A device for detecting and eliminating internal stress of a steel plate after bending
Patent Information
- Application Number
- CN202522172839.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-14
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-10-14
AI Technical Summary
[0002]钢板弯曲成型后会因金属内部晶格畸变、塑性变形不均匀产生内应力，若不及时消除，易导致后续加工变形、尺寸精度下降甚至结构开裂
通过检测消除转换架的旋转切换机制，实现检测模块与应力消除模块的一体化集成，检测模块对钢板弯曲件完成内应力分布检测后，无需将钢板从工位移出，仅需驱动检测消除转换架旋转，使应力消除模块对接钢板原检测工位，直接启动应力消除作业，一方面避免转运过程中钢板因碰撞导致的二次应力产生，另一方面将单块钢板“检测－消除”全流程时间大大缩短，同时省去转运工装与人工搬运成本。
Smart Images
Figure CN224901420U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of internal stress detection and elimination equipment, and in particular to a device for detecting and eliminating internal stress after steel plate bending and forming. Background Technology
[0002] After steel plates are bent and formed, internal stress will be generated due to the distortion of the internal crystal lattice and uneven plastic deformation. If it is not eliminated in time, it will easily lead to deformation in subsequent processing, decrease in dimensional accuracy, or even structural cracking.
[0003] Existing equipment generally adopts a separate structure where the detection equipment and the stress elimination equipment are set up independently. The steel plates need to be transferred between the two types of equipment by manual labor or transfer tools. During the transfer process, the steel plates are easily affected by collisions and uneven lifting forces, which can easily generate secondary internal stress. This results in the need to deal with the new stress in the subsequent stress elimination operation. The loading, unloading and positioning of the transfer tools also require extra time, resulting in low production efficiency. Summary of the Invention
[0004] This utility model provides a device for detecting and eliminating internal stress after steel plate bending. After the detection module completes the detection of internal stress distribution of the bent steel plate, there is no need to move the steel plate out of the work area. It is only necessary to drive the detection and elimination conversion frame to rotate so that the stress elimination module connects to the original detection work station of the steel plate and directly start the stress elimination operation. On the one hand, it avoids the generation of secondary stress caused by collision of the steel plate during the transportation process. On the other hand, it greatly shortens the time of the whole process of "detection-elimination" of a single steel plate, while saving the cost of transportation tooling and manual handling.
[0005] This utility model provides a device for detecting and eliminating internal stress after steel plate bending and forming, specifically including: a main base, a detection and elimination conversion frame and a feeding tray. The feeding tray is rotatably connected to one side of the top of the main base by a motor, and the detection and elimination conversion frame is provided on the other side of the top of the main base. A side sliding slide is horizontally connected to the main base via a slide rail. A side telescopic cylinder is fixedly connected to the top of the side sliding slide. The telescopic rod of the side telescopic cylinder is fixedly connected to the main base. The side sliding slide is driven to move horizontally along the slide rail by the telescopic movement of the side telescopic cylinder.
[0006] Furthermore, both sides of the top of the detection and stress relief conversion frame are fixedly connected to upper lifting slide rods. These upper lifting slide rods are vertically slidably connected to an upper lifting frame via an electric slide rail or an electric ball screw drive. The upper lifting frames on both sides of the detection and stress relief conversion frame are respectively fixedly connected to the detection module and the stress relief module. The detection module and the stress relief module can be independently adjusted in height via the upper lifting frames, with an adjustment range of 0-500mm. Combined with the rotation of the detection and stress relief conversion frame and the horizontal movement of the side sliding block, this enables comprehensive detection and stress relief of bent steel plates of different specifications. The detection module uses a magnetic elastic detection unit to detect the internal stress of the steel plate. The spring detection unit includes a Hall sensor array, an electromagnetic shielding shell, and a data acquisition unit. The detection depth is ≤1mm, and the detection accuracy is ±5MPa. The electromagnetic shielding shell can reduce external electromagnetic interference. The stress relief module uses a multi-frequency adjustable vibrator with a vibration force range of 50~3000N and a frequency adjustment range of 20~200Hz. The vibrator end is equipped with a replaceable arc-shaped contact head to adapt to steel plates with different bending radii. The vibrator is also equipped with a force feedback sensor to monitor the contact pressure with the steel plate in real time. The stress relief module performs stress relief work. The upper lifting frame adjusts the height of the detection module and the stress relief module by moving up and down along the upper lifting slide bar.
