A kind of automobile aluminum alloy bumper profile bending device

Abstract

The application discloses an automobile aluminum alloy bumper profile bending device, and relates to the technical field of bumper bending, which comprises a workbench, the upper side of the workbench is fixedly connected with a guide rail, the inner side of the guide rail is slidably connected with a guide block, the upper side of the guide block is fixedly connected with a moving plate, the upper side of the moving plate is fixedly connected with a pressing die, the right side of the workbench is fixedly connected with a side plate, and the outer side of the side plate is fixedly connected with a hydraulic cylinder for driving the moving of the pressing die. The automobile aluminum alloy bumper profile bending device is provided with the workbench, the pressing die and the recessed die, so that the aluminum alloy profile can be bent conveniently. Before bending, the electric push rod one is controlled to control the vertical placement of the two horizontal plates, the cleaning brush is controlled to be lowered and contacted with the profile, then the cleaning brush is controlled to clean the impurities and debris on the surface of the profile, so that the next bending is not affected.

Description

Technical Field

[0001] This invention relates to the field of bumper bending technology, specifically to a bending device for aluminum alloy bumper profiles used in automobiles. Background Technology

[0002] Car bumper profiles typically refer to extruded aluminum alloy profiles (in some cases, high-strength plastic profiles) used in the manufacture of car bumper systems. It is the frame or anti-collision beam of the bumper, not the plastic outer shell we usually see.

[0003] A search revealed a Chinese patent with application number "CN201910674498.2", which specifically describes a forming mold for an S-shaped aluminum alloy profile bumper for automobiles. The mold includes a main table, a primary forming fixed plate, a forming mechanism, a forming auxiliary mechanism, and a product clamping mechanism. The main table is located above a bending worktable. The primary forming fixed plate is fixedly installed on the main table. The forming mechanism includes a first hydraulic cylinder, a first forming plate base, and a primary forming correction block. The first hydraulic cylinder is fixed on the main table, and its piston rod is connected to the first forming plate base. The primary forming correction block is assembled on the first forming plate base, and secondary forming plates are symmetrically arranged on both sides of the primary forming correction block. The forming auxiliary mechanism includes a second hydraulic cylinder and a second forming plate base. The second hydraulic cylinder is fixed on the second forming plate base, and its piston rod is connected to the primary forming fixed plate. Secondary forming correction blocks are symmetrically arranged on both sides of the second forming plate base.

[0004] In the current aluminum alloy bumper profile bending process, after extrusion, cutting, and punching, the surface of the profile often retains impurities such as aluminum shavings, oxide scale, oil stains, and dust. If the profile surface is not effectively cleaned before bending, these impurities will enter the mold along with the profile, embedding into the mold surface or adhering to the working surfaces of the guide block or forming plate under high pressure. Residual impurities will not only scratch the surface of subsequent profiles and form indentations, but also change the precision of the mold surface, resulting in inconsistent forming curvature and fluctuations in springback.

[0005] Therefore, the present invention proposes a bending device for aluminum alloy bumper profiles for automobiles to solve the aforementioned problems. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a bending device for aluminum alloy bumper profiles used in automobiles, which solves the problem that impurities and metal debris on the surface of the profile affect the next bending before bending.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A bending device for automotive aluminum alloy bumper profiles includes a worktable. A guide rail is fixedly connected to the upper side of the worktable. A guide block is slidably connected to the inner side of the guide rail. A movable plate is fixedly connected to the upper side of the guide block. A pressing die is fixedly connected to the upper side of the movable plate. A side plate is fixedly connected to the right side of the worktable. A hydraulic cylinder for driving the pressing die is fixedly connected to the outer side of the side plate. A concave die is fixedly connected to the upper side of the guide rail. Clamps are provided on both the front and rear sides of the worktable. A cleaning unit is provided on the outer side of the worktable.

[0008] Preferably, the cleaning unit includes two support plates, which are fixedly connected to the left and right sides of the workbench. A top plate is fixedly connected to the upper side of the support plate, and a sliding groove is formed on the upper side of the top plate. A moving block is slidably connected to the inner side of the sliding groove, and a bottom plate is fixedly connected to the lower side of the moving block. Rectangular grooves are formed on both the left and right sides of the bottom plate, and rotating rods are rotatably connected to the inner side of the rectangular grooves. A horizontal plate is fixedly connected to the middle of the rotating rods on both sides, and a lifting groove is formed on the outer side of the horizontal plate. A lifting block is slidably connected to the inner side of the lifting groove, and two mounting blocks are fixedly connected to the outer side of the lifting block. A connecting rod is rotatably connected between the two mounting blocks, and a cleaning brush is fixedly connected to the middle of the connecting rod.

