A bending device for chassis production and processing

Abstract

The application discloses a bending device for machine case production and processing, which comprises a processing table, a bending pressing plate, a lifting driving part, an electric control telescopic rod, a forming side baffle, a follow-up buffer pressing and pasting assembly, a segmented pre-pressing overturn supporting assembly and a gradual lateral pressing assembly. The lifting driving part drives the bending pressing plate to move downward through a lifting pressing rod, the electric control telescopic rod drives the bending pressing plate to move and rotate through an oblique traction rod and a lateral movable seat, so that the machine case plate is bent. The follow-up buffer pressing and pasting assembly performs follow-up pressing and pasting on the plate in the bending process through a trigger swing arm, a follow-up overturning block, a buffer pressing rod and a floating pressing and pasting plate; the segmented pre-pressing overturn supporting assembly first performs multi-point pre-pressing through a floating pressing needle, and then performs overturn supporting through a half-width supporting plate; and the gradual lateral pressing assembly gradually presses against the side surface of the plate through a pressing swing rod and a gradual pressing block. The application can reduce the warping, rebound, sliding and local deformation of the machine case plate in the bending process, and improve the bending angle consistency and forming quality.

Description

Technical Field

[0001] This invention relates to the field of sheet metal bending technology, specifically a bending device for chassis manufacturing. Background Technology

[0002] Chassis are typically formed from sheet metal through cutting, punching, bending, welding, or assembly. Side walls, flanges, and reinforcing edges require shaping using bending equipment. Compared to smaller workpieces like wires and electronic component leads, chassis panels are characterized by large area, thin thickness, long edges, and dispersed stress areas. During bending, problems such as localized warping, edge springback, uneven side stress, inconsistent forming angles, and surface damage can easily occur. Therefore, the bending equipment needs to simultaneously perform positioning, pressing, support, and anti-springback treatment during the bending process.

[0003] Existing bending devices, such as the invention patent with authorization announcement number CN110883264B entitled "A Bending Device," mainly disclose a material guide track, a bending mechanism, and a pressing mechanism. The material guide trough guides the component strip, and the bending element cooperates with the bending abutment plate to complete the bending of the component leads. Then, the pressing mechanism presses down on the bent component. This solution is suitable for online bending of component strips, and its key features are strip limiting, bending position control, and pressing correction.

[0004] However, the aforementioned structure is mainly designed for continuously fed component strips, where the workpiece size is small and the bending area is concentrated. It cannot directly address the problems of wide panels, long bending edges, and the tendency for the sheet metal to warp or shift during bending due to the movement of the pressure head. Especially when the sides of the chassis panel are formed by the bending pressure plate, without a follow-up pressing structure, the side of the panel may spring back; without a segmented pre-pressing and flipping support structure, the bottom support of the panel is insufficient, easily causing uneven deformation near the bending line; without a progressive lateral pressing structure, the panel is prone to localized bulging or lateral slippage under stress. Therefore, it is necessary to propose a bending device suitable for chassis manufacturing, capable of simultaneously completing pressing, support, and anti-springback processing through multiple sets of linked components, in addition to the main bending action. Summary of the Invention

[0005] The purpose of this invention is to provide a bending device for chassis manufacturing and processing, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a bending device for chassis manufacturing and processing, comprising a processing table, protective mesh plates on both sides of the top of the processing table, electrically controlled telescopic rods on both sides inside the processing table, guide slots on both sides of the top of the processing table, an inclined traction rod inserted obliquely through the guide slot, a lateral movable seat at one end of the inclined traction rod, and a bending pressure plate on one side of the lateral movable seat; A lifting drive component is provided directly above the top of the processing table. A lifting pressure rod is provided at the bottom of the lifting drive component. A guide frame is provided on the outside of the lifting drive component. A lifting mounting frame is provided outside the guide frame. The bottom of the lifting pressure rod is connected to the bending pressure plate. A forming side baffle is provided on one side of the bending pressure plate, and a follow-up buffer pressing component is provided on the forming side baffle. The follow-up buffer pressing component is used to follow up and press the surface of the bent chassis panel when the bending pressure plate moves the forming side baffle. A segmented pre-compression flip-over support assembly is provided between the bending pressure plate and the follow-up buffer pressing assembly. The segmented pre-compression flip-over support assembly is used to first perform local pre-compression on the chassis panel during the bending pressure plate pressing process, and then flip-over support the bottom of the chassis panel. The follow-up buffer pressing assembly is also provided with a progressive lateral pressing assembly, which is used to gradually press against the side surface of the bent chassis panel as the follow-up buffer pressing assembly rotates.

[0007] Furthermore, the lower ends of the protective mesh plates on both sides of the top of the processing table are provided with bottom hinge seats, and a flip support mesh plate is provided on one side of the bottom hinge seat. The front and rear ends of the bending pressure plate are provided with steering heads, the inner side of the steering head is provided with a lateral support telescopic member, and the bottom of the lateral support telescopic member is provided with a support foot.

