A special-shaped steel pipe bending tool for automobile anti-collision beams

Abstract

The application relates to the technical field of steel pipe bending, and discloses a special-shaped steel pipe bending tool for automobile anti-collision beams, which comprises a bottom plate, a base frame is fixedly connected to the top of the bottom plate, a first conveying device is arranged at the top of the bottom plate, and a first feeding mechanism is arranged on the first conveying device. The first conveying device conveys the special-shaped steel pipe, after being conveyed to one side of the pushing plate, the pushing plate is controlled to be inserted into the insertion slot to control the lifting and height adjustment of the steel pipe, so as to cooperate with the left and right conveying and adjustment mode of the first conveying device on the steel pipe, the position of the special-shaped steel pipe with different shapes can be quickly adjusted and positioned, the center of the special-shaped steel pipe can be aligned with the bending station, after the fixed block is controlled to move, the bending end of the mandrel can be further inserted into the steel pipe, the bending can effectively avoid the abnormal deformation of the steel pipe, and the whole process does not need too much manual participation, is more labor-saving and has higher efficiency.

Description

Technical Field

[0001] This invention relates to the field of steel pipe bending technology, and in particular to a bending fixture for irregularly shaped steel pipes used in automobile anti-collision beams. Background Technology

[0002] Automotive crash beams are devices that effectively absorb collision energy and minimize damage to the longitudinal beams of the vehicle body during low-speed collisions. In the manufacturing and processing of automotive crash beams, shaped steel pipes are a common material used in the processing of crash beams.

[0003] Patent publication number CN209550325U discloses a bending die for irregularly shaped steel pipes, including a base. A lower template is fixedly connected to the upper end of the base. A vertically oriented straight groove is formed on the side wall of the lower template. A threaded rod is rotatably connected to the inner wall of the straight groove. A motor groove is formed on the side wall of the lower template. A drive motor is fixedly connected to the top of the motor groove. The output shaft of the drive motor passes through the inner wall of the motor groove and extends into the straight groove, where it is fixedly connected to the threaded rod. A slider that is slidably connected in the straight groove is threaded onto the threaded rod. When separating the upper and lower templates, the steel pipe placed on the placement plate can be moved to the upper end of the arc-shaped block, and then the steel pipe can be manually pushed into the steel pipe groove for bending. This eliminates the need to lift the steel pipe from the ground to the upper end of the lower template, saving manpower. By setting multiple steel pipe grooves and bending heads, multiple steel pipes can be processed simultaneously, improving work efficiency.

[0004] The above devices avoid the labor-intensive problem of manual handling by lifting and feeding steel pipes. However, in the actual bending of irregular steel pipes, when the steel pipes being processed are hollow, deformation is very likely to occur during bending. The above devices lack the function of preventing such deformation. The existing method is to insert a mandrel inside the steel pipe during bending to provide internal support and prevent deformation. However, since the mandrel needs to be inserted into the steel pipe to continue the operation, the traditional operation method is usually done manually, which is quite troublesome. Therefore, a bending fixture for irregular steel pipes for automotive anti-collision beams is proposed to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a bending fixture for irregularly shaped steel pipes used in automotive anti-collision beams.

[0006] The present invention provides a bending fixture for irregularly shaped steel tubes used in automotive anti-collision beams, which adopts the following technical solution:

[0007] A bending fixture for irregularly shaped steel pipes for automotive anti-collision beams includes a base plate, a base frame fixedly connected to the top of the base plate, a first conveying device provided on the top of the base plate, and a first feeding mechanism provided on the first conveying device.

[0008] The first feeding mechanism includes a mounting plate, which is fixedly connected to the outside of the first conveying device. The mounting plates are arranged at equal intervals on the first conveying device. A movable plate is provided on the top of the mounting plate, which extends into the interior of the mounting plate and is slidably connected to the mounting plate. Two clamping plates are slidably connected to the top of the movable plate. A bearing frame is fixedly connected to one side wall of the first conveying device towards the base frame. A moving block is slidably connected to the bearing frame. A frame plate is fixedly connected to the top of the moving block. A lifting block is slidably connected inside the frame plate. A first cylinder is fixedly connected to the bottom of the lifting block. The first cylinder is fixedly connected to the top of the moving block. A push plate is provided on one side of the lifting block, which passes through the lifting block. A slot is provided on the movable plate, and the push plate matches the slot. A second cylinder is fixedly connected to one side wall of the push plate, and one end of the second cylinder is fixedly connected to the lifting block.

[0009] A core rod is provided at the top of the base frame. The core rod includes a bent end and a connecting end. The connecting end is fixedly connected to the bent end. A main body plate is slidably connected to the base frame. A control component is provided on the main body plate. The control component includes a lifting frame. The lifting frame is slidably connected to the main body plate. A fixing block is slidably connected inside the lifting frame. Two pressure plates are slidably connected inside the fixing block. A U-shaped plate is provided at the top of the fixing block. The U-shaped plate extends into the fixing block. Both ends of the U-shaped plate are fixedly connected to the tops of the two pressure plates, respectively. The connecting end passes through the fixing block. The outer side of the connecting end is respectively attached to the pressure plate and the fixing block.

