A short-process manufacturing process and device for rolling and bending the A-pillar of an automobile

Abstract

The present invention discloses a short-process manufacturing process and device for the space rolling bending of an automobile A-pillar, which manufacturing process includes the following steps: extruding a profile; applying a vibration force; the profile passes into a first-pass three-roller bending mechanism; the profile continues to be sent forward to complete the horizontal bending of the middle section; the front end of the profile is transferred to the side of the entrance of the second-pass three-roller bending mechanism, and the end of the profile enters the second-pass three-roller bending mechanism; the subsequent extruded profile passes straight through the first-pass three-roller bending mechanism; the second-pass three-roller bending mechanism completes the vertical bending of a predetermined section of the profile; the rotary cutting device cuts off the tail end of the profile, and then performs spray quenching and unloading; the profile is sent into an aging furnace for aging strengthening treatment. The present invention designs a complete continuous production line to simultaneously perform the extrusion, bending, cooling, rotary cutting, unloading and heat treatment of the profile, shortening the production process, effectively improving the quality and stability of the profile, and improving the work efficiency of production.

Description

Technical Field

[0001] The invention belongs to the technical field of metal plastic processing and forming, and specifically relates to a short-process manufacturing process and device for spatial rolling bending of an automobile A-pillar. Background Art

[0002] Cars are a common means of transportation in the new era. While they bring convenience and speed, they also bring potential safety hazards. The A-pillar is one of the important components to ensure car safety. The A-pillar refers to the pillars on both sides of the front of the car body. It is the structural support part between the window and the front windshield, and is usually used to provide the rigidity and safety of the car body. At present, most A-pillars are made by bending profiles. The profile products have the characteristics of light weight, high strength, high rigidity, diversified cross-sections and wide applicability. The structural diagram of the profile used to make the A-pillar after bending is shown in the figure below. Figure 1 shown.

[0003] Profile bending is a common metal forming process. Bending is a process that combines stretching and bending, which can optimize the force distribution of the profile and improve the structural strength. The traditional profile bending process usually requires rotary cutting after the profile is extruded, and then quenching and cooling to adapt its hardness to the requirements of cold deformation. Then, bending is performed under cold deformation conditions. However, due to the large forming force during the bending process, it is easy to cause profile cracking, especially in the stress concentration area. In addition, the A-pillar is a spatial bend in the entire length direction, and the bending directions of different curved sections are not consistent. The traditional profile bending process usually requires clamping the two ends of the profile in steps and performing two bending operations to form a complex spatial bending shape. This process not only increases the complexity of the operation, but also easily generates waste, thereby reducing the utilization rate of the material. After forming, aging treatment and correction are required to improve the strength of the profile, eliminate residual deformation and ensure the final dimensional accuracy. Although this series of process steps can improve the mechanical properties and geometric accuracy of the profile, the overall process is cumbersome and time-consuming, resulting in low production efficiency and increased production costs. Therefore, the traditional profile bending process has problems such as high energy consumption, material waste and complex operation, and there is an urgent need to find more efficient and economical alternatives. Summary of the invention

[0004] The patent of this invention provides a short-process manufacturing process and device for the spatial rolling bending of the A-pillar of an automobile. A guiding device and a vibration-assisted rolling deformation device are arranged at the profile extrusion outlet. The residual heat of the extruded profile is combined with vibration to reduce the deformation resistance of the material, improve the forming limit, and promote the rapid relaxation of residual stress, thereby reducing the rebound after aging. After the segmented bending of the profile is completed, spray quenching and rotary cutting are carried out in sequence, and then the material is sent to the furnace for aging treatment. A set of continuous production lines can be used to continuously complete the complex forming process, thereby reducing production costs, shortening the process flow, improving production efficiency, and improving material utilization. At the same time, it is expected to further improve the service performance of the A-pillar.

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is:

[0006] A short-process manufacturing process for space rolling bending of an automobile A-pillar comprises the following steps:

[0007] S1, extruder continuously extrudes profiles;

[0008] S2, the vibration mechanism applies vibration force to each three-roll bending mechanism;

[0009] S3, the pressure rollers in each three-roller bending mechanism are away from the corresponding pressure rollers;

[0010] S4, the extruded profile is fed forward along the fixed guide rail and penetrates between the pressure roller and the pressure roller of the first three-roller bending mechanism;

[0011] S5, the profile is fed forward to a preset length, and the end is inserted into the movable guide rail. The pressure roller of the first three-roller bending mechanism approaches the pressure roller and is positioned at a preset position. The profile continues to be fed forward to complete the horizontal bending of the middle section.

[0012] S6, the movable guide rail clamps the end of the profile and moves synchronously. After the horizontal bending of the middle section of the profile is completed, the movable guide rail transfers the front end of the profile to the side of the entrance of the second three-roller bending mechanism. The second three-roller bending mechanism moves horizontally to allow the end of the profile to enter between the pressure roller and the pressure roller;

[0013] S7, the pressure roller of the first three-roller bending mechanism is reset again, and the subsequent extruded profile passes straightly; the front end of the profile enters the second three-roller bending mechanism, and completes the vertical rolling of the front straight section and part of the middle horizontal bending section of the profile in the process of relative rolling;

[0014] S8, after the vertical bending is completed, the peeling device cuts off the tail end of the profile from the subsequently extruded profile, spray quenches the cut profile, the pressure roller of the second three-roller bending mechanism is reset again, and the unloading device unloads the profile;

[0015] S9. The profiles after spray quenching are sent to the aging furnace for aging strengthening treatment.

[0016] Furthermore, in step S1, the residual heat temperature of the extruded profile is 200°C to 400°C.

[0017] Furthermore, in step S2, after the vibration force is applied, the amplitude of the pressure roller is 0.5 mm, the frequency is 40 Hz, and the amplitude of the two pressure rollers is 0.2 mm, the frequency is 20 Hz.

[0018] Furthermore, in step S9, the internal aging strengthening temperature of the aging furnace is 180° C., and the aging strengthening time is 4 hours.