[0008] Furthermore, the lifting drive component is any one of a pneumatic cylinder, an electric cylinder, or a hydraulic cylinder. The guide frame surrounds the outside of the lifting drive component. The lifting pressure rod vertically penetrates the lifting mounting frame and is connected to the bending pressure plate, so that the bending pressure plate can vertically fold the chassis panel under the drive of the lifting drive component.

[0009] Furthermore, the follow-up buffer pressing assembly includes follow-up flipping blocks disposed at the upper and lower ends of the front side of the molding side baffle. The follow-up flipping blocks only contact the surface of the molding side baffle. A first rotating shaft is disposed through the inner side of the follow-up flipping block, and the first rotating shaft and the follow-up flipping block form a rotating structure. A buffer pressure rod is also disposed vertically through the inner side of the follow-up flipping block. A transition pressure cap is disposed at the top of the buffer pressure rod. An adapter spring is sleeved on the outside of the buffer pressure rod. A floating pressing plate is disposed at the bottom of the buffer pressure rod.

[0010] Furthermore, a trigger swing arm is sleeved on the front side of the first rotating shaft, and a second rotating shaft is provided through the bottom of the trigger swing arm. An adapter frame is provided on the outside of the second rotating shaft, and the adapter frame is fixedly connected to the surface of the forming side baffle. When the electric telescopic rod drives the lateral movable seat to move, the lateral movable seat drives the bending pressure plate to move and rotate. The forming side baffle moves with the bending pressure plate and drives the adapter frame to move. The adapter frame drives the trigger swing arm to rotate through the second rotating shaft. The trigger swing arm drives the follow-up flipping block to leave the surface of the forming side baffle, and causes the buffer pressure rod to drive the floating pressing plate to contact the surface of the bent chassis panel.

[0011] Furthermore, the floating pressing plate is provided with guide posts at equal intervals on its top, and the top of the guide posts is provided with limit caps. A first return spring is sleeved on the outside of the limit caps. The bending pressing plate is sleeved on the outside of the guide posts. The first return spring is used to drive the bending pressing plate to return to its original position relative to the floating pressing plate after the bending pressing plate loses its downward pressure. The limit caps are used to limit the excessive movement of the bending pressing plate outside the guide posts.

[0012] Furthermore, a horizontal shaft is provided on one side of the top of the floating pressing plate, and bearing sleeves are fitted at both ends of the horizontal shaft. Rotating sleeves are equidistantly fitted on the outside of the bearing sleeves. A connecting arm is provided at one end of the rotating sleeve, and a half-width support plate is provided on one side of the connecting arm. The length of the half-width support plate is equal to half the length of the bending pressing plate. A vertical sliding hole is opened on the inner side of the half-width support plate, and floating pressure needles are vertically inserted through the inner side of the vertical sliding hole at equal intervals to one side. A limit ring is provided at the upper end of the floating pressure needle, and a second return spring is provided at the bottom of the floating pressure needle.

[0013] Furthermore, the bent chassis panel is placed at the bottom of the half-width support plate. When the bending pressure plate moves down, it first squeezes the floating pressure needle. After being stressed, the floating pressure needle moves down in the vertical sliding hole and squeezes the top of the chassis panel. The limiting ring is used to prevent the floating pressure needle from moving down too much, and the second return spring is used to reset the floating pressure needle after it loses its downward pressure. When the limiting ring abuts against the inner wall of the vertical sliding hole, the half-width support plate is stressed and drives the rotating sleeve to rotate around the horizontal axis through the connecting arm, so that the half-width support plate flips and supports the bottom of the chassis panel.

[0014] Furthermore, the progressive lateral pressure assembly includes a pressure swing rod disposed at the lower end of the trigger swing arm. One end of the pressure swing rod is provided with a progressive pressure block. When the trigger swing arm rotates, the trigger swing arm drives the pressure swing rod to rotate, and the pressure swing rod drives the progressive pressure block to gradually press against the side surface of the bent chassis panel.

[0015] Furthermore, the follow-up buffer pressing component, the segmented pre-pressing flipping support component, and the progressive lateral pressing component are respectively arranged in pairs at the front and rear ends of the bending pressure plate, so that the chassis panel is subjected to synchronous follow-up pressing force, bottom support force and lateral pressing force during the bending process, thereby limiting the warping, slippage and rebound of the chassis panel during the bending process.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through the cooperation of a forming side baffle, a follow-up flipping block, a first rotating shaft, a buffer pressure rod, a transition pressure cap, an adapter spring, a trigger swing arm, and a floating pressing plate, enables the floating pressing plate to promptly press against the surface of the panel as the bending pressure plate moves to drive the chassis panel during bending. Compared to simply relying on the pressure head to press down, this structure can follow up and restrict the panel when it tends to separate from the surface, reducing edge springback, side warping, and local offset.