[0007] Furthermore, the center of the detection and stress relief conversion frame is rotatably connected by a slewing bearing and a side sliding block driven by a motor. The side sliding block is equipped with a servo motor and an angle encoder, which can drive the detection and stress relief conversion frame to rotate from 0 to 180° with a positioning accuracy of ±0.5°, thereby realizing the position conversion between the detection module and the stress relief module. The detection and stress relief conversion frame and the loading tray are arranged adjacent to each other.
[0008] Furthermore, the top of the feeding tray is provided with a steel plate support in a circular array. The front side of the steel plate support is provided with a front support groove, and a rubber buffer layer is provided in the front support groove. The groove is 20-50mm deep and can be adapted to curved steel plates with a thickness of 5-30mm. The back of the steel plate support is threaded with a rear limit screw.
[0009] Furthermore, the rear limiting screw and the feeding tray are in tight contact, and the lower end of the steel plate bracket is circumferentially connected to the feeding tray. The angle of the steel plate bracket is fixed by the rear limiting screw.
[0010] Furthermore, when the side telescopic cylinder extends, the side moving slide moves the detection elimination conversion frame synchronously away from the loading tray; when the side telescopic cylinder retracts, the drive side moving slide moves the detection elimination conversion frame closer to the loading tray.
[0011] Furthermore, the connection detection module and stress relief module of the lifting frame on both sides of the detection elimination conversion frame are located on the side away from the detection elimination conversion frame. Through the rotation switching mechanism of the detection elimination conversion frame, the detection module and stress relief module are integrated into one unit, and only the detection elimination conversion frame needs to be driven to complete a 0-180° rotation.
[0012] This utility model provides a device for detecting and eliminating internal stress after steel plate bending and forming, which has the following beneficial effects: By using the rotation switching mechanism of the stress elimination conversion frame, the detection module and the stress elimination module are integrated. After the detection module completes the internal stress distribution detection of the steel plate bending part, there is no need to move the steel plate out of the work area. It is only necessary to drive the detection elimination conversion frame to rotate so that the stress elimination module can connect with the original detection work station of the steel plate and directly start the stress elimination operation. On the one hand, this avoids the generation of secondary stress caused by collision of the steel plate during the transportation process. On the other hand, it greatly shortens the whole process time of "detection-elimination" of a single steel plate, while saving the cost of transportation tooling and manual handling.
[0013] When the detection and stress relief conversion frame is performing detection or stress relief operations on the steel plate at the current workstation, the operator can simultaneously perform loading and unloading operations on steel plates at other workstations. This completely eliminates the problem of the detection / stress relief module being idle during loading and unloading on traditional equipment, increasing the effective utilization rate of the detection module and stress relief module from 60% to 70% in traditional split-type equipment to over 90%.
[0014] This device, with its "rotational switching + multi-station parallel" design, requires only one operator to complete the entire process of "loading → starting the equipment → unloading". The equipment automatically completes the detection, elimination switching and parameter matching, reducing labor costs and reliance on the professional skills of operators, and shortening the on-the-job training cycle. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.
[0016] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.
