is installed at the left end of the installation groove 10. The width of the inner wall of the installation groove 10 is adapted to the width of the outer wall of the preheating conveyor 2 and the die-casting table 3, and the lower surface of the fixed base 1 is provided with support columns 11 near the four corners.

[0047] In this utility model, the cooperation of the four support columns 11 helps to support the whole and increase the stability of the whole when placed independently. In addition, the cooperation of the mounting groove 10 enables the stable insertion and installation of the preheating conveyor table 2 and the die-casting table 3.

[0048] Specifically, the upper surface of the preheating conveyor table 2 is provided with arc-shaped grooves 20 near both ends, and each arc-shaped groove 20 is provided with a conveying roller 21. The end of the rotating shaft of the conveying roller 21 near the left end is coaxially connected to a motor 211. The motor 211 is fixedly connected to the preheating conveyor table 2 by screws. The output shaft of the motor 211 is coaxially connected to the rotating shaft of one of the conveying rollers 21. Each conveying roller 21 is fitted with an anti-slip sleeve 210 on its outer wall.

[0049] In this utility model, the motor 211 is connected to an external power source through a wire. The control switch on the outer wall of the motor 211 is activated, which enables the output shaft to rotate and drive the left conveyor roller 21 to rotate continuously. With the cooperation of the anti-slip sleeve 210, the friction with the guardrail is increased, which helps to continuously guide and convey the roller.

[0050] It should be noted that a first U-shaped frame 22 is provided on the upper surface of the preheating conveyor 2 near the left end. A first electric push rod 222 is provided on the top of the first U-shaped frame 22. The telescopic arm of the first electric push rod 222 passes through the first U-shaped frame 22 and is provided with a clamping plate 220 at the end. A rotatable pressing roller 221 is provided at the bottom of the clamping plate 220.

[0051] In this utility model, the first electric push rod 222 is electrically connected to an external power source through a wire. When the control switch on the outer wall is activated, the telescopic arm of the first electric push rod 222 extends or retracts, thereby moving the clamping plate 220 up and down. With the cooperation of the pressing roller 221, it presses and conveys the guardrail plate passing above the conveying roller 21, increasing the contact friction and stabilizing the conveying.

[0052] Furthermore, a lower slot 24 is provided in the middle of the preheating conveyor table 2, and a lower heating plate 240 is provided in the lower slot 24. A support frame 23 is provided above the preheating conveyor table 2, and a second electric push rod 230 is provided at the top of the support frame 23. A movable plate 231 is provided at the end of the telescopic arm of the second electric push rod 230. The support frame 23 has a U-shaped structure. The bottom of the support frame 23 is fixedly connected to the top of the preheating conveyor table 2 by screws. The second electric push rod 230 is fixedly connected to the support frame 23 by screws, and the end of the telescopic wall of the second electric push rod 230 is fixedly connected to the top of the movable plate 231 by screws.

[0053] In this utility model, the second electric push rod 230 is electrically connected to an external power source through a wire. When the control switch on the outer wall is activated, the telescopic arm extends or retracts to move the movable plate 231 up and down. The width of the outer wall of the movable plate 231 is adapted to the width between the inner wall of the support frame 23 and the inner wall of the preheating conveyor 2. The distance between the movable plate 231 and the preheating conveyor 2 is reduced, thereby reducing the space in the middle of the preheating conveyor 2. This helps to reduce the space when conveying the guardrail and facilitates the preheating of the guardrail.

[0054] It is worth noting that the lower surface of the movable plate 231 is provided with an upper slot 232, and an upper heating plate 233 is provided in the upper slot 232; a sliding rod 234 is provided on the upper surface of the movable plate 231 near the corner, and a sliding hole 235 is provided on the support frame 23 corresponding to the sliding rod 234; the upper heating plate 233 is fixedly connected to the bottom of the upper slot 232 by screws, and the lower heating plate 240 is fixedly connected to the lower slot 24 by screws; and both the lower heating plate 240 and the upper heating plate 233 are electrically connected to an external power source through wires.

[0055] In this utility model, the sliding rod 234 and the sliding hole 235 are slidably engaged, so that the movable plate 231 can move stably up and down on the support frame 23. With the cooperation of the upper heating plate 233 and the lower heating plate 240, the guardrail plate passing through the middle is preheated, which helps to preheat before die casting, reduce the impact of cracking damage caused by low temperature die casting of the guardrail plate, and improve toughness and plasticity after preheating.

[0056] Furthermore, a groove 30 is provided on the upper surface of the die-casting table 3 near the left end, and a lower die roller 31 is provided in the groove 30. A mold groove 310 is symmetrically provided on the outer wall of the lower die roller 31. A positioning frame 32 is provided on the upper part of the die-casting table 3 near the left end. A first hydraulic cylinder 320 is symmetrically provided on the top of the positioning frame 32. A connecting plate 321 is provided between the ends of the telescopic arms of the first hydraulic cylinder 320. An upper die roller 322 is provided at the bottom of the connecting plate 321. A pressure ring 323 is provided on the outer wall of the upper die roller 322 at the position corresponding to the mold groove 310.