[0017] 2. This invention, through the cooperation of guide posts, limit caps, a first return spring, a horizontal shaft, a bearing sleeve, a rotating sleeve, a connecting arm, a half-width support plate, a vertical sliding hole, a floating pressure pin, a limit ring, and a second return spring, ensures that when the bending pressure plate is pressed down, the floating pressure pin first applies multi-point pre-pressure to the chassis plate, and then the half-width support plate provides delayed flipping support. This structure avoids the plate being subjected to instantaneous hard pressure, which could cause localized indentation, resulting in more uniform bending force and a more stable bending line.

[0018] 3. This invention utilizes the linkage of a trigger swing arm, a pressing swing rod, and a progressive pressing block. During the rotation of the trigger swing arm, the progressive pressing block gradually contacts and presses against the side surface of the bent chassis panel, gradually building up the lateral force on the panel. This method avoids scratches on the panel surface caused by a single rigid pressing action, while also limiting lateral slippage, edge bulging, and loosening of the angle after bending, thus improving the flatness and stability of the chassis panel after bending. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the bending device for chassis manufacturing of the present invention; Figure 2 This is a schematic diagram showing the installation state of the bottom of the processing table and the electrically controlled telescopic rod of the present invention; Figure 3 This is a schematic diagram of the lifting drive component, bending pressure plate, and lateral movable seat of the present invention; Figure 4 This is a schematic diagram of the cooperative structure of the lifting pressure bar, guide frame, forming side baffle and bending pressure plate of the present invention; Figure 5 for Figure 4 A partially enlarged structural diagram of the follow-up buffer pressing component and the progressive lateral pressing component at point A; Figure 6This is a schematic diagram of the cooperation structure between the segmented pre-compression flipping support component and the bending pressure plate of the present invention; Figure 7 for Figure 6 A partially enlarged structural diagram of the half-width support plate, horizontal shaft, rotating sleeve, and connecting arm at point B in the middle; Figure 8 This is a schematic diagram of the assembly structure of the floating pressure plate, guide post, limit cap, and first reset spring of the present invention. Figure 9 This is a schematic diagram of the assembly structure of the floating pressure needle, the limiting ring, the vertical sliding hole, and the second reset spring of the present invention.

[0020] In the diagram: 1. Processing table; 2. Protective mesh plate; 3. Angled traction rod; 4. Lateral movable seat; 5. Lifting mounting frame; 6. Lifting drive component; 7. Guide frame; 8. Tilting support mesh plate; 9. Bottom hinge seat; 10. Guide slot; 11. Support foot; 12. Electrically controlled telescopic rod; 13. Forming side baffle; 14. Bending pressure plate; 15. Lifting pressure rod; 16. Steering head; 17. Lateral support telescopic component; 18. First return spring; 9. Progressive pressing block; 20. Pressing swing arm; 21. Triggering swing arm; 22. First rotating shaft; 23. Follow-up flipping block; 24. Transition pressure cap; 25. Buffer pressure rod; 26. Limiting cap; 27. Guide post; 28. Floating pressing plate; 29. ​​Half-width support plate; 30. Vertical sliding hole; 31. Second return spring; 32. Limiting ring; 33. Floating pressure needle; 34. Rotating sleeve; 35. Connecting arm; 36. Horizontal shaft; 37. Bearing sleeve. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example:

[0023] like Figures 1 to 9As shown, this invention provides a bending device for chassis manufacturing, including a processing table 1. The processing table 1 serves as the support base for the entire machine, with its top supporting the chassis panels to be bent, and its interior for installing drive components. Protective mesh panels 2 are provided on both sides of the top of the processing table 1, protecting the bending processing area from contact with moving parts such as the bending pressure plate 14 and the lateral movable seat 4. A bottom hinge seat 9 is provided at the lower end of one side of the protective mesh panel 2, and a flip support mesh panel 8 is provided on one side of the bottom hinge seat 9. The flip support mesh panel 8 can be flipped around the bottom hinge seat 9. When it is necessary to insert larger chassis panels, clean debris from the top of the processing table 1, or repair internal components, the flip support mesh panel 8 can be flipped outwards.