[0010] By adopting the above technical solution, the first conveying device conveys the irregular steel pipe fittings. After conveying them to one side of the push plate, the push plate can be controlled to insert into the slot to control the height adjustment of the steel pipe fittings. This, in conjunction with the first conveying device's left and right conveying and adjustment of the steel pipe fittings, can quickly adjust and position irregular steel pipe fittings of different shapes, ensuring that their center is aligned with the bending station. At the same time, after controlling the movement of the fixing block, the bending end of the mandrel can be further controlled to insert into the steel pipe fitting. This bending effectively avoids abnormal deformation of the steel pipe fittings. Moreover, the entire process requires minimal manual intervention, saving manpower and increasing efficiency.

[0011] Preferably, a spring is fixedly connected inside the bearing frame, one end of the spring is fixedly connected to one side of the moving block, and two spring plates are slidably connected inside the movable plate, with the two spring plates respectively fixedly connected to the two clamping plates.

[0012] By adopting the above technical solution, the spring provides an elastic force to the moving block.

[0013] Preferably, a third cylinder is fixedly connected to one side wall of the base frame, one end of the third cylinder is fixedly connected to one side of the main body plate, and a fourth cylinder is fixedly connected inside the main body plate, one end of the fourth cylinder is fixedly connected to the bottom of the lifting frame.

[0014] By adopting the above technical solution, the third cylinder pushes and pulls the main body plate after it is working.

[0015] Preferably, a threaded adjusting rod is rotatably connected inside the lifting frame, the threaded adjusting rod passes through the fixing block and is threadedly connected to the fixing block, a first motor is fixedly connected to the outside of the lifting frame, the first motor is fixedly connected to one end of the threaded adjusting rod through an output shaft, and a fifth cylinder is fixedly connected to the top wall of the U-shaped plate, one end of the fifth cylinder is fixedly connected to the top of the fixing block.

[0016] By adopting the above technical solution, the threaded adjusting rod rotates and drives the fixed block to move horizontally.

[0017] Preferably, a platform plate is fixedly connected to the side wall of the first conveying device away from the bearing frame. Support legs are fixedly connected to the platform plate, the first conveying device, and the bearing frame. The support legs are fixedly connected to the top of the base plate. A bending mechanism is provided on the platform plate. The bending mechanism includes a rectangular frame and a support plate. The rectangular frame and the support plate are both fixedly connected to the top of the platform plate. The rectangular frame is located between the support plate and the first conveying device. A rotating plate is provided on the top of the support plate. A round rod is fixedly connected to the bottom of the rotating plate. The round rod passes through the top wall of the support plate and is rotatably connected to the support plate. A bending plate is placed on the top of the rotating plate. A first slider is slidably connected to the rotating plate. A first positioning plate is provided on the top of the first slider. A sixth cylinder is fixedly connected inside the rotating plate. One end of the sixth cylinder is fixedly connected to one side of the first slider. An auxiliary frame is slidably connected inside the rectangular frame. Two second sliders are slidably connected inside the auxiliary frame. A second positioning plate is provided on the top of the second sliders. Two seventh cylinders are fixedly connected inside the auxiliary frame. One end of each of the two seventh cylinders is fixedly connected to one side of each of the two second sliders.

[0018] By adopting the above technical solution, the first slider can move on the rotating plate.

[0019] Preferably, a first gear is fixedly connected to the outside of the round rod, and a second motor is fixedly connected to the bottom of the platform plate. The second motor is fixedly connected to a second gear through an output shaft. The second gear is located on one side of the first gear, and the first gear meshes with the second gear.

[0020] By adopting the above technical solution, the rotation of the second gear drives the rotation of the first gear.

[0021] Preferably, a first threaded fixing rod is fixedly connected to the top of both the first slider and the second slider. The first threaded fixing rod passes through the first positioning plate and the second positioning plate respectively. A first fixing ring is threadedly connected to the outside of the first threaded fixing rod. A rectangular positioning rod is fixedly connected to the top of the rotating plate. A positioning groove is opened on the bending plate. The rectangular positioning rod extends into the positioning groove and matches the positioning groove. A second threaded fixing rod is integrally formed at one end of the rectangular positioning rod. The second threaded fixing rod extends out of the bending plate. A second fixing ring is threadedly connected to the outside of the second threaded fixing rod.

[0022] By adopting the above technical solution, the bending plate, the first positioning plate and the second positioning plate are fixed by screwing the first fixing ring and the second fixing ring into the outside of the first threaded fixing rod and the second threaded fixing rod.