[0057] Secondly, the lower mold roller 31 is rotatably connected to the die-casting table 3, the positioning frame 32 has a U-shaped structure, and the bottom of the positioning frame 32 is welded and fixed to the top of the die-casting table 3. The first hydraulic cylinder 320 is fixedly connected to the positioning frame 32 by screws. The connecting plate 321 is slidably engaged with the positioning frame 32, and the upper mold roller 322 is rotatably connected to the connecting plate 321. The width of the outer wall of the pressure ring 323 is adapted to the width of the inner wall of the mold groove 310.

[0058] In this utility model, the positioning frame 32 provides an installation force point, which facilitates the installation and cooperation of the first hydraulic cylinder 320. With the cooperation of the connecting plate 321, the first hydraulic cylinder 320 is electrically connected to an external power source through a wire to control the flow of internal hydraulic oil, thereby extending or shortening the telescopic arm. This, in turn, adjusts the up-and-down movement of the connecting plate 321, causing the upper mold roller 322 to move down and approach the lower mold roller 31. The pressure ring 323 is inserted into the mold groove 310 to perform die-casting and cooperation on the guardrail plate that passes through the middle.

[0059] Specifically, a second U-shaped frame 34 is provided on the upper surface of the die-casting table 3 near the right end. A second hydraulic cylinder 340 is provided on the top of the second U-shaped frame 34. A guillotine 341 is provided at the end of the telescopic wall of the second hydraulic cylinder 340. A blade groove 301 is provided on the upper surface of the die-casting table 3 at the position corresponding to the guillotine 341.

[0060] In addition, the bottom of the second U-shaped frame 34 is fixedly connected to the top of the die-casting table 3 by screws, the second hydraulic cylinder 340 is fixedly connected to the second U-shaped frame 34 by screws, the end of the telescopic arm of the second hydraulic cylinder 340 is fixedly connected to the guillotine 341 by screws, and the bottom of the guillotine 341 is inserted into the blade groove 301.

[0061] In this utility model, the second hydraulic cylinder 340 is fixed on the second U-shaped frame 34 and electrically connected to an external power source through a wire. The telescopic arm extends or shortens to move the guillotine 341 up and down. The guillotine 341 is inserted into the blade groove 301 to cut the guardrail plate passing above the blade groove 301, which helps to collect the guardrail in sections.

[0062] When using the guardrail forming machine of this embodiment, firstly, the preheating conveyor table 2 and the die-casting table 3 are installed in the mounting groove 10 with the support column 11. Then, the first U-shaped frame 22 with the first electric push rod 222 is fixed on the preheating conveyor table 2, and the pressing roller 221 corresponds to the conveying roller 21 with the anti-slip sleeve 210 on the left side. The motor 211 is fixed on the outer wall of the left side of the preheating conveyor table 2. Then, the support frame 23 with the second electric push rod 230 is fixed above the preheating conveyor table 2. The upper heating plate 233 is fixed in the upper slot 232, the lower heating plate 240 is fixed in the lower slot 24, the positioning frame 32 with the first hydraulic cylinder 320 is fixed on the die-casting table 3, and the upper mold roller 322 with the pressure ring 323 corresponds to the lower mold roller 31 with the mold groove 310. Then, the second U-shaped frame 34 with the second hydraulic cylinder 340 is fixed on the die-casting table 3, and the guillotine 341 corresponds to the blade groove 301.

[0063] The guardrail panel to be processed is passed between the pressing roller 221 and the conveying roller 21. Depending on the thickness of the guardrail panel, the extension or retraction of the first electric push rod 222 is controlled to achieve contact between the pressing roller 221 and the guardrail panel, increasing friction. The upper heating plate 233 and the lower heating plate 240 are powered on to continuously preheat the guardrail panel passing through. The heated guardrail panel enters between the upper die roller 322 and the lower die roller 31, where it undergoes die casting under the cooperation of the pressure ring 323 and the mold groove 310. In conjunction with the continuous conveying of the conveyor roller 21, the formed guardrail panel is conveyed to the die-casting tank 300. With the insertion and cooperation of the cutter 341 and the cutting groove 301, the formed guardrail panel is cut. Finally, with the cooperation of multiple guide rollers 410 and side plates 41, the segmented guardrail panels are received, which helps to collect and assemble them. The overall assembly and installation are convenient. Under the effect of preheating, the toughness and plasticity of the guardrail panel are increased, which helps to facilitate die-casting and reduces the impact of cracking caused by cold casting on continuous interception and protection.