[0024] Electrically controlled telescopic rods 12 are installed on both sides inside the processing table 1. Guide slots 10 are opened on both sides of the top of the processing table 1. The guide slots 10 are arranged at an angle, and the inclined traction rod 3 passes through the inner side of the guide slot 10 at an angle. One end of the electrically controlled telescopic rod 12 is connected to the inclined traction rod 3, and one end of the inclined traction rod 3 is connected to the lateral movable seat 4. A bending pressure plate 14 is provided on one side of the lateral movable seat 4. When the electrically controlled telescopic rod 12 extends, it pushes the inclined traction rod 3 to move along the guide slot 10. Since the guide slot 10 has an inclined guiding effect on the inclined traction rod 3, the inclined traction rod 3 can drive the lateral movable seat 4 to produce an inclined displacement. The lateral movable seat 4 further drives the bending pressure plate 14 to move closer to the bending edge of the chassis plate. When the electrically controlled telescopic rod 12 retracts, the inclined traction rod 3 moves in the opposite direction along the guide slot 10, and the lateral movable seat 4 and the bending pressure plate 14 are reset.

[0025] A lifting drive unit 6 is installed directly above the top of the processing table 1. The lifting drive unit 6 can be a pneumatic cylinder, an electric cylinder, or a hydraulic cylinder. A lifting pressure rod 15 is installed at the bottom of the lifting drive unit 6, and a guide frame 7 is installed on the outside of the lifting drive unit 6. A lifting mounting frame 5 is installed outside the guide frame 7. The lifting mounting frame 5 is used to fix the lifting drive unit 6 and the guide frame 7, and the guide frame 7 is used to limit the vertical movement direction of the lifting pressure rod 15 to prevent the lifting pressure rod 15 from swaying during the downward pressing process. The bottom of the lifting pressure rod 15 is connected to the bending pressure plate 14. After the lifting drive unit 6 is started, it drives the lifting pressure rod 15 to move downward. The lifting pressure rod 15 drives the bending pressure plate 14 to press down on the chassis panel, thereby completing the clamping of the chassis panel before bending and the main downward pressure output during the bending process.

[0026] The bending pressure plate 14 has steering heads 16 at both ends. Lateral support telescopic members 17 are located inside the steering heads 16, and support feet 11 are located at the bottom of the lateral support telescopic members 17. The steering heads 16 enable the lateral support telescopic members 17 to adapt their angle to the changing posture of the bending pressure plate 14. The lateral support telescopic members 17 provide elastic support to the front and rear ends of the bending pressure plate 14. The support feet 11 are used to contact the processing table 1 or the ground support surface. Through the cooperation of the steering heads 16, the lateral support telescopic members 17, and the support feet 11, the problem of inconsistent force on the front and rear ends of the bending pressure plate 14 during long-side bending can be reduced, preventing inconsistent bending angles caused by one end of the bending pressure plate 14 being pressed first and the other end later.

[0027] Example 1: As Figure 4 and Figure 5 As shown, a forming side baffle 13 is provided on one side of the bending pressure plate 14. The forming side baffle 13 is used to provide a lateral forming reference when bending the chassis panel, so that the bending edge of the chassis panel can be formed against the baffle. Follower flipping blocks 23 are provided at the upper and lower ends of the front side of one side of the forming side baffle 13. In the initial state, the follower flipping blocks 23 only contact the surface of the forming side baffle 13, rather than being fixed to the forming side baffle 13. Therefore, the follower flipping blocks 23 can flip relative to the forming side baffle 13 after being subjected to force.

[0028] A first rotating shaft 22 is provided through the inner side of the follower-rotating block 23, forming a rotating structure with the first rotating shaft 22. Specifically, a shaft hole is provided on the follower-rotating block 23, and the first rotating shaft 22 passes through the shaft hole, allowing the follower-rotating block 23 to rotate around the first rotating shaft 22. A buffer pressure rod 25 is also vertically provided through the inner side of the follower-rotating block 23, and the buffer pressure rod 25 can move up and down within the vertical hole of the follower-rotating block 23. A transition pressure cap 24 is provided at the top of the buffer pressure rod 25, and the diameter of the transition pressure cap 24 is larger than the diameter of the vertical hole, which is used to prevent the buffer pressure rod 25 from coming out of the follower-rotating block 23, and also to increase the upper force-bearing area. An adapter spring is sleeved on the outside of the buffer pressure rod 25, with one end abutting against the follower-rotating block 23 and the other end abutting against the buffer pressure rod 25 or the floating pressure plate 28, which is used to provide a restoring elastic force after the buffer pressure rod 25 is pressed and moved. A floating pressure plate 28 is provided at the bottom of the buffer pressure bar 25. The floating pressure plate 28 is used to directly contact the surface of the bent chassis panel.

[0029] A trigger swing arm 21 is fitted onto the front side of the first rotating shaft 22. A second rotating shaft is threaded through the bottom of the trigger swing arm 21, and an adapter frame is fitted onto the outside of the second rotating shaft. The adapter frame can be composed of two parallel ear plates and a connecting base plate. Rotating shaft holes are respectively opened on the two parallel ear plates, and the second rotating shaft passes through the rotating shaft holes. The bottom of the trigger swing arm 21 is fitted onto the outside of the second rotating shaft. The adapter frame is fixedly connected to the surface of the molding side baffle 13. Therefore, when the molding side baffle 13 moves, it can drive the adapter frame to move synchronously. The adapter frame then drives the trigger swing arm 21 to swing through the second rotating shaft.