[0023] Preferably, an extension block is fixedly connected to the bottom of the auxiliary frame, the extension block penetrates the platform plate, and a through groove is provided on the extension block. An installation frame is fixedly connected to the bottom of the platform plate, a threaded block is slidably connected inside the installation frame, and a first threaded control rod is rotatably connected inside the installation frame. The first threaded control rod penetrates the threaded block and is threadedly connected to the threaded block. A third motor is fixedly connected to the outside of the installation frame, and the third motor is fixedly connected to one end of the first threaded control rod through an output shaft.

[0024] By adopting the above technical solution, the third motor drives the first threaded control rod to rotate after it starts working.

[0025] Preferably, an L-shaped plate is provided on one side of the threaded block, the L-shaped plate penetrates the threaded block, and an eighth cylinder is fixedly connected to one side wall of the L-shaped plate, with one end of the eighth cylinder fixedly connected to one side of the threaded block.

[0026] By adopting the above technical solution, the eighth cylinder pushes and pulls the threaded block after it starts working.

[0027] Preferably, a second conveying device is fixedly connected to the top of the base plate. The second conveying device has a discharge chute, which is arranged at equal intervals on the second conveying device. A second feeding mechanism is provided on the second conveying device. The second feeding mechanism includes a track frame, which is fixedly connected to one side of the second conveying device. A second threaded control rod is rotatably connected inside the track frame. A fourth motor is fixedly connected to the outside of the track frame. The fourth motor is fixedly connected to one end of the second threaded control rod through its output shaft. A connecting block is slidably connected inside the track frame. The second threaded control rod passes through the connecting block and is threadedly connected to the connecting block. A pusher plate is fixedly connected to the top of the connecting block.

[0028] By adopting the above technical solution, the fourth motor drives the second threaded control rod to rotate through the output shaft.

[0029] In summary, the present invention has the following beneficial technical effects:

[0030] 1. A bending fixture for irregularly shaped steel pipes used in automotive anti-collision beams, wherein a first conveying device conveys the irregularly shaped steel pipe to one side of a pusher plate, and the pusher plate can be controlled to insert into a slot to control the height adjustment of the steel pipe. This, in conjunction with the first conveying device's left and right conveying and adjustment of the steel pipe, can quickly adjust and position irregularly shaped steel pipes of different shapes, ensuring that their center is aligned with the bending station. Simultaneously, by controlling the movement of the fixing block, the bending end of the mandrel can be further controlled to insert into the steel pipe, thereby effectively preventing abnormal deformation of the steel pipe. The entire process requires minimal manual intervention, saving manpower and increasing efficiency.

[0031] 2. A bending fixture for irregular steel pipes used in automobile anti-collision beams, wherein a second conveying device is used for front-end feeding and transporting the steel pipe to the bending station, which can effectively avoid the labor-intensive situation of manual handling and feeding, and the feeding process does not require much manual intervention, thus saving manpower and increasing feeding efficiency.

[0032] 3. A bending fixture for irregularly shaped steel pipes used in automotive anti-collision beams, wherein the bending plate, the first positioning plate, the second positioning plate and the mandrel can be quickly disassembled and removed, and the loading and unloading process is simple and convenient, which is conducive to workers to quickly get started and operate. It can flexibly match the bending requirements of steel pipes with different cross-sectional shapes and has a wider range of applications. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the present invention;

[0034] Figure 2 This is a cross-sectional view of the main body plate in this invention;

[0035] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0036] Figure 4 This is a schematic diagram of the structure of the bending plate, the first positioning plate, and the second positioning plate after disassembly in this invention;

[0037] Figure 5 for Figure 4 Enlarged view of point B in the image;

[0038] Figure 6 This is a schematic diagram of the clamping plate in this invention;

[0039] Figure 7 This is a schematic diagram of the platform plate in this invention;

[0040] Figure 8This is a schematic diagram of the auxiliary frame in this invention;

[0041] Figure 9 This is a schematic diagram of the track frame structure in this invention.

[0042] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Base frame; 3. First conveying device; 4. First feeding mechanism; 41. Mounting plate; 42. Movable plate; 43. Clamping plate; 44. Bearing frame; 45. Moving block; 46. Frame plate; 47. Lifting block; 48. First cylinder; 49. Pushing plate; 491. Second cylinder; 492. Spring; 493. Spring leaf; 5. Core rod; 51. Bending end; 52. Connecting end; 6. Main body plate; 7. Control component; 71. Lifting frame; 72. Fixing block; 73. Pressure plate; 74. U-shaped plate; 75. Threaded adjusting rod; 76. First motor; 77. Fifth cylinder; 78. Third cylinder; 79. Fourth cylinder; 8. Bending mechanism; 81. Rectangular frame; 82. Support plate; 83. Rotating plate; 84. Round rod; 85. 86. Bending plate; 87. First slider; 88. First positioning plate; 89. Sixth cylinder; 80. Auxiliary frame; 81. Second slider; 892. Second positioning plate; 893. Seventh cylinder; 894. First gear; 895. Second motor; 896. Second gear; 897. First threaded fixing rod; 898. Rectangular positioning rod; 899. Second threaded fixing rod; 881. Extension block; 882. Mounting frame; 883. First threaded control rod; 884. Third motor; 885. Threaded block; 886. L-shaped plate; 887. Eighth cylinder; 9. Second feeding mechanism; 91. Track frame; 92. Second threaded control rod; 93. Fourth motor; 94. Connecting block; 95. Push plate; 10. Platform plate; 11. Second conveying device; 12. Discharge chute. Detailed Implementation

[0043] The following is in conjunction with the appendix Figure 1 -Appendix Figure 9 The present invention will be described in further detail below.