[0019] A short-process manufacturing device for the space rolling bending of an automobile A-pillar is also provided, comprising a bottom plate, a fixed guide rail fixedly arranged on the bottom plate in sequence, a first-pass three-roller bending mechanism and a first horizontal positioning mechanism, the two ends of the fixed guide rail are respectively connected with the outlet of the extruder and the inlet of the first-pass three-roller bending mechanism, a movable plate is arranged at the positioning output end of the first horizontal positioning mechanism, a movable guide rail and a second horizontal positioning mechanism are respectively arranged on the movable plate, a second-pass three-roller bending mechanism is arranged at the positioning output end of the second horizontal positioning mechanism, a rotating positioning mechanism for driving the movable guide rail to rotate and position is arranged at the bottom of the movable plate, a spraying mechanism and a manipulator are arranged on the side of the movable guide rail away from the first-pass three-roller bending mechanism, and a rotary cutting mechanism is arranged on the side of the movable guide rail away from the manipulator;

[0020] The extruder continuously extrude the profile, and the profile enters the first three-roller bending mechanism through the fixed guide rail. After passing through the preset length, the end of the profile is clamped in the movable guide rail. The first three-roller bending mechanism horizontally bends the profile to the preset length. The rotating positioning mechanism drives the movable guide rail to follow the end of the profile to move synchronously to the inlet side of the first three-roller bending mechanism. The subsequent extruded profile passes through the first three-roller bending mechanism straight to the preset length. The first horizontal positioning mechanism drives the movable plate to move synchronously with the profile. During this process, the rotating positioning mechanism drives the movable guide rail to reset. The second three-roller bending mechanism vertically rolls the profile to the preset length. The rotary cutting mechanism cuts the end of the profile, and the robot transfers the cut profile to the bottom of the spraying mechanism for spraying.

[0021] Furthermore, the first-pass three-roller bending mechanism includes a fixed first roller frame and a first hydraulic cylinder, two vertically arranged first pressure rollers are rotatably installed in the first roller frame, and the power output end of the first hydraulic cylinder is fixedly connected to a first pressure roller that is slidably arranged in the first roller frame and vertically arranged, and the axis of the first pressure roller is equidistant from the axis of the two first pressure rollers.

[0022] Furthermore, the movable guide rail includes a movable frame, a lifting cylinder fixedly arranged on the side of the movable frame, a lifting plate fixedly connected to the output end of the lifting cylinder and located above the movable frame, and a horizontal cylinder fixedly arranged on both sides of the top surface of the lifting plate. The output ends of the two horizontal cylinders are arranged opposite to each other and are respectively fixedly connected to half of the movable guide rail.

[0023] Furthermore, the rotation positioning mechanism includes a first motor frame fixedly arranged on the bottom surface of the movable plate, a rotation driving motor fixedly installed on the first motor frame, a driving gear fixedly arranged on the output shaft end of the rotation driving motor, and an incomplete driven gear slidably connected to the bottom of the movable plate and meshing with the driving gear, and the end of the incomplete driven gear is fixedly connected to the bottom of the movable frame plate.

[0024] Furthermore, the second-pass three-roller bending mechanism includes a fixedly installed lifting plate, a second roller frame rotatably connected to the bottom of the lifting plate, and a second hydraulic cylinder arranged on the two outer side walls of the second roller frame, and two horizontally installed second pressure rollers are rotatably installed in the second roller frame. The power output end of the second hydraulic cylinder is fixedly connected to a second pressure roller slidably arranged in the second roller frame and arranged horizontally, and the axis of the second pressure roller is equidistant from the axis of the two second pressure rollers.

[0025] Furthermore, the bottom surface of the hoisting plate is provided with a sleeve located outside the top rotating shaft of the second roller frame, the side wall of the sleeve is provided with a notch, a positioning baffle is provided in the notch, a hanging ear located in the notch is fixedly provided outside the top rotating shaft of the second roller frame, and a tension spring is connected between the hanging ear and one side wall of the notch

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] 1. The present invention utilizes the residual heat of profile extrusion, proposes thermal vibration compounding to reduce the forming force, realizes the strengthening of profile extrusion material, ensures the high formability of the material, avoids bending forming cracking, and suppresses the residual stress and possible subsequent rebound during the profile extrusion process and bending deformation process;

[0028] 2. The present invention uses two-pass three-roller bending mechanisms to complete the space rolling of different lengths in two directions of the formed part, realizes the precise forming of the space curved surface, has high forming accuracy and efficiency, avoids the problem of waste caused by the clamping and deformation of the two ends of the material head during the existing stretch bending forming, and improves the utilization rate of the material;

[0029] 3. In the two-pass three-roller bending mechanism of the present invention, the cross-sectional shape of the roller is designed according to the surface structure of the profile to ensure that the roller can fit closely with each surface of the profile, thereby achieving stable support, transmission and movement effects;

[0030] 4. The present invention designs a complete continuous production line to simultaneously perform the extrusion, bending, cooling, rotary cutting, feeding and heat treatment of the profile, shortening the production process, effectively improving the quality and stability of the profile, and improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of an existing automobile A-pillar;

[0032] Figure 2 It is a flow chart of the short-process manufacturing process of the space rolling bending of the automobile A-pillar of the present invention;

[0033] Figure 3 It is a schematic diagram of the working state of the short-process manufacturing device for the space rolling bending of the automobile A-pillar of the present invention when the front end of the profile enters the movable guide rail;

[0034] Figure 4 It is a schematic diagram of the working state of the short-process manufacturing device for space rolling bending of the automobile A-pillar of the present invention when the profile is horizontally rolled;

[0035] Figure 5 It is a schematic diagram of the working state of the short-process manufacturing device for the space rolling bending of the automobile A-pillar of the present invention when the front end of the profile enters the second pass three-roller bending mechanism;

[0036] Figure 6 It is a schematic diagram of the working state of the short-process manufacturing device for space rolling bending of the automobile A-pillar of the present invention before the profile is vertically rolled;

[0037] Figure 7 It is a schematic diagram of the working state of the short-process manufacturing device for space rolling bending of the automobile A-pillar of the present invention after the profile is vertically rolled;

[0038] Figure 8 is a structural schematic diagram of the fixed guide rail;

[0039] Fig. 9 is a schematic diagram of the three-dimensional structure of the first-pass three-roller bending mechanism;

[0040] Fig.10 is a schematic side structural diagram of the first-pass three-roller bending mechanism;

[0041] Fig.11 A schematic diagram of the position distribution of the first pressure roller and the first pressure roller on the first roller frame;

[0042] Fig.12 is a structural schematic diagram of the movable guide rail;

[0043] Fig.13 is a structural schematic diagram of the rotation positioning mechanism;

[0044] Fig.14It is a schematic diagram of the three-dimensional structure of the second-pass three-roller bending mechanism;

[0045] Fig.15 It is a schematic diagram of the side structure of the second-pass three-roller bending mechanism;

[0046] Fig.16 A schematic diagram of the position distribution of the second pressure roller and the second pressure roller on the second roller frame;

[0047] Fig.17 for Fig.15 A schematic diagram of the enlarged structure of the middle part A;

[0048] Fig.18 It is a structural schematic diagram of the rotary cutting mechanism.