[0030] During operation, the electrically controlled telescopic rod 12 activates, causing the lateral movable seat 4 to move. The lateral movable seat 4 then moves and rotates the bending pressure plate 14, and the forming side baffle 13 follows the bending pressure plate 14. As the forming side baffle 13 moves, it moves the adapter frame, which in turn rotates the trigger swing arm 21 via the second rotating shaft. The rotation of the trigger swing arm 21 then rotates the follower flipping block 23 outside the first rotating shaft 22, causing the follower flipping block 23 to gradually move away from the surface of the forming side baffle 13. As the follower flipping block 23 flips, the buffer pressure rod 25 and the floating pressure plate 28 change position, causing the floating pressure plate 28 to gradually approach and contact the surface of the chassis panel at the bottom of the bending pressure plate 14.

[0031] When the floating pressure plate 28 contacts the surface of the chassis panel, if there is a slight warping or height deviation on the surface of the chassis panel, the floating pressure plate 28 will drive the buffer pressure rod 25 to move upward within the vertical hole of the follower flip block 23, at which point the adapter spring is compressed. The elastic force generated by the adapter spring causes the floating pressure plate 28 to continuously press against the surface of the chassis panel, but without creating a rigid impact. This allows for follower pressing of the chassis panel surface while the bending pressure plate 14 is bending, limiting panel warping, shaking, and rebound. After bending is completed, the electrically controlled telescopic rod 12 retracts, triggering the swing arm 21 to rotate in the opposite direction, and the follower flip block 23 returns to a position close to the forming side baffle 13. The adapter spring then pushes the buffer pressure rod 25 and the floating pressure plate 28 to reset.

[0032] Example 2: Figure 6 and Figure 7 As shown, guide posts 27 are evenly spaced at the top of the floating pressing plate 28. Limit caps 26 are provided at the top of each guide post 27, and a first return spring 18 is sleeved around the limit caps 26. A guide hole corresponding to the guide post 27 is provided on the bending pressing plate 14. The bending pressing plate 14 is sleeved around the guide post 27 through the guide hole, allowing it to move up and down relative to the floating pressing plate 28 along the guide post 27. The limit caps 26 restrict the bending pressing plate 14 from detaching upwards from the guide post 27 and prevent excessive movement of the bending pressing plate 14 outside the guide post 27. The first return spring 18 pushes the bending pressing plate 14 back to its original position after the downward pressure is lost.

[0033] A horizontal shaft 36 is provided on one side of the top of the floating pressure plate 28. Bearing sleeves 37 are fitted at both ends of the horizontal shaft 36 and are fixed to the floating pressure plate 28. Rotating sleeves 34 are equidistantly fitted around the bearing sleeves 37 and can rotate around the horizontal shaft 36. A connecting arm 35 is provided at one end of the rotating sleeve 34, and a half-width support plate 29 is provided on one side of the connecting arm 35. The length of the half-width support plate 29 is equal to half the length of the bending pressure plate 14, so that the half-width support plate 29 can support a section of the chassis panel, rather than rigidly supporting the entire bent edge at the same time. The purpose of this design is to reduce the overall rigid interference when bending large-area panels, so that the force on the panel can be transferred in segments and reduce local deformation of the panel surface.

[0034] A vertical sliding hole 30 is provided on the inner side of the half-width support plate 29. A floating pressure needle 33 is vertically inserted through the inner side of the vertical sliding hole 30 at equal intervals. The floating pressure needle 33 can move up and down within the vertical sliding hole 30. A limit ring 32 is provided at the upper end of the floating pressure needle 33. The outer diameter of the limit ring 32 is larger than the local diameter of the vertical sliding hole 30 to prevent the floating pressure needle 33 from moving excessively downward. A second return spring 31 is provided at the bottom of the floating pressure needle 33. One end of the second return spring 31 abuts against the wall of the half-width support plate 29 or the vertical sliding hole 30, and the other end abuts against the floating pressure needle 33, to push the floating pressure needle 33 back to its original position after it has been pressed down.

[0035] During operation, the chassis panel to be bent is placed at the bottom of the half-width support plate 29, ensuring that the edge of the panel to be bent is below the bending pressure plate 14. When the lifting drive 6 moves the bending pressure plate 14 downward, the bending pressure plate 14 first contacts and presses against the floating pressure pins 33. After being stressed, the floating pressure pins 33 move downward along the vertical sliding holes 30. As the floating pressure pins 33 move downward, they first contact the top of the chassis panel, creating pre-pressure at multiple points on the chassis panel. Because the multiple floating pressure pins 33 are evenly spaced, the panel is not pressed down by a single pressure point, but is evenly and steadily pressed down by multiple points before bending, which can reduce the warping and lateral movement of the panel before bending.