[0044] This invention discloses a bending fixture for irregularly shaped steel tubes used in automotive anti-collision beams. (See reference...) Figures 1-9 The device includes a base plate 1, a base frame 2 fixedly connected to the top of the base plate 1, a first conveying device 3 provided on the top of the base plate 1, a first feeding mechanism 4 provided on the first conveying device 3, and the first feeding mechanism 4 includes a mounting plate 41, which is fixedly connected to the outside of the first conveying device 3 and is arranged at equal intervals on the first conveying device 3.

[0045] A movable plate 42 is provided on the top of the mounting plate 41. The movable plate 42 extends into the interior of the mounting plate 41 and is slidably connected to the mounting plate 41. Two clamping plates 43 are slidably connected to the top of the movable plate 42. A bearing frame 44 is fixedly connected to one side wall of the first conveying device 3 towards the base frame 2. A moving block 45 is slidably connected to the bearing frame 44. A frame plate 46 is fixedly connected to the top of the moving block 45. A lifting block 47 is slidably connected inside the frame plate 46. A first cylinder 48 is fixedly connected to the bottom of the lifting block 47. The first cylinder 48 is fixedly connected to the top of the moving block 45. A push plate 49 is provided on one side of the lifting block 47. The push plate 49 passes through the lifting block 47. A slot is provided on the movable plate 42. The push plate 49 matches the slot. A second cylinder 491 is fixedly connected to one side wall of the push plate 49. One end of the second cylinder 491 is fixedly connected to the lifting block 47.

[0046] A core rod 5 is provided on the top of the base frame 2. The core rod 5 includes a bent end 51 and a connecting end 52. The connecting end 52 is fixedly connected to the bent end 51. A main body plate 6 is slidably connected to the base frame 2. A control component 7 is provided on the main body plate 6. The control component 7 includes a lifting frame 71. The lifting frame 71 is slidably connected to the main body plate 6. A fixing block 72 is slidably connected inside the lifting frame 71. Two pressure plates 73 are slidably connected inside the fixing block 72.

[0047] A U-shaped plate 74 is provided on the top of the fixed block 72. The U-shaped plate 74 extends into the interior of the fixed block 72. The two ends of the U-shaped plate 74 are fixedly connected to the tops of the two pressure plates 73 respectively. The connecting end 52 passes through the fixed block 72. The outer side of the connecting end 52 is in contact with the pressure plate 73 and the fixed block 72 respectively. The first conveying device 3 conveys the irregular steel pipe fitting. After conveying it to one side of the push plate 49, the push plate 49 can be controlled to insert into the slot to control the height adjustment of the steel pipe fitting. This works in conjunction with the left and right conveying and adjustment of the steel pipe fitting by the first conveying device 3. It can quickly adjust and position irregular steel pipe fittings of different shapes, so that their center can be aligned with the bending station. At the same time, after controlling the movement of the fixed block 72, the bending end 51 of the mandrel 5 can be further controlled to insert into the interior of the steel pipe fitting. This bending can effectively prevent abnormal deformation of the steel pipe fitting. At the same time, the whole process does not require much manual intervention, which saves manpower and is more efficient.

[0048] A spring 492 is fixedly connected inside the bearing frame 44. One end of the spring 492 is fixedly connected to one side of the moving block 45. Two spring plates 493 are slidably connected inside the movable plate 42. The two spring plates 493 are fixedly connected to two clamping plates 43 respectively. The spring 492 provides an elastic force to the moving block 45. A third cylinder 78 is fixedly connected to one side wall of the base frame 2. One end of the third cylinder 78 is fixedly connected to one side of the main body plate 6. A fourth cylinder 79 is fixedly connected inside the main body plate 6. One end of the fourth cylinder 79 is fixedly connected to the bottom of the lifting frame 71. After the three cylinders 78 are working, they push and pull the main plate 6. The lifting frame 71 is rotatably connected to a threaded adjusting rod 75. The threaded adjusting rod 75 passes through the fixed block 72 and is connected to the fixed block 72 by a thread. The lifting frame 71 is fixedly connected to a first motor 76 on the outside. The first motor 76 is fixedly connected to one end of the threaded adjusting rod 75 through an output shaft. The top wall of the U-shaped plate 74 is fixedly connected to a fifth cylinder 77. One end of the fifth cylinder 77 is fixedly connected to the top of the fixed block 72. After the threaded adjusting rod 75 rotates, it drives the fixed block 72 to move horizontally.