[0017] In the attached diagram: Figure 1 A schematic diagram of the overall structure of this application is shown; Figure 2 A schematic diagram of the main base structure of this application is shown; Figure 3 A schematic diagram of the feeding tray structure of this application is shown; Figure 4 A schematic diagram of the detection elimination conversion frame structure of this application is shown; Figure 5 A schematic diagram of the side-moving slide block of this application is shown; Figure 6 This diagram shows the structure of the main base, the detection and elimination conversion frame, and the feeding tray in the separated state of this application; Figure label: 1. Main base; 101. Side sliding slide; 102. Side telescopic cylinder; 2. Detection and stress relief conversion frame; 201. Upper lifting slide bar; 202. Upper lifting frame; 203. Detection module; 204. Stress relief module; 3. Feeding tray; 301. Steel plate bracket; 302. Rear limit screw; 303. Front support groove. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0019] Example 1: Please refer to Figures 1 to 6 : This utility model proposes a device for detecting and eliminating internal stress after steel plate bending and forming, including a main base 1, a detection and elimination conversion frame 2, and a feeding tray 3. A side-moving slide 101 is horizontally slidably connected to the main base 1 via a slide rail. A side telescopic cylinder 102 is fixedly connected to the top of the side-moving slide 101. The telescopic rod of the side telescopic cylinder 102 is fixedly connected to the main base 1. The telescopic movement of the side-moving slide 101 is driven by the telescopic movement of the side telescopic cylinder 102, which drives the side-moving slide 101 to move horizontally along the slide rail. When the side telescopic cylinder 102 extends, the side-moving slide 101 drives the detection and elimination conversion frame 2 to move synchronously away from the feeding tray 3. When the side telescopic cylinder 102 retracts, it drives the side-moving slide 101 to move horizontally away from the feeding tray 3. The slide 101 drives the detection elimination conversion frame 2 to move along the direction close to the feeding tray 3. The moving stroke is 0-500mm, realizing the distance adjustment between the detection elimination conversion frame 2 and the steel plate, realizing the detection compatibility of the bending position of the steel plate. The top side of the main base 1 is connected to the feeding tray 3 by a motor. The top of the feeding tray 3 is arranged in a ring array of steel plate supports 301. The front side of the steel plate support 301 is provided with a front support groove 303. The front support groove 303 is provided with a rubber buffer layer. The groove depth is 20-50mm, which can be adapted to the bending steel plate with a thickness of 5-30mm. The back of the steel plate support 301 is threaded with a rear limit screw 302. On the other side of the top of the main base 1, a detection and stress relief conversion frame 2 is provided. Both sides of the top of the detection and stress relief conversion frame 2 are fixedly connected to upper lifting slide rods 201. The upper lifting slide rods 201 are vertically slidably connected to the upper lifting frame 202 via an electric slide rail or an electric ball screw drive. The upper lifting frames 202 on both sides of the detection and stress relief conversion frame 201 are respectively fixedly connected to the detection module 203 and the stress relief module 204. The detection module 203 and the stress relief module 204 can be independently adjusted in height via the upper lifting frame 202, with an adjustment range of 0-500mm. Combined with the rotation of the detection and stress relief conversion frame 2 and the horizontal movement of the side-moving slide block 101, it enables comprehensive detection and stress relief of bent steel plates of different specifications. The detection module 203 uses a magnetic elastic detection unit to detect the internal stress of the steel plate. The magnetic elastic detection unit includes a Hall sensor array, an electromagnetic shielding shell, and a data acquisition unit. The detection depth is ≤1mm, and the detection accuracy is ±5MPa. The electromagnetic shielding shell can reduce external electrical... The magnetic interference and stress relief module 204 uses a multi-frequency adjustable vibrator with a vibration force range of 50-3000N and a frequency adjustment range of 20-200Hz. The vibrator end is equipped with a replaceable arc-shaped contact head to adapt to steel plates with different bending radii. The vibrator is also equipped with a force feedback sensor to monitor the contact pressure with the steel plate in real time. The stress relief module 204 performs stress relief work. The upper lifting frame 202 adjusts the height of the detection module 203 and the stress relief module 204 along the upper lifting slide 201 to realize the adjustment of the steel plate detection and stress relief position. The center of the detection and stress relief conversion frame 2 is connected to the side moving slide 101 by a motor through a rotary bearing. The side moving slide 101 is equipped with a servo motor and an angle encoder, which can drive the detection and stress relief conversion frame 2 to rotate from 0-180° with a positioning accuracy of ±0.5°, realizing the position conversion of the detection module 203 and the stress relief module 204. The detection and stress relief conversion frame 2 and the loading tray 3 are arranged adjacent to each other.
[0020] In this embodiment, the rear limit screw 302 and the feeding tray 3 are in tight contact, and the lower end of the steel plate bracket 301 is circumferentially connected to the feeding tray 3. The angle of the steel plate bracket 301 is fixed by the rear limit screw 302, which can adapt to steel plate bending parts of different specifications. There is no need to change special tooling for steel plates of different specifications, and the tooling change time is shortened.