[0049] In the figure: 1, bottom plate; 2, fixed guide rail; 21, first bracket; 3, first three-roller bending mechanism; 301, first roller frame; 302, first hydraulic cylinder; 303, first pressure roller; 304, first pressure roller; 305, push-pull frame; 4, first horizontal positioning mechanism; 41, moving plate; 411, first arc guide groove; 412, second arc guide groove; 42, first auxiliary support platform; 43, second auxiliary support platform; 5, peeling mechanism; 501, reducer; 502, peeling positioning motor; 503, support cylinder; 504, support seat; 505, fixed frame; 506, swing frame; 507, peeling drive motor; 508, peeling blade; 509, swing hydraulic cylinder; 5010, belt transmission mechanism; 6, movable guide rail; 601, movable frame; 602, lifting cylinder; 603, lifting plate; 604 , horizontal cylinder; 605, movable guide rail half piece; 606, movable positioning plate; 7, second horizontal positioning mechanism; 701, guide plate; 702, synchronous conveyor belt mechanism; 703, guide groove; 704, auxiliary guide rod; 705, second bracket; 8, second pass three-roller bending mechanism; 801, lifting plate; 802, second roller frame; 803, second hydraulic cylinder; 804, second pressure roller; 805, second pressure roller; 806, thrust bearing; 807, top shaft; 808, connecting rod; 809, guide wheel frame; 8010, guide wheel group; 8011, sleeve; 8012, positioning baffle; 8013, hanging ear; 8014, tension spring; 9, rotation positioning mechanism; 901, first motor frame; 902, rotation drive motor; 903, driving gear; 904, incomplete driven gear; 10, manipulator. DETAILED DESCRIPTION

[0050] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0051] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0053] See attached Figure 2 The present invention provides a short-process manufacturing process for the space rolling bending of an automobile A-pillar, comprising the following steps:

[0054] S1. Continuously extrude the profile through an extruder. In this embodiment, the residual heat temperature of the extruded profile is 200°C to 400°C to reduce the forming force of the profile, so that the profile maintains good forming ability and reduces the risk of cracks caused by cold deformation.

[0055] S2. Apply vibration force to each three-roller bending mechanism through a vibration mechanism. In this embodiment, after the vibration force is applied, the amplitude of the pressure roller is preferably 0.5 mm, the frequency is 40 Hz, and the amplitude of the two pressure rollers is 0.2 mm, and the frequency is 20 Hz. By repeatedly vibrating the profile between the pressure roller and the two pressure rollers, the residual stress of the extruded material and the rebound phenomenon after roll bending can be effectively suppressed to improve the forming accuracy and quality.

[0056] S3. The pressure rollers in each three-roller bending mechanism are away from the corresponding pressure rollers, so that the end of the profile can bite between the pressure roller and the pressure roller. In this embodiment, the first three-roller bending mechanism and the second three-roller bending mechanism are used to cooperate with each other to complete the horizontal and vertical directions of different parts of the profile rod, respectively, so as to achieve precise forming of spatial bending. In combination with the existing three-roller bending mechanism, it can be known that by setting the axial distance between the two pressure rollers and the axial distance between the pressure roller and the symmetrical pressure rollers on both sides, assuming that the thickness of the profile does not change before and after rolling, the corresponding radius size of the profile after rolling can be determined. Specifically, in the first three-roller bending mechanism, the axial distance between the two pressure rollers is set to 600mm, and the minimum vertical distance between the axis of the pressure roller and the center position of the connecting line of the axes of the two pressure rollers is 146mm (horizontal rolling working position), and the maximum vertical distance is suitable for the profile to smoothly bite between the pressure roller and the pressure roller. In the second three-roller bending mechanism, the axial distance between the two pressure rollers is also set to 600mm, and the minimum vertical distance between the axis of the pressure roller and the center position of the line connecting the axes of the two pressure rollers is 294mm (vertical rolling working position), and the maximum vertical distance is also suitable for the profile to be smoothly bitten between the pressure roller and the pressure roller.

[0057] S4, the extruded profile is fed forward along the fixed guide rail and passes between the pressure roller and the pressure roller of the first three-roller bending mechanism. Preferably, the internal channel interface shape of the fixed guide rail matches the cross-sectional profile shape of the profile, so that the profile with residual temperature can be fed forward in a straight line after being acted on by the fixed guide rail, and the surface of the profile can be smoothed and shaped by the inner wall of the fixed guide rail.

[0058] S5. After the profile is fed forward by a preset length, the end is inserted into the movable guide rail, and the pressure roller of the first three-roller bending mechanism approaches the pressure roller and is positioned at a preset position. The profile completes the horizontal bending of the middle section while continuing to feed forward. The preset length of the profile fed forward is the length of the front straight section of the formed part, which is set to 848mm in this embodiment. It passes through the first three-roller bending mechanism in a straight line, that is, no rolling is performed in the horizontal direction, and then vertical rolling is performed in the second three-roller bending mechanism. The length of the middle section of the profile for horizontal bending is set to 433mm. During the continuous rolling process, the front straight section of the profile translates and rotates around the radius center of the bending section.

[0059] S6. The movable guide rail clamps the end of the profile and moves synchronously. After the horizontal bending of the middle section of the profile is completed, the movable guide rail transfers the front end of the profile to the side of the entrance of the second three-roller bending mechanism. The second three-roller bending mechanism moves horizontally to allow the end of the profile to enter between the pressure roller and the pressure roller. The movable guide rail clamps the front end of the profile and makes its direction in the preset direction so that the end can smoothly enter the second three-roller bending mechanism, thereby realizing the subsequent vertical rolling process. After the end of the profile enters the second three-roller bending mechanism, the movable guide rail releases the profile and resets it to avoid interference with the relative movement between the second three-roller bending mechanism and the profile, and also facilitates the end of the next formed part to smoothly enter the movable guide rail.

[0060] S7, the pressure roller of the first three-roller bending mechanism is reset again, and the extruded profile passes straightly. This straight section is the third section of the formed part, that is, the length of the rear straight section is set to 357mm, and neither horizontal rolling nor vertical rolling is performed. While the third section is extruded, the front end of the profile enters between the pressure roller and the pressure roller of the second three-roller bending mechanism, and completes the vertical rolling of the front straight section and part of the middle horizontal bending section of the profile in the process of relative rolling. In this embodiment, the first section of the formed part is all vertically rolled, and only the approximately 100mm portion of the second section that is continuous with the first section is vertically rolled.

[0061] S8. After the vertical bending is completed, the tail end of the profile is cut off from the subsequent extruded profile by the rotary cutting device, the cut profile is spray quenched, the pressure roller of the second three-roller bending mechanism is reset again, and the profile is unloaded by the unloading device. In this embodiment, the unloading device adopts a multi-degree-of-freedom industrial robot, and its execution end is equipped with a pneumatic gripper.