Claims

1. A guardrail forming machine, comprising a fixed base (1), characterized in that: The upper surface of the fixed base (1) is provided with a preheating conveyor platform (2) and a die-casting platform (3) from left to right. A receiving assembly (4) is provided at the right end of the fixed base (1). An installation groove (10) is provided on the upper surface of the fixed base (1). The preheating conveyor platform (2) is installed at the left end of the installation groove (10). An arc-shaped groove (20) is provided on the upper surface of the preheating conveyor platform (2) near both ends. A conveying roller (21) is provided in each of the arc-shaped grooves (20). The end of the shaft of the conveying roller (21) near the left end is coaxially connected to an electric motor. The machine (211) has a lower slot (24) in the middle of the preheating conveyor (2), and a lower heating plate (240) is provided in the lower slot (24). A support frame (23) is provided above the preheating conveyor (2). A second electric push rod (230) is provided at the top of the support frame (23). A movable plate (231) is provided at the end of the telescopic arm of the second electric push rod (230). An upper slot (232) is provided on the lower surface of the movable plate (231). An upper heating plate (233) is provided in the upper slot (232). A groove (30) is provided on the upper surface of the die casting table (3) near the left end. A lower die roller (31) is provided in the groove (30). A mold groove (310) is symmetrically provided on the outer wall of the lower die roller (31). A positioning frame (32) is provided above the die casting table (3) near the left end. A first hydraulic cylinder (320) is symmetrically provided on the top of the positioning frame (32). A connecting plate (321) is provided between the ends of the telescopic arms of the first hydraulic cylinder (320). An upper die roller (322) is provided at the bottom of the connecting plate (321). A pressure ring (323) is provided on the outer wall of the upper die roller (322) corresponding to the mold groove (310). A second U-shaped frame (34) is provided on the upper surface of the die-casting table (3) near the right end. A second hydraulic cylinder (340) is provided on the top of the second U-shaped frame (34). A guillotine (341) is provided at the end of the telescopic wall of the second hydraulic cylinder (340). A knife groove (301) is provided on the upper surface of the die-casting table (3) corresponding to the guillotine (341).

2. The guardrail forming machine according to claim 1, characterized in that: The width of the inner wall of the mounting groove (10) is adapted to the width of the outer wall of the preheating conveyor (2) and the die casting table (3), and the lower surface of the fixed seat (1) is provided with support columns (11) near the four corners.

3. The guardrail forming machine according to claim 1, characterized in that: The motor (211) is fixedly connected to the preheating conveyor (2) by screws. The output shaft of the motor (211) is coaxially connected to the rotating shaft of one of the conveying rollers (21). Anti-slip sleeves (210) are fitted on the outer wall of each conveying roller (21).

4. The guardrail forming machine according to claim 1, characterized in that: The preheating conveyor (2) has a first U-shaped frame (22) near the left end on its upper surface. The first U-shaped frame (22) has a first electric push rod (222) at its top. The telescopic arm of the first electric push rod (222) passes through the first U-shaped frame (22) and has a clamping plate (220) at its end. The clamping plate (220) has a rotatable pressing roller (221) at its bottom.

5. The guardrail forming machine according to claim 1, characterized in that: The support frame (23) has a U-shaped structure. The bottom of the support frame (23) is fixedly connected to the top of the preheating conveyor (2) by screws. The second electric push rod (230) is fixedly connected to the support frame (23) by screws, and the telescopic wall end of the second electric push rod (230) is fixedly connected to the top of the movable plate (231) by screws.

6. The guardrail forming machine according to claim 5, characterized in that: The upper surface of the movable plate (231) is provided with a sliding rod (234) near the corner. The support frame (23) is provided with a sliding hole (235) corresponding to the sliding rod (234). The upper heating plate (233) is fixedly connected to the bottom of the upper slot (232) by screws. The lower heating plate (240) is fixedly connected to the lower slot (24) by screws. The lower heating plate (240) and the upper heating plate (233) are both electrically connected to an external power source through wires.

7. The guardrail forming machine according to claim 1, characterized in that: The lower die roller (31) is rotatably connected to the die casting table (3). The positioning frame (32) has a U-shaped structure, and the bottom of the positioning frame (32) is welded and fixed to the top of the die casting table (3). The first hydraulic cylinder (320) is fixedly connected to the positioning frame (32) by screws. The connecting plate (321) is slidably engaged with the positioning frame (32). The upper die roller (322) is rotatably connected to the connecting plate (321). The width of the outer wall of the pressure ring (323) is adapted to the width of the inner wall of the mold groove (310).

8. The guardrail forming machine according to claim 1, characterized in that: The bottom of the second U-shaped frame (34) is fixedly connected to the top of the die-casting table (3) by screws. The second hydraulic cylinder (340) is fixedly connected to the second U-shaped frame (34) by screws. The end of the telescopic arm of the second hydraulic cylinder (340) is fixedly connected to the guillotine (341) by screws. The bottom of the guillotine (341) is inserted into the blade groove (301).

9. The guardrail forming machine according to claim 1, characterized in that: The receiving assembly (4) includes a tray (40) and side plates (41) symmetrically connected to the left end of the tray (40). Each tray (40) has a column (400) near the corner at the bottom. The left end of each side plate (41) is fixedly connected to the right end of the die-casting table (3) by screws. Several guide rollers (410) are provided between the side plates (41). The guide rollers (410) are evenly distributed and are rotatably connected to the side plates (41).

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