[0036] When the floating pressure needle 33 continues to move downward until the limiting ring 32 abuts against the inner wall of the vertical sliding hole 30, the floating pressure needle 33 stops moving relative to the half-width support plate 29. At this time, the continued downward pressure of the bending pressure plate 14 is transmitted to the half-width support plate 29. After being subjected to force, the half-width support plate 29 drives the rotating sleeve 34 to rotate around the horizontal axis 36 through the connecting arm 35. When the half-width support plate 29 flips, it supports the bottom of the chassis panel, so that the bottom of the panel has follow-up support while being pressed down by the bending pressure plate 14. This process forms an action sequence of "floating pressure needle 33 first pre-presses at multiple points, and then the half-width support plate 29 flips to support", which can avoid the panel being bent directly before it is firmly pressed, thereby reducing bulging, collapse and inconsistent angles near the bending line.

[0037] After bending is completed, the lifting drive 6 moves the bending pressure plate 14 upward, the first return spring 18 pushes the bending pressure plate 14 to return to its original position along the guide post 27, the second return spring 31 pushes the floating pressure pin 33 to return to its original position, and the half-width support plate 29 returns to its initial support position under its own weight or the reverse action of the connecting arm 35. After the next chassis panel is placed, the above actions can be repeated.

[0038] Example 3: Figure 5 As shown, a pressing lever 20 is provided at the lower end of the triggering arm 21, and a progressive pressing block 19 is provided at one end of the pressing lever 20. The pressing lever 20 is fixedly connected to the triggering arm 21, or connected by screws or pins, so that the pressing lever 20 can rotate synchronously when the triggering arm 21 rotates. The progressive pressing block 19 can be a rubber block, a nylon block, or a metal block with a buffer layer on its surface, used to abut against the side surface of the chassis panel. The purpose of using a buffer contact material is to reduce scratches on the outer surface of the chassis panel while maintaining sufficient lateral pressing force.

[0039] During operation, the electrically controlled telescopic rod 12 moves the lateral movable seat 4 and the bending pressure plate 14. The forming side baffle 13 moves with the bending pressure plate 14 and moves the adapter frame, which in turn causes the trigger swing arm 21 to rotate. When the trigger swing arm 21 rotates, the pressure swing rod 20 located at the lower end of the trigger swing arm 21 rotates synchronously. The pressure swing rod 20 causes the progressive pressure block 19 to gradually approach the side surface of the chassis panel. Since the progressive pressure block 19 gradually approaches the panel as the trigger swing arm 21 rotates, rather than directly pressing against the panel at the beginning of bending, its lateral pressure is gradually built up.

[0040] When the chassis panel is subjected to the downward pressure of the bending pressure plate 14 and the lateral forming force of the forming side baffle 13, the side edge of the panel is prone to slipping outward or bulging. At this time, the progressive pressure block 19 gradually presses against the side surface of the panel, forming a reverse lateral restriction on the panel, so that the bent edge of the panel can be stably attached to the forming side baffle 13, preventing the panel from shifting outward during the bending process. The progressive pressure block 19, together with the floating pressure plate 28 and the half-width support plate 29, makes the chassis panel simultaneously subjected to upper pressure, lower support and lateral pressure during the bending process, restricting the deformation of the panel from three directions.

[0041] The overall working process is as follows: First, place the panel to be bent on top of the processing table 1, so that the edge of the panel to be bent is below the bending pressure plate 14, and the bottom of the panel is in the support area of ​​the half-width support plate 29. After starting the equipment, the lifting drive 6 drives the lifting pressure rod 15 to move down, and the lifting pressure rod 15 drives the bending pressure plate 14 to move downward closer to the panel; at the same time, the electrically controlled telescopic rod 12 drives the inclined traction rod 3 to move along the guide groove 10, and the inclined traction rod 3 drives the lateral movable seat 4 and the bending pressure plate 14 to move laterally, so that the bending pressure plate 14 applies a bending action to the bending edge of the panel.

[0042] In the initial stage of the bending pressure plate 14 moving downwards, the floating pressure needle 33 first contacts the top of the plate and pre-presses the plate at multiple points to prevent the plate from moving before bending. After the bending pressure plate 14 continues to move downwards, the limiting ring 32 abuts against the wall of the vertical sliding hole 30. After the half-width support plate 29 is subjected to force, it drives the rotating sleeve 34 to rotate around the horizontal axis 36 through the connecting arm 35, thereby flipping and supporting the bottom of the plate. At the same time, the forming side baffle 13 drives the adapter frame to move, the adapter frame drives the trigger swing arm 21 to rotate, the trigger swing arm 21 drives the follower flipping block 23 to rotate, so that the floating pressing plate 28 presses against the surface of the plate; the trigger swing arm 21 also drives the pressing swing rod 20 to rotate, so that the progressive pressing block 19 gradually abuts against the side surface of the plate.