[0049] A platform plate 10 is fixedly connected to the side wall of the first conveying device 3 away from the bearing frame 44. Support legs are fixedly connected to the platform plate 10, the first conveying device 3, and the bearing frame 44. The support legs are fixedly connected to the top of the base plate. A bending mechanism 8 is provided on the platform plate 10. The bending mechanism 8 includes a rectangular frame 81 and a support plate 82. The rectangular frame 81 and the support plate 82 are both fixedly connected to the top of the platform plate 10. The rectangular frame 81 is located between the support plate 82 and the first conveying device 3. A rotating plate 83 is provided on the top of the support plate 82. A round rod 84 is fixedly connected to the bottom of the rotating plate 83. The round rod 84 passes through the top wall of the support plate 82 and is rotatably connected to the support plate 82.

[0050] A bending plate 85 is placed on the top of the rotating plate 83. A first slider 86 is slidably connected to the rotating plate 83. A first positioning plate 87 is set on the top of the first slider 86. A sixth cylinder 88 is fixedly connected inside the rotating plate 83. One end of the sixth cylinder 88 is fixedly connected to one side of the first slider 86. An auxiliary frame 89 is slidably connected inside the rectangular frame 81. Two second sliders 891 are slidably connected inside the auxiliary frame 89. A second positioning plate 892 is set on the top of the second sliders 891. Two seventh cylinders 893 are fixedly connected inside the auxiliary frame 89. One end of each of the two seventh cylinders 893 is fixedly connected to one side of the two second sliders 891 respectively. The first slider 86 can move on the rotating plate 83.

[0051] A first gear 894 is fixedly connected to the outside of the round rod 84. A second motor 895 is fixedly connected to the bottom of the platform plate 10. The second motor 895 is fixedly connected to a second gear 896 through an output shaft. The second gear 896 is located on one side of the first gear 894, and the first gear 894 and the second gear 896 mesh. When the second gear 896 rotates, it drives the first gear 894 to rotate. A first threaded fixing rod 897 is fixedly connected to the top of the first slider 86 and the second slider 891. The first threaded fixing rod 897 passes through the first positioning plate 87 and the second positioning plate 892 respectively. A first fixing ring is threadedly connected to the outside of the first threaded fixing rod 897. A rectangular positioning rod 898 is fixedly connected to the top of the rotating plate 83.

[0052] A positioning groove is provided on the bending plate 85. A rectangular positioning rod 898 extends into the positioning groove and matches the positioning groove. One end of the rectangular positioning rod 898 is integrally formed with a second threaded fixing rod 899. The second threaded fixing rod 899 extends out of the bending plate 85. A second fixing ring is threadedly connected to the outside of the second threaded fixing rod 899. The bending plate 85, the first positioning plate 87, and the second positioning plate 892 are fixed by screwing the first fixing ring and the second fixing ring into the outside of the first threaded fixing rod 897 and the second threaded fixing rod 899.

[0053] An extension block 881 is fixedly connected to the bottom of the auxiliary frame 89. The extension block 881 penetrates the platform plate 10 and has a through groove. An installation frame 882 is fixedly connected to the bottom of the platform plate 10. A threaded block 885 is slidably connected inside the installation frame 882. A first threaded control rod 883 is rotatably connected inside the installation frame 882. The first threaded control rod 883 penetrates the threaded block 885 and is threadedly connected to the threaded block 885. A third motor 884 is fixedly connected to the outside of the installation frame 882. The third motor 884 is fixedly connected to one end of the first threaded control rod 883 through its output shaft. After the third motor 884 works, it drives the first threaded control rod 883 to rotate.

[0054] An L-shaped plate 886 is provided on one side of the threaded block 885. The L-shaped plate 886 passes through the threaded block 885. An eighth cylinder 887 is fixedly connected to one side wall of the L-shaped plate 886. One end of the eighth cylinder 887 is fixedly connected to one side of the threaded block 885. After the eighth cylinder 887 works, it pushes and pulls the threaded block 885.

[0055] A second conveying device 11 is fixedly connected to the top of the base plate 1. A material discharge trough 12 is provided on the second conveying device 11. The material discharge troughs 12 are arranged at equal intervals on the second conveying device 11. A second feeding mechanism 9 is provided on the second conveying device 11. The second feeding mechanism 9 includes a track frame 91. The track frame 91 is fixedly connected to one side of the second conveying device 11. A second threaded control rod 92 is rotatably connected inside the track frame 91. A fourth motor 93 is fixedly connected to the outside of the track frame 91. The fourth motor 93 is fixedly connected to one end of the second threaded control rod 92 through its output shaft. A connecting block 94 is slidably connected inside the track frame 91. The second threaded control rod 92 passes through the connecting block 94 and is threadedly connected to the connecting block 94. A pusher plate 95 is fixedly connected to the top of the connecting block 94. The fourth motor 93 drives the second threaded control rod 92 to rotate through its output shaft.