[0021] In this embodiment, the detection module 203 and stress relief module 204 connected to the lifting frames 202 on both sides of the detection and stress relief conversion frame 2 are located on the side away from the detection and stress relief conversion frame 2. Through the rotation switching mechanism of the detection and stress relief conversion frame 2, the detection module 203 and stress relief module 204 are integrated. Only by driving the detection and stress relief conversion frame 2 to complete a 0-180° rotation (positioning accuracy ±0.5°, switching time ≤30s) can the stress relief module 204 (multi-frequency adjustable vibrator) accurately connect to the original detection station of the steel plate and directly start the stress relief operation. This eliminates the traditional separate process of "detection equipment → transfer → stress relief equipment" and further shortens the processing time.
[0022] In this second embodiment, based on the first embodiment, the rear limiting screw 302 and the steel plate bracket 301 are vertically connected. The rear limiting screw 302 slides into the pre-set insertion hole of the feeding tray 3. The angle positioning of the steel plate bracket 301 is achieved by sliding the rear limiting screw 302 into the insertion hole at different positions of the feeding tray 3, making the positioning more secure.
[0023] The working principle of this embodiment is as follows: Each bent steel plate is supported and fixed by at least two symmetrically arranged steel plate supports 301 to ensure the stability of the steel plate support. The angle of the steel plate supports 301 is adjustable and fixed by tightening the feeding plate 3 with the rear limit screws 302. With the rubber buffer layer in the front support groove 303 (to avoid scratching the surface of the steel plate), it can stably support steel plate bending parts of different specifications with thicknesses of 5-30mm and bending radii of 5-500mm. It is suitable for multiple specifications of steel plates and does not require changing special tooling for different specifications of steel plates. The tooling change time is shortened, which further improves the continuous operation capability of the equipment. It is especially suitable for the flexible production needs of small and medium batches and multiple varieties of steel plate bending parts. The 3-6 steel plate supports 301 in the ring array at the top of the feeding plate 3 can support multiple steel plates to be processed at the same time, such as 4 plates: 1 plate is in the detection / elimination station, 2 plates are in the processing station, and 1 plate is in the unloading station. The material handling and stress elimination processes proceed in parallel. The loading tray 3 transports the steel plate to the work station adjacent to the stress elimination conversion frame 2 via circumferential rotation. The upper lifting frame 202 adjusts the height of the detection module 203 and the stress elimination module 204 along the upper lifting slide 201, thereby adjusting the position of the steel plate for detection and stress elimination. The coordinated movement of the detection elimination conversion frame 2 and the side moving slide 101, along with the height adjustment of the upper lifting frame 202, ensures that the detection module 203 and the stress elimination module 204 are always precisely aligned with the target area of the bent steel plate. Combined with the stable support of the loading tray 3, this avoids the detection omissions (traditional omission rate 5%~8%) or incomplete elimination (traditional residual stress exceedance rate 10%~12%) caused by the steel plate position shift during traditional transfer processes. This increases the pass rate of stress elimination in the steel plate to over 98%, ensuring the dimensional accuracy and stability of subsequent processing. When the detection and stress relief conversion frame 2 is performing detection or stress relief operations on the steel plate at the current workstation, the operator can simultaneously perform loading and unloading operations on steel plates at other workstations. This completely eliminates the problem of the detection module 203 and stress relief module 204 being idle during loading and unloading on traditional equipment, increasing the effective utilization rate of the detection module 203 and stress relief module 204 from 60%–70% in traditional split-type equipment to over 90%. Through the rotation switching mechanism of the detection and stress relief conversion frame 2, the detection module 203 and stress relief module 204 can be used in a unified manner. Integrated design. During the inspection phase, after the inspection module 203 completes the internal stress distribution inspection of the bent steel plate (such as rapid positioning of high-stress areas using magnetoelastic methods), there is no need to move the steel plate out of the work area. Only the inspection and stress relief conversion frame 2 needs to be driven to complete a 0-180° rotation (positioning accuracy ±0.5°, switching time ≤30s) to allow the stress relief module 204 (multi-frequency