[0062] S9, after spray quenching, the profile is sent to an aging furnace for aging strengthening. In this embodiment, the internal aging strengthening temperature of the aging furnace is preferably 180° C., and the aging strengthening time is 4 hours.

[0063] See also Figures 3 to 17The present invention also provides a short-process manufacturing device for the space rolling bending of an automobile A-pillar, comprising a base plate 1, a fixed guide rail 2 fixedly arranged on the base plate 1 in sequence, a first-pass three-roller bending mechanism 3 and a first horizontal positioning mechanism 4, the two ends of the fixed guide rail 2 are respectively connected with the outlet of an extruder (not shown in the figure) and the inlet of the first-pass three-roller bending mechanism 3, a moving plate 41 is arranged at the positioning output end of the first horizontal positioning mechanism 4, a movable guide rail 6 and a second horizontal positioning mechanism 7 are respectively arranged on the movable plate 41, a second-pass three-roller bending mechanism 8 is arranged at the positioning output end of the second horizontal positioning mechanism 7, a rotating positioning mechanism 9 for driving the movable guide rail 6 to rotate and position is arranged at the bottom of the movable plate 41, a spraying mechanism (not shown in the figure) and a manipulator 10 are arranged on the side of the movable guide rail 6 away from the first-pass three-roller bending mechanism 3, and a rotary cutting mechanism 5 is arranged on the side of the movable guide rail 6 away from the manipulator. Among them, the extruder, spray mechanism and robot 10 all adopt existing equipment and are integrated into the manufacturing device as a whole. The specific structure and working principle are not described here. Only the specific structure and working principle of the innovative part of the present invention are described in detail below.

[0064] like Figure 8 As shown, in this embodiment, the fixed guide rail 2 is formed by two fixed guide rail halves that are relatively assembled. Shaping grooves are respectively arranged in the opposite sides of the two fixed guide rail halves. The cross-sectional shape of the shaping groove matches the left and right contour shapes of the cross-sectional shape of the profile extruded by the extruder, so that the profile with residual temperature can achieve a guiding effect of being fed forward in a straight line after being acted upon by the groove wall of the shaping groove, and at the same time, the surface of the profile can be smoothed and shaped by the groove wall of the shaping groove. The fixed guide rail 2 uses two fixed guide rail halves to facilitate the processing and surface repair of the shaping groove. A pad is arranged at the bottom of the fixed guide rail 2, and is fixed to the right end of the top surface of the first bracket 21 by screws. The two sides of the bottom of the first bracket 21 are respectively fixed to the right end of the top surface of the bottom plate 1 by screws.

[0065] like Figures 9 to 11As shown, the first pass three-roller bending mechanism 3 includes a fixed first roller frame 301 and a first hydraulic cylinder 302. Two vertically arranged first pressure rollers 303 are rotatably installed in the first roller frame 301. The power output end of the first hydraulic cylinder 302 is fixedly connected to a first pressure roller 304 that is slidably arranged in the first roller frame 301 and is vertically arranged. The axis of the first pressure roller 304 is equidistant from the axis of the two first pressure rollers 303. Specifically, the first pass three-roller bending mechanism 3 is fixedly arranged as a whole at the left end of the top surface of the first bracket 21. The first roller frame 301 is a "C"-shaped cross-section structure composed of an upper plate, a side plate and a lower plate. A pad is arranged at the bottom and is fixed to the top surface of the first bracket 21 by screws. Two sets of bearing mounting holes are symmetrically opened on the upper plate and the lower plate at positions close to the side plates. Rolling bearings are installed in the bearing mounting holes. The upper and lower shaft ends of the two first pressure rollers 303 are respectively assembled in the rolling bearings. The upper plate and the lower plate are provided with a set of stepped waist grooves at positions away from the side plates, the length direction of the waist grooves is perpendicular to the line connecting the centers of the two bearing holes and coincides with the midpoint of the line, and a rolling bearing is also provided in each waist groove, and the upper and lower shaft ends of the first pressure roller 304 are respectively installed in the rolling bearings, so that the two first pressure rollers 303 are symmetrically distributed on both sides of the first pressure roller 304, and the first pressure roller 304 can move linearly close to or away from the two first pressure rollers 303. A bearing cover is provided on the outside of each rolling bearing, and the bearing cover is fixed to the surface of the upper plate and the lower plate by screws.

[0066] The output shaft end of the first hydraulic cylinder 302 is fixedly connected with a "Y"-shaped push-pull frame 305, and the ends of the push-pull frame 305 are respectively sleeved on the two shaft ends of the first pressure roller 304. The first hydraulic cylinder 302 pushes the first pressure roller 304 to move horizontally through the push-pull frame 305. When the first pressure roller 304 is away from the two first pressure rollers 303, the profile sent from the fixed guide rail 1 can smoothly enter between the first pressure roller 303 and the first pressure roller 304 in a straight line; when the first pressure roller 304 is close to the two first pressure rollers 303, it can cooperate with the two first pressure rollers 303 to apply a rolling and forming force to the profile located therebetween, so that the profile completes the rolling process of the corresponding section while moving forward. The half-side cross-sectional profiles of the first pressure roller 304 and the first pressure roller 303 are matched with the cross-sectional profile shapes of the left and right sides of the profile, so that the surfaces of the first pressure roller 304 and the first pressure roller 303 maintain line contact with the surface of the profile, and the profile will not be offset during the relative rolling process. At the same time, vibrators (not shown in the figure) are respectively provided on the push-pull frame 305 and the first roller frame 301, so that the first pressure roller 304 and the two first pressure rollers 303 repeatedly vibrate the profile located between them, which can effectively suppress the residual stress of the extruded material and the rebound phenomenon after rolling and bending, so as to improve the forming accuracy and quality.

[0067] The first horizontal positioning mechanism 4 is arranged on the left side of the top surface of the base plate 1, and adopts a ball screw linear module driven by a servo motor, which is fixedly arranged on one side of the top surface of the base plate 1 along the extrusion direction of the profile, and a guide rail slider mechanism is arranged on the other side of the top surface of the base plate 1. One side edge of the movable plate 41 is fixed to the positioning output end of the linear module by screws, and the other side edge is fixed to the slider by screws. In this way, the first horizontal positioning mechanism 4 can realize the horizontal linear movement and precise positioning of the movable plate 41 and various functional components installed thereon at a constant speed. Preferably, the first auxiliary support platform 42 located outside the left end of the first horizontal positioning mechanism 4 is also fixedly arranged on both sides of the top surface of the base plate 1. When the movable plate 41 is positioned at the left end position of the first horizontal positioning mechanism 4, its left end suspension part is located on the top surface of the first auxiliary support platform 42, so as to ensure the stability of the movable plate 41 during the horizontal movement.