[0056] In actual operation, when this device is used, it is first connected to the power supply. The irregular steel pipe fittings to be bent can be placed in the feeding trough 12 on the second conveying device 11. Then, the second conveying device 11 works to transport them. After the first conveying device 3 works, it transports the mounting plate 41. Since the movable plate 42 can be vertically lifted and lowered inside the mounting plate 41, when the mounting plate 41 is directly below the first conveying device 3, the movable plate 42 moves to the outside of the mounting plate 41 due to gravity. When the mounting plate 41 is directly above the first conveying device 3, the movable plate 42 moves to the inside of the mounting plate 41. Therefore, the second conveying device 11... When the irregular steel pipe on 1 needs to be fed, when it stops at a certain movable plate 42 below the first conveying device 3 that is aligned with the irregular steel pipe, the fourth motor 93 works and drives the second threaded control rod 92 to rotate. The second threaded control rod 92 drives the connecting block 94 to move. The connecting block 94 drives the pusher plate 95 to move and push out the irregular steel pipe. After the steel pipe is pushed out, it first contacts the inclined surfaces on the two clamping plates 43 on the movable plate 42. As the steel pipe continues to be pushed in, the two clamping plates 43 are spread apart. When the steel pipe is completely pushed out, under the elastic force of the spring 493, the two clamping plates 43 can tightly clamp the steel pipe, completing the first step of feeding.

[0057] After the steel pipe is pushed onto the first conveying device 3, the first conveying device 3 transports it to the movable plate 42 where the steel pipe is located. After the slot is on the side of the push plate 49, the second cylinder 491 works and pushes the push plate 49, causing the push plate 49 to insert into the slot. Then, after the first cylinder 48 works, it can push and pull the lifting block 47 up and down. At this time, the lifting block 47 is controlled to rise. Through the above operation, it can be seen that the movable plate 42 also drives the steel pipe to rise, so that the steel pipe is higher than the first positioning plate 87 and the second positioning plate 892. As the first conveying device 3 continues to transport, it controls the steel pipe to move to the top of the processing position. Then, it controls the steel pipe to move down to the bending position. Based on the above control of the lifting of the movable plate 42 and the cooperation of the first conveying device 3 to transport it laterally, it is also possible to accurately place steel pipes of different shapes, avoiding the problem of complicated subsequent positioning work due to different center positions caused by different cross sections.

[0058] After the irregular steel pipe is stopped in the processing position, the sixth cylinder 88 and the seventh cylinder 893 work to move the first slider 86 and the second slider 891 respectively. The first slider 86 and the second slider 891 move the first positioning plate 87 and the second positioning plate 892 respectively, causing the first positioning plate 87 to cooperate with the bending plate 85 to clamp the steel pipe, and the two second positioning plates 892 to clamp the steel pipe.

[0059] After the third cylinder 78 works, it pushes the main plate 6 horizontally. After the fourth cylinder 79 works, it pushes and pulls the lifting frame 71 vertically. Through the above connection relationship, it can be seen that the mandrel 5 can be adjusted in four directions to ensure that the mandrel 5 can be aligned with the steel pipe and accurately inserted. When the above irregular steel pipe is clamped, the first motor 76 works and drives the threaded adjustment rod 75 to rotate. The threaded adjustment rod 75 drives the fixing block 72 to move. The fixing block 72 drives the mandrel 5 to move, so that the mandrel 5 is inserted into the steel pipe and ensures that the bent end 51 on the mandrel 5 is at the corresponding part of the steel pipe that needs to be bent.

[0060] After the mandrel 5 is inserted, the second motor 895 operates and drives the second gear 896 to rotate. The second gear 896 drives the first gear 894 to rotate, the first gear 894 drives the round rod 84 to rotate, and the round rod 84 drives the rotating plate 83 to rotate. Through the above connection relationship, it can be seen that the steel pipe can be bent when the bending plate 85 rotates. During this period, the second positioning plate 892 is pulled along with the bending of the steel pipe to ensure that the steel pipe can remain stable during bending. After the bending is completed, the first positioning plate 87 is separated from the bending plate 85 and the two second positioning plates 892 are separated. The bent steel pipe is then removed. The third motor 884 operates and drives the threaded control rod. Rotation causes the threaded control rod to move the threaded block 885 towards the position of the extension block 881. When the L-shaped plate 886 moves to one side of the through groove, the eighth cylinder 887 works and pulls the L-shaped plate 886, causing it to insert into the through groove. Then, the threaded block 885 is controlled to move back, at which point the L-shaped plate 886 moves the extension block 881. The extension block 881 moves the auxiliary frame 89 towards the direction of the first conveying device 3, so as to facilitate the smooth progress of the next positioning operation. At the same time, after the push plate 49 leaves the slot, the moving block 45 is also pulled back to the initial position under the elastic tension of the spring 492, so as to facilitate the smooth progress of the next push plate 49 inserting into the movable plate 42.