[0009] Preferably, a top block is fixedly connected to the upper side of the movable block, two branch blocks are fixedly connected to the upper side of the top plate, a screw is rotatably connected between the two branch blocks, the screw is threadedly connected to the top block, a motor for driving the screw to rotate is fixedly connected to the outer side of the branch blocks, and a fixing cover is fixedly connected to the upper side of the top plate.

[0010] Preferably, an electric push rod two for driving the lifting block to move is fixedly connected to the inner side of the lifting groove, a top frame is fixedly connected to the upper side of the mounting block, the connecting rod is rotatably connected to the top frame, and a motor two for driving the connecting rod to rotate is fixedly connected to the upper side of the top frame.

[0011] Preferably, a U-shaped plate is fixedly connected to both the front and rear sides of the lifting block. Two side blocks are fixedly connected to the outer side of the U-shaped plate. A limit block is fixedly connected to the outer side of the side block. A control rod is rotatably connected to the outer side of the limit block. Two swing blocks are fixedly connected to the outer side of the control rod. A nozzle is fixedly connected to the outer side of the swing block.

[0012] Preferably, a connecting pipe 1 is fixedly connected to the outside of the nozzle, a connecting pipe 2 is fixedly connected to the outside of the connecting pipe 1, an output pipe is fixedly connected between the two connecting pipes 2, an air pump is fixedly connected to the upper side of the fixed cover, and a delivery pipe is fixedly connected between the air pump and the output pipe.

[0013] Preferably, a rotating plate is fixedly connected to the outer ends of both rotating rods, a rotating plate is rotatably connected to the outer side of the rotating plate, a vertical rod is fixedly connected to the lower side of the moving block, an L-shaped plate is provided on the outer side of the vertical rod, the rotating plate is rotatably connected to the L-shaped plate, a fixing plate is fixedly connected to the lower end of the vertical rod, an electric push rod for driving the L-shaped plate to move is fixedly connected to the lower side of the fixing plate, and the L-shaped plate is slidably connected to the vertical rod.

[0014] Preferably, a rotating plate three is fixedly connected to the outer side of the control lever, an inclined plate is rotatably connected to the outer side of the rotating plate three, a rectangular block is rotatably connected to the outer side of the inclined plate, a track is fixedly connected to the outer side of the U-shaped plate, a reciprocating block is slidably connected to the inner side of the track, the reciprocating block is fixedly connected to the rectangular block, a spring is fixedly connected between the outer side of the reciprocating block and the inner wall of the track, a sliding plate is fixedly connected to the outer side of the reciprocating block, a contact plate is fixedly connected to the outer side of the sliding plate, a fixing block is fixedly connected to the outer side of the lifting block, a stabilizing rod is rotatably connected to the outer side of the fixing block, a cam is fixedly connected to the lower end of the stabilizing rod, pulleys are fixedly connected to the outer side of the stabilizing rod and the outer side of the connecting rod, a belt is provided between the two pulleys, and the cam abuts against the contact plate.

[0015] This invention provides a bending device for aluminum alloy bumper profiles used in automobiles. Compared with the prior art, it has the following advantages: (1) The aluminum alloy bumper profile bending device for automobiles is equipped with a worktable, a pressing mold and a concave mold to facilitate bending of aluminum alloy profiles. The top plate, slide groove, moving block, horizontal plate, electric push rod one and electric push rod two facilitate bending before bending. The electric push rod one controls the two horizontal plates to be placed vertically, and the cleaning brush is controlled to descend and contact the profile. Then the cleaning brush is controlled to clean the impurities and debris on the surface of the profile to avoid affecting the next bending.