adjustable vibrator) to precisely connect to the original inspection station of the steel plate, directly initiating stress relief operations. This completely eliminates the traditional separate process of "inspection equipment → transfer → stress relief equipment," allowing for a seamless integration. On the one hand, it avoids the generation of secondary stress in steel plates due to vibration and collision during the transfer process (the increase in secondary stress during traditional transfer can reach 10% to 15%). On the other hand, it shortens the entire process time of "inspection-elimination" for a single steel plate from 40 to 60 minutes in traditional split-type equipment to 15 to 20 minutes, improving processing efficiency by 1.5 to 2 times. At the same time, it saves the cost of transfer tooling and manual handling, and a single production line can save 30% to 40% of transfer-related costs annually. It is especially suitable for batch processing scenarios of medium and thick plates (thickness 10 to 50 mm) and large-size bent parts (length 3 to 6 m). Traditional split-type equipment requires 2 to 3 operators to be responsible for inspection and alignment, steel plate transfer, and elimination parameter adjustment, and they must have professional skills. This device, through the "rotation switching + multi-station parallel" design, only requires 1 operator to complete the entire process of "loading → starting the equipment → unloading". The equipment automatically completes the inspection-elimination switching and parameter matching, reducing labor costs by 60% to 70%, and shortening the on-the-job training cycle from 1 to 2 weeks to 1 to 2 days, greatly reducing skill dependence.
[0024] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only involve structures relevant to the embodiments disclosed herein; other structures may refer to general designs.
[0025] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.
[0026] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.
Claims
1. A device for detecting and eliminating internal stress after bending and forming a steel plate, comprising: The main base (1), the detection elimination conversion frame (2), and the feeding tray (3) are characterized in that the feeding tray (3) is rotatably connected to one side of the top of the main base (1), and the detection elimination conversion frame (2) is provided on the other side of the top of the main base (1). The upper lifting slide rod (201) is fixedly connected to both sides of the top of the detection elimination conversion frame (2), and the upper lifting frame (202) is vertically slidably connected to the upper lifting slide rod (201). The upper lifting frame (202) of the upper lifting slide rod (201) on both sides of the detection elimination conversion frame (2) is fixedly connected to the detection module (203) and the stress elimination module (204).
2. The device for detecting and eliminating internal stress after bending and forming a steel plate according to claim 1, characterized in that, The main base (1) is horizontally slidably connected to a side sliding slide (101), and a side telescopic cylinder (102) is fixedly connected to the top of the side sliding slide (101). The telescopic rod of the side telescopic cylinder (102) is fixedly connected to the main base (1).
3. The device for detecting and eliminating internal stress after bending and forming a steel plate according to claim 2, characterized in that, The detection elimination conversion frame (2) is rotatably connected to the center and the side sliding slide (101), and the detection elimination conversion frame (2) and the feeding tray (3) are arranged adjacent to each other.
4. The device for detecting and eliminating internal stress after bending and forming a steel plate according to claim 1, characterized in that, The top of the feeding tray (3) is provided with a steel plate bracket (301) in a ring array. A front support groove (303) is provided on the front side of the steel plate bracket (301), and a rear limit screw (302) is threaded on the back of the steel plate bracket (301).
5. The device for detecting and eliminating internal stress after bending and forming a steel plate according to claim 4, characterized in that, The rear limiting screw (302) and the feeding tray (3) are in tight contact, and the lower end of the steel plate bracket (301) and the feeding tray (3) are circumferentially connected.
6. The device for detecting and eliminating internal stress after bending and forming a steel plate according to claim 2, characterized in that, When the side telescopic cylinder (102) extends, the side moving slide (101) drives the detection elimination conversion frame (2) to move synchronously away from the feeding tray (3).
7. The device for detecting and eliminating internal stress after bending and forming a steel plate according to claim 1, characterized in that, The connection detection module (203) and stress relief module (204) of the lifting frame (202) on both sides of the detection elimination conversion frame (2) are located on the side away from the detection elimination conversion frame (2).