[0061] Meanwhile, when dealing with the bending processing needs of irregularly shaped steel pipes with different cross-sectional shapes, after rotating the first and second fixing rings and removing them from the first threaded fixing rod 897 and the second threaded fixing rod 899, the bending plate 85, the first positioning plate 87 and the second positioning plate 892 can be removed and replaced. At the same time, after the fifth cylinder 77 works, it can push the U-shaped plate 74. After the U-shaped plate 74 drives the pressure plate 73 to move above the connecting end 52 of the mandrel 5, the mandrel 5 can also be quickly removed and replaced to match the cross-sectional shape of different steel pipes. This convenient replacement can flexibly adapt to the bending and positioning clamping needs of steel pipes with different cross-sectional shapes, and has a wider range of applications.

[0062] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A bending fixture for irregularly shaped steel tubes used in automotive anti-collision beams, characterized in that: Includes a base plate (1), a base frame (2) is fixedly connected to the top of the base plate (1), a first conveying device (3) is provided on the top of the base plate (1), and a first feeding mechanism (4) is provided on the first conveying device (3); The first feeding mechanism (4) includes a mounting plate (41), which is fixedly connected to the outside of the first conveying device (3). The mounting plates (41) are arranged at equal intervals on the first conveying device (3). A movable plate (42) is provided on the top of the mounting plate (41). The movable plate (42) extends into the interior of the mounting plate (41) and is slidably connected to the mounting plate (41). Two clamping plates (43) are slidably connected to the top of the movable plate (42). A bearing frame (44) is fixedly connected to one side wall of the first conveying device (3) towards the base frame (2). A moving block (45) is slidably connected to the bearing frame (44). A frame plate (46) is fixedly connected to the top of the movable block (45). A lifting block (47) is slidably connected inside the frame plate (46). A first cylinder (48) is fixedly connected to the bottom of the lifting block (47). The first cylinder (48) is fixedly connected to the top of the movable block (45). A push plate (49) is provided on one side of the lifting block (47). The push plate (49) passes through the lifting block (47). A slot is provided on the movable plate (42). The push plate (49) matches the slot. A second cylinder (491) is fixedly connected to one side wall of the push plate (49). One end of the second cylinder (491) is fixedly connected to the lifting block (47). The base frame (2) is provided with a core rod (5) at the top. The core rod (5) includes a bent end (51) and a connecting end (52). The connecting end (52) is fixedly connected to the bent end (51). The base frame (2) is slidably connected with a main plate (6). The main plate (6) is provided with a control component (7). The control component (7) includes a lifting frame (71). The lifting frame (71) is slidably connected to the main plate (6). The lifting frame (71) is slidably connected with a fixing block (72) inside. The fixing block (72) is slidably connected with two pressure plates (73). The top of the fixing block (72) is provided with a U-shaped plate (74). The U-shaped plate (74) extends into the interior of the fixing block (72). The two ends of the U-shaped plate (74) are fixedly connected to the tops of the two pressure plates (73) respectively. The connecting end (52) penetrates the fixing block (72). The outer side of the connecting end (52) is in contact with the pressure plate (73) and the fixing block (72) respectively. The bottom plate (1) is fixedly connected to the top of the second conveying device (11). The second conveying device (11) is provided with a feeding trough (12). The feeding trough (12) is arranged at equal intervals on the second conveying device (11). The second conveying device (11) is provided with a second feeding mechanism (9). The second feeding mechanism (9) includes a track frame (91). The track frame (91) is fixedly connected to one side of the second conveying device (11). The track frame (91) is rotatably connected to a second threaded control rod (92). The track frame (91) is fixedly connected to a fourth motor (93) on the outside of the track frame (91). The fourth motor (93) is fixedly connected to one end of the second threaded control rod (92) through its output shaft. The track frame (91) is slidably connected to a connecting block (94). The second threaded control rod (92) passes through the connecting block (94) and is threadedly connected to the connecting block (94). The top of the connecting block (94) is fixedly connected to a pusher plate (95).

2. The bending fixture for irregularly shaped steel pipes used in automotive anti-collision beams according to claim 1, characterized in that: A spring (492) is fixedly connected inside the bearing frame (44). One end of the spring (492) is fixedly connected to one side of the moving block (45). Two springs (493) are slidably connected inside the movable plate (42). The two springs (493) are fixedly connected to the two clamping plates (43) respectively.