[0043] After bending is completed, the lifting drive 6 moves the bending pressure plate 14 upward, the electrically controlled telescopic rod 12 retracts, and the lateral movable seat 4, bending pressure plate 14, and forming side baffle 13 reset. The first reset spring 18 pushes the bending pressure plate 14 to reset relative to the guide post 27, the second reset spring 31 pushes the floating pressure pin 33 to reset, and the adapter spring pushes the buffer pressure rod 25 and the floating pressing plate 28 to reset. After the trigger swing arm 21 swings back in the opposite direction, the pressing swing rod 20 and the progressive pressing block 19 disengage from the side surface of the plate, and the follow-up flipping block 23 approaches the surface of the forming side baffle 13 again. At this time, the bent chassis plate can be taken out and the next plate to be bent can be placed in.

[0044] Through the above structure, this invention does not merely utilize the bending pressure plate 14 to perform unidirectional bending of the chassis panel, but simultaneously forms three sets of linkages during the bending pressure plate 14's operation: First, the follow-up flipping block 23, the buffer pressure rod 25, and the floating pressure plate 28 form a follow-up buffer pressure, solving the problems of upper surface warping and springback during panel bending; Second, the floating pressure pin 33, the half-width support plate 29, the connecting arm 35, and the horizontal axis 36 form a bottom support with pre-pressing followed by support, solving the problems of uneven force and local collapse near the bending line of the panel; Third, the trigger swing arm 21, the pressing swing rod 20, and the progressive pressing block 19 form progressive lateral pressing, solving the problems of lateral slippage and edge bulging of the panel. Therefore, this invention can improve the positioning stability, bending angle consistency, and panel surface forming quality during the chassis panel bending process.

[0045] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A bending device for chassis manufacturing, comprising a processing table (1), characterized in that: Protective mesh plates (2) are provided on both sides of the top of the processing table (1). Electrically controlled telescopic rods (12) are provided on both sides inside the processing table (1). Guide slots (10) are provided on both sides of the top of the processing table (1). An inclined traction rod (3) is inclinedly inserted through the guide slot (10). A lateral movable seat (4) is provided at one end of the inclined traction rod (3). A bending pressure plate (14) is provided on one side of the lateral movable seat (4). A lifting drive unit (6) is provided directly above the top of the processing table (1). A lifting pressure rod (15) is provided at the bottom of the lifting drive unit (6). A guide frame (7) is provided on the outside of the lifting drive unit (6). A lifting mounting frame (5) is provided on the outside of the guide frame (7). The bottom of the lifting pressure rod (15) is connected to the bending pressure plate (14). A forming side baffle (13) is provided on one side of the bending pressure plate (14), and a follow-up buffer pressing assembly is provided on the forming side baffle (13). The follow-up buffer pressing assembly is used to follow up and press the surface of the bent chassis panel when the bending pressure plate (14) moves the forming side baffle (13). A segmented pre-compression flip support assembly is provided between the bending pressure plate (14) and the follow-up buffer pressing assembly. The segmented pre-compression flip support assembly is used to first perform local pre-compression on the chassis panel during the bending pressure plate (14) pressing process, and then flip support the bottom of the chassis panel. The follow-up buffer pressing assembly is also provided with a progressive lateral pressing assembly, which is used to gradually press against the side surface of the bent chassis panel as the follow-up buffer pressing assembly rotates.

2. The bending device for chassis manufacturing and processing according to claim 1, characterized in that: The bottom of the protective mesh plate (2) on both sides of the top of the processing table (1) is provided with a bottom hinge seat (9). A flip support mesh plate (8) is provided on one side of the bottom hinge seat (9). A turning head (16) is provided at both ends of the bending pressure plate (14). A lateral support telescopic member (17) is provided on the inner side of the turning head (16). A support foot (11) is provided at the bottom of the lateral support telescopic member (17).

3. The bending device for chassis manufacturing and processing according to claim 1, characterized in that: The lifting drive component (6) is any one of a pneumatic cylinder, an electric cylinder, or a hydraulic cylinder. The guide frame (7) surrounds the outside of the lifting drive component (6). The lifting pressure rod (15) vertically penetrates the lifting mounting frame (5) and is connected to the bending pressure plate (14), so that the bending pressure plate (14) can vertically press and fold the chassis panel under the drive of the lifting drive component (6).