[0016] (2) The aluminum alloy bumper profile bending device for automobiles is equipped with a lifting block, a U-shaped plate, a nozzle, a connecting pipe one, a connecting pipe two and an air pump. This allows the air pump to control the nozzle to spray airflow, which is convenient for the airflow to spray onto the surface of the profile, further improving the cleaning effect. At the same time, the nozzle is linked to control repeated swinging, increasing the cleaning range. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the cleaning unit in this invention; Figure 3 This is a partial three-dimensional structural diagram of the cleaning unit in this invention; Figure 4 This is a three-dimensional structural diagram of the movable block in this invention; Figure 5 forFigure 4 Enlarged view of point A in the middle; Figure 6 This is a three-dimensional structural diagram of the horizontal plate in this invention; Figure 7 This is a three-dimensional structural diagram of the lifting block in this invention; Figure 8 for Figure 7 Enlarged view of point B in the middle; Figure 9 for Figure 7 A magnified view of point C in the middle.

[0018] In the diagram: 1. Workbench; 2. Guide rail; 3. Guide block; 4. Moving plate; 5. Press mold; 6. Side plate; 7. Hydraulic cylinder; 8. Cleaning unit; 9. Fixture; 10. Die; 81. Support plate; 82. Top plate; 83. Fixed cover; 84. Motor 1; 85. Air pump; 86. Conveying pipe; 87. Slide groove; 88. Moving block; 89. Top block; 810. Screw; 811. Branch block; 812. Base plate; 813. Rectangular groove; 814. Output pipe; 815. Horizontal plate; 816. Rotating rod; 817. Rotating plate 1; 818. Rotating plate 2; 819. L-shaped plate; 820. Vertical pole; 821. Fixed plate; 822. Electric push rod 1; 823. 824. Lifting trough; 825. Lifting block; 826. Electric push rod II; 827. Mounting block; 828. Connecting rod; 829. Cleaning brush; 820. Top frame; 831. Motor II; 832. U-shaped plate; 833. Side block; 834. Limiting block; 835. Control rod; 836. Swinging block; 837. Nozzle; 838. Connecting pipe I; 839. Connecting pipe II; 840. Rotating plate III; 841. Inclined plate; 842. Track; 843. Reciprocating block; 844. Rectangular block; 845. Spring; 846. Slide plate; 847. Contact plate; 848. Fixing block; 849. Stabilizing rod; 850. Cam; 851. Pulley; 852. Belt. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] This invention provides the following technical solutions: Please see Figure 1 - Figure 9A bending device for aluminum alloy bumper profiles for automobiles includes a worktable 1. A guide rail 2 is fixedly connected to the upper side of the worktable 1. A guide block 3 is slidably connected to the inner side of the guide rail 2. A moving plate 4 is fixedly connected to the upper side of the guide block 3. A pressing die 5 is fixedly connected to the upper side of the moving plate 4. A side plate 6 is fixedly connected to the right side of the worktable 1. A hydraulic cylinder 7 for driving the pressing die 5 to move is fixedly connected to the outer side of the side plate 6. A concave die 10 is fixedly connected to the upper side of the guide rail 2. Clamps 9 are provided on both the front and rear sides of the worktable 1. A cleaning unit 8 is provided on the outer side of the worktable 1. When bending the profile, the profile is first placed on the two clamps 9 to limit the profile. Then, the hydraulic cylinder 7 is controlled to drive the pressing die 5 to move. The pressing die 5 cooperates with the concave die 10 to facilitate the bending operation of the profile.

[0021] The cleaning unit 8 includes two support plates 81, which are fixedly connected to the left and right sides of the workbench 1. A top plate 82 is fixedly connected to the upper side of the support plate 81. A sliding groove 87 is provided on the upper side of the top plate 82. A moving block 88 is slidably connected to the inner side of the sliding groove 87. A bottom plate 812 is fixedly connected to the lower side of the moving block 88. Rectangular grooves 813 are provided on both the left and right sides of the bottom plate 812. A rotating rod 816 is rotatably connected to the inner side of the rectangular groove 813. A horizontal plate 815 is fixedly connected to the middle of both rotating rods 816. A lifting groove 823 is provided on the outer side of the horizontal plate 815. A lifting block 824 is slidably connected to the inner side of the lifting groove 823. Two mounting blocks 826 are fixedly connected to the outer side of the lifting block 824. A connecting rod 827 is rotatably connected between the two mounting blocks 826. A cleaning brush 828 is fixedly connected to the middle of the connecting rod 827. The outer ends of the two rotating rods 816 are fixedly connected to rotating plate 1 817. Rotating plate 2 818 is rotatably connected to the outer side of rotating plate 1 817. The lower side of the moving block 88 is fixedly connected to the upright 820. An L-shaped plate 819 is provided on the outer side of the upright 820. Rotating plate 2 818 is rotatably connected to L-shaped plate 819. The lower end of the upright 820 is fixedly connected to the fixing plate 821. An electric push rod 1 822 that drives L-shaped plate 819 to move is fixedly connected to the lower side of the fixing plate 821. L-shaped plate 819 is slidably connected to upright 820. An electric push rod 2 825 that drives lifting block 824 to move is fixedly connected to the inner side of lifting groove 823. The upper side of mounting block 826 is fixedly connected to top frame 829. Connecting rod 827 is rotatably connected to top frame 829. A motor 2 830 that drives connecting rod 827 to rotate is fixedly connected to the upper side of top frame 829.