3. The bending fixture for irregularly shaped steel pipes used in automotive anti-collision beams according to claim 1, characterized in that: A third cylinder (78) is fixedly connected to one side wall of the base frame (2). One end of the third cylinder (78) is fixedly connected to one side of the main body plate (6). A fourth cylinder (79) is fixedly connected inside the main body plate (6). One end of the fourth cylinder (79) is fixedly connected to the bottom of the lifting frame (71).

4. The bending fixture for irregularly shaped steel pipes used in automotive anti-collision beams according to claim 1, characterized in that: The lifting frame (71) is rotatably connected to a threaded adjusting rod (75), which passes through the fixing block (72) and is connected to the fixing block (72) by a thread. The lifting frame (71) is fixedly connected to a first motor (76) on the outside. The first motor (76) is fixedly connected to one end of the threaded adjusting rod (75) through an output shaft. The top wall of the U-shaped plate (74) is fixedly connected to a fifth cylinder (77), one end of which is fixedly connected to the top of the fixing block (72).

5. The bending fixture for irregularly shaped steel pipes used in automotive anti-collision beams according to claim 1, characterized in that: A platform plate (10) is fixedly connected to the side wall of the first conveying device (3) away from the bearing frame (44). Support legs are fixedly connected to the platform plate (10), the first conveying device (3), and the bearing frame (44). The support legs are fixedly connected to the top of the base plate. A bending mechanism (8) is provided on the platform plate (10). The bending mechanism (8) includes a rectangular frame (81) and a support plate (82). The rectangular frame (81) and the support plate (82) are fixedly connected to the top of the platform plate (10). The rectangular frame (81) is located between the support plate (82) and the first conveying device (3). A rotating plate (83) is provided on the top of the support plate (82). A round rod (84) is fixedly connected to the bottom of the rotating plate (83). The round rod (84) passes through the top wall of the support plate (82) and is connected to the support plate (83). 82) Rotary connection, a bending plate (85) is placed on the top of the rotating plate (83), a first slider (86) is slidably connected on the rotating plate (83), a first positioning plate (87) is provided on the top of the first slider (86), a sixth cylinder (88) is fixedly connected inside the rotating plate (83), one end of the sixth cylinder (88) is fixedly connected to one side of the first slider (86), an auxiliary frame (89) is slidably connected inside the rectangular frame (81), two second sliders (891) are slidably connected inside the auxiliary frame (89), a second positioning plate (892) is provided on the top of the second sliders (891), two seventh cylinders (893) are fixedly connected inside the auxiliary frame (89), one end of the two seventh cylinders (893) is fixedly connected to one side of the two second sliders (891) respectively.

6. The bending fixture for irregularly shaped steel pipes used in automotive anti-collision beams according to claim 5, characterized in that: The round rod (84) is fixedly connected to the outside of the first gear (894), and the platform plate (10) is fixedly connected to the bottom of the second motor (895). The second motor (895) is fixedly connected to the second gear (896) through the output shaft. The second gear (896) is located on one side of the first gear (894), and the first gear (894) and the second gear (896) mesh with each other.

7. The bending fixture for irregularly shaped steel pipes used in automotive anti-collision beams according to claim 5, characterized in that: The top of the first slider (86) and the second slider (891) are both fixedly connected with a first threaded fixing rod (897). The first threaded fixing rod (897) passes through the first positioning plate (87) and the second positioning plate (892) respectively. The first threaded fixing rod (897) is connected to the outside of the first threaded fixing rod (897) by a thread. The top of the rotating plate (83) is fixedly connected with a rectangular positioning rod (898). The bending plate (85) is provided with a positioning groove. The rectangular positioning rod (898) extends into the positioning groove and matches the positioning groove. One end of the rectangular positioning rod (898) is integrally formed with a second threaded fixing rod (899). The second threaded fixing rod (899) extends out of the bending plate (85). The outside of the second threaded fixing rod (899) is connected to a second fixing ring by a thread.

8. The bending fixture for irregularly shaped steel pipes used in automotive anti-collision beams according to claim 5, characterized in that: An extension block (881) is fixedly connected to the bottom of the auxiliary frame (89). The extension block (881) penetrates the platform plate (10). A through groove is provided on the extension block (881). An installation frame (882) is fixedly connected to the bottom of the platform plate (10). A threaded block (885) is slidably connected inside the installation frame (882). A first threaded control rod (883) is rotatably connected inside the installation frame (882). The first threaded control rod (883) penetrates the threaded block (885) and is threadedly connected to the threaded block (885). A third motor (884) is fixedly connected to the outside of the installation frame (882). The third motor (884) is fixedly connected to one end of the first threaded control rod (883) through its output shaft.

9. The bending fixture for irregularly shaped steel pipes used in automotive anti-collision beams according to claim 8, characterized in that: An L-shaped plate (886) is provided on one side of the threaded block (885), the L-shaped plate (886) passes through the threaded block (885), and an eighth cylinder (887) is fixedly connected to one side wall of the L-shaped plate (886), one end of the eighth cylinder (887) is fixedly connected to one side of the threaded block (885).

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