4. The bending device for chassis manufacturing and processing according to claim 1, characterized in that: The follow-up buffer pressing assembly includes follow-up flip blocks (23) disposed at the upper and lower ends of the front side of the molding side baffle (13). The follow-up flip blocks (23) only contact the surface of the molding side baffle (13). A first rotating shaft (22) is provided through the inner side of the follow-up flip blocks (23). The first rotating shaft (22) and the follow-up flip blocks (23) form a rotating structure. A buffer pressure rod (25) is also vertically provided through the inner side of the follow-up flip blocks (23). A transition pressure cap (24) is provided at the top of the buffer pressure rod (25). An adapter spring is sleeved on the outside of the buffer pressure rod (25). A floating pressing plate (28) is provided at the bottom of the buffer pressure rod (25).

5. The bending device for chassis manufacturing and processing according to claim 4, characterized in that: A trigger swing arm (21) is sleeved on the front side of the first rotating shaft (22). A second rotating shaft is provided through the bottom of the trigger swing arm (21). An adapter frame is provided on the outside of the second rotating shaft. The adapter frame is fixedly connected to the surface of the forming side baffle (13). When the electric telescopic rod (12) drives the lateral movable seat (4) to move, the lateral movable seat (4) drives the bending pressure plate (14) to move and rotate. The forming side baffle (13) moves with the bending pressure plate (14) and drives the adapter frame to move. The adapter frame drives the trigger swing arm (21) to rotate through the second rotating shaft. The trigger swing arm (21) drives the follower flipping block (23) to leave the surface of the forming side baffle (13) and causes the buffer pressure rod (25) to drive the floating pressing plate (28) to contact the surface of the bent chassis panel.

6. The bending device for chassis manufacturing and processing according to claim 4, characterized in that: The floating pressing plate (28) is provided with guide posts (27) at equal intervals on the top. The guide posts (27) are provided with limit caps (26) on the top. The limit caps (26) are fitted with a first reset spring (18). The bending pressing plate (14) is fitted on the outside of the guide posts (27). The first reset spring (18) is used to drive the bending pressing plate (14) to reset relative to the floating pressing plate (28) after the bending pressing plate (14) loses its downward pressure. The limit caps (26) are used to limit the excessive movement of the bending pressing plate (14) outside the guide posts (27).

7. A bending device for chassis manufacturing and processing according to claim 6, characterized in that: A horizontal shaft (36) is provided on one side of the top of the floating pressing plate (28). Bearing sleeves (37) are sleeved at both ends of the horizontal shaft (36). Rotating sleeves (34) are equidistantly sleeved on the outside of the bearing sleeves (37). A connecting arm (35) is provided at one end of the rotating sleeve (34). A half-width support plate (29) is provided on one side of the connecting arm (35). The length of the half-width support plate (29) is equal to half the length of the bending pressing plate (14). A vertical sliding hole (30) is opened on the inner side of the half-width support plate (29). A floating pressure needle (33) is vertically inserted through the inner side of the vertical sliding hole (30) at equidistant distances to one side. A limit ring (32) is provided at the upper end of the floating pressure needle (33). A second return spring (31) is provided at the bottom of the floating pressure needle (33).

8. A bending device for chassis manufacturing and processing according to claim 7, characterized in that: The bent chassis panel is placed at the bottom of the half-width support plate (29). When the bending pressure plate (14) moves down, the bending pressure plate (14) first squeezes the floating pressure needle (33). After the floating pressure needle (33) is stressed, it moves down in the vertical sliding hole (30) and squeezes the top of the chassis panel. The limiting ring (32) is used to prevent the floating pressure needle (33) from moving down too much. The second return spring (31) is used to reset after the floating pressure needle (33) loses its downward pressure. When the limiting ring (32) abuts against the inner wall of the vertical sliding hole (30), the half-width support plate (29) is stressed and drives the rotating sleeve (34) to rotate around the horizontal axis (36) through the connecting arm (35), so that the half-width support plate (29) flips and supports the bottom of the chassis panel.

9. A bending device for chassis manufacturing and processing according to claim 5, characterized in that: The progressive lateral pressure assembly includes a pressure swing rod (20) disposed at the lower end of the trigger swing arm (21). One end of the pressure swing rod (20) is provided with a progressive pressure block (19). When the trigger swing arm (21) rotates, the trigger swing arm (21) drives the pressure swing rod (20) to rotate, and the pressure swing rod (20) drives the progressive pressure block (19) to gradually press against the side surface of the bent chassis panel.

10. A bending device for chassis manufacturing and processing according to claim 9, characterized in that: The following buffer pressing component, the segmented pre-pressing flipping support component and the progressive lateral pressure component are respectively arranged in pairs at the front and rear ends of the bending pressure plate (14), so that the chassis panel is subjected to synchronous following pressing force, bottom support force and lateral pressure during the bending process, thereby limiting the lifting, sliding and springback of the chassis panel during the bending process.

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