[0068] like Fig.12 As shown, the movable guide rail 6 includes a movable frame plate 601, a lifting cylinder 602 fixedly arranged on the side of the movable frame plate 601, a lifting plate 603 fixedly connected to the output end of the lifting cylinder 602 and located above the movable frame plate 601, and horizontal cylinders 604 fixedly arranged on both sides of the top surface of the lifting plate 603. The output ends of the two horizontal cylinders 604 are arranged opposite to each other and are respectively fixedly connected with movable guide rail half blocks 605. Specifically, the movable frame plate 601 is a gantry type, and a movable positioning plate 606 is fixedly connected to its bottom. A connecting column is integrally arranged at the bottom center of the movable positioning plate 606. A first arc-shaped guide groove 411 is opened on the movable plate 41. The bottom surface of the movable positioning plate 606 is slidably fitted with the top surface of the movable plate 41. The connecting column is located in the first arc-shaped guide groove 411, and the outer wall of the connecting column is in sliding contact with the inner wall of the first arc-shaped guide groove 411. The two lifting cylinders 602 are respectively fixedly mounted on the inner side walls of the movable frame plate 601, and their output shafts vertically penetrate the top wall plate upward. The inner side walls of the two movable guide rail halves 605 are provided with clamping grooves, and the cross-sectional shape of the clamping grooves matches the side profile shapes of the cross-sectional shape of the profile. When the two horizontal cylinders 604 drive the two movable guide rail halves 605 away from each other, after the front straight section of the profile passes through the first three-roller bending mechanism 3, its end can smoothly enter between the two movable guide rail halves 605, and then the two horizontal cylinders 604 drive the two movable guide rail halves 605 to approach each other, and the two movable guide rail halves 605 clamp the end of the profile, so that the front straight section of the profile is movable in the length direction and constrained perpendicular to the length direction.

[0069] like Fig.13As shown, the rotation positioning mechanism 9 includes a first motor frame 901 fixedly arranged on the bottom surface of the moving plate 41, a rotation driving motor 902 fixedly installed on the first motor frame 901, a driving gear 903 fixedly arranged on the output shaft end of the rotation driving motor 902, and an incomplete driven gear 904 slidably connected to the bottom of the moving plate 41 and meshing with the driving gear 903, and the end of the incomplete driven gear 904 is fixedly connected to the bottom of the connecting column. Among them, the driving gear 903 and the incomplete driven gear 904 are in an internal meshing transmission mode to make the structure more compact; the central rotation axis of the incomplete driven gear 904 is located at the radius center point of the horizontal rolling section of the profile. The two ends of the top surface of the incomplete driven gear 904 are respectively fixedly connected with pins, and two sets of second arc-shaped guide grooves 412 are opened on the movable plate 41. The top surface of the incomplete driven gear 904 is slidably fitted with the bottom surface of the movable plate 41, and the pin is located in the second arc-shaped guide groove 412. The top cap of the pin is located on the top surface of the movable plate 41, so that the incomplete driven gear 904 is hung below the movable plate 41.

[0070] The axes of the first arc guide groove 411 and the second arc guide groove 412 are both coincident with the central rotation axis of the incomplete driven gear 904, so that the rotating rod driving motor 902 can drive the incomplete driven gear 904 to swing left and right through the driving gear 903, thereby realizing the switching of the two movable guide rail half blocks 605 on the movable guide rail 6 between the exit side of the first pass three-roller bending mechanism 3 and the entrance side of the second pass three-roller bending mechanism 8. During the horizontal rolling of the second section of the profile, the movable guide rail 6 moves horizontally synchronously with the end of the profile, accurately positioning the end of the profile from the exit side of the first pass three-roller bending mechanism 3 to the entrance side of the second pass three-roller bending mechanism 8, and further assisting the first pass three-roller bending mechanism 3 to achieve the accuracy of the horizontal rolling angle of the profile.

[0071] The second horizontal positioning mechanism 7 is arranged above the top surface of the bottom plate 1, and includes a guide plate 701 and a synchronous conveyor belt mechanism 702 arranged on the guide plate 701. The guide plate 701 is arranged along the length direction after the front straight section of the middle section of the profile is rotated and translated after the horizontal rolling is completed. The top two ends of the guide plate 701 are fixed on the movable plate 41 through two second brackets 705 of the gantry structure. A guide groove 703 is provided in the guide plate 701. The front section of the guide groove 703 is consistent with the direction of the front straight section of the profile, and the rear section is consistent with the direction of the horizontal rolling section in the middle of the profile, that is, the front section is a straight line and the rear section is an arc. The top end of the second pass three-roller bending mechanism 8 movably passes through the guide groove 703 and is fixedly connected to the front side of the synchronous belt of the synchronous conveyor belt mechanism 702, so that the synchronous conveyor belt mechanism 702 can drive the second pass three-roller bending mechanism 8 to move horizontally along the guide groove at a constant speed and move horizontally and linearly and accurately position. The second pass three-roller bending mechanism 8 completes the biting process of the end of the profile during the horizontal movement, and completes the vertical rolling of the front straight section and part of the middle horizontal bending section of the profile during the relative rolling process with the profile.

[0072] like Figures 14 to 16 As shown, the second-pass three-roller bending mechanism 8 includes a fixed hanging plate 801, a second roller frame 802 rotatably connected to the bottom of the hanging plate 801, and a second hydraulic cylinder 803 arranged on the two outer walls of the second roller frame 802, two horizontally arranged second pressure rollers 804 are rotatably installed in the second roller frame 802, and the power output end of the second hydraulic cylinder 803 is fixedly connected to a second pressure roller 805 slidably arranged in the second roller frame 802 and arranged horizontally, and the axis of the second pressure roller 805 is equidistant from the axis of the two second pressure rollers 804.

[0073] Specifically, the second roller frame 802 is an inverted "U" cross-section structure consisting of a left side plate, an upper top plate and a right side plate. Two groups of bearing mounting holes are symmetrically opened at the bottom end of the left side plate and the right side plate, and rolling bearings are installed in the bearing mounting holes. A bearing cover is arranged on the outside of each rolling bearing, and the bearing cover is fixed to the surface of the left side plate and the right side plate by screws. The left and right shaft ends of the two second pressure rollers 804 are respectively assembled in the rolling bearings. A group of stepped waist grooves are opened at the top position of the left side plate and the right side plate, and the length direction of the waist groove is perpendicular to the center line of the two bearing holes and coincides with the midpoint of the line. A rolling bearing is also arranged in each waist groove. The left and right shaft ends of the second pressure roller 805 are respectively installed in the rolling bearings, so that the two second pressure rollers 804 are symmetrically distributed on both sides of the second pressure roller 805, and the second pressure roller 805 can move linearly to approach or move away from the two second pressure rollers 804.