[0022] When bending the profile, firstly, control the electric push rod 822 to move the L-shaped plate 819. The L-shaped plate 819 drives the rotating plate 818 to rotate, the rotating plate 818 drives the rotating plate 817 to rotate, and the rotating plate 817 drives the rotating rod 816 to rotate. Since the rotating plates 817 and 818 on both sides are symmetrically distributed, the rotating rods 816 on both sides rotate in opposite directions. The rotating rods 816 drive the horizontal plate 815 to rotate, so that the horizontal plate 815 is placed vertically. Then, control the electric push rod 825 to lower the lifting block 824. The lifting block 824 drives the cleaning brush 828 to lower, so that the cleaning brush 828 comes into contact with the profile, making it easier for the cleaning brush 828 to clean the impurities and debris on both sides of the profile.

[0023] A top block 89 is fixedly connected to the upper side of the movable block 88. Two branch blocks 811 are fixedly connected to the upper side of the top plate 82. A screw 810 is rotatably connected between the two branch blocks 811. The screw 810 is threadedly connected to the top block 89. A motor 84 that drives the screw 810 to rotate is fixedly connected to the outer side of the branch blocks 811. A fixed cover 83 is fixedly connected to the upper side of the top plate 82. When the cleaning brush 828 contacts the profile, the motor 84 drives the screw 810 to rotate. The screw 810 drives the top block 89 to move left and right. The top block 89 drives the movable block 88 to move. The movable block 88 drives the bottom plate 812 to move left and right. The bottom plate 812 drives the cleaning brush 828 to move left and right, which facilitates the cleaning of impurities and metal debris. When cleaning, the motor 84 is started. The motor 84 drives the connecting rod 827 to rotate. The connecting rod 827 drives the cleaning brush 828 to rotate, completing the cleaning of impurities and metal debris.

[0024] U-shaped plates 831 are fixedly connected to both the front and rear sides of the lifting block 824. Two side blocks 832 are fixedly connected to the outer side of the U-shaped plates 831. Limit blocks 833 are fixedly connected to the outer side of the side blocks 832. A control rod 834 is rotatably connected to the outer side of the limit blocks 833. Two swing blocks 835 are fixedly connected to the outer side of the control rod 834. A nozzle 836 is fixedly connected to the outer side of the swing blocks 835. A connecting pipe 1 837 is fixedly connected to the outer side of the nozzle 836. A connecting pipe 2 838 is fixedly connected to the outer side of the connecting pipe 1 837. The two connecting pipes 2 838... An output pipe 814 is fixedly connected between the two. An air pump 85 is fixedly connected to the upper side of the fixed cover 83. A delivery pipe 86 is fixedly connected between the air pump 85 and the output pipe 814. When cleaning, the air pump 85 is started. Under the action of the delivery pipe 86, the output pipe 814, the second connecting pipe 838 and the first connecting pipe 837, multiple nozzles 836 can spray airflow onto the surface of the profile at the same time to further clean the impurities and debris on the surface of the profile. The delivery pipe 86, the output pipe 814, the second connecting pipe 838 and the first connecting pipe 837 are all made of flexible hose material.