[0074] The second hydraulic cylinder 803 is an earring-connected hydraulic cylinder, and there are two of them, which are symmetrically distributed on the outside of the left and right plates of the second roller frame 802. The bottom ends of the left and right plates of the second roller frame 802 are fixed with fixed pins located just below the waist-shaped groove. The top output shaft end of the second hydraulic cylinder 803 is sleeved on the left and right shaft ends of the second pressure roller 805, and the bottom end of the cylinder body of the second hydraulic cylinder 803 is sleeved on the fixed pin, so that under the action of the two second hydraulic cylinders 803, the second pressure roller 805 can only move vertically along the direction of the waist-shaped groove. When the second pressure roller 805 is away from the two second pressure rollers 804, the end of the profile after horizontal rolling of the middle section can smoothly enter between the second pressure roller 805 and the second pressure roller 804; when the second pressure roller 805 is close to the two second pressure rollers 804, it can cooperate with the two second pressure rollers 804 to apply rolling and forming force to the profile located therebetween. During the process of the second horizontal positioning mechanism 7 driving the second three-roller bending mechanism 8 to move horizontally, the second pressure roller 805 and the two second pressure rollers 804 complete the vertical rolling process of the corresponding section of the profile in the process of rolling relative to the profile. The half-side cross-sectional profiles of the second pressure roller 805 and the second pressure roller 804 are matched with the cross-sectional profile shapes of the upper and lower sides of the profile, respectively, so that the surfaces of the second pressure roller 805 and the second pressure roller 804 maintain line contact with the surface of the profile, and the profile will not be offset in the relative rolling process. At the same time, a vibrator (not shown in the figure) is arranged on the second roller frame 802, so that the second pressure roller 805 and the two second pressure rollers 804 can repeatedly vibrate the profile located therebetween, which can effectively suppress the rebound phenomenon after rolling bending to improve the forming accuracy and quality.

[0075] Connecting rods 808 are fixedly arranged on both sides of the top surface of the hoisting plate 801, and the connecting rods 808 are movably arranged in the guide groove 703, and the top ends of the connecting rods 808 are fixedly connected to the front side of the synchronous belt of the synchronous conveyor belt mechanism 702 by screws. Preferably, auxiliary guide rods 704 located below the guide groove 703 are fixedly arranged on the front and rear sides of the bottom of the guide plate 701, and the axes of the two auxiliary guide rods 704 are equidistant and parallel to the axes of the guide groove 703. A guide wheel frame 809 located between the two connecting rods 808 is fixedly arranged on the top surface of the hoisting plate 801, and two sets of guide wheel groups 8010 are rotatably arranged inside the left and right sides of the top of the guide wheel frame 809, and the two sets of guide wheel groups 8010 are respectively rollingly clamped on the outer sides of the two auxiliary guide rods 704, so as to further ensure that the second pass three-roller bending mechanism 8 remains stable and turns smoothly during the moving process.

[0076] A bearing installation groove is provided at the center of the top surface of the hanging plate 801, and a thrust bearing 806 is embedded in the bearing installation groove. A top rotating shaft 807 is threadedly connected to the center of the top surface of the second roller frame 802. The top rotating shaft 807 is sleeved in the inner ring of the thrust bearing 806 and the top end is placed on the top surface of the inner ring, so that the second roller frame 802 and each component thereon can rotate freely around the vertical axis. In this way, when the second roller frame 802 performs vertical roll bending on the profile located inside it, especially when the straight section switches to the arc section and when the arc section turns, the second pressure roller 805 and the two second pressure rollers 804 in the second roller frame 802 can automatically adjust the direction to adapt to the path of the profile. For this reason, the second pressure roller 805 and the two second pressure rollers 804 are in contact with the upper and lower side surfaces of the profile. There is a gap for adaptation in the horizontal direction (roller axial direction).

[0077] Preferably, Fig.17 As shown, the bottom surface of the hanging plate 801 is provided with a sleeve 8011 located outside the top rotating shaft 807 of the second roller frame 802, the side wall of the sleeve 8011 is provided with a notch, a positioning baffle 8012 is provided in the notch, a hanging ear 8013 located in the notch is fixedly provided outside the top rotating shaft 807, and a tension spring 8014 is connected between the hanging ear 8013 and one side wall of the notch. In this way, after the second roller frame 802 rotates relative to the hanging plate 801 following the change of the profile path, the tension spring 8014 is stretched, and when the profile is separated from the second pressure roller 805 and the two second pressure rollers 804, the tension spring 8014 pulls the top rotating shaft 807 to rotate in the opposite direction, and the positioning baffle 8012 blocks and achieves accurate reset.

[0078] A cantilever plate is provided at the front right end of the movable plate 41, and the peeling mechanism 5 is fixedly provided at the right end of the top surface of the cantilever plate. Preferably, a second auxiliary support platform 43 located outside the right end of the first horizontal positioning mechanism 4 is also fixedly provided on the top surface of the bottom plate 1. During the horizontal movement of the movable plate 41 driven by the first horizontal positioning mechanism 4, the cantilever plate at the right end of the movable plate 41 is always overlapped on the top surface of the second auxiliary support platform 43, ensuring the stability of the movable plate 41 during the horizontal movement process and the stable operation of the peeling mechanism 5.

[0079] like Fig.18As shown, the peeling mechanism 5 includes a reducer 501, a peeling positioning motor 502 fixedly arranged at the input end of the reducer 501, a support cylinder 503 fixedly arranged at the output end of the reducer 501, a support seat 504 rotatably arranged on the top of the support cylinder 503, a fixed frame 505 fixedly connected to the top of the support seat 504, a swing frame 506 transferred to the top of the fixed frame 505, a peeling drive motor 507 fixedly arranged above the transfer end of the swing frame 506, and a peeling blade 508 rotatably installed at the end of the swing frame 506. The middle part of the swing frame 506 is connected to the middle part of the fixed frame 505 by a swing hydraulic cylinder 509, and the shaft end of the peeling blade 508 is connected to the output shaft end of the peeling drive motor 507 by a belt transmission mechanism 5010.

[0080] Specifically, a thrust bearing is embedded in the top of the support cylinder 503, and a connecting shaft is fixedly provided on the bottom surface of the support seat 504. The connecting shaft is sleeved in the thrust bearing and the bottom end is transmission-connected to the output end of the reducer 501. When the rotary cutting positioning motor 502 is working, the support seat 504 can be driven to rotate horizontally around the vertical axis through the transmission of the reducer 501, so as to realize the circumferential positioning of the support seat 504 and its upper components, and realize the precise positioning of the projection position of the cutting position of the rotary cutting blade 508 in the horizontal plane. The swing hydraulic cylinder 509 adopts an earring connection type hydraulic cylinder, and the two ends of the hydraulic cylinder are respectively sleeved with shaft rods, and the shaft ends are respectively fixedly connected to the middle part of the swing frame 506 and the middle part of the fixed frame 505. The swing frame 506 is driven to swing up and down by the swing hydraulic cylinder 509, so as to realize the rotary cutting blade 508 approaching the profile to complete the cutting process and lifting and resetting after the cutting is completed.

[0081] The manipulator 10 adopts an existing multi-degree-of-freedom industrial robot, and a pneumatic gripper is set at the execution end. The pneumatic gripper grabs and clamps the cut formed part, and transfers it to the side position of the device (such as the front side of the moving plate 41) and releases it to the working position of the spray mechanism, and then the spray mechanism sprays the formed part to quench the formed part. After the quenching treatment, it is sent to the aging furnace through a transfer mechanism (such as a conveyor belt) for aging strengthening treatment.

[0082] See also Figures 3 to 7 , the specific working process of this device is as follows:

[0083] (1) The extruder continuously extrude the profile. The first hydraulic cylinder 302 drives the first pressure roller 304 away from the two first pressure rollers 303. The profile exits the fixed guide rail 2 and enters the first three-roller bending mechanism 3. The two horizontal cylinders 604 drive the two movable guide rail halves 605 away from each other. After the profile passes through the corresponding front straight section, it is ready to be horizontally rolled for the subsequent extrusion section. At this time, the profile is located between the two movable guide rail halves 605. The two horizontal cylinders 604 drive the two movable guide rail halves 605 to move closer to each other to clamp the end of the profile. The state is as follows: Figure 3 shown.

[0084] (2) The first hydraulic cylinder 302 drives the first pressure roller 304 to approach the two first pressure rollers 303 and position it at the rolling working position. The profile continues to move forward for a distance. During the movement, the first pressure roller 304 and the two first pressure rollers 303 horizontally bend the profile inside it; at the same time, the rotating positioning mechanism 9 drives the movable guide rail 6 to move horizontally synchronously with the end of the profile. The front straight section of the profile can automatically adjust its position in the longitudinal direction in the movable guide rail 6. When the middle section of the profile completes the horizontal bending, the movable guide rail 6 is just located at the inlet side of the second three-roller bending mechanism 8. The state is as follows: Figure 4 shown.

[0085] (3) The second hydraulic cylinder 803 drives the second pressure roller 805 away from the two second pressure rollers 804, and the second horizontal positioning mechanism 7 drives the second three-roller bending mechanism 8 to move horizontally and approach the profile, so that the end of the profile is located between the second pressure roller 805 and the two second pressure rollers 804. Then the second hydraulic cylinder 803 drives the second pressure roller 805 to approach the two second pressure rollers 804 and position it at the rolling working position. Then the second horizontal positioning mechanism 7 drives the second three-roller bending mechanism 8 to move horizontally, continuously completing the vertical rolling of the entire length of the front straight section of the profile and the vertical rolling of part of the length of the middle horizontal rolling section. The state is as follows: Figure 5 shown.

[0086] (4) During the above-mentioned vertical rolling process, the first hydraulic cylinder 302 drives the first pressure roller 304 away from the two first pressure rollers 303 and resets, and the profile continues to complete the extrusion of the rear end straight section and passes straight through the fixed guide rail 2 and the first three-roller bending mechanism 3; the first horizontal positioning mechanism 4 drives the movable plate 41 to move horizontally at a speed equal to the speed of the profile extrusion forward, so that the vertical rolling process and the subsequent extrusion of the profile can be carried out synchronously without suspending the extruder equipment; at the same time, the two horizontal cylinders 604 drive the two movable guide rail halves 605 away from each other to release the profile, and the two lifting cylinders 602 drive the lifting plate 603 to descend, so that the two movable guide rail halves 605 are located below the profile, and the rotating positioning mechanism 9 drives the movable guide rail 6 to rotate horizontally in the opposite direction and reset, so that the two movable guide rail halves 605 are located at the outlet side of the first three-roller bending mechanism 3 again, and the two lifting cylinders 602 drive the lifting plate 603 to rise and reset, and the state is as follows Figure 6 shown.

[0087] (5) After the second pass three-roller bending mechanism 8 completes the vertical rolling process, the movable plate 41 moves horizontally to the leftmost end. Since the movable plate 41 and its various functional components move synchronously with the basic forward movement of the profile, the rear end straight section of the formed part and the front end straight section of the next formed part are continuously extruded, and the hinge is located at the working position of the peeling mechanism 5, which is relatively unchanged with the peeling mechanism 5. The peeling drive motor 507 works to drive the peeling blade 508 to rotate at a high speed, and the swing hydraulic cylinder 509 drives the swing frame 506 to swing downward, so that the peeling blade 508 contacts the profile and performs a vertical cutting operation to obtain the end shape of the previous formed part. In this process, the swing hydraulic cylinder 509 provides the downward pressure feed force for cutting. Then the swing hydraulic cylinder 509 drives the swing frame 506 to swing upward, so that the peeling blade 508 is lifted and separated from the profile, and the peeling positioning motor 502 works to drive the support seat 504 to rotate clockwise to a preset angle, and then the swing hydraulic cylinder 509 drives the swing frame 506 to swing downward again, so that the peeling blade 508 cuts the profile again to obtain the front end shape of the next formed part. After the cutting operation is completed, the peeling mechanism 5 is reset and stopped working, and the state is as follows Figure 7 shown.

[0088] (6) The pneumatic gripper of the manipulator 10 grabs and clamps the cut formed piece, the second hydraulic cylinder 803 drives the second pressure roller 805 away from the two second pressure rollers 804, and the manipulator 10 transfers the formed piece to the side position of the device (such as the front side of the movable plate 41) and releases it to the working position of the spray mechanism, and then the spray mechanism sprays the formed piece to quench the formed piece. After the quenching treatment, it is then sent to the aging furnace through a transfer mechanism (such as a conveyor belt) for aging strengthening treatment.

[0089] Afterwards, the second horizontal positioning mechanism 7 drives the second pass three-roller bending mechanism 8 to move horizontally and reset, and the first horizontal positioning mechanism 4 drives the movable plate 41 and the functional components thereon to move horizontally in the opposite direction and reset, and during the reset process, the front end of the next formed piece enters the movable guide rail 6. In this way, the aforementioned process can be repeated to continue to complete the roll bending process of the next formed piece.