[0025] A rotating plate 839 is fixedly connected to the outer side of the control lever 834. A ramp 840 is rotatably connected to the outer side of the rotating plate 839. A rectangular block 843 is rotatably connected to the outer side of the ramp 840. A track 841 is fixedly connected to the outer side of the U-shaped plate 831. A reciprocating block 842 is slidably connected to the inner side of the track 841. The reciprocating block 842 is fixedly connected to the rectangular block 843. A spring 844 is fixedly connected between the outer side of the reciprocating block 842 and the inner wall of the track 841. A sliding plate 845 is fixedly connected to the outer side of the reciprocating block 842. A contact plate 846 is fixedly connected to the outer side of the sliding plate 845. A fixing block 847 is fixedly connected to the outer side of the lifting block 824. A stabilizing rod 848 is rotatably connected to the outer side of the fixing block 847. A cam 849 is fixedly connected to the lower end of the stabilizing rod 848. The outer side of the stabilizing rod 848 is connected to the outer side of the connecting rod 827. Each component is fixedly connected to a pulley 850, with a belt 851 positioned between the two pulleys 850. A cam 849 abuts against a contact plate 846. When the cleaning brush 828 rotates, the connecting rod 827 drives the pulley 850 to rotate. Under the action of the belt 851, the connecting rod 827 drives the stabilizing rod 848 to rotate. The stabilizing rod 848 drives the cam 849 to rotate. The cam 849 drives the contact plate 846 to reciprocate. The contact plate 846 drives the sliding plate 845 to move. The sliding plate 845 drives the reciprocating block 842 to move. The reciprocating block 842 drives the inclined plate 840 on the rectangular block 843 to rotate. The inclined plate 840 drives the rotating plate 839 to rotate. The rotating plate 839 drives the control rod 834 to rotate. The control rod 834 drives the swing block 835 to swing repeatedly. The swing block 835 drives the nozzle 836 to swing repeatedly, further increasing the cleaning range.

[0026] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0027] Working principle: When bending the profile, the profile is first placed on two clamps 9 to limit the profile. Then, the hydraulic cylinder 7 is controlled to drive the pressing die 5 to move. The pressing die 5 cooperates with the die 10 to facilitate the bending operation of the profile.

[0028] When bending the profile, firstly, control the electric push rod 822 to move the L-shaped plate 819. The L-shaped plate 819 drives the rotating plate 818 to rotate, which in turn drives the rotating plate 817 to rotate. The rotating plate 817 drives the rotating rod 816 to rotate. Since the rotating plates 817 and 818 on both sides are symmetrically distributed, the rotating rods 816 on both sides rotate in opposite directions. The rotating rods 816 drive the horizontal plate 815 to rotate, making the horizontal plate 815 vertical. Then, control the electric push rod... The second 825 drives the lifting block 824 to descend, and the lifting block 824 drives the cleaning brush 828 to descend, so that the cleaning brush 828 comes into contact with the profile, making it easier for the cleaning brush 828 to clean the impurities and debris on both sides of the profile. During cleaning, the air pump 85 is started. Under the action of the delivery pipe 86, the output pipe 814, the second connecting pipe 838 and the first connecting pipe 837, multiple nozzles 836 can spray airflow on the surface of the profile at the same time, further cleaning the impurities and debris on the surface of the profile.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bending device for aluminum alloy bumper profiles for automobiles, comprising a workbench (1), characterized in that: The upper side of the workbench (1) is fixedly connected to a guide rail (2), the inner side of the guide rail (2) is slidably connected to a guide block (3), the upper side of the guide block (3) is fixedly connected to a moving plate (4), the upper side of the moving plate (4) is fixedly connected to a pressure mold (5), the right side of the workbench (1) is fixedly connected to a side plate (6), the outer side of the side plate (6) is fixedly connected to a hydraulic cylinder (7) for driving the pressure mold (5) to move, the upper side of the guide rail (2) is fixedly connected to a concave mold (10), clamps (9) are provided on both the front and rear sides of the workbench (1), and a cleaning unit (8) is provided on the outer side of the workbench (1).

2. The bending device for aluminum alloy bumper profiles for automobiles according to claim 1, characterized in that: The cleaning unit (8) includes two support plates (81), which are fixedly connected to the left and right sides of the workbench (1). A top plate (82) is fixedly connected to the upper side of the support plate (81). A sliding groove (87) is provided on the upper side of the top plate (82). A moving block (88) is slidably connected to the inner side of the sliding groove (87). A bottom plate (812) is fixedly connected to the lower side of the moving block (88). Rectangular grooves (813) are provided on both the left and right sides of the bottom plate (812). A rotating rod (816) is rotatably connected to the inner side of the device. A horizontal plate (815) is fixedly connected to the middle of both rotating rods (816). A lifting groove (823) is provided on the outer side of the horizontal plate (815). A lifting block (824) is slidably connected to the inner side of the lifting groove (823). Two mounting blocks (826) are fixedly connected to the outer side of the lifting block (824). A connecting rod (827) is rotatably connected between the two mounting blocks (826). A cleaning brush (828) is fixedly connected to the middle of the connecting rod (827).

3. The bending device for aluminum alloy bumper profiles for automobiles according to claim 2, characterized in that: A top block (89) is fixedly connected to the upper side of the movable block (88), and two branch blocks (811) are fixedly connected to the upper side of the top plate (82). A screw (810) is rotatably connected between the two branch blocks (811). The screw (810) is threadedly connected to the top block (89). A motor (84) for driving the screw (810) to rotate is fixedly connected to the outer side of the branch block (811). A fixing cover (83) is fixedly connected to the upper side of the top plate (82).

4. The bending device for aluminum alloy bumper profiles for automobiles according to claim 3, characterized in that: The inner side of the lifting groove (823) is fixedly connected to an electric push rod (825) that drives the lifting block (824) to move. The upper side of the mounting block (826) is fixedly connected to a top frame (829). The connecting rod (827) is rotatably connected to the top frame (829). The upper side of the top frame (829) is fixedly connected to a motor (830) that drives the connecting rod (827) to rotate.

5. The bending device for aluminum alloy bumper profiles for automobiles according to claim 4, characterized in that: The lifting block (824) is fixedly connected to both the front and rear sides with U-shaped plates (831). Two side blocks (832) are fixedly connected to the outer side of the U-shaped plate (831). A limit block (833) is fixedly connected to the outer side of the side block (832). A control rod (834) is rotatably connected to the outer side of the limit block (833). Two swing blocks (835) are fixedly connected to the outer side of the control rod (834). A nozzle (836) is fixedly connected to the outer side of the swing block (835).

6. The bending device for aluminum alloy bumper profiles for automobiles according to claim 5, characterized in that: A connecting pipe 1 (837) is fixedly connected to the outside of the nozzle (836), a connecting pipe 2 (838) is fixedly connected to the outside of the connecting pipe 1 (837), an output pipe (814) is fixedly connected between the two connecting pipes 2 (838), an air pump (85) is fixedly connected to the upper side of the fixed cover (83), and a delivery pipe (86) is fixedly connected between the air pump (85) and the output pipe (814).

7. The bending device for aluminum alloy bumper profiles for automobiles according to claim 6, characterized in that: The outer ends of the rotating rods (816) on both sides are fixedly connected to rotating plate one (817). Rotating plate two (818) is rotatably connected to the outer side of rotating plate one (817). A vertical rod (820) is fixedly connected to the lower side of the moving block (88). An L-shaped plate (819) is provided on the outer side of the vertical rod (820). Rotating plate two (818) is rotatably connected to the L-shaped plate (819). A fixing plate (821) is fixedly connected to the lower end of the vertical rod (820). An electric push rod one (822) for driving the L-shaped plate (819) to move is fixedly connected to the lower side of the fixing plate (821). The L-shaped plate (819) is slidably connected to the vertical rod (820).

8. The bending device for aluminum alloy bumper profiles for automobiles according to claim 7, characterized in that: A rotating plate three (839) is fixedly connected to the outer side of the control lever (834). A sloping plate (840) is rotatably connected to the outer side of the rotating plate three (839). A rectangular block (843) is rotatably connected to the outer side of the sloping plate (840). A track (841) is fixedly connected to the outer side of the U-shaped plate (831). A reciprocating block (842) is slidably connected to the inner side of the track (841). The reciprocating block (842) is fixedly connected to the rectangular block (843). A spring (844) is fixedly connected between the outer side of the reciprocating block (842) and the inner wall of the track (841). A sliding plate (845) is fixedly connected to the outside of the sliding plate (845), a contact plate (846) is fixedly connected to the outside of the sliding plate (845), a fixing block (847) is fixedly connected to the outside of the lifting block (824), a stabilizing rod (848) is rotatably connected to the outside of the fixing block (847), a cam (849) is fixedly connected to the lower end of the stabilizing rod (848), pulleys (850) are fixedly connected to the outside of the stabilizing rod (848) and the outside of the connecting rod (827), a belt (851) is provided between the two pulleys (850), and the cam (849) abuts against the contact plate (846).

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