[0090] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A short-process manufacturing device for space rolling bending of automobile A-pillars, characterized in that: It includes a bottom plate, a fixed guide rail fixedly arranged on the bottom plate in sequence, a first pass three-roller bending mechanism and a first horizontal positioning mechanism, the two ends of the fixed guide rail are respectively connected with the outlet of the extruder and the inlet of the first pass three-roller bending mechanism, a moving plate is arranged at the positioning output end of the first horizontal positioning mechanism, a movable guide rail and a second horizontal positioning mechanism are respectively arranged on the moving plate, a second pass three-roller bending mechanism is arranged at the positioning output end of the second horizontal positioning mechanism, a rotating positioning mechanism for driving the movable guide rail to rotate and position is arranged at the bottom of the moving plate, a spraying mechanism and a manipulator are arranged on one side of the second horizontal positioning mechanism, and a rotary cutting mechanism is arranged on the side of the movable guide rail away from the manipulator; The extruder continuously extrudes the profile, and the profile enters the first three-roller bending mechanism through the fixed guide rail. After passing through the preset length, the end is clamped in the movable guide rail. The first three-roller bending mechanism horizontally bends the profile to the preset length, and the rotating positioning mechanism drives the movable guide rail to follow the end of the profile to move synchronously to the inlet side of the first three-roller bending mechanism. The subsequent extruded profile passes through the first three-roller bending mechanism straight to the preset length, and the first horizontal positioning mechanism drives the moving plate to move synchronously with the profile. During this process, the rotating positioning mechanism drives the movable guide rail to reset, and the second three-roller bending mechanism vertically rolls the profile to the preset length. The rotary cutting mechanism cuts the end of the profile, and the robot transfers the cut profile to the bottom of the spraying mechanism for spraying.

2. The short-process manufacturing device for the space rolling bending of the automobile A-pillar according to claim 1 is characterized in that: The first-pass three-roller bending mechanism includes a fixed first roller frame and a first hydraulic cylinder. Two vertically arranged first pressure rollers are rotatably installed in the first roller frame. The power output end of the first hydraulic cylinder is fixedly connected to a first pressure roller that is slidably arranged in the first roller frame and is vertically arranged. The axis of the first pressure roller is equidistant from the axis of the two first pressure rollers.

3. The short-process manufacturing device for the space rolling bending of the automobile A-pillar according to claim 1 is characterized in that: The movable guide rail includes a movable frame, a lifting cylinder fixedly arranged on the side of the movable frame, a lifting plate fixedly connected to the output end of the lifting cylinder and located above the movable frame, and horizontal cylinders fixedly arranged on both sides of the top surface of the lifting plate. The output ends of the two horizontal cylinders are arranged opposite to each other and are respectively fixedly connected with half pieces of the movable guide rail.

4. The short-process manufacturing device for the space rolling bending of the automobile A-pillar according to claim 3 is characterized in that: The rotation positioning mechanism includes a first motor frame fixedly arranged on the bottom surface of the movable plate, a rotation driving motor fixedly installed on the first motor frame, a driving gear fixedly arranged on the output shaft end of the rotation driving motor, and an incomplete driven gear slidably connected to the bottom of the movable plate and meshing with the driving gear, and the end of the incomplete driven gear is fixedly connected to the bottom of the movable frame plate.

5. The short-process manufacturing device for spatial rolling bending of an automobile A-pillar according to any one of claims 1 to 4, characterized in that: The second-pass three-roller bending mechanism includes a fixedly installed lifting plate, a second roller frame rotatably connected to the bottom of the lifting plate, and a second hydraulic cylinder arranged on the two outer side walls of the second roller frame, two horizontally arranged second pressure rollers are rotatably installed in the second roller frame, and the power output end of the second hydraulic cylinder is fixedly connected to a second pressure roller slidably arranged in the second roller frame and arranged horizontally, and the axis of the second pressure roller is equidistant from the axis of the two second pressure rollers.

6. The short-process manufacturing device for the space rolling bending of the automobile A-pillar according to claim 5 is characterized in that: The bottom surface of the lifting plate is provided with a sleeve located outside the top rotating shaft of the second roller frame, the side wall of the sleeve is provided with a notch, a positioning baffle is provided in the notch, and a hanging ear located in the notch is fixedly provided on the outside of the top rotating shaft of the second roller frame, and a tension spring is connected between the hanging ear and one side wall of the notch.

7. A short-process manufacturing process for space rolling bending of an automobile A-pillar, applied to the short-process manufacturing device for space rolling bending of an automobile A-pillar according to any one of claims 1 to 6, comprising the following steps: The extruder continuously extrude the profile; the vibration mechanism applies vibration force to each three-roller bending mechanism; the pressure roller in each three-roller bending mechanism is away from the corresponding pressure roller; the extruded profile is fed forward along the fixed guide rail and penetrates between the pressure roller and the pressure roller of the first three-roller bending mechanism; the profile is fed forward by a preset length, and the end is inserted into the movable guide rail. The pressure roller of the first three-roller bending mechanism approaches the pressure roller and is positioned at a preset position, and the profile continues to be fed forward to complete the horizontal bending of the middle section; the movable guide rail clamps the end of the profile and moves synchronously. After the horizontal bending of the middle section of the profile is completed, the movable guide rail transfers the front end of the profile to the side of the entrance of the second three-roller bending mechanism. The second three-roller bending mechanism moves horizontally to allow the end of the profile to enter between the pressure roller and the pressure roller; the pressure roller of the first three-roller bending mechanism is reset again, and the subsequent extruded profile passes straight; the front end of the profile enters the second three-roller bending mechanism, and completes the vertical rolling of the front straight line section and part of the middle horizontal bending section of the profile during relative rolling; After the vertical bending is completed, the peeling device cuts off the tail end of the profile from the subsequently extruded profile, and the cut profile is spray quenched. The pressure roller of the second three-roller bending mechanism is reset again, and the unloading device unloads the profile; the profile after spray quenching is sent to the aging furnace for aging strengthening treatment.

8. The short-process manufacturing process for spatial rolling bending of an automobile A-pillar according to claim 7 is characterized in that: The waste heat temperature of the extruded profile is 200℃~400℃.

9. The automotive A-pillar space rolling short-process manufacturing process according to claim 7 is characterized in that: After the vibration force is applied, the amplitude of the pressure roller is 0.5 mm and the frequency is 40 Hz, and the amplitude of the two pressure rollers is 0.2 mm and the frequency is 20 Hz.

10. The short-process manufacturing process for spatial rolling bending of an automobile A-pillar according to claim 7 is characterized in that: The internal aging strengthening temperature of the aging furnace is 180°C, and the aging strengthening time is 4